WO2021204123A1 - 辅链路通信的资源选择方法及通信装置 - Google Patents

辅链路通信的资源选择方法及通信装置 Download PDF

Info

Publication number
WO2021204123A1
WO2021204123A1 PCT/CN2021/085710 CN2021085710W WO2021204123A1 WO 2021204123 A1 WO2021204123 A1 WO 2021204123A1 CN 2021085710 W CN2021085710 W CN 2021085710W WO 2021204123 A1 WO2021204123 A1 WO 2021204123A1
Authority
WO
WIPO (PCT)
Prior art keywords
resource
auxiliary
link resource
electronic device
secondary link
Prior art date
Application number
PCT/CN2021/085710
Other languages
English (en)
French (fr)
Inventor
曲鑫
Original Assignee
北京紫光展锐通信技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京紫光展锐通信技术有限公司 filed Critical 北京紫光展锐通信技术有限公司
Publication of WO2021204123A1 publication Critical patent/WO2021204123A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a resource selection method and communication device for auxiliary link communication.
  • V2X Vehicle-to-X communication is a key technical direction of the 16th (Release 16, R16) protocol.
  • NR V2X as an enhancement of Long Term Evolution (LTE) V2X, enables the Internet of Vehicles Key technical means.
  • V2X devices perform auxiliary link communication through a sidelink.
  • the first method is scheduled resource allocation.
  • the base station configures resources for the V2X device for auxiliary link communication.
  • This method is mainly used Mode 3 in LTE V2X communication and mode 1 in NR V2X communication; the second method is a resource selection method based on perception, which does not require base stations to schedule resources.
  • This method is mainly used in LTE V2X communication Mode4 and mode2 in NR V2X communication.
  • the V2X device receives the physical sidelink control channel (PSCCH) sent by other V2X devices in the resource perception window, determines the reserved resources of other V2X devices according to the PSCCH, and then obtains the resources from the resources. The process of excluding reserved resources from the selection window and selecting resources for auxiliary link communication from the remaining available resources.
  • PSCCH physical sidelink control channel
  • LTE V2X communication due to half-duplex reasons, the V2X device cannot receive the PSCCH sent by other V2X devices while sending the secondary link data, which causes the V2X device to be unable to exclude the reservation of other V2X devices in the resource selection window resource.
  • LTE V2X communication introduces a solution to exclude all possible reserved resources, that is, when a V2X device sends secondary link data in a certain time slot within the resource sensing window, it will be based on the time slot and all possible resources reserved.
  • the reserved period obtains a group of time slots, and for the time slots in the group of time slots that fall into the resource selection window, all frequency domain resources on these time slots will be excluded.
  • NR V2X communication supports a more flexible reservation period. If the method of excluding reserved resources in LTE V2X communication is continued, it will result in too few or no resources in the resource selection window, which will lead to NR V2X communication. fail.
  • the embodiments of the present application provide a resource selection method and communication device for auxiliary link communication.
  • a first electronic device sends auxiliary link auxiliary information to a second electronic device to inform the second electronic device of available or unavailable auxiliary link resources , So that the second electronic device selects resources for auxiliary link communication according to auxiliary link auxiliary information, and improves the communication success rate.
  • an embodiment of the present application provides a resource selection method for auxiliary link communication, including:
  • the first electronic device determines a first auxiliary link resource and a first reservation period, where the first reservation period is used to indicate a period in which the first auxiliary link resource is periodically reserved;
  • the first electronic device determines at least one second auxiliary link resource in the i-1th first reserved period and the second reserved period of each second auxiliary link resource, i ⁇ 2 and an integer ;
  • the first electronic device sends auxiliary link auxiliary information to the second electronic device on the first auxiliary link resource in the i-th first reserved period, and the auxiliary link auxiliary information is used to indicate the at least One second auxiliary link resource and a second reservation period of each of the second auxiliary link resources, and the i-th first reservation period is located within the resource perception window of the second electronic device.
  • the auxiliary link auxiliary information includes a first information field, a second information field, and third information Domain, wherein the first information domain is used to indicate the time domain position of the second secondary link resource, the second information domain is used to indicate the frequency domain position of the second secondary link resource, and the The third information field is used to indicate the second reservation period of the second secondary link resource.
  • the first information field carries indication information
  • the indication information is used to indicate a time slot offset
  • the time domain position is obtained by offsetting the first time slot by the time slot offset Yes
  • the first time slot is a time slot where the first secondary link resource in the i-1th first resource reservation period is located.
  • the second information field carries a resource identifier value RIV, and the RIV is used to indicate the starting subchannel of the second secondary link resource and the information contained in the second secondary link resource The number of subchannels; or, the second information field carries a bitmap, and the bitmap is used to indicate the range of subchannels included in the second secondary link resource.
  • the third information field carries indication information of a preset length, and different indication information is used to indicate different reservation periods.
  • the above method further includes: the first electronic device determines the number of reservations N of the first auxiliary link resource, the 2 ⁇ i ⁇ N, and the N is an integer; After the number of reservations for the first reservation period, the first electronic device re-determines the first secondary link resource and the first reservation period, and the number of reservations N is configured by the network. N ⁇ 1 and is an integer.
  • the first electronic device determining the first auxiliary link resource and the first reservation period includes: the first electronic device determines the first auxiliary link resource and the first reservation period through the new wireless mode 2. The first reservation period; or, the first electronic device receives configuration information sent by a network device, where the configuration information is used to indicate the first auxiliary link resource configured or pre-configured by the network device.
  • the first electronic device determines at least one second auxiliary link resource in the i-1th first reservation period and the second reservation period of each of the second auxiliary link resources , Including: the first electronic device determines at least one target time slot from the i-1th first reserved period, where the target time slot is sent by both the second electronic device and the at least one third electronic device The time slot where the secondary link resource of the secondary link data is located; the first electronic device determines the at least one first reserved period from the i-1th first reserved period according to the at least one target time slot Two secondary link resources and the second reservation period of each of the second secondary link resources.
  • the at least one second secondary link resource is within the i-1th first reserved period, except for the first secondary link resource and each of the target time slots One or more of other auxiliary link resources.
  • the at least one second secondary link resource is the secondary link resource on the first secondary link resource or each target time slot in the i-1th first reserved period. Link resources.
  • an embodiment of the present application provides a resource selection method for auxiliary link communication, including:
  • the second electronic device receives auxiliary link auxiliary information from the first electronic device on the first auxiliary link resource in the i-th first reserved period, where the auxiliary link auxiliary information is used to indicate the i-th -1 at least one second secondary link resource in the first reservation period and the second reservation period of each of the second secondary link resources, the i-th first reservation period is located in the second In the resource perception window of the electronic device, i ⁇ 2 and an integer;
  • the second electronic device selects a resource for auxiliary link communication from the resource selection window according to the at least one second auxiliary link resource and each of the second reservation periods, and the resource The selection time is located after the resource awareness window and before the resource selection window.
  • the auxiliary link auxiliary information includes a first information field, a second information field, and third information Domain, where the first information field is used to indicate the time domain position of the second secondary link resource, the second information field is used to indicate the frequency domain position of the second secondary link resource, and The third information field is used to indicate the second reservation period of the second secondary link resource.
  • the first information field carries indication information
  • the indication information is used to indicate a time slot offset
  • the time domain position is obtained by offsetting the first time slot by the time slot offset Yes
  • the first time slot is a time slot where the first secondary link resource in the i-1th first resource reservation period is located.
  • the second information field carries a resource identifier value RIV, and the RIV is used to indicate the starting subchannel of the second secondary link resource and the information contained in the second secondary link resource The number of subchannels; or, the second information field carries a bitmap, and the bitmap is used to indicate the range of subchannels included in the second secondary link resource.
  • the third information field carries indication information of a preset length, and different indication information is used to indicate different reservation periods.
  • the second electronic device selects for the auxiliary link from the resource selection window according to the at least one second auxiliary link resource and each of the second reservation periods Communication resources include: when the at least one second secondary link resource is within the i-1th first reserved period, except for the first secondary link resource and the secondary link on the target time slot When one or more of the other auxiliary link resources outside the resource, the second electronic device, at the resource selection moment, according to at least one second auxiliary link resource in the i-1th first reserved period And the second reservation period of each of the second auxiliary link resources, the reserved second auxiliary link resource is determined from the resource selection window, and the target time slot is the second electronic device and at least The time slot in which the secondary link resource of the secondary link data sent by a third electronic device is located, and the target time slot is at least one; the second secondary link resource reserved in the resource selection window is selected for Resources for auxiliary link communication.
  • the second electronic device selects for the auxiliary link from the resource selection window according to the at least one second auxiliary link resource and each of the second reservation periods Communication resources, including:
  • the second secondary link resource When the at least one second secondary link resource is the secondary link resource on the first secondary link resource or the target time slot in the i-1th first reserved period, the second secondary link resource At the resource selection moment, the electronic device uses at least one second secondary link resource in the i-1th first reservation period and the second reservation period of each of the second secondary link resources from the The reserved second auxiliary link resource is determined in the resource selection window, and the target time slot is the time slot in which the auxiliary link resource for both the second electronic device and at least one third electronic device to send auxiliary link data is located , The target time slot is at least one; the resource used for auxiliary link communication is selected from other auxiliary link resources other than the reserved second auxiliary link resource in the resource selection window.
  • an embodiment of the present application provides a communication device, including:
  • a processing unit configured to determine a first secondary link resource and a first reservation period, where the first reservation period is used to indicate the period of the first secondary link resource, and determine the i-1th first reservation At least one second auxiliary link resource in the period and the second reservation period of each of the second auxiliary link resources, i ⁇ 2 and an integer;
  • the transceiver unit is configured to send auxiliary link auxiliary information to the second electronic device on the first auxiliary link resource in the i-th first reserved period, where the auxiliary link auxiliary information is used to indicate the at least one A second reservation period of the second auxiliary link resource and each of the second auxiliary link resources, and the i-th first reservation period is located within the resource sensing window of the second electronic device.
  • the auxiliary link auxiliary information includes a first information field, a second information field, and third information Domain, wherein the first information domain is used to indicate the time domain position of the second secondary link resource, the second information domain is used to indicate the frequency domain position of the second secondary link resource, and the The third information field is used to indicate the second reservation period of the second secondary link resource.
  • the first information field carries indication information
  • the indication information is used to indicate a time slot offset
  • the time domain position is obtained by offsetting the first time slot by the time slot offset Yes
  • the first time slot is a time slot where the first secondary link resource in the i-1th first resource reservation period is located.
  • the second information field carries a resource identifier value RIV, and the RIV is used to indicate the starting subchannel of the second secondary link resource and the information contained in the second secondary link resource The number of subchannels; or, the second information field carries a bitmap, and the bitmap is used to indicate the range of subchannels included in the second secondary link resource.
  • the third information field carries indication information of a preset length, and different indication information is used to indicate different reservation periods.
  • the processing unit is further configured to determine the number of reservations N of the first secondary link resource, where 2 ⁇ i ⁇ N, where N is an integer, and the number of reservations is After the first reservation period, the first secondary link resource and the first reservation period are re-determined, the number of reservations N is configured by the network, and the N ⁇ 1 and is an integer.
  • the processing unit determines the first secondary link resource and the first reservation period, it is used to determine the first secondary link resource and the first reservation period through the new radio mode 2.
  • the processing unit determines the first secondary link resource and the first reservation period, it is used to determine the first secondary link resource and the In the first reservation period, the configuration information is used to indicate the first secondary link resource configured or pre-configured by the network device.
  • the processing unit determines at least one second secondary link resource in the i-1th first reservation period and the second reservation period of each of the second secondary link resources , Used to determine at least one target time slot from the i-1th first reserved period, where the target time slot is the auxiliary link data sent by both the second electronic device and the at least one third electronic device
  • the time slot in which the link resource is located, the at least one second secondary link resource and each of the second secondary links are determined from the i-1th first reserved period according to the at least one target time slot
  • the second reservation period of the link resource when the processing unit determines at least one second secondary link resource in the i-1th first reservation period and the second reservation period of each of the second secondary link resources , Used to determine at least one target time slot from the i-1th first reserved period, where the target time slot is the auxiliary link data sent by both the second electronic device and the at least one third electronic device
  • the time slot in which the link resource is located, the at least one second secondary link resource and each of the second secondary links are determined from the
  • the at least one second secondary link resource is within the i-1th first reserved period, except for the first secondary link resource and each of the target time slots One or more of other auxiliary link resources.
  • the at least one second secondary link resource is the secondary link resource on the first secondary link resource or each target time slot in the i-1th first reserved period. Link resources.
  • an embodiment of the present application provides a communication device, including:
  • the transceiver unit is configured to receive auxiliary link auxiliary information from the first electronic device on the first auxiliary link resource in the i-th first reserved period, where the auxiliary link auxiliary information is used to indicate the first auxiliary link resource At least one second secondary link resource in the i-1 first reservation period and the second reservation period of each of the second secondary link resources, the i-th first reservation period is located in the first reservation period 2.
  • i In the resource perception window of the electronic device, i ⁇ 2 and an integer;
  • a processing unit configured to select a resource for auxiliary link communication from a resource selection window according to the at least one second auxiliary link resource and each of the second reservation periods at the time of resource selection, and the resource selection The time is after the resource awareness window and before the resource selection window.
  • the auxiliary link auxiliary information includes a first information field, a second information field, and third information Domain, where the first information field is used to indicate the time domain position of the second secondary link resource, the second information field is used to indicate the frequency domain position of the second secondary link resource, and The third information field is used to indicate the second reservation period of the second secondary link resource.
  • the first information field carries indication information
  • the indication information is used to indicate a time slot offset
  • the time domain position is obtained by offsetting the first time slot by the time slot offset Yes
  • the first time slot is a time slot where the first secondary link resource in the i-1th first resource reservation period is located.
  • the second information field carries a resource identifier value RIV, and the RIV is used to indicate the starting subchannel of the second secondary link resource and the information contained in the second secondary link resource The number of subchannels; or, the second information field carries a bitmap, and the bitmap is used to indicate the range of subchannels included in the second secondary link resource.
  • the third information field carries indication information of a preset length, and different indication information is used to indicate different reservation periods.
  • the processing unit when the at least one second secondary link resource is within the i-1th first reserved period, except for the first secondary link resource and the target
  • the processing unit when one or more of the auxiliary link resources on the slot are other auxiliary link resources, it is specifically used to, at the time of resource selection, according to at least one second auxiliary link in the i-1th first reserved period Link resources and the second reservation period of each of the second auxiliary link resources, the reserved second auxiliary link resource is determined from the resource selection window, and the target time slot is the second electronic
  • the device and the at least one third electronic device both send the time slot of the secondary link resource of the secondary link data, and the target time slot is at least one; from the second secondary link resources reserved in the resource selection window Select the resources used for auxiliary link communication.
  • the processing unit when the at least one second secondary link resource is within the i-1th first reserved period, the first secondary link resource or the target time slot
  • the secondary link resource on the upper side is used, it is specifically used at the resource selection moment, according to at least one second secondary link resource and each of the second secondary link resources in the i-1th first reservation period In the second reservation period, the reserved second auxiliary link resource is determined from the resource selection window, and the target time slot is that both the second electronic device and at least one third electronic device send auxiliary link data
  • the time slot where the secondary link resource is located, the target time slot is at least one, and the secondary link resource is selected from other secondary link resources other than the reserved second secondary link resource in the resource selection window for the secondary link Resources for communication.
  • an embodiment of the present application provides an electronic device, including a processor, a memory, and a computer program stored on the memory and capable of running on the processor.
  • the processor executes the program, the electronic device The device implements the method in the above first aspect or various possible implementation manners of the first aspect.
  • an embodiment of the present application provides an electronic device, including a processor, a memory, and a computer program stored on the memory and capable of running on the processor.
  • the processor executes the program, the electronic device The device implements the method in the above second aspect or various possible implementation manners of the second aspect.
  • the embodiments of the present application provide a computer program product containing instructions, which when run on an electronic device, cause the electronic device computer to execute the above-mentioned first aspect or the methods in the various possible implementations of the first aspect .
