JP7121782B2 - Base station, communication method, integrated circuit, and communication system - Google Patents

Description

The present technology relates to base stations, communication methods, integrated circuits, and communication systems.

Congestion control functions are an essential requirement for equipment operating in the 5.9 GHz intelligent transport system (ITS) band in Europe, and the 3rd Generation Partnership Project (3GPP) is particularly focused on vehicle to vehicle communication (V2V). ), we are also trying to specify the congestion control function.

One non-limiting exemplary embodiment provides a wireless communication method, apparatus, and system for congestion control.

In one general aspect, at a first node, measuring one or more channel busy ratios for a transceiver operable to transmit and/or receive wireless signals and a channel resource pool of wireless signals; and circuitry operable to perform congestion control on the channel resource pool based on the measured channel busy rate.

In another general aspect, at a first node operable to transmit and/or receive wireless signals, a method is provided, the method comprises determining one or more channel busy conditions for a channel resource pool of wireless signals. and performing congestion control on the channel resource pool based on the measured channel busy rate.

In another general aspect, at a first node, a processor; and performing congestion control on the channel resource pool based on the busy rate.

Note that the general or specific embodiments may be implemented as systems, methods, integrated circuits, computer programs, storage media, or any selective combination thereof.

Further benefits and advantages of the disclosed embodiments will become apparent from the specification and drawings. Benefits and/or advantages may be obtained individually by various embodiments and features of the specification and drawings, which may be used to obtain one or more of such benefits and/or advantages. Not all need to be provided.

1 schematically illustrates an example wireless communication scenario involving a User Equipment (UE) and a base station such as an eNodeB (eNB); FIG. 1 schematically illustrates a block diagram of a wireless communication device in accordance with embodiments of the present disclosure; FIG. Fig. 2 schematically shows a number of subframes and resource pools of radio signals within the subframes; FIG. 4 is a diagram schematically showing an example for explaining the measurement operation of the wireless communication device according to the embodiment of the present disclosure; FIG. 4 schematically illustrates an example for explaining another measurement operation of a wireless communication device according to another embodiment of the present disclosure; FIG. 4 schematically illustrates an example for explaining another measurement operation of a wireless communication device according to another embodiment of the present disclosure; FIG. 4 schematically illustrates an example for explaining another measurement operation of a wireless communication device according to another embodiment of the present disclosure; Fig. 2 schematically illustrates different congestion control actions for different congestion situations; Fig. 2 schematically illustrates different congestion control actions for different congestion situations; Fig. 2 schematically illustrates different congestion control actions for different congestion situations; Fig. 2 schematically illustrates different congestion control actions for different congestion situations; FIG. 4 is a diagram schematically illustrating an example for explaining notification operation of a wireless communication device according to an embodiment of the present disclosure; Fig. 3 schematically shows a flow chart of a wireless communication method according to an embodiment of the present disclosure; Fig. 3 schematically shows a flow chart of a wireless communication method according to another embodiment of the present disclosure; Fig. 3 schematically shows a flow chart of a wireless communication method according to another embodiment of the present disclosure; 1 schematically illustrates a block diagram of a wireless communication system in accordance with embodiments of the present disclosure; FIG.

Embodiments will now be described with reference to FIGS. 3-6 with respect to communication methods, apparatus, and systems. It should be understood that the technology may be embodied in many different forms and in many different orders and should not be construed as limited to the embodiments set forth herein. rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the skill to those skilled in the art. Indeed, the technology encompasses alternatives, modifications, and equivalents of these embodiments that fall within the scope and spirit of the technology as defined by the appended claims. Moreover, in the following detailed description of the technology, numerous specific details are set forth in order to provide a thorough understanding of the technology. However, it will be apparent to those skilled in the art that the technology may be practiced without such specific details.

The order of method steps and component structures is provided herein for purposes of illustration and not limitation. The foregoing detailed description of the techniques has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the techniques to the precise forms disclosed. Many modifications and variations are possible in light of the above teachings. The described embodiments are chosen to best explain the principles of the technology and its practical application, thereby allowing those skilled in the art to best utilize the technology in various embodiments, and various modifications are contemplated. suitable for certain applications. It is intended that the scope of technology be defined by the claims appended hereto.

FIG. 1 schematically illustrates an example wireless communication scenario involving a user equipment (UE) and a base station such as an eNodeB (eNB).

In a wireless communication scenario, when two user equipment (UE) terminals (eg, mobile communication devices) in a wireless communication network communicate with each other, their data path is typically through an operator network. A data path through a network may include base stations (such as eNBs) and/or gateways. If the devices are close to each other, their data paths may be routed locally through local base stations. The data path from the UE to the eNB is commonly referred to as the uplink channel or uplink (or UL for short), and the data path from the eNB to the UE is commonly referred to as the downlink channel or downlink (or DL for short). called.

It is also possible for two UE terminals that are close to each other to establish a direct link or direct communication without going through a base station such as an eNB. A telecommunications system may use device-to-device (“D2D”) or vehicle-to-vehicle (“V2V”) communication, in which two or more UE terminals communicate directly with each other. can be done. In D2D or V2V communication, voice and/or data traffic (referred to herein as "user traffic or user data") from one UE terminal to one or more other UE terminals is controlled by a telecommunications system. may not be communicated via any base station or other network control device. D2D or V2V communication has recently also become known as "sidelink direct communication" or "sidelink" communication, and is accordingly sometimes referred to as "SLD" or "SL ” is omitted. Thus, D2D or V2V, sidelink direct, and sidelink or sidelink channel are used interchangeably herein, but all have the same meaning.

In order to allocate and manage radio resources for performing wireless communications, the prior art provides solutions for allocating and recovering radio resources in the Physical Uplink Control Channel (PUCCH). there is Taking Scheduling Request (SR) resource allocation in PUCCH as an example, the solutions are as follows. That is, when the radio resource manager of the base station creates a resource pool and a UE accesses the network, the radio resource manager searches the resource pool and if it finds an unused resource it allocates it to the UE, and if the resource is in use Set to in-use state. When the UE releases the resource, the radio resource manager sets the resource to a not-in-use state.

However, the above solution for allocating resources stores used and unused resources mixedly and does not distinguish between different resource types in the above solution for allocating resources, so congestion control is performed on all resources as a whole, therefore improved solutions for better resource allocation and congestion control are needed.

FIG. 2 schematically illustrates a block diagram of a wireless communication device 200 according to an embodiment of the present disclosure.

