WO2022236683A1 - Procédé et appareil de sélection de ressources de transmission, dispositif et support de stockage - Google Patents

Procédé et appareil de sélection de ressources de transmission, dispositif et support de stockage Download PDF

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Publication number
WO2022236683A1
WO2022236683A1 PCT/CN2021/093070 CN2021093070W WO2022236683A1 WO 2022236683 A1 WO2022236683 A1 WO 2022236683A1 CN 2021093070 W CN2021093070 W CN 2021093070W WO 2022236683 A1 WO2022236683 A1 WO 2022236683A1
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Prior art keywords
resource
time units
time
time unit
resource selection
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PCT/CN2021/093070
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English (en)
Chinese (zh)
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赵群
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北京小米移动软件有限公司
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Priority to EP21941259.0A priority Critical patent/EP4340509A1/fr
Priority to CN202180001519.XA priority patent/CN113455078B/zh
Publication of WO2022236683A1 publication Critical patent/WO2022236683A1/fr

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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
    • H04W72/50—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

Definitions

  • the present application relates to the field of mobile communication, and in particular to a method, device, equipment and storage medium for selecting transmission resources.
  • the resource selection of the sidelink in R16 supports the pre-emption (preemption) and re-evaluation (re-evaluation) mechanisms.
  • the terminal device Before performing sidelink transmission on the selected transmission resource, the terminal device needs to judge whether the selected transmission resource is still suitable for transmission according to the monitoring result, and if not, it needs to reselect the transmission resource.
  • the selected transmission resources are not reserved by other side transmissions, it is called re-evaluation; when the selected transmission resources have been reserved by other side transmissions, it is called pre-emption.
  • the terminal device needs to reselect the transmission resources.
  • Embodiments of the present application provide a transmission resource selection method, device, device, and storage medium, which can perform re-evaluation and/or preemption of transmission resources based on partial monitoring. Described technical scheme is as follows:
  • a method for selecting transmission resources is provided, which is applied to a terminal for V2X transmission, and the method includes:
  • the target transmission resource is processed using a partial intercept based re-evaluation and/or preemption procedure.
  • a device for selecting a transmission resource includes:
  • a selection module configured to determine target transmission resources during the resource selection process
  • a processing module configured to process the target transmission resource by using a re-evaluation and/or preemption process based on partial monitoring.
  • a terminal device includes: a processor and a transceiver connected to the processor; wherein,
  • the processor is configured to determine a target transmission resource in a resource selection process; and process the target transmission resource by using a re-evaluation and/or preemption process based on partial monitoring.
  • a computer-readable storage medium wherein executable instructions are stored in the readable storage medium, and the executable instructions are loaded and executed by a processor to realize the transmission described in the above aspect Resource selection method.
  • a chip is provided, the chip includes a programmable logic circuit and/or program instructions, and when the chip is run on a computer device, it is used to realize the transmission resource described in the above aspect selection method.
  • a computer program product When running on a processor of a computer device, the computer program product causes the computer device to execute the transmission resource selection method described in the above aspect.
  • the re-evaluation and preemption mechanism is implemented in a partial monitoring manner, thereby reducing the length of time the terminal device needs to monitor and saving Energy for end equipment.
  • FIG. 1 is a schematic diagram of a system architecture provided by an exemplary embodiment of the present application
  • FIG. 2 is a flowchart of a method for selecting transmission resources provided by an exemplary embodiment of the present application
  • FIG. 3 is a schematic diagram of a method for selecting transmission resources provided by an exemplary embodiment of the present application
  • FIG. 4 is a schematic diagram of a method for selecting transmission resources provided by an exemplary embodiment of the present application.
  • FIG. 5 is a schematic diagram of a method for selecting transmission resources provided by an exemplary embodiment of the present application.
  • FIG. 6 is a flowchart of a method for selecting transmission resources provided by an exemplary embodiment of the present application.
  • FIG. 7 is a schematic diagram of a method for selecting transmission resources provided by an exemplary embodiment of the present application.
  • FIG. 8 is a schematic diagram of a method for selecting transmission resources provided by an exemplary embodiment of the present application.
  • FIG. 9 is a schematic diagram of a method for selecting transmission resources provided by an exemplary embodiment of the present application.
  • FIG. 10 is a schematic diagram of a method for selecting transmission resources provided by an exemplary embodiment of the present application.
  • FIG. 11 is a schematic diagram of a method for selecting transmission resources provided by an exemplary embodiment of the present application.
  • Fig. 12 is a schematic diagram of a method for selecting transmission resources provided by an exemplary embodiment of the present application.
  • Fig. 13 is a structural block diagram of an apparatus for selecting transmission resources provided by an exemplary embodiment of the present application.
  • Fig. 14 is a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application.
  • first, second, third, etc. may be used in the present disclosure to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present disclosure, first information may also be called second information, and similarly, second information may also be called first information.
  • first information may also be called second information, and similarly, second information may also be called first information.
  • word “if” as used herein may be interpreted as “at” or "when” or "in response to a determination”.
  • V2X Vehicle to everything
  • V2X communication includes Vehicle to Vehicle (V2V) communication, Vehicle to Infrastructure (V2I) communication and Vehicle to People (V2P) communication.
  • V2X applications will improve driving safety, reduce congestion and vehicle energy consumption, and improve traffic efficiency.
  • the sidelink has two transmission modes.
  • the first transmission mode is: the network device configures transmission resources for the terminal device, and the terminal device performs sidelink data transmission on the configured transmission resources.
  • the second transmission mode is: the network device allocates a resource pool to the terminal device, and the terminal device selects one or more transmission resources from the resource pool for data transmission on the sidelink.
  • the terminal device may select transmission resources from the resource pool by listening, or select transmission resources from the resource pool by random selection.
  • the terminal device In the second transmission mode, the terminal device needs to keep channel monitoring for resource selection.
  • resource selection When resource selection is triggered, the terminal device determines the resource selection window and candidate resource set, removes candidate resources with strong interference expected in the resource selection window according to the channel monitoring results, and randomly selects the remaining candidate resource sets.
