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WO2020124353A1 - 侧行通信的方法和终端设备 - Google Patents

侧行通信的方法和终端设备 Download PDF

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Publication number
WO2020124353A1
WO2020124353A1 PCT/CN2018/121715 CN2018121715W WO2020124353A1 WO 2020124353 A1 WO2020124353 A1 WO 2020124353A1 CN 2018121715 W CN2018121715 W CN 2018121715W WO 2020124353 A1 WO2020124353 A1 WO 2020124353A1
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WO
WIPO (PCT)
Prior art keywords
reference signal
side reference
information
indication information
terminal device
Prior art date
Application number
PCT/CN2018/121715
Other languages
English (en)
French (fr)
Inventor
赵振山
卢前溪
林晖闵
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to EP18943607.4A priority Critical patent/EP3883142B1/en
Priority to BR112021011583-8A priority patent/BR112021011583A2/pt
Priority to CA3123967A priority patent/CA3123967A1/en
Priority to JP2021534174A priority patent/JP7213357B2/ja
Priority to CN201880097438.2A priority patent/CN112673582A/zh
Priority to PCT/CN2018/121715 priority patent/WO2020124353A1/zh
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to SG11202106213PA priority patent/SG11202106213PA/en
Priority to KR1020217018924A priority patent/KR102667634B1/ko
Priority to CN202110573605.XA priority patent/CN113316122B/zh
Publication of WO2020124353A1 publication Critical patent/WO2020124353A1/zh
Priority to US17/345,562 priority patent/US11405896B2/en
Priority to US17/827,477 priority patent/US11937239B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0033—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation each allocating device acting autonomously, i.e. without negotiation with other allocating devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/46—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H04L5/0082—Timing of allocation at predetermined intervals
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • Embodiments of the present application relate to the field of communications, and in particular, to a side communication method and terminal device.
  • the terminal can measure the channel based on some reference signals, and select appropriate transmission parameters according to the measurement results, for example, channel measurement according to the channel state information reference signal (Channel-State Information-Reference Signals, CSI-RS) , Select various quality information and feed it back to the sender, thereby improving the system throughput.
  • CSI-RS Channel State Information-Reference Signals
  • V2X Vehicle to Vehicle
  • Embodiments of the present application provide a side communication method and terminal device, which can implement transmission of a side reference signal on a side link, thereby improving the throughput of an IoV system.
  • a method for side communication includes: a first terminal device receives side link control information SCI sent by a second terminal device; and the first terminal device obtains a side according to the SCI Line reference signal information.
  • a method for side communication includes: a second terminal device side-linking control information SCI to a first terminal device, where the SCI is used by the first terminal device to obtain a side reference Signal information.
  • a terminal device for executing the method in the above-mentioned first aspect or various implementations thereof.
  • the terminal device includes a functional module for performing the method in any one of the above-mentioned first to second aspects or the respective implementations 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 any one of the first aspect to the second aspect or the various implementations thereof.
  • a chip is provided for implementing any one of the above-mentioned first to second aspects or the method in each implementation manner.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes any one of the above-mentioned first to second aspects or various implementations thereof method.
  • a computer-readable storage medium for storing a computer program that causes a computer to execute the method in any one of the above first to second aspects or various implementations thereof.
  • a computer program product including computer program instructions, which cause the computer to execute the method in any one of the above first to second aspects or in various implementations thereof.
  • a computer program which when run on a computer, causes the computer to execute the method in any one of the above first to second aspects or their respective implementations.
  • the first terminal device can obtain the information of the side reference signal based on the side link control information SCI sent by the second terminal device, thereby realizing the transmission of the side reference signal on the side link, Improve system throughput.
  • FIG. 1 is a schematic diagram of a side communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a side communication system provided by an embodiment of the present application.
  • FIG. 3 is a schematic block diagram of a method for side communication provided by an embodiment of the present application.
  • FIG. 4 is another schematic block diagram of a method for side communication provided by an embodiment of the present application.
  • FIG. 5 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 6 is another schematic block diagram of the terminal device provided by the embodiment of the present application.
  • FIG. 7 is another schematic block diagram of the terminal device provided by the embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a chip provided by an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • GSM Global System of Mobile
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code
  • GPRS General Packet Radio Service
  • LTE Frequency Division Duplex FDD
  • LTE time division duplex Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the technical solutions of the embodiments of the present application can be applied to various communication systems based on non-orthogonal multiple access technology, such as sparse code multiple access (Sparse Code Multiple Access, SCMA) system and low density signature (Low Density (Signature, LDS) system, etc.
  • SCMA Sparse Code Multiple Access
  • LDS Low Density
  • SCMA system and LDS system can also be called other names in the communication field;
  • technical solutions of the embodiments of the present application can be applied to multi-carrier using non-orthogonal multiple access technology Transmission system, such as Orthogonal Frequency Division Multiplexing (OFDM), Filter Bank Multi-Carrier (FBMC), Generalized Frequency Division Multiplexing (Generalized) Frequency Division Multiplexing (GFDM), Filtered-OFDM (F-OFDM) system, etc.
  • OFDM Orthogonal Frequency Division Multiplexing
  • FBMC Filter Bank Multi-Carrier
  • Generalized Frequency Division Multiplexing Generalized Frequency Division Multiplexing
  • GFDM Generalized Frequency Division Multiplexing
  • F-OFDM Filtered-OFDM
  • the terminal equipment in the embodiments of the present application may refer to user equipment (User Equipment), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless Communication equipment, user agent or user device.
  • Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital processing (Personal Digital Assistant (PDA), wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks or public land mobile communications networks (PLMN) in the future evolution Terminal equipment and the like are not limited in the embodiments of the present application.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • PLMN public land mobile communications networks
  • the network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may be a base station (Base Transceiver Station, BTS) in GSM or CDMA, or a base station (NodeB, NB in WCDMA system) ), it can also be an evolved base station (Evolutional NodeB, eNB or eNodeB) in the LTE system, it can also be a wireless controller in the cloud radio access network (Cloud Radio Access Network, CRAN) scenario, or the network equipment can be The relay station, the access point, the in-vehicle device, the wearable device, the network device in the future 5G network or the network device in the future evolved PLMN network, etc. are not limited in the embodiments of the present application.
  • FIG. 1 and 2 are schematic diagrams of an application scenario according to an embodiment of the present application.
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the wireless communication system may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area.
  • MME Mobile Management Entity
  • S-GW Serving Gateway
  • P-GW Packet Data Network Gateway
  • the embodiments of the present application are not limited to this.
  • the terminal device 20 and the terminal device 30 can communicate in a device-to-device (Device to Device, D2D) communication mode.
  • D2D communication the terminal device 20 and the terminal device 30 pass a D2D link, that is, a side link ( Sidelink (SL) communicates directly.
  • Sidelink (SL) Sidelink
  • the terminal device 20 and the terminal device 30 directly communicate through the side link.
  • the terminal device 20 and the terminal device 30 communicate through a side link, and transmission resources are allocated by the network device; in FIG. 2, the terminal device 20 and the terminal device 30 pass a side link.
  • the transmission resources are selected by the terminal equipment, and there is no need for the network equipment to allocate transmission resources.
  • the D2D communication mode can be applied to vehicle-to-vehicle (V2V) communication or vehicle-to-other equipment (Vehicle to Toverything, V2X) communication.
  • V2X communication X can refer to any device with wireless reception and transmission capabilities, such as but not limited to slow-moving wireless devices, fast-moving in-vehicle devices, or network control nodes with wireless transmission and reception capabilities.
  • the embodiment of the present application is mainly applied to the scenario of V2X communication, but can also be applied to any other D2D communication scenario, which is not limited in this embodiment of the present application.
  • LTE-V2X is standardized in Release-14 of the 3GPP protocol, and two transmission modes are defined, namely transmission mode 3 (mode 3) and transmission mode 4 (mode 4).
  • the transmission resources of the terminal equipment using the transmission mode 3 are allocated by the base station, and the terminal equipment transmits data on the side link according to the resources allocated by the base station; the base station can allocate the resources for a single transmission to the terminal equipment or can be the terminal
  • the device allocates semi-statically transmitted resources. If the terminal device using the transmission mode 4 has a listening capability, data is transmitted by means of sensing and reservation. If the terminal device does not have a listening capability, a transmission resource is randomly selected in the resource pool.
  • a terminal device with listening capability obtains a set of available resources in the resource pool by listening, and the terminal device randomly selects a resource from the set for data transmission. Because the services in the IoV system have periodic characteristics, the terminal device usually adopts a semi-static transmission method, that is, after the terminal device selects a transmission resource, it will continue to use the resource in multiple transmission cycles, thereby reducing resource re-use Selection and the probability of resource conflicts. The terminal device will carry the information for reserving the next transmission resource in the control information transmitted this time, so that other terminal devices can determine whether this resource is reserved and used by the terminal device by detecting the control information of the terminal device. The purpose of reducing resource conflicts.
  • Mode 1 is the network allocating transmission resources for the terminal (similar to mode 3 in LTE-V2X)
  • Mode 2 is the terminal selection Transmission resources, including but not limited to the following modes in Mode 2:
  • mode 2a The terminal autonomously selects transmission resources (similar to mode 4 in LTE-V2X); for example, the terminal autonomously selects resources in a pre-configured or network-configured resource pool (the resources can be selected in a random manner, or through listening Way to select resources).
  • the terminal assists other terminals in selecting resources; for example, the first terminal sends auxiliary information to the second terminal.
