JP7796870B2 - Terminal - Google Patents

Description

The present disclosure relates to a terminal .

The 3rd Generation Partnership Project (3GPP) is developing specifications for the 5th generation mobile communication system (5G, also known as New Radio (NR) or Next Generation (NG)), and is also developing specifications for the next generation, known as Beyond 5G, 5G Evolution, or 6G.

For 5G, technologies are being considered that meet the requirements of large-capacity systems, high data transmission speeds, low latency, simultaneous connection of a large number of terminals, low cost, and low power consumption (for example, non-patent document 1).

Regarding power saving, 3GPP has introduced an intermittent reception method that allows terminals to receive signals with low power consumption. Note that power may be interpreted as energy, and power saving may be interpreted as power reduction, etc.

3GPP TS 38.300 V17.0.0 (2022-03) “New SI: Study on network energy savings for NR”, RP-213554, 3GPP TSG RAN Meeting #94e, 3GPP, December 2021

There is room for consideration regarding how to properly receive signals using intermittent reception methods.

One aspect of the present disclosure provides a terminal and a base station that can properly receive signals in an intermittent reception method.

A terminal according to one aspect of the present disclosure includes a control unit that adjusts an active period during which a signal is received and a sleep period during which the signal is not received, and a receiving unit that receives the signal during the adjusted active period.

A base station according to one aspect of the present disclosure includes a control unit that generates a signal to be received during an active period after a cycle is adjusted, the active period having an active period during which a terminal receives a signal and a sleep period during which the terminal does not receive the signal, and a transmission unit that transmits the signal.

1 is a diagram illustrating an example of a wireless communication system according to an embodiment of the present disclosure. FIG. 1 is a diagram illustrating an example of a frequency range used in a wireless communication system according to an embodiment of the present disclosure. 1A to 1C are diagrams illustrating exemplary configurations of radio frames, subframes, and slots used in a radio communication system according to an embodiment of the present disclosure. FIG. 1 is a diagram illustrating CDRX in 3GPP Release 15. FIG. 1 is a diagram illustrating WUS in 3GPP Release 16. A diagram showing an example of the relationship between the reception period of the CDRX function and the arrival timing of XR traffic. FIG. 10 is a diagram illustrating a first example of a notification method. FIG. 10 is a diagram illustrating a second example of a notification method. FIG. 10 is a diagram illustrating a third example of a notification method. FIG. 10 is a diagram illustrating a fourth example of a notification method. FIG. 10 is a diagram illustrating a fifth example of a notification method. FIG. 10 illustrates a first example of application of adaptation. FIG. 10 is a diagram illustrating a second example of application of adaptation. FIG. 10 is a diagram illustrating a third example of application of adaptation. FIG. 10 is a diagram illustrating a fourth example of application of adaptation. FIG. 10 is a diagram illustrating a fifth example of application of adaptation. FIG. 2 is a block diagram illustrating an example of a configuration of a base station according to an embodiment of the present disclosure. FIG. 2 is a block diagram illustrating an example of a configuration of a terminal according to an embodiment of the present disclosure. FIG. 2 is a diagram illustrating an example of a hardware configuration of a base station and a terminal according to an embodiment of the present disclosure. 1 is a diagram illustrating an example of a configuration of a vehicle according to an embodiment of the present disclosure.

Below, an embodiment of one aspect of the present disclosure is described with reference to the drawings.

(Embodiment)
<Wireless communication system>
1 is a diagram illustrating an example of a wireless communication system 10 according to an embodiment of the present disclosure. The wireless communication system 10 is a wireless communication system conforming to 5G NR, and includes a Next Generation-Radio Access Network 20 (hereinafter, NG-RAN 20) and a terminal 200 (hereinafter, also referred to as UE (User Equipment) 200).

In addition, the wireless communication system 10 may be a wireless communication system conforming to a method called Beyond 5G, 5G Evolution, or 6G.

NG-RAN20 includes base station 100A (hereinafter also referred to as gNB100A) and base station 100B (hereinafter also referred to as gNB100B). Note that when there is no need to distinguish between gNB100A, gNB100B, etc., they are collectively referred to as gNB or base station 100. Furthermore, the number of gNBs and UEs is not limited to the example shown in Figure 1.

NG-RAN20 actually includes multiple NG-RAN nodes, specifically gNBs (or ng-eNBs), and is connected to a 5G-compliant core network (5GC, not shown). Note that NG-RAN20 and 5GC may also be simply referred to as "networks." In the following, gNB may also be read as network (NW).

As an example, gNB100A and gNB100B are base stations conforming to 5G and perform 5G wireless communication with UE200. gNB100A, gNB100B, and UE200 may support MIMO (Multiple-Input Multiple-Output), which generates a more directional beam BM by controlling radio signals transmitted from multiple antenna elements, carrier aggregation (CA), which aggregates and uses multiple component carriers (CCs), and dual connectivity (DC), which communicates between the UE and each of two NG-RAN nodes.

Furthermore, the wireless communication system 10 may support multiple frequency ranges (FR). Fig. 2 is a diagram showing an example of FRs used in the wireless communication system 10. As shown in Fig. 2, the wireless communication system 10 may support FR1 and FR2. The frequency bands of each FR are, for example, as follows:
・FR1: 410MHz ~ 7.125GHz
・FR2: 24.25GHz to 52.6GHz

FR1 may use a sub-carrier spacing (SCS) of 15 kHz, 30 kHz, or 60 kHz, and a bandwidth (BW) of 5 to 100 MHz. FR2 is a higher frequency than FR1, and may use an SCS of 60 kHz or 120 kHz (including 240 kHz), and a bandwidth (BW) of 50 to 400 MHz.

Note that SCS may also be interpreted as numerology, which is defined in 3GPP TS 38.300 and corresponds to one subcarrier spacing in the frequency domain.

Furthermore, the wireless communication system 10 may support higher frequency bands than the FR2 frequency band. Specifically, the wireless communication system 10 may support frequency bands above 52.6 GHz up to 114.25 GHz. For convenience, such high frequency bands may be referred to as "FR2x." When using bands above 52.6 GHz, CP-OFDM (Cyclic Prefix - Orthogonal Frequency Division Multiplexing)/DFT-S-OFDM (Discrete Fourier Transform - Spread - Orthogonal Frequency Division Multiplexing) with a larger SCS may be applied.

Figure 3 is a diagram showing an example of the configuration of a radio frame (system frame), subframe, and slot used in the wireless communication system 10. As shown in Figure 3, one slot consists of 14 symbols, and the larger (wider) the SCS, the shorter the symbol period (and slot period). However, the SCS is not limited to the interval (frequency) shown in Figure 3. For example, 480 kHz, 960 kHz, etc. may be used as the SCS.

Furthermore, the number of symbols constituting one slot does not necessarily have to be 14 symbols (for example, it may be 28 or 56 symbols, etc.). Furthermore, the number of slots per subframe may differ depending on the SCS.

Note that the time direction (t) shown in Figure 3 may also be called the time domain, symbol period, or symbol time. The frequency direction may also be called the frequency domain, resource block, subcarrier, bandwidth part (BWP), etc.

gNB100 transmits control information, configuration information, etc. to UE200 as a downlink (DL) signal to achieve power saving of gNB100.

Furthermore, for example, gNB100 receives control information for achieving power saving of gNB100, data signals, information regarding the processing capabilities of UE200 (terminal capabilities (information); for example, UE capability), etc. from UE200 as uplink (UL) signals.

Channels used to transmit DL signals include, for example, data channels and control channels. For example, the data channel may include a physical downlink shared channel (PDSCH), and the control channel may include a physical downlink control channel (PDCCH). For example, gNB100 transmits control information to UE200 using the PDCCH, and transmits DL data signals using the PDSCH. Note that PDSCH is an example of a downlink shared channel, and PDCCH is an example of a downlink control channel. Note that PDCCH may be interpreted as downlink control information (DCI), control information, etc. transmitted in the PDCCH.

Reference signals included in DL signals may include, for example, at least one of DMRS (Demodulation Reference Signal), PTRS (Phase Tracking Reference Signal), CSI-RS (Channel State Information - Reference Signal), SRS (Sounding Reference Signal), and PRS (Positioning Reference Signal) for positioning information. For example, reference signals such as DMRS and PTRS are used to demodulate DL data signals and are transmitted using the PDSCH.

UE200 is a communication device with wireless communication capabilities, such as a smartphone, mobile phone, tablet, wearable device, or M2M (Machine-to-Machine) communication module.

UE200 receives control signals or data signals from gNB100 in DL and transmits control signals or data signals to gNB100 in UL to utilize various communication services provided by wireless communication system 10. UE200 also receives various reference signals transmitted from gNB100 and performs measurements of propagation path quality based on the reception results of the reference signals.

For example, UE200 receives control information, configuration information, etc. from gNB100 as a DL signal to achieve power saving in gNB100.

Furthermore, for example, UE200 transmits control information, data signals, terminal capability information of UE200, etc. to gNB100 as UL signals to achieve power saving of gNB100.

Channels used to transmit UL signals include, for example, data channels and control channels. For example, the data channel may include a physical uplink shared channel (PUSCH), and the control channel may include a physical uplink control channel (PUCCH). For example, UE 200 transmits control information using the PUCCH and transmits UL data signals using the PUSCH. Note that PUSCH is an example of an uplink shared channel, and PUCCH is an example of an uplink control channel. Shared channels may also be referred to as data channels. Note that PUSCH or PUCCH may be interpreted as uplink control information (UCI), control information, etc. transmitted on the PUSCH or PUCCH.

Reference signals included in UL signals may include, for example, at least one of DMRS, PTRS, CSI-RS, SRSRS, and PRS for location information. For example, reference signals such as DMRS and PTRS are used to demodulate UL data signals and are transmitted using PUSCH.

<Device power saving>
Next, as an example of achieving power saving in a terminal, discontinuous reception (DRX) and connected mode DRX (CDRX) in a conventional terminal will be described.

Figure 4 is a diagram explaining CDRX in 3GPP Release 15. In CDRX operation in 3GPP Release 15, the terminal is active during the DRX on-duration in the DRX cycle and monitors the PDCCH during the DRX on-duration.

Figure 5 is a diagram explaining WUS in 3GPP Release 16. In 3GPP Release 16, PDCCH-based WUS can instruct one or more terminals whether they should monitor the PDCCH within the next DRX-on period.

DCI format 2_6, in which the CRC (Cyclic Redundancy Check) is scrambled by the PS-RNTI (Power Saving - Radio Network Temporary Identifier), is used for PDCCH-based WUS and is also called DCP (DCI with CRC scrambled by PS-RNTI).

The WUS monitoring occasion is set by an offset from the DRX on period based on the terminal capabilities. If the WUS indicates "Not Active" (i.e., the terminal is not transmitting or receiving data), the terminal can skip monitoring during the DRX on period and immediately transition to sleep mode.

In addition, a default terminal operation may be set in case PDCCH-based WUS is not detected, for example due to a detection error.

DCI format 2_6 includes a 1-bit wake-up indication (information) indicating "active" or "inactive." Note that active may be interpreted as enabled, enabled, or woken up, and inactive may be interpreted as disabled, disabled, or sleep.

