WO2023036071A1 - 资源选择方法及装置、用户设备 - Google Patents

资源选择方法及装置、用户设备 Download PDF

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Publication number
WO2023036071A1
WO2023036071A1 PCT/CN2022/116981 CN2022116981W WO2023036071A1 WO 2023036071 A1 WO2023036071 A1 WO 2023036071A1 CN 2022116981 W CN2022116981 W CN 2022116981W WO 2023036071 A1 WO2023036071 A1 WO 2023036071A1
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Prior art keywords
resource
resource set
candidate resources
threshold
candidate
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English (en)
French (fr)
Inventor
陈咪咪
沈兴亚
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources

Definitions

  • the present invention relates to the field of communication technologies, in particular to a resource selection method and device, and also to user equipment.
  • Vehicle to Everything is a new generation of information communication technology that connects vehicles to everything.
  • Sidelink is a new link introduced to support direct communication between V2X devices. type.
  • NR V2X supports two resource allocation schemes, mode 1 and mode 2: Mode 1: the base station schedules Sidelink resources to the user equipment (User Equipment, UE) for Sidelink transmission; Mode 2: UE determines the Sidelink resources configured by the base station/network.
  • NR V2X supports UE to independently select Sidelink resources for Sidelink transmission in mode 2.
  • the unlicensed frequency band supports the UE to occupy the channel for a period of time for subsequent transmission after the channel is successfully accessed.
  • COT Channel Occupancy Time
  • the UE needs to re-pass the Listen before Talk (listen before talk, LBT) mode to access the channel.
  • LBT Listen before talk
  • the channel access may fail due to LBT failure, and the COT will be terminated in advance.
  • the UE Under the mode 2 of the New Radio (NR) Sidelink, the UE is supported to acquire transmission resources autonomously.
  • NR Sidelink is supported on the unlicensed frequency band, in mode 2, the interval between multiple transmission resources may be greater than 16 ⁇ s, which may cause COT to terminate early and reduce transmission efficiency.
  • Embodiments of the present invention provide a resource selection method and device, as well as terminal equipment, so that the candidate resources determined by the user equipment can be continuous in time, ensure that the channel occupancy time (Channel Occupancy Time, COT) is not interrupted as much as possible, and improve transmission efficiency. reliability.
  • COT Channel Occupancy Time
  • an embodiment of the present invention provides a resource selection method, the method comprising:
  • the first resource set includes at least one candidate resource
  • the method further includes: if at least N consecutive M time slots do not exist in the first resource set, increasing the first threshold with the first step length; repeating resource exclusion according to the first threshold after increasing the first step length process.
  • determining the first resource set in the resource selection window includes: determining the second resource set in the resource selection window; performing a resource exclusion process on the second resource set to obtain the first resource set.
  • the resource exclusion process for the second resource set includes: judging the occupancy of candidate resources on the time slots in the resource selection window; all candidate resources occupied on the first time slot are excluded; if all candidate resources on the first time slot within the resource selection window are occupied, all candidate resources occupied on the first time slot are excluded Candidate resources other than the candidate resources whose corresponding RSRP is the lowest and does not exceed the first threshold.
  • determining that the resource exclusion process ends includes: if the number of candidate resources in the first resource set is greater than or equal to the second If there is a set percentage of the total number of candidate resources in the resource set, and there are at least N consecutive M time slots in the first resource set, it is determined that the resource exclusion process ends.
  • performing the resource exclusion process on the second resource set includes: excluding reserved resources whose corresponding RSRP is greater than the first threshold among reserved resources of other user equipments in the resource selection window.
  • the method may further include: determining the RSRP corresponding to the reserved resource according to the measured RSRP of the transmission channel on which other user equipments in the resource sensing window indicate the reserved resource information, and the transmission channel is: PSCCH or PSSCH.
  • determining the second resource set in the resource selection window includes: taking all possible candidate resources in the resource selection window as the second resource set.
  • determining the second resource set in the resource selection window includes: taking all possible candidate resources in the resource selection window as the third resource set; performing resource exclusion on the third resource set to obtain the first Four resource sets; if the number of candidate resources in the fourth resource set is less than the set percentage of the total number of candidate resources in the third resource set, or the fourth resource set does not have at least N consecutive M time slots, then the third All candidate resources on the time slots without candidate resources in the resource set are used as the second resource set.
  • performing resource exclusion on the third resource set includes: excluding reserved resources of other user equipments in the resource selection window whose corresponding RSRP is greater than a second threshold, and the second threshold is less than the first threshold.
  • performing resource exclusion on the third resource set may also include: excluding all candidate resources on unperceptible time slots within the resource selection window.
  • performing the resource exclusion process on the second resource set includes: for the time slots where the candidate resources in the second resource set are located, excluding the candidate resources whose corresponding RSRP on the time slot is greater than the first threshold.
  • determining that the resource exclusion process ends includes: if the candidate resources in the first resource set and the candidate resources in the fourth resource set The sum of the number of resources is greater than or equal to the set percentage of the total number of candidate resources in the third resource set, and there are at least N consecutive M time slots in the first resource set and the fourth resource set, then it is determined that the resource exclusion process ends.
  • the candidate resource is at least one continuous subchannel in the frequency domain; or the candidate resource is at least one interleaving resource in the frequency domain.
  • the method may further include: before repeating the resource exclusion process according to the first threshold after the first step is increased, if the first threshold after the first step is increased is greater than or equal to If the RSRP upper limit value is set, it is determined to stop the resource exclusion process.
  • the method may further include: if the number of times the first threshold is increased by the first step is greater than the set number of times threshold, determining to stop the resource exclusion process.
  • the first threshold is preset; or the first threshold is determined according to the priority of the service to be transmitted and/or the service transmitted on the candidate resource.
  • performing the resource exclusion process on the second resource set further includes: excluding all candidate resources on unperceptible time slots within the resource selection window.
  • an embodiment of the present invention provides a resource selection device, which includes:
  • the first resource exclusion module is configured to determine a first resource set within the resource selection window; the first resource set includes at least one candidate resource;
  • the judging module is used to judge the situation of candidate resources in the first resource set, and determine that the resource exclusion process is over when there are at least N consecutive M time slots in the first resource set; N and M are both positive integers.
  • the device may further include: a threshold management module, configured to increase the first threshold by a first step when the judging module determines that there are at least N consecutive M time slots in the first resource set;
  • the resource exclusion module is further configured to repeat the resource exclusion process according to the first threshold after increasing the first step length.
  • the device may further include: a first resource determination module, configured to determine a second resource set within the resource selection window; a first resource exclusion module performs a resource exclusion process on the second resource set to obtain the first resource set.
  • a first resource determination module configured to determine a second resource set within the resource selection window
  • a first resource exclusion module performs a resource exclusion process on the second resource set to obtain the first resource set.
  • the first resource exclusion module may exclude all occupied candidate resources on the first time slot when there are unoccupied candidate resources on the first time slot within the resource selection window ; In the case that all candidate resources on the first time slot in the resource selection window are occupied, exclude all candidate resources that are occupied on the first time slot and have the lowest corresponding RSRP and do not exceed the first threshold. Candidate resources.
  • the number of candidate resources in the first resource set of the judging module is greater than or equal to the set percentage of the total number of candidate resources in the second resource set, and there are at least N consecutive M time slots in the first resource set Next, confirm that the resource exclusion process is complete.
  • the first resource exclusion module is specifically configured to exclude the reserved resources whose corresponding RSRP is greater than the first threshold among the reserved resources of other user equipments in the resource selection window.
  • the apparatus may further include: a measurement module, configured to determine the RSRP corresponding to the reserved resource according to the measured RSRP of the transmission channel indicating reserved resource information by other user equipments within the resource awareness window, and the transmission channel is: PSCCH or PSSCH.
  • a measurement module configured to determine the RSRP corresponding to the reserved resource according to the measured RSRP of the transmission channel indicating reserved resource information by other user equipments within the resource awareness window, and the transmission channel is: PSCCH or PSSCH.
  • the first resource exclusion module is further configured to use all possible candidate resources in the resource selection window as the second resource set.
  • the device may further include: a second resource determination module, configured to use all possible candidate resources in the resource selection window as a third resource set; a second resource exclusion module, configured to The third resource set performs resource exclusion to obtain the fourth resource set; correspondingly, the judging module is also used to judge the situation of candidate resources in the fourth resource set, and the number of candidate resources in the fourth resource set is greater than or equal to the first The set percentage of the total number of candidate resources of the three resource sets, and when there are at least N consecutive M time slots in the fourth resource set, it is determined that the resource exclusion process ends; When the number of candidate resources in is less than the set percentage of the total number of candidate resources in the third resource set, or there are at least N consecutive M time slots in the fourth resource set, the third resource set without candidate resources All candidate resources on the time slot are used as the second resource set.
  • a second resource determination module configured to use all possible candidate resources in the resource selection window as a third resource set
  • a second resource exclusion module configured to The third resource set performs resource ex
  • the second resource exclusion module is specifically configured to exclude reserved resources of other user equipments in the resource selection window whose corresponding RSRP is greater than a second threshold, and the second threshold is less than the first threshold.
  • the second resource exclusion module is further configured to exclude all candidate resources on unperceptible time slots within the resource selection window.
  • the first resource exclusion module is specifically configured to, for the time slot where the candidate resources in the second resource set are located, exclude candidate resources whose corresponding RSRP on the time slot is greater than the first threshold.
  • the sum of the number of candidate resources in the first resource set and the number of candidate resources in the fourth resource set by the judging module is greater than or equal to the set percentage of the total number of candidate resources in the third resource set, and the first resource set and the fourth resource set When there are at least N consecutive M time slots in the resource set, it is determined that the resource exclusion process ends.
  • the candidate resource is at least one continuous subchannel in the frequency domain; or the candidate resource is at least one interleaving resource in the frequency domain.
  • the threshold management module is further configured to determine to stop the resource exclusion process when the first threshold after adding the first step length is greater than or equal to the set RSRP upper limit.
  • the device may further include: a statistics module, configured to count the number of times the first threshold is increased by the first step, and determine if the number of times is greater than the set number of times threshold Stop the resource exclusion process.
  • a statistics module configured to count the number of times the first threshold is increased by the first step, and determine if the number of times is greater than the set number of times threshold Stop the resource exclusion process.
  • the first threshold is preset; or the first threshold is determined according to the priority of the service to be transmitted and/or the service transmitted on the candidate resource.
  • the first resource exclusion module is further configured to exclude all candidate resources on unperceptible time slots within the resource selection window.
  • an embodiment of the present invention further provides a user equipment, including the above resource selection apparatus.