  • the auxiliary information may include but is not limited to: available time-frequency resource information, available transmission resource set information, channel measurement information and Channel quality information (such as channel state information (Channel State Information, CSI), channel quality indicator (Channel Quality Indicator, CQI), precoding matrix indicator (Precoding Matrix Indicator, PMI), rank indicator (RI), reference signal Received power (ReferenceSignalReceivingPower, RSRP), reference signal received quality (ReferenceSignalReceivingQuality, RSRQ), received signal strength indication (ReceivedSignalStrengthIndicator, RSSI), road loss information, etc.).
  • Channel State Information such as channel state information (Channel State Information, CSI), channel quality indicator (Channel Quality Indicator, CQI), precoding matrix indicator (Precoding Matrix Indicator, PMI), rank indicator (RI), reference signal Received power (ReferenceSignal
  • the terminal selects resources among the transmission resources configured for it; for example, the network configures multiple transmission resources for each terminal. When the terminal has side data transmission, it selects one transmission resource from the multiple transmission resources configured by the network Perform data transfer.
  • the first terminal allocates transmission resources for the second terminal; for example, the first terminal is the group head of the group communication, the second terminal is a member of the group, and the first terminal directly allocates the side terminal transmission for the second terminal Time-frequency resources.
  • NR-V2X In NR-V2X, it is necessary to support automatic driving, so it puts forward higher requirements for data interaction between vehicles, such as higher throughput, lower delay, higher reliability, greater coverage, More flexible resource allocation, etc.
  • the terminal can measure the channel and select appropriate transmission parameters according to the measurement results.
  • the channel measurement is performed according to the CSI-RS, and the CQI, PMI, RI and other information are selected and fed back to the sender.
  • the feedback information selects appropriate transmission parameters, thereby improving the throughput of the system.
  • FIG. 3 is a schematic block diagram of a side communication method 100 according to an embodiment of the present application.
  • the method may be performed by a terminal device as a receiving end in FIG. 1 or FIG. 2, as shown in FIG. 3, the method 100 includes some or all of the following:
  • the first terminal device receives the side link control information SCI sent by the second terminal device;
  • the first terminal device obtains the information of the side reference signal according to the SCI.
  • the second terminal device may indicate various information of the side reference signal to the first terminal device through side link control information (Sidelink Control Information, SCI), thereby enabling the first terminal device to obtain the side reference signal Information.
  • SCI Sidelink Control Information
  • Manner 1 Carrying the information of the side reference signal in the SCI, for example, carrying the resource indication information of the side reference signal in the SCI, the first terminal device can obtain the side according to the resource indication information of the side reference signal carried in the SCI Time-frequency resources of horizontal reference signals.
  • the SCI carries the indication information of whether the SCI includes the resource indication information of the side reference signal. For example, including 1 bit in the SCI, the bit being 0 indicates that the indication information of the side reference signal is not included in the SCI; the bit being 1 indicates that the resource indication information of the side reference signal is included in the SCI, at this time,
  • the SCI includes an indicator field for indicating resources of the side reference signal.
  • Method 3 Implicitly indicate the resource indication information of the side reference signal through the SCI.
  • the resource indication information of the side reference signal is indicated by a scrambling code sequence that scrambles the SCI.
  • the correspondence between the scrambling code sequence and the resource indication information of the side reference signal can be obtained through network configuration or protocol pre-configuration, and the correspondence can include the correspondence between multiple scrambling code sequences and multiple transmission resources, For example, when the first scrambling code sequence is used to scramble the SCI, it means that the side reference signal occupies the first transmission resource, and when the second scrambling code sequence is used to scramble the SCI, it means that the side reference signal occupies the second transmission resource.
  • a scrambling code sequence that scrambles the SCI indicates whether the SCI includes resource indication information of the side reference signal.
  • the correspondence between the scrambling code sequence and the indication information can be obtained through network configuration or protocol pre-configuration. For example, when the first scrambling sequence is used to scramble the SCI, the indication information indicates that the SCI includes resources of the side reference signal.
  • the indication information when the second scrambling code sequence is used to scramble the SCI, the indication information indicates that the SCI does not include resource indication information of the side reference signal.
  • Method 5 Indicate whether to include the resource indication information of the side reference signal in the SCI through the format of the SCI. For example, two SCI formats are pre-defined through the protocol. When the first SCI format is used, it indicates that the SCI includes the resource indication information of the side reference signal; when the second SCI format is adopted, the SCI does not include the side reference. Signal resource indication information.
  • the side reference signal may be any one of the following signals: side CSI-RS, side sounding reference signal (Sounding Reference), side signal (SRS), phase tracking reference signal (Phase Tracking Reference Signal) , PT-RS), demodulation reference signal (Demodulation Reference Signal, DMRS).
  • side CSI-RS side sounding reference signal
  • SRS side signal
  • phase tracking reference signal Phase Tracking Reference Signal
  • PT-RS phase Tracking Reference Signal
  • DMRS demodulation reference signal
  • the side reference signal may also be replaced with a side link channel. That is to say, the first terminal device receives the SCI sent by the second terminal device, and the first terminal device can obtain the side channel channel information according to the SCI.
  • the side link channel may be a physical side link feedback channel (Physical Side Link Feedback Channel, PSFCH).
  • the second terminal device may indicate various information of the side link channel to the first terminal device through the SCI, thereby enabling the first terminal device to obtain the side link channel information.
  • the instructions here can be implemented in the above-mentioned various ways, and for the sake of brevity, they will not be repeated here.
  • the resource indication information of the side reference signal and/or the side link channel may be directly carried in the SCI.
  • the SCI-RS resource indication information may be carried in the SCI
  • the PSFCH resource indication information may be carried in the SCI.
  • the SCI may include a first indication field.
  • the first indication field may be a time-frequency resource indicating a side reference signal or a time-frequency resource indicating a side link channel.
  • the first terminal device may first determine the resource indication information including the side reference signal in the SCI according to the first indication field included in the SCI and/or The resource indication information of the side link channel. For example, if the first terminal device determines that the first indication field indicates the time-frequency resource of the side reference signal, the first terminal device may further determine the time-frequency resource of the side reference signal according to the value of the first indication field .
  • the SCI may also carry indication information whether the resource indication information of the side reference signal and/or the resource indication information of the side link channel are included.
  • the SCI may include a fourth indication field, where the fourth indication field is used to indicate whether the SCI includes resource indication information of the side reference signal and/or resource indication of the side link channel information.
  • the first terminal device may first determine the resource indication information including the side reference signal in the SCI according to the value of the fourth indication field included in the SCI and /Or the resource indication information of the side link channel. For example, if the first terminal device determines that the value of the fourth indication field indicates that the SCI includes resource indication information of the side reference signal, the first terminal device may further obtain the side reference signal from the SCI
  • the resource indication information can further determine the time-frequency resource indicated by the resource indication information of the side reference signal.
  • the first indication field and the fourth indication field may be the same indication field.
  • the resource indication information of the data channel may be carried in the SCI, or the indication information of whether the SCI includes the resource indication information of the data channel may also be carried in the SCI.
  • the SCI may include a second indication field
  • the second indication field may be resource indication information indicating a data channel
  • the resource indication information of the data channel may also be data scheduling information for scheduling data.
  • the first terminal device may determine that the resource indication information of the data channel included in the SCI according to the second indication field included in the SCI, and then the first terminal device The time-frequency resource of the data channel can be determined according to the value of the second indication field.
  • the SCI may include a second indication field, and the second indication field may be used to indicate whether the SCI includes resource indication information of a data channel.
  • the first terminal device may first determine the resource indication information including the data channel in the SCI according to the value of the second indication field included in the SCI, The first terminal device may further obtain resource indication information of the data channel from the SCI, and may further determine the time-frequency resource indicated by the resource indication information of the data channel.
  • the first terminal device may first determine that the resource of the SCI does not include the data channel according to the value of the second indication field included in the SCI Indication information, at this time the first terminal device may determine that the SCI includes only resource indication information of the side reference signal, and then the first terminal may determine the resource of the side reference signal according to the first indication field and/or the fourth indication field Instructions.
  • the fourth indication field and the second indication field may also jointly indicate information of the side reference signal (and/or side link channel) and information of the data channel. That is, the fourth indication field and the second indication field may be the same indication field.
  • 2 bits can be included in the SCI. When the 2 bits take different values, they can represent different indication contents: 00 can indicate that the SCI includes resource indication information of the data channel, excluding resource indication information of the side reference signal ; 01 can indicate that the SCI includes the resource indication information of the side reference signal and does not include the resource indication information of the data channel; 10 can indicate that the SCI includes both the resource indication information of the side reference signal and the resource indication of the data channel information.
  • the SCI may also include a third indication field, where the third indication field is used to indicate whether the SCI includes only resource indication information of side reference signals (and/or side link channels), and That is, the third indication field may also be used to indicate whether the SCI includes resource indication information of the data channel.
  • the third indication field includes 1 bit, 1 indicates that the SCI includes only resource indication information of the side reference signal (and/or side link channel), and does not include resource indication information of the data channel; 0 indicates that the SCI is both It includes the resource indication information of the side reference signal and the resource indication information of the data channel.
  • the first indication field, the second indication field, the third indication field, and the fourth indication field may be carried in the SCI in any combination.
  • the first indication field is used to indicate resource indication information of the side reference signal (and/or side link channel)
  • the second indication field is used to indicate whether the SCI includes a data channel Resource indication information
  • the third indication field is used to indicate whether the SCI includes only the side reference signal (and/or side link channel) resource indication information
  • the fourth indication field is used to indicate the Whether the SCI includes the side reference signal (and/or side link channel) resource indication information may also be carried by a scrambling code sequence that scrambles the SCI.
  • the terminal device may obtain the correspondence between the value of the indication field and the scrambling code sequence by using protocol pre-configuration or network configuration information. The values in different indicator fields correspond to different scrambling code sequences.
