WO2021098559A1 - 资源选择方法及终端 - Google Patents

资源选择方法及终端 Download PDF

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Publication number
WO2021098559A1
WO2021098559A1 PCT/CN2020/128005 CN2020128005W WO2021098559A1 WO 2021098559 A1 WO2021098559 A1 WO 2021098559A1 CN 2020128005 W CN2020128005 W CN 2020128005W WO 2021098559 A1 WO2021098559 A1 WO 2021098559A1
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WIPO (PCT)
Prior art keywords
time
evaluation
resource selection
resource
terminal
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PCT/CN2020/128005
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English (en)
French (fr)
Inventor
姜炜
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维沃移动通信有限公司
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Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Priority to EP20888837.0A priority Critical patent/EP4064772A4/en
Priority to JP2022523316A priority patent/JP7358637B2/ja
Priority to BR112022007234A priority patent/BR112022007234A2/pt
Priority to KR1020227018243A priority patent/KR20220088935A/ko
Publication of WO2021098559A1 publication Critical patent/WO2021098559A1/zh
Priority to US17/742,006 priority patent/US20220272709A1/en

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    • 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
    • H04W72/50—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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H04W74/0825—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision detection
    • 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 disclosure relates to the field of communication technology, and in particular, to a resource selection method and terminal.
  • Mode 1 refers to a mode in which a network device such as a base station gNB performs resource allocation
  • Mode 2 refers to a mode in which a terminal such as a user equipment (User Equipment, UE) autonomously selects resources.
  • UE User Equipment
  • the Mode 2 resource allocation mode since the UE selects its own resources, after the UE selects resources, if the corresponding resource reservation signaling is sent later, other UEs may not detect the UE’s resource reservation, and again Select this resource, causing resource collision.
  • the embodiments of the present disclosure provide a resource selection method and terminal to solve the problem of resource collision that may be caused when the terminal autonomously selects resources in the related art.
  • embodiments of the present disclosure provide a resource selection method applied to a terminal, including:
  • a terminal including:
  • the evaluation module is used to trigger resource selection re-evaluation based on trigger conditions, and perform resource selection re-evaluation to obtain the re-evaluation result;
  • the selection module is used to perform resource reselection according to the re-evaluation result.
  • the embodiments of the present disclosure provide a terminal, including a memory, a processor, and a computer program stored on the memory and capable of running on the processor, and the computer program is implemented when the processor is executed The steps of the above resource selection method.
  • an embodiment of the present disclosure provides a computer-readable storage medium on which a computer program is stored, and the computer program implements the steps of the above-mentioned resource selection method when the computer program is executed by a processor.
  • the terminal may trigger resource selection re-evaluation based on the triggering condition, perform resource selection re-evaluation, obtain the re-evaluation result, and perform resource re-evaluation according to the re-evaluation result.
  • the terminal can re-evaluate the resources in the resource selection window and reserve the available resources after autonomously selecting resources, thereby selecting more suitable transmission resources and avoiding resource collisions.
  • FIG. 1 is a flowchart of a resource selection method according to an embodiment of the disclosure
  • FIG. 2 is one of the schematic diagrams of triggering re-evaluation in an embodiment of the disclosure
  • FIG. 3 is the second schematic diagram of triggering re-evaluation in an embodiment of the disclosure.
  • FIG. 4 is the third schematic diagram of triggering re-evaluation in an embodiment of the disclosure.
  • FIG. 5 is the fourth schematic diagram of triggering re-evaluation in an embodiment of the disclosure.
  • FIG. 6 is the fifth schematic diagram of triggering re-evaluation in an embodiment of the disclosure.
  • FIG. 7A is one of the schematic diagrams of resource preemption in an embodiment of the disclosure.
  • FIG. 7B is the second schematic diagram of resource preemption in an embodiment of the disclosure.
  • FIG. 7C is the third schematic diagram of resource preemption in an embodiment of the disclosure.
  • FIG. 7D is the fourth schematic diagram of resource preemption in an embodiment of the disclosure.
  • FIG. 7E is the fifth schematic diagram of resource preemption in an embodiment of the disclosure.
  • FIG. 7F is the sixth schematic diagram of resource preemption in an embodiment of the disclosure.
  • FIG. 8 is one of schematic structural diagrams of a terminal according to an embodiment of the disclosure.
  • FIG. 9 is the second structural diagram of a terminal according to an embodiment of the disclosure.
  • a sidelink refers to a link between a terminal such as a user equipment (User Equipment, UE) and the UE for direct data transmission without going through the network.
  • the sending UE can send control information (such as Sidelink Control Information (SCI)) through the Physical Sidelink Control Channel (PSCCH), and through the Physical Sidelink Shared Data Channel (Physical Sidelink Shared). Channel, PSSCH) to send data.
  • SCI Sidelink Control Information
  • PSSCH Physical Sidelink Shared Data Channel
  • the receiving UE can demodulate the control information, and determine the transport block size, modulation and coding method, allocated resources, etc. according to the demodulated control information; after that, the receiving UE can use the information
  • the data is received and demodulated on the corresponding time-frequency resource.
  • the UE can demodulate SCI and perform Reference Signal Receiving Power (RSRP) measurement in each transmission time interval (Transmission Time Interval, TTI) to obtain resource reservation and RSRP measurement values
  • RSRP Reference Signal Receiving Power
  • TTI Transmission Time Interval
  • Step1 Identify the candidate resources in the resource selection window.
  • 1) Exclude the slot resource for the terminal (UE) to send data; 2) Exclude the resource selection window from being reserved by other UEs based on the resource reservation and RSRP measurement value obtained in the sensing window And the relevant SL-RSRP measurement value is greater than the slot resource of the SL-RSRP threshold; 3) If the candidate resources identified in the resource selection window are less than the preset percentage of the total resources in the resource selection window, such as X% , The SL-RSRP threshold is increased by a preset bit, for example, by 3dB, so that more resources can become candidate resources.
  • Step2 Randomly select resources from the identified candidate resources in the resource selection window, and reserve the resources.
  • the reservation of retransmission resources can be supported, and the reservation of semi-persistent scheduling (SPS) resources can also be supported.
  • SPS semi-persistent scheduling
  • the resource pre-emption mechanism is supported.
  • the resource reserved by a UE overlaps (or partially overlaps) with the resources reserved by other UEs with higher priority services, and the SL-RSRP measurement value of these UEs on the related resources is greater than a certain associated (associated)
  • the SL-RSRP threshold is set, UEs with low priority services will trigger resource reselection.
  • the relevant SL-RSRP threshold here may be a predefined or fixed RSRP threshold pre-configured by the base station.
  • the fixed RSRP threshold may be based on the priority of the UE's own services to be transmitted (that is, the current transport block (Transport Block, TB)), packet delay budget (PDB), service type, and quality of service (Quality of Service).
  • the mapping relationship between information such as QoS) and reliability and the SL-RSRP threshold is determined.
  • the applicable scenario of the embodiment of the present disclosure may be a sidelink scenario, for example, including but not limited to an NR sidelink scenario.
  • m the time when the resource reservation signaling is sent
  • n resource selection or reselection trigger time
  • T1 The time required for the terminal's own processing for resource selection
  • T3 The duration for the terminal to perform resource selection processing
  • n+T1 the starting point of the resource selection window
  • n+T2 The end of the resource selection window.
  • FIG. 1 is a flowchart of a resource selection method provided by an embodiment of the present disclosure. The method is applied to a terminal. As shown in FIG. 1, the method includes the following steps:
  • Step 101 Trigger a resource selection re-evaluation based on a trigger condition, and perform a resource selection re-evaluation to obtain a re-evaluation result.
  • the aforementioned trigger condition may include any one of the following: a continuous or semi-static trigger condition, and a non-periodic trigger condition.
  • the above-mentioned resource selection re-evaluation process can be performed through the above step 1 and step 2, and the corresponding re-evaluation result may include: a preset percentage (X%) of candidate resources selected by the terminal in the resource selection window.
  • the preset percentage may be predefined (for example, pre-defined by a protocol), or pre-configured by a network device (for example, a base station).
  • the trigger resource selection re-evaluation may occur before the time'm-T3'.
  • Step 102 Perform resource reselection according to the re-evaluation result.
  • the terminal may perform resource reselection from the preset percentage of candidate resources obtained from the re-evaluation based on the re-evaluation result and when certain conditions are met.
  • the terminal may trigger resource selection re-evaluation based on trigger conditions, perform resource selection re-evaluation, obtain a re-evaluation result, and perform resource re-selection according to the re-evaluation result.
  • the terminal can re-evaluate the resources in the resource selection window and reserve the available resources after autonomously selecting resources, thereby selecting more suitable transmission resources and avoiding resource collisions.
  • the aforementioned continuous or semi-static trigger conditions may include but are not limited to at least one of the following:
  • Trigger period the trigger period is the first time value.
  • the first time value in 1) can be expressed as a Tf value.
  • the terminal can trigger resource selection re-evaluation with the Tf value being periodic, continuous or semi-static.
  • the UE may trigger a semi-static resource selection re-evaluation after triggering resource selection (for example, time n or n+T1).
  • the UE may trigger a semi-static resource selection re-evaluation when there are reserved resources.
  • the Tf value may be used as a period to periodically trigger resource selection re-evaluation.
  • the Tf value may be configured for each resource pool (per resource pool); or, the Tf value may be configured for each terminal (per UE).
  • the Tf value can be any of the following:
  • Network equipment such as base station
  • control node such as controlling UE, Road Side Unit (RSU), etc.
  • Tf values For example, for HARQ feedback configured and HARQ feedback not configured, there may be different Tf values, that is, different periods.
  • Tf values for UEs with different UE processing capabilities, there may be different Tf values, that is, different periods.
  • Tf values that is, different periods. For example, the higher the priority, the smaller the Tf value and the shorter the period.
  • the time interval between two adjacent resource selection re-evaluations is less than or equal to the second time value.
  • the second time value may be the same as the above-mentioned first time value, or may be different from the above-mentioned first time value.
  • the UE may trigger a semi-static resource selection re-evaluation after triggering resource selection (for example, time n or n+T1).