Traditionally, this is one example of how power saving has been achieved on terminals.

<Current status of discussions on power saving>
Next, the status of discussions on power saving in 3GPP Release 18 will be described. In Release 18, enhancements to reducing terminal power consumption taking into account XR (Extended Reality) traffic are being considered. For example, reducing terminal power consumption taking into account XR traffic requires addressing the characteristics of XR services. Note that the characteristics of XR services include the periodicity of XR traffic, the occurrence of multiple flows, the occurrence of jitter, latency, and reliability. Note that XR (Extended Reality) is a general term for technologies such as VR (Virtual Reality), AR (Augmented Reality), and MR (Mixed Reality).

XR traffic is expected to arrive periodically according to FPS (frames per second).

One possible method for intermittently receiving periodically arriving XR traffic is to utilize the CDRX (Connected Mode Discontinuous Reception) function described above. Note that the DRX cycle and DRX on duration shown in Figure 5 can be considered to be the same as the CDRX cycle and CDRX on duration, respectively, in the following explanation.

Using the CDRX function to receive XR traffic intermittently has the following challenges:

Figure 6 shows an example of the relationship between the reception period of the CDRX function and the arrival timing of XR traffic. Figure 6 shows the cycle of the CDRX function, which has a sleep period and an active period, and the arrival timing of XR traffic. Figure 6 shows an example in which the cycle of the CDRX function is 20 ms and the arrival period of XR traffic is 16.67 ms.

While the arrival period of XR traffic is a non-integer value such as 6.67 ms, 8.33 ms, or 16.67 ms, the period in the CDRX function is specified as an integer value such as 10 ms or 20 ms. As a result, the arrival period of XR traffic and the period in the CDRX function are not aligned. As a result, as shown in Figure 6, XR traffic does not arrive during the active period of the period in the CDRX function, and the terminal may not be able to receive XR traffic.

In the following, the period of the CDRX function will be referred to as the CDRX cycle.

Jitter is expected to occur in XR traffic. Jitter corresponds to small fluctuations in time relative to the arrival timing of the original XR traffic. For example, for an XR traffic arrival period of 16.67 ms, jitter of up to [-4, 4] ms is expected.

For example, the effects of jitter increase the likelihood that XR traffic will arrive outside the CDRX on duration. If the likelihood of XR traffic arriving outside the CDRX on duration increases, the time required to receive the XR traffic increases, increasing reception delays. For example, if XR traffic arrives after the on duration, it is more likely that it will not be received until the next CDRX cycle, increasing reception delays.

For example, if the CDRX on duration is increased to avoid XR traffic arriving outside the CDRX on duration period due to the effects of jitter, the active time will increase and the terminal's power consumption will increase.

On the other hand, if the CDRX on duration is shortened to prevent an increase in terminal power consumption, the possibility of XR traffic arriving outside the CDRX on duration period increases, further increasing reception delays.

As mentioned above, if the periods are not aligned and/or jitter occurs, XR traffic may arrive outside the CDRX on duration. In other words, a discrepancy may occur between the timing (or arrival period) at which the signal transmitted by the base station arrives and the timing (or reception period) at which the terminal receives the signal, which could result in the terminal not being able to properly receive the signal transmitted from the base station.

In this embodiment, we propose a method of appropriately adapting the CDRX on duration (or CDRX active period) to prevent XR traffic from arriving outside the CDRX on duration. Here, adapting the CDRX on duration (or CDRX active period) may correspond to, for example, adapting the CDRX on duration (or CDRX active period) so that the time when XR traffic arrives is included in the CDRX on duration (or CDRX active period). Hereinafter, adapting the CDRX on duration (or CDRX active period) will be referred to as adaptation of the CDRX on duration (or CDRX active period).

In the following explanation, adaptation regarding CDRX on duration may be abbreviated as "adaptation."

Note that CDRX on duration may be read as CDRX active period. Also, CDRX on duration may be interchangeable with other expressions such as on period, active period, and wake-up period. Below, CDRX on duration is abbreviated as on period as appropriate. Also, in the CDRX cycle, a period different from the CDRX on duration may be referred to as a sleep period. An on period is an example of a period in which the terminal can receive a signal, and a sleep period is an example of a period in which the terminal cannot receive a signal. Note that there may be a signal that the terminal can receive during a sleep period.

Proposal 1 shows a method of notifying or specifying (information related to) adaptation regarding CDRX on duration. For example, in Proposal 1, adaptation regarding CDRX on duration may be notified to the terminal, or may be specified in advance. Here, the base station (or the network side) may notify the terminal of the adaptation. Upon receiving the notification of the adaptation, the terminal applies the adaptation regarding CDRX on duration. Alternatively, the terminal applies the adaptation regarding CDRX on duration in accordance with the specification.

Note that notification of adaptation may be replaced with notification of information related to adaptation. The information notified to the terminal may be included, for example, in a signal transmitted from the base station to the terminal. Notification of information to the terminal may correspond to reception of the information at the terminal.

Note that "regulation" may mean being determined by specifications, rules, etc., or may correspond to the determined content. Alternatively, regulation may mean being implemented in a communication device (e.g., a base station or terminal), or may correspond to the implemented function. Note that, for example, the determination of certain content may not necessarily involve notification of that content, or may involve notification of that content. Also, for example, notification of certain content may involve the determination of that content and then notification of the determined content, or the information may not necessarily be determined.

In proposals 2 to 4, the adapted element is indicated as the adaptation related to CDRX on duration. The adapted element may be an adjusted element (or parameter).

Proposal 2 shows an example of an adaptation related to CDRX on duration, in which the adaptation of the start position of CDRX on duration is notified or specified. In other words, Proposal 2 shows an example in which the parameter to be adjusted is the start position of CDRX on duration.

Proposal 3 shows an example of an adaptation related to CDRX on duration, in which the adaptation of the duration of CDRX on duration is notified or specified. In other words, Proposal 3 shows an example in which the parameter to be adjusted is the duration of CDRX on duration.

Proposal 4 shows an example in which adaptation of the CDRX cycle length is notified or specified as an example of adaptation related to CDRX on duration. In other words, Proposal 4 shows an example in which the parameter to be adjusted is the CDRX cycle length.

Note that adaptation may be replaced with other terms such as control, adjustment, management, change, arrangement, and rearrangement. For example, adaptation regarding CDRX on duration may be replaced with terms such as control regarding CDRX on duration or adjustment regarding CDRX on duration.

Each proposal is explained below.

<Proposal 1>
In Proposal 1, the terminal may be notified of or specified about adaptation regarding CDRX on duration.

The method for notifying the adaptation regarding CDRX on duration is not particularly limited. For example, the adaptation regarding CDRX on duration may be notified by at least one of DCI (downlink control information), information exchanged in the MAC (medium access control) layer (e.g., MAC CE (control element)), and information signaled by RRC (radio resource control). Information signaled by RRC may be referred to as an RRC information element or information notified by RRC signaling.

Notifying adaptation regarding CDRX on duration may be equivalent to notifying information regarding adaptation. The information regarding adaptation may include at least one of information indicating whether or not to apply adaptation, information indicating the position of the CDRX on duration to which adaptation is applied, and information indicating the element to be adapted.

In addition, conditions and/or procedures for performing adaptation regarding CDRX on duration may be specified. The conditions and/or procedures for performing adaptation regarding CDRX on duration may be conditions and/or procedures for determining whether or not to perform adaptation. Alternatively, the conditions and/or procedures for performing adaptation regarding CDRX on duration may be conditions and/or procedures for determining the position of the CDRX on duration to which adaptation is applied when information about adaptation is notified. The conditions and/or procedures for performing adaptation regarding CDRX on duration may be conditions and/or procedures for determining (or adjusting) the elements (parameters) for performing adaptation.

Information about adaptation may be signaled using multiple methods. For example, part of the information about adaptation may be signaled by DCI, and the remaining part may be signaled by RRC signaling. Also, part of the information about adaptation may be predefined, and the remaining part may be signaled by DCI.

<Proposal 1-1>
Proposal 1-1 explains two examples of notification methods.

Figure 7 is a diagram showing a first example of a notification method. Figure 7 shows two examples, Example 1 and Example 2. The horizontal axis in each example in Figure 7 represents the time axis. Each example in Figure 7 shows that the CDRX on duration and the CDRX sleep period occur periodically.

In the following, CDRX on duration may be abbreviated as "on period" and CDRX sleep period may be abbreviated as "sleep period".

In each example of Figure 7, one rectangle corresponds to a time interval having a certain time width. Below, one rectangle may be referred to as one "unit interval." However, one unit interval does not have to correspond to a specific time interval defined by specifications, etc. For example, one unit interval in each example of Figure 7 does not have to correspond to a specific time interval such as one symbol, one slot, or one frame.

Note that one unit interval may correspond to a specific time interval defined by specifications, etc., or multiple unit intervals may correspond to one specific time interval, or a specific first number of unit intervals may correspond to a specific second number of time intervals. Note that the first number may be different from the second number.

Furthermore, each example in Figure 7 shows an example in which one cycle (CDRX cycle) includes an on period having two unit intervals and a sleep period having a length of three unit intervals, but the present disclosure is not limited to this.

In addition, for ease of explanation, each example in Figure 7 shows an identification number that identifies the on-period. Note that, although identification numbers are shown in Figure 7 for ease of explanation, if the terminal performs reception control using the CDRX function, an identification number does not need to be set for each on-period. Also, the identification numbers in each example in Figure 7 are numbers based on the relative positional relationship of each on-period, and do not need to be numbers that indicate an absolute position. For example, in each example in Figure 7, the on-period marked "#1" does not need to indicate the earliest on-period in the terminal.

In the following, the on-period marked "#1" will be referred to as on-period #1.

In example 1 of Figure 7, information regarding adaptation is notified in on period #1. In example 1 of Figure 7, the terminal receives information regarding adaptation in on period #1 and applies adaptation in on period #2. Here, applying adaptation in on period #2 may correspond to adjusting parameters related to on period #2. For example, the parameters related to on period #2 may be at least one of the start position, end position, and length of on period #2.

In addition, the information regarding the received adaptation may be included in a control channel (e.g., PDCCH), a data channel (e.g., PDSCH), or other channel. Furthermore, the information regarding the received adaptation may be included in at least one of DCI, information exchanged at the MAC layer (e.g., MAC CE), and information signaled by RRC.

In example 2 of Figure 7, information about adaptation is notified during the sleep period between on period #1 and on period #2. In example 2 of Figure 7, information about adaptation is notified using DCI format 2_6 (e.g., a wake-up signal) that the terminal can receive during the sleep period. In example 2 of Figure 7, the terminal receives information about adaptation using DCI format 2_6 and applies adaptation during on period #2.

Note that, although Example 2 of Figure 7 shows an example in which information related to adaptation is notified using DCI format 2_6, the present disclosure is not limited to this. For example, information related to adaptation may be notified using at least one of the notification methods in DCI, MAC, and RRC. Information related to adaptation may be notified during an on period, as shown in Example 1 of Figure 7, or may be notified during a sleep period, as shown in Example 2 of Figure 7. Alternatively, information related to adaptation may be notified before performing the operation of the CDRX function (e.g., before performing discontinuous reception).