  • a corresponding scrambling code sequence can be selected according to the value of the indication field to scramble the SCI.
  • the received SCI can be descrambled according to different scrambling code sequences, so as to determine the used scrambling code sequence, and then determine the received SCI according to the corresponding relationship.
  • the value of the indicator field corresponding to the scrambling code sequence is the value of the indicator field corresponding to the scrambling code sequence.
  • the resource indication information of the side reference signal (and/or side link channel) is used to indicate the time domain resource and/or frequency domain resource of the side reference signal (and/or side link channel).
  • the following uses the side CSI-RS as an example to describe how the resource indication information is indicated.
  • the resource indication information of the side CSI-RS may include time domain resource indication information of the side CSI-RS, and may specifically include time slot indication information of the side CSI-RS and/or the time of the side CSI-RS
  • the field symbol indicates information.
  • the resource indication information of the side row CSI-RS may include only time domain symbol indication information, then when the first terminal device obtains the time domain symbol indication information of the side row CSI-RS according to the SCI, it may determine the side Time domain symbols occupied by a row of CSI-RS in one slot.
  • the time domain symbol indication information indicates that the side CSI-RS occupies the last symbol in a slot.
  • the time slot indication information of the side CSI-RS may be determined by the protocol preconfiguration information or the configuration information of the network device.
  • the network device may configure the time slot where the side CSI-RS is located may be the physical side link carrying the SCI
  • the time slot where the physical channel (Sidelink Control Channel, PSCCH) is located is determined.
  • the time slot where the side CSI-RS is located may be the next time slot where the PSCCH carrying the SCI is located, or may be in the same time slot as the PSCCH carrying the SCI.
  • the resource indication information of the side row CSI-RS may include only time slot indication information, then when the first terminal device obtains the time slot indication information of the side row CSI-RS according to the SCI, the side row may be determined The time slot where the CSI-RS is located.
  • the time domain symbol indication information of the side CSI-RS may be determined by protocol preconfiguration information or configuration information of a network device. For example, the network device may configure the last or the penultimate symbol of the side CSI-RS in a slot.
  • the resource indication information of the side CSI-RS may include both time slot indication information and time domain symbol indication information, and the first terminal device may determine the time slot where the side CSI-RS is located according to the time slot indication information, The first terminal device may determine the symbol occupied by the side CSI-RS in the time slot indicated by the time slot indication information according to the time domain symbol indication information.
  • the slot indication information may be indicated by a slot index, which may be used to determine a slot; or it may also be indicated by a slot offset indication information, which may be used to indicate The time slot offset of the time slot where the side CSI-RS is located relative to a time domain position, for example, the one time domain position may be the time slot where the PSCCH carrying the SCI is located, or it may also be in a radio frame Location of time slot 0.
  • the resource indication information of the lateral CSI-RS may include frequency domain resource indication information of the lateral CSI-RS, and may specifically include at least one of the following information: the frequency domain starting position indication information of the lateral CSI-RS, The indication information of the end position of the frequency domain of the side CSI-RS and the length information of the frequency domain of the side CSI-RS.
  • the resource indication information of the side row CSI-RS may only include indication information of the start position in the frequency domain or indication information of the end position in the frequency domain.
  • the frequency domain length information of the side CSI-RS can be determined through protocol preconfiguration information or configuration information of network devices.
  • the network device may configure the side CSI-RS to occupy two physical resource blocks (Physical Resource Block, PRB) in the frequency domain.
  • PRB Physical Resource Block
  • the first terminal device may be further determined by the frequency domain position indicated by the frequency domain start position indication information or the frequency domain end position indication information and the length occupied by the side CSI-RS configured by the network device to determine the side CSI-RS Frequency resources.
  • the protocol pre-configures the frequency domain resource length of the side CSI-RS and the PSCCH carrying the SCI to be the same, and the first terminal device may be further indicated by the frequency domain start position indication information or the frequency domain end position indication information.
  • the location of the domain and the length information of the frequency domain resource of the PSCCH carrying the SCI determine the frequency domain resource of the side CSI-RS.
  • the resource indication information of the side CSI-RS may only include frequency domain length information.
  • the frequency domain start position indication information or the frequency domain end position indication information of the side CSI-RS may be determined through protocol preconfiguration information or configuration information of a network device.
  • the start position of the frequency domain of the side CSI-RS may be configured as an offset of a frequency domain position, and the one frequency domain position may be an agreed resource.
  • the frequency domain starting position of the side CSI-RS may also be the same as the frequency domain starting position of the SCI-bearing PSCCH.
  • the resource indication information of the side CSI-RS may include frequency domain start position indication information and frequency domain end position indication information, or the side CSI-RS resource indication information may include frequency domain start position indication information Sum any one of the frequency domain end position indication information and frequency domain length information.
  • the frequency domain start position indication information or the frequency domain end position indication information may be a resource block of a frequency domain position directly indicated or an index value of a subband, etc. Or it may be an offset relative to a frequency domain position, which may be the frequency domain position corresponding to the lowest resource block/highest resource block or subband of the PSCCH carrying the SCI, or the bandwidth of the carrier
  • the start/end position is either the start/end position of the bandwidth part or the frequency domain position corresponding to the index of the lowest resource block/highest resource block or subband of the synchronization signal.
  • the time slot may be replaced with a subframe, that is, the time slot indication information may be replaced with subframe indication information.
  • FIG. 4 is a schematic block diagram of a side communication method 200 according to an embodiment of the present application.
  • the method may be executed by a terminal device as a sending end in FIG. 1 or FIG. 2, as shown in FIG. 4, the method 200 includes some or all of the following:
  • the second terminal device sends the side link control information SCI to the first terminal device, where the SCI is used by the first terminal device to obtain the information of the side reference signal.
  • the SCI includes a first indication field
  • the first indication field is used by the first terminal device to determine resource indication information of the side reference signal.
  • the SCI includes a second indication field, and the second indication field is used to indicate whether the SCI includes resource indication information of a data channel.
  • the resource indication information of the side reference signal is used to indicate the time domain resource and/or the frequency domain resource of the side reference signal.
  • the resource indication information of the side reference signal includes at least one of the following information: time slot indication information of the side reference signal, time of the side reference signal Domain symbol indication information, frequency domain starting position indication information of the side reference signal, and frequency domain length information of the side reference signal.
  • the resource indication information of the side reference signal includes time slot indication information of the side reference signal and does not include time domain symbol indication information of the side reference signal
  • the time domain symbol occupied by the side reference signal in the time slot is determined by protocol preconfiguration information or network device configuration information.
  • the resource indication information of the side reference signal includes time domain symbol indication information of the side reference signal and does not include time slot indication information of the side reference signal
  • the side reference signal and the physical side control channel PSCCH carrying the SCI are in the same time slot.
  • the frequency domain length information of the side reference signal is determined by protocol preconfiguration information or network device configuration information.
  • the frequency domain start position of the side reference signal is determined according to the frequency domain start position of the physical side line control channel PSCCH carrying the SCI.
  • the side reference signal includes a side channel state information reference signal CSI-RS.
  • the interaction and related characteristics and functions between the second terminal device and the first terminal device described by the second terminal device correspond to the related characteristics and functions of the first terminal device. That is, what message the second terminal device sends to the first terminal device, and the first terminal device receives the corresponding message from the second terminal device.
  • FIG. 5 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application.
  • the terminal device 300 is a first terminal device. As shown in FIG. 5, the terminal device 300 includes:
  • the transceiver unit 310 is configured to receive the side link control information SCI sent by the second terminal device;
  • the processing unit 320 is configured to obtain information of the side reference signal according to the SCI.
  • the SCI includes a first indication field
  • the processing unit is specifically configured to: according to the first indication field, determine that the SCI includes a resource indication of the side reference signal information.
  • the SCI includes a second indication field
  • the processing unit is further configured to: according to the second indication field, determine whether the SCI includes resource indication information of a data channel.
  • the resource indication information of the side reference signal is used to indicate the time domain resource and/or the frequency domain resource of the side reference signal.
  • the resource indication information of the side reference signal includes at least one of the following information: time slot indication information of the side reference signal, time of the side reference signal Domain symbol indication information, frequency domain starting position indication information of the side reference signal, and frequency domain length information of the side reference signal.
  • the processing unit is further configured to determine the time domain symbol occupied by the side reference signal in the time slot according to protocol preconfiguration information or network device configuration information.
  • the processing unit is further configured to determine the time slot where the physical side channel control channel PSCCH carrying the SCI is located as the time slot where the side reference signal is located.
  • the processing unit is further configured to determine the frequency domain length of the side reference signal according to protocol preconfiguration information or network device configuration information.
  • the processing unit is further configured to: according to the frequency domain start position of the physical side channel control channel PSCCH carrying the SCI, determine the frequency domain start position of the side reference signal.
  • the side reference signal includes a side channel state information reference signal CSI-RS.
  • terminal device 300 may correspond to the first terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 300 are respectively for implementing the method of FIG. 3
  • the corresponding process of the first terminal device in the system will not be repeated here.
  • FIG. 6 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application.
  • the terminal device 400 is a second terminal device. As shown in FIG. 6, the terminal device 400 includes:
  • the transceiver unit is used for side link control information SCI from the first terminal device, and the SCI is used by the first terminal device to obtain information of the side reference signal.
  • the SCI includes a first indication field
  • the first indication field is used by the first terminal device to determine resource indication information of the side reference signal.
  • the SCI includes a second indication field, and the second indication field is used to indicate whether the SCI includes resource indication information of a data channel.
  • the resource indication information of the side reference signal is used to indicate the time domain resource and/or the frequency domain resource of the side reference signal.
