WO2020191769A1 - Procédé de transmission de canal de liaison latérale, et dispositif terminal - Google Patents

Procédé de transmission de canal de liaison latérale, et dispositif terminal Download PDF

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Publication number
WO2020191769A1
WO2020191769A1 PCT/CN2019/080249 CN2019080249W WO2020191769A1 WO 2020191769 A1 WO2020191769 A1 WO 2020191769A1 CN 2019080249 W CN2019080249 W CN 2019080249W WO 2020191769 A1 WO2020191769 A1 WO 2020191769A1
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WIPO (PCT)
Prior art keywords
resource
terminal device
threshold
channel
candidate
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PCT/CN2019/080249
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English (en)
Chinese (zh)
Inventor
赵振山
卢前溪
林晖闵
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Priority to PCT/CN2019/080249 priority Critical patent/WO2020191769A1/fr
Priority to CN201980073753.6A priority patent/CN112997551B/zh
Publication of WO2020191769A1 publication Critical patent/WO2020191769A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal

Definitions

  • This application relates to the field of communications, and in particular to a method and terminal equipment for transmitting a side channel.
  • V2X vehicle-to-everything
  • mode 1 is that the network allocates transmission resources for the terminal
  • mode 2 is that the terminal selects transmission resources.
  • the terminal is supported to obtain available transmission resources through listening.
  • PSSCH Physical Sidelink Shared Channel
  • SLSS Sidelink Synchronization Signal
  • PSBCH Physical Sidelink Broadcast Channel
  • the present application provides a method and terminal device for transmitting a side channel, which can avoid resource waste.
  • a method for transmitting a side channel which includes: after excluding at least one candidate resource in a first resource set, a first terminal device obtains a second resource set, and the first resource set includes multiple candidate resources. Resource, each candidate resource in the plurality of candidate resources can be used to send the first side row channel; the first terminal device determines the target resource in the second resource set; the first terminal device uses the target resource to send The first side row channel.
  • a terminal device which is used to execute the method in the first aspect or its implementation manners.
  • the terminal device includes a functional module for executing the method in the foregoing first aspect or each implementation manner thereof.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned first aspect or each of its implementation modes.
  • a chip which is used to implement any one of the above-mentioned first aspects or the methods in each implementation manner thereof.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that a device installed with the chip executes any one of the above-mentioned first aspects or the methods in each implementation manner thereof.
  • a computer-readable storage medium for storing a computer program that enables a computer to execute the method in the first aspect or its implementation manners.
  • a computer program product including computer program instructions, which cause a computer to execute the method in the first aspect or its implementation manners.
  • a computer program which when running on a computer, causes the computer to execute the method in the first aspect or its implementation manners.
  • the terminal device excludes part of the candidate resources from the resource set including multiple candidate resources, which can avoid resource overlap and resource waste. For example, exclude resources that overlap with S-SSB to avoid conflicts between PSSCH transmission resources and S-SSB transmission resources; in the resource selection window, exclude resources that overlap with resources reserved by other terminals to avoid conflicts with other resources. Conflict between the transmission resources of the terminal; in the resource selection window, resources that conflict with the S-SSB in the current or future N cycles are excluded to avoid conflicts between PSSCH transmission resources and S-SSB transmission resources, which is suitable for cycles Selection of resources for sex business.
  • Fig. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • Fig. 2 is a schematic diagram of a side link transmission provided by an embodiment of the present application.
  • Fig. 3 is a schematic diagram of excluding resources in a selection window provided by an embodiment of the present application.
  • Fig. 4 is a schematic diagram of the division of resource pools provided by an embodiment of the present application.
  • Fig. 5 is a schematic diagram of an S-SSB provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a method for transmitting a side channel according to an embodiment of the present application.
  • Fig. 7 is another schematic diagram of excluding resources in a selection window provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of resource overlap provided by an embodiment of the present application.
  • Fig. 9 is another schematic diagram of excluding resources in a selection window provided by an embodiment of the present application.
  • FIG. 10 is another schematic diagram of excluding resources in a selection window provided by an embodiment of the present application.
  • FIG. 11 is another schematic diagram of excluding resources in a selection window provided by an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a way of dividing a resource pool provided by an embodiment of the present application.
