WO2023279247A1 - 资源重选方法、装置、设备及存储介质 - Google Patents

资源重选方法、装置、设备及存储介质 Download PDF

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Publication number
WO2023279247A1
WO2023279247A1 PCT/CN2021/104587 CN2021104587W WO2023279247A1 WO 2023279247 A1 WO2023279247 A1 WO 2023279247A1 CN 2021104587 W CN2021104587 W CN 2021104587W WO 2023279247 A1 WO2023279247 A1 WO 2023279247A1
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WIPO (PCT)
Prior art keywords
time slot
resource
selection
target
terminal device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2021/104587
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English (en)
French (fr)
Chinese (zh)
Inventor
丁伊
赵振山
张世昌
林晖闵
马腾
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2021/104587 priority Critical patent/WO2023279247A1/zh
Priority to JP2023580872A priority patent/JP7759413B2/ja
Priority to CN202311831114.6A priority patent/CN117750511A/zh
Priority to PCT/CN2021/119916 priority patent/WO2023279536A1/zh
Priority to CN202180095875.2A priority patent/CN117044335A/zh
Priority to EP21949024.0A priority patent/EP4346303A4/en
Priority to KR1020247001039A priority patent/KR20240027690A/ko
Publication of WO2023279247A1 publication Critical patent/WO2023279247A1/zh
Priority to US18/399,649 priority patent/US20240231950A9/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
    • G06F9/5061—Partitioning or combining of resources
    • G06F9/5077—Logical partitioning of resources; Management or configuration of virtualized resources
    • 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
    • G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
    • G06F9/5027—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals
    • G06F9/5038—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals considering the execution order of a plurality of tasks, e.g. taking priority or time dependency constraints into consideration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0245—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal according to signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0258—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a resource reselection method, device, device, and storage medium.
  • the terminal device can select transmission resources from the resource pool by listening.
  • SL idelink, sidelink
  • the terminal device can select transmission resources from the resource pool by listening.
  • resource reselection how the terminal device determines the selection time slot and the listening time slot needs to be further studied.
  • Embodiments of the present application provide a resource reselection method, device, device, and storage medium. Described technical scheme is as follows:
  • a resource reselection method is provided, the method is performed by a terminal device, and the method includes:
  • a resource reselection device includes:
  • a determining module configured to determine a target selection time slot and a target listening time slot
  • An excluding module configured to exclude available resources in the target selection time slot according to unlistened time slots and/or listening results in the target listening time slot, to obtain a candidate resource set
  • a selection module configured to select a second resource to replace the first resource from the set of candidate resources when it is determined to reselect the first resource already selected by the terminal device.
  • a terminal device includes a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program to implement the resource reselection method described above .
  • a computer-readable storage medium where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor, so as to implement the resource reselection method above.
  • a chip includes a programmable logic circuit and/or program instructions, and is used to implement the resource reselection method when the chip is running.
  • a computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and a processor reads from the The computer-readable storage medium reads and executes the computer instructions, so as to implement the resource-based reselection method described above.
  • the terminal device When the terminal device performs partial interception and performs semi-persistent transmission or periodic transmission, if it executes the Pre-emption mechanism to determine that the resource is preempted, or executes the Re-evaluation mechanism to determine that the resource conflicts, trigger resource reselection to avoid resource collision , improving communication reliability.
  • FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of the present application.
  • FIG. 2 schematically shows a schematic diagram of a physical layer structure of SL communication
  • FIG. 3 exemplarily shows a schematic diagram of time-frequency resource position reservation
  • Fig. 4 exemplarily shows a schematic diagram of all interception and resource selection
  • Fig. 5 exemplarily shows a schematic diagram of a resource reassessment mechanism
  • FIG. 6 exemplarily shows a schematic diagram of a resource preemption mechanism
  • FIG. 7 exemplarily shows a schematic diagram of resource selection for partial interception
  • Fig. 8 exemplarily shows a schematic diagram of a resource reselection process
  • FIG. 9 is a flowchart of a resource reselection method provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a resource reselection method provided by an embodiment of the present application.
  • FIG. 11 is a block diagram of a resource reselection device provided by an embodiment of the present application.
  • Fig. 12 is a structural block diagram of a terminal device provided by an embodiment of the present application.
  • the network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the evolution of the technology and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.
  • FIG. 1 shows a schematic diagram of a network architecture provided by an embodiment of the present application.
  • the network architecture may include: a core network 11 , an access network 12 and a terminal device 13 .
  • the core network 11 includes several core network devices.
  • the functions of the core network equipment are mainly to provide user connections, manage users, and carry out services, and provide an interface to the external network as a bearer network.
  • the core network of the 5G (5th Generation, fifth-generation mobile communication technology) NR (New Radio, new air interface) system may include AMF (Access and Mobility Management Function, access and mobility management function) entities, UPF (User Plane Function, user plane function) entity and SMF (Session Management Function, session management function) entity and other devices.
  • AMF Access and Mobility Management Function, access and mobility management function
  • UPF User Plane Function
  • user plane function User Plane Function
  • SMF Session Management Function, session management function
  • the access network 12 includes several access network devices 14.
  • the access network in the 5G NR system may be called NG-RAN (New Generation-Radio Access Network, New Generation Radio Access Network).
  • the access network device 14 is a device deployed in the access network 12 to provide a wireless communication function for the terminal device 13 .
  • the access network device 14 may include various forms of macro base stations, micro base stations, relay stations, access points and so on.
  • the name of the device with access network device functions may be different.
  • gNodeB Next Generation Node B, 5G base station
  • gNB Next Generation Node B, 5G base station
  • the name "access network equipment" may change.
  • the above-mentioned devices that provide the wireless communication function for the terminal device 13 are collectively referred to as access network devices.
  • the number of terminal devices 13 is generally multiple, and one or more terminal devices 13 may be distributed in a cell managed by each access network device 14 .
  • the terminal device 13 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of user equipment, mobile stations (Mobile Station, MS) etc.
  • the devices mentioned above are collectively referred to as terminal devices.
  • the access network device 14 and the core network device communicate with each other through some air technology, such as the NG interface in the 5G NR system.
  • the access network device 14 and the terminal device 13 communicate with each other through some air technology, such as Uu interface.
  • the terminal device 13 and the terminal device 13 can communicate with each other through a direct connection communication interface (such as PC5 interface) , correspondingly, the communication link established based on the direct communication interface may be called a direct link or SL.
  • SL transmission is the direct communication data transmission between terminal devices through sidelinks. Unlike traditional cellular systems where communication data is received or sent through access network devices, SL transmission has short delay and low overhead.
