JP6923698B2 - Wireless communication equipment, wireless communication methods and integrated circuits - Google Patents

Description

The present disclosure relates to the field of wireless communication, in particular to wireless communication devices, wireless communication methods and integrated circuits.

V2X can be used for vehicle-to-vehicle communication (V2V), vehicle-pedestrian communication (V2P), vehicle-infrastructure communication (V2I), or vehicle-network communication (V2N). means. Compared to the D2D (Device to Device) scenario, V2X has (1) a maximum of 120 km / h and even higher, which is relatively high speed, and (2) UEs (user devices) in the group. (User Equipment)) There are two different characteristics: relatively high density. Due to the above characteristics, especially the second characteristic, resource allocation has become one of the serious issues currently discussed in the 3GPP (the 3rd Generation Partner Project).

One non-limiting and exemplary embodiment provides a resource allocation mechanism in a wireless communication network that includes multiple wireless devices capable of communicating directly with each other, such as a V2X network.

In the first general aspect of the present disclosure, it is a wireless device in a wireless communication network including a plurality of wireless devices capable of directly communicating with each other, and is a processing circuit that multiplexes data and a scheduling allocation message into transmission information. And a transmitter that transmits transmission information to other wireless devices in the wireless communication network within the scheduling allocation period, and the scheduling allocation message is a data transmission resource in the above scheduling allocation period or a previous scheduling allocation period. A radio device used for notification is provided.

A second general aspect of the present disclosure is a wireless device in a communication network that includes a plurality of wireless devices capable of directly communicating with each other, and receives transmission information from another wireless device in the communication network within a scheduling allocation period. The receiver is provided with a processing circuit that demultiplexes the scheduling allocation message from the transmission information and decodes the data from the transmission information based on the scheduling allocation message, and the scheduling allocation message is the above-mentioned scheduling allocation period or the previous scheduling allocation period. A radio device is provided that is used to notify the data transmission resource in.

A third general aspect of the present disclosure is a wireless communication method of wireless devices in a wireless communication network including a plurality of wireless devices capable of directly communicating with each other, wherein the communication method is a data and a scheduling allocation message. The scheduling allocation message includes the step of multiplexing to the transmission information and the step of transmitting the transmission information to another radio device in the communication network within the scheduling allocation period, and the scheduling allocation message is the above-mentioned scheduling allocation period or the previous scheduling allocation period. A wireless communication method used for notifying data transmission resources in is provided.

A fourth general aspect of the present disclosure is a method of wireless communication of wireless devices in a communication network including a plurality of wireless devices capable of directly communicating with each other, wherein transmission information is transmitted within a scheduling allocation period to other wireless devices in the communication network. The scheduling allocation message includes the step of demultiplexing the scheduling allocation message from the transmission information and decoding the data from the transmission information based on the scheduling allocation message, and the scheduling allocation message is the schedule allocation period or the previous scheduling. A wireless communication method is provided that is used to notify data transmission resources within the allotted period.

Note that general or specific embodiments can 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 benefits may be obtained individually by various embodiments and features herein and drawings that do not have to be provided in full to obtain one or more of such benefits and / or benefits. ..

The aforementioned features and other features of the present disclosure, together with the accompanying drawings, will become more fully apparent from the following description and the appended claims. With the understanding that these drawings depict only some embodiments of the present disclosure and therefore should not be considered a limitation of their scope, the present disclosure is made by using the accompanying drawings. It will be explained more concretely and in detail.

Schematic diagram showing a resource allocation mechanism in the wireless device according to the embodiment of the present disclosure. A block diagram schematically showing a wireless device according to an embodiment of the present disclosure. Schematic diagram showing another resource allocation mechanism in the wireless device according to the embodiment of the present disclosure. Schematic diagram showing a further resource allocation mechanism in the wireless device according to the embodiment of the present disclosure. Schematic diagram showing the position of the multiplexed SA message in the time domain according to the embodiment of the present disclosure. Schematic diagram showing the position of the multiplexed SA message in the frequency domain according to the embodiment of the present disclosure. A block diagram schematically showing a wireless device according to another embodiment of the present disclosure. A flowchart schematically showing a wireless communication method according to an embodiment of the present disclosure. A flowchart schematically showing a wireless communication method according to another embodiment of the present disclosure.

In the following detailed description, reference is made to the accompanying drawings forming a part thereof. In drawings, similar symbols generally identify similar components unless the context dictates otherwise. It is readily understood that aspects of the present disclosure may be arranged, replaced, combined and designed in a wide variety of different configurations, all of which are expressly articulated and form part of the present disclosure. There will be.