A wireless communication device 200 at a first node according to embodiments of the present disclosure includes a transceiver 201 operable to transmit and/or receive radio signals and one or more channel busy signals for a channel resource pool of radio signals. a circuit 202 that measures a Channel Busy Ratio (CBR) and operates to perform congestion control on the channel resource pool based on the measured one or more channel busy ratios.

The CBR proposed herein generally reflects the congestion situation in wireless communication, meaning how many resources are occupied, and can be observed at both the UE side and the eNB side. By measuring CBR, the UE or eNB can take relevant actions for congestion control based on the degree of CBR. Therefore, CBR measurements are the basis for congestion control.

This embodiment can measure the CBR of the entire bandwidth including all D2D or V2V resource pools. Relevant actions can then be taken based on the CBR measurements. In this way, congestion situations can be controlled and balanced.

Furthermore, in order to perform sophisticated operation, distinguish between transmission mode 1 and transmission mode 2 specified in 3GPP, or scheduling assignment (SA: Scheduling assignment) and data situation, SA resources (or in general In order to know if a control channel resource, speaking, is congested, or a data resource, speaking generally, or a data channel resource, in one embodiment, the circuit 202 detects different signals for each wireless signal. It is operable to measure channel busy rates for the types of channel resource pools and perform congestion control for different types of channel resource pools based on the measured channel busy rates.

Thus, in order to obtain improved congestion control results, in the solution according to embodiments of the present disclosure, the circuit 202 measures the CBR for each different type of channel resource pool of the wireless signal and Based on the obtained channel busy rate, congestion control can be performed for different types of channel resource pools. In this way, each CBR for each type of channel resource pool can be measured separately, and the congestion situation for each type of channel resource pool can be clearly known, and for this type of channel resource pool separately It can implement its own unique congestion control. Such congestion control may therefore be more accurate and efficient.

In this case, first, the congestion of specific resource pools can be ameliorated separately if the average congestion for the overall bandwidth fails to inform details about different types of resource pools. And secondly, the congestion situation can be observed for each type of resource pool and relevant actions can be taken for each type of resource pool. Third, power can be saved for measuring all resource pools each time.

In one embodiment, CBR can be measured by calculating the ratio of the number of occupied resources to the total number of resources. The resource occupancy number indicates the number of calculation units of radio signals having power greater than the threshold, and the total number of resources indicates the total number of calculation units of radio signals.

By way of non-limiting example, CBR can be measured by the following equation (1).

CBR = number of occupants/total number...Formula (1)

The occupancy number indicates the number of calculation units of the radio signal having power greater than the threshold, as described above, and the total number indicates the total number of calculation units of the radio signal, as described above.

In one embodiment, the calculation unit of the radio signal may include one or more physical resource blocks (PRB), or one or more resource block groups (RBG), or other units for calculating power. Often, power may include radio signal power strength, or power spectral density, or others to assess power intensity or usage.

In one embodiment, the different types of channel resource pools for the wireless signal may include a control channel resource pool and a data channel resource pool, the circuit measuring a first channel busy rate for the control channel resource pool, It is operable to measure a second channel busy percentage for the channel resource pool.

FIG. 3A schematically illustrates several subframes and resource pools of radio signals within the subframes.

The concept of resource pool is defined in the 3GPP specifications and includes time/frequency resources for transmitting channels of the same type. Currently, the 3GPP Release 12/13 specifications define SA data resource pools and data resource pools. To extend the usage to V2V, data resource pools and SA resource pools can also be defined in V2V implementations. Then, based on the V2V agreement in 3GPP RAN1, SA and data are transmitted within the same subframe, and SA resource pool and data resource pool are also transmitted within the same subframe, as shown in FIG. 3A. Can be configured. UEs in transmission mode 1 and transmission mode 2 take the same usage of resources.

In one embodiment, the control channel resource pool is used to transmit or receive a control channel (carrying control radio signaling) and reserves resources that can be used to transmit SA or sidelink control channel (PSCCH). It may be a resource pool containing And the data channel resource pool may be a resource pool containing resources used for transmitting or receiving user traffic or user data (or user load), which from the point of view of the 3GPP physical protocol is a physical sidelink shared channel. (PSSCH: Physical Sidelink Shared Channel).

FIG. 3B schematically shows an example for explaining the measurement operation of a wireless communication device according to an embodiment of the disclosure.

As shown in FIG. 3B, different types of channel resource pools for wireless signals may include SA channel resource pools (indicated as SA in the figure) and data channel resource pools (indicated as DATA in the figure). good. Circuitry 202 shown in FIG. 2 separately measures a first channel busy rate (CBR1) for the SA channel resource pool and a second channel busy rate (CBR2) for the data channel resource pool. can operate to

In this way, each CBR for each type of channel resource pool can be measured separately, and specific and unique congestion control can be performed separately for this type of channel resource pool. Such congestion control may therefore be more accurate and efficient.

In one embodiment, the first node may be operating in one of the different transmission modes, and the circuitry configures the channel for each different type of channel resource pool of wireless signals for the different transmission modes. It can operate to measure the busy rate.

In one embodiment, the different transmission modes are a first transmission mode (e.g., 3GPP defined mode 1 in which transmission is based on base station scheduling) and a second transmission mode (e.g., user equipment autonomous mode 2) defined in 3GPP, which is a flexible resource allocation mode. Although two transmission modes are illustrated here, the number of transmission modes is not limited to two, and may be another number.

In this case, FIG. 4 schematically shows an example for explaining another measurement operation of a wireless communication device according to another embodiment of the present disclosure.

As shown in FIG. 4, the circuit measures the CBR for different types of channel resource pools of the radio signal respectively for different transmission modes, e.g., the CBR1 for the SA resource pool within mode 1 resources. , measure CBR2 for data resource pools in mode 1 resources, measure CBR3 for SA resource pools in mode 2 resources, and measure CBR4 for data resource pools in mode 2 resources can operate to

In this way, each CBR for each type of channel resource pool can be measured separately in different transmission modes, and this transmission mode performs unique congestion control separately for this type of channel resource pool. be able to. Such congestion control may therefore be more accurate and efficient.

FIG. 5 schematically shows an example for explaining another measurement operation of a wireless communication device according to another embodiment of the disclosure.

In this embodiment, the different transmission modes are a first transmission mode (e.g., 3GPP defined mode 1 in which transmission is based on base station scheduling) and a second transmission mode (e.g., user equipment autonomous Suppose we include mode 2) defined in 3GPP, which is a resource allocation mode.