  • an effective method is to reduce the time for the terminal device to monitor the channel, and the terminal device only performs channel monitoring for part of the time.
  • LTE Long Term Evolution, long-term evolution
  • V2X in R14 Release 14
  • the current sidelink resource selection in R16 supports pre-emption (preemption) and re-evaluation (re-evaluation) mechanisms, which also rely on channel monitoring.
  • the terminal device Before performing direct connection transmission on the selected transmission resource, the terminal device needs to judge whether the selected transmission resource is still suitable for transmission according to the monitoring result, and if not, it needs to reselect the resource.
  • the selected transmission resources are not reserved by other transmissions, it is called re-evaluation; when the selected time-frequency resources have been reserved by other transmissions, it is called pre-emption.
  • the channel monitoring results if there are other direct transmissions occupying the selected transmission resources and satisfy the configured priority and S-RSRP measurement conditions, the user needs to reselect resources and give up the transmission on the originally selected transmission resources.
  • the terminal device For resource selection based on partial monitoring in LTE V2x, the terminal device only selects part of the time units in the resource selection window. The terminal device only needs to monitor the selected part of the time units, and does not need to monitor every time unit. The terminal device is only allowed to determine the candidate resource set within this part of the time unit, that is, judge whether the transmission resource is occupied by other side transmissions according to the sensing result, and if so, exclude the time-frequency resource from the candidate resource set.
  • Resource re-evaluation and preemption are features introduced in R16.
  • the terminal device When the terminal device performs resource re-evaluation (re-evaluation) and pre-emption (pre-emption) judgment, it needs to re-judge whether the transmission resource to be sent still belongs to the candidate transmission resource resource.
  • the concept of partial monitoring is introduced for resource re-evaluation and preemption to save energy.
  • Fig. 1 shows a block diagram of a communication system supporting sidelink transmission provided by an exemplary embodiment of the present application.
  • the communication system may be a schematic diagram of a non-roaming 5G system architecture (Non-roaming 5G system architecture), and the system architecture may be applied to a vehicle networking (Vehicle to everything, V2X) service using D2D (Device to Device, device to device) technology.
  • V2X Vehicle to everything
  • the system architecture includes a data network (Data Network, DN), in which a V2X application server (Application Server) required by the V2X service is set.
  • the system architecture also includes the 5G core network.
  • the network functions of the 5G core network include: unified data management (Unified Data Management, UDM), policy control function (Policy Control Function, PCF), network exposure function (Network Exposure Function, NEF), Application function (Application Function, AF), unified data storage (Unified Data Repository, UDR), access and mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF) and user plane Function (User Plane Function, UPF).
  • the system architecture also includes: a radio access network (New Generation-Radio Access Network, NG-RAN) and 4 terminals (namely, terminal 1 to terminal 4) shown as examples.
  • NG-RAN New Generation-Radio Access Network
  • each terminal is configured with a V2X application (Application) or an application supporting SL transmission.
  • V2X application Application
  • gNBs base stations
  • the data network and the user plane function in the 5G core network are connected through the N6 reference point (Reference Point), and the V2X application server and the V2X application in the terminal are connected through the V1 reference point; the wireless access network and the 5G core network
  • the AMF function and UPF function are connected, and the wireless access network is connected to Terminal 1 and Terminal 5 respectively through the Uu reference point; multiple terminals are connected to each other through the PC5 reference point, and multiple V2X applications are connected through the V5 reference point .
  • the aforementioned reference points may also be referred to as "interfaces".
  • the "5G NR system" in the embodiments of the present disclosure may also be called a 5G system or an NR system, but those skilled in the art can understand its meaning.
  • the technical solution described in the embodiments of the present disclosure can be applied to the 5G NR system, and can also be applied to the subsequent evolution system of the 5G NR system.
  • the technical solutions described in the embodiments of the present disclosure can be applied to V2x applications, and can also be applied to other applications using sidelink transmission, such as public safety (public safety) and commercial applications.
  • FIG. 2 shows a flowchart of a method for selecting transmission resources provided by an embodiment of the present application, and the method can be applied to the system architecture shown in FIG. 1 .
  • the method includes the following steps.
  • Step 220 the terminal device determines the target transmission resource in the resource selection process.
  • the terminal device can obtain the first PSCCH (Physical Sidelink Control Channel) sent by other terminal devices by listening to the PSCCH (Physical Sidelink Control Channel) sent by other terminal devices.
  • PSCCH Physical Sidelink Control Channel
  • Side-travel control information so as to know the resources reserved by other terminal devices.
  • a terminal device selects resources, it will exclude resources reserved by other terminal devices, thereby avoiding resource collisions.
  • the data packet of the terminal device arrives at time slot n, which triggers resource selection.
  • the resource selection window (the second resource selection window 301 ) starts at time n+T1 and ends at time n+T2.
  • 0 ⁇ T1 ⁇ T proc,1 , T proc,1 is the time for the terminal device to select resources and prepare data, when the subcarrier spacing is 15kHz, 30kHz, 60kHz, 120kHz, T proc,1 corresponds to 3,5 , 9, and 17 time slots; T2 min ⁇ T2 ⁇ packet delay budget (Packet Delay Budget, PDB).
  • the terminal device determines T2 min from the value set according to the priority of the data to be sent.
  • T2 data packet delay budget, so as to ensure that the terminal device can send the data packet before the maximum delay of the data packet arrives.
  • the terminal device performs resource monitoring during the resource monitoring window (the second resource monitoring window 302 ) at time n-T0 to nT proc, 0 , and the value of T0 is 100 or 1100 milliseconds.
  • T proc, 0 is the time for the terminal device to decode the control information.
  • T proc,0 is 1, 1, 2, and 4 time slots, respectively.
  • the resource selection process of the target transmission resource includes two steps: Step 1, the terminal device determines a candidate resource set; Step 2, the terminal device selects a target transmission resource from the candidate resource set.
  • Step1 the terminal device determines a candidate resource set.
  • the terminal device uses all available resources in the second resource selection window as resource set A.