  • FIG. 13 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 14 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • FIG. 15 is a schematic block diagram of a chip provided by an embodiment of the present application.
  • FIG. 16 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GSM Global System of Mobile Communication
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • LTE Long Term Evolutional Node B
  • eNB evolved base station
  • CRAN Cloud Radio Access Network
  • the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches
  • the communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110.
  • the "terminal equipment” used here includes but is not limited to connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber lines (Digital Subscriber Line, DSL), digital cables, and direct cable connections ; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device that is set to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • PSTN public switched telephone networks
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL
  • a terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellites or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio phone transceivers Electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • direct terminal connection (Device to Device, D2D) communication may be performed between the terminal devices 120.
  • the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.
  • NR New Radio
  • Figure 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices.
  • the communication device may include a network device 110 and a terminal device 120 with communication functions, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here.
  • the communication device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the application.
  • the Internet of Vehicles system is based on a D2D sidelink (Sidelink, SL) transmission technology. It is different from the traditional LTE system in which communication data is received or sent through the base station.
  • the Internet of Vehicles system uses direct terminal-to-terminal communication. Therefore, it has higher spectral efficiency and lower transmission delay.
  • FIG. 2 shows a schematic diagram of two transmission modes in the Internet of Vehicles system according to an embodiment of the present application.
  • the pattern 3 on the left indicates that the transmission resources of the vehicle-mounted terminal are allocated by the base station through the downlink (DL), and the vehicle-mounted terminal transmits data on the SL according to the resources allocated by the base station; the base station can A single transmission resource is allocated to a vehicle-mounted terminal, and a semi-static transmission resource can also be allocated to a vehicle-mounted terminal.
  • the mode 4 on the right indicates that the vehicle-mounted terminal uses sensing and reservation transmission methods to transmit the SL.
  • the vehicle-mounted terminal obtains a set of available transmission resources in the resource pool by means of interception, and the vehicle-mounted terminal randomly selects a resource from the set for data transmission. Because the services in the Internet of Vehicles system have periodic characteristics, the vehicle-mounted terminal usually adopts a semi-static transmission method, that is, after the vehicle-mounted terminal selects a transmission resource, it will continue to use the resource in multiple transmission cycles, thereby reducing resource repetition. Selection and the probability of resource conflicts.
  • the vehicle-mounted terminal will carry the information to reserve resources for the next transmission in the control information of this transmission, so that other vehicle-mounted terminals can determine whether this resource is reserved and used by the user by detecting the control information of the user, so as to reduce resources The purpose of the conflict.
  • the terminal selects transmission resources from the set of candidate resources through interception.
  • the process of interception and resource selection will be briefly described below in conjunction with Figure 3.
  • Figure 3 shows a schematic diagram of listening and resource selection. For each sidelink process, as shown in Figure 3, assuming that a new data packet arrives at time n, resource selection is required for data transmission.
  • the terminal can first determine that the range of the resource selection window is [n+T1,n+T2], and the terminal listens in the listening window [n-1000,n-1], and then according to the listening window in the listening window As a result, resources are selected in the selection window. It is assumed here that T1 ⁇ 4; 20 ⁇ T2 ⁇ 100.
  • the process of the terminal selecting resources in the selection window can refer to the operation steps in 3GPP TS36.213. Here, only a few main resource selection steps are described as examples. Assuming that the terminal regards all available resources in the selection window as a set A, the terminal can perform the following exclusion operations on the resources in the set A.
  • the terminal has no listening result in some subframes in the listening window, for example, if the terminal sends data on a certain subframe, the terminal has no listening result on this subframe, for example, the listening in Figure 3
  • the white dashed blocks in the window can be subframes without listening results, then after these subframes K cycles (for example, after one cycle in Figure 3), the resources on the corresponding subframes in the selection window need to be excluded It means to exclude the black squares in the selection window in Figure 3.
  • PSCCH Physical Sidelink Control Channel
  • RSRP PSSCH-Receiving Power
  • RSRP reference signal receiving power
  • the terminal will increase the PSSCH-RSRP threshold, for example, it can increase 3dB, and repeat the above steps 1 and 2 until there are remaining in set A
  • the number of resources is greater than or equal to 20% of the total number of resources in the selection window.
