WO2023078205A1 - 确定候选资源集合的方法及装置 - Google Patents

确定候选资源集合的方法及装置 Download PDF

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Publication number
WO2023078205A1
WO2023078205A1 PCT/CN2022/128572 CN2022128572W WO2023078205A1 WO 2023078205 A1 WO2023078205 A1 WO 2023078205A1 CN 2022128572 W CN2022128572 W CN 2022128572W WO 2023078205 A1 WO2023078205 A1 WO 2023078205A1
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Prior art keywords
candidate
terminal
resource
resources
candidate resources
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PCT/CN2022/128572
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English (en)
French (fr)
Inventor
黄海宁
黎超
杨帆
张天虹
米翔
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华为技术有限公司
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Publication of WO2023078205A1 publication Critical patent/WO2023078205A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of wireless communication, and in particular to a method and device for determining a candidate resource set.
  • a discontinuous reception (DRX) mode is introduced.
  • DRX mode part of the time is active time (active time), and part of the time is inactive time (inactive time).
  • active time part of the time is active time
  • inactive time part of the time is inactive time
  • the terminal can monitor sidelink control information (sidelink control information, SCI).
  • SCI sidelink control information
  • the terminal may skip monitoring the SCI, that is, the terminal does not monitor the SCI.
  • the sending terminal may use resource allocation mode 1 or resource allocation mode 2 to determine transmission resources.
  • Resource allocation method 1 means that the network device allocates transmission resources for the sending terminal, and the network device usually needs to manage resources in the communication system, so it will allocate resources within the activation time of the receiving terminal to the sending terminal so that the receiving terminal can receive data.
  • Resource allocation mode 2 is that the sending terminal determines transmission resources by itself. How the sending terminal includes the transmission resources determined by itself in the activation time of the receiving terminal is a problem that needs to be solved urgently.
  • the embodiments of the present application provide a method and device for determining a candidate resource set, which can make the candidate resources in the candidate resource set determined by the sending terminal be within the activation time of the receiving terminal, so that the receiving terminal can receive data.
  • a method for determining a candidate resource set may be a first terminal; it may also be a module applied to the first terminal, such as a chip or a chip system.
  • the following description is made by taking the execution subject as the first terminal as an example.
  • the method includes: determining a first set of candidate resources, the first set of candidate resources is a set of candidate resources within a resource selection window, the candidate resources include at least one frequency domain unit corresponding to a first time unit, and the first time unit is One of a plurality of time units in the resource selection window, the first candidate resource set includes at least one first candidate resource, and the first candidate resource is a candidate resource within the activation time of the second terminal within the resource selection window ; Exclude candidate resources that meet the first condition in the first candidate resource set, and determine a second candidate resource set; if in the second candidate resource set, the number of the first candidate resources is less than or equal to the first threshold, then determine A third set of candidate resources, the third set of candidate resources includes at least one first candidate resource among the candidate resources included in the second set of candidate resources and excluded candidate resources, the first candidate included in the third set of candidate resources The number of resources is greater than or equal to a first threshold.
  • the first terminal may determine the first set of candidate resources, and exclude candidate resources from the first set of candidate resources according to the first condition to obtain the second set of candidate resources.
  • the second set of candidate resources if the number of first candidate resources within the activation time of the second terminal is less than or equal to the first threshold, a third set of candidate resources may be determined, so that in the third set of candidate resources, the first A quantity of candidate resources is greater than or equal to a first threshold.
  • the set of candidate resources determined by the first terminal may include candidate resources within the activation time of the second terminal, so that the second terminal can receive the data sent by the first terminal.
  • the first terminal determines the first candidate resource among the excluded candidate resources as a candidate resource in the third candidate resource set, but does not determine the first candidate resource among the excluded candidate resources
  • Two candidate resources are determined as candidate resources in the third candidate resource set.
  • unnecessary candidate resources can be avoided from being included in the third set of candidate resources; on the other hand, the excluded candidate resources Reliability cannot be guaranteed, therefore, not determining the second candidate resource among the excluded candidate resources as a candidate resource in the third candidate resource set can reduce the probability of resource conflict among the candidate resources in the third candidate resource set, and improve Reliability of data transmitted on candidate resources in the third set of candidate resources.
  • the first condition includes overlapping with resources indicated by the first sidelink control information, and the first sidelink control information assumes that the first terminal does not monitor the resources within the resource awareness window The sidelink control information heard on the time unit of .
  • the first terminal may exclude candidate resources corresponding to time units that are not monitored from the first candidate resource set.
  • the frequency domain resources indicated by the first sidelink control information are all frequency domain units in the resource pool, and the resource reservation period indicated by the first sidelink control information is configured in the One of the resource reservation periods on the resource pool.
  • the first terminal may exclude candidate resources from the first set of candidate resources according to the resources indicated by the first sidelink indication information.
  • the determining the third candidate resource set includes: excluding candidate resources in the first candidate resource set that meet a second condition, and determining the third candidate resource, the second condition includes The inactivation time of the two terminals overlaps with the resource indicated by the first sidelink control information.
  • the first terminal may exclude candidate resources in the first set of candidate resources that are located within the inactive time of the second terminal and overlap with resources indicated by the first sidelink control information, so that the third The number of first candidate resources (candidate resources within the resource selection window within the activation time of the second terminal) in the candidate resource set is greater than or equal to the first threshold.
  • determining the third set of candidate resources includes: selecting at least one first candidate resource among the excluded candidate resources, and determining it as a candidate resource in the third set of candidate resources. Based on the above method, the first terminal may determine at least one first candidate resource among the excluded candidate resources as a candidate resource in the third set of candidate resources, so that the number of first candidate resources in the third set of candidate resources is greater than or equal to the first threshold.
  • the at least one first candidate resource is randomly determined from the excluded first candidate resources; or, the at least one first candidate resource is determined randomly from the excluded first candidate resources
  • the first terminal may randomly determine the first candidate resource among the excluded first candidate resources, and determine the randomly determined first candidate resource as a candidate resource in the third candidate resource set, so that the third candidate resource The number of first candidate resources in the set is greater than or equal to a first threshold.
  • randomly determining the first candidate resource among the excluded candidate resources can make the interference random, and the implementation is relatively simple.
  • the first terminal may determine the N first candidate resources that are at the front in the time domain among the excluded first candidate resources as the candidate resources in the third candidate resource set, so that the first candidate resources in the third candidate resource set The number of resources is greater than or equal to a first threshold.
  • determining the N first candidate resources at the front in the time domain among the excluded first candidate resources as the candidate resources in the third candidate resource set can make the data to be sent be sent as soon as possible.
  • the method further includes: excluding candidate resources satisfying a fourth condition in the third set of candidate resources, and determining a fourth set of candidate resources, where the fourth condition includes The resources indicated by the information overlap, and the measured value of the corresponding reference signal received power RSRP is greater than or equal to the first critical value, and the second sidelink control information is the sidelink control information received by the first terminal within the resource sensing window.
  • Link control information if in the fourth candidate resource set, the number of the first candidate resource is less than or equal to the second threshold, determine a fifth candidate resource set, the fifth candidate resource set includes the fourth candidate resource set At least one first candidate resource among the included candidate resources and the excluded candidate resources in the third candidate resource set, the number of first candidate resources included in the fifth candidate resource set is greater than or equal to a second threshold.
  • the first terminal can exclude candidate resources with greater interference from the third candidate resource set to obtain a fourth candidate resource set, and the number of first candidate resources in the fourth candidate resource set is less than or If it is equal to the second threshold, determine the fifth candidate resource set, so that the number of the first candidate resources in the fifth candidate resource set is greater than or equal to the second threshold.
  • the fifth candidate resource set determined by the first terminal may include candidate resources within the activation time of the second terminal, so that the second terminal can receive the data sent by the first terminal.
  • the first terminal determines the first candidate resource among the excluded candidate resources in the third set of candidate resources as a candidate resource in the fifth set of candidate resources, and does not use the third
  • a second candidate resource (a candidate resource located within the inactive time of the second terminal) among the excluded candidate resources in the candidate resource set is determined as a candidate resource in the fifth candidate resource set.
  • unnecessary candidate resources can be avoided in the fifth candidate resource set; on the other hand, the reliability of the excluded candidate resources in the third candidate resource set Therefore, the second candidate resource among the excluded candidate resources in the third candidate resource set is not determined as the candidate resource in the fifth candidate resource set, which can reduce the generation resources of candidate resources in the fifth candidate resource set.
  • the probability of collision improves the reliability of data transmitted on the candidate resources in the fifth candidate resource set.
  • determining the fifth candidate resource set includes: excluding candidate resources in the third candidate resource set that satisfy a fifth condition, and determining the fifth candidate resource set, where the fifth condition includes During the activation time of the second terminal, there is overlap with the resource indicated by the second sidelink control information, and the corresponding RSRP measurement value is greater than or equal to the third critical value, and it is within the inactivation time of the second terminal, There is overlap with the resource indicated by the second side link control information, and the corresponding measured value of RSRP is greater than or equal to the first critical value, and the third critical value is greater than the first critical value.
  • the first terminal may re-exclude candidate resources from the third candidate resource set by increasing the RSRP threshold, so that the number of first candidate resources in the fifth candidate resource set is greater than or equal to the first threshold.
  • determining the fifth set of candidate resources includes: selecting P first candidate resources from the first candidate resources excluded in the third set of candidate resources in descending order of RSRP measurement values resources, determine the P first candidate resources as candidate resources in the fifth candidate resource set, and P is a positive integer.
  • the first terminal may determine the M first candidate resources with the highest RSRP measurement values among the excluded first candidate resources in the third candidate resource set as candidate resources in the fifth candidate resource set, so that the first The quantity of the first candidate resource in the set of five candidate resources is greater than or equal to the first threshold. It can be understood that selecting the first candidate resource in descending order of the RSRP measurement value can make the candidate resource with low interference preferentially selected. Since data transmission using low-interference resources has a higher success rate than using high-interference resources, selecting the first candidate resource in descending order of RSRP measurement values can improve reliability of data transmission.
  • the second threshold is a product of a second ratio and the number of candidate resources in the first time window, and the second ratio is greater than or equal to 0 and less than 1.
  • the first candidate resource in the fifth candidate resource set may occupy a certain proportion of candidate resources within the first time window, so that the subsequent first terminal has room to select resources.
  • the first condition includes overlapping with the resource indicated by the second side link control information, and the corresponding measured value of the reference signal received power RSRP is greater than or equal to the first critical value
  • the second The second side link control information is the side link control information received by the first terminal within the resource awareness window. Based on the foregoing method, the first terminal may exclude candidate resources with greater interference from the first set of candidate resources.
  • determining the third set of candidate resources includes: excluding candidate resources in the first set of candidate resources that satisfy a third condition, and determining the third set of candidate resources, where the third condition includes During the activation time of the second terminal, there is overlap with the resource indicated by the second sidelink control information, and the corresponding RSRP measurement value is greater than or equal to the second critical value, and it is within the inactivation time of the second terminal, There is overlap with the resource indicated by the second side link control information, and the corresponding measured value of RSRP is greater than or equal to the first critical value, and the second critical value is greater than the first critical value.
  • the first terminal may exclude candidate resources from the first candidate resource set again by increasing the RSRP threshold, so that the number of first candidate resources in the third candidate resource set is greater than or equal to the first threshold.
  • determining the third set of candidate resources includes: selecting M first candidate resources from the first candidate resources excluded in the first set of candidate resources in descending order of RSRP measurement values resources, determining the M first candidate resources as candidate resources in the third candidate resource set, where M is a positive integer.
  • the first terminal may determine the M first candidate resources with the highest RSRP measurement values among the excluded first candidate resources in the first candidate resource set as candidate resources in the third candidate resource set, so that the third The quantity of the first candidate resource in the candidate resource set is greater than or equal to the first threshold. It can be understood that selecting the first candidate resource in descending order of the RSRP measurement value can make the candidate resource with low interference preferentially selected. Since data transmission using low-interference resources has a higher success rate than using high-interference resources, selecting the first candidate resource in descending order of RSRP measurement values can improve data transmission reliability.
  • the first threshold is a product of a first ratio and the number of candidate resources in the first time window, and the first ratio is greater than or equal to 0 and less than 1.
  • the first candidate resource in the third candidate resource set can occupy a certain proportion of candidate resources in the first time window, so that the subsequent first terminal has room to select resources.
  • the first time window is a resource selection window; or, the start position of the time domain of the first time window is the start position of the activation time of the second terminal within the resource selection window,
  • the end position of the time domain of the first time window is the end position of the time domain of the resource selection window; or, the start position of the time domain of the first time window is the start of the activation time of the second terminal within the resource selection window
  • the position where the end position of the time domain of the first time window is the end position of the time domain of the activation time of the second terminal within the resource selection window.
  • the start position of the time domain of the resource selection window is n+T 1
  • the end position of the time domain of the resource selection window is n+T 2
  • the start position of the time domain of the resource selection window is The starting position of the resource selection window is n+T 3
  • the time domain end position of the resource selection window is n+T 2 ; wherein, the first terminal is triggered to perform resource selection in time unit n, T 1 and T 2 are positive integers, and T 3 is After n+T 1 , the start position in the time domain of the activation time of the second terminal. Based on the above method, the time domain position of the resource selection window can be determined.
  • the method further includes: acquiring the activation time of the second terminal. Based on the above method, the first terminal can obtain the activation time of the second terminal, so that the first terminal can determine candidate resources according to the activation time of the second terminal.
  • acquiring the activation time of the second terminal includes: acquiring first indication information, where the first indication information is used to indicate the time domain position of the activation time of the second terminal; according to the first The indication information determines the activation time of the second terminal. Based on the above method, the first terminal may determine the activation time of the second terminal according to the first indication information.
  • the first indication information includes at least one group of start positions in the time domain of the activation time of the second terminal and the length of the activation time of the second terminal; or, the first indication information includes at least A set of time-domain start positions and time-domain end positions of the activation time of the second terminal; or, the first indication information includes m bits, the m bits correspond to m time units, and the value of each bit is used to indicate Whether the time unit corresponding to the bit is within the activation time of the second terminal.
  • the first indication information can indicate the time domain position of the activation time of the second terminal in multiple ways, which improves the diversity and flexibility of the time domain position of the activation time indicated by the first indication information.
  • the first indication information includes m bits
  • the symbol where the activation time of the second terminal is located is different from the symbol where the physical sidelink control channel PSCCH is located. completely overlap, the first time unit is within the inactive time of the second terminal, and the first time unit is any one of the m time units. Based on the above method, it can be determined whether a time unit is within the inactive time or the active time of the second terminal.
  • a method for determining a candidate resource set may be a first terminal; it may also be a module applied to the first terminal, such as a chip or a chip system.
  • the following description is made by taking the execution subject as the first terminal as an example.
  • the method includes: excluding candidate resources satisfying a first preset condition in a first set of candidate resources, and determining a second set of candidate resources, the first set of candidate resources is a set of candidate resources within a resource selection window, and the candidate resources include the first At least one frequency domain unit corresponding to a time unit, the first time unit is one of multiple time units in the resource selection window, the first candidate resource set includes at least one first candidate resource, and the first candidate resource Selecting a candidate resource within the window within the activation time of the second terminal for the resource, the first preset condition includes overlapping with the resource indicated by the second sidelink control information, and the measurement of the corresponding reference signal received power RSRP The value is greater than or equal to the first critical value, the second sidelink control information is the sidelink control information received by the first terminal within the resource awareness window; according to the candidate resources in the second candidate resource set number, and the number of first candidate resources in the second set of candidate resources, determine a third set of candidate resources, the third set of candidate resources includes at least one first candidate resource, and
  • the first terminal excludes the candidate resources satisfying the first preset condition in the first set of candidate resources, and after determining the second set of candidate resources, it can , and the number of first candidate resources in the second set of candidate resources, determine a third set of candidate resources such that the third set of candidate resources includes at least one first candidate resource, and the number of candidate resources in the third set of candidate resources is greater than or equal to first threshold.
  • the second The three candidate resource sets include: selecting at least one first candidate resource among the excluded candidate resources, and determining it as a candidate resource in the third candidate resource set.
  • the first terminal may set At least one first candidate resource among the excluded candidate resources is determined as a candidate resource in a third set of candidate resources, so that the third set of candidate resources includes at least one first candidate resource, and the candidate resources in the third set of candidate resources The number is greater than or equal to the first threshold.
  • the at least one first candidate resource is randomly determined from the excluded first candidate resources; or, the excluded first candidate resources are ranked from high to low according to the RSRP measurement value
  • the M first candidate resources selected in the order of are determined as candidate resources in the third candidate resource set, where M is a positive integer.
  • the first terminal may randomly determine at least one first candidate resource among the excluded first candidate resources, and determine the randomly determined first candidate resource as a candidate resource in the third candidate resource set, so that the third The set of candidate resources includes at least one first candidate resource, and the number of candidate resources in the third set of candidate resources is greater than or equal to a first threshold.
  • randomly determining the first candidate resource among the excluded candidate resources can make the interference random, and the implementation is relatively simple.
  • the first terminal may determine M first candidate resources with the highest RSRP measurement values among the excluded first candidate resources as candidate resources in the third set of candidate resources, so that the third set of candidate resources includes at least one first candidate resources, and the number of candidate resources in the third set of candidate resources is greater than or equal to the first threshold. It can be understood that selecting the first candidate resource in descending order of the RSRP measurement value can make the candidate resource with low interference preferentially selected. Since data transmission using low-interference resources has a higher success rate than using high-interference resources, selecting the first candidate resource in descending order of RSRP measurement values can improve data transmission reliability.
  • the second Three candidate resource sets including: excluding candidate resources satisfying a second preset condition in the first candidate resource set, and determining the third candidate resource set, the second preset condition includes being within the activation time of the second terminal, and The resource indicated by the second sidelink control information overlaps, and the corresponding RSRP measurement value is greater than or equal to the second critical value, and is within the inactivation time of the second terminal, and the second sidelink
  • the resources indicated by the control information overlap, and the measured value of the corresponding RSRP is greater than or equal to the first critical value, and the second critical value is greater than the first critical value.
  • the first terminal may increase the The method for the RSRP threshold corresponding to the candidate resource within the activation time of the second terminal is to exclude the candidate resource from the first candidate resource set again, so that the third candidate resource set includes at least one first candidate resource, and the third candidate resource set includes at least one first candidate resource, and the third candidate resource set includes The number of candidate resources is greater than or equal to a first threshold.
  • the Determining a third set of candidate resources includes: excluding candidate resources satisfying a third preset condition in the first set of candidate resources, and determining the third set of candidate resources, where the third preset condition includes The resources indicated by the control information overlap, and the corresponding RSRP measurement value is greater than or equal to a third critical value, where the third critical value is greater than the first critical value.
  • the first terminal may pass The method for increasing the RSRP threshold is to exclude candidate resources from the first set of candidate resources again, so that the third set of candidate resources includes at least one first candidate resource, and the number of candidate resources in the third set of candidate resources is greater than or equal to the first threshold.
  • Determining a third set of candidate resources includes: excluding candidate resources in the first set of candidate resources that satisfy a fourth preset condition, and determining the third set of candidate resources; the fourth preset condition includes an inactive Within a time period, there is overlap with the resources indicated by the second sidelink control information, and the corresponding RSRP measurement value is greater than or equal to the first critical value, or the fourth preset condition includes within the activation time, and overlap with the resource indicated by the second side link control information, and the corresponding RSRP measurement value is greater than or equal to the fourth critical value, and within the inactivation time of the second terminal, and with The resources indicated by the second side link control information overlap, and the corresponding RSRP measurement value is greater than or equal to the first critical value, and the fourth critical value is greater than the first critical value.
  • the first terminal may The second candidate resources in the first set of candidate resources (candidate resources within the inactive time of the second terminal within the resource selection window) are excluded, but the first candidate resources are not excluded, so that the third set of candidate resources includes at least one of the first set of candidate resources.
  • a candidate resource, and the number of candidate resources in the third candidate resource set is greater than or equal to the first threshold.
  • the first terminal may re-exclude candidate resources from the first set of candidate resources by increasing the RSRP threshold corresponding to the candidate resources within the activation time of the second terminal, so that the third set of candidate resources includes at least one first candidate resource set. resources, and the number of candidate resources in the third candidate resource set is greater than or equal to the first threshold.
  • Determining a third set of candidate resources includes: determining at least one first candidate resource in the first set of candidate resources as a candidate resource in the third set of candidate resources.
  • the first terminal At least one first candidate resource in the first set of candidate resources may be determined as a candidate resource in a third set of candidate resources, so that the third set of candidate resources includes at least one first candidate resource, and the candidate resource in the third set of candidate resources The number of resources is greater than or equal to a first threshold.
  • a method for determining a candidate resource set is provided, and the communication device performing the method for determining a candidate resource set may be a first terminal; it may also be a module applied to the first terminal, such as a chip or a chip system.
  • the following description is made by taking the execution subject as the first terminal as an example.
  • the method includes: determining a first set of candidate resources, the first set of candidate resources is a set of candidate resources in a resource selection window, the candidate resources include at least one frequency domain unit corresponding to a first time unit, and the first time unit is One of a plurality of time units in the resource selection window, the first candidate resource set includes at least one first candidate resource, and the first candidate resource is a candidate resource within the activation time of the second terminal within the resource selection window ; Excluding candidate resources that meet the first condition in the first set of candidate resources, and determining a second set of candidate resources, the first condition includes being within the inactivation time of the second terminal, and being consistent with the first sidelink control information
  • the indicated resources overlap; the first sidelink control information is the sidelink control information monitored by the first terminal on the assumption that the first terminal does not monitor within the resource awareness window.
  • the candidate resources within the activation time of the second terminal are not excluded.
  • the second candidate resource set can include candidate resources within the activation time of the second terminal, so that the second terminal can receive the data sent by the first terminal.
  • the method further includes: excluding candidate resources in the second set of candidate resources that satisfy a second condition, and determining a third set of candidate resources; the second condition includes an inactive time, and overlap with the resources indicated by the second sidelink control information, and the corresponding reference signal received power is greater than or equal to the first critical value, the second sidelink control information is the first terminal in the Sidelink control information received within the resource awareness window.
  • the third candidate resource set can include candidate resources within the activation time of the second terminal, so that the second terminal can receive the data sent by the first terminal.
  • a method for determining a candidate resource set may be a first terminal; it may also be a module applied to the first terminal, such as a chip or a chip system.
  • the following description is made by taking the execution subject as the first terminal as an example.
  • the method includes: determining a first candidate resource set and a second candidate resource set, the first candidate resource set is a set of candidate resources within the activation time of the second terminal within a resource selection window, and the second candidate resource set is the resource Select a set of candidate resources within the window, or, the second set of candidate resources is a set of candidate resources within the inactive time of the second terminal within the resource selection window, or, the second set of candidate resources is the first time A set of candidate resources in the window, the starting position of the first time window is the starting position of the activation time of the second terminal in the resource selection window, and the end position of the first time window is the end of the resource selection window position; selecting a candidate resource from the first candidate resource set to obtain a third candidate resource set; selecting a candidate resource from the second candidate resource set to obtain a fourth candidate resource set.
  • the first terminal may determine the first set of candidate resources and the second set of candidate resources, select candidate resources from the first set of candidate resources and the second set of candidate resources respectively, and obtain the third set of candidate resources and a fourth set of candidate resources.
  • the candidate resources in the first candidate resource set can occupy a certain proportion in the third candidate resource set
  • the candidate resources in the second candidate resource set can occupy a certain proportion in the fourth candidate resource set, so that the first terminal can select Available transfer resources.
  • selecting candidate resources from the first set of candidate resources to obtain a third set of candidate resources includes: excluding candidate resources satisfying the first condition in the first set of candidate resources, and determining a fifth candidate resource A set of resources, the first condition includes overlapping with the resources indicated by the first sidelink control information, and the first sidelink control information assumes that the first terminal listens on time units that are not monitored within the resource awareness window The received sidelink control information; exclude the candidate resources that meet the second condition in the fifth candidate resource set, and determine the third candidate resource set, the second condition includes resources indicated by the second sidelink control information There is overlap, and the measured value of the corresponding reference signal received power RSRP is greater than or equal to the first critical value, and the second sidelink control information is the sidelink control information received by the first terminal within the resource sensing window .
  • the first terminal may select candidate resources from the first set of candidate resources to obtain a third set of candidate resources.
  • excluding candidate resources satisfying the first condition in the first set of candidate resources, and determining a fifth set of candidate resources includes: excluding candidate resources satisfying the first condition in the first set of candidate resources , determine a first intermediate set; if the number of candidate resources in the first intermediate set is less than a first threshold, determine the first set of candidate resources as the fifth set of candidate resources. Based on the foregoing method, the first terminal may determine a fifth candidate resource set.
  • the first threshold is a product of a first ratio and the number of candidate resources in the first candidate resource set, and the first ratio is greater than or equal to 0 and less than 1. Based on the foregoing method, the first terminal may determine the first threshold.
  • excluding candidate resources satisfying the second condition in the fifth candidate resource set, and determining the third candidate resource set include: excluding candidates satisfying the second condition in the fifth candidate resource set Resources, determine a second intermediate set; if the number of candidate resources in the second intermediate set is less than the second threshold, exclude candidate resources that meet the third condition in the fifth candidate resource set, and determine the third candidate resource set, the The third condition includes overlapping with the resources indicated by the second side link control information, and the corresponding RSRP measurement value is greater than or equal to a second critical value, where the second critical value is greater than the first critical value.
  • the first terminal may determine a third candidate resource set.
  • the second threshold is a product of a second ratio and the number of candidate resources in the first candidate resource set, and the second ratio is greater than or equal to 0 and less than 1. Based on the foregoing method, the first terminal may determine the second threshold.
  • the first ratio and the second ratio are independently configured. Based on the above method, the first ratio and the second ratio may be the same or different, and the first ratio and the second ratio may be configured as required.
  • selecting candidate resources from the second candidate resource set to obtain a fourth candidate resource set includes: excluding candidate resources in the second candidate resource set that satisfy the first condition, and determining the sixth A set of candidate resources: excluding candidate resources satisfying the second condition in the sixth set of candidate resources, and determining the fourth set of candidate resources.
  • the first terminal may select candidate resources from the second set of candidate resources to obtain a fourth set of candidate resources.
  • excluding candidate resources satisfying the first condition in the second set of candidate resources, and determining a sixth set of candidate resources includes: excluding candidates satisfying the first condition in the second set of candidate resources resources, determine a third intermediate set; if the number of candidate resources in the third intermediate set is less than a third threshold, determine the second set of candidate resources as the sixth set of candidate resources. Based on the foregoing method, the first terminal may determine a sixth candidate resource set.
  • the third threshold is a product of a third ratio and the number of candidate resources in the second candidate resource set, and the third ratio is greater than or equal to 0 and less than 1. Based on the foregoing method, the first terminal may determine the third threshold.
  • excluding candidate resources satisfying the second condition in the sixth candidate resource set, and determining the fourth candidate resource set includes: excluding candidate resources satisfying the second condition in the sixth candidate resource set determining a fourth intermediate set of candidate resources; if the number of candidate resources in the fourth intermediate set is less than a fourth threshold, excluding candidate resources satisfying the fourth condition in the sixth set of candidate resources, and determining the fourth set of candidate resources,
  • the fourth condition includes overlapping with the resource indicated by the second side link control information, and the corresponding measured value of RSRP is greater than or equal to a third critical value, where the third critical value is greater than the first critical value.
  • the first terminal may determine a fourth candidate resource set.
  • the fourth threshold is a product of a fourth ratio and the number of candidate resources in the second candidate resource set, and the fourth ratio is greater than or equal to 0 and less than 1. Based on the foregoing method, the first terminal may determine the fourth threshold.
  • the third ratio and the fourth ratio are configured independently. Based on the above method, the third ratio and the fourth ratio may be the same or different, and the third ratio and the fourth ratio may be configured as required.
  • the first ratio and the third ratio are configured independently, and/or, the second ratio and the fourth ratio are configured independently.
  • the candidate resources in the first candidate resource set and the candidate resources in the second candidate resource set may be interfered to different degrees, therefore, the first ratio and the third ratio are configured separately, and/or, the second Scale and 4th scale are configured separately.
  • the first ratio and the third ratio may be the same or different, and/or the second ratio and the fourth ratio may be the same or different.
  • the sum of the number of candidate resources in the third candidate resource set and the number of candidate resources in the fourth candidate resource set is greater than or equal to a fifth threshold, where the fifth threshold is the fifth ratio and the first The product of the sum of the number of candidate resources in a set of candidate resources and the number of candidate resources in the second set of candidate resources.
  • the candidate resources in the third candidate resource set and the candidate resources in the fourth candidate resource set can occupy a certain proportion of the candidate resources in the first candidate resource set and the candidate resources in the second candidate resource set, so that the first terminal There is room for choice of resources.
  • a method for determining a candidate resource set may be a first terminal; it may also be a module applied to the first terminal, such as a chip or a chip system.
  • the following description is made by taking the execution subject as the first terminal as an example.
  • the method includes: acquiring a first resource set, the first resource set includes at least one first resource, the first resource is used for the first terminal to send first data to the second terminal, and the first data is sent by the first terminal Among the data corresponding to a plurality of logical channels of the device, the priority is the highest, and the first resource is a candidate resource within the activation time of the second terminal; the second data is acquired, and the priority of the second data is higher than that of the first data The priority of the second data is the data sent by the first terminal to the third terminal, and the third terminal is different from the second terminal; according to the first resource set and the activation time of the third terminal, determine the received data terminal.
  • the first terminal after the first terminal obtains the first resource set corresponding to the first data and the second data with a higher priority than the first data, it can The activation time of the third terminal determines the terminal receiving the data, so that the first terminal can reasonably arrange the order of sending data.
  • determining the terminal receiving data according to the first resource set and the activation time of the third terminal includes: if the first resource in the first resource set is located in the third terminal's within the activation time, use the first resource to send the second data to the third terminal; or, if the first resource in the first resource set is not within the activation time of the third terminal, use the The first resource sends the first data to the second terminal; or, if the first resource in the first resource set is not within the activation time of the third terminal, use the first resource to send the first data to the fourth terminal
  • the terminal sends third data, and the priority corresponding to the third data is the highest among the data to be sent corresponding to multiple receiving terminals that are in the activation time on the first resource; or, if the first resource in the first resource set resources are not within the activation time of the third terminal, and there are resources in the first resource set within the activation time of the third terminal, use the resources in the first resource set to send the second terminal to the third terminal data; or, if
  • acquiring the first resource set includes: acquiring a candidate resource set, and selecting a candidate resource from the candidate resource set according to the activation time of the second terminal to obtain the first resource set; the method further includes: A candidate resource is selected from the candidate resource set according to the activation time of the third terminal to obtain a second resource set, and the resources in the second resource set are within the activation time of the third terminal.
  • the first terminal can re-create a sidelink grant according to the activation time of the third terminal, or re-select resources for the first or retransmission of the third terminal in the candidate resource set for the sidelink grant, so that the data with the highest priority (that is, the second data) can be sent preferentially to avoid increasing the time delay of high-priority services.
  • a communication device for implementing the above method.
  • the communication device may be the first terminal in the first aspect above, or a device including the first terminal above; or, the communication device may be the first terminal in the second aspect above, or a device including the first terminal above;
  • the communication device may be the first terminal in the third aspect above, or a device that includes the first terminal above; or, the communication device may be the first terminal in the fourth aspect above, or a device that includes the first terminal above device; alternatively, the communication device may be the first terminal in the fifth aspect above, or a device including the first terminal above.
  • the communication device includes a corresponding module, unit, or means (means) for implementing the above method, and the module, unit, or means may be implemented by hardware, software, or by executing corresponding software on hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • the communication device may include a processing module.
  • the processing module may be used to implement the processing functions in any of the above aspects and any possible implementation manners thereof.
  • the processing module may be, for example, a processor.
  • a communication device including: a processor; the processor is configured to be coupled with a memory, and after reading an instruction in the memory, execute the method according to any one of the above aspects according to the instruction.
  • the communication device may be the first terminal in the first aspect above, or a device including the first terminal above; or, the communication device may be the first terminal in the second aspect above, or a device including the first terminal above; Alternatively, the communication device may be the first terminal in the third aspect above, or a device that includes the first terminal above; or, the communication device may be the first terminal in the fourth aspect above, or a device that includes the first terminal above device; alternatively, the communication device may be the first terminal in the fifth aspect above, or a device including the first terminal above.
  • the communications device further includes a memory, where the memory is configured to store necessary program instructions and data.
  • the communication device is a chip or a chip system.
  • the communication device when it is a system-on-a-chip, it may consist of chips, or may include chips and other discrete devices.
  • a communication device including: a processor and an interface circuit; the interface circuit is used to receive a computer program or instruction and transmit it to the processor; the processor is used to execute the computer program or instruction, so that the communication
  • the device executes the method described in any one of the above aspects.
  • the communication device is a chip or a chip system.
  • the communication device when it is a system-on-a-chip, it may consist of chips, or may include chips and other discrete devices.
  • a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is run on a computer, the computer can execute the method described in any one of the above-mentioned aspects.
  • a computer program product including instructions, which, when run on a computer, enable the computer to execute the method described in any one of the above aspects.
  • the technical effect brought about by any one of the possible implementations from the sixth aspect to the tenth aspect can refer to any one of the first to the fifth aspects above or the different possible implementations of any one aspect. The technical effect of this will not be repeated here.
  • FIG. 1 is a schematic diagram of a DRX cycle provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of a candidate single time slot resource provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a hardware structure of a communication device provided by an embodiment of the present application.
  • FIG. 5 is a first schematic flowchart of a method for determining a candidate resource set provided by an embodiment of the present application
  • FIG. 6 is a schematic diagram of the first time window provided by the embodiment of the present application.
  • FIG. 7 is a schematic diagram of the activation time and inactivation time of the second terminal provided by the embodiment of the present application.
  • FIG. 8 is a schematic diagram of the activation time of the second terminal and the time domain position of the PSCCH provided by the embodiment of the present application;
  • FIG. 9 is a second schematic flowchart of a method for determining a candidate resource set provided by an embodiment of the present application.
  • FIG. 10 is a third schematic flowchart of a method for determining a candidate resource set provided by an embodiment of the present application.
  • FIG. 11 is a fourth schematic flowchart of a method for determining a candidate resource set provided by an embodiment of the present application.
  • FIG. 12 is a schematic flow diagram of a data transmission method provided in an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • a resource pool can be understood as a collection of time-frequency resources.
  • the resource pool may be a set of time-frequency resources used by a terminal in a sidelink (sidelink, SL) to transmit a physical sidelink shared channel (physical sidelink shared channel, PSSCH).
  • SL sidelink
  • PSSCH physical sidelink shared channel
  • one terminal can be configured with one or more resource pools.
  • the SCI can be divided into two levels.
  • the first-level SCI is carried in a physical layer sidelink control channel (physical sidelink control channel, PSCCH), and the second-level SCI is carried in the PSSCH.
  • PSCCH physical sidelink control channel
  • the first-level SCI includes a priority field. This field may be used to indicate the priority of data scheduled by the SCI.
  • the value range of the priority field is 1-8, 1 represents the highest priority, and 8 represents the lowest priority, and the smaller the value of the priority field, the higher the priority of the data scheduled by the SCI.
  • the resource sensing window may also be referred to as a sensing window.
  • the terminal can monitor in the sensing window to obtain the sensing result.
  • the sensing results may include SCI decoding results (or PSCCH decoding results) and reference signal received power (reference signal received power, RSRP) measurement results.
  • Resource selection window (resource selection window, RSW)
  • the terminal can perform resource selection at the RSW according to the sensing result, so as to determine resources for data transmission.
  • the terminal is configured with the DRX function, part of the time in a DRX cycle of the terminal is active time, and part of the time is inactive time.
  • the terminal can monitor the SCI, such as two-level SCI, and during the inactive time, the terminal does not monitor the SCI, so as to achieve the purpose of energy saving. It can be understood that when the time for monitoring the SCI is shortened, the terminal can further save energy.
  • the activation time may include at least one of the following: the running time of the duration timer (on-DurationTimer), the running time of the inactivity timer (Inactivity timer), the hybrid automatic repeat request round-trip time timer (HARQ RTT timer) The running time of the retransmission timer (Retransmission timer), or the time for the terminal to receive the channel state information (channel state information, CSI) report (CSI report).
  • a DRX cycle may include a duration (ON duration) and a possible OFF duration (possible OFF duration).
  • the terminal can use on-DurationTimer to maintain the activation time.
  • the terminal receives the SCI for scheduling a new SL transmission, it can start an Inactivity timer, and the terminal is in the active time when the Inactivity timer is running.
  • the terminal starts the SL HARQ RTT timer after the end symbol/slot of physical sidelink feedback channel (PSFCH) transmission. If the sending terminal does not send PSFCH, the receiving terminal starts the SL HARQ RTT timer after the end symbol/slot of the PSFCH resource.
  • PSFCH physical sidelink feedback channel
  • the terminal During the running time of the HARQ RTT timer, the terminal is active. When the HARQ RTT timer expires, the terminal can start the Retransmission timer. The terminal is active during the running time of the Retransmission timer to monitor the second-level SCI in the PSCCH and PSSCH, so that the terminal can receive retransmission. If the terminal sends a CSI request (CSI request) message, it needs to receive the CSI report, and the time for receiving the CSI report is the activation time.
  • CSI request CSI request
  • the relationship between the duration, the possible off-duration and the running time of the inactivity timer can be shown in FIG. 1 .
  • the activation time may be the current active time (current active time), or the activation time may be the current active time and the future active time (future active time).
  • the current active time is the activation time of the receiving terminal when the media access control (media access control, MAC) layer of the sending terminal triggers resource selection.
  • the future active time can be understood as the activation time for the receiving terminal to receive retransmissions.
  • the receiving terminal knows the time unit of the retransmission resource according to the resources indicated by the received SCI. Even if the current receiving terminal is inactive at the time unit of the retransmission resource, it knows that it will receive the retransmission at the time unit of the retransmission resource. Afterwards, the receiving terminal can be in the activation time at the time unit where the retransmission resource is located in order to receive the retransmission, and the activation time at this time can be understood as future active time.
  • the terminal may determine the transmission resource by using the resource allocation mode 2, and please refer to the following description for the specific process.
  • the high layer of the terminal may request the physical (PHY) layer of the terminal to perform resource selection, so as to determine a set of candidate resources.
  • the high layer of the terminal can select a resource from the set of candidate resources for transmitting the PSCCH or PSSCH, that is, the high layer of the terminal determines the transmission resource.
  • the upper layer of the terminal can indicate at least one of the following parameters to the physical layer of the terminal: the resource pool where the candidate resource in the candidate resource set is located, the layer 1 priority prio TX , and the remaining packet delay budget (packet delay budget, PDB), the number of frequency domain units L subCH or the resource reservation period P rsvp_TX used for PSCCH or PSSCH transmission in a time unit.
  • PDB packet delay budget
  • the time unit set of the resource pool can be The unit of resource reservation period is millisecond (ms).
  • the unit of the resource reservation period needs to be converted from milliseconds to logical time units.
  • the unit of the resource reservation period can be converted from milliseconds to logical time units by the following formula: Wherein, P rsvp_TX is the resource reservation period in units of milliseconds, and P' rsvp_TX is the resource reservation period in logical time units.
  • T' max is the number of time units in the resource pool. Indicates rounding up.
  • the time unit is a unit in the time domain, and may include at least one time slot, at least one symbol, at least one subframe, absolute time, millisecond, and the like.
  • a frequency domain unit is a unit in the frequency domain, and may include at least one channel, at least one subchannel, at least one carrier, at least one subcarrier, or at least one resource block (resource block, RB), etc.
  • the MAC layer may be understood as a MAC layer entity, or in other words, the MAC layer may be replaced by a MAC layer entity.
  • the physical layer can be understood as a physical layer entity, or in other words, the physical layer can be replaced by a physical layer entity. A unified description is made here, and will not be described in detail later.
  • the time interval of the resource selection window may be [n+T 1 , n+T 2 ].
  • the value of T 1 satisfies
  • the unit of can be a time slot, which can represent the time for the terminal to process the sensing results (such as SCI decoding results and RSRP measurement results).
  • the subcarrier spacing (subcarrier spacing) of the SL bandwidth part (bandwidth part, BWP) is different, The value of is different.
  • the relationship with the subcarrier spacing of SL BWP can be shown in Table 1.
  • the value of T 2 is greater than or equal to T 2min and less than or equal to the remaining PDB.
  • the value of T 2min may be determined by the terminal, but the value of T 2 must be greater than or equal to T 2min and less than or equal to the remaining PDB. If the value of T 2min is greater than or equal to the remaining PDB, then the value of T 2 is the same as the remaining PDB.
  • the value of T 2min is associated with the priority.
  • the priority may be the priority of the data to be sent by the terminal and/or the Layer 1 priority mentioned above.
  • the relationship between the value of T 2min and the priority can be configured by the network device.
  • the value of T 2min may be 1 time slot, 5 time slots, 10 time slots or 20 time slots.
  • S2 The physical layer of the terminal determines a set of candidate single time unit resources.
  • the set of candidate single time unit resources may include multiple candidate single time unit resources.
  • a candidate single time unit resource can be denoted as R x,y .
  • x represents the index of the candidate single time unit resource in the frequency domain
  • y represents the index of the candidate single time unit resource in the time domain. If the time unit set of the resource pool where the resource in the candidate single time unit resource set is located is Then R xy can represent the time unit The consecutive L subCH frequency domain units below.
  • the candidate single time unit resource set includes all candidate single time unit resources under the resource selection window in the resource pool.
  • time slot 1 may include four candidate single time slot resources, namely R 0,1 , R 1,1 , R 2,1 and R 3,1 .
  • R 0,1 indicates that the time domain position is time slot 1, and the frequency domain position is the resource of subchannel 0-subchannel 6;
  • R 1,1 indicates that the time domain position is time slot 1, and the frequency domain position is subchannel 1-subchannel 6
  • R 2,1 indicates that the time domain position is time slot 1, and the frequency domain position is the resource of subchannel 2-subchannel 8;
  • S3 The physical layer of the terminal determines the resource awareness window.