  • an embodiment of the present invention also provides a computer-readable storage medium, the computer-readable storage medium is a non-volatile storage medium or a non-transitory storage medium, and a computer program is stored thereon, and the computer program When executed by the processor, the steps of the above method are executed.
  • an embodiment of the present invention also provides an electronic device, including a memory and a processor, the memory stores a computer program that can run on the processor, and the processor executes the computer program when running the computer program. steps of the method described above.
  • the resource selection method and device provided by the embodiments of the present invention not only consider the frequency-domain occupancy of each candidate resource but also the time-domain condition of each candidate resource when selecting resources on an unlicensed frequency band.
  • N In the case of M consecutive time slots, stop the resource exclusion process, so that in the resource exclusion process, it is possible to select resources that are continuous in the time domain as much as possible, so that the candidate resources determined by the user equipment can be continuous in time, and the COT can be guaranteed as much as possible. No interruption, improve the reliability of transmission.
  • resource exclusion can be performed according to the occupancy of candidate resources on each time slot in the resource selection window. For a time slot where all candidate resources are occupied, all candidate resources occupied on this time slot are excluded.
  • RSRP Reference Signal Receiving Power
  • the existing resource exclusion mechanism can be used as much as possible, but when judging whether to end the resource exclusion process, not only must there be at least N consecutive M time slots in the resource set, but also The number of candidate resources must be greater than or equal to the set percentage of the total number of possible candidate resources in the resource selection window, that is, the number of final candidate resources and the continuity in time must be considered at the same time to ensure transmission more effectively reliability.
  • resource exclusion when performing resource exclusion, it is also possible to exclude the reserved resources corresponding to RSRP greater than the second threshold among the reserved resources of other user equipments in the resource selection window, and in the resource set obtained after the resource exclusion process If the number of candidate resources or the continuity in time does not meet the requirements, resource exclusion is repeated only for all candidate resources on the time slots without candidate resources until the number of remaining candidate resources and the time continuity When the continuity meets the requirements, the resource exclusion process is stopped to ensure the quality of candidate resources.
  • the third step by limiting the upper limit of the first threshold, or limiting the number of times the first threshold is increased by the first step, not only can the finally obtained candidate resources meet the requirements as far as possible in terms of quantity and time continuity, but also effectively It avoids the influence of the selected candidate resource on the transmission reliability due to the poor quality of the corresponding transmission channel. That is to say, the influence of channel quality and channel occupation time on information transmission quality can be balanced, and unnecessary repeated processes can be reduced, and resource selection efficiency can be improved.
  • Figure 1 is a schematic diagram of NR V2X resource exclusion in the prior art
  • Fig. 2 is a kind of flow chart of the resource selection method of the embodiment of the present invention.
  • FIG. 3 is a schematic diagram of candidate resources composed of multiple continuous subchannels in the frequency domain in an embodiment of the present invention
  • FIG. 4 is a schematic diagram of candidate resources composed of multiple interleaved resources in the frequency domain in an embodiment of the present invention
  • FIG. 5 is a flow chart of a specific implementation of a resource selection method in an embodiment of the present invention.
  • Fig. 6 is another specific implementation flowchart of the resource selection method in the embodiment of the present invention.
  • Fig. 7 is another specific implementation flowchart of the resource selection method in the embodiment of the present invention.
  • FIG. 8 is a structural block diagram of a resource selection device according to an embodiment of the present invention.
  • Fig. 9 is another structural block diagram of a resource selection device according to an embodiment of the present invention.
  • NR Sidelink is a new link type introduced to support direct communication between V2X devices.
  • NR Sidelink is mainly composed of Physical Sidelink Control Channel (PSCCH), Physical Sidelink Shared Channel (Physical Sidelink Shared Channel, PSSCH), physical sidelink broadcast channel (physical sidelink broadcast channel, PSBCH), physical sidelink feedback channel (Physical Sidelink Feedback Channel, PSFCH).
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel
  • PSBCH physical sidelink broadcast channel
  • PSFCH Physical Sidelink Feedback Channel
  • the Tx (sending end) UE needs to independently select Sidelink resources. Specifically, the Tx UE has been performing perception.
  • the resource selection window is determined according to the sensing results in the resource perception window. Candidate resources are excluded, unavailable candidate resources are excluded, and finally a candidate resource set is formed and reported to the media access control (Medio Access Control, MAC) layer.
  • the MAC layer selects transmission resources from the candidate resource set according to resource selection constraints.
  • Candidate resources if the transmission resources need to occupy L consecutive sub-channels (sub-channels), then any consecutive L sub-channels within a time slot within the resource selection window are a candidate resource. If the transmission resource needs to occupy L consecutive interleaving resources, then any consecutive L interleaving resources in one time slot within the resource selection window is a candidate resource.
  • Unavailable candidate resources If the Tx UE cannot monitor because of a certain time slot x in the resource awareness window, it is calculated from the time slot x according to the possible reservation period of the resource to a certain time slot y in the resource selection window, Then the Tx UE cannot obtain the resource occupancy status of other UEs in the time slot y. In order to avoid any collision, for the Tx UE, all candidate resources in the time slot y are unavailable candidate resources.
  • the RSRP threshold is determined according to the L1 priority of the Tx UE and the measured UE.
  • UE4 has a data packet arriving at time n, (n-T0, nT proc,0 ) is the resource awareness window, and (n+T1, n+T2) is the resource selection window.
  • UE4 performs resource exclusion after time n to finally determine the candidate resource set. Specifically, firstly, all candidate resources in the resource selection window are formed into an original candidate resource set.
  • UE4 calculates the time slots that cannot perform resource sensing in the resource sensing window according to all possible resource reservation periods, and excludes all candidate resources falling in the time slots of the resource selection window.
  • UE4 decodes the SCI of other UEs (UE1, UE2, and UE3 in the figure), obtains resource reservation information of other UEs, and performs RSRP measurement. If the measured RSRP is higher than the threshold, other UEs are excluded from the resource selection window.
  • the UE On the unlicensed frequency band, the UE needs to obtain a channel access opportunity through LBT.
  • LBT means that before starting the transmission, it will first listen to the channel occupancy of other devices to detect whether the channel is idle. If the channel is busy, it will wait for the channel to be idle before transmitting to avoid channel access conflicts.
  • 5G NR 5G NR in Unlicensed Spectrum
  • the base station or UE determines the COT, if the time interval between two transmissions in the COT is less than 16 ⁇ s, no LBT is required before transmission; if it is greater than 16 ⁇ s, the transmission LBT is required before; if LBT fails, the COT will be terminated. Therefore, in the Sidelink in Unlicensed Spectrum (SL-U) system, in order to ensure that the COT does not terminate early, the transmission in the COT needs to be as continuous as possible in the time domain.
  • SL-U Sidelink in Unlicensed Spectrum
  • the embodiment of the present invention provides a resource selection method and device.
  • selecting comprehensively consider the frequency domain occupancy and time domain conditions of each candidate resource, and stop the resource exclusion process if there are at least N consecutive M time slots, otherwise increase the first threshold and repeat the resource exclusion process, so as to achieve as much as possible Select resources that are continuous in time.
  • the resource selection method and device provided by the embodiments of the present invention can not only be applied to the situation where the user equipment independently selects transmission resources in the NR Sidelink communication scenario, but also can be applied to other communication scenarios that require the user equipment to independently select transmission resources .
  • Step 201 the user equipment determines a second resource set within a resource selection window.
  • the second resource set may be an initial candidate resource set, which includes all possible candidate resource sets within the resource selection window.
  • the second resource set may be a resource set after a resource exclusion process is performed on the above initial candidate resource set.
  • the candidate resources may specifically be a plurality of continuous subchannels in the frequency domain, or one or more interleaving resources in the frequency domain, which is not limited in this embodiment of the present invention. .
  • any consecutive L sub-channels in a time slot in the resource selection window constitute a candidate resource, where L is the transmission resource The length of the required resource.
  • L is the transmission resource The length of the required resource.
  • UE triggers resource selection or resource reselection at time n, (n-T0, nT proc,0 ) is the resource awareness window, and (n+T1, n+T2) is the resource selection window.
  • the resource selection window there are 6 transmission resources determined from the final candidate resource set, which are resources on 3 time slots in COT1 and COT2 respectively.
  • any consecutive N interleaving resources in a time slot in the resource selection window constitute a candidate resource.
  • frequency domain resources with row numbers 0, 5, 10, and 15 form interleaving resource 0
  • frequency domain resources with row numbers 1, 6, 11, and 16 form interleaving resource 1, and row number is 2.
  • the frequency domain resources of 7, 12, and 17 form the interleaving resource 2
  • the frequency domain resources of the line numbers 3, 8, 13, and 18 form the interleaving resource 3
  • the frequency domain resources of the line numbers 4, 9, 14, and 19 Interleaving resource 4 is formed
  • the transmission of PSSCH1 occupies two consecutive interleaving resources with indexes 0 and 1
  • the transmission of PSSCH2 occupies the interleaving resource with index 2.
  • Step 202 performing a resource exclusion process on the second resource set to obtain the first resource set.
  • the first resource set includes at least one candidate resource.
  • the candidate resources in the second resource set there may be many different ways of excluding the candidate resources in the second resource set, which will be described in detail later. Moreover, in specific applications, it can be selected according to needs.
  • the first threshold is an indicator for measuring the RSRP, which may be preset or determined according to the priority of the service to be transmitted and/or the service transmitted on the candidate resource. For example, high-level parameters configure the RSRP threshold table. Indexes from 0 to n correspond to n+1 different thresholds.
  • the service priority of other terminals to be transmitted on the candidate resource is the first priority P1, and the service priority of the terminal to be transmitted is resource-aware.
  • the priority of the business is the second priority P2. Determine the index value of the first threshold according to the priority of the service transmitted on the candidate resource as follows:
  • i is an index value in the RSRP threshold table, and the first threshold can be determined by looking up the table according to this index value.
  • Step 203 judge whether there are at least N consecutive M time slots in the first resource set; if yes, execute step 204; otherwise, execute step 205.
  • step 204 it is determined that the resource exclusion process ends.
  • Step 205 increase the first threshold with the first step. Then, return to step 202, and repeat the resource exclusion process according to the first threshold after increasing the first step length.
  • the length of the first step can be preconfigured or agreed, for example, it can be 2dBm, 3dBm, etc.
  • the resource selection method provided by the embodiment of the present invention not only considers the frequency domain occupancy of each candidate resource, but also considers the time domain of each candidate resource when selecting resources on an unlicensed frequency band.
  • N At least N consecutive In the case of M time slots, stop the resource exclusion process, so that during the resource exclusion process, try to select resources that are continuous in the time domain, so that the candidate resources determined by the user equipment can be continuous in time, and ensure that the COT is not interrupted as much as possible , improve transmission reliability.
