WO2024026772A1 - 无线通信的方法和终端设备 - Google Patents

无线通信的方法和终端设备 Download PDF

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Publication number
WO2024026772A1
WO2024026772A1 PCT/CN2022/110302 CN2022110302W WO2024026772A1 WO 2024026772 A1 WO2024026772 A1 WO 2024026772A1 CN 2022110302 W CN2022110302 W CN 2022110302W WO 2024026772 A1 WO2024026772 A1 WO 2024026772A1
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Prior art keywords
prs
pscch
information
resource
prb
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PCT/CN2022/110302
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English (en)
French (fr)
Inventor
马腾
张世昌
赵振山
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Oppo广东移动通信有限公司
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Priority to PCT/CN2022/110302 priority Critical patent/WO2024026772A1/zh
Publication of WO2024026772A1 publication Critical patent/WO2024026772A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation

Definitions

  • the embodiments of the present application relate to the field of communications, and specifically relate to a wireless communication method and terminal equipment.
  • PRS positioning reference signals
  • SL-PRS sidelink
  • This application provides a wireless communication method and terminal equipment, by designing the physical side control channel PSCCH, for scheduling or indicating SL-PRS.
  • a wireless communication method including: a first terminal transmits a physical sidelink control channel PSCCH, where the PSCCH includes first indication information, and the first indication information is used to indicate a sidelink positioning reference signal SL. -PRS.
  • a wireless communication method including: a second terminal receiving a physical sidelink control channel PSCCH, where the PSCCH includes first indication information, and the first indication information is used to indicate a sidelink positioning reference signal SL. -PRS; receive SL-PRS according to the first indication information.
  • a wireless communication method including: a first terminal obtains side-link positioning reference signal SL-PRS related information; and sends the SL-PRS according to the SL-PRS related information.
  • a wireless communication method including: the second terminal obtains side-link positioning reference signal SL-PRS related information; and receives the SL-PRS according to the SL-PRS related information.
  • a fifth aspect provides a terminal device for executing the method in the above first aspect or its respective implementations.
  • the terminal device includes a functional module for executing the method in the above-mentioned first aspect or third aspect or respective implementations thereof.
  • a sixth aspect provides a network device for executing the method in the above second aspect or its respective implementations.
  • the network device includes a functional module for executing the method in the above-mentioned second aspect or fourth aspect or respective implementations thereof.
  • a terminal device including a processor and a memory.
  • the memory is used to store computer programs
  • the processor is used to call and run the computer programs stored in the memory, and execute the methods in the above-mentioned first aspect or third aspect or respective implementations thereof.
  • a network device including a processor and a memory.
  • the memory is used to store computer programs
  • the processor is used to call and run the computer programs stored in the memory, and execute the methods in the above-mentioned second aspect or fourth aspect or respective implementations thereof.
  • a ninth aspect provides a chip for implementing any one of the above-mentioned first to fourth aspects or the method in each implementation manner thereof.
  • the chip includes: a processor, configured to call and run a computer program from a memory, so that the device installed with the device executes any one of the above-mentioned first to fourth aspects or implementations thereof. method.
  • a computer-readable storage medium for storing a computer program, the computer program causing the computer to execute any one of the above-mentioned first to fourth aspects or the method in each implementation manner thereof.
  • a computer program product including computer program instructions, which cause a computer to execute any one of the above-mentioned first to fourth aspects or the method in each implementation thereof.
  • a twelfth aspect provides a computer program that, when run on a computer, causes the computer to execute any one of the above-mentioned first to fourth aspects or the method in each implementation thereof.
  • the physical sidelink control channel PSCCH is designed to schedule or indicate SL-PRS, so that the sending end can indicate SL-PRS to the receiving end through PSCCH.
  • the receiving end can receive SL-PRS according to PSCCH. Further, the receiving end can perform positioning based on SL-PRS.
  • Figure 1 is a schematic diagram of a communication system architecture applied in an embodiment of the present application.