  • the terminal performs Sidelink Received Signal Strength Indication (S-RSSI) detection on the remaining resources in set A, and sorts them according to energy level, and selects the resources that are not excluded in the selection window The 20% resources with the lowest energy (20% of the total resources) are put into set B.
  • S-RSSI Sidelink Received Signal Strength Indication
  • the terminal selects a resource from set B for data transmission. For example, the terminal can select randomly with equal probability.
  • the above-mentioned listening and resource selection are performed in the PSCCH or PSSCH resource pool.
  • the PSSCH transmission resource and the PSCCH transmission resource are in a one-to-one correspondence, so the PSSCH transmission resource is determined.
  • the corresponding PSCCH transmission resources are determined.
  • SLSS and PSBCH occupy one subframe, but the subframe used to transmit SLSS/PSBCH is not included in the PSSCH resource pool.
  • each small rectangular square represents a subframe in the time domain, where SLSS/PSBCH occupies 6 Physical Resource Block (PRB) and one subframe, which is not included in PSCCH/ PSSCH resource pool.
  • PRB Physical Resource Block
  • the SLSS/PSBCH occupies the frequency domain resources in the middle of the bandwidth, and the idle resources on both sides are not used for transmitting sideline data.
  • mode 1 is the network allocates transmission resources for the terminal (similar to mode 3 in LTE-V2X), and mode 2 is the terminal selection Transmission resources.
  • mode 2 is the terminal selection Transmission resources.
  • the terminal is supported to obtain available transmission resources through listening.
  • FIG. 5 shows a schematic diagram of an S-SSB.
  • an S-SSB may include a side-line primary synchronization signal (S-PSS) and a side-line secondary synchronization signal. (Sidelink Secondary Synchronization Signal, S-SSS) and PSBCH.
  • S-PSS side-line primary synchronization signal
  • S-SSS Sidelink Secondary Synchronization Signal
  • PSBCH PSBCH
  • the bandwidth of the system can support hundreds of megahertz (MHz). If the same method as LTE-V2X is adopted, that is, the PSSCH resource pool does not include the subframe (or time slot, or Time domain symbols), will cause waste of resources, because SLSS transmission usually has a relatively narrow bandwidth. For example, if a carrier of NR-V2X includes a 100MHz bandwidth, 20MHz of which is used to transmit SLSS, and if the SLSS subframe is excluded from the PSSCH resource pool, the remaining 80MHz in the SLSS subframe cannot be used to transmit PSSCH. Lead to waste of resources. If the time domain resources where the SLSS is located are included in the PSSCH resource pool, how to perform interception and resource selection at this time is a problem to be solved urgently.
  • the embodiment of the present application proposes a method 200 for transmitting the side channel, which can select resources for transmitting the side channel in the resource pool, and avoid resource waste.
  • FIG. 6 is a schematic flowchart of a method 200 for transmitting a side channel according to an embodiment of the application.
  • the method 200 may be executed by a terminal device.
  • the terminal device is referred to as a first terminal device.
  • the first terminal device may refer to any terminal device that supports sideline data transmission.
  • the terminal device may be as shown in FIG. 1
  • Any one of the terminal devices may also be any one of the terminal devices shown in Figure 2.
  • the method 200 includes: S210. After excluding at least one candidate resource in the first resource set, the first terminal device obtains a second resource set.
  • the first resource set includes multiple candidate resources. Each of the candidate resources can be used to send the first side channel; S220, the first terminal device determines the target resource in the second resource set; S230, the first terminal device uses the target resource to send The first side row channel.
  • the sending of the sideline channel may refer to sending the data carried by the sideline channel.
  • the receiving of the sideline channel in the embodiment of the present application may refer to receiving the data carried by the sideline channel.
  • the method 200 further includes: the first terminal device determines a first resource set.
  • FIG. 7 shows a schematic diagram of a listening window and a selection window according to an embodiment of the present application, as shown in FIG. As shown, it is assumed here that a new data packet arrives at the first terminal device at time n, and resource selection is required for side channel transmission. Then the first terminal device can determine that the time domain range of the first resource set is a time slot (or subframe) [n+T1, n+T2], that is, the range of the resource selection window in FIG. 7 [n+T1, n+T2], where T1 and T2 are both integers greater than 0.