If the first node is operating in a first transmission mode, e.g., mode 1, circuitry 202 measures a first channel busy rate CBR1 for the control channel resource pool for the first transmission mode; 1 transmission mode, a second channel busy rate CBR2 for the data channel resource pool for mode 1.

Thus, a UE in mode 1 can measure CBR for control channel resource pool and data channel resource pool resources in mode 1 without measuring CBR for control channel resource pool and data channel resource pool resources in mode 2. It only measures CBR, including CBR. This saves power and increases efficiency while maintaining accurate CBR measurements and congestion control.

On the other hand, if the first node is operating in a second transmission mode, eg, mode 2, circuitry 202 measures a third channel busy rate CBR3 for the control channel resource pool intended for the second transmission mode, and It is operable to measure a fourth channel busy rate CBR4 for the data channel resource pool for the second transmission mode, mode2.

Thus, the UE in mode 2 does not measure the CBR for the control channel resource pool and data channel resource pool resources in mode 1, and the CBR for the control channel resource pool and the data channel resource pool resources in mode 2. It only measures CBR, including CBR. This saves power and increases efficiency while maintaining accurate CBR measurements and congestion control.

FIG. 6 schematically shows an example for explaining another measurement operation of a wireless communication device according to another embodiment of the disclosure.

In this embodiment, if the wireless signal is a wireless signal on multiple carriers in the frequency domain, the circuitry 202 is operable to measure channel busy rates for different types of channel resource pools for each carrier. .

Assume that the radio signal is formed from Carrier Component 1 (CC1), Carrier Component 2 (CC2), and Carrier Component 3 (CC3), as shown in FIG. Circuit 202 measures CBR1, which includes the CBR for the control channel resource pool and the CBR for the data channel resource pool resource, respectively, for carrier CC1, and the CBR for the control channel resource pool and the data channel resource for carrier CC2. It is operable to measure CBR2, which includes CBR for pool resources, and measure CBR3, which includes CBR for control channel resource pools and CBR for data channel resource pool resources, for carrier CC3.

From the above method in which CBR is measured per CC, more accurate CBR measurement and congestion control can be obtained, and power consumption can also be saved.

After the CBR is measured, the measured CBR is compared with a predetermined threshold to determine the congestion situation. The predetermined threshold may be specified, preconfigured, or RRC configured.

If one or more of the channel busy rates exceed a predetermined threshold, circuitry 202 selects one or more of different types of channel resource pools corresponding to one or more of the channel busy rates. may operate to instruct transceiver 201 to transmit radio signals that are not within unoccupied resources in the . Here, one or more of the different types of channel resource pools corresponding to one or more of the channel busy rates indicate channel resource pools in which the channel busy rate exceeds a predetermined threshold, and the congestion channel Also called resource pool.

Such an act of transmitting a radio signal not within an unoccupied resource includes transmitting a radio signal within an occupied resource for data having a lower priority than the priority of the radio signal being transmitted; transmitting a radio signal in the occupied resource by discarding data occupying the resource, transmitting the radio signal by adjusting radio parameters for the radio signal, and transmitting the radio signal Including one or more of delaying for a predetermined amount of time, as well as other actions for not occupying occupied resources in the congested resource pool. In one embodiment, the radio parameters for the radio signal may include one or more of the transmit power and number of transmissions of the transport block or other parameters. In this case, radio signal priority may be specified or RRC configured.

If one or more of the channel busy percentages do not exceed a predetermined threshold, circuitry 202 selects one or more of different types of channel resource pools corresponding to one or more of the channel busy percentages. It is operable to instruct the transceiver to transmit wireless signals within unoccupied resources among the plurality.

As a specific example, for modes 1 and 2 as defined in 3GPP, and when the first node is a UE, since the eNB is responsible for scheduling and congestion control when the UE is in mode 1, After measuring the CBR for Mode 1 on the UE side and notifying the eNB of the measured value, the eNB transmits a radio signal that is not in the unoccupied resource, or transmits a radio signal in the unoccupied resource. Note that the UE (including circuitry 202 in the UE) should be instructed to instruct the transceiver to do so. On the other hand, since the UE itself can be responsible for scheduling and congestion control when the UE is in mode 2, after measuring the CBR for mode 2, the UE (including circuit 202 at the UE) can The transceiver can be instructed to transmit radio signals that are not in the network or to transmit radio signals in unoccupied resources.

However, it is not limited who is responsible for scheduling and congestion control and who sends orders, and in some embodiments there are different transmission modes, as long as the CBRs for different transmission modes are measured respectively, who is Even in charge of scheduling and congestion control, specific congestion control can be performed on the first node to achieve effects including power consumption savings, accurate congestion control, and the like.

Figures 7A-7D schematically illustrate different congestion control actions for different congestion situations.

Different congestion situations can be divided according to both the control channel resource pool congestion situation and the data channel resource pool congestion situation.

As shown in FIGS. 7A-7D, the term "congested" indicates that the channel busy rate exceeds (ie, is equal to or greater than) a predetermined threshold, and "not congested" ' indicates that the channel busy rate does not exceed (ie, is less than) a predetermined threshold.

In FIG. 7A, the SA resource pool is uncongested and the data resource pool is congested based on CBR measurements. Based on the straightforward solution described above, where CBR is measured based on the overall bandwidth, without measuring each CBR separately for each type of resource pool, the CBR level is probably low, so the data resource Data is sent within unoccupied resources in the pool. However, such behavior leads to a heavier congestion situation for data transmission, especially if the data channel resource pool is already congested.

Based on the proposal of the embodiments of the present disclosure that the CBR for SA and data are measured separately, even if the overall congestion situation for the total bandwidth is not yet congested, the SA resource pool is not congested. You can clearly know when the data resource pool is congested. So, different actions can be taken for SA resource pools and data resource pools by:
1. For the data channel resource pool, preempting low priority packets for data transmission in occupied resources in the data channel resource pool when the CBR of the data is high and the data channel resource pool is congested to (preempt). Furthermore, there is no need to send packets in unoccupied resources.
2. For the SA channel resource pool, data can be sent in unoccupied resources in the SA channel resource pool when the SA's CBR is low and the SA channel resource pool is not congested.

By doing so, the operating rate of the SA resource pool is improved, and the congestion situation of the data resource pool is not deteriorated. The utilization of each resource pool can be optimized to improve congestion control for each across resource pools.