  • the interval of the resource-aware window can be
  • T 0 may be configured by radio resource control (radio resource control, RRC).
  • RRC radio resource control
  • the subcarrier spacing of SL BWP is different, The value of is different.
  • the relationship with the subcarrier spacing of SL BWP can be shown in Table 2. In Table 2, if the subcarrier spacing ⁇ SL of SL BWP is 0, then is 1 time slot; if ⁇ SL is 1, then is 1 time slot; if ⁇ SL is 2, then is 2 time slots; if ⁇ SL is 3, then for 4 time slots.
  • the physical layer of the terminal determines the resource awareness window, it can monitor in the resource awareness window to obtain the SCI decoding result and RSRP measurement result. Subsequently, the physical layer of the terminal can select a resource from the candidate single time unit resource set according to the SCI decoding result and the RSRP measurement result.
  • the critical value A is the threshold of RSRP, which can be recorded as Th(p i , p j ).
  • p i may represent the priority of the SCI indication monitored in the perception window, and p j may represent the layer 1 priority mentioned above.
  • the critical value A is the kth value in the parameter SL-ThresRSRP_p i _p j configured by the RRC.
  • S5 The physical layer of the terminal determines the candidate resource set A.
  • the physical layer of the terminal determines the candidate single time unit resource set as the candidate resource set A.
  • the physical layer of the terminal excludes the candidate resources satisfying the condition A in the candidate resource set A, and determines the candidate resource set B.
  • condition A includes overlapping with resources indicated by the first SCI.
  • the first SCI is the SCI that is monitored by the terminal assuming that the terminal does not monitor in the resource awareness window.
  • the frequency domain resources indicated by the first SCI are all frequency domain units in the resource pool, and the resource reservation period indicated by the first SCI is one of the resource reservation periods configured on the resource pool. That is to say, the condition A is for the time unit that the physical layer of the terminal does not monitor within the resource awareness window. It is assumed that the physical layer of the terminal monitors the first SCI in the time unit that is not monitored, and the candidate resource set A If a candidate resource overlaps with the resource indicated by the first SCI, the candidate resource is excluded, that is, the candidate resource set B does not include the candidate resource.
  • the resources indicated by the first SCI are determined according to the time slot assumed to receive the first SCI, the resource reservation period indicated by the first SCI, and the frequency domain resources indicated by the first-level SCI.
  • the overlapping of two resources may be understood as the complete overlap of the two resources or the partial overlap of the two resources.
  • Partial overlap of two resources can be understood as one resource is located within another resource, or a part of one resource overlaps with a part of another resource, and a unified description is made here, which will not be repeated hereafter.
  • a possible implementation if the number of candidate resources in candidate resource set B is less than threshold A, then determine candidate resource set A as candidate resource set C; if the number of candidate resources in candidate resource set B is greater than or equal to threshold A , then the candidate resource set B is determined as the candidate resource set C.
  • the threshold A is the product of the ratio A and the number of candidate resources in the candidate resource set A.
  • the ratio A is greater than 0 and less than 1.
  • the physical layer of the terminal excludes the candidate resources satisfying the condition B in the candidate resource set C, and determines the candidate resource set D.
  • condition B includes overlapping with the resource indicated by the second SCI, and the measured value of the corresponding RSRP is greater than or equal to the critical value A.
  • the second SCI is the SCI received by the physical layer of the terminal within the resource awareness window. That is to say, condition B refers to the fact that the physical layer of the terminal monitors the second SCI within the resource awareness window. If the physical layer of the terminal monitors the second SCI within the resource awareness window, and a certain If a candidate resource overlaps with the resource indicated by the second SCI, and the RSRP measurement value corresponding to the candidate resource is greater than or equal to the critical value A, then the candidate resource is excluded, that is, the candidate resource set D does not include the candidate resource. It can be understood that the excluded candidate resources are resources with high interference.
  • the RSRP measurement value may be obtained based on PSCCH demodulation reference signal (demodulation reference signal, DMRS) or PSSCH DMRS measurement.
  • the RSRP measurement value corresponding to the candidate resource may be understood as the RSRP measurement value corresponding to the resource indicated by the second SCI overlapping with the candidate resource.
  • the physical layer of the terminal excludes the candidate resource.
  • the physical layer of the terminal is listening to the time unit
  • the second SCI is received, the second SCI includes a resource reservation period field and a priority field, the resource reservation period field indicates P rsvp_RX , and the priority field indicates prio RX .
  • p i in the above S4 may be prio RX .
  • the physical layer of the terminal is listening to the time unit The second SCI is received, or if the resource reservation period field is indicated in the second SCI, the physical layer of the terminal is expected to be in the time unit The same SCI can be received, and the frequency domain unit set and time unit set indicated by the second SCI are determined, and There is overlap.
  • T scal is obtained by converting the unit of T 2 from time units to milliseconds.
  • a possible implementation if the number of candidate resources in the candidate resource set D is less than the threshold A, then increase the critical value A by 3dB, re-execute S5-S9, and obtain the candidate resource set E; if the candidate resource set D If the number of resources is greater than or equal to the threshold A, then the candidate resource set D is determined as the candidate resource set E.
  • the physical layer of the terminal sends the information of the candidate resource set E to the MAC layer of the terminal, so as to indicate the candidate resource set E to the MAC layer of the terminal.
  • the MAC layer of the terminal can select resources from the candidate resource set E for transmitting PSCCH or PSSCH, that is, the MAC layer of the terminal determines the transmission resources, or determines the available resources of PSCCH or PSSCH .
  • the embodiment of the present application provides a method for determining a candidate resource set, which will be introduced in the methods shown in FIG. 5 , FIG. 9 , FIG. 10 and FIG. 11 below.
  • the communication system can be a long term evolution (long term evolution, LTE) system, a fifth generation (5th generation, 5G) communication system, a wireless fidelity (wireless-fidelity, WiFi) system, a third generation partnership project (3rd generation Partnership project, 3GPP) related communication systems, future evolution communication systems, or systems integrating multiple systems, etc., are not limited.
  • 5G can also be called new radio (new radio, NR).
  • new radio new radio
  • FIG. 3 it is a schematic structural diagram of a communication system 30 provided in the embodiment of the present application.
  • a communication system 30 may include one or more terminals 301 and 302.
  • the communication system 30 further includes a terminal 303 .
  • FIG. 3 is only a schematic diagram, and does not constitute a limitation on the applicable scenarios of the technical solution provided by the present application.
  • a terminal can communicate with other terminals through a direct communication link.
  • the direct communication link between the terminal and other terminals may be called a side link or a side link (sidelink, SL).
  • sidelink sidelink
  • the terminal 301 may send data to the terminal 302 through the sidelink. It can be understood that before the terminal 301 sends data to the terminal 302, the method described above may be used to determine the transmission resource for sending data.
  • the terminal in the embodiment of the present application is a device with a wireless transceiver function.
  • Terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water (such as ships, etc.); they can also be deployed in the air (such as on aircraft, balloons, and satellites, etc.).
  • the terminal may also be referred to as a terminal device, and the terminal device may be a user equipment (user equipment, UE), where the UE includes a handheld device, a vehicle-mounted device, a wearable device, or a computing device with a wireless communication function.
  • UE user equipment
  • the UE may be a mobile phone (mobile phone), a tablet computer or a computer with a wireless transceiver function.
  • the terminal device can also be a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a smart Wireless terminals in the power grid, wireless terminals in a smart city, or wireless terminals in a smart home, etc.
  • the device for realizing the function of the terminal may be a terminal; it may also be a device capable of supporting the terminal to realize the function, such as a chip system, and the device may be installed in the terminal or matched with the terminal.
  • the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.
  • the method provided in the embodiment of the present application is described by taking the terminal as an example in which the device for realizing the function of the terminal is used.
  • the terminal may be a wearable device.
  • Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories.
  • a wearable device is not only a hardware device, but also a device that achieves powerful functions through software support, data interaction, and cloud interaction.
  • Wearable smart devices in a broad sense include devices with full functions, large size, and complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application functions and need to be integrated with other devices Devices used in conjunction with smartphones, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the terminal can be a terminal in the Internet of Things (IoT) system.
  • IoT Internet of Things
  • MTC machine type communication
  • RSU roadside unit
  • the terminal of the present application may be a vehicle-mounted module, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit built into a vehicle as one or more components or units.
  • an on-board chip or an on-board unit can implement the method of the present application. Therefore, the embodiments of the present application can be applied to the Internet of Vehicles, such as vehicle to everything (V2X), long term evolution of vehicle communication (long term evolution vehicle, LTE-V), vehicle to vehicle (vehicle to vehicle, V2V) wait.
  • V2X vehicle to everything
  • LTE-V long term evolution vehicle
  • V2V vehicle to vehicle
  • the communication system 30 shown in FIG. 3 is only used as an example, and is not used to limit the technical solution of the present application. Those skilled in the art should understand that in a specific implementation process, the communication system 30 may also include other devices, and at the same time, the number of terminals may also be determined according to specific needs, without limitation.
  • each terminal in FIG. 3 in this embodiment of the present application may also be called a communication device, which may be a general-purpose device or a dedicated device, which is not specifically limited in this embodiment of the present application.
  • each terminal in FIG. 3 of the embodiment of the present application may be implemented by one device, or by multiple devices, or by one or more functional modules in one device.
  • This application The embodiment does not specifically limit this. It can be understood that the above-mentioned functions can be network elements in hardware devices, software functions running on dedicated hardware, or a combination of hardware and software, or instantiated virtualization on a platform (for example, a cloud platform) Function.
  • FIG. 4 is a schematic diagram of a hardware structure of a communication device applicable to an embodiment of the present application.
  • the communication device 40 includes at least one processor 401 and at least one communication interface 404, configured to implement the method provided by the embodiment of the present application.
  • the communication device 40 may also include a communication line 402 and a memory 403 .
  • the processor 401 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, a specific application integrated circuit (application-specific integrated circuit, ASIC), or one or more for controlling the implementation of the application program program integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • Communication line 402 may include a path, such as a bus, for transferring information between the aforementioned components.
  • the communication interface 404 is used for communicating with other devices or communication networks.
  • the communication interface 404 can be any device such as a transceiver, such as an Ethernet interface, a wireless access network (radio access network, RAN) interface, a wireless local area network (wireless local area networks, WLAN) interface, a transceiver, a pin , bus, or transceiver circuits, etc.
  • a transceiver such as an Ethernet interface, a wireless access network (radio access network, RAN) interface, a wireless local area network (wireless local area networks, WLAN) interface, a transceiver, a pin , bus, or transceiver circuits, etc.
  • Memory 403 may be read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM) or other types that can store information and instructions It can also be an electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be programmed by a computer Any other medium accessed, but not limited to.
  • the memory may exist independently and be coupled with the processor 401 through the communication line 402 .
  • the memory 403 can also be integrated with the processor 401 .
  • the memory provided by the embodiment of the present application may generally be non-volatile.
  • the memory 403 is used to store computer-executed instructions involved in executing the solutions provided by the embodiments of the present application, and the execution is controlled by the processor 401 .
  • the processor 401 is configured to execute computer-executed instructions stored in the memory 403, so as to implement the method provided in the embodiment of the present application.
  • the processor 401 may also perform processing-related functions in the methods provided in the following embodiments of the application, and the communication interface 404 is responsible for communicating with other devices or communication networks. The example does not specifically limit this.
  • the computer-executed instructions in the embodiments of the present application may also be referred to as application program codes, which is not specifically limited in the embodiments of the present application.
  • the coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the processor 401 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 4 .
  • the communication device 40 may include multiple processors, for example, the processor 401 and the processor 407 in FIG. 4 .
  • Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
  • the communication device 40 may further include an output device 405 and/or an input device 406 .
  • An output device 405 is coupled to the processor 401 and can display information in a variety of ways.
  • the output device 405 may be a liquid crystal display (liquid crystal display, LCD), a light emitting diode (light emitting diode, LED) display device, a cathode ray tube (cathode ray tube, CRT) display device, or a projector (projector) wait.
  • the input device 406 is coupled to the processor 401 and can receive user input in various ways.
  • the input device 406 may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.
  • composition structure shown in FIG. 4 does not constitute a limitation to the communication device.
  • the communication device may include more or less components than shown in the figure, or combine some components, or a different arrangement of components.
  • a and/or B can mean: A exists alone, A and B exist simultaneously, and There are three cases of B, where A and B can be singular or plural.
  • expressions like "at least one of A, B, and C" or "at least one of A, B, or C” are generally used to mean any of the following: A alone; B alone; C exists; A and B exist together; A and C exist simultaneously; B and C exist simultaneously; A, B, and C exist simultaneously.
  • the above is an example of the three elements of A, B and C to illustrate the optional items of the item.
  • words such as “first” and “second” may be used to distinguish technical features with the same or similar functions.
  • the words “first” and “second” do not limit the number and execution order, and the words “first” and “second” do not necessarily mean that they must be different.
  • words such as “exemplary” or “for example” are used to represent examples, illustrations or illustrations, and any embodiment or design described as “exemplary” or “for example” should not be interpreted It is more preferred or more advantageous than other embodiments or design solutions.
  • the use of words such as “exemplary” or “for example” is intended to present related concepts in a specific manner for easy understanding.
  • the terminal may perform some or all of the steps in the embodiment of the present application, these steps are only examples, and the embodiment of the present application may also perform other steps or variations of various steps.
  • each step may be performed in a different order presented in the embodiment of the present application, and it may not be necessary to perform all the steps in the embodiment of the present application.
  • FIG. 5 it is a method for determining a candidate resource set provided by the embodiment of the present application, and the method includes S501-S503.
  • S501 The first terminal determines a first candidate resource set.
  • the physical layer of the first terminal determines the first candidate resource set.
  • the first terminal may be any terminal in the communication system 30 shown in FIG. 3 .
  • the first terminal may be terminal 301 , terminal 302 or terminal 303 .
  • the first set of candidate resources is a set of candidate resources within the resource selection window.
  • the first terminal may select resources in the resource selection window for transmitting the PSCCH and/or PSSCH. Since the resources in the resource selection window may be used for transmission of the PSCCH and/or PSSCH, the resources in the resource selection window may be called candidate resources.
  • the candidate resources include at least one frequency domain unit corresponding to the first time unit.
  • the first time unit is one of multiple time units within the resource selection window.
  • the candidate resources include consecutive L subCH subchannels under one time slot.
  • the first candidate resource set includes at least one first candidate resource.
  • the first candidate resource is a candidate resource within the resource selection window within the activation time of the second terminal.
  • the second terminal is a terminal communicatively connected with the first terminal. After the first terminal determines available resources for sending data to the second terminal, the first terminal may send data to the second terminal through the available resources. Taking the communication system 30 shown in FIG. 3 as an example, if the first terminal is the terminal 301 , the second terminal may be the terminal 302 or the terminal 303 .
  • the activation time of the second terminal is the activation time of the receiving terminal indicated when the MAC layer triggers the physical layer to perform resource selection.
  • the activation time of the second terminal is the activation time indicated when the MAC layer triggers the physical layer to select resources, that is, the activation time of the second terminal may be replaced by the activation time indicated by the MAC layer.
  • the number of the second terminal may be one or more, and in this case, the activation time of the second terminal is a union of the activation times of the one or more terminals.
  • the first candidate resource is a candidate resource within the resource selection window within the activation time of the second terminal, which can be understood as the first candidate resource is a candidate resource within the resource selection window, and the first candidate resource and The activation time of the second terminal overlaps in the time domain, for example, part or all of the time units included in the first candidate resource are within the activation time of the second terminal.
  • the first candidate resource set further includes a second candidate resource.
  • the second candidate resource is a candidate resource within the resource selection window within the inactive time of the second terminal. That is to say, the second candidate resource is a candidate resource within the resource selection window, and the second candidate resource overlaps with the inactivation time of the second terminal in the time domain, for example, part or all of the time units included in the second candidate resource During the inactive time of the second terminal.
  • the time domain start position of the resource selection window is n+T 1
  • the time domain end position of the resource selection window is n+T 2
  • the time domain start position of the resource selection window is n+T T 3
  • the time domain end position of the resource selection window is n+T 2 .
  • T 1 and T 2 are positive integers, or the introduction of T 1 and T 2 can refer to the above S1, and will not be repeated here.
  • T 3 is the start position in the time domain of the activation time of the second terminal after n+T 1 .
  • the first set of candidate resources may include all candidate resources in the resource selection window and exclude the resource selection window, and the second The candidate resource after the candidate resource before the starting position of the activation time of the terminal. That is, the resource selection window is [n+T 1 , n+T 2 ], but when performing resource exclusion, the first candidate resource set is a candidate single time unit resource within [n+T 3 , n+T 2 ]. The candidate single time resources in [n+T 1 , n+T 3 ] are not in the first set of candidate resources.
  • the first set of candidate resources may also be understood as a set of candidate resources in Y candidate time slots within [n+T 1 , n+T 2 ].
  • the Y candidate time slots are Y time units within the resource selection window.
  • the Y time slots may be continuous time slots or discrete time slots.
  • the physical layer of the first terminal determines Y candidate time slots, it determines that the activation time of the Y candidate time slots and the second terminal overlaps.
  • the physical layer of the first terminal determines Y candidate time slots, it determines that the Y candidate time slots and the activation time overlap ratio of the second terminal are greater than K%*the number of candidate resources in the first time window ( [start position of activation time in Y candidate slots, end position of Y candidate slots] or [Y candidate slots] or [start position of activation time in Y candidate slots, Y candidate time End position of the activation time in the slot]).
  • the time unit of awareness includes at least one of period-based partial awareness and continuous partial awareness.
  • the time unit of Periodic Based Partial Sensing (Periodic Based Partial Sensing) is determined according to Y candidate time slots and the resource reservation period configured in the resource pool.
  • CPS is [n+Ta, n+Tb] determined as a reference point when n is the trigger resource selection, where the values of Ta and Tb can be positive, negative, or 0, which is not limited in this application.
  • the perceived time unit at this time may be equivalent to the resource awareness window in this application.
  • the first terminal may determine the first candidate resource set in the following two exemplary manners.
  • the first terminal may determine the first candidate resource set in the manner shown in S1-S5 above. That is, the first candidate resource set is a set of candidate single time unit resources within the resource selection window. The difference is that the meaning of the resource selection window in S501 is different from the meaning of the resource selection window in S1.
  • the way to determine the first candidate resource set is the same as the way to determine the candidate resource set A in S5.
  • the resource selection window in S501 is different from the resource selection in S1 in that the resource selection window in S501 satisfies the following restriction: in the resource selection window, the resources in the time domain are within the activation time of the second terminal , that is, the resource selection window overlaps with the activation time of the second terminal in the time domain.
  • the time-domain starting position of the resource selection window in S501 may be n+T 1 or n+T 3 .
  • the physical layer of the first terminal determines the resource selection window, it determines that [n+T 1 , n+T 2 ] and the activation time of the second terminal overlap.
  • the physical layer of the first terminal determines the resource selection window, it is determined that [n+T 1 , n+T 2 ] and the activation time overlap ratio of the second terminal is greater than K%*in the first time window
  • the number of candidate resources is [n+T 3 , n+T 2 ] or [n+T 1 , n+T 2 ] or [n+T 3 , n+T 4 ]).
  • n+T 3 and n+T 4 are the start position and end position of the activation time of the second terminal located in [n+T 1 , n+T 2 ], respectively.
  • the first terminal may determine the first candidate resource set through the ways shown in S1-S7 above. The difference is that the meaning of the resource selection window in S501 is different from the meaning of the resource selection window in S1. For details, reference may be made to the above-mentioned method 1. In this case, the manner of determining the first candidate resource set is the same as that of the candidate resource set C in S7. Alternatively, the first terminal may determine the first candidate resource set by using the method for determining the third candidate resource set in mode 1 in S501-S503. That is to say, mode 1 and mode 2 in the method shown in FIG. 5 can be used in series.
  • the third candidate resource set is determined, and then the candidate resources satisfying the fourth condition in the third candidate resource set are excluded to determine the fourth candidate resource set.
  • the candidate resource set if the quantity of the first candidate resource is less than or equal to the second threshold, the first terminal determines the fifth candidate resource set.
  • the fourth condition includes overlapping with the resource indicated by the second SCI, and the corresponding measured value of RSRP is greater than or equal to the first critical value.
  • the second SCI is the SCI received by the first terminal within the resource awareness window. It can be understood that the first terminal excludes the candidate resources satisfying the fourth condition in the third candidate resource set, and determines the fourth candidate resource set, if in the fourth candidate resource set, the number of the first candidate resources is less than or equal to the second threshold , then the process for the first terminal to determine the fifth candidate resource set can refer to the method 2 in S502-S503. In this case, the third candidate resource determined by the first terminal through method 1 in S501-S503 The set is used as the first candidate resource set in S501, and S502-S503 is executed using mode 2).
  • the first terminal excludes candidate resources satisfying the first condition in the first set of candidate resources, and determines a second set of candidate resources.
  • the physical layer of the first terminal excludes candidate resources satisfying the first condition in the first candidate resource set, and determines the second candidate resource set.
  • the first condition includes overlapping with resources indicated by the first SCI.
  • the first SCI is assumed to be the SCI monitored by the first terminal in a time unit that is not monitored within the resource awareness window.
  • the frequency domain resources indicated by the first SCI are all frequency domain units in the resource pool, and the resource reservation period indicated by the first SCI is one of the resource reservation periods configured on the resource pool.
  • the first terminal excludes the candidate resources satisfying the first condition in the first candidate resource set, and the process of determining the second candidate resource set is similar to the above S6 process, so you can refer to the corresponding description in the above S6, here I won't go into details.
  • the first condition includes overlapping with the resource indicated by the second SCI, and the corresponding measured value of RSRP is greater than or equal to the first critical value.
  • the second SCI is the SCI received by the first terminal within the resource awareness window.
  • the first terminal excludes the candidate resources satisfying the first condition in the first candidate resource set, and the process of determining the second candidate resource set is similar to the above S8 process, so you can refer to the corresponding description in the above S8, here I won't go into details.
  • the first critical value may be equivalent to the critical value A in S8.
  • the physical layer of the first terminal sends the second candidate resource set to the MAC layer of the first terminal.
  • the physical layer of the first terminal sends information about the second candidate resource set to the MAC layer of the first terminal, so as to indicate the second candidate resource set to the MAC layer of the first terminal.
  • the physical layer of the first terminal determines the third candidate resource set.
  • the third set of candidate resources includes at least one first candidate resource among the candidate resources included in the second set of candidate resources and the excluded candidate resources.
  • the quantity of the first candidate resources included in the third candidate resource set is greater than or equal to the first threshold.
  • the excluded candidate resources are the candidate resources excluded by S502, that is, the candidate resources included in the first set of candidate resources but not included in the second set of candidate resources.
  • the activation time may be understood as the activation time of the second terminal indicated by the MAC, or the activation time indicated by the MAC layer.
  • the second terminal represents a receiving terminal, that is, a terminal that receives data sent by the first terminal.
  • the second set of candidate resources includes the activation time corresponding to the listening time unit
  • excluded candidate resources are candidate resources within the active time corresponding to the unmonitored time unit and candidate resources within the inactive time corresponding to the unmonitored time unit
  • the third set of candidate resources includes candidate resources within the activation time corresponding to the monitoring time unit, candidate resources within the inactive time corresponding to the monitoring time unit, and candidate resources within the activation time corresponding to the non-monitoring time unit all or part of the resources.
  • the first set of candidate resources including candidate resources within the activation time and candidate resources within the deactivation time as an example, if after S502, the second set of candidate resources includes the inactive resources corresponding to the listening time unit
  • the excluded candidate resources are the candidate resources within the activation time corresponding to the unmonitored time unit and the candidate resources within the inactive time corresponding to the unmonitored time unit
  • the third candidate resource set includes the monitored The candidate resources in the inactive time corresponding to the time unit, and all or part of the candidate resources in the active time corresponding to the unmonitored time unit.
  • the first set of candidate resources includes candidate resource 1 in the activation time, candidate resource 2 in the activation time, candidate resource 1 in the inactive time and candidate resource 2 in the inactive time as
  • the second set of candidate resources includes candidate resource 1 in the activation time and candidate resource 1 in the deactivation time
  • the excluded candidate resources are candidate resource 2 in the activation time and candidate resource 1 in the deactivation time 2.
  • the third candidate resource set includes all or part of the candidate resource 1 in the active time, the candidate resource 1 in the inactive time, and the candidate resource 2 in the active time.
  • the first set of candidate resources includes candidate resource 1 in the activation time, candidate resource 2 in the activation time, candidate resource 1 in the inactive time and candidate resource 2 in the inactive time as
  • the second set of candidate resources includes candidate resource 1 in the activation time
  • the excluded candidate resources are candidate resource 2 in the activation time, candidate resource 1 in the inactive time, and candidate resource in the inactive time 2.
  • the third candidate resource set includes candidate resource 1 within the activation time and all or part of the candidate resource 2 within the activation time.
  • the first threshold is the product of the first ratio and the number of candidate resources in the first time window.
  • the first ratio is greater than or equal to 0 and less than 1.
  • the first time window is a resource selection window; or, the start position of the time domain of the first time window is the start position of the activation time of the second terminal within the resource selection window, and the first time window
  • the end position of the time domain is the end position of the time domain of the resource selection window; or, the start position of the time domain of the first time window is the start position of the activation time of the second terminal within the resource selection window, and the time domain of the first time window
  • the domain end position is the time domain end position of the activation time of the second terminal within the resource selection window.
  • the first time window may be as shown in FIG. 6 .
  • the resource selection window is [n+T 1 , n+T 2 ]
  • n+T 3 is the starting position of the activation time of the second terminal in the resource selection window
  • n+T 4 is the resource selection window
  • the end position of the activation time of the second terminal within the first time window is [n+T 1 , n+T 2 ], or the first time window is [n+T 3 , n+T 2 ], or the first time window is [n+T 3 , n+T 2 ], or the first The time window is [n+T 3 , n+T 4 ].
  • the first terminal determines the third candidate resource set in different manners, which will be described in detail below.
  • determining the third candidate resource set by the first terminal includes: the first terminal excludes candidate resources satisfying the second condition in the first candidate resource set, and determines the third candidate resource.
  • the second condition includes being within the inactive time of the second terminal and overlapping with resources indicated by the first SCI. Compared with the first condition, the second condition increases the restriction within the inactive time of the second terminal.
  • the second condition can also be understood as the first condition that adds a limit within the inactive time of the second terminal.
  • the second condition is for the time unit that the first terminal does not monitor within the resource awareness window. It is assumed that the first terminal monitors the first SCI in the time unit that is not monitored, and the first candidate resource set If a candidate resource overlaps with the resource indicated by the first SCI, and the candidate resource is within the inactivation time of the second terminal, the candidate resource is excluded, that is, the candidate resource is not included in the third candidate resource set. That is to say, through the second condition, the first terminal can exclude candidate resources in the first set of candidate resources that are within the inactivation time of the second terminal and overlap with resources indicated by the first SCI.
  • the first terminal may add all first candidate resources among the excluded candidate resources to the second set of candidate resources to obtain a third set of candidate resources.
  • the fact that the candidate resource is within the inactive time of the second terminal may be understood as that part or all of the time units of the candidate resource are within the inactive time of the second terminal.
  • determining the third candidate resource set by the first terminal includes: determining the first candidate resource set by the first terminal, excluding candidate resources satisfying the second condition in the first candidate resource set, and determining the third candidate resource. That is to say, the first terminal may determine the first set of candidate resources again, and exclude candidate resources from the first set of candidate resources according to the second condition to obtain a third set of candidate resources.
  • the first terminal determining the third candidate resource set includes: the first terminal selecting at least one first candidate resource among the excluded candidate resources, and determining it as a candidate resource in the third candidate resource set. That is to say, the first terminal may determine part or all of the first candidate resources among the excluded candidate resources as candidate resources in the third candidate resource set.
  • the first terminal may determine part of the first candidate resources among the excluded candidate resources as candidate resources in the third candidate resource set. For example: at least one first candidate resource among the excluded candidate resources is randomly determined among the excluded first candidate resources. It can be understood that the randomly determined number of first candidate resources may make the number of first candidate resources in the third candidate resource set greater than or equal to the first threshold. It can be understood that randomly determining the first candidate resource among the excluded candidate resources can make the interference random, and the implementation is relatively simple.
  • the first terminal may determine part of the first candidate resources among the excluded candidate resources as candidate resources in the third candidate resource set. For example: at least one first candidate resource among the excluded candidate resources is the N first candidate resources at the top of the time domain among the excluded first candidate resources. Wherein, N is a positive integer. It can be understood that N may make the number of first candidate resources in the third candidate resource set greater than or equal to the first threshold.
  • the third candidate resource set may also include candidate resources in the second candidate resource set.
  • the first terminal may continue to exclude candidate resources from the third candidate resource set to determine a sixth candidate resource set.
  • the first terminal may determine the sixth candidate resource set in the manner shown in S7-S9 above.
  • the physical layer of the first terminal may send the sixth candidate resource set to the MAC layer of the first terminal.
  • the physical layer of the first terminal may send information about the sixth candidate resource set to the MAC layer of the first terminal, so as to indicate the sixth candidate resource set to the MAC layer of the first terminal.
  • the MAC layer of the first terminal may select initial transmission resources in the sixth candidate resource set, or may select initial transmission resources and retransmission resources in the sixth candidate resource set.
  • determining the third candidate resource set by the first terminal includes: the first terminal excludes candidate resources satisfying the third condition in the first candidate resource set, and determines the third candidate resource.
  • the third condition includes being within the activation time of the second terminal, overlapping with the resource indicated by the second SCI, and the corresponding RSRP measurement value is greater than or equal to the second critical value, and being within the non-activation time of the second terminal , overlaps with the resource indicated by the second SCI, and the corresponding RSRP measurement value is greater than or equal to the first critical value.
  • X is a positive integer, such as X can be 1, 3, 4, 5, 6 and so on. That is to say, the first terminal may increase the RSRP threshold corresponding to the candidate resources within the activation time of the second terminal from the first critical value to the second critical value, and then exclude the candidate resources from the first candidate resource set again. That is to say, the first terminal may increase the RSRP threshold corresponding to the candidate resources within the activation time of the second terminal by 3dB and exclude candidate resources from the first candidate resource set again.
  • the RSRP threshold corresponding to the candidate resource can be understood as the RSRP threshold corresponding to the resource indicated by the SCI overlapping the candidate resource, which is determined according to the priority in the SCI and the resource selection priority
  • the explanation of the RSRP threshold corresponding to the candidate resources here can be applied to all the embodiments provided in this application, and a unified description is made here, and will not be repeated hereafter.
  • the third condition is for the terminal to monitor the second SCI within the resource awareness window, if a candidate resource in the first set of candidate resources is within the activation time of the second terminal, and the candidate resource and The resources indicated by the second SCI overlap, and the measured value of the RSRP corresponding to the candidate resource is greater than or equal to the second critical value (the RSRP threshold corresponding to the candidate resource in the first candidate resource set within the activation time of the second terminal occurs change), the candidate resource is excluded, that is, the candidate resource is not included in the third candidate resource set; if a candidate resource in the first candidate resource set is within the inactive time of the second terminal, and the candidate resource There is overlap with the resource indicated by the second SCI, and the measured value of the RSRP corresponding to the candidate resource is greater than or equal to the first critical value (the RSRP corresponding to the candidate resource within the inactive time of the second terminal in the first candidate resource set is not change), the candidate resource is excluded, that is, the candidate resource is not included in the third candidate resource
  • the first terminal may increase the RSRP threshold corresponding to the candidate resource within the activation time of the second terminal by 3dB, but keep the RSRP threshold corresponding to the candidate resource within the inactivation time of the second terminal unchanged, and re- Candidate resources are excluded from the first set of candidate resources. It can also be understood that the first terminal only increases the RSRP threshold corresponding to the candidate resources within the activation time of the second terminal by 3 dB, and excludes candidate resources from the first candidate resource set again.
  • the third condition can be simplified as : It is within the activation time of the second terminal, overlaps with the resources indicated by the second SCI, and the corresponding RSRP measurement value is greater than or equal to the second critical value.
  • the first terminal determining the third candidate resource set includes: the first terminal determining the first candidate resource set, excluding candidate resources satisfying the third condition in the first candidate resource set, and determining the third candidate resource set . That is to say, the first terminal may (re)determine the first set of candidate resources again, and exclude candidate resources from the first set of candidate resources according to the third condition, to obtain a third set of candidate resources.
  • the first terminal may execute S503 again.
  • the difference is that when the first terminal executes S503 again, it may increase the The value of the second critical value (the second critical value plus XdB, where X is a positive integer) enables the third candidate resource set to include more first candidate resources.
  • the first terminal determining the third candidate resource set includes: the first terminal selecting at least one first candidate resource among the excluded candidate resources, and determining it as a candidate resource in the third candidate resource set. That is to say, the first terminal may determine part or all of the first candidate resources among the excluded candidate resources as candidate resources in the third candidate resource set.
  • the first terminal may determine part of the first candidate resources among the excluded candidate resources as candidate resources in the third candidate resource set. As an example, the first terminal selects M first candidate resources from the excluded first candidate resources in descending order of RSRP measurement values, and determines the M first candidate resources as the third candidate resource set.
  • M is a positive integer. It can be understood that M may make the number of first candidate resources included in the third candidate resource set greater than or equal to the first threshold. It can be understood that selecting the first candidate resource in descending order of the RSRP measurement value can make the candidate resource with low interference preferentially selected. Since data transmission using low-interference resources has a higher success rate than using high-interference resources, selecting the first candidate resource in descending order of RSRP measurement values can improve data transmission reliability.
  • the third candidate resource set may also include candidate resources in the second candidate resource set. This is because the essence of the process of determining the third candidate resource set is to add the first candidate resource among the excluded candidate resources on the basis of the candidate resources in the second candidate resource set.
  • the first terminal determines the candidate resources in the third candidate resource set according to the RSRP measurement value corresponding to the first candidate resource.
  • the first candidate resource in the third candidate resource set is the first candidate resource with a relatively low RSRP measurement value in the first candidate resource set, so as to avoid the available resources for sending data to the second terminal determined by the first terminal. Resource interference is high.
  • the physical layer of the first terminal sends the third candidate resource set to the MAC layer of the first terminal.
  • the physical layer of the first terminal sends information about the third candidate resource set to the MAC layer of the first terminal, so as to indicate the third candidate resource set to the MAC layer of the first terminal.
  • the MAC layer of the first terminal may select initial transmission resources in the third candidate resource set, or may select initial transmission resources and retransmission resources in the third candidate resource set.
  • the first terminal may determine the first set of candidate resources, and exclude candidate resources from the first set of candidate resources according to the first condition to obtain a second set of candidate resources.
  • a third set of candidate resources may be determined so that in the third set of candidate resources, the number of first candidate resources is greater than or equal to first threshold.
  • the set of candidate resources determined by the first terminal may include candidate resources within the activation time of the second terminal, so that the second terminal can receive the data sent by the first terminal.
  • the first terminal determines the first candidate resource among the excluded candidate resources as a candidate resource in the third candidate resource set, but does not determine the first candidate resource among the excluded candidate resources
  • the second candidate resource is determined as a candidate resource in the third candidate resource set.
  • unnecessary candidate resources can be avoided from being included in the third set of candidate resources; on the other hand, the excluded candidate resources Reliability cannot be guaranteed, therefore, not determining the second candidate resource among the excluded candidate resources as a candidate resource in the third candidate resource set can reduce the probability of resource conflict among the candidate resources in the third candidate resource set, and improve Reliability of data transmitted on candidate resources in the third set of candidate resources.
  • the first terminal may also obtain the activation time of the second terminal, so that the first terminal determines the third candidate resource set according to the activation time of the second terminal . That is to say, the method shown in FIG. 5 may further include S504.
  • S504 The first terminal acquires the activation time of the second terminal.
  • acquiring the activation time of the second terminal by the first terminal includes: acquiring first indication information by the first terminal, and determining the activation time of the second terminal according to the first indication information.
  • the MAC layer of the first terminal sends first indication information to the physical layer of the first terminal, and after receiving the first indication information, the physical layer of the first terminal determines the activation time of the second terminal according to the first indication information.
  • the first indication information is used to indicate the time domain position of the activation time of the second terminal.
  • the first indication information includes time-domain starting positions of at least one group of activation times of the second terminals and lengths of the activation times of the second terminals. In this way, the first terminal can determine the end position of the second terminal's activation time in the time domain according to the time domain start position of the second terminal's activation time and the length of the second terminal's activation time, thereby determining the second terminal's activation time The time domain position (time domain extent) of .
  • the first indication information includes the time domain start position and the time domain end position of the activation time of at least one group of second terminals. In this way, the first terminal may determine the time domain position of the activation time of the second terminal according to the time domain start position and the time domain end position of the activation time of the second terminal.
  • the activation time of the second terminal may be discrete, so there may be multiple sets of activation times of the second terminal indicated by the first indication information.
  • the first indication information may indicate the activation time of three groups of second terminals. Wherein, the start time slot of the activation time of the first group of second terminals is n+3, and the length is 1 time slot, and the start time slot of the activation time of the second group of second terminals is n+5, and the length is 1 time slots, the start time slot of the activation time of the third group of second terminals is n+7, and the length is 2 time slots.
  • the first indication information includes m bits (a bitmap bitmap with a length of m).
  • the m bits correspond to m time units, and the value of each bit is used to indicate whether the time unit corresponding to the bit is within the activation time of the second terminal. That is to say, whether each time unit in a period of continuous time units is within the activation time of the second terminal may be indicated through a bitmap.
  • the start position of the continuous time unit may be n
  • the end position may be n+remaining PDB (remaining packet delay budget, Remaining PDB).
  • the remaining PDB is the remaining PDB indicated when the MAC layer triggers the physical layer to perform resource selection.
  • the first indication information may include "000101011".
  • the first indication information indicates whether each time slot in time slot n to time slot n+8 is within the activation time of the second terminal.
  • time slot n to time slot n+2 are within the inactive time of the second terminal
  • time slot n+3 is within the active time of the second terminal
  • time slot n+4 is within the inactive time of the second terminal
  • the time slot n+5 is within the active time of the second terminal
  • the time slot n+6 is within the inactive time of the second terminal
  • the time slots n+7 to n+8 are within the active time of the second terminal.
  • a period can be configured for the bitmap, so that the first terminal can determine whether each time unit in multiple consecutive time units is within the activation time of the second terminal.
  • a possible implementation (implementation of the MAC layer), if the first indication information includes m bits, within the first time unit, the symbol where the activation time of the second terminal is located does not completely overlap with the symbol where the PSCCH is located (PSCCH not within the activation time of the second terminal), then the first time unit is within the non-activation time of the second terminal.
  • the first time unit is any one of the m time units.
  • the time unit within the activation time of the second terminal can be understood as: the time unit and The activation time of the second terminal completely overlaps, or at least the symbol where the PSCCH is located in the time unit and the activation time of the second terminal completely overlap.
  • the fact that the time unit is within the inactive time of the second terminal can be understood as: the time unit does not overlap with the activation time of the second terminal at all, or the time unit does not completely overlap with the activation time of the second terminal, or at least the time unit in the time unit
  • the symbol where the PSCCH is located does not completely overlap with the activation time of the second terminal.
  • the terminal needs to receive the PSCCH if it wants to receive data, and if the PSCCH cannot be received, the terminal cannot decode the PSSCH. Therefore, assuming that the symbol of the PSCCH in a candidate resource (candidate single time slot resource) is not within the activation time of the terminal, the terminal cannot successfully receive data. Therefore, the time slot where the candidate resource is located must at least ensure that the symbol where the PSCCH is located is within the activation time of the terminal.
  • the symbol of the PSCCH is symbol 0-symbol 2 in slot 0, and the symbol of the activation time of the second terminal is slot 0.
  • Symbol 0-symbol 6 the symbol where the PSCCH is located completely overlaps with the activation time of the second terminal, so slot 0 is located within the activation time of the second terminal.
  • the symbols where the PSCCH is located are symbols 0-symbol 2 in slot 1
  • the symbols where the activation time of the second terminal is located are symbols 6-symbol 13 in slot 1
  • the symbols where the PSCCH is located The symbols do not overlap at all with the activation time of the second terminal, so slot 1 is within the inactive time of the second terminal.
  • the MAC layer may indicate to the updated second terminal at the PHY layer (physical layer)
  • the PHY layer uses the updated activation time of the second terminal to perform a resource selection (reselection) process, or to perform a pre-emption or re-evaluation (re-evaluation) process.
  • the resource selection (reselection) process is performed at the activation time of the second terminal, or the pre-emption or re-evaluation process is performed, the latest indicated activation of the second terminal is used. Time (or the latest indicated activation time, or the latest indicated activation time of the receiving terminal).
  • the MAC layer may indicate to the PHY layer the updated activation time of the second terminal, At this time, the PHY layer is triggered to perform resource reselection.
  • the first terminal can also decide how to obtain the activation time of the second terminal, that is to say, the method for the first terminal to obtain the activation time of the second terminal can be based on the internal implementation of the first terminal .
  • the actions of the first terminal in the above S501-S504 can be executed by the processor 401 in the communication device 40 shown in FIG. 4 calling the application program code stored in the memory 403, which is not limited in this embodiment .
  • the first terminal may first determine the first candidate resource set, exclude the candidate resources satisfying the first condition in the first candidate resource set, determine the second candidate resource set, and determine the second candidate resource set.
  • determine a third set of candidate resources such that the number of first candidate resources in the third set of candidate resources is greater than or equal to the first threshold.
  • another method for determining a candidate resource set provided by the embodiment of the present application includes S901-S902.
  • the first terminal excludes candidate resources satisfying a first preset condition in the first set of candidate resources, and determines a second set of candidate resources.
  • the physical layer of the first terminal excludes candidate resources satisfying the first preset condition in the first candidate resource set, and determines the second candidate resource set.