  • the terminal device in this application refers to any device that communicates using the SL technology.
  • 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 UE and the terminal device in the embodiments of the present disclosure have the same meaning, and the two can replace each other.
  • 3GPP 3rd Generation Partnership Project, 3rd Generation Partnership Project
  • mode A the transmission modes
  • mode B the transmission modes
  • the transmission resource of the terminal device is allocated by the access network device (such as a base station), and the terminal device transmits communication data on the sidelink according to the transmission resources allocated by the access network device.
  • the access network device such as a base station
  • the transmission resources for a single transmission can be allocated to the terminal equipment, and the transmission resources for semi-static transmission can also be allocated to the terminal equipment.
  • Mode B The terminal device selects transmission resources from the resource pool to transmit communication data. Specifically, the terminal device may select transmission resources from the resource pool by listening, or select transmission resources from the resource pool by random selection.
  • PSCCH Physical Sidelink Control Channel, physical sidelink control channel
  • PSSCH Physical Sidelink Shared Channel, physical sidelink shared channel
  • PSCCH and PSSCH are sent in the same slot.
  • the above-mentioned first lateral control information and second lateral control information may be two lateral control information with different functions.
  • the first sideline control information is carried in the PSCCH, which mainly includes domains related to resource interception, so that other terminal devices can perform resource exclusion and resource selection after decoding.
  • the PSSCH also carries second sidelink control information.
  • the second sidelink control information mainly includes fields related to data demodulation, so as to facilitate other terminal devices to demodulate data in the PSSCH.
  • the terminal device selects the transmission resources to send data by itself.
  • Resource reservation is the premise of resource selection.
  • resource reservation within a TB Transport Block
  • resource reservation between TBs is supported as well as resource reservation between TBs.
  • the terminal device sends the first sideline control information, and uses the "Time resource assignment (time resource assignment)" and "Frequency resource assignment (frequency resource assignment)" fields to indicate the N time-frequency resources of the current TB (including resources currently used for sending).
  • Nmax is equal to 2 or 3.
  • the above N indicated time-frequency resources should be distributed in W time slots.
  • W is equal to 32.
  • the terminal device sends the first sidelink control information in the PSCCH while sending the initial transmission data on the PSSCH, and uses the above two fields to indicate the time-frequency resource positions of the initial transmission and retransmission 1 (i.e.
  • the initial transmission and the retransmission 1 are distributed in 32 time slots in the time domain.
  • the terminal device uses the first sideline control information sent in the PSCCH of retransmission 1 to indicate the time-frequency resource positions of retransmission 1 and retransmission 2, and retransmission 1 and retransmission 2 It is distributed in 32 time slots in the time domain.
  • the "Resource reservation period (resource reservation period)" field is used to reserve resources between TBs.
  • the terminal device uses the "Time resource assignment” and “Frequency resource assignment” fields to indicate the time-frequency resource positions of the initial transmission and retransmission 1 of TB1, record is ⁇ (t 1 , f 1 ), (t 2 , f 2 ) ⁇ .
  • t 1 and t 2 represent the time domain positions of TB1 initial transmission and retransmission 1 resources
  • f 1 and f 2 represent corresponding frequency domain positions.
  • the SCI (Sidelink Control Information, sidelink control information) also indicates the time-frequency resource ⁇ (t 1 +100 ,f 1 ),(t 2 +100,f 2 ) ⁇ , these two resources are used for the transmission of TB2 initial transmission and retransmission 1.
  • the first sideline control information sent in TB1 retransmission 1 also uses the "Resource reservation period" field to reserve the time-frequency resources of TB2 retransmission 1 and retransmission 2.
  • the possible values of the "Resource reservation period" field are 0, 1-99, 100, 200, 300, 400, 500, 600, 700, 800, 900, and 1000 milliseconds.
  • V2X is more flexible.
  • e values are configured, and the terminal device determines possible values according to the used resource pool.
  • the value of e in the resource pool configuration is the resource reservation period set M, for example, e is less than or equal to 16.
  • the above-mentioned inter-TB reservation can be activated or deactivated in units of resource pools.
  • the "Resource reservation period" field is not included in the first side line control information.
  • the value of the "Resource reservation period” field used by the terminal device that is, the resource reservation period will not change, and the terminal device will use it every time it sends the first side line control information.
  • the "Resource reservation period” field of the "Resource reservation period” field reserves the resources of the next period for the transmission of another TB, so as to achieve periodic semi-persistent transmission.
  • the terminal device can obtain the first sidelink control information sent by other terminal devices by listening to the PSCCH sent by other terminal devices, so as to know the resources reserved by other terminal devices.
  • the terminal device selects resources, it will exclude resources reserved by other terminal devices, thereby avoiding resource collisions.
  • the terminal device In the NR V2X system, in the above mode B, the terminal device needs to select resources by itself.
  • the terminal device triggers resource selection or reselection at time slot n or time slot n is the time slot where the upper layer triggers the physical layer to report the candidate resource set, and the resource selection window starts from n+T 1 to n+T 2 Finish.
  • the terminal device determines T 2min from the value set according to the priority of its data to be sent. For example, when the subcarrier interval is 15kHz, the terminal device determines T 2min from the set ⁇ 1, 5, 10, 20 ⁇ according to the priority of its own data to be sent.
  • T 2min is greater than or equal to the remaining delay budget of the service
  • T 2 is equal to the remaining delay budget of the service.
  • the remaining delay budget is the difference between the time corresponding to the data delay requirement and the current time.
  • the delay requirement is 50 milliseconds.
  • a time slot is 1 millisecond. If the current time is time slot n, the remaining delay budget is 50 milliseconds. If the current time is time slot n+20 , the remaining delay budget is 30 milliseconds.
  • the terminal device performs resource monitoring from nT 0 to nT proc,0 (nT proc,0 is not included), and the value of T 0 is 100 or 1100 milliseconds.
  • T proc,0 is 1, 1, 2, 4 time slots.
  • a terminal device listens to the first sideline control information sent by other terminal devices in each time slot (except its own sending time slot).
  • time slot n triggers resource selection or reselection
  • the terminal device uses nT 0 to The result of nT proc,0 resource snooping.
  • Step 1 The terminal device takes all the available resources belonging to the resource pool used by the terminal device in the resource selection window as the resource set A, and any resource in the set A is recorded as R(x, y), and x and y respectively indicate the frequency domain of the resource location and time domain location. Note that the initial quantity of resources in collection A is M total .
  • the terminal device judges whether the resource R(x, y) or a series of periodic resources corresponding to the resource R(x, y) is the same as the time slot determined in Step 1-1 according to the unlistened time slot or in Step 1-2 according to The resources determined by the intercepted first lateral control information overlap, and if they overlap, the resource R(x,y) is excluded from the resource set A.