  • the value of T1 and/or T2 may be independently selected by the terminal device, that is, the method 200 may further include: the first terminal device determines the first terminal device according to the service attribute of the data carried by the first side channel The size of the resource collection.
  • the service attributes of the data carried by the first side channel may include at least one of the following attributes: priority, reliability, delay, transmission rate, QoS class identifier (QCI), QoS flow Identifier (QoS Flow Identifier, QFI) and PC5 interface QoS index (PC5 QoS Index, PQI).
  • the first terminal device may select T2 according to the attributes or requirements of the service of the data carried by the side channel, for example, select T2 according to the latency requirement of the service, and T2 is less than or equal to the latency requirement of the service, for example, as shown in Figure 7 T2 is 100 time slots.
  • the method 200 further includes: the terminal device determines a plurality of candidate resources in the first resource set, wherein each candidate resource in the plurality of candidate resources can be used to transmit the first side row channel, and the first side row channel It is any side channel for transmission between the first terminal device and other terminal devices.
  • the first terminal device may use all the transmission resources in the resource selection window as available candidate resources.
  • the first terminal device may divide a plurality of candidate resources in the first resource set according to the size of the resources occupied by the first side row channel, where each candidate resource may be used to transmit the first side row channel.
  • the side row data corresponding to the side row channel to be transmitted needs to occupy 1 time slot and 10 PRBs, and each candidate resource is a transmission resource block occupying 1 time slot and 10 PRBs.
  • the first terminal device after excluding at least one candidate resource in the first resource set, obtains a second resource set, that is, the second resource set is a subset of the first resource set.
  • the first terminal device may adopt one or more methods to exclude at least one candidate resource from the first resource set, where the at least one candidate resource may include resources that overlap with other resources.
  • the at least one candidate resource may include resources that overlap with the resources occupied by the S-SSB.
  • the black squares in the selection window shown in FIG. 7 indicate the resources occupied by the S-SSB, and the at least one candidate resource may It includes candidate resources that partially overlap with the black square; in addition, the at least one candidate resource may also include resources that overlap with the PSSCH or PSCCH occupied resources of other terminal devices.
  • the at least one candidate resource may include a candidate resource that partially overlaps the white dashed square.
  • the at least one candidate resource may include a first candidate resource, and the first candidate resource overlaps with the resource occupied by the S-SSB, where the resource overlapped with the resource occupied by the S-SSB
  • the first candidate resource may refer to any one or more resources that overlap with the resources occupied by the S-SSB.
  • the candidate transmission resource is dropped, that is, the first candidate resource is excluded from the first resource set.
  • the S-SSB in the embodiment of the present application may include S-PSS, S-SSS, and PSBCH.
  • the S-SSB may be the S-SSB as shown in FIG. 5, which is not repeated here for brevity.
  • the overlap between the first candidate resource and the resources occupied by the S-SSB in the embodiment of the present application may refer to complete overlap or partial overlap, and the overlap may include time domain overlap and/or frequency domain overlap.
  • the description is given here by taking the overlap of the first candidate resource and the resource occupied by the S-SSB as an example.
  • FIG. 8 shows a schematic diagram of resource overlap in an embodiment of the present application, where the solid line boxes in the two figures (a) and (b) in FIG. 8 represent the first resource set.
  • the diagonal squares represent the resources occupied by the S-SSB, and the candidate resource 1 in the first resource set and the resources occupied by the S-SSB are partially in the frequency domain.
  • the first terminal device can determine that the candidate resource 1 overlaps with the resource occupied by the S-SSB, and then exclude the candidate resource 1 from the first resource set, that is, the first candidate resource includes the candidate Resource 1.
  • the diagonal squares represent the resources occupied by the S-SSB, and the candidate resource 2 in the first resource set and the resources occupied by the S-SSB are in frequency.