In this example, preemption means transmitting a radio signal within resources occupied for data having a lower priority than the priority of the radio signal being transmitted, and refers to congestion control. be. For example, transmitting a wireless signal within an occupied resource by discarding data occupying the occupied resource; transmitting a wireless signal by adjusting a wireless parameter for the wireless signal; Other possibilities are also conceivable, including a predetermined time delay for transmission, as well as others.

In FIG. 7B, the SA resource pool is congested and the data resource pool is not, based on CBR measurements.

Based on the proposal of the embodiments of the present disclosure that the CBR for SA and data are measured separately, the SA resource pool is congested even if the overall congestion situation for the total bandwidth is not yet congested. , we can clearly know that the data resource pool is not congested. So, different actions can be taken for SA resource pools and data resource pools by:
1. For the SA channel resource pool, when the SA's CBR is high and the SA channel resource pool is congested, preempt low priority packets for data transmission in the occupied resources in the SA channel resource pool. do. Furthermore, there is no need to send packets in unoccupied resources.
2. For the data channel resource pool, data can be sent in unoccupied resources in the data channel resource pool when the CBR of the data is low and the data channel resource pool is not congested.

By doing so, the operating rate of the data resource pool is improved, and the congestion situation of the SA resource pool is not deteriorated. The utilization of each resource pool can be optimized to improve congestion control for each across resource pools.

In FIG. 7C, the SA resource pool is congested and so is the data resource pool, based on the CBR measurements.

Based on the proposal of the embodiment of the present disclosure that the CBR for SA and data are measured separately, it can be clearly known that the SA resource pool is congested and the data resource pool is also congested . So, actions can be taken on SA resource pools and data resource pools by:

For data transmission in the occupied resources in both the SA channel resource pool and the data channel resource pool when both the SA and data CBR are high for both the SA channel resource pool and the data channel resource pool preempt lower priority packets.

By doing so, the congestion situation of the SA resource pool and the data resource pool will not get worse.

In FIG. 7D, the SA resource pool is uncongested and the data resource pool is uncongested based on CBR measurements.

Based on the proposal of the embodiments of the present disclosure, where the CBR for SA and data are measured separately, it is clearly possible to know that the SA resource pool is not congested and the data resource pool is not congested. can. So, actions can be taken on SA resource pools and data resource pools by:

Sending data in unoccupied resources in both the SA channel resource pool and the data channel resource pool when both the SA and data CBRs are low for both the SA channel resource pool and the data channel resource pool. can be done.

By doing so, the availability of both the data resource pool and the SA resource pool is improved.

FIG. 8 schematically shows an example for explaining the notification operation of a wireless communication device according to an embodiment of the present disclosure.

CBR can be measured at the eNB side and the UE does not signal it. However, since the eNB side cannot know the interference situation at the UE side, the CBR value observed at the eNB side may be too conservative. Because, due to the large distance, some occupied resources may still be used by other UEs with no or only minor interference with each other.

So, as proposed in this embodiment, the transceiver 201 at the first node can operate to inform the second node of the measured channel busy rate, and the first node is responsible for the user It may be an equipment (UE) and the second node may be a base station (eNB). That is, the UE side measures CBR and notifies them to the eNB side.

As shown in Figure 8, if one resource is allocated to UE1 and another resource is allocated to UE2 based on eNB observations, the CBR is 50%. However, on the UE side, UE1's transmission does not interfere with UE2, so the relevant resource (upper left resource in the figure) can still be used for transmission by UE2. Therefore, the CBR observed by UE2 is 25%, which is lower than the eNB observed. In this case, the observations on the UE side are more accurate.

The advantage of the UE notifying the eNB of the CBR is that the UE can observe the CBR more accurately, so congestion control for each type of channel source pool can be more accurate and efficient.

In one embodiment, the transceiver 201 at the UE side performs the following conditions: after a predetermined period of time (i.e. periodically), at least one of the measured channel busy percentages exceeds a predetermined threshold; or the notification is triggered by the base station, i.e. the eNB, to notify the eNB of the measured channel busy rate CBR.

Detailed congestion control can then be performed on the eNB side, but is not limited to this.
1. The eNB may adjust the SA resource pool or the data resource pool based on the signaled CBR of SA and data respectively.
2. The eNB can adjust the congestion situation by scheduling (eg, not scheduling certain low priority packets for certain UEs).

An advantage of the eNB performing fine-grained congestion control is that the eNB can know more about the overall congestion situation of the UE, compared to congestion control that relies entirely on the eNB implementation. Spectral efficiency can be improved.

Thus, in the embodiments of the present disclosure, each CBR for each type of channel resource pool can be measured separately, the congestion situation for each type of channel resource pool can be clearly known, and this type of channel Each resource pool can have its own unique congestion control. Such congestion control may therefore be more accurate and efficient.

In another embodiment, the wireless communication device 200 at the first node according to embodiments of the present disclosure includes a transceiver 201 operable to transmit and/or receive wireless signals and one channel resource pool for wireless signals. and circuitry 202 operable to measure one or more channel busy ratios (CBR) and perform congestion control on the channel resource pool based on the measured one or more channel busy ratios. The first node may then be operating in one of different transmission modes, and circuitry 202 is configured to measure channel busy rates for channel resource pools of wireless signals for the different transmission modes. can work.

In this embodiment, each CBR for each transmission mode can be measured separately, the congestion situation for each transmission mode can be clearly known, and a unique congestion control method that is unique to the UE in each transmission mode separately can be executed. Such congestion control may therefore be more accurate and efficient.

In another embodiment, the wireless communication device 200 at the first node according to embodiments of the present disclosure includes a transceiver 201 operable to transmit and/or receive wireless signals and one channel resource pool for wireless signals. and circuitry 202 operable to measure one or more channel busy ratios (CBR) and perform congestion control on the channel resource pool based on the measured one or more channel busy ratios. And if the wireless signal is a wireless signal on multiple carriers, the circuitry 202 is operable to measure the channel busy rate for the channel resource pool for each carrier.

In this embodiment, each CBR for each carrier can be measured separately, the congestion situation for each carrier can be clearly known, and independent and unique congestion control can be performed for each carrier individually. can. Such congestion control may therefore be more accurate and efficient.

FIG. 9A schematically illustrates a flowchart of a wireless communication method 900 according to one embodiment of the disclosure.

The method 900 comprises, in a first node, measuring S901 channel busy rates for different types of channel resource pools of respective wireless signals; and a step S902 of executing congestion control.

