WO2022062314A1 - 通信方法、装置及设备 - Google Patents
通信方法、装置及设备 Download PDFInfo
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Definitions
- the present application relates to the field of communication technologies, and in particular, to a communication method, apparatus, and device.
- D2D device-to-device
- the terminal device can select resources in the resource pool, and perform data transmission according to the selected resources.
- the resources in the resource pools of multiple terminal devices may overlap, so that the resources selected by one terminal device may be the same as the resources selected by other terminal devices, resulting in resource conflict and greater communication interference.
- Embodiments of the present application provide a communication method, apparatus, and device to reduce communication interference.
- an embodiment of the present application provides a communication method, including:
- the first terminal device determines the first time period
- the first terminal device sends a first resource set to the second terminal device within the first time period, where the first resource set is used for resource selection by the second terminal device.
- an embodiment of the present application provides a communication method, including:
- the second terminal device receives the first resource set from the first terminal device within the first time period
- the second terminal device performs resource selection according to the first resource set.
- an embodiment of the present application provides a communication device, including a processing module and a sending module, wherein,
- the processing module is used to determine the first time period
- the sending module is configured to send a first resource set to a second terminal device within the first time period, where the first resource set is used for resource selection by the second terminal device.
- an embodiment of the present application provides a communication device, including a receiving module and a processing module, wherein,
- the receiving module is configured to receive the first resource set from the first terminal device within the first time period
- the processing module is configured to perform resource selection according to the first resource set.
- an embodiment of the present application provides a terminal device, including: a transceiver, a processor, and a memory;
- the memory stores computer-executable instructions
- the processor executes the computer-executable instructions stored in the memory, so that the processor executes the communication method according to any one of the first aspects.
- an embodiment of the present application provides a terminal device, including: a transceiver, a processor, and a memory;
- the memory stores computer-executable instructions
- the processor executes the computer-executable instructions stored in the memory, so that the processor executes the communication method according to any one of the second aspects.
- an embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement any one of the first aspect The communication method described in item.
- embodiments of the present application provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement any one of the second aspect The communication method described in item.
- the first terminal device can determine the first time period, and send the first resource set to the second terminal device within the first time period, so that the second terminal device can receive the first resource set in time.
- a set of resources, and the first set of resources is referred to during resource selection, thereby reducing the probability of resource conflict between the second terminal device and other terminal devices, and improving the utilization rate of resources.
- FIG. 1A is a schematic diagram of unicast transmission provided by an embodiment of the present application.
- FIG. 1B is a schematic diagram of multicast transmission provided by an embodiment of the present application.
- 1C is a schematic diagram of multicast transmission provided by an embodiment of the present application.
- FIG. 2 is a schematic diagram of a frame structure provided by an embodiment of the present application.
- 3A is a schematic diagram of a network coverage situation provided by an embodiment of the present application.
- 3B is a schematic diagram of another network coverage situation provided by an embodiment of the present application.
- 3C is a schematic diagram of another network coverage situation provided by an embodiment of the present application.
- 4A is a schematic diagram of a data transmission scenario provided by an embodiment of the present application.
- 4B is a schematic diagram of a data transmission scenario provided by an embodiment of the present application.
- FIG. 5 is a schematic flowchart of a communication method provided by an embodiment of the present application.
- FIG. 6 is a schematic flowchart of another communication method provided by an embodiment of the present application.
- FIG. 7 is a schematic diagram of resource selection provided by an embodiment of the present application.
- FIG. 8 is a schematic flowchart of another communication method provided by an embodiment of the present application.
- FIG. 9 is a schematic flowchart of still another communication method provided by an embodiment of the present application.
- FIG. 10 is a schematic time sequence diagram provided by an embodiment of the present application.
- FIG. 11 is a schematic flowchart of another communication method provided by an embodiment of the present application.
- FIG. 13 is a schematic flowchart of another communication method provided by an embodiment of the present application.
- FIG. 14 is a schematic structural diagram of a communication device according to an embodiment of the present application.
- FIG. 15 is a schematic structural diagram of another communication apparatus provided by an embodiment of the present application.
- FIG. 16 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
- Terminal equipment It is a device with wireless transceiver function. Terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites, etc.).
- the terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal device, industrial control ( Wireless terminals in industrial control, in-vehicle terminal equipment, wireless terminals in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, transportation security Wireless terminal equipment in (transportation safety), wireless terminal equipment in smart city, wireless terminal equipment in smart home (smart home), wearable terminal equipment, etc.
- a virtual reality virtual reality
- AR augmented reality
- industrial control Wireless terminals in industrial control, in-vehicle terminal equipment, wireless terminals in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, transportation security Wireless terminal equipment in (transportation safety), wireless terminal equipment in smart city, wireless terminal equipment in smart home (smart home), wearable terminal equipment, etc.
- the terminal equipment involved in the embodiments of this application may also be referred to as terminal, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, and remote station , remote terminal equipment, mobile equipment, UE terminal equipment, wireless communication equipment, UE proxy or UE device, etc.
- Terminal devices can also be stationary or mobile.
- Network device It is a device with wireless transceiver function. Including but not limited to: an evolved base station (Evolutional Node B, eNB or eNodeB) in long term evolution (LTE), a base station (gNodeB or gNB) or a transceiver point ( transmission receiving point/transmission receiving poin, TRP), the base station in the subsequent evolution system, the access node in the wireless fidelity (wireless fidelity, WiFi) system, the wireless relay node, the wireless backhaul node, etc.
- the base station can be: a macro base station, a micro base station, a pico base station, a small base station, a relay station, or a balloon station, etc.
- Multiple base stations may support the above-mentioned networks of the same technology, or may support the above-mentioned networks of different technologies.
- a base station may contain one or more co-sited or non-co-sited TRPs.
- the network device may also be a wireless controller, a centralized unit (centralized unit, CU), and/or a distributed unit (distributed unit, DU) in a cloud radio access network (cloud radio access network, CRAN) scenario.
- the network device can also be a server, a wearable device, or a vehicle-mounted device.
- the following description takes the network device as the base station as an example.
- the multiple network devices may be base stations of the same type, or may be base stations of different types.
- the base station can communicate with the terminal, and can also communicate with the terminal through the relay station.
- the terminal can communicate with multiple base stations of different technologies.
- the terminal can communicate with the base station supporting the LTE network, and can also communicate with the base station supporting the 5G network, and can also support dual connection with the base station of the LTE network and the base station of the 5G network. , it can also support dual connection with the base station of the 5G network, etc.
- Time unit refers to time domain resources, and a time unit may include multiple sub-time units.
- a time unit may be a slot and a sub-time unit may be a symbol.
- the time unit may be a subframe, and the sub-time unit may be a slot or a symbol.
- the time unit is used as a time slot and the sub-time unit is used as a symbol as an example for description.
- Sideline communication refers to the communication between terminal equipment and terminal equipment.
- the link between terminal equipment and terminal equipment is called a side link.
- the side link may also be called a device-to-device (device-to-device, D2D) link, a side link, a side link, or the like, which is not limited in this embodiment of the present application.
- Sidelink channels may include physical sidelink control channel (PSCCH), physical sidelink shared channel (PSSCH), and sidelink feedback channel (PSFCH) , physical sidelink broadcast channel (physical sidelink broadcast channel, PSBCH), etc.
- PSCCH physical sidelink control channel
- PSSCH physical sidelink shared channel
- PSFCH sidelink feedback channel
- PSBCH physical sidelink broadcast channel
- Sidelink resources may include PSSCH resources and PSCCH resources.
- PSSCH is used to carry data information, that is, PSSCH resources are used to transmit data information.
- PSCCH is used to carry sidelink control information (SCI), that is, PSCCH resources are used to transmit SCI.
- SCI sidelink control information
- the information in the SCI may be called SA (scheduling assignment, scheduling assignment), and SA refers to related information used for data scheduling.
- SA may be used to indicate PSSCH resource allocation and modulation and coding methods.