  • the first terminal may be any terminal in the communication system 30 shown in FIG. 3 .
  • the first terminal may be terminal 301 , terminal 302 or terminal 303 .
  • the first set of candidate resources is a set of candidate resources within the resource selection window.
  • the first terminal may select resources in the resource selection window for transmitting the PSCCH and/or PSSCH. Since the resources in the resource selection window may be used for transmission of the PSCCH and/or PSSCH, the resources in the resource selection window may be called candidate resources.
  • the candidate resources include at least one frequency domain unit corresponding to the first time unit.
  • the first time unit is one of multiple time units within the resource selection window.
  • the candidate resources include consecutive L subCH subchannels under one time slot.
  • the first candidate resource set includes at least one first candidate resource.
  • the first candidate resource is a candidate resource within the resource selection window within the activation time of the second terminal.
  • the second terminal is a terminal communicatively connected with the first terminal. After the first terminal determines available resources for sending data to the second terminal, the first terminal may send data to the second terminal through the available resources. Taking the communication system 30 shown in FIG. 3 as an example, if the first terminal is the terminal 301 , the second terminal may be the terminal 302 or the terminal 303 .
  • the activation time of the second terminal is the activation time of the receiving terminal indicated when the MAC layer triggers the physical layer to perform resource selection.
  • the activation time of the second terminal is the activation time indicated when the MAC layer triggers the physical layer to select resources, that is, the activation time of the second terminal can be replaced by the activation time indicated by the MAC layer.
  • the number of the second terminal may be one or more, and in this case, the activation time of the second terminal is a union of the activation times of the one or more terminals.
  • the first candidate resource is a candidate resource within the resource selection window within the activation time of the second terminal, which can be understood as the first candidate resource is a candidate resource within the resource selection window, and the first candidate resource and The activation time of the second terminal overlaps in the time domain, for example, part or all of the time units included in the first candidate resource are within the activation time of the second terminal.
  • at least the symbol of the PSCCH in the first candidate resource is within the activation time of the second terminal.
  • the first set of candidate resources may also be understood as a set of candidate resources in Y candidate time slots within [n+T 1 , n+T 2 ].
  • the Y candidate time slots are Y time units within the resource selection window.
  • the Y time slots may be continuous time slots or discrete time slots.
  • the physical layer of the first terminal determines Y candidate time slots, it determines that the activation time of the Y candidate time slots and the second terminal overlaps.
  • the physical layer of the first terminal determines Y candidate time slots, it determines that the Y candidate time slots and the activation time overlap ratio of the second terminal are greater than K%*the number of candidate resources in the first time window ( [start position of activation time in Y candidate slots, end position of Y candidate slots] or [Y candidate slots] or [start position of activation time in Y candidate slots, Y candidate time End position of the activation time in the slot]).
  • the time unit of awareness includes at least one of period-based partial awareness and continuous partial awareness.
  • the time unit of Periodic Based Partial Sensing (Periodic Based Partial Sensing) is determined according to Y candidate time slots and the resource reservation period configured in the resource pool.
  • CPS is [n+Ta, n+Tb] determined as a reference point when n is the trigger resource selection, where the values of Ta and Tb can be positive, negative, or 0, which is not limited in the present invention.
  • the perceived time unit at this time may be equivalent to the resource awareness window in the present invention.
  • the first candidate resource set further includes a second candidate resource.
  • the second candidate resource is a candidate resource within the resource selection window within the inactive time of the second terminal. That is to say, the second candidate resource is a candidate resource within the resource selection window, and the second candidate resource overlaps with the inactivation time of the second terminal in the time domain, for example, part or all of the time included in the second candidate resource
  • the unit is located during the inactive time of the second terminal. For another example, at least the symbol of the PSCCH in the first candidate resource is not within the activation time of the second terminal.
  • the first preset condition includes overlapping with resources indicated by the second SCI, and a corresponding RSRP measurement value is greater than or equal to a first critical value.
  • the second SCI is the SCI received by the first terminal within the resource awareness window.
  • the first terminal excludes candidate resources that meet the first preset condition in the first set of candidate resources, and the process of determining the second set of candidate resources is similar to the process of S8 above, so you can refer to the corresponding description in S8 above , which will not be described here.
  • the first critical value may be equivalent to the critical value A in S8.
  • the first terminal determines a first candidate resource set.
  • the first terminal may determine the first candidate resource set in the manner shown in S1-S5 above. The difference is that the meaning of the resource selection window in S901 is different from the meaning of the resource selection window in S1.
  • the manner of determining the first candidate resource set is the same as that of the candidate resource set A in S5.
  • the first terminal may determine the first candidate resource set by using the method of determining the third candidate resource set in the above S501-S503 using mode 1.
  • the first terminal determines a third candidate resource set according to the quantity of candidate resources in the second candidate resource set and the quantity of first candidate resources in the second candidate resource set.
  • the physical layer of the first terminal determines the third candidate resource set according to the quantity of the candidate resources in the second candidate resource set and the quantity of the first candidate resources in the second candidate resource set.
  • the third candidate resource set includes at least one first candidate resource, and the number of candidate resources in the third candidate resource set is greater than or equal to the first threshold.
  • Case 1 Candidate resources in the second set of candidate resources The number of is greater than or equal to the first threshold, and the number of first candidate resources in the second set of candidate resources is greater than or equal to the second threshold; case 2: the number of candidate resources in the second set of candidate resources is less than the first threshold, and The number of first candidate resources in the second set of candidate resources is less than the second threshold; case 3: the number of candidate resources in the second set of candidate resources is less than the first threshold, and the number of first candidate resources in the second set of candidate resources The number is greater than or equal to the second threshold; case 4: the number of candidate resources in the second set of candidate resources is greater than or equal to the first threshold, and the number of first candidate resources in the second set of candidate resources is less than the second threshold.
  • a possible implementation manner is that the first threshold is the product of the first ratio and the number of candidate resources in the resource selection window, and the second threshold is the product of the second ratio and the number of first candidate resources in the first time window .
  • the first ratio and the second ratio may be independently configured, that is, respectively configured by the network device or pre-configured on the resource pool.
  • the second ratio and the first ratio are configured independently, and the second ratio is not greater than the first ratio.
  • the first ratio and the second ratio may also be the same.
  • the second threshold is 0, that is, the second ratio is 0.
  • Case 1 the number of candidate resources in the second set of candidate resources is greater than or equal to the first threshold, and the number of first candidate resources in the second set of candidate resources is greater than or equal to the second threshold.
  • the third candidate resource set is the second candidate resource set.
  • S902 may not be performed, and after the physical layer of the first terminal determines the second candidate resource set, it may send the second candidate resource set to the MAC layer of the second terminal, or in other words, may send the second candidate resource set to the second terminal
  • the MAC layer of the first terminal sends information about the second candidate resource set, so as to indicate the second candidate resource set to the MAC layer of the first terminal.
  • Case 2 the number of candidate resources in the second set of candidate resources is less than the first threshold, and the number of first candidate resources in the second set of candidate resources is less than the second threshold.
  • determining the third set of candidate resources by the first terminal includes: selecting at least one first candidate resource among the excluded candidate resources by the first terminal, and determining it as a candidate resource in the third set of candidate resources . That is to say, the first terminal may determine part or all of the first candidate resources among the excluded candidate resources as candidate resources in the third candidate resource set.
  • At least one first candidate resource among the excluded candidate resources is randomly determined among the excluded first candidate resources. It can be understood that the randomly determined number of first candidate resources may make the number of candidate resources in the third set of candidate resources greater than or equal to the first threshold, and make the number of first candidate resources in the third set of candidate resources greater than or equal to second threshold. It can be understood that randomly determining the first candidate resource among the excluded candidate resources can make the interference random, and the implementation is relatively simple.
  • the excluded first candidate resources are determined as the candidate resources in the third candidate resource set from the M first candidate resources selected in descending order of the RSRP measurement value from the excluded first candidate resources.
  • M is a positive integer. It can be understood that M may make the number of candidate resources in the third candidate resource set greater than or equal to the first threshold, and make the number of first candidate resources in the third candidate resource set greater than or equal to the second threshold. It can be understood that selecting the first candidate resource in descending order of the RSRP measurement value can make the candidate resource with low interference preferentially selected. Since data transmission using low-interference resources has a higher success rate than using high-interference resources, selecting the first candidate resource in descending order of RSRP measurement values can improve data transmission reliability.
  • the third candidate resource set may also include candidate resources in the second candidate resource set.
  • the determining the third candidate resource set by the first terminal includes: the first terminal excludes candidate resources satisfying the second preset condition in the first candidate resource set, and determines the third candidate resource set.
  • the second preset condition includes being located within the activation time of the second terminal, overlapping with resources indicated by the second SCI, and the corresponding RSRP measurement value is greater than or equal to the second critical value, and being located within the inactive state of the second terminal. Within the time period, there is overlap with the resource indicated by the second SCI, and the corresponding measured value of RSRP is greater than or equal to the first critical value.
  • the second critical value is greater than the first critical value.
  • the second critical value the first critical value+XdB.
  • X is a positive integer, such as X can be 1, 3, 4, 5, 6 and so on.
  • the first terminal may increase the RSRP threshold corresponding to the resource within the activation time of the second terminal from the first critical value to the second critical value (the RSRP threshold corresponding to the resource within the inactivation time of the second terminal may remain unchanged), and then exclude candidate resources from the first set of candidate resources again.
  • the second preset condition is that on the basis of the first preset condition, the RSRP threshold corresponding to the candidate resource within the activation time of the second terminal is increased by XdB, and the RSRP threshold corresponding to the candidate resource within the inactivation time of the second terminal is increased by XdB.
  • the RSRP threshold corresponding to the candidate resources remains unchanged, and the candidate resources are excluded from the first candidate resource set again.
  • the second preset condition may be The simplification is: within the activation time of the second terminal, there is overlap with the resource indicated by the second SCI, and the corresponding RSRP measurement value is greater than or equal to the second critical value.
  • the first terminal excludes the candidate resources satisfying the second preset condition in the first set of candidate resources, and after determining the third set of candidate resources, there may be the following situations: the candidate resources in the third set of candidate resources The number of is greater than or equal to the first threshold, but the number of the first candidate resources in the second candidate resource set is smaller than the second threshold. In this case, the first terminal may determine that the current set of candidate resources is the third set of candidate resources. At this time, the third candidate resource set includes the first candidate resource, but the number of the first candidate resource is not necessarily greater than or equal to the second threshold.
  • the MAC layer can already select the resource at the activation time of the second terminal, which ensures that the second terminal can receive the data sent by the first terminal.
  • the first terminal may continue to increase the RSRP threshold corresponding to the candidate resources within the activation time of the second terminal to exclude candidate resources from the first candidate resource set again.
  • the number of candidate resources in the third set of candidate resources is greater than or equal to a first threshold, and the number of first candidate resources in the second set of candidate resources is greater than or equal to a second threshold.
  • the determining the third candidate resource set by the first terminal includes: the first terminal excludes candidate resources satisfying the second preset condition in the first candidate resource set, and determines the third candidate resource set.
  • the first terminal first satisfies the restriction that the number of candidate resources in the second candidate resource set is greater than the first threshold, and then satisfies the restriction that the number of first candidate resources in the second candidate resource set is greater than the second threshold.
  • the first terminal raises the RSRP threshold (including the RSRP threshold corresponding to the candidate resource within the activation time of the second terminal and the RSRP threshold corresponding to the candidate resource within the inactivation time of the second terminal) to re-apply in the first candidate resource set Exclude candidate resources (refer to S6 for this process).
  • the first terminal continues to exclude candidates that meet the second preset condition resources, to determine a third candidate resource set.
  • the second preset condition includes being located within the activation time of the second terminal, overlapping with resources indicated by the second SCI, and the corresponding RSRP measurement value is greater than or equal to the second critical value, and being located within the inactive state of the second terminal. Within the time period, there is overlap with the resource indicated by the second SCI, and the corresponding measured value of RSRP is greater than or equal to the first critical value.
  • the second critical value is greater than the first critical value.
  • the second critical value the first critical value+XdB.
  • X is a positive integer, such as X can be 1, 3, 4, 5, 6 and so on.
  • the first terminal may increase the RSRP threshold corresponding to the resources within the activation time of the second terminal, and then exclude candidate resources from the first candidate resource set again.
  • the second preset condition is that on the basis of the first preset condition, the RSRP threshold corresponding to the candidate resource within the activation time of the second terminal is increased by XdB, and the RSRP threshold corresponding to the candidate resource within the inactivation time of the second terminal is increased by XdB.
  • the RSRP threshold corresponding to the candidate resources remains unchanged, and the candidate resources are excluded from the first candidate resource set again.
  • the determining the third candidate resource set by the first terminal includes: the first terminal excludes candidate resources satisfying the second preset condition in the first candidate resource set, and determines the third candidate resource set.
  • the first terminal first meets the restriction that the number of first candidate resources in the second candidate resource set is greater than the second threshold, and then meets the restriction that the number of candidate resources in the second candidate resource set is greater than the first threshold.
  • the specific implementation Proceed as follows:
  • Determining the third candidate resource set by the first terminal includes: the first terminal excludes candidate resources in the first candidate resource set that satisfy the second preset condition, and determines the third candidate resource set.
  • the second preset condition includes being located within the activation time of the second terminal, overlapping with resources indicated by the second SCI, and the corresponding RSRP measurement value is greater than or equal to the second critical value, and being located within the inactive state of the second terminal. Within the time period, there is overlap with the resource indicated by the second SCI, and the corresponding measured value of RSRP is greater than or equal to the first critical value.
  • the second critical value is greater than the first critical value.
  • the second critical value the first critical value+XdB.
  • X is a positive integer, such as X can be 1, 3, 4, 5, 6 and so on.
  • the first terminal may increase the RSRP threshold corresponding to the resource within the activation time of the second terminal from the first critical value to the second critical value (the RSRP threshold corresponding to the resource within the inactivation time of the second terminal may remain unchanged), and then exclude candidate resources from the first set of candidate resources again.
  • the second preset condition is that on the basis of the first preset condition, the RSRP threshold corresponding to the candidate resource within the activation time of the second terminal is increased by XdB, and the RSRP threshold corresponding to the candidate resource within the inactivation time of the second terminal is increased by XdB.
  • the RSRP threshold corresponding to the candidate resources remains unchanged, and the candidate resources are excluded from the first candidate resource set again.
  • the first terminal increases the RSRP threshold (including the RSRP threshold corresponding to the candidate resources within the activation time of the second terminal and the non- The RSRP threshold corresponding to the candidate resources within the activation time) excludes candidate resources from the first candidate resource set again (refer to S6 for this process), and at this time the number of candidate resources in the third candidate resource set is greater than the first threshold.
  • case 2 when case 2 is being executed, the number of candidate resources in the second candidate resource set in case 2 is less than the first threshold, and the number of first candidate resources in the second candidate resource set is less than the first threshold
  • Two thresholds first satisfying that the number of candidate resources in the second candidate resource set is greater than the first threshold, that is, the number of candidate resources in the second candidate resource set is greater than the first threshold, and the first candidate resource in the second candidate resource set If the number of resources is less than the second threshold, then case 2 becomes case 1.
  • case 2 becomes case 3.
  • Case 3 the number of candidate resources in the second set of candidate resources is less than the first threshold, and the number of first candidate resources in the second set of candidate resources is greater than or equal to the second threshold.
  • the determining the third candidate resource set by the first terminal includes: the first terminal excludes candidate resources satisfying a third preset condition in the first candidate resource set, and determines the third candidate resource set.
  • the third preset condition includes overlapping with the resource indicated by the second SCI, and the corresponding measured value of RSRP is greater than or equal to the third critical value.
  • the third critical value is greater than the first critical value.
  • the third critical value the first critical value+YdB.
  • Y is a positive integer, such as Y can be 1, 3, 4, 5, 6 and so on. That is to say, the first terminal may increase the RSRP threshold from the first critical value to the third critical value, and then exclude candidate resources from the first candidate resource set again.
  • Case 4 the number of candidate resources in the second set of candidate resources is greater than or equal to the first threshold, and the number of first candidate resources in the second set of candidate resources is smaller than the second threshold.
  • the determining the third candidate resource set by the first terminal includes: the first terminal excludes candidate resources satisfying a fourth preset condition in the first candidate resource set, and determines the third candidate resource set.
  • the fourth preset condition includes being within the inactive time of the second terminal, overlapping with resources indicated by the second SCI, and the corresponding RSRP measurement value is greater than or equal to the first critical value.
  • the first terminal may exclude the second candidate resource in the first candidate resource set without excluding the first candidate resource.
  • the fourth preset condition includes being within the activation time of the second terminal, and overlapping with resources indicated by the second SCI, and the corresponding RSRP measurement value is greater than or equal to the fourth critical value, And it is located within the inactive time of the second terminal, and overlaps with the resource indicated by the second SCI, and the corresponding RSRP measurement value is greater than or equal to the first critical value.
  • the fourth critical value is greater than the first critical value.
  • the fourth critical value the first critical value+ZdB.
  • Z is a positive integer, such as Z can be 1, 3, 4, 5, 6 and so on.
  • the first terminal may increase the RSRP threshold corresponding to the resource within the activation time of the second terminal from the first critical value to the fourth critical value (the RSRP threshold corresponding to the resource within the inactivation time of the second terminal may remain unchanged), and then exclude candidate resources from the first set of candidate resources again.
  • the first critical value is the critical value used in the last resource exclusion process.
  • the fourth threshold is the threshold used in the last resource exclusion process plus ZdB.
  • the second critical value, the third critical value and the fourth critical value may be the same or different.
  • the third preset condition may be The simplification is: within the activation time of the second terminal, there is overlap with the resource indicated by the second SCI, and the corresponding RSRP measurement value is greater than or equal to the second critical value.
  • the first terminal determining the third candidate resource set includes: the first terminal determining at least one first candidate resource in the first candidate resource set as a candidate resource in the third candidate resource set. Specifically, reference may be made to the corresponding description in the foregoing case 2.
  • the first terminal excludes candidate resources satisfying the first preset condition in the first set of candidate resources, and after determining the second set of candidate resources, it may base on the number of candidate resources in the second set of candidate resources, and The number of first candidate resources in the second set of candidate resources, determining a third set of candidate resources, so that the third set of candidate resources includes at least one first candidate resource, and the number of candidate resources in the third set of candidate resources is greater than or equal to the first threshold.
  • the actions of the first terminal in the above S901-S902 can be executed by the processor 401 in the communication device 40 shown in FIG. 4 calling the application program code stored in the memory 403, which is not limited in this embodiment .
  • the first terminal when excluding candidate resources, may not exclude candidate resources within the resource selection window within the activation time of the second terminal, so that the candidate resources finally determined by the first terminal
  • the resource set includes candidate resources within the activation time of the second terminal.
  • another method for determining a candidate resource set provided by the embodiment of the present application includes S1001-S1002.
  • the first terminal determines a first candidate resource set.
  • the physical layer of the first terminal determines the first candidate resource set.
  • the first terminal may be any terminal in the communication system 30 shown in FIG. 3 .
  • the first terminal may be terminal 301 , terminal 302 or terminal 303 .
  • the first set of candidate resources is a set of candidate resources within the resource selection window.
  • the first terminal may select resources in the resource selection window for transmitting the PSCCH and/or PSSCH. Since the resources in the resource selection window may be used for transmission of the PSCCH and/or PSSCH, the resources in the resource selection window may be called candidate resources.
  • the candidate resources include at least one frequency domain unit corresponding to the first time unit.
  • the first time unit is one of multiple time units in the resource selection window.
  • the candidate resources include consecutive L subCH subchannels under one time slot.
  • the first candidate resource set includes at least one first candidate resource.
  • the first candidate resource is a candidate resource within the resource selection window within the activation time of the second terminal.
  • the second terminal is a terminal communicatively connected with the first terminal. After the first terminal determines available resources for sending data to the second terminal, the first terminal may send data to the second terminal through the available resources. Taking the communication system 30 shown in FIG. 3 as an example, if the first terminal is the terminal 301 , the second terminal may be the terminal 302 or the terminal 303 .
  • the activation time of the second terminal is the activation time of the receiving terminal indicated when the MAC layer triggers the physical layer to perform resource selection.
  • the activation time of the second terminal is the activation time indicated when the MAC layer triggers the physical layer to select resources, that is, the activation time of the second terminal may be replaced by the activation time indicated by the MAC layer.
  • the number of the second terminal may be one or more, and in this case, the activation time of the second terminal is a union of the activation times of the one or more terminals.
  • the first candidate resource is a candidate resource within the resource selection window within the activation time of the second terminal, which can be understood as the first candidate resource is a candidate resource within the resource selection window, and the first candidate resource and The activation time of the second terminal overlaps in the time domain, for example, part or all of the time units included in the first candidate resource are within the activation time of the second terminal.
  • the first set of candidate resources may also be understood as a set of candidate resources in Y candidate time slots within [n+T 1 , n+T 2 ].
  • the Y candidate time slots are Y time units within the resource selection window.
  • the Y time slots may be continuous time slots or discrete time slots.
  • the physical layer of the first terminal determines Y candidate time slots, it determines that the activation time of the Y candidate time slots and the second terminal overlaps.
  • the physical layer of the first terminal determines Y candidate time slots, it determines that the Y candidate time slots and the activation time overlap ratio of the second terminal are greater than K%*the number of candidate resources in the first time window ( [start position of activation time in Y candidate slots, end position of Y candidate slots] or [Y candidate slots] or [start position of activation time in Y candidate slots, Y candidate time end position of the active time in the slot]).
  • the time unit of awareness includes at least one of period-based partial awareness and continuous partial awareness.
  • the time unit of Periodic Based Partial Sensing (Periodic Based Partial Sensing) is determined according to Y candidate time slots and the resource reservation period configured in the resource pool.
  • CPS is [n+Ta, n+Tb] determined as a reference point when n is the trigger resource selection, where the values of Ta and Tb can be positive, negative, or 0, which is not limited in the present invention.
  • the perceived time unit at this time may be equivalent to the resource awareness window in the present invention.
  • the first candidate resource set further includes a second candidate resource.
  • the second candidate resource is a candidate resource within the resource selection window within the inactive time of the second terminal. That is to say, the second candidate resource is a candidate resource within the resource selection window, and the second candidate resource overlaps with the inactivation time of the second terminal in the time domain, for example, part or all of the time included in the second candidate resource
  • the unit is located during the inactive time of the second terminal.
  • the first terminal determines the first candidate resource set in the manner shown in S1-S5 above.
  • the difference is that the meaning of the resource selection window in S1001 is different from the meaning of the resource selection window in S1.
  • the manner of determining the first candidate resource set is the same as that of the candidate resource set A in S5.
  • the first terminal excludes candidate resources satisfying the first condition in the first set of candidate resources, and determines a second set of candidate resources.
  • the first condition includes being located within the inactive time of the second terminal, and overlapping with the resources indicated by the first SCI; the first SCI is the SCI that is monitored by the first terminal assuming that the first terminal does not monitor within the resource awareness window .
  • the first SCI is the SCI that is monitored by the first terminal assuming that the first terminal does not monitor within the resource awareness window .
  • the first condition is for the time unit that the first terminal does not monitor within the resource awareness window. It is assumed that the first terminal monitors the first SCI in the time unit that is not monitored, and the first candidate resource set If a candidate resource overlaps with a resource indicated by the first SCI, and the candidate resource is within the inactivation time of the second terminal, the candidate resource is excluded, that is, the candidate resource is not included in the second candidate resource set. That is to say, based on the first condition, the first terminal can exclude candidate resources in the first set of candidate resources that are within the inactivation time of the second terminal and overlap with resources indicated by the first SCI.
  • the first terminal device excludes the candidate resources in the inactive time in the first candidate resource set, does not exclude the candidate resources in the active time in the first candidate resource set, and obtains the second candidate resource set .
  • the fact that the candidate resource is within the inactive time of the second terminal may be understood as that part or all of the time units of the candidate resource are within the inactive time of the second terminal.
  • the first terminal excludes candidate resources satisfying the second condition in the second set of candidate resources, and determines a third set of candidate resources.
  • the physical layer of the first terminal may send the third candidate resource set to the MAC layer of the first terminal.
  • the physical layer of the first terminal may send information about the third candidate resource set to the MAC layer of the first terminal, so as to indicate the third candidate resource set to the MAC layer of the first terminal.
  • the second condition includes being located within the inactive time of the second terminal, overlapping with resources indicated by the second SCI, and corresponding RSRP is greater than or equal to the first critical value.
  • the second SCI is the SCI received by the first terminal within the resource awareness window.
  • the second condition is for the terminal to monitor the second SCI within the resource awareness window, if a candidate resource in the second candidate resource set is within the inactivation time of the second terminal, and the candidate resource If there is overlap with the resource indicated by the second SCI, and the RSRP measurement value corresponding to the candidate resource is greater than or equal to the first critical value, then the candidate resource is excluded, that is, the candidate resource is not included in the third candidate resource set.
  • the first terminal may determine the fourth candidate resource set through the method shown in S7-S9 mentioned above. Subsequently, the physical layer of the first terminal may send the fourth candidate resource set to the MAC layer of the first terminal. In other words, the physical layer of the first terminal may send information about the fourth candidate resource set to the MAC layer of the first terminal, so as to indicate the fourth candidate resource set to the MAC layer of the first terminal.
  • the first terminal when the first terminal excludes candidate resources in the first set of candidate resources, it does not exclude candidate resources within the activation time of the second terminal.
  • the second candidate resource set can include candidate resources within the activation time of the second terminal, so that the second terminal can receive the data sent by the first terminal.
  • the actions of the first terminal in the above S1001-S1002 can be executed by the processor 401 in the communication device 40 shown in FIG. 4 calling the application program code stored in the memory 403, which is not limited in this embodiment .
  • the first terminal when it excludes candidate resources, it can independently determine a set of candidate resources for the candidate resources within the activation time of the second terminal within the resource selection window.
  • the candidate resources in the candidate resource set are excluded, so that a certain number of candidate resources are reserved in the candidate resource set.
  • the candidate resource set finally determined by the first terminal may include candidate resources within the activation time of the second terminal.
  • FIG. 11 reference may be made to the method shown in FIG. 11 below.
  • another method for determining a candidate resource set provided by the embodiment of the present application includes S1101 - S1103 .
  • the first terminal determines a first candidate resource set and a second candidate resource set.
  • the physical layer of the first terminal determines the first candidate resource set and the second candidate resource set.
  • the first terminal may be any terminal in the communication system 30 shown in FIG. 3 .
  • the first terminal may be terminal 301 , terminal 302 or terminal 303 .
  • the first set of candidate resources is a set of candidate resources within the activation time of the second terminal within the resource selection window. That is to say, the first terminal may independently determine a set of candidate resources for the candidate resources within the activation time of the second terminal within the resource selection window. The candidate resources in the first candidate resource set are all within the activation time of the second terminal within the resource selection window.
  • the candidate resources in the first candidate resource set may include at least one frequency domain unit corresponding to the first time unit.
  • the first time unit is one of multiple time units within the resource selection window within the activation time of the second terminal.
  • the candidate resources in the first candidate resource set include consecutive L subCH subchannels under one time slot, the one time slot is located in the resource selection window, and the one time slot is located within the activation time of the second terminal.
  • the second terminal is a terminal communicatively connected with the first terminal. After the first terminal determines available resources for sending data to the second terminal, the first terminal may send data to the second terminal through the available resources. Taking the communication system 30 shown in FIG. 3 as an example, if the first terminal is the terminal 301 , the second terminal may be the terminal 302 or the terminal 303 .
  • the activation time of the second terminal is the activation time of the receiving terminal indicated when the MAC layer triggers the physical layer to perform resource selection.
  • the activation time of the second terminal is the activation time indicated when the MAC layer triggers the physical layer to select resources, that is, the activation time of the second terminal may be replaced by the activation time indicated by the MAC layer.
  • the number of the second terminal may be one or more, and in this case, the activation time of the second terminal is a union of the activation times of the one or more terminals.
  • the second candidate resource set may have at least the following four designs:
  • the second set of candidate resources is a set of candidate resources within the resource selection window. That is to say, the candidate resources in the second set of candidate resources are located within the resource selection window.
  • the candidate resources in the second candidate resource set may include at least one frequency domain unit corresponding to the second time unit.
  • the second time unit is one of multiple time units within the resource selection window.
  • the candidate resources in the second candidate resource set include consecutive L subCH subchannels under one time slot, and the one time slot is located in the resource selection window.
  • the first terminal determines the second candidate resource set, which can make the candidate resource finally determined by the first terminal
  • the candidate resources in the set occupy a certain proportion of the candidate resources in the second candidate resource set, so that the MAC of the first terminal has room to select resources.
  • the second set of candidate resources is a set of candidate resources within the first time window.
  • the start position of the first time window is the start position of the activation time of the second terminal in the resource selection window
  • the end position of the first time window is the end position of the resource selection window. That is to say, the candidate resources in the second candidate resource set are located within the first time window.
  • the candidate resources in the second candidate resource set may include at least one frequency domain unit corresponding to the second time unit.
  • the second time unit is one of the multiple time units within the first time window.
  • the candidate resources in the second candidate resource set include consecutive L subCH subchannels under one time slot, and the one time slot is located within the first time window.
  • the second set of candidate resources is a set of candidate resources within the inactive time of the second terminal within the resource selection window. That is to say, the candidate resources in the second candidate resource set are located within the inactive time of the second terminal within the resource selection window.
  • the candidate resources in the second candidate resource set may include at least one frequency domain unit corresponding to the third time unit.
  • the third time unit is one of multiple time units within the resource selection window within the inactive time of the second terminal.
  • the candidate resources in the second candidate resource set include consecutive L subCH subchannels under one time slot, the one time slot is located in the resource selection window, and the one time slot is located within the inactive time of the second terminal.
  • the second set of candidate resources is a set of candidate resources within the inactive time of the second terminal within the first time window.
  • the candidate resources in the second candidate resource set are located within the inactive time of the second terminal within the first time window. That is to say, the candidate resources in the second candidate resource set are located within the resource selection window, within the inactivation time of the second terminal after the starting position of the activation time.
  • the candidate resources in the second candidate resource set may include at least one frequency domain unit corresponding to the fourth time unit.
  • the fourth time unit is one of multiple time units located within the inactivation time of the second terminal after the start position of the activation time of the second terminal within the first time window.
  • the candidate resources in the second candidate resource set include consecutive L subCH subchannels under one time slot, the one time slot is located in the first time window, and the one time slot is located in the inactive time of the second terminal.
  • the first terminal sends the initial transmission at the activation time of the second terminal, and sends the retransmission at the activation time or deactivation time of the second terminal, so the resource selection window before the start of the activation time of the second terminal Resources are unavailable for initial pass.
  • the retransmission resources are usually behind the initial transmission resources, so the resources before the starting position of the activation time of the second terminal within the resource selection window are also unusable for retransmission. Therefore, for Design 2 and Design 4, the candidate resources in the second set of candidate resources may not include the resources before the starting position of the activation time of the second terminal within the resource selection window, which may enable the first terminal to select among the available candidate resources.
  • the initial transmission resources and/or retransmission resources are determined in the resources.
  • Design 2 considers the first time window as a whole, and the criteria for the degree of interference of the candidate resources in the active time of the second terminal and the candidate resources in the inactive time of the second terminal are the same. From this point of view, Design 2 is superior to Design 4.
  • candidate resources in the first candidate resource set may be used by the first terminal to select resources for initial transmission.
  • candidate resources in the second candidate resource set may be used by the first terminal to select initial transmission resources and/or retransmission resources.
  • candidate resources in the second candidate resource set may be used by the first terminal to select retransmission resources.
  • the activation time includes the current activation time and the future activation time
  • the future activation time is determined according to the retransmission resource indicated by the initial transmission resource or according to the previous transmission resource indication
  • the resources for the next transmission are determined. Therefore, the activation time of the second terminal can also be understood as the current activation time of the second terminal. In this way, the first terminal can select the resource for initial transmission at the current activation time.
  • the first terminal determines the first candidate resource set and the second candidate resource set according to the activation time of the second terminal and the inactivation time of the second terminal. This is because, considering HARQ RTT and chain reservation (SCI indicates the resources to be used for the next transmission), the first terminal respectively determines the first candidate resource set and the second candidate resource set, which can make the first terminal finally determine In the set of candidate resources, the candidate resources located in the activation time of the second terminal and the candidate resources located in the inactivation time of the second terminal can all occupy a certain proportion, and determine the initial transmission resource and/or for the MAC layer of the first terminal Retransmission resources are optional.
  • the candidate resources in the candidate resource set finally determined by the first terminal may occupy a certain proportion in the sum of the candidate resources in the first candidate resource set and the candidate resources in the second candidate resource set, so that the first terminal's The MAC layer has room to select resources.
  • the resource awareness window corresponding to the first candidate resource set is the same as the resource awareness window corresponding to the resource selection window.
  • the resource awareness window corresponding to the second candidate resource set of the above three designs is the same as the resource awareness window corresponding to the resource selection window.
  • the first terminal selects a candidate resource from the first candidate resource set to obtain a third candidate resource set.
  • the physical layer of the first terminal selects candidate resources from the first candidate resource set to obtain a third candidate resource set.
  • the first terminal may determine the third candidate resource set by any one of the following two methods:
  • Method 1 The first terminal excludes candidate resources satisfying the first condition in the first candidate resource set, determines a fifth candidate resource set, excludes candidate resources satisfying the second condition in the fifth candidate resource set, and determines a third candidate resource set.
  • the first condition includes overlapping with resources indicated by the first SCI.
  • the first SCI is assumed to be the SCI monitored by the first terminal in a time unit that is not monitored within the resource awareness window.
  • the second condition includes overlapping with the resource indicated by the second SCI, and the corresponding RSRP measurement value is greater than or equal to the first critical value.
  • the second SCI is sidelink control information received by the first terminal within the resource awareness window.
  • the introduction of the first SCI please refer to the description of the first SCI in the above S6, for the introduction of the second SCI, please refer to the description of the second SCI in the above S8, for the introduction of the first critical value, please refer to the above introduction to the critical value A, I won't go into details here.
  • the first terminal excludes candidate resources satisfying the first condition in the first candidate resource set
  • determining the fifth candidate resource set includes: the first terminal excludes candidate resources satisfying the first condition in the first candidate resource set Candidate resources, determine the first intermediate set; if the number of candidate resources in the first intermediate set is less than the first threshold, the first terminal determines the first candidate resource set as the fifth candidate resource set, if the candidate resources in the first intermediate set The number of is greater than or equal to the first threshold, then the first terminal determines the first intermediate set as the fifth candidate resource set.
  • the first threshold is the product of the first ratio and the number of candidate resources in the first candidate resource set.
  • the first ratio is greater than or equal to 0 and less than 1.
  • the first terminal excludes candidate resources satisfying the second condition in the fifth candidate resource set
  • determining the third candidate resource set includes: the first terminal excludes candidate resources satisfying the second condition in the fifth candidate resource set determining the second intermediate set of candidate resources; if the number of candidate resources in the second intermediate set is less than the second threshold, the first terminal excludes candidate resources satisfying the third condition in the fifth set of candidate resources, and determines a third set of candidate resources, If the number of candidate resources in the second intermediate set is greater than or equal to the second threshold, the first terminal determines the second intermediate set as the third candidate resource set.
  • the third condition includes overlapping with the resource indicated by the second SCI, and the corresponding measured value of RSRP is greater than or equal to the second critical value.
  • the second critical value is greater than the first critical value.
  • the second critical value the first critical value+XdB.
  • X is a positive integer, such as X can be 1, 3, 4, 5, 6 and so on. That is, the first terminal excludes the candidate resources satisfying the second condition in the fifth candidate resource set, and determines the second intermediate set; if the number of candidate resources in the second intermediate set is less than the second threshold, the first terminal increases the RSRP threshold and re-selects the resource exclude.
  • the second threshold is the product of the second ratio and the number of candidate resources in the first set of candidate resources. The second ratio is greater than or equal to 0 and less than 1.
  • the first ratio and the second ratio may be configured independently.
  • the first ratio and the second ratio can be the same or different.
  • the first ratio is configured by a network device (such as a base station) through radio resource control (radio resource control, RRC) signaling.
  • the first ratio is based on resource pool configuration. Further, the first ratio may be one of 10%, 20%, 35%, and 50%.
  • the first ratio is greater than the second ratio.
  • Method 2 The first terminal excludes candidate resources satisfying the second condition in the first set of candidate resources, and determines a third set of candidate resources.
  • the second condition includes overlapping with the resource indicated by the second SCI, and the corresponding measured value of RSRP is greater than or equal to the first critical value.
  • the second SCI is sidelink control information received by the first terminal within the resource awareness window. That is to say, in method 2, the first terminal does not consider whether there is an SCI in the unmonitored time unit, but considers the second SCI monitored in the resource awareness window, and selects the first candidate according to the perception result in the resource awareness window.
  • Candidate resources are excluded from the resource collection.
  • the process of the first terminal excluding candidate resources satisfying the second condition in the first candidate resource set and determining the third candidate resource set is the same as the first terminal excluding candidate resources satisfying the second condition in the fifth candidate resource set in the above method 1,
  • the process of determining the third candidate resource set is similar, therefore, reference may be made to the corresponding description in the foregoing manner 1, and details are not repeated here.
  • S1103 The first terminal selects a candidate resource from the second candidate resource set to obtain a fourth candidate resource set.
  • the physical layer of the first terminal selects candidate resources from the second candidate resource set to obtain a fourth candidate resource set.
  • the first terminal may determine the fourth candidate resource set by any one of the following two methods:
  • Method 3 The first terminal excludes candidate resources satisfying the first condition in the second candidate resource set, determines a sixth candidate resource set, excludes candidate resources satisfying the second condition in the sixth candidate resource set, and determines a fourth candidate resource set.
  • the introduction of the first condition and the second condition can refer to the above method 1.
  • the first terminal excludes candidate resources satisfying the first condition in the second candidate resource set
  • determining the sixth candidate resource set includes: the first terminal excludes candidate resources satisfying the first condition in the second candidate resource set Candidate resources, determining a third intermediate set; if the number of candidate resources in the third intermediate set is less than the third threshold, the first terminal determines the second set of candidate resources as the sixth set of candidate resources, and if the number of candidate resources in the third intermediate set The number of is greater than or equal to the third threshold, then the first terminal determines the third intermediate set as the sixth candidate resource set.
  • the third threshold is the product of the third ratio and the number of candidate resources in the second candidate resource set.
  • the third ratio is greater than or equal to 0 and less than 1.
  • the first terminal excludes candidate resources satisfying the second condition in the sixth candidate resource set
  • determining the fourth candidate resource set includes: the first terminal excludes candidate resources satisfying the second condition in the sixth candidate resource set determining the fourth intermediate set of candidate resources; if the number of candidate resources in the fourth intermediate set is less than the fourth threshold, the first terminal excludes candidate resources satisfying the fourth condition in the sixth set of candidate resources, and determines the fourth set of candidate resources, If the number of candidate resources in the fourth intermediate set is greater than or equal to the fourth threshold, the first terminal determines the fourth intermediate set as the fourth candidate resource set.
  • the fourth condition includes overlapping with the resource indicated by the second SCI, and the corresponding measured value of RSRP is greater than or equal to the third critical value.
  • the third critical value is greater than the first critical value.
  • the third critical value the first critical value+YdB.
  • Y is a positive integer, such as Y can be 1, 3, 4, 5, 6 and so on. That is, the first terminal excludes the candidate resources that meet the second condition in the sixth candidate resource set, and determines the fourth intermediate set; if the number of candidate resources in the fourth intermediate set is less than the fourth threshold, the first terminal increases the RSRP threshold and re-selects the resources. exclude.
  • the fourth threshold is the product of the fourth ratio and the number of candidate resources in the second set of candidate resources. The fourth ratio is greater than or equal to 0 and less than 1.
  • the third ratio and the fourth ratio may be configured independently.
  • the third ratio and the fourth ratio can be the same or different.
  • the third ratio is configured by a network device (such as a base station) through RRC signaling.
  • the third ratio is based on resource pool configuration. Further, the third ratio may be one of 10%, 20%, 35%, and 50%.
  • the third ratio is greater than the fourth ratio.
  • the first ratio and the third ratio are two parameters configured independently.
  • the first ratio and the third ratio are two parameters configured jointly.
  • the first ratio is a minimum value among values of parameters configuring the third ratio.
  • the first ratio is smaller than the third ratio.
  • the second candidate resource set is design 1 or design 2 (that is, the second candidate resource set includes candidate resources during the active time of the second terminal and candidate resources during the inactive time of the second terminal).
  • the first ratio is equal to the third ratio.
  • the second candidate resource set is design 3 or design 4 (that is, the second candidate resource set includes candidate resources in the inactive time of the second terminal, but does not include candidate resources in the active time of the second terminal).
  • the interference degree of the candidate resources in the first candidate resource set and the candidate resources in the second candidate resource set may be different, therefore, the first ratio and the third ratio are configured separately, and/or, the second Scale and 4th scale are configured separately.
  • the first ratio and the third ratio may be the same or different, and/or the second ratio and the fourth ratio may be the same or different.
  • Method 4 The first terminal excludes candidate resources satisfying the second condition in the second set of candidate resources, and determines a fourth set of candidate resources.
  • the introduction of the second condition can refer to the above method 1. That is to say, in method 4, the first terminal does not consider whether there is an SCI in the unmonitored time unit, but considers the second SCI monitored in the resource awareness window, and selects the second candidate SCI according to the sensing result in the resource awareness window.
  • Candidate resources are excluded from the resource collection.
  • the process of the first terminal excluding candidate resources satisfying the second condition in the second candidate resource set to determine the fourth candidate resource set is the same as the first terminal excluding candidate resources satisfying the second condition in the sixth candidate resource set in the above method 3,
  • the process of determining the fourth candidate resource set is similar, therefore, reference may be made to the corresponding description in the foregoing manner 3, and details are not repeated here.
  • the sum of the candidate resources in the third candidate resource set and the candidate resources in the fourth candidate resource set is greater than or equal to the fifth threshold.