In this way, each CBR for each type of channel resource pool can be measured separately, and the congestion situation for each type of channel resource pool can be clearly known, and for this type of channel resource pool separately It can implement its own unique congestion control. Such congestion control may therefore be more accurate and efficient.

In one embodiment, the different types of channel resource pools for wireless signals may include a control channel resource pool and a data channel resource pool, step S901 measures a first channel busy rate for the control channel resource pool; Measuring a second channel busy rate for the data channel resource pool may be included.

In one embodiment, the first node may be operating in one of the different transmission modes, and step S901 is for each different type of channel resource pool of the radio signal for the different transmission modes. A step of measuring a channel busy rate may be included.

In one embodiment, the different transmission modes may include a first transmission mode in which transmission is based on base station scheduling and a second transmission mode in which the user equipment is in an autonomous resource allocation mode. If the first node is operating in the first transmission mode, step S901 measures a first channel busy rate for the control channel resource pool for the first transmission mode; measuring a second channel busy rate for the data channel resource pool.

In one embodiment, different transmission modes may include a first transmission mode and a second transmission mode. If the first node is operating in the second transmission mode, step S901 measures a first channel busy rate for the control channel resource pool for the second transmission mode; measuring a second channel busy rate for the data channel resource pool.

In one embodiment, if the wireless signal is a wireless signal of multiple carriers, step S901 may include measuring channel busy rates for different types of channel resource pools for each carrier.

In one embodiment, if one or more of the channel busy percentages exceeds a predetermined threshold, step S902 selects among different types of channel resource pools corresponding to one or more of the channel busy percentages. transmitting wireless signals that are not within unoccupied resources in one or more of the .

In one embodiment, if one or more of the channel busy percentages exceeds a predetermined threshold, step S902 performs the occupied transmitting the wireless signal within the resource; transmitting the wireless signal within the occupied resource by discarding data occupying the occupied resource; and delaying for a predetermined time to transmit the radio signal.

In one embodiment, the radio parameters for the radio signal may include one or more of transmit power and transmission times of the transport block.

In one embodiment, if one or more of the channel busy percentages do not exceed a predetermined threshold, step S902 determines different types of channel resource pools corresponding to one or more of the channel busy percentages. transmitting wireless signals in unoccupied resources in one or more of the.

In one embodiment, the method 900 may further comprise communicating the measured channel busy rate to a second node, the first node being a user equipment and the second node being a base station.

In one embodiment, the step of notifying is performed under the following conditions: a predetermined period of time elapses, at least one of the measured channel busy rates exceeds a predetermined threshold, or notification is triggered by the base station , informing the second node of the measured channel busy rate.

In one embodiment, step 902 may include measuring a channel busy ratio (CBR) by calculating a ratio of resource occupancy to total resources, where the source occupancy is greater than a threshold The number of calculation units of radio signals with power is indicated, and the total number of resources indicates the total number of calculation units of radio signals.

In one embodiment, a unit of calculation of a radio signal may include one or more physical resource blocks or one or more resource block groups, and power may include radio signal power strength or power spectral density. .

In one embodiment, the control channel resource pool may comprise a physical sidelink control channel (PSCCH) resource pool and the data channel resource pool may comprise a physical sidelink shared channel (PSSCH) resource pool.

Thus, in the embodiments of the present disclosure, each CBR for each type of channel resource pool can be measured separately, the congestion situation for each type of channel resource pool can be clearly known, and this type of channel Each resource pool can have its own unique congestion control. Such congestion control may therefore be more accurate and efficient.

FIG. 9B schematically shows a flowchart of a wireless communication method 900' according to another embodiment of the present disclosure.

The method 900' comprises, at a first node, measuring S901' one or more channel busy rates for a channel resource pool of wireless signals for different transmission modes; and a step S902' of performing congestion control for different types of channel resource pools.

In this embodiment, each CBR for each transmission mode can be measured separately, the congestion situation for each transmission mode can be clearly known, and a unique congestion control method that is unique to the UE in each transmission mode separately can be executed. Such congestion control may therefore be more accurate and efficient.

FIG. 9C schematically illustrates a flowchart of a wireless communication method 900'' according to another embodiment of the present disclosure.

The method 900'' comprises, at a first node, measuring one or more channel busy ratios for channel resource pools of wireless signals for different transmission modes S901''; performing congestion control for different types of channel resource pools based on the step S902''.

In this embodiment, each CBR for each carrier can be measured separately, the congestion situation for each carrier can be clearly known, and independent and unique congestion control can be performed for each carrier individually. can. Such congestion control may therefore be more accurate and efficient.

FIG. 10 schematically illustrates a block diagram of a wireless communication system 1000 according to one embodiment of the disclosure.

The system 1000 comprises, in a first node, a processor H1 and, when executed by the processor, steps S901 of measuring channel busy rates for channel resource pools of different types of wireless signals respectively; and performing congestion control on different types of channel resource pools based on different types of channel resource pools.

In one embodiment, the different types of channel resource pools for wireless signals may include a control channel resource pool and a data channel resource pool, step S901 measures a first channel busy rate for the control channel resource pool; Measuring a second channel busy rate for the data channel resource pool may be included.

In one embodiment, the first node may be operating in one of the different transmission modes, and step S901 includes, for the different transmission modes, channel resource pools of different types of radio signals respectively. A step of measuring a channel busy rate may be included.

In one embodiment, the different transmission modes may include a first transmission mode in which transmission is based on base station scheduling and a second transmission mode in which the user equipment is in an autonomous resource allocation mode. If the first node is operating in the first transmission mode, step S901 measures a first channel busy rate for the control channel resource pool for the first transmission mode; measuring a second channel busy rate for the data channel resource pool.

In one embodiment, different transmission modes may include a first transmission mode and a second transmission mode. If the first node is operating in the second transmission mode, step S901 measures a first channel busy rate for the control channel resource pool for the second transmission mode; measuring a second channel busy rate for the data channel resource pool.

In one embodiment, if the wireless signal is a wireless signal of multiple carriers, step S901 may include measuring channel busy rates for different types of channel resource pools for each carrier.

In one embodiment, if one or more of the channel busy percentages exceeds a predetermined threshold, step S902 selects among different types of channel resource pools corresponding to one or more of the channel busy percentages. transmitting wireless signals that are not within unoccupied resources in one or more of the .

In one embodiment, if one or more of the channel busy percentages exceeds a predetermined threshold, step S902 performs the occupied transmitting the wireless signal within the resource; transmitting the wireless signal within the occupied resource by discarding data occupying the occupied resource; and delaying for a predetermined time to transmit the radio signal.