As described above, in Proposal 1-1, the terminal applies adaptation during the on-period immediately after receiving information about adaptation (on-period #2 in Figure 7). This allows the terminal to perform appropriate reception processing during the on-period in which adaptation is applied promptly. In addition, since signals can be received promptly, reception delays can be avoided.

<Proposal 1-2>
In the above-described Proposal 1-1, an example has been shown in which adaptation is applied in the on-duration immediately after the timing at which information on adaptation is received (on-duration #2 in FIG. 7 ), but the present disclosure is not limited to this. In Proposal 1-2, information on adaptation related to future CDRX on durations may be notified, instead of the CDRX on duration immediately after the information on adaptation is notified.

Figure 8 is a diagram showing a second example of a notification method. Similar to Figure 7, Figure 8 shows two examples, Example 1 and Example 2. The horizontal axis of each example in Figure 8 represents the time axis.

Each example in Figure 8, similar to Figure 7, shows an example in which one cycle (CDRX cycle) includes an on period having two unit intervals and a sleep period having a length of three unit intervals.

Figure 7 shows an example in which adaptation is applied in on-period #2, which corresponds to the on-period immediately after information about adaptation is notified, while Figure 8 shows an example in which adaptation is applied not in on-period #2 immediately after information about adaptation is notified, but in on-period #3, which corresponds to the next on-period.

In example 1 of Figure 8, information regarding adaptation is notified during on-period #1. In example 1 of Figure 8, the terminal receives information regarding adaptation during on-period #1 and applies the adaptation during on-period #3.

In example 2 of Figure 8, information about adaptation is notified during the sleep period between on period #1 and on period #2. In example 2 of Figure 8, information about adaptation is notified by DCI format 2_6 (e.g., a wake-up signal) that the terminal can receive during the sleep period. In example 2 of Figure 8, the terminal receives information about adaptation by DCI format 2_6 and applies adaptation during on period #3.

Note that which on-periods adaptation is applied to may be notified or specified. Note that, hereinafter, information indicating which on-periods adaptation is applied to may be referred to as information about on-periods to which adaptation is applied. Information about on-periods to which adaptation is applied may be included in information about adaptation, or may be notified separately from information about adaptation.

Information regarding the on-period to which adaptation is applied may or may not be notified to the terminal. In each example of Figure 8, information indicating that the on-period to which adaptation is applied is on-period #3 may or may not be notified to the terminal.

If information regarding the on-period to which adaptation is applied is notified, the terminal may determine the on-period to which adaptation is applied based on the information regarding the on-period to which adaptation is applied.

If information regarding the on-period to which adaptation is applied is not notified, the terminal may determine the on-period to which adaptation is applied based on the timing at which the information regarding adaptation is received and specific conditions. In other words, in this case, the terminal may determine the on-period to which adaptation is applied based on a specification regarding which on-period to which adaptation is applied.

For example, as one determination method, the terminal may determine that the Nth (N is an integer greater than or equal to 1) on-period that occurs after the timing at which information about adaptation is received is the on-period to which adaptation is applied. Note that the examples in Figure 7 can be considered to correspond to the case where N = 1 in this determination method, and the examples in Figure 8 can be considered to correspond to the case where N = 2 in this determination method.

As described above, in Proposal 1-2, the terminal applies adaptation during the on-period (on-period #3 in Figure 8) after a specific time (for example, a specific number of on-periods) has elapsed since receiving the information about adaptation. This allows adaptation to be applied at the appropriate time, enabling appropriate reception processing. This also makes it possible to control the time from receiving the information about adaptation to applying the adaptation, ensuring that the terminal has enough time to start applying adaptation and can receive signals during the on-period in which adaptation has been applied, enabling appropriate reception processing. This also avoids a situation in which the terminal is unable to apply adaptation in time after receiving the information about adaptation, resulting in failure to receive the signal and a reception delay.

In addition, Proposal 1-2 allows information about adaptation to be notified at any timing prior to the on-period in which adaptation is applied, enabling flexible notification. For example, early notification is possible so that adaptation can be applied in accordance with the timing of XR traffic predicted in advance. In addition, information about adaptation can be notified together in accordance with the timing of notifying other control information, enabling efficient notification.

<Proposal 1-3>
Although the above-described proposals 1-1 and 1-2 show examples in which adaptation is applied during one on-period, the present disclosure is not limited to this. The following proposal 1-3 shows an example in which adaptation is applied during multiple on-periods.

Figure 9 is a diagram showing a third example of a notification method. Figure 9 shows two examples, Example 1 and Example 2. The horizontal axis of each example in Figure 9 represents the time axis.

Each example in Figure 9, similar to Figures 7 and 8, shows an example in which one cycle (CDRX cycle) includes an on period having two unit intervals and a sleep period having a length of three unit intervals.

In example 1 of Figure 9, information regarding adaptation is notified during on period #1. In example 1 of Figure 9, the terminal receives information regarding adaptation during on period #1, applies adaptation during on period #3, and does not apply adaptation during on period #2 or on period #4 and beyond. In other words, in example 1 of Figure 9, the terminal may apply adaptation only during on period #3.

In example 2 of Figure 9, information regarding adaptation is notified during on-period #1. In example 2 of Figure 9, the terminal receives information regarding adaptation during on-period #1, applies adaptation during on-periods #2 and #3, and does not apply adaptation from on-period #4 onwards. In other words, in example 2 of Figure 9, the terminal may apply adaptation only during on-periods #2 and #3.

In example 2 of Figure 9, an example is shown in which adaptation is applied to on-periods #2 and #3 that are adjacent in time, but it may also be notified that adaptation is applied to multiple on-periods that are not adjacent in time (e.g., on-periods #2 and #4).

As with Proposal 1-2, the on-period to which adaptation is applied may be notified or specified.

For example, if a terminal is notified of information indicating which on-periods adaptation should be applied to (e.g., information regarding on-periods to which adaptation should be applied), adaptation may be applied only to the notified on-periods. In this case, adaptation may be applied to the notified on-periods, and may not be applied to on-periods other than the notified on-period.

Also, for example, if it is specified which on-periods adaptation is to be applied to, adaptation may be applied only to the specified on-periods. In this case, adaptation may be applied to the specified on-periods, and adaptation may not be applied to on-periods other than the specified on-periods.

Furthermore, for example, which on-periods are the one or more on-periods to which adaptation is applied may be notified or specified. Note that information indicating which on-periods are the one or more on-periods to which adaptation is applied may be included in information regarding the on-periods to which adaptation is applied.

For example, at least one of the following may be notified or specified: the number of on-periods to which adaptation is applied, the duration to which adaptation is applied, the start position of multiple on-periods to which adaptation is applied, and the end position of an on-period to which adaptation is applied. Furthermore, the cycle to which adaptation is applied may be notified or specified. The cycle to which adaptation is applied may indicate, for example, that adaptation is applied to one on-period out of four temporally adjacent on-periods, and not applied to the remaining three.

Note that the start position of the on-period to which adaptation is applied and/or the end position of the on-period to which adaptation is applied may be notified or specified as an absolute position. Alternatively, the start position of the on-period to which adaptation is applied and/or the end position of the on-period to which adaptation is applied may be notified or specified as a relative position based on a certain position. The certain position may be, for example, the position (or timing) at which information about adaptation is received, the position (or timing) at which reception by CDRX begins, or some other position (or timing).

Furthermore, the start position of the on period to which adaptation is applied and/or the end position of the on period to which adaptation is applied may be represented by the SFN (System Frame Number) position, slot position, and symbol position.

The application period for which the adaptation is applied may be notified or specified. For example, the application period for which the adaptation is applied may be notified or specified using a timer.

Note that while each example in FIG. 9 illustrates an example in which information related to adaptation is notified during an on-period (e.g., on-period #1), the present disclosure is not limited to this. For example, as shown in example 2 in FIG. 7, information related to adaptation may be notified using DCI format 2_6.

As described above, in Proposals 1-3, the terminal applies adaptation to one or more on-periods based on the regulations and/or notifications. This allows the terminal to perform appropriate reception processing during the multiple on-periods to which adaptation is applied, even if, for example, there is a discrepancy between the arrival timing of the base station signal and the on-period at an interval corresponding to multiple on-periods. Furthermore, because information regarding adaptation for multiple on-periods can be notified together, the number of times information regarding adaptation is notified can be reduced, and the increase in power consumption required for receiving information can be suppressed.

<Proposal 1-4>
Proposals 1-4 show examples where adaptation is applied continuously.

Figure 10 is a diagram showing a fourth example of a notification method. Figure 10 shows two examples, Example 1 and Example 2. The horizontal axis of each example in Figure 10 represents the time axis.

Each example in Figure 10, similar to Figures 7 to 9, shows an example in which one cycle (CDRX cycle) includes an on period having two unit intervals and a sleep period having a length of three unit intervals.

In example 1 of Figure 10, information regarding adaptation is notified during on-period #1. In example 1 of Figure 10, the terminal receives information regarding adaptation during on-period #1 and applies adaptation during each on-period from on-period #2 onwards.

In example 2 of Figure 10, information regarding adaptation is notified during on-period #1. In example 2 of Figure 10, the terminal receives information regarding adaptation during on-period #1 and applies adaptation during each on-period from on-period #3 onwards.

As with Proposal 1-2 and Proposal 1-3, the on-period to which adaptation is applied may be notified or specified.

For example, if a terminal is notified of information indicating which on-period to which adaptation is to be applied (e.g., information regarding the on-period to which adaptation is to be applied), adaptation may be applied continuously to the notified on-period and to on-periods following that on-period.

For example, in example 1 of Figure 10, if the terminal is notified of information indicating that the on-period to which adaptation is applied is on-period #2, the terminal continuously applies adaptation in on-period #2 and on-periods after on-period #2.

Furthermore, for example, if it is specified which on-period the adaptation is to be applied to, the adaptation may be applied to the specified on-period and to on-periods after that on-period.

For example, in example 1 of Figure 10, if the on-period to which adaptation is applied is specified as on-period #2, the terminal continuously applies adaptation in on-period #2 and on-periods after on-period #2.

Whether or not to apply adaptation continuously may be notified or specified. For example, whether or not to apply adaptation continuously may be switched based on specific conditions. For example, the terminal may decide whether or not to apply adaptation continuously based on specific conditions.

Note that while each example in FIG. 10 illustrates an example in which information related to adaptation is notified during an on-period (e.g., on-period #1), the present disclosure is not limited to this. For example, as shown in example 2 in FIG. 7, information related to adaptation may be notified using DCI format 2_6.

As described above, in Proposals 1-4, the terminal applies adaptation to multiple consecutive on-periods based on the specifications and/or notifications. This allows the terminal to perform appropriate reception processing during multiple on-periods to which adaptation has been applied, even if, for example, there is a persistent discrepancy between the arrival timing of a signal from the base station and the on-period. Furthermore, because information regarding adaptation for multiple on-periods can be notified together, the number of times information regarding adaptation is notified can be reduced, and the increase in power consumption required for receiving information can be suppressed.