- PSSCH resources may also be referred to as data resources (data resources), and PSCCH resources may also be referred to as SA resources.
- the transmission modes between terminal devices include: unicast transmission, multicast transmission and broadcast transmission.
- the three transmission modes will be introduced with reference to FIG. 1A to FIG. 1C respectively.
- Unicast transmission The receiving terminal of unicast transmission is usually one. Hereinafter, unicast transmission will be described with reference to FIG. 1A .
- FIG. 1A is a schematic diagram of unicast transmission provided by an embodiment of the present application.
- a terminal device 101 and a terminal device 102 are included, and unicast transmission is performed between the terminal device 101 and the terminal device 102 .
- the terminal device 102 can receive data sent by the terminal device 101 , and the terminal device 101 can also receive data sent by the terminal device 102 .
- the receiving device can be all terminal devices in a communication group, or it can be a terminal device whose distance from the sending device is less than the preset distance.
- unicast transmission will be described with reference to FIG. 1B .
- FIG. 1B is a schematic diagram of multicast transmission provided by an embodiment of the present application. Referring to FIG. 1B , it includes a terminal device 101 , a terminal device 102 , a terminal device 103 and a terminal device 104 .
- the four terminal devices can form a communication group, and multicast transmission is performed between the terminal devices in the communication group.
- the terminal device 102 , the terminal device 103 and the terminal device 104 can all receive the data sent by the terminal device 101 .
- Broadcast transmission In broadcast transmission, the receiving terminal can be any terminal device around the sending terminal. In the following, broadcast transmission is described with reference to FIG. 1C .
- FIG. 1C is a schematic diagram of multicast transmission provided by an embodiment of the present application. Referring to FIG. 1C , it includes a terminal device 101 , a terminal device 102 , a terminal device 103 , a terminal device 104 and a terminal device 105 .
- the terminal device 102 , the terminal device 103 , the terminal device 104 and the terminal device 105 are located in the vicinity of the terminal device 101 .
- the terminal device 102 , the terminal device 103 , the terminal device 104 , and the terminal device 105 can receive the data broadcast by the terminal device 101 .
- 2-order SCI is introduced in NR vehicle to everything (V2X), and the first-order SCI is carried in PSCCH, which is used to indicate PSSCH transmission resources, reserved resource information, MCS level, priority and other information.
- the second-order SCI is sent in the resources of PSSCH, and demodulated by the demodulation reference signal (DMRS) of PSSCH, which is used to indicate the sender ID, receiver ID, hybrid automatic repeat request (hybrid automatic repeat request) , HARQ) ID, new transport block indication (NDI, new data indicator) and other information used for data demodulation.
- DMRS demodulation reference signal
- NDI new transport block indication
- FIG. 2 is a schematic diagram of a frame structure provided by an embodiment of the present application.
- the duration corresponding to one frame structure may be one time slot, and the frame structure includes 14 symbols.
- Symbol 0 is used to transmit automatic gain control (AGC).
- Symbol 1 Symbol 2 and Symbol 3 are used to transmit PSCCH.
- Symbol 4 and symbol 11 are used to transmit DMRS.
- the second-order SCI is mapped on symbol 4, symbol 5 and symbol 6, wherein the second-order SCI and DMRS are frequency-division multiplexed on symbol 4, and the resource size occupied by the second-order SCI is related to the number of bits of the second-order SCI .
- Other symbols are used to transmit PSSCH.
- the manner in which the terminal device obtains sidelink resources may be different.
- three network coverage situations are introduced with reference to FIG. 3A-FIG. 3C.
- FIG. 3A is a schematic diagram of a network coverage situation according to an embodiment of the present application. Referring to FIG. 3A , it includes a network device 301 , a terminal device 302 and a terminal device 303 . Both the terminal device 302 and the terminal device 303 are within the coverage of the same network device, and sideline communication can be performed between the terminal device 302 and the terminal device 303 . Both the terminal device 302 and the terminal device 303 can receive configuration instructions from network devices, and communicate based on the configuration instructions.
- FIG. 3B is a schematic diagram of another network coverage situation provided by an embodiment of the present application. Please refer to FIG. 3B , including a network device 301 , a terminal device 302 and a terminal device 303 .
- Terminal device 302 may receive configuration instructions from network devices and communicate based on the configuration instructions.
- the terminal device 303 cannot receive the configuration instruction of the network device, and the terminal device 303 can determine the sideline according to the pre-configuration information and the information carried in the PSBCH sent by the terminal device (for example, the terminal device 302) located within the network coverage. configured for sideline communication.
- FIG. 3C is a schematic diagram of still another network coverage situation provided by an embodiment of the present application.
- a terminal device 302 and a terminal device 303 are included. Both the terminal device 302 and the terminal device 303 are outside the coverage of the network device, and sideline communication can be performed between the terminal device 302 and the terminal device 303 .
- the terminal device 302 and the terminal device 303 may determine a sideline configuration according to pre-configuration information, so as to perform sideline communication.
- the first resource acquisition method the network device allocates resources to the terminal device, and the terminal device performs data transmission according to the resources allocated by the network device.
- the network device may allocate resources for a single transmission to the terminal device, and may also allocate resources for semi-static transmission to the terminal device.
- the terminal device 302 and the terminal device 303 can perform data transmission through the resources allocated by the network device 301 .
- the terminal device 302 can perform data transmission through the resources allocated by the network device 301
- the second resource acquisition method the terminal device selects resources in the resource pool for data transmission.
- the resource pool may be a resource pool allocated by a network device or a preconfigured resource pool.
- the terminal device 302 and the terminal device 303 may select resources from the resource pool allocated by the network device 301 for data transmission.
- the terminal device 302 may select resources in the resource pool allocated by the network device 301 for data transmission, and the terminal device 303 may select resources in the preconfigured resource pool for data transmission.
- the terminal device 302 and the terminal device 303 may select resources from a preconfigured resource pool for data transmission.
- the terminal device In the second resource acquisition manner, if the terminal device randomly selects resources in the resource pool, the probability of resource conflict is high, or the utilization rate of resources is low.
- the terminal device can also listen to the reserved resources of other terminal devices (resources that the terminal device may use in the future period). However, selecting resources according to the listening results may still result in resource conflicts or low resource utilization.
- the listening process of the terminal equipment may be: the terminal equipment receives PSCCH sent by other terminal equipment, the PSCCH includes resources reserved by other terminal equipment, and the terminal equipment determines the resources reserved by other terminal equipment according to the received PSCCH.
- the reserved resources are usually resources used by the terminal equipment for data transmission in the future period.
- the first case is a first case:
- the terminal device usually listens within a certain range, and cannot detect the resources reserved by the terminal device far away, so that the terminal device may use the same resources as other terminal devices far away from it, which may lead to resource loss. conflict. This situation will be described below with reference to FIG. 4A .
- FIG. 4A is a schematic diagram of a data transmission scenario provided by an embodiment of the present application. Please refer to FIG. 4A , including terminal device A, terminal device B, and terminal device C.
- the distance between the terminal equipment B and the terminal equipment C is relatively far, and the terminal equipment A is located between the terminal equipment B and the terminal equipment C.
- terminal equipment B and terminal equipment C cannot obtain resources reserved by each other due to the long distance between terminal equipment B and terminal equipment C.
- terminal equipment B and terminal equipment C may use the same resources to Terminal device A sends data (PSSCH), which in turn leads to relatively large interference between terminal device B and terminal device C.
- a terminal device cannot receive data from other terminal devices while sending data. In this way, during the sending process of the terminal device, the reserved resources of other terminal devices cannot be monitored. In order to avoid resource conflict, the terminal device excludes all possible resources that have not been monitored during resource selection. In this way, the terminal device The device may exclude too many resources, causing some resources to be underutilized, resulting in low resource utilization.
- the third case is a first case.