  • FIG. 2 is a schematic diagram of another communication system architecture applied in the embodiment of the present application.
  • Figure 3 is a schematic diagram of intra-network communication provided by this application.
  • Figure 4 is a schematic diagram of partial network coverage sidelink communication provided by this application.
  • Figure 5 is a schematic diagram of a network coverage outer row communication provided by this application.
  • Figure 6 is a schematic diagram of side communication with a central control node provided by this application.
  • Figure 7 is a schematic diagram of a unicast side-link communication provided by this application.
  • Figure 8 is a schematic diagram of a multicast side communication provided by this application.
  • Figure 9 is a schematic diagram of a broadcast side communication provided by this application.
  • Figure 10 is a schematic diagram of the time slot structure in NR-V2X.
  • Figure 11 is a schematic diagram of the number of OFDM symbols available for the nth transmission and the n+1th transmission of PSSCH.
  • Figure 12 is a schematic diagram of a second-order SCI mapping method.
  • Figure 13 is a schematic diagram of the time and frequency domain position of PSCCH DMRS.
  • Figure 14 is a schematic diagram of the time domain positions of 4 DMRS symbols when the PSSCH has 13 symbols.
  • Figure 15 is a schematic diagram of single-symbol DMRS frequency domain type 1.
  • Figure 16 is a schematic interaction diagram of a wireless communication method provided by an embodiment of the present application.
  • Figure 17 is a schematic structural diagram of a PSCCH provided according to an embodiment of the present application.
  • Figure 18 is a schematic structural diagram of another PSCCH provided according to an embodiment of the present application.
  • Figure 19 is a schematic diagram of frequency division multiplexing of PSCCH and SL-PRS through a comb structure according to an embodiment of the present application.
  • Figure 20 is a schematic diagram of frequency division multiplexing of PSCCH and DMRS through a comb structure according to an embodiment of the present application.
  • Figure 21 is a schematic interaction diagram of another wireless communication method according to an embodiment of the present application.
  • Figure 22 is a schematic structural diagram of an SL-PRS according to an embodiment of the present application.
  • Figure 23 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.
  • Figure 24 is a schematic block diagram of another terminal device provided according to an embodiment of the present application.
  • Figure 25 is a schematic block diagram of yet another terminal device provided according to an embodiment of the present application.
  • Figure 26 is a schematic block diagram of yet another terminal device provided according to an embodiment of the present application.
  • Figure 27 is a schematic block diagram of a communication device provided according to an embodiment of the present application.
  • Figure 28 is a schematic block diagram of a chip provided according to an embodiment of the present application.
  • Figure 29 is a schematic block diagram of a communication system provided according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA broadband code division multiple access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced long term evolution
  • NR New Radio
  • NTN Non-Terrestrial Networks
  • UMTS Universal Mobile Telecommunication System
  • WLAN Wireless Local Area Networks
  • WiFi wireless fidelity
  • 5G fifth-generation communication
  • the communication system in the embodiment of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) deployment scenario.
  • CA Carrier Aggregation
  • DC Dual Connectivity
  • SA standalone deployment scenario.
  • the communication system in the embodiment of the present application can be applied to the unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or the communication system in the embodiment of the present application can also be applied to the licensed spectrum, where, Licensed spectrum can also be considered as unshared spectrum.
  • the embodiments of this application describe various embodiments in combination with network equipment and terminal equipment.
  • the terminal equipment may also be called user equipment (User Equipment, UE), 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, etc.
  • User Equipment User Equipment
  • the terminal device can be a station (STATION, ST) in the WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, or a personal digital assistant.
  • PDA Personal Digital Assistant
  • handheld devices with wireless communication capabilities computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or in the future Terminal equipment in the evolved Public Land Mobile Network (PLMN) network, etc.
  • PLMN Public Land Mobile Network
  • the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites). superior).
  • the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, or an augmented reality (Augmented Reality, AR) terminal.
  • Equipment wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home, etc.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones.