In Proposals 1-4, when the application of continuous adaptation is stopped, information indicating that the application of adaptation is stopped may be notified. Furthermore, when the applied adaptation is switched, information indicating that the application of adaptation is switched may be notified. Here, switching adaptation may correspond to, for example, switching the element to be adapted and/or switching the content of the adaptation.

<Proposal 1-5>
Proposal 1-5 shows an example in which a time constraint is set from when information about adaptation is notified until when the application of adaptation can start.

Note that time constraints may be replaced with other notations such as timelines, application delays, etc.

Proposals 1-5 include Alternation 1 (Alt.1) and Alternation 2 (Alt.2) shown below.

(Alt.1)
When information about adaptation is notified to a terminal, the application destination of the adaptation may be notified so as to satisfy the time constraint. In other words, the terminal does not assume that an application destination of adaptation that does not satisfy the time constraint will be notified. In this case, the terminal may assume that an application destination of adaptation that satisfies the time constraint will be notified. Here, the application destination of the adaptation may be at least one on-duration to which the adaptation is applied.

(Alt.2)
The terminal may start applying adaptation after being notified of information about adaptation and after the time constraint is satisfied. In this case, the terminal does not start applying adaptation from the time when the information about adaptation is notified until the time constraint is satisfied.

In Alt.1, the terminal does not need to determine whether the time constraint is met; the base station determines where to apply the adaptation so that the time constraint is met and notifies the terminal of the adaptation destination that meets the time constraint.On the other hand, in Alt.2, the terminal determines whether the time constraint is met and, based on that determination, decides where to apply the adaptation.

Figure 11 shows a fifth example of a notification method. Figure 11 shows two methods, Alt.1 and Alt.2. The horizontal axis of Alt.1 and Alt.2 in Figure 11 represents the time axis.

Alt.1 and Alt.2 in Figure 11 show an example in which one cycle (CDRX cycle) includes an on period having two unit intervals and a sleep period having a length of three unit intervals, similar to Figures 7 to 10. Also, Alt.1 and Alt.2 in Figure 11 show the time intervals constrained as "time constraints."

In Alt.1 of Figure 11, information regarding adaptation is notified to the terminal during on-period #1. In Alt.1 of Figure 11, on-period #2 is an on-period within the time interval constrained by the "time constraint." In other words, on-period #2 is an on-period that does not satisfy the time constraint. Therefore, on-period #2 is not included in the applications of adaptation. In this case, the terminal does not need to assume notification of information indicating that on-period #2 is the application of adaptation. Also, in this case, the terminal may assume notification of information indicating that on-periods from on-period #3 onwards are the applications of adaptation.

In Alt.2 of Figure 11, information regarding adaptation is notified to the terminal during on-period #1. Then, in Alt.2 of Figure 11, on-period #2 is an on-period within the time interval constrained by the "time constraint." In other words, on-period #2 is an on-period that does not satisfy the time constraint. In this case, the terminal determines that on-period #2 is an on-period that does not satisfy the time constraint, and determines that on-period #3 is an on-period that satisfies the time constraint. Then, the terminal applies adaptation from on-period #3 onwards.

Note that while Figure 11 shows an example in which adaptation is applied to on-periods #4 and beyond that satisfy the time constraint, the present disclosure is not limited to this. For example, the range of on-periods that satisfy the time constraint to which adaptation is applied may be specified or notified. For example, it may be specified or notified that adaptation is applied to the earliest K on-periods (K is an integer greater than or equal to 1) of on-periods that satisfy the time constraint.

Information regarding time constraints may be specified or notified. For example, at least one of the length of time constrained as a time constraint, the start position (or reference position) of the time constrained as a time constraint, etc. may be specified or notified.

The start position (or reference position) of the time constrained as a time constraint may be, for example, the timing when information about adaptation is notified, or the start position or end position of the on-period when information about adaptation is notified.

Note that while FIG. 11 shows an example in which information related to adaptation is notified during an on-period (e.g., on-period #1), the present disclosure is not limited to this. For example, as shown in example 2 of FIG. 7, information related to adaptation may be notified using DCI format 2_6. In this case, the start position (or reference position) of the time constrained as the time constraint may be the timing when DCI format 2_6 is notified, or the start position or end position of the on-period that occurs immediately after the timing when DCI format 2_6 is notified.

As described above, in Proposals 1-5, the terminal applies adaptation during the on-period (on-period #3 in Figure 11) after the time period constrained based on the time constraint has elapsed since receiving the information about adaptation. This allows adaptation to be applied at the appropriate timing, enabling appropriate reception processing. Furthermore, this makes it possible to control the time between receiving the information about adaptation and applying the adaptation, thereby ensuring the time required for the terminal to start applying adaptation and allowing signals to be received during the on-period in which adaptation has been applied, enabling appropriate reception processing.

As explained above, in Proposal 1, adaptation related to CDRX on duration is notified to or specified to the terminal. In this case, in Proposal 1, the terminal applies adaptation during the on period at the appropriate timing after receiving information related to adaptation. This avoids a discrepancy between the arrival timing of the signal from the base station and the reception timing (reception period) of the terminal, allowing the terminal to perform appropriate reception processing.

In addition, information indicating whether or not Proposal 1 described above is supported may be specified or notified. For example, UE capability indicating whether or not Proposal 1 described above is supported may be specified or notified. UE capability is an example of terminal capability information, and may be notified from the terminal to the base station.

Furthermore, for example, a UE capability indicating whether or not at least one of the examples shown in Proposal 1-1 to Proposal 1-5 or each Alt is supported may be specified or notified. When a UE capability indicating whether or not two or more of the examples shown in Proposal 1-1 to Proposal 1-5 or each Alt are supported is specified, the UE capability indicating whether or not the two or more are supported may each be specified as an individual UE capability, or may be specified as a common UE capability.

For example, a UE capability may be defined that indicates whether or not information related to adaptation is supported to be notified during the on period, as shown in Example 1 of Figure 7. Also, a UE capability may be defined that indicates whether or not information related to adaptation is supported to be notified by DCI format 2_6, as shown in Example 2 of Figure 7. Each of these UE capabilities may be defined as an individual UE capability, or may be defined as a common UE capability.

Furthermore, for example, as shown in FIG. 11, a UE capability related to the time constraint until the start of adaptation application may be specified or notified. For example, the time constraint that a terminal can support may be specified or notified as a UE capability. For example, multiple UE types that can support different time constraints may be specified, and the terminal may notify information indicating which of the specified UE types it is as a UE capability. Here, different time constraints may be time constraints in which at least one of the length of the time constrained as a time constraint and the start position (or reference position) of the time constrained as a time constraint differs from each other.

Note that, while the examples of Proposal 1 described above show examples in which information related to adaptation is notified during one on period or sleep period (e.g., DCI format 2_6), the present disclosure is not limited to this. For example, information related to adaptation may be notified during multiple on periods, multiple sleep periods (e.g., DCI format 2_6), or a combination of on periods and sleep periods. The method of notification may be specified in advance, may be notified to the terminal, or may be notified to the base station as the terminal's UE capability.

<Proposal 2>
In Proposal 2, the adaptation of the position of the CDRX on duration may be notified or specified.

<Proposal 2-1>
In Proposal 2-1, the terminal shifts the start position of an on-period to which adaptation is applied. Note that shifting the start position of an on-period to which adaptation is applied may correspond to shortening or extending the length of a sleep period immediately before the on-period to which adaptation is applied.

In the following, an on-period to which adaptation is applied by notification or regulation may be referred to as on-period #X (X is an integer greater than or equal to 1). Furthermore, an on-period following on-period #X may be referred to as on-period #Y (Y is an integer greater than X).

The number of on-periods to which adaptation is applied (e.g., the number of Xs) may be one or more. Furthermore, the number of on-periods following on-period #X (e.g., the number of Ys) may be one or more. If there are multiple Xs, Y may be an integer greater than the largest X among the multiple Xs.

For example, if there are multiple on-periods to which adaptation is applied by notification or regulation, on-period #X may correspond to the earliest on-period among the multiple on-periods. In this case, the notification or regulation may indicate that adaptation is applied to a portion of on-period #Y.

In Proposal 2-1, the length of on period #X does not need to be changed. In Proposal 2-1, the length of on period #X may be the same as when adaptation is not applied. In other words, in Proposal 2, the end position of on period #X may be shifted in accordance with the change in the start position of on period #X. In this case, the shift amount and time direction for shifting the start position of on period #X may be the same as the shift amount and time direction for shifting the end position of on period #X.

In addition, in Proposal 2-1, any of the Alts listed below may be applied to the start position of the on-period (e.g., on-period #Y) that follows the on-period (e.g., on-period #X) to which adaptation is applied.

(Alt.1)
The start position of on-period #Y when adaptation is not applied is maintained. In this case, the length of the sleep period between on-period #X and the on-period #Y following on-period #X is extended. Here, the amount by which the length of the sleep period is changed may be the same as the amount by which the start position of on-period #X is shifted.

Note that an extension of the length of a period may simply be referred to as an extension of the period. "Extension" may also be replaced with other expressions such as "increase," "expansion," or "expansion."

Note that a shortening of the length of a period may simply be referred to as shortening the period. "Shortening" may also be replaced with other terms such as "decrease" or "reduction." The length of a period may also be referred to as the period length or interval.

(Alt.2)
The cycle when adaptation is not applied is maintained. In other words, in this case, the start position of on period #Y is also shifted in the same way as the start position of on period #X is shifted. Here, the amount of shift in the start position of on period #Y may be the same as the amount of shift in the start position of on period #X.

(Alt.3)
As with Alt.2, the period is maintained, but unlike Alt.2, adaptation is also applied to on-period #Y. In this case, the start positions of on-period #X and on-period #Y are shifted. In other words, in Alt.3, the period after adaptation is applied is maintained in each CDRX cycle.

Examples of Alt.1 to Alt.3 are explained using Figure 12.

Figure 12 is a diagram showing a first example of the application of adaptation. Figure 12 shows an example in which adaptation is not applied ("No Adaptation") and an example in which adaptation is applied during on-period #2 ("With Adaptation"). In the example in which adaptation is applied during on-period #2, three examples, Alt.1 to Alt.3, are shown separately. Note that the horizontal axis in Figure 12 represents the time axis.

Each example in Figure 12, similar to Figures 7 to 11, shows an example in which one cycle (CDRX cycle) when adaptation is not applied includes an on period having two unit intervals and a sleep period having a length of three unit intervals.

In Figure 12, adaptation is applied in on period #2. In other words, in this case, on period #X corresponds to on period #2, and on period #Y corresponds to on period #3 and onwards. In this example, the start position of on period #2 is shifted forward by one unit interval. Note that the amount of shift is not limited to this. Note that shifting the start position of on period #2 forward by one unit interval may be equivalent to shortening the length of the sleep period before on period #2 by one unit interval.

In Alt. 1 of the example in which adaptation is applied in Figure 12, the start position of on period #3 is maintained at the same position as in the example in which adaptation is not applied. Maintaining the start position of on period #3 at the same position as in the example in which adaptation is not applied may be equivalent to extending the length of the sleep period between on period #2 and on period #3.