- the terminal device After the terminal device monitors the reservation of a certain resource by other terminal devices, the terminal device no longer uses the resource. However, if two terminal devices use the same resources to send data to two terminal devices that are far apart, there will be no major interference. In this case, if the terminal devices do not use the reserved resources of other terminal devices , which may result in lower resource utilization. This situation will be described below with reference to FIG. 4B .
- FIG. 4B is a schematic diagram of a data transmission scenario provided by an embodiment of the present application. Please refer to FIG. 4B , including terminal device A, terminal device B, terminal device C, and terminal device D.
- the distance between the terminal device B and the terminal device C is relatively short, and the distance between the terminal device A and the terminal device D is relatively far.
- terminal device B and terminal device C can monitor each other's reserved resources.
- terminal device B monitors that terminal device C reserves a certain resource, terminal device B will no longer use the resource to send data to terminal device A, but , if the resource reserved by the terminal device C is to send data to the terminal device D, the utilization rate of the resource is low.
- the first terminal device may send the first resource set to the second terminal device within an appropriate time period, so that the second terminal device can obtain the first resource set in time, and perform Reference is made to the first resource set during resource selection, thereby reducing the probability of resource conflict between the second terminal device and other terminal devices, and improving resource utilization.
- FIG. 5 is a schematic flowchart of a communication method provided by an embodiment of the present application. Referring to Figure 5, the method can include:
- the first terminal device determines a first time period.
- the first period is a period during which the first terminal device sends the first resource set to the second terminal device, so that the second terminal device can obtain the first resource set in time.
- the first terminal device may determine the first time period according to the first information.
- the first information includes at least one of the following information:
- a request message received by the first terminal device from the second terminal device or,
- the interception information of the first terminal device or,
- the first time period may be a time period within the first time period after the first device receives the request message. That is, after the first terminal device receives the request message sent by the second terminal device, the first terminal device sends the first resource set to the second terminal device within the first duration.
- the request message is used to request to acquire the first resource set; or, the request message is used to request to start or reset a timer, and the duration of the timer is the first duration.
- the first terminal device may determine whether the first condition is satisfied according to the interception information at the first moment, and if so, determine the time period within the second duration after the first moment as the first period. That is, if at the first moment, the first terminal device determines that the first condition is satisfied according to the listening information, the terminal device sends the first resource set to the second terminal device within the second preset trial production.
- the first condition will be introduced in subsequent embodiments, and will not be repeated here.
- the first period is a period within a third time period after the first terminal device performs the resource reselection operation. That is, after the first terminal device completes the resource reselection operation, the first terminal device sends the first resource set to the second terminal device within a third time period.
- the first terminal device sends the first resource set to the second terminal device within the first time period.
- the first terminal device may send the first resource set to the second terminal device through a sidelink.
- the contents included in the first resource set are also different.
- the first resource set may include the reserved resources of the first terminal device, the resources reserved for the second terminal device that may have resource conflicts in a future period, and the like.
- the first resource set will be described in subsequent embodiments, which will not be repeated here.
- the second terminal device selects resources according to the first resource set.
- the second terminal device has reserved resources, and the second terminal device may select resources according to the received first resource set and the reserved resources, and send information according to the selected resources.
- the first terminal device may determine the first time period, and send the first resource set to the second terminal device within the first time period, so that the second terminal device can receive the first resource set in time , and refer to the first resource set during resource selection, thereby reducing the probability of resource conflict between the second terminal device and other terminal devices, and improving resource utilization.
- the first terminal device may determine the first time period according to the first information.
- the process of determining the first time period by the first terminal device is different, and the first resource set sent by the first terminal device to the second terminal device may also be different. The following description will be made with reference to the embodiments shown in FIGS. 6 to 13 .
- FIG. 6 is a schematic flowchart of another communication method provided by an embodiment of the present application. Referring to Figure 6, the method can include:
- the second terminal device sends a request message to the first terminal device.
- the request message is used to request the first terminal device to acquire the first resource set.
- the second terminal device when the second terminal device needs to perform resource reselection, the second terminal device sends a request message to the first terminal device. For example, when the service cycle of the second terminal device changes, or when a service processing of the second terminal device is completed, the second terminal device may send a request message to the first terminal device.
- the bearing mode of the request message includes at least one of the following: bearing through SCI, bearing through medium access control cell (MAC CE), bearing through sideline radio resource control (radio resource control, RRC) message.
- MAC CE medium access control cell
- RRC radio resource control
- the value of the preset field in the SCI may be set to a preset value to instruct the second terminal device to send the request message to the first terminal device.
- the request message may be an SCI
- the value of the preset field in the SCI is a preset value. That is, if the first terminal device receives the SCI, and the value of the preset field in the SCI is a preset value, the first terminal device determines that the request message is received.
- the preset field may be a certain reserved bit, and the preset value may be 1.
- the SCI can be carried by PSCCH (first-order SCI) or by PSSCH (second-order SCI).
- the MAC CE When the request message is carried by the MAC CE, the MAC CE includes a minimum time offset value and a maximum time offset value, and the minimum time offset value and the maximum time offset value are different.
- the request message may be a MAC CE, and the minimum time offset value and the maximum time offset value included in the MAC CE are different. That is, if the first terminal device receives the MAC CE including the minimum time offset value and the maximum time offset value, and the minimum time offset value and the maximum time offset value are different, the first terminal device determines that the request message is received.
- the MAC CE can be carried by PSSCH.
- the sideline RRC message may carry the sideline RRC through the PSSCH.
- the first terminal device determines the first time period according to the request message.
- the first time period may be a time period within the first time period after the first terminal device receives the request message.
- the first period can be represented in the following two ways:
- the first way: the first period is [T_request+T_min, T_request+T_max].
- T_request may be the time when the first terminal device receives the request message, or T_request may be the end point or the start point of the time slot where the time when the first terminal device receives the request message is.
- T_min and T_max can be milliseconds, and the value of T_min can be zero.
- the values of T_min and T_max may be carried in the request message, or the values of T_min and T_max may be configured, pre-configured or defined by the network device.
- the second way: the first period is [n_request+n_min, n_request+n_max].
- n_request is the time slot in which the first terminal device receives the request message.
- n_min and n_max may be the number of physical time slots, or the number of time slots in the transmission resource pool where the second terminal device is located, or the number of time slots in the transmission resource pool where the first terminal device is located.
- the value of n_min can be zero.
- the value of n_max may be 2*T_R, where T_R represents the value of the resource reservation period (resource reservation period) field indicated in the SCI.
- n_min and n_max may be carried in the request message, or the values of n_min and n_max may be configured, pre-configured or defined by the network device.
- the first terminal device sends the first resource set to the second terminal device within the first time period.
- the first resource set may include reserved resources of the first terminal device; alternatively, the first resource set may include resources recommended for use by the first terminal device to the second terminal device; alternatively, the first resource set may include Conflicting resources, the conflicting resources are the same resources reserved by the second terminal device and other terminal devices.
- the first terminal device may determine the resource or conflicting resource recommended to the second terminal device by monitoring. Conflicting resources may also be referred to as colliding resources.
- the first resource set may also be other, as long as the first resource set can be used to assist the second terminal device in resource selection, so as to reduce the resource conflict probability or improve the resource utilization rate.
- the second terminal device performs resource selection according to the first resource set.
- the start point of the resource selection window when the second terminal device selects the resource may not be earlier than the second time, and the second time may be the start time of a time slot or termination time.
- the reserved resources may be determined.
- resources overlapping in the time domain in the first resource set and performing resource selection in the resources overlapping in the time domain.
- FIG. 7 is a schematic diagram of resource selection provided by an embodiment of the present application.
- the time domain range of the first resource set received by the second terminal device is from t2 to t4
- the time domain range of the resource selection window of the second terminal device is from t1 to t3
- the first resource set and resource selection The overlapping resources of the resources in the window are resources between t2 and t3, and the second terminal device may perform resource selection on the resources between t2 and t3. Since the first resource set is determined by the first terminal device through monitoring, if the second terminal device uses the resources in the first resource set, the probability of resource conflict with other terminal devices is small, and the resource utilization higher rate.