  • the terminal device If the terminal device sends data in some time slots in the second resource listening window, the terminal device will not listen on these time slots due to half-duplex restrictions, so the terminal device needs to send data corresponding to these time slots.
  • the resources on the time slots in the second resource selection window are removed from the resource set A, so as to avoid resource conflicts with other terminal devices. Specifically, when determining the time slots in the second resource selection window corresponding to these time slots, the terminal device determines the time slots corresponding to these time slots in the selection window by using the value set of the resource reservation period field in the resource pool configuration used. slot, and exclude all resources on the corresponding slot from resource set A.
  • the terminal device detects the PSCCH in the second resource listening window, measure the RSRP (Reference Signal Received Power, reference signal received power) of the PSCCH or the PSSCH (Physical Sidelink Shared Channel, physical direct connection shared channel) scheduled by the PSCCH ), if the measured RSRP is greater than the SL-RSRP threshold, and according to the resource reservation information in the sideline control information transmitted in the PSCCH, it is determined that the reserved resources are within the second resource selection window, then from the resource set A Excludes its reserved resources. If the remaining resources in resource set A are less than X% of all resources before resource exclusion in resource set A, raise the SL-RSRP threshold by 3db and execute Step 1 again.
  • RSRP Reference Signal Received Power, reference signal received power
  • PSSCH Physical Sidelink Shared Channel, physical direct connection shared channel
  • the above possible values of X are 20, 35, 50, and the terminal device determines the parameter X from the value set according to the priority of the data to be sent.
  • the above SL-RSRP threshold is related to the priority carried in the PSCCH detected by the terminal device and the priority of the data to be sent by the terminal device.
  • the terminal device uses the remaining resources in resource set A after resource exclusion as a candidate resource set.
  • Step2 the terminal device selects a target transmission resource from the candidate resource set.
  • the terminal device randomly selects several resources from the candidate resource set as the resources used by the terminal device for initial transmission and retransmission.
  • Step2 resource selection needs to meet some constraints in the time domain, mainly including the following two points:
  • the terminal device should enable the selected resource to be indicated by the previous resource of the resource, that is, the time domain interval between the two is less than 32 time slots.
  • the exceptions above include that the terminal device cannot select a resource that satisfies the time domain restriction from the candidate resource set after resource exclusion, and the time domain restriction is broken due to resource preemption or congestion control and other reasons after resource selection is completed.
  • the terminal device should guarantee any two selected time-frequency resources. If the previous transmission resource requires HARQ (Hybrid Automatic Repeat reQuest, hybrid automatic repeat request) feedback, the two are separated by at least Z in the time domain.
  • the duration Z includes the time for the terminal device to wait for the HARQ feedback from the receiving end and the time for preparing to retransmit data.
  • some retransmission resources may be abandoned or HARQ feedback may be deactivated for some transmission resources.
  • the target transmission resource determined in the resource selection process in step 220 may be:
  • a set of candidate resources selected by the terminal device from the second resource selection window before performing resource removal for example, the target transmission resource includes Y candidate time units.
  • the terminal device selects a candidate resource set from the second resource selection window, conducts interception based on the candidate resource set by means of partial monitoring to obtain an interception result, removes resources from the candidate resource set based on the interception result, and removes resources from the candidate resource set
  • the final selected transmission resource is selected from the resource set.
  • the terminal device Before performing resource removal, the terminal device selects candidate transmission resources from the second resource selection window, and performs periodic resource reservation based on the candidate resource set (for example, the target transmission resource includes: time for Y candidates units, and Y*k reserved time units obtained by performing periodic resource reservation based on Y candidate time units).
  • the terminal device selects candidate transmission resources from the second resource selection window, performs periodic resource reservation based on the candidate transmission resources to obtain reserved transmission resources, removes resources from the candidate resources based on the interception results, and removes resources from the candidate resources after resource removal Select the final transmission resource.
  • the target transmission resources include the above-mentioned candidate transmission resources, and a candidate resource set composed of reserved transmission resources of the candidate transmission resources.
  • a set of available resources obtained by the terminal device after resource removal The terminal device removes resources from the transmission resources in the second resource selection window based on the listening result, obtains a set of available resources after resource removal, and selects the final selected transmission resource from the set of available resources.
  • the terminal device removes resources from the transmission resources in the second resource selection window based on the listening result, obtains an available resource set after resource removal, performs periodic resource reservation based on the available resource set to obtain reserved transmission resources, and obtains reserved transmission resources from the available resource set The final selected transport resource is selected.
  • a set of selected transmission resources finally selected by the terminal device after the resource selection process (for example, the target transmission resource includes B time units).
  • the terminal device performs resource removal according to the interception result, and selects the final selected transmission resource set from the remaining transmission resources after the resource removal.
  • the selected transmission resource finally selected by the terminal device through the resource selection process, and the selected transmission resource set obtained by performing periodic resource reservation based on the selected transmission resource (for example, the target transmission resource includes: B time units, and B*k reserved time units obtained by performing periodic resource reservation based on B time units).
  • the terminal device performs resource removal according to the interception result, selects the final selected transmission resource from the remaining transmission resources after resource removal, performs periodic resource reservation based on the selected transmission resource, and finally obtains the selected transmission resource, A set of selected transmission resources composed of reserved transmission resources of the selected transmission resources.
  • step 240 the terminal device processes the target transmission resource by using a re-evaluation and/or preemption process based on partial monitoring.
  • NR-V2X supports the Re-evaluation mechanism. After the terminal device completes resource selection, resources that have been selected but not indicated by sending sideline control information may still be reserved by other terminal devices, resulting in resource collisions. Aiming at this problem, a re-evaluation mechanism is proposed, that is, after completing resource selection, the terminal device still continues to listen to the side traffic control information, and re-evaluates the selected but not indicated resources at least once.
  • resource w, resource x, resource y, resource z, resource u, and resource v are target transmission resources (set of selected transmission resources) selected by the terminal device in time slot n, and resource x is located in time slot m.