  • the embodiments of the present application provide a computer program product containing instructions that, when run on an electronic device, cause the electronic device computer to execute the above-mentioned second aspect or the methods in the various possible implementations of the second aspect .
  • an embodiment of the present application provides a readable storage medium that stores instructions in the readable storage medium, which when run on an electronic device, causes the electronic device to execute the above-mentioned first aspect or the first aspect.
  • an embodiment of the present application provides a readable storage medium that stores instructions in the readable storage medium, which when run on an electronic device, causes the electronic device to execute the above-mentioned second aspect or the second aspect Methods in various possible implementations.
  • the first electronic device determines the first auxiliary link resource and the first reservation period, and at least one first in each first reservation period Two auxiliary link resources and the second reservation period of each second auxiliary link resource. After that, the first electronic device sends auxiliary link resource auxiliary information on the first auxiliary link resource in the current first reservation period, and the auxiliary link auxiliary information is used to indicate which auxiliary link resources have been reserved or Which auxiliary link resources are not reserved.
  • the second electronic device After the second electronic device receives each auxiliary link auxiliary information, according to the second auxiliary link resource indicated by each auxiliary link auxiliary information in the resource perception window and the second reservation period of each second auxiliary link resource, The auxiliary link resources periodically reserved by other devices are excluded from the resource selection window, and the auxiliary link communication resources are selected from the remaining auxiliary link resources.
  • the second electronic device since the at least one second auxiliary link resource is determined according to the auxiliary link resource of the half-duplex communication, the second electronic device can be based on the at least one second auxiliary link resource and each second auxiliary link resource.
  • the second reservation period excludes resources used for half-duplex communication from the secondary link resource pool. Therefore, the embodiment of the present application can achieve the purpose of reducing half-duplex influence by periodically sending secondary link auxiliary information.
  • Figure 1A is a schematic diagram of a sensing-based resource selection method in LTE V2X communication
  • Figure 1B is a schematic diagram of another sensing-based resource selection method in LTE V2X communication
  • 2A is a schematic diagram of a network architecture to which the method for selecting communication resources of a secondary link provided by an embodiment of the present application is applicable;
  • 2B is a schematic diagram of a network architecture to which the method for selecting communication resources of a secondary link provided by an embodiment of the present application is applicable;
  • FIG. 3 is a flowchart of a method for selecting resources for auxiliary link communication according to an embodiment of the present application
  • FIG. 4 is a schematic diagram of a resource pool in a resource selection method for auxiliary link communication provided by an embodiment of the present application
  • FIG. 5 is a schematic diagram of selecting auxiliary link resources by using the resource selection method for auxiliary link communication provided by an embodiment of the present application
  • FIG. 6 is a schematic diagram of a frequency domain representation in a resource selection method for secondary link communication provided by an embodiment of the present application
  • FIG. 7 is a schematic diagram of changes in the first reservation period in the resource selection method for secondary link communication provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a resource selection method for auxiliary link communication provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 11 is a schematic structural diagram of an electronic device provided by an embodiment of the application.
  • the resource allocation method is divided into a scheduling resource allocation method and a perception-based resource selection method.
  • scheduling resource allocation methods include mode 3 in LTE V2X communication and mode 1 in NR V2X communication
  • sensing-based resource selection methods include mode 4 in LTE V2X communication and mode 2 in NR V2X communication.
  • Fig. 1A is a schematic diagram of a sensing-based resource selection method in LTE V2X communication.
  • V2X device 1 sends PSCCH while sending secondary link data on time slot n-k1.
  • the PSCCH indicates that the reserved period is P1; in the same way, V2X device 2 sends secondary link on time slot n-k1 PSCCH is sent at the same time as the channel data, and the PSCCH indicates that the reserved period is P2.
  • V2X device 3 receives the PSCCH of V2X device 1 in time slot n-k1, and determines the resources periodically reserved by V2X device 1 based on the PSCCH, as shown in the square fill in the figure; similarly, V2X device 3 is in time The PSCCH of the V2X device 2 is received on the slot n-k1, and the resources periodically reserved by the V2X device 2 are determined according to the PSCCH, as shown in the vertical line filling part in the figure.
  • V2X device 3 selects the secondary link resource in time slot n, according to the sensing result in the resource sensing window, the reserved resources of V2X device 1 and V2X device 2 are excluded from the resource selection window, and the remaining resources are selected Resources used for auxiliary link communication.
  • the V2X device adopts a half-duplex communication mode, that is, the V2X device cannot receive PSCCH sent by other V2X devices while sending auxiliary link data.
  • V2X device 3 also sends secondary link data on time slot n-K1 (as shown in the dot filling part in Figure 1B), it will cause V2X device 3 to fail to receive V2X device 1 and V2X device 2.
  • PSCCH causes the V2X device 3 to be unable to exclude the reserved resources of the V2X device 1 and the V2X device 2 from the resource selection window, thereby causing resource collisions.
  • LTE V2X communication proposes a solution for excluding all reserved resources corresponding to the reservation period. For example, see Figure 1B.
  • Fig. 1B is a schematic diagram of another sensing-based resource selection method in LTE V2X communication.
  • the V2X device 1, the V2X device 2, and the V2X device 3 all send secondary link data in the time slot n-k1, that is, the time domain resources of the three V2X devices are the same but the frequency domain resources are different.
  • the V2X device 3 reselects the secondary link resource in time slot n.
  • V2X equipment 3 calculates the 17 time slots that may be occupied by periodically reserved resources according to time slot n-k1 and 17 reservation cycles.
  • NR V2X communication also has half-duplex problems.
  • NR V2X communication supports more flexible reserved periods, such as 0, [1:99], 100ms, 200ms, 300ms, 400ms, 500ms, 600ms, 700ms, 800ms, 900ms, 1000ms. If the method of excluding all possible reserved periods in FIG. 1B is adopted, it will result in too few resources or no resources to choose from in the resource selection window. Especially when the reservation period is [1:99], all resources in the resource selection window may be excluded. Obviously, the method shown in Figure 1B above is not suitable for NR V2X communication.
  • embodiments of the present application provide a resource selection method and communication device for auxiliary link communication.
  • the first electronic device informs the second electronic device which auxiliary link resources have been reserved or which auxiliary link resources have been reserved through auxiliary link auxiliary information.
  • the auxiliary link resources are not reserved to assist the second electronic device in reducing the impact of half-duplex in resource selection.
  • the first electronic device sends auxiliary link auxiliary information to the second electronic device to inform which auxiliary link resources in the resource pool of the second electronic device are reserved or which auxiliary link resources are not reserved, thereby helping The second electronic device selects auxiliary link resources.
  • auxiliary link resources For example, one NR V2X device among multiple NR V2X devices sharing a resource pool is used as the first electronic device, and the remaining NR V2X devices are used as the second electronic device.
  • the second electronic device needs to select a device used for auxiliary link resources for auxiliary link communication.
  • the resource selection method based on perception is used in combination with the received auxiliary link auxiliary information to perform the auxiliary link resource selection.
  • FIG. 2A is a schematic diagram of a network architecture to which the method for selecting communication resources of a secondary link provided by an embodiment of the present application is applicable.
  • the network architecture includes a first electronic device and at least one second electronic device.
  • both the first electronic device and the second electronic device can communicate using sidelinks.
  • the auxiliary links can also be called direct links, unilateral links, etc., and auxiliary link communication can also be called direct links. Communication etc.
  • the first electronic device may perform auxiliary link communication with any second electronic device; for another example, each second electronic device may communicate through the auxiliary link.
  • Both the first electronic device and the second electronic device can apply resources in the auxiliary link resource pool.
  • the resources in the auxiliary link resource pool are network configured or pre-configured.
  • FIG. 2B is a schematic diagram of a network architecture to which the method for selecting communication resources of a secondary link provided in an embodiment of the present application is applicable.
  • NR V2X communication includes communication between vehicle and vehicle (V2V), communication between vehicle and roadside infrastructure (V2I), vehicle and pedestrian (vehicle to pedestrian, The communication between V2P), the communication between vehicles and the network (V2N), etc.
  • V2X vehicle-to-everything communication.
  • the first electronic device is, for example, any one of a vehicle, a pedestrian's electronic device, a road side unit (RSU), etc.
  • the second electronic device is a vehicle, a pedestrian's electronic device, or a road side unit (Road Side Unit, RSU). ), etc.
  • Fig. 3 is a flowchart of a method for selecting resources for secondary link communication provided by an embodiment of the present application, and this embodiment includes:
  • the first electronic device determines a first auxiliary link resource and a first reservation period.
  • the first reserved period is used to indicate the number of time slots between two adjacent first secondary link resources.
  • the first auxiliary link resource is the auxiliary link resource used by the first electronic device to send auxiliary link auxiliary information
  • the first reservation period is the first auxiliary link resource reserved by the first electronic device The reserved period.
  • FIG. 4 is a schematic diagram of a resource pool in a resource selection method for auxiliary link communication provided in an embodiment of the present application.
  • a minimum resource unit of the resource pool (shown as the black fill in Figure 4) is called a subchannel (subchannel), a subchannel occupies a slot in the time domain, in the frequency domain
  • the first auxiliary link resource includes at least one subchannel.
  • Fig. 5 is a schematic diagram of selecting auxiliary link resources by using the resource selection method for auxiliary link communication provided in an embodiment of the present application.
  • the slash-filled part represents the first auxiliary link resource
  • the first reserved period T is 4 time slots, which means that there are 4 time slots between every two first auxiliary link resources in the time domain. That is to say, the first secondary link resource exists in one of every four time slots.
  • the first electronic device may determine the first auxiliary link resource from the resource pool by using a resource selection method based on perception.
  • the first electronic device uses mode 2 of NR V2X to determine the first link resource and the first reservation period from the resource pool.
  • a group of first auxiliary link resources is obtained according to the initial first auxiliary link resources and the first reservation period.
  • the time domain position of the first auxiliary link resource is time slot nk-4a (time slot nk-4a is not shown in the figure)
  • the frequency domain position is the cdth subchannel
  • the first reserved period is x time slots , Where a ⁇ 1 and an integer, 0 ⁇ c ⁇ d, c and d are integers, and x ⁇ 1.
  • the first electronic device receives configuration information sent by a network device, where the configuration information is used to indicate the first auxiliary link resource configured or pre-configured by the network device.
  • the network device may be a gNB in 5G, an eNB in LTE, etc., which is not limited in the embodiment of the present application.
  • the configuration information indicates the time domain position, the frequency domain position, and the first reservation period of the first secondary link resource.
  • the time domain position is the time slot nk-4a (the time slot nk-4a is not shown in the figure)
  • the frequency domain position is the cdth subchannel
  • the first reserved period is x time slots, where a ⁇ 1 and Is an integer, 0 ⁇ c ⁇ d, c and d are integers, and x ⁇ 1.
  • the first electronic device when the first electronic device sends auxiliary link auxiliary information by broadcast, or when the first electronic device sends auxiliary link auxiliary information to multiple second electronic devices in a multicast group by multicast , There is only one first auxiliary link resource in each first period. At this time, in each first reserved period, the first electronic device broadcasts or multicasts auxiliary link auxiliary information on the first auxiliary link resource.
  • the first electronic device when the first electronic device sends auxiliary link auxiliary information in unicast mode, at this time, the first electronic device needs to determine the first auxiliary link resource for each second electronic device, and different second electronic devices The first auxiliary link resources are different.
  • the first electronic device determines at least one second auxiliary link resource in the i-1th first reservation period and the second reservation period of each of the second auxiliary link resources, i ⁇ 2 and an integer .
  • the quantity of at least one second secondary link resource is configured or pre-configured by the network, or indicated by means of dynamic signaling.
  • the time slot in which the at least one second secondary link resource is located may be the same as the time slot in which the secondary link resource for sending the secondary link data by the second electronic device in the i-1th first reserved period is located. Since the second electronic device sends the auxiliary link data in the time slot where the second auxiliary link resource is located, the second electronic device cannot receive the auxiliary link data, such as PSCCH, sent by other devices in this time slot. At this time, At least one second secondary link resource is equivalent to an unavailable resource. Therefore, the first electronic device sends the relevant information of the at least one second auxiliary link resource to the second electronic device through auxiliary link auxiliary information, so that the second electronic device can exclude the second auxiliary link resources from the resource selection window. Reserved resources for link resources.
  • the time slot in which at least one second secondary link resource is located is different from the time slot in which the second electronic device transmits secondary link data in the i-1th first reserved period, because the second The electronic device does not send auxiliary link data in the time slot where the second auxiliary link resource is located. Therefore, the second electronic device can receive auxiliary link data, such as PSCCH, sent by other devices on the second auxiliary link resource. At this time, at least one second secondary link resource is equivalent to an available resource.
  • the first electronic device sends the relevant information of the at least one second auxiliary link resource to the second electronic device through auxiliary link auxiliary information, so that the second electronic device can select for use from the second auxiliary link resources Resources for auxiliary link communication.
  • the first electronic device sends auxiliary link auxiliary information to the second electronic device on the first auxiliary link resource in the i-th first reserved period, where the auxiliary link auxiliary information is used to indicate all
  • the at least one second auxiliary link resource and the second reservation period of each of the second auxiliary link resources, the i-th first reservation period is located within the resource perception window of the second electronic device.
  • auxiliary link auxiliary information may be carried on the auxiliary link control channel or the auxiliary link data channel.
  • step 102 and step 103 for any two adjacent first reserved periods, hereinafter referred to as the i-1 first reserved period and the i-th first reserved period, An electronic device determines at least one second auxiliary link resource and the second reservation period of each second auxiliary link resource in the (i-1)th first reservation period. In this way, at least one second auxiliary link resource and the second reservation period of each second auxiliary link resource in each first reservation period can be determined.
  • the first electronic device reserves the i-th first reservation period
  • the auxiliary link auxiliary information is sent on the first auxiliary link resource in the period.
  • the second electronic device selects a resource for auxiliary link communication from the resource selection window according to the at least one second auxiliary link resource and each of the second reservation periods, so The resource selection moment is located after the resource awareness window and before the resource selection window.
  • the second electronic device selects the resource for the auxiliary link communication from the resource selection window according to the sensing result in the resource sensing window when initializing or reselecting the auxiliary link resource in the time slot n.
  • the perception result comes from two aspects: the first aspect, the second electronic device excludes the resources periodically reserved by other electronic devices from the resource selection window based on the perception method; the second aspect, the second electronic device The auxiliary link information received in the sensing window excludes the resources of duplex communication from the resource selection window. For example, in FIG.
  • the first electronic device sends the auxiliary link auxiliary information on the first auxiliary link resource in each first reserved period, and the 6 first auxiliary link resources in the first auxiliary link resources
  • the link resources are located in the second resource perception window, such as the 6 first auxiliary link resources marked 1-6 in the figure. Therefore, the second electronic device receives the auxiliary link auxiliary information on each of the six first auxiliary link resources, and receives a total of 6 auxiliary link auxiliary information.
  • the second electronic device determines the reserved second auxiliary link from the resource selection window according to the second auxiliary link resource indicated by the auxiliary link auxiliary information and the second reservation period of each second auxiliary link resource Resources, and further exclude resources that cannot be determined by the second electronic device due to the occurrence of duplex communication based on the reserved second auxiliary link resources.
  • auxiliary link auxiliary information may be specifically determined according to the length of the resource perception window of the second electronic device, the length of the first reservation period of the first auxiliary link resource, and the like.
  • the first electronic device determines the first auxiliary link resource and the first reservation period, and at least one second auxiliary link in each first reservation period Channel resources and the second reservation period of each second auxiliary link resource. After that, the first electronic device sends auxiliary link resource auxiliary information on the first auxiliary link resource in the current first reservation period, and the auxiliary link auxiliary information is used to indicate which auxiliary link resources have been reserved or Which auxiliary link resources are not reserved.
  • the second electronic device After the second electronic device receives each auxiliary link auxiliary information, according to the second auxiliary link resource indicated by each auxiliary link auxiliary information in the resource perception window and the second reservation period of each second auxiliary link resource, The auxiliary link resources periodically reserved by other devices are excluded from the resource selection window, and the auxiliary link communication resources are selected from the remaining auxiliary link resources.
  • the second electronic device since the at least one second auxiliary link resource is determined according to the auxiliary link resource of the half-duplex communication, the second electronic device can be based on the at least one second auxiliary link resource and each second auxiliary link resource.
  • the second reservation period excludes resources used for half-duplex communication from the secondary link resource pool. Therefore, the embodiment of the present application can achieve the purpose of reducing half-duplex influence by periodically sending secondary link auxiliary information.
  • the auxiliary link auxiliary information includes a first information field, a second information field, and third information Domain, wherein the first information domain is used to indicate the time domain position of the second secondary link resource, the second information domain is used to indicate the frequency domain position of the second secondary link resource, and the The third information field is used to indicate the second reservation period of the second secondary link resource.
  • a first reserved period is 4 time slots
  • the first secondary link resource is located on the first time slot of the 4 time slots
  • the second secondary link resource may be It is located on any one or more of the remaining 3 time slots; the frequency domain position and the second reserved period of different second auxiliary link resources may also be different. Therefore, for each second secondary link resource, it is necessary to indicate the time domain position, the frequency domain position, and the second reservation period of the second secondary link resource.
  • the first information field of the auxiliary link auxiliary information carries indication information, and the indication information is used to indicate a time slot offset, and the time domain position is to offset the first time slot from the time slot offset. Obtained after the shift, the first time slot is the time slot where the first secondary link resource in the i-1th first resource reservation period is located.