- the first terminal device may determine the first time period, and send the first resource set to the second terminal device within the first time period , so that the second terminal device can receive the first resource set in time, and refer to the first resource set when making resource selection, thereby reducing the probability of resource conflict between the second terminal device and other terminal devices, and improving the resource utilization rate.
- FIG. 8 is a schematic flowchart of still another communication method provided by an embodiment of the present application. Referring to Figure 8, the method can include:
- the second terminal device sends a request message to the first terminal device.
- the request message is used to request to start or reset the timer, and the duration of the timer is the first duration.
- the bearer mode of the request message includes at least one of the following: bearer through SCI, bearer through MAC CE, bearer through side row RRC.
- the value of the preset field in the SCI may be set to a preset value to instruct the second terminal device to send the request message to the first terminal device.
- the request message can be an SCI
- the value of the preset field in the SCI is a preset value. That is, if the first terminal device receives the SCI, and the value of the preset field in the SCI is a preset value, the first terminal device determines that the request message is received.
- the preset field may be a certain reserved bit, and the preset value may be 1.
- SCI second order SCI
- MAC CE MAC CE
- sideline RRC messages can be carried through PSSCH.
- the first terminal device starts or resets the timer according to the request message.
- the timer starts to count.
- the first terminal device determines the first time period.
- the first period of time may be a period of time within a first time period after the timer expires.
- the request message may include the first duration, or the first duration may be configured, pre-configured or defined by a network device.
- the first period may be [t0, t0+t1], where t1 is the first duration.
- the first terminal device sends the first resource set to the second terminal device within the first time period.
- the second terminal device performs resource selection according to the first resource set.
- the first terminal device may determine the first time period, and send the first resource set to the second terminal device within the first time period, so that the second terminal device can timely
- the first resource set is received, and the first resource set is referred to during resource selection, thereby reducing the probability of resource conflict between the second terminal device and other terminal devices, and improving resource utilization.
- FIG. 9 is a schematic flowchart of still another communication method provided by an embodiment of the present application. Referring to Figure 9, the method can include:
- the first terminal device acquires listening information.
- the listening information may include the first terminal device's monitoring of PSCCH sent by other terminal devices, and the first terminal device's measurement of the received power of reference information of other terminal devices.
- the PSCCH may include reserved resources of other terminal equipments.
- the first terminal device determines that the first condition is satisfied according to the interception information at the first moment.
- the first condition is: the interference on one or more resources in the second resource set is greater than or equal to the first threshold.
- the second resource set is reserved resources of the second terminal device located in the second time period, and the second time period is located after the first time period.
- the first moment may be the moment at which it is determined that the first condition is satisfied, or the first moment may be the start moment or the end moment of the time slot where the moment in which the first condition is satisfied is determined.
- the first terminal device may determine that the interference on one or more resources in the second resource set is greater than or equal to the first threshold in the following manner: the first terminal device may receive PSCCHs sent by other terminal devices, and the PSCCH may include other Reserved resources for terminal equipment.
- the first terminal device determines that the reserved resources of the fourth terminal device overlap with the reserved resources of the second terminal device, when the first terminal device can receive the PSCCH-side reference signal received power (reference signal received power, RSRP) or PSSCH-RSRP to measure, if the measured PSCCH-RSRP or PSSCH-RSRP is greater than or equal to the first threshold, it is determined that the interference on one or more resources in the second resource set is greater than or equal to first threshold.
- RSRP reference signal received power
- the first threshold value is determined according to at least one of the following information:
- the priority of sending data by the second terminal device and the priority of sending data by the fourth terminal device where the fourth terminal device is a device that causes interference on one or more resources in the second resource set within the second time period.
- the capabilities of the first terminal device may include: the capability of the first terminal device to demodulate the PSCCH and the capability of the first terminal device to demodulate the PSSCH.
- the signal-to-noise ratio at which the first terminal device can demodulate the PSCCH represents the capability of the first terminal device to demodulate the PSCCH.
- the capability of the first terminal device to demodulate the PSSCH can be represented by the signal-to-noise ratio at which the first terminal device can demodulate the PSSCH.
- the first terminal device follows ⁇ 1, 1, 1 ⁇ , ⁇ 1, ⁇ 1, e j2/3 ⁇ , e -j2/3 ⁇ ⁇ , ⁇ 1, e -j2/3 ⁇ , e j2/3 ⁇ ⁇
- These three PSCCH DMRS mask sequences are assumed to perform 3 PSCCH decoding.
- the value of the first threshold may be positive infinity . If the priority of data sent by the second terminal device is lower than the priority of data sent by the fourth terminal device, and the fourth terminal device does not have the function of selecting resources according to the first resource set, the first terminal device can be determined according to the capability of the first terminal device. a threshold.
- the first terminal device determines a time period within a second time period after the first moment as the first time period.
- the second duration may be configured by the second terminal device, or by the network device, or pre-configured, or defined by a standard.
- the second duration may also be the minimum value of the first value and the second value.
- the first value is cpn
- c is the time domain position of the first resource whose interference is greater than or equal to the first threshold in the second resource set
- p is the time from when the second terminal device receives the first resource set to the time it responds to the first resource set.
- the shortest preparation time required for a resource set, n is the first moment. Responding to the first resource set may be responding according to the first resource set, for example, responding to the first resource set may be performing resource selection according to the first resource set.
- the second value is the maximum delay allowed by the first terminal device from the first moment to sending the first resource set.
- p and the second data may be configured, pre-configured or defined by a network device.
- the first period of time will be described below with reference to FIG. 10 .
- FIG. 10 is a schematic time sequence diagram provided by an embodiment of the present application.
- the period after the first terminal device detects the fourth terminal device at t1 the unit may be a time slot
- the second terminal device the first condition is satisfied
- the second terminal equipment is the most The first resource set needs to be received late at time t3, otherwise, even if the second terminal device receives the first resource set, it is too late to perform resource selection according to the first resource set.
- the first terminal device determines at time t1 that the first condition is satisfied, the first terminal device needs to send the first resource set to the second terminal device within the second time period (between t1 and t2). It should be noted that, if t2 is after t3, the first terminal device does not need to send the resource set to the second terminal device.
- the first terminal device sends the first resource set to the second terminal device within the first time period.
- the first resource set includes one or more resources whose interference is greater than or equal to the first threshold in the second resource set. That is, the first resource set includes conflicting resources in the second resource set.
- the second terminal device selects resources according to the first resource set.
- the second terminal device may exclude resources in the first resource set from the second resource set, and then perform resource selection. In this way, the selection of conflicting resources by the second terminal device can be avoided.
- the first terminal device when the first terminal device detects that the interference on one or more resources in the second resource set of the second terminal device is greater than or equal to the first threshold, the first terminal device may Determine the first time period, and send the first resource set to the second terminal device within the first time period, so that the second terminal device can receive the first resource set in time, and refer to the first resource set when performing resource selection, and then The probability of resource conflict between the second terminal device and other terminal devices is reduced, and the utilization rate of resources is improved.
- FIG. 11 is a schematic flowchart of another communication method provided by an embodiment of the present application. Referring to Figure 11, the method may include:
- the first terminal device performs a resource reselection operation.
- the resource reselection operation means that the first terminal device updates its reserved resources.
- the first terminal device determines a time period within a third time period after the resource reselection operation is performed as the first time period.
- the first terminal device may determine the first time period only when it determines that the fourth condition is satisfied.
- the fourth condition includes at least one of the following conditions:
- Condition 1 after the first terminal device performs a resource reselection operation, a resource conflict may occur between the first terminal device and the second terminal device in a future period.
- Condition 2 The time difference between the overlapping resource and the current moment is greater than or equal to the fourth threshold.
- the first terminal device determines the first time period, and sends the first resource set to the second terminal device during the first time period.
- Condition 3 The priority of data sent by the first terminal device is greater than the priority of data sent by the second terminal device.
- Condition 4 The priority of the data sent by the first terminal device is greater than or equal to the fifth threshold.