  • the terminal device executes the above at least once in time slot m-T3 Step 1 performs re-evaluation, that is, determines the first resource selection window 303 and the first resource listening window 304, and performs resource exclusion on the resources in the first resource selection window 303 to obtain a candidate resource set.
  • the terminal device performs the above Step 2 to reselect time-frequency resources in resource y and resource z that are not in the candidate resource set, and can also reselect any time-frequency resources that have been selected but have not been controlled by the sending side
  • the resources indicated by the information for example, any number of resources among resource y, resource z and resource v.
  • the above T3 is equal to T proc,1 .
  • the dotted arrow indicates that the sidelink control information indication is about to be sent, and the realization arrow indicates that the sidelink control information indication has already been sent.
  • NR-V2X supports the resource preemption (Pre-emption) mechanism.
  • Pre-emption the resource preemption mechanism.
  • the terminal device After the resource selection is completed, the terminal device still continues to listen to the sidelink control information. If the time-frequency resource that has been selected and indicated by sending the sideline control information meets the following three conditions, it means that the selected resource is used by other terminal devices. Preemption, the terminal device triggers resource reselection for the selected resource:
  • the RSRP of the PSCCH corresponding to the sidelink control information detected by the terminal device or the RSRP of the PSSCH scheduled by the PSCCH is greater than the SL-RSRP threshold.
  • Condition 3 the priority carried in the intercepted sidewalk control information is higher than the priority of the data to be sent by the terminal device, and other configuration conditions are met.
  • the associated priority prio RX satisfies one of the following conditions (the associated priority satisfies one of the following conditions):
  • SL-PreemptionEnable is provided and is equal to'enabled'and prio TX >prio RX (the parameter SL-PreemptionEnable is configured and enabled, and the sending priority prio TX is higher than the receiving priority prio RX );
  • SL-PreemptionEnable is provided and is not equal to'enabled', and prio RX ⁇ prio pre and prio TX >prio RX (the parameter SL-PreemptionEnable is configured and is in the disabled state, and the receiving priority prio RX is less than the configured or pre The configured priority is prio pre , and the sending priority prio TX is higher than the receiving priority prio RX ).
  • resources w, x, y, z, and v are time-frequency resources selected by the terminal device in time slot n, and resource x is located in time slot m.
  • the terminal device performs the above Step 1 at least once in time slot m-T3, That is, the first resource selection window 303 and the first resource listening window 304 are determined, and resources in the first resource selection window 303 are excluded to determine a candidate resource set.
  • resource x or y is not in the candidate resource set (satisfy the above condition 1 and condition 2), it is further judged whether resource x is caused by an indication of sideline control information with high priority (higher priority than the data to be sent by the terminal device) Or y is not in the candidate resource set (satisfies the above condition 3), if yes, the terminal device executes step 2 to reselect the time-frequency resources satisfying the above three conditions among resource x and resource y. In addition, when resource reselection is triggered, the terminal device may reselect any resource that has been selected but not indicated by sending sideline control information, such as any number of resources z and v.
  • the aforementioned T3 is equal to T proc,1 .
  • Step 1 when re-evaluating the resources in the first resource selection window corresponding to time slot m, the method of Step 1 needs to be adopted according to the Intercept sideline control information and corresponding RSRP measurement in a resource listening window Remove resources occupied by other terminal devices from the first resource selection window to obtain a candidate resource set, and then determine whether the selected resource is included in the candidate resource set , if it is not included, it means that the selected resource is preempted, triggering resource reselection; if it is included, it means that the selected resource is not preempted.
  • This method needs to listen to most of the time-frequency resources in the first resource listening window (except the time slot for the terminal device to send data), and the terminal device needs to listen for a long time, which consumes a lot of energy.
  • partial monitoring is used, that is, some candidate time units are selected in the first resource selection window, and then selected in the first resource listening window Partial interception is performed on the time-frequency resources corresponding to the candidate time units, and it is determined whether the candidate time units are occupied by other terminal devices according to the interception results.
  • the terminal device does not need to listen to all the time-frequency resources in the first resource listening window.
  • the listening time of the terminal device is reduced, and the capacity of the terminal device is reduced. consumption.
  • the timeslot and time unit mentioned in the embodiments of the present application may refer to physical time, such as 1us (microsecond), 1ms (millisecond), 1symbol (symbol), 1slot (time slot), 1subframe (subframe Frame), 1frame (frame); can also refer to logical time, for example, define the set of all time domain resources that can be used as side communication as a logical time set, or define all time domain resources in the Tx (Transmit, transmit) resource set Defined as a collection of logical times; and maps physical time into a collection of logical times.
  • the method provided in this embodiment implements the re-evaluation and preemption mechanism in the process of using the re-evaluation and preemption mechanism to monitor and determine the target transmission resource after the target transmission resource is determined. , thereby reducing the length of time that the terminal equipment needs to monitor, and saving the energy of the terminal equipment.
  • the terminal device when it re-evaluates and/or preempts the time-frequency resources in the time unit u based on partial monitoring, it selects a candidate time unit from the re-evaluated and/or preempted first resource selection window , re-evaluate and/or preempt candidate time units based on partial listening.
  • FIG. 6 shows a flow chart of a method for selecting transmission resources provided by an embodiment of the present application, and the method can be applied to the system architecture shown in FIG. 1 .
  • the method includes the following steps.
  • Step 220 the terminal device determines the target transmission resource in the resource selection process.
  • the target transmission resources determined by the terminal device in the resource selection phase include the transmission resources within the time unit u.
  • the terminal device determines the target transmission resource in the time unit n, and the target transmission resource includes the transmission resource in the time unit u.
  • the time unit u can be a time unit, such as the time unit m where the resource x of the pre-emption check (preemption check) is located in Figure 4; or the time unit u can be multiple time units, as shown in Figure 4
  • Step 241 the terminal device performs a re-evaluation and/or preemption process on the resources in the target transmission resource, and selects candidate time units from the first resource selection window, and the candidate time units include at least time unit u; where time unit u is the time unit that needs to be executed The time unit in which the resource of the re-evaluation and/or preemption process is located;
  • the first resource selection window is a resource selection window corresponding to a re-evaluation and/or preemption process based on partial monitoring.