  • the terminal device will judge whether the Q time slots corresponding to each reserved period overlap with the resource R(x, y) or a series of periodic resources corresponding to the resource R(x, y). A resource R(x,y) is excluded from A.
  • the terminal device may not perform the above Step 1-1.
  • the remaining resources in resource set A are less than M total *X%, then initialize resource set A to all available resources belonging to the resource pool used by the terminal device in the resource selection window, and then execute Step 1-2.
  • Step 1-2 If the terminal device detects the first sidelink control information transmitted in the PSCCH within the time slot m of the resource listening window, measure the SL-RSRP (Sidelink Reference Signal Received Power, sidelink reference signal) of the PSCCH received power) or the SL-RSRP of the PSSCH scheduled by the PSCCH (that is, the SL-RSRP of the PSSCH transmitted in the same time slot as the PSCCH).
  • SL-RSRP Systemlink Reference Signal Received Power, sidelink reference signal
  • the terminal device will reserve resources according to time slot m and the detected first sideline control information.
  • the resource reservation period is used as an interval to determine corresponding Q time slots.
  • the terminal device assumes that it has also received the first sideline control information with the same content in the Q time slots.
  • the terminal device will determine the resource and resource R indicated by the "Time resource assignment" and "Frequency resource assignment" fields of the first sidelink control information received in time slot m and the assumed Q pieces of first sidelink control information received.
  • T scal is equal to the value of T2 converted into milliseconds.
  • Prx is the resource reservation period carried in the sensed first sideline control information.
  • the terminal device when the resource pool used by the terminal device activates the reservation between TBs, if the terminal device detects the first sideline control in the PSCCH on the resource E(v,m) of time slot m information, the resource reservation period in the first side line control information is Prx, assuming that the Q value is calculated as 1, the terminal device will assume that the first side line control information with the same content is also received on the time slot m+Prx.
  • the terminal device will judge the first sideline control information received at time slot m and the resources indicated by the "Time resource assignment" and "Frequency resource assignment" fields of the first sideline control information received at time slot m+Prx Whether 1, 2, 3, 4, 5, 6 overlaps with resource R(x,y) or a series of periodic resources corresponding to resource R(x,y). Exclude resource R(x,y).
  • the terminal device If the SL-RSRP measured by the terminal device is greater than the SL-RSRP threshold, and the resource pool used by the terminal device deactivates resource reservation between TBs, the terminal device only judges the "Time resource assignment" and "Frequency resource assignment" fields indicate whether the resource overlaps with the resource R(x,y) or a series of resources corresponding to the resource R(x,y), and if so, excludes the resource R from the resource set A( x,y).
  • the terminal device when the resource pool used by the terminal device deactivates the inter-TB reservation, if the terminal device detects the first side row in the PSCCH on the resource E(v,m) of time slot m control information, the terminal device judges that resources 1, 2, and 3 indicated by the fields "Time resource assignment” and "Frequency resource assignment" in the first side line control information are related to resource R(x, y) or resource R(x, y) Whether the corresponding series of periodic resources overlap, and if they overlap and satisfy the RSRP condition, the resource R(x,y) is excluded from the resource set A.
  • Step 1 If the remaining resources in resource set A are less than M total *X% after the above resources are excluded, raise the SL-RSRP threshold by 3dB, and execute Step 1 again.
  • the physical layer reports the resource set A after resource exclusion as a candidate resource set to the upper layer.
  • Step 2 The upper layer randomly selects resources from the reported candidate resource set to send data. That is, the terminal device randomly selects a resource from the candidate resource set to send data.
  • the above SL-RSRP threshold is determined by the priority P1 carried in the PSCCH detected by the terminal device and the priority P2 of the data to be sent by the terminal device.
  • the configuration of the resource pool used by the terminal device includes an SL-RSRP threshold table, and the SL-RSRP threshold table includes SL-RSRP thresholds corresponding to all priority combinations.
  • the configuration of the resource pool can be network configuration or pre-configuration.
  • the SL-RSRP thresholds corresponding to different priority combinations are denoted by ⁇ ij , where i in ⁇ ij is priority j is the value of the priority level P1, and j is the value of the priority level P2.
  • the terminal device When the terminal device detects the PSCCH sent by other terminal devices, obtains the priority P1 carried in the first sidelink control information transmitted in the PSCCH and the priority P2 of the data to be sent, and the terminal device determines the SL by looking up table 1 - RSRP threshold.
  • the terminal device uses the measured PSCCH-RSRP or the PSSCH-RSRP scheduled by the PSCCH to compare with the SL-RSRP threshold depends on the resource pool configuration of the resource pool used by the terminal device.
  • the configuration of the resource pool can be network configuration or pre-configuration.
  • the configuration of the resource pool used by the terminal device includes the corresponding relationship between the priority and the above possible values, and the terminal device determines the value of X according to the priority of the data to be sent and the corresponding relationship.
  • the resource pool configuration can be configured by the network or pre-configured.
  • the above introduction is an SL communication method in NR-V2X, that is, the terminal device independently selects transmission resources through resource monitoring, and performs data transmission on the sidelink by itself.
  • This SL communication method can also be applied to various SL communications such as direct communication between handheld terminals and direct communication between pedestrians and vehicles.
  • Re-evaluation is also supported for resources that have been selected but not indicated by sending the first sidelink control information.
  • resources x, y, z, u, and v are time-frequency resources selected by the terminal device in time slot n, and resource y is located in time slot m.
  • the terminal device executes at least in time slot mT 3
  • the above Step 1 is performed once, that is, at least in the time slot mT3 , the resource selection window and the resource listening window are determined according to the above, and the above Step 1 is executed to exclude resources in the resource selection window to obtain a candidate resource set.
  • the terminal device performs the above Step 2 to reselect the time-frequency resources in resource z and u that are not in the candidate resource set.
  • the terminal device can also reselect any Resources that have been selected but not indicated by sending the first sideline control information, for example, any one or more resources among resources z, u and v.
  • the above T 3 is equal to T proc,1 .
  • the dotted arrow in FIG. 5 indicates that the first side row control information indication is about to be sent, and the solid line arrow indicates that the first side row control information indication has already been sent.
  • NR-V2X also supports the resource preemption (Pre-emption) mechanism.
  • the second terminal device may preempt resources that have been selected by the first terminal device and indicated by sending the first sidelink control information.