In the V2X communication network, as described above, there may be a large number of relatively faster wireless devices such as vehicles in the group. On the one hand, many vehicles may collide within the same resource pool, and on the other hand, due to half-duplex constraints, other devices cannot be listened to.

In the embodiments of the present disclosure, a wireless device applied within a wireless communication network including a plurality of wireless devices capable of directly communicating with each other, such as a V2X communication network or a D2D communication network, is provided. The radio device according to the embodiment of the present disclosure is semi-static or semi-persistent scheduling (SPS) in LTE (Long Term Evolution) in consideration of a potentially congested Scheduling Assignment (SA) resource pool. Semi-static or semi-persistent scheduling)) A mechanism similar to the mechanism is adopted. This is referred to herein as the "SPS like mechanism". Hereinafter, the details of the SPS-like mechanism will be described with reference to FIG.

FIG. 1 is a schematic view showing a resource allocation mechanism in the wireless device according to the embodiment of the present disclosure. As shown in FIG. 1, there are a plurality of SA periods. In the first SA period, the SA message represented by the polka dot block is transmitted and the associated data represented by the diagonal block is transmitted accordingly. SA messages are used to signal the start of SPS-like transmission. In an intermediate SA period, such as the second SA period, there are no SA messages transmitted. In the final SA period, an SA message is sent to notify the end of SPS-like transmission. Further, the SA message transmitted in the first SA period is used to notify the data transmission resource in each of the plurality of SA periods.

FIG. 1 shows a first example of a resource allocation mechanism. In the first SA period, an SA message is sent to notify the start of SPS-like transmission, and in the last SA period, another SA message is sent to notify the end of SPS-like transmission, and an intermediate SA. No SA message is sent during the period. In the second example (not shown), in the first SA period, an SA message is transmitted to notify information related to SPS-like transmission such as a period, and in an SA period other than the first SA period. No SA message is sent. Further, the SA message transmitted in the first SA period is further used to notify the data transmission resource in each of the plurality of SA periods.

In any of the above examples, since the SA message is not transmitted in a part of the SA period (in the first example, the intermediate SA period, and in the second example, the SA period other than the first SA period), the SA message is generally not transmitted. A large number of SA messages can be suppressed during SPS-like transmission. As a result, SA collisions can be reduced, and the half-duplex problem in the SA resource pool can be alleviated. This means that the UE or vehicle has more opportunities to receive messages from other UEs or vehicles.

However, the topology of the network can change frequently. In particular, in the V2X scenario, in the SPS-like transmission as shown in FIG. 1, the radio device may frequently join or leave the network, so that the radio newly joins the network during the SA period in which the SA message is not transmitted. The device is unable to decrypt the data due to the lack of SA messages.

In order to further solve the above problems, another embodiment of the present disclosure provides a wireless device applied within a wireless communication network including a plurality of wireless devices capable of directly communicating with each other, such as a V2X communication network.

FIG. 2 is a block diagram schematically showing a wireless device according to the embodiment of the present disclosure.

The wireless device 200 transmits the transmission information to another wireless device in the wireless communication network within the scheduling allocation period and the processing circuit 210 capable of operating to multiplex the data and the scheduling allocation message into the transmission information. A transmitter 220 that can operate to transmit can be provided. Scheduling allocation messages can be used to inform data transmission resources during the scheduling allocation period. Alternatively, scheduling allocation messages can also be used to inform data transmission resources during previous scheduling allocation periods. This requires the receiving radio device (discussed in detail with reference to FIG. 3) to buffer and decrypt the data after it has successfully received the scheduling allocation message within the next scheduling allocation period. Means that.

The wireless device 200 according to the present invention varies depending on the CPU (Central Processing Unit) 230 and the CPU 230 that optionally execute related programs for processing various data and control operations of each unit in the wireless device 200. ROM (Read Only Memory) 240 for storing various programs necessary for performing various processes and controls, and RAM (Random Access Memory) 250 for storing intermediate data temporarily generated in the process and control process by the CPU 230. , And / or may include a storage device 260 for storing various programs, data, and the like. The processing circuit 210, transmitter 220, CPU 230, ROM 240, RAM 250 and / or storage device 260 and the like are interconnected via data and / or command bus 270, and signals can be transferred between them.