  • the time unit u includes at least two time units
  • the candidate time units selected in the re-evaluation and/or preemption process based on partial monitoring of different resources corresponding to at least two time units are different;
  • the candidate time units selected in the partial monitoring-based re-evaluation and/or preemption process of different resources corresponding to at least two time units are the same.
  • the re-evaluation and/or preemption process based on partial monitoring of at least two time units are carried out separately;
  • the re-evaluation and/or preemption process based on partial monitoring of at least two time units is performed simultaneously (or called "merging"), or is performed separately.
  • the terminal device performs the re-evaluation and/or preemption process at the time unit p, and the time unit set of all resources that need to perform the re-evaluation and/or preemption process at the time unit p is W, when W includes multiple In one time unit,
  • reset time unit u time unit of resource y
  • the time unit u includes W time units, and W is a positive integer; the terminal device selects a candidate time unit for the target transmission resource corresponding to each time unit in the W time units, and performs re-evaluation based on partial monitoring and /or preemption process, w is a positive integer not greater than W.
  • resource x needs to perform preemption evaluation
  • resource y, and resource z need to perform re-evaluation
  • terminal devices perform preemption evaluation on resource x respectively
  • resource y and resource z perform re-evaluation
  • candidate time units selected in preemption evaluation for resource x differ from candidate time units selected in re-evaluation for resources y and resource z
  • candidate time units selected in re-evaluation for resource y and resource z The time units are exactly the same.
  • time unit u includes all time units corresponding to x, y, and z.
  • resource x resource The candidate time units selected in re-evaluation and/or preemption for resource z are exactly the same.
  • the time unit u includes W time units, and W is a positive integer; based on the partial interception results corresponding to the W time units among the candidate time units, the terminal device re-evaluates W time units based on partial interception and/or or preemptive process.
  • the time unit u may be understood as a time unit set u, and the time unit set u includes at least one time unit.
  • the terminal device can use the re-evaluation and/or preemption process based on partial monitoring at least in multiple situations.
  • Case 1 In the case of using the resource selection process based on partial monitoring, the terminal device uses the re-evaluation and/or preemption process based on partial monitoring to process the target transmission resource.
  • the method of partial monitoring is also used in the process of reevaluating and/or preempting the selected resources or reserved resources.
  • the terminal when it adopts a resource selection process based on full monitoring in the resource selection phase, it may also use a partial monitoring method during the process of reevaluating and/or preempting selected resources or reserved resources.
  • the terminal device can trigger the re-evaluation and/or preemption process based on partial monitoring based on the following two methods:
  • the terminal device uses the re-evaluation and/or preemption process based on partial monitoring to process the target transmission resource; wherein, the configuration information includes: the first At least one of configuration information, second configuration information sent by a higher layer, and pre-configuration information.
  • the terminal device uses a re-evaluation and/or preemption process based on partial monitoring to process the target transmission resource.
  • the terminal device judges whether to use the re-evaluation and/or preemption process based on partial listening based on base station configuration, high-layer configuration or pre-configuration information.
  • the terminal device judges whether to use the re-evaluation and/or preemption process based on partial monitoring based on attributes such as the priority of the data to be transmitted and the cast type (communication type).
  • the cast type includes one of unicast (unicast), groupcast (multicast), and broadcast (broadcast).
  • the terminal device selects a candidate time unit from the re-evaluated and/or preempted first resource selection window, where the candidate time unit includes at least time unit u; based on the partial interception results corresponding to the candidate time unit, the target transmission resource is Partial listening based re-evaluation and/or preemption process.
  • the first resource selection window may be a resource selection window corresponding to the time slot m when the terminal triggers a re-evaluation and/or preemption process based on partial monitoring at the time slot m.
  • the terminal device needs to listen on a group of time units corresponding to the candidate time units.
  • the first resource selection window is m-T3+T1 to m-T3+T2.
  • the time domain position and number of candidate time units may be determined by the terminal device itself.
  • the terminal device may obtain the minimum number threshold of candidate time units by receiving access network configuration information or reading pre-configured information.
  • the candidate time unit may only include time unit u, or may include multiple time units including time unit u.
  • the time unit u may be a set of time units. As shown in Figure 4, at the time unit m-T3, the pre-emption check (preemption check) for the resource x of the time unit m, the re-evaluation (re-evaluation) for the resource y of the time unit a, and the time Re-evaluation of resource z of unit b.
  • the candidate time units may only include time unit m, time unit a or time unit b, or may include multiple time units including time unit m, time unit a and time unit b.
  • the terminal device selects L time units in the first resource selection window to obtain candidate time units, where L is a positive integer.
  • L is equal to the number of time units in the time unit u; or, L is a positive integer not less than a first threshold, and the first threshold is a value pre-configured or configured by a network device. Or, L is equal to the number of transmission resources in the time unit u.
  • the method provided by this embodiment selects candidate time units from the first resource selection window when performing re-evaluation and/or preemption based on partial monitoring, and the candidate time units include at least time units u, the time unit u is the time unit corresponding to the resources that need to perform the re-evaluation and/or preemption process, based on the partial interception results of the candidate time units, re-evaluation and/or preemption based on partial interception are performed on the target transmission resource, In turn, the listening time of the terminal device is reduced, and the energy consumption of the terminal device in the process of re-evaluation and/or preemption is reduced.
  • the selection manner of the L time units is related to the manner of resource selection in the resource selection stage.
  • the following provides an exemplary embodiment of selecting L time units from the first resource selection window as candidate time units when the following four resource selection methods are adopted.
  • the terminal device uses resource selection based on partial monitoring, selects Y time units from the second resource selection window as candidate time units (target transmission resources) in Step 1, and performs periodic resource selection. For reservation, listen to and remove resources for Y time units in the second resource listening window, and then select the selected transmission resources from the candidate time units after resource removal in Step2.
  • Step 2 In the resource selection phase, the terminal device uses resource selection based on partial monitoring.