  • triggering resource selection for example, time n or n+T1.
  • the n is the resource selection or reselection trigger moment
  • the n+T1 is the starting point of the resource selection window
  • the T1 duration is the duration of its own processing required by the UE for resource selection.
  • the UE may trigger a semi-static resource selection re-evaluation when there are reserved resources.
  • the second time value is equivalent to the upper limit of the re-evaluation period.
  • the second time value can be any of the following:
  • Network equipment such as base stations
  • control nodes such as controlling UE, RSU, etc.
  • the mapping relationship with at least one of the following: the priority of the current service to be transmitted (that is, the current TB), at least one of PDB, service type, QoS and reliability, SL-RSRP threshold, CBR, CR, HARQ feedback information, etc.
  • the preset number of triggers in 3) (for example, N times, where N is an integer greater than 0) may be the maximum number of triggers for resource selection re-evaluation.
  • the triggering of resource selection re-evaluation based on the trigger condition in step 101 may include: after the terminal triggers the resource selection, or In the case that the terminal has reserved resources, trigger the resource selection re-evaluation of the preset number of triggers.
  • the preset trigger times can be any of the following:
  • Network equipment such as base stations
  • control nodes such as controlling UE, RSU, etc.
  • the mapping relationship with at least one of the following: the priority of the current service to be transmitted (that is, the current TB), at least one of PDB, service type, QoS and reliability, SL-RSRP threshold, CBR, CR, HARQ feedback information, etc.
  • the aforementioned aperiodic trigger condition may include at least one of the following:
  • the resource selection re-evaluation is triggered at the first moment before the sending moment of the resource reservation signaling.
  • the first time and the sending time (m) are separated by a first time length (T4).
  • the T4 is greater than or equal to T3.
  • the T4 may be pre-defined (for example, protocol predefined), or pre-configured by network equipment (for example, base station).
  • the time unit of the first moment can be any of the following: slot, subframe, millisecond (ms), mini-slot (or translated as mini-slot, etc.), Frame and so on.
  • the time unit of T4 can be any of the following: slot, subframe, ms, mini-slot, frame, etc.
  • a resource selection re-evaluation (Re-evaluation) is triggered.
  • the resource selection re-evaluation is triggered at a second time before the start time of each reserved resource, and the second time is a second time period away from the start time (T5).
  • the T5 is greater than or equal to T3.
  • a resource selection re-evaluation is triggered at a third time before the transmission or retransmission time of each TB, and the third time is a third time period away from the transmission or retransmission time (T6).
  • the resource selection re-evaluation is triggered at the fourth time after the end of the previous evaluation or re-evaluation, that is, the next re-evaluation is triggered.
  • the fourth time is separated from the end time by a fourth time period (T7).
  • the resource selection re-evaluation is triggered at the trigger time of the resource selection or the fifth time after the re-evaluation time, and the fifth time is a fifth time period away from the trigger time or the re-evaluation time (T8).
  • the resource selection re-evaluation is triggered after the resource selection trigger time (n) or the re-evaluation time (n+ ⁇ , n+T1, or n+T1+ ⁇ ).
  • the resource selection re-evaluation is triggered at the sixth moment after the moment when it is detected that the reserved resources are preempted.
  • the sixth time is a sixth time period (T9) away from the time when it is detected that the reserved resource is preempted.
  • a resource selection re-evaluation is triggered at the seventh time after receiving negative-acknowledgment (Negative-Acknowledgment, NACK) information and there are no remaining available resources, and the seventh time is a seventh time away from the receiving time of the NACK information (T10).
  • NACK negative-acknowledgment
  • the resource selection re-evaluation is triggered at the eighth time after the service arrives but there is no available semi-static reserved resource in the PDB or the resource selection window.
  • the eighth time is an eighth time period away from the arrival time of the service (T11).
  • the resource selection re-evaluation is triggered.
  • the resource selection re-evaluation is triggered at the ninth time after the transmission time of the TB.
  • the number of retransmissions of the TB exceeds the maximum number of retransmissions.
  • the ninth time is separated from the transmission time by a ninth time period (T12).
  • the resource selection re-evaluation is triggered at the tenth time after receiving the radio link control (Radio link Control, RLC) trigger retransmission information, and the tenth time is tenth away from the receiving time of the RLC trigger retransmission information. Duration (T13).
  • RLC Radio link Control
  • the resource selection re-evaluation is triggered at the eleventh moment after it is determined that the reserved resources are no longer available based on any one of the following: the transmission conflict with the Uu interface causes the current SL transmission to be cancelled (drop), the current SL transmission and other wireless The SL transmission conflict of the access technology (Radio Access Technology, RAT), the current carrier transmission conflicts with other carrier transmissions during multi-carrier transmission.
  • the transmission conflict with the Uu interface causes the current SL transmission to be cancelled (drop), the current SL transmission and other wireless
  • the current carrier transmission conflicts with other carrier transmissions during multi-carrier transmission.
  • the eleventh time is away from the time when it is determined that the reserved resource is no longer available (T14).
  • the current SL transmission is NR SL transmission
  • the SL transmission of other RATs is LTE SL transmission.
  • the measurement feedback in 12 is, for example, channel state information (CSI), RSRP, and so on.
  • the preset number may be pre-defined (for example, protocol predefined), or pre-configured by network equipment (for example, base station).
  • any one of the above-mentioned T5, T6, T7, T8, T9, T10, T11, T12, T13, T14 and ⁇ can be predefined (for example, predefined by the protocol), or network
  • the equipment for example, the base station
  • T5, T6, T7, T8, T9, T10, T11, T12, T13, T14 and ⁇ is greater than or equal to 0, and the corresponding unit is a time unit, which can be any of the following: slot, subframe , Ms, mini-slot, frame, etc.
  • the time unit of any one of the above-mentioned second time, third time, fourth time, fifth time, sixth time, seventh time, eighth time, ninth time, tenth time and eleventh time It can be any of the following: slot, subframe, ms, mini-slot, frame, etc.
  • the process of performing resource selection re-evaluation in step 101 to obtain the re-evaluation result may include: when performing resource selection re-evaluation, determining a preset percentage (X%) of candidate resources in the resource selection window . That is, the re-evaluation result in step 101 may include a preset percentage (X%) of candidate resources selected by the terminal in the resource selection window.
  • the SL-RSRP threshold used to determine the preset percentage (X%) of candidate resources may be determined based on any one of the following:
  • the preset may be to obtain the SL-RSRP threshold corresponding to each priority according to the priority of each TB.
  • the method in the related technology can be used, which is not limited in this embodiment. After obtaining the candidate resource, the terminal can report it to the higher layer.
  • step 102 may include: when at least one of the following is satisfied To reselect resources:
  • the preset percentage of candidate resources does not include previously reserved resources or includes part of previously reserved resources.
  • the terminal may perform resource reselection based on the remaining resources after the previous evaluation.
  • the selected candidate resource may be different from the previous candidate resource.
  • the terminal detects that the resources reserved by other terminals conflict with the preset percentage of candidate resources.
  • the X% of candidate resources obtained during each evaluation or re-evaluation is the same.
  • the X% is, for example, 20%, 30%, etc.
  • the 20% candidate resources obtained by the UE in the previous evaluation are slot1, slot2, slot3, slot4, and slot5
  • the 20% candidate resources obtained by the UE in this evaluation are slot1, slot2, slot6, slot7, and slot8, and the above-mentioned preset ratio Y
  • the value of% is 50%, because compared with the 20% candidate resources obtained in the previous evaluation, there are 60% different resources (ie slot6, slot7 and slot8) in the 20% candidate resources obtained in this evaluation, 60% More than 50%, so the UE will perform resource reselection.
  • the terminal can select a more appropriate resource to transmit information and ensure the terminal's transmission performance.
  • the terminal in the embodiment of the present disclosure may also perform resource reselection when the resource selection reassessment is triggered. That is, as long as the resource selection re-evaluation is triggered, no matter what the re-evaluation result is, the terminal will perform resource re-evaluation.
  • the conditions for resource reselection can be the same as the conditions for resource selection and reassessment.
  • the terminal may perform resource reselection.
  • the associated (associated) SL-RSRP threshold used to determine that the resource reserved by the terminal is preempted can be any of the following:
  • the first threshold value in 1) may be determined according to at least one of the following:
  • the first RSRP threshold is the SL-RSRP threshold used by the terminal to obtain a preset percentage (X%) of candidate resources in the latest resource selection evaluation or re-evaluation.
  • the second RSRP threshold is the average value of multiple SL-RSRP thresholds used by the terminal to obtain a preset percentage (X%) of candidate resources in a recent preset resource selection evaluation or re-evaluation. Any one of, maximum or minimum.
  • the preset time may be pre-defined (for example, pre-defined by a protocol), or pre-configured by a network device (for example, a base station).
  • the preset times are S times, and S is an integer greater than 1.
  • the preset time may be a preset number of resource selection evaluations or re-evaluations within a time window.
  • the third RSRP threshold is an SL-RSRP threshold used for determining a preset percentage (X%) of candidate resources of a high-priority service terminal that preempts resources.
  • the third RSRP threshold may be carried in the SCI of the high-priority service UE.
  • a maximum value can be selected from the multiple SL-RSRP thresholds carried in the SCI of the multiple high-priority service UEs ( (Or minimum value, average value) as the third RSRP threshold; alternatively, the UE with the highest priority can be selected from the multiple high-priority service UEs, and the SL- carried in the SCI of the UE with the highest priority can be selected.
  • the RSRP threshold is used as the third RSRP threshold.
  • the terminal can directly determine the first threshold value according to any one of the first RSRP threshold value, the second RSRP threshold value and the third RSRP threshold value, that is, directly set the first RSRP threshold value. Any one of the RSRP threshold, the second RSRP threshold, and the third RSRP threshold is used as the first threshold.
  • the terminal may also determine the first threshold value according to at least two RSRP threshold values among the first RSRP threshold value, the second RSRP threshold value, and the third RSRP threshold value.
  • the first threshold value may be a higher priority one selected by the terminal from the at least two RSRP threshold values according to a preset priority order.