Each of the above components does not limit the scope of the present disclosure. According to the embodiments of the present disclosure, the functions of the processing circuit 210 and the transmitter 220 may be performed by hardware, and the CPU 230, ROM 240, RAM 250 and / or storage device 260 may not be required. Alternatively, the functions of the processing circuit 210 and the transmitter 220 may also be performed by functional software in combination with the CPU 230, ROM 240, RAM 250, and / or storage device 260 and the like.

Hereinafter, the scheduling allocation mechanism adopted by the wireless device 200 will be described with reference to FIG. FIG. 3 is a schematic diagram showing another resource allocation mechanism in the wireless device according to the embodiment of the present disclosure.

As shown in FIG. 3, there are a plurality of SA periods similar to those in FIG. The difference between this embodiment and the embodiment shown in FIG. 1 is that there is a dedicated SA area for transmitting an SA message in FIG. 1, and all subframes within the scheduling allocation period potentially transmit data. In the present embodiment shown in FIG. 3, the dedicated SA region does not have to exist.

Further, the difference between the present embodiment and the embodiment shown in FIG. 1 is that the SA message is multiplexed into the transmission information together with the data in FIG. This is indicated by a block filled with black squares. The transmitted information is transmitted to another wireless device within the SA period, for example, the second SA period as shown in FIG.

Multiplexing of SA messages and data can be directed by a radio device via a broadcast channel such as a Physical Sidelink Broadcast Channel (PSBCH). The radio may be this radio or other radio in a communication network as long as it can function as a synchronization source.

In a possible embodiment, the SA message is used to notify the data transmission resource in the current SA period when the current data transmission resource (eg, subframe) is allowed to transmit transmission information. Will be done.

In another possible embodiment, if the current subframe is not allowed to transmit transmit information, the data will be transmitted first in a previous SA period, for example, in the first SA period of FIG. obtain. Then, in a subsequent SA period, such as the second SA period of FIG. 3, the multiplexed SA message is transmitted. In such cases, the SA message is used to inform the data transmission resource during the previous SA period. Several subframes may be buffered for the receiving radio. The data may be decrypted after the multiplexed SA message is detected. The start of data can be signaled by a multiplexed SA message. In such an embodiment, the wireless device can quickly transmit data and reduce latency.

FIG. 4 is a schematic diagram showing a further scheduling allocation mechanism according to the embodiment of the present disclosure. The scheduling allocation mechanism of FIG. 4 also employs an SPS-like mechanism as described with reference to FIG. The difference between this embodiment and the embodiment shown in FIG. 1 is that the SA message transmitted in the intermediate SA period of FIG. 1 does not exist, whereas in the present embodiment, it is multiplexed with the data in the intermediate SA period. The converted SA message is to be transmitted. Note that the transmitted information is transmitted during the intermediate SA period as shown in FIG. 4, but in other examples not shown, the transmitted information may be transmitted during both the intermediate SA period and the final SA period. I want to be. That is, the SA message is multiplexed into transmission information together with the data as shown in the figure, and the transmission information is transmitted in the data transmission resource of at least one SA period other than the first SA period. Each of the plurality of SA periods includes a data area. The data transmission resources within each data area are indicated by SA messages.

SA messages can be multiplexed with data in a variety of ways. For example, the processing circuit can embed the resource element of the SA message in the data resource of the physical layer to form the transmission information. Here, the associated resource element of the data resource is punctured. In another example, the processing circuit maps the SA message to a portion of the data transmission resource, such as one slot in the subframe, and maps the data to the other data transmission resource, such as the other slot in the subframe. The transmission information can be formed by mapping to the part of. The code rate of the data is matched within other parts that transmit the data, such as the other slots above.

Further, as shown in FIG. 4, the first SA period includes an SA area in which another SA message for notifying the data transmission resource is transmitted. Specifically, a field or some fields for notifying parameters related to SPS-like transmission, for example, for notifying the start of SPS-like transmission, the period of SPS-like transmission, the time / frequency resource of SPS, and the like. The combination of fields can be added in the other SA messages mentioned above. Alternatively, a different RNTI (Radio Network Temporary Identity) can be used to notify the SPS-like transmission.

In the following, there may be several options regarding the format of the data in the data area and the multiplexed SA message, which may be referred to as the multiplexed SA message. In the first option, the format of the multiplexed SA message may be the same as the format of the other SA messages transmitted during the first SA period. This may be hereinafter referred to as a "normal SA message". For example, Sidelink Control Information (SCI) format 0 can be reused.