  • the i-th first reserved period includes time slot nk-4, time slot nk-3, time slot nk-2, Time slot nk-1.
  • the first auxiliary link resource is located on time slot nk-4, time slot nk-3, time slot nk-2, and time slot nk-1 respectively offset time slot nk-4 by 1, 2 And 3 got it. Therefore, the time domain position of the second secondary link resource can be indicated by the time slot offset. For example, if the time slot offset is 2 time slots, it means that the second auxiliary link resource is located in time slot n-k-2.
  • the indication information may indicate the time slot offset through a bitmap or other methods.
  • the bitmap When the bitmap is used to indicate the time slot offset, let the length of the bitmap be T, and the length T is the same as the length of the first reserved period. Mark the time slot where the first auxiliary link resource in a first reserved period is located as time slot t. When the nth bit from high to low in the bitmap is 1, it means the second auxiliary link The slot position where the path resource is located is t+n-1.
  • the i-th first reserved period includes time slot nk-4, time slot nk-3, time slot nk-2, and time slot nk-1.
  • the length of the bitmap is 4 bits, assuming 1000 , 0100, 0010, and 0001 respectively represent time slot nk-4, time slot nk-3, time slot nk-2, and time slot nk-1.
  • the bitmap is 0100, that is, when the second bit from high to low in the bitmap is 1
  • the second electronic device can determine the first auxiliary link resource In the time slot, the time domain position of the second auxiliary link resource is determined according to the first indication field of the auxiliary link auxiliary information.
  • log 2 T bit values can also be used to represent T values, and each value represents a different time slot offset.
  • the first secondary link resource is located in time slot nk-4, 00, 01, 10, and 11 can be used to represent time slot nk-4, time slot nk-3, time slot nk-2, and time slot nk-1, respectively.
  • the first information field is 10
  • it means that the time slot nk-4 where the first auxiliary link resource is located is shifted by 2 time slots to the right to obtain the time domain position of the second auxiliary link resource.
  • the second information field carries a resource identifier value RIV, and the RIV is used to indicate the starting subchannel of the second secondary link resource and the number of subchannels included in the second secondary link resource.
  • the total number of bits required for the resource indicator value (RIV) indication method is log 2 [L(L+1)/2].
  • the second information field carries a bitmap, and the bitmap is used to indicate the range of subchannels included in the second secondary link resource.
  • FIG. 6 is a schematic diagram of frequency domain representation in the resource selection method for secondary link communication provided by an embodiment of the present application.
  • the total number of sub-channels in the resource pool is L, and all sub-channels in the resource pool are divided into N points to obtain N parts.
  • each bit indicates one of them.
  • 1000, 0100, 0010, and 0001 represent the first part, the second part, the third part, and the first part, respectively.
  • Four parts are possible.
  • log 2 N bit values may also be used to represent N values, and N is configured or pre-configured by the network.
  • the third information field of the auxiliary link auxiliary information carries indication information of a preset length, and different indication information is used to indicate different reservation periods.
  • the cycles supported by NR V2X are 0, [1:99], 100ms, 200ms, 300ms, 400ms, 500ms, 600ms, 700ms, 800ms, 900ms, 1000ms.
  • [1:99] represents a total of 99 values of 1ms, 2ms...99ms.
  • the 16 second reserved periods can be represented by 4 bits. Therefore, the first electronic device writes 4 bits in the third information field, such as 0001. After receiving the auxiliary link auxiliary information, the second electronic device can determine the first 0001 represented by the 16 second reserved periods. 2. Reserved period.
  • the first reservation period of the first secondary link resource is not static.
  • FIG. 7 is a schematic diagram of changes in the first reservation period in the method for selecting resources for secondary link communication according to an embodiment of the present application.
  • the auxiliary link information sent by the first electronic device is carried by the auxiliary link control channel or the auxiliary link data channel, and the first auxiliary link resource used to send the auxiliary link auxiliary information is carried by the first electronic device
  • the first reservation period is T, for example, 4 time slots. Because the resources reserved in mode2 have reservation times.
  • the first electronic device finds that the number of times the first auxiliary link resource is reserved is 0, that is, the first electronic device cannot continue to use the latest mode 2 sensed and selected
  • the first auxiliary link resources, the first reserved resources are shown in the hatched part in the figure. At this time, the first electronic device re-selects resources and reserves resources, and the re-selected first auxiliary link resource is shown in the figure.
  • the first electronic device determines at least one second auxiliary link resource in the i-1th first reserved period and the second reserved period of each of the second auxiliary link resources, it starts from the first In the i-1 first reserved period, at least one target time slot is determined, and the target time slot is the time slot where the secondary link resource used by the second electronic device and the at least one third electronic device to send the secondary link data is located.
  • the first electronic device determines the value of the at least one second auxiliary link resource and each of the second auxiliary link resources from the i-1th first reserved period according to at least one target time slot. The second reserved period.
  • the third electronic device and the first electronic device may be the same device or different devices.
  • the first electronic device determines the target time slot, and the auxiliary link resource on the target time slot can be called a half-duplex resource, that is, the second electronic device and at least one third electronic device both send the auxiliary link in the same time slot.
  • the second electronic device can determine the second auxiliary link resource and the second auxiliary link resource from the i-1th first reserved period according to the target time slot. 2. Reserved period. For example, if the first electronic device notifies the second electronic device of the unavailable resources in the i-1th first reserved period, the first electronic device directly sends the relevant information of the target time slot to the second electronic device via the auxiliary link auxiliary information The second electronic device. For another example, if the first electronic device notifies the second electronic device of the available resources in the i-1th first reservation period, the first electronic device will send each target time slot and other resources other than the first auxiliary link resource The related information is sent to the second electronic device through the auxiliary link auxiliary information.
  • the second electronic device selects resources for auxiliary link communication according to the auxiliary link auxiliary information of the first electronic device.
  • the second electronic device selects auxiliary link resources based on the perceived resource selection method and combined with the received auxiliary link auxiliary information.
  • how the second electronic device selects auxiliary link resources based on the perceived resource selection method and combined with the received auxiliary link auxiliary information. For example, see Figure 8.
  • Fig. 8 is a schematic diagram of a resource selection method for auxiliary link communication provided by an embodiment of the present application.
  • the other electronic devices are electronic devices other than the second electronic device, and the second electronic device is in the time slot n for the auxiliary link resource selection, then the second electronic device selects the auxiliary link communication in the resource selection window Secondary link resources.
  • the start time domain position of the resource selection window is n+T 1
  • the end time domain position of the resource selection window is n+T2.
  • T1 depends on the user's realization and needs to satisfy 0 ⁇ T1 ⁇ T proc, 1
  • T2 depends on the user Achieve and satisfy the packet delay budget (PDB) which is smaller than the remaining packet delay budget (packet delay budget, PDB), where T proc, 1 is the user data processing time.
  • PDB packet delay budget
  • the second electronic device excludes the auxiliary link resources occupied by other users from the resource selection window according to the sensing result in the resource perception window, and finally reports Z% of the total number of candidate resources in the resource selection window.
  • a resource is randomly selected for auxiliary link communication.
  • the value of Z is, for example, 20.
  • the embodiment of the present application is not limited, and other values can be determined according to subsequent discussion and added.
  • the time domain range of the resource awareness window is [nX, n], and x is the network configuration or pre-configuration, which is selected between 1100 milliseconds and 100 milliseconds.
  • NR V2X communication supports periodic reservation of resources and multiple transmission reservations.
  • Periodically reserve resources As shown in Figure 8, after other electronic devices select resource 1 as the transmission resource, they will transmit PSCCH and secondary link physical layer data channel (physical sidelink shared channel, PSSCH) on resource 1.
  • the PSCCH carries a period indicator field, which indicates that the corresponding resource after the period of the resource interval is occupied by the electronic device.
  • the second electronic device receives the PSCCH on resource 1 and successfully decodes it, it can know which resource is also reserved and occupied by other electronic devices.
  • the second electronic device selects resources in the resource selection window, The resources that have been reserved and occupied can be excluded to avoid collisions of transmission resources.
  • NR V2X also supports multiple transmission reservation resources based on blind retransmission and hybrid automatic repeat reQuest (HARQ).
  • HARQ hybrid automatic repeat reQuest
  • the second electronic device receives the PSCCH on resource 1 and successfully decodes it, it can know that resource 2 and resource 3 are also occupied by other electronic devices, and the second electronic device can exclude already occupied when selecting resources To avoid collisions of transmission resources.
  • the second electronic device excludes periodic reserved resources and multi-transmission reserved resources in NR V2X communication, and also excludes half-duplex resources based on auxiliary link auxiliary information. It can be seen that: in the embodiment of the present application, when the second electronic device selects the auxiliary link resource, it uses the perception-based resource selection method and combined with the received auxiliary link auxiliary information to perform the auxiliary link resource selection.
  • FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • the communication device 100 can be implemented in software and/or hardware. As shown in FIG. 9, the communication device 100 includes:
  • the processing unit 11 is configured to determine a first secondary link resource and a first reservation period, where the first reservation period is used to indicate the period of the first secondary link resource, and determine the i-1th first reservation At least one second secondary link resource in the retention period and the second reservation period of each of the second secondary link resources, i ⁇ 2 and an integer;
  • the transceiver unit 12 is configured to send auxiliary link auxiliary information to the second electronic device on the first auxiliary link resource in the i-th first reserved period, where the auxiliary link auxiliary information is used to indicate the at least One second auxiliary link resource and a second reservation period of each of the second auxiliary link resources, and the i-th first reservation period is located within the resource perception window of the second electronic device.
  • the auxiliary link auxiliary information includes a first information field, a second information field, and third information Domain, wherein the first information domain is used to indicate the time domain position of the second secondary link resource, the second information domain is used to indicate the frequency domain position of the second secondary link resource, and the The third information field is used to indicate the second reservation period of the second secondary link resource.
  • the first information field carries indication information
  • the indication information is used to indicate a time slot offset
  • the time domain position is obtained by offsetting the first time slot by the time slot offset Yes
  • the first time slot is a time slot where the first secondary link resource in the i-1th first resource reservation period is located.
  • the second information field carries a resource identifier value RIV, and the RIV is used to indicate the starting subchannel of the second secondary link resource and the information contained in the second secondary link resource The number of subchannels; or, the second information field carries a bitmap, and the bitmap is used to indicate the range of subchannels included in the second secondary link resource.
  • the third information field carries indication information of a preset length, and different indication information is used to indicate different reservation periods.
  • the processing unit 11 is further configured to determine the number of reservations N of the first secondary link resource, where 2 ⁇ i ⁇ N, and N is an integer, after the reservation After the number of the first reservation period, the first secondary link resource and the first reservation period are re-determined, the reservation number N is configured by the network, and the N ⁇ 1 and is an integer.
  • the processing unit 11 determines the first secondary link resource and the first reservation period, it is used to determine the first secondary link resource and the first reservation through the new radio mode 2. Period; or, when the processing unit 11 determines the first secondary link resource and the first reserved period, it is used to determine the first secondary link resource according to the configuration information sent by the network device and received by the transceiver unit 12 And the first reservation period, the configuration information is used to indicate the first secondary link resource configured or pre-configured by the network device.
  • the processing unit 11 determines at least one second secondary link resource in the i-1th first reservation period and the second reservation period of each of the second secondary link resources Is used to determine at least one target time slot from the i-1th first reserved period, where the target time slot is used by both the second electronic device and the at least one third electronic device to send auxiliary link data The time slot in which the secondary link resource is located, the at least one second secondary link resource and each of the second The second reservation period of the secondary link resource.
  • the at least one second secondary link resource is within the i-1th first reserved period, except for the first secondary link resource and each of the target time slots One or more of other auxiliary link resources.
  • the at least one second secondary link resource is the secondary link resource on the first secondary link resource or each target time slot in the i-1th first reserved period. Link resources.
  • the communication device provided in the embodiment of the present application can perform the actions of the first electronic device in the foregoing embodiment, and its implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • the communication device 200 may be implemented in software and/or hardware. As shown in FIG. 10, the communication device 200 includes:
  • the transceiver unit 21 is configured to receive auxiliary link auxiliary information from the first electronic device on the first auxiliary link resource in the i-th first reserved period, where the auxiliary link auxiliary information is used to indicate the At least one second secondary link resource in the i-1 first reservation period and the second reservation period of each of the second secondary link resources, the i-th first reservation period is located in the In the resource perception window of the second electronic device, i ⁇ 2 and is an integer;
  • the processing unit 22 is configured to select a resource for auxiliary link communication from the resource selection window according to the at least one second auxiliary link resource and each of the second reservation periods at the resource selection moment, the resource The selection time is located after the resource awareness window and before the resource selection window.
  • the auxiliary link auxiliary information includes a first information field, a second information field, and third information Domain, where the first information field is used to indicate the time domain position of the second secondary link resource, the second information field is used to indicate the frequency domain position of the second secondary link resource, and The third information field is used to indicate the second reservation period of the second secondary link resource.
  • the first information field carries indication information
  • the indication information is used to indicate a time slot offset
  • the time domain position is obtained by offsetting the first time slot by the time slot offset Yes
  • the first time slot is a time slot where the first secondary link resource in the i-1th first resource reservation period is located.
  • the second information field carries a resource identifier value RIV, and the RIV is used to indicate the starting subchannel of the second secondary link resource and the information contained in the second secondary link resource The number of subchannels; or, the second information field carries a bitmap, and the bitmap is used to indicate the range of subchannels included in the second secondary link resource.
  • the third information field carries indication information of a preset length, and different indication information is used to indicate different reservation periods.
  • the processing unit 22 when the at least one second secondary link resource is within the i-1th first reserved period, except for the first secondary link resource and the target When one or more of the auxiliary link resources other than the auxiliary link resources on the time slot are selected, it is specifically used to, at the time of resource selection, according to at least one second in the i-1th first reserved period Secondary link resources and the second reservation period of each of the second secondary link resources, the reserved second secondary link resource is determined from the resource selection window, and the target time slot is the second
  • the electronic device and the at least one third electronic device both transmit auxiliary link data in the time slot of the auxiliary link resource, and the target time slot is at least one; the second auxiliary link resource reserved from the resource selection window Select the resource used for auxiliary link communication.
  • the processing unit 22 when the at least one second secondary link resource is the first secondary link resource or target in the i-1th first reserved period When the secondary link resource on the slot is selected, it is specifically used to select at least one second secondary link resource and each of the second secondary link resources in the i-1th first reservation period at the time of resource selection In the second reservation period of the second reservation period, the reserved second auxiliary link resource is determined from the resource selection window, and the target time slot is that the second electronic device and at least one third electronic device both send the auxiliary link The time slot where the secondary link resource of the data is located, the target time slot is at least one, and the secondary link resources other than the reserved second secondary link resource in the resource selection window are selected for use in the secondary link Communication resources.
  • the communication device provided in the embodiment of the present application can perform the actions of the second electronic device in the above-mentioned embodiment, and its implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 11 is a schematic structural diagram of an electronic device provided by an embodiment of the application. As shown in FIG. 11, the electronic device 300 includes:
  • the memory 32 stores computer execution instructions
  • the processor 31 executes the computer-executable instructions stored in the memory 32, so that the processor 31 executes the auxiliary link communication resource selection method executed by the first electronic device; or, causes the processor 31 to execute the above 2.
  • the resource selection method of the auxiliary link communication executed by the electronic device.
  • the electronic device 300 further includes a communication component 33.
  • the processor 31, the memory 32, and the communication component 33 may be connected by a bus 34.
  • the embodiment of the present application also provides a readable storage medium, the readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to realize the auxiliary link communication performed by the first electronic device as above. Or, when the computer-executed instruction is executed by the processor, it is used to implement the resource selection method for auxiliary link communication performed by the second electronic device.
  • the embodiment of the present application also provides a computer program product, when the computer program product runs on the first terminal device, it is used to implement the resource selection method of the auxiliary link communication executed by the first electronic device; or, when the computer program product is running on the first terminal device; When the computer program product runs on the second electronic device, it is used to implement the resource selection method of the auxiliary link communication executed by the first electronic device.
  • a person of ordinary skill in the art can understand that all or part of the steps in the foregoing method embodiments can be implemented by a program instructing relevant hardware.
  • the aforementioned program can be stored in a computer readable storage medium. When the program is executed, it executes the steps including the foregoing method embodiments; and the foregoing storage medium includes: ROM, RAM, magnetic disk, or optical disk and other media that can store program codes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本申请实施例提供一种辅链路通信的资源选择方法及通信装置，第一电子设备确定出第一辅链路资源和第一预留周期，以及每个第一预留周期内的至少一个第二辅链路资源和各第二辅链路资源的第二预留周期。之后，第一电子设备在当前的第一预留周期内的第一辅链路资源上发送辅链路资源辅助信息，该辅链路辅助信息用来指示哪些辅链路资源已被预留或哪些辅链路资源未被预留。第二电子设备接收到各辅链路辅助信息后，从资源选择窗内排除掉被其他设备周期性预留的辅链路资源，并从剩余的辅链路资源中选择用于辅链路通信资源。由于至少一个第二辅链路资源是根据半双工通信确定出的辅链路资源，通过发送辅链路辅助信息可以实现降低半双工影响的目的。