  • the fifth threshold is the product of the fifth ratio and the sum of the number of candidate resources in the first set of candidate resources and the number of candidate resources in the second set of candidate resources.
  • the fifth ratio is greater than 0 and less than or equal to 1.
  • the physical layer of the first terminal indicates the candidate resources in the third candidate resource set and the candidate resources in the fourth candidate resource set to the MAC layer of the first terminal, so that the MAC layer of the first terminal
  • the transmission resource is selected from the candidate resources in the three candidate resource sets and the candidate resources in the fourth candidate resource set.
  • the first terminal determines the third candidate resource set and the fourth candidate resource set.
  • the first terminal reports the third candidate resource set and the fourth candidate resource set to the MAC layer.
  • the first terminal determines the third candidate resource set and the fourth candidate resource set. Takes the union of two sets. The first terminal reports the union to the MAC layer.
  • the first terminal can determine the first set of candidate resources and the second set of candidate resources, select candidate resources from the first set of candidate resources and the second set of candidate resources respectively, and obtain the third set of candidate resources and the second set of candidate resources.
  • Four candidate resource collections In this way, the candidate resources in the first candidate resource set can occupy a certain proportion in the third candidate resource set, and the candidate resources in the second candidate resource set can occupy a certain proportion in the fourth candidate resource set, so that the first terminal can select Available transfer resources.
  • selecting resources for initial transmission in the third candidate set can ensure that the second terminal receives the data sent by the first terminal.
  • the actions of the first terminal in the above S1101-S1103 can be executed by the processor 401 in the communication device 40 shown in FIG. 4 calling the application program code stored in the memory 403, which is not limited in this embodiment .
  • FIG. 12 it is a data transmission method provided by the embodiment of the present application, and the method includes S1201-S1203.
  • the first terminal acquires a first resource set.
  • the MAC layer of the first terminal acquires the first resource set.
  • the first terminal may be any terminal in the communication system 30 shown in FIG. 3 .
  • the first terminal may be terminal 301 , terminal 302 or terminal 303 .
  • the first set of resources includes at least one first resource.
  • the first resource is a candidate resource within the activation time of the second terminal, and the first resource is used for the first terminal to send the first data to the second terminal.
  • the second terminal is a terminal communicatively connected with the first terminal. Taking the communication system 30 shown in FIG. 3 as an example, if the first terminal is the terminal 301 , the second terminal may be the terminal 302 or the terminal 303 .
  • the activation time of the second terminal is the activation time of the receiving terminal indicated when the MAC layer triggers the physical layer to perform resource selection.
  • the activation time of the second terminal is the activation time indicated when the MAC layer triggers the physical layer to select resources, that is, the activation time of the second terminal may be replaced by the activation time indicated by the MAC layer.
  • the number of the second terminal may be one or more, and in this case, the activation time of the second terminal is a union of the activation times of the one or more terminals.
  • acquiring the first resource set by the first terminal includes: acquiring the candidate resource set by the first terminal, selecting candidate resources from the candidate resource set according to the activation time of the second terminal, and obtaining the first resource set.
  • the MAC layer of the first terminal obtains the candidate resource set from the physical layer of the first terminal, and determines the candidate resource in the candidate resource set within the activation time of the second terminal as the first resource in the first resource set .
  • the process for the first terminal to obtain the first resource set may also be referred to as creating a sidelink grant (sidelink grant).
  • the MAC layer of the first terminal can select initial transmission resources during the activation time of the second terminal, and select retransmission resources as much as possible within the activation time of the second terminal. How to select available resources depends on the implementation of the first terminal.
  • the candidate resource set may be the third candidate resource set in the method shown in FIG. 5 , the method shown in FIG. 9 , or the method shown in FIG. 10 , or the third candidate resource set in the method shown in FIG. 11 The union of the set and the fourth set of candidate resources.
  • the first data has the highest priority among data corresponding to multiple logical channels of the first terminal, or the first data is stored in multiple media access control-control elements (medium access control elements) of the first terminal.
  • control control element, MAC-CE media access control element corresponding to the data
  • the first data has the highest priority among multiple logical channels or data corresponding to the MAC-CE of the first terminal.
  • S1202 The first terminal acquires the second data.
  • the MAC layer of the first terminal obtains the second data (it can also be understood that the MAC layer determines the logical channel or MAC CE with the highest priority among the current multiple logical channels or MAC-CEs).
  • the priority of the second data is higher than that of the first data, that is, after S1202, the second data has the highest priority among the data corresponding to the multiple logical channels of the first terminal, or the second data Among the data corresponding to the multiple MAC-CEs of the first terminal, the priority is the highest.
  • the second data is data sent by the first terminal to the third terminal.
  • the third terminal is different from the second terminal. Taking the communication system 30 shown in FIG. 3 as an example, if the first terminal is a terminal 301 and the second terminal is a terminal 302 , then the third terminal may be a terminal 303 .
  • the first terminal determines a terminal receiving data according to the first resource set and the activation time of the third terminal.
  • the MAC layer of the first terminal determines the terminal receiving the data according to the first resource set and the activation time of the third terminal.
  • the first terminal obtains the second data with a higher priority than the first data, so the receiving terminal corresponding to the first terminal has changed. , or in other words, the destination terminal of the first terminal has changed from the second terminal to the third terminal. Because the activation time of the third terminal and the activation time of the second terminal may be different, the resources in the first resource set may not be suitable for the third terminal, and the first terminal may not be able to select transmission resources for the third terminal in the first resource set , so the second data cannot be sent to the third terminal. In this case, the first terminal may determine the terminal receiving the data through the following possible implementation manners, so as to send data to the terminal receiving the data.
  • the first terminal uses the first resource to send the second data to the third terminal.
  • the data with the highest priority that is, the second data
  • the data with the highest priority can be sent on the first resource in the first resource set, so as to avoid increasing the delay of high-priority services.
  • the first terminal uses the first resource to send the first data to the second terminal.
  • the receiving terminal ie, the third terminal
  • the third terminal cannot receive the data, and the first resource is a candidate resource selected in the resource selection process triggered by the first data, therefore, Although the first data is not the data with the highest priority, the first terminal may send the first data to the second terminal when the third terminal cannot receive the second data on the first resource.
  • the first terminal uses the first resource to send the third data to the fourth terminal.
  • the priority corresponding to the third data is the highest among the data to be sent corresponding to the plurality of receiving terminals at the activation time on the first resource. It can be understood that the receiving terminal (ie, the third terminal) corresponding to the current data with the highest priority (ie, the third data) is in an inactive time on the first resource. If the first terminal uses this resource to send the second data to the third terminal, the third terminal cannot receive the data.
  • the first terminal may determine the data with the highest priority among the data to be sent corresponding to the plurality of receiving terminals at the activation time on the first resource, and send the data on the first resource. In this way, when the receiving terminal corresponding to the data to be sent with the highest priority is in the inactive time on the first resource, the first terminal may send the data to the receiving terminal corresponding to the data with the second highest priority among the data to be sent data to ensure the transmission reliability of data with higher priority.
  • the first terminal uses The resources in the first resource set send the second data to the third terminal.
  • the first terminal usually sends the data to be sent with the highest priority (that is, the second data) on the first resource, and if the receiving terminal (that is, the third terminal) corresponding to the data to be sent with the highest priority resource is inactive time, then the resources after the first resource in the first resource set can be used to send data to the receiving terminal, so as to ensure that the data sent by the first terminal to the receiving terminal can use the first resource set. resources in , there is no need to retrigger resource selection.
  • the first terminal sends the third data to the fourth terminal through the first resource.
  • the priority corresponding to the third data is the highest among the data to be sent corresponding to the plurality of receiving terminals at the activation time on the first resource. It can be understood that the receiving terminal (ie, the third terminal) corresponding to the current data with the highest priority (ie, the third data) is inactive on the resources in the first resource set. If the first terminal uses resources in the first resource set to send the second data to the third terminal, the third terminal cannot receive the data.
  • the first terminal may determine the data with the highest priority among the data to be sent corresponding to the plurality of receiving terminals at the activation time on the first resource, and send the data on the first resource. In this way, when the receiving terminal corresponding to the data to be sent with the highest priority is in the inactive time on the resource in the activation of the first resource, the first terminal may send the data to the data to be sent corresponding to the data with the second highest priority
  • the receiving terminal sends data to ensure transmission reliability of data with higher priority.
  • the first terminal selects a candidate resource from the candidate resource set according to the activation time of the third terminal to obtain the second resource set.
  • the resources in the second resource set are within the activation time of the third terminal.
  • the first terminal may send the second data to the third terminal on resources in the second resource set. That is to say, the first terminal can re-create a sidelink grant according to the activation time of the third terminal, or reselect resources for the sidelink grant from the candidate resource set as the first or retransmission resources of the third terminal, so that the data with the highest priority (that is, the second data) can be sent preferentially to avoid increasing the time delay of high-priority services.
  • the actions of the first terminal in the above S1201-S1203 can be executed by the processor 401 in the communication device 40 shown in FIG. 4 calling the application program code stored in the memory 403, which is not limited in this embodiment .
  • S501-S503, S1001-S1002, S901-S902, and S1201-S1203 can be used in parallel or in series.
  • S1201-S1203 may be executed after S501-S503.
  • S1201-S1203 can be executed after S901-S902, and S1201-S1203 can be executed after S1001-S1002.
  • the descriptions of the concepts in the various embodiments can be used in common.
  • the methods and/or steps implemented by the first terminal may also be implemented by components (such as chips or circuits) that can be used for the first terminal.
  • An embodiment of the present application further provides a communication device, which may be the first terminal in the foregoing method embodiments, or a device including the foregoing first terminal, or a component applicable to the first terminal.
  • a communication device which may be the first terminal in the foregoing method embodiments, or a device including the foregoing first terminal, or a component applicable to the first terminal.
  • the above-mentioned first terminal and the like include corresponding hardware structures and/or software modules for performing various functions.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.
  • the functional modules of the first terminal may be divided according to the above method example.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 13 shows a schematic structural diagram of a communication device 130 .
  • the communication device 130 includes a processing module 1301 .
  • the communication device 130 is configured to realize the function of the first terminal.
  • the communication device 130 is, for example, the first terminal described in the embodiment shown in FIG. 5 .
  • the processing module 1301 is configured to determine a first set of candidate resources, the first set of candidate resources is a set of candidate resources within the resource selection window, the candidate resources include at least one frequency domain unit corresponding to the first time unit, the first time unit It is one of multiple time units in the resource selection window, the first candidate resource set includes at least one first candidate resource, and the first candidate resource is a candidate resource within the activation time of the second terminal within the resource selection window.
  • the processing module 1301 is further configured to exclude candidate resources satisfying the first condition in the first set of candidate resources, and determine a second set of candidate resources.
  • the processing module 1301 is further configured to determine a third set of candidate resources if the number of the first candidate resources in the second set of candidate resources is less than or equal to the first threshold, and the third set of candidate resources includes The number of the first candidate resources included in the third candidate resource set is greater than or equal to the first threshold.
  • the first condition includes overlapping with resources indicated by the first sidelink control information
  • the first sidelink control information is the time when it is assumed that the first terminal does not monitor within the resource awareness window Sidelink control information heard on the unit.
  • the frequency domain resources indicated by the first sidelink control information are all frequency domain units in the resource pool, and the resource reservation period indicated by the first sidelink control information is configured on the resource pool.
  • the processing module 1301 is specifically configured to exclude candidate resources satisfying a second condition in the first set of candidate resources, and determine a third candidate resource, where the second condition includes being within the inactivation time of the second terminal , and overlap with the resources indicated by the first sidelink control information.
  • the processing module 1301 is specifically configured to select at least one first candidate resource among the excluded candidate resources, and determine it as a candidate resource in the third candidate resource set.
  • the at least one first candidate resource is randomly determined among the excluded first candidate resources; or, the at least one first candidate resource is determined at a time domain position close to The first N first candidate resources, where N is a positive integer.
  • the first condition includes overlapping with the resources indicated by the second side uplink control information, and the corresponding measured value of the reference signal received power RSRP is greater than or equal to the first critical value, and the second side The uplink control information is sidelink control information received by the first terminal within the resource sensing window.
  • the processing module 1301 is specifically configured to exclude candidate resources satisfying the third condition in the first set of candidate resources, and determine a third set of candidate resources, where the third condition includes being within the activation time of the second terminal , overlaps with the resource indicated by the second sidelink control information, and the corresponding RSRP measurement value is greater than or equal to the second critical value, and is within the inactivation time of the second terminal, and the second sidelink control information
  • the processing module 1301 is specifically configured to exclude candidate resources satisfying the third condition in the first set of candidate resources, and determine a third set of candidate resources, where the third condition includes being within the activation time of the second terminal , overlaps with the resource indicated by the second sidelink control information, and the corresponding RSRP measurement value is greater than or equal to the second critical value, and is within the inactivation time of the second terminal, and the second sidelink control information
  • the resources indicated by the information overlap, and the measured value of the corresponding RSRP is greater than or equal to the first critical value, and the second critical value is greater than the first
  • the processing module 1301 is specifically configured to select M first candidate resources from the excluded first candidate resources according to the order of RSRP measurement values from high to low, and determine the M first candidate resources is a candidate resource in the third candidate resource set, and M is a positive integer.
  • the first threshold is a product of a first ratio and the number of candidate resources in the first time window, and the first ratio is greater than or equal to 0 and less than 1.
  • the first time window is a resource selection window; or, the start position of the time domain of the first time window is the start position of the activation time of the second terminal within the resource selection window, and the first time The time domain end position of the window is the time domain end position of the resource selection window; or, the time domain start position of the first time window is the start position of the activation time of the second terminal in the resource selection window, and the first time window The end position of the time domain is the end position of the time domain of the activation time of the second terminal within the resource selection window.
  • the time-domain start position of the resource selection window is n+T 1
  • the time-domain end position of the resource selection window is n+T 2
  • the time-domain start position of the resource selection window is n+T 3
  • the time domain end position of the resource selection window is n+T 2 ;
  • the first terminal is triggered to perform resource selection at time unit n
  • T 1 and T 2 are positive integers
  • T 3 is the start position in the time domain of the activation time of the second terminal after n+T 1 .
  • the processing module 1301 is further configured to acquire the activation time of the second terminal.
  • the processing module 1301 is specifically configured to obtain first indication information, and the first indication information is used to indicate the time domain position of the activation time of the second terminal; The indication information determines the activation time of the second terminal.
  • the first indication information includes at least one group of start positions in the time domain of the activation time of the second terminal and the length of the activation time of the second terminal; or, the first indication information includes at least one group of first The time domain start position and the time domain end position of the activation time of the two terminals; or, the first indication information includes m bits, m bits correspond to m time units, and the value of each bit is used to indicate whether the time unit corresponding to the bit is within the activation time of the second terminal.
  • the first indication information includes m bits
  • the symbol where the activation time of the second terminal is located does not completely overlap with the symbol where the physical sidelink control channel PSCCH is located
  • the first time unit is within the inactive time of the second terminal, and the first time unit is any one of the m time units.
  • the communication device 130 is configured to realize the function of the first terminal.
  • the communication device 130 is, for example, the first terminal described in the embodiment shown in FIG. 9 .
  • the processing module 1301 is configured to exclude candidate resources satisfying a first preset condition in the first set of candidate resources, and determine a second set of candidate resources.
  • the first set of candidate resources is a set of candidate resources in the resource selection window
  • the candidate resources include at least one frequency domain unit corresponding to the first time unit
  • the first time unit is one of multiple time units in the resource selection window
  • the first candidate resource set includes at least one first candidate resource
  • the first candidate resource is a candidate resource within the resource selection window within the activation time of the second terminal
  • the first preset condition includes information related to the second sidelink control information
  • the second sidelink control information is the sidelink control information received by the first terminal within the resource sensing window information.
  • the processing module 1301 is further configured to determine a third candidate resource set according to the number of candidate resources in the second candidate resource set and the number of first candidate resources in the second candidate resource set, where the third candidate resource set includes at least one A candidate resource, the number of candidate resources in the third candidate resource set is greater than or equal to the first threshold.
  • the processing module 1301 is specifically configured to: if the number of candidate resources in the second set of candidate resources is less than the first threshold, and the number of first candidate resources in the second set of candidate resources is less than the second threshold, select at least one first candidate resource among the excluded candidate resources, and determine it as a candidate resource in the third candidate resource set.
  • At least one first candidate resource is randomly determined from the excluded first candidate resources; or, the excluded first candidate resources are selected according to the order of RSRP measurement value from high to low
  • the M first candidate resources of are determined as candidate resources in the third candidate resource set, where M is a positive integer.
  • the processing module 1301 is specifically configured to: if the number of candidate resources in the second set of candidate resources is less than the first threshold, and the number of first candidate resources in the second set of candidate resources is less than the second Threshold, exclude the candidate resources that meet the second preset condition in the first candidate resource set, and determine the third candidate resource set, the second preset condition includes being within the activation time of the second terminal, and the second sidelink control
  • the resources indicated by the information overlap, and the corresponding RSRP measurement value is greater than or equal to the second critical value, and within the inactivation time of the second terminal, overlaps with the resources indicated by the second sidelink control information, and corresponds to
  • the measured value of RSRP is greater than or equal to the first critical value, and the second critical value is greater than the first critical value.
  • the processing module 1301 is specifically configured to: if the number of candidate resources in the second set of candidate resources is less than the first threshold, and the number of first candidate resources in the second set of candidate resources is greater than or equal to
  • the second threshold is to exclude candidate resources that meet a third preset condition in the first candidate resource set, and determine a third candidate resource set, where the third preset condition includes overlapping with resources indicated by the second sidelink control information, And the measured value of the corresponding RSRP is greater than or equal to a third critical value, and the third critical value is greater than the first critical value.
  • the processing module 1301 is specifically configured to: if the number of candidate resources in the second set of candidate resources is greater than or equal to the first threshold, and the number of first candidate resources in the second set of candidate resources is less than
  • the second threshold is to exclude candidate resources that meet the fourth preset condition in the first candidate resource set, and determine the third candidate resource set; the fourth preset condition includes being within the non-activation time of the second terminal, and being on the same side as the second terminal.
  • the processing module 1301 is specifically configured to: if the number of candidate resources in the second set of candidate resources is greater than or equal to the first threshold, and the number of first candidate resources in the second set of candidate resources is less than For the second threshold, at least one first candidate resource in the first set of candidate resources is determined to be a candidate resource in the third set of candidate resources.
  • the communication device 130 is configured to realize the function of the first terminal.
  • the communication device 130 is, for example, the first terminal described in the embodiment shown in FIG. 10 .
  • the processing module 1301 is configured to determine a first set of candidate resources.
  • the first set of candidate resources is a set of candidate resources in the resource selection window
  • the candidate resources include at least one frequency domain unit corresponding to the first time unit
  • the first time unit is one of multiple time units in the resource selection window
  • the first candidate resource set includes at least one first candidate resource, where the first candidate resource is a candidate resource within the resource selection window within the activation time of the second terminal.
  • the processing module 1301 is further configured to exclude candidate resources satisfying the first condition in the first set of candidate resources, and determine a second set of candidate resources.
  • the first condition includes being located within the inactive time of the second terminal and overlapping with resources indicated by the first sidelink control information; the first sidelink control information is assuming that the first terminal is within the resource awareness window Sidelink control information overheard on time units not overheard.
  • the processing module 1301 is further configured to exclude candidate resources satisfying the second condition in the second set of candidate resources, and determine a third set of candidate resources; the second condition includes the inactivation time at the second terminal and overlaps with the resource indicated by the second sidelink control information, and the corresponding reference signal received power is greater than or equal to the first critical value, the second sidelink control information is that the first terminal is within the resource awareness window Received sidelink control information.
  • the communication device 130 is configured to realize the function of the first terminal.
  • the communication device 130 is, for example, the first terminal described in the embodiment shown in FIG. 11 .
  • the processing module 1301 is configured to determine a first set of candidate resources and a second set of candidate resources.
  • the first set of candidate resources is a set of candidate resources within the activation time of the second terminal within the resource selection window
  • the second set of candidate resources is a set of candidate resources within the resource selection window
  • the second set of candidate resources is resource Select a set of candidate resources within the non-activation time of the second terminal in the window
  • the second set of candidate resources is a set of candidate resources in the first time window
  • the starting position of the first time window is the first time window in the resource selection window.
  • the start position of the activation time of the two terminals, and the end position of the first time window are the end positions of the resource selection window.
  • the processing module 1301 is further configured to select a candidate resource from the first candidate resource set to obtain a third candidate resource set.
  • the processing module 1301 is further configured to select a candidate resource from the second candidate resource set to obtain a fourth candidate resource set.
  • the processing module 1301 is specifically configured to exclude candidate resources satisfying the first condition in the first set of candidate resources, and determine a fifth set of candidate resources, where the first condition includes The resources indicated by the information overlap, and the first sidelink control information is assumed to be the sidelink control information monitored by the first terminal in the time unit that is not monitored within the resource awareness window; the processing module 1301 is also specifically used to exclude A third candidate resource set is determined for the candidate resources in the fifth candidate resource set that meet the second condition, the second condition includes overlapping with the resource indicated by the second sidelink control information, and the measurement of the corresponding reference signal received power RSRP The value is greater than or equal to the first critical value, and the second sidelink control information is the sidelink control information received by the first terminal within the resource awareness window.
  • the processing module 1301 is specifically configured to exclude candidate resources satisfying the first condition in the first candidate resource set, and determine the first intermediate set; the processing module 1301 is also specifically configured to determine the first intermediate set if the first intermediate set If the number of candidate resources is less than the first threshold, the first set of candidate resources is determined as the fifth set of candidate resources.
  • the first threshold is a product of a first ratio and the number of candidate resources in the first candidate resource set, and the first ratio is greater than or equal to 0 and less than 1.
  • the processing module 1301 is specifically configured to exclude candidate resources satisfying the second condition in the fifth candidate resource set, and determine the second intermediate set; the processing module 1301 is also specifically configured to determine the second intermediate set if the second intermediate set If the number of candidate resources in the set is less than the second threshold, the candidate resources satisfying the third condition in the fifth set of candidate resources are excluded, and the third set of candidate resources is determined. overlap, and the corresponding measured value of RSRP is greater than or equal to a second critical value, and the second critical value is greater than the first critical value.
  • the second threshold is the product of the second ratio and the number of candidate resources in the first candidate resource set, and the second ratio is greater than or equal to 0 and less than 1.
  • the first ratio and the second ratio are independently configured.
  • the processing module 1301 is specifically configured to exclude candidate resources satisfying the first condition in the second candidate resource set, and determine a sixth candidate resource set; the processing module 1301 is also specifically configured to exclude the sixth candidate resource set Candidate resources in the resource set that meet the second condition are determined as a fourth candidate resource set.
  • the processing module 1301 is specifically configured to exclude candidate resources satisfying the first condition in the second candidate resource set, and determine a third intermediate set; the processing module 1301 is also specifically configured to determine the third intermediate set if the third intermediate set If the number of candidate resources in is less than the third threshold, the second set of candidate resources is determined as the sixth set of candidate resources.
  • the third threshold is a product of a third ratio and the number of candidate resources in the second candidate resource set, and the third ratio is greater than or equal to 0 and less than 1.
  • the processing module 1301 is specifically configured to exclude candidate resources satisfying the second condition in the sixth candidate resource set, and determine the fourth intermediate set; the processing module 1301 is also specifically configured to determine the fourth intermediate set if the fourth intermediate set If the number of candidate resources in the set is less than the fourth threshold, exclude the candidate resources in the sixth set of candidate resources that satisfy the fourth condition, and determine the fourth set of candidate resources, where the fourth condition includes being related to the resource indicated by the second sidelink control information overlap, and the corresponding measured value of RSRP is greater than or equal to a third critical value, and the third critical value is greater than the first critical value.
  • the fourth threshold is a product of a fourth ratio and the number of candidate resources in the second candidate resource set, and the fourth ratio is greater than or equal to 0 and less than 1.
  • the third ratio and the fourth ratio are configured independently.
  • the first ratio and the third ratio are configured independently, and/or, the second ratio and the fourth ratio are configured independently.
  • the sum of the number of candidate resources in the third candidate resource set and the number of candidate resources in the fourth candidate resource set is greater than or equal to a fifth threshold
  • the fifth threshold is the fifth ratio and the first candidate resource set The product of the sum of the number of candidate resources in the middle candidate resource and the number of candidate resources in the second set of candidate resources.
  • the communication device 130 is configured to realize the function of the first terminal.
  • the communication device 130 is, for example, the first terminal described in the embodiment shown in FIG. 12 .
  • the processing module 1301 is configured to obtain the first resource set.
  • the first resource set includes at least one first resource, the first resource is used for the first terminal to send the first data to the second terminal, and the first data has the highest priority among data corresponding to multiple logical channels of the first terminal , the first resource is a candidate resource within the activation time of the second terminal.
  • the processing module 1301 is further configured to obtain second data, the priority of the second data is higher than the priority of the first data, the second data is the data sent by the first terminal to the third terminal, and the third terminal is different from the second terminal .
  • the processing module 1301 is further configured to determine a terminal receiving data according to the first resource set and the activation time of the third terminal.
  • the processing module 1301 is specifically configured to use the first resource to send the second data to the third terminal if the first resource in the first resource set is within the activation time of the third terminal ; Or, if the first resource in the first resource set is not within the activation time of the third terminal, then use the first resource to send the first data to the second terminal; or, if the first resource in the first resource set If the first resource is not within the activation time of the third terminal, use the first resource to send the third data to the fourth terminal, and the priority corresponding to the third data is corresponding to the multiple receiving terminals that are in the activation time on the first resource.
  • the data to be sent is the highest; or, if the first resource in the first resource set is not within the activation time of the third terminal, and there is a resource in the first resource set within the activation time of the third terminal, use the first resource
  • the resources in a resource set send the second data to the third terminal; or, if the resources in the first resource set are not within the activation time of the third terminal, send the third data to the fourth terminal through the first resource,
  • the priority corresponding to the third data is the highest among the data to be sent corresponding to the plurality of receiving terminals that are active on the first resource.
  • the processing module 1301 is specifically configured to obtain a candidate resource set, select a candidate resource from the candidate resource set according to the activation time of the second terminal, and obtain the first resource set; the processing module 1301 is also used to Select candidate resources from the candidate resource set according to the activation time of the third terminal to obtain a second resource set, and the resources in the second resource set are within the activation time of the third terminal.
  • the communication device 130 can take the form shown in FIG. 4 .
  • the processor 401 in FIG. 4 may invoke the computer-executed instructions stored in the memory 403, so that the communication device 130 executes the methods described in the foregoing method embodiments.
  • the function/implementation process of the processing module 1301 in FIG. 13 can be realized by calling the computer execution instructions stored in the memory 403 by the processor 401 in FIG. 4 .
  • one or more of the above modules or units may be implemented by software, hardware or a combination of both.
  • the software exists in the form of computer program instructions and is stored in the memory, and the processor can be used to execute the program instructions and realize the above method flow.
  • the processor can be built into a SoC (system on a chip) or ASIC, or it can be an independent semiconductor chip.
  • the core of the processor is used to execute software instructions for calculation or processing, and can further include necessary hardware accelerators, such as field programmable gate array (field programmable gate array, FPGA), PLD (programmable logic device) , or a logic circuit that implements a dedicated logic operation.
  • the hardware can be CPU, microprocessor, digital signal processing (digital signal processing, DSP) chip, microcontroller unit (microcontroller unit, MCU), artificial intelligence processor, ASIC, Any one or any combination of SoC, FPGA, PLD, dedicated digital circuit, hardware accelerator or non-integrated discrete device, which can run necessary software or not depend on software to execute the above method flow.
  • DSP digital signal processing
  • MCU microcontroller unit
  • ASIC artificial intelligence processor
  • an embodiment of the present application further provides a chip system, including: at least one processor and an interface, the at least one processor is coupled to the memory through the interface, and when the at least one processor executes the computer program or instruction in the memory When, the method in any one of the above method embodiments is executed.
  • the chip system further includes a memory.
  • the system-on-a-chip may consist of a chip, or may include a chip and other discrete devices, which is not specifically limited in this embodiment of the present application.
  • the embodiment of the present application further provides a computer-readable storage medium. All or part of the processes in the above method embodiments can be completed by computer programs to instruct related hardware, and the program can be stored in the above computer-readable storage medium. When the program is executed, it can include the processes of the above method embodiments .
  • the computer-readable storage medium may be an internal storage unit of the communication device in any of the foregoing embodiments, such as a hard disk or memory of the communication device.
  • the above-mentioned computer-readable storage medium may also be an external storage device of the above-mentioned communication device, such as a plug-in hard disk equipped on the above-mentioned communication device, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, Flash card (flash card), etc. Further, the above-mentioned computer-readable storage medium may also include both an internal storage unit of the above-mentioned communication device and an external storage device.
  • the above-mentioned computer-readable storage medium is used to store the above-mentioned computer program and other programs and data required by the above-mentioned communication device.
  • the computer-readable storage medium described above can also be used to temporarily store data that has been output or will be output.
  • the embodiment of the present application further provides a computer program product. All or part of the processes in the above method embodiments can be completed by computer programs instructing related hardware, and the programs can be stored in the above computer program products. When the programs are executed, they can include the processes of the above method embodiments.
  • the embodiment of the present application further provides a computer instruction. All or part of the procedures in the above method embodiments can be completed by computer instructions to instruct related hardware (such as computers, processors, access network devices, mobility management network elements or session management network elements, etc.).
  • the program may be stored in the above-mentioned computer-readable storage medium or in the above-mentioned computer program product.