In the second option, the format of the multiplexed SA message may be simpler than the format of a normal SA message. For example, resource allocation fields in a normal SA message can be deleted or reduced in size because the location of the multiplexed SA message can reflect the location of the data.

In another example, the timing advance field of a normal SA message can be removed because the data and the multiplexed SA message are processed within the same data resource, i.e. the same timing advance is used. In particular, the transmitter is based on the timing of reception from other wireless devices in both eNodeB scheduling transmissions such as mode 1 transmissions in D2D networks and UE autonomous scheduling transmissions such as mode 2 transmissions in D2D networks. It can be made operational to transmit transmission information using downlink timing without advance. Alternatively, in the case of eNodeB scheduling transmission, if V2X is operated on a cellular carrier, timing advance may be applied during the first SA period.

As a further example, as will be described later with reference to FIG. 5, the multiplexed SA message can reflect a specific Time-Resource Pattern (T-RPT) index. Therefore, the time resource pattern (T-RPT) field in a normal SA message can be removed or reduced in size.

SPS-like transmission may be enabled or disabled by the radio device or may be directed through a broadcast channel such as PSBCH. The radio may be this radio or other radio in a communication network as long as it can function as a synchronization source.

Furthermore, transmission characteristics such as MCS (Modulation and Coding Scheme) can be adapted by instructing the multiplexed SA message.

Further, in SPS-like transmission, when transmission from a radio device to another radio device is autonomously scheduled by the radio device, the data transmission resource may be selected by the radio device once during the first SA period. can. That is, in the case of UE autonomous scheduling transmission, the wireless device can transmit a normal SA message within the first SA period and a multiplexed SA message within the subsequent SA period. The radio device only selects a resource (SA or data) once during the first SA period. The resource is repeated within the subsequent SA period.

Alternatively, the data transmission resource may be selected by the base station if transmission from one radio device to another radio device is scheduled by the base station. That is, in the case of scheduling transmission based on eNodeB, the radio device can transmit a normal SA message within the first SA period and a multiplexed SA message within the subsequent SA period. However, unlike the above case, resource selection follows the eNodeB guidance. Further, in the embodiment, the time position for transmitting the multiplexed SA message within the SA period may be limited. FIG. 5 is a diagram schematically showing the position of the multiplexed SA message in the time domain according to the embodiment of the present disclosure. As shown in FIG. 5, the time position of the multiplexed SA message may be limited to the first few "1" subframes indicated by the second T-RPT bitmap. In particular, in FIG. 5, the value of the bitmap is, for example, "11100100". This means that the shaded subframes # 1, # 2, # 3, and # 6 are available for transmission. As shown in FIG. 5, such a bitmap is repeated until the end of the SA period, with the truncated bitmap used for the last few subframes. The use of bitmaps is common to all UEs so that they know when the receiving and transmitting radios apply the first bitmap, the second bitmap, and so on. Those skilled in the art should understand that the bitmap values shown in FIG. 5 are merely examples, and that other bitmap values are possible.

As shown in FIG. 5, the starting subframe for applying the T-RPT pattern is matched between the multiplexed SA message and the data. Since the timing of applying the T-RPT pattern is cell-specific or group-specific, the transmitting and receiving radios have the same understanding of the time to transmit a multiplexed SA message. The transmitter can operate to transmit transmission information in a part of the subframe to which the time resource pattern (T-PRT) is applied within the SA period. Some of the subframes can be specified, predefined, or configured depending on the resource allocation mode (scheduled by the eNodeB or autonomously selected by the UE). Since the receiver does not know the value of the bitmap in advance, it estimates one value of the bitmap (time resource pattern), for example, "11100100", and tries to detect the multiplexed SA message. In order to reduce the complexity of decoding, it is possible to limit some of the T-RPT patterns that transmit the multiplexed SA message.

Further, in the frequency domain, the multiplexed SA message can be transmitted in various ways. As an example, the multiplexed SA message may be transmitted in one PRB within a subframe. As another example, the multiplexed SA message may be repeatedly transmitted in all assigned PRBs within the subframe. As a further example, the same multiplexed SA message may be transmitted across several PRBs within a subframe.