  • the preset priority order may be predefined (for example, pre-defined by a protocol), or pre-configured by a network device (for example, a base station).
  • the preset priority order may include: the priority of the first RSRP threshold is higher than the priority of the second RSRP threshold and the priority of the third RSRP threshold. That is, among the above-mentioned first, second and third RSRP thresholds, the first RSRP threshold has the highest priority.
  • the preset offset may be predefined (for example, predefined by a protocol), or preconfigured by a network device (for example, a base station).
  • the sum of the first threshold value and the preset offset may be used as the relevant SL-RSRP threshold.
  • resource pre-emption situations may include but are not limited to the following:
  • the UE with high priority services reserves (or preempts) the initial transmission resources reserved by the UE for the current TB, that is, the triangle in Figure 7A replaces the blank rectangle.
  • the resource reservation (preemption) signaling of the UE with the high-priority service may be sent before the time (m-T3), for example, at the time a.
  • the UE with high priority services reserves (or preempts) the retransmission resources reserved by the UE for the current TB, that is, the triangle in Figure 7B replaces the rectangle representing the retransmission resources.
  • the resource reservation (preemption) signaling of the UE with the high-priority service may be sent before the time (m-T3), for example, at the time a.
  • the UE with high priority services reserves (or preempts) the retransmission resources reserved by the UE for the current TB, that is, the triangle in Figure 7C replaces the rectangle representing the retransmission resources.
  • the resource reservation (preemption) signaling of the UE with a high-priority service may be sent after time m, for example, at time a.
  • the UE with high priority services reserves (or preempts) the semi-statically reserved resources of the UE.
  • the arrival time (time b) of the latest service (TB) of this UE may be sent before the resource reservation (preemption) signaling of the UE with the high priority service is sent, and the resource reservation (preemption) signaling is sent at time a.
  • the UE with high priority services reserves (or preempts) the semi-statically reserved resources of the UE.
  • the arrival time (time b) of the latest service (TB) of this UE may be sent at time a after the resource reservation (preemption) signaling of the UE with the high-priority service is sent.
  • the UE with high-priority services reserves (or preempts) the semi-statically reserved resources of the UE.
  • the resource reservation (preemption) signaling of the UE with a high-priority service may be sent within the time period from m-T3 to m, for example, at time a.
  • FIG. 8 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure. As shown in FIG. 8, the terminal 80 includes:
  • the evaluation module 81 is configured to trigger resource selection re-evaluation based on trigger conditions, and perform resource selection re-evaluation, to obtain a re-evaluation result;
  • the selection module 82 is configured to perform resource reselection according to the re-evaluation result.
  • the trigger condition includes any one of the following:
  • the continuous or semi-static trigger condition includes at least one of the following:
  • a trigger period where the trigger period is a first time value
  • the time interval between two adjacent resource selection reassessments is less than or equal to the second time value
  • the evaluation module 81 may be configured to: after the terminal triggers resource selection, or, in the case where the terminal has reserved resources, The resource selection re-evaluation that triggers the preset number of triggers.
  • any one of the first time value, the second time value, and the preset number of triggers is any one of the following:
  • mapping relationship Determined according to the mapping relationship with at least one of the following: at least one of the priority of the current service to be transmitted, PDB, service type, QoS and reliability, SL-RSRP threshold, CBR, CR, HARQ feedback information, etc. .
  • the non-periodic trigger condition includes at least one of the following:
  • the resource selection re-evaluation is triggered at the seventh time after receiving the NACK information and there are no remaining available resources.
  • the seventh time is a seventh time away from the receiving time of the NACK information, and the available resources are required to meet the QoS requirements. Required resources;
  • the resource selection re-evaluation is triggered at the eighth time after the service arrives but there are no available semi-static reserved resources in the PDB or the resource selection window, and the eighth time is an eighth time away from the arrival time of the service;
  • the resource selection re-evaluation is triggered at the eleventh moment after determining that the reserved resource is no longer available based on any of the following, and the eleventh moment is an eleventh time period away from the moment when the reserved resource is determined to be no longer available:
  • the transmission conflict with the Uu interface causes the current SL transmission to be cancelled, the current SL transmission conflicts with the SL transmission of other RATs, and the current carrier transmission conflicts with other carrier transmissions;
  • the time unit of the first moment and the first duration is any one of the following:
  • the evaluation module 81 may be used to determine a preset percentage of candidate resources in the resource selection window when performing resource selection re-evaluation.
  • the SL-RSRP threshold used to determine the preset percentage of candidate resources is determined based on any one of the following:
  • the preset TB priority The preset TB priority.
  • the selection module 82 may be used for:
  • the preset percentage of candidate resources does not include previously reserved resources, or includes part of previously reserved resources
  • the terminal detects that resources reserved by other terminals conflict with the preset percentage of candidate resources
  • the selection module 82 is further configured to perform resource reselection when the terminal triggers a resource selection reassessment.
  • the selection module 82 is further configured to perform resource reselection when it is determined according to the re-evaluation result that other terminals with high-priority services have preempted the resources reserved by the terminal;
  • the relevant SL-RSRP threshold value used to determine that the resource reserved by the terminal is preempted is any one of the following: a first threshold value, a value obtained based on the first threshold value and a preset offset;
  • the first threshold value is determined according to at least one of the following:
  • a first RSRP threshold where the first RSRP threshold is an SL-RSRP threshold used by the terminal to obtain a preset percentage of candidate resources in the most recent resource selection evaluation or re-evaluation;
  • a second RSRP threshold where the second RSRP threshold is a plurality of SL-RSRP thresholds used by the terminal to obtain a preset percentage of candidate resources in a resource selection evaluation or re-evaluation performed recently. Any one of the average value, maximum value or minimum value of;
  • a third RSRP threshold where the third RSRP threshold is an SL-RSRP threshold of a high-priority service terminal that preempts resources for determining a preset percentage of candidate resources.
  • the first threshold is determined according to at least two RSRP thresholds among the first RSRP threshold, the second RSRP threshold, and the third RSRP threshold Time
  • the first threshold value is a higher priority one selected by the terminal from the at least two RSRP threshold values according to a preset priority order.
  • the preset priority sequence includes: the priority of the first RSRP threshold is higher than the priority of the second RSRP threshold and the priority of the third RSRP threshold.
  • the terminal 80 of the embodiment of the present disclosure can implement the various processes implemented in the method embodiment shown in FIG. 1 and achieve the same beneficial effects. To avoid repetition, details are not described herein again.
  • the embodiment of the present disclosure further provides a terminal, including a processor, a memory, and a computer program stored on the memory and capable of running on the processor, wherein the computer program is executed by the processor to realize the above
  • a terminal including a processor, a memory, and a computer program stored on the memory and capable of running on the processor, wherein the computer program is executed by the processor to realize the above
  • the various processes of the embodiment of the resource selection method applied to the terminal can achieve the same technical effect. In order to avoid repetition, details are not repeated here.
  • FIG. 9 is a schematic diagram of the hardware structure of a terminal for implementing various embodiments of the present disclosure.
  • the terminal 900 includes but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, and a display
  • the terminal structure shown in FIG. 9 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine some components, or arrange different components.
  • the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
  • the processor 910 is configured to trigger resource selection re-evaluation based on trigger conditions, perform resource selection re-evaluation, and obtain a re-evaluation result; and perform resource re-evaluation according to the re-evaluation result.
  • the terminal 900 of the embodiment of the present disclosure can implement the various processes implemented in the method embodiment shown in FIG. 1 and achieve the same beneficial effects. To avoid repetition, details are not described herein again.
  • the radio frequency unit 901 can be used for receiving and sending signals in the process of sending and receiving information or talking. Specifically, after receiving the downlink data from the base station, it is processed by the processor 910; Uplink data is sent to the base station.
  • the radio frequency unit 901 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the radio frequency unit 901 can also communicate with the network and other devices through a wireless communication system.
  • the terminal provides users with wireless broadband Internet access through the network module 902, such as helping users to send and receive emails, browse web pages, and access streaming media.
  • the audio output unit 903 can convert the audio data received by the radio frequency unit 901 or the network module 902 or stored in the memory 909 into an audio signal and output it as sound. Moreover, the audio output unit 903 may also provide audio output related to a specific function performed by the terminal 900 (for example, call signal reception sound, message reception sound, etc.).
  • the audio output unit 903 includes a speaker, a buzzer, a receiver, and the like.
  • the input unit 904 is used to receive audio or video signals.
  • the input unit 904 may include a graphics processing unit (GPU) 9041 and a microphone 9042.
  • the graphics processor 9041 is configured to provide an image of a still picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode.
  • the data is processed.
  • the processed image frame may be displayed on the display unit 906.
  • the image frames processed by the graphics processor 9041 may be stored in the memory 909 (or other storage medium) or sent via the radio frequency unit 901 or the network module 902.
  • the microphone 9042 can receive sound and can process such sound into audio data.
  • the processed audio data can be converted into a format that can be sent to a mobile communication base station via the radio frequency unit 901 for output in the case of a telephone call mode.
  • the terminal 900 also includes at least one sensor 905, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor includes an ambient light sensor and a proximity sensor.
  • the ambient light sensor can adjust the brightness of the display panel 9061 according to the brightness of the ambient light.
  • the proximity sensor can close the display panel 9061 and/or when the terminal 900 is moved to the ear. Or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when stationary, and can be used to identify terminal gestures (such as horizontal and vertical screen switching, related games, Magnetometer attitude calibration), vibration recognition related functions (such as pedometer, percussion), etc.; sensor 905 can also include fingerprint sensor, pressure sensor, iris sensor, molecular sensor, gyroscope, barometer, hygrometer, thermometer, infrared Sensors, etc., will not be repeated here.
  • the display unit 906 is used to display information input by the user or information provided to the user.
  • the display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc.
  • LCD liquid crystal display
  • OLED organic light-emitting diode
  • the user input unit 907 may be used to receive inputted numeric or character information, and generate key signal input related to user settings and function control of the terminal.
  • the user input unit 907 includes a touch panel 9071 and other input devices 9072.