  • the disclosed devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be Incorporation or may be integrated into another device, or some features may be omitted, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the unit described as a separate component may or may not be physically separated, and the component displayed as a unit may be one physical unit or multiple physical units, that is, it may be located in one place, or may be distributed to multiple different places . Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

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Abstract

本申请公开了确定候选资源集合的方法及装置，可以使得发送终端确定的候选资源集合中的候选资源位于接收终端的激活时间内，使得接收终端可以接收数据。该方法包括：确定第一候选资源集合；排除第一候选资源集合中满足第一条件的候选资源，确定第二候选资源集合；若在第二候选资源集合中，第一候选资源的数量小于或等于第一阈值，则确定第三候选资源集合。其中，第一候选资源集合包括的至少一个第一候选资源为资源选择窗内位于第二终端的激活时间内的候选资源。第三候选资源集合包括第二候选资源集合所包含的候选资源和被排除的候选资源中的至少一个第一候选资源，第三候选资源集合包含的第一候选资源大于或等于第一阈值。

Description

确定候选资源集合的方法及装置
“本申请要求于2021年11月5日提交国家知识产权局、申请号为202111311163.8、发明名称为“确定候选资源集合的方法及装置”的专利申请的优先权，其全部内容通过引用结合在本申请中”。
技术领域
本申请涉及无线通信领域，尤其涉及确定候选资源集合的方法及装置。
背景技术
在通信系统中，为了降低终端的功耗，引入了非连续接收(discontinuous reception，DRX)模式。终端处于DRX模式时，在一个任意的时间段内，一部分时间为激活时间(active time)，一部分时间为非激活时间(inactive time)。在激活时间内，终端可以监听侧行链路控制信息(sidelink control information，SCI)。在非激活时间内，终端可以跳过监听SCI，即终端不监听SCI。
通常，发送终端需要向接收终端发送数据时，发送终端可以采用资源分配方式1或资源分配方式2确定传输资源。资源分配方式1是指网络设备为发送终端分配传输资源，而网络设备通常需要管理通信系统中的资源，所以会为发送终端分配接收终端的激活时间内的资源，以便接收终端接收数据。资源分配方式2是发送终端自己确定传输资源。而发送终端如何使得自己确定的传输资源包括在接收终端的激活时间内是一个亟需解决的问题。
发明内容
本申请实施例提供确定候选资源集合的方法及装置，可以使得发送终端确定的候选资源集合中的候选资源位于接收终端的激活时间内，使得接收终端可以接收数据。
为达到上述目的，本申请的实施例采用如下技术方案：
第一方面，提供了一种确定候选资源集合的方法，执行该确定候选资源集合的方法的通信装置可以为第一终端；也可以为应用于第一终端中的模块，例如芯片或芯片系统。下面以执行主体为第一终端为例进行描述。该方法包括：确定第一候选资源集合，该第一候选资源集合为资源选择窗内的候选资源的集合，该候选资源包括第一时间单元对应的至少一个频域单元，该第一时间单元为该资源选择窗内的多个时间单元中的一个，该第一候选资源集合包括至少一个第一候选资源，该第一候选资源为该资源选择窗内位于第二终端的激活时间内的候选资源；排除该第一候选资源集合中满足第一条件的候选资源，确定第二候选资源集合；若在该第二候选资源集合中，该第一候选资源的数量小于或等于第一阈值，则确定第三候选资源集合，该第三候选资源集合包括该第二候选资源集合所包含的候选资源和被排除的候选资源中的至少一个第一候选资源，该第三候选资源集合包含的第一候选资源的数量大于或等于第一阈值。
基于上述第一方面提供的方法，第一终端可以确定第一候选资源集合，并根据第一条件在第一候选资源集合中排除候选资源，得到第二候选资源集合。在第二候选资 源集合中，位于第二终端的激活时间内的第一候选资源的数量小于或等于第一阈值的情况下，可以确定第三候选资源集合，使得第三候选资源集合中、第一候选资源的数量大于或等于第一阈值。如此，可以使得第一终端确定的候选资源集合中包括第二终端的激活时间内的候选资源，以便第二终端可以接收到第一终端发送的数据。另外，在确定第三候选资源集合时，第一终端是将被排除的候选资源中的第一候选资源确定为第三候选资源集合中的候选资源，而未将被排除的候选资源中的第二候选资源(位于第二终端的非激活时间内的候选资源)确定为第三候选资源集合中的候选资源。一方面，可以避免第三候选资源集合中包括不必要的候选资源(第二终端的非激活时间内，没有监听的候选资源或干扰大的候选资源)，另一方面，被排除的候选资源的可靠性无法保证，因此，不将被排除的候选资源中的第二候选资源确定为第三候选资源集合中的候选资源，可以减少第三候选资源集合中的候选资源发生资源冲突的概率，提高在第三候选资源集合中的候选资源上传输的数据的可靠性。
在一种可能的实现方式中，第一条件包括与第一侧行链路控制信息指示的资源有重叠，该第一侧行链路控制信息是假设该第一终端在资源感知窗内没有监听的时间单元上监听到的侧行链路控制信息。基于上述方法，第一终端可以将没有监听的时间单元对应的候选资源从第一候选资源集合中排除掉。
在一种可能的实现方式中，该第一侧行链路控制信息指示的频域资源为资源池内全部频域单元，该第一侧行链路控制信息指示的资源预留周期为配置在该资源池上的资源预留周期中的一个。基于上述方法，第一终端可以根据第一侧行链路指示信息指示的资源在第一候选资源集合中排除候选资源。
在一种可能的实现方式中，该确定第三候选资源集合，包括：排除该第一候选资源集合中满足第二条件的候选资源，确定该第三候选资源，该第二条件包括位于该第二终端的非激活时间内，并且与该第一侧行链路控制信息指示的资源有重叠。基于上述方法，第一终端可以将第一候选资源集合中、位于第二终端的非激活时间内，并且与第一侧行链路控制信息指示的资源有重叠的候选资源排除掉，使得第三候选资源集合中第一候选资源(资源选择窗内位于第二终端的激活时间内的候选资源)的数量大于或等于第一阈值。
在一种可能的实现方式中，确定第三候选资源集合，包括：选择该被排除的候选资源中的至少一个第一候选资源，确定为该第三候选资源集合中的候选资源。基于上述方法，第一终端可以将被排除的候选资源中的至少一个第一候选资源，确定为第三候选资源集合中的候选资源，使得第三候选资源集合中第一候选资源的数量大于或等于第一阈值。
在一种可能的实现方式中，该至少一个第一候选资源为在该被排除的第一候选资源中随机确定的；或者，该至少一个第一候选资源为该被排除的第一候选资源中时域位置靠前的N个第一候选资源，N为正整数。基于上述方法，第一终端可以在被排除的第一候选资源中随机确定第一候选资源，并将随机确定的第一候选资源确定为第三候选资源集合中的候选资源，使得第三候选资源集合中第一候选资源的数量大于或等于第一阈值。另外，在被排除的候选资源中随机确定第一候选资源可以使得干扰随机化，而且实现起来较为简单。或者，第一终端可以将被排除的第一候选资源中时域位 置靠前的N个第一候选资源，确定为第三候选资源集合中的候选资源，使得第三候选资源集合中第一候选资源的数量大于或等于第一阈值。而且将被排除的第一候选资源中时域位置靠前的N个第一候选资源，确定为第三候选资源集合中的候选资源，可以使得待发送数据被尽快发送。
在一种可能的实现方式中，该方法还包括：排除该第三候选资源集合中满足第四条件的候选资源，确定第四候选资源集合，该第四条件包括与第二侧行链路控制信息指示的资源有重叠，并且对应的参考信号接收功率RSRP的测量值大于或等于第一临界值，该第二侧行链路控制信息为该第一终端在资源感知窗内接收到的侧行链路控制信息；若在该第四候选资源集合中，该第一候选资源的数量小于或等于第二阈值，确定第五候选资源集合，该第五候选资源集合包括该第四候选资源集合所包含的候选资源和该第三候选资源集合中被排除的候选资源中的至少一个第一候选资源，该第五候选资源集合包含的第一候选资源的数量大于或等于第二阈值。基于上述方法，第一终端可以将干扰较大的候选资源从第三候选资源集合中排除掉，得到第四候选资源集合，并且在该第四候选资源集合中的第一候选资源的数量小于或等于第二阈值的情况下，确定第五候选资源集合，使得第五候选资源集合中、第一候选资源的数量大于或等于第二阈值。如此，可以使得第一终端确定的第五候选资源集合中包括第二终端的激活时间内的候选资源，以便第二终端可以接收到第一终端发送的数据。另外，在确定第五候选资源集合时，第一终端是将第三候选资源集合中被排除的候选资源中的第一候选资源确定为第五候选资源集合中的候选资源，而未将第三候选资源集合中被排除的候选资源中的第二候选资源(位于第二终端的非激活时间内的候选资源)确定为第五候选资源集合中的候选资源。一方面，可以避免第五候选资源集合中包括不必要的候选资源(第二终端的非激活时间内干扰大的候选资源)，另一方面，第三候选资源集合中被排除的候选资源的可靠性无法保证，因此，不将第三候选资源集合中被排除的候选资源中的第二候选资源确定为第五候选资源集合中的候选资源，可以减少第五候选资源集合中的候选资源发生资源冲突的概率，提高在第五候选资源集合中的候选资源上传输的数据的可靠性。
在一种可能的实现方式中，确定第五候选资源集合，包括：排除该第三候选资源集合中满足第五条件的候选资源，确定该第五候选资源集合，该第五条件包括位于该第二终端的激活时间内，与该第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第三临界值，以及位于该第二终端的非激活时间内，与该第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于该第一临界值，该第三临界值大于该第一临界值。基于上述方法，第一终端可以通过提高RSRP阈值的方法，重新在第三候选资源集合中排除候选资源，使得第五候选资源集合中第一候选资源的数量大于或等于第一阈值。
在一种可能的实现方式中，确定第五候选资源集合，包括：在该第三候选资源集合中被排除的第一候选资源中按照RSRP测量值从高到低的顺序选择P个第一候选资源，确定该P个第一候选资源为该第五候选资源集合中的候选资源，P为正整数。基于上述方法，第一终端可以将第三候选资源集合中被排除的第一候选资源中、RSRP测量值最高的M个第一候选资源，确定为第五候选资源集合中的候选资源，使得第五 候选资源集合中第一候选资源的数量大于或等于第一阈值。可以理解的，按照RSRP测量值从高到低的顺序选择第一候选资源，可以使得低干扰的候选资源优先被选择。由于使用低干扰的资源传输数据比使用高干扰的资源传输数据的成功率更高，所以按照RSRP测量值从高到低的顺序选择第一候选资源可以提高数据传输的可靠性。
在一种可能的实现方式中，第二阈值为第二比例与第一时间窗内的候选资源的数量之积，该第二比例大于或等于0并且小于1。基于上述方法，可以使得第五候选资源集合中第一候选资源在第一时间窗内的候选资源占据一定比例，使得后续第一终端有选择资源的余地。
在一种可能的实现方式中，该第一条件包括与第二侧行链路控制信息指示的资源有重叠，并且对应的参考信号接收功率RSRP的测量值大于或等于第一临界值，该第二侧行链路控制信息为该第一终端在资源感知窗内接收到的侧行链路控制信息。基于上述方法，第一终端可以将干扰较大的候选资源从第一候选资源集合中排除掉。
在一种可能的实现方式中，确定第三候选资源集合，包括：排除该第一候选资源集合中满足第三条件的候选资源，确定该第三候选资源集合，该第三条件包括位于该第二终端的激活时间内，与该第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第二临界值，以及位于该第二终端的非激活时间内，与该第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于该第一临界值，该第二临界值大于该第一临界值。基于上述方法，第一终端可以通过提高RSRP阈值的方法，重新在第一候选资源集合中排除候选资源，使得第三候选资源集合中第一候选资源的数量大于或等于第一阈值。
在一种可能的实现方式中，确定第三候选资源集合，包括：在该第一候选资源集合中被排除的第一候选资源中按照RSRP测量值从高到低的顺序选择M个第一候选资源，确定该M个第一候选资源为该第三候选资源集合中的候选资源，M为正整数。基于上述方法，第一终端可以将第一候选资源集合中被排除的第一候选资源中RSRP测量值最高的M个第一候选资源，确定为第三候选资源集合中的候选资源，使得第三候选资源集合中第一候选资源的数量大于或等于第一阈值。可以理解的，按照RSRP测量值从高到低的顺序选择第一候选资源，可以使得低干扰的候选资源优先被选择。由于使用低干扰的资源传输数据比使用高干扰的资源传输数据的成功率更高，所以按照RSRP测量值从高到低的顺序选择第一候选资源可以提高数据传输的可靠性。
在一种可能的实现方式中，该第一阈值为第一比例与第一时间窗内的候选资源的数量之积，该第一比例大于或等于0并且小于1。基于上述方法，可以使得第三候选资源集合中第一候选资源在第一时间窗内的候选资源占据一定比例，使得后续第一终端有选择资源的余地。
在一种可能的实现方式中，该第一时间窗为资源选择窗；或者，该第一时间窗的时域起始位置为资源选择窗内、该第二终端的激活时间的起始位置，该第一时间窗的时域结束位置为该资源选择窗的时域结束位置；或者，该第一时间窗的时域起始位置为资源选择窗内、该第二终端的激活时间的起始位置，该第一时间窗的时域结束位置为该资源选择窗内、该第二终端的激活时间的时域结束位置。基于上述方法，对第一时间窗有多种定义，以满足各种不同的应用场景的需求。
在一种可能的实现方式中，该资源选择窗的时域起始位置为n+T 1，该资源选择窗的时域结束位置为n+T 2，或者，该资源选择窗的时域起始位置为n+T 3，该资源选择窗的时域结束位置为n+T 2；其中，该第一终端在时间单元n被触发进行资源选择，T 1和T 2是正整数，T 3为在n+T 1之后，该第二终端的激活时间的时域起始位置。基于上述方法，可以确定资源选择窗的时域位置。
在一种可能的实现方式中，该方法还包括：获取该第二终端的激活时间。基于上述方法，第一终端可以获取到第二终端的激活时间，以便第一终端根据第二终端的激活时间确定候选资源。
在一种可能的实现方式中，获取该第二终端的激活时间，包括：获取第一指示信息，该第一指示信息用于指示该第二终端的激活时间的时域位置；根据该第一指示信息，确定该第二终端的激活时间。基于上方法，第一终端可以根据第一指示信息确定第二终端的激活时间。
在一种可能的实现方式中，该第一指示信息包括至少一组该第二终端的激活时间的时域起始位置和该第二终端的激活时间的长度；或者，第一指示信息包括至少一组该第二终端的激活时间的时域起始位置和时域结束位置；或者，该第一指示信息包括m比特，该m比特与m个时间单元对应，每个比特的值用于指示该比特对应的时间单元是否位于该第二终端的激活时间内。基于上述方法，第一指示信息可以通过多种方式指示第二终端的激活时间的时域位置，提高了第一指示信息指示第二终端的激活时间的时域位置的多样性和灵活性。
在一种可能的实现方式中，若该第一指示信息包括m个比特，在第一时间单元内，该第二终端的激活时间所在的符号与物理侧行链路控制信道PSCCH所在的符号不完全重叠，则该第一时间单元位于该第二终端的非激活时间内，该第一时间单元为m个时间单元中的任意一个。基于上述方法，可以确定一个时间单元位于第二终端的非激活时间内还是激活时间内。
第二方面，提供了一种确定候选资源集合的方法，执行该确定候选资源集合的方法的通信装置可以为第一终端；也可以为应用于第一终端中的模块，例如芯片或芯片系统。下面以执行主体为第一终端为例进行描述。该方法包括：排除第一候选资源集合中满足第一预设条件的候选资源，确定第二候选资源集合，该第一候选资源集合为资源选择窗内的候选资源的集合，该候选资源包括第一时间单元对应的至少一个频域单元，该第一时间单元为该资源选择窗内的多个时间单元中的一个，该第一候选资源集合包括至少一个第一候选资源，该第一候选资源为该资源选择窗内位于第二终端的激活时间内的候选资源，该第一预设条件包括与第二侧行链路控制信息指示的资源有重叠，并且对应的参考信号接收功率RSRP的测量值大于或等于第一临界值，该第二侧行链路控制信息为该第一终端在资源感知窗内接收到的侧行链路控制信息；根据该第二候选资源集合中的候选资源的数量，以及该第二候选资源集合中第一候选资源的数量，确定第三候选资源集合，该第三候选资源集合包括至少一个第一候选资源，该第三候选资源集合中的候选资源的数量大于或等于第一阈值。
基于上述第二方面提供的方法，第一终端排除第一候选资源集合中满足第一预设条件的候选资源，确定第二候选资源集合后，可以根据第二候选资源集合中的候选资 源的数量，以及第二候选资源集合中第一候选资源的数量，确定第三候选资源集合，使得第三候选资源集合包括至少一个第一候选资源，并且第三候选资源集合中候选资源的数量大于或等于第一阈值。
在一种可能的实现方式中，若第二候选资源集合中的候选资源的数量小于该第一阈值，并且该第二候选资源集合中的第一候选资源的数量小于第二阈值，则确定第三候选资源集合，包括：选择被排除的候选资源中的至少一个第一候选资源，确定为该第三候选资源集合中的候选资源。基于上述方法，在第二候选资源集合中的候选资源的数量小于该第一阈值，并且该第二候选资源集合中的第一候选资源的数量小于第二阈值的情况下，第一终端可以将被排除的候选资源中的至少一个第一候选资源，确定为第三候选资源集合中的候选资源，使得第三候选资源集合包括至少一个第一候选资源，并且第三候选资源集合中候选资源的数量大于或等于第一阈值。
在一种可能的实现方式中，该至少一个第一候选资源为在该被排除的第一候选资源中随机确定的；或者，将该被排除的第一候选资源按照RSRP测量值从高到低的顺序选择的M个第一候选资源，确定为该第三候选资源集合中的候选资源，M为正整数。基于上述方法，第一终端可以在被排除的第一候选资源中随机确定至少一个第一候选资源，并将随机确定的第一候选资源确定为第三候选资源集合中的候选资源，使得第三候选资源集合包括至少一个第一候选资源，并且第三候选资源集合中候选资源的数量大于或等于第一阈值。另外，在被排除的候选资源中随机确定第一候选资源可以使得干扰随机化，而且实现起来较为简单。或者，第一终端可以将被排除的第一候选资源中RSRP测量值最高的M个第一候选资源，确定为第三候选资源集合中的候选资源，使得第三候选资源集合包括至少一个第一候选资源，并且第三候选资源集合中候选资源的数量大于或等于第一阈值。可以理解的，按照RSRP测量值从高到低的顺序选择第一候选资源，可以使得低干扰的候选资源优先被选择。由于使用低干扰的资源传输数据比使用高干扰的资源传输数据的成功率更高，所以按照RSRP测量值从高到低的顺序选择第一候选资源可以提高数据传输的可靠性。
在一种可能的实现方式中，若第二候选资源集合中的候选资源的数量小于该第一阈值，并且该第二候选资源集合中的第一候选资源的数量小于第二阈值，则确定第三候选资源集合，包括：排除该第一候选资源集合中满足第二预设条件的候选资源，确定该第三候选资源集合，该第二预设条件包括位于第二终端的激活时间内，与该第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第二临界值，以及位于该第二终端的非激活时间内，与该第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第一临界值，该第二临界值大于该第一临界值。基于上述方法，若第二候选资源集合中的候选资源的数量小于该第一阈值，并且该第二候选资源集合中的第一候选资源的数量小于第二阈值，则第一终端可以通过提高位于第二终端的激活时间内的候选资源对应的RSRP阈值的方法，重新在第一候选资源集合中排除候选资源，使得第三候选资源集合包括至少一个第一候选资源，并且第三候选资源集合中候选资源的数量大于或等于第一阈值。
在一种可能的实现方式中，若第二候选资源集合中的候选资源的数量小于该第一阈值，并且该第二候选资源集合中的第一候选资源的数量大于或等于第二阈值，该确 定第三候选资源集合，包括：排除该第一候选资源集合中满足第三预设条件的候选资源，确定该第三候选资源集合，该第三预设条件包括与该第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第三临界值，该第三临界值大于该第一临界值。基于上述方法，若第二候选资源集合中的候选资源的数量小于该第一阈值，并且该第二候选资源集合中的第一候选资源的数量大于或等于第二阈值，则第一终端可以通过提高RSRP阈值的方法，重新在第一候选资源集合中排除候选资源，使得第三候选资源集合包括至少一个第一候选资源，并且第三候选资源集合中候选资源的数量大于或等于第一阈值。
在一种可能的实现方式中，若第二候选资源集合中的候选资源的数量大于或等于该第一阈值，并且该第二候选资源集合中的第一候选资源的数量小于第二阈值，则确定第三候选资源集合，包括：排除该第一候选资源集合中满足第四预设条件的候选资源，确定该第三候选资源集合；该第四预设条件包括位于该第二终端的非激活时间内，与该第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于该第一临界值，或者，该第四预设条件包括位于该第二终端的激活时间内，并且与该第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第四临界值，以及位于该第二终端的非激活时间内，并且与该第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于该第一临界值，该第四临界值大于该第一临界值。基于上述方法，在第二候选资源集合中的候选资源的数量大于或等于第一阈值，并且第二候选资源集合中的第一候选资源的数量小于第二阈值的情况下，第一终端可以对第一候选资源集合中的第二候选资源(资源选择窗内位于第二终端的非激活时间内的候选资源)进行排除，而不排除第一候选资源，使得第三候选资源集合包括至少一个第一候选资源，并且第三候选资源集合中候选资源的数量大于或等于第一阈值。或者，第一终端可以通过提高位于第二终端的激活时间内的候选资源对应的RSRP阈值的方法，重新在第一候选资源集合中排除候选资源，使得第三候选资源集合包括至少一个第一候选资源，并且第三候选资源集合中候选资源的数量大于或等于第一阈值。
在一种可能的实现方式中，若第二候选资源集合中的候选资源的数量大于或等于该第一阈值，并且该第二候选资源集合中的第一候选资源的数量小于第二阈值，则确定第三候选资源集合，包括：确定该第一候选资源集合中的至少一个第一候选资源为第三候选资源集合中的候选资源。基于上述方法，在第二候选资源集合中的候选资源的数量大于或等于该第一阈值，并且该第二候选资源集合中的第一候选资源的数量小于第二阈值的情况下，第一终端可以将第一候选资源集合中的至少一个第一候选资源，确定为第三候选资源集合中的候选资源，使得第三候选资源集合包括至少一个第一候选资源，并且第三候选资源集合中候选资源的数量大于或等于第一阈值。
第三方面，提供了一种确定候选资源集合的方法，执行该确定候选资源集合的方法的通信装置可以为第一终端；也可以为应用于第一终端中的模块，例如芯片或芯片系统。下面以执行主体为第一终端为例进行描述。该方法包括：确定第一候选资源集合，该第一候选资源集合为资源选择窗内的候选资源的集合，该候选资源包括第一时间单元对应的至少一个频域单元，该第一时间单元为该资源选择窗内的多个时间单元 中的一个，该第一候选资源集合包括至少一个第一候选资源，该第一候选资源为该资源选择窗内位于第二终端的激活时间内的候选资源；排除该第一候选资源集合中满足第一条件的候选资源，确定第二候选资源集合，该第一条件包括位于该第二终端的非激活时间内，并且与第一侧行链路控制信息指示的资源有重叠；该第一侧行链路控制信息为假设该第一终端在资源感知窗内没有监听的时间单元上监听到的侧行链路控制信息。
基于上述第三方面提供的方法，第一终端在排除第一候选资源集合中的候选资源时，不排除位于第二终端的激活时间内的候选资源。如此，可以使得第二候选资源集合中包括位于第二终端的激活时间内的候选资源，以便第二终端可以接收到第一终端发送的数据。
在一种可能的实现方式中，该方法还包括：排除该第二候选资源集合中满足第二条件的候选资源，确定第三候选资源集合；该第二条件包括位于该第二终端的非激活时间内，并且与第二侧行链路控制信息指示的资源有重叠，并且对应的参考信号接收功率大于或等于第一临界值，该第二侧行链路控制信息为该第一终端在该资源感知窗内接收到的侧行链路控制信息。基于上述方法，第一终端在排除第二候选资源集合中的候选资源时，不排除位于第二终端的激活时间内的候选资源。如此，可以使得第三候选资源集合中包括位于第二终端的激活时间内的候选资源，以便第二终端可以接收到第一终端发送的数据。
第四方面，提供了一种确定候选资源集合的方法，执行该确定候选资源集合的方法的通信装置可以为第一终端；也可以为应用于第一终端中的模块，例如芯片或芯片系统。下面以执行主体为第一终端为例进行描述。该方法包括：确定第一候选资源集合和第二候选资源集合，该第一候选资源集合为资源选择窗内第二终端的激活时间内的候选资源的集合，该第二候选资源集合为该资源选择窗内的候选资源的集合，或者，该第二候选资源集合为该资源选择窗内该第二终端的非激活时间内的候选资源的集合，或者，该第二候选资源集合为第一时间窗内的候选资源的集合，该第一时间窗的起始位置为该资源选择窗内该第二终端的激活时间的起始位置，该第一时间窗的结束位置为该资源选择窗的结束位置；从该第一候选资源集合中选择候选资源，得到第三候选资源集合；从该第二候选资源集合中选择候选资源，得到第四候选资源集合。
基于上述第四方面提供的方法，第一终端可以确定第一候选资源集合和第二候选资源集合，分别在第一候选资源集合和第二候选资源集合中选择候选资源，得到第三候选资源集合和第四候选资源集合。如此，可以使得第一候选资源集合中的候选资源在第三候选资源集合中占据一定比例，使得第二候选资源集合中的候选资源在第四候选资源集合中占据一定比例，以便第一终端选择可用的传输资源。
在一种可能的实现方式中，从该第一候选资源集合中选择候选资源，得到第三候选资源集合，包括：排除该第一候选资源集合中满足第一条件的候选资源，确定第五候选资源集合，该第一条件包括与第一侧行链路控制信息指示的资源有重叠，该第一侧行链路控制信息是假设该第一终端在资源感知窗内没有监听的时间单元上监听到的侧行链路控制信息；排除该第五候选资源集合中满足第二条件的候选资源，确定该第三候选资源集合，该第二条件包括与第二侧行链路控制信息指示的资源有重叠，并且 对应的参考信号接收功率RSRP的测量值大于等于第一临界值，该第二侧行链路控制信息为该第一终端在该资源感知窗内接收到的侧行链路控制信息。基于上述方法，第一终端可以从第一候选资源集合中选择候选资源，得到第三候选资源集合。
在一种可能的实现方式中，排除该第一候选资源集合中满足第一条件的候选资源，确定第五候选资源集合，包括：排除该第一候选资源集合中满足该第一条件的候选资源，确定第一中间集合；若该第一中间集合中候选资源的数量小于第一阈值，则将该第一候选资源集合确定为该第五候选资源集合。基于上述方法，第一终端可以确定第五候选资源集合。
在一种可能的实现方式中，该第一阈值为第一比例与该第一候选资源集合中候选资源的数量之积，该第一比例大于或等于0并且小于1。基于上述方法，第一终端可以确定第一阈值。
在一种可能的实现方式中，排除该第五候选资源集合中满足第二条件的候选资源，确定该第三候选资源集合，包括：排除该第五候选资源集合中满足该第二条件的候选资源，确定第二中间集合；若该第二中间集合中候选资源的数量小于第二阈值，则排除该第五候选资源集合中满足第三条件的候选资源，确定该第三候选资源集合，该第三条件包括与该第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于等于第二临界值，该第二临界值大于该第一临界值。基于上述方法，第一终端可以确定第三候选资源集合。
在一种可能的实现方式中，该第二阈值为第二比例与该第一候选资源集合中候选资源的数量之积，该第二比例大于或等于0并且小于1。基于上述方法，第一终端可以确定第二阈值。
在一种可能的实现方式中，该第一比例和该第二比例是独立配置的。基于上述方法，第一比例和第二比例可以相同也可以不同，可以根据需要配置第一比例和第二比例。
在一种可能的实现方式中，从该第二候选资源集合中选择候选资源，得到第四候选资源集合，包括：排除该第二候选资源集合中满足该第一条件的候选资源，确定第六候选资源集合；排除该第六候选资源集合中满足该第二条件的候选资源，确定该第四候选资源集合。基于上述方法，第一终端可以从第二候选资源集合中选择候选资源，得到第四候选资源集合。
在一种可能的实现方式中，排除该第二候选资源集合中满足该第一条件的候选资源，确定第六候选资源集合，包括：排除该第二候选资源集合中满足该第一条件的候选资源，确定第三中间集合；若该第三中间集合中候选资源的数量小于第三阈值，则将该第二候选资源集合确定为该第六候选资源集合。基于上述方法，第一终端可以确定第六候选资源集合。
在一种可能的实现方式中，该第三阈值为第三比例与该第二候选资源集合中候选资源的数量之积，该第三比例大于或等于0并且小于1。基于上述方法，第一终端可以确定第三阈值。
在一种可能的实现方式中，排除该第六候选资源集合中满足该第二条件的候选资源，确定该第四候选资源集合，包括：排除该第六候选资源集合中满足该第二条件的 候选资源，确定第四中间集合；若该第四中间集合中候选资源的数量小于第四阈值，则排除该第六候选资源集合中满足第四条件的候选资源，确定该第四候选资源集合，该第四条件包括与该第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于等于第三临界值，该第三临界值大于该第一临界值。基于上述方法，第一终端可以确定第四候选资源集合。
在一种可能的实现方式中，该第四阈值为第四比例与该第二候选资源集合中候选资源的数量之积，该第四比例大于或等于0并且小于1。基于上述方法，第一终端可以确定第四阈值。
在一种可能的实现方式中，该第三比例与该第四比例是独立配置的。基于上述方法，第三比例与第四比例可以相同也可以不同，可以根据需要配置第三比例与第四比例。
在一种可能的实现方式中，该第一比例和该第三比例是单独配置的，和/或，该第二比例和该第四比例是单独配置的。基于上述方法，第一候选资源集合中的候选资源与第二候选资源集合中的候选资源受到干扰的程度可能不同，因此，第一比例和第三比例是单独配置的，和/或，第二比例和第四比例是单独配置的。或者说，第一比例和第三比例可以相同或不同，和/或，第二比例和第四比例可以相同或不同。
在一种可能的实现方式中，该第三候选资源集合中候选资源和该第四候选资源集合中候选资源的数量的总和大于或等于第五阈值，该第五阈值是第五比例与该第一候选资源集合中候选资源以及该第二候选资源集合中候选资源的数量的总和的乘积。基于上述方法，可以使得第三候选资源集合中候选资源和第四候选资源集合中候选资源在第一候选资源集合中候选资源以及第二候选资源集合中候选资源中占据一定比例，使得第一终端有选择资源的余地。
第五方面，提供了一种确定候选资源集合的方法，执行该确定候选资源集合的方法的通信装置可以为第一终端；也可以为应用于第一终端中的模块，例如芯片或芯片系统。下面以执行主体为第一终端为例进行描述。该方法包括：获取第一资源集合，该第一资源集合包括至少一个第一资源，该第一资源用于该第一终端向第二终端发送第一数据，该第一数据在该第一终端的多个逻辑信道对应的数据中、优先级最高，该第一资源为位于该第二终端的激活时间内的候选资源；获取第二数据，该第二数据的优先级高于该第一数据的优先级，该第二数据为该第一终端向第三终端发送的数据，该第三终端与该第二终端不同；根据该第一资源集合和该第三终端的激活时间，确定接收数据的终端。
基于上述第五方面提供的方法，第一终端在获取了第一数据对应的第一资源集合，获取了优先级高于第一数据的第二数据后，可以根据第一资源集合中的资源与第三终端的激活时间，确定接收数据的终端，使得第一终端可以合理安排发送数据的顺序。
在一种可能的实现方式中，根据该第一资源集合和该第三终端的激活时间，确定接收数据的终端，包括：若该第一资源集合中的第一个资源位于该第三终端的激活时间内，则使用该第一个资源向该第三终端发送该第二数据；或者，若该第一资源集合中的第一个资源没有位于该第三终端的激活时间内，则使用该第一个资源向该第二终端发送该第一数据；或者，若该第一资源集合中的第一个资源没有位于该第三终端的 激活时间内，则使用该第一个资源向第四终端发送第三数据，该第三数据对应的优先级在该第一个资源上处于激活时间的多个接收终端对应的待发送的数据中最高；或者，若该第一资源集合中的第一个资源没有位于该第三终端的激活时间内，并且该第一资源集合中有资源位于该第三终端的激活时间内，则使用第一资源集合中的资源向该第三终端发送该第二数据；或者，若该第一资源集合中的资源没有位于该第三终端的激活时间内，则通过该第一个资源向第四终端发送第三数据，该第三数据对应的优先级在该第一个资源上处于激活时间的多个接收终端对应的待发送的数据中最高。基于上述方法，第一终端可以通过上述多种方式确定接收数据的终端，提高了第一终端确定接收数据的终端的灵活性和多样性。
在一种可能的实现方式中，获取第一资源集合，包括：获取候选资源集合，根据第二终端的激活时间在候选资源集合中选择候选资源，得到该第一资源集合；该方法还包括：根据第三终端的激活时间在该候选资源集合中选择候选资源，得到第二资源集合，该第二资源集合中的资源位于该第三终端的激活时间内。基于上述方法，第一终端可以根据第三终端的激活时间重新创建一个sidelink grant，或者为sidelink grant重新在候选资源集合中选择为第三终端初传或重传的资源，使得优先级最高的数据(即第二数据)可以优先发送，避免增加高优先级业务的时延。
第六方面，提供了一种通信装置用于实现上述方法。该通信装置可以为上述第一方面中的第一终端，或者包含上述第一终端的装置；或者，该通信装置可以为上述第二方面中的第一终端，或者包含上述第一终端的装置；或者，该通信装置可以为上述第三方面中的第一终端，或者包含上述第一终端的装置；或者，该通信装置可以为上述第四方面中的第一终端，或者包含上述第一终端的装置；或者，该通信装置可以为上述第五方面中的第一终端，或者包含上述第一终端的装置。该通信装置包括实现上述方法相应的模块、单元、或手段(means)，该模块、单元、或means可以通过硬件实现，软件实现，或者通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块或单元。
结合上述第六方面，在一种可能的实现方式中，该通信装置可以包括处理模块。该处理模块，可以用于实现上述任一方面及其任意可能的实现方式中的处理功能。该处理模块例如可以为处理器。
第七方面，提供了一种通信装置，包括：处理器；该处理器用于与存储器耦合，并读取存储器中的指令之后，根据该指令执行如上述任一方面所述的方法。该通信装置可以为上述第一方面中的第一终端，或者包含上述第一终端的装置；或者，该通信装置可以为上述第二方面中的第一终端，或者包含上述第一终端的装置；或者，该通信装置可以为上述第三方面中的第一终端，或者包含上述第一终端的装置；或者，该通信装置可以为上述第四方面中的第一终端，或者包含上述第一终端的装置；或者，该通信装置可以为上述第五方面中的第一终端，或者包含上述第一终端的装置。
结合上述第七方面，在一种可能的实现方式中，该通信装置还包括存储器，该存储器，用于保存必要的程序指令和数据。
结合上述第七方面，在一种可能的实现方式中，该通信装置为芯片或芯片系统。可选的，该通信装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器 件。
第八方面，提供了一种通信装置，包括：处理器和接口电路；接口电路，用于接收计算机程序或指令并传输至处理器；处理器用于执行所述计算机程序或指令，以使该通信装置执执行如上述任一方面所述的方法。
结合上述第八方面，在一种可能的实现方式中，该通信装置为芯片或芯片系统。可选的，该通信装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件。
第九方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机可以执行上述任一方面所述的方法。
第十方面，提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机可以执行上述任一方面所述的方法。
其中，第六方面至第十方面中任一种可能的实现方式所带来的技术效果可参见上述第一方面至第五方面中任一方面或任一方面中不同可能的实现方式所带来的技术效果，此处不再赘述。
附图说明
图1为本申请实施例提供的DRX周期的示意图；
图2为本申请实施例提供的候选单个时隙资源的示意图；
图3为本申请实施例提供的通信系统架构示意图；
图4为本申请实施例提供的通信装置的硬件结构示意图；
图5为本申请实施例提供的确定候选资源集合的方法的流程示意图一；
图6为本申请实施例提供的第一时间窗的示意图；
图7为本申请实施例提供的第二终端的激活时间和非激活时间的示意图；
图8为本申请实施例提供的第二终端的激活时间和PSCCH的时域位置的示意图；
图9为本申请实施例提供的确定候选资源集合的方法的流程示意图二；
图10为本申请实施例提供的确定候选资源集合的方法的流程示意图三；
图11为本申请实施例提供的确定候选资源集合的方法的流程示意图四；
图12为本申请实施例提供的数据传输方法的流程示意图；
图13为本申请实施例提供的通信装置的结构示意图。
具体实施方式
首先，为了便于理解本申请实施例的技术方案，对本申请实施例涉及的技术术语进行解释说明。
1、资源池
资源池可以理解为一个时频资源集合。具体而言，资源池可以为侧行链路(sidelink，SL)中终端用于传输物理层侧行链路共享信道(physical sidelink shared channel，PSSCH)的时频资源集合。通常，一个终端可以被配置一个或多个资源池。
2、优先级
SCI可以分为两级。第一级SCI承载于物理层侧行链路控制信道(physical sidelink control channel，PSCCH)中，第二级SCI承载于PSSCH中。其中，第一级SCI中包 含优先级字段。该字段可以用于指示SCI调度的数据的优先级。通常，优先级字段的取值范围为1-8，1表示最高优先级，8表示最低优先级，优先级字段的取值越小，SCI调度的数据的优先级越高。
3、资源感知窗
资源感知窗也可以称为感知窗(sensing window)。终端可以在感知窗内监听，以获取感知结果。感知结果可以包括SCI解码结果(或PSCCH解码结果)和参考信号接收功率(reference signal received power，RSRP)测量结果。
4、资源选择窗(resource selection window，RSW)
终端可以根据感知结果在RSW进行资源选择，以确定用于数据传输的资源。
5、DRX
若终端被配置了DRX功能，则终端在一个DRX周期内的部分时间为激活时间，部分时间为非激活时间。在激活时间内终端可以监听SCI，如两级SCI，在非激活时间内终端不监听SCI，以达成节能的目的。可以理解的，当监听SCI的时间缩短时，终端可以进一步节能。
其中，激活时间可以包括以下至少一项：持续时间定时器(on-DurationTimer)的运行时间，不活动定时器(Inactivity timer)的运行时间，混合自动重传请求往返时间定时器(HARQ RTT timer)的运行时间、重传定时器(Retransmission timer)的运行时间或终端为了接收信道状态信息(channel state information，CSI)报告(CSI report)的时间。
其中，一个DRX周期可以包括持续时间(ON duration)和可能的关闭持续时间(possible OFF duration)。终端可以使用on-DurationTimer维护激活时间。终端接收到调度一个新的SL传输的SCI，可以开启一个Inactivity timer，终端在Inactivity timer运行时处于激活时间。对于混合自动重传请求(hybrid automatic repeat request，HARQ)使能的传输，终端在物理侧行链路反馈信道(physical sidelink feedback channel，PSFCH)传输的结束符号/时隙后开启SL HARQ RTT timer。若发送终端没有发送PSFCH，则接收终端在PSFCH资源的结束符号/时隙后开启SL HARQ RTT timer。HARQ RTT timer的运行时间内，终端处于激活时间。当HARQ RTT timer到期则终端可以开启Retransmission timer。终端在Retransmission timer运行时间处于激活时间，以监听PSCCH和PSSCH中的第二级SCI，以便于终端接收重传。若终端发送了CSI请求(CSI request)消息，则需要接收CSI report，为了接收CSI report的时间为激活时间。持续时间、可能的关闭持续时间和不活动定时器的运行时间之间的关系可以如图1所示。
本申请实施例中，激活时间可以是当前激活时间(current active time)，或者激活时间可以是current active time和将来激活时间(future active time)。其中，current active time是发送终端的媒体接入控制(media access control，MAC)层触发资源选择的时刻的接收终端的激活时间。future active time可以理解为接收终端为了接收重传而处于的激活时间。例如，接收终端根据接收的SCI所指示的资源获知重传资源所在时间单元，即使当前接收终端在重传资源所在的时间单元处于非激活时间，在知道要在重传资源所在时间单元接收重传后，接收终端可以为了接收重传在重传资源所在时间单元处于激活时间，此时的激活时间可以理解为future active time。
如背景技术中所述，终端可以采用资源分配方式2确定传输资源，具体过程请参考下文描述。
在资源分配方式2下，终端的高层，如：终端的MAC层，可以要求终端的物理(physical，PHY)层进行资源选择，以确定一个候选资源集合。如此，终端的高层可以在该候选资源集合中选择资源用于传输PSCCH或PSSCH，即终端的高层确定了传输资源。为了触发终端的物理层进行资源选择，终端的高层可以向终端的物理层指示以下至少一个参数：候选资源集合中的候选资源所在的资源池，层1优先级prio TX，剩余数据包时延预算(packet delay budget，PDB)，一个时间单元内用于PSCCH或PSSCH传输的频域单元个数L subCH或资源预留周期P rsvp_TX。
其中，资源池的时间单元集合可以为
Figure PCTCN2022128572-appb-000001
资源预留周期的单位是毫秒(ms)。通常资源预留周期的单位还需要从毫秒转换成逻辑时间单元。例如，可以通过如下公式将资源预留周期的单位从毫秒转换为逻辑时间单元：
Figure PCTCN2022128572-appb-000002
其中，P rsvp_TX是以毫秒为单位的资源预留周期，P′ rsvp_TX是以逻辑时间单元为单位的资源预留周期。T′ max是资源池内的时间单元的个数。
Figure PCTCN2022128572-appb-000003
表示向上取整。
本申请实施例中，时间单元是时域上的单位，可以包括至少一个时隙、至少一个符号、至少一个子帧、绝对时间、毫秒等。频域单元是频域上的单位，可以包括至少一个信道、至少一个子信道、至少一个载波、至少一个子载波或至少一个资源块(resource block，RB)等。在此做出统一说明，后面不再赘述。
本申请实施例中，MAC层可以理解为MAC层实体，或者说，MAC层可以替换为MAC层实体。类似的，物理层可以理解为物理层实体，或者说，物理层可以替换为物理层实体。在此做出统一说明，后面不再赘述。
可以理解的，终端的物理层获取到上述参数后，可以进行资源选择，具体的，可以参考下述S1-S10。
S1：终端的物理层确定资源选择窗。
其中，资源选择窗的时间区间可以是[n+T 1,n+T 2]。T 1的取值满足
Figure PCTCN2022128572-appb-000004
的单位可以是时隙，可以表示终端处理感知结果(如SCI解码结果和RSRP测量结果)的时间。SL带宽部分(bandwidth part，BWP)的子载波间隔(subcarrier spacing)不同，
Figure PCTCN2022128572-appb-000005
的取值不同。例如，
Figure PCTCN2022128572-appb-000006
与SL BWP的子载波间隔的关系可以如表1所示。表1中，若SL BWP的子载波间隔μ SL为0，则
Figure PCTCN2022128572-appb-000007
为3个时隙；若μ SL为1，则
Figure PCTCN2022128572-appb-000008
为5个时隙；若μ SL为2，则
Figure PCTCN2022128572-appb-000009
为9个时隙；若μ SL为3，则
Figure PCTCN2022128572-appb-000010
为17个时隙。
表1
Figure PCTCN2022128572-appb-000011
T 2的取值大于等于T 2min，并且小于等于剩余PDB。作为一种示例，若T 2min的取值 小于剩余PDB，则T 2的取值可以由终端确定，但是T 2的取值要满足大于等于T 2min，并且小于等于剩余PDB。若T 2min的取值大于等于剩余PDB，则T 2的取值与剩余PDB相同。其中，T 2min的取值和优先级相关联。该优先级可以为终端要发送的数据的优先级和/或前文所述的层1优先级。T 2min的取值和优先级的关联关系可以由网络设备配置。作为一种示例，T 2min的取值可以为1个时隙、5个时隙、10个时隙或20个时隙。
S2：终端的物理层确定候选单个时间单元资源集合。
其中，候选单个时间单元资源集合可以包括多个候选单个时间单元资源。一个候选单个时间单元资源可以记为R x,y。x表示该候选单个时间单元资源在频域上的索引，y表示该候选单个时间单元资源在时域上的索引。若候选单个时间单元资源集合中的资源所在的资源池的时间单元集合为
Figure PCTCN2022128572-appb-000012
则R xy可以表示时间单元