Further, in the embodiment, the frequency position for transmitting the multiplexed SA message within the SA period may also be limited. FIG. 6 is a diagram schematically showing the position of the multiplexed SA message in the frequency domain according to the embodiment of the present disclosure. As an example, the frequency position of the multiplexed SA message may be linked to the T-RPT pattern. For example, when the T-RPT pattern is "11100100", the first PRB (Physical Resource Block) is used to transmit the multiplexed SA message. When the T-RPT pattern is "11000000", a third PRB is used to transmit the multiplexed SA message. That is, different T-RPT patterns are linked to different frequency positions in the multiplexed SA message. Therefore, the transmitter can operate to transmit transmission information within the PRB of the data transmission resource. The PRB index is associated with the T-RPT index of the data transmission resource.

In the case of a receiving radio, the receiving radio can estimate a particular T-RPT pattern and attempt to detect the multiplexed SA message. When the multiplexed SA message is detected, the receiving radio device also knows the T-RPT pattern accordingly. In FIG. 6, candidate 1 is linked to T-RPT pattern 1 and candidate 2 is linked to T-RPT pattern 2. For transmitting radios, the frequency resource allocation should include the corresponding linked PRB to transmit the multiplexed SA message. Thus, in such an example, the complexity of the receiving radio may be reduced, but there may be some restrictions on resource allocation in the frequency domain.

As another example, the frequency position of the multiplexed SA message may be fixed regardless of the T-RPT pattern. That is, the transmitter can operate to transmit the transmission information in the fixed PRB of the data transmission resource. For example, PRBs 1 and 13 can always be potential candidates for transmitting a multiplexed SA message. In such cases, the data resource should include one of the candidate PRBs.

In this embodiment, the multiplexed SA message is described in an SPS-like resource allocation scenario. However, the present disclosure is not limited to this, and may be applied to dynamic resource allocation, or even to a scenario without an SA resource pool as shown in FIG. Please note.

Also note that in any of the above figures, the SA channel used to transmit one SA message or the data channel used to transmit one transport block is repeated. Certain hopping rules may be applied between repeating SA channels or repeating data channels. For example, in FIG. 4, the SA channel is repeated twice, the data channel is repeated four times, and the multiplexed SA message is transmitted within the four repeating data channels. However, this is only an example, and the present disclosure is not limited to this. For those skilled in the art, SA channels and data channels may be repeated a number of times other than those shown in the figure, and multiplexed SA messages may be transmitted on any one or more repeating data channels. Please understand that.

The resource allocation mechanism described above with reference to FIGS. 3-6 is both a transmission scheduled by eNodeB, such as mode 1 transmission in a D2D network, and a UE autonomous transmission, such as mode 2 transmission in a D2D network. Can be applied to. The SA resource pool can be relaxed by multiplexing the SA message with the data and transmitting the SA message multiplexed with the data within the data channel, and newly joining UEs can use other than the first SA period. Do not miss any data transmitted during any SA period.

FIG. 7 is a block diagram schematically showing a wireless device according to the embodiment of the present disclosure.

The radio device 700 demultiplexes the schedule allocation message from the transmission information and the receiver 710 that can operate to receive the transmission information from other radio devices in the communication network within the scheduling allocation period, and is based on the scheduling allocation message. A processing circuit 720 that can operate so as to decode data from the transmitted information can be provided. Scheduling allocation messages can be used to inform data transmission resources during the scheduling allocation period. Alternatively, scheduling allocation messages can also be used to inform data transmission resources during previous scheduling allocation periods.

The wireless device 700 according to the present invention varies depending on the CPU (Central Processing Unit) 730 and the CPU 730 that optionally execute related programs for processing various data and control operations of each unit in the wireless device 700. ROM (Read Only Memory) 740 that stores various programs necessary for performing various processes and controls, and RAM (Random Access Memory) 750 that stores intermediate data that is temporarily generated in the process and control process by the CPU 730. , And / or may include a storage device 760 that stores various programs, data, and the like. The receiver 710, processing circuit 720, CPU 730, ROM 740, RAM 750 and / or storage device 760 and the like are interconnected via data and / or command bus 770, and signals can be transferred between them.

Each of the above components does not limit the scope of the present disclosure. According to the embodiments of the present disclosure, the functions of the receiver 710 and the processing circuit 720 may be performed by hardware, and the CPU 730, ROM 740, RAM 750 and / or storage device 760 may not be required. Alternatively, the functions of the receiver 710 and the processing circuit 720 may also be performed by functional software in combination with the CPU 730, ROM 740, RAM 750, and / or storage device 760 and the like.