  • the conclusion about the resource preemption mechanism is described from the perspective of the preempted terminal, specifically: after the resource selection is completed, the terminal device still continues to listen to the first side line control information, if it has selected and passed the first side line control information If the indicated resource meets the following three conditions, it means that the resource is preempted by other terminal devices, and the terminal device triggers resource reselection for this resource:
  • the resource indicated in the intercepted first lateral control information overlaps with the resource selected and indicated by the terminal device.
  • the SL-RSRP of the PSCCH corresponding to the sensed first sidelink control information or the SL-RSRP of the PSSCH scheduled by the PSCCH is greater than the SL RSRP threshold.
  • the priority carried in the intercepted first sidelink control information is higher than the priority of the data to be sent by the terminal device. or the priority carried in the intercepted first sideline control information is higher than the priority of the data to be sent by the terminal device, and the priority carried in the intercepted first sideline control information is higher than the threshold value U, U depends on the resource pool configuration, which can be configured or pre-configured by the network.
  • both the first terminal device and the second terminal device are devices with a transmission function in NR V2X.
  • the first terminal device and the second terminal device are two different terminal devices.
  • 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 For resources x and y indicated by the first sidelink control information that the terminal device is about to send on resource x and that have been indicated by the first sidelink control information previously sent by the terminal device, the terminal device performs the above Step at least once in time slot mT3 1. That is, at least in the time slot mT 3. Determine the resource selection window and listening window as above, and execute the above Step 1 to exclude the available resources in the resource selection window, and determine the candidate resource set.
  • Step 2 the terminal device performs Step 2 to reselect time-frequency resources among resources x and y that meet the above three conditions.
  • the terminal device may reselect any resource that has been selected but not indicated by sending the first sideline control information, such as any number of resources z and v.
  • the above T 3 is equal to T proc,1 .
  • the above introduction is an SL communication method in NR-V2X, that is, the terminal device independently selects transmission resources through resource monitoring, and performs data transmission on the sidelink by itself.
  • This SL communication method can also be applied to various SL communications such as direct communication between handheld terminals and direct communication between pedestrians and vehicles.
  • the above-mentioned method for terminal devices to independently select transmission resources through resource interception does not consider power saving.
  • the resource selection method of partial interception is an energy-saving and power-saving resource selection designed for power-sensitive terminals such as handheld terminals.
  • the method mainly achieves the purpose of energy saving by limiting the number of time units for resource selection and the number of time units for resource interception.
  • the terminal device determines the corresponding listening time slot according to at least Y time slots determined in the resource selection window and the resource reservation period set M or a subset of M in the resource pool configuration.
  • resource exclusion is performed on the resources in the above-mentioned at least Y time slots, for example, the specific exclusion process You can refer to Step 1 above to select resources to send data from the resources not excluded.
  • the terminal device has determined a total of Y time slots from t 1 to ty within the resource selection window, and the resource reservation period set M in the resource pool configuration used by it includes periods P 1 , P 2 and P 3 .
  • the terminal device determines the listening time slots in the resource listening window as t 1 -P 1 to t y -P 1 , t 1 -P 2 according to each resource reservation period in the set M and Y time slots to t y -P 2 and t 1 -P 3 to t y -P 3 . That is, according to the Y time slots and each resource reservation period, the corresponding time slot belonging to the latest period of the resource listening window is determined.
  • the terminal device When the terminal device performs resource selection or reselection in time slot n, it will at least exclude resources in the above Y time slots based on the listening results and/or unlistened time slots in the time slots determined in the above resource listening window , for example, to exclude according to Step 1, and finally select resources from the remaining resources in the Y time slots to send data.
  • the above-mentioned partial listening mechanism is applicable to periodic transmission, and the position of time slot n is predicted according to the period, and then the resource selection window is determined, at least Y time slots are determined from it, and the corresponding time slot is determined according to at least Y time slots. Listening time slots, when the time goes to the listening time slot, the listening is performed, when the time goes to time slot n, resource selection or reselection is triggered, and transmission resources are selected from at least Y time slots.
  • the above at least Y time slots may be consecutive time slots or non-consecutive time slots.
  • the Re-evaluation mechanism and the Pre-emption mechanism are not supported, that is, when the terminal device triggers resource selection or resource reselection in subframe n, and selects resources based on partial interception, the Re-evaluation mechanism will not be executed for Unindicated resources or the implementation of the Pre-emption mechanism triggers resource reselection for indicated resources.
  • the terminal device performs semi-persistent transmission or periodic transmission, after the terminal device completes resource selection or reselection, in general, in each period, the resource reservation period field is used to indicate the resources of the next period for another TB transfer.
  • the resource reservation period field in the sideline control information is used to indicate the next period Resources 4, 5, 6.
  • the resource reservation period field is used to indicate resources of the next period, such as 7, 8, and 9. The end device repeats this behavior until the next resource selection or reselection is triggered.
  • the Re-evaluation mechanism and the Pre-emption mechanism are supported.
  • the terminal device triggers resource selection or resource reselection in time slot n, and selects resources based on partial interception, it performs Re-evaluation for unindicated resources.
  • the resource reselection will be triggered due to resource conflict or resource preemption during the implementation of the Pre-emption mechanism or the indicated resource.
  • the terminal device performs semi-persistent transmission or periodic transmission, after the terminal device completes resource selection or reselection, in general, in each period, the resource reservation period field is used to indicate the resources of the next period for another TB transmission.
  • the terminal device can execute the Re-evaluation mechanism for unindicated resources, triggering resource reselection when a resource conflict occurs, and the terminal device can also execute the Pre-emption mechanism for the indicated resources, when the resource is preempted Trigger resource reselection.
  • the Re-evaluation or Pre-emption mechanism can be activated or deactivated in units of resource pools. For example, in Figure 8, it is assumed that the resource pool used by the terminal device activates the Pre-emption mechanism, and based on partial interception in time slot n, Q time slots in the resource selection window and the corresponding listening time slots are determined. Resources 1,2,3 are selected in the time slot.
  • the resource reservation period field in the first side line control information is used to indicate the resources 4, 5, and 6 of the next cycle.
  • the terminal device will trigger the Pre-emption mechanism for the indicated resources.
  • the terminal device finds that resource 4 is preempted, and the terminal device selects a new transmission resource. Then, for this new resource, the terminal device can also trigger the Re-evaluation mechanism before it is instructed.
  • the terminal device triggers the Pre-emption mechanism and/or the Re-evaluation mechanism to determine whether to determine the corresponding M selection time slots and then perform resource reselection to select new resources. , if it is determined, whether there is a relationship between the Q selected time slots determined in the previous cycle, and how to determine the corresponding listening time slots according to the M selected time slots, these are new problems in NR SL, the corresponding problem Neither is standardized.