- At least one of the resources selected after the first terminal device performs the resource selection or resource reselection operation is located in the active time period (active time) of discontinuous reception (discontinuous reception, DRX), and the DRX is for the first terminal.
- the device is configured for the unicast link between the first terminal device and the second terminal device.
- the DRX includes an active period and an inactive period. If the first terminal equipment is configured with DRX for the unicast link between the first terminal equipment and the second terminal equipment, the first terminal equipment receives the data from the PSCCH or PSSCH of the two terminal equipment. The first device stops receiving PSCCH or PSSCH from the second terminal device at other times.
- the first terminal device sends the first resource set to the second terminal device within the first time period.
- the first resource set may include resources after resource reselection of the first terminal device.
- the first resource set includes conflicting resources, and the conflicting resources are overlapping resources among the reserved resources of the first terminal device (reserved resources after resource reselection) and the reserved resources of the second terminal device.
- the first terminal device may also send indication information to the second terminal device, where the indication information is used to indicate the types of resources included in the first resource set.
- the types of resources may be: reserved resources of the first terminal device, conflicting resources, and the like.
- the second terminal device performs resource selection according to the first resource set.
- the second terminal device may select resources according to the first resource set and the second resource set (preset Reserving resources) to determine conflicting resources, remove the resources in the first resource set from the second resource set, and then perform resource selection. In this way, the selection of conflicting resources by the second terminal device can be avoided.
- the second terminal device may remove the resources in the first resource set from the second resource set (reserved resources of the second terminal device), and then perform resource selection. In this way, the selection of conflicting resources by the second terminal device can be avoided.
- the first terminal device may send the first resource set to the second terminal device on the first time domain resource, where the first time domain resource is the first resource in the reserved resources after the first terminal device performs the resource reselection operation.
- the first terminal device may determine the first time period, and send the first resource set to the second terminal device within the first time period, so that the first The second terminal device can receive the first resource set in time, and refer to the first resource set when selecting resources, thereby reducing the probability of resource conflict between the second terminal device and other terminal devices, and improving resource utilization.
- FIG. 12 is a schematic flowchart of still another communication method provided by an embodiment of the present application. Referring to Figure 12, the method may include:
- the first terminal device acquires listening information.
- the first terminal device can receive PSCCHs sent by other terminal devices, and according to the PSCCH can determine which terminal devices send the PSSCH to the first terminal device in the future time unit.
- the first terminal device determines that the first condition is satisfied according to the interception information at the first moment.
- the first condition is: the first terminal device is to receive M PSSCHs that need to feed back HARQ in the first time unit.
- M is an integer greater than the second threshold
- the first time unit is a time unit after the current time, and there is a PSSCH from the second terminal device in the M PSSCHs.
- the PSSCH on which HARQ needs to be fed back refers to the PSSCH on which a response message needs to be sent. That is, after the first terminal device receives the PSSCH sent by the second terminal device and needs to feed back HARQ, the first terminal device needs to send a response message corresponding to the PSSCH to the second terminal device.
- the response message may be HARQ-ACK.
- the first terminal device receives M PSSCHs that need to feed back HARQ within the first time unit, the first terminal device needs to send M response messages in other time units after the first time unit.
- the second threshold is the maximum data processing amount of the first terminal device in one time unit.
- the first terminal device determines a time period within a second time period after the first moment as the first time period.
- the second duration may be configured by the second terminal device, or by the network device, or pre-configured, or defined by a standard.
- the first terminal device determines a time period within a second time period after the first moment as the first time period.
- the second condition includes at least one of the following conditions:
- Condition 1 The time difference between the first time unit and the current time unit is greater than or equal to the third threshold.
- the first terminal device determines the first time period and sends the first resource set to the second terminal device during the first time period.
- Condition 2 The priority of sending data by the second terminal device is lower than the priority of sending data by the fifth terminal device, and the M PSSCHs come from at least the second terminal device and the fifth terminal device.
- the M PSSCHs to be received by the first terminal device in the first time unit are from M terminal devices.
- the fifth terminal device may be other terminal device except the second terminal device among the M terminal devices. That is, among the M terminal devices, the priority of the second terminal device is the lowest.
- Condition 3 The second terminal device has the function of performing resource selection according to the first resource set, and the fifth terminal device does not have the function of performing resource selection according to the first resource set.
- the second terminal device has the lowest priority for sending data in the first time unit.
- the first terminal device sends the first resource set to the second terminal device within the first time period.
- the first resource set includes resources reserved by the second terminal device in the first time unit.
- the second terminal device selects resources according to the first resource set.
- the second terminal device may remove the resources in the first resource set from the second resource set (reserved resources of the second terminal device), and then perform resource selection.
- the time unit sends the PSSCH that needs to feed back HARQ to the first terminal device, thereby preventing the first terminal device from receiving too many PSSCHs that need to feed back HARQ in the first time unit.
- the first terminal device may determine the first time period, and in the first time unit Send the first resource set to the second terminal device within the time period, so that the second terminal device can receive the first resource set in time, and avoid sending the PSSCH that needs to feedback HARQ to the first terminal device in the first time unit, thereby avoiding the first time unit.
- the terminal device receives too many PSSCHs that need to feed back HARQ in the first time unit, thereby preventing the first terminal device from being overloaded.
- FIG. 13 is a schematic flowchart of another communication method provided by an embodiment of the present application. Referring to Figure 13, the method may include:
- the first terminal device acquires listening information.
- the first terminal device can determine the PSSCH transmission situation of the other terminal devices in the future time unit by listening to the PSCCH of other terminal devices. For example, the first terminal device can determine the PSSCH of other terminal devices in the future which time units to which terminal devices send PSSCH.
- the first terminal device determines that the first condition is satisfied according to the interception information at the first moment.
- the first condition is: in the second time unit, the second terminal device needs to send the PSSCH to the third terminal device, and the third terminal device also needs to send the PSSCH to the second terminal device, and the second time unit is the time after the current moment. time unit. That is, in the second time unit in the future, the second terminal device and the third terminal device need to send PSSCH to each other. Due to the limitation of half-duplex, the terminal device cannot receive data while sending data. Therefore, if the second terminal device and the third terminal device send data in the second time unit at the same time, it may cause the second terminal device and the third terminal device to send data at the same time. Terminal device data reception failed.
- the first terminal device can determine that the first condition is satisfied in the following manner: the 8-bit (least significant bit) LSB of the target ID indicated in the PSSCH sent by the third terminal device is the same as the source ID indicated in the PSSCH sent by the second terminal device .
- the 8-bit (least significant bit) LSB of the target ID indicated in the PSSCH sent by the second terminal device is the same as the source ID indicated in the PSSCH sent by the third terminal device.
- the first terminal device determines a time period within a second time period after the first moment as the first time period.
- the first terminal device may determine a time period within the second time period after the first moment as the first time period.
- the third condition includes at least one of the following conditions:
- the priority of data sent by the second terminal device is lower than the priority of data sent by the third terminal device; or,
- the second terminal device has the function of performing resource selection according to the first resource set.
- the first terminal device sends the first resource set to the second terminal device within the first time period.
- the first resource set includes resources reserved by the second terminal in the second time unit.
- the second terminal device selects resources according to the first resource set.
- the second terminal device may exclude resources in the first resource set from the second resource set, and then perform resource selection. In this way, the second terminal device can avoid sending the PSSCH to the third terminal device in the second time unit, thereby avoiding failure of data reception between the second terminal device and the third terminal device.
- the first terminal device when the first terminal device detects that in the second time unit in the future, the second terminal device and the third terminal device exchange data, the first terminal device can determine the first time period, and send the first resource set to the second terminal device within the first time period, so that after the second terminal device receives the first resource set, it avoids sending the PSSCH to the third terminal device in the second time unit, thereby avoiding the second terminal device and the third terminal device fails to receive data, which improves the success rate of data transmission.
- FIG. 14 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application.