  • the domain overlaps partially, and there is also partial overlap in the time domain (for example, candidate resource 2 occupies one time slot and S-SSB occupies 4 time domain symbols), then the first terminal device can determine that candidate resource 2 and S-SSB occupy If the resources overlap, the candidate resource 2 is excluded from the first resource set, that is, the first candidate resource includes the candidate resource 2.
  • the resources occupied by the S-SSB are located in the first resource set, which results in overlap with candidate resources in the first resource set, thereby eliminating the overlapping first candidate resources.
  • the S-SSB is periodically transmitted, it is also necessary to eliminate the possibility of resource overlap that may occur after multiple cycles.
  • the at least one candidate resource may also include a second candidate resource, and the second candidate resource is in N There is at least one overlap with the resources occupied by the S-SSB in the transmission period, where N is a positive integer. Similar to the first candidate resource, the second candidate resource may also be one or more resources. For brevity, details are not repeated here.
  • the transmission resource will be reserved.
  • the second candidate resource in the first resource set that is, the second candidate resource can be any candidate resource in the resource selection window, assuming that the second candidate resource is used to transmit the periodic service carried by the first side channel .
  • the terminal device will continue to use the resource corresponding to the second candidate resource to transmit the periodic service in the next N cycles according to the cycle of the service. In these N transmission cycles, if there is at least one transmission with the S-SSB If the resources overlap, the terminal device excludes the second candidate transmission resource from the first resource set.
  • FIG. 9 shows a schematic diagram of S-SSB and side channel that are periodically transmitted.
  • the range of the first resource set is time slot [n+1, n+100]
  • the range of the resource selection window is time slot [n+1, n+100].
  • Candidate resources assuming that the resource at time n+k is the second candidate resource, that is, the white dotted square in the selection window, if the first terminal device selects the second candidate resource for side-line data transmission, and the terminal device’s
  • the value N is a positive integer, and the value N may be determined by the first terminal device.
  • the value N may be a preset value; or, the value N may be determined by the first terminal device in a preset set, where the preset set is a range of values, and the first terminal device is within the range of values. Select a value as the value N; or, the value N may also be determined by the first terminal device according to configuration information sent by the network, for example, the network device is configured with a parameter range, and the first terminal device selects from the parameter range A value is used as the value N; or, the value N may be randomly selected by the first terminal device.
  • resources that conflict with the S-SSB in the current or future N cycles are excluded in the resource selection window to avoid conflicts between PSSCH transmission resources and S-SSB transmission resources; Selection of resources suitable for periodic business.
  • the at least one candidate resource further includes a third candidate resource, and the third candidate resource overlaps the first transmission resource, where the first transmission resource is reserved for use by the second terminal device.
  • the second side row transmission channel may be a PSCCH, a PSSCH, or a physical side link feedback channel (PSFCH).
  • the first terminal device may determine the reserved resource of the second terminal device in multiple ways. For example, the first terminal device may detect the sidelink control information (SCI) of the second terminal device in the listening window to determine the reserved resources of the second terminal device, that is, the second terminal device The first transmission resource.
  • SCI sidelink control information
  • the method 200 may further include: the first terminal device receives the SCI of the second terminal device, the SCI is carried in the PSCCH channel, the SCI includes first indication information, and the first indication information is used to indicate the second terminal device.
  • the second terminal device reserves the first transmission resource. For example, as shown in FIG. 10, the range of the listening window determined by the first terminal device is [n-1, n-1000]. If the first terminal device detects the SCI of the second terminal device in the listening window, the SCI includes first indication information indicating that the first indication information in the selection window (that is, the first resource set) is reserved A transmission resource (that is, the white dotted square in the selection window in FIG. 10) is used to transmit the PSSCH of the second terminal device, then the first terminal device can exclude the third candidate resource in the first resource set, and the third candidate resource is A resource overlapping with the first transmission resource of the second terminal device.
  • the first terminal device may also detect the PSCCH-RSRP of the PSCCH carrying the SCI and compare it with the first threshold. If the PSCCH-RSRP is greater than or equal to the first threshold, the first terminal device is in the first resource set The third candidate resource that overlaps with the first transmission resource is excluded from within.
  • the SCI may further include second indication information indicating a second transmission resource for transmitting the third side channel of the second terminal device, where the second transmission resource is not located in the time domain.