In the embodiment, the data transmission resource is in the data area of the scheduling allocation period including the SA area and the data area. The processing circuit can operate to first attempt blind decoding of the scheduling allocation message from the SA region. The processing circuit can then operate to blindly decode the SA message from the data area. After decoding the SA message, the data is decoded accordingly.

In other embodiments, the data transmission resource is within at least one SA period other than the first SA period. Each SA period includes a data area, and the data transmission resources within each data area are indicated by SA messages. That is, the SPS-like resource allocation as described above is applied.

In a further embodiment, the processing circuit indicates that SA messages and data are not multiplexed over a broadcast channel, such as PSBCH, or that SPS-like resource allocation is not enabled through the broadcast channel. If indicated, it can act to decode the SA message from the SA region.

In a further embodiment, when SPS-like resource allocation is enabled, other SA messages (normal SA messages as described above) are transmitted during the first SA period. For a radio device that has already detected a normal SA message notifying SPS-like resource allocation in the first SA period, the radio device already knows the SPS-like transmission from the beginning based on the normal SA message in the SA resource pool. Therefore, it may not be necessary to detect or monitor multiplexed SA messages during subsequent SA periods. For radio devices that newly join the subsequent SA period, the radio device first detects the normal SA message in the SA resource pool and then detects the multiplexed SA message in the data resource pool as described above. Therefore, the wireless device according to the present embodiment allows the newly participating wireless device to still correctly decode the SPS-like transmission data.

FIG. 8 is a flowchart showing the wireless communication method 800 according to the embodiment of the present disclosure.

As shown in FIG. 8, first, in block 810, the data is multiplexed into transmission information together with the scheduling allocation message. Next, in block 820, the transmission information is transmitted to another radio device in the communication network within the scheduling allocation period.

The scheduling allocation message can be used to notify the data transmission resource in the above scheduling allocation period or the previous scheduling allocation period.

The details of the wireless communication method have been described above with reference to the wireless device, and are not repeated here.

FIG. 9 is a flowchart showing another wireless communication method 900 according to the embodiment of the present disclosure.

As shown in FIG. 9, first, in block 910, transmission information from another wireless device in the communication network is received during the scheduling allocation period.

Next, in block 920, the scheduling allocation message is demultiplexed from the transmission information. At block 930, data is decoded from the transmitted information based on the scheduling allocation message.

The details of the wireless communication method have been described above with reference to the wireless device, and are not repeated here.

By the wireless communication method shown in FIG. 8 or 9, the newly participating UE does not miss any data transmitted in any SA period other than the first SA period.

The present disclosure can be realized by software, hardware, or software linked with hardware. Each functional block used in the description of each embodiment is realized as an LSI which is an integrated circuit, and each process described in each embodiment may be controlled by the LSI. The LSI may be composed of individual chips, or may be composed of one chip so as to include a part or all of functional blocks. The LSI may include data input and output. LSIs may be referred to as ICs, system LSIs, super LSIs, and ultra LSIs depending on the degree of integration. The method of making an integrated circuit is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. Further, an FPGA (Field Programmable Gate Array) that can be programmed after the LSI is manufactured, or a reconfigurable processor that can reconfigure the connection or setting of the circuit cells inside the LSI may be used.

In the first general aspect of the present disclosure, it is a wireless device in a wireless communication network including a plurality of wireless devices capable of directly communicating with each other, and is a processing circuit that multiplexes data and a scheduling allocation message into transmission information. And a transmitter that transmits transmission information to other wireless devices in the wireless communication network within the scheduling allocation period, and the scheduling allocation message is a data transmission resource in the above scheduling allocation period or a previous scheduling allocation period. A radio device is provided that is used to notify the user.

According to the radio device of the first embodiment, the data transmission resource exists in at least one scheduling allocation period other than the first scheduling allocation period among the plurality of scheduling allocation periods, and the data transmission resource exists in the plurality of scheduling allocation periods. Each includes a data area, and data transmission resources within each data area can be notified by a scheduling allocation message.

According to the radio device of the first embodiment, the first scheduling allocation period can include a scheduling allocation area to which other scheduling allocation messages for allocating data transmission resources are transmitted.

According to the radio device of the first embodiment, the other scheduling allocation message includes a resource allocation field, a timing advance field, and a time resource pattern (T-RPT) field, and at least one of these fields. Is not included or is reduced in size in the scheduling allocation message.

According to the radio device of the first embodiment, when transmission from the radio device to another radio device is autonomously scheduled by the radio device, the data transmission resource is the first of a plurality of scheduling allocation periods. The data transmission resource can be selected by the base station if it can be selected by the radio device once during the scheduling allocation period and the transmission from the radio device to another radio device is scheduled by the base station.