- the communication device 10 may include a processing module 11 and a sending module 12, wherein,
- the processing module 11 is used to determine the first time period
- the sending module 12 is configured to send a first resource set to a second terminal device within the first time period, where the first resource set is used for the second terminal device to perform resource selection.
- the communication apparatus provided in the embodiments of the present application can implement the technical solutions shown in the foregoing method embodiments, and the implementation principles and beneficial effects thereof are similar, which will not be repeated here.
- the processing module 11 is specifically configured to determine the first time period according to first information, where the first information includes at least one of the following information:
- the request message received by the first terminal device from the second terminal device or,
- the first information is the request message
- the first time period is a time period within a first time period after the first terminal device receives the request message.
- the bearing manner of the request message includes at least one of the following manners:
- the value of the preset field in the SCI is a preset value.
- the MAC CE includes a minimum time offset value and a maximum time offset value, the minimum time offset value is different from the maximum time offset value, and the minimum time offset value is different.
- the offset value and the maximum time offset value are used by the first terminal device to determine the first time period.
- the request message is used to request to acquire the first resource set; or,
- the request message is used to request to start or reset the timer, and the duration of the timer is the first duration.
- the first information is the listening information; the processing module 11 is specifically configured to:
- a time period within a second time period after the first moment is determined as the first time period.
- the first condition includes at least one of the following conditions:
- the interference on one or more resources in the second resource set is greater than or equal to the first threshold, and the second resource set is the reserved resources of the second terminal device within the second period , the second period is located after the first period; or,
- the first terminal device is to receive M sideline data channels PSSCH that need to feed back HARQ in the first time unit, where M is an integer greater than the second threshold, and the first time unit is the time unit after the current moment , there is a PSSCH from the second terminal device in the M PSSCHs; or,
- the second terminal device is to send the PSSCH to the third terminal device
- the third terminal device is to send the PSSCH to the second terminal device
- the second time unit is the time after the current time. time unit.
- the first condition is that in the second time period, the interference on one or more resources in the second resource set is greater than or equal to the first threshold;
- the first set of resources includes one or more resources within the second set of resources whose interference is greater than or equal to the first threshold.
- the first threshold value is determined according to at least one of the following information:
- the second duration is the minimum value of the first value and the second value
- the first value is cpn, where c is the time domain position of the first resource whose interference is greater than or equal to the first threshold in the second resource set, and p is the second terminal device
- the shortest preparation time, the n is the first moment
- the second value is the maximum delay allowed by the first terminal device from the first moment to sending the first resource set.
- the first condition is that the first terminal device needs to receive M sidelink data channels PSSCH that need to feed back HARQ within the first time unit;
- the first resource set includes resources reserved by the second terminal device within the first time unit.
- processing module 11 is specifically used for:
- a time period within a second time period after the first moment is determined as the first time period.
- the second condition includes at least one of the following conditions:
- the time difference between the first time unit and the current time unit is greater than or equal to a third threshold; or,
- the priority of data sent by the second terminal device is lower than the priority of data sent by the fifth terminal device, and the M PSSCHs are from at least the second terminal device and the fifth terminal device; or,
- the second terminal device has the function of performing resource selection according to the first resource set, and the fifth terminal device does not have the function of performing resource selection according to the first resource set; or,
- the priority of the second terminal device for sending data in the first time unit is the lowest.
- the first condition is that in the second time unit, the second terminal device has data sent to the third terminal device, and the third terminal device has data sent to the second terminal device data sent by terminal equipment;
- the first resource set includes resources reserved by the second terminal in the second time unit.
- processing module 11 is specifically used for:
- a time period within a second time period after the first moment is determined as the first time period.
- the third condition includes at least one of the following conditions:
- the priority of sending data by the second terminal device is lower than the priority of sending data by the third terminal device; or,
- the second terminal device has the function of performing resource selection according to the first resource set.
- the first information is the resource reselection operation
- the first time period is a time period within a third time period after the first terminal device performs a resource reselection operation.
- the sending module 12 is specifically configured to:
- the first terminal device When determining that the fourth condition is satisfied, the first terminal device sends the first resource set to the second terminal device within the first time period.
- the fourth condition includes at least one of the following conditions:
- the time difference between the overlapping resource and the current moment is greater than or equal to the fourth threshold; or,
- the priority of sending data by the first terminal device is greater than the priority of sending data by the second terminal device; or,
- the priority of the data sent by the first terminal device is greater than or equal to the fifth threshold; or,
- At least one of the resources selected after the first terminal device performs the resource selection or resource reselection operation is located within the activation period of the discontinuous reception of DRX, the DRX is for the first terminal device for the first terminal device and all the resources. the unicast link configuration between the second terminal devices.
- the sending module 12 is specifically configured to:
- the first terminal device sends the first resource set to the second terminal device on the first time domain resource, where the first time domain resource is a pre-resource after the first terminal device performs a resource reselection operation.
- the first resource in the remaining resources.
- the communication apparatus provided in the embodiments of the present application can implement the technical solutions shown in the foregoing method embodiments, and the implementation principles and beneficial effects thereof are similar, and details are not repeated here.
- FIG. 15 is a schematic structural diagram of another communication apparatus provided by an embodiment of the present application.
- the communication device 20 may include a receiving module 21 and a processing module 22, wherein,
- the receiving module 21 is configured to receive the first resource set from the first terminal device within the first time period
- the processing module 22 is configured to perform resource selection according to the first resource set.
- the communication apparatus provided in the embodiments of the present application can implement the technical solutions shown in the foregoing method embodiments, and the implementation principles and beneficial effects thereof are similar, and details are not repeated here.
- the first time period is determined by the first terminal device according to first information, and the first information includes at least one of the following information:
- the communication apparatus provided in the embodiments of the present application can implement the technical solutions shown in the foregoing method embodiments, and the implementation principles and beneficial effects thereof are similar, and details are not repeated here.
- FIG. 16 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
- the terminal device 30 may include: a transceiver 31 , a memory 32 , and a processor 33 .
- the transceiver 31 may include: a transmitter and/or a receiver.
- the transmitter may also be referred to as a transmitter, transmitter, transmit port, or transmit interface, or the like, and the receiver may be referred to as a receiver, receiver, receive port, or receive interface, or the like.
- the transceiver 31 , the memory 32 , and the processor 33 are connected to each other through a bus 34 .
- memory 32 for storing program instructions
- the processor 33 is configured to execute the program instructions stored in the memory, so as to make the terminal device 30 execute any one of the communication methods shown above.
- the receiver of the transceiver 31 may be used to perform the receiving function and the sending function of the terminal device in the above communication method.
- An embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement the above communication method.
- Embodiments of the present application may further provide a computer program product, which can be executed by a processor, and when the computer program product is executed, can implement any of the communication methods performed by the terminal device shown above.
- the terminal device, the computer-readable storage medium, and the computer program product of the embodiments of the present application can execute the communication method executed by the above-mentioned terminal device, and the specific implementation process and beneficial effects thereof are referred to above, and are not repeated here.
- the network device, computer-readable storage medium, and computer program product of the embodiments of the present application can execute the communication method executed by the above-mentioned network device, and the specific implementation process and beneficial effects thereof are referred to above, and are not repeated here.
- the aforementioned program can be stored in a readable memory.
- the steps including the above method embodiments are executed; and the aforementioned memory (storage medium) includes: read-only memory (English: read-only memory, abbreviation: ROM), RAM, flash memory, hard disk, Solid state drive, magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), optical disc (English: optical disc) and any combination thereof.
- These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
- the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.
- the term “comprising” and its variants may mean non-limiting inclusion; the term “or” and its variants may mean “and/or”.
- the terms “first”, “second” and the like in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
- “plurality” means two or more.
- “And/or”, which describes the association relationship of the associated objects means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone.
- the character “/" generally indicates that the associated objects are an "or” relationship.