Description

辅链路通信的资源选择方法及通信装置
本申请要求于2020年04月10日提交中国专利局、申请号为202010280817.4、申请名称为“辅链路通信的资源选择方法及通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信技术领域，尤其涉及一种辅链路通信的资源选择方法及通信装置。
背景技术
车与万物(vehicle to X，V2X)通信是协议第16(Release 16，R16)版本的一个关键技术方向，NR V2X作为长期演进(Long Term Evolution，LTE)V2X的增强，是使能车联网的关键技术手段。
V2X通信中，V2X设备之间通过辅链路(sidelink)进行辅链路通信。针对V2X通信，有两种资源分配方式，第一种方式是调度资源分配(scheduled resource allocation)方式，该种方式中，由基站为V2X设备配置用于辅链路通信的资源，该方式主要应用于LTE V2X通信中的模式(mode3)和NR V2X通信中的mode 1；第二种方式是基于感知的资源选择方式，该方式不需要基站对资源进行调度，该方式主要应用于LTE V2X通信中的mode4和NR V2X通信中的mode2。基于感知的资源选择方式中，V2X设备在资源感知窗内接收其他V2X设备发送的辅链路控制信道(physical sidelink control channel，PSCCH)，根据PSCCH确定出其他V2X设备的预留资源，然后从资源选择窗中排除预留资源，从剩余可用的资源中选择出用于辅链路通信的资源的过程。
LTE V2X通信和NR V2X通信中，由于半双工原因导致V2X设备在发送辅链路数据的同时无法接收其他V2X设备发送的PSCCH，进而导致V2X设备无法排除资源选择窗口内其他V2X设备的预留资源。此时，LTE V2X通信中引入了排除所有可能预留资源的方案，即当V2X设备在资源感知窗内的某个时隙发送辅链路数据时，根据该时隙和预留资源的所有可能预留 周期得到一组时隙，对于该组时隙内落入资源选择窗口的时隙，将排除该些时隙上的所有频域资源。然而，NR V2X通信支持更灵活的预留周期，若继续沿用上述LTE V2X通信中排除预留资源的方法，则将导致资源选择窗口内的资源过少或无资源可选，进而导致NR V2X通信失败。
发明内容
本申请实施例提供一种辅链路通信的资源选择方法及通信装置，第一电子设备向第二电子设备发送辅链路辅助信息，以告知第二电子设备可用或不可用的辅链路资源，使得第二电子设备根据辅链路辅助信息选择用于辅链路通信的资源，提高通信成功率。
第一方面，本申请实施例提供一种辅链路通信的资源选择方法，包括：
第一电子设备确定第一辅链路资源和第一预留周期，所述第一预留周期用于指示所述第一辅链路资源被周期性预留的周期；
所述第一电子设备确定第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，i≥2且为整数；
所述第一电子设备在第i个第一预留周期内的第一辅链路资源上，向第二电子设备发送辅链路辅助信息，所述辅链路辅助信息用于指示所述至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，所述第i个第一预留周期位于所述第二电子设备的资源感知窗内。
一种可行的设计中，对于所述至少一个第二辅链路资源中的每个第二辅链路资源，所述辅链路辅助信息包含第一信息域、第二信息域和第三信息域，其中，所述第一信息域用于指示所述第二辅链路资源的时域位置，所述第二信息域用于指示所述第二辅链路资源的频域位置，所述第三信息域用于指示所述第二辅链路资源的第二预留周期。
一种可行的设计中，所述第一信息域携带指示信息，所述指示信息用于指示时隙偏移，所述时域位置是将第一时隙偏移所述时隙偏移后得到的，所述第一时隙是所述第i-1个第一资源预留周期内的第一辅链路资源所在的时隙。
一种可行的设计中，所述第二信息域携带资源标识符值RIV，所述RIV用于指示所述第二辅链路资源的起始子信道和所述第二辅链路资源包含的子信道个数；或者，所述第二信息域携带位图，所述位图用于指示所述第 二辅链路资源包含的子信道的范围。
一种可行的设计中，所述第三信息域携带预设长度的指示信息，不同的指示信息用于指示不同的预留周期。
一种可行的设计中，上述的方法还包括：所述第一电子设备确定所述第一辅链路资源的预留次数N，所述2≤i≤N，所述N为整数；经过所述预留次数个第一预留周期后，所述第一电子设备重新确定所述第一辅链路资源和所述第一预留周期，所述预留次数N是网络配置的，所述N≥1且为整数。
一种可行的设计中，所述第一电子设备确定第一辅链路资源和第一预留周期，包括：所述第一电子设备通过新无线模式2确定所述第一辅链路资源和所述第一预留周期；或者，所述第一电子设备接收网络设备发送的配置信息，所述配置信息用于指示所述网络设备配置或预配置的所述第一辅链路资源。
一种可行的设计中，所述第一电子设备确定第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，包括：所述第一电子设备从第i-1个第一预留周期内，确定至少一个目标时隙，所述目标时隙是所述第二电子设备和至少一个第三电子设备均发送辅链路数据的辅链路资源所在的时隙；所述第一电子设备根据所述至少一个目标时隙，从所述第i-1个第一预留周期内确定出所述至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期。
一种可行的设计中，所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，除所述第一辅链路资源和各所述目标时隙外的其他辅链路资源中的一个或多个。
一种可行的设计中，所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，所述第一辅链路资源或各所述目标时隙上的辅链路资源。
第二方面，本申请实施例提供一种辅链路通信的资源选择方法，包括：
第二电子设备在第i个第一预留周期内的第一辅链路资源上，接收来自第一电子设备的辅链路辅助信息，所述辅链路辅助信息用于指示所述第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，所述第i个第一预留周期位于所述第二电子设备的资源感知窗内，i≥2且为整数；
所述第二电子设备在资源选择时刻，根据所述至少一个第二辅链路资源和各所述第二预留周期，从资源选择窗内选择用于辅链路通信的资源，所述资源选择时刻位于所述资源感知窗之后且位于所述资源选择窗之前。
一种可行的设计中，对于所述至少一个第二辅链路资源中的每个第二辅链路资源，所述辅链路辅助信息包含第一信息域、第二信息域和第三信息域中，其中，所述第一信息域用于指示所述第二辅链路资源的时域位置，所述第二信息域用于指示所述第二辅链路资源的频域位置，所述第三信息域用于指示所述第二辅链路资源的第二预留周期。
一种可行的设计中，所述第一信息域携带指示信息，所述指示信息用于指示时隙偏移，所述时域位置是将第一时隙偏移所述时隙偏移后得到的，所述第一时隙是所述第i-1个第一资源预留周期内的第一辅链路资源所在的时隙。
一种可行的设计中，所述第二信息域携带资源标识符值RIV，所述RIV用于指示所述第二辅链路资源的起始子信道和所述第二辅链路资源包含的子信道个数；或者，所述第二信息域携带位图，所述位图用于指示所述第二辅链路资源包含的子信道的范围。
一种可行的设计中，所述第三信息域携带预设长度的指示信息，不同的指示信息用于指示不同的预留周期。
一种可行的设计中，所述第二电子设备在资源选择时刻，根据所述至少一个第二辅链路资源和各所述第二预留周期，从资源选择窗内选择用于辅链路通信的资源，包括：当所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，除所述第一辅链路资源和目标时隙上的辅链路资源外的其他辅链路资源中的一个或多个时，所述第二电子设备在资源选择时刻，根据所述第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，从所述资源选择窗内确定出预留的第二辅链路资源，所述目标时隙是所述第二电子设备和至少一个第三电子设备均发送辅链路数据的辅链路资源所在的时隙，所述目标时隙至少为一个；从所述资源选择窗内预留的第二辅链路资源中选择用于辅链路通信的资源。
一种可行的设计中，所述第二电子设备在资源选择时刻，根据所述至少一个第二辅链路资源和各所述第二预留周期，从资源选择窗内选择用于辅链路通信的资源，包括：
当所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，所述第一辅链路资源或目标时隙上的辅链路资源时，所述第二电子设备在资源选择时刻，根据所述第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，从所述资源选择窗内确定出预留的第二辅链路资源，所述目标时隙是所述第二电子设备和至少一个第三电子设备均发送辅链路数据的辅链路资源所在的时隙，所述目标时隙至少为一个；从所述资源选择窗内的预留的第二辅链路资源外的其他辅链路资源中选择用于辅链路通信的资源。
第三方面，本申请实施例提供一种通信装置，包括：
处理单元，用于确定第一辅链路资源和第一预留周期，所述第一预留周期用于指示所述第一辅链路资源的周期，确定第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，i≥2且为整数；
收发单元，用于在第i个第一预留周期内的第一辅链路资源上，向第二电子设备发送辅链路辅助信息，所述辅链路辅助信息用于指示所述至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，所述第i个第一预留周期位于所述第二电子设备的资源感知窗内。
一种可行的设计中，对于所述至少一个第二辅链路资源中的每个第二辅链路资源，所述辅链路辅助信息包含第一信息域、第二信息域和第三信息域，其中，所述第一信息域用于指示所述第二辅链路资源的时域位置，所述第二信息域用于指示所述第二辅链路资源的频域位置，所述第三信息域用于指示所述第二辅链路资源的第二预留周期。
一种可行的设计中，所述第一信息域携带指示信息，所述指示信息用于指示时隙偏移，所述时域位置是将第一时隙偏移所述时隙偏移后得到的，所述第一时隙是所述第i-1个第一资源预留周期内的第一辅链路资源所在的时隙。
一种可行的设计中，所述第二信息域携带资源标识符值RIV，所述RIV用于指示所述第二辅链路资源的起始子信道和所述第二辅链路资源包含的子信道个数；或者，所述第二信息域携带位图，所述位图用于指示所述第二辅链路资源包含的子信道的范围。
一种可行的设计中，所述第三信息域携带预设长度的指示信息，不同 的指示信息用于指示不同的预留周期。
一种可行的设计中，所述处理单元，还用于确定所述第一辅链路资源的预留次数N，所述2≤i≤N，所述N为整数，经过所述预留次数个第一预留周期后，重新确定所述第一辅链路资源和所述第一预留周期，所述预留次数N是网络配置的，所述N≥1且为整数。
一种可行的设计中，所述处理单元确定第一辅链路资源和第一预留周期时，用于通过新无线模式2确定所述第一辅链路资源和所述第一预留周期；或者，所述处理单元确定第一辅链路资源和第一预留周期时，用于根据所述收发单元接收到的网络设备发送的配置信息确定所述第一辅链路资源和所述第一预留周期，所述配置信息用于指示所述网络设备配置或预配置的所述第一辅链路资源。
一种可行的设计中，所述处理单元在确定第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期时，用于从第i-1个第一预留周期内，确定至少一个目标时隙，所述目标时隙是所述第二电子设备和至少一个第三电子设备均发送辅链路数据的辅链路资源所在的时隙，根据所述至少一个目标时隙，从所述第i-1个第一预留周期内确定出所述至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期。
一种可行的设计中，所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，除所述第一辅链路资源和各所述目标时隙外的其他辅链路资源中的一个或多个。
一种可行的设计中，所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，所述第一辅链路资源或各所述目标时隙上的辅链路资源。
第四方面，本申请实施例提供一种通信装置，包括：
收发单元，用于在第i个第一预留周期内的第一辅链路资源上，接收来自第一电子设备的辅链路辅助信息，所述辅链路辅助信息用于指示所述第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，所述第i个第一预留周期位于所述第二电子设备的资源感知窗内，i≥2且为整数；
处理单元，用于在资源选择时刻，根据所述至少一个第二辅链路资源和各所述第二预留周期，从资源选择窗内选择用于辅链路通信的资源，所 述资源选择时刻位于所述资源感知窗之后且位于所述资源选择窗之前。
一种可行的设计中，对于所述至少一个第二辅链路资源中的每个第二辅链路资源，所述辅链路辅助信息包含第一信息域、第二信息域和第三信息域中，其中，所述第一信息域用于指示所述第二辅链路资源的时域位置，所述第二信息域用于指示所述第二辅链路资源的频域位置，所述第三信息域用于指示所述第二辅链路资源的第二预留周期。
一种可行的设计中，所述第一信息域携带指示信息，所述指示信息用于指示时隙偏移，所述时域位置是将第一时隙偏移所述时隙偏移后得到的，所述第一时隙是所述第i-1个第一资源预留周期内的第一辅链路资源所在的时隙。
一种可行的设计中，所述第二信息域携带资源标识符值RIV，所述RIV用于指示所述第二辅链路资源的起始子信道和所述第二辅链路资源包含的子信道个数；或者，所述第二信息域携带位图，所述位图用于指示所述第二辅链路资源包含的子信道的范围。
一种可行的设计中，所述第三信息域携带预设长度的指示信息，不同的指示信息用于指示不同的预留周期。
一种可行的设计中，所述处理单元，当所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，除所述第一辅链路资源和目标时隙上的辅链路资源外的其他辅链路资源中的一个或多个时，具体用于在资源选择时刻，根据所述第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，从所述资源选择窗内确定出预留的第二辅链路资源，所述目标时隙是所述第二电子设备和至少一个第三电子设备均发送辅链路数据的辅链路资源所在的时隙，所述目标时隙至少为一个；从所述资源选择窗内预留的第二辅链路资源中选择用于辅链路通信的资源。
一种可行的设计中，所述处理单元，当所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，所述第一辅链路资源或目标时隙上的辅链路资源时，具体用于在资源选择时刻，根据所述第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，从所述资源选择窗内确定出预留的第二辅链路资源，所述目标时隙是所述第二电子设备和至少一个第三电子设备均发送辅链路数据的辅链路资源所 在的时隙，所述目标时隙至少为一个，从所述资源选择窗内的预留的第二辅链路资源外的其他辅链路资源中选择用于辅链路通信的资源。
第五方面，本申请实施例提供一种电子设备，包括处理器、存储器及存储在所述存储器上并可在处理器上运行的计算机程序，所述处理器执行所述程序时使得所述电子设备实现如上第一方面或第一个方面的各种可能的实现方式中的方法。
第六方面，本申请实施例提供一种电子设备，包括处理器、存储器及存储在所述存储器上并可在处理器上运行的计算机程序，所述处理器执行所述程序时使得所述电子设备实现如上第二方面或第二个方面的各种可能的实现方式中的方法。
第七方面，本申请实施例提供一种包含指令的计算机程序产品，当其在电子设备上运行时，使得电子设备计算机执行上述第一方面或第一方面的各种可能的实现方式中的方法。
第八方面，本申请实施例提供一种包含指令的计算机程序产品，当其在电子设备上运行时，使得电子设备计算机执行上述第二方面或第二方面的各种可能的实现方式中的方法。
第九方面，本申请实施例提供一种可读存储介质，所述可读存储介质中存储有指令，当其在电子设备上运行时，使得电子设备执行如上述第一方面或第一方面的各种可能的实现方式中的方法。
第十方面，本申请实施例提供一种可读存储介质，所述可读存储介质中存储有指令，当其在电子设备上运行时，使得电子设备执行如上述第二方面或第二方面的各种可能的实现方式中的方法。