  • Y time units are selected from the second resource selection window as candidate time units (target transmission resources), and periodic resource selection is not performed. For reservation, listen to and remove resources for Y time units in the second resource listening window, and then select the selected transmission resources from the candidate time units after resource removal in Step2.
  • the terminal device determines B time units from the second resource selection window as target transmission resources (selected transmission resources) in Step2, and performs periodic resource reservation.
  • the terminal device determines B time units from the second resource selection window as target transmission resources (selected transmission resources) in Step2, and does not perform periodic resource reservation.
  • the time unit u includes time units ⁇ (Sy1+k*T),...,(Syu +k*T) ⁇ ; here y1 ⁇ ... ⁇ yu;
  • the second resource selection window is the resource selection window corresponding to the resource selection process
  • Sy is the yth time unit in Y time units
  • the resource reservation period of periodic resource reservation is T
  • k is the th time unit after resource selection k resource reservation periods
  • y1...yu is a positive integer not greater than Y
  • Y is a positive integer
  • T is a positive number.
  • y1 is the smallest time unit in the time unit u.
  • the value of L is related to Y time units.
  • L is equal to Y-y1+1; or, L is greater than or equal to Y-y1+1; or, L is equal to Y; or, L is greater than or equal to Y.
  • the L time units include the time unit (Sy1+k*T) corresponding to the time unit u to the last time unit (SY+k*T) in the kth resource reservation period.
  • the candidate resource set includes Y time units selected by the terminal device from the second resource selection window, and Y*k time units obtained by performing periodic resource reservation based on the Y time units.
  • resource selection based on partial monitoring is used.
  • Y time units ⁇ S1,...,SY ⁇ are selected in the second resource selection window to form a candidate resource set.
  • L time units include at least time units ⁇ Sy1+k*T, S(y1+1)+k*T,...,SY+k*T ⁇ ; or L candidate times
  • the unit contains at least the time unit u.
  • the reserved resource reservation period is T
  • the resource reservation period of periodic resource reservation is once, that is, the value range of k is 0 or 1.
  • L time units include time unit S3, and since S3 is the last time unit in the 0th resource reservation period, L at least includes time unit S3.
  • the reserved resource reservation period is T, and the resource reservation period of periodic resource reservation is once, that is, the value range of k is 0 or 1.
  • the L time units include time unit S1+T, and time unit S2+T and time unit S3+T after time unit S1+T in the first resource reservation period. That is, the L time units at least include the time unit S1+T, the time unit S2+T and the time unit S3+T.
  • the L time units at least include the time unit S1+T.
  • the L time units include the time units within the first resource selection window among the Y time units in the kth resource reservation period.
  • the L time units include the time unit of the kth resource reservation period within the first resource selection window among the Y time units.
  • the kth resource reservation period refers to the resource reservation period in which the first time unit belonging to the Y time units in the first resource selection window is located.
  • Y time units include S1, S2, S3, and S1+T, S2+T, S3+T, S1+2T, S2+2T, S3+2T obtained by performing two periodic reservations.
  • the first resource selection window includes S2+T, S3+T, S1+2T, S2+2T, and S3+2T
  • k is 1
  • the L time units include the time units S2+T and S3+T of the first resource reservation period in the first resource window among the above nine time units.
  • the L time units include time units within the first resource selection window among the Y time units.
  • the L time units include time units within the first resource selection window among the Y time units.
  • Y time units include S1, S2, S3, and S1+T, S2+T, S3+T, S1+2T, S2+2T, S3+2T obtained by performing two periodic reservations.
  • the L time units include the time units located in the first resource window among the above-mentioned 9 time units S2+T, S3+T, S1+2T, S2+2T, S3+2T.
  • the time unit u is equal to the time unit ⁇ Sy1,...,Syu ⁇ , y1 ⁇ ... ⁇ yu ;
  • the second resource selection window is the resource selection window corresponding to the resource selection process
  • Sy1,...,Syu are the y1,...,yuth time units in Y time units
  • y1,...,yu are positive integers not greater than Y
  • Y is a positive integer.
  • the value of L is related to Y time units.
  • L is equal to Y-y1+1; or, L is greater than or equal to Y-y1+1; or, L is equal to Y; or, L is greater than or equal to Y.
  • the L time units include the time unit Sy1 corresponding to the time unit u in the candidate resource set to the last time unit SY in the candidate resource set.
  • the candidate resource set (target transmission resource) includes Y time units selected by the terminal device from the second resource selection window.
  • the L time units include at least the time unit ⁇ Sy1, S(y1+1), . . . , SY ⁇ ; or the L candidate time units include at least the time unit u.
  • resource selection based on partial monitoring is used.
  • Y time units ⁇ S1,...,SY ⁇ are selected in the second resource selection window to form a candidate resource set.
  • u ⁇ Sy1,...,Syu ⁇ ; Sy1,...,Syu is the y1,...,yuth time unit within Y time units.
  • the L time units include the time unit S2 and the time unit S3 after the time unit S2 in the candidate resource set. That is, the L time units at least include the time unit S2 and the time unit S3.
  • the L time units at least include the time unit S2.
  • the L time units include time units within the first resource selection window among the Y time units.
  • Y time units include S1, S2, and S3.
  • the L time units include the time units S2 and S3 located in the first resource window among the above three time units.
  • the time unit u includes time units ⁇ (Rb1+k*T),...,(Rbu+ k*T) ⁇ ,b1 ⁇ ... ⁇ bu;
  • Rb1...Rbu is the b1...buth time unit in the B time units
  • the resource reservation period of periodic resource reservation is T
  • k is the kth resource reservation period after resource selection
  • b1...bu is A positive integer not greater than B, where B is a positive integer and T is a positive number.
  • the value of L is related to B time units.
  • L is equal to B-b1+1; or, L is greater than or equal to B-b1+1; or, L is equal to B; or, L is greater than or equal to B.
  • the L time units include the time unit (Rb1+k*T) corresponding to the time unit u to the last time unit (RB+k*T) in the kth resource reservation period.