In one embodiment, the radio parameters for the radio signal may include one or more of transmit power and transmission times of the transport block.

In one embodiment, if one or more of the channel busy percentages do not exceed a predetermined threshold, step S902 determines different types of channel resource pools corresponding to one or more of the channel busy percentages. transmitting wireless signals in unoccupied resources in one or more of the.

In one embodiment, the method 900 may further comprise communicating the measured channel busy rate to a second node, the first node being a user equipment and the second node being a base station.

In one embodiment, the step of notifying is performed under the following conditions: a predetermined period of time elapses, at least one of the measured channel busy rates exceeds a predetermined threshold, or notification is triggered by the base station , informing the second node of the measured channel busy rate.

In one embodiment, step 902 may include measuring a channel busy ratio (CBR) by calculating a ratio of resource occupancy to total resources, where the source occupancy is greater than a threshold The number of calculation units of radio signals with power is indicated, and the total number of resources indicates the total number of calculation units of radio signals.

In one embodiment, a unit of calculation of a radio signal may include one or more physical resource blocks or one or more resource block groups, and power may include radio signal power strength or power spectral density. .

In one embodiment, the control channel resource pool may comprise a physical sidelink control channel (PSCCH) resource pool and the data channel resource pool may comprise a physical sidelink shared channel (PSSCH) resource pool.

Thus, in the embodiments of the present disclosure, each CBR for each type of channel resource pool can be measured separately, the congestion situation for each type of channel resource pool can be clearly known, and this type of channel Each resource pool can have its own unique congestion control. Such congestion control may therefore be more accurate and efficient.

Additionally, embodiments of the present disclosure may provide at least the following subject matter.

(1). at the first node,
a transceiver operable to transmit and/or receive radio signals;
A circuit operable to measure one or more channel busy rates for a channel resource pool of a wireless signal and perform congestion control on the channel resource pool based on the measured one or more channel busy rates. An apparatus comprising and .

(2). circuitry operable to measure channel busy rates for different types of channel resource pools of respective wireless signals and perform congestion control for the different types of channel resource pools based on the measured channel busy rates;
The device according to (1).

(3). different types of channel resource pools for wireless signals include control channel resource pools and data channel resource pools;
the circuit operates to measure a first channel busy rate for the control channel resource pool and measure a second channel busy rate for the data channel resource pool;
The device according to (3).

(4). such that the first node is operating in one of the different transmission modes, and the circuitry measures channel busy rates for different types of channel resource pools of wireless signals for the different transmission modes, respectively; The device of (2), in operation.

(5). the different transmission modes include a first transmission mode in which transmission is based on base station scheduling and a second transmission mode in which the user equipment is in an autonomous resource allocation mode;
If the first node is operating in a first transmission mode, circuitry measures a first channel busy rate for the control channel resource pool for the first transmission mode; operable to measure a second channel busy rate for the data channel resource pool;
The device according to (4).

(6). the different transmission modes include a first transmission mode and a second transmission mode;
If the first node is operating in the second transmission mode, circuitry measures a first channel busy rate for the control channel resource pool for the second transmission mode; operable to measure a second channel busy rate for the data channel resource pool;
The device according to (4).

(7). The apparatus of (2), wherein the circuit is operable to measure channel busy rates for different types of channel resource pools for each carrier, if the wireless signal is a multiple carrier wireless signal.

(8). If one or more of the channel busy rates exceed a predetermined threshold, the wireless signal is transferred to one or more of different types of channel resource pools corresponding to one or more of the channel busy rates. The device of (2), not transmitted in unoccupied resources in

(9). the circuit
transmitting a radio signal within the occupied resource for data having a lower priority than the priority of the transmitted radio signal;
transmitting a radio signal within the occupied resource by discarding data occupying the occupied resource;
to instruct the transceiver to perform one or more of: transmitting a radio signal by adjusting radio parameters for the radio signal; and delaying a predetermined time to transmit the radio signal. The device according to (8), which operates in

(10). 9. The apparatus of claim 9, wherein the radio parameters for the radio signal include one or more of transmit power and transmission times of the transport block.

(11). If one or more of the channel busy rates do not exceed a predetermined threshold, the wireless signal is transferred to one or more of different types of channel resource pools corresponding to one or more of the channel busy rates. The apparatus of (2), transmitted within unoccupied resources among the plurality.

(12). The apparatus of (2), wherein the transceiver is operable to communicate the measured channel busy rate to a second node, the first node being a user equipment and the second node being a base station.

(13). If the transceiver:
after a certain period of time,
at least one of the measured channel busy percentages exceeds a predetermined threshold, or notification is triggered by the base station;
13. The apparatus of (12) operable to notify the second node of the measured channel busy rate in response to one of:

(14). the circuit operates to measure a channel busy ratio (CBR) by calculating the ratio of the number of occupied resources to the total number of resources;
the number of sources occupied indicates the number of computational units of the wireless signal with power greater than the threshold, and the total number of resources indicates the total number of computational units of the wireless signal;
(2) The apparatus according to (2).

(15). 15. The apparatus of (14), wherein the wireless signal computational unit includes one or more physical resource blocks or one or more resource block groups, and the power includes wireless signal power strength or power spectral density.

(16). The apparatus of (3), wherein the control channel resource pool comprises a physical sidelink control channel (PSCCH) resource pool and the data channel resource pool comprises a physical sidelink shared channel (PSSCH) resource pool.

(17). The first node is operating in one of the different transmission modes, and the circuitry is operative to measure a channel busy rate for the channel resource pool of the wireless signal for the different transmission modes ( 1) The device as described in 1).

(18). The apparatus of (1), wherein the circuit operates to measure a channel busy rate for the channel resource pool for each carrier when the wireless signal is a wireless signal on multiple carriers.

(19). At a first node operable to transmit and/or receive radio signals,
measuring one or more channel busy rates for a channel resource pool of wireless signals;
and performing congestion control on the channel resource pool based on one or more measured channel busy percentages.

(20). different types of channel resource pools for wireless signals include control channel resource pools and data channel resource pools;
the measuring step comprises measuring a first channel busy rate for the control channel resource pool and measuring a second channel busy rate for the data channel resource pool;
(19) The method as described in.

(21). The first node is operating in one of different transmission modes, and the measuring step measures channel busy rates for different types of channel resource pools of wireless signals for the different transmission modes, respectively. The method of (19), comprising steps.