本申请实施例提供的辅链路通信的资源选择方法及通信装置，第一电子设备确定出第一辅链路资源和第一预留周期，以及每个第一预留周期内的至少一个第二辅链路资源和各第二辅链路资源的第二预留周期。之后，第一电子设备在当前的第一预留周期内的第一辅链路资源上发送辅链路资源辅助信息，该辅链路辅助信息用来指示哪些辅链路资源已被预留或哪些辅链路资源未被预留。第二电子设备接收到各辅链路辅助信息后，根据资源感知窗内的各辅链路辅助信息指示的第二辅链路资源和各第二辅链路资源的第二预留周期，从资源选择窗内排除掉被其他设备周期性预留的辅链路资源，并从剩余的辅链路资源中选择用于辅链路通信资源。该过程中， 由于至少一个第二辅链路资源是根据半双工通信确定出的辅链路资源，第二电子设备可以根据至少一个第二辅链路资源和各第二辅链路资源的第二预留周期从辅链路资源池中排除掉用于半双工通信的资源，因此，本申请实施例通过周期性的发送辅链路辅助信息可以实现降低半双工影响的目的。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1A是LTE V2X通信中的一种基于感知的资源选择方式的示意图；
图1B是LTE V2X通信中的另一种基于感知的资源选择方式的示意图；
图2A是本申请实施例提供的辅链路通信资源的选择方法所适用的网络架构示意图；
图2B是本申请实施例提供的辅链路通信资源的选择方法所适用的网络架构示意图；
图3是本申请实施例提供的一种辅链路通信的资源选择方法的流程图；
图4是本申请实施例提供的辅链路通信的资源选择方法中资源池的示意图；
图5是利用本申请实施例提供的辅链路通信的资源选择方法选择辅链路资源的示意图；
图6是本申请实施例提供的辅链路通信的资源选择方法中频域表示示意图；
图7是本申请实施例提供的辅链路通信的资源选择方法中第一预留周期的变化示意图；
图8是本申请实施例提供的辅链路通信的资源选择方法的示意图；
图9为本申请实施例提供的一种通信装置的结构示意图；
图10为本申请实施例提供的一种通信装置的结构示意图；
图11为本申请实施例提供的一种电子设备的结构示意图。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
V2X通信中，从是否需要网络设备进行资源调度的角度，将资源分配方式划分为调度资源分配方式和基于感知的资源选择方式。其中，调度资源分配方式包括LTE V2X通信中的mode3和NR V2X通信中的mode 1，基于感知的资源选择方式包括LTE V2X通信中的mode4和NR V2X通信中的mode2。
图1A是LTE V2X通信中的一种基于感知的资源选择方式的示意图。请参照图1A，V2X设备1在时隙n-k1上发送辅链路数据的同时发送PSCCH，该PSCCH指示预留周期为P1；同理，V2X设备2在时隙n-k1上发送辅链路数据的同时发送PSCCH，该PSCCH指示预留周期为P2。V2X设备3在时隙n-k1上接收V2X设备1的PSCCH，根据该PSCCH确定出V2X设备1周期性预留的资源，如图中方格填充部分所示；同理，V2X设备3在时隙n-k1上接收V2X设备2的PSCCH，根据该PSCCH确定出V2X设备2周期性预留的资源，如图中竖线填充部分所示。
之后，当V2X设备3在时隙n选择辅链路资源时，根据资源感知窗内的感知结果，从资源选择窗内排除掉V2X设备1和V2X设备2的预留资源，从剩余资源中选择用于辅链路通信的资源。
但是，V2X设备采用半双工的通信方式，即V2X设备在发送辅链路数据的同时无法接收其他V2X设备发送的PSCCH等。上述图1A中，倘若V2X设备3也在时隙n-K1上发送辅链路数据(如图1B中点填充部分所示)，则会导致V2X设备3无法接收V2X设备1和V2X设备2的PSCCH，导致V2X设备3无法从资源选择窗内排除掉V2X设备1和V2X设备2的预留资源，进而导致资源碰撞。为此，LTE V2X通信提出了排除所有预留周期对应的预留资源的方案。示例性的，可参见图1B。
图1B是LTE V2X通信中的另一种基于感知的资源选择方式的示意图。V2X设备1、V2X设备2和V2X设备3均在时隙n-k1上发送辅链路数据，即该3个V2X设备的时域资源相同但频域资源不同。V2X设备3在时隙n 重选辅链路资源。LTE V2X通信的预留周期共有12个：20ms、50ms、100-100ms。为排除掉被V2X设备1、V2X设备2周期性预留的资源，V2X设备3根据时隙n-k1和17个预留周期，计算出17个周期性预留资源可能占用的时隙，即时隙n-k1+(L1-1)*20、时隙n-k1+(L2-1)*50、时隙n-k1+100、时隙n-k1+200、……、时隙n-k1+1000,其中L1＝1～5，L2＝1～2。然后，从该17个时隙中确定出落入资源选择窗内的时隙，如图1B中的时隙n-k1+50、时隙n-k1+100、时隙n-k1+200。之后，V2X设备3将该3个时隙上所有的资源排除掉，从资源选择窗内剩余的资源中选择用于辅链路通信的资源。
NR V2X通信同样存在半双工问题。但是，NR V2X通信支持更灵活的预留周期，如0、[1:99]、100ms、200ms、300ms、400ms、500ms、600ms、700ms、800ms、900ms、1000ms。若采用图1B中排除所有可能预留周期的方法，则将导致资源选择窗内的资源过少或无资源可选。尤其是预留周期为[1:99]时，资源选择窗内的所有资源可能都被排除掉。显然，上述图1B所示方法不适用于NR V2X通信。
有鉴于此，本申请实施例提供一种辅链路通信的资源选择方法及通信装置，第一电子设备通过辅链路辅助信息向第二电子设备告知哪些辅链路资源已被预留或哪些辅链路资源未被预留，以辅助第二电子设备在资源选择是降低半双工的影响。
首先，对本申请实施例所涉及的名词进行解释。
第一电子设备，通过向第二电子设备发送辅链路辅助信息，以告知第二电子设备资源池中的哪些辅链路资源已被预留或哪些辅链路资源未被预留，从而帮助第二电子设备进行辅链路资源选择。例如，将多个共享资源池的NR V2X设备中的某一个NR V2X设备作为第一电子设备，其余的NR V2X设备作为第二电子设备。
发送辅链路辅助信息的设备，
第二电子设备，需要选择用于辅链路资源进行辅链路通信的设备。选择辅链路资源时，利用基于感知的资源选择方式并结合接收到的辅链路辅助信息进行辅链路资源选择。
图2A是本申请实施例提供的辅链路通信资源的选择方法所适用的网络架构示意图。请参照图2A，该网络架构包括一个第一电子设备和至少一个第二电子设备。其中，第一电子设备和第二电子设备均能利用辅链路 (sidelink)通信，辅链路也可以称之为直接链路、单边链路等，辅链路通信也可以称之为直接通信等。例如，第一电子设备可以与任意一个第二电子设备进行辅链路通信；再如，各个第二电子设备之间可以通过辅链路通信。该第一电子设备和第二电子设备均可以适用辅链路资源池中的资源。其中，辅链路资源池中的资源是网络配置或预配置的。
图2B是本申请实施例提供的辅链路通信资源的选择方法所适用的网络架构示意图。请参照图2B，NR V2X通信包括车辆与车辆(vehicle to vehicle，V2V)之间的通信、车辆与路边基础设施(vehicle to infrastructure，V2I)之间的通信、车辆与行人(vehicle to pedestrian，V2P)之间的通信、车辆与网络(vehicle to network，V2N)之间的通信等，上述车辆与万物通信统称为V2X(X代表任何事物)通信。第一电子设备例如为车辆、行人的电子设备、路边单元(Road Side Unit，RSU)等中的任意一个，第二电子设备为车辆、行人的电子设备、路边单元(Road Side Unit，RSU)等中的任意一个。
下面，基于上述的名词解释以及图2A和图2B所示网络架构，对本申请实施例所述的辅链路通信的资源选择方法进行详细说明。示例性的，可参见图3。图3是本申请实施例提供的一种辅链路通信的资源选择方法的流程图，本实施例包括：
101、第一电子设备确定第一辅链路资源和第一预留周期。
其中，所述第一预留周期用于指示相邻两个第一辅链路资源之间的时隙个数。
本申请实施例中，第一辅链路资源是第一电子设备用于发送辅链路辅助信息的辅链路资源，第一预留周期是第一电子设备预留的第一辅链路资源的预留周期。示例性的，可参见图4，图4是本申请实施例提供的辅链路通信的资源选择方法中资源池的示意图。
请参照图4，资源池的一个最小资源单元(如图4中黑色填充所示)称之为一个子信道(subchannel)，一个子信道在时域上占一个时隙(slot)，在频域上占M个(resource block，RB)，M≥1且为整数，由网络配置或预配置。第一辅链路资源包含至少一个子信道。
下面，对第一电子设备如何确定出第一辅链路资源和第一预留周期进行详细说明。示例性的，可参见图5，图5是利用本申请实施例提供的辅 链路通信的资源选择方法选择辅链路资源的示意图。
请参照图5，斜线填充部分表示第一辅链路资源，第一预留周期T为4个时隙，表示时域上每两个第一辅链路资源之间间隔4个时隙，也就是说，每4个时隙中的一个时隙上存在第一辅链路资源。
一种实现方式中，第一电子设备可利用基于感知的资源选择方式从资源池中确定出第一辅链路资源。
示例性的，初始时，第一电子设备利用NR V2X的mode2，从资源池内确定出第一链路资源和第一预留周期。之后，根据初始的第一辅链路资源和第一预留周期，得到一组第一辅链路资源。例如，第一辅链路资源的时域位置为时隙n-k-4a(图中未示意图出时隙n-k-4a)、频域位置为第c-d子信道、第一预留周期为x个时隙，其中，a≥1且为整数，0＜c≤d，且c和d为整数，x≥1。当x＝4，即第一预留周期为4个时隙时，第一辅链路资源如图中斜线填充部分所示。
另一种可行的实现方式中，第一电子设备接收网络设备发送的配置信息，所述配置信息用于指示所述网络设备配置或预配置的所述第一辅链路资源。
示例性的，网络设备可以是5G中的gNB、LTE中的eNB等，本申请实施例并不限制。配置信息指示第一辅链路资源的时域位置、频域位置和第一预留周期。例如，时域位置为时隙n-k-4a(图中未示意图出时隙n-k-4a)、频域位置为第c-d子信道、第一预留周期为x个时隙，其中，a≥1且为整数，0＜c≤d，且c和d为整数，x≥1。当x＝4，即第一预留周期为4个时隙时，第一辅链路资源如图中斜线填充部分所示。
请参照图2A，第一电子设备通过广播方式发送辅链路辅助信息时，或者，第一电子设备通过组播方式向一个组播组内的多个第二电子设备发送辅链路辅助信息时，每个第一周期内的第一辅链路资源仅有一个。此时，每个第一预留周期内，第一电子设备在第一辅链路资源上广播或组播辅链路辅助信息。
再请参照图2A，第一电子设备通过单播方式发送辅链路辅助信息时，此时，第一电子设备需要针对每个第二电子设备确定第一辅链路资源，不同第二电子设备的第一辅链路资源不同。
102、第一电子设备确定第i-1个第一预留周期内的至少一个第二辅链 路资源和各所述第二辅链路资源的第二预留周期，i≥2且为整数。
示例性的，至少一个第二辅链路资源的数量由网络配置或预配置，或通过动态信令的方式指示等。该至少一个第二辅链路资源所在的时隙可以与第二电子设备在第i-1个第一预留周期内发送辅链路数据的辅链路资源所在的时隙相同。由于第二电子设备在第二辅链路资源所在时隙上发送了辅链路数据，使得第二电子设备在该时隙上无法接收其他设备发送的辅链路数据，如PSCCH，此时，至少一个第二辅链路资源相当于不可用资源。因此，第一电子设备将该至少一个第二辅链路资源的相关信息通过辅链路辅助信息发送给第二电子设备，可以使得第二电子设备从资源选择窗中排除掉该些第二辅链路资源的预留资源。
或者，至少一个第二辅链路资源所在的时隙与第二电子设备在第i-1个第一预留周期内发送辅链路数据的辅链路资源所在的时隙不同，由于第二电子设备并没有在第二辅链路资源上所在的时隙发送辅链路数据，因此，第二电子设备在第二辅链路资源上可以接收其他设备发送的辅链路数据，如PSCCH。此时，至少一个第二辅链路资源相当于可用资源。第一电子设备将该至少一个第二辅链路资源的相关信息通过辅链路辅助信息发送给第二电子设备，可以使得第二电子设备从该些第二辅链路资源中选择出用于辅链路通信的资源。
103、所述第一电子设备在第i个第一预留周期内的第一辅链路资源上，向第二电子设备发送辅链路辅助信息，所述辅链路辅助信息用于指示所述至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，所述第i个第一预留周期位于所述第二电子设备的资源感知窗内。
示例性的，辅链路辅助信息可承载在辅链路控制信道或辅链路数据信道上。
请参照图5，步骤102和步骤103中，对于任意相邻的两个第一预留周期，以下称之为第i-1个第一预留周期和第i个第一预留周期，第一电子设备确定第i-1个第一预留周期内的至少一个第二辅链路资源和各第二辅链路资源的第二预留周期。如此一来，可以确定出每个第一预留周期内的至少一个第二辅链路资源和各第二辅链路资源的第二预留周期。
对于每一个第i-1个第一预留周期内的至少一个第二辅链路资源和各第二辅链路资源的第二预留周期，第一电子设备在第i个第一预留周期中 的第一辅链路资源上发送辅链路辅助信息。例如，图5中，第i-1个第一预留周期为时隙n-k-4至时隙n-k、第i个第一预留周期内的第一辅链路资源位于时隙n-k时，第一电子设备确定时隙n-k-4至时隙n-k中的至少一个第二辅链路资源和各第二辅链路资源的第二预留周期，并在时隙n-k上的第一辅链路资源上发送辅链路辅助信息，该辅链路辅助信息用于指示时隙n-k-4至时隙n-k中的至少一个第二辅链路资源和各第二辅链路资源的第二预留周期。
104、所述第二电子设备在资源选择时刻，根据所述至少一个第二辅链路资源和各所述第二预留周期，从资源选择窗内选择用于辅链路通信的资源，所述资源选择时刻位于所述资源感知窗之后且位于所述资源选择窗之前。
请继续参照图5，第二电子设备在时隙n初始或重新选择辅链路资源时，根据资源感知窗内的感知结果，从资源选择窗内选择用于辅链路通信的资源。其中，感知结果来自两个方面：第一方面，第二电子设备基于感知的方式，从资源选择窗内排除被其他电子设备周期性预留的资源；第二方面，第二电子设备根据在资源感知窗内接收到的辅链路辅助信息，从资源选择窗内排除双工通信的资源。例如图5中，第一电子设备在每个第一预留周期内的第一辅链路资源上均发送了辅链路辅助信息，该些第一辅链路资源中的6个第一辅链路资源位于第二资源感知窗内，如图中标注1-6的6个第一辅链路资源。因此，第二电子设备根据在该6个第一辅链路资源中的每个第一辅链路资源上接收辅链路辅助信息，共接收到6个辅链路辅助信息。然后，第二电子设备根据辅链路辅助信息指示的第二辅链路资源和各第二辅链路资源的第二预留周期，从资源选择窗内确定出预留的第二辅链路资源，进而根据该些预留的第二辅链路资源排除第二电子设备因发生双工通信而无法确定的资源。
需要说明的是，虽然上述是以6个辅链路辅助信息为例对本申请实施例进行说明，然而，本申请实施例并不以此为限制，其他可行的实现方式中，也可以是更多或更少的辅链路辅助信息，具体可以根据第二电子设备的资源感知窗的长度、第一辅链路资源的第一预留周期的长度等决定。
本申请实施例提供的辅链路通信的资源选择方法，第一电子设备确定出第一辅链路资源和第一预留周期，以及每个第一预留周期内的至少一个 第二辅链路资源和各第二辅链路资源的第二预留周期。之后，第一电子设备在当前的第一预留周期内的第一辅链路资源上发送辅链路资源辅助信息，该辅链路辅助信息用来指示哪些辅链路资源已被预留或哪些辅链路资源未被预留。第二电子设备接收到各辅链路辅助信息后，根据资源感知窗内的各辅链路辅助信息指示的第二辅链路资源和各第二辅链路资源的第二预留周期，从资源选择窗内排除掉被其他设备周期性预留的辅链路资源，并从剩余的辅链路资源中选择用于辅链路通信资源。该过程中，由于至少一个第二辅链路资源是根据半双工通信确定出的辅链路资源，第二电子设备可以根据至少一个第二辅链路资源和各第二辅链路资源的第二预留周期从辅链路资源池中排除掉用于半双工通信的资源，因此，本申请实施例通过周期性的发送辅链路辅助信息可以实现降低半双工影响的目的。
下面，对上述实施例中的辅链路辅助信息进行详细说明。
一种可行的设计中，对于所述至少一个第二辅链路资源中的每个第二辅链路资源，所述辅链路辅助信息包含第一信息域、第二信息域和第三信息域，其中，所述第一信息域用于指示所述第二辅链路资源的时域位置，所述第二信息域用于指示所述第二辅链路资源的频域位置，所述第三信息域用于指示所述第二辅链路资源的第二预留周期。
示例性的，再请参照图5，一个第一预留周期为4个时隙，第一辅链路资源位于该4个时隙中的第一个时隙上，第二辅链路资源可能位于其余的3个时隙中的任意一个或多个时隙上；不同的第二辅链路资源的频域位置、第二预留周期也可能不同。因此，对于每一个第二辅链路资源，需要指示该第二辅链路资源的时域位置、频域位置和第二预留周期。
首先，时域位置。
本申请实施例中，辅链路辅助信息的第一信息域携带指示信息，所述指示信息用于指示时隙偏移，所述时域位置是将第一时隙偏移所述时隙偏移后得到的，所述第一时隙是所述第i-1个第一资源预留周期内的第一辅链路资源所在的时隙。
示例性的，再请参照图5，以第i个第一预留周期为例，该第i个第一预留周期包括时隙n-k-4、时隙n-k-3、时隙n-k-2、时隙n-k-1。其中，第一辅链路资源位于时隙n-k-4上，时隙n-k-3、时隙n-k-2、时隙n-k-1分别是将时隙n-k-4向右偏移1个、2个和3个得到的。因此，可以通过时隙偏 移指示第二辅链路资源的时域位置。例如，时隙偏移为2个时隙，则说明第二辅链路资源位于时隙n-k-2。其中，指示信息可通过比特位图或其他方式指示时隙偏移。