  • the network device may be a device used to communicate with mobile devices.
  • the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA.
  • BTS Base Transceiver Station
  • it can be a base station (NodeB, NB) in WCDMA, or an evolutionary base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network network equipment or base station (gNB) or network equipment in the future evolved PLMN network or network equipment in the NTN network, etc.
  • NodeB base station
  • gNB NR network network equipment or base station
  • the network device may have mobile characteristics, for example, the network device may be a mobile device.
  • the network device can be a satellite or balloon station.
  • the satellite can be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite ) satellite, etc.
  • the network device may also be a base station installed on land, water, etc.
  • network equipment can provide services for a cell, and terminal equipment communicates with the network equipment through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell.
  • the cell can be a network equipment ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell).
  • the small cell here can include: urban cell (Metro cell), micro cell (Micro cell), pico cell ( Pico cell), femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission services.
  • the "instruction” mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation.
  • correlate can mean that there is a direct correspondence or indirect correspondence between the two, it can also mean that there is an associated relationship between the two, or it can mean indicating and being instructed, configuration and being. Configuration and other relationships.
  • predefinition or “preconfiguration” can be achieved by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices).
  • devices for example, including terminal devices and network devices.
  • predefined can refer to what is defined in the protocol.
  • the "protocol” may refer to a standard protocol in the communication field, which may include, for example, LTE protocol, NR protocol, and related protocols applied in future communication systems. This application does not limit this.
  • FIG. 1 is a schematic diagram of a communication system applicable to the embodiment of the present application.
  • the transmission resources of the vehicle-mounted terminals (vehicle-mounted terminal 121 and vehicle-mounted terminal 122) are allocated by the base station 110, and the vehicle-mounted terminals transmit data on the sidelink according to the resources allocated by the base station 110.
  • the base station 110 may allocate resources for a single transmission to the terminal, or may allocate resources for semi-static transmission to the terminal.
  • FIG. 2 is a schematic diagram of another communication system applicable to the embodiment of the present application.
  • the vehicle-mounted terminals (vehicle-mounted terminal 131 and vehicle-mounted terminal 132) independently select transmission resources on the resources of the side link for data transmission.
  • the vehicle-mounted terminal can select transmission resources randomly or select transmission resources through listening.
  • side-link communication according to the network coverage of the communicating terminal, it can be divided into side-link communication with network coverage, as shown in Figure 3; side-link communication with partial network coverage, as shown in Figure 4 ; and network coverage outer row communication, as shown in Figure 5.
  • Figure 3 In side-link communication within network coverage, all terminals performing side-link communication are within the coverage of the base station. Therefore, the above-mentioned terminals can perform side-link communication based on the same side-link configuration by receiving configuration signaling from the base station. .
  • FIG 4 When part of the network covers side-link communication, some terminals performing side-link communication are located within the coverage of the base station. These terminals can receive the configuration signaling of the base station and perform side-link communication according to the configuration of the base station. The terminal located outside the network coverage cannot receive the configuration signaling of the base station. In this case, the terminal outside the network coverage will use the pre-configuration information and the physical signal sent by the terminal located within the network coverage.
  • the information carried in the Physical Sidelink Broadcast Channel (PSBCH) determines the sidelink configuration and performs sidelink communication.
  • PSBCH Physical Sidelink Broadcast Channel
  • Figure 5 For side-link communication outside network coverage, all terminals performing side-link communication are located outside the network coverage, and all terminals determine the side-link configuration based on pre-configuration information for side-link communication.
  • FIG. 6 For side-line communication with a central control node, multiple terminals form a communication group.
  • the communication group has a central control node, which can also be called the cluster head terminal (Cluster Header, CH).
  • the central control node has the following One of the functions: Responsible for the establishment of communication groups; joining and leaving group members; coordinating resources, allocating sideline transmission resources to other terminals, receiving sideline feedback information from other terminals; coordinating resources with other communication groups, etc.