  • the resource indication information of the side reference signal includes at least one of the following information: time slot indication information of the side reference signal, time of the side reference signal Domain symbol indication information, frequency domain starting position indication information of the side reference signal, and frequency domain length information of the side reference signal.
  • the resource indication information of the side reference signal includes time slot indication information of the side reference signal and does not include time domain symbol indication information of the side reference signal
  • the time domain symbol occupied by the side reference signal in the time slot is determined by protocol preconfiguration information or network device configuration information.
  • the resource indication information of the side reference signal includes time domain symbol indication information of the side reference signal and does not include time slot indication information of the side reference signal
  • the side reference signal and the physical side control channel PSCCH carrying the SCI are in the same time slot.
  • the frequency domain length information of the side reference signal is determined by protocol preconfiguration information or network device configuration information.
  • the frequency domain start position of the side reference signal is determined according to the frequency domain start position of the physical side line control channel PSCCH carrying the SCI.
  • the side reference signal includes a side channel state information reference signal CSI-RS.
  • terminal device 400 may correspond to the second terminal device in the method embodiment of the present application, and the above and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing the method of FIG. 4
  • the corresponding process of the second terminal device in the system will not be repeated here.
  • an embodiment of the present application further provides a terminal device 500.
  • the terminal device 500 may be the terminal device 300 in FIG. 5, which can be used to execute the first terminal device corresponding to the method 100 in FIG. Content.
  • the terminal device 500 may also be the terminal device 400 in FIG. 6, which can be used to execute the content of the second terminal device corresponding to the method 200 in FIG. 4.
  • the terminal device 500 shown in FIG. 7 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 terminal device 500 may further include a memory 520.
  • the processor 510 can call and run a computer program from the memory 520 to implement the method in the embodiments 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 terminal device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by the device.
  • the transceiver 530 may include a transmitter and a receiver.
  • the transceiver 530 may further include antennas, and the number of antennas may be one or more.
  • the terminal device 500 may be the terminal device of the embodiment of the present application, and the terminal device 500 may implement the corresponding process implemented by the first terminal device in each method of the embodiment of the present application. Repeat.
  • the processing unit in the terminal device 300/terminal device 400 may be implemented by the processor 510 in FIG. 7.
  • the transceiver unit in the terminal device 300/terminal device 400 may be implemented by the transceiver 530 in FIG. 7.
  • FIG. 8 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 600 shown in FIG. 8 includes a processor 610, and the processor 610 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 600 may further include a memory 620.
  • the processor 610 can call and run a computer program from the memory 620 to implement the method in the embodiments of the present application.
  • the memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.
  • the chip 600 may further include an input interface 630.
  • the processor 610 can control the input interface 630 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.
  • the chip 600 may further include an output interface 640.
  • the processor 610 can control the output interface 640 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.
  • the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding process implemented by the terminal device in each method of the embodiments of the present application.
  • chips mentioned in the embodiments of the present application may also be referred to as system-on-chips, system chips, chip systems, or system-on-chip chips.
  • FIG. 9 is a schematic block diagram of a communication system 700 provided by an embodiment of the present application. As shown in FIG. 9, the communication system 700 includes a first terminal device 710 and a second terminal device 720.
  • the first terminal device 710 may be used to implement the corresponding function implemented by the first terminal device in the above method
  • the second terminal device 720 may be used to implement the corresponding function implemented by the second terminal device in the above method
  • I will not repeat them here.
  • the processor in the embodiments of the present application may be an integrated circuit chip, which has signal processing capabilities.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a 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 (Application Specific Integrated Circuit, ASIC), an existing programmable gate array (Field Programmable Gate Array, FPGA), or other available Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application may be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware decoding processor, or may be executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, and 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 embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically Erasable 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 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