  • FIG. 5 it is a flow chart of a specific implementation of the resource selection method in the embodiment of the present invention.
  • the resource selection method of this embodiment includes the following steps:
  • step 501 the user equipment determines the second resource set within the resource selection window, that is, puts all possible candidate resource sets within the resource selection window into the second resource set.
  • the resource exclusion process is performed on the second resource pool.
  • the resource occupancy of candidate resources on each time slot in the window is excluded to obtain the first resource set.
  • step 502 all candidate resources on unperceptible time slots within the resource selection window may be further excluded. Specifically, it may be performed before the foregoing exclusion operation is performed, or may be performed after the foregoing exclusion operation is performed, which is not limited thereto.
  • step 503 it is judged whether there are at least N consecutive M time slots in the first resource set; if yes, execute step 504; otherwise, execute step 505.
  • step 504 it is determined that the resource exclusion process ends.
  • Step 505 increase the first threshold by a first step. Then, return to step 502, and repeat the resource exclusion process according to the first threshold after increasing the first step length.
  • At least one candidate resource in the finally obtained resource set can be continuous for M time slots in time.
  • the upper limit of the first threshold, or the number of times the first threshold is increased by the first step may also be limited.
  • step 505 it is judged whether the first threshold after increasing the first step length is greater than or equal to the set RSRP upper limit value (such as 20dBm), if yes, then determine to stop the resource exclusion process, that is, execute Step 504; otherwise, go to step 502.
  • the set RSRP upper limit value such as 20dBm
  • step 503 it is judged whether the number of times the first threshold is increased by the first step is greater than the set number of times threshold (such as 3 times), if yes, then determine to stop the resource exclusion process, that is, execute Step 504; otherwise, go to step 505.
  • the set number of times threshold such as 3 times
  • the finally obtained candidate resources can meet the requirements as much as possible in terms of quantity and time continuity, and avoid the impact of the selected candidate resources on the transmission reliability due to the poor quality of the corresponding transmission channel. coming impact.
  • FIG. 6 shows another specific implementation flowchart of the resource selection method in the embodiment of the present invention.
  • the resource selection method of this embodiment includes the following steps:
  • Step 601 the user equipment determines the second resource set within the resource selection window, that is, puts all possible candidate resource sets within the resource selection window into the second resource set.
  • step 602 is executed, which is different from the method of resource exclusion for the second resource pool in the embodiment shown in FIG. Among the resources, the reserved resources corresponding to the RSRP greater than the first threshold are obtained to obtain the first resource set.
  • the RSRP corresponding to the reserved resources is determined according to the RSRP measured by the user equipment on the transmission channel indicating the reserved resource information by other user equipments within the resource awareness window, and the transmission channel may be PSCCH or PSSCH.
  • the RSRP corresponding to the candidate resource also refers to the RSRP of the transmission channel indicating the candidate resource information within the resource awareness window measured by the user equipment.
  • step 602 all candidate resources on unperceptible time slots within the resource selection window may be further excluded. Specifically, it may be performed before the foregoing exclusion operation is performed, or may be performed after the foregoing exclusion operation is performed, which is not limited thereto.
  • Step 603 judging whether the number of candidate resources in the first resource set is greater than or equal to a set percentage of the total number of candidate resources in the second resource set, and whether there are at least N consecutive M time slots in the first resource set ; If yes, go to step 604; otherwise, go to step 605.
  • step 604 it is determined that the resource exclusion process ends.
  • Step 605 increase the first threshold by the first step. Then, return to step 602, and repeat the resource exclusion process according to the first threshold after increasing the first step length.
  • the upper limit of the first threshold, or the number of times the first threshold is increased by the first step may also be limited.
  • FIG. 7 shows another specific implementation flowchart of the resource selection method in the embodiment of the present invention.
  • the resource selection method of this embodiment includes the following steps:
  • step 701 the user equipment takes all possible candidate resources within the resource selection window as a third resource set.
  • step 702 a resource exclusion process is performed on the third resource set, and the reserved resources corresponding to RSRP greater than the second threshold among the reserved resources of other user equipments in the resource selection window are excluded to obtain the fourth resource set.
  • all candidate resources on unperceivable time slots within the resource selection window may also be excluded.
  • step 702 all candidate resources on unperceptible time slots within the resource selection window may be further excluded. Specifically, it may be performed before the foregoing exclusion operation is performed, or may be performed after the foregoing exclusion operation is performed, which is not limited thereto.
  • step 703 it is judged whether the number of candidate resources in the fourth resource set is greater than or equal to the set percentage of the total number of candidate resources M total of the third resource set, and whether there are at least N consecutive M total resources in the fourth resource set time slot; if yes, go to step 708; otherwise, go to step 704.
  • Step 704 Use all candidate resources on the time slots without candidate resources in the third resource set as the second resource set, and increase the second threshold to obtain the first threshold.
  • Step 705 for the time slot where the candidate resources in the second resource set are located, exclude the candidate resources whose corresponding RSRP on the time slot is greater than the first threshold, to obtain the first resource set.
  • the first threshold may be a value obtained by increasing the second threshold by the first step, that is, the second threshold may be regarded as an initial value of the first threshold.
  • Step 706 judging whether the sum of the number of candidate resources in the first resource set and the number of candidate resources in the fourth resource set is greater than or equal to the set percentage of the total number of candidate resources in the third resource set, and the first resource set and the Whether there are at least N consecutive M time slots in the fourth resource set; if yes, go to step 708; otherwise, go to step 707.
  • Step 707 increase the first threshold by the first step. Then step 705 is executed, and the resource exclusion process is repeated for the second resource set according to the first threshold after the first step length is increased.
  • step 708 it is determined that the resource exclusion process ends.
  • the solution of the embodiment shown in FIG. 7 first excludes the reserved resources whose corresponding RSRP is greater than the second threshold among the reserved resources of other user equipments in the resource selection window, and the number of candidate resources or the continuity in time do not meet the requirements In the case of , repeat resource exclusion only for all candidate resources on the time slots without candidate resources, until the number of remaining candidate resources and the continuity in time all meet the requirements, stop the resource exclusion process, The quality of candidate resources is guaranteed.
  • the upper limit of the first threshold, or the number of times the first threshold is increased by the first step may also be limited.
  • an embodiment of the present invention also provides a resource selection device, as shown in FIG. 8 , which is a structural block diagram of the device.
  • the resource selection device 800 includes: a first resource determination module 80 , a first resource exclusion module 81 , a judgment module 82 , and a threshold management module 83 . in:
  • the first resource determining module 80 is configured to determine a second resource set within the resource selection window
  • the first resource exclusion module 81 is configured to perform a resource exclusion process on the second resource set to obtain the first resource set;
  • the judging module 82 is used to judge the situation of candidate resources in the first resource set, and determine that the resource exclusion process ends when there are at least N consecutive M time slots in the first resource set;
  • the threshold management module 83 is configured to increase the first threshold by a first step when the judging module 82 determines that there are no at least N consecutive M time slots in the first resource set.
  • the first resource exclusion module 81 is further configured to repeat the resource exclusion process according to the first threshold after adding the first step length. That is, after increasing the threshold for the first time, the resource exclusion process is repeated.
  • the second resource set may be an initial candidate resource set, which includes all possible candidate resource sets within the resource selection window.
  • the second resource set may be a resource set after a resource exclusion process is performed on the above initial candidate resource set.
  • the first resource exclusion module 81 may exclude candidate resources in the second resource set in various ways.
  • the first resource exclusion module 81 can perform resource exclusion according to the candidate resources on each time slot in the resource selection window, specifically, there are unoccupied candidate resources in a certain time slot In the case of resources, exclude all candidate resources occupied on the time slot; in the case of all candidate resources occupied on the time slot, exclude all candidate resources occupied on the time slot corresponding to the lowest RSRP and no Candidate resources other than candidate resources exceeding the first threshold.
  • the first resource exclusion module 81 may exclude reserved resources whose corresponding RSRP is greater than the first threshold among the reserved resources of other user equipments in the resource selection window.
  • the judging module 82 not only needs to judge the continuity of the candidate resources in the first resource set in the time domain, but also judges whether the number of candidate resources in the second resource set meets the requirements.
  • the number of candidate resources in the first resource set by the judging module 82 is greater than or equal to the set percentage of the total number of candidate resources in the second resource set, and there are at least N consecutive M time slots in the first resource set , it is determined that the resource exclusion process ends; otherwise, the threshold management module 83 is triggered to increase the first threshold by the first step.
  • the RSRP corresponding to the reserved resource may be determined by a corresponding measurement module (not shown). Specifically, the measurement module may indicate the transmission of the reserved resource information according to the other user equipment in the measured resource awareness window.
  • the RSRP of the channel determines the RSRP corresponding to the reserved resource, and the transmission channel is: PSCCH or PSSCH.
  • the first resource exclusion module 81 may also exclude all candidate resources on unperceptible time slots within the resource selection window.
  • FIG. 9 it is another structural block diagram of the resource selection device according to the embodiment of the present invention.
  • the resource selection apparatus 900 further includes: a second resource determination module 90 and a second resource exclusion module 91 .
  • the second resource determination module 90 is used to use all possible candidate resources in the resource selection window as the third resource set; the second resource exclusion module 91 is used to perform resource exclusion on the third resource set to obtain the fourth Resource collection; specifically, excluding reserved resources of other user equipments in the resource selection window whose corresponding RSRP is greater than the second threshold.
  • the judging module 82 is used to judge the situation of the candidate resources in the fourth resource set, and the number of candidate resources in the fourth resource set is greater than or equal to the set percentage of the total number of candidate resources in the third resource set, and the fourth resource set exists In the case of at least N consecutive M time slots, it is determined that the resource exclusion process ends.
  • the fourth resource set by the first resource determination module 80 When the number of candidate resources in the fourth resource set by the first resource determination module 80 is less than the set percentage of the total number of candidate resources in the third resource set, or the fourth resource set does not have at least N consecutive M time slots , using all candidate resources on the time slots without candidate resources in the third resource set as the second resource set.
  • the second resource exclusion module 91 may also exclude all candidate resources on unperceptible time slots within the resource selection window.
  • the first resource exclusion module 81 is configured to exclude, for each time slot where the candidate resources in the second resource set are located, the corresponding RSRP on the time slot is greater than the first A threshold of candidate resources.
  • the judging module 82 is also used for the sum of the candidate resources in the first resource set and the candidate resources in the fourth resource set to be greater than or equal to the set percentage of the total number of candidate resources in the third resource set, and the first resource set And in a case where there are at least N consecutive M time slots in the fourth resource set, it is determined that the resource exclusion process ends.