  • device-to-device communication is a Sidelink (SL) transmission technology based on Device to Device (D2D), which is different from the traditional cellular system in which communication data is received or sent through the base station.
  • SL Sidelink
  • D2D Device to Device
  • the methods are different.
  • the Internet of Vehicles system uses end-to-end direct communication, so it has higher spectrum efficiency and lower transmission delay.
  • the transmission resources of the terminal are allocated by the base station, and the terminal transmits data on the sidelink according to the resources allocated by the base station; the base station can allocate resources for a single transmission to the terminal, or can allocate semi-static transmission to the terminal.
  • the terminal is located within the network coverage, and the network allocates transmission resources for sidelink transmission to the terminal.
  • the terminal selects a resource in the resource pool for data transmission. As shown in Figure 5, the terminal is located outside the cell coverage, and the terminal independently selects transmission resources from the preconfigured resource pool for sideline transmission; or, as shown in Figure 3, the terminal independently selects transmission resources from the network configured resource pool. Perform lateral transmission.
  • NR-V2X New Radio-Vehicle to Everything
  • autonomous driving is supported, which puts forward higher requirements for data interaction between vehicles, such as higher throughput, lower latency, higher reliability, larger coverage, more flexible resource allocation, etc.
  • unicast transmission there is only one receiving terminal.
  • the receiving terminal is all terminals in a communication group, or in a certain All terminals within the transmission distance, as shown in Figure 8, UE1, UE2, UE3 and UE4 form a communication group, in which UE1 sends data, and other terminal devices in the group are receiving terminals; for broadcast transmission methods, their receiving terminals
  • the terminal is any terminal around the sending terminal.
  • UE1 is the sending terminal, and the other terminals around it, UE2-UE6, are all receiving terminals.
  • the time slot structure in NR-V2X is shown in Figure 10.
  • (a) in Figure 10 represents the time slot structure that does not include the physical sidelink feedback channel (PSFCH) in the time slot;
  • (a) in Figure 10 b) Indicates the slot structure including PSFCH.
  • PSFCH physical sidelink feedback channel
  • the Physical Sidelink Control Channel starts from the second sidelink symbol of the time slot in the time domain and occupies 2 or 3 orthogonal frequency division multiplexing (Orthogonal frequency- division multiplexing (OFDM) symbols can occupy ⁇ 10,12 15,20,25 ⁇ physical resource blocks (PRB) in the frequency domain.
  • OFDM orthogonal frequency- division multiplexing
  • PSSCH physical sidelink shared channel
  • the sub-channel is the minimum granularity of physical sidelink shared channel (PSSCH) resource allocation in NR-V2X
  • the number of PRBs occupied by PSCCH must be less than or equal to the number of PRBs contained in a sub-channel in the resource pool. , so as not to cause additional restrictions on PSSCH resource selection or allocation.
  • PSSCH also starts from the second sidelink symbol of the time slot in the time domain.
  • the last time domain symbol in the time slot is the Guard Period (GP) symbol, and the remaining symbols are mapped to the PSSCH.
  • the first siderow symbol in this time slot is a repetition of the second siderow symbol.
  • the receiving terminal uses the first siderow symbol as an automatic gain control (Auto gain control, AGC) symbol.
  • AGC automatic gain control
  • the data is generally not used for data demodulation.
  • PSSCH occupies M sub-channels in the frequency domain, and each sub-channel includes N consecutive PRBs. As shown in
  • the penultimate symbol and the penultimate symbol in the time slot are used as PSFCH channel transmission, and the data on the penultimate symbol is a repetition of the data on the penultimate symbol.
  • One time domain symbol before the PSFCH channel is used as a GP symbol, as shown in (b) in Figure 10.
  • PSSCH physical sidelink shared channel
  • PSSCH is used to carry second-level sidelink control information (Sidelink Control Information, SCI) (such as SCI 2-A or SCI 2-B) and data information.