Figure PCTCN2022128572-appb-000013
下的连续的L subCH个频域单元。该连续的L subCH个频域单元的索引可以分别为x+j，j＝0,1，…，L subCH-1。
一种可能的实现方式，候选单个时间单元资源集合包括资源池内、在资源选择窗下的全部候选单个时间单元资源。
示例性的，以时间单元为时隙，频域单元为子信道为例，若L subCH为7个子信道，资源池的频域包括10个子信道，则资源选择窗中的时隙1包括的候选单个时隙资源可以如图2所示。在图2中，时隙1可以包括4个候选单个时隙资源，分别为R 0,1，R 1,1，R 2,1和R 3,1。其中，R 0,1表示时域位置是时隙1，频域位置为子信道0-子信道6的资源；R 1,1表示时域位置是时隙1，频域位置为子信道1-子信道7的资源；R 2,1表示时域位置是时隙1，频域位置为子信道2-子信道8的资源；R 3,1表示时域位置是时隙1，频域位置为子信道3-子信道9的资源。可以理解的，若资源选择窗包括5个时隙，则候选单个时隙资源集合包括4*5＝20个候选单个时隙资源。
S3：终端的物理层确定资源感知窗。
其中，资源感知窗的区间可以为
Figure PCTCN2022128572-appb-000014
其中，T 0可以是无线资源控制(radio resource control，RRC)配置的。SL BWP的子载波间隔不同，
Figure PCTCN2022128572-appb-000015
的取值不同。例如，
Figure PCTCN2022128572-appb-000016
与SL BWP的子载波间隔的关系可以如表2所示。表2中，若SL BWP的子载波间隔μ SL为0，则
Figure PCTCN2022128572-appb-000017
为1个时隙；若μ SL为1，则
Figure PCTCN2022128572-appb-000018
为1个时隙；若μ SL为2，则
Figure PCTCN2022128572-appb-000019
为2个时隙；若μ SL为3，则
Figure PCTCN2022128572-appb-000020
为4个时隙。
表2
Figure PCTCN2022128572-appb-000021
可以理解的，终端的物理层确定了资源感知窗后，可以在资源感知窗内进行监听，获取SCI解码结果和RSRP测量结果。后续，终端的物理层可以根据SCI解码结果和 RSRP测量结果在候选单个时间单元资源集合中选择资源。
S4：终端的物理层确定临界值A。
其中，临界值A为RSRP的阈值，可以记为Th(p i,p j)。p i可以表示在感知窗中监听到的SCI指示的优先级，p j可以表示前文所述的层1优先级。
作为一种示例，临界值A为RRC配置的参数SL-ThresRSRP_p i_p j中的第k个值。其中，k满足公式k＝p i+(p j-1)*8。
S5：终端的物理层确定候选资源集合A。
一种可能的实现方式，终端的物理层将候选单个时间单元资源集合确定为候选资源集合A。
S6：终端的物理层排除候选资源集合A中满足条件A的候选资源，确定候选资源集合B。
其中，条件A包括与第一SCI指示的资源有重叠。其中，第一SCI为假设终端在资源感知窗内没有监听的时间单元上监听到的SCI。第一SCI指示的频域资源为资源池内全部频域单元，第一SCI指示的资源预留周期为配置在资源池上的资源预留周期中的一个。也就是说，条件A是针对终端的物理层在资源感知窗口内没有监听的时间单元来说的，假设终端的物理层在没有监听的时间单元上监听到了第一SCI，并且候选资源集合A中的某个候选资源与第一SCI指示的资源有重叠，则将该候选资源排除掉，即候选资源集合B中不包括该候选资源。其中，第一SCI指示的资源根据假设接收到第一SCI的时隙和第一SCI指示的资源预留周期以及第一级SCI指示的频域资源确定。
本申请实施例中，两个资源有重叠可以理解为该两个资源完全重叠或该两个资源部分重叠。两个资源部分重叠可以理解为一个资源位于另一个资源内，或一个资源的一部分与另一个资源的一部分重叠，在此做出统一说明，后面不再赘述。
S7：终端的物理层确定候选资源集合C。
一种可能的实现方式，若候选资源集合B中的候选资源的数量小于阈值A，则将候选资源集合A确定为候选资源集合C；若候选资源集合B中的候选资源的数量大于等于阈值A，则将候选资源集合B确定为候选资源集合C。
其中，阈值A为比例A与候选资源集合A中候选资源的数量之积。比例A大于0并且小于1。
S8：终端的物理层排除候选资源集合C中满足条件B的候选资源，确定候选资源集合D。
其中，条件B包括与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于临界值A。第二SCI为终端的物理层在资源感知窗内接收到的SCI。也就是说，条件B是针对终端的物理层在资源感知窗口内监听到了第二SCI来说的，若终端的物理层在资源感知窗内监听到了第二SCI，并且候选资源集合C中的某个候选资源与第二SCI指示的资源有重叠，并且该候选资源对应的RSRP的测量值大于或等于临界值A，则将该候选资源排除掉，即候选资源集合D中不包括该候选资源。可以理解的，被排除的候选资源为高干扰的资源。
本申请实施例中，RSRP的测量值可以是基于PSCCH解调参考信号(demodulation  reference signal，DMRS)或PSSCH DMRS测量得到的。该候选资源对应的RSRP的测量值可以理解为和候选资源重叠的第二SCI所指示的资源对应的RSRP测量值。
作为一种示例，候选资源集合C中的候选资源满足如下(1)-(3)中所示的内容时，终端的物理层排除该候选资源。
(1)终端的物理层在监听时间单元
Figure PCTCN2022128572-appb-000022
接收到了第二SCI，第二SCI，第二SCI包括资源预留周期字段和优先级字段，资源预留周期字段指示了P rsvp_RX，优先级字段指示了prio RX。其中，上述S4中的p i可以为prio RX。
(2)RSRP的测量值大于等于阈值A。
(3)终端的物理层在监听时间单元
Figure PCTCN2022128572-appb-000023
接收到了第二SCI，或者若第二SCI中指示了资源预留周期字段，则终端的物理层预计在时间单元
Figure PCTCN2022128572-appb-000024
可以接收到相同的SCI，确定了第二SCI所指示的频域单元集合和时间单元集合，与
Figure PCTCN2022128572-appb-000025
有重叠。
其中，q＝1,2，…，Q，j＝0,1，…，C resel-1。P′ rsvp_RX是P rsvp_RX从毫秒为单位转换成以逻辑时间单元为单位的资源预留周期。若P rsvp_RX＜T scal并且n′-m≤P′ rsvp_RX，时间单元n属于集合
Figure PCTCN2022128572-appb-000026
则
Figure PCTCN2022128572-appb-000027
否则时间单元
Figure PCTCN2022128572-appb-000028
是时间单元n后属于
Figure PCTCN2022128572-appb-000029
的第一个时间单元，
Figure PCTCN2022128572-appb-000030
否则Q＝1。T scal是将T 2的单位从时间单元转换为毫秒得到的。
S9：终端的物理层确定候选资源集合E。
一种可能的实现方式，若候选资源集合D中的候选资源的数量小于阈值A，则将临界值A增加3dB，重新执行S5-S9，得到候选资源集合E；若候选资源集合D中的候选资源的数量大于等于阈值A，则将候选资源集合D确定为候选资源集合E。
S10：终端的物理层向终端的MAC层发送候选资源集合E的信息，以向终端的MAC层指示候选资源集合E。
一种可能的实现方式，S10之后，终端的MAC层可以在候选资源集合E中选择资源用于传输PSCCH或PSSCH，即终端的MAC层确定了传输资源，或者说确定了PSCCH或PSSCH的可用资源。
通过以上介绍可以看出，发送终端在自己确定传输资源的情况下，无法使得确定的传输资源位于接收终端的激活时间内，会导致接收终端无法接收数据。为了解决上述问题，本申请实施例提供了确定候选资源集合的方法，该方法将在下述图5、图9、图10和图11所示的方法中介绍。
下面结合附图对本申请实施例的实施方式进行详细描述。
本申请实施例提供的方法可用于各种通信系统。例如该通信系统可以为长期演进(long term evolution，LTE)系统、第五代(5th generation，5G)通信系统、无线保真(wireless-fidelity，WiFi)系统、第三代合作伙伴计划(3rd generation partnership project，3GPP)相关的通信系统、未来演进的通信系统、或多种系统融合的系统等，不予限制。其中，5G还可以称为新无线(new radio，NR)。下面以图3所示通信系统30为例，对本申请实施例提供的方法进行描述。
如图3所示，为本申请实施例提供的通信系统30的架构示意图。图3中，通信系 统30可以包括一个或多个终端301和终端302。可选的，通信系统30还包括终端303。图3仅为示意图，并不构成对本申请提供的技术方案的适用场景的限定。
图3中，终端与其他终端之间可以通过直连通信链路相互通信。其中，终端与其他终端之间的直连通信链路可以称之为边链路或者侧行链路(sidelink，SL)。例如：以终端与其他终端之间的直连通信链路为侧行链路为例，图3中终端301可以通过侧行链路向终端302发送数据。可以理解的，终端301向终端302发送数据之前，可以采用前文所述的方法确定发送数据的传输资源。
本申请实施例中的终端，例如：终端301、终端302或终端303是一种具有无线收发功能的设备。终端可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。终端还可以称为终端设备，终端设备可以是用户设备(user equipment，UE)，其中，UE包括具有无线通信功能的手持式设备、车载设备、可穿戴设备或计算设备。示例性地，UE可以是手机(mobile phone)、平板电脑或带无线收发功能的电脑。终端设备还可以是虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制中的无线终端、无人驾驶中的无线终端、远程医疗中的无线终端、智能电网中的无线终端、智慧城市(smart city)中的无线终端、或智慧家庭(smart home)中的无线终端等等。本申请实施例中，用于实现终端的功能的装置可以是终端；也可以是能够支持终端实现该功能的装置，例如芯片系统，该装置可以被安装在终端中或者和终端匹配使用。本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。本申请实施例提供的方法中，以用于实现终端的功能的装置是终端为例，描述本申请实施例提供的方法。
作为示例而非限定，在本申请中，终端可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。例如，可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能的设备。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能的设备，例如：智能手表或智能眼镜等，以及包括只专注于某一类应用功能，需要和其它设备如智能手机配合使用的设备，如各类进行体征监测的智能手环、智能首饰等。
在本申请中，终端可以是物联网(internet of things，IoT)系统中的终端，IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。本申请中的终端可以是机器类型通信(machine type communication，MTC)中的终端。本申请的终端还可以是路边单元(road site unit，RSU)。本申请的终端可以是作为一个或多个部件或者单元而内置于车辆的车载模块、车载模组、车载部件、车载芯片或者车载单元，车辆通过内置的所述车载模块、车载模组、车载部件、车载芯片或者车载单元可以实施本申请的方法。因此，本申请实施例可以应用于车联网，例如车辆外联(vehicle to everything，V2X)、车间通信长期演进技术(long term evolution vehicle，LTE-V)、车到车(vehicle to vehicle，V2V)等。
图3所示的通信系统30仅用于举例，并非用于限制本申请的技术方案。本领域的技术人员应当明白，在具体实现过程中，通信系统30还可以包括其他设备，同时也可根据具体需要来确定终端的数量，不予限制。
可选的，本申请实施例图3中的各终端也可以称之为通信装置，其可以是一个通用设备或者是一个专用设备，本申请实施例对此不作具体限定。
可选的，本申请实施例图3中的各终端的相关功能可以由一个设备实现，也可以由多个设备共同实现，还可以是由一个设备内的一个或多个功能模块实现，本申请实施例对此不作具体限定。可以理解的是，上述功能既可以是硬件设备中的网络元件，也可以是在专用硬件上运行的软件功能，或者硬件与软件的结合，或者平台(例如，云平台)上实例化的虚拟化功能。
在具体实现时，图3所示的各终端都可以采用图4所示的组成结构，或者包括图4所示的部件。图4所示为可适用于本申请实施例的通信装置的硬件结构示意图。该通信装置40包括至少一个处理器401和至少一个通信接口404，用于实现本申请实施例提供的方法。该通信装置40还可以包括通信线路402和存储器403。
处理器401可以是一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本申请方案程序执行的集成电路。
通信线路402可包括一通路，在上述组件之间传送信息，例如总线。
通信接口404，用于与其他设备或通信网络通信。通信接口404可以是任何收发器一类的装置，如可以是以太网接口、无线接入网(radio access network，RAN)接口、无线局域网(wireless local area networks，WLAN)接口、收发器、管脚、总线、或收发电路等。
存储器403可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过通信线路402与处理器401相耦合。存储器403也可以和处理器401集成在一起。本申请实施例提供的存储器通常可以具有非易失性。
其中，存储器403用于存储执行本申请实施例提供的方案所涉及的计算机执行指令，并由处理器401来控制执行。处理器401用于执行存储器403中存储的计算机执行指令，从而实现本申请实施例提供的方法。或者，可选的，本申请实施例中，也可以是处理器401执行本申请下述实施例提供的方法中的处理相关的功能，通信接口404负责与其他设备或通信网络通信，本申请实施例对此不作具体限定。
可选的，本申请实施例中的计算机执行指令也可以称之为应用程序代码，本申请实施例对此不作具体限定。
本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。
作为一种实施例，处理器401可以包括一个或多个CPU，例如图4中的CPU0和CPU1。
作为一种实施例，通信装置40可以包括多个处理器，例如图4中的处理器401和处理器407。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
作为一种实施例，通信装置40还可以包括输出设备405和/或输入设备406。输出设备405和处理器401耦合，可以以多种方式来显示信息。例如，输出设备405可以是液晶显示器(liquid crystal display，LCD)，发光二级管(light emitting diode，LED)显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备406和处理器401耦合，可以以多种方式接收用户的输入。例如，输入设备406可以是鼠标、键盘、触摸屏设备或传感设备等。
可以理解的，图4中示出的组成结构并不构成对该通信装置的限定，除图4所示部件之外，该通信装置可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
下面将结合附图，对本申请实施例提供的确定候选资源集合的方法进行描述。下述实施例中的各网元可以具备图4所示部件，不予赘述。
需要说明的是，本申请实施例中各个网元之间的消息名字或消息中各参数的名字等只是一个示例，具体实现中也可以是其他的名字，本申请实施例对此不作具体限定。
需要说明的是，在本申请实施例中，“和/或”可以用于描述关联对象存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，其中A，B可以是单数或者复数。此外，类似于“A、B和C中的至少一项”或“A、B或C中的至少一项”的表述通常用于表示如下中任一项：单独存在A；单独存在B；单独存在C；同时存在A和B；同时存在A和C；同时存在B和C；同时存在A、B和C。以上是以A、B和C共三个元素进行举例来说明该项目的可选用条目，当表述中具有更多元素时，该表述的含义可以按照前述规则获得。
为了便于描述本申请实施例的技术方案，在本申请实施例中，可以采用“第一”、“第二”等字样对功能相同或相似的技术特征进行区分。该“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。在本申请实施例中，“示例性的”或者“例如”等词用于表示例子、例证或说明，被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念，便于理解。
需要说明的是，在本申请实施例中，对于一种技术特征，通过“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”等区分该种技术特征中的技术特征，该“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”描述的技术特征间无先后顺序或者大小顺序。
可以理解的，本申请实施例中同一个步骤或者具有相同功能的步骤或者技术特征 在不同实施例之间可以互相参考借鉴。
可以理解的，本申请实施例中，终端可以执行本申请实施例中的部分或全部步骤，这些步骤仅是示例，本申请实施例还可以执行其它步骤或者各种步骤的变形。此外，各个步骤可以按照本申请实施例呈现的不同的顺序来执行，并且有可能并非要执行本申请实施例中的全部步骤。
如图5所示，为本申请实施例提供的一种确定候选资源集合的方法，该方法包括S501-S503。
S501：第一终端确定第一候选资源集合。
一种可能的实现方式，第一终端的物理层确定第一候选资源集合。
其中，第一终端可以为图3所示通信系统30中的任一终端。例如，第一终端可以为终端301、终端302或终端303。第一候选资源集合为资源选择窗内的候选资源的集合。第一终端可以在资源选择窗中选择资源，用于传输PSCCH和/或PSSCH。由于资源选择窗内的资源有可能用于PSCCH和/或PSSCH的传输，所以资源选择窗内的资源可以称为候选资源。
其中，候选资源包括第一时间单元对应的至少一个频域单元。第一时间单元为资源选择窗内的多个时间单元中的一个。例如，候选资源包括一个时隙下的连续L subCH个子信道。
一种可能的实现方式，第一候选资源集合包括至少一个第一候选资源。其中，第一候选资源为资源选择窗内位于第二终端的激活时间内的候选资源。第二终端为与第一终端通信连接的终端，第一终端确定了用于向第二终端发送数据的可用资源后，可以通过该可用资源向第二终端发送数据。以图3所示的通信系统30为例，若第一终端为终端301，则第二终端可以为终端302或终端303。
一种可能的实现方式，第二终端的激活时间为MAC层触发物理层进行资源选择时，所指示的接收终端的激活时间。
一种可能的实现方式，第二终端的激活时间为MAC层触发物理层进行资源选择时，所指示的激活时间，也就是说，第二终端的激活时间可以替换为MAC层指示的激活时间。
一种可能的实现方式，第二终端的数量可以是一个或多个，此时第二终端的激活时间为一个或多个终端的激活时间的并集。
一种可能的实现方式，第一候选资源为资源选择窗内位于第二终端的激活时间内的候选资源，可以理解为第一候选资源为资源选择窗内的候选资源，并且第一候选资源与第二终端的激活时间在时域上有重叠，例如，第一候选资源包括的部分或全部时间单元位于第二终端的激活时间内。
可选的，第一候选资源集合还包括第二候选资源。其中，第二候选资源为资源选择窗内位于第二终端的非激活时间内的候选资源。也就是说，第二候选资源为资源选择窗内的候选资源，并且第二候选资源与第二终端的非激活时间在时域上有重叠，例如，第二候选资源包括的部分或全部时间单元位于第二终端的非激活时间内。
一种可能的实现方式，资源选择窗的时域起始位置为n+T 1，资源选择窗的时域结束位置为n+T 2，或者，资源选择窗的时域起始位置为n+T 3，资源选择窗的时域结束 位置为n+T 2。
其中，第一终端在时间单元n被触发进行资源选择。T 1和T 2是正整数，或者T 1和T 2的介绍可以参考前文S1中所述，在此不做赘述。T 3为在n+T 1之后，第二终端的激活时间的时域起始位置。
一种可能的实现方式中，若资源选择窗为[n+T 1,n+T 2]，第一候选资源集合可以包括资源选择窗内的全部候选资源中、排除资源选择窗内，第二终端的激活时间的起始位置前的候选资源后的候选资源。即资源选择窗为[n+T 1,n+T 2]，但是在进行资源排除时，第一候选资源集合为[n+T 3,n+T 2]内的候选单个时间单元资源。[n+T 1,n+T 3]中的候选单个时间资源不在第一候选资源集合中。
对于部分感知的资源选择方式，第一候选资源集合也可以理解为[n+T 1,n+T 2]内Y个候选时隙内的候选资源的集合。其中Y个候选时隙是资源选择窗内的Y个时间单元。该Y个时隙可以是连续的时隙或者离散的时隙。
一种可能的实现方式，第一终端的物理层确定Y个候选时隙时，确定Y个候选时隙和第二终端的激活时间有重叠。
一种可能的实现方式，第一终端的物理层确定Y个候选时隙时，确定Y个候选时隙和第二终端的激活时间重叠比例大于K％*第一时间窗内候选资源的数量([Y个候选时隙中激活时间的起始位置，Y个候选时隙的结束位置]或者[Y个候选时隙]或者[Y个候选时隙中激活时间的起始位置，Y个候选时隙中激活时间的结束位置])。
对于部分感知的资源选择方式，感知的时间单元包含基于周期的部分感知和连续的部分感知中的至少一个。其中基于周期的部分感知(Periodic Based Partial Sensing)的时间单元是根据Y个候选时隙和资源池内配置的资源预留周期所确定的。CPS是触发资源选择的时刻n为参考点所确定的[n+Ta，n+Tb]，其中Ta和Tb的取值可以为正，为负，或为0，本申请不做限定。此时感知的时间单元可以等效于本申请中的资源感知窗。
一种可能的实现方式，第一终端可以通过以下示例性的两种方式确定第一候选资源集合。
方式1：第一终端可以通过前文所述的S1-S5中所示的方式确定第一候选资源集合。即第一候选资源集合为资源选择窗内的候选单个时间单元资源的集合。不同的是，S501中资源选择窗的含义与S1中的资源选择窗的含义不同。
在方式1中，第一候选资源集合的确定方式和S5中的候选资源集合A的确定方式相同。
一种可能的实现方式中，S501中的资源选择窗和S1中的资源选择的含义不同在于，S501中的资源选择窗满足如下限制：资源选择窗中有时域资源位于第二终端的激活时间内，即资源选择窗和第二终端的激活时间在时域上有重叠。另外，S501中的资源选择窗的时域起始位置可以为n+T 1或n+T 3。
一种可能的实现方式，第一终端的物理层确定资源选择窗时，确定[n+T 1,n+T 2]和第二终端的激活时间有重叠。
一种可能的实现方式，第一终端的物理层确定资源选择窗时，确定[n+T 1,n+T 2]和第二终端的激活时间重叠的比例大于K％*第一时间窗内候选资源的数量(第一时间窗 为[n+T 3,n+T 2]或者[n+T 1,n+T 2]或者[n+T 3,n+T 4])。其中，n+T 3和n+T 4分别是位于[n+T 1,n+T 2]中的第二终端的激活时间的起始位置和结束位置。
方式2：第一终端可以通过前文所述的S1-S7中所示的方式确定第一候选资源集合。不同的是，S501中资源选择窗的含义与S1中的资源选择窗的含义不同，具体的，可以参考上述方式1中所述。在这种情况下，第一候选资源集合的确定方式和S7中的候选资源集合C的确定方式相同。或者，第一终端可以通过S501-S503中方式1确定第三候选资源集合的方法，确定第一候选资源集合。也就是说，图5所示方法中的方式1和方式2可以串行使用。如：第一终端先使用方式1执行S501-S503后，确定了第三候选资源集合，再排除第三候选资源集合中满足第四条件的候选资源，确定第四候选资源集合，若在第四候选资源集合中，第一候选资源的数量小于或等于第二阈值，则第一终端确定第五候选资源集合。
其中，第四条件包括与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第一临界值。该第二SCI为第一终端在资源感知窗内接收到的SCI。可以理解的，第一终端排除第三候选资源集合中满足第四条件的候选资源，确定第四候选资源集合，若在第四候选资源集合中，第一候选资源的数量小于或等于第二阈值，则第一终端确定第五候选资源集合的过程，可以参考S502-S503中的方式2中所述，在这种情况下，以第一终端通过S501-S503中方式1确定的第三候选资源集合作为S501中的第一候选资源集合，使用方式2执行S502-S503)。
S502：第一终端排除第一候选资源集合中满足第一条件的候选资源，确定第二候选资源集合。
一种可能的实现方式，第一终端的物理层排除第一候选资源集合中满足第一条件的候选资源，确定第二候选资源集合。
对于上述方式1，第一条件包括与第一SCI指示的资源有重叠。第一SCI是假设第一终端在资源感知窗内没有监听的时间单元上监听到的SCI。第一SCI指示的频域资源为资源池内全部频域单元，第一SCI指示的资源预留周期为配置在资源池上的资源预留周期中的一个。
对于上述方式1，第一终端排除第一候选资源集合中满足第一条件的候选资源，确定第二候选资源集合的过程与上述S6的过程类似，因此可以参考上述S6中对应的描述，在此不做赘述。
对于上述方式2，第一条件包括与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第一临界值。第二SCI为第一终端在资源感知窗内接收到的SCI。
对于上述方式2，第一终端排除第一候选资源集合中满足第一条件的候选资源，确定第二候选资源集合的过程与上述S8的过程类似，因此可以参考上述S8中对应的描述，在此不做赘述。其中，第一临界值可以相当于S8中的临界值A。
可选的，若在第二候选资源集合中，第一候选资源的数量大于第一阈值，则第一终端的物理层向第一终端的MAC层发送第二候选资源集合。或者说，第一终端的物理层向第一终端的MAC层发送第二候选资源集合的信息，以向第一终端的MAC层指示第二候选资源集合。
S503：若在第二候选资源集合中，第一候选资源的数量小于或等于第一阈值，则 第一终端确定第三候选资源集合。
一种可能的实现方式，若在第二候选资源集合中，第一候选资源的数量小于或等于第一阈值，则第一终端的物理层确定第三候选资源集合。
其中，第三候选资源集合包括第二候选资源集合所包含的候选资源和被排除的候选资源中的至少一个第一候选资源。第三候选资源集合包含的第一候选资源的数量大于或等于第一阈值。其中，被排除的候选资源为通过S502排除的候选资源，即包括在第一候选资源集合中，但不包括在第二候选资源集合中的候选资源。
以下示例性描述中，激活时间可以理解为MAC指示的第二终端的激活时间，或者理解为MAC层指示的激活时间。这里第二终端表示接收终端，即接收第一终端所发送数据的终端。
示例性的，对于上述方式1，以第一候选资源集合包括激活时间内的候选资源和非激活时间内的候选资源为例，若S502后，第二候选资源集合包括监听时间单元对应的激活时间内的候选资源和监听时间单元对应的非激活时间内的候选资源，被排除的候选资源为未监听时间单元对应的激活时间内的候选资源和未监听时间单元对应的非激活时间内的候选资源，则S503后，第三候选资源集合包括监听时间单元对应的激活时间内的候选资源，监听时间单元对应的非激活时间内的候选资源，以及未监听时间单元对应的激活时间内的候选资源中的全部或部分资源。
示例性的，对于上述方式1，以第一候选资源集合包括激活时间内的候选资源和非激活时间内的候选资源为例，若S502后，第二候选资源集合包括监听时间单元对应的非激活时间内的候选资源，被排除的候选资源为未监听时间单元对应的激活时间内的候选资源和未监听时间单元对应的非激活时间内的候选资源，则S503后，第三候选资源集合包括监听时间单元对应的非激活时间内的候选资源，以及未监听时间单元对应的激活时间内的候选资源中的全部或部分资源。
示例性的，对于上述方式2，以第一候选资源集合包括激活时间内的候选资源1、激活时间内的候选资源2、非激活时间内的候选资源1和非激活时间内的候选资源2为例，若S502后，第二候选资源集合包括激活时间内的候选资源1和非激活时间内的候选资源1，被排除的候选资源为激活时间内的候选资源2和非激活时间内的候选资源2，则S503后，第三候选资源集合包括激活时间内的候选资源1，非激活时间内的候选资源1，以及激活时间内的候选资源2中的全部或部分候选资源。
示例性的，对于上述方式2，以第一候选资源集合包括激活时间内的候选资源1、激活时间内的候选资源2、非激活时间内的候选资源1和非激活时间内的候选资源2为例，若S502后，第二候选资源集合包括激活时间内的候选资源1，被排除的候选资源为激活时间内的候选资源2、非激活时间内的候选资源1和非激活时间内的候选资源2，则S503后，第三候选资源集合包括激活时间内的候选资源1，以及激活时间内的候选资源2中的全部或部分候选资源。
一种可能的实现方式，第一阈值为第一比例与第一时间窗内的候选资源的数量之积。其中，第一比例大于或等于0并且小于1。
在一种可能的设计中，第一时间窗为资源选择窗；或者，第一时间窗的时域起始位置为资源选择窗内、第二终端的激活时间的起始位置，第一时间窗的时域结束位置 为资源选择窗的时域结束位置；或者，第一时间窗的时域起始位置为资源选择窗内、第二终端的激活时间的起始位置，第一时间窗的时域结束位置为资源选择窗内、第二终端的激活时间的时域结束位置。
作为一种示例，第一时间窗可以如图6所示。在图6中，若资源选择窗为[n+T 1,n+T 2]，n+T 3为资源选择窗内第二终端的激活时间的起始位置，n+T 4为资源选择窗内第二终端的激活时间的结束位置，则第一时间窗是[n+T 1,n+T 2]，或者第一时间窗是[n+T 3,n+T 2]，或者第一时间窗是[n+T 3,n+T 4]。
可以理解的，对于上述方式1和方式2，第一终端确定第三候选资源集合的方式不同，下面进行具体阐述。
对于上述方式1：
一种可能的实现方式，第一终端确定第三候选资源集合，包括：第一终端排除第一候选资源集合中满足第二条件的候选资源，确定第三候选资源。其中，第二条件包括位于第二终端的非激活时间内，并且与第一SCI指示的资源有重叠。相较于第一条件，第二条件增加了位于第二终端的非激活时间内的限制。第二条件也可以理解为增加了位于第二终端的非激活时间内的限制的第一条件。
可以理解的，第二条件是针对第一终端在资源感知窗口内没有监听的时间单元来说的，假设第一终端在没有监听的时间单元上监听到了第一SCI，并且第一候选资源集合中的某个候选资源与第一SCI指示的资源有重叠，并且该候选资源位于第二终端的非激活时间内，则将该候选资源排除掉，即第三候选资源集合中不包括该候选资源。也就是说，通过第二条件，第一终端可以将第一候选资源集合中位于第二终端的非激活时间内，并且与第一SCI指示的资源有重叠的候选资源排除掉。或者说，通过第二条件，第一终端可以将被排除的候选资源中的全部第一候选资源增加到第二候选资源集合中，得到第三候选资源集合。其中，候选资源位于第二终端的非激活时间内可以理解为候选资源的部分或全部时间单元位于第二终端的非激活时间内。
一种可能的实现方式，第一终端确定第三候选资源集合，包括：第一终端确定第一候选资源集合，排除第一候选资源集合中满足第二条件的候选资源，确定第三候选资源。也就是说，第一终端可以再次确定第一候选资源集合，并根据第二条件在第一候选资源集合中排除候选资源，得到第三候选资源集合。
一种可能的实现方式，第一终端确定第三候选资源集合，包括：第一终端选择被排除的候选资源中的至少一个第一候选资源，确定为第三候选资源集合中的候选资源。也就是说，第一终端可以将被排除的候选资源中的部分或全部第一候选资源，确定为第三候选资源集合中的候选资源。
作为一种示例，第一终端可以将被排除的候选资源中的部分第一候选资源，确定为第三候选资源集合中的候选资源。如：被排除的候选资源中的至少一个第一候选资源为在被排除的第一候选资源中随机确定的。可以理解的，随机确定的第一候选资源的数量可以使得第三候选资源集合中的第一候选资源的数量大于或等于第一阈值。可以理解的，在被排除的候选资源中随机确定第一候选资源可以使得干扰随机化，而且实现起来较为简单。
作为另一种示例，第一终端可以将被排除的候选资源中的部分第一候选资源，确 定为第三候选资源集合中的候选资源。如：被排除的候选资源中的至少一个第一候选资源为被排除的第一候选资源中时域位置靠前的N个第一候选资源。其中，N为正整数。可以理解的，N可以使得第三候选资源集合中的第一候选资源的数量大于或等于第一阈值。
可以理解的，第三候选资源集合中除了包括第一终端选择的被排除的候选资源中的至少一个第一候选资源之外，还可以包括第二候选资源集合中的候选资源。
可选的，S503之后，第一终端可以继续在第三候选资源集合中排除候选资源，确定第六候选资源集合。例如，第一终端可以通过前文所述的S7-S9中所示的方式确定第六候选资源集合。后续，第一终端的物理层可以向第一终端的MAC层发送第六候选资源集合。或者说，第一终端的物理层可以向第一终端的MAC层发送第六候选资源集合的信息，以向第一终端的MAC层指示第六候选资源集合。可以理解的，第一终端的MAC层接收到第六候选资源集合后，可以在第六候选资源集合中选择初传资源，或者可以在第六候选资源集合中选择初传资源和重传资源。
对于上述方式2：
一种可能的实现方式，第一终端确定第三候选资源集合，包括：第一终端排除第一候选资源集合中满足第三条件的候选资源，确定第三候选资源。其中，第三条件包括位于第二终端的激活时间内，与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第二临界值，以及位于第二终端的非激活时间内，与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第一临界值。第二临界值大于第一临界值。例如，第二临界值＝第一临界值+XdB。X为正整数，如X可以为1、3、4、5、6等。也就是说，第一终端可以将位于第二终端的激活时间内的候选资源对应的RSRP阈值从第一临界值提升到第二临界值，再重新在第一候选资源集合中排除候选资源。也就是说，第一终端可以将位于第二终端的激活时间内的候选资源对应的RSRP阈值提升3dB重新在第一候选资源集合中排除候选资源。
本申请实施例中，候选资源对应的RSRP阈值可以理解为，和候选资源所重叠的SCI所指示的资源对应的RSRP阈值，即根据该SCI中的优先级和进行资源选择的优先级所确定的RSRP阈值，或者，根据SCI所指示的优先级值和进行资源选择所使用的优先级值确定的RSRP阈值。这里对候选资源对应的RSRP阈值的解释可以适用于本申请提供的所有实施例，在此做出统一说明，后面不再赘述。
可以理解的，第三条件是针对终端在资源感知窗口内监听到了第二SCI来说的，若第一候选资源集合中的某个候选资源位于第二终端的激活时间内，并且该候选资源与第二SCI指示的资源有重叠，并且该候选资源对应的RSRP的测量值大于或等于第二临界值(第一候选资源集合中位于第二终端的激活时间内的候选资源对应的RSRP阈值发生了改变)，则将该候选资源排除掉，即第三候选资源集合中不包括该候选资源；若第一候选资源集合中的某个候选资源位于第二终端的非激活时间内，并且该候选资源与第二SCI指示的资源有重叠，并且该候选资源对应的RSRP的测量值大于或等于第一临界值(第一候选资源集合中位于第二终端的非激活时间内的候选资源对应的RSRP不变)，则将该候选资源排除掉，即第三候选资源集合中不包括该候选资源。也就是说，第一终端可以将位于第二终端的激活时间内的候选资源对应的RSRP阈值 提升3dB，但对位于第二终端的非激活时间内的候选资源对应的RSRP阈值保持不变，重新在第一候选资源集合中排除候选资源。也可以理解为，第一终端以3dB为步长只提升位于第二终端的激活时间内的候选资源对应的RSRP阈值，重新在第一候选资源集合中排除候选资源。可以理解的，若第一候选资源集合不包括第二候选资源，即第一候选资源集合中不包括资源选择窗内位于第二终端的非激活时间内的候选资源，则第三条件可以简化为：位于第二终端的激活时间内，与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第二临界值。
一种可能的实现方式，第一终端确定第三候选资源集合，包括：第一终端确定第一候选资源集合，排除第一候选资源集合中满足第三条件的候选资源，确定第三候选资源集合。也就是说，第一终端可以再次(重新)确定第一候选资源集合，并根据第三条件在第一候选资源集合中排除候选资源，得到第三候选资源集合。
可选的，若S503之后，第三候选资源集合包含的第一候选资源的数量小于第一阈值，则第一终端可以再次执行S503，不同的是，第一终端再次执行S503时，可以再次提高第二临界值的值(第二临界值加上XdB，X为正整数)，使得第三候选资源集合可以包括更多的第一候选资源。
一种可能的实现方式，第一终端确定第三候选资源集合，包括：第一终端选择被排除的候选资源中的至少一个第一候选资源，确定为第三候选资源集合中的候选资源。也就是说，第一终端可以将被排除的候选资源中的部分或全部第一候选资源，确定为第三候选资源集合中的候选资源。
第一终端可以将被排除的候选资源中的部分第一候选资源，确定为第三候选资源集合中的候选资源。作为一种示例，第一终端在被排除的第一候选资源中按照RSRP测量值从高到低的顺序选择M个第一候选资源，确定M个第一候选资源为第三候选资源集合中的候选资源。M为正整数。可以理解的，M可以使得第三候选资源集合中包含的第一候选资源的数量大于或等于第一阈值。可以理解的，按照RSRP测量值从高到低的顺序选择第一候选资源，可以使得低干扰的候选资源优先被选择。由于使用低干扰的资源传输数据比使用高干扰的资源传输数据的成功率更高，所以按照RSRP测量值从高到低的顺序选择第一候选资源可以提高数据传输的可靠性。
可以理解的，第三候选资源集合中除了包括第一终端选择的被排除的候选资源中的至少一个第一候选资源之外，还可以包括第二候选资源集合中的候选资源。这是因为确定第三候选资源集合的过程，本质是在第二候选资源集合中的候选资源的基础上，增加被排除的候选资源中的第一候选资源。
通过上述各种可能的实现方式的描述可以看出，在方式2中，第一终端是根据第一候选资源对应的RSRP测量值，确定第三候选资源集合中的候选资源的。如此，第三候选资源集合中的第一候选资源是第一候选资源集合中RSRP的测量值相对较低的第一候选资源，以避免第一终端确定的用于向第二终端发送数据的可用资源的干扰较高。
可选的，对于上述方式2，S503之后，第一终端的物理层向第一终端的MAC层发送第三候选资集合。或者说，第一终端的物理层向第一终端的MAC层发送第三候选资集合的信息，以向第一终端的MAC层指示第三候选资源集合。可以理解的，第 一终端的MAC层接收到第三候选资源集合后，可以在第三候选资源集合中选择初传资源，或者可以在第三候选资源集合中选择初传资源和重传资源。
基于图5所示的方法，第一终端可以确定第一候选资源集合，并根据第一条件在第一候选资源集合中排除候选资源，得到第二候选资源集合，在第二候选资源集合中，位于第二终端的激活时间内的第一候选资源的数量小于或等于第一阈值的情况下，可以确定第三候选资源集合，使得第三候选资源集合中，第一候选资源的数量大于或等于第一阈值。如此，可以使得第一终端确定的候选资源集合中包括第二终端的激活时间内的候选资源，以便第二终端可以接收到第一终端发送的数据。另外，在确定第三候选资源集合时，第一终端是将被排除的候选资源中的第一候选资源确定为第三候选资源集合中的候选资源，而未将被排除的候选资源中的第二候选资源确定为第三候选资源集合中的候选资源。一方面，可以避免第三候选资源集合中包括不必要的候选资源(第二终端的非激活时间内，没有监听的候选资源和干扰大的候选资源)，另一方面，被排除的候选资源的可靠性无法保证，因此，不将被排除的候选资源中的第二候选资源确定为第三候选资源集合中的候选资源，可以减少第三候选资源集合中的候选资源发生资源冲突的概率，提高在第三候选资源集合中的候选资源上传输的数据的可靠性。
进一步可选的，在图5所示方法的一种可能的实现方式中，第一终端还可以获取第二终端的激活时间，以便第一终端根据第二终端的激活时间确定第三候选资源集合。也就是说，图5所示的方法还可以包括S504。
S504：第一终端获取第二终端的激活时间。
一种可能的实现方式，第一终端获取第二终端的激活时间，包括：第一终端获取第一指示信息，根据第一指示信息，确定第二终端的激活时间。例如，第一终端的MAC层向第一终端的物理层发送第一指示信息，第一终端的物理层接收到第一指示信息后，根据第一指示信息确定第二终端的激活时间。其中，第一指示信息用于指示第二终端的激活时间的时域位置。
在一种可能的设计中，第一指示信息包括至少一组第二终端的激活时间的时域起始位置和第二终端的激活时间的长度。如此，第一终端可以根据第二终端的激活时间的时域起始位置和第二终端的激活时间的长度，确定第二终端的激活时间的时域结束位置，从而确定第二终端的激活时间的时域位置(时域范围)。或者，第一指示信息包括至少一组第二终端的激活时间的时域起始位置和时域结束位置。如此，第一终端可以根据第二终端的激活时间的时域起始位置和时域结束位置确定第二终端的激活时间的时域位置。
可以理解的，第二终端的激活时间可能是离散的，所以第一指示信息指示的第二终端的激活时间可以有多组。例如，以图7所示的第二终端的激活时间和非激活时间为例，第一指示信息可以指示3组第二终端的激活时间。其中，第一组第二终端的激活时间的起始时隙为n+3，长度为1个时隙，第二组第二终端的激活时间的起始时隙为n+5，长度为1个时隙，第三组第二终端的激活时间的起始时隙为n+7，长度为2个时隙。
在另一种可能的设计中，第一指示信息包括m比特(长度为m的比特图bitmap)。 该m比特与m个时间单元对应，每个比特的值用于指示该比特对应的时间单元是否位于第二终端的激活时间内。也就是说，可以通过比特位图来指示一段连续的时间单元中的每个时间单元是否位于第二终端的激活时间内。其中，该一段连续的时间单元的起始位置可以是n，结束位置可以为n+剩余PDB(剩余数据包时延预算，Remaining PDB)。该剩余PDB为MAC层触发物理层进行资源选择时所指示的剩余PDB。
示例性的，以图7所示的第二终端的激活时间和非激活时间为例，第一指示信息可以包括“000101011”。该第一指示信息指示了时隙n至时隙n+8中的每个时隙是否位于第二终端的激活时间内。其中，时隙n至时隙n+2位于第二终端的非激活时间内，时隙n+3位于第二终端的激活时间内，时隙n+4位于第二终端的非激活时间内，时隙n+5位于第二终端的激活时间内，时隙n+6位于第二终端的非激活时间内，时隙n+7至时隙n+8位于第二终端的激活时间内。
可以理解的，可以为该比特位图配置一个周期，这样，第一终端可以确定多段连续的时间单元中的每个时间单元是否位于第二终端的激活时间内。
一种可能的实现方式(MAC层的实现方式)，若第一指示信息包括m个比特，在第一时间单元内，第二终端的激活时间所在的符号与PSCCH所在的符号不完全重叠(PSCCH不在第二终端的激活时间)，则第一时间单元位于第二终端的非激活时间内。第一时间单元为m个时间单元中的任意一个。也就是说，通过比特位图来指示一段连续的时间单元中的每个时间单元是否位于第二终端的激活时间内时，时间单元位于第二终端的激活时间内可以理解为：该时间单元和第二终端的激活时间完全重叠，或者，至少该时间单元中PSCCH所在的符号和第二终端的激活时间完全重叠。时间单元位于第二终端的非激活时间内可以理解为：该时间单元与第二终端的激活时间完全不重叠，或者该时间单元与第二终端的激活时间不完全重叠，或者至少该时间单元中PSCCH所在的符号和第二终端的激活时间不完全重叠。这是因为，终端要想接收数据需要接收PSCCH，假设PSCCH接收不到，则终端无法解码PSSCH。因此假设一个候选资源(候选单个时隙资源)中PSCCH所在符号不在终端的激活时间内，则终端无法成功接收数据。因此候选资源所在时隙至少要保证PSCCH所在符号在终端的激活时间内。
作为一种示例，请参考图8，在图8中的(a)中，PSCCH所在的符号为时隙0中的符号0-符号2，第二终端的激活时间所在的符号为时隙0中的符号0-符号6，PSCCH所在的符号与第二终端的激活时间完全重叠，所以时隙0位于第二终端的激活时间内。在图8中的(b)中，PSCCH所在的符号为时隙1中的符号0-符号2，第二终端的激活时间所在的符号为时隙1中的符号6-符号13，PSCCH所在的符号与第二终端的激活时间完全不重叠，所以时隙1位于第二终端的非激活时间内。
一种可能的实现方式，第一终端的MAC层所确定的第二终端的激活时间(所指示的激活时间)有更新时，MAC层可以指示给PHY层(物理层)更新后的第二终端的激活时间，此时PHY层使用更新后的第二终端的激活时间进行资源选择(重选)的过程，或者进行抢占(pre-emption)或重评估(re-evaluation)的过程。换句话说，第二终端的激活时间进行资源选择(重选)的过程，或者进行抢占(pre-emption)或重评估(re-evaluation)的过程时，使用最新被指示的第二终端的激活时间(或最新所指 示的激活时间，或最新被指示的接收终端的激活时间)。
一种可能的实现方式中，第一终端的MAC层所确定的第二终端的激活时间(所指示的激活时间)有更新时，MAC层可以指示给PHY层更新的第二终端的激活时间，此时触发PHY层进行资源重选。
可以理解的，除了上述方式之外，第一终端还可以自己决定如何获取第二终端的激活时间，也就是说，第一终端获取第二终端的激活时间的方式可以基于第一终端的内部实现。
其中，上述S501-S504中的第一终端的动作可以由图4所示的通信装置40中的处理器401调用存储器403中存储的应用程序代码来执行，本申请实施例对此不做任何限制。
在上述图5所示的方法中，在第一终端可以先确定第一候选资源集合，排除第一候选资源集合中满足第一条件的候选资源，确定第二候选资源集合，在第二候选资源集合中的第一候选资源的数量小于或等于第一阈值的情况下，确定第三候选资源集合，使得第三候选资源集合中的第一候选资源的数量大于或等于第一阈值。在实际应用中，除了考虑第二候选资源集合中的第一候选资源的数量是否大于或等于一个阈值之外，可能还要考虑第二候选资源集合中的候选资源的数量是否大于或等于一个阈值。具体的，可以参考下述图9所示的方法。