  • the target transmission resource includes B time units selected by the terminal device through a resource selection process, and B*k time units obtained by performing periodic resource reservation based on the B time units.
  • resource selection based on partial monitoring is used.
  • B time units ⁇ R1,...,RB ⁇ are selected in the second resource selection window to form target transmission resources.
  • the reserved resource reservation period is T
  • the resource reservation period of periodic resource reservation is once, that is, the value range of k is 0 or 1.
  • L time units include time unit R3, and since R3 is the last time unit in the 0th resource reservation period, L at least includes time unit R3.
  • the reserved resource reservation period is T
  • the resource reservation period of periodic resource reservation is once, that is, the value range of k is 0 or 1.
  • the L time units include the time unit R1+T corresponding to the time unit u, and the time unit R2+T and the time unit R3+T after the time unit R1+T in the first resource reservation period. That is, L time units at least include time unit R1+T, time unit R2+T and time unit R3+T.
  • the L time units at least include the time unit R1+T corresponding to the time unit u.
  • the L time units include the time units in the first resource selection window among the B time units in the kth resource reservation period.
  • the L time units include the time unit of the kth resource reservation period within the first resource selection window among the B time units.
  • the kth resource reservation period refers to the resource reservation period in which the first time unit belonging to the B time units in the first resource selection window is located.
  • B time units include R1, R2, R3, and R1+T, R2+T, R3+T, R1+2T, R2+2T, R3+2T obtained by performing two periodic reservations.
  • the first resource selection window includes R2+T, R3+T, R1+2T, R2+2T, R3+2T
  • the L time units include the time units R2+T and R3+T of the first resource reservation period in the first resource window among the above nine time units.
  • the L time units include time units within the first resource selection window among the B time units.
  • B time units include R1, R2, R3, and R1+T, R2+T, R3+T, R1+2T, R2+2T, R3+2T obtained by performing two periodic reservations.
  • the L time units include the time units located in the first resource window among the above nine time units R2+T, R3+T, R1+2T, R2+2T, R3+2T.
  • the time unit u is equal to the time unit ⁇ Rb1,...,Rbu ⁇ , b1 ⁇ ... ⁇ bu;
  • Rb1,...,Rbu are the b1,...,bu-th time units in B time units, b1,...,bu are positive integers not greater than B, and B is a positive integer.
  • the value of L is related to B time units.
  • L is equal to B-b1+1; or, L is greater than or equal to B-b1+1; or, L is equal to B; or, L is greater than or equal to B.
  • the L time units include the time unit Rb1 corresponding to the time unit u in the target transmission resource to the last time unit RB in the target transmission resource.
  • L time units include at least time units ⁇ Rb1+k*T, R(b1+1)+k*T,...,RB+k*T ⁇ ; or L candidate times
  • the unit contains at least the time unit u.
  • the target transmission resource includes B time units selected by the terminal device through a resource selection process.
  • resource selection based on partial monitoring is used.
  • B time units ⁇ R1,...,RB ⁇ are selected in the second resource selection window to form target transmission resources.
  • u ⁇ Rb1,...,Rbu ⁇ , b1 ⁇ ..., ⁇ bu;
  • Rb is the b1,...buth time unit within the B time units.
  • the L time units include a time unit R2 and a time unit R3 after the time unit R2 in the target transmission resource. That is, the L time units at least include the time unit R2 and the time unit R3.
  • the L time units at least include the time unit R2.
  • the L time units include time units within the first resource selection window among the B time units.
  • B time units include R1, R2, and R3.
  • the L time units include the time units R2 and R3 located in the first resource window among the above three time units.
  • Fig. 13 shows a structural block diagram of an apparatus for selecting transmission resources provided by an exemplary embodiment of the present application.
  • the apparatus can be implemented as a terminal device, or can be implemented as a part of a terminal device.
  • the apparatus includes:
  • a selection module 401 configured to determine a target transmission resource during the resource selection process
  • the processing module 402 is configured to process the target transmission resource by using a re-evaluation and/or preemption process based on partial monitoring.
  • the processing module 402 is configured to, in the case of using the resource selection process based on the partial monitoring, use a re-evaluation and/or preemption process based on the partial monitoring to transfer the resources are processed.
  • the processing module 402 is configured to use a re-evaluation and/or preemption process based on partial monitoring to allocate the target transmission resources to process;
  • the configuration information includes: at least one of first configuration information sent by the access network device, second configuration information sent by a higher layer, and pre-configuration information.
  • the processing module 402 is configured to use a re-evaluation and/or preemption process based on partial monitoring to perform deal with.
  • the target transmission resources include: transmission resources within the time unit u;
  • the processing module 402 is configured to select a candidate time unit from the first resource selection window, where the candidate time unit includes at least the time unit u;
  • the processing module 402 is configured to re-evaluate and/or preempt the target transmission resource based on the partial intercept based on the partial intercept result corresponding to the candidate time unit;
  • the first resource selection window is a resource selection window corresponding to a re-evaluation and/or preemption process based on the partial monitoring.
  • the processing module 402 is configured to select L time units in the first resource selection window to obtain the candidate time units, where L is a positive integer.
  • L is equal to the number of time units in the time unit u;
  • L is a positive integer not less than a first threshold, where the first threshold is a pre-configured value or a value configured by a network device.
  • the time unit u when Y time units are selected in the second resource selection window to form a candidate resource set and periodic resource reservation is performed, the time unit u includes a time unit (Sy1+k* T) to time unit (Syu+k*T);
  • the second resource selection window is a resource selection window corresponding to the resource selection process
  • Sy1 is the y1th time unit in the Y time units
  • Syu is the yuth time unit in the Y time units Time unit
  • the resource reservation period of the periodic resource reservation is T
  • k is the kth resource reservation period after the resource selection
  • y1 and yu are positive integers not greater than Y
  • Y is a positive integer
  • T is a positive number
  • u is a positive integer.
  • the time unit u is equal to the time unit Sy;
  • the second resource selection window is a resource selection window corresponding to the resource selection process
  • Sy is the yth time unit in the Y time units
  • y is a positive integer not greater than Y
  • Y is a positive integer.