Note that, in Alt. 1, it was stated that the start and end positions of an on-period #Y following an on-period #X to which adaptation is applied are maintained at the same positions as those of an on-period #Y when adaptation is not applied, but the present disclosure is not limited to this. For example, the start and end positions of an on-period #Y following an on-period #X to which adaptation is applied may gradually approach the same positions as those of an on-period #Y when adaptation is not applied.

To explain this with reference to Alt. 1 of Figure 12, for example, if the start and end positions of on period #2 are shifted forward by a shift amount ΔT2, the start and end positions of on period #3 may also be shifted forward by a shift amount ΔT3, which is smaller than the shift amount ΔT2. The start and end positions of on period #4 are then maintained at the same positions as on period #4 when adaptation is not applied. In this way, the further away an on period is from on period #2, the closer it may be to the same positions as on period #Y when adaptation is not applied.

In Alt. 2 of Figure 12, an example in which adaptation is applied, the CDRX cycle from on-period #2 onwards is maintained at the same period as in the example in which adaptation is not applied. In this case, the start positions of each on-period from on-period #3 onwards are shifted forward by one unit interval relative to their start positions when adaptation is not applied.

Note that, although Alt. 2 shows an example in which the period when no adaptation is applied is maintained, the present disclosure is not limited to this. For example, the period may be shifted in stages to approach the period when no adaptation is applied.

To explain this using Alt. 2 of Figure 12, for example, if the start and end positions of on period #2 are shifted forward by a shift amount ΔT2 (one unit interval in Figure 12), the start and end positions of on period #3 may be shifted forward by a shift amount ΔT3 (e.g., half the length of a unit interval) that is smaller than the shift amount ΔT2. Then, the start and end positions of on period #4 are maintained at the same positions as on period #4 when adaptation is not applied. In this way, the CDRX cycle further away from on period #2 may gradually approach the same period as when adaptation is not applied.

In Alt.3 of the example in Figure 12 where adaptation is applied, the CDRX cycle from on period #2 onwards is maintained at the same period as when adaptation is applied. Here, the period when adaptation is applied may be a period that includes an on period having two unit intervals and a sleep period having a length of two unit intervals.

As shown in Alt. 3 of the example in which the adaptation in Figure 12 is applied, the CDRX cycles from on period #2 onwards each include an on period having two unit intervals and a sleep period having a length of two unit intervals.

Note that while Figure 12 shows an example in which the start position is shifted, the present disclosure is not limited to this. The end position may be shifted instead of the start position. An example in which the end position is shifted will be explained using Figure 13.

Figure 13 is a diagram showing a second example of the application of adaptation. As with Figure 12, Figure 13 shows an example in which adaptation is not applied ("No Adaptation") and an example in which adaptation is applied during on-period #2 ("With Adaptation"). In the example in which adaptation is applied during on-period #2, three examples, Alt.1 to Alt.3, are shown separately, as with Figure 12. Note that the horizontal axis in Figure 13 represents the time axis.

Each example in Figure 13, similar to Figures 7 to 11, shows an example in which one cycle (CDRX cycle) when adaptation is not applied includes an on period having two unit intervals and a sleep period having a length of three unit intervals.

In an example where adaptation is applied to on period #2 in Figure 13, the start position of on period #2 is shifted back by one unit interval. Note that the amount of shift is not limited to this. Note that shifting the start position of on period #2 back by one unit interval may be equivalent to extending the length of the sleep period before on period #2 by one unit interval.

In Alt. 1 of the example in which adaptation is applied in Figure 13, the start position of on period #3 is maintained at the same position as in the example in which adaptation is not applied. Maintaining the start position of on period #3 at the same position as in the example in which adaptation is not applied may be equivalent to shortening the length of the sleep period between on period #2 and on period #3.

In Alt.2 of Figure 13, an example in which adaptation is applied, the CDRX cycle from on-period #2 onwards is maintained at the same period as in the example in which adaptation is not applied. In this case, the start positions of each on-period from on-period #3 onwards are shifted back by one unit interval relative to their start positions when adaptation is not applied.

In Alt.3 of the example in Figure 13 where adaptation is applied, the CDRX cycle from on period #2 onwards is maintained at the same period as when adaptation is applied. Here, the period when adaptation is applied may be a period including an on period having two unit intervals and a sleep period having a length of four unit intervals.

As shown in Alt. 3 of the example in which the adaptation in Figure 13 is applied, the CDRX cycles from on period #2 onwards each include an on period having two unit intervals and a sleep period having a length of four unit intervals.

As described above, in Proposal 2-1, the terminal shifts the position (start and end positions) of the on-period to which adaptation is applied in the time direction. This avoids a discrepancy between the arrival timing of the base station signal and the reception timing (reception period) of the terminal, allowing the terminal to perform reception processing appropriately. Furthermore, in Proposal 2-1, the length of the on-period is not changed, so increases in power consumption at the terminal can be suppressed.

<Proposal 2-2>
Proposal 2-1 shows an example in which, during an on-period to which adaptation is applied (on-period #X), the start position of on-period #X is shifted and the end position of on-period #X is shifted. Proposal 2-2 shows an example in which, during an on-period to which adaptation is applied (on-period #X), the start position of on-period #X is shifted while the end position of on-period #X is maintained at the same position as when adaptation is not applied. By shifting the start position of on-period #X and maintaining the end position of on-period #X at the same position as when adaptation is not applied, the length of on-period #X is changed.

In addition, in Proposal 2-2, any of the Alts listed below may be applied to the start position of the on-period (e.g., on-period #Y) that follows the on-period (e.g., on-period #X) to which adaptation is applied.

(Alt.1)
The start and end positions of the on-period #Y when adaptation is not applied are maintained, and the length of the sleep period between on-period #X and on-period #Y is not changed.

(Alt.2)
The start position of on period #Y is shifted in the same manner as the start position of on period #X. The end position of on period #Y is also shifted in the same manner as the start position of on period #X. Here, the shift amounts of the start position and end position of on period #Y may be the same as the shift amount of the start position of on period #X.

(Alt.3)
In Alt.1 and Alt.2, no adaptation is applied to the on-period #Y, but in Alt.3, adaptation is also applied to the on-period #Y. In this case, the start position of the on-period #Y is shifted in the same way as the start position of the on-period #X is shifted. And, like the end position of the on-period #X, the end position of the on-period #Y is maintained at the same position as when no adaptation is applied. In other words, in Alt.3, the period after adaptation is applied is maintained in each CDRX cycle.

Figure 14 is a diagram showing a third example of the application of adaptation. Figure 14 shows an example in which adaptation is not applied ("without adaptation") and an example in which adaptation is applied during on-period #2 ("with adaptation"). In the example in which adaptation is applied during on-period #2, three examples, Alt.1 to Alt.3, are shown separately. Note that the horizontal axis in Figure 14 represents the time axis.

Each example in Figure 14, similar to Figures 7 to 11, shows an example in which one cycle (CDRX cycle) when adaptation is not applied includes an on period having two unit intervals and a sleep period having a length of three unit intervals.

In an example where adaptation is applied to on period #2 in Figure 14, the start position of on period #2 is shifted forward by one unit interval. Note that the amount of shift is not limited to this. Note that shifting the start position of on period #2 forward by one unit interval may be equivalent to shortening the length of the sleep period before on period #2 by one unit interval.

In an example where adaptation is applied during on period #2 in Figure 14, the end position of on period #2 is maintained at the same position as when adaptation is not applied.

In Alt.1 of the example in which adaptation is applied in Figure 14, the start and end positions of on period #3 are maintained at the same positions as in the example in which adaptation is not applied. Maintaining the start position of on period #3 at the same position as in the example in which adaptation is not applied may be equivalent to maintaining the length of the sleep period between on period #2 and on period #3.

In Alt.2, an example of adaptation in Figure 14, the start and end positions of on periods after on period #3 are each shifted forward by one unit interval compared to when adaptation is not applied, similar to the shift in the start position of on period #2. In other words, in this case, the sleep period between on period #2 and on period #3 is shortened by one unit interval.

In Alt.3 of Figure 14, an example in which adaptation is applied, adaptation is applied to each on-period from on-period #3 onwards. In this example, the start positions of on-periods from on-period #3 onwards are shifted forward by one unit interval relative to the case in which adaptation is not applied, similar to the shift in the start position of on-period #2. Meanwhile, the end positions of on-periods from on-period #3 onwards are maintained at the same positions as when adaptation is not applied, similar to the end positions of on-period #2. In other words, in this case, the period when adaptation is applied is maintained in each CDRX cycle. Here, a period when adaptation is applied may be a period including an on-period having three unit intervals and a sleep period having a length of two unit intervals.

As shown in Alt.3 of the example in Figure 14 where adaptation is applied, the CDRX cycles from on period #2 onwards each include an on period having three unit intervals and a sleep period having a length of two unit intervals.

As described above, in Proposal 2-2, the terminal shifts either the start or end position of the on-period to which adaptation is applied in the time direction, while maintaining the other position at the same position as when adaptation is not applied. This avoids a discrepancy between the arrival timing of the signal from the base station and the reception timing (reception period) of the terminal, allowing the terminal to perform reception processing appropriately. Furthermore, in Proposal 2-2, only either the start or end position of the on-period to which adaptation is applied is shifted in the time direction, making control easy. Furthermore, in Proposal 2-2, the length of some on-periods is changed while the length of the remaining on-periods is not changed, thereby suppressing increases in power consumption in the terminal.

As explained above, in Proposal 2, as an example of the application of adaptation, adaptation of the position of the CDRX on duration is notified or specified. In this case, in Proposal 2, the terminal moves the on period to an appropriate timing (or appropriate period), extends the on period, or shortens the on period. This makes it possible to avoid a discrepancy between the arrival timing of the signal from the base station and the reception timing (reception period) of the terminal, and enables appropriate reception processing to be performed at the terminal.

In the above-mentioned proposal 2 (proposal 2-1 and proposal 2-2), at least one of the amount of shift by which the position of the on-period to which adaptation is applied and the direction in which the position of the on-period to which adaptation is applied is shifted may be specified or notified. The position of the on-period may be only the start position of the on-period, only the end position, or both the start and end positions. For example, one of the amount of shift by which the start position of the on-period is shifted and the direction in which the start position of the on-period is shifted may be notified, and the other may be specified. For example, the amount of shift by which the start position of the on-period is shifted may be specified as a fixed amount, and information indicating whether the direction of shift is forward or backward in the time direction may be notified. Alternatively, for example, one of the amount of shift by which the end position of the on-period is shifted and the direction in which the end position of the on-period is shifted may be notified, and the other may be specified. For example, the amount of shift by which the end position of the on-period is shifted may be specified as a fixed amount, and information indicating whether the direction of shift is forward or backward in the time direction may be notified.

The shift amount may be indicated in specific time units such as SFN, slot, and symbol, or may be indicated by absolute values of time widths such as ms and μs, or may be indicated by a combination of these. The position (start position and/or end position) of the on-period to which adaptation is applied may be indicated in specific time units such as SFN, slot, and symbol, or may be indicated by absolute values of time widths such as ms and μs, or may be indicated by a combination of these.