  • the touch panel 9071 also called a touch screen, can collect the user's touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 9071 or near the touch panel 9071. operating).
  • the touch panel 9071 may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the user's touch position, and detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 910, the command sent by the processor 910 is received and executed.
  • the touch panel 9071 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave.
  • the user input unit 907 may also include other input devices 9072.
  • other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.
  • the touch panel 9071 can cover the display panel 9061.
  • the touch panel 9071 detects a touch operation on or near it, it transmits it to the processor 910 to determine the type of the touch event, and then the processor 910 determines the type of the touch event according to the touch.
  • the type of event provides corresponding visual output on the display panel 9061.
  • the touch panel 9071 and the display panel 9061 are used as two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 9071 and the display panel 9061 can be integrated. Realize the input and output functions of the terminal, the specifics are not limited here.
  • the interface unit 908 is an interface for connecting an external device and the terminal 900.
  • the external device may include a wired or wireless headset port, an external power source (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (I/O) port, video I/O port, headphone port, etc.
  • the interface unit 908 may be used to receive input (for example, data information, power, etc.) from an external device and transmit the received input to one or more elements in the terminal 900 or may be used to communicate between the terminal 900 and the external device. Transfer data between.
  • the memory 909 can be used to store software programs and various data.
  • the memory 909 may mainly include a storage program area and a storage data area.
  • the storage program area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data created by the use of mobile phones (such as audio data, phone book, etc.), etc.
  • the memory 909 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
  • the processor 910 is the control center of the terminal. It uses various interfaces and lines to connect various parts of the entire terminal, and executes by running or executing software programs and/or modules stored in the memory 909, and calling data stored in the memory 909. Various functions of the terminal and processing data, so as to monitor the terminal as a whole.
  • the processor 910 may include one or more processing units; optionally, the processor 910 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface, application programs, etc., and the modem
  • the adjustment processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 910.
  • the terminal 900 may also include a power source 911 (such as a battery) for supplying power to various components.
  • a power source 911 such as a battery
  • the power source 911 may be logically connected to the processor 910 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. And other functions.
  • terminal 900 may also include some functional modules not shown, which will not be repeated here.
  • the embodiments of the present disclosure also provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, each process of the above-mentioned resource selection method embodiment applied to a terminal can be realized, and To achieve the same technical effect, in order to avoid repetition, I will not repeat them here.
  • the computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk, or an optical disk.
  • the technical solution of the present disclosure essentially or the part that contributes to the related technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk). ) Includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present disclosure.
  • a terminal which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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Abstract

本公开实施例提供一种资源选择方法及终端，其中，所述资源选择方法包括：基于触发条件触发资源选择重评估，并进行资源选择重评估，得到重评估结果；根据所述重评估结果，进行资源重选。

Description

资源选择方法及终端 技术领域
本公开涉及通信技术领域，尤其涉及一种资源选择方法及终端。
背景技术
在相关技术中的新无线(New Radio，NR)车联网中，根据资源分配主体的不同，可分为模式1(Mode 1)和模式2(Mode 2)两种资源分配方式。Mode 1是指由网络设备比如基站gNB执行资源分配的模式，Mode 2是指由终端比如用户设备(User Equipment，UE)自主资源选择的模式。但对于Mode 2资源分配模式，由于由UE自主资源选择，因此在UE进行资源选择后，如果对应资源预留信令较晚发送，则其他UE可能检测不到该UE的资源预留，并再次选择该资源，造成资源碰撞。
发明内容
本公开实施例提供一种资源选择方法及终端，以解决相关技术中的终端自主选择资源时可能造成资源碰撞的问题。
第一方面，本公开实施例提供一种资源选择方法，应用于终端，包括：
基于触发条件触发资源选择重评估，并进行资源选择重评估，得到重评估结果；
根据所述重评估结果，进行资源重选。
第二方面，本公开实施例提供一种终端，包括：
评估模块，用于基于触发条件触发资源选择重评估，并进行资源选择重评估，得到重评估结果；
选择模块，用于根据所述重评估结果，进行资源重选。
第三方面，本公开实施例提供一种终端，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现上述资源选择方法的步骤。
第四方面，本公开实施例提供一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现上述资源选择方法的步骤。
在本公开实施例中，终端可以基于触发条件触发资源选择重评估，并进行资源选择重评估，得到重评估结果，以及根据所述重评估结果，进行资源重选。由此借助重评估及资源重选过程，可以使得终端在自主选择资源后，重新评估资源选择窗内的资源并对可用资源进行预留，从而选择更合适的传输资源，避免资源碰撞。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本公开实施例的资源选择方法的流程图；