采用比特位图指示时隙偏移时，令比特位图的长度为T，该长度T与第一预留周期的长度相同。将一个第一预留周期内的第一辅链路资源所在的时隙标记为时隙t，当比特位图中由高到低的第n个比特位取1时，则表示第二辅链路资源所在的时隙位置为t+n-1。例如，图5中，第i个第一预留周期包括时隙n-k-4、时隙n-k-3、时隙n-k-2、时隙n-k-1，比特位图的长度为4位，假设1000、0100、0010、0001分别表示时隙n-k-4、时隙n-k-3、时隙n-k-2、时隙n-k-1。则当比特位图为0100，即比特位图中的由高到低的第2个比特位取1时，第二辅链路资源所在的时隙位置为n-k-4+2-1＝时隙n-k-3。也就是说，第一指示域携带的指示信息为1000、0100、0010、0001中的一个或多个，第二电子设备接收到辅链路辅助信息后，即可确定出第一辅链路资源所在的时隙，进而根据辅链路辅助信息的第一指示域确定出第二辅链路资源的时域位置。
除了利用比特位图指示时隙偏移外，还可以采用log 2T个比特值表示T个值，每个值表示不同的时隙偏移。例如，第一预留周期为4个时隙，即T＝2，则log 2T＝2。假设第一辅链路资源位于时隙n-k-4，则可以用00、01、10、11分别表示时隙n-k-4、时隙n-k-3、时隙n-k-2、时隙n-k-1。例如，第一信息域为10，则表示将第一辅链路资源所在的时隙n-k-4向右偏移2个时隙，得到第二辅链路资源的时域位置，该时域位置为n-k-2。
其次，频域位置。
辅链路辅助信息携带的第二信息域可通过如下两种方式指示第二辅链路资源的频域位置：
方式一：第二信息域携带资源标识符值RIV，所述RIV用于指示所述第二辅链路资源的起始子信道和所述第二辅链路资源包含的子信道个数。
示例性的，假设资源池中总的子信道个数为L，则资源标识符值(Resource indicator value，RIV)的指示方式共需比特数为log 2[L(L+1)/2]。
方式二、所述第二信息域携带位图，所述位图用于指示所述第二辅链路资源包含的子信道的范围。
示例性的，请参照图6，图6是本申请实施例提供的辅链路通信的资 源选择方法中频域表示示意图。请参照图6，资源池中总的子信道个数为L，将资源池中的所有子信道划分为N分，得到N部分。采用比特位图表示时，每个比特指示其中的一份。例如，N＝4，即将资源池中的所有子信道划分为4份，每份包含L/4个子信道，则1000、0100、0010、0001分别表示第一部分、第二部分、第三部分和第四部分。
另外，也可以采用log 2N个比特值表示N个值，N由网络配置或预配置。当N＝4时，log 2N＝2，则00、01、10、11分别表示第一部分、第二部分、第三部分和第四部分。
最后，第二预留周期。
辅链路辅助信息的第三信息域携带预设长度的指示信息，不同的指示信息用于指示不同的预留周期。
示例性的，NR V2X支持的周期为0、[1:99]、100ms、200ms、300ms、400ms、500ms、600ms、700ms、800ms、900ms、1000ms。其中，[1:99]表示1ms、2ms……99ms共99个值。网络配置或预配置其中的16个，该16个第二预留周期可通过4个比特表示。因此，第一电子设备在第三信息域内写入4比特，如0001等，第二电子设备接收到辅链路辅助信息后，即可从16个第二预留周期中确定出0001表示的第二预留周期。
上述实施例中，第一辅链路资源的第一预留周期并不是一成不变的。示例性的，可参见图7，图7是本申请实施例提供的辅链路通信的资源选择方法中第一预留周期的变化示意图。
请参照图7，第一电子设备发送的辅链路辅助信息有辅链路控制信道或辅链路数据信道承载，用于发送辅链路辅助信息的第一辅链路资源由第一电子设备通过NR V2X mode2感知选择并周期性预留，第一预留周期为T，例如为4个时隙。由于mode2中预留的资源具有预留次数。当达到预设次数后，如，时隙n-4上，第一电子设备发现第一辅链路资源的预留次数为0，即第一电子设备不能继续使用最近一次利用mode2感知并选择的第一辅链路资源，该些第一预留资源如图中斜线填充部分所示。此时，第一电子设备重新进行资源选择并预留资源，重新选择出的第一辅链路资源如图中。
上述实施例中，第一电子设备确定第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期时，从第i-1 个第一预留周期内，确定至少一个目标时隙，目标时隙是第二电子设备和至少一个第三电子设备用于发送辅链路数据的辅链路资源所在的时隙。之后，第一电子设备根据至少一个目标时隙，从所述第i-1个第一预留周期内确定出所述至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期。
示例性的，第三电子设备和第一电子设备可以是同一个设备或不同的设备。第一电子设备确定出目标时隙，该目标时隙上的辅链路资源可以称之为半双工资源，即第二电子设备和至少一个第三电子设备在同一个时隙上均发送辅链路数据的辅链路资源所在的时隙。
确定出目标时隙后，第二电子设备就可以根据该各目标时隙，从第i-1个第一预留周期内确定出第二辅链路资源和各第二辅链路资源的第二预留周期。例如，若第一电子设备向第二电子设备告知第i-1个第一预留周期内的不可用资源，则第一电子设备直接将目标时隙的相关信息通过辅链路辅助信息发送给第二电子设备。再如，若第一电子设备向第二电子设备告知第i-1个第一预留周期内的可用资源，则第一电子设备将各目标时隙和第一辅链路资源外的其他资源的相关信息通过辅链路辅助信息发送给第二电子设备。
上述实施例中，主要描述了第二电子设备如何根据第一电子设备的辅链路辅助信息选择用于辅链路通信的资源。实际实现时，第二电子设备基于感知的资源选择方式并结合接收到的辅链路辅助信息进行辅链路资源选择。下面，对上述实施例中，第二电子设备如何基于感知的资源选择方式并结合接收到的辅链路辅助信息进行辅链路资源选择。示例性的，可参见图8。
图8是本申请实施例提供的辅链路通信的资源选择方法的示意图。请参照图8，其他电子设备为第二电子设备外的电子设备，第二电子设备是时隙n进行辅链路资源选择，则第二电子设备在资源选择窗内选择用于辅链路通信的辅链路资源。资源选择窗的起始时域位置为n+T 1，资源选择窗的结束时域位置为n+T2，T1取决于用户实现，且需满足0≤T1≤T proc，1，T2取决于用户实现且满足小于剩余的包延迟预算(packet delay budget，PDB)，其中，T proc，1为用户数据处理时间。第二电子设备根据资源感知窗内的感知结果，从资源选择窗内排除被其他用户占用的辅链路资源，最 后上报资源选择窗内的候选资源总数的Z％，第二电子设备的高层在在这些候选资源中随机选择一个资源用于辅链路通信，Z的取值例如为20等，本申请实施例并不限制，其它值可根据后续讨论确定后添加。资源感知窗的时域范围为[n-X,n]，x为网络配置或预配置，在1100毫秒和100毫秒中选取。
NR V2X通信支持周期性预留资源和多次传输预留资源。
周期性预留资源：如图8所示，其他电子设备选择资源1为传输资源后，在资源1上传输PSCCH、辅链路物理层数据信道(physical sidelink shared chanenl，PSSCH)的时候，会在PSCCH中携带一个周期指示域，指示该资源间隔该周期后的对应资源被该电子设备占用。当第二电子设备在资源1上接收到PSCCH并成功译码时，就可以知道后面哪个资源也被其他电子设备预留占用l，第二电子设备在资源选择窗内进行资源选择的时候，就可以排除已经被预留占用了的资源，避免传输资源碰撞。
多次传输预留资源：NR V2X还支持基于盲重传(blind retransmission)和混合自动重传(Hybrid Automatic Repeat reQuest，HARQ)的多次传输预留资源。如图8所示，其他电子设备选择资源1为传输资源后，在资源1上传输PSCCH、PSSCH的时候，会在PSCCH中携带一个时间间隔指示域以及频域信息指示域，其中，时间间隔指示域可以指示资源2与资源1之间的间隔、资源3与资源1之间的时间间隔，频域信息指示域可以指示资源2在频域的起始位置及包含的子信道个数，以及资源3在频域的起始位置及包含的子信道个数，资源1、资源2和资源3包含的子信道个数相等。当第二电子设备在资源1上接收到PSCCH并成功译码时，就可以知道资源2和资源3也被其他电子设备占用了，第二电子设备在进行资源选择的时候既可以排除已经被占用的资源，避免传输资源碰撞。
第二电子设备排除NR V2X通信中的周期性预留资源和多次传输预留资源外，还根据辅链路辅助信息排除半双工资源。由此可见：本申请实施例中，第二电子设备选择辅链路资源时，利用基于感知的资源选择方式并结合接收到的辅链路辅助信息进行辅链路资源选择。
下述为本申请装置实施例，可以用于执行本申请方法实施例。对于本申请装置实施例中未披露的细节，请参照本申请方法实施例。
图9为本申请实施例提供的一种通信装置的结构示意图。该通信装置 100可以通过软件和/或硬件的方式实现。如图9所示，该通信装置100包括：
处理单元11，用于确定第一辅链路资源和第一预留周期，所述第一预留周期用于指示所述第一辅链路资源的周期，确定第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，i≥2且为整数；
收发单元12，用于在第i个第一预留周期内的第一辅链路资源上，向第二电子设备发送辅链路辅助信息，所述辅链路辅助信息用于指示所述至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，所述第i个第一预留周期位于所述第二电子设备的资源感知窗内。
一种可行的设计中，对于所述至少一个第二辅链路资源中的每个第二辅链路资源，所述辅链路辅助信息包含第一信息域、第二信息域和第三信息域，其中，所述第一信息域用于指示所述第二辅链路资源的时域位置，所述第二信息域用于指示所述第二辅链路资源的频域位置，所述第三信息域用于指示所述第二辅链路资源的第二预留周期。
一种可行的设计中，所述第一信息域携带指示信息，所述指示信息用于指示时隙偏移，所述时域位置是将第一时隙偏移所述时隙偏移后得到的，所述第一时隙是所述第i-1个第一资源预留周期内的第一辅链路资源所在的时隙。
一种可行的设计中，所述第二信息域携带资源标识符值RIV，所述RIV用于指示所述第二辅链路资源的起始子信道和所述第二辅链路资源包含的子信道个数；或者，所述第二信息域携带位图，所述位图用于指示所述第二辅链路资源包含的子信道的范围。
一种可行的设计中，所述第三信息域携带预设长度的指示信息，不同的指示信息用于指示不同的预留周期。
一种可行的设计中，所述处理单元11，还用于确定所述第一辅链路资源的预留次数N，所述2≤i≤N，所述N为整数，经过所述预留次数个第一预留周期后，重新确定所述第一辅链路资源和所述第一预留周期，所述预留次数N是网络配置的，所述N≥1且为整数。
一种可行的设计中，所述处理单元11确定第一辅链路资源和第一预留周期时，用于通过新无线模式2确定所述第一辅链路资源和所述第一预留 周期；或者，所述处理单元11确定第一辅链路资源和第一预留周期时，用于根据所述收发单元12接收到的网络设备发送的配置信息确定所述第一辅链路资源和所述第一预留周期，所述配置信息用于指示所述网络设备配置或预配置的所述第一辅链路资源。
一种可行的设计中，所述处理单元11在确定第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期时，用于从第i-1个第一预留周期内，确定至少一个目标时隙，所述目标时隙是所述第二电子设备和至少一个第三电子设备均发送辅链路数据的辅链路资源所在的时隙，根据所述至少一个目标时隙，从所述第i-1个第一预留周期内确定出所述至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期。
一种可行的设计中，所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，除所述第一辅链路资源和各所述目标时隙外的其他辅链路资源中的一个或多个。
一种可行的设计中，所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，所述第一辅链路资源或各所述目标时隙上的辅链路资源。
本申请实施例提供的通信装置，可以执行上述实施例中第一电子设备的动作，其实现原理和技术效果类似，在此不再赘述。
图10为本申请实施例提供的一种通信装置的结构示意图。该通信装置200可以通过软件和/或硬件的方式实现。如图10所示，该通信装置200包括：
收发单元21，用于在第i个第一预留周期内的第一辅链路资源上，接收来自第一电子设备的辅链路辅助信息，所述辅链路辅助信息用于指示所述第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，所述第i个第一预留周期位于所述第二电子设备的资源感知窗内，i≥2且为整数；
处理单元22，用于在资源选择时刻，根据所述至少一个第二辅链路资源和各所述第二预留周期，从资源选择窗内选择用于辅链路通信的资源，所述资源选择时刻位于所述资源感知窗之后且位于所述资源选择窗之前。
一种可行的设计中，对于所述至少一个第二辅链路资源中的每个第二辅链路资源，所述辅链路辅助信息包含第一信息域、第二信息域和第三信 息域中，其中，所述第一信息域用于指示所述第二辅链路资源的时域位置，所述第二信息域用于指示所述第二辅链路资源的频域位置，所述第三信息域用于指示所述第二辅链路资源的第二预留周期。
一种可行的设计中，所述第一信息域携带指示信息，所述指示信息用于指示时隙偏移，所述时域位置是将第一时隙偏移所述时隙偏移后得到的，所述第一时隙是所述第i-1个第一资源预留周期内的第一辅链路资源所在的时隙。
一种可行的设计中，所述第二信息域携带资源标识符值RIV，所述RIV用于指示所述第二辅链路资源的起始子信道和所述第二辅链路资源包含的子信道个数；或者，所述第二信息域携带位图，所述位图用于指示所述第二辅链路资源包含的子信道的范围。
一种可行的设计中，所述第三信息域携带预设长度的指示信息，不同的指示信息用于指示不同的预留周期。
一种可行的设计中，所述处理单元22，当所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，除所述第一辅链路资源和目标时隙上的辅链路资源外的其他辅链路资源中的一个或多个时，具体用于在资源选择时刻，根据所述第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，从所述资源选择窗内确定出预留的第二辅链路资源，所述目标时隙是所述第二电子设备和至少一个第三电子设备均发送辅链路数据的辅链路资源所在的时隙，所述目标时隙至少为一个；从所述资源选择窗内预留的第二辅链路资源中选择用于辅链路通信的资源。
一种可行的设计中，所述处理单元22，当所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，所述第一辅链路资源或目标时隙上的辅链路资源时，具体用于在资源选择时刻，根据所述第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，从所述资源选择窗内确定出预留的第二辅链路资源，所述目标时隙是所述第二电子设备和至少一个第三电子设备均发送辅链路数据的辅链路资源所在的时隙，所述目标时隙至少为一个，从所述资源选择窗内的预留的第二辅链路资源外的其他辅链路资源中选择用于辅链路通信的资源。
本申请实施例提供的通信装置，可以执行上述实施例中第二电子设备的 动作，其实现原理和技术效果类似，在此不再赘述。
图11为本申请实施例提供的一种电子设备的结构示意图。如图11所示，该电子设备300包括：
处理器31和存储器32；
所述存储器32存储计算机执行指令；
所述处理器31执行所述存储器32存储的计算机执行指令，使得所述处理器31执行如上第一电子设备执行的辅链路通信的资源选择方法；或者，使得所述处理器31执行如上第二电子设备执行的辅链路通信的资源选择方法。
处理器31的具体实现过程可参见上述方法实施例，其实现原理和技术效果类似，本实施例此处不再赘述。
可选地，该电子设备300还包括通信部件33。其中，处理器31、存储器32以及通信部件33可以通过总线34连接。
本申请实施例还提供一种可读存储介质，所述可读存储介质中存储有计算机执行指令，所述计算机执行指令被处理器执行时用于实现如上第一电子设备执行的辅链路通信的资源选择方法；或者，所述计算机执行指令被处理器执行时用于实现如上第二电子设备执行的辅链路通信的资源选择方法。
本申请实施例还提供一种计算机程序产品，当所述计算机程序产品在第一终端设备上运行时，用于实现第一电子设备执行的辅链路通信的资源选择方法；或者，当所述计算机程序产品在第二电子设备上运行时，用于实现第一电子设备执行的辅链路通信的资源选择方法。
本领域普通技术人员可以理解：实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一计算机可读取存储介质中。该程序在执行时，执行包括上述各方法实施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或 者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (36)