  • the threshold management module 83 is also used to determine in the judgment module 82 that the sum of the number of candidate resources in the first resource set and the number of candidate resources in the fourth resource set is less than the set percentage of the total number of candidate resources in the third resource set, or the first If there are no at least N consecutive M time slots in the resource set and the fourth resource set, increase the first threshold with the first step.
  • the first resource exclusion module 80 is further configured to repeat the resource exclusion process according to the first threshold after adding the first step length. That is to say, after increasing the threshold for the first time, repeat for each time slot where the candidate resource in the second resource set is located, and exclude the candidate resource whose corresponding RSRP on the time slot is greater than the first threshold.
  • the threshold management module 83 can also increase the first threshold after the first step is greater than or equal to the set RSRP In the case of the upper limit value, it is determined to stop the resource exclusion process.
  • the resource selection device may further include: a statistics module, used for counting and increasing the first step A threshold number of times, and when the number of times is greater than the set number of times threshold, it is determined to stop the resource exclusion process.
  • a statistics module used for counting and increasing the first step A threshold number of times, and when the number of times is greater than the set number of times threshold, it is determined to stop the resource exclusion process.
  • the influence of channel quality and channel occupancy time on the quality of information transmission can be balanced, and unnecessary repeated processes can be reduced to improve resource selection efficiency.
  • the resource selection method and device provided by the embodiments of the present invention can be applied to SL-Us that support blind retransmission and/or support blind retransmission and Hybrid Automatic Repeat reQuest (Hybrid Automatic Repeat reQuest, HARQ) feedback hybrid retransmission mode , it can also be applied to distributed resource allocation of all SL-Us, which is not limited in this embodiment of the present invention.
  • Hybrid Automatic Repeat reQuest Hybrid Automatic Repeat reQuest, HARQ
  • an embodiment of the present invention further provides a user equipment, including the resource selection apparatus in each of the foregoing embodiments.
  • the user equipment can independently select NR Sidelink resources, and the determined candidate resources can be continuous in time, so as to ensure that the COT is not interrupted as much as possible, so that the transmission of Sidelink has higher reliability.
  • the above resource selection device may correspond to a chip in a network device, such as a SoC (System-On-a-Chip, system on a chip), a baseband chip, a chip module, and the like.
  • SoC System-On-a-Chip, system on a chip
  • baseband chip a baseband chip
  • chip module a chip module
  • each module/unit contained in the product may be a software module/unit, or a hardware module/unit, or may be partly a software module/unit, partly is a hardware module/unit.
  • each module/unit contained therein may be realized by hardware such as a circuit, or at least some modules/units may be realized by a software program, and the software program Running on the integrated processor inside the chip, the remaining (if any) modules/units can be realized by means of hardware such as circuits; They are all realized by means of hardware such as circuits, and different modules/units can be located in the same component (such as chips, circuit modules, etc.) or different components of the chip module, or at least some modules/units can be realized by means of software programs,
  • the software program runs on the processor integrated in the chip module, and the remaining (if any) modules/units can be realized by hardware such as circuits; /Units can be realized by means of hardware such as circuits, and different modules/units can be located in the same component (such as chips, circuit modules, etc.) or different components in the terminal, or at least some modules/units can be implemented in the form of software programs Realization, the software program runs on
  • An embodiment of the present invention also provides a computer-readable storage medium, the computer-readable storage medium is a non-volatile storage medium or a non-transitory storage medium, and a computer program is stored thereon, and the computer program is executed by a processor During operation, the steps of the method provided in the embodiment corresponding to the foregoing FIG. 2 or FIG. 5 or FIG. 6 or FIG. 7 are executed.
  • the embodiment of the present invention also provides another resource selection device, which includes a memory and a processor, the memory stores a computer program that can run on the processor, and the processor performs the above-mentioned resource selection when running the computer program.
  • FIG. 2 or FIG. 5 or FIG. 6 or FIG. 7 corresponds to the steps of the method provided by the embodiment.
  • An embodiment of the present invention also provides an electronic device, including a memory and a processor, the memory stores a computer program that can run on the processor, and the processor executes the above-mentioned Figure 2 when running the computer program.
  • FIG. 5 or FIG. 6 or FIG. 7 corresponds to the steps of the method provided by the embodiment.