  • FIG. 9 shows a flowchart of a resource reselection method provided by an embodiment of the present application.
  • the method can be applied to the network architecture shown in FIG. 1 , for example, the method can be executed by a terminal device.
  • the method may include the following steps (910-930):
  • Step 910 determine a target selection time slot and a target listening time slot.
  • the terminal device may be any terminal device.
  • the terminal device may serve as a sending end of SL communication based on the V2X environment.
  • the terminal device first determines the target selection time slot, and determines the target listening time slot based on the target selection time slot.
  • the resource reselection process includes a resource reselection process triggered by a Re-evaluation mechanism and/or a resource reselection process triggered by a Pre-emption mechanism.
  • the terminal device may perform SL communication with one other terminal device, or may perform SL communication with multiple other terminal devices.
  • the resource reselection solution provided in the embodiment of the present application is applicable to a terminal device performing partial interception, and the terminal device performs semi-persistent transmission or periodic transmission.
  • the target selection time slot and the target listening time slot refer to the selection time slot and the listening time slot determined by the terminal device for the resource reselection process.
  • the terminal device may first determine the target selection time slot, and then determine the target interception time slot according to the target selection time slot and the resource reservation period.
  • the target selection slot and target listening slot please refer to the description below.
  • Step 920 according to the unlistened time slots and/or the listening results in the target listening slot, exclude the available resources in the target selection slot to obtain a candidate resource set.
  • the terminal device executes Step 1-1 to exclude available resources in the target selection time slot according to the unlistened time slots in the target listening time slot, and/or, the terminal The device executes Step 1-2 to exclude the available resources in the target selection time slot according to the interception results in the target interception time slot, and obtain the candidate resource set.
  • Step 1-1 and Step 1-2 can be found above, and will not be repeated here.
  • Step 930 If it is determined to reselect the first resource already selected by the terminal device, select a second resource to replace the first resource from the candidate resource set.
  • the terminal device determines to reselect the first resource.
  • the terminal device determines to reselect the first resource.
  • the terminal device determines to reselect the first resource , the three conditions include:
  • the resource indicated in the intercepted first lateral control information overlaps with the first resource.
  • the signal quality (such as SL-RSRP) of the PSCCH corresponding to the intercepted first sidelink control information or the signal quality (such as SL-RSRP) of the PSSCH scheduled by the PSCCH is greater than the threshold.
  • the priority carried in the intercepted first sidelink control information is higher than the priority of the data to be sent by the terminal device. or the priority carried in the intercepted first sideline control information is higher than the priority of the data to be sent by the terminal device, and the priority carried in the intercepted first sideline control information is higher than the threshold value U, U depends on the resource pool configuration, which can be configured or pre-configured by the network.
  • the aforementioned data to be sent refers to data to be sent through the first resource.
  • the priority is represented by a priority value. If the priority value is larger, it means that the priority is higher. Then the above priority is higher than the threshold value U, which means that the priority value is greater than the threshold value U; if priority The smaller the level value is, the higher the priority is. The above priority is higher than the threshold value U, which means that the priority value is smaller than the threshold value U.
  • the first resource may be any resource selected by the terminal device.
  • the first resource is a selected resource after the first cycle after initial resource selection or initial resource reselection or resource selection or resource reselection.
  • the first resource is the selected resource for the second period (or the third period, the fourth period, etc.) after the initial resource selection or initial resource reselection or resource selection or resource reselection.
  • the selected resources are selected and not indicated resources, or selected and indicated resources.
  • the first resource is a resource that has been selected and indicated by the terminal device.
  • the terminal device may perform resource reselection on the selected and indicated first resource.
  • the first resource is a resource that has been selected and not indicated by the terminal device.
  • the terminal device may perform resource reselection on the first resource that has been selected and not indicated .
  • the first resource is a resource selected by the terminal device due to initial resource selection or initial resource reselection or resource selection or resource reselection.
  • the first resource may be a resource selected by the terminal device but not indicated by sending the first sideline control information, or a resource selected by the terminal device and indicated by sending the first sideline control information.
  • the foregoing initial resource selection or initial resource reselection or resource selection or resource reselection does not include resource reselection caused by a Re-evaluation mechanism or a Pre-emption mechanism or aborted transmission.
  • the initial resource selection or initial resource reselection or resource selection or resource reselection performed by the terminal device is not reselection for the selected resource.
  • the above-mentioned initial resource selection or initial resource reselection or resource selection or resource reselection refers to that the terminal device maintains a counter (counter), since the counter value is reduced to 0 and the value in [0,1] generated by the terminal device
  • resource selection or resource reselection is triggered.
  • the transmission of the terminal device corresponds to the last transmission of a MAC PDU (Medium Access Control Packet Data Unit, Media Access Control Protocol Data Unit)
  • the counter value is decremented by 1.
  • P is configured or pre-configured by the network or depends on the value implemented by the end device or specified by the standard.
  • P is configured according to RRC (Radio Resource Control, radio resource control) signaling.
  • P is configured by the RRC layer.
  • the initial resource selection or initial resource reselection or resource selection or resource reselection is predictable.
  • the second resource is any resource in the candidate resource set.
  • the terminal device may randomly select a resource from the candidate resource set as the second resource.
  • the second resource is used to replace the first resource, that is, the data that originally needs to be transmitted through the first resource can be transmitted through the second resource.
  • the target selection time slot satisfies at least one of the following conditions:
  • the target selection time slot includes at least M time slots, M is greater than or equal to D, and D is specified by network configuration or pre-configuration or standard or depends on the implementation of the terminal equipment. Optionally, D is included in the resource pool configuration.
  • the target selection time slot is determined according to the first selection time slot, and the first selection time slot includes the selection time slot determined by the terminal device for initial resource selection or initial resource reselection or resource selection or resource reselection.
  • the target selection time slot is determined by adding the first selection time slot to a period of W times, where W is a positive integer.
  • W is a positive integer.
  • the first selected time slot is added to the period of W times, and the time slot determined by the addition is the target selected time slot.
  • the target selected time slot includes at least a time slot determined by adding the first selected time slot to a period of W times, where W is a positive integer.
  • W is a positive integer.
  • the first selected time slot is added to the cycle of W times
  • the target selected time slot includes at least the time slot determined by the addition, and optionally also includes one or more other time slots, and the determination of the other time slots The manner may depend on the implementation of the terminal device, which is not limited in this application.
  • the target selected time slot is determined according to the second selected time slot, and the second selected time slot includes the selected time slot determined by the terminal device for the previous period.