(22). the different transmission modes include a first transmission mode in which transmission is based on base station scheduling and a second transmission mode in which the user equipment is in an autonomous resource allocation mode;
If the first node is operating in the first transmission mode, the measuring step measures a first channel busy rate for the control channel resource pool for the first transmission mode; measuring a second channel busy rate for the data channel resource pool for
The method according to (21).

(23). the different transmission modes include a first transmission mode and a second transmission mode;
If the first node is operating in the second transmission mode, the measuring step measures a first channel busy rate for the control channel resource pool for the second transmission mode; measuring a second channel busy rate for the data channel resource pool for
The method according to (21).

(24). The method of (19), if the radio signal is a radio signal of multiple carriers, the measuring step comprises measuring channel busy rates for different types of channel resource pools for each carrier.

(25). If one or more of the channel busy percentages exceeds a predetermined threshold, the step of performing comprises: selecting one or more of different types of channel resource pools corresponding to one or more of the channel busy percentages; 19. The method of (19), comprising transmitting a wireless signal that is not within an unoccupied resource among the plurality.

(26). The steps to perform are
transmitting a radio signal within the occupied resource for data having a lower priority than the priority of the radio signal to be transmitted;
transmitting a radio signal within the occupied resource by discarding data occupying the occupied resource;
26. The method of claim 25, comprising one or more of: transmitting the wireless signal by adjusting a wireless parameter for the wireless signal; and delaying a predetermined amount of time to transmit the wireless signal.

(27). 26. The method of (25), wherein the radio parameters for the radio signal include one or more of transmission power and number of transmissions of the transport block.

(28). If one or more of the channel busy percentages do not exceed a predetermined threshold, performing the step of selecting one of different types of channel resource pools corresponding to one or more of the channel busy percentages. 19. The method of claim 19, comprising transmitting the wireless signal in unoccupied resources among the or plurality.

(29). The method of (19), wherein the method further comprises communicating the measured channel busy rate to a second node, the first node being a user equipment and the second node being a base station.

(30). The method, but the following conditions:
after a certain period of time,
at least one of the measured channel busy percentages exceeds a predetermined threshold, or notification is triggered by the base station;
The method of (29), further comprising notifying the second node of the measured channel busy rate in response to one of:

(31). the measuring step comprises measuring a channel busy ratio (CBR) by calculating a ratio of the number of occupied resources to the total number of resources;
the number of sources occupied indicates the number of computational units of the wireless signal with power greater than the threshold, and the total number of resources indicates the total number of computational units of the wireless signal;
(19) The method as described in.

(32). The method of (31), wherein the computational unit of the radio signal comprises one or more physical resource blocks or one or more resource block groups, and the power comprises radio signal power strength or power spectral density.

(33). The method of (20), wherein the control channel resource pool comprises a physical sidelink control channel (PSCCH) resource pool and the data channel resource pool comprises a physical sidelink shared channel (PSSCH) resource pool.

(34). the first node is operating in one of the different transmission modes, and the measuring comprises measuring channel busy rates for the channel resource pool of the wireless signal for the different transmission modes; (19) The method as described in.

(35). The method of (19), if the wireless signal is a multiple carrier wireless signal, the measuring step comprises measuring a channel busy rate for the channel resource pool for each carrier.

(36). at the first node,
a processor;
When executed by the processor,
measuring a channel busy rate for each different type of channel resource pool of wireless signals;
and performing congestion control on different types of channel resource pools based on measured channel busy percentages.

(37). different types of channel resource pools for wireless signals include control channel resource pools and data channel resource pools;
the measuring step comprises measuring a first channel busy rate for the control channel resource pool and measuring a second channel busy rate for the data channel resource pool;
The system according to (36).

(38). The first node is operating in one of different transmission modes, and the measuring step measures channel busy rates for different types of channel resource pools of wireless signals for the different transmission modes, respectively. (36) The system of (36), comprising steps.

(39). different transmission modes include a first transmission mode and a second transmission mode;
If the first node is operating in the first transmission mode, the measuring step measures a first channel busy rate for the control channel resource pool for the first transmission mode; measuring a second channel busy rate for the data channel resource pool for
The system according to (38).

(40). different transmission modes include a first transmission mode and a second transmission mode;
The measuring step measures a first channel busy rate for the control channel resource pool for the second transmission mode and measures a second channel busy rate for the data channel resource pool for the second transmission mode. including steps,
The system according to (38).

(41). The system of (36), wherein the wireless signal is a wireless signal of multiple carriers, wherein the measuring step comprises measuring channel busy ratios for different types of channel resource pools for each carrier.

(42). If one or more of the channel busy percentages exceeds a predetermined threshold, the step of performing comprises: selecting one or more of different types of channel resource pools corresponding to one or more of the channel busy percentages; The system of (36), comprising transmitting the wireless signal not within unoccupied resources among the plurality.

(43). The steps to perform are
transmitting a radio signal within the occupied resource for data having a lower priority than the priority of the radio signal to be transmitted;
transmitting a radio signal within the occupied resource by discarding data occupying the occupied resource;
43. The system of claim 42, comprising one or more of: transmitting the wireless signal by adjusting a wireless parameter for the wireless signal; and delaying a predetermined amount of time to transmit the wireless signal.

(44). (43) The system of (43), wherein the radio parameters for the radio signal include one or more of a transport block transmission power and transmission times.

(45). If one or more of the channel busy percentages do not exceed a predetermined threshold, performing the step of selecting one of different types of channel resource pools corresponding to one or more of the channel busy percentages. (36), comprising transmitting the wireless signal in unoccupied resources among the or more.

(46). The system of (36), wherein the method further comprises communicating the measured channel busy rate to a second node, the first node being a user equipment and the second node being a base station.

(47). The method, but the following conditions:
after a certain period of time,
at least one of the measured channel busy percentages exceeds a predetermined threshold, or notification is triggered by the base station;
46. The system of (46), further comprising notifying the second node of the measured channel busy rate in response to one of:

(48). the measuring step comprises measuring a channel busy ratio (CBR) by calculating a ratio of the number of occupied resources to the total number of resources;
the number of sources occupied indicates the number of computational units of the wireless signal with power greater than the threshold, and the total number of resources indicates the total number of computational units of the wireless signal;
The system according to (36).

(49). 48. The system of (48), wherein the unit of computation of the radio signal comprises one or more physical resource blocks or one or more resource block groups, and the power comprises radio signal power strength or power spectral density.