  • the disclosed methods, devices and systems can be implemented in other ways.
  • the device embodiments described above are only illustrative; for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation; for example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, 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 units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. 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 invention may be integrated into one processing unit, each unit may be physically included separately, 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 hardware plus software functional units.

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Abstract

一种资源选择方法及装置、终端设备，该方法包括：确定资源选择窗内的第一资源集合；所述第一资源集合至少包括一个候选资源；若所述第一资源集合中存在至少N个连续M个时隙，则确定资源排除过程结束；所述N和M均为正整数。利用本发明，可以使UE确定的候选资源能够在时间上连续，尽可能保证信道占用时间不中断，提高传输的可靠性。

Description

资源选择方法及装置、用户设备
本申请要求2021年9月9日提交中国专利局、申请号为202111056945.1、发明名称为“资源选择方法及装置、用户设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，具体地涉及一种资源选择方法及装置，还涉及一种用户设备。
背景技术
车用无线通信技术(Vehicle to Everything，V2X)是将车辆与一切事物相连接的新一代信息通信技术，侧边链路(Sidelink，SL)是为了支持V2X设备间直接通信而引入的新链路类型。NR V2X支持mode 1和mode 2两种资源分配方案：Mode 1:基站调度Sidelink资源给用户设备(User Equipment，UE)进行Sidelink传输；Mode 2:UE确定由基站/网络配置的Sidelink资源。NR V2X在mode 2下支持UE自主选择Sidelink资源用于Sidelink传输。
非授权频段支持UE在信道接入成功后占用信道一段时间以做后续传输，当信道占用时间(Channel Occupancy Time，COT)内的两次传输时间间隔大于16μs时，UE需要重新通过先听后说(listen before talk，LBT)方式接入信道，此时可能会由于LBT失败导致信道接入失败，COT提前终止。在新空口(New Radio，NR)Sidelink的mode 2下，支持UE自主感知获取传输资源。当非授权频段上支持NR Sidelink时，在mode 2下，可能会出现多个传输资源之间的间隔大于16μs，进而可能会导致COT提前终止，降低传输效率。
发明内容
本发明实施例提供一种资源选择方法及装置、以及终端设备，以使用户设备确定的候选资源能够在时间上连续，尽可能保证信道占用 时间(Channel Occupancy Time,COT)不中断，提高传输的可靠性。
为此，本发明实施例提供如下技术方案：
一方面，本发明实施例提供一种资源选择方法，该方法包括：
确定资源选择窗内的第一资源集合；第一资源集合至少包括一个候选资源；
若第一资源集合中存在至少N个连续M个时隙，则确定资源排除过程结束；N和M均为正整数。
进一步地，该方法还包括：若第一资源集合中不存在至少N个连续M个时隙，则以第一步长增加第一阈值；根据增加第一步长后的第一阈值重复资源排除过程。
进一步地，确定资源选择窗内的第一资源集合包括：确定资源选择窗内的第二资源集合；对第二资源集合进行资源排除过程，得到第一资源集合。
在一种非限制性实施方式中，对第二资源集合进行资源排除过程包括：判断资源选择窗内时隙上的候选资源占用情况；若资源选择窗内的第一时隙上有未被占用的候选资源，则排除第一时隙上所有被占用的候选资源；若资源选择窗内的第一时隙上所有候选资源都被占用，则排除第一时隙上被占用的所有候选资源中对应的RSRP最低且不超过第一阈值的候选资源以外的候选资源。
相应地，在该实施例方式中，若第一资源集合中存在至少N个连续M个时隙，则确定资源排除过程结束包括：若第一资源集合中的候选资源的个数大于等于第二资源集合中的候选资源总数的设定百分比，并且第一资源集合中存在至少N个连续M个时隙，则确定资源排除过程结束。
在另一种非限制性实施方式中，对第二资源集合进行资源排除过程包括：排除资源选择窗内其他用户设备的预留资源中对应的RSRP 大于第一阈值的预留资源。
进一步地，该方法还可包括：根据测量的资源感知窗内其它用户设备指示预留资源信息的传输信道的RSRP确定预留资源对应的RSRP，传输信道为：PSCCH或PSSCH。
进一步地，确定资源选择窗内的第二资源集合包括：将资源选择窗内所有可能的候选资源作为第二资源集合。
在另一种非限制性实施方式中，确定资源选择窗内的第二资源集合包括：将资源选择窗内所有可能的候选资源作为第三资源集合；对第三资源集合进行资源排除，得到第四资源集合；若第四资源集合中的候选资源的个数小于第三资源集合的候选资源总数的设定百分比，或者第四资源集合不存在至少N个连续M个时隙，则将第三资源集合中没有候选资源的时隙上的所有候选资源作为第二资源集合。
进一步地，对第三资源集合进行资源排除包括：排除资源选择窗内其他用户设备的预留资源中对应的RSRP大于第二阈值的预留资源，第二阈值小于第一阈值。
进一步地，对第三资源集合进行资源排除还可包括：排除资源选择窗内无法感知的时隙上的所有候选资源。
进一步地，对第二资源集合进行资源排除过程包括：对第二资源集合中候选资源所在的时隙，排除时隙上对应的RSRP大于第一阈值的候选资源。
相应地，在该实施方式中，若第一资源集合中存在至少N个连续M个时隙，则确定资源排除过程结束包括：若第一资源集合中的候选资源及第四资源集合中的候选资源的个数之和大于等于第三资源集合的候选资源总数的设定百分比，并且第一资源集合和第四资源集合中存在至少N个连续M个时隙，则确定资源排除过程结束。
可选地，候选资源为频域上的至少一个连续的子信道；或者候选资源为频域上的至少一个交织资源。
在上述各方式的实施例的具体应用中，该方法还可进一步包括：在根据增加第一步长后的第一阈值重复资源排除过程之前，若增加第一步长后的第一阈值大于等于设定的RSRP上限值，则确定停止资源排除过程。
在上述各方式的实施例的具体应用中，该方法还可进一步包括：如果以第一步长增加第一阈值的次数大于设定的次数阈值，则确定停止资源排除过程。
可选地，第一阈值为预先设定；或者第一阈值为根据待传输业务和/或候选资源上传输的业务的优先级确定。
可选地，对第二资源集合进行资源排除过程还包括：排除资源选择窗内无法感知的时隙上的所有候选资源。
另一方面，本发明实施例提供一种资源选择装置，该装置包括：
第一资源排除模块，用于确定资源选择窗内的第一资源集合；第一资源集合至少包括一个候选资源；
判断模块，用于判断第一资源集合中的候选资源情况，并在第一资源集合中存在至少N个连续M个时隙的情况下，确定资源排除过程结束；N和M均为正整数。
进一步地，该装置还可包括：阈值管理模块，用于在判断模块确定第一资源集合中不存在至少N个连续M个时隙的情况下，以第一步长增加第一阈值；第一资源排除模块，还用于根据增加第一步长后的第一阈值重复资源排除过程。
进一步地，该装置还可包括：第一资源确定模块，用于确定资源选择窗内的第二资源集合；第一资源排除模块对第二资源集合进行资源排除过程，得到第一资源集合。
一种非限制性的实施方式中，第一资源排除模块可以在资源选择窗内的第一时隙上有未被占用的候选资源的情况下，排除第一时隙上 所有被占用的候选资源；在资源选择窗内的第一时隙上所有候选资源都被占用的情况下，排除第一时隙上被占用的所有候选资源中对应的RSRP最低且不超过第一阈值的候选资源以外的候选资源。
相应地，判断模块在第一资源集合中的候选资源的个数大于等于第二资源集合中的候选资源总数的设定百分比，并且第一资源集合中存在至少N个连续M个时隙的情况下，确定资源排除过程结束。
另一种非限制性的实施方式中，第一资源排除模块，具体用于排除资源选择窗内其他用户设备的预留资源中对应的RSRP大于第一阈值的预留资源。
进一步地，该装置还可包括：测量模块，用于根据测量的资源感知窗内其它用户设备指示预留资源信息的传输信道的RSRP确定预留资源对应的RSRP，传输信道为：PSCCH或PSSCH。
进一步地，第一资源排除模块，还用于将资源选择窗内所有可能的候选资源作为第二资源集合。
另一种非限制性的实施方式中，该装置还可包括：第二资源确定模块，用于将资源选择窗内所有可能的候选资源作为第三资源集合；第二资源排除模块，用于对第三资源集合进行资源排除，得到第四资源集合；相应地，判断模块，还用于判断第四资源集合中的候选资源情况，并在第四资源集合中的候选资源的个数大于等于第三资源集合的候选资源总数的设定百分比，并且第四资源集合存在至少N个连续M个时隙的情况下，确定资源排除过程结束；第一资源确定模块，还用于在第四资源集合中的候选资源的个数小于第三资源集合的候选资源总数的设定百分比，或者第四资源集合不存在至少N个连续M个时隙的情况下，将第三资源集合中没有候选资源的时隙上的所有候选资源作为第二资源集合。
相应地，第二资源排除模块，具体用于排除资源选择窗内其他用户设备的预留资源中对应的RSRP大于第二阈值的预留资源，第二阈 值小于第一阈值。
进一步地，第二资源排除模块，还用于排除资源选择窗内无法感知的时隙上的所有候选资源。
相应地，第一资源排除模块，具体用于对第二资源集合中候选资源所在的时隙，排除时隙上对应的RSRP大于第一阈值的候选资源。
相应地，判断模块在第一资源集合的候选资源及第四资源集合中的候选资源的个数之和大于等于第三资源集合的候选资源总数的设定百分比，并且第一资源集合和第四资源集合中存在至少N个连续M个时隙的情况下，确定资源排除过程结束。
在上述各实施方式中，可选地，候选资源为频域上的至少一个连续的子信道；或者候选资源为频域上的至少一个交织资源。
在另一种非限制性的实施方式中，阈值管理模块，还用于在增加第一步长后的第一阈值大于等于设定的RSRP上限值的情况下，确定停止资源排除过程。
在另一种非限制性的实施方式中，该装置还可包括：统计模块，用于统计以第一步长增加第一阈值的次数，并在次数大于设定的次数阈值的情况下，确定停止资源排除过程。
可选地，第一阈值为预先设定；或者第一阈值为根据待传输业务和/或候选资源上传输的业务的优先级确定。
可选地，第一资源排除模块，还用于排除资源选择窗内无法感知的时隙上的所有候选资源。
另一方面，本发明实施例还提供一种用户设备，包括上述资源选择装置。
另一方面，本发明实施例还提供一种计算机可读存储介质，所述计算机可读存储介质为非易失性存储介质或非瞬态存储介质，其上存储有计算机程序，所述计算机程序被处理器运行时执行上述方法的步 骤。
另一方面，本发明实施例还提供一种电子设备，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，所述处理器运行所述计算机程序时执行上述方法的步骤。
本发明实施例提供的资源选择方法及装置，在针对非授权频段上资源进行资源选择时，不仅考虑各候选资源的频域占用情况，还要考虑各候选资源的时域情况，在存在至少N个连续M个时隙的情况下，停止资源排除过程，从而可以在资源排除过程中，做到尽量选择时域连续的资源，使用户设备确定的候选资源能够在时间上连续，尽可能保证COT不中断，提高传输的可靠性。
进一步地，在进行资源排除时，可以根据资源选择窗内各时隙上的候选资源占用情况进行资源排除，针对所有候选资源都被占用的时隙是，排除该时隙上被占用的所有候选资源中对应的参考信号接收功率(Reference Signal Receiving Power，RSRP)最低且不超过第一阈值的候选资源以外的候选资源，在经过资源排除后得到的资源集合中不存在至少N个连续M个时隙的情况下，增加第一阈值重复该资源排除过程，使最终得到的候选资源能够满足上述条件，即至少有一个候选资源能够在时间上连续M个时隙。
进一步地，在进行资源排除时，还可以尽可能地沿用现有的资源排除机制，只是在判断是否结束资源排除过程时，不仅要满足资源集合中存在至少N个连续M个时隙，而且还要满足候选资源的个数大于等于资源选择窗内所有可能的候选资源总数的设定百分比，也就是说，要同时考虑最终的候选资源的数量及在时间上的连续性，更有效地保证传输的可靠性。