  • the second selected time slot includes the selected time slot determined by the terminal device for the transmission in the last cycle, and the information transmitted in the last cycle includes but not limited to at least one of the following: TB, MAC PDU, and data.
  • the second selected time slot includes the selected time slot determined by the terminal device for executing the Pre-emption mechanism and/or the Re-evaluation mechanism in the previous cycle.
  • the target selection time slot is determined by adding the second selection time slot and the period. For example, the second selected time slot is added to one period, and the time slot determined by the addition is the target selected time slot.
  • the target selection time slot includes at least a time slot determined by adding the second selection time slot and the period.
  • the second selected time slot is added to a cycle
  • the target selected time slot includes at least the time slot determined by the addition, and optionally also includes one or more other time slots, and the determination method of the other time slots can be It depends on the implementation of the terminal device, which is not limited in this application.
  • the target selection time slot is a selection time slot determined for an F-th cycle after initial resource selection or initial resource reselection or resource selection or resource reselection, and F is greater than 1. That is to say, the resource reselection process provided by this embodiment is not aimed at initial resource selection or initial resource reselection or the first cycle after resource selection or resource reselection, but the second cycle or the second cycle after the cycle.
  • the foregoing period is a resource reservation period of the terminal device.
  • the above period is indicated to the physical layer of the terminal device by the high layer of the terminal device.
  • the target listening slot includes at least one of the following:
  • At least one listening time slot determined based on the target selection time slot and at least one resource reservation period; wherein the at least one resource reservation period includes all or part of the resource reservation periods in the resource reservation period set used by the terminal device stay period.
  • the at least one resource reservation period includes all or part of the resource reservation periods in the resource reservation period set in the resource pool used by the terminal device.
  • the listening time slot determined based on the time slot S and at least one resource reservation period is a time slot S-R*Ps, and Ps is reserved for the above at least one resource Period, R is a positive integer.
  • different resource reservation periods correspond to the same value of R; or, there are at least two different resource reservation periods corresponding to different values of R.
  • R is the minimum value that makes the listening time slot before the reference time point
  • the reference time point is determined according to the time slot T
  • the time slot T is the time slot with the highest position in the time domain among the target selection time slots.
  • the target resource selection period corresponds to multiple values of R.
  • the determined listening time slots are S-Ps and S-2*Ps.
  • the multiple values of R include a minimum value that causes the listening time slot to be before the reference time point.
  • At least one listening time slot from the second time slot to the first time slot determined based on the first time slot in the target selection time slot; wherein the second time slot is located before the first time slot.
  • the target listening time slot can be [S-W, S) or (S-W, S) or (S-W, S] or [S-W, S ], W is a positive integer.
  • W is 31 or 32.
  • W is a physical time slot or a logical time slot.
  • time slot S is any one of the target selection time slots.
  • a physical time slot is a continuous time slot in the time domain. For example, there are 10 physical time slots between two resources. These 10 physical time slots must be in a continuous period, but the above 10 physical time slots are not necessarily All are used for data transmission, and may also be used for transmission of other information (such as synchronization signals), therefore, only 5 time slots in 10 physical time slots may be used for terminal equipment to perform data transmission.
  • Logical time slots are logically connected (with the same function), but there may actually be a time slot interval. For example, there is a difference of 5 logical time slots between two resources. These 5 logical time slots may not be continuous, but they are all used for Terminal equipment for data transmission.
  • the terminal device determines the resource selection window and the resource listening window; according to the unlistened time slots and/or listening results in the first period, the available resources in the second period are excluded to obtain the candidate A resource set; wherein, the first time period is the intersection of the resource listening window and the target listening time slot, and the second time period is the intersection of the resource selection window and the target selection time slot.
  • the terminal device should determine the target selection time slot within the resource selection window, and correspondingly there is an interception result in the target interception time slot within the resource interception window.
  • the terminal device should listen to the target listening time slot in the resource listening window corresponding to the target selection time slot in the resource selection window.
  • the terminal device when the terminal device performs partial interception and performs semi-persistent transmission or periodic transmission, if the Pre-emption mechanism is executed to determine that the resource is preempted, or the Re-evaluation mechanism is executed Determine resource conflicts, trigger resource reselection, avoid resource collisions, and improve communication reliability.
  • the terminal device determines Q selection time slots and corresponding listening time slots for initial resource selection or initial resource reselection or resource selection or resource reselection. For initial resource selection or initial resource reselection or a second period after resource selection or resource reselection, M selection time slots and corresponding listening time slots are determined. For any time slot K in the Q selected time slots, the terminal equipment adds the time slot K to a cycle (such as the resource reservation cycle), and determines the added time slot as the time slot in the M selected time slots Gap.
  • the above M is greater than or equal to the parameter D in the resource pool configuration.
  • the terminal device determines the time slot corresponding to SR*Ps and [SW, S) as the listening time slot corresponding to the M selected time slots.
  • the time slot S is any one of the M selected time slots, and Ps is each period in the resource reservation period set in the resource pool configuration used by the terminal device.
  • R is the smallest positive integer that makes SR*Ps before the reference time point.
  • the reference time point is TT proc,0 -T proc,1 .
  • T is the first time slot in the time domain among the M selected time slots.
  • T proc,0 and T proc,1 can refer to the introduction above.
  • W is 31 logical time slots.
  • the terminal device selects resources 1, 2, and 3 based on partial interception in time slot n, and uses the resource reservation period field in the first sideline control information to indicate when sending resources 1, 2, and 3 Resources 4, 5, 6.
  • the terminal device executes the Pre-emption mechanism on the target resources 4, 5, and 6 at mT 3 , the target resource 4 is located in time slot m, and T 3 is T proc,1 .
  • the terminal device determines the resource selection window and the resource listening window, and according to the unlistened time slots and/or listening results in the listening slots in the resource listening window, selects the available resources in the selected slots in the resource selection window Exclude and construct a set of candidate resources.
  • Step 1 limit the resource selection window in the above introduction to the selection time slot in the resource selection window, and limit the resource listening window in the above introduction to the interception in the resource listening window Listen to time slots. If the target resource 4 or 5 or 6 is not in the candidate resource set, it is further judged whether it satisfies the following three conditions:
  • the resource indicated in the intercepted first lateral control information overlaps with the target resource.
  • the SL-RSRP of the PSCCH corresponding to the sensed first sidelink control information or the SL-RSRP of the PSSCH scheduled by the PSCCH is greater than the SL RSRP threshold.
  • the priority carried in the intercepted first sidelink control information is higher than the priority of the data to be sent by the terminal device. or the priority carried in the intercepted first sideline control information is higher than the priority of the data to be sent by the terminal device, and the priority carried in the intercepted first sideline control information is higher than the threshold value U, U depends on the resource pool configuration, which can be configured or pre-configured by the network.