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Abstract
Description
Claims (51)
- 一种通信方法,其特征在于,包括:第一终端设备确定第一时段;所述第一终端设备在所述第一时段内向第二终端设备发送第一资源集合,所述第一资源集合用于所述第二终端设备进行资源选择。
- 根据权利要求1所述的方法,其特征在于,第一终端设备确定第一时段,包括:所述第一终端设备根据第一信息,确定所述第一时段,其中,所述第一信息包括如下信息中的至少一种:所述第一终端设备从所述第二终端设备接收到的请求消息;或者,所述第一终端设备的侦听信息;或者,所述第一终端设备的资源重选操作。
- 根据权利要求2所述的方法,其特征在于,所述第一信息为所述请求消息;所述第一时段为所述第一终端设备接收到所述请求消息之后第一时长内的时段。
- 根据权利要求2或3所述的方法,其特征在于,所述请求消息的承载方式包括如下方式中的至少一种:通过侧行控制信息SCI承载、通过媒体接入层控制单元MAC CE承载、通过侧行无线资源控制RRC承载。
- 根据权利要求4所述的方法,其特征在于,所述SCI中预设字段的值为预设值。
- 根据权利要求4所述的方法,其特征在于,所述MAC CE中包括最小值时间偏移值和最大时间偏移值,所述最小时间偏移值和所述最大时间偏移值不同,所述最小时间偏移值和所述最大时间偏移值用于所述第一终端设备确定所述第一时段。
- 根据权利要求3-6任一项所述的方法,其特征在于,所述请求消息用于请求获取所述第一资源集合;或者,所述请求消息用于请求启动或重置定时器,所述定时器的时长为第一时长。
- 根据权利要求2所述的方法,其特征在于,所述第一信息为所述侦听信息;所述第一终端设备确定所述第一时段,包括:所述第一终端设备在第一时刻,根据所述侦听信息确定第一条件满足;所述第一终端设备将所述第一时刻之后第二时长内的时段确定为所述第一时段。
- 根据权利要求8所述的方法,其特征在于,所述第一条件包括如下条件中的至少一种:在第二时段内,在第二资源集合中的一个或多个资源上的干扰大于或等于第一阈值,所述第二资源集合为所述第二终端设备位于第二时段内的预留资源,所述第二时段位于所述第一时段之后;或者,所述第一终端设备在第一时间单元内待接收M个需要反馈混合自动重传请求信息HARQ的侧行数据信道PSSCH,所述M为大于第二阈值的整数,所述第一时间单元为当前时刻之后的时间单元,所述M个PSSCH中存在来自所述第二终端设备的PSSCH;或者,在第二时间单元,所述第二终端设备待向第三终端设备发送PSSCH,且所述第三终端设备待向所述第二终端设备发送PSSCH,所述第二时间单元为当前时刻之后的时间单元。
- 根据权利要求9所述的方法,其特征在于,所述第一条件为在第二时段内,在第二资源集合内的一个或多个资源上的干扰大于或等于第一阈值;所述第一资源集合包括所述第二资源集合内干扰大于或等于所述第一阈值的一个或多个资源。
- 根据权利要求10所述的方法,其特征在于,所述第一阈值为根据如下信息中的至少一种确定得到的:所述第一终端设备的能力;或者,所述第二终端设备发送数据的优先级、第四终端设备发送数据的优先级,所述第四终端设备为在所述第二时段内在所述第二资源集合内的一个或多个资源上产生干扰的设备。
- 根据权利要求10或11所述的方法,其特征在于,所述第二时长为第一数值和第二数值中的最小值;所述第一数值为c-p-n,其中,所述c为所述第二资源集合内第一个干扰大于或等于所述第一阈值的资源的时域位置,所述p为所述第二终端设备从接收到所述第一资源集合到响应所述第一资源集合所需的最短准备时长,所述n为所述第一时刻;所述第二数值为所述第一终端设备从所述第一时刻到发送所述第一资源集合所允许的最大时延。
- 根据权利要求9所述的方法,其特征在于,所述第一条件为所述第一终端设备在第一时间单元内需要接收M个需要反馈HARQ的侧行数据信道PSSCH;所述第一资源集合包括所述第一时间单元内第二终端设备预留的资源。
- 根据权利要求13所述的方法,其特征在于,所述第一终端设备将所述第一时刻之后第二时长内的时段确定为所述第一时段,包括:在所述第一终端设备确定第二条件满足时,所述第一终端设备将所述第一时刻之后第二时长内的时段确定为所述第一时段。
- 根据权利要求14所述的方法,其特征在于,所述第二条件包括如下条件中的至少一种:所述第一时间单元与当前时间单元之间的时间差大于或等于第三阈值;或者,所述第二终端设备发送数据的优先级小于第五终端设备发送数据的优先级,所述M个PSSCH至少来自于所述第二终端设备和所述第五终端设备;或者,所述第二终端设备具有根据所述第一资源集合进行资源选择的功能,所述第五终端设备不具有根据所述第一资源集合进行资源选择的功能;或者,在所述第二终端设备和所述第五终端设备中,所述第二终端设备在所述第一时间单元发送数据的优先级最低。
- 根据权利要求9所述的方法,其特征在于,所述第一条件为在第二时间单元,所述第二终端设备存在向第三终端设备发送的数据,且所述第三终端设备存在向所述第二终端设备发送的数据;所述第一资源集合包括所述第二时间单元内第二终端预留的资源。
- 根据权利要求16所述的方法,其特征在于,所述第一终端设备将所述第一时刻之后第二时长内的时段确定为所述第一时段,包括:在所述第一终端设备确定第三条件满足时,所述第一终端设备将所述第一时刻之后第二时长内的时段确定为所述第一时段。
- 根据权利要求17所述的方法,其特征在于,所述第三条件包括如下条件中的至少一种:所述第二终端设备发送数据的优先级小于所述第三终端设备发送数据的优先级;或者,所述第二终端设备具有根据所述第一资源集合进行资源选择的功能。
- 根据权利要求2所述的方法,其特征在于,所述第一信息为所述资源重选操作;所述第一时段为所述第一终端设备进行资源重选操作之后第三时长内的时段。
- 根据权利要求19所述的方法,其特征在于,所述第一终端设备在所述第一时段内向第二终端设备发送第一资源集合,包括:所述第一终端设备在确定第四条件满足时,所述第一终端设备在所述第一时段内向第二终端设备发送第一资源集合。
- 根据权利要求20所述的方法,其特征在于,所述第四条件包括如下条件中的至少一种:所述第一终端设备进行资源重选操作后的预留资源中与所述第二终端设备的预留资源中存在重叠资源;或者,所述重叠资源与当前时刻之间的时间差大于或等于第四阈值;或者,所述第一终端设备发送数据的优先级大于所述第二终端设备发送数据的优先级;或者,所述第一终端设备发送数据的优先级大于或等于第五阈值;或者,所述第一终端设备进行资源选择或资源重选操作后选择的资源中的至少一个位于非连续接收DRX的激活时段内,所述DRX是为所述第一终端设备针对所述第一终端设备和所述第二终端设备之间的单播链路配置的。
- 根据权利要求19-21任一项的方法,其特征在于,所述第一终端设备在所述第一时段内向第二终端设备发送第一资源集合,包括:所述第一终端设备在第一时域资源上向所述第二终端设备发送所述第一资源集合,所述第一时域资源为所述第一终端设备进行资源重选操作后的预留资源中的第一个资源。
- 一种通信方法,其特征在于,包括:第二终端设备在第一时段内接收来自第一终端设备的第一资源集合;所述第二终端设备根据所述第一资源集合进行资源选择。
- 根据权利要求23所述的方法,其特征在于,所述第一时段为所述第一终端设备根据第一信息确定得到的,所述第一信息包括如下信息中的至少一种:所述第一终端设备从所述第二终端设备接收到的请求消息;或者,所述第一终端设备的侦听信息;或者,所述第一终端设备的资源重选操作。
- 一种通信装置,其特征在于,包括处理模块和发送模块,其中,所述处理模块用于,确定第一时段;所述发送模块用于,在所述第一时段内向第二终端设备发送第一资源集合,所述第一资源集合用于所述第二终端设备进行资源选择。