  • the first resource set is located before the first resource set.
  • the range of the listening window determined by the first terminal device is a time slot [n-1, n-1000]. If the first terminal device detects the SCI of the second terminal device in the listening window, the SCI includes first indication information and second indication information, where the second indication information indicates that the second transmission resource transmits the second terminal device
  • the PSSCH is the white square in the listening window in Fig. 11; and the first indication information indicates that the first transmission resource in the selection window (that is, the first resource set) is reserved (that is, the white dashed line in the selection window in Fig.
  • the first transmission resource can be used to transmit the PSSCH retransmission data of the second terminal device, or the first transmission resource can be used to transmit the PSSCH of the next period of the periodic service, then the first terminal
  • the device may exclude the third candidate resource in the first resource set, where the third candidate resource is a resource overlapping with the first transmission resource reserved by the second terminal device.
  • the first terminal device may also detect the PSSCH-RSRP of the PSSCH on the second transmission resource, and compare it with the second threshold, and if the PSSCH-RSRP is greater than or equal to the second threshold, then compare it in the first resource set The third candidate resource that overlaps with the first transmission resource is eliminated.
  • the first terminal device may also detect the PSCCH-RSRP of the PSCCH carrying the SCI and compare it with the first threshold. If the PSCCH-RSRP is greater than or equal to the first threshold, the first terminal device is in the first resource set The third candidate resource that overlaps with the first transmission resource is excluded.
  • first threshold and/or second threshold may be determined in various ways.
  • the first threshold and/or the second threshold may be pre-configured.
  • the first threshold and/or the second threshold may be configured by a network device.
  • the first threshold and/or the second threshold may also be determined by the first terminal device according to related parameters, and the embodiment of the present application is not limited thereto.
  • the first threshold and/or the second threshold may be determined by the first terminal device according to at least one of the following methods: the first terminal device according to the priority of the data carried by the first side channel and / Or the priority carried in the side line control information, determine the first threshold and/or the second threshold; the first terminal device determines the first threshold and/or according to the channel occupancy ratio (CBR) The second threshold.
  • CBR channel occupancy ratio
  • the above priority can also be replaced with other parameters, such as reliability, delay, transmission rate, quality of service (Quality of Service, QoS) parameters, QCI, QFI, and PQI, etc., but the embodiment of the application is not limited thereto .
  • resources that overlap with resources reserved by other terminals are excluded in the resource selection window to avoid conflicts with transmission resources of other terminals, which can be applied to resource selection for periodic services or aperiodic services.
  • the first terminal device obtains a second resource set after excluding at least one candidate resource set from the first resource set through all or part of the above three embodiments; in S220, the first terminal device In the second resource set, the target resource is determined, so that in S230, the first terminal device uses the target resource to send the first side channel.
  • the first terminal device may use various methods to determine the target resource in the second resource set. For example, the first terminal device randomly determines the target resource in the second resource set with equal probability, but the embodiment of the present application is not limited to this.
  • resource overlap and resource waste can be avoided. For example, exclude resources that overlap with S-SSB to avoid conflicts between PSSCH transmission resources and S-SSB transmission resources; in the resource selection window, exclude resources that overlap with resources reserved by other terminals to avoid conflicts with other resources. Conflict between the transmission resources of the terminal; in the resource selection window, resources that conflict with the S-SSB in the current or future N cycles are excluded to avoid conflicts between PSSCH transmission resources and S-SSB transmission resources, which is suitable for cycles Selection of resources for sex business.
  • the embodiment of the present application also proposes another way of transmitting the side channel.
  • the terminal device divides the resource pool including the candidate resources, it can be considered to include the transmission resources occupied by the S-SSB (that is, the transmission resources of the S-SSB). ) And a resource pool that does not include S-SSB transmission resources, so that the terminal device can select a target resource from a resource pool that does not include S-SSB transmission resources, and use the target resource to transmit the side channel.
  • the candidate resources included in the candidate resource pool can be used by the terminal device to select the target resource for transmitting the side channel.
  • FIG. 12 shows the division of multiple resource pools. The schematic diagram of the method is shown in FIG. 12, and all the resources in this FIG. 12 may be candidate resources in the candidate resource pool configured by the network device.