  • the value of L is related to the Y time units.
  • L is equal to Y-y1+1;
  • L is greater than or equal to Y-y1+1;
  • L is equal to Y
  • L is greater than or equal to Y.
  • the value of L is related to the Y time units.
  • L is equal to Y-y+1;
  • L is greater than or equal to Y-y+1;
  • L is equal to Y
  • L is greater than or equal to Y.
  • the L time units include a time unit (Sy1+k*T) to a last time unit (SY+k*T) in the kth resource reservation period.
  • the L time units include the time unit Sy in the candidate resource set to the last time unit SY in the candidate resource set.
  • the time unit u when it is determined in the resource selection process that B time units constitute the target transmission resource and periodic resource reservation is performed, the time unit u includes a time unit (Rb1 +k*T) to time unit (Rbu+k*T);
  • Rb1 is the b-th time unit in the B time units
  • Rbu is the bu-th time unit in the B time units
  • the resource reservation period of the periodic resource reservation is T
  • k It is the kth resource reservation period after the resource selection
  • b1 and bu are positive integers not greater than B
  • B is a positive integer
  • T is a positive number
  • u is a positive integer.
  • the time unit u is equal to the time unit Rb;
  • Rb is the b-th time unit among the B time units, b is a positive integer not greater than B, and B is a positive integer.
  • the value of L is related to the B time units.
  • L is equal to B-b1+1; or,
  • L is greater than or equal to B-b1+1;
  • L is equal to B
  • L is greater than or equal to B.
  • the value of L is related to the B time units.
  • L is equal to B-b+1;
  • L is greater than or equal to B-b+1;
  • L is equal to B
  • L is greater than or equal to B.
  • the L time units include a time unit (Rb1+k*T) to a last time unit (RB+k*T) in the kth resource reservation period.
  • the L time units include a time unit Rb in the target transmission resource to a last time unit RB in the target transmission resource.
  • the time unit u includes at least two time units
  • the re-evaluation and/or preemption process based on the partial monitoring of the at least two time units is performed separately;
  • the re-evaluation and/or preemption process based on the partial monitoring of the at least two time units is performed simultaneously.
  • the L time units include time units within the first resource selection window among the Y time units in the kth resource reservation period;
  • the L time units include time units within the first resource selection window among the Y time units.
  • the L time units include time units within the first resource selection window among the Y time units.
  • the L time units include time units within the first resource selection window among the B time units in the kth resource reservation period;
  • the L time units include time units within the first resource selection window among the B time units.
  • the L time units include time units within the first resource selection window among the B time units.
  • FIG. 14 shows a schematic structural diagram of a communication device (terminal device or network device) provided by an exemplary embodiment of the present application.
  • the communication device includes: a processor 101 , a receiver 102 , a transmitter 103 , a memory 104 and a bus 105 .
  • the processor 101 includes one or more processing cores, and the processor 101 executes various functional applications and information processing by running software programs and modules.
  • the receiver 102 and the transmitter 103 can be implemented as a communication component, which can be a communication chip.
  • the memory 104 is connected to the processor 101 through the bus 105 .
  • the memory 104 may be used to store at least one instruction, and the processor 101 is used to execute the at least one instruction, so as to implement various steps in the foregoing method embodiments.
  • the memory 104 can be implemented by any type of volatile or non-volatile storage device or their combination.
  • the volatile or non-volatile storage device includes but not limited to: magnetic disk or optical disk, electrically erasable and programmable Electrically-Erasable Programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Static Random Access Memory (SRAM), Read-Only Memory (Read-Only Memory, ROM), magnetic memory, flash memory, programmable read-only memory (Programmable Read-Only Memory, PROM).
  • the processor and the transceiver in the communication device involved in the embodiment of the present application can perform the steps performed by the terminal device in any of the above-mentioned methods, which will not be repeated here. .
  • the communication device when the communication device is implemented as a terminal device,
  • the processor is configured to determine a target transmission resource in a resource selection process; and process the target transmission resource by using a re-evaluation and/or preemption process based on partial monitoring.
  • a computer-readable storage medium stores at least one instruction, at least one program, a code set or an instruction set, the at least one instruction, the At least one section of program, the code set or instruction set is loaded and executed by the processor to implement the method for selecting transmission resources performed by the communication device provided in the above method embodiments.
  • a chip the chip includes a programmable logic circuit and/or program instructions, and when the chip is run on a computer device, it is used to implement the transmission resource described in the above aspects Method of choosing.
  • a computer program product is also provided.
  • the computer program product runs on a processor of a computer device, the computer device executes the method for selecting transmission resources described in the above aspects.
  • the program can be stored in a computer-readable storage medium.
  • the above-mentioned The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk, and the like.

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  • Computer Networks & Wireless Communication (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention a trait au domaine des communications mobiles, et concerne un procédé et un appareil de sélection de ressources de transmission, un dispositif et un support de stockage. Le procédé est appliqué à un terminal dans une transmission V2X, et comprend les étapes suivantes : déterminer une ressource de transmission cible dans un processus de sélection de ressources, et traiter la ressource de transmission cible au moyen d'un processus de réévaluation et/ou de préemption basé sur une écoute partielle. Dans le procédé, le processus de réévaluation et/ou de préemption de la ressource de transmission peut être mis en oeuvre sur la base d'une écoute partielle.
PCT/CN2021/093070 2021-05-10 2021-05-11 Procédé et appareil de sélection de ressources de transmission, dispositif et support de stockage WO2022236683A1 (fr)

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EP21941259.0A EP4340509A1 (fr) 2021-05-10 2021-05-11 Procédé et appareil de sélection de ressources de transmission, dispositif et support de stockage
CN202180001519.XA CN113455078B (zh) 2021-05-10 2021-05-11 传输资源的选择方法、装置、设备及存储介质

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CN113455078A (zh) * 2021-05-10 2021-09-28 北京小米移动软件有限公司 传输资源的选择方法、装置、设备及存储介质

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