According to the wireless device according to the first embodiment, the transmitter transmits transmission information using downlink timing that is based on reception timing from another wireless device and does not have timing advance. Can work with.

According to the radio device of the first embodiment, the transmitter can operate to transmit transmission information in a part of the subframe to which the time resource pattern is applied during the scheduling allocation period, and the part of the subframe. Is specified, predefined, or set.

According to the radio device of the first embodiment, the transmitter can operate to transmit transmission information within the physical resource block (PRB) of the data transmission resource, and the index of the PRB is the index of the data transmission resource. Associated with the T-RPT index, or the transmitter can operate to transmit transmission information within a fixed PRB of the data transmission resource.

According to the wireless device of the first embodiment, the processing circuit can multiplex the scheduling allocation message and the data into the transmission information by any of the following methods. That is, the processing circuit embeds the resource element of the scheduling allocation message in the data transmission resource at the physical layer to form transmission information, where the related resource element of the data transmission resource is punctured. The processing circuit maps the scheduling allocation message to one part of the data transmission resource and maps the data to the other part of the data transmission resource to form the transmission information, where the data coding rate transmits the data. Matched within other parts.

According to the second embodiment of the present disclosure, a wireless device in a communication network including a plurality of wireless devices capable of directly communicating with each other, and transmitting information within a scheduling allocation period, another wireless device in the communication network. It is provided with a receiver that receives from the receiver and a processing circuit that demultiplexes the scheduling allocation message from the transmission information and decodes the data from the transmission information based on the scheduling allocation message. A radio device is provided that is used to notify the data transmission resource during the allotted period.

According to the radio device of the second embodiment, the data transmission resource may exist in the data area of the scheduling allocation period including the scheduling allocation area and the data area. The processing circuit can operate to first attempt blind decoding of the scheduling allocation message from the scheduling allocation area and then blindly decode the scheduling allocation message from the data area.

According to the radio device of the second embodiment, the processing circuit notifies that the scheduling allocation message and data are not multiplexed via the broadcast channel transmitted by other radio devices in the radio communication network. If so, the scheduling allocation message can be decrypted from the scheduling allocation area.

According to the radio device of the second embodiment, the data transmission resource exists in at least one scheduling allocation period other than the first scheduling allocation period among the plurality of scheduling allocation periods, and the data transmission resource exists in the plurality of scheduling allocation periods. Each can include a data area, and the data transmission resources within each data area can be notified by a scheduling allocation message.

According to the third embodiment of the present disclosure, the wireless communication method is applied to a wireless communication network including a plurality of wireless devices capable of directly communicating with each other, and the communication method includes data and a scheduling allocation message. The scheduling allocation message includes the step of multiplexing to the transmission information and the step of transmitting the transmission information to another radio device in the communication network in the scheduling allocation period, and the scheduling allocation message is in the above scheduling allocation period or the previous scheduling allocation period. A wireless communication method used to notify the data transmission resource is provided.

According to the fourth embodiment of the present disclosure, it is a wireless communication method applied to a wireless device in a communication network including a plurality of wireless devices capable of directly communicating with each other, and transmission information is transmitted within the communication network within a scheduling allocation period. The scheduling allocation message includes the step of receiving from another wireless device and the step of demultiplexing the scheduling allocation message from the transmission information and decoding the data from the transmission information based on the scheduling allocation message. Alternatively, a wireless communication method used to notify the data transmission resource in the previous scheduling allocation period is provided.

According to a fifth embodiment of the present disclosure, a wireless device in a wireless communication network including a plurality of wireless devices capable of directly communicating with each other, which is a first scheduling allocation period among the plurality of scheduling allocation periods. A radio that includes a transmitter that sends a scheduling allocation message within the scheduling allocation area to other radios in the wireless communication network, and the scheduling allocation message is used to inform data transmission resources during each scheduling allocation period. Equipment is provided.

According to a sixth embodiment of the present disclosure, a wireless device in a wireless communication network including a plurality of wireless devices capable of directly communicating with each other, which is a first scheduling allocation period among the plurality of scheduling allocation periods. A radio that includes a receiver that receives scheduling allocation messages in the scheduling allocation area from other radios in the wireless communication network, and scheduling allocation messages are used to inform data transmission resources during each scheduling allocation period. Equipment is provided.