  • the terminal device may divide the candidate resource pool into a first resource pool and a second resource pool according to the location of the transmission resources of the S-SSB in the candidate resource pool, wherein the first resource pool does not include the transmission occupied by the S-SSB Resources, and the second resource pool includes transmission resources occupied by the S-SSB.
  • description is made by taking the first resource pool as the first PSSCH resource pool and the second resource pool as the second PSSCH resource pool as an example.
  • the candidate resource pool configured by the network device for the terminal device includes the two resource pools, where the first PSSCH resource pool does not include S-SSB resources, and the second PSSCH resource pool includes S-SSB resources.
  • the method for dividing the first PSSCH resource pool and the second PSSCH resource pool included in the candidate resource pool may be as shown in FIG. 12.
  • the first PSSCH resource pool does not include S-SSB transmission resources, so there is no need to consider the influence of S-SSB transmission resources in the process of resource listening and resource selection; and the second PSSCH resource pool includes S-SSB transmission resources.
  • -SSB transmission resources so in the process of resource selection, it is necessary to consider avoiding conflicts with S-SSB transmission resources.
  • the subframe (or time slot) in which the S-SSB is located can also be directly excluded from the second PSSCH resource pool, that is, the second PSSCH resource pool does not include S -The subframe or time slot where the SSB is located, so that the configured PSSCH resource pool and the transmission resources of the S-SSB do not overlap, so there is no need to consider the transmission resources of the S-SSB in the process of resource listening and selection.
  • the influence of S-SSB transmission resources on resource selection is limited to a specific resource pool.
  • the terminal device does not need to consider S-SSB transmission The impact of resources.
  • the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, rather than corresponding to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the terminal device 300 includes: a processing unit 310 and a transceiver unit 320.
  • the processing unit 310 is configured to: after excluding at least one candidate resource in the first resource set, obtain a second resource set, the first resource set includes multiple candidate resources, and each candidate resource in the multiple candidate resources The resource can be used to send the first side channel; and, in the second resource set, a target resource is determined; the transceiver unit 320 is configured to use the target resource to send the first side channel.
  • the at least one candidate resource includes a first candidate resource, and the first candidate resource overlaps with a resource occupied by the S-SSB.
  • the first side row channel and the S-SSB are transmitted periodically, the at least one candidate resource includes a second candidate resource, and the second candidate resource exists at least once in N transmission periods.
  • the processing unit 310 is further configured to: determine the value N in a preset set; or, determine the value N according to configuration information sent by the network.
  • the S-SSB includes a side-line primary synchronization signal, a side-line secondary synchronization signal, and a physical side-line broadcast channel.
  • the at least one candidate resource includes a third candidate resource, and the third candidate resource overlaps with the first transmission resource, wherein the first transmission resource is reserved by the second terminal device for transmitting the first transmission resource.
  • the transceiver unit 320 is further configured to: receive side-line control information of the second terminal device, where the side-line control information includes first indication information, and the first indication information is used to indicate the second terminal device.
  • the second terminal device reserves the first transmission resource.
  • the reference signal received power of the physical side control channel carrying the side control information is greater than or equal to the first threshold.
  • the side row control information includes second indication information
  • the second indication information indicates a resource for transmitting a third side row channel
  • the reference signal received power of the third side row channel is greater than or equal to the first side row channel.
  • the first threshold and/or the second threshold are pre-configured; or, the first threshold and/or the second threshold are configured by the network device; or, the first threshold And/or the second threshold is determined by the processing unit 310 according to at least one of the following methods: determining the priority according to the priority of the data carried by the first side channel and/or the priority carried by the side control information The first threshold and/or the second threshold; and, according to the channel occupancy rate CBR, the first threshold and/or the second threshold are determined.
  • the overlap includes time domain resource and frequency domain resource overlap.
  • the processing unit 310 is further configured to: determine the size of the first resource set according to the service attribute of the data carried by the first side channel.
  • the service attribute of the data carried by the first side channel includes at least one of the following attributes: priority, reliability, delay, transmission rate, QCI, QFI, and PQI.
  • the processing unit 310 is further configured to: randomly determine the target resource in the second resource set.