  • enhanced SDRAM ESDRAM
  • Synchlink DRAM SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiments 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) 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) and so on. That is to say, the memories in the embodiments of the present application are intended to include but are not limited to these and any other suitable types of memories.
  • Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium may be applied to the network device in the embodiments 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 embodiments 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 embodiments of the present application.
  • the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, for simplicity And will not be repeated here.
  • An embodiment of the present application also provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiments 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. Repeat again.
  • the computer program product can be applied to the terminal device in the embodiments 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. I will not repeat them here.
  • An 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 allowed to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. And will not be repeated here.
  • the computer program can be applied to the terminal device in the embodiments of the present application.
  • the computer program runs on the computer, the computer is allowed to execute the corresponding process implemented by the terminal device in each method of the embodiments of the present application. And will not be repeated here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • 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 may be combined or 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 may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present 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 the present application essentially or part of the contribution to the existing technology or 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 enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments 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

本申请实施例公开了一种侧行通信的方法和终端设备。该方法包括：第一终端设备接收第二终端设备发送的侧行链路控制信息SCI；所述第一终端设备根据所述SCI，获取侧行参考信号的信息。本申请实施例的方法和终端设备，能够实现在侧行链路上传输侧行参考信号，从而提高车联网系统的吞吐量。

Description

侧行通信的方法和终端设备 技术领域
本申请实施例涉及通信领域，具体涉及一种侧行通信的方法和终端设备。
背景技术
为了提高系统的吞吐量，终端可以基于一些参考信号对信道进行测量，根据测量结果选取合适的传输参数，例如，根据信道状态信息参考信号(Channel State Information-Reference Signals，CSI-RS)进行信道测量，选取各种质量信息并反馈到发送端，从而提高系统的吞吐量。
在车联网(Vehicle to Everything，V2X)系统中，也引入了各种参考信号，如何在侧行链路上发送侧行参考信号是需要解决的问题。
发明内容
本申请实施例提供一种侧行通信的方法和终端设备，能够实现在侧行链路上传输侧行参考信号，从而提高车联网系统的吞吐量。
第一方面，提供了一种侧行通信的方法，该方法包括：第一终端设备接收第二终端设备发送的侧行链路控制信息SCI；所述第一终端设备根据所述SCI，获取侧行参考信号的信息。
第二方面，提供了一种侧行通信的方法，该方法包括：第二终端设备向第一终端设备侧行链路控制信息SCI，所述SCI用于所述第一终端设备获取侧行参考信号的信息。
第三方面，提供了一种终端设备，用于执行上述第一方面或其各实现方式中的方法。
具体地，该终端设备包括用于执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法的功能模块。
第四方面，提供了一种终端设备，包括处理器和存储器。该存储器用于存储计算机程序，该处理器用于调用并运行该存储器中存储的计算机程序，执行上述第一方面至第二方面中任一方面或其各实现方式中的方法。
第五方面，提供了一种芯片，用于实现上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
具体地，该芯片包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有该芯片的设备执行如上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
第六方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序使得计算机执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
第七方面，提供了一种计算机程序产品，包括计算机程序指令，该计算机程序指令使得计算机执行上述第一方面至第二方面中的任一方面或其各 实现方式中的方法。
第八方面，提供了一种计算机程序，当其在计算机上运行时，使得计算机执行上述第一方面至第二方面中的任一方面或其各实现方式中的方法。
通过上述技术方案，第一终端设备基于第二终端设备发送的侧行链路控制信息SCI，即可获得侧行参考信号的信息，从而实现了在侧行链路上传输侧行参考信号，以提高系统的吞吐量。
附图说明
图1是本申请实施例提供的一种侧行通信系统的示意性图。
图2是本申请实施例提供的一种侧行通信系统的示意性图。
图3是本申请实施例提供的侧行通信的方法的一种示意性框图。
图4是本申请实施例提供的侧行通信的方法的另一种示意性框图。
图5是本申请实施例提供的终端设备的一种示意性框图。
图6是本申请实施例提供的终端设备的另一种示意性框图。
图7是本申请实施例提供的终端设备的另一种示意性框图。
图8是本申请实施例提供的一种芯片的示意性框图。
图9是本申请实施例提供的一种通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
应理解，本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进LTE系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access，WiMAX)通信系统、新无线(New Radio，NR)或未来的5G系统等。
特别地，本申请实施例的技术方案可以应用于各种基于非正交多址接入技术的通信系统，例如稀疏码多址接入(Sparse Code Multiple Access，SCMA)系统、低密度签名(Low Density Signature，LDS)系统等，当然SCMA系统和LDS系统在通信领域也可以被称为其他名称；进一步地，本申请实施例的技术方案可以应用于采用非正交多址接入技术的多载波传输系统，例如采用非正交多址接入技术正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)、滤波器组多载波(Filter Bank Multi-Carrier，FBMC)、通用频分复用(Generalized Frequency Division Multiplexing，GFDM)、滤波 正交频分复用(Filtered-OFDM，F-OFDM)系统等。
本申请实施例中的终端设备可以指用户设备(User Equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(Public Land Mobile Network，PLMN)中的终端设备等，本申请实施例并不限定。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备可以是GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(Evolutional NodeB，eNB或eNodeB)，还可以是云无线接入网络(Cloud Radio Access Network，CRAN)场景下的无线控制器，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等，本申请实施例并不限定。
图1和图2是本申请实施例的一个应用场景的示意图。图1示例性地示出了一个网络设备和两个终端设备，可选地，该无线通信系统可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备，本申请实施例对此不做限定。此外，该无线通信系统还可以包括移动管理实体(Mobile Management Entity，MME)、服务网关(Serving Gateway，S-GW)、分组数据网络网关(Packet Data Network Gateway，P-GW)等其他网络实体，但本申请实施例不限于此。
具体地，终端设备20和终端设备30可以以设备到设备(Device to Device，D2D)通信模式进行通信，在进行D2D通信时，终端设备20和终端设备30通过D2D链路即侧行链路(Sidelink，SL)直接进行通信。例如图1或者图2所示，终端设备20和终端设备30通过侧行链路直接进行通信。在图1中，终端设备20和终端设备30之间通过侧行链路通信，其传输资源是由网络设备分配的；在图2中，终端设备20和终端设备30之间通过侧行链路通信，其传输资源是由终端设备自主选取的，不需要网络设备分配传输资源。
D2D通信模式可以应用于车对车(Vehicle to Vehicle，V2V)通信或车辆到其他设备(Vehicle to Everything，V2X)通信。在V2X通信中，X可以泛指任何具有无线接收和发送能力的设备，例如但不限于慢速移动的无线装置，快速移动的车载设备，或是具有无线发射接收能力的网络控制节点等。应理解，本申请实施例主要应用于V2X通信的场景，但也可以应用于任意其它D2D通信场景，本申请实施例对此不做任何限定。
在3GPP协议的版本Release-14中对LTE-V2X进行了标准化，定义了两 种传输模式，即传输模式3(mode 3)和传输模式4(mode 4)。使用传输模式3的终端设备的传输资源是由基站分配的，终端设备根据基站分配的资源在侧行链路上进行数据的发送；基站可以为终端设备分配单次传输的资源，也可以为终端设备分配半静态传输的资源。使用传输模式4的终端设备如果具备侦听能力，采用侦听(sensing)和预留(reservation)的方式传输数据，如果终端设备不具备侦听能力，则在资源池中随机选取传输资源。具备侦听能力的终端设备在资源池中通过侦听的方式获取可用的资源集合，终端设备从该集合中随机选取一个资源进行数据传输。由于车联网系统中的业务具有周期性特征，因此终端设备通常采用半静态传输的方式，即终端设备选取一个传输资源后，就会在多个传输周期中持续的使用该资源，从而降低资源重选以及资源冲突的概率。终端设备会在本次传输的控制信息中携带预留下次传输资源的信息，从而使得其他终端设备可以通过检测该终端设备的控制信息判断这块资源是否被该终端设备预留和使用，达到降低资源冲突的目的。