  • SCI Systemlink Control Information
  • the second-order SCI adopts Polar coding method and fixedly adopts Quadrature Phase Shift Keying (QPSK) modulation.
  • QPSK Quadrature Phase Shift Keying
  • the data part of PSSCH uses Low Density Parity Check (LDPC), and the highest modulation order supported is 256 Quadrature Amplitude Modulation (256QAM).
  • LDPC Low Density Parity Check
  • 256QAM Quadrature Amplitude Modulation
  • PSSCH supports up to two stream transmissions, and uses a unit precoding matrix to map data on two layers to two antenna ports. Only one transport block (TB) can be sent in one PSSCH. ). However, unlike the transmission method of the PSSCH data part, when the PSSCH adopts the dual-stream transmission method, the modulation symbols sent by the second-order SCI on the two streams are exactly the same. This design can ensure the performance of the second-order SCI under high correlation channels. reception performance.
  • the OFDM symbols available in the time slots where different transmissions of a PSSCH are located Changes may occur, as shown in Figure 11. If calculated according to the actual number of OFDM symbols in a time slot Q′ SCI2 may be different due to the different number of symbols available for PSSCH transmission in a time slot, and changes in Q′ SCI2 will cause changes in the size of the TB carried by PSSCH, as described below.
  • the code rate of the second-order SCI can be dynamically adjusted within a certain range.
  • the specific code rate used is indicated by the first-order SCI, so the receiving end does not need to blindly detect the second-order SCI even after the code rate changes.
  • the modulation symbols of the second-order SCI are mapped from the symbol where the first PSSCH Demodulation Reference Signal (DMRS) is located in the frequency domain first and then the time domain.
  • the second-order SCI is mapped on the OFDM symbol where the DMRS is located. to REs not occupied by DMRS, as shown in Figure 12.
  • the data part of PSSCH in a resource pool can use multiple different modulation and coding scheme (Modulation and Coding Scheme, MCS) tables, including conventional 64QAM MCS table, 256QAM MCS table and low spectrum efficiency 64QAM MCS table, and in one transmission, specific
  • MCS table used is indicated by the "MCS table indication" field in the first-level SCI.
  • PAPR Peak to Average Power Ratio
  • PSSCH In order to control the Peak to Average Power Ratio (PAPR), PSSCH must use continuous PRB transmission. Since the sub-channel is the minimum frequency domain resource granularity of PSSCH, this requires PSSCH to occupy continuous sub-channels.
  • TBS Transmission Block Size
  • PSSCH follows the transmission block size (TBS) determination mechanism of the Physical Downlink Shared Channel (PDSCH) and Physical Uplink Shared Channel (PUSCH) in the NR system, that is, based on the time slot where the PSSCH is located.
  • TBS transmission block size
  • the reference value of the number of REs of the PSSCH determines the TBS, so that the actual code rate is as close as possible to the target code rate.
  • the purpose of using the reference value of the number of REs instead of the actual number of REs here is to ensure that the number of REs used to determine the TBS remains unchanged during the PSSCH retransmission process, so that the size of the determined TBSs is the same.
  • the reference value N RE of the number of REs occupied by PSSCH is determined according to formula (1):
  • n PRB is the number of PRBs occupied by PSSCH
  • N′ RE represents the number of reference REs that can be used for PSSCH in a PRB, and is determined by formula (2):
  • the specific value is indicated by the "PSFCH symbol number" field in the first-order SCI, which is a reference value for the number of symbols occupied by PSFCH;
  • the value is configured by Radio Resource Control (RRC) layer parameters and is used to represent the reference value for the number of REs occupied by PT-RS and CSI-RS;
  • RRC Radio Resource Control
  • the DMRS pattern of PSCCH is the same as the NR downlink control channel (Physical Downlink Control Channel, PDCCH), that is, DMRS exists on each OFDM symbol of PSCCH and is located in the frequency domain of a PRB. 5, #9 ⁇ REs, as shown in Figure 13.