进一步地，在进行资源排除时，还可以先排除资源选择窗内其他用户设备的预留资源中对应的RSRP大于第二阈值的预留资源，在经过该资源排除过程后得到的资源集合中的候选资源的数量或者在时间上的连续性不满足要求的情况下，再只针对没有候选资源的时隙上 的所有候选资源重复进行资源排除，直至最终剩余的候选资源的数量及在时间上的连续性均满足要求的情况下，停止资源排除过程，保证了候选资源的质量。
进一步地，通过限定第一阈值的上限值、或者限定以第一步长增加第一阈值的次数，不仅可以使最终得到的候选资源在数量及时间连续性上尽可能地满足要求，而且有效地避免了选择到的候选资源由于其对应的传输信道质量较差对传输可靠性带来的影响。也就是说，能够均衡信道质量和信道占用时间对信息传输质量的影响，而且也减少了不必要的重复过程，提高了资源选择效率。
附图说明
图1是现有技术中NR V2X资源排除示意图；
图2是本发明实施例资源选择方法的一种流程图；
图3是本发明实施例中频域上多个连续的子信道组成的候选资源示意图；
图4是本发明实施例中频域上多个交织资源组成的候选资源示意图；
图5是本发明实施例资源选择方法的一种具体实施流程图；
图6是本发明实施例资源选择方法的另一种具体实施流程图；
图7是本发明实施例资源选择方法的另一种具体实施流程图；
图8是本发明实施例资源选择装置的一种结构框图；
图9是本发明实施例资源选择装置的另一种结构框图。
具体实施方式
为使本发明的上述目的、特征和有益效果能够更为明显易懂，下面结合附图对本发明的具体实施例做详细的说明。
Sidelink是为了支持V2X设备间直接通信而引入的新链路类型，NR Sidelink主要由物理侧边链路控制信道(Physical Sidelink Control Channel，PSCCH)、物理侧边链路共享信道(Physical Sidelink Shared  Channel，PSSCH)、物理侧边链路广播信道(physical sidelink broadcast channel，PSBCH)、物理侧边链路反馈信道(Physical Sidelink Feedback Channel，PSFCH)组成。
NR V2X的mode 2下，Tx(发送端)UE需要自主选择Sidelink资源，具体地，Tx UE一直在进行感知，当触发了资源选择过程时，根据资源感知窗内的感知结果确定资源选择窗内的候选资源，排除其中不可用的候选资源，最后形成一个候选资源集合上报给介质访问控制(Medio Access Control，MAC)层，MAC层根据资源选择约束条件在该候选资源集合中选择传输资源。
其中，候选资源和不可用的候选资源的确定如下：
候选资源：如果传输资源需要占用L个连续的子信道(sub-channel)，那么资源选择窗内的一个时隙内的任意连续L个子信道是一个候选资源。如果传输资源需要占用L个连续的交织资源，那么资源选择窗内的一个时隙内的任意连续L个交织资源是一个候选资源。
不可用的候选资源：如果Tx UE因为在资源感知窗内某个时隙x不能监听，则从时隙x按资源的可能预留周期往后推算为资源选择窗内的某个时隙y，那么Tx UE就不能获得时隙y内其他UE的资源占用情况，为了避免任何碰撞，对于Tx UE来说，时隙y内的所有候选资源都是不可用的候选资源。
在资源感知窗内接收并解码其他UE的SCI，获得其他UE的资源预留信息，若其他UE预留的资源在资源选择窗内，则通过RSRP进一步判断。如果测量的RSRP大于RSRP阈值，那么判断该候选资源为一个不可用的候选资源。其中，RSRP阈值根据Tx UE和被测量UE的L1优先级确定。
经过上述资源排除过程后，统计资源选择窗内剩余的可用候选资源；如果剩余的候选资源数少于X·M total，那么RSRP阈值增加3dB 重复上述资源排除过程，其中X的值是可配置的，可以是{20％,35％,50％}中一个。这样，最终获得一个候选资源数不少于X·M total的候选资源集合，物理层将这个候选资源集合上报给MAC层。
如图1所示。假设正在做资源感知的设备为UE4，UE4在时刻n有数据包到达，(n-T0，n-T proc,0)为资源感知窗口，(n+T1，n+T2)为资源选择窗口。UE4在时刻n后做资源排除最终确定候选资源集。具体地，首先，将资源选择窗内的所有候选资源组成一个原始候选资源集。UE4将资源感知窗内无法做资源感知的时隙，按所有可能的资源预留周期往后推算，排除掉落在资源选择窗所在时隙的所有候选资源。UE4解码其他UE(如图中的UE1、UE2、UE3)的SCI，获得其他UE的资源预留信息，并做RSRP测量，若测量到RSRP高于阈值，就排除其他UE预留在资源选择窗内的候选资源。如图1中所示，UE4测得UE1的RSRP高于阈值，UE2和UE3的RSRP低于阈值，因此UE4在候选资源集中排除掉UE1预留的资源，最后候选资源集中剩余的资源即为最终的候选资源。
在非授权频段上，UE需要通过LBT获取信道接入机会。所谓LBT是指在开始传输之前首先会侦听其他设备的信道占用情况，检测信道是否空闲，若信道处于繁忙状态则等待信道空闲时再传输，避免信道接入冲突。在非授权频谱的5G NR(5G NR in Unlicensed Spectrum)系统中，若基站或UE确定了COT，在COT内的两次传输时间间隔如果小于16μs，则传输前不需要LBT；若大于16μs，传输前需要LBT；若LBT失败会使得此COT终止。因此在非授权频谱侧边链路(Sidelink in Unlicensed Spectrum，SL-U)系统中，为保证COT不提前终止，需要COT内的传输在时域上尽可能连续。
对于分布式资源分配方式，为了保证传输的可靠性，资源选择时需要选择时间上连续的资源。因此，为了能使NR Sidelink能够在非授权频段上更好地工作，尽可能保证COT不中断，提高SL-U传输的可靠性，本发明实施例提供一种资源选择方法及装置，在进行资源 选择时，综合考虑各候选资源的频域占用情况及时域情况，在存在至少N个连续M个时隙的情况下，停止资源排除过程，否则增加第一阈值重复资源排除过程，从而做到尽量选择时域连续的资源。
需要说明的是，本发明实施例提供的资源选择方法及装置，不仅可以应用于NR Sidelink通信场景下用户设备自主选择传输资源的情况，也可以应用于其他需要用户设备自主选择传输资源的通信场景。
如图2所示，是本发明实施例资源选择方法的一种流程图，包括以下步骤：
步骤201，用户设备确定资源选择窗内的第二资源集合。
在一种非限制性实施例中，第二资源集合可以是初始候选资源集合，即包含资源选择窗内所有可能的候选资源集合。
在另一种非限制性实施例中，第二资源集合可以是经过对上述初始候选资源集合进行了一次资源排除过程后的资源集合。
需要说明的是，在具体实施中，所述候选资源具体可以是频域上的多个连续的子信道，或者是频域上的一个或多个交织资源，对此本发明实施例不做限定。
比如，根据资源感知窗内的感知结果，如果其中传输资源需要占用L个连续的子信道，那么资源选择窗内一个时隙内的任意连续L个子信道构成一个候选资源，其中，L为传输所需资源的长度。例如图3所示，UE在时刻n触发进行资源选择或资源重选，(n-T0，n-T proc,0)为资源感知窗，(n+T1，n+T2)为资源选择窗。在资源选择窗内，有6个从最终候选资源集中确定的传输资源，分别为COT1和COT2内3个时隙上的资源。
再比如，根据资源感知窗内的感知结果，如果其中传输资源需要占用N个交织资源，那么资源选择窗内一个时隙内的任意连续的N个交织资源构成一个候选资源。例如图4所示，行号为0，5，10，15的频域资源组成了交织资源0，行号为1，6，11，16的频域资源 组成了交织资源1，行号为2，7，12，17的频域资源组成了交织资源2，行号为3，8，13，18的频域资源组成了交织资源3，行号为4，9，14，19的频域资源组成了交织资源4，PSSCH1的传输占了索引为0和1两个连续的交织资源，PSSCH2传输占了索引为2的交织资源。
步骤202，对第二资源集合进行资源排除过程，得到第一资源集合。
其中，第一资源集合至少包括一个候选资源。在具体实施时，对第二资源集合中的候选资源进行排除可以有多种不同的排除方式，具体将在后面详细描述。而且，在具体应用时，可以根据需要选用。
需要说明的是，不论采用哪种资源排除方式，在资源排除过程中，都需要考虑资源选择窗内其他用户设备的预留资源中对应的RSRP及第一阈值。
第一阈值是衡量RSRP的一个指标，具体可以是预先设定的，或者是根据待传输业务和/或候选资源上传输的业务的优先级确定的。比如，高层参数配置RSRP阈值表，索引从0到n对应n+1个不同的阈值，候选资源上待传输的其他终端的业务优先级为第一优先级P1，待传输的做资源感知的终端的业务优先级为第二优先级P2。根据候选资源上传输的业务的优先级确定第一阈值的索引值如下：
i＝P1+(P2-1)×8；
其中，i为RSRP阈值表中的索引值，按此索引值查表即可确定第一阈值。
步骤203，判断第一资源集合中是否存在至少N个连续M个时隙；如果是，则执行步骤204；否则，执行步骤205。
其中，N和M均为正整数，比如可以设定N＝2，M＝3。
步骤204，确定资源排除过程结束。
步骤205，以第一步长增加第一阈值。然后，返回步骤202，根据增加第一步长后的第一阈值重复进行资源排除过程。
第一步长可以预先配置或约定，比如可以是2dBm、3dBm等。
本发明实施例提供的资源选择方法，在针对非授权频段上资源进行资源选择时，不仅考虑各候选资源的频域占用情况，还要考虑各候选资源的时域情况，在存在至少N个连续M个时隙的情况下，停止资源排除过程，从而可以在资源排除过程中，做到尽量选择时域连续的资源，使用户设备确定的候选资源能够在时间上连续，尽可能保证COT不中断，提高传输的可靠性。
前面提到，在进行资源排除过程时，可以有多种不同的方式，下面举例分别进行详细说明。
如图5所示，是本发明实施例资源选择方法的一种具体实施流程图。该实施例的资源选择方法包括以下步骤：
首先，在步骤501，用户设备确定资源选择窗内的第二资源集合，即将资源选择窗内所有可能的候选资源集合放入第二资源集合中。
然后，对第二资源合进行资源排除过程，在该实施例中，在进行资源排除时，需要根据资源选择窗内各时隙上的候选资源占用情况进行排除，即在步骤502，根据资源选择窗内各时隙上的候选资源占用情况进行资源排除，得到第一资源集合。
具体地，针对资源选择窗内的各时隙，若该时隙上有未被占用的候选资源，则排除该时隙上所有被占用的候选资源；若该时隙上所有候选资源都被占用，则排除该时隙上被占用的所有候选资源中对应的RSRP最低且不超过第一阈值的候选资源以外的候选资源。
需要说明的是，在另一种非限制性实施例中，在步骤502中，还可进一步排除资源选择窗内无法感知的时隙上的所有候选资源。具体可以是在上述排除操作执行前进行，也可以是在上述排除操作执行后进行，对此不做限定。
在步骤503，判断第一资源集合中是否存在至少N个连续M个时隙；如果是，则执行步骤504；否则，执行步骤505。
步骤504，确定资源排除过程结束。
步骤505，以第一步长增加第一阈值。然后，返回步骤502，根据增加第一步长后的第一阈值重复进行资源排除过程。
经过上述资源排除，最终得到的资源集合中至少有一个候选资源能够在时间上连续M个时隙。
进一步地，在图5所示的资源排除方式的另一种非限制性实施例中，还可以限定第一阈值的上限值、或者限定以第一步长增加第一阈值的次数。
比如，在上述步骤505和步骤502之间，判断增加第一步长后的第一阈值是否大于等于设定的RSRP上限值(比如20dBm)，如果是，则确定停止资源排除过程，即执行步骤504；否则，执行步骤502。
再比如，在上述步骤503和步骤505之间，判断以第一步长增加第一阈值的次数是否大于设定的次数阈值(比如3次)，如果是，则确定停止资源排除过程，即执行步骤504；否则，执行步骤505。
通过上述对第一阈值的限定，可以使最终得到的候选资源在数量及时间连续性上尽可能地满足要求，并避免选择到的候选资源由于其对应的传输信道质量较差对传输可靠性带来的影响。
参照图6所示，图6示出了本发明实施例资源选择方法的另一种具体实施流程图。该实施例的资源选择方法包括以下步骤：
步骤601，用户设备确定资源选择窗内的第二资源集合，即将资源选择窗内所有可能的候选资源集合放入第二资源集合中。
然后，执行步骤602，不同于图5所示实施例中对第二资源合进行资源排除的方式，在该实施例中，在进行资源排除时，需要排除资源选择窗内其他用户设备的预留资源中对应的RSRP大于第一阈值 的预留资源，得到第一资源集合。
需要说明的是，预留资源对应的RSRP是根据用户设备测量的资源感知窗内其它用户设备指示预留资源信息的传输信道的RSRP确定的，传输信道可以是PSCCH或PSSCH。同样，候选资源对应的RSRP也是指用户设备测量的资源感知窗内指示该候选资源信息的传输信道的RSRP。
在另一种非限制性实施例中，在步骤602中，还可进一步排除资源选择窗内无法感知的时隙上的所有候选资源。具体可以是在上述排除操作执行前进行，也可以是在上述排除操作执行后进行，对此不做限定。
在对第二资源集合中的候选资源进行上述资源排除过程后，需要判断是否结束资源排除过程，即执行步骤603。与图5所示实施例不同的是，在该实施例中，进行判断时不仅要考虑第一资源集合中的候选资源的时域上的连续性，还可考虑候选资源的数量，具体如下：