  • the priority is represented by a priority value. If the priority value is larger, it means that the priority is higher. Then the above priority is higher than the threshold value U, which means that the priority value is greater than the threshold value U; if priority The smaller the level value is, the higher the priority is. The above priority is higher than the threshold value U, which means that the priority value is smaller than the threshold value U.
  • the terminal device may also reselect any one or more unindicated resources in the candidate resource set.
  • the terminal device determines Q selection time slots and corresponding listening time slots for initial resource selection or initial resource reselection or resource selection or resource reselection. For initial resource selection or initial resource reselection or a second period after resource selection or resource reselection, M selection time slots and corresponding listening time slots are determined. For any time slot K in the Q selected time slots, the terminal equipment adds the time slot K to a period (such as a resource reservation period), and determines the added time slot as the time slot in the M selected time slots Gap.
  • the above M is greater than or equal to the parameter D in the resource pool configuration.
  • the terminal device determines the time slot corresponding to SR*Ps and [SW, S) as the listening time slot corresponding to the M selected time slots.
  • the time slot S is any one of the M selected time slots, and Ps is each period in the resource reservation period set in the resource pool configuration used by the terminal device.
  • R is the smallest positive integer that makes SR*Ps before the reference time point.
  • the reference time point is TT proc,0 -T proc,1 .
  • T is the first time slot in the time domain among the M selected time slots.
  • T proc,0 and T proc,1 please refer to the background art.
  • W is 31 logical time slots.
  • the terminal device selects resources 1, 2, and 3 based on partial interception in time slot n.
  • sending resource 1 it gives up the transmission on resource 1 due to conflict with the uplink service.
  • resources 5 and 6 are indicated by using the resource reservation period field in the first side line control information.
  • the terminal device executes the Re-evaluation mechanism on the target resource 4 at mT 3 , the target resource 4 is located in time slot m, and T 3 is T proc,1 .
  • the terminal device determines the resource selection window and the resource listening window, and according to the unlistened time slots and/or listening results in the listening time slots in the resource listening window, performs Excluded to construct a set of candidate resources.
  • Step 1 limit the resource selection window in the above introduction to the selection time slot in the resource selection window, and limit the resource listening window in the above introduction to the interception in the resource listening window Listen to time slots. If the target resource 4 is not in the candidate resource set, the terminal device reselects the target resource 4 in the candidate resource set, that is, the remaining resources not excluded in the selection time slot. Optionally, depending on the implementation of the terminal device, the terminal device may also reselect any one or more unindicated time-frequency resources in the candidate resource set.
  • FIG. 11 shows a block diagram of a resource reselection device provided by an embodiment of the present application.
  • the device has the function of realizing the above method example, and the function may be realized by hardware, or may be realized by executing corresponding software by hardware.
  • the device may be the terminal device described above, or it may be set on the terminal device.
  • the apparatus 1100 may include: a determination module 1110 , an exclusion module 1120 and a selection module 1130 .
  • a determining module 1110 configured to determine a target selection time slot and a target listening time slot.
  • the exclusion module 1120 is configured to exclude the available resources in the target selection time slot according to the unlistened time slots in the target listening time slot and/or the listening results, to obtain a candidate resource set.
  • the selection module 1130 is configured to select a second resource to replace the first resource from the set of candidate resources under the condition that the first resource is determined to be reselected.
  • the target selection time slot satisfies at least one of the following conditions:
  • the target selection time slot includes at least M time slots, M is greater than or equal to D, and D is specified by network configuration or pre-configuration or standard or depends on the implementation of the terminal device;
  • the target selection time slot is determined according to the first selection time slot, and the first selection time slot includes the selection time slot determined by the terminal device for initial resource selection or initial resource reselection or resource selection or resource reselection;
  • the target selection time slot is determined according to the second selection time slot, and the second selection time slot includes the selection time slot determined by the terminal device for a previous cycle.
  • the target selection time slot is determined by adding the first selection time slot to a period of W times; or, the target selection time slot at least includes the phase of the first selection time slot and a period of W times Add the determined time slot; where, W is a positive integer.
  • the target selection time slot is determined by adding the second selection time slot and a cycle; or, the target selection time slot includes at least the time slot determined by adding the second selection time slot and a cycle .
  • the period is a resource reservation period of the terminal device.
  • the target selection time slot is a selection time slot determined for an F-th cycle after initial resource selection or initial resource reselection or resource selection or resource reselection, where F is greater than 1.
  • the target listening time slot includes at least one of the following:
  • At least one listening time slot determined based on the target selection time slot and at least one resource reservation period; wherein the at least one resource reservation period includes all or Partial resource reservation period;
  • At least one listening time slot from the second time slot to the first time slot; wherein the second time slot is located in the first time slot before the time slot.
  • the listening time slot determined based on the time slot S and the at least one resource reservation period is a time slot S-R*Ps, and Ps is the time slot S-R*Ps.
  • the above at least one resource reservation period, R is a positive integer.
  • different resource reservation periods correspond to the same value of R; or, there are at least two different resource reservation periods corresponding to different values of R.
  • R is the minimum value that makes the listening time slot before a reference time point
  • the reference time point is determined according to time slot T
  • the time slot T is the time domain position in the target selection time slot. earlier time slot.
  • the target resource selection period corresponds to multiple values of R.
  • the first resource is a resource indicated by the terminal device, or the first resource is a resource not indicated by the terminal device.
  • the determining module 1110 is further configured to determine a resource selection window and a resource listening window.
  • the exclusion module 1120 is configured to exclude the available resources in the second period according to the unheard time slots and/or the interception results in the first period to obtain the candidate resource set.
  • the first time period is the intersection of the resource listening window and the target listening time slot
  • the second time period is the intersection of the resource selection window and the target selection time slot.
  • the selecting module 1130 is further configured to determine to reselect the first resource when the first resource is not in the candidate resource set.
  • the terminal device when the terminal device performs partial interception and performs semi-persistent transmission or periodic transmission, if the Pre-emption mechanism is executed to determine that the resource is preempted, or the Re-evaluation mechanism is executed Determine resource conflicts, trigger resource reselection, avoid resource collisions, and improve communication reliability.
  • the device provided by the above embodiment realizes its functions, it only uses the division of the above-mentioned functional modules as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • FIG. 12 shows a structural block diagram of a terminal device 120 provided by an embodiment of the present application.
  • the terminal device 120 can be used to execute the above resource reselection method.
  • the terminal device 120 may include: a processor 121 , a receiver 122 , a transmitter 123 , a memory 124 and a bus 125 .