  • the DMRS sequence of PSCCH is generated by formula (3):
  • the pseudo-random sequence c(m) is given by Initialize, where l is the index of the OFDM symbol in the slot where the DMRS is located, is the index of the DMRS time slot in the system frame, Indicates the number of OFDM symbols in a time slot, N ID ⁇ ⁇ 0,1,L,65535 ⁇ .
  • N ID the index of the OFDM symbol in the slot where the DMRS is located
  • N ID the index of the DMRS time slot in the system frame
  • NR-V2X draws on the design of the NR Uu interface and uses multiple time domain PSSCH DMRS patterns.
  • the number of DMRS patterns that can be used is related to the number of PSSCH symbols in the resource pool.
  • the available DMRS patterns and each The positions of DMRS symbols are shown in Table 2.
  • Figure 14 shows a schematic diagram of the time domain positions of 4 DMRS symbols when the number of PSSCH symbols is 13.
  • the specific time domain DMRS pattern used is selected by the sending UE and indicated in the first-level SCI.
  • Such a design allows high-speed moving UEs to select high-density DMRS patterns to ensure the accuracy of channel estimation, while for low-speed moving UEs, low-density DMRS patterns can be used to improve spectral efficiency.
  • PSSCH DMRS sequence is almost the same as that of PSCCH DMRS sequence.
  • NR PDSCH and PUSCH support two frequency domain DMRS patterns, namely DMRS frequency domain type 1 and DMRS frequency domain type 2, and for each frequency domain type, there are two different types: single DMRS symbol and dual DMRS symbol.
  • Single-symbol DMRS frequency domain type 1 supports 4 DMRS ports
  • single-symbol DMRS frequency domain type 2 can support 6 DMRS ports, and in the case of dual DMRS symbols, the number of supported ports doubles.
  • PSSCH only needs to support up to two DMRS ports, only single-symbol DMRS frequency domain type 1 is supported, as shown in Figure 15.
  • PRS positioning reference signals
  • SL-PRS sidelink
  • Figure 16 is a schematic interaction diagram of a wireless communication method 200 according to an embodiment of the present application. As shown in Figure 16, the method 200 includes at least part of the following content:
  • the first terminal sends the physical sidelink control channel PSCCH, where the PSCCH includes first indication information, and the first indication information is used to indicate (or, in other words, schedule) the sidelink positioning reference signal SL-PRS.
  • the second terminal receives the PSCCH and receives the SL-PRS according to the first indication information.
  • the time-frequency resource information of the PSCCH is determined based on preconfiguration information, or based on the configuration information of the network device.
  • the sidelink bandwidth part (Band Width Part, BWP) configuration may include PRB resource information occupied by the PSCCH.
  • the network device configures the resource pool on the sidelink BWP, it can exclude the PRB resources occupied by the PSCCH.
  • the sidelink BWP configuration is used to configure the association between the first resource pool and PRB resources, and the first resource pool does not include the PRB resources occupied by the PSCCH, where the first resource pool is the resource pool on the sidelink BWP.
  • the resource pool used to transmit SL-PRS and the resource pool used to transmit sidelink channels are shared, denoted as Case 1.
  • the side channels here may include PSCCH and PSSCH.
  • the resource pool used to transmit SL-PRS and the resource pool used to transmit sidelink channels are independent, which is noted as case 2. That is, the resource pool used to transmit SL-PRS is a dedicated resource pool, and this resource pool is only used to send SL-PRS.
  • the side channels here may include PSCCH and PSSCH.
  • the PSCCH indicating SL-PRS can be consistent with the PSCCH format or structure in the backward sidelink technology. Using this method is beneficial to ensuring that terminals using the backward sidelink technology can During the SL sensing process, the resources occupied by SL-PRS are learned by decoding PSCCH, and further the resources occupied by SL-PRS are excluded during resource selection to avoid resource conflicts.
  • the PSCCH indicating SL-PRS may also adopt a new PSCCH format or structure, for example, the number of terminals using backward sidelink technology in the shared resource pool is small and/or This method is used when the business priority is low. It is helpful to reduce the probability of resource collision.