Furthermore, in the above-mentioned Proposal 2 (Proposal 2-1 and Proposal 2-2), information indicating the position (start position and/or end position) of the on-period to which adaptation is applied may be specified or notified. The start position of the on-period may be indicated in specific time units such as SFN, slot, and symbol, or may be indicated as an overall position, or may be indicated as a relative position from a certain reference position. The certain reference position may be, for example, the immediately preceding on-period.

In addition, instead of notifying information indicating the start and end positions of the on-period to which adaptation is applied, one of the start and end positions of the on-period to which adaptation is applied and the length of the on-period may be notified.

<Proposal 3>
In Proposal 3, the adaptation of the duration of CDRX on duration may be notified or specified.

In Proposal 3, the terminal changes the duration of on-period #X during an on-period to which adaptation is applied (e.g., on-period #X). The change in duration may be at least one of extending the duration and shortening the duration. Below, an example of extending the duration of on-period #X is shown, but the present disclosure is not limited to this. For example, the duration of on-period #X may be shortened.

In Proposal 3, one of the following Alts may be applied to the start position of the on-period (e.g., on-period #Y) that follows the on-period (e.g., on-period #X) to which adaptation is applied. The Alts shown below may be applied not only when the on-period #X is extended, but also when the on-period #X is shortened.

(Alt.1)
The start position of on-period #Y when adaptation is not applied is maintained. In this case, the length of the sleep period between on-period #X and on-period #Y is shortened. Here, the length by which the sleep period is shortened may be the same as the length by which on-period #X is extended.

Furthermore, the length of on period #Y may be extended in the same manner as on period #X, or may be maintained at the length that would be obtained if no adaptation were applied.

(Alt.2)
The start position of the on period #Y may be shifted in accordance with an increase or decrease in the length of the on period #X. In this case, the amount by which the start position of the on period #Y is shifted may be the same as the length by which the on period #X is extended.

Furthermore, the length of on period #Y may be extended in the same manner as on period #X, or may be maintained at the length that would be obtained if no adaptation were applied.

Figure 15 is a diagram showing a fourth example of the application of adaptation. Figure 15 shows an example in which adaptation is not applied ("No Adaptation") and an example in which adaptation is applied during on-period #2 ("With Adaptation"). In the example in which adaptation is applied during on-period #2, two examples, Alt.1 and Alt.2, are shown separately. Note that the horizontal axis in Figure 15 represents the time axis.

Each example in Figure 15, similar to Figures 7 to 11, shows an example in which one cycle (CDRX cycle) when adaptation is not applied includes an on period having two unit intervals and a sleep period having a length of three unit intervals.

In an example in which adaptation is applied to on period #2 in Figure 15, the duration of on period #2 is extended by one unit interval. Note that the amount of extension is not limited to this. Note that extending the duration of on period #2 by one unit interval may be equivalent to shifting the end position of on period #2 back by one unit interval.

In Alt.1 of Figure 15, an example in which adaptation is applied, the start positions of on periods after on period #3 are maintained at the same positions as in the example in which adaptation is not applied. Note that maintaining the start position of on period #3 at the same position as in the example in which adaptation is not applied may be equivalent to shortening the length of the sleep period between on period #2 and on period #3.

In addition, in Alt.1, an example in which the adaptation of Figure 15 is applied, the duration of on periods from on period #3 onwards may be extended, similar to on period #2.

In Alt.2, an example of adaptation in Figure 15, the start and end positions of on periods from on period #3 onwards are sequentially shifted back in accordance with the extension of the length of on period #2. In other words, in this case, the length of each sleep period is maintained at the same length as when adaptation is not applied.

In addition, in Alt.2, an example in which the adaptation of Figure 15 is applied, the duration of on periods from on period #3 onwards may be extended, similar to on period #2.

As explained above, in Proposal 3, the adaptation of the CDRX on duration may be notified or specified. In this case, in Proposal 3, the terminal extends or shortens the on period at an appropriate timing (or for an appropriate period). This avoids a discrepancy between the arrival timing of the signal from the base station and the reception timing (reception period) of the terminal, allowing the terminal to perform appropriate reception processing.

In Proposal 3, the length by which the on-period is extended may be specified or notified.

In addition, although Proposal 3 shows an example of extending the length of the on-period, the length of the on-period may also be shortened. When the length of the on-period is shortened, the length of the shortening may be specified or notified.

In addition, in Proposal 3, adaptation may or may not be applied to the on-period (on-period #Y) following the on-period (on-period #X) to which adaptation is applied.

<Proposal 4>
In Proposal 4, the adaptation of the CDRX cycle length may be signaled or specified.

Figure 16 is a diagram showing a fifth example of the application of adaptation. Figure 16 shows an example in which adaptation is not applied ("No Adaptation") and an example in which adaptation is applied ("With Adaptation"). In the example in which adaptation is applied, two examples are shown separately: Example 1 in which adaptation is applied during on-period #1, and Example 2 in which adaptation is applied during on-period #2. Note that the horizontal axis in Figure 16 represents the time axis.

Each example in Figure 16, similar to Figures 7 to 11, shows an example in which one cycle (CDRX cycle) when adaptation is not applied includes an on period having two unit intervals and a sleep period having a length of three unit intervals.

As shown in Figure 16, examples 1 and 2 in which adaptation is applied have in common the fact that the application of adaptation changes the CDRX cycle to one that includes an on-period having two unit intervals and a sleep period having the length of the two unit intervals. However, examples 1 and 2 in which adaptation is applied differ in the notification of adaptation and the timing of application of adaptation. For example, the on-period to which adaptation is applied differs between examples 1 and 2.

In Example 1 of Figure 16, adaptation is applied to on-period #1, and the length of the sleep period following on-period #1 is shortened by one unit interval. Note that the amount of shortening is not limited to this.

In Example 2 of Figure 16, adaptation is applied to on-period #2, and the length of the sleep period preceding on-period #2 is shortened by one unit interval. Note that the amount of shortening is not limited to this.

Note that, in Examples 1 and 2 of Figure 16, examples are shown in which the length of the CDRX cycle including an on-period to which adaptation is not applied (e.g., on-period #3) is changed, but the length of the CDRX cycle for an on-period to which adaptation is not applied may be the same as in the example to which adaptation is not applied ("No Adaptation").

As explained above, in Proposal 4, adaptation of the length of the CDRX cycle is notified or specified. In this case, in Proposal 4, the terminal adjusts the length of the CDRX cycle so that the on period is positioned at an appropriate timing (or appropriate period). For example, adjusting the length of the CDRX cycle includes at least one of extending and shortening the length of the on period and extending and shortening the length of the sleep period. This makes it possible to avoid a discrepancy between the arrival timing of the signal from the base station and the reception timing (reception period) of the terminal, allowing the terminal to perform appropriate reception processing.

The above-mentioned proposals may be used in combination. The proposals to be combined may be fixed, or the combination of proposals may be changed. The content of the proposal combination may be specified or notified.

Furthermore, the above-mentioned suggestions may be switched between. The suggestions to be switched may be specified or notified.

In addition, a UE capability indicating whether or not one of the above proposals is supported may be defined or notified.In addition, a UE capability indicating whether or not more than one of the above proposals is supported may be defined or notified.

The unit of time in each of the above examples may be ms, or other units such as s, μs, or ns. The unit of time may also be a specific time unit such as SFN, slot, or symbol.

Note that on duration (or on period) may refer to the time when the on duration timer is running.

In the above-described embodiments, the method of determining whether to apply adaptation, the method of determining the on-duration to which adaptation is applied, the method of determining the elements to be adapted (e.g., parameters to be adjusted by adaptation), and the method of adjusting those elements (e.g., the method of determining the amount by which the start position is shifted) are not particularly limited. For example, a base station may determine at least one of whether to apply adaptation, the on-duration to which adaptation is applied, the elements to be adapted, and the method of adjusting those elements based on specific criteria (e.g., criteria related to transmission and reception timing, reception quality, traffic volume, the reliability required by the traffic, etc.). Alternatively, a terminal may determine at least one of whether to apply adaptation, the on-duration to which adaptation is applied, the elements to be adapted, and the method of adjusting those elements based on specific criteria. Furthermore, at least one of whether to apply adaptation, the on-duration to which adaptation is applied, the elements to be adapted, and the method of adjusting those elements may be specified in advance.

For example, the base station may determine to apply adaptation when the timing of XR traffic is not included in the CDRX on duration interval, and may determine not to apply adaptation when the timing of XR traffic is included in the CDRX on duration interval.

In the above-described embodiment, an example was shown in which the signal transmitted from the base station and received by the terminal during the on period (the signal received intermittently) is an XR traffic signal, but the present disclosure is not limited to this. The signal received intermittently by the terminal may be a signal different from the XR traffic signal.

Furthermore, in the above-described embodiment, the CDRX function is cited as an intermittent reception method, but the present disclosure is not limited to this. Each proposal in the above-described embodiment may be used in a reception method other than the CDRX function.

Furthermore, while the above-described embodiments have shown examples in which a terminal intermittently receives a signal transmitted from a base station, the present disclosure is not limited to this. For example, the proposals of the above-described embodiments may also be used when a base station intermittently receives a signal transmitted from a terminal. Alternatively, the proposals of the above-described embodiments may also be used when, in sidelink communications, a signal transmitted from one terminal is intermittently received by the other terminal.

In the above-described embodiments, active may be interpreted as enabled, activated, activated, etc., and inactive may be interpreted as disabled, deactivated, sleep, etc. "Signal" may be interpreted as information, control information, notification, etc.

(Device configuration)
Next, a description will be given of an example of the functional configuration of the base station 100 and the terminal 200 that execute the processes and operations described above. The base station 100 and the terminal 200 may have the functions to implement the above-described embodiments. However, the base station 100 and the terminal 200 may each have only a part of the functions of the embodiments.

<Base station>
17 is a block diagram showing an example of a configuration of a base station 100 according to an embodiment of the present disclosure. The base station includes, for example, a transmitting unit 101, a receiving unit 102, and a control unit 103. The base station 100 communicates with a terminal 200 (see FIG. 18 ) wirelessly. The transmitting unit 101 and the receiving unit 102 may be collectively referred to as a communication unit.

The transmitting unit 101 transmits a DL signal to the terminal 200. For example, the transmitting unit 101 transmits the DL signal under the control of the control unit 103. For example, the DL signal may include information indicating scheduling regarding signal transmission by the terminal 200 (e.g., an UL grant), control information of higher layers, etc.

For example, the transmitting unit 101 transmits various control signals (such as RRC layer control signals), reference signals, data signals, etc. as DL signals to the terminal 200. The transmitting unit 101 transmits various signals, channels, setting information, control information, etc. described in the above embodiments as DL signals to the terminal 200.

For example, the transmitting unit 101 transmits information regarding adaptation generated by the control unit 103 to the terminal 200. In addition, the transmitting unit 101 transmits a data signal (for example, an XR traffic signal) generated by the control unit 103 to the terminal 200.

The receiving unit 102 receives an UL signal transmitted from the terminal 200. For example, the receiving unit 102 receives the UL signal under the control of the control unit 103.