- 根据权利要求25所述的装置,其特征在于,所述处理模块具体用于,根据第一信息,确定所述第一时段,其中,所述第一信息包括如下信息中的至少一种:第一终端设备从所述第二终端设备接收到的请求消息;或者,所述第一终端设备的侦听信息;或者,所述第一终端设备的资源重选操作。
- 根据权利要求26所述的装置,其特征在于,所述第一信息为所述请求消息;所述第一时段为所述第一终端设备接收到所述请求消息之后第一时长内的时段。
- 根据权利要求26或27所述的装置,其特征在于,所述请求消息的承载方式包括如下方式中的至少一种:通过侧行控制信息SCI承载、通过媒体接入层控制单元MAC CE承载、通过侧行无线资源控制RRC 承载。
- 根据权利要求28所述的装置,其特征在于,所述SCI中预设字段的值为预设值。
- 根据权利要求28所述的装置,其特征在于,所述MAC CE中包括最小值时间偏移值和最大时间偏移值,所述最小时间偏移值和所述最大时间偏移值不同,所述最小时间偏移值和所述最大时间偏移值用于所述第一终端设备确定所述第一时段。
- 根据权利要求27-30任一项所述的装置,其特征在于,所述请求消息用于请求获取所述第一资源集合;或者,所述请求消息用于请求启动或重置定时器,所述定时器的时长为第一时长。
- 根据权利要求26所述的装置,其特征在于,所述第一信息为所述侦听信息;所述处理模块具体用于:在第一时刻,根据所述侦听信息确定第一条件满足;将所述第一时刻之后第二时长内的时段确定为所述第一时段。
- 根据权利要求32所述的装置,其特征在于,所述第一条件包括如下条件中的至少一种:在第二时段内,在第二资源集合中的一个或多个资源上的干扰大于或等于第一阈值,所述第二资源集合为所述第二终端设备位于第二时段内的预留资源,所述第二时段位于所述第一时段之后;或者,所述第一终端设备在第一时间单元内待接收M个需要反馈混合自动重传请求信息HARQ的侧行数据信道PSSCH,所述M为大于第二阈值的整数,所述第一时间单元为当前时刻之后的时间单元,所述M个PSSCH中存在来自所述第二终端设备的PSSCH;或者,在第二时间单元,所述第二终端设备待向第三终端设备发送PSSCH,且所述第三终端设备待向所述第二终端设备发送PSSCH,所述第二时间单元为当前时刻之后的时间单元。
- 根据权利要求33所述的装置,其特征在于,所述第一条件为在第二时段内,在第二资源集合内的一个或多个资源上的干扰大于或等于第一阈值;所述第一资源集合包括所述第二资源集合内干扰大于或等于所述第一阈值的一个或多个资源。
- 根据权利要求34所述的装置,其特征在于,所述第一阈值为根据如下信息中的至少一种确定得到的:所述第一终端设备的能力;或者,所述第二终端设备发送数据的优先级、第四终端设备发送数据的优先级,所述第四终端设备为在所述第二时段内在所述第二资源集合内的一个或多个资源上产生干扰的设备。
- 根据权利要求34或35所述的装置,其特征在于,所述第二时长为第一数值和第二数值中的最小值;所述第一数值为c-p-n,其中,所述c为所述第二资源集合内第一个干扰大于或等于所述第一阈值的资源的时域位置,所述p为所述第二终端设备从接收到所述第一资源集合到响应所述第一资源集合的最短准备时长,所述n为所述第一时刻;所述第二数值为所述第一终端设备从所述第一时刻到发送所述第一资源集合所允许的最大时延。
- 根据权利要求33所述的装置,其特征在于,所述第一条件为所述第一终端设备在第一时间单元内需要接收M个需要反馈HARQ的侧行数据信道PSSCH;所述第一资源集合包括所述第一时间单元内第二终端设备预留的资源。
- 根据权利要求37所述的装置,其特征在于,所述处理模块具体用于:在确定第二条件满足时,将所述第一时刻之后第二时长内的时段确定为所述第一时段。
- 根据权利要求38所述的装置,其特征在于,所述第二条件包括如下条件中的至少一种:所述第一时间单元与当前时间单元之间的时间差大于或等于第三阈值;或者,所述第二终端设备发送数据的优先级小于第五终端设备发送数据的优先级,所述M个PSSCH至少来自于所述第二终端设备和所述第五终端设备;或者,所述第二终端设备具有根据所述第一资源集合进行资源选择的功能,所述第五终端设备不具有根据所述第一资源集合进行资源选择的功能;或者,在所述第二终端设备和所述第五终端设备中,所述第二终端设备在所述第一时间单元发送数据的优先级最低。
- 根据权利要求33所述的装置,其特征在于,所述第一条件为在第二时间单元,所述第二终端设备存在向第三终端设备发送的数据,且所述第三终端设备存在向所述第二终端设备发送的数据;所述第一资源集合包括所述第二时间单元内第二终端预留的资源。
- 根据权利要求40所述的装置,其特征在于,所述处理模块具体用于:在确定第三条件满足时,将所述第一时刻之后第二时长内的时段确定为所述第一时段。
- 根据权利要求41所述的装置,其特征在于,所述第三条件包括如下条件中的至少一种:所述第二终端设备发送数据的优先级小于所述第三终端设备发送数据的优先级;或者,所述第二终端设备具有根据所述第一资源集合进行资源选择的功能。
- 根据权利要求26所述的装置,其特征在于,所述第一信息为所述资源重选操作;所述第一时段为所述第一终端设备进行资源重选操作之后第三时长内的时段。
- 根据权利要求43所述的装置,其特征在于,所述发送模块具体用于:在确定第四条件满足时,在所述第一时段内向第二终端设备发送第一资源集合。
- 根据权利要求44所述的装置,其特征在于,所述第四条件包括如下条件中的至少一种:所述第一终端设备进行资源重选操作后的预留资源中与所述第二终端设备的预留资源中存在重叠资源;或者,所述重叠资源与当前时刻之间的时间差大于或等于第四阈值;或者,所述第一终端设备发送数据的优先级大于所述第二终端设备发送数据的优先级;或者,所述第一终端设备发送数据的优先级大于或等于第五阈值,或者,所述第一终端设备进行资源选择或资源重选操作后选择的资源中的至少一个位于非连续接收DRX的激活时段内,所述DRX是为所述第一终端设备针对所述第一终端设备和所述第二终端设备之间的单播链路配置的。
- 根据权利要求43-45任一项所述的装置,其特征在于,所述发送模块具体用于:所述第一终端设备在第一时域资源上向所述第二终端设备发送所述第一资源集合,所述第一时域资源为所述第一终端设备进行资源重选操作后的预留资源中的第一个资源。
- 一种通信装置,其特征在于,包括接收模块和处理模块,其中,所述接收模块用于,在第一时段内接收来自第一终端设备的第一资源集合;所述处理模块用于,根据所述第一资源集合进行资源选择。
- 根据权利要求47所述的装置,其特征在于,所述第一时段为第一终端设备根据第一信息确定得到的,所述第一信息包括如下信息中的至少一种:所述第一终端设备从第二终端设备接收到的请求消息;或者,所述第一终端设备的侦听信息;或者,所述第一终端设备的资源重选操作。
- 一种终端设备,其特征在于,包括:收发器、处理器、存储器;所述存储器存储计算机执行指令;所述处理器执行所述存储器存储的计算机执行指令,使得所述处理器执行如权利要求1至22任一项所述的通信方法。
- 一种终端设备,其特征在于,包括:收发器、处理器、存储器;所述存储器存储计算机执行指令;所述处理器执行所述存储器存储的计算机执行指令,使得所述处理器执行如权利要求23至24任一项所述的通信方法。
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质中存储有计算机执行指令,当所述计算机执行指令被处理器执行时用于实现权利要求1至22任一项所述的通信方法,或者权利要求23至24任一项所述的通信方法。
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