图2为本公开实施例中触发重评估的示意图之一；
图3为本公开实施例中触发重评估的示意图之二；
图4为本公开实施例中触发重评估的示意图之三；
图5为本公开实施例中触发重评估的示意图之四；
图6为本公开实施例中触发重评估的示意图之五；
图7A为本公开实施例中资源抢占的示意图之一；
图7B为本公开实施例中资源抢占的示意图之二；
图7C为本公开实施例中资源抢占的示意图之三；
图7D为本公开实施例中资源抢占的示意图之四；
图7E为本公开实施例中资源抢占的示意图之五；
图7F为本公开实施例中资源抢占的示意图之六；
图8为本公开实施例的终端的结构示意图之一；
图9为本公开实施例的终端的结构示意图之二。
具体实施方式
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，还可以根据这些附图获得其他的附图。
为了便于理解本公开，首先说明以下内容。
旁链路(Sidelink，SL)是指终端比如用户设备(User Equipment，UE)和UE之间不通过网络，进行直接数据传输的链路。发送UE可以通过物理旁链路控制信道(Physical Sidelink Control Channel，PSCCH)发送控制信息(比如，旁链路控制信息(Sidelink Control Information，SCI))，以及通过物理旁链路数据信道(Physical Sidelink Shared Channel，PSSCH)发送数据。接收UE在接收到控制信息后，可以解调出控制信息，并根据解调出的控制信息来确定传输块的大小，调制编码方式，分配的资源等；之后，接收UE可以再根据这些信息在相应的时频资源上接收数据并进行解调。
对于Mode 2资源分配模式，UE可在每个传输时间间隔(Transmission Time Interval，TTI)内解调SCI以及进行参考信号接收功率(Reference Signal Receiving Power，RSRP)测量，获得资源预留、RSRP测量值等信息，并根据在检测窗(sensing window)内获得的资源预留、RSRP测量值等信息，对资源选择窗内的资源进行资源排除和预留。该资源排除和预留的过程可如下：
Step1：鉴别资源选择窗中的候选资源。可选地，1)排除本终端(UE)发送数据的时隙(slot)资源；2)基于sensing窗内获得的资源预留、RSRP测量值等信息，排除资源选择窗内被其他UE预留并且相关SL-RSRP测量值大于SL-RSRP门限值的时隙(slot)资源；3)如果资源选择窗中鉴别出的候选资源少于资源选择窗中总资源数的预设百分比如X％，则该SL-RSRP门限值增加预设比特，比如增加3dB，从而让更多资源可以成为候选资源。
Step2：在资源选择窗内从鉴别出的候选资源中随机选择资源，并进行资源预留。此步骤中，可以支持重传资源的预留，也可以支持半静态(Semi-Persistent Scheduling，SPS)资源的预留。
此外，在Mode 2资源分配模式中，资源抢占(Resource pre-emption)机制被支持。当一个UE已经预留的资源和其它具有更高优先级业务的UE所 预留的资源重叠(或部分重叠)，并且这些UE在相关资源上的SL-RSRP测量值大于某个相关(associated)SL-RSRP门限值时，低优先级业务的UE会触发资源的重新选择。这里的相关SL-RSRP门限值可以是一个预定义或者基站预配置的固定的RSRP门限。该固定的RSRP门限可以基于UE自身待传输业务(即当前传输块(Transport Block，TB))的优先级、包时延预算(Packet Delay Budget，PDB)、业务类型、服务质量(Quality of Service，QoS)、可靠性等信息与SL-RSRP门限值的映射关系确定。
本公开实施例适用的场景可选为sidelink场景，比如包括但不限于NR sidelink场景。
为了便于理解和避免重复说明，在此首先对以下说明内容及附图中所涉及的符号说明如下：
m：资源预留信令发送的时刻；
n：资源选择或重选触发时刻；
T1：终端进行资源选择所需的自身处理时长；
T3：终端进行资源选择处理的时长；
n+T1：资源选择窗的起点；
n+T2：资源选择窗的终点。
下面将结合附图对本公开实施例进行详细说明。
请参见图1，图1是本公开实施例提供的一种资源选择方法的流程图，该方法应用于终端，如图1所示，该方法包括如下步骤：
步骤101：基于触发条件触发资源选择重评估，并进行资源选择重评估，得到重评估结果。
本实施例中，上述触发条件可包括以下任意一项：持续性的或半静态的触发条件、非周期性的触发条件。上述资源选择重评估的过程可通过上述的step1和step2进行，而对应的重评估结果可包括：终端在资源选择窗内选择出的预设百分比(X％)的候选资源。该预设百分比可以是预定义的(比如，协议预定义的)，或者网络设备(比如，基站)预配置的。
一种实施方式中，触发资源选择重评估(re-evaluation)可以发生在‘m-T3’时刻之前。
步骤102：根据所述重评估结果，进行资源重选。
本实施例中，在得到重评估结果之后，终端可根据该重评估结果并在满足一定条件的情况下，从重评估得到的预设百分比的候选资源中进行资源重选。
本公开实施例的资源选择方法，终端可以基于触发条件触发资源选择重评估，并进行资源选择重评估，得到重评估结果，以及根据所述重评估结果，进行资源重选。由此借助重评估及资源重选过程，可以使得终端在自主选择资源后，重新评估资源选择窗内的资源并对可用资源进行预留，从而选择更合适的传输资源，避免资源碰撞。
本公开实施例中，上述的持续性的或半静态的触发条件可包括但不限于以下至少一项：
1)触发周期，所述触发周期为第一时间值。
可选的，此1)中的第一时间值可表示为Tf值。终端可以Tf值为周期，持续性的或半静态的触发资源选择重评估。
一种实施方式中，UE可在触发资源选择(比如n或n+T1时刻)后，触发半静态的资源选择重评估。
另一种实施方式中，UE可在有预留资源的情况下，触发半静态的资源选择重评估。
比如，参见图2所示，UE在触发资源选择后或在有预留资源的情况下，可以以Tf值为周期，周期性地触发资源选择重评估。
可选的，该Tf值可以是针对每个资源池(per resource pool)配置的；或者，该Tf值可以是针对每个终端(per UE)配置的。
可选的，该Tf值可为以下任意一项：
①预定义的；比如，协议预定义的；
②网络设备(比如基站)或控制节点(比如控制UE、路侧单元(Road Side Unit，RSU)等)配置的；
③根据与以下至少一项的映射关系确定的：当前待传输业务(即当前TB)的优先级、PDB、业务类型、QoS和可靠性中的至少一者、SL-RSRP门限值、信道繁忙比(Channel Busy Ratio，CBR)、信道占用比(Channel occupancy Ratio， CR)、混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)反馈信息等。
例如，对于配置了HARQ反馈和没有配置HARQ反馈，可以有不同的Tf值，即有不同的周期。
又例如，对于具有不同UE处理能力的UE，可以有不同的Tf值，即有不同的周期。
又例如，对于具有不同优先级的UE，可以有不同的Tf值，即有不同的周期。比如，优先级越高，Tf值越小，周期越短。
2)相邻两次的资源选择重评估的时间间隔小于或等于第二时间值。
可选的，该第二时间值可以与上述的第一时间值相同，也可以与上述的第一时间值不同。
一种实施方式中，UE可在触发资源选择(比如时刻n或n+T1)后，触发半静态的资源选择重评估。其中该n为资源选择或重选触发时刻，该n+T1为资源选择窗的起点，T1时长是UE进行资源选择所需的自身处理时长。
另一种实施方式中，UE可在有预留资源的情况下，触发半静态的资源选择重评估。
可理解的，此2)中，第二时间值相当于重评估周期的上限。该第二时间值可为以下任意一项：
①预定义的；比如，协议预定义的；
②网络设备(比如基站)或控制节点(比如控制UE、RSU等)配置的；
③根据与以下至少一项的映射关系确定的：当前待传输业务(即当前TB)的优先级、PDB、业务类型、QoS和可靠性中的至少一者、SL-RSRP门限值、CBR、CR、HARQ反馈信息等。
3)预设触发次数
可选的，此3)中的预设触发次数(如N次，N为大于0的整数)可为资源选择重评估的最大触发次数。
一种实施方式中，在上述持续性的或半静态的触发条件包括预设触发次数的情况下，上述步骤101中的基于触发条件触发资源选择重评估可包括：在终端触发资源选择后，或者，在终端具有预留资源的情况下，触发所述预 设触发次数的资源选择重评估。
可选的，该预设触发次数可为以下任意一项：
①预定义的；比如，协议预定义的；
②网络设备(比如基站)或控制节点(比如控制UE、RSU等)配置的；
③根据与以下至少一项的映射关系确定的：当前待传输业务(即当前TB)的优先级、PDB、业务类型、QoS和可靠性中的至少一者、SL-RSRP门限值、CBR、CR、HARQ反馈信息等。
本公开实施例中，上述的非周期性的触发条件可包括以下至少一项：
1)在资源预留信令的发送时刻之前的第一时刻触发资源选择重评估。
其中，所述第一时刻与所述发送时刻(m)相距第一时长(T4)。该T4大于或等于T3。该T4可以是预定义的(比如，协议预定义的)，或者网络设备(比如，基站)预配置的。
可选的，第一时刻的时间单位可为以下任意一项：时隙(slot)、子帧(subframe)、毫秒(ms)、小时隙(mini-slot，或译为微时隙等)、帧(frame)等。该T4的时间单位可为以下任意一项：slot、subframe、ms、mini-slot、frame等。
例如，参见图3所示，在m时刻之前的(m-T4)时刻，触发资源选择重评估(Re-evaluation)。
2)在每个预留资源的开始时刻之前的第二时刻触发资源选择重评估，所述第二时刻与所述开始时刻相距第二时长(T5)。
可选的，该T5大于或等于T3。
3)在每个TB的传输或重传时刻之前的第三时刻触发资源选择重评估，所述第三时刻与所述传输或重传时刻相距第三时长(T6)。
4)在前一次评估或重评估的结束时刻之后的第四时刻触发资源选择重评估，即触发下一次重评估。所述第四时刻与所述结束时刻相距第四时长(T7)。
5)在资源选择的触发时刻或重评估时刻之后的第五时刻触发资源选择重评估，所述第五时刻与所述触发时刻或所述重评估时刻相距第五时长(T8)。
比如，参见图4所示，在资源选择的触发时刻(n)或重评估时刻(n+Δ、n+T1或者n+T1+Δ)之后才触发资源选择重评估。
6)在检测到预留资源被抢占的时刻之后的第六时刻触发资源选择重评估。所述第六时刻与所述检测到预留资源被抢占的时刻相距第六时长(T9)。
7)在接收到否定应答(Negative-Acknowledgment，NACK)信息且没有剩余的可用资源时之后的第七时刻触发资源选择重评估，所述第七时刻与所述NACK信息的接收时刻相距第七时长(T10)。
比如，参见图5所示，在接收到NACK信息且没有剩余的可用资源时(t1时刻)之后的(t1+T10)时刻，触发资源选择重评估。
8)在业务到达，但PDB或资源选择窗内没有可用的半静态预留资源时之后的第八时刻触发资源选择重评估。所述第八时刻与所述业务的到达时刻相距第八时长(T11)。
比如，参见图6所示，在业务到达，但PBD(或选择窗)内没有可用的半静态预留资源时的T11时长之后，触发资源选择重评估。
9)在TB的传输时刻之后的第九时刻触发资源选择重评估。所述TB的重传次数超过最大重传次数。所述第九时刻与所述传输时刻相距第九时长(T12)。
10)在接收到无线链路控制(Radio link Control，RLC)触发重传信息之后的第十时刻触发资源选择重评估，所述第十时刻与所述RLC触发重传信息的接收时刻相距第十时长(T13)。
11)在基于以下任意一项确定预留资源不再可用时之后的第十一时刻触发资源选择重评估：与Uu接口的传输冲突导致当前SL传输被取消(drop)、当前SL传输与其他无线接入技术(Radio Access Technology，RAT)的SL传输冲突、在多载波传输时当前载波传输与其他载波传输冲突。