  1. 一种辅链路通信的资源选择方法，其特征在于，包括：
    第一电子设备确定第一辅链路资源和第一预留周期，所述第一预留周期用于指示所述第一辅链路资源被周期性预留的周期；
    所述第一电子设备确定第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，i≥2且为整数；
    所述第一电子设备在第i个第一预留周期内的第一辅链路资源上，向第二电子设备发送辅链路辅助信息，所述辅链路辅助信息用于指示所述至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，所述第i个第一预留周期位于所述第二电子设备的资源感知窗内。
  2. 根据权利要求1所述的方法，其特征在于，
    对于所述至少一个第二辅链路资源中的每个第二辅链路资源，所述辅链路辅助信息包含第一信息域、第二信息域和第三信息域，其中，所述第一信息域用于指示所述第二辅链路资源的时域位置，所述第二信息域用于指示所述第二辅链路资源的频域位置，所述第三信息域用于指示所述第二辅链路资源的第二预留周期。
  3. 根据权利要求2所述的方法，其特征在于，所述第一信息域携带指示信息，所述指示信息用于指示时隙偏移，所述时域位置是将第一时隙偏移所述时隙偏移后得到的，所述第一时隙是所述第i-1个第一资源预留周期内的第一辅链路资源所在的时隙。
  4. 根据权利要求2所述的方法，其特征在于，
    所述第二信息域携带资源标识符值RIV，所述RIV用于指示所述第二辅链路资源的起始子信道和所述第二辅链路资源包含的子信道个数；
    或者，
    所述第二信息域携带位图，所述位图用于指示所述第二辅链路资源包含的子信道的范围。
  5. 根据权利要求2所述的方法，其特征在于，所述第三信息域携带预设长度的指示信息，不同的指示信息用于指示不同的预留周期。
  6. 根据权利要求1～5任一项所述的方法，其特征在于，还包括：
    所述第一电子设备确定所述第一辅链路资源的预留次数N，2≤i≤N， 所述N为整数；
    经过所述预留次数个第一预留周期后，所述第一电子设备重新确定所述第一辅链路资源和所述第一预留周期，所述预留次数N是网络配置的，所述N≥1且为整数。
  7. 根据权利要求1～5任一项所述的方法，其特征在于，所述第一电子设备确定第一辅链路资源和第一预留周期，包括：
    所述第一电子设备通过新无线模式2确定所述第一辅链路资源和所述第一预留周期；
    或者，
    所述第一电子设备接收网络设备发送的配置信息，所述配置信息用于指示所述网络设备配置或预配置的所述第一辅链路资源。
  8. 根据权利要求1～5任一项所述的方法，其特征在于，所述第一电子设备确定第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，包括：
    所述第一电子设备从第i-1个第一预留周期内，确定至少一个目标时隙，所述目标时隙是所述第二电子设备和至少一个第三电子设备均发送辅链路数据的辅链路资源所在的时隙；
    所述第一电子设备根据所述至少一个目标时隙，从所述第i-1个第一预留周期内确定出所述至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期。
  9. 根据权利要求8所述的方法，其特征在于，
    所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，除所述第一辅链路资源和各所述目标时隙外的其他辅链路资源中的一个或多个。
  10. 根据权利要求8所述的方法，其特征在于，
    所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，所述第一辅链路资源或各所述目标时隙上的辅链路资源。
  11. 一种辅链路通信的资源选择方法，其特征在于，包括：
    第二电子设备在第i个第一预留周期内的第一辅链路资源上，接收来自第一电子设备的辅链路辅助信息，所述辅链路辅助信息用于指示所述第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，所述第i个第一预留周期位于所述第二电子设备的资 源感知窗内，i≥2且为整数；
    所述第二电子设备在资源选择时刻，根据所述至少一个第二辅链路资源和各所述第二预留周期，从资源选择窗内选择用于辅链路通信的资源。
  12. 根据权利要求11所述的方法，其特征在于，对于所述至少一个第二辅链路资源中的每个第二辅链路资源，所述辅链路辅助信息包含第一信息域、第二信息域和第三信息域中，其中，所述第一信息域用于指示所述第二辅链路资源的时域位置，所述第二信息域用于指示所述第二辅链路资源的频域位置，所述第三信息域用于指示所述第二辅链路资源的第二预留周期。
  13. 根据权利要求12所述的方法，其特征在于，所述第一信息域携带指示信息，所述指示信息用于指示时隙偏移，所述时域位置是将第一时隙偏移所述时隙偏移后得到的，所述第一时隙是所述第i-1个第一资源预留周期内的第一辅链路资源所在的时隙。
  14. 根据权利要求12所述的方法，其特征在于，
    所述第二信息域携带资源标识符值RIV，所述RIV用于指示所述第二辅链路资源的起始子信道和所述第二辅链路资源包含的子信道个数；
    或者，
    所述第二信息域携带位图，所述位图用于指示所述第二辅链路资源包含的子信道的范围。
  15. 根据权利要求12所述的方法，其特征在于，所述第三信息域携带预设长度的指示信息，不同的指示信息用于指示不同的预留周期。
  16. 根据权利要求11-15任一项所述的方法，其特征在于，所述第二电子设备在资源选择时刻，根据所述至少一个第二辅链路资源和各所述第二预留周期，从资源选择窗内选择用于辅链路通信的资源，包括：
    当所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，除所述第一辅链路资源和目标时隙上的辅链路资源外的其他辅链路资源中的一个或多个时，所述第二电子设备在资源选择时刻，根据所述第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，从所述资源选择窗内确定出预留的第二辅链路资源，所述目标时隙是所述第二电子设备和至少一个第三电子设备均发送辅链路数据的辅链路资源所在的时隙，所述目标时隙至少为一个；
    从所述资源选择窗内预留的第二辅链路资源中选择用于辅链路通信的资源。
  17. 根据权利要求11-15任一项所述的方法，其特征在于，所述第二电子设备在资源选择时刻，根据所述至少一个第二辅链路资源和各所述第二预留周期，从资源选择窗内选择用于辅链路通信的资源，包括：
    当所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，所述第一辅链路资源或目标时隙上的辅链路资源时，所述第二电子设备在资源选择时刻，根据所述第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，从所述资源选择窗内确定出预留的第二辅链路资源，所述目标时隙是所述第二电子设备和至少一个第三电子设备均发送辅链路数据的辅链路资源所在的时隙，所述目标时隙至少为一个；
    从所述资源选择窗内的预留的第二辅链路资源外的其他辅链路资源中选择用于辅链路通信的资源。
  18. 一种通信装置，其特征在于，包括：
    处理单元，用于确定第一辅链路资源和第一预留周期，所述第一预留周期用于指示所述第一辅链路资源的周期，确定第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，i≥2且为整数；
    收发单元，用于在第i个第一预留周期内的第一辅链路资源上，向第二电子设备发送辅链路辅助信息，所述辅链路辅助信息用于指示所述至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，所述第i个第一预留周期位于所述第二电子设备的资源感知窗内。
  19. 根据权利要求18所述的装置，其特征在于，
    对于所述至少一个第二辅链路资源中的每个第二辅链路资源，所述辅链路辅助信息包含第一信息域、第二信息域和第三信息域，其中，所述第一信息域用于指示所述第二辅链路资源的时域位置，所述第二信息域用于指示所述第二辅链路资源的频域位置，所述第三信息域用于指示所述第二辅链路资源的第二预留周期。
  20. 根据权利要求19所述的装置，其特征在于，
    所述第一信息域携带指示信息，所述指示信息用于指示时隙偏移，所 述时域位置是将第一时隙偏移所述时隙偏移后得到的，所述第一时隙是所述第i-1个第一资源预留周期内的第一辅链路资源所在的时隙。
  21. 根据权利要求19所述的装置，其特征在于，
    所述第二信息域携带资源标识符值RIV，所述RIV用于指示所述第二辅链路资源的起始子信道和所述第二辅链路资源包含的子信道个数；
    或者，
    所述第二信息域携带位图，所述位图用于指示所述第二辅链路资源包含的子信道的范围。
  22. 根据权利要求19所述的装置，其特征在于，所述第三信息域携带预设长度的指示信息，不同的指示信息用于指示不同的预留周期。
  23. 根据权利要求18-22任一项所述的装置，其特征在于，
    所述处理单元，还用于确定所述第一辅链路资源的预留次数N，所述2≤i≤N，所述N为整数，经过所述预留次数个第一预留周期后，重新确定所述第一辅链路资源和所述第一预留周期，所述预留次数N是网络配置的，所述N≥1且为整数。
  24. 根据权利要求18-22任一项所述的装置，其特征在于，
    所述处理单元确定第一辅链路资源和第一预留周期时，用于通过新无线模式2确定所述第一辅链路资源和所述第一预留周期；
    或者，
    所述处理单元确定第一辅链路资源和第一预留周期时，用于根据所述收发单元接收到的网络设备发送的配置信息确定所述第一辅链路资源和所述第一预留周期，所述配置信息用于指示所述网络设备配置或预配置的所述第一辅链路资源。
  25. 根据权利要求18-22任一项所述的装置，其特征在于，
    所述处理单元在确定第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期时，用于从第i-1个第一预留周期内，确定至少一个目标时隙，所述目标时隙是所述第二电子设备和至少一个第三电子设备均发送辅链路数据的辅链路资源所在的时隙，根据所述至少一个目标时隙，从所述第i-1个第一预留周期内确定出所述至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期。
  26. 根据权利要求25所述的装置，其特征在于，所述至少一个第二辅 链路资源是所述第i-1个第一预留周期内，除所述第一辅链路资源和各所述目标时隙外的其他辅链路资源中的一个或多个。
  27. 根据权利要求25所述的装置，其特征在于，所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，所述第一辅链路资源或各所述目标时隙上的辅链路资源。
  28. 一种通信装置，其特征在于，包括：
    收发单元，用于在第i个第一预留周期内的第一辅链路资源上，接收来自第一电子设备的辅链路辅助信息，所述辅链路辅助信息用于指示所述第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，所述第i个第一预留周期位于第二电子设备的资源感知窗内，i≥2且为整数；
    处理单元，用于在资源选择时刻，根据所述至少一个第二辅链路资源和各所述第二预留周期，从资源选择窗内选择用于辅链路通信的资源，所述资源选择时刻位于所述资源感知窗之后且位于所述资源选择窗之前。
  29. 根据权利要求28所述的装置，其特征在于，对于所述至少一个第二辅链路资源中的每个第二辅链路资源，所述辅链路辅助信息包含第一信息域、第二信息域和第三信息域中，其中，所述第一信息域用于指示所述第二辅链路资源的时域位置，所述第二信息域用于指示所述第二辅链路资源的频域位置，所述第三信息域用于指示所述第二辅链路资源的第二预留周期。
  30. 根据权利要求29所述的装置，其特征在于，所述第一信息域携带指示信息，所述指示信息用于指示时隙偏移，所述时域位置是将第一时隙偏移所述时隙偏移后得到的，所述第一时隙是所述第i-1个第一资源预留周期内的第一辅链路资源所在的时隙。
  31. 根据权利要求29所述的装置，其特征在于，
    所述第二信息域携带资源标识符值RIV，所述RIV用于指示所述第二辅链路资源的起始子信道和所述第二辅链路资源包含的子信道个数；
    或者，
    所述第二信息域携带位图，所述位图用于指示所述第二辅链路资源包含的子信道的范围。
  32. 根据权利要求29所述的装置，其特征在于，
    所述第三信息域携带预设长度的指示信息，不同的指示信息用于指示不同的预留周期。
  33. 根据权利要求28-32任一项所述的装置，其特征在于，
    所述处理单元，当所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，除所述第一辅链路资源和目标时隙上的辅链路资源外的其他辅链路资源中的一个或多个时，具体用于在资源选择时刻，根据所述第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，从所述资源选择窗内确定出预留的第二辅链路资源，所述目标时隙是所述第二电子设备和至少一个第三电子设备均发送辅链路数据的辅链路资源所在的时隙，所述目标时隙至少为一个；从所述资源选择窗内预留的第二辅链路资源中选择用于辅链路通信的资源。
  34. 根据权利要求28-32任一项所述的装置，其特征在于，
    所述处理单元，当所述至少一个第二辅链路资源是所述第i-1个第一预留周期内，所述第一辅链路资源或目标时隙上的辅链路资源时，具体用于在资源选择时刻，根据所述第i-1个第一预留周期内的至少一个第二辅链路资源和各所述第二辅链路资源的第二预留周期，从所述资源选择窗内确定出预留的第二辅链路资源，所述目标时隙是所述第二电子设备和至少一个第三电子设备均发送辅链路数据的辅链路资源所在的时隙，所述目标时隙至少为一个，从所述资源选择窗内的预留的第二辅链路资源外的其他辅链路资源中选择用于辅链路通信的资源。
  35. 一种电子设备，其特征在于，包括处理器、存储器及存储在所述存储器上并可在处理器上运行的计算机程序，所述处理器执行所述程序时使得所述电子设备实现如上述权利要求1-10任一项所述的方法；或者，所述处理器执行所述程序时使得所述电子设备实现如上述权利要求11-17任一项所述的方法。
  36. 一种可读存储介质，其特征在于，所述可读存储介质中存储有指令，当其在电子设备上运行时，使得电子设备执行如权利要求1-10任一项所述的方法；或者，使得电子设备执行如权利要求11-17任一项所述的方法。
PCT/CN2021/085710 2020-04-10 2021-04-06 辅链路通信的资源选择方法及通信装置 WO2021204123A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010280817.4A CN113518324B (zh) 2020-04-10 2020-04-10 辅链路通信的资源选择方法及通信装置
CN202010280817.4 2020-04-10