如图9所示，为本申请实施例提供的又一种确定候选资源集合的方法，该方法包括S901-S902。
S901：第一终端排除第一候选资源集合中满足第一预设条件的候选资源，确定第二候选资源集合。
一种可能的实现方式，第一终端的物理层排除第一候选资源集合中满足第一预设条件的候选资源，确定第二候选资源集合。
其中，第一终端可以为图3所示通信系统30中的任一终端。例如，第一终端可以为终端301、终端302或终端303。第一候选资源集合为资源选择窗内的候选资源的集合。第一终端可以在资源选择窗中选择资源，用于传输PSCCH和/或PSSCH。由于资源选择窗内的资源有可能用于PSCCH和/或PSSCH的传输，所以资源选择窗内的资源可以称为候选资源。
其中，候选资源包括第一时间单元对应的至少一个频域单元。第一时间单元为资源选择窗内的多个时间单元中的一个。例如，候选资源包括一个时隙下的连续L subCH个子信道。
一种可能的实现方式，第一候选资源集合包括至少一个第一候选资源。其中，第一候选资源为资源选择窗内位于第二终端的激活时间内的候选资源。第二终端为与第一终端通信连接的终端，第一终端确定了用于向第二终端发送数据的可用资源后，可以通过该可用资源向第二终端发送数据。以图3所示的通信系统30为例，若第一终端为终端301，则第二终端可以为终端302或终端303。
一种可能的实现方式，第二终端的激活时间为MAC层触发物理层进行资源选择时，所指示的接收终端的激活时间。
一种可能的实现方式，第二终端的激活时间为MAC层触发物理层进行资源选择 时，所指示的激活时间，也就是说，第二终端的激活时间可以替换为MAC层指示的激活时间。
一种可能的实现方式，第二终端的数量可以是一个或多个，此时第二终端的激活时间为一个或多个终端的激活时间的并集。
一种可能的实现方式，第一候选资源为资源选择窗内位于第二终端的激活时间内的候选资源，可以理解为第一候选资源为资源选择窗内的候选资源，并且第一候选资源与第二终端的激活时间在时域上有重叠，例如，第一候选资源包括的部分或全部时间单元位于第二终端的激活时间内。又例如，第一候选资源中至少PSCCH所在符号位于第二终端的激活时间内。
对于部分感知的资源选择方式，第一候选资源集合也可以理解为[n+T 1,n+T 2]内Y个候选时隙内的候选资源的集合。其中Y个候选时隙是资源选择窗内的Y个时间单元。该Y个时隙可以是连续的时隙或者离散的时隙。
一种可能的实现方式，第一终端的物理层确定Y个候选时隙时，确定Y个候选时隙和第二终端的激活时间有重叠。
一种可能的实现方式，第一终端的物理层确定Y个候选时隙时，确定Y个候选时隙和第二终端的激活时间重叠比例大于K％*第一时间窗内候选资源的数量([Y个候选时隙中激活时间的起始位置，Y个候选时隙的结束位置]或者[Y个候选时隙]或者[Y个候选时隙中激活时间的起始位置，Y个候选时隙中激活时间的结束位置])。
对于部分感知的资源选择方式，感知的时间单元包含基于周期的部分感知和连续的部分感知中的至少一个。其中基于周期的部分感知(Periodic Based Partial Sensing)的时间单元是根据Y个候选时隙和资源池内配置的资源预留周期所确定的。CPS是触发资源选择的时刻n为参考点所确定的[n+Ta，n+Tb]，其中Ta和Tb的取值可以为正，为负，或为0，本发明不做限定。此时感知的时间单元可以等效于本发明书中的资源感知窗。
可选的，第一候选资源集合还包括第二候选资源。其中，第二候选资源为资源选择窗内位于第二终端的非激活时间内的候选资源。也就是说，第二候选资源为资源选择窗内的候选资源，并且第二候选资源与第二终端的非激活时间在时域上有重叠，例如，第二候选资源包括的的部分或全部时间单元位于第二终端的非激活时间内。又例如，第一候选资源中至少PSCCH所在符号不位于第二终端的激活时间内。
S901中的资源选择窗的介绍可以参考上述S501中对资源选择窗的描述，在此不做赘述。
一种可能的实现方式，第一预设条件包括与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第一临界值。其中，第二SCI为第一终端在资源感知窗内接收到的SCI。在这种情况下，第一终端排除第一候选资源集合中满足第一预设条件的候选资源，确定第二候选资源集合的过程与上述S8的过程类似，因此可以参考上述S8中对应的描述，在此不做赘述。其中，第一临界值可以相当于S8中的临界值A。
可选的，S901之前，第一终端确定第一候选资源集合。例如，第一终端可以通过前文所述的S1-S5中所示的方式确定第一候选资源集合。不同的是，S901中资源选择 窗的含义与S1中的资源选择窗的含义不同。在这种情况下，第一候选资源集合的确定方式和S5中的候选资源集合A的确定方式相同。又例如，第一终端可以通过上述S501-S503中采用方式1确定第三候选资源集合的方法，确定第一候选资源集合。
S902：第一终端根据第二候选资源集合中的候选资源的数量，以及第二候选资源集合中第一候选资源的数量，确定第三候选资源集合。
一种可能的实现方式，第一终端的物理层根据第二候选资源集合中的候选资源的数量，以及第二候选资源集合中第一候选资源的数量，确定第三候选资源集合。
其中，第三候选资源集合包括至少一个第一候选资源，第三候选资源集合中的候选资源的数量大于或等于第一阈值。
可以理解的，根据第二候选资源集合中的候选资源的数量，以及第二候选资源集合中第一候选资源的数量可以分为以下四种情况：情况1：第二候选资源集合中的候选资源的数量大于或等于第一阈值，并且第二候选资源集合中的第一候选资源的数量大于或等于第二阈值；情况2：第二候选资源集合中的候选资源的数量小于第一阈值，并且第二候选资源集合中的第一候选资源的数量小于第二阈值；情况3：第二候选资源集合中的候选资源的数量小于第一阈值，并且第二候选资源集合中的第一候选资源的数量大于或等于第二阈值；情况4：第二候选资源集合中的候选资源的数量大于或等于第一阈值，并且第二候选资源集合中的第一候选资源的数量小于第二阈值。
一种可能的实现方式为，第一阈值为第一比例与资源选择窗内的候选资源的数量之积，第二阈值为第二比例与第一时间窗内的第一候选资源的数量之积。第一比例和第二比例可以是独立配置，即分别由网络设备配置或者预配置在资源池上。示例性的，第二比例和第一比例独立配置，并且第二比例不大于第一比例。第一比例和第二比例也可以相同。
一种可能的实现方式中，第二阈值为0，即第二比例为0。
下面对情况1-情况4中，第一终端确定第三候选资源集合的方法分别阐述。
情况1：第二候选资源集合中的候选资源的数量大于或等于第一阈值，并且第二候选资源集合中的第一候选资源的数量大于或等于第二阈值。
在情况1中，第三候选资源集合即为第二候选资源集合。或者，在情况1中，可以不执行S902，第一终端的物理层确定了第二候选资源集合后，可以向第二终端的MAC层发送第二候选资源集合，或者说，可以向第二终端的MAC层发送第二候选资源集合的信息，以向第一终端的MAC层指示第二候选资源集合。
情况2：第二候选资源集合中的候选资源的数量小于第一阈值，并且第二候选资源集合中的第一候选资源的数量小于第二阈值。
在一种可能的实现方式中，第一终端确定第三候选资源集合，包括：第一终端选择被排除的候选资源中的至少一个第一候选资源，确定为第三候选资源集合中的候选资源。也就是说，第一终端可以将被排除的候选资源中的部分或全部第一候选资源，确定为第三候选资源集合中的候选资源。
作为一种示例，被排除的候选资源中的至少一个第一候选资源为在被排除的第一候选资源中随机确定的。可以理解的，随机确定的第一候选资源的数量可以使得第三候选资源集合中候选资源的数量大于或等于第一阈值，并且使得第三候选资源集合中 的第一候选资源的数量大于或等于第二阈值。可以理解的，在被排除的候选资源中随机确定第一候选资源可以使得干扰随机化，而且实现起来较为简单。
作为另一种示例，将被排除的第一候选资源按照RSRP测量值从高到低的顺序选择的M个第一候选资源，确定为第三候选资源集合中的候选资源。其中，M为正整数。可以理解的，M可以使得第三候选资源集合中候选资源的数量大于或等于第一阈值，并且使得第三候选资源集合中的第一候选资源的数量大于或等于第二阈值。可以理解的，按照RSRP测量值从高到低的顺序选择第一候选资源，可以使得低干扰的候选资源优先被选择。由于使用低干扰的资源传输数据比使用高干扰的资源传输数据的成功率更高，所以按照RSRP测量值从高到低的顺序选择第一候选资源可以提高数据传输的可靠性。
可以理解的，第三候选资源集合中除了包括第一终端选择的被排除的候选资源中的至少一个第一候选资源之外，还可以包括第二候选资源集合中的候选资源。
在另一种可能的实现方式中，第一终端确定第三候选资源集合，包括：第一终端排除第一候选资源集合中满足第二预设条件的候选资源，确定第三候选资源集合。
其中，第二预设条件包括位于第二终端的激活时间内，与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第二临界值，以及位于第二终端的非激活时间内，与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第一临界值。第二临界值大于第一临界值。例如，第二临界值＝第一临界值+XdB。X为正整数，如X可以为1、3、4、5、6等。也就是说，第一终端可以将位于第二终端激活时间内的资源对应的RSRP的阈值从第一临界值提升到第二临界值(位于第二终端非激活时间内的资源对应的RSRP的阈值可以不变)，再重新在第一候选资源集合中排除候选资源。也就是说，第二预设条件是在第一预设条件的基础上，对位于第二终端的激活时间内的候选资源对应的RSRP阈值提升了XdB，对位于第二终端的非激活时间内的候选资源对应的RSRP阈值保持不变，重新在第一候选资源集合中排除候选资源。
可以理解的，若第一候选资源集合不包括第二候选资源，即第一候选资源集合中不包括资源选择窗内位于第二终端的非激活时间内的候选资源，则第二预设条件可以简化为：位于第二终端的激活时间内，与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第二临界值。
可以理解的，在具体应用中，第一终端排除第一候选资源集合中满足第二预设条件的候选资源，确定第三候选资源集合后，可能存在如下情况：第三候选资源集合中候选资源的数量大于或等于第一阈值，但是第二候选资源集合中的第一候选资源的数量小于第二阈值。在这种情况下，第一终端可以确定此时的候选资源集合为第三候选资源集合。此时第三候选资源集合中包含第一候选资源，但是第一候选资源的数量不一定大于或等于第二阈值。此时MAC层已经可以选择位于第二终端的激活时间的资源，保证了第二终端能够接收第一终端所发送的数据。或者，第一终端可以继续增加位于第二终端的激活时间内的候选资源对应的RSRP阈值重新在第一候选资源集合中排除候选资源。使得所述第三候选资源集合中候选资源的数量大于或等于第一阈值，并且第二候选资源集合中的第一候选资源的数量大于或等于第二阈值。
在另一种可能的实现方式中，第一终端确定第三候选资源集合，包括：第一终端排除第一候选资源集合中满足第二预设条件的候选资源，确定第三候选资源集合。
第一终端先满足第二候选资源集合中的候选资源的数量大于所述第一阈值的限制，再满足第二候选资源集合中的第一候选资源的数量大于第二阈值的限制，具体的实施步骤如下：
第一终端提升RSRP阈值(包括了位于第二终端的激活时间内的候选资源对应的RSRP阈值和位于第二终端的非激活时间内的候选资源对应的RSRP阈值)重新在第一候选资源集合中排除候选资源(该过程参考S6)。当第二候选资源集合中的候选资源的数量大于所述第一阈值，第二候选资源集合中的第一候选资源的数量小于第二阈值，第一终端继续排除满足第二预设条件的候选资源，确定第三候选资源集合。
其中，第二预设条件包括位于第二终端的激活时间内，与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第二临界值，以及位于第二终端的非激活时间内，与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第一临界值。第二临界值大于第一临界值。例如，第二临界值＝第一临界值+XdB。X为正整数，如X可以为1、3、4、5、6等。也就是说，第一终端可以提升位于第二终端激活时间内的资源对应的RSRP的阈值再重新在第一候选资源集合中排除候选资源。也就是说，第二预设条件是在第一预设条件的基础上，对位于第二终端的激活时间内的候选资源对应的RSRP阈值提升了XdB，对位于第二终端的非激活时间内的候选资源对应的RSRP阈值保持不变，重新在第一候选资源集合中排除候选资源。
在另一种可能的实现方式中，第一终端确定第三候选资源集合，包括：第一终端排除第一候选资源集合中满足第二预设条件的候选资源，确定第三候选资源集合。
第一终端先满足第二候选资源集合中的第一候选资源的数量大于第二阈值的限制，再满足第二候选资源集合中的候选资源的数量大于所述第一阈值的限制，具体的实施步骤如下：
第一终端确定第三候选资源集合，包括：第一终端排除第一候选资源集合中满足第二预设条件的候选资源，确定第三候选资源集合。
其中，第二预设条件包括位于第二终端的激活时间内，与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第二临界值，以及位于第二终端的非激活时间内，与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第一临界值。第二临界值大于第一临界值。例如，第二临界值＝第一临界值+XdB。X为正整数，如X可以为1、3、4、5、6等。也就是说，第一终端可以将位于第二终端激活时间内的资源对应的RSRP的阈值从第一临界值提升到第二临界值(位于第二终端非激活时间内的资源对应的RSRP的阈值可以不变)，再重新在第一候选资源集合中排除候选资源。也就是说，第二预设条件是在第一预设条件的基础上，对位于第二终端的激活时间内的候选资源对应的RSRP阈值提升了XdB，对位于第二终端的非激活时间内的候选资源对应的RSRP阈值保持不变，重新在第一候选资源集合中排除候选资源。
当第二候选资源集合中的第一候选资源的数量大于第二阈值，第一终端提升RSRP阈值(包括了位于第二终端的激活时间内的候选资源对应的RSRP阈值和位于第二终 端的非激活时间内的候选资源对应的RSRP阈值)重新在第一候选资源集合中排除候选资源(该过程参考S6)，此时第三候选资源集合中的候选资源的数量大于所述第一阈值。
一种可实现的方式，当情况2执行过程中，情况2中的第二候选资源集合中的候选资源的数量小于第一阈值，并且第二候选资源集合中的第一候选资源的数量小于第二阈值，先满足第二候选资源集合中的候选资源的数量大于所述第一阈值，即第二候选资源集合中的候选资源的数量大于第一阈值，第二候选资源集合中的第一候选资源的数量小于第二阈值，则情况2变为情况1。当先满足第二候选资源集合中的第一候选资源的数量大于第二阈值的限制，即第二候选资源集合中的候选资源的数量小于第一阈值，第二候选资源集合中的第一候选资源的数量大于第二阈值，则情况2变为情况3。
情况3：第二候选资源集合中的候选资源的数量小于第一阈值，并且第二候选资源集合中的第一候选资源的数量大于或等于第二阈值。
一种可能的实现方式，第一终端确定第三候选资源集合，包括：第一终端排除第一候选资源集合中满足第三预设条件的候选资源，确定所述第三候选资源集合。
其中，第三预设条件包括与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第三临界值。第三临界值大于第一临界值。例如，第三临界值＝第一临界值+YdB。Y为正整数，如Y可以为1、3、4、5、6等。也就是说，第一终端可以将RSRP的阈值从第一临界值提升到第三临界值，再重新在第一候选资源集合中排除候选资源。
情况4：第二候选资源集合中的候选资源的数量大于或等于第一阈值，并且第二候选资源集合中的第一候选资源的数量小于第二阈值。
在一种可能的实现方式中，第一终端确定第三候选资源集合，包括：第一终端排除第一候选资源集合中满足第四预设条件的候选资源，确定第三候选资源集合。
在一种可能的设计中，第四预设条件包括位于第二终端的非激活时间内，与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第一临界值。在这种情况下，第一终端可以对第一候选资源集合中的第二候选资源进行排除，而不排除第一候选资源。
在另一种可能的设计中，第四预设条件包括位于第二终端的激活时间内，并且与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第四临界值，以及位于第二终端的非激活时间内，并且与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第一临界值。第四临界值大于第一临界值。例如，第四临界值＝第一临界值+ZdB。Z为正整数，如Z可以为1、3、4、5、6等。也就是说，第一终端可以将位于第二终端激活时间内的资源对应的RSRP的阈值从第一临界值提升到第四临界值(位于第二终端非激活时间内的资源对应的RSRP的阈值可以不变)，再重新在第一候选资源集合中排除候选资源。这里可以理解的是，其中一种情况，第一临界值是上一次资源排除的过程中所使用的临界值。第四临界值是上一次资源排除的过程中所使用的临界值加上了ZdB。其中另一种情况，第一临界值是初始确定的RSRP阈值(即前文所述的临界值A)，在这种情况下，第四临界值＝第一临界值+Z*BdB， 其中，B为RSRP阈值提升的次数。
可以理解的，第二临界值、第三临界值和第四临界值可以相同也可以不同。
可以理解的，若第一候选资源集合不包括第二候选资源，即第一候选资源集合中不包括资源选择窗内位于第二终端的非激活时间内的候选资源，则第三预设条件可以简化为：位于第二终端的激活时间内，与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于或等于第二临界值。
在另一种可能的实现方式中，第一终端确定第三候选资源集合，包括：第一终端确定第一候选资源集合中的至少一个第一候选资源为第三候选资源集合中的候选资源。具体的，可以参考上述情况2中对应的描述。
基于图9所示方法，第一终端排除第一候选资源集合中满足第一预设条件的候选资源，确定第二候选资源集合后，可以根据第二候选资源集合中的候选资源的数量，以及第二候选资源集合中第一候选资源的数量，确定第三候选资源集合，使得第三候选资源集合包括至少一个第一候选资源，并且第三候选资源集合中候选资源的数量大于或等于第一阈值。
其中，上述S901-S902中的第一终端的动作可以由图4所示的通信装置40中的处理器401调用存储器403中存储的应用程序代码来执行，本申请实施例对此不做任何限制。
除了上述图5和图9所示的方法之外，第一终端还可以在排除候选资源时，不排除资源选择窗内位于第二终端激活时间内的候选资源，使得第一终端最终确定的候选资源集合中包括位于第二终端激活时间内的候选资源。具体的，可以参考下述图10所示的方法。
如图10所示，为本申请实施例提供的又一种确定候选资源集合的方法，该方法包括S1001-S1002。
S1001：第一终端确定第一候选资源集合。
一种可能的实现方式，第一终端的物理层确定第一候选资源集合。
其中，第一终端可以为图3所示通信系统30中的任一终端。例如，第一终端可以为终端301、终端302或终端303。第一候选资源集合为资源选择窗内的候选资源的集合。第一终端可以在资源选择窗中选择资源，用于传输PSCCH和/或PSSCH。由于资源选择窗内的资源有可能用于PSCCH和/或PSSCH的传输，所以资源选择窗内的资源可以称为候选资源。
其中，候选资源包括第一时间单元对应的至少一个频域单元。第一时间单元为资源选择窗内的多个时间单元中的一个。例如，候选资源包括一个时隙下的连续L subCH个子信道。
一种可能的实现方式，第一候选资源集合包括至少一个第一候选资源。其中，第一候选资源为资源选择窗内位于第二终端的激活时间内的候选资源。第二终端为与第一终端通信连接的终端，第一终端确定了用于向第二终端发送数据的可用资源后，可以通过该可用资源向第二终端发送数据。以图3所示的通信系统30为例，若第一终端为终端301，则第二终端可以为终端302或终端303。
一种可能的实现方式，第二终端的激活时间为MAC层触发物理层进行资源选择 时，所指示的接收终端的激活时间。
一种可能的实现方式，第二终端的激活时间为MAC层触发物理层进行资源选择时，所指示的激活时间，也就是说，第二终端的激活时间可以替换为MAC层指示的激活时间。
一种可能的实现方式，第二终端的数量可以是一个或多个，此时第二终端的激活时间为一个或多个终端的激活时间的并集。
一种可能的实现方式，第一候选资源为资源选择窗内位于第二终端的激活时间内的候选资源，可以理解为第一候选资源为资源选择窗内的候选资源，并且第一候选资源与第二终端的激活时间在时域上有重叠，例如，第一候选资源包括的部分或全部时间单元位于第二终端的激活时间内。
对于部分感知的资源选择方式，第一候选资源集合也可以理解为[n+T 1,n+T 2]内Y个候选时隙内的候选资源的集合。其中Y个候选时隙是资源选择窗内的Y个时间单元。该Y个时隙可以是连续的时隙或者离散的时隙。
一种可能的实现方式，第一终端的物理层确定Y个候选时隙时，确定Y个候选时隙和第二终端的激活时间有重叠。
一种可能的实现方式，第一终端的物理层确定Y个候选时隙时，确定Y个候选时隙和第二终端的激活时间重叠比例大于K％*第一时间窗内候选资源的数量([Y个候选时隙中激活时间的起始位置，Y个候选时隙的结束位置]或者[Y个候选时隙]或者[Y个候选时隙中激活时间的起始位置，Y个候选时隙中激活时间的结束位置])。
对于部分感知的资源选择方式，感知的时间单元包含基于周期的部分感知和连续的部分感知中的至少一个。其中基于周期的部分感知(Periodic Based Partial Sensing)的时间单元是根据Y个候选时隙和资源池内配置的资源预留周期所确定的。CPS是触发资源选择的时刻n为参考点所确定的[n+Ta，n+Tb]，其中Ta和Tb的取值可以为正，为负，或为0，本发明不做限定。此时感知的时间单元可以等效于本发明书中的资源感知窗。
可选的，第一候选资源集合还包括第二候选资源。其中，第二候选资源为资源选择窗内位于第二终端的非激活时间内的候选资源。也就是说，第二候选资源为资源选择窗内的候选资源，并且第二候选资源与第二终端的非激活时间在时域上有重叠，例如，第二候选资源包括的的部分或全部时间单元位于第二终端的非激活时间内。
S1001中的资源选择窗的介绍可以参考上述S501中对资源选择窗的描述，在此不做赘述。
一种可能的实现方式，第一终端通过前文所述的S1-S5中所示的方式确定第一候选资源集合。不同的是，S1001中资源选择窗的含义与S1中的资源选择窗的含义不同，具体的，可以参考上述S501中所述。在这种情况下，第一候选资源集合的确定方式和S5中的候选资源集合A的确定方式相同。
S1002：第一终端排除第一候选资源集合中满足第一条件的候选资源，确定第二候选资源集合。
其中，第一条件包括位于第二终端的非激活时间内，并且与第一SCI指示的资源有重叠；第一SCI为假设第一终端在资源感知窗内没有监听的时间单元上监听到的SCI。 第一SCI的具体介绍可以参考上述S6中所述，在此不做赘述。
可以理解的，第一条件是针对第一终端在资源感知窗口内没有监听的时间单元来说的，假设第一终端在没有监听的时间单元上监听到了第一SCI，并且第一候选资源集合中的某个候选资源与第一SCI指示的资源有重叠，并且该候选资源位于第二终端的非激活时间内，则将该候选资源排除掉，即第二候选资源集合中不包括该候选资源。也就是说，通过第一条件，第一终端可以将第一候选资源集合中位于第二终端的非激活时间内，并且与第一SCI指示的资源有重叠的候选资源排除掉。或者说，通过第一条件，第一终端设备排除第一候选资源集合中的非激活时间内的候选资源，不排除第一候选资源集合中的激活时间内的候选资源，得到第二候选资源集合。其中，候选资源位于第二终端的非激活时间内可以理解为候选资源的部分或全部时间单元位于第二终端的非激活时间内。
可选的，S1002之后，第一终端排除第二候选资源集合中满足第二条件的候选资源，确定第三候选资源集合。后续，第一终端的物理层可以向第一终端的MAC层发送第三候选资源集合。或者说，第一终端的物理层可以向第一终端的MAC层发送第三候选资源集合的信息，以向第一终端的MAC层指示第三候选资源集合。
其中，第二条件包括位于第二终端的非激活时间内，并且与第二SCI指示的资源有重叠，并且对应的RSRP大于或等于第一临界值。第二SCI为第一终端在资源感知窗内接收到的SCI。第一临界值的介绍可以参考上述对临界值A的介绍。
可以理解的，第二条件是针对终端在资源感知窗口内监听到了第二SCI来说的，若第二候选资源集合中的某个候选资源位于第二终端的非激活时间内，并且该候选资源与第二SCI指示的资源有重叠，并且该候选资源对应的RSRP的测量值大于或等于第一临界值，则将该候选资源排除掉，即第三候选资源集合中不包括该候选资源。
可选的，S1002之后，第一终端可以通过前文所述的S7-S9所示的方法，确定第四候选资源集合。后续，第一终端的物理层可以向第一终端的MAC层发送第四候选资源集合。或者说，第一终端的物理层可以向第一终端的MAC层发送第四候选资源集合的信息，以向第一终端的MAC层指示第四候选资源集合。
基于图10所示方法，第一终端在排除第一候选资源集合中的候选资源时，不排除位于第二终端的激活时间内的候选资源。如此，可以使得第二候选资源集合中包括位于第二终端的激活时间内的候选资源，以便第二终端可以接收到第一终端发送的数据。
其中，上述S1001-S1002中的第一终端的动作可以由图4所示的通信装置40中的处理器401调用存储器403中存储的应用程序代码来执行，本申请实施例对此不做任何限制。
除了上述图5、图9和图10所示的方法之外，第一终端在排除候选资源时，可以为资源选择窗内第二终端的激活时间内的候选资源单独确定一个候选资源集合，对该候选资源集合中的候选资源进行排除，以使得该候选资源集合中保留一定数量的候选资源。如此，可以使得第一终端最终确定的候选资源集合中包括位于第二终端激活时间内的候选资源。具体的，可以参考下述图11所示的方法。
如图11所示，为本申请实施例提供的又一种确定候选资源集合的方法，该方法包括S1101-S1103。
S1101：第一终端确定第一候选资源集合和第二候选资源集合。
一种可能的实现方式，第一终端的物理层确定第一候选资源集合和第二候选资源集合。
其中，第一终端可以为图3所示通信系统30中的任一终端。例如，第一终端可以为终端301、终端302或终端303。
一种可能的实现方式，第一候选资源集合为资源选择窗内第二终端的激活时间内的候选资源的集合。也就是说，第一终端可以为资源选择窗内第二终端的激活时间内的候选资源单独确定一个候选资源集合。第一候选资源集合中的候选资源都位于资源选择窗内的第二终端的激活时间内。
其中，第一候选资源集合中的候选资源可以包括第一时间单元对应的至少一个频域单元。第一时间单元为资源选择窗内、位于第二终端的激活时间内的多个时间单元中的一个。例如，第一候选资源集合中的候选资源包括一个时隙下的连续L subCH个子信道，该一个时隙位于资源选择窗中，并且该一个时隙位于第二终端的激活时间内。第二终端为与第一终端通信连接的终端，第一终端确定了用于向第二终端发送数据的可用资源后，可以通过该可用资源向第二终端发送数据。以图3所示的通信系统30为例，若第一终端为终端301，则第二终端可以为终端302或终端303。
一种可能的实现方式，第二终端的激活时间为MAC层触发物理层进行资源选择时，所指示的接收终端的激活时间。
一种可能的实现方式，第二终端的激活时间为MAC层触发物理层进行资源选择时，所指示的激活时间，也就是说，第二终端的激活时间可以替换为MAC层指示的激活时间。
一种可能的实现方式，第二终端的数量可以是一个或多个，此时第二终端的激活时间为一个或多个终端的激活时间的并集。
一种可能的实现方式，第二候选资源集合可以至少有以下4种设计：
设计1：第二候选资源集合为资源选择窗内的候选资源的集合。也就是说，第二候选资源集合中的候选资源位于资源选择窗内。在这种情况下，第二候选资源集合中的候选资源可以包括第二时间单元对应的至少一个频域单元。第二时间单元为资源选择窗内的多个时间单元中的一个。例如，第二候选资源集合中的候选资源包括一个时隙下的连续L subCH个子信道，该一个时隙位于资源选择窗中。
可以理解的，对于上述设计1，考虑到HARQ RTT和链式预留(SCI指示下一个传输待使用的资源)，第一终端确定第二候选资源集合，可以使得第一终端最终确定的候选资源集合中的候选资源占据第二候选资源集合中的候选资源的一定比例，让第一终端的MAC有选择资源的余地。
设计2：第二候选资源集合为第一时间窗内的候选资源的集合。其中，第一时间窗的起始位置为资源选择窗内第二终端的激活时间的起始位置，第一时间窗的结束位置为资源选择窗的结束位置。也就是说，第二候选资源集合中的候选资源位于第一时间窗内。在这种情况下，第二候选资源集合中的候选资源可以包括第二时间单元对应的至少一个频域单元。第二时间单元为第一时间窗内的多个时间单元中的一个。例如，第二候选资源集合中的候选资源包括一个时隙下的连续L subCH个子信道，该一个时隙位 于第一时间窗内。
设计3：第二候选资源集合为资源选择窗内第二终端的非激活时间内的候选资源的集合。也就是说，第二候选资源集合中的候选资源位于资源选择窗内的第二终端的非激活时间内。在这种情况下，第二候选资源集合中的候选资源可以包括第三时间单元对应的至少一个频域单元。第三时间单元为资源选择窗内、位于第二终端的非激活时间内的多个时间单元中的一个。例如，第二候选资源集合中的候选资源包括一个时隙下的连续L subCH个子信道，该一个时隙位于资源选择窗中，并且该一个时隙位于第二终端的非激活时间内。
设计4：第二候选资源集合为第一时间窗内第二终端的非激活时间内的候选资源的集合。第一时间窗的介绍可以参考上述设计2中所述。也就是说，第二候选资源集合中的候选资源位于第一时间窗内的第二终端的非激活时间内。也就是说，第二候选资源集合中的候选资源位于资源选择窗内，激活时间的起始位置后的第二终端的非激活时间中内。在这种情况下，第二候选资源集合中的候选资源可以包括第四时间单元对应的至少一个频域单元。第四时间单元为第一时间窗内、位于第二终端的激活时间的起始位置后、位于第二终端的非激活时间内的多个时间单元中的一个。例如，第二候选资源集合中的候选资源包括一个时隙下的连续L subCH个子信道，该一个时隙位于第一时间窗中，并且该一个时隙位于第二终端的非激活时间内。
可以理解的，第一终端在第二终端的激活时间发送初传，在第二终端的激活时间或非激活时间发送重传，所以资源选择窗内第二终端的激活时间的起始位置之前的资源对于初传是不可使用的。而重传资源通常是在初传资源的后面，所以资源选择窗内第二终端的激活时间的起始位置之前的资源对于重传也是不可使用的。因此，对于设计2和设计4，第二候选资源集合中的候选资源可以不包括资源选择窗内第二终端的激活时间的起始位置之前的资源，可以使得第一终端能够在可使用的候选资源中确定初传资源和/或重传资源。另外，设计2是将第一时间窗当作一个整体来看，对于第二终端的激活时间内的候选资源和第二终端的非激活时间内的候选资源的干扰程度的标准是相同的。从这个角度来看，设计2优于设计4。
可以理解的，第一候选资源集合中的候选资源可以用于第一终端选择初传的资源。对于设计1和设计2，第二候选资源集合中的候选资源可以用于第一终端选择初传资源和/或重传资源。对于设计3和设计4，第二候选资源集合中的候选资源可以用于第一终端选择重传资源。
一种可实现的方式中，激活时间包含当前的激活时间和未来的激活时间，未来的激活时间是根据初传的资源所指示的重传的资源确定的或者是根据前一次传输的资源所指示的下一次传输的资源确定的。因此第二终端的激活时间也可以理解为第二终端的当前的激活时间。这样第一终端可以在当前的激活时间选择初传的资源。
可以理解的，对于上述设计3和设计4，第一终端是根据第二终端的激活时间和第二终端的非激活时间确定第一候选资源集合和第二候选资源集合的。这是因为，考虑到HARQ RTT和链式预留(SCI指示下一个传输待使用的资源)，第一终端分别确定第一候选资源集合和第二候选资源集合，可以使得第一终端最终确定的候选资源集合中、位于第二终端的激活时间内的候选资源和位于第二终端的非激活时间内的候选 资源都能占据一定的比例，为第一终端的MAC层确定初传资源和/或重传资源留有选择余地。另外，还可以使得第一终端最终确定的候选资源集合中的候选资源在第一候选资源集合中的候选资源和第二候选资源集合中的候选资源的总和中占据一定比例，让第一终端的MAC层有选择资源的余地。
S1101中的资源选择窗的介绍可以参考上述S501中对应的描述，在此不做赘述。
可以理解的，上述第一候选资源集合对应的资源感知窗和资源选择窗对应的资源感知窗相同。上述三种设计的第二候选资源集合对应的资源感知窗和资源选择窗对应的资源感知窗相同。资源感知窗的确定方法可以参考上述S3中所述。
S1102：第一终端从第一候选资源集合中选择候选资源，得到第三候选资源集合。
一种可能的实现方式，第一终端的物理层从第一候选资源集合中选择候选资源，得到第三候选资源集合。
第一终端可以通过以下两种方法中的任一种方法确定第三候选资源集合：
方法1：第一终端排除第一候选资源集合中满足第一条件的候选资源，确定第五候选资源集合，排除第五候选资源集合中满足第二条件的候选资源，确定第三候选资源集合。
其中，第一条件包括与第一SCI指示的资源有重叠。第一SCI是假设第一终端在资源感知窗内没有监听的时间单元上监听到的SCI。第二条件包括与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于等于第一临界值。第二SCI为第一终端在资源感知窗内接收到的侧行链路控制信息。第一SCI的介绍可以参考上述S6中对第一SCI的描述，第二SCI的介绍可以参考上述S8中对第二SCI的描述，第一临界值的介绍可以参考上述对临界值A的介绍，在此不做赘述。
在一种可能的设计中，第一终端排除第一候选资源集合中满足第一条件的候选资源，确定第五候选资源集合，包括：第一终端排除第一候选资源集合中满足第一条件的候选资源，确定第一中间集合；若第一中间集合中候选资源的数量小于第一阈值，则第一终端将第一候选资源集合确定为第五候选资源集合，若第一中间集合中候选资源的数量大于或等于第一阈值，则第一终端将第一中间集合确定为第五候选资源集合。
其中，第一阈值为第一比例与第一候选资源集合中候选资源的数量之积。第一比例大于或等于0并且小于1。
在一种可能的设计中，第一终端排除第五候选资源集合中满足第二条件的候选资源，确定第三候选资源集合，包括：第一终端排除第五候选资源集合中满足第二条件的候选资源，确定第二中间集合；若第二中间集合中候选资源的数量小于第二阈值，则第一终端排除第五候选资源集合中满足第三条件的候选资源，确定第三候选资源集合，若第二中间集合中候选资源的数量大于或等于第二阈值，则第一终端将第二中间集合确定为第三候选资源集合。
其中，第三条件包括与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于等于第二临界值。第二临界值大于第一临界值。例如，第二临界值＝第一临界值+XdB。X为正整数，如X可以为1、3、4、5、6等。即第一终端排除第五候选资源集合中满足第二条件的候选资源，确定第二中间集合；若第二中间集合中候选资源的数量小于第二阈值，则第一终端提高RSRP阈值重新进行资源排除。第二阈值为第二比 例与第一候选资源集合中候选资源的数量之积。第二比例大于或等于0并且小于1。
一种可能的实现方式，第一比例和第二比例可以是独立配置的。或者说，第一比例和第二比例可以相同也可以不同。
可选的，第一比例是网络设备(如基站)通过无线资源控制(radio resource control，RRC)信令配置的。第一比例是基于资源池配置的。进一步，第一比例可以是10％，20％，35％，50％中的一个。
可选的，第一比例大于第二比例。
方法2：第一终端排除第一候选资源集合中满足第二条件的候选资源，确定第三候选资源集合。其中，第二条件包括与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于等于第一临界值。第二SCI为第一终端在资源感知窗内接收到的侧行链路控制信息。也就说，在方法2中，第一终端不考虑未监听的时间单元上是否有SCI，但是会考虑资源感知窗内监听到的第二SCI，根据资源感知窗内的感知结果在第一候选资源集合中排除候选资源。第一终端排除第一候选资源集合中满足第二条件的候选资源，确定第三候选资源集合的过程，与上述方式1中第一终端排除第五候选资源集合中满足第二条件的候选资源，确定第三候选资源集合的过程类似，因此，可以参考上述方式1中对应的描述，在此不做赘述。
S1103：第一终端从第二候选资源集合中选择候选资源，得到第四候选资源集合。
一种可能的实现方式，第一终端的物理层从第二候选资源集合中选择候选资源，得到第四候选资源集合。
第一终端可以通过以下两种方法中的任一种方法确定第四候选资源集合：
方法3：第一终端排除第二候选资源集合中满足第一条件的候选资源，确定第六候选资源集合，排除第六候选资源集合中满足第二条件的候选资源，确定第四候选资源集合。其中，第一条件和第二条件的介绍可以参考上述方法1中所述。
在一种可能的设计中，第一终端排除第二候选资源集合中满足第一条件的候选资源，确定第六候选资源集合，包括：第一终端排除第二候选资源集合中满足第一条件的候选资源，确定第三中间集合；若第三中间集合中候选资源的数量小于第三阈值，则第一终端将第二候选资源集合确定为第六候选资源集合，若第三中间集合中候选资源的数量大于或等于第三阈值，则第一终端将第三中间集合确定为第六候选资源集合。
其中，第三阈值为第三比例与第二候选资源集合中候选资源的数量之积。第三比例大于或等于0并且小于1。
在一种可能的设计中，第一终端排除第六候选资源集合中满足第二条件的候选资源，确定第四候选资源集合，包括：第一终端排除第六候选资源集合中满足第二条件的候选资源，确定第四中间集合；若第四中间集合中候选资源的数量小于第四阈值，则第一终端排除第六候选资源集合中满足第四条件的候选资源，确定第四候选资源集合，若第四中间集合中候选资源的数量大于或等于第四阈值，则第一终端将第四中间集合确定为第四候选资源集合。
其中，第四条件包括与第二SCI指示的资源有重叠，并且对应的RSRP的测量值大于等于第三临界值。第三临界值大于第一临界值。例如，第三临界值＝第一临界值+YdB。Y为正整数，如Y可以为1、3、4、5、6等。即第一终端排除第六候选资源集 合中满足第二条件的候选资源，确定第四中间集合；若第四中间集合中候选资源的数量小于第四阈值，则第一终端提高RSRP阈值重新进行资源排除。第四阈值为第四比例与第二候选资源集合中候选资源的数量之积。第四比例大于或等于0并且小于1。
一种可能的实现方式，第三比例和第四比例可以是独立配置的。或者说，第三比例和第四比例可以相同也可以不同。
可选的，第三比例是网络设备(如基站)通过RRC信令配置的。第三比例是基于资源池配置的。进一步，第三比例可以是10％，20％，35％，50％中的一个。
可选的，第三比例大于第四比例。
一种可能的实现方式，第一比例和第三比例是单独配置的两个参数。
一种可能的实现方式，第一比例和第三比例是联合配置的两个参数。
一种可能的实现方式，第一比例是配置第三比例的参数的取值中的最小值。
一种可能的实现方式，第一比例小于第三比例。此时第二候选资源集合是设计1或设计2(即第二候选资源集合包含第二终端的激活时间内的候选资源和第二终端的非激活时间内的候选资源)。
一种可能的实现方式，第一比例等于第三比例。此时第二候选资源集合是设计3或设计4(即第二候选资源集合包含第二终端的非激活时间内的候选资源，不包含第二终端的激活时间内的候选资源)。
可以理解的，第一候选资源集合中的候选资源与第二候选资源集合中的候选资源受到干扰的程度可能不同，因此，第一比例和第三比例是单独配置的，和/或，第二比例和第四比例是单独配置的。或者说，第一比例和第三比例可以相同或不同，和/或，第二比例和第四比例可以相同或不同。
方法4：第一终端排除第二候选资源集合中满足第二条件的候选资源，确定第四候选资源集合。其中，第二条件的介绍可以参考上述方法1中所述。也就是说，在方法4中，第一终端不考虑未监听的时间单元上是否有SCI，但是会考虑资源感知窗内监听到的第二SCI，根据资源感知窗内的感知结果在第二候选资源集合中排除候选资源。第一终端排除第二候选资源集合中满足第二条件的候选资源，确定第四候选资源集合的过程，与上述方式3中第一终端排除第六候选资源集合中满足第二条件的候选资源，确定第四候选资源集合的过程类似，因此，可以参考上述方式3中对应的描述，在此不做赘述。
一种可能的实现方式，第三候选资源集合中候选资源和第四候选资源集合中候选资源的数量的总和大于或等于第五阈值。其中，第五阈值是第五比例与第一候选资源集合中候选资源以及第二候选资源集合中候选资源的数量的总和的乘积。第五比例大于0并且小于或等于1。如此，可以使得第三候选资源集合中候选资源和第四候选资源集合中候选资源在第一候选资源集合中候选资源以及第二候选资源集合中候选资源中占据一定比例，使得第一终端有选择资源的余地。
可选的，S1103之后，第一终端的物理层向第一终端的MAC层指示第三候选资源集合中的候选资源和第四候选资源集合中的候选资源，以便第一终端的MAC层在第三候选资源集合中的候选资源和第四候选资源集合中的候选资源中选择传输资源。
一种可能的实现方式，第一终端确定了第三候选资源集合和第四候选资源集合。 第一终端向MAC层上报第三候选资源集合和第四候选资源集合。
一种可能的实现方式，第一终端确定了第三候选资源集合和第四候选资源集合。对两个集合取并集。第一终端向MAC层上报该并集。
基于图11所示方法，第一终端可以确定第一候选资源集合和第二候选资源集合，分别在第一候选资源集合和第二候选资源集合中选择候选资源，得到第三候选资源集合和第四候选资源集合。如此，可以使得第一候选资源集合中的候选资源在第三候选资源集合中占据一定比例，使得第二候选资源集合中的候选资源在第四候选资源集合中占据一定比例，以便第一终端选择可用的传输资源。而且在第三候选集合中选择用于初传的资源，可以保证第二终端接收到第一终端所发送的数据。
其中，上述S1101-S1103中的第一终端的动作可以由图4所示的通信装置40中的处理器401调用存储器403中存储的应用程序代码来执行，本申请实施例对此不做任何限制。
如图12所示，为本申请实施例提供的一种数据传输方法，该方法包括S1201-S1203。
S1201：第一终端获取第一资源集合。
一种可能的实现方式，第一终端的MAC层获取第一资源集合。
其中，第一终端可以为图3所示通信系统30中的任一终端。例如，第一终端可以为终端301、终端302或终端303。第一资源集合包括至少一个第一资源。第一资源位于第二终端的激活时间内的候选资源，第一资源用于第一终端向第二终端发送第一数据。第二终端为与第一终端通信连接的终端。以图3所示的通信系统30为例，若第一终端为终端301，则第二终端可以为终端302或终端303。
一种可能的实现方式，第二终端的激活时间为MAC层触发物理层进行资源选择时，所指示的接收终端的激活时间。
一种可能的实现方式，第二终端的激活时间为MAC层触发物理层进行资源选择时，所指示的激活时间，也就是说，第二终端的激活时间可以替换为MAC层指示的激活时间。
一种可能的实现方式，第二终端的数量可以是一个或多个，此时第二终端的激活时间为一个或多个终端的激活时间的并集。
一种可能的实现方式，第一终端获取第一资源集合，包括：第一终端获取候选资源集合，根据第二终端的激活时间在候选资源集合中选择候选资源，得到第一资源集合。
作为一种示例，第一终端的MAC层从第一终端的物理层获取候选资源集合，将候选资源集合中位于第二终端激活时间内的候选资源，确定为第一资源集合中的第一资源。第一终端获取第一资源集合的过程也可以称为创建侧行链路授权(sidelink grant)。
可以理解的，第一终端的MAC层可以在第二终端的激活时间内选择初传资源，尽可能在第二终端的激活时间内选择重传资源，具体如何选择可用取决于第一终端实现。
一种可能的实现方式，候选资源集合可以是图5所示方法、图9所示方法或图10所示方法中的第三候选资源集合，或者是图11所示方法中的第三候选资源集合和第四候选资源集合的并集。
一种可能的实现方式，第一数据在第一终端的多个逻辑信道对应的数据中、优先级最高，或者，第一数据在第一终端的多个媒体接入控制-控制元素(medium access control control element，MAC-CE)对应的数据中、优先级最高。或者第一数据在第一终端的多个逻辑信道或MAC-CE对应的数据中、优先级最高。
S1202：第一终端获取第二数据。
一种可能的实现方式，第一终端的MAC层获取第二数据(也可以理解为，MAC层确定当前多个逻辑信道或MAC-CE中优先级最高的逻辑信道或MAC CE)。
其中，第二数据的优先级高于第一数据的优先级，也就是说，S1202后，第二数据在第一终端的多个逻辑信道对应的数据中、优先级最高，或者，第二数据在第一终端的多个MAC-CE对应的数据中、优先级最高。第二数据为第一终端向第三终端发送的数据。第三终端与所述第二终端不同。以图3所示的通信系统30为例，若第一终端为终端301，第二终端为终端302，则第三终端可以为终端303。
S1203：第一终端根据第一资源集合和第三终端的激活时间，确定接收数据的终端。
一种可能的实现方式，第一终端的MAC层根据第一资源集合和第三终端的激活时间，确定接收数据的终端。
可以理解的，第一终端在进行逻辑信道优先级化(logical channel prioritization，LCP)的过程中，获取到了优先级高于第一数据的第二数据，所以第一终端对应的接收终端发生了改变，或者说，第一终端的目的(destination)终端发生了改变，从第二终端变为了第三终端。因为第三终端的激活时间和第二终端的激活时间可能不同，所以第一资源集合中的资源可能不适合第三终端，第一终端可能无法在第一资源集合中为第三终端选择传输资源，也就无法向第三终端发送第二数据。在这种情况下，第一终端可以通过以下可能的实现方式确定接收数据的终端，从而向接收数据的终端发送数据。
一种可能的实现方式，若第一资源集合中的第一个资源位于第三终端的激活时间内，则第一终端使用第一个资源向第三终端发送第二数据。如此，可以在第一资源集合中的第一个资源上发送优先级最高的数据(即第二数据)，避免增加高优先级业务的时延。
一种可能的实现方式，若第一资源集合中的第一个资源没有位于第三终端的激活时间内，则第一终端使用第一个资源向第二终端发送第一数据。可以理解的，当前优先级最高的数据(即第三数据)对应的接收终端(即第三终端)在第一个资源处于非激活时间。若第一终端使用这个资源向第三终端发送第二数据，第三终端是无法接收数据的，而第一个资源是由第一数据所触发的资源选择过程中所选择的候选资源，因此，虽然第一数据不是优先级最高的数据，但是第一终端可以在第三终端无法在第一个资源上接收第二数据的情况下，向第二终端发送第一数据。