  • terminal device 300 may correspond to the execution of the method 200 in the embodiment of the present application, and the above and other operations and/or functions of the various units in the terminal device 300 are respectively intended to implement FIGS. 1 to 12
  • the corresponding process of the terminal device in each method in the method will not be repeated here.
  • resource overlap and resource waste can be avoided. For example, exclude resources that overlap with S-SSB to avoid conflicts between PSSCH transmission resources and S-SSB transmission resources; in the resource selection window, exclude resources that overlap with resources reserved by other terminals to avoid conflicts with other resources. Conflict between the transmission resources of the terminal; in the resource selection window, resources that conflict with the S-SSB in the current or future N cycles are excluded to avoid conflicts between PSSCH transmission resources and S-SSB transmission resources, which is suitable for cycles Selection of resources for sex business.
  • FIG. 14 is a schematic structural diagram of a communication device 400 provided by an embodiment of the present application.
  • the communication device 400 shown in FIG. 14 includes a processor 410, and the processor 410 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 400 may further include a memory 420.
  • the processor 410 may call and run a computer program from the memory 420 to implement the method in the embodiment of the present application.
  • the memory 420 may be a separate device independent of the processor 410, or may be integrated in the processor 410.
  • the communication device 400 may further include a transceiver 430, and the processor 410 may control the transceiver 430 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 430 may include a transmitter and a receiver.
  • the transceiver 430 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 400 may specifically be a network device of an embodiment of the application, and the communication device 400 may implement the corresponding process implemented by the network device in each method of the embodiment of the application. For brevity, details are not repeated here. .
  • the communication device 400 may specifically be a mobile terminal/terminal device of an embodiment of the present application, and the communication device 400 may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application. For simplicity , I won’t repeat it here.
  • FIG. 15 is a schematic structural diagram of a chip of an embodiment of the present application.
  • the chip 500 shown in FIG. 15 includes a processor 510, and the processor 510 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 500 may further include a memory 520.
  • the processor 510 may call and run a computer program from the memory 520 to implement the method in the embodiment of the present application.
  • the memory 520 may be a separate device independent of the processor 510, or may be integrated in the processor 510.
  • the chip 500 may further include an input interface 530.
  • the processor 510 can control the input interface 530 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 500 may further include an output interface 540.
  • the processor 510 can control the output interface 540 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in the various methods of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the network device in the various methods of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip mentioned in the embodiment of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip.
  • FIG. 16 is a schematic block diagram of a communication system 600 according to an embodiment of the present application. As shown in FIG. 16, the communication system 600 includes a terminal device 610 and a network device 620.
  • the terminal device 610 can be used to implement the corresponding function implemented by the terminal device in the above method
  • the network device 620 can be used to implement the corresponding function implemented by the network device in the above method. For brevity, details are not repeated here. .
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • Synchlink DRAM SLDRAM
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application ,
  • the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application ,
  • I will not repeat it here.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For brevity, I won't repeat them here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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Abstract

La présente invention concerne, selon des modes de réalisation, un procédé de transmission d'un canal de liaison latérale, et un dispositif terminal. Le procédé comprend les étapes consistant à : après exclusion d'au moins une ressource candidate dans un premier ensemble de ressources, obtenir, par un premier dispositif terminal, un second ensemble de ressources, le premier ensemble de ressources comprenant une pluralité de ressources candidates, et chaque ressource candidate parmi la pluralité de ressources candidates pouvant être utilisée pour envoyer un premier canal de liaison latérale ; déterminer, par le premier dispositif terminal, dans le second ensemble de ressources, une ressource cible ; et utiliser, par le premier dispositif terminal, la ressource cible pour envoyer le premier canal de liaison latérale. Le procédé de transmission d'un canal de liaison latérale et le dispositif terminal selon les modes de réalisation de la présente invention permettent d'éviter le gaspillage des ressources.
PCT/CN2019/080249 2019-03-28 2019-03-28 Procédé de transmission de canal de liaison latérale, et dispositif terminal Ceased WO2020191769A1 (fr)

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CN201980073753.6A CN112997551B (zh) 2019-03-28 2019-03-28 传输侧行信道的方法和终端设备

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