  • the PSCCH of SL-PRS can adopt a new PSCCH format or structure.
  • PSCCH is used to indicate SL-PRS.
  • the PSCCH is used to indicate SL-PRS.
  • PSCCH is used to indicate SL-PRS and PSSCH.
  • PSCCH and PSSCH there can be transmission of PSCCH and PSSCH in traditional sidelink technology, where the PSCCH is used to indicate PSSCH, and there can also be transmission of PSCCH, PSSCH and SL-PRS in new sidelink technology. , where the PSCCH is used to indicate SL-PRS and PSSCH.
  • the above traditional sidelink technology can refer to the sidelink technology before the introduction of SL-PRS transmission
  • the new sidelink technology can refer to the sidelink technology after the introduction of SL-PRS transmission.
  • the first indication information is used to indicate SL-PRS related information, such as resource related information and/or sending port information. That is, the PSCCH can be used to indicate the resources and/or transmission port of the SL-PRS.
  • the resource-related information of SL-PRS includes but is not limited to at least one of the following information:
  • Time domain resource information frequency domain resource information
  • resource reservation information such as resource reservation period information
  • transmission period information transmission period information
  • this application does not limit the manner in which the SL-PRS related information is carried.
  • it can be carried through an indication domain, or it can also be carried through an independent indication domain.
  • the PSCCH may include a resource indication field for indicating at least one of time domain resource information, frequency domain resource information, resource reservation information and transmission cycle information of the SL-PRS.
  • the PSCCH may include at least one of the following indication fields:
  • Time domain resource assignment domain (Time resource assignment, or Time domain resource assignment), used to indicate the time domain resource information of SL-PRS;
  • Frequency domain resource assignment domain Frequency resource assignment domain (Frequency resource assignment, or Frequency domain resource assignment), used to indicate the frequency domain resource information of SL-PRS;
  • the resource reservation period (such as Resource reservation period) field is used to indicate the resource reservation period information of SL-PRS;
  • the transmission period field is used to indicate the transmission period information of SL-PRS.
  • PSCCH may support reserving resource locations for the next or next group (i.e., multiple) SL-PRS, that is, PSCCH supports reservation of SL-PRS resources, or may not support reservation of SL-PRS resources. reserve.
  • the PSCCH when the PSCCH does not support the reservation of SL-PRS resources, the PSCCH can be designed not to include the resource reservation field.
  • the PSCCH when the PSCCH supports the reservation of SL-PRS resources, the PSCCH can be designed to include the resource reservation field.
  • the PSCCH may also include a transmit port (antenna port(s)) field, used to indicate the transmit port information of the SL-PRS.
  • a transmit port antenna port(s)
  • the PSCCH occupies N OFDM symbols in a time slot in the time domain, where N is an integer greater than or equal to 1. That is, PSCCH can occupy one or more OFDM symbols in a time slot.
  • N is preconfigured, or N is configured by the network device.
  • the dedicated signaling may include but is not limited to Radio Resource Control (RRC) signaling, Media Access Control Control Element (MAC CE), and Downlink Control Information (Downlink Control Information). , DCI).
  • RRC Radio Resource Control
  • MAC CE Media Access Control Control Element
  • DCI Downlink Control Information
  • the SL-PRS occupies some or all of the other OFDM symbols (assuming the remaining Q OFDM symbols) in a timeslot except the N OFDM symbols occupied by the PSCCH.
  • SL-PRS occupies the Q OFDM symbols.
  • SL-PRS occupies P OFDM symbols among the Q OFDM symbols, and P is smaller than Q.
  • the resource pool of SL-PRS is the shared resource pool in the aforementioned case 1, part or all of the remaining Q-P OFDM symbols are used to transmit PSSCH.
  • the PSCCH occupies one OFDM symbol in one slot in the time domain.
  • the PSCCH occupies the first OFDM symbol in