For example, the receiving unit 102 receives, as UL signals, signals including terminal capability information (e.g., UE capability) of the terminal 200, various control signals, reference signals, data signals, etc. from the terminal 200.

The control unit 103 controls the overall (communication) operation of the base station 100, including the transmission processing in the transmission unit 101 and the reception processing in the reception unit 102.

For example, the control unit 103 acquires information such as data and control information from the upper layer and outputs it to the transmitting unit 101. The control unit 103 also outputs data, control information, etc. received from the receiving unit 102 to the upper layer.

For example, the control unit 103 allocates resources to be used for transmitting and receiving DL signals and/or resources to be used for transmitting and receiving UL signals based on signals (e.g., data and control information, etc.) received from the terminal 200 and/or data and control information, etc. obtained from a higher layer. Information regarding the allocated resources may be included in control information transmitted to the terminal 200.

The control unit 103 performs operations other than the transmission and reception described in the above embodiment (note that these operations may also be performed by the transmission unit 101 and/or the reception unit 102).

For example, the control unit 103 determines whether adaptation is applicable and, if so, the on-period to which adaptation is to be applied. Based on the determination result, the control unit 103 generates information regarding adaptation to be transmitted to the terminal 200. Also, for example, the control unit 103 determines the elements to be adapted (for example, parameters to be adjusted (at least one of the start position, end position, and length of the on-period)) and determines the amount by which the determined parameters are to be adjusted. The control unit 103 may generate information including the determined content as control information.

<Device>
18 is a block diagram showing an example of a configuration of a terminal 200 according to an embodiment of the present disclosure. The terminal 200 includes, for example, a receiving unit 201, a transmitting unit 202, and a control unit 203. The terminal 200 communicates with, for example, the base station 100 (see FIG. 17 ) wirelessly. Note that the receiving unit 201 and the transmitting unit 202 may be collectively referred to as a communication unit.

The receiving unit 201 receives a DL signal transmitted from the base station 100. For example, the receiving unit 201 receives the DL signal under the control of the control unit 203.

For example, the receiving unit 201 receives various control signals, reference signals, data signals, etc. as DL signals from the base station 100. The receiving unit 201 receives various signals, channels, setting information, control information, etc. described in the above embodiments as DL signals from the base station 100.

For example, the receiving unit 201 receives a signal from the base station 100 during the on period. The received signal may include information about adaptation. The received signal may also include an XR traffic signal.

The transmitting unit 202 transmits the UL signal to the base station 100. For example, the transmitting unit 202 transmits the UL signal under the control of the control unit 203.

For example, the transmitting unit 202 transmits, as an UL signal, a signal containing information regarding the processing capability of the terminal 200, various control signals, reference signals, data signals, etc. to the base station 100.

The control unit 203 controls the overall (communication) operation of the terminal 200, including the receiving processing in the receiving unit 201 and the transmitting processing in the transmitting unit 202.

For example, the control unit 203 acquires information such as data and control information from the upper layer and outputs it to the transmitting unit 202. The control unit 203 also outputs, for example, data and control information received from the receiving unit 201 to the upper layer.

For example, the control unit 203 applies adaptation during the on-period based on the received information regarding adaptation and/or predefined information. The on-period to which adaptation is applied may be determined based on the received information regarding adaptation, or may be determined based on predefined conditions. Also, for example, the control unit 103 determines the elements to be adapted (e.g., parameters to be adjusted (at least one of the start position, end position, and length of the on-period)) based on the predefined conditions and/or the received information, and determines the amount by which the determined parameters are to be adjusted. The control unit 103 applies adaptation based on the determined content.

The control unit 203 performs operations other than the transmission and reception described in the above embodiment (note that these operations may also be performed by the receiving unit 201 and/or the transmitting unit 202).

The present disclosure has been described above. Please note that the division of items in the above description is not essential to the present disclosure, and items described in two or more items may be used in combination as needed, and items described in one item may also apply to items described in another item (unless they contradict each other).

<Hardware configuration, etc.>
The block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of hardware and/or software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (e.g., wired, wireless, etc.) and these multiple devices. The functional block may also be realized by combining software with the single device or multiple devices.

Functions include, but are not limited to, judgment, determination, assessment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, regard, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission functions is called a transmitting unit or transmitter. As mentioned above, there are no particular limitations on how these functions are implemented.

For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 19 is a diagram showing an example of the hardware configuration of a base station 100 and a terminal 200 in one embodiment of the present disclosure. The above-mentioned base station 100 and terminal 200 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

In the following description, the term "apparatus" can be interpreted as circuit, device, unit, etc. The hardware configuration of the base station 100 and terminal 200 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.

Each function in the base station 100 and the terminal 200 is realized by loading specified software (programs) onto hardware such as the processor 1001 and memory 1002, causing the processor 1001 to perform calculations, control communication by the communication device 1004, and control at least one of reading and writing data in the memory 1002 and storage 1003.

The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control unit, an arithmetic unit, registers, etc. For example, the above-mentioned control units 103, 203, etc. may be realized by the processor 1001.

The processor 1001 also reads programs (program code), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes in accordance with these. The program used is a program that causes a computer to execute at least some of the operations described in the above-mentioned embodiments. For example, the control unit 103 of the base station 100 and the control unit 203 of the terminal 200 may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and similar implementations may be made for other functional blocks. While the above-mentioned various processes have been described as being executed by one processor 1001, they may also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The programs may also be transmitted from a network via telecommunications lines.

Memory 1002 is a computer-readable recording medium and may be composed of, for example, at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. Memory 1002 may also be referred to as a register, cache, main memory (primary storage device), etc. Memory 1002 can store executable programs (program code), software modules, etc. for implementing a wireless communication method relating to one embodiment of the present disclosure.

Storage 1003 is a computer-readable recording medium and may be composed of, for example, at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc. Storage 1003 may also be referred to as an auxiliary storage device. The above-mentioned storage medium may be, for example, a database, a server, or other suitable medium including at least one of memory 1002 and storage 1003.

The communication device 1004 is hardware (transmission/reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, network controller, network card, or communication module. The communication device 1004 may be configured to include a high-frequency switch, duplexer, filter, frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmitter 101, receiver 102, receiver 201, and transmitter 202 may be realized by the communication device 1004. The communication device 1004 may be implemented with the transmitter and receiver physically or logically separated.

The input device 1005 is an input device (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, speaker, LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one structure (e.g., a touch panel).

Furthermore, each device such as the processor 1001 and memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

Furthermore, the base station 100 and the terminal 200 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by this hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

(Summary of the embodiment)
According to an embodiment of the present disclosure, there is provided a terminal including: a receiving unit that receives information regarding adjustment of a cycle having an active period in which a signal is received and a sleep period in which the signal is not received; and a control unit that adjusts the active period based on the information and controls reception of the signal during the adjusted active period.

With the above configuration, based on the information regarding adjustment, it is possible to avoid a discrepancy between the timing of the signal arrival from the base station and the timing of the reception (reception period) at the terminal, and appropriate reception processing can be performed at the terminal.

In this terminal, the receiving unit receives, during a first active period, the information regarding adjustment of a cycle that includes a second active period that follows the first active period.

With the above configuration, based on the information regarding adjustment, it is possible to avoid a discrepancy between the timing of the signal arrival from the base station and the timing of the reception (reception period) at the terminal, and appropriate reception processing can be performed at the terminal.

In this terminal, the receiving unit receives, during the sleep period, the information contained in the downlink control information that can be received during the sleep period.

With the above configuration, control is performed based on information that can be received during the sleep period, allowing for quick changes to the reception process.

In this terminal, the control unit adjusts the third active period after a specific time has elapsed since receiving the information.

The above configuration allows information regarding adjustments to be notified in advance, enabling flexible notifications.

In this terminal, the control unit adjusts the multiple active periods.

With the above configuration, information for multiple active periods can be notified together, thereby reducing the number of times information is notified and suppressing the increase in power consumption required to receive information.

According to an embodiment of the present disclosure, a base station is provided that includes a control unit that generates information regarding adjustment of a cycle having an active period during which a terminal receives a signal and a sleep period during which the terminal does not receive the signal, and a transmission unit that transmits the information.

With the above configuration, based on the information regarding adjustment, it is possible to avoid a discrepancy between the timing of the signal arrival from the base station and the timing of the reception (reception period) at the terminal, and appropriate reception processing can be performed at the terminal.

According to an embodiment of the present disclosure, a terminal is provided that includes a control unit that adjusts an active period in a cycle having an active period in which a signal is received and a sleep period in which the signal is not received, and a receiving unit that receives the signal during the adjusted active period.

The above configuration avoids discrepancies between the timing of the signal arrival from the base station and the timing of the terminal's reception (reception period), allowing the terminal to perform appropriate reception processing.

In this terminal, the control unit shifts the first active period of the multiple active periods that are periodically set in the time direction.

The above configuration allows for a shift in the time direction to avoid a discrepancy between the arrival timing of the signal from the base station and the reception timing (reception period) at the terminal, thereby suppressing an increase in power consumption at the terminal.

In this terminal, the control unit adjusts the time position of the second active period following the first active period to the same time position as if the first active period were not adjusted.

The above configuration does not change the time position, thereby avoiding complicated control.

In this terminal, the control unit adjusts the time interval of the sleep period following the first active period to the same time interval as if no adjustment were made.

The above configuration does not change the time interval, thereby avoiding complicated control.

In this terminal, the control unit changes the length of a first active period among the plurality of active periods that are periodically set and/or a first sleep period that follows the first active period.

With the above configuration, by changing the length of some active or sleep periods, it is possible to avoid a discrepancy between the timing of the arrival of a signal from the base station and the timing of its reception by the terminal (reception period), thereby suppressing an increase in power consumption in the terminal.

According to an embodiment of the present disclosure, a base station is provided that includes a control unit that generates a signal to be received during an active period after a cycle is adjusted, the active period having an active period during which a terminal receives a signal and a sleep period during which the terminal does not receive the signal, and a transmission unit that transmits the signal.

The above configuration avoids discrepancies between the timing of the signal arrival from the base station and the timing of the terminal's reception (reception period), allowing the terminal to perform appropriate reception processing.

(Supplementary explanation of the embodiment)
Although the embodiments of the present disclosure have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, alterations, alternatives, and substitutions. While specific numerical examples have been used to facilitate understanding of the invention, unless otherwise specified, these numerical values are merely examples, and any appropriate values may be used. The division of items in the above description is not essential to the present disclosure; matters described in two or more items may be used in combination as needed, and matters described in one item may apply to matters described in another item (unless inconsistent). The boundaries between functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries between physical components. The operations of multiple functional units may be performed by a single physical component, or the operations of a single functional unit may be performed by multiple physical components. The order of processing steps described in the embodiments may be reversed as long as there is no contradiction. For convenience of processing description, the base station 100 and terminal 200 have been described using functional block diagrams. However, such devices may be implemented using hardware, software, or a combination thereof. The software operated by the processor of the base station 100 according to an embodiment of the present disclosure and the software operated by the processor of the terminal 200 according to an embodiment of the present disclosure may each be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.