一种可能的实现方式，若第一资源集合中的第一个资源没有位于第三终端的激活时间内，则第一终端使用第一个资源向第四终端发送第三数据。其中，第三数据对应的优先级在第一个资源上处于激活时间的多个接收终端对应的待发送的数据中最高。可以理解的，当前优先级最高的数据(即第三数据)对应的接收终端(即第三终端)在第一个资源上处于非激活时间。若第一终端使用这个资源向第三终端发送第二数据， 第三终端是无法接收数据的。因此，第一终端可以在第一个资源上处于激活时间的多个接收终端对应的待发送的数据中，确定优先级最高的数据，并在第一个资源上发送该数据。如此，第一终端可以在优先级最高的待发送数据对应的接收终端在第一个资源上处于非激活时间的情况下，向待发送数据中、优先级第二高的数据对应的接收终端发送数据，以保证优先级较高的数据的传输可靠性。
一种可能的实现方式，若第一资源集合中的第一个资源没有位于第三终端的激活时间内，并且第一资源集合中有资源位于第三终端的激活时间内，则第一终端使用第一资源集合中的资源向第三终端发送第二数据。可以理解的，第一终端通常在第一个资源上发送优先级最高的待发送数据(即第二数据)，如果优先级最高的待发送数据对应的接收终端(即第三终端)在第一个资源上处于非激活时间，那就可以使用第一资源集合中的第一个资源之后的资源向该接收终端发送数据，以保证第一终端向该接收终端发送的数据可以使用第一资源集合中的资源，不需要重新触发资源选择。
一种可能的实现方式，若第一资源集合中的资源没有位于第三终端的激活时间内，则第一终端通过第一个资源向第四终端发送第三数据。其中，第三数据对应的优先级在第一个资源上处于激活时间的多个接收终端对应的待发送的数据中最高。可以理解的，当前优先级最高的数据(即第三数据)对应的接收终端(即第三终端)在第一资源集合中的资源上处于非激活时间。若第一终端使用第一资源集合中的资源向第三终端发送第二数据，第三终端是无法接收数据的。因此，第一终端可以在第一个资源上处于激活时间的多个接收终端对应的待发送的数据中，确定优先级最高的数据，并在第一个资源上发送该数据。如此，第一终端可以在优先级最高的待发送数据对应的接收终端在第一资源激活中的资源上处于非激活时间的情况下，向待发送数据中、优先级第二高的数据对应的接收终端发送数据，以保证优先级较高的数据的传输可靠性。
一种可能的实现方式，第一终端根据第三终端的激活时间在候选资源集合中选择候选资源，得到第二资源集合。其中，第二资源集合中的资源位于第三终端的激活时间内。后续，第一终端可以在第二资源集合中的资源上向第三终端发送第二数据。也就是说，第一终端可以根据第三终端的激活时间重新创建一个sidelink grant，或者为sidelink grant重新在候选资源集合中选择为第三终端初传或重传的资源，使得优先级最高的数据(即第二数据)可以优先发送，避免增加高优先级业务的时延。
基于图12所示方法，第一终端在获取了第一数据对应的第一资源集合，获取了优先级高于第一数据的第二数据后，可以根据第一资源集合中的资源与第三终端的激活时间，确定接收数据的终端，使得第一终端可以合理安排发送数据的顺序。
其中，上述S1201-S1203中的第一终端的动作可以由图4所示的通信装置40中的处理器401调用存储器403中存储的应用程序代码来执行，本申请实施例对此不做任何限制。
可以理解的，对于S501-S503，S1001-S1002，S901-S902，S1201-S1203中的各个步骤之间可以并行或串行的使用。例如，S501-S503后可以执行S1201-S1203。S901-S902后可以执行S1201-S1203，S1001-S1002后可以执行S1201-S1203。另外对各个实施例中的概念的描述可通用。
可以理解的，以上各个实施例中，由第一终端实现的方法和/或步骤，也可以由可 用于第一终端的部件(例如芯片或者电路)实现。
本申请实施例还提供了通信装置，该通信装置可以为上述方法实施例中的第一终端，或者包含上述第一终端的装置，或者为可用于第一终端的部件。可以理解的是，上述第一终端等为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法操作，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对第一终端进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
比如，以采用集成的方式划分各个功能模块的情况下，图13示出了一种通信装置130的结构示意图。通信装置130包括处理模块1301。
示例性地，通信装置130用于实现第一终端的功能。通信装置130例如为图5所示的实施例所述的第一终端。
其中，处理模块1301，用于确定第一候选资源集合，第一候选资源集合为资源选择窗内的候选资源的集合，候选资源包括第一时间单元对应的至少一个频域单元，第一时间单元为资源选择窗内的多个时间单元中的一个，第一候选资源集合包括至少一个第一候选资源，第一候选资源为资源选择窗内位于第二终端的激活时间内的候选资源。
处理模块1301，还用于排除第一候选资源集合中满足第一条件的候选资源，确定第二候选资源集合。
处理模块1301，还用于若在第二候选资源集合中，第一候选资源的数量小于或等于第一阈值，则确定第三候选资源集合，第三候选资源集合包括第二候选资源集合所包含的候选资源和被排除的候选资源中的至少一个第一候选资源，第三候选资源集合包含的第一候选资源的数量大于或等于第一阈值。
在一种可能的实现方式中，第一条件包括与第一侧行链路控制信息指示的资源有重叠，第一侧行链路控制信息是假设第一终端在资源感知窗内没有监听的时间单元上监听到的侧行链路控制信息。
在一种可能的实现方式中，第一侧行链路控制信息指示的频域资源为资源池内全部频域单元，第一侧行链路控制信息指示的资源预留周期为配置在资源池上的资源预留周期中的一个。
在一种可能的实现方式中，处理模块1301，具体用于排除第一候选资源集合中满足第二条件的候选资源，确定第三候选资源，第二条件包括位于第二终端的非激活时间内，并且与第一侧行链路控制信息指示的资源有重叠。
在一种可能的实现方式中，处理模块1301，具体用于选择被排除的候选资源中的 至少一个第一候选资源，确定为第三候选资源集合中的候选资源。
在一种可能的实现方式中，至少一个第一候选资源为在被排除的第一候选资源中随机确定的；或者，至少一个第一候选资源为被排除的第一候选资源中时域位置靠前的N个第一候选资源，N为正整数。
在一种可能的实现方式中，第一条件包括与第二侧行链路控制信息指示的资源有重叠，并且对应的参考信号接收功率RSRP的测量值大于或等于第一临界值，第二侧行链路控制信息为第一终端在资源感知窗内接收到的侧行链路控制信息。
在一种可能的实现方式中，处理模块1301，具体用于排除第一候选资源集合中满足第三条件的候选资源，确定第三候选资源集合，第三条件包括位于第二终端的激活时间内，与第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第二临界值，以及位于第二终端的非激活时间内，与第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第一临界值，第二临界值大于第一临界值。
在一种可能的实现方式中，处理模块1301，具体用于在被排除的第一候选资源中按照RSRP测量值从高到低的顺序选择M个第一候选资源，确定M个第一候选资源为第三候选资源集合中的候选资源，M为正整数。
在一种可能的实现方式中，第一阈值为第一比例与第一时间窗内的候选资源的数量之积，第一比例大于或等于0并且小于1。
在一种可能的实现方式中，第一时间窗为资源选择窗；或者，第一时间窗的时域起始位置为资源选择窗内、第二终端的激活时间的起始位置，第一时间窗的时域结束位置为资源选择窗的时域结束位置；或者，第一时间窗的时域起始位置为资源选择窗内、第二终端的激活时间的起始位置，第一时间窗的时域结束位置为资源选择窗内、第二终端的激活时间的时域结束位置。
在一种可能的实现方式中，资源选择窗的时域起始位置为n+T 1，资源选择窗的时域结束位置为n+T 2，或者，资源选择窗的时域起始位置为n+T 3，资源选择窗的时域结束位置为n+T 2；
其中，第一终端在时间单元n被触发进行资源选择，T 1和T 2是正整数，T 3为在n+T 1之后，第二终端的激活时间的时域起始位置。
在一种可能的实现方式中，处理模块1301，还用于获取第二终端的激活时间。
在一种可能的实现方式中，处理模块1301，具体用于获取第一指示信息，第一指示信息用于指示第二终端的激活时间的时域位置；处理模块1301，还具体用于根据第一指示信息，确定第二终端的激活时间。
在一种可能的实现方式中，第一指示信息包括至少一组第二终端的激活时间的时域起始位置和第二终端的激活时间的长度；或者，第一指示信息包括至少一组第二终端的激活时间的时域起始位置和时域结束位置；或者，第一指示信息包括m比特，m比特与m个时间单元对应，每个比特的值用于指示比特对应的时间单元是否位于第二终端的激活时间内。
在一种可能的实现方式中，若第一指示信息包括m个比特，在第一时间单元内，第二终端的激活时间所在的符号与物理侧行链路控制信道PSCCH所在的符号不完全 重叠，则第一时间单元位于第二终端的非激活时间内，第一时间单元为m个时间单元中的任意一个。
当用于实现第一终端的功能时，关于通信装置130所能实现的其他功能，可参考图5所示的实施例的相关介绍，不多赘述。
或者，示例性地，通信装置130用于实现第一终端的功能。通信装置130例如为图9所示的实施例所述的第一终端。
其中，处理模块1301，用于排除第一候选资源集合中满足第一预设条件的候选资源，确定第二候选资源集合。
其中，第一候选资源集合为资源选择窗内的候选资源的集合，候选资源包括第一时间单元对应的至少一个频域单元，第一时间单元为资源选择窗内的多个时间单元中的一个，第一候选资源集合包括至少一个第一候选资源，第一候选资源为资源选择窗内位于第二终端的激活时间内的候选资源，第一预设条件包括与第二侧行链路控制信息指示的资源有重叠，并且对应的参考信号接收功率RSRP的测量值大于或等于第一临界值，第二侧行链路控制信息为第一终端在资源感知窗内接收到的侧行链路控制信息。
处理模块1301，还用于根据第二候选资源集合中的候选资源的数量，以及第二候选资源集合中第一候选资源的数量，确定第三候选资源集合，第三候选资源集合包括至少一个第一候选资源，第三候选资源集合中的候选资源的数量大于或等于第一阈值。
在一种可能的实现方式中，处理模块1301，具体用于若第二候选资源集合中的候选资源的数量小于第一阈值，并且第二候选资源集合中的第一候选资源的数量小于第二阈值，则选择被排除的候选资源中的至少一个第一候选资源，确定为第三候选资源集合中的候选资源。
在一种可能的实现方式中，至少一个第一候选资源为在被排除的第一候选资源中随机确定的；或者，将被排除的第一候选资源按照RSRP测量值从高到低的顺序选择的M个第一候选资源，确定为第三候选资源集合中的候选资源，M为正整数。
在一种可能的实现方式中，处理模块1301，具体用于若第二候选资源集合中的候选资源的数量小于第一阈值，并且第二候选资源集合中的第一候选资源的数量小于第二阈值，则排除第一候选资源集合中满足第二预设条件的候选资源，确定第三候选资源集合，第二预设条件包括位于第二终端的激活时间内，与第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第二临界值，以及位于第二终端的非激活时间内，与第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第一临界值，第二临界值大于第一临界值。
在一种可能的实现方式中，处理模块1301，具体用于若第二候选资源集合中的候选资源的数量小于第一阈值，并且第二候选资源集合中的第一候选资源的数量大于或等于第二阈值，则排除第一候选资源集合中满足第三预设条件的候选资源，确定第三候选资源集合，第三预设条件包括与第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第三临界值，第三临界值大于第一临界值。
在一种可能的实现方式中，处理模块1301，具体用于若第二候选资源集合中的候选资源的数量大于或等于第一阈值，并且第二候选资源集合中的第一候选资源的数量 小于第二阈值，则排除第一候选资源集合中满足第四预设条件的候选资源，确定第三候选资源集合；第四预设条件包括位于第二终端的非激活时间内，与第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第一临界值，或者，第四预设条件包括位于第二终端的激活时间内，并且与第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第四临界值，以及位于第二终端的非激活时间内，并且与第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第一临界值，第四临界值大于第一临界值。
在一种可能的实现方式中，处理模块1301，具体用于若第二候选资源集合中的候选资源的数量大于或等于第一阈值，并且第二候选资源集合中的第一候选资源的数量小于第二阈值，则确定第一候选资源集合中的至少一个第一候选资源为第三候选资源集合中的候选资源。
当用于实现第一终端的功能时，关于通信装置130所能实现的其他功能，可参考图9所示的实施例的相关介绍，不多赘述。
或者，示例性地，通信装置130用于实现第一终端的功能。通信装置130例如为图10所示的实施例所述的第一终端。
其中，处理模块1301，用于确定第一候选资源集合。
其中，第一候选资源集合为资源选择窗内的候选资源的集合，候选资源包括第一时间单元对应的至少一个频域单元，第一时间单元为资源选择窗内的多个时间单元中的一个，第一候选资源集合包括至少一个第一候选资源，第一候选资源为资源选择窗内位于第二终端的激活时间内的候选资源。
处理模块1301，还用于排除第一候选资源集合中满足第一条件的候选资源，确定第二候选资源集合。
其中，第一条件包括位于第二终端的非激活时间内，并且与第一侧行链路控制信息指示的资源有重叠；第一侧行链路控制信息为假设第一终端在资源感知窗内没有监听的时间单元上监听到的侧行链路控制信息。
在一种可能的实现方式中，处理模块1301，还用于排除第二候选资源集合中满足第二条件的候选资源，确定第三候选资源集合；第二条件包括位于第二终端的非激活时间内，并且与第二侧行链路控制信息指示的资源有重叠，并且对应的参考信号接收功率大于或等于第一临界值，第二侧行链路控制信息为第一终端在资源感知窗内接收到的侧行链路控制信息。
当用于实现第一终端的功能时，关于通信装置130所能实现的其他功能，可参考图10所示的实施例的相关介绍，不多赘述。
或者，示例性地，通信装置130用于实现第一终端的功能。通信装置130例如为图11所示的实施例所述的第一终端。
其中，处理模块1301，用于确定第一候选资源集合和第二候选资源集合。
其中，第一候选资源集合为资源选择窗内第二终端的激活时间内的候选资源的集合，第二候选资源集合为资源选择窗内的候选资源的集合，或者，第二候选资源集合为资源选择窗内第二终端的非激活时间内的候选资源的集合，或者，第二候选资源集合为第一时间窗内的候选资源的集合，第一时间窗的起始位置为资源选择窗内第二终 端的激活时间的起始位置，第一时间窗的结束位置为资源选择窗的结束位置。
处理模块1301，还用于从第一候选资源集合中选择候选资源，得到第三候选资源集合。
处理模块1301，还用于从第二候选资源集合中选择候选资源，得到第四候选资源集合。
在一种可能的实现方式中，处理模块1301，具体用于排除第一候选资源集合中满足第一条件的候选资源，确定第五候选资源集合，第一条件包括与第一侧行链路控制信息指示的资源有重叠，第一侧行链路控制信息是假设第一终端在资源感知窗内没有监听的时间单元上监听到的侧行链路控制信息；处理模块1301，还具体用于排除第五候选资源集合中满足第二条件的候选资源，确定第三候选资源集合，第二条件包括与第二侧行链路控制信息指示的资源有重叠，并且对应的参考信号接收功率RSRP的测量值大于等于第一临界值，第二侧行链路控制信息为第一终端在资源感知窗内接收到的侧行链路控制信息。
在一种可能的实现方式中，处理模块1301，具体用于排除第一候选资源集合中满足第一条件的候选资源，确定第一中间集合；处理模块1301，还具体用于若第一中间集合中候选资源的数量小于第一阈值，则将第一候选资源集合确定为第五候选资源集合。
在一种可能的实现方式中，第一阈值为第一比例与第一候选资源集合中候选资源的数量之积，第一比例大于或等于0并且小于1。
在一种可能的实现方式中，处理模块1301，具体用于排除第五候选资源集合中满足第二条件的候选资源，确定第二中间集合；处理模块1301，还具体用于若第二中间集合中候选资源的数量小于第二阈值，则排除第五候选资源集合中满足第三条件的候选资源，确定第三候选资源集合，第三条件包括与第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于等于第二临界值，第二临界值大于第一临界值。
在一种可能的实现方式中，第二阈值为第二比例与第一候选资源集合中候选资源的数量之积，第二比例大于或等于0并且小于1。
在一种可能的实现方式中，第一比例和第二比例是独立配置的。
在一种可能的实现方式中，处理模块1301，具体用于排除第二候选资源集合中满足第一条件的候选资源，确定第六候选资源集合；处理模块1301，还具体用于排除第六候选资源集合中满足第二条件的候选资源，确定第四候选资源集合。
在一种可能的实现方式中，处理模块1301，具体用于排除第二候选资源集合中满足第一条件的候选资源，确定第三中间集合；处理模块1301，还具体用于若第三中间集合中候选资源的数量小于第三阈值，则将第二候选资源集合确定为第六候选资源集合。
在一种可能的实现方式中，第三阈值为第三比例与第二候选资源集合中候选资源的数量之积，第三比例大于或等于0并且小于1。
在一种可能的实现方式中，处理模块1301，具体用于排除第六候选资源集合中满足第二条件的候选资源，确定第四中间集合；处理模块1301，还具体用于若第四中间 集合中候选资源的数量小于第四阈值，则排除第六候选资源集合中满足第四条件的候选资源，确定第四候选资源集合，第四条件包括与第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于等于第三临界值，第三临界值大于第一临界值。
在一种可能的实现方式中，第四阈值为第四比例与第二候选资源集合中候选资源的数量之积，第四比例大于或等于0并且小于1。
在一种可能的实现方式中，第三比例与第四比例是独立配置的。
在一种可能的实现方式中，第一比例和第三比例是单独配置的，和/或，第二比例和第四比例是单独配置的。
在一种可能的实现方式中，第三候选资源集合中候选资源和第四候选资源集合中候选资源的数量的总和大于或等于第五阈值，第五阈值是第五比例与第一候选资源集合中候选资源以及第二候选资源集合中候选资源的数量的总和的乘积。
当用于实现第一终端的功能时，关于通信装置130所能实现的其他功能，可参考图11所示的实施例的相关介绍，不多赘述。
或者，示例性地，通信装置130用于实现第一终端的功能。通信装置130例如为图12所示的实施例所述的第一终端。
其中，处理模块1301，用于获取第一资源集合。其中，第一资源集合包括至少一个第一资源，第一资源用于第一终端向第二终端发送第一数据，第一数据在第一终端的多个逻辑信道对应的数据中、优先级最高，第一资源为位于第二终端的激活时间内的候选资源。
处理模块1301，还用于获取第二数据，第二数据的优先级高于第一数据的优先级，第二数据为第一终端向第三终端发送的数据，第三终端与第二终端不同。
处理模块1301，还用于根据第一资源集合和第三终端的激活时间，确定接收数据的终端。
在一种可能的实现方式中，处理模块1301，具体用于若第一资源集合中的第一个资源位于第三终端的激活时间内，则使用第一个资源向第三终端发送第二数据；或者，若第一资源集合中的第一个资源没有位于第三终端的激活时间内，则使用第一个资源向第二终端发送第一数据；或者，若第一资源集合中的第一个资源没有位于第三终端的激活时间内，则使用第一个资源向第四终端发送第三数据，第三数据对应的优先级在第一个资源上处于激活时间的多个接收终端对应的待发送的数据中最高；或者，若第一资源集合中的第一个资源没有位于第三终端的激活时间内，并且第一资源集合中有资源位于第三终端的激活时间内，则使用第一资源集合中的资源向第三终端发送第二数据；或者，若第一资源集合中的资源没有位于第三终端的激活时间内，则通过第一个资源向第四终端发送第三数据，第三数据对应的优先级在第一个资源上处于激活时间的多个接收终端对应的待发送的数据中最高。
在一种可能的实现方式中，处理模块1301，具体用于获取候选资源集合，根据第二终端的激活时间在候选资源集合中选择候选资源，得到第一资源集合；处理模块1301，还用于根据第三终端的激活时间在候选资源集合中选择候选资源，得到第二资源集合，第二资源集合中的资源位于第三终端的激活时间内。
当用于实现第一终端的功能时，关于通信装置130所能实现的其他功能，可参考图12所示的实施例的相关介绍，不多赘述。
在一个简单的实施例中，本领域的技术人员可以想到通信装置130可以采用图4所示的形式。比如，图4中的处理器401可以通过调用存储器403中存储的计算机执行指令，使得通信装置130执行上述方法实施例中所述的方法。
示例性的，图13中的处理模块1301的功能/实现过程可以通过图4中的处理器401调用存储器403中存储的计算机执行指令来实现。
需要说明的是，以上模块或单元的一个或多个可以软件、硬件或二者结合来实现。当以上任一模块或单元以软件实现的时候，所述软件以计算机程序指令的方式存在，并被存储在存储器中，处理器可以用于执行所述程序指令并实现以上方法流程。该处理器可以内置于SoC(片上系统)或ASIC，也可是一个独立的半导体芯片。该处理器内处理用于执行软件指令以进行运算或处理的核外，还可进一步包括必要的硬件加速器，如现场可编程门阵列(field programmable gate array，FPGA)、PLD(可编程逻辑器件)、或者实现专用逻辑运算的逻辑电路。
当以上模块或单元以硬件实现的时候，该硬件可以是CPU、微处理器、数字信号处理(digital signal processing，DSP)芯片、微控制单元(microcontroller unit，MCU)、人工智能处理器、ASIC、SoC、FPGA、PLD、专用数字电路、硬件加速器或非集成的分立器件中的任一个或任一组合，其可以运行必要的软件或不依赖于软件以执行以上方法流程。
可选的，本申请实施例还提供了一种芯片系统，包括：至少一个处理器和接口，该至少一个处理器通过接口与存储器耦合，当该至少一个处理器执行存储器中的计算机程序或指令时，使得上述任一方法实施例中的方法被执行。在一种可能的实现方式中，该芯片系统还包括存储器。可选的，该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件，本申请实施例对此不作具体限定。
可选的，本申请实施例还提供了一种计算机可读存储介质。上述方法实施例中的全部或者部分流程可以由计算机程序来指令相关的硬件完成，该程序可存储于上述计算机可读存储介质中，该程序在执行时，可包括如上述各方法实施例的流程。计算机可读存储介质可以是前述任一实施例的通信装置的内部存储单元，例如通信装置的硬盘或内存。上述计算机可读存储介质也可以是上述通信装置的外部存储设备，例如上述通信装置上配备的插接式硬盘，智能存储卡(smart media card，SMC)，安全数字(secure digital，SD)卡，闪存卡(flash card)等。进一步地，上述计算机可读存储介质还可以既包括上述通信装置的内部存储单元也包括外部存储设备。上述计算机可读存储介质用于存储上述计算机程序以及上述通信装置所需的其他程序和数据。上述计算机可读存储介质还可以用于暂时地存储已经输出或者将要输出的数据。
可选的，本申请实施例还提供了一种计算机程序产品。上述方法实施例中的全部或者部分流程可以由计算机程序来指令相关的硬件完成，该程序可存储于上述计算机程序产品中，该程序在执行时，可包括如上述各方法实施例的流程。
可选的，本申请实施例还提供了一种计算机指令。上述方法实施例中的全部或者部分流程可以由计算机指令来指令相关的硬件(如计算机、处理器、接入网设备、移 动性管理网元或会话管理网元等)完成。该程序可被存储于上述计算机可读存储介质中或上述计算机程序产品中。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个装置，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是一个物理单元或多个物理单元，即可以位于一个地方，或者也可以分布到多个不同地方。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (48)

  1. 一种确定候选资源集合的方法，其特征在于，应用于第一终端，所述方法包括：
    确定第一候选资源集合，所述第一候选资源集合为资源选择窗内的候选资源的集合，所述候选资源包括第一时间单元对应的至少一个频域单元，所述第一时间单元为所述资源选择窗内的多个时间单元中的一个，所述第一候选资源集合包括至少一个第一候选资源，所述第一候选资源为所述资源选择窗内位于第二终端的激活时间内的候选资源；
    排除所述第一候选资源集合中满足第一条件的候选资源，确定第二候选资源集合；
    若在所述第二候选资源集合中，所述第一候选资源的数量小于或等于第一阈值，则确定第三候选资源集合，所述第三候选资源集合包括所述第二候选资源集合所包含的候选资源和被排除的候选资源中的至少一个第一候选资源，所述第三候选资源集合包含的第一候选资源的数量大于或等于第一阈值。
  2. 根据权利要求1所述的方法，其特征在于，所述第一条件包括与第一侧行链路控制信息指示的资源有重叠，所述第一侧行链路控制信息是假设所述第一终端在资源感知窗内没有监听的时间单元上监听到的侧行链路控制信息。
  3. 根据权利要求2所述的方法，其特征在于，所述第一侧行链路控制信息指示的频域资源为资源池内全部频域单元，所述第一侧行链路控制信息指示的资源预留周期为配置在所述资源池上的资源预留周期中的一个。
  4. 根据权利要求2或3所述的方法，其特征在于，所述确定第三候选资源集合，包括：
    排除所述第一候选资源集合中满足第二条件的候选资源，确定所述第三候选资源，所述第二条件包括位于所述第二终端的非激活时间内，并且与所述第一侧行链路控制信息指示的资源有重叠。
  5. 根据权利要求2或3所述的方法，其特征在于，所述确定第三候选资源集合，包括：
    选择所述被排除的候选资源中的至少一个第一候选资源，确定为所述第三候选资源集合中的候选资源。
  6. 根据权利要求5所述的方法，其特征在于，
    所述至少一个第一候选资源为在所述被排除的第一候选资源中随机确定的；或者，
    所述至少一个第一候选资源为所述被排除的第一候选资源中时域位置靠前的N个第一候选资源，N为正整数。
  7. 根据权利要求1所述的方法，其特征在于，所述第一条件包括与第二侧行链路控制信息指示的资源有重叠，并且对应的参考信号接收功率RSRP的测量值大于或等于第一临界值，所述第二侧行链路控制信息为所述第一终端在资源感知窗内接收到的侧行链路控制信息。
  8. 根据权利要求7所述的方法，其特征在于，所述确定第三候选资源集合，包括：
    排除所述第一候选资源集合中满足第三条件的候选资源，确定所述第三候选资源集合，所述第三条件包括位于所述第二终端的激活时间内，与所述第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第二临界值，以及位 于所述第二终端的非激活时间内，与所述第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于所述第一临界值，所述第二临界值大于所述第一临界值。
  9. 根据权利要求7所述的方法，其特征在于，所述确定第三候选资源集合，包括：
    在所述被排除的第一候选资源中按照RSRP测量值从高到低的顺序选择M个第一候选资源，确定所述M个第一候选资源为所述第三候选资源集合中的候选资源，M为正整数。
  10. 根据权利要求1-9中任一项所述的方法，其特征在于，所述第一阈值为第一比例与第一时间窗内的候选资源的数量之积，所述第一比例大于或等于0并且小于1。
  11. 根据权利要求10所述的方法，其特征在于，
    所述第一时间窗为资源选择窗；或者，
    所述第一时间窗的时域起始位置为资源选择窗内、所述第二终端的激活时间的起始位置，所述第一时间窗的时域结束位置为所述资源选择窗的时域结束位置；或者，
    所述第一时间窗的时域起始位置为资源选择窗内、所述第二终端的激活时间的起始位置，所述第一时间窗的时域结束位置为所述资源选择窗内、所述第二终端的激活时间的时域结束位置。
  12. 根据权利要求1-11中任一项所述的方法，其特征在于，所述资源选择窗的时域起始位置为n+T 1，所述资源选择窗的时域结束位置为n+T 2，或者，所述资源选择窗的时域起始位置为n+T 3，所述资源选择窗的时域结束位置为n+T 2；
    其中，所述第一终端在时间单元n被触发进行资源选择，T 1和T 2是正整数，T 3为在n+T 1之后，所述第二终端的激活时间的时域起始位置。
  13. 根据权利要求1-12中任一项所述的方法，其特征在于，所述方法还包括：
    获取所述第二终端的激活时间。
  14. 根据权利要求13所述的方法，其特征在于，所述获取所述第二终端的激活时间，包括：
    获取第一指示信息，所述第一指示信息用于指示所述第二终端的激活时间的时域位置；
    根据所述第一指示信息，确定所述第二终端的激活时间。
  15. 根据权利要求14所述的方法，其特征在于，
    所述第一指示信息包括至少一组所述第二终端的激活时间的时域起始位置和所述第二终端的激活时间的长度；或者，
    第一指示信息包括至少一组所述第二终端的激活时间的时域起始位置和时域结束位置；或者，
    所述第一指示信息包括m比特，所述m比特与m个时间单元对应，每个比特的值用于指示所述比特对应的时间单元是否位于所述第二终端的激活时间内。
  16. 根据权利要求15所述的方法，其特征在于，若所述第一指示信息包括m个比特，在第一时间单元内，所述第二终端的激活时间所在的符号与物理侧行链路控制信道PSCCH所在的符号不完全重叠，则所述第一时间单元位于所述第二终端的非激活时间内，所述第一时间单元为m个时间单元中的任意一个。
  17. 一种确定候选资源集合的方法，其特征在于，应用于第一终端，所述方法包括：
    排除第一候选资源集合中满足第一预设条件的候选资源，确定第二候选资源集合，所述第一候选资源集合为资源选择窗内的候选资源的集合，所述候选资源包括第一时间单元对应的至少一个频域单元，所述第一时间单元为所述资源选择窗内的多个时间单元中的一个，所述第一候选资源集合包括至少一个第一候选资源，所述第一候选资源为所述资源选择窗内位于第二终端的激活时间内的候选资源，所述第一预设条件包括与第二侧行链路控制信息指示的资源有重叠，并且对应的参考信号接收功率RSRP的测量值大于或等于第一临界值，所述第二侧行链路控制信息为所述第一终端在资源感知窗内接收到的侧行链路控制信息；
    根据所述第二候选资源集合中的候选资源的数量，以及所述第二候选资源集合中第一候选资源的数量，确定第三候选资源集合，所述第三候选资源集合包括至少一个第一候选资源，所述第三候选资源集合中的候选资源的数量大于或等于第一阈值。
  18. 根据权利要求17所述的方法，所述第二候选资源集合中的候选资源的数量小于所述第一阈值，并且所述第二候选资源集合中的第一候选资源的数量小于第二阈值，其特征在于，所述确定第三候选资源集合，包括：
    选择被排除的候选资源中的至少一个第一候选资源，确定为所述第三候选资源集合中的候选资源。
  19. 根据权利要求18所述的方法，其特征在于，
    所述至少一个第一候选资源为在所述被排除的第一候选资源中随机确定的；或者，
    将所述被排除的第一候选资源按照RSRP测量值从高到低的顺序选择的M个第一候选资源，确定为所述第三候选资源集合中的候选资源，M为正整数。
  20. 根据权利要求17所述的方法，其特征在于，所述第二候选资源集合中的候选资源的数量小于所述第一阈值，并且所述第二候选资源集合中的第一候选资源的数量小于第二阈值，所述确定第三候选资源集合，包括：
    排除所述第一候选资源集合中满足第二预设条件的候选资源，确定所述第三候选资源集合，所述第二预设条件包括位于第二终端的激活时间内，与所述第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第二临界值，以及位于所述第二终端的非激活时间内，与所述第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第一临界值，所述第二临界值大于所述第一临界值。
  21. 根据权利要求17所述的方法，其特征在于，所述第二候选资源集合中的候选资源的数量小于所述第一阈值，并且所述第二候选资源集合中的第一候选资源的数量大于或等于第二阈值，所述确定第三候选资源集合，包括：
    排除所述第一候选资源集合中满足第三预设条件的候选资源，确定所述第三候选资源集合，所述第三预设条件包括与所述第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第三临界值，所述第三临界值大于所述第一临界值。
  22. 根据权利要求17所述的方法，其特征在于，所述第二候选资源集合中的候选 资源的数量大于或等于所述第一阈值，并且所述第二候选资源集合中的第一候选资源的数量小于第二阈值，所述确定第三候选资源集合，包括：
    排除所述第一候选资源集合中满足第四预设条件的候选资源，确定所述第三候选资源集合；
    所述第四预设条件包括位于所述第二终端的非激活时间内，与所述第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于所述第一临界值，或者，所述第四预设条件包括位于所述第二终端的激活时间内，并且与所述第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第四临界值，以及位于所述第二终端的非激活时间内，并且与所述第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于所述第一临界值，所述第四临界值大于所述第一临界值。
  23. 根据权利要求17所述的方法，其特征在于，所述第二候选资源集合中的候选资源的数量大于或等于所述第一阈值，并且所述第二候选资源集合中的第一候选资源的数量小于第二阈值，所述确定第三候选资源集合，包括：
    确定所述第一候选资源集合中的至少一个第一候选资源为第三候选资源集合中的候选资源。
  24. 一种通信装置，其特征在于，所述通信装置包括：处理模块；
    所述处理模块，用于确定第一候选资源集合，所述第一候选资源集合为资源选择窗内的候选资源的集合，所述候选资源包括第一时间单元对应的至少一个频域单元，所述第一时间单元为所述资源选择窗内的多个时间单元中的一个，所述第一候选资源集合包括至少一个第一候选资源，所述第一候选资源为所述资源选择窗内位于第二终端的激活时间内的候选资源；
    所述处理模块，还用于排除所述第一候选资源集合中满足第一条件的候选资源，确定第二候选资源集合；
    所述处理模块，还用于若在所述第二候选资源集合中，所述第一候选资源的数量小于或等于第一阈值，则确定第三候选资源集合，所述第三候选资源集合包括所述第二候选资源集合所包含的候选资源和被排除的候选资源中的至少一个第一候选资源，所述第三候选资源集合包含的第一候选资源的数量大于或等于第一阈值。
  25. 根据权利要求24所述的通信装置，其特征在于，所述第一条件包括与第一侧行链路控制信息指示的资源有重叠，所述第一侧行链路控制信息是假设所述通信装置在资源感知窗内没有监听的时间单元上监听到的侧行链路控制信息。
  26. 根据权利要求25所述的通信装置，其特征在于，所述第一侧行链路控制信息指示的频域资源为资源池内全部频域单元，所述第一侧行链路控制信息指示的资源预留周期为配置在所述资源池上的资源预留周期中的一个。
  27. 根据权利要求25或26所述的通信装置，其特征在于，所述处理模块，具体用于排除所述第一候选资源集合中满足第二条件的候选资源，确定所述第三候选资源，所述第二条件包括位于所述第二终端的非激活时间内，并且与所述第一侧行链路控制信息指示的资源有重叠。
  28. 根据权利要求25或26所述的通信装置，其特征在于，所述处理模块，具体 用于选择所述被排除的候选资源中的至少一个第一候选资源，确定为所述第三候选资源集合中的候选资源。
  29. 根据权利要求28所述的通信装置，其特征在于，
    所述至少一个第一候选资源为在所述被排除的第一候选资源中随机确定的；或者，
    所述至少一个第一候选资源为所述被排除的第一候选资源中时域位置靠前的N个第一候选资源，N为正整数。
  30. 根据权利要求24所述的通信装置，其特征在于，所述第一条件包括与第二侧行链路控制信息指示的资源有重叠，并且对应的参考信号接收功率RSRP的测量值大于或等于第一临界值，所述第二侧行链路控制信息为所述通信装置在资源感知窗内接收到的侧行链路控制信息。
  31. 根据权利要求30所述的通信装置，其特征在于，所述处理模块，具体用于排除所述第一候选资源集合中满足第三条件的候选资源，确定所述第三候选资源集合，所述第三条件包括位于所述第二终端的激活时间内，与所述第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第二临界值，以及位于所述第二终端的非激活时间内，与所述第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于所述第一临界值，所述第二临界值大于所述第一临界值。
  32. 根据权利要求30所述的通信装置，其特征在于，所述处理模块，具体用于在所述被排除的第一候选资源中按照RSRP测量值从高到低的顺序选择M个第一候选资源，确定所述M个第一候选资源为所述第三候选资源集合中的候选资源，M为正整数。
  33. 根据权利要求24-32中任一项所述的通信装置，其特征在于，所述第一阈值为第一比例与第一时间窗内的候选资源的数量之积，所述第一比例大于或等于0并且小于1。
  34. 根据权利要求33所述的通信装置，其特征在于，
    所述第一时间窗为资源选择窗；或者，
    所述第一时间窗的时域起始位置为资源选择窗内、所述第二终端的激活时间的起始位置，所述第一时间窗的时域结束位置为所述资源选择窗的时域结束位置；或者，
    所述第一时间窗的时域起始位置为资源选择窗内、所述第二终端的激活时间的起始位置，所述第一时间窗的时域结束位置为所述资源选择窗内、所述第二终端的激活时间的时域结束位置。
  35. 根据权利要求24-34中任一项所述的通信装置，其特征在于，所述资源选择窗的时域起始位置为n+T 1，所述资源选择窗的时域结束位置为n+T 2，或者，所述资源选择窗的时域起始位置为n+T 3，所述资源选择窗的时域结束位置为n+T 2；
    其中，所述通信装置在时间单元n被触发进行资源选择，T 1和T 2是正整数，T 3为在n+T 1之后，所述第二终端的激活时间的时域起始位置。
  36. 根据权利要求24-35中任一项所述的通信装置，其特征在于，
    所述处理模块，还用于获取所述第二终端的激活时间。
  37. 根据权利要求36所述的通信装置，其特征在于，
    所述处理模块，具体用于获取第一指示信息，所述第一指示信息用于指示所述第 二终端的激活时间的时域位置；
    所述处理模块，还具体用于根据所述第一指示信息，确定所述第二终端的激活时间。
  38. 根据权利要求37所述的通信装置，其特征在于，
    所述第一指示信息包括至少一组所述第二终端的激活时间的时域起始位置和所述第二终端的激活时间的长度；或者，
    第一指示信息包括至少一组所述第二终端的激活时间的时域起始位置和时域结束位置；或者，
    所述第一指示信息包括m比特，所述m比特与m个时间单元对应，每个比特的值用于指示所述比特对应的时间单元是否位于所述第二终端的激活时间内。
  39. 根据权利要求38所述的通信装置，其特征在于，若所述第一指示信息包括m个比特，在第一时间单元内，所述第二终端的激活时间所在的符号与物理侧行链路控制信道PSCCH所在的符号不完全重叠，则所述第一时间单元位于所述第二终端的非激活时间内，所述第一时间单元为m个时间单元中的任意一个。
  40. 一种通信装置，其特征在于，所述通信装置包括：处理模块；
    所述处理模块，用于排除第一候选资源集合中满足第一预设条件的候选资源，确定第二候选资源集合，所述第一候选资源集合为资源选择窗内的候选资源的集合，所述候选资源包括第一时间单元对应的至少一个频域单元，所述第一时间单元为所述资源选择窗内的多个时间单元中的一个，所述第一候选资源集合包括至少一个第一候选资源，所述第一候选资源为所述资源选择窗内位于第二终端的激活时间内的候选资源，所述第一预设条件包括与第二侧行链路控制信息指示的资源有重叠，并且对应的参考信号接收功率RSRP的测量值大于或等于第一临界值，所述第二侧行链路控制信息为所述第一终端在资源感知窗内接收到的侧行链路控制信息；
    所述处理模块，还用于根据所述第二候选资源集合中的候选资源的数量，以及所述第二候选资源集合中第一候选资源的数量，确定第三候选资源集合，所述第三候选资源集合包括至少一个第一候选资源，所述第三候选资源集合中的候选资源的数量大于或等于第一阈值。
  41. 根据权利要求40所述的通信装置，所述第二候选资源集合中的候选资源的数量小于所述第一阈值，并且所述第二候选资源集合中的第一候选资源的数量小于第二阈值，其特征在于，所述处理模块，具体用于选择被排除的候选资源中的至少一个第一候选资源，确定为所述第三候选资源集合中的候选资源。
  42. 根据权利要求41所述的通信装置，其特征在于，
    所述至少一个第一候选资源为在所述被排除的第一候选资源中随机确定的；或者，将所述被排除的第一候选资源按照RSRP测量值从高到低的顺序选择的M个第一候选资源，确定为所述第三候选资源集合中的候选资源，M为正整数。
  43. 根据权利要求40所述的通信装置，其特征在于，所述第二候选资源集合中的候选资源的数量小于所述第一阈值，并且所述第二候选资源集合中的第一候选资源的数量小于第二阈值，所述处理模块，具体用于排除所述第一候选资源集合中满足第二预设条件的候选资源，确定所述第三候选资源集合，所述第二预设条件包括位于第二 终端的激活时间内，与所述第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第二临界值，以及位于所述第二终端的非激活时间内，与所述第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第一临界值，所述第二临界值大于所述第一临界值。
  44. 根据权利要求40所述的通信装置，其特征在于，所述第二候选资源集合中的候选资源的数量小于所述第一阈值，并且所述第二候选资源集合中的第一候选资源的数量大于或等于第二阈值，所述处理模块，具体用于排除所述第一候选资源集合中满足第三预设条件的候选资源，确定所述第三候选资源集合，所述第三预设条件包括与所述第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第三临界值，所述第三临界值大于所述第一临界值。
  45. 根据权利要求44所述的通信装置，其特征在于，所述第二候选资源集合中的候选资源的数量大于或等于所述第一阈值，并且所述第二候选资源集合中的第一候选资源的数量小于第二阈值，所述处理模块，具体用于排除所述第一候选资源集合中满足第四预设条件的候选资源，确定所述第三候选资源集合；
    所述第四预设条件包括位于所述第二终端的非激活时间内，与所述第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于所述第一临界值，或者，所述第四预设条件包括位于所述第二终端的激活时间内，并且与所述第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于第四临界值，以及位于所述第二终端的非激活时间内，并且与所述第二侧行链路控制信息指示的资源有重叠，并且对应的RSRP的测量值大于或等于所述第一临界值，所述第四临界值大于所述第一临界值。
  46. 根据权利要求40所述的通信装置，其特征在于，所述第二候选资源集合中的候选资源的数量大于或等于所述第一阈值，并且所述第二候选资源集合中的第一候选资源的数量小于第二阈值，所述处理模块，具体用于确定所述第一候选资源集合中的至少一个第一候选资源为第三候选资源集合中的候选资源。
  47. 一种通信装置，其特征在于，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得所述装置执行如权利要求1至16中任一项所述的方法，或者执行如权利要求17至23中任一项所述的方法。
  48. 一种计算机可读存储介质，其上存储有计算机程序或指令，其特征在于，所述计算机程序或指令被执行时使得计算机执行如权利要求1至16中任一项所述的方法或者如权利要求17至23中任一项所述的方法。
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EP1765031A1 (en) * 2005-09-15 2007-03-21 Siemens Mobile Communications S.p.A. Method, system, network and computer program product for positioning in a mobile communications network
CN109219015A (zh) * 2017-07-06 2019-01-15 电信科学技术研究院 一种资源选择方法及装置
CN109392134A (zh) * 2017-08-11 2019-02-26 电信科学技术研究院 一种资源选择方法及装置
CN113518323A (zh) * 2020-04-10 2021-10-19 大唐高鸿数据网络技术股份有限公司 一种资源选择方法及终端

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EP1765031A1 (en) * 2005-09-15 2007-03-21 Siemens Mobile Communications S.p.A. Method, system, network and computer program product for positioning in a mobile communications network
CN109219015A (zh) * 2017-07-06 2019-01-15 电信科学技术研究院 一种资源选择方法及装置
CN109392134A (zh) * 2017-08-11 2019-02-26 电信科学技术研究院 一种资源选择方法及装置
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