Publications (1)

Publication Number Publication Date
WO2021204123A1 true WO2021204123A1 (zh) 2021-10-14

Family

ID=78022965

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/085710 WO2021204123A1 (zh) 2020-04-10 2021-04-06 辅链路通信的资源选择方法及通信装置

Country Status (2)

Country Link
CN (1) CN113518324B (zh)
WO (1) WO2021204123A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017028747A1 (zh) * 2015-08-14 2017-02-23 中兴通讯股份有限公司 一种无线资源选择方法及终端设备
CN107666648A (zh) * 2016-07-29 2018-02-06 普天信息技术有限公司 资源冲突解决方法、基站和终端
CN110266449A (zh) * 2018-03-12 2019-09-20 华为技术有限公司 一种通信方法及通信设备
CN110574476A (zh) * 2017-05-05 2019-12-13 高通股份有限公司 设备到设备通信系统中的中继
CN110972101A (zh) * 2018-09-28 2020-04-07 展讯半导体(南京)有限公司 副链路资源的分配和获取方法及装置、以及计算机可读介质

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110267226B (zh) * 2018-03-12 2021-07-20 华为技术有限公司 信息发送的方法和装置
US20200029340A1 (en) * 2018-07-19 2020-01-23 Samsung Electronics Co., Ltd. Method and apparatus for nr v2x resource selection
CN110958096B (zh) * 2018-09-27 2021-09-28 大唐移动通信设备有限公司 一种资源指示方法及终端

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017028747A1 (zh) * 2015-08-14 2017-02-23 中兴通讯股份有限公司 一种无线资源选择方法及终端设备
CN107666648A (zh) * 2016-07-29 2018-02-06 普天信息技术有限公司 资源冲突解决方法、基站和终端
CN110574476A (zh) * 2017-05-05 2019-12-13 高通股份有限公司 设备到设备通信系统中的中继
CN110266449A (zh) * 2018-03-12 2019-09-20 华为技术有限公司 一种通信方法及通信设备
CN110972101A (zh) * 2018-09-28 2020-04-07 展讯半导体(南京)有限公司 副链路资源的分配和获取方法及装置、以及计算机可读介质

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
APPLE: "Remaining Details on Resource Allocation for Mode 2", 3GPP DRAFT; R1-2000852, vol. RAN WG1, 15 February 2020 (2020-02-15), pages 1 - 5, XP051853470 *

Also Published As

Publication number Publication date
CN113518324B (zh) 2023-04-07
CN113518324A (zh) 2021-10-19

Similar Documents

Publication Publication Date Title
US11889483B2 (en) Method and apparatus for determining resource pool
US10687334B2 (en) Method and apparatus for determining resource pool
US11937216B2 (en) Method and apparatus for determining data feedback resource
CN112423273B (zh) 协调通信方法、用户终端及计算机可读存储介质
KR20200050848A (ko) Nr v2x 시스템에서 harq 피드백 절차 수행 방법 및 그 장치
US11039461B2 (en) Method and device of resource allocations for scheduling assignments in device to device communications
CN110972101A (zh) 副链路资源的分配和获取方法及装置、以及计算机可读介质
US20220400527A1 (en) Method and device for determining resources to be sensed for device-to-device communication in wireless communication system
US20230269705A1 (en) Method and device for selecting resource in wireless communication system
US20230156670A1 (en) Partial sensing method and device for device-to-device communication in wireless communication system
US20210385844A1 (en) Scheduling method for sidelink communication, terminal apparatus, and network apparatus
US20220417933A1 (en) Response information transmission method, communications device, and network device
CN110690944A (zh) 信道状态信息的优先级发送、确定方法及装置、存储介质、用户设备
TWI659665B (zh) 一種資源調度和碰撞指示的方法及設備
EP3618537A1 (en) Message transmission method and apparatus, terminal device and base station
WO2021204123A1 (zh) 辅链路通信的资源选择方法及通信装置
CN114423080A (zh) 资源分配的方法和设备
EP4346303A1 (en) Resource reselection method and apparatus, device, and storage medium
US20210273767A1 (en) Method for flexible feedback in v2x transmission and user equipment
WO2021228163A1 (zh) 确定资源的方法、装置及系统
CN104620652B (zh) 测量Gap后的上行信息传输方法和装置
WO2020088112A1 (zh) V2x传输的反馈方法、装置及用户设备
CN111527785A (zh) 一种信息反馈方法及装置、计算机存储介质
US20230292348A1 (en) Beam-based sidelink communication method and apparatus
WO2023131741A1 (en) Method for overhead reduction in nr sidelink inter-ue coordination (iuc)

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21785374

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21785374

Country of ref document: EP

Kind code of ref document: A1