<Information notification, signaling>
The notification of information is not limited to the aspects/embodiments described in the present disclosure and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB))), other signals, or a combination thereof. Furthermore, the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

<Applicable systems>
Each aspect/embodiment described in the present disclosure may be implemented using any of the following standards: LTE (Long Term Evolution), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal number)), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.17 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (Wi-Fi (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (Wi-Fi (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), IEEE 802.34 ( The present invention may be applied to at least one of systems using 802.20, UWB (Ultra-Wide Band), Bluetooth (registered trademark), or other suitable systems, and next-generation systems that are extended, modified, created, or defined based on these systems. The present invention may also be applied to a combination of multiple systems (e.g., a combination of LTE and/or LTE-A with 5G).

<Processing procedures, etc.>
The order of the procedures, sequences, flowcharts, etc. of each aspect/embodiment described in this disclosure may be changed unless it is consistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the particular order presented.

<Base station operation>
In the present disclosure, a specific operation described as being performed by a base station may be performed by its upper node in some cases. In a network consisting of one or more network nodes having a base station, it is clear that various operations performed for communication with a terminal may be performed by at least one of the base station and another network node other than the base station (for example, an MME or an S-GW, etc., but are not limited to these). Although the above example illustrates a case where there is one other network node other than the base station, a combination of multiple other network nodes (for example, an MME and an S-GW) may also be used.

<Input/output direction>
Information, etc. (see the section on information and signals) can be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). Information may be input or output via multiple network nodes.

<Handling of input and output information>
Input and output information may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information may be overwritten, updated, or added to. Output information may be deleted. Input information may be transmitted to another device.

<Judgment method>
The determination may be made based on a value represented by one bit (0 or 1), a Boolean value (true or false), or a numerical comparison (e.g., comparison with a predetermined value).

<Variations in form, etc.>
The aspects/embodiments described in this disclosure may be used alone, in combination, or switched depending on the implementation. Notification of predetermined information (e.g., notification that "X is true") is not limited to explicit notification, but may be implicit (e.g., not notifying the predetermined information).

Although the present disclosure has been described in detail above, it will be clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the present disclosure.

<Software>
Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

Software, instructions, information, etc. may also be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and/or wireless technologies (such as infrared, microwave), these wired and/or wireless technologies are included within the definition of transmission media.

<Information, Signals>
The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

Note that terms explained in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Furthermore, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.

<Systems, Networks>
As used in this disclosure, the terms "system" and "network" are used interchangeably.

<Parameter and channel names>
Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by an index.

The names used for the above-described parameters are not intended to be limiting in any way. Furthermore, the mathematical formulas, etc. using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

<Base station>
In the present disclosure, terms such as "base station (BS),""radio base station,""fixedstation,""NodeB,""eNodeB(eNB),""gNodeB(gNB),""accesspoint,""transmissionpoint,""receptionpoint,""transmission/receptionpoint,""cell,""sector,""cellgroup,""carrier," and "component carrier" may be used interchangeably. A base station may also be referred to by terms such as a macrocell, a small cell, a femtocell, and a picocell.

A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, and each smaller area can also be provided with communication services by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)). The terms "cell" or "sector" refer to part or all of the coverage area of a base station and/or base station subsystem that provides communication services within this coverage area.

In this disclosure, a base station sending information to a terminal may be interpreted as the base station instructing the terminal to control or operate based on the information.

<Mobile Station>
In this disclosure, the terms "Mobile Station (MS),""userterminal,""User Equipment (UE),""terminal," and the like may be used interchangeably.

A mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

<Base station/mobile station>
At least one of the base station and the mobile station may be referred to as a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, etc. The mobile object refers to a movable object, and may move at any speed. Naturally, this also includes cases where the mobile object is stationary. Examples of the mobile object include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones (registered trademark), multicopters, quadcopters, balloons, and objects mounted thereon. The mobile object may also be a mobile object that moves autonomously based on an operational command. It may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

Furthermore, the base station in the present disclosure may be read as a user terminal. For example, each aspect/embodiment of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)). In this case, the terminal 200 may be configured to have the functions possessed by the base station 100 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to communication between terminals (for example, "side"). For example, terms such as uplink channel and downlink channel may be read as side channel.

Similarly, the user terminal in this disclosure may be interpreted as a base station. In this case, the base station 100 may be configured to have the functions possessed by the above-mentioned terminal 200.

Figure 20 shows an example configuration of vehicle 2001. As shown in Figure 20, vehicle 2001 comprises a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013. Each aspect/embodiment described in this disclosure may be applied to a communication device installed in vehicle 2001, for example, may be applied to communication module 2013.

The drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels and rear wheels based on the operation of the steering wheel operated by the user.

The electronic control unit 2010 is composed of a microprocessor 2031, memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided in the vehicle 2001. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

Signals from the various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the motor current, a front and rear wheel rotation speed signal obtained by a rotation speed sensor 2022, a front and rear wheel air pressure signal obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a vehicle speed sensor 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.

The information service unit 2012 is composed of various devices, such as a car navigation system, audio system, speakers, television, and radio, for providing (outputting) various information such as driving information, traffic information, and entertainment information, as well as one or more ECUs that control these devices. The information service unit 2012 uses information obtained from external devices via the communication module 2013, etc., to provide various multimedia information and multimedia services to the occupants of the vehicle 2001.

The information service unit 2012 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.

The driving assistance system unit 2030 is composed of various devices that provide functions to prevent accidents and reduce the driver's driving burden, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS, etc.), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. The driving assistance system unit 2030 also transmits and receives various information via the communication module 2013 to realize driving assistance functions or autonomous driving functions.

The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port. For example, the communication module 2013 transmits and receives data via the communication port 2033 between the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 2029 provided on the vehicle 2001.

The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 2013 may be located either inside or outside the electronic control unit 2010. The external device may be, for example, a base station, a mobile station, etc.

The communication module 2013 may transmit at least one of the signals from the various sensors 2021-2029 described above input to the electronic control unit 2010, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 2012 to an external device via wireless communication. The electronic control unit 2010, the various sensors 2021-2029, the information service unit 2012, etc. may be referred to as input units that accept input. For example, the PUSH transmitted by the communication module 2013 may include information based on the above input.

The communication module 2013 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from external devices and displays it on the information service unit 2012 provided in the vehicle 2001. The information service unit 2012 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH (or data/information decoded from the PDSCH) received by the communication module 2013). The communication module 2013 also stores the various information received from external devices in memory 2032 that can be used by the microprocessor 2031. Based on the information stored in memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021-2029, etc. provided in the vehicle 2001.

<Terminology and interpretation>
As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of actions. "Determining" and "determining" may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching a table, database, or other data structure), ascertaining, and the like. "Determining" and "determining" may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and the like, all of which are considered to be "determining.""Determining" and "determining" may also include resolving, selecting, choosing, establishing, comparing, and the like, all of which are considered to be "determining." In other words, "judgment" and "decision" can include regarding some action as having been "judged" or "decided." Also, "judgment (decision)" can be interpreted as "assuming,""expecting,""considering," etc.

The terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access." As used in this disclosure, two elements may be considered to be "connected" or "coupled" to each other using one or more wires, cables, and/or printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.

<Reference signal>
The reference signal may be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.

<The meaning of "based on">
As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

<"First" and "Second">
As used in this disclosure, any reference to an element using a designation such as "first,""second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

<Means>
The "means" in the configuration of each of the above devices may be replaced with "part,""circuit,""device," etc.

<Open format>
When the terms "include,""including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

<Time units such as TTI, frequency units such as RB, and radio frame configuration>
A radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

Numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel. Numerology may indicate, for example, at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering operations performed by the transceiver in the frequency domain, and specific windowing operations performed by the transceiver in the time domain.

A slot may consist of one or more symbols in the time domain (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol). A slot may also be a time unit based on numerology.

A slot may include multiple minislots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.

Radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals. Other names may also be used for radio frame, subframe, slot, minislot, and symbol.

For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. In other words, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station schedules each user terminal by allocating radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) in TTI units. Note that the definition of TTI is not limited to this.

A TTI may be a transmission time unit for a channel-coded data packet (transport block), code block, code word, etc., or may be a processing unit for scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, code block, code word, etc. is actually mapped may be shorter than the TTI.

Note that when one slot or one minislot is referred to as a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the smallest time unit for scheduling. Furthermore, the number of slots (minislots) constituting the smallest time unit for scheduling may be controlled.

A TTI with a time length of 1 ms may be referred to as a regular TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be referred to as a shortened TTI, short TTI, partial TTI (partial or fractional TTI), shortened subframe, short subframe, minislot, subslot, slot, etc.

Note that a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than that of a long TTI and greater than or equal to 1 ms.

A resource block (RB) is a resource allocation unit in the time and frequency domains, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may also be determined based on numerology.

Furthermore, the time domain of an RB may include one or more symbols and may be one slot, one minislot, one subframe, or one TTI in length. One TTI, one subframe, etc. may each consist of one or more resource blocks.

In addition, one or more RBs may also be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

A resource block may also be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

A Bandwidth Part (BWP) (which may also be referred to as a partial bandwidth) may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a Common Reference Point of the carrier. PRBs may be defined in a BWP and numbered within that BWP.

BWPs may include a BWP for the UL (UL BWP) and a BWP for the DL (DL BWP). One or more BWPs may be configured for a UE within one carrier.

At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

The above-described structures of radio frames, subframes, slots, minislots, and symbols are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, as well as the number of symbols in a TTI, symbol length, and cyclic prefix (CP) length can be varied in various ways.

<Maximum transmission power>
The "maximum transmit power" in this disclosure may mean the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

＜Article＞
In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

"Different"
In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

The present disclosure is useful in wireless communication systems.

10 Wireless communication system 20 NG-RAN
100 base station (gNB)
200 Terminal (UE)
101, 202 Transmitting unit 102, 201 Receiving unit 103, 203 Control unit 1001 Processor 1002 Memory 1003 Storage 1004 Communication device 1005 Input device 1006 Output device 1007 Bus

Claims (6)

a control unit that adjusts an active period in a cycle having an active period in which a signal is received and a sleep period in which the signal is not received;
a receiving unit that receives the signal during the adjusted active period;
Equipped with
the control unit shifts a first active period in a time direction among the plurality of active periods that are periodically provided;
the control unit adjusts the time position of a second active period following the first active period to the same time position as when the first active period is not adjusted.
Terminal. a control unit that adjusts an active period in a cycle having an active period in which a signal is received and a sleep period in which the signal is not received;
a receiving unit that receives the signal during the adjusted active period;
Equipped with
the control unit shifts a first active period in a time direction among the plurality of active periods that are periodically provided;
the control unit adjusts the time interval of the sleep period following the first active period to the same time interval as when no adjustment is made.
Terminal . the control unit changes a length of a first active period among the plurality of active periods that are periodically provided and/or a length of a first sleep period that follows the first active period;
The terminal according to claim 1 . the control unit shifts the start position of the first active period and shifts the end position of the active period based on a specific shift amount;
The terminal according to claim 1 . the control unit shifts the start position of the first active period based on a specific shift amount, and does not shift the end position of the active period;
The terminal according to claim 1 . the control unit adjusts the active period based on a rule without receiving an instruction from another device.
The terminal according to claim 1 .