(50). The system of (37), wherein the control channel resource pool comprises a physical sidelink control channel (PSCCH) resource pool and the data channel resource pool comprises a physical sidelink shared channel (PSSCH) resource pool.

(51). the first node is operating in one of the different transmission modes, and the measuring comprises measuring channel busy rates for the channel resource pool of the wireless signal for the different transmission modes; (36) The method according to.

(52). The method of (36), if the wireless signal is a multiple carrier wireless signal, the measuring step comprises measuring a channel busy rate for the channel resource pool for each carrier.

The present disclosure can be implemented in software, hardware, or software cooperating with hardware. Each functional block used in the description of each embodiment described above can be implemented by an LSI as an integrated circuit, and each process described in each embodiment may be controlled by the LSI. They may be formed individually as chips, or one chip may be formed to include some or all of the functional blocks. They may include data inputs and outputs coupled to them. An LSI in this specification may be called an IC, a system LSI, a super LSI, or an ultra LSI depending on the degree of integration. However, the technique of implementing integrated circuits is not limited to LSIs and may be implemented using dedicated circuits or general-purpose processors. In addition, FPGAs (Field Programmable Gate Arrays), which can be programmed after the LSI is manufactured, or reconfigurable processors, which can reconfigure the connections and settings of circuit cells located inside the LSI, may be used. .

Examples of some embodiments of the present disclosure are described above in detail with reference to accompanying figures of specific embodiments. Of course, it is not possible to describe all possible combinations of components or techniques, so those skilled in the art may make various modifications to the above-described embodiments without departing from the scope of this disclosure. I hope you understand. For example, although the above embodiments have been described with reference to portions of a 3GPP network, embodiments of the present disclosure are applicable to similar networks, such as successors to 3GPP networks, having similar functional components. It can be easily understood that

Accordingly, in particular, the terms 3GPP and associated or related terms used in the foregoing description and the enclosed drawings and any appended claims are now or in the future to be construed accordingly. It should be.

The present disclosure can be implemented in software, hardware, or software cooperating with hardware. Each functional block used in the description of each embodiment described above can be implemented by an LSI as an integrated circuit, and each process described in each embodiment may be controlled by the LSI. They may be formed individually as chips, or one chip may be formed to include some or all of the functional blocks. They may include data inputs and outputs coupled to them. An LSI in this specification may be called an IC, a system LSI, a super LSI, or an ultra LSI depending on the degree of integration. However, the technique of implementing integrated circuits is not limited to LSIs and may be implemented using dedicated circuits or general-purpose processors. In addition, FPGAs (Field Programmable Gate Arrays), which can be programmed after the LSI is manufactured, or reconfigurable processors, which can reconfigure the connections and settings of circuit cells located inside the LSI, may be used. .

In particular, modifications and other embodiments of the disclosed disclosure will come to mind to one skilled in the art having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, the disclosure should not be limited to the particular embodiments disclosed, and it should be understood that modifications and other embodiments are included within the scope of this disclosure. Although specific terms may be employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (14)

a receiver that receives the first channel busy rate among the first channel busy rate and the second channel busy rate in the resource pool measured by the communication device;
a circuit that performs congestion control based on the received first channel busy rate;
The circuit determines the number of times of transmission included in the radio parameter based on the first channel busy rate and the priority of the radio signal, and instructs the communication device with the radio parameter including the determined number of times of transmission;
the receiver receives the radio signal transmitted by the communication device using the radio parameter including the number of transmissions;
the first channel busy rate and the second channel busy rate are measured per component carrier;
base station. the first channel busy rate and the second channel busy rate comprise one or more channel busy rates for data channels and one or more channel busy rates for control channels;
A base station according to claim 1. The first channel busy rate and the second channel busy rate include one or more channel busy rates for PSSCH and one or more channel busy rates for PSCCH,
A base station according to claim 1. The first channel busy rate is a first channel busy rate for a first type of resource pool and the second channel busy rate is a second channel busy rate for a second type of resource pool. is the rate,
A base station according to claim 1. The first channel busy rate is a first channel busy rate related to a first resource pool used in a first transmission mode in which the base station allocates resources used for communication of the communication device.
A base station according to claim 1. The second channel busy rate is a second channel busy rate related to a second resource pool used in a second transmission mode in which the communication device voluntarily allocates resources used for communication,
A base station according to claim 5 . wherein the radio parameters include transmission power of transport blocks;
A base station according to claim 1. the reporting of the first channel busy percentage is triggered by an event;
A base station according to claim 1. the first channel busy rate is reported periodically;
A base station according to claim 1. each of the first channel busy rate and the second channel busy rate indicates a rate of the number of resources exceeding a threshold in the number of total resources;
A base station according to claim 1. each of the first channel busy rate and the second channel busy rate is calculated in a plurality of Physical Resource Blocks (PRBs);
A base station according to claim 1. receiving the first channel busy rate out of a first channel busy rate and a second channel busy rate in a resource pool measured by a communication device;
performing congestion control based on the received first channel busy rate;
determining the number of times of transmission included in the wireless parameter based on the first channel busy rate and the priority of the wireless signal;
instructing the communication device of the wireless parameters including the determined number of transmissions;
receiving the radio signal transmitted by the communication device using the radio parameter including the number of transmissions;
the first channel busy rate and the second channel busy rate are measured per component carrier;
Communication method. a process of receiving the first channel busy rate out of a first channel busy rate and a second channel busy rate in a resource pool measured by a communication device;
a process of performing congestion control based on the received first channel busy rate;
a process of determining the number of times of transmission included in a radio parameter based on the first channel busy rate and the priority of a radio signal, and instructing the communication device of the radio parameter including the determined number of times of transmission;
a process of receiving the wireless signal transmitted by the communication device using the wireless parameter including the number of transmissions;
to control the
the first channel busy rate and the second channel busy rate are measured per component carrier;
integrated circuit. circuitry for measuring a first channel busy rate and a second channel busy rate in the resource pool;
a transmitter that transmits the first channel busy rate to a base station;
the circuit uses the second channel busy rate and the priority of the radio signal to determine the number of transmissions included in the radio parameter;
the transmitter transmits the wireless signal to a second communication device using the wireless parameters including the number of transmissions;
a terminal;
a receiver that receives the first channel busy rate and the wireless signal;
a circuit that performs congestion control based on the received first channel busy rate;
a base station ;
the first channel busy rate and the second channel busy rate are measured per component carrier;
Communications system.

Images