步骤603，判断第一资源集合中的候选资源的个数是否大于等于所述第二资源集合中的候选资源总数的设定百分比，并且第一资源集合中是否存在至少N个连续M个时隙；如果是，则执行步骤604；否则，执行步骤605。
步骤604，确定资源排除过程结束。
步骤605，以第一步长增加第一阈值。然后，返回步602，根据增加第一步长后的第一阈值重复进行资源排除过程。
通过上述资源排除过程，可以保证最终得到的候选资源的数量及在时间上的连续性，提高传输的可靠性。
同样，在图6所示的资源排除方式的另一种非限制性实施例中，还可以限定第一阈值的上限值、或者限定以第一步长增加第一阈值的次数。
参照图7所示，图7示出了本发明实施例资源选择方法的另一种具体实施流程图。该实施例的资源选择方法包括以下步骤：
在步骤701，用户设备将资源选择窗内所有可能的候选资源作为第三资源集合。
然后，在步骤702，对第三资源集合进行一次资源排除过程，排除资源选择窗内其他用户设备的预留资源中对应的RSRP大于第二阈值的预留资源，得到第四资源集合。
进一步地，在另一种非限制性实施例中，在步骤702中在对第三资源合进行资源排除时，还可排除资源选择窗内无法感知的时隙上的所有候选资源。
同样，在另一种非限制性实施例中，在步骤702中，还可进一步排除资源选择窗内无法感知的时隙上的所有候选资源。具体可以是在上述排除操作执行前进行，也可以是在上述排除操作执行后进行，对此不做限定。
然后，在步骤703，判断第四资源集合中的候选资源的个数是否大于等于第三资源集合的候选资源总数M total的设定百分比，并且第四资源集合中是否存在至少N个连续M个时隙；如果是，则执行步骤708；否则，执行步骤704。
步骤704，将第三资源集合中没有候选资源的时隙上的所有候选资源作为第二资源集合，并增加第二阈值得到第一阈值。
步骤705，对第二资源集合中候选资源所在的时隙，排除该时隙上对应的RSRP大于第一阈值的候选资源，得到第一资源集合。
需要说明的是，第一阈值可以是第二阈值以第一步长增加后的值，也就是说，可以将第二阈值看作是第一阈值的初始值。
步骤706，判断第一资源集合中的候选资源及第四资源集合中的候选资源的个数之和是否大于等于第三资源集合的候选资源总数的 设定百分比，并且第一资源集合和所述第四资源集合中是否存在至少N个连续M个时隙；如果是，则执行步骤708；否则，执行步骤707。
步骤707，以第一步长增加第一阈值。然后执行步骤705，对第二资源集合根据增加第一步长后的第一阈值重复进行资源排除过程。
步骤708，确定资源排除过程结束。
图7所示实施例的方案，先排除资源选择窗内其他用户设备的预留资源中对应的RSRP大于第二阈值的预留资源，在候选资源的数量或者在时间上的连续性不满足要求的情况下，再只针对没有候选资源的时隙上的所有候选资源重复进行资源排除，直至最终剩余的候选资源的数量及在时间上的连续性均满足要求的情况下，停止资源排除过程，保证了候选资源的质量。
同样，在图7所示的资源排除方式的另一种非限制性实施例中，还可以限定第一阈值的上限值、或者限定以第一步长增加第一阈值的次数。
相应地，本发明实施例还提供一种资源选择装置，如图8所示，是该装置的一种结构框图。
该资源选择装置800包括：第一资源确定模块80、第一资源排除模块81、判断模块82、阈值管理模块83。其中：
第一资源确定模块80用于确定资源选择窗内的第二资源集合；
第一资源排除模块81用于对第二资源集合进行资源排除过程，得到第一资源集合；
判断模块82用于判断第一资源集合中的候选资源情况，并在第一资源集合中存在至少N个连续M个时隙的情况下，确定资源排除过程结束；
阈值管理模块83用于在判断模块82确定第一资源集合中不存在至少N个连续M个时隙的情况下，以第一步长增加第一阈值。
相应地，第一资源排除模块81还用于根据增加所述第一步长后的第一阈值重复资源排除过程。也就是说，增加第一次阈值后，重复进行资源排除过程。
在一种非限制性实施例中，第二资源集合可以是初始候选资源集合，即包含资源选择窗内所有可能的候选资源集合。
在另一种非限制性实施例中，第二资源集合可以是经过对上述初始候选资源集合进行了一次资源排除过程后的资源集合。
需要说明的是，在具体实施时，第一资源排除模块81可以采用多种方式对第二资源集合中的候选资源进行排除。
比如，在一种非限制性实施例中，第一资源排除模块81可以根据资源选择窗内各时隙上的候选资源情况进行资源排除，具体地，在某时隙上有未被占用的候选资源的情况下，排除该时隙上所有被占用的候选资源；在该时隙上所有候选资源都被占用的情况下，排除该时隙上被占用的所有候选资源中对应的RSRP最低且不超过第一阈值的候选资源以外的候选资源。
再比如，在另一种非限制性实施例中，第一资源排除模块81可以排除资源选择窗内其他用户设备的预留资源中对应的RSRP大于第一阈值的预留资源。相应地，在该实施例中，判断模块82不仅要判断第一资源集合中的候选资源情在时域上的连续情况，还要判断第资源集合中候选资源的数量是否满足要求，具体地，判断模块82在第一资源集合中的候选资源的个数大于等于第二资源集合中的候选资源总数的设定百分比，并且所述第一资源集合中存在至少N个连续M个时隙的情况下，确定资源排除过程结束；否则触发上述阈值管理模块83以第一步长增加第一阈值。
需要说明的是，预留资源对应的RSRP可以由相应的测量模块(未图示)来确定，具体地，测量模块可以根据测量的资源感知窗内所述其它用户设备指示预留资源信息的传输信道的RSRP确定所述 预留资源对应的RSRP，所述传输信道为：PSCCH或PSSCH。
进一步地，第一资源排除模块81还可排除所述资源选择窗内无法感知的时隙上的所有候选资源。
如图9所示，是本发明实施例资源选择装置的另一种结构框图。
与图8所示实施例不同的是，在该实施例中，资源选择装置900还包括：第二资源确定模块90、第二资源排除模块91。
在该实施例中，第二资源确定模块90用于将资源选择窗内所有可能的候选资源作为第三资源集合；第二资源排除模块91用于对第三资源集合进行资源排除，得到第四资源集合；具体地，排除资源选择窗内其他用户设备的预留资源中对应的RSRP大于第二阈值的预留资源。
判断模块82用于判断第四资源集合中的候选资源情况，并在第四资源集合中的候选资源的个数大于等于第三资源集合的候选资源总数的设定百分比，并且第四资源集合存在至少N个连续M个时隙的情况下，确定资源排除过程结束。
第一资源确定模块80在第四资源集合中的候选资源的个数小于第三资源集合的候选资源总数的设定百分比，或者第四资源集合不存在至少N个连续M个时隙的情况下，将所述第三资源集合中没有候选资源的时隙上的所有候选资源作为第二资源集合。
在一种非限制性实施例中，第二资源排除模块91还可以排除资源选择窗内无法感知的时隙上的所有候选资源。
与图4所示实施例不同的是，在该实施例中，第一资源排除模块81用于对上述第二资源集合中候选资源所在的各时隙，排除该时隙上对应的RSRP大于第一阈值的候选资源。
另外，判断模块82还用于在第一资源集合的候选资源及第四资源集合中的候选资源的个数之和大于等于第三资源集合的候选资源 总数的设定百分比，并且第一资源集合和所述第四资源集合中存在至少N个连续M个时隙的情况下，确定资源排除过程结束。
阈值管理模块还83用于在判断模块82确定第一资源集合的候选资源及第四资源集合中的候选资源的个数之和小于第三资源集合的候选资源总数的设定百分比，或者第一资源集合和所述第四资源集合中不存在至少N个连续M个时隙的情况下，以第一步长增加第一阈值。
相应地，第一资源排除模块80还用于根据增加所述第一步长后的第一阈值重复资源排除过程。也就是说，增加第一次阈值后，重复对上述第二资源集合中候选资源所在的各时隙，排除该时隙上对应的RSRP大于第一阈值的候选资源。
进一步地，在上述图8和图9所示本发明资源选择装置的一种非限制性实施例中，阈值管理模块83还可在增加第一步长后的第一阈值大于等于设定的RSRP上限值的情况下，确定停止资源排除过程。
进一步地，在上述图8和图9所示本发明资源选择装置的另一种非限制性实施例中，资源选择装置还可包括：统计模块，用于统计以第一步长增加所述第一阈值的次数，并在该次数大于设定的次数阈值的情况下，确定停止资源排除过程。
通过限定第一阈值的上限值、或者限定以第一步长增加第一阈值的次数，可以均衡信道质量和信道占用时间对信息传输质量的影响，而且也可减少不必要的重复过程，提高了资源选择效率。
本发明实施例提供的资源选择方法及装置，可以应用于支持盲重传和/或支持盲重传和混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)反馈混合的重传方式的SL-U中，也可以应用于所有SL-U的分布式资源分配，对此本发明实施例不做限定。
相应地，本发明实施例还提供一种用户设备，包括上述各实施例的资源选择装置。该用户设备可以自主选择NR Sidelink资源，并且 确定的候选资源能够在时间上连续，尽可能保证COT不中断，使Sidelink的传输具有更高的可靠性。
在具体实施中，上述资源选择装置可以对应于网络设备中的芯片，例如SoC(System-On-a-Chip，片上系统)、基带芯片、芯片模组等。
在具体实施中，关于上述实施例中描述的各个装置、产品包含的各个模块/单元，其可以是软件模块/单元，也可以是硬件模块/单元，或者也可以部分是软件模块/单元，部分是硬件模块/单元。
例如，对于应用于或集成于芯片的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于芯片模组的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于芯片模组的同一组件(例如芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片模组内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于终端的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于终端内同一组件(例如，芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于终端内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现。
本发明实施例还提供了一种计算机可读存储介质，所述计算机可读存储介质为非易失性存储介质或非瞬态存储介质，其上存储有计算机程序，所述计算机程序被处理器运行时执行上述图2或图5或图6或图7对应实施例提供的方法的步骤。
本发明实施例还提供了另一种资源选择装置，包括存储器和处理 器，所述存储器上存储有可在所述处理器上运行的计算机程序，所述处理器运行所述计算机程序时执行上述图2或图5或图6或图7对应实施例所提供的方法的步骤。
本发明实施例还提供了一种电子设备，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，所述处理器运行所述计算机程序时执行上述图2或图5或图6或图7对应实施例所提供的方法的步骤。
在本发明所提供的几个实施例中，应该理解到，所揭露的方法、装置和系统，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系统，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或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。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，在本发明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包括，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，也可以采用硬件加软件功能单元的形式实现。
虽然本发明披露如上，但本发明并非限定于此。任何本领域技术人员，在不脱离本发明的精神和范围内，均可作各种更动与修改，因此本发明的保护范围应当以权利要求所限定的范围为准。

Claims (39)

  1. 一种资源选择方法，其特征在于，所述方法包括：
    确定资源选择窗内的第一资源集合；所述第一资源集合至少包括一个候选资源；
    若所述第一资源集合中存在至少N个连续M个时隙，则确定资源排除过程结束；所述N和M均为正整数。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    若所述第一资源集合中不存在至少N个连续M个时隙，则以第一步长增加第一阈值；
    根据增加所述第一步长后的所述第一阈值重复资源排除过程。
  3. 根据权利要求1或2所述的方法，其特征在于，所述确定资源选择窗内的第一资源集合包括：
    确定所述资源选择窗内的第二资源集合；
    对所述第二资源集合进行资源排除过程，得到第一资源集合。
  4. 根据权利要求3所述的方法，其特征在于，所述对所述第二资源集合进行资源排除过程包括：
    判断所述资源选择窗内时隙上的候选资源占用情况；
    若所述资源选择窗内的第一时隙上有未被占用的候选资源，则排除所述第一时隙上所有被占用的候选资源；