其中，所述第十一时刻与确定所述预留资源不再可用的时刻相距第十一时长(T14)。比如，当前SL传输为NR SL传输，而其他RAT的SL传输为LTE SL传输。
12)根据终端的测量反馈触发。
其中，此12)中的测量反馈例如为信道状态信息(Channel State Information，CSI)、RSRP等。
13)当接收到确认应答(Acknowledgment，ACK)信息且有预留资源时 触发。
14)在连续接收到预设个数的NACK信息之后触发。
其中，该预设个数可以是预定义的(比如，协议预定义的)，或者网络设备(比如，基站)预配置的。
需说明的是，上述的T5、T6、T7、T8、T9、T10、T11、T12、T13、T14和Δ中的任意一者，可以是预定义的(比如，协议预定义的)，或者网络设备(比如，基站)预配置的。
上述的T5、T6、T7、T8、T9、T10、T11、T12、T13、T14和Δ中的任意一者大于或等于0，且相应单位为时间单位，可为以下任意一项：slot、subframe、ms、mini-slot、frame等。
上述的第二时刻、第三时刻、第四时刻、第五时刻、第六时刻、第七时刻、第八时刻、第九时刻、第十时刻和第十一时刻中的任意一者的时间单位可为以下任意一项：slot、subframe、ms、mini-slot、frame等。
这样，借助上述触发条件的设定，可以避免终端频繁的进行资源选择重评估，从而减小终端处理复杂度，保证终端处理复杂度和系统性功能的平衡。
本公开实施例中，上述步骤101中的进行资源选择重评估，得到重评估结果的过程可包括：当进行资源选择重评估时，在资源选择窗内确定预设百分比(X％)的候选资源。即上述步骤101中的重评估结果可包括终端在资源选择窗内选择出的预设百分比(X％)的候选资源。
可选的，用于确定该预设百分比(X％)的候选资源所使用的SL-RSRP门限值可以是基于以下任意一项确定的：
1)当前TB的优先级(priority)。
2)预设(default)的TB优先级。
例如，该预设可以是根据每个TB的优先级，得到每个优先级对应的SL-RSRP门限值。
需说明的是，此1)和2)中在根据TB优先级确定对应的SL-RSRP门限值时，可以采用相关技术中的方式，本实施例不对此进行限制。终端在得到候选资源之后可上报给高层。
可选的，当上述步骤101中的重评估结果包括终端在资源选择窗内选择 出的预设百分比(X％)的候选资源时，上述步骤102可包括：在满足以下至少一项的情况下，进行资源重选：
1)所述预设百分比的候选资源中不包括先前预留的资源，或包括部分先前预留的资源。
一种实施方式中，此1)下，终端可以基于上一次的评估后的剩余资源内进行资源重选。
可理解的，在资源选择窗口(selection window)内，重新进行资源评估时，选择的候选资源可以不同于上一次的候选资源。
2)终端检测到其他终端预留的资源与所述预设百分比的候选资源存在冲突。
3)所述预设百分比(X％)的候选资源与前一次评估时得到的预设百分比(X％)的候选资源之间存在大于预设比例(Y％)的不同资源。
其中，终端在进行多次评估或重评估时，每次评估或重评估时得到的候选资源的X％是一样。该X％比如为20％、30％等。
例如，若UE前一次评估得到的20％候选资源是slot1、slot2、slot3、slot4和slot5，UE本次评估得到的20％候选资源是slot1、slot2、slot6、slot7和slot8，上述预设比例Y％的取值为50％，则由于相比于前一次评估得到的20％候选资源，本次评估得到的20％候选资源中存在60％的不同资源(即slot6、slot7和slot8)，60％大于50％，因此UE将进行资源重选。
这样，借助上述有关资源重选的条件的设定，可以使得终端选择更合适的资源传输信息，保证终端传输性能。
此外，本公开实施例中的终端还可在触发了资源选择重评估的情况下，进行资源重选。即，只要触发了资源选择重评估，不管重评估结果是什么，终端都会进行资源重选。此种情况下，资源重选的条件可以与资源选择重评估的条件相同。
本公开实施例中，如果终端根据重评估结果确定出其他具有高优先级业务的终端抢占了其自身预留的资源，则终端可以进行资源重选。其中用于确定终端预留的资源被抢占的相关(associated)SL-RSRP门限值可为以下任意一项：
1)第一门限值。
可选的，此1)中的第一门限值可以是根据以下至少一项确定的：
①第一RSRP门限值
其中，所述第一RSRP门限值为终端在最近一次的资源选择评估或重评估中，用于得到预设百分比(X％)候选资源的SL-RSRP门限值。
需指出的，如果最近一次资源选择评估或重评估的结果是过期的，则终端可忽略这次评估/重评估。
②第二RSRP门限值
其中，所述第二RSRP门限值为终端在最近预设次的资源选择评估或重评估中，用于得到预设百分比(X％)候选资源的多个SL-RSRP门限值的平均值、最大值或最小值中的任意一者。
可选的，该预设次可以是预定义的(比如，协议预定义的)，或者网络设备(比如，基站)预配置的。比如，该预设次为S次，S为大于1的整数。
或者，该预设次可以是预设的在一个时间窗内的资源选择评估或重评估的次数。
③第三RSRP门限值
其中，所述第三RSRP门限值为抢占资源的高优先级业务终端的用于确定预设百分比(X％)候选资源的SL-RSRP门限值。
一种实施方式中，该第三RSRP门限值可以是携带在高优先级业务UE的SCI中。
另一种实施方式中，如果有多个高优先级业务UE抢占了资源，则可从该多个高优先级业务UE的SCI中携带的多个SL-RSRP门限值中选择一个最大值(或最小值、平均值)作为第三RSRP门限值；或者，可从该多个高优先级业务UE中选择优先级最高的UE，并将该优先级最高的UE的SCI中携带的SL-RSRP门限值作为第三RSRP门限值。
可理解的，此1)中，终端可以直接根据第一RSRP门限值、第二RSRP门限值和第三RSRP门限值中的任意一者确定第一门限值，即直接将第一RSRP门限值、第二RSRP门限值和第三RSRP门限值中的任意一者作为第一门限值。
或者，终端也可以根据第一RSRP门限值、第二RSRP门限值和第三RSRP门限值中的至少两个RSRP门限值确定第一门限值。此时，所述第一门限值可以是终端依据预设优先级顺序，从所述至少两个RSRP门限值中选择的优先级高的一个。
可选的，该预设优先级顺序可以是预定义的(比如，协议预定义的)，或者网络设备(比如，基站)预配置的。
一种实施方式中，该预设优先级顺序可包括：第一RSRP门限值的优先级高于，第二RSRP门限值和第三RSRP门限值的优先级。即上述的第一、第二和第三RSRP门限值中，第一RSRP门限值的优先级最高。
2)基于第一门限值和预设偏移量得到的值。
可选的，此2)中，该预设偏移量(offset)可以是预定义的(比如，协议预定义的)，或者网络设备(比如，基站)预配置的。
一种实施方式中，在基于第一门限值和预设偏移量得到相关SL-RSRP门限值时，可以将第一门限值和预设偏移量之和作为相关SL-RSRP门限值。
本公开实施例中，对于资源抢占(pre-emption)的情形，可包括但不限于以下几种：
1、如图7A所述，具有高优先级业务的UE预留(或抢占)了本UE为当前TB预留的初传资源，即图7A中三角形取代了空白矩形。该具有高优先级业务的UE的资源预留(抢占)信令可在(m-T3)时刻之前发送，比如在a时刻发送。
2、如图7B所述，具有高优先级业务的UE预留(或抢占)了本UE为当前TB预留的重传资源，即图7B中三角形取代了表示重传资源的矩形。该具有高优先级业务的UE的资源预留(抢占)信令可在(m-T3)时刻之前发送，比如在a时刻发送。
3、如图7C所述，具有高优先级业务的UE预留(或抢占)了本UE为当前TB预留的重传资源，即图7C中三角形取代了表示重传资源的矩形。该具有高优先级业务的UE的资源预留(抢占)信令可在m时刻之后发送，比如在a时刻发送。
4、如图7D所述，具有高优先级业务的UE预留(或抢占)了本UE半 静态预留的资源。本UE最新业务(TB)的到达时刻(b时刻)可在该具有高优先级业务的UE的资源预留(抢占)信令发送之前，该资源预留(抢占)信令在a时刻发送。
5、如图7E所述，具有高优先级业务的UE预留(或抢占)了本UE半静态预留的资源。本UE最新业务(TB)的到达时刻(b时刻)可在该具有高优先级业务的UE的资源预留(抢占)信令发送之后，该资源预留(抢占)信令在a时刻发送。
6、如图7F所述，具有高优先级业务的UE预留(或抢占)了本UE半静态预留的资源。该具有高优先级业务的UE的资源预留(抢占)信令可在m-T3至m的时间段之内发送，比如在a时刻发送。
上述实施例对本公开的资源选择方法进行了说明，下面将结合实施例和附图对本公开的终端进行说明。
请参见图8，图8是本公开实施例提供的一种终端的结构示意图，如图8所示，该终端80包括：
评估模块81，用于基于触发条件触发资源选择重评估，并进行资源选择重评估，得到重评估结果；
选择模块82，用于根据所述重评估结果，进行资源重选。
可选的，所述触发条件包括以下任意一项：
持续性的或半静态的触发条件；
非周期性的触发条件。
可选的，所述持续性的或半静态的触发条件包括以下至少一项：
触发周期，所述触发周期为第一时间值；
相邻两次的资源选择重评估的时间间隔小于或等于第二时间值；
预设触发次数。
可选的，在所述触发条件包括预设触发次数的情况下，所述评估模块81可以用于：在所述终端触发资源选择后，或者，在所述终端具有预留资源的情况下，触发所述预设触发次数的资源选择重评估。
可选的，所述第一时间值、所述第二时间值和所述预设触发次数中的任意一者，为以下任意一项：
预定义的；
网络设备或控制节点配置的；
根据与以下至少一项的映射关系确定的：当前待传输业务的优先级、PDB、业务类型、QoS和可靠性中的至少一者、SL-RSRP门限值、CBR、CR、HARQ反馈信息等。
可选的，所述非周期性的触发条件包括以下至少一项：
在资源预留信令的发送时刻之前的第一时刻触发资源选择重评估，所述第一时刻与所述发送时刻相距第一时长；
在每个预留资源的开始时刻之前的第二时刻触发资源选择重评估，所述第二时刻与所述开始时刻相距第二时长；
在每个TB的传输或重传时刻之前的第三时刻触发资源选择重评估，所述第三时刻与所述传输或重传时刻相距第三时长；
在前一次评估或重评估的结束时刻之后的第四时刻触发资源选择重评估，所述第四时刻与所述结束时刻相距第四时长；
在资源选择的触发时刻或重评估时刻之后的第五时刻触发资源选择重评估，所述第五时刻与所述触发时刻或所述重评估时刻相距第五时长；
在检测到预留资源被抢占的时刻之后的第六时刻触发资源选择重评估，所述第六时刻与所述检测到预留资源被抢占的时刻相距第六时长；
在接收到NACK信息且没有剩余的可用资源时之后的第七时刻触发资源选择重评估，所述第七时刻与所述NACK信息的接收时刻相距第七时长，所述可用资源为满足QoS要求所需的资源；
在业务到达，但PDB或资源选择窗内没有可用的半静态预留资源时之后的第八时刻触发资源选择重评估，所述第八时刻与所述业务的到达时刻相距第八时长；
在TB的传输时刻之后的第九时刻触发资源选择重评估，所述TB的重传次数超过最大重传次数，所述第九时刻与所述传输时刻相距第九时长；
在接收到RLC触发重传信息之后的第十时刻触发资源选择重评估，所述第十时刻与所述RLC触发重传信息的接收时刻相距第十时长；
在基于以下任意一项确定预留资源不再可用时之后的第十一时刻触发资 源选择重评估，所述第十一时刻与确定所述预留资源不再可用的时刻相距第十一时长：与Uu接口的传输冲突导致当前SL传输被取消、当前SL传输与其他RAT的SL传输冲突、当前载波传输与其他载波传输冲突；
根据所述终端的测量反馈触发；
当接收到ACK信息且有预留资源时触发；
在连续接收到预设个数的NACK信息之后触发。
可选的，所述第一时刻和所述第一时长的时间单位为以下任意一项：
slot、subframe、ms、mini-slot、frame。
可选的，所述评估模块81可用于：当进行资源选择重评估时，在资源选择窗内确定预设百分比的候选资源。