在NR-V2X系统中，引入了多种传输模式，例如，模式1和模式2，其中，模式1是网络为终端分配传输资源(类似与LTE-V2X中的mode 3)，模式2是终端选取传输资源，在模式2下又包括但不限于以下几种模式：
mode 2a：终端自主选取传输资源(类似于LTE-V2X中的mode 4)；例如，终端在一个预配置或网络配置的资源池中自主选取资源(可以通过随机的方式选取资源，或者通过侦听的方式选取资源)。
mode 2b：终端辅助其他终端选取资源；例如，第一终端向第二终端发送辅助信息，该辅助信息可以包括但不限于：可用的时频资源信息，可用的传输资源集合信息，信道测量信息和信道质量信息(如信道状态信息(Channel State Information，CSI)、信道质量指示(Channel Quality Indicator，CQI)、预编码矩阵指示(Precoding Matrix Indicator，PMI)、秩指示(rank indication，RI)、参考信号接收功率(Reference Signal Receiving Power，RSRP)、参考信号接收质量(Reference Signal Receiving Quality，RSRQ)、接收信号的强度指示(Received Signal Strength Indicator，RSSI)、路损信息等)。
mode 2c：终端在为其配置的传输资源中选取资源；例如，网络为每个终端配置多个传输资源，当终端有侧行数据传输时，从网络配置的多个传输资源中选择一个传输资源进行数据传输。
mode 2d：第一终端为第二终端分配传输资源；例如，第一终端为组通信的组头，第二终端是该组的组成员，第一终端直接为第二终端分配侧行链路传输的时频资源。
在NR-V2X中，需要支持自动驾驶，因此对车辆之间数据交互提出了更高的要求，如更高的吞吐量、更低的时延、更高的可靠性、更大的覆盖范围、更灵活的资源分配等。
为了提高系统的吞吐量，终端可以对信道进行测量，根据测量结果选取合适的传输参数，例如，根据CSI-RS进行信道测量，选取CQI、PMI、RI等信息并反馈到发送端，发送端根据反馈信息选取合适的传输参数，从而提 高系统的吞吐量。
在NR-V2X的侧行链路上，也引入了各种参考信号，如何在侧行链路上发送参考信号是需要解决的问题。
图3为本申请实施例提供的一种侧行通信的方法100的示意性框图。该方法可以由图1或图2中作为接收端的某个终端设备执行，如图3所示，该方法100包括以下部分或全部内容：
S110，第一终端设备接收第二终端设备发送的侧行链路控制信息SCI；
S120，所述第一终端设备根据所述SCI，获取侧行参考信号的信息。
具体地，第二终端设备可以通过侧行链路控制信息(Sidelink Control Information，SCI)向第一终端设备指示侧行参考信号的各种信息，进而使得第一终端设备可以获取到侧行参考信号的信息。这里所述的指示，例如可以通过以下的方式实现：
方式一：在SCI中携带侧行参考信号的信息，例如，在SCI中携带侧行参考信号的资源指示信息，第一终端设备根据该SCI中携带的侧行参考信号的资源指示信息可以获得侧行参考信号的时频资源。
方式二：在SCI中携带是否在SCI中包括侧行参考信号的资源指示信息的指示信息。例如，在SCI中包括1比特，该比特为0表示在该SCI中不包括侧行参考信号的指示信息；该比特为1表示在该SCI中包括侧行参考信号的资源指示信息，此时，该SCI中包括指示域用于指示侧行参考信号的资源。
方式三：通过SCI隐式指示侧行参考信号的资源指示信息。例如，通过对SCI进行加扰的扰码序列指示侧行参考信号的资源指示信息。可以通过网络配置或者协议预配置的方式获得扰码序列和侧行参考信号的资源指示信息之间的对应关系，该对应关系可以包括多个扰码序列和多个传输资源之间的对应关系，例如，当采用第一扰码序列对SCI加扰时，表示侧行参考信号占据第一传输资源，当采用第二扰码序列对SCI加扰时，表示侧行参考信号占据第二传输资源。
方式四：通过SCI隐式指示该SCI中是否包括侧行参考信号的资源指示信息。例如，通过对SCI进行加扰的扰码序列指示该SCI是否包括侧行参考信号的资源指示信息。可以通过网络配置或者协议预配置的方式获得扰码序列和指示信息之间的对应关系，例如，当采用第一扰码序列对SCI加扰时，指示信息表示该SCI包括侧行参考信号的资源指示信息，当采用第二扰码序列对SCI加扰时，指示信息表示该SCI不包括侧行参考信号的资源指示信息。
方式五：通过SCI的格式指示是否在SCI中包括侧行参考信号的资源指示信息。例如，通过协议预定义2种SCI格式，当采用第一种SCI格式时，表示该SCI包括侧行参考信号的资源指示信息；当采用第二种SCI格式时，表示该SCI不包括侧行参考信号的资源指示信息。
可选地，所述侧行参考信号可以是以下信号中的任意一种：侧行CSI-RS，侧行探测参考信号(Sounding Reference Signal，SRS)，侧行相位跟踪参考信号(Phase Tracking Reference Signal,PT-RS)，解调参考信号(Demodulation Reference Signal，DMRS)。
可选地，所述侧行参考信号还可替换为侧行链路信道。也就是说，第一终端设备接收第二终端设备发送的SCI，所述第一终端设备可以根据所述SCI，获取侧行链路信道的信息。例如，所述侧行链路信道可以是物理侧行链路反馈信道(Physical Sidelink Feedback Channel，PSFCH)。
具体地，第二终端设备可以通过SCI向第一终端设备指示侧行链路信道的各种信息，进而使得第一终端设备可以获取到侧行链路信道的信息。同样地，这里的指示可以是通过上述各种方式实现，为了简洁，此处不再赘述。
可选地，在本申请实施例中，可以直接在SCI中携带侧行参考信号和/或侧行链路信道的资源指示信息。例如，可以在SCI中携带侧行CSI-RS的资源指示信息，和/或在SCI中携带PSFCH的资源指示信息。
具体地，所述SCI可以包括第一指示域，该第一指示域可以是指示侧行参考信号的时频资源，也可以是指示侧行链路信道的时频资源。第一终端设备在接收到第二终端设备发送的SCI之后，第一终端设备首先可以根据SCI中包括的第一指示域，确定该SCI中包括所述侧行参考信号的资源指示信息和/或所述侧行链路信道的资源指示信息。例如，第一终端设备确定第一指示域指示的是侧行参考信号的时频资源，第一终端设备就可以进一步地根据该第一指示域的值确定所述侧行参考信号的时频资源。
可选地，在本申请实施例中，也可以在所述SCI中携带是否包括所述侧行参考信号的资源指示信息和/或所述侧行链路信道的资源指示信息的指示信息。
具体地，所述SCI可以包括第四指示域，所述第四指示域用于指示所述SCI是否包括所述侧行参考信号的资源指示信息和/或所述侧行链路信道的资源指示信息。第一终端设备在接收到第二终端设备发送的SCI之后，第一终端设备首先可以根据SCI中包括的第四指示域的值，确定该SCI中包括所述侧行参考信号的资源指示信息和/或所述侧行链路信道的资源指示信息。例如，第一终端设备确定第四指示域的值指示的是所述SCI包括侧行参考信号的资源指示信息，第一终端设备就可以进一步地从所述SCI中获取所述侧行参考信号的资源指示信息，进而可以确定所述侧行参考信号的资源指示信息指示的时频资源。
可选地，该第一指示域和第四指示域可以是同一个指示域。
可选地，在本申请实施例中，也可以在所述SCI中携带数据信道的资源指示信息，或者也可以在所述SCI中携带所述SCI是否包括数据信道的资源指示信息的指示信息。
例如，所述SCI可以包括第二指示域，所述第二指示域可以是指示数据信道的资源指示信息，所述数据信道的资源指示信息也可以是数据调度信息，用于调度数据。第一终端设备在接收到第二终端设备发送的SCI之后，第一终端设备可以根据SCI中包括的第二指示域，确定该SCI中包括所述数据信道的资源指示信息，进而第一终端设备就可以根据该第二指示域的值确定所述数据信道的时频资源。
再例如，所述SCI可以包括第二指示域，所述第二指示域可以用于指示 所述SCI中是否包括数据信道的资源指示信息。第一终端设备在接收到第二终端设备发送的SCI之后，第一终端设备可以首先根据所述SCI中包括的第二指示域的值，确定该SCI中包括所述数据信道的资源指示信息，第一终端设备进一步地可以从所述SCI中获取所述数据信道的资源指示信息，进而可以确定所述数据信道的资源指示信息指示的时频资源。或者，第一终端设备在接收到第二终端设备发送的SCI之后，第一终端设备可以首先根据所述SCI中包括的第二指示域的值，确定该SCI中不包括所述数据信道的资源指示信息，此时第一终端设备可以确定该SCI只包括侧行参考信号的资源指示信息，进而该第一终端可以根据上述第一指示域和/或第四指示域确定侧行参考信号的资源指示信息。
可选地，该第四指示域和第二指示域还可以联合指示侧行参考信号(和/或侧行链路信道)的信息和数据信道的信息。也就是说，该第四指示域和第二指示域可以是同一个指示域。例如，可以在SCI中包括2比特，当该2比特取不同值时，可以代表不同的指示内容：00可以表示该SCI中包括数据信道的资源指示信息，不包括侧行参考信号的资源指示信息；01可以表示该SCI中包括侧行参考信号的资源指示信息，不包括数据信道的资源指示信息；10可以表示该SCI中既包括侧行参考信号的资源指示信息，也包括数据信道的资源指示信息。
可选地，所述SCI中也可以包括第三指示域，该第三指示域用于指示所述SCI是否只包括侧行参考信号(和/或侧行链路信道)的资源指示信息，也就是说，该第三指示域也可以用来指示所述SCI是否包括数据信道的资源指示信息。例如，该第三指示域包括1比特，1表示该SCI只包括侧行参考信号(和/或侧行链路信道)的资源指示信息，不包括数据信道的资源指示信息；0表示该SCI既包括侧行参考信号的资源指示信息，也包括数据信道的资源指示信息。
可选地，该第一指示域、第二指示域、第三指示域以及第四指示域可以任意组合携带在所述SCI中。
可选地，所述第一指示域用于指示所述侧行参考信号(和/或侧行链路信道)的资源指示信息、所述第二指示域用于指示所述SCI是否包括数据信道的资源指示信息、所述第三指示域用于指示所述SCI是否只包括侧行参考信号(和/或侧行链路信道)的资源指示信息以及所述第四指示域用于指示所述SCI是否包括所述侧行参考信号(和/或侧行链路信道)的资源指示信息也可以通过对SCI进行加扰的扰码序列承载。例如，终端设备可以通过协议预配置或者网络配置的信息，获取指示域的值与扰码序列之间的对应关系。不同指示域的值对应不同的扰码序列。对于发送端的第二终端设备来讲，可以根据指示域的值选择相对应的扰码序列对SCI进行加扰。而对于接收端的第一终端设备来讲，则可以根据不同的扰码序列对接收到的SCI进行解扰处理，从而判断出所采用的扰码序列，进而根据对应关系确定接收到的SCI所采用的扰码序列对应的指示域的值。
所述侧行参考信号(和/或侧行链路信道)的资源指示信息用于指示所述 侧行参考信号(和/或侧行链路信道)的时域资源和/或频域资源。下面以侧行CSI-RS为例描述，该资源指示信息是如何指示的。
侧行CSI-RS的资源指示信息可以包括侧行CSI-RS的时域资源指示信息，具体可以包括所述侧行CSI-RS的时隙指示信息和/或所述侧行CSI-RS的时域符号指示信息。
例如，该侧行CSI-RS的资源指示信息可以只包括时域符号指示信息，那么当第一终端设备根据SCI，获取到该侧行CSI-RS的时域符号指示信息后，可以确定该侧行CSI-RS在一个时隙中所占据的时域符号。例如，该时域符号指示信息指示侧行CSI-RS占据一个时隙中最后一个符号。侧行CSI-RS的时隙指示信息可以由协议预配置信息或者网络设备的配置信息确定，例如，网络设备可以配置侧行CSI-RS所在的时隙可以是由承载SCI的物理侧行链路控制信道(Physical Sidelink Control Channel，PSCCH)所在的时隙确定。具体地，侧行CSI-RS所在的时隙可以是承载SCI的PSCCH所在时隙的下一个时隙，或者也可以是与承载SCI的PSCCH在同一个时隙。
再例如，该侧行CSI-RS的资源指示信息可以只包括时隙指示信息，那么当第一终端设备根据SCI，获取到该侧行CSI-RS的时隙指示信息之后，可以确定该侧行CSI-RS所在的时隙。侧行CSI-RS的时域符号指示信息可以由协议预配置信息或者是网络设备的配置信息确定。例如，网络设备可以配置侧行CSI-RS在一个时隙中的最后一个或者倒数第二个符号。
再例如，该侧行CSI-RS的资源指示信息可以既包括时隙指示信息，又包括时域符号指示信息，第一终端设备可以根据时隙指示信息确定侧行CSI-RS所在的时隙，第一终端设备可以根据时域符号指示信息确定侧行CSI-RS在时隙指示信息所指示的时隙中所占据的符号。
具体地，时隙指示信息可以通过时隙索引表示，该时隙索引可以用于确定一个时隙；或者也可以通过一个时隙偏移指示信息表示，该时隙偏移指示信息可以用于指示侧行CSI-RS所在的时隙相对于一个时域位置的时隙偏移量，例如，该一个时域位置可以是承载所述SCI的PSCCH所在的时隙，或者也可以是一个无线帧中时隙0的位置。
侧行CSI-RS的资源指示信息可以包括侧行CSI-RS的频域资源指示信息，具体可以包括以下信息中的至少一种：所述侧行CSI-RS的频域起始位置指示信息、所述侧行CSI-RS的频域结束位置指示信息和所述侧行CSI-RS的频域长度信息。
例如，该侧行CSI-RS的资源指示信息可以只包括频域起始位置指示信息或频域结束位置指示信息。该侧行CSI-RS的频域长度信息可以通过协议预配置信息或者网络设备的配置信息确定。例如，网络设备可以配置该侧行CSI-RS在频域上占据两个物理资源块(Physical Resource Block，PRB)。第一终端设备可以进一步地由频域起始位置指示信息或频域结束位置指示信息指示的频域位置以及网络设备配置的侧行CSI-RS所占据的长度，确定所述侧行CSI-RS的频域资源。又例如，协议预配置该侧行CSI-RS和承载该SCI的PSCCH的频域资源长度相同，第一终端设备可以进一步地由频域起 始位置指示信息或频域结束位置指示信息指示的频域位置以及承载该SCI的PSCCH的频域资源的长度信息，确定所述侧行CSI-RS的频域资源。