    若所述资源选择窗内的第一时隙上所有候选资源都被占用，则排除所述第一时隙上被占用的所有候选资源中对应的RSRP最低且不超过所述第一阈值的候选资源以外的候选资源。
  5. 根据权利要求3所述的方法，其特征在于，所述若所述第一资源集合中存在至少N个连续M个时隙，则确定资源排除过程结束 包括：
    若所述第一资源集合中的候选资源的个数大于等于所述第二资源集合中的候选资源总数的设定百分比，并且所述第一资源集合中存在至少N个连续M个时隙，则确定资源排除过程结束。
  6. 根据权利要求5所述的方法，其特征在于，所述对所述第二资源集合进行资源排除过程包括：
    排除所述资源选择窗内其他用户设备的预留资源中对应的RSRP大于所述第一阈值的预留资源。
  7. 根据权利要求6所述的方法，其特征在于，所述方法还包括：
    根据测量的资源感知窗内所述其它用户设备指示预留资源信息的传输信道的RSRP确定所述预留资源对应的RSRP，所述传输信道为：PSCCH或PSSCH。
  8. 根据权利要求4至7任一项所述的方法，其特征在于，所述确定所述资源选择窗内的第二资源集合包括：
    将所述资源选择窗内所有可能的候选资源作为所述第二资源集合。
  9. 根据权利要求3所述的方法，其特征在于，所述确定所述资源选择窗内的第二资源集合包括：
    将所述资源选择窗内所有可能的候选资源作为第三资源集合；
    对所述第三资源集合进行资源排除，得到第四资源集合；
    若所述第四资源集合中的候选资源的个数小于所述第三资源集合的候选资源总数的设定百分比，或者所述第四资源集合不存在至少N个连续M个时隙，则将所述第三资源集合中没有候选资源的时隙上的所有候选资源作为第二资源集合。
  10. 根据权利要求9所述的方法，其特征在于，所述对所述第三 资源集合进行资源排除包括：
    排除所述资源选择窗内其他用户设备的预留资源中对应的RSRP大于第二阈值的预留资源，所述第二阈值小于所述第一阈值。
  11. 根据权利要求10所述的方法，其特征在于，所述对所述第三资源集合进行资源排除还包括：
    排除所述资源选择窗内无法感知的时隙上的所有候选资源。
  12. 根据权利要求9所述的方法，其特征在于，所述对所述第二资源集合进行资源排除过程包括：
    对所述第二资源集合中候选资源所在的时隙，排除所述时隙上对应的RSRP大于所述第一阈值的候选资源。
  13. 根据权利要求12所述的方法，其特征在于，所述若所述第一资源集合中存在至少N个连续M个时隙，则确定资源排除过程结束包括：
    若所述第一资源集合中的候选资源及所述第四资源集合中的候选资源的个数之和大于等于所述第三资源集合的候选资源总数的设定百分比，并且所述第一资源集合和所述第四资源集合中存在至少N个连续M个时隙，则确定资源排除过程结束。
  14. 根据权利要求1所述的方法，其特征在于，所述候选资源为频域上的至少一个连续的子信道；或者所述候选资源为频域上的至少一个交织资源。
  15. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    在根据增加所述第一步长后的所述第一阈值重复资源排除过程之前，若增加所述第一步长后的所述第一阈值大于等于设定的RSRP上限值，则确定停止资源排除过程。
  16. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    如果以所述第一步长增加所述第一阈值的次数大于设定的次数阈值，则确定停止资源排除过程。
  17. 根据权利要求3所述的方法，其特征在于，所述方法还包括：
    所述第一阈值为预先设定；或者
    所述第一阈值为根据待传输业务和/或候选资源上传输的业务的优先级确定。
  18. 根据权利要求3所述的方法，其特征在于，所述对所述第二资源集合进行资源排除过程还包括：
    排除所述资源选择窗内无法感知的时隙上的所有候选资源。
  19. 一种资源选择装置，其特征在于，所述装置包括：
    第一资源排除模块，用于确定资源选择窗内的第一资源集合；所述第一资源集合至少包括一个候选资源；
    判断模块，用于判断所述第一资源集合中的候选资源情况，并在所述第一资源集合中存在至少N个连续M个时隙的情况下，确定资源排除过程结束；所述N和M均为正整数。
  20. 根据权利要求19所述的装置，其特征在于，所述装置还包括：
    阈值管理模块，用于在所述判断模块确定所述第一资源集合中不存在至少N个连续M个时隙的情况下，以第一步长增加第一阈值；
    所述第一资源排除模块，还用于根据增加所述第一步长后的所述第一阈值重复资源排除过程。
  21. 根据权利要求19或20所述的装置，其特征在于，所述装置还包括：
    第一资源确定模块，用于确定所述资源选择窗内的第二资源集合；
    所述第一资源排除模块对所述第二资源集合进行资源排除过程，得到第一资源集合。
  22. 根据权利要求21所述的装置，其特征在于，
    所述第一资源排除模块，具体用于在所述资源选择窗内的第一时隙上有未被占用的候选资源的情况下，排除所述第一时隙上所有被占用的候选资源；在所述资源选择窗内的第一时隙上所有候选资源都被占用的情况下，排除所述第一时隙上被占用的所有候选资源中对应的RSRP最低且不超过所述第一阈值的候选资源以外的候选资源。
  23. 根据权利要求21所述的装置，其特征在于，
    所述判断模块在所述第一资源集合中的候选资源的个数大于等于所述第二资源集合中的候选资源总数的设定百分比，并且所述第一资源集合中存在至少N个连续M个时隙的情况下，确定资源排除过程结束。
  24. 根据权利要求23所述的装置，其特征在于，
    所述第一资源排除模块，具体用于排除所述资源选择窗内其他用户设备的预留资源中对应的RSRP大于所述第一阈值的预留资源。
  25. 根据权利要求24所述的装置，其特征在于，所述装置还包括：
    测量模块，用于根据测量的资源感知窗内所述其它用户设备指示预留资源信息的传输信道的RSRP确定所述预留资源对应的RSRP，所述传输信道为：PSCCH或PSSCH。
  26. 根据权利要求22至25任一项所述的装置，其特征在于，
    所述第一资源排除模块，还用于将所述资源选择窗内所有可能的候选资源作为所述第二资源集合。
  27. 根据权利要求21所述的装置，其特征在于，所述装置还包 括：
    第二资源确定模块，用于将所述资源选择窗内所有可能的候选资源作为第三资源集合；
    第二资源排除模块，用于对所述第三资源集合进行资源排除，得到第四资源集合；
    所述判断模块，还用于判断所述第四资源集合中的候选资源情况，并在所述第四资源集合中的候选资源的个数大于等于所述第三资源集合的候选资源总数的设定百分比，并且所述第四资源集合存在至少N个连续M个时隙的情况下，确定资源排除过程结束；
    所述第一资源确定模块，还用于在所述第四资源集合中的候选资源的个数小于所述第三资源集合的候选资源总数的设定百分比，或者所述第四资源集合不存在至少N个连续M个时隙的情况下，将所述第三资源集合中没有候选资源的时隙上的所有候选资源作为第二资源集合。
  28. 根据权利要求27所述的装置，其特征在于，
    所述第二资源排除模块，具体用于排除所述资源选择窗内其他用户设备的预留资源中对应的RSRP大于第二阈值的预留资源，所述第二阈值小于所述第一阈值。
  29. 根据权利要求28所述的装置，其特征在于，
    所述第二资源排除模块，还用于排除所述资源选择窗内无法感知的时隙上的所有候选资源。
  30. 根据权利要求27所述的装置，其特征在于，
    所述第一资源排除模块，具体用于对所述第二资源集合中候选资源所在的时隙，排除所述时隙上对应的RSRP大于所述第一阈值的候选资源。
  31. 根据权利要求30所述的装置，其特征在于，
    所述判断模块在所述第一资源集合的候选资源及所述第四资源集合中的候选资源的个数之和大于等于所述第三资源集合的候选资源总数的设定百分比，并且所述第一资源集合和所述第四资源集合中存在至少N个连续M个时隙的情况下，确定资源排除过程结束。
  32. 根据权利要求19所述的装置，其特征在于，所述候选资源为频域上的至少一个连续的子信道；或者所述候选资源为频域上的至少一个交织资源。
  33. 根据权利要求20所述的装置，其特征在于，
    所述阈值管理模块，还用于在增加所述第一步长后的所述第一阈值大于等于设定的RSRP上限值的情况下，确定停止资源排除过程。
  34. 根据权利要求20所述的装置，其特征在于，所述装置还包括：
    统计模块，用于统计以所述第一步长增加所述第一阈值的次数，并在所述次数大于设定的次数阈值的情况下，确定停止资源排除过程。
  35. 根据权利要求21所述的装置，其特征在于，
    所述第一阈值为预先设定；或者
    所述第一阈值为根据待传输业务和/或候选资源上传输的业务的优先级确定。
  36. 根据权利要求21所述的装置，其特征在于，
    所述第一资源排除模块，还用于排除所述资源选择窗内无法感知的时隙上的所有候选资源。
  37. 一种用户设备，其特征在于，包括如权利要求19至36任一项所述的资源选择装置。
  38. 一种计算机可读存储介质，所述计算机可读存储介质为非易失性存储介质或非瞬态存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器运行时执行权利要求1至18中任一项所述方法的步骤。
  39. 一种电子设备，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，其特征在于，所述处理器运行所述计算机程序时执行权利要求1至18中任一项所述方法的步骤。
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CN117279046A (zh) * 2022-06-14 2023-12-22 维沃移动通信有限公司 资源处理方法、装置及终端
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200029340A1 (en) * 2018-07-19 2020-01-23 Samsung Electronics Co., Ltd. Method and apparatus for nr v2x resource selection
WO2020191769A1 (zh) * 2019-03-28 2020-10-01 Oppo广东移动通信有限公司 传输侧行信道的方法和终端设备
CN112740809A (zh) * 2018-09-24 2021-04-30 三星电子株式会社 非授权nr的竞争窗口大小适配的方法和装置
CN113099471A (zh) * 2021-04-01 2021-07-09 之江实验室 一种直连通信中候选资源集的确定方法
CN113302868A (zh) * 2019-01-10 2021-08-24 苹果公司 在未许可nr中的初始接入期间物理上行链路控制信道的资源分配

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200037343A1 (en) * 2018-07-24 2020-01-30 Samsung Electronics Co., Ltd. Method and apparatus for network controlled resource allocation in nr v2x
WO2021007686A1 (en) * 2019-07-12 2021-01-21 Guangdong Oppo Mobile Telecommunications Corp., Ltd. User equipment and method for resource exclusion and selection in new radio sidelink communication of same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200029340A1 (en) * 2018-07-19 2020-01-23 Samsung Electronics Co., Ltd. Method and apparatus for nr v2x resource selection
CN112740809A (zh) * 2018-09-24 2021-04-30 三星电子株式会社 非授权nr的竞争窗口大小适配的方法和装置
CN113302868A (zh) * 2019-01-10 2021-08-24 苹果公司 在未许可nr中的初始接入期间物理上行链路控制信道的资源分配
WO2020191769A1 (zh) * 2019-03-28 2020-10-01 Oppo广东移动通信有限公司 传输侧行信道的方法和终端设备
CN113099471A (zh) * 2021-04-01 2021-07-09 之江实验室 一种直连通信中候选资源集的确定方法

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