  • the processor 121 includes one or more processing cores, and the processor 121 executes various functional applications and information processing by running software programs and modules.
  • the receiver 122 and the transmitter 123 can be implemented as a transceiver 126, and the transceiver 126 can be a communication chip.
  • the memory 124 is connected to the processor 121 through the bus 125 .
  • the memory 124 may be used to store a computer program, and the processor 121 is used to execute the computer program, so as to implement various steps performed by the terminal device in the foregoing method embodiments.
  • memory 124 can be realized by any type of volatile or nonvolatile storage device or their combination, and volatile or nonvolatile storage device includes but not limited to: RAM (Random-Access Memory, random access memory) And ROM (Read-Only Memory, read-only memory), EPROM (Erasable Programmable Read-Only Memory, erasable programmable read-only memory), EEPROM (Electrically Erasable Programmable Read-Only Memory, electrically erasable programmable read-only memory memory), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory, CD-ROM), DVD (Digital Video Disc, high-density digital video disc) or other optical storage, tape cartridges, tapes, disks storage or other magnetic storage devices.
  • RAM Random-Access Memory, random access memory
  • ROM Read-Only Memory, read-only memory
  • EPROM Erasable Programmable Read-Only Memory, erasable programmable read-only memory
  • EEPROM Electrically Eras
  • the processor 121 is configured to:
  • selecting a second resource for replacing the first resource from the set of candidate resources In a case where it is determined to reselect the first resource already selected by the terminal device, selecting a second resource for replacing the first resource from the set of candidate resources.
  • the target selection time slot satisfies at least one of the following conditions:
  • the target selection time slot includes at least M time slots, M is greater than or equal to D, and D is specified by network configuration or pre-configuration or standard or depends on the implementation of the terminal device;
  • the target selection time slot is determined according to the first selection time slot, and the first selection time slot includes the selection time slot determined by the terminal device for initial resource selection or initial resource reselection or resource selection or resource reselection;
  • the target selection time slot is determined according to the second selection time slot, and the second selection time slot includes the selection time slot determined by the terminal device for a previous period.
  • the target selection time slot is determined by adding the first selection time slot to a period of W times; or, the target selection time slot at least includes the phase of the first selection time slot and a period of W times Add the determined time slot; where, W is a positive integer.
  • the target selection time slot is determined by adding the second selection time slot and a cycle; or, the target selection time slot includes at least the time slot determined by adding the second selection time slot and a cycle .
  • the period is a resource reservation period of the terminal device.
  • the target selection time slot is a selection time slot determined for an F-th cycle after initial resource selection or initial resource reselection or resource selection or resource reselection, where F is greater than 1.
  • the target listening time slot includes at least one of the following:
  • At least one listening time slot determined based on the target selection time slot and at least one resource reservation period; wherein the at least one resource reservation period includes all or Partial resource reservation period;
  • At least one listening time slot from the second time slot to the first time slot; wherein the second time slot is located in the first time slot before the time slot.
  • the listening time slot determined based on the time slot S and the at least one resource reservation period is a time slot S-R*Ps, and Ps is the time slot S-R*Ps.
  • the above at least one resource reservation period, R is a positive integer.
  • different resource reservation periods correspond to the same value of R; or, there are at least two different resource reservation periods corresponding to different values of R.
  • R is the minimum value that makes the listening time slot before a reference time point
  • the reference time point is determined according to time slot T
  • the time slot T is the time domain position in the target selection time slot. earlier time slot.
  • the target resource selection period corresponds to multiple values of R.
  • the first resource is a resource indicated by the terminal device, or the first resource is a resource not indicated by the terminal device.
  • the processor 121 is further configured to:
  • the first time period is the intersection of the resource listening window and the target listening time slot
  • the second time period is the intersection of the resource selection window and the target selection time slot.
  • the processor 121 is further configured to determine to reselect the first resource when the first resource is not in the candidate resource set.
  • the embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a terminal device, so as to implement the above resource reselection method.
  • the computer-readable storage medium may include: ROM (Read-Only Memory, read-only memory), RAM (Random-Access Memory, random access memory), SSD (Solid State Drives, solid state drive) or an optical disc, etc.
  • the random access memory may include ReRAM (Resistance Random Access Memory, resistive random access memory) and DRAM (Dynamic Random Access Memory, dynamic random access memory).
  • the embodiment of the present application also provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip is run on a terminal device, it is used to implement the above resource reselection method.
  • the embodiment of the present application also provides a computer program product or computer program, the computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and the processor of the terminal device reads from the computer The readable storage medium reads and executes the computer instructions to implement the resource reselection method above.
  • the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.
  • the "plurality” mentioned herein means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently.
  • the character “/” generally indicates that the contextual objects are an "or” relationship.
  • the numbering of the steps described herein only exemplarily shows a possible sequence of execution among the steps.
  • the above-mentioned steps may not be executed according to the order of the numbers, such as two different numbers
  • the steps are executed at the same time, or two steps with different numbers are executed in the reverse order as shown in the illustration, which is not limited in this embodiment of the present application.
  • the functions described in the embodiments of the present application may be implemented by hardware, software, firmware or any combination thereof.
  • the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage media may be any available media that can be accessed by a general purpose or special purpose computer.

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PCT/CN2021/104587 2021-07-05 2021-07-05 资源重选方法、装置、设备及存储介质 Ceased WO2023279247A1 (zh)

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PCT/CN2021/104587 WO2023279247A1 (zh) 2021-07-05 2021-07-05 资源重选方法、装置、设备及存储介质
JP2023580872A JP7759413B2 (ja) 2021-07-05 2021-09-23 リソース再選択方法、装置、機器および記憶媒体
CN202311831114.6A CN117750511A (zh) 2021-07-05 2021-09-23 资源重选方法、装置、设备及存储介质
PCT/CN2021/119916 WO2023279536A1 (zh) 2021-07-05 2021-09-23 资源重选方法、装置、设备及存储介质
CN202180095875.2A CN117044335A (zh) 2021-07-05 2021-09-23 资源重选方法、装置、设备及存储介质
EP21949024.0A EP4346303A4 (en) 2021-07-05 2021-09-23 METHOD AND APPARATUS FOR RESOURCE RE-SELECTION, DEVICE AND STORAGE MEDIUM
KR1020247001039A KR20240027690A (ko) 2021-07-05 2021-09-23 자원 재선택 방법, 장치, 기기 및 저장 매체
US18/399,649 US20240231950A9 (en) 2021-07-05 2023-12-28 Resource reselection method and apparatus, device, and storage medium

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