再例如，该侧行CSI-RS的资源指示信息可以只包括频域长度信息。该侧行CSI-RS的频域起始位置指示信息或频域结束位置指示信息可以通过协议预配置信息或者网络设备的配置信息确定的。例如，该侧行CSI-RS的频域起始位置可以配置为是一个频域位置的偏移，该一个频域位置可以是约定的资源。或者该侧行CSI-RS的频域起始位置也可以是与承载SCI的PSCCH的频域起始位置相同。
再例如，该侧行CSI-RS的资源指示信息可以包括频域起始位置指示信息和频域结束位置指示信息，或者该侧行CSI-RS的资源指示信息可以包括频域起始位置指示信息和频域结束位置指示信息中的任一种以及频域长度信息。在第一终端设备获取到该侧行CSI-RS的资源指示信息之后，即可获得该侧行CSI-RS的资源指示信息指示的频域资源。
具体地，该频域起始位置指示信息或频域结束位置指示信息可以是直接指示的一个频域位置的资源块或者是一个子带的索引值等。或者也可以是相对于一个频域位置的偏移量，该一个频域位置可以是承载所述SCI的PSCCH的最低资源块/最高资源块或子带对应的频域位置，或者是载波的带宽起始/结束位置，或者是带宽部分的起始/结束位置，或者是同步信号的最低资源块/最高资源块或子带的索引对应的频域位置。
需要说明的，在本申请实施例中，时隙可以替换为子帧，也就是说，时隙指示信息可以替换为子帧指示信息。
图4为本申请实施例提供的一种侧行通信的方法200的示意性框图。该方法可以由图1或图2中作为发送端的某个终端设备执行，如图4所示，该方法200包括以下部分或全部内容：
S210，第二终端设备向第一终端设备侧行链路控制信息SCI，所述SCI用于所述第一终端设备获取侧行参考信号的信息。
可选地，在本申请实施例中，所述SCI包括第一指示域，所述第一指示域用于所述第一终端设备确定所述侧行参考信号的资源指示信息。
可选地，在本申请实施例中，所述SCI包括第二指示域，所述第二指示域用于指示所述SCI是否包括数据信道的资源指示信息。
可选地，在本申请实施例中，所述侧行参考信号的资源指示信息用于指示所述侧行参考信号的时域资源和/或频域资源。
可选地，在本申请实施例中，所述侧行参考信号的资源指示信息包括以下信息中的至少一种：所述侧行参考信号的时隙指示信息、所述侧行参考信号的时域符号指示信息、所述侧行参考信号的频域起始位置指示信息和侧行参考信号的频域长度信息。
可选地，在本申请实施例中，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的时隙指示信息且不包括所述侧行参考信号的时域符号指示信息，所述侧行参考信号在时隙中占据的时域符号是由协议预配置信息或网络设备配置信息确定的。
可选地，在本申请实施例中，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的时域符号指示信息且不包括所述侧行参考信号的时隙指示信息，所述侧行参考信号与承载所述SCI的物理侧行控制信道PSCCH在同一个时隙内。
可选地，在本申请实施例中，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的频域起始位置指示信息且不包括所述侧行参考信号的频域长度信息，所述侧行参考信号的频域长度信息是由协议预配置信息或网络设备配置信息确定的。
可选地，在本申请实施例中，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的频域长度信息且不包括所述侧行参考信号的频域起始位置指示信息，所述侧行参考信号的频域起始位置是根据承载所述SCI的物理侧行控制信道PSCCH的频域起始位置确定的。
可选地，在本申请实施例中，所述侧行参考信号包括侧行信道状态信息参考信号CSI-RS。
应理解，第二终端设备描述的第二终端设备与第一终端设备之间的交互及相关特性、功能等与第一终端设备的相关特性、功能相应。也就是说，第二终端设备向第一终端设备发送什么消息，第一终端设备从第二终端设备接收相应的消息。
还应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
上文中详细描述了根据本申请实施例的侧行通信的方法，下面将结合图5至图7，描述根据本申请实施例的侧行通信的装置，方法实施例所描述的技术特征适用于以下装置实施例。
图5示出了本申请实施例的终端设备300的示意性框图。该终端设备300为第一终端设备，如图5所示，该终端设备300包括：
收发单元310，用于接收第二终端设备发送的侧行链路控制信息SCI；
处理单元320，用于根据所述SCI，获取侧行参考信号的信息。
可选地，在本申请实施例中，所述SCI包括第一指示域，所述处理单元具体用于：根据所述第一指示域，确定所述SCI包括所述侧行参考信号的资源指示信息。
可选地，在本申请实施例中，所述SCI包括第二指示域，所述处理单元还用于：根据所述第二指示域，确定所述SCI是否包括数据信道的资源指示信息。
可选地，在本申请实施例中，所述侧行参考信号的资源指示信息用于指示所述侧行参考信号的时域资源和/或频域资源。
可选地，在本申请实施例中，所述侧行参考信号的资源指示信息包括以下信息中的至少一种：所述侧行参考信号的时隙指示信息、所述侧行参考信号的时域符号指示信息、所述侧行参考信号的频域起始位置指示信息和所述侧行参考信号的频域长度信息。
可选地，在本申请实施例中，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的时隙指示信息且不包括所述侧行参考信号的时域符号指示信息，所述处理单元还用于：根据协议预配置信息或网络设备配置信息，确定所述侧行参考信号在时隙中占据的时域符号。
可选地，在本申请实施例中，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的时域符号指示信息且不包括所述侧行参考信号的时隙指示信息，所述处理单元还用于：将承载所述SCI的物理侧行控制信道PSCCH所在的时隙确定为所述侧行参考信号所在的时隙。
可选地，在本申请实施例中，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的频域起始位置指示信息且不包括所述侧行参考信号的频域长度信息，所述处理单元还用于：根据协议预配置信息或网络设备配置信息，确定所述侧行参考信号的频域长度。
可选地，在本申请实施例中，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的频域长度信息且不包括所述侧行参考信号的频域起始位置指示信息，所述处理单元还用于：根据承载所述SCI的物理侧行控制信道PSCCH的频域起始位置，确定所述侧行参考信号的频域起始位置。
可选地，在本申请实施例中，所述侧行参考信号包括侧行信道状态信息参考信号CSI-RS。
应理解，根据本申请实施例的终端设备300可对应于本申请方法实施例中的第一终端设备，并且终端设备300中的各个单元的上述和其它操作和/或功能分别为了实现图3方法中第一终端设备的相应流程，为了简洁，在此不再赘述。
图6示出了本申请实施例的终端设备400的示意性框图。该终端设备400为第二终端设备，如图6所示，该终端设备400包括：
收发单元，用于向第一终端设备侧行链路控制信息SCI，所述SCI用于所述第一终端设备获取侧行参考信号的信息。
可选地，在本申请实施例中，所述SCI包括第一指示域，所述第一指示域用于所述第一终端设备确定所述侧行参考信号的资源指示信息。
可选地，在本申请实施例中，所述SCI包括第二指示域，所述第二指示域用于指示所述SCI是否包括数据信道的资源指示信息。
可选地，在本申请实施例中，所述侧行参考信号的资源指示信息用于指示所述侧行参考信号的时域资源和/或频域资源。
可选地，在本申请实施例中，所述侧行参考信号的资源指示信息包括以下信息中的至少一种：所述侧行参考信号的时隙指示信息、所述侧行参考信号的时域符号指示信息、所述侧行参考信号的频域起始位置指示信息和侧行参考信号的频域长度信息。
可选地，在本申请实施例中，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的时隙指示信息且不包括所述侧行参考信号的时域符号指示信息，所述侧行参考信号在时隙中占据的时域符号是由协议预配置信息或网络设备配置信息确定的。
可选地，在本申请实施例中，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的时域符号指示信息且不包括所述侧行参考信号的时隙指示信息，所述侧行参考信号与承载所述SCI的物理侧行控制信道PSCCH在同一个时隙内。
可选地，在本申请实施例中，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的频域起始位置指示信息且不包括所述侧行参考信号的频域长度信息，所述侧行参考信号的频域长度信息是由协议预配置信息或网络设备配置信息确定的。
可选地，在本申请实施例中，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的频域长度信息且不包括所述侧行参考信号的频域起始位置指示信息，所述侧行参考信号的频域起始位置是根据承载所述SCI的物理侧行控制信道PSCCH的频域起始位置确定的。
可选地，在本申请实施例中，所述侧行参考信号包括侧行信道状态信息参考信号CSI-RS。
应理解，根据本申请实施例的终端设备400可对应于本申请方法实施例中的第二终端设备，并且终端设备400中的各个单元的上述和其它操作和/或功能分别为了实现图4方法中第二终端设备的相应流程，为了简洁，在此不再赘述。
如图7所示，本申请实施例还提供了一种终端设备500，该终端设备500可以是图5中的终端设备300，其能够用于执行与图3中方法100对应的第一终端设备的内容。该终端设备500也可以是图6中的终端设备400，其能够用于执行与图4中方法200对应的第二终端设备的内容。图7所示的终端设备500包括处理器510，处理器510可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图7所示，终端设备500还可以包括存储器520。其中，处理器510可以从存储器520中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器520可以是独立于处理器510的一个单独的器件，也可以集成在处理器510中。
可选地，如图7所示，终端设备500还可以包括收发器530，处理器510可以控制该收发器530与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器530可以包括发射机和接收机。收发器530还可以进一步包括天线，天线的数量可以为一个或多个。
可选地，该终端设备500可为本申请实施例的终端设备，并且该终端设备500可以实现本申请实施例的各个方法中由第一终端设备实现的相应流程，为了简洁，在此不再赘述。
一个具体的实施方式中，终端设备300/终端设备400中的处理单元可以由图7中的处理器510实现。终端设备300/终端设备400中的收发单元可以由图7中的收发器530实现。
图8是本申请实施例的芯片的示意性结构图。图8所示的芯片600包括处理器610，处理器610可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图8所示，芯片600还可以包括存储器620。其中，处理器610可以从存储器620中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器620可以是独立于处理器610的一个单独的器件，也可以集成在处理器610中。
可选地，该芯片600还可以包括输入接口630。其中，处理器610可以控制该输入接口630与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
可选地，该芯片600还可以包括输出接口640。其中，处理器610可以控制该输出接口640与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
可选地，该芯片可应用于本申请实施例中的终端设备，并且该芯片可以实现本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
图9是本申请实施例提供的一种通信系统700的示意性框图。如图9所示，该通信系统700包括第一终端设备710和第二终端设备720。
其中，该第一终端设备710可以用于实现上述方法中由第一终端设备实现的相应的功能，以及该第二终端设备720可以用于实现上述方法中由第二终端设备实现的相应的功能为了简洁，在此不再赘述。
应理解，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
应理解，本申请实施例的处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读 存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种计算机可读存储介质，用于存储计算机程序。
可选的，该计算机可读存储介质可应用于本申请实施例中的网络设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机可读存储介质可应用于本申请实施例中的终端设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序产品，包括计算机程序指令。