According to a seventh embodiment of the present disclosure, it is a wireless communication method applied to a wireless device in a wireless communication network including a plurality of wireless devices capable of directly communicating with each other, and is the first of a plurality of scheduling allocation periods. The scheduling allocation message includes a step of transmitting a scheduling allocation message within the scheduling allocation area of one scheduling allocation period to other wireless devices in the wireless communication network, and the scheduling allocation message informs the data transmission resource in each scheduling allocation period. The wireless communication method used is provided.

According to an eighth embodiment of the present disclosure, it is a wireless communication method applied to wireless devices in a wireless communication network including a plurality of wireless devices capable of directly communicating with each other, and is the first of a plurality of scheduling allocation periods. Including the step of receiving a scheduling allocation message in the scheduling allocation area of one scheduling allocation period from another radio device in the wireless communication network, the scheduling allocation message is for notifying the data transmission resource in each scheduling allocation period. The wireless communication method used is provided.

In addition, embodiments of the present disclosure may also provide integrated circuits that include modules (s) for performing the steps (s) of each of the above communication methods. Further, an embodiment of the present invention provides a computer-readable storage medium that stores a computer program including a program code that executes the steps (s) of each of the above communication methods when executed on a computing device. You can also do it.

This disclosure is intended to be variously modified or modified by one of ordinary skill in the art based on the description presented herein and known art without departing from the content and scope of this disclosure. It should be noted that any changes and applications fall within the scope of the claims to be protected. Further, the components of the above embodiment may be arbitrarily combined as long as the disclosed contents are not deviated.

Claims (10)

Among a plurality of sub-frame data in the direct communication is assigned, in one or more sub-frames, and data of the direct communication, a receiver for receiving control information for notifying the plurality of sub-frames,
A control circuit that decodes the direct communication data using the control information, and
Equipped with
When the direct communication data and the control information are multiplexed into the first subframe of the plurality of subframes , the control information does not include the timing advance field.
When the direct communication data and the control information are not multiplexed into the same subframe of the plurality of subframes , the control information includes a timing advance field.
Wireless communication device. The direct communication data and the control information are arranged in a plurality of PRBs in the first subframe.
The wireless communication device according to claim 1. The plurality of PRBs use different frequencies,
The wireless communication device according to claim 2. The plurality of subframes are instructed from the base station to the wireless communication device using a bitmap, and each bit of the bitmap indicates whether or not the corresponding subframe is used for transmitting the data of the direct communication. ,
The wireless communication device according to claim 1. The bitmap for the sub-frame in correspondence exceeds the length, by the repeat pattern of the bitmap Succoth, correspondence between the each bit of the bitmap subframe is performed,
The wireless communication device according to claim 4. When the direct communication data and the control information are multiplexed into the first subframe of the plurality of subframes , the control information does not include the time resource pattern information.
When the direct communication data and the control information are not multiplexed into the same subframe of the plurality of subframes, the control information includes time resource pattern information.
The wireless communication device according to claim 1. Among a plurality of sub-frame data in the direct communication is assigned, in one or more sub-frames, a processing step of receiving the data of the direct communication, the control information for notifying the plurality of sub-frames,
A processing step of decoding the direct communication data using the control information, and
Equipped with
When the direct communication data and the control information are multiplexed into the first subframe of the plurality of subframes , the control information does not include the timing advance field.
When the direct communication data and the control information are not multiplexed into the same subframe of the plurality of subframes , the control information includes a timing advance field.
Wireless communication method. When the direct communication data and the control information are multiplexed into the first subframe of the plurality of subframes , the control information does not include the time resource pattern information.
When the direct communication data and the control information are not multiplexed into the same subframe of the plurality of subframes , the control information includes time resource pattern information.
The wireless communication method according to claim 7. A process of receiving the direct communication data and control information for notifying the plurality of subframes in one or more subframes among a plurality of subframes to which direct communication data is assigned.
The process of decoding the direct communication data using the control information, and
Control and
When the direct communication data and the control information are multiplexed into the first subframe of the plurality of subframes , the information does not include the timing advance field.
When the direct communication data and the control information are not multiplexed into the same subframe of the plurality of subframes , the control information includes a timing advance field.
Integrated circuit. When the direct communication data and the control information are multiplexed into the first subframe of the plurality of subframes , the control information does not include the time resource pattern information.
When the direct communication data and the control information are not multiplexed into the same subframe of the plurality of subframes, the control information includes time resource pattern information.
The integrated circuit according to claim 9.

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