可选的，用于确定所述预设百分比的候选资源所使用的SL-RSRP门限值是基于以下任意一项确定的：
当前TB的优先级；
预设的TB优先级。
可选的，所述选择模块82可用于：
在满足以下至少一项的情况下，进行资源重选：
所述预设百分比的候选资源中不包括先前预留的资源，或包括部分先前预留的资源；
所述终端检测到其他终端预留的资源与所述预设百分比的候选资源存在冲突；
所述预设百分比的候选资源与前一次评估时得到的预设百分比的候选资源之间存在大于预设比例的不同资源。
可选的，所述选择模块82还用于：在所述终端触发了资源选择重评估的情况下，进行资源重选。
可选的，所述选择模块82还用于：在根据所述重评估结果确定出其他具有高优先级业务的终端抢占了所述终端预留的资源的情况下，进行资源重选；
其中，用于确定所述终端预留的资源被抢占的相关SL-RSRP门限值为以下任意一项：第一门限值、基于第一门限值和预设偏移量得到的值；
所述第一门限值是根据以下至少一项确定的：
第一RSRP门限值，所述第一RSRP门限值为所述终端在最近一次的资源选择评估或重评估中，用于得到预设百分比候选资源的SL-RSRP门限值；
第二RSRP门限值，所述第二RSRP门限值为所述终端在最近预设次的资源选择评估或重评估中，用于得到预设百分比候选资源的多个SL-RSRP门限值的平均值、最大值或最小值中的任意一者；
第三RSRP门限值，所述第三RSRP门限值为抢占资源的高优先级业务终端的用于确定预设百分比候选资源的SL-RSRP门限值。
可选的，当所述第一门限值是根据所述第一RSRP门限值、所述第二RSRP门限值和所述第三RSRP门限值中的至少两个RSRP门限值确定时，
所述第一门限值是所述终端依据预设优先级顺序，从所述至少两个RSRP门限值中选择的优先级高的一个。
可选的，所述预设优先级顺序包括：所述第一RSRP门限值的优先级高于，所述第二RSRP门限值和所述第三RSRP门限值的优先级。
本公开实施例的终端80，可以实现上述图1所示方法实施例中实现的各个过程，以及达到相同的有益效果，为避免重复，这里不再赘述。
本公开实施例还提供一种终端，包括处理器，存储器，存储在所述存储器上并可在所述处理器上运行的计算机程序，其中，所述计算机程序被所述处理器执行时实现上述应用于终端的资源选择方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
可选地，图9为实现本公开各个实施例的一种终端的硬件结构示意图，终端900包括但不限于：射频单元901、网络模块902、音频输出单元903、输入单元904、传感器905、显示单元906、用户输入单元907、接口单元908、存储器909、处理器910、以及电源911等部件。本领域技术人员可以理解，图9中示出的终端结构并不构成对终端的限定，终端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。在本公开实施例中，终端包括但不限于手机、平板电脑、笔记本电脑、掌上电脑、车载终端、可穿戴设备、以及计步器等。
其中，处理器910，用于基于触发条件触发资源选择重评估，并进行资源选择重评估，得到重评估结果；根据所述重评估结果，进行资源重选。
本公开实施例的终端900，可以实现上述图1所示方法实施例中实现的各个过程，以及达到相同的有益效果，为避免重复，这里不再赘述。
应理解的是，本公开实施例中，射频单元901可用于收发信息或通话过程中，信号的接收和发送，具体的，将来自基站的下行数据接收后，给处理器910处理；另外，将上行的数据发送给基站。通常，射频单元901包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。此外，射频单元901还可以通过无线通信系统与网络和其他设备通信。
终端通过网络模块902为用户提供了无线的宽带互联网访问，如帮助用户收发电子邮件、浏览网页和访问流式媒体等。
音频输出单元903可以将射频单元901或网络模块902接收的或者在存储器909中存储的音频数据转换成音频信号并且输出为声音。而且，音频输出单元903还可以提供与终端900执行的特定功能相关的音频输出(例如，呼叫信号接收声音、消息接收声音等等)。音频输出单元903包括扬声器、蜂鸣器以及受话器等。
输入单元904用于接收音频或视频信号。输入单元904可以包括图形处理器(Graphics Processing Unit，GPU)9041和麦克风9042，图形处理器9041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。处理后的图像帧可以显示在显示单元906上。经图形处理器9041处理后的图像帧可以存储在存储器909(或其它存储介质)中或者经由射频单元901或网络模块902进行发送。麦克风9042可以接收声音，并且能够将这样的声音处理为音频数据。处理后的音频数据可以在电话通话模式的情况下转换为可经由射频单元901发送到移动通信基站的格式输出。
终端900还包括至少一种传感器905，比如光传感器、运动传感器以及其他传感器。具体地，光传感器包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示面板9061的亮度，接近传感器可在终端900移动到耳边时，关闭显示面板9061和/或背光。作为运动传感器的一种，加速计传感器可检测各个方向上(一般为三轴)加速度的大小，静止时可检测出重力的大小及方向，可用于识别终端姿态(比如横竖屏切换、相关 游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等；传感器905还可以包括指纹传感器、压力传感器、虹膜传感器、分子传感器、陀螺仪、气压计、湿度计、温度计、红外线传感器等，在此不再赘述。
显示单元906用于显示由用户输入的信息或提供给用户的信息。显示单元906可包括显示面板9061，可以采用液晶显示器(Liquid Crystal Display，LCD)、有机发光二极管(Organic Light-Emitting Diode,OLED)等形式来配置显示面板9061。
用户输入单元907可用于接收输入的数字或字符信息，以及产生与终端的用户设置以及功能控制有关的键信号输入。具体地，用户输入单元907包括触控面板9071以及其他输入设备9072。触控面板9071，也称为触摸屏，可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板9071上或在触控面板9071附近的操作)。触控面板9071可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成触点坐标，再送给处理器910，接收处理器910发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板9071。除了触控面板9071，用户输入单元907还可以包括其他输入设备9072。具体地，其他输入设备9072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
进一步的，触控面板9071可覆盖在显示面板9061上，当触控面板9071检测到在其上或附近的触摸操作后，传送给处理器910以确定触摸事件的类型，随后处理器910根据触摸事件的类型在显示面板9061上提供相应的视觉输出。虽然在图9中，触控面板9071与显示面板9061是作为两个独立的部件来实现终端的输入和输出功能，但是在某些实施例中，可以将触控面板9071与显示面板9061集成而实现终端的输入和输出功能，具体此处不做限定。
接口单元908为外部装置与终端900连接的接口。例如，外部装置可以包括有线或无线头戴式耳机端口、外部电源(或电池充电器)端口、有线或无线数据端口、存储卡端口、用于连接具有识别模块的装置的端口、音频输入/输 出(I/O)端口、视频I/O端口、耳机端口等等。接口单元908可以用于接收来自外部装置的输入(例如，数据信息、电力等等)并且将接收到的输入传输到终端900内的一个或多个元件或者可以用于在终端900和外部装置之间传输数据。
存储器909可用于存储软件程序以及各种数据。存储器909可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等；存储数据区可存储根据手机的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器909可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
处理器910是终端的控制中心，利用各种接口和线路连接整个终端的各个部分，通过运行或执行存储在存储器909内的软件程序和/或模块，以及调用存储在存储器909内的数据，执行终端的各种功能和处理数据，从而对终端进行整体监控。处理器910可包括一个或多个处理单元；可选的，处理器910可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器910中。
终端900还可以包括给各个部件供电的电源911(比如电池)，可选的，电源911可以通过电源管理系统与处理器910逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。
另外，终端900还可包括一些未示出的功能模块，在此不再赘述。
本公开实施例还提供一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，该计算机程序被处理器执行时可实现上述应用于终端的资源选择方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，该计算机可读存储介质，例如为只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者 装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本公开各个实施例所述的方法。
上面结合附图对本公开的实施例进行了描述，但是本公开并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本公开的启示下，在不脱离本公开宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本公开的保护之内。

Claims (30)

  1. 一种资源选择方法，应用于终端，其特征在于，包括：
    基于触发条件触发资源选择重评估，并进行资源选择重评估，得到重评估结果；
    根据所述重评估结果，进行资源重选。
  2. 根据权利要求1所述的方法，其中，所述触发条件包括以下任意一项：
    持续性的或半静态的触发条件；
    非周期性的触发条件。
  3. 根据权利要求2所述的方法，其中，所述持续性的或半静态的触发条件包括以下至少一项：
    触发周期，所述触发周期为第一时间值；
    相邻两次的资源选择重评估的时间间隔小于或等于第二时间值；
    预设触发次数。
  4. 根据权利要求3所述的方法，其中，在所述触发条件包括预设触发次数的情况下，所述基于触发条件触发资源选择重评估的步骤，包括：
    在所述终端触发资源选择后，或者，在所述终端具有预留资源的情况下，触发所述预设触发次数的资源选择重评估。
  5. 根据权利要求3所述的方法，其中，所述第一时间值、所述第二时间值和所述预设触发次数中的任意一者，为以下任意一项：
    预定义的；
    网络设备或控制节点配置的；
    根据与以下至少一项的映射关系确定的：当前待传输业务的优先级、包时延预算PDB、业务类型、服务质量QoS和可靠性中的至少一者、旁链路参考信号接收功率SL-RSRP门限值、信道繁忙比CBR、信道占用比CR、混合自动重传请求HARQ反馈信息。
  6. 根据权利要求2所述的方法，其中，所述非周期性的触发条件包括以下至少一项：