可选的，该计算机程序产品可应用于本申请实施例中的网络设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序产品可应用于本申请实施例中的终端设备，并且 该计算机程序指令使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序。
可选的，该计算机程序可应用于本申请实施例中的网络设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序可应用于本申请实施例中的终端设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由终端设备实现的相应流程，为了简洁，在此不再赘述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，)ROM、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (50)

  1. 一种侧行通信的方法，其特征在于，包括：
    第一终端设备接收第二终端设备发送的侧行链路控制信息SCI；
    所述第一终端设备根据所述SCI，获取侧行参考信号的信息。
  2. 根据权利要求1所述的方法，其特征在于，所述SCI包括第一指示域，所述第一终端设备根据所述SCI，获取所述侧行参考信号的信息，包括：
    所述第一终端设备根据所述第一指示域，确定所述SCI包括所述侧行参考信号的资源指示信息。
  3. 根据权利要求1或2所述的方法，其特征在于，所述SCI包括第二指示域，所述方法还包括：
    所述第一终端设备根据所述第二指示域，确定所述SCI是否包括数据信道的资源指示信息。
  4. 根据权利要求2或3所述的方法，其特征在于，所述侧行参考信号的资源指示信息用于指示所述侧行参考信号的时域资源和/或频域资源。
  5. 根据权利要求4所述的方法，其特征在于，所述侧行参考信号的资源指示信息包括以下信息中的至少一种：
    所述侧行参考信号的时隙指示信息、所述侧行参考信号的时域符号指示信息、所述侧行参考信号的频域起始位置指示信息和所述侧行参考信号的频域长度信息。
  6. 根据权利要求5所述的方法，其特征在于，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的时隙指示信息且不包括所述侧行参考信号的时域符号指示信息，所述方法还包括：
    所述第一终端设备根据协议预配置信息或网络设备配置信息，确定所述侧行参考信号在时隙中占据的时域符号。
  7. 根据权利要求5所述的方法，其特征在于，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的时域符号指示信息且不包括所述侧行参考信号的时隙指示信息，所述方法还包括：
    所述第一终端设备将承载所述SCI的物理侧行控制信道PSCCH所在的时隙确定为所述侧行参考信号所在的时隙。
  8. 根据权利要求5至7中任一项所述的方法，其特征在于，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的频域起始位置指示信息且不包括所述侧行参考信号的频域长度信息，所述方法还包括：
    所述第一终端设备根据协议预配置信息或网络设备配置信息，确定所述侧行参考信号的频域长度。
  9. 根据权利要求5至7中任一项所述的方法，其特征在于，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的频域长度信息且不包括所述侧行参考信号的频域起始位置指示信息，所述方法还包括：
    所述第一终端设备根据承载所述SCI的物理侧行控制信道PSCCH的频域起始位置，确定所述侧行参考信号的频域起始位置。
  10. 根据权利要求1至9中任一项所述的方法，其特征在于，所述侧行参考信号包括侧行信道状态信息参考信号CSI-RS。
  11. 一种侧行通信的方法，其特征在于，包括：
    第二终端设备向第一终端设备侧行链路控制信息SCI，所述SCI用于所述第一终端设备获取侧行参考信号的信息。
  12. 根据权利要求11所述的方法，其特征在于，所述SCI包括第一指示域，所述第一指示域用于所述第一终端设备确定所述侧行参考信号的资源指示信息。
  13. 根据权利要求11或12所述的方法，其特征在于，所述SCI包括第二指示域，所述第二指示域用于指示所述SCI是否包括数据信道的资源指示信息。
  14. 根据权利要求12或13所述的方法，其特征在于，所述侧行参考信号的资源指示信息用于指示所述侧行参考信号的时域资源和/或频域资源。
  15. 根据权利要求14所述的方法，其特征在于，所述侧行参考信号的资源指示信息包括以下信息中的至少一种：
    所述侧行参考信号的时隙指示信息、所述侧行参考信号的时域符号指示信息、所述侧行参考信号的频域起始位置指示信息和侧行参考信号的频域长度信息。
  16. 根据权利要求15所述的方法，其特征在于，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的时隙指示信息且不包括所述侧行参考信号的时域符号指示信息，所述侧行参考信号在时隙中占据的时域符号是由协议预配置信息或网络设备配置信息确定的。
  17. 根据权利要求15所述的方法，其特征在于，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的时域符号指示信息且不包括所述侧行参考信号的时隙指示信息，所述侧行参考信号与承载所述SCI的物理侧行控制信道PSCCH在同一个时隙内。
  18. 根据权利要求15至17中任一项所述的方法，其特征在于，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的频域起始位置指示信息且不包括所述侧行参考信号的频域长度信息，所述侧行参考信号的频域长度信息是由协议预配置信息或网络设备配置信息确定的。
  19. 根据权利要求15至17中任一项所述的方法，其特征在于，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的频域长度信息且不包括所述侧行参考信号的频域起始位置指示信息，所述侧行参考信号的频域起始位置是根据承载所述SCI的物理侧行控制信道PSCCH的频域起始位置确定的。
  20. 根据权利要求11至19中任一项所述的方法，其特征在于，所述侧行参考信号包括侧行信道状态信息参考信号CSI-RS。
  21. 一种终端设备，其特征在于，所述终端设备为第一终端设备，包括：
    收发单元，用于接收第二终端设备发送的侧行链路控制信息SCI；
    处理单元，用于根据所述SCI，获取侧行参考信号的信息。
  22. 根据权利要求21所述的终端设备，其特征在于，所述SCI包括第一指示域，所述处理单元具体用于：
    根据所述第一指示域，确定所述SCI包括所述侧行参考信号的资源指示信息。
  23. 根据权利要求21或22所述的终端设备，其特征在于，所述SCI包括第二指示域，所述处理单元还用于：
    根据所述第二指示域，确定所述SCI是否包括数据信道的资源指示信息。
  24. 根据权利要求22或23所述的终端设备，其特征在于，所述侧行参考信号的资源指示信息用于指示所述侧行参考信号的时域资源和/或频域资源。
  25. 根据权利要求24所述的终端设备，其特征在于，所述侧行参考信号的资源指示信息包括以下信息中的至少一种：
    所述侧行参考信号的时隙指示信息、所述侧行参考信号的时域符号指示信息、所述侧行参考信号的频域起始位置指示信息和所述侧行参考信号的频域长度信息。
  26. 根据权利要求25所述的终端设备，其特征在于，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的时隙指示信息且不包括所述侧行参考信号的时域符号指示信息，所述处理单元还用于：
    根据协议预配置信息或网络设备配置信息，确定所述侧行参考信号在时隙中占据的时域符号。
  27. 根据权利要求25所述的终端设备，其特征在于，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的时域符号指示信息且不包括所述侧行参考信号的时隙指示信息，所述处理单元还用于：
    将承载所述SCI的物理侧行控制信道PSCCH所在的时隙确定为所述侧行参考信号所在的时隙。
  28. 根据权利要求25至27中任一项所述的终端设备，其特征在于，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的频域起始位置指示信息且不包括所述侧行参考信号的频域长度信息，所述处理单元还用于：
    根据协议预配置信息或网络设备配置信息，确定所述侧行参考信号的频域长度。
  29. 根据权利要求25至27中任一项所述的终端设备，其特征在于，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的频域长度信息且不包括所述侧行参考信号的频域起始位置指示信息，所述处理单元还用于：
    根据承载所述SCI的物理侧行控制信道PSCCH的频域起始位置，确定所述侧行参考信号的频域起始位置。
  30. 根据权利要求21至29中任一项所述的终端设备，其特征在于，所述侧行参考信号包括侧行信道状态信息参考信号CSI-RS。
  31. 一种终端设备，其特征在于，所述终端设备为第二终端设备，包括：
    收发单元，用于向第一终端设备侧行链路控制信息SCI，所述SCI用于所述第一终端设备获取侧行参考信号的信息。
  32. 根据权利要求31所述的终端设备，其特征在于，所述SCI包括第一指示域，所述第一指示域用于所述第一终端设备确定所述侧行参考信号的资源指示信息。
  33. 根据权利要求31或32所述的终端设备，其特征在于，所述SCI包括第二指示域，所述第二指示域用于指示所述SCI是否包括数据信道的资源指示信息。
  34. 根据权利要求32或33所述的终端设备，其特征在于，所述侧行参考信号的资源指示信息用于指示所述侧行参考信号的时域资源和/或频域资源。
  35. 根据权利要求34所述的终端设备，其特征在于，所述侧行参考信号的资源指示信息包括以下信息中的至少一种：
    所述侧行参考信号的时隙指示信息、所述侧行参考信号的时域符号指示信息、所述侧行参考信号的频域起始位置指示信息和侧行参考信号的频域长度信息。
  36. 根据权利要求35所述的终端设备，其特征在于，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的时隙指示信息且不包括所述侧行参考信号的时域符号指示信息，所述侧行参考信号在时隙中占据的时域符号是由协议预配置信息或网络设备配置信息确定的。
  37. 根据权利要求35所述的终端设备，其特征在于，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的时域符号指示信息且不包括所述侧行参考信号的时隙指示信息，所述侧行参考信号与承载所述SCI的物理侧行控制信道PSCCH在同一个时隙内。
  38. 根据权利要求35至37中任一项所述的终端设备，其特征在于，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的频域起始位置指示信息且不包括所述侧行参考信号的频域长度信息，所述侧行参考信号的频域长度信息是由协议预配置信息或网络设备配置信息确定的。
  39. 根据权利要求35至37中任一项所述的终端设备，其特征在于，若所述侧行参考信号的资源指示信息包括所述侧行参考信号的频域长度信息且不包括所述侧行参考信号的频域起始位置指示信息，所述侧行参考信号的频域起始位置是根据承载所述SCI的物理侧行控制信道PSCCH的频域起始位置确定的。
  40. 根据权利要求31至39中任一项所述的终端设备，其特征在于，所述侧行参考信号包括侧行信道状态信息参考信号CSI-RS。
  41. 一种终端设备，其特征在于，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至10中任一项所述的方法。
  42. 一种终端设备，其特征在于，包括：处理器和存储器，该存储器用 于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求11至20中任一项所述的方法。
  43. 一种芯片，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求1至10中任一项所述的方法。
  44. 一种芯片，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行如权利要求11至20中任一项所述的方法。
  45. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求1至10中任一项所述的方法。
  46. 一种计算机可读存储介质，其特征在于，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求11至20中任一项所述的方法。
  47. 一种计算机程序产品，其特征在于，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求1至10中任一项所述的方法。
  48. 一种计算机程序产品，其特征在于，包括计算机程序指令，该计算机程序指令使得计算机执行如权利要求11至20中任一项所述的方法。
  49. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求1至10中任一项所述的方法。
  50. 一种计算机程序，其特征在于，所述计算机程序使得计算机执行如权利要求11至20中任一项所述的方法。
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