    在资源预留信令的发送时刻之前的第一时刻触发资源选择重评估，所述 第一时刻与所述发送时刻相距第一时长；
    在每个预留资源的开始时刻之前的第二时刻触发资源选择重评估，所述第二时刻与所述开始时刻相距第二时长；
    在每个传输块TB的传输或重传时刻之前的第三时刻触发资源选择重评估，所述第三时刻与所述传输或重传时刻相距第三时长；
    在前一次评估或重评估的结束时刻之后的第四时刻触发资源选择重评估，所述第四时刻与所述结束时刻相距第四时长；
    在资源选择的触发时刻或重评估时刻之后的第五时刻触发资源选择重评估，所述第五时刻与所述触发时刻或所述重评估时刻相距第五时长；
    在检测到预留资源被抢占的时刻之后的第六时刻触发资源选择重评估，所述第六时刻与所述检测到预留资源被抢占的时刻相距第六时长；
    在接收到否定应答NACK信息且没有剩余的可用资源时之后的第七时刻触发资源选择重评估，所述第七时刻与所述NACK信息的接收时刻相距第七时长，所述可用资源为满足QoS要求所需的资源；
    在业务到达，但PDB或资源选择窗内没有可用的半静态预留资源时之后的第八时刻触发资源选择重评估，所述第八时刻与所述业务的到达时刻相距第八时长；
    在TB的传输时刻之后的第九时刻触发资源选择重评估，所述TB的重传次数超过最大重传次数，所述第九时刻与所述传输时刻相距第九时长；
    在接收到无线链路控制RLC触发重传信息之后的第十时刻触发资源选择重评估，所述第十时刻与所述RLC触发重传信息的接收时刻相距第十时长；
    在基于以下任意一项确定预留资源不再可用时之后的第十一时刻触发资源选择重评估，所述第十一时刻与确定所述预留资源不再可用的时刻相距第十一时长：与Uu接口的传输冲突导致当前旁链路SL传输被取消、当前SL传输与其他无线接入技术RAT的SL传输冲突、当前载波传输与其他载波传输冲突；
    根据所述终端的测量反馈触发；
    当接收到确认应答ACK信息且有预留资源时触发；
    在连续接收到预设个数的NACK信息之后触发。
  7. 根据权利要求6所述的方法，其中，所述第一时刻和所述第一时长的时间单位为以下任意一项：
    时隙slot、子帧subframe、毫秒ms、小时隙mini-slot、帧frame。
  8. 根据权利要求1所述的方法，其中，所述进行资源选择重评估，得到重评估结果的步骤，包括：
    当进行资源选择重评估时，在资源选择窗内确定预设百分比的候选资源。
  9. 根据权利要求8所述的方法，其中，用于确定所述预设百分比的候选资源所使用的SL-RSRP门限值是基于以下任意一项确定的：
    当前TB的优先级；
    预设的TB优先级。
  10. 根据权利要求8所述的方法，其中，所述根据所述重评估结果，进行资源重选的步骤，包括：
    在满足以下至少一项的情况下，进行资源重选：
    所述预设百分比的候选资源中不包括先前预留的资源，或包括部分先前预留的资源；
    所述终端检测到其他终端预留的资源与所述预设百分比的候选资源存在冲突；
    所述预设百分比的候选资源与前一次评估时得到的预设百分比的候选资源之间存在大于预设比例的不同资源。
  11. 根据权利要求1所述的方法，还包括：
    在所述终端触发了资源选择重评估的情况下，进行资源重选。
  12. 根据权利要求1所述的方法，其中，所述根据所述重评估结果，进行资源重选，包括：
    在根据所述重评估结果确定出其他具有高优先级业务的终端抢占了所述终端预留的资源的情况下，进行资源重选；
    其中，用于确定所述终端预留的资源被抢占的相关SL-RSRP门限值为以下任意一项：第一门限值、基于第一门限值和预设偏移量得到的值；
    所述第一门限值是根据以下至少一项确定的：
    第一RSRP门限值，所述第一RSRP门限值为所述终端在最近一次的资 源选择评估或重评估中，用于得到预设百分比候选资源的SL-RSRP门限值；
    第二RSRP门限值，所述第二RSRP门限值为所述终端在最近预设次的资源选择评估或重评估中，用于得到预设百分比候选资源的多个SL-RSRP门限值的平均值、最大值或最小值中的任意一者；
    第三RSRP门限值，所述第三RSRP门限值为抢占资源的高优先级业务终端的用于确定预设百分比候选资源的SL-RSRP门限值。
  13. 根据权利要求12所述的方法，其中，当所述第一门限值是根据所述第一RSRP门限值、所述第二RSRP门限值和所述第三RSRP门限值中的至少两个RSRP门限值确定时，
    所述第一门限值是所述终端依据预设优先级顺序，从所述至少两个RSRP门限值中选择的优先级高的一个。
  14. 根据权利要求13所述的方法，其中，
    所述预设优先级顺序包括：所述第一RSRP门限值的优先级高于，所述第二RSRP门限值和所述第三RSRP门限值的优先级。
  15. 一种终端，其特征在于，包括：
    评估模块，用于基于触发条件触发资源选择重评估，并进行资源选择重评估，得到重评估结果；
    选择模块，用于根据所述重评估结果，进行资源重选。
  16. 根据权利要求15所述的终端，其中，所述触发条件包括以下任意一项：
    持续性的或半静态的触发条件；
    非周期性的触发条件。
  17. 根据权利要求16所述的终端，其中，所述持续性的或半静态的触发条件包括以下至少一项：
    触发周期，所述触发周期为第一时间值；
    相邻两次的资源选择重评估的时间间隔小于或等于第二时间值；
    预设触发次数。
  18. 根据权利要求17所述的终端，其中，在所述触发条件包括预设触发次数的情况下，所述评估模块可以用于：在所述终端触发资源选择后，或者， 在所述终端具有预留资源的情况下，触发所述预设触发次数的资源选择重评估。
  19. 根据权利要求17所述的终端，其中，所述第一时间值、所述第二时间值和所述预设触发次数中的任意一者，为以下任意一项：
    预定义的；
    网络设备或控制节点配置的；
    根据与以下至少一项的映射关系确定的：当前待传输业务的优先级、PDB、业务类型、QoS和可靠性中的至少一者、SL-RSRP门限值、CBR、CR、HARQ反馈信息等。
  20. 根据权利要求16所述的终端，其中，所述非周期性的触发条件包括以下至少一项：
    在资源预留信令的发送时刻之前的第一时刻触发资源选择重评估，所述第一时刻与所述发送时刻相距第一时长；
    在每个预留资源的开始时刻之前的第二时刻触发资源选择重评估，所述第二时刻与所述开始时刻相距第二时长；
    在每个TB的传输或重传时刻之前的第三时刻触发资源选择重评估，所述第三时刻与所述传输或重传时刻相距第三时长；
    在前一次评估或重评估的结束时刻之后的第四时刻触发资源选择重评估，所述第四时刻与所述结束时刻相距第四时长；
    在资源选择的触发时刻或重评估时刻之后的第五时刻触发资源选择重评估，所述第五时刻与所述触发时刻或所述重评估时刻相距第五时长；
    在检测到预留资源被抢占的时刻之后的第六时刻触发资源选择重评估，所述第六时刻与所述检测到预留资源被抢占的时刻相距第六时长；
    在接收到NACK信息且没有剩余的可用资源时之后的第七时刻触发资源选择重评估，所述第七时刻与所述NACK信息的接收时刻相距第七时长，所述可用资源为满足QoS要求所需的资源；
    在业务到达，但PDB或资源选择窗内没有可用的半静态预留资源时之后的第八时刻触发资源选择重评估，所述第八时刻与所述业务的到达时刻相距第八时长；
    在TB的传输时刻之后的第九时刻触发资源选择重评估，所述TB的重传次数超过最大重传次数，所述第九时刻与所述传输时刻相距第九时长；
    在接收到RLC触发重传信息之后的第十时刻触发资源选择重评估，所述第十时刻与所述RLC触发重传信息的接收时刻相距第十时长；
    在基于以下任意一项确定预留资源不再可用时之后的第十一时刻触发资源选择重评估，所述第十一时刻与确定所述预留资源不再可用的时刻相距第十一时长：与Uu接口的传输冲突导致当前SL传输被取消、当前SL传输与其他RAT的SL传输冲突、当前载波传输与其他载波传输冲突；
    根据所述终端的测量反馈触发；
    当接收到ACK信息且有预留资源时触发；
    在连续接收到预设个数的NACK信息之后触发。
  21. 根据权利要求20所述的终端，其中，所述第一时刻和所述第一时长的时间单位为以下任意一项：
    slot、subframe、ms、mini-slot、frame。
  22. 根据权利要求15所述的终端，其中，所述评估模块用于：当进行资源选择重评估时，在资源选择窗内确定预设百分比的候选资源。
  23. 根据权利要求22所述的终端，其中，用于确定所述预设百分比的候选资源所使用的SL-RSRP门限值是基于以下任意一项确定的：
    当前TB的优先级；
    预设的TB优先级。
  24. 根据权利要求22所述的终端，其中，所述选择模块用于：
    在满足以下至少一项的情况下，进行资源重选：
    所述预设百分比的候选资源中不包括先前预留的资源，或包括部分先前预留的资源；
    所述终端检测到其他终端预留的资源与所述预设百分比的候选资源存在冲突；
    所述预设百分比的候选资源与前一次评估时得到的预设百分比的候选资源之间存在大于预设比例的不同资源。
  25. 根据权利要求15所述的终端，其中，所述选择模块还用于：在所述 终端触发了资源选择重评估的情况下，进行资源重选。
  26. 根据权利要求15所述的终端，其中，所述选择模块还用于：在根据所述重评估结果确定出其他具有高优先级业务的终端抢占了所述终端预留的资源的情况下，进行资源重选；
    其中，用于确定所述终端预留的资源被抢占的相关SL-RSRP门限值为以下任意一项：第一门限值、基于第一门限值和预设偏移量得到的值；
    所述第一门限值是根据以下至少一项确定的：
    第一RSRP门限值，所述第一RSRP门限值为所述终端在最近一次的资源选择评估或重评估中，用于得到预设百分比候选资源的SL-RSRP门限值；
    第二RSRP门限值，所述第二RSRP门限值为所述终端在最近预设次的资源选择评估或重评估中，用于得到预设百分比候选资源的多个SL-RSRP门限值的平均值、最大值或最小值中的任意一者；
    第三RSRP门限值，所述第三RSRP门限值为抢占资源的高优先级业务终端的用于确定预设百分比候选资源的SL-RSRP门限值。
  27. 根据权利要求26所述的终端，其中，当所述第一门限值是根据所述第一RSRP门限值、所述第二RSRP门限值和所述第三RSRP门限值中的至少两个RSRP门限值确定时，
    所述第一门限值是所述终端依据预设优先级顺序，从所述至少两个RSRP门限值中选择的优先级高的一个。
  28. 根据权利要求27所述的终端，其中，所述预设优先级顺序包括：所述第一RSRP门限值的优先级高于，所述第二RSRP门限值和所述第三RSRP门限值的优先级。
  29. 一种终端，包括存储器，处理器，存储在所述存储器上并可在所述处理器上运行的计算机程序，其特征在于，所述计算机程序被所述处理器执行时实现如权利要求1至14中任一项所述的资源选择方法的步骤。
  30. 一种计算机可读存储介质，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执行时实现如权利要求1至14中任一项所述的资源选择方法的步骤。
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KR20220088935A (ko) 2022-06-28
JP7358637B2 (ja) 2023-10-10
BR112022007234A2 (pt) 2022-07-05
EP4064772A4 (en) 2023-01-04
US20220272709A1 (en) 2022-08-25
JP2023501112A (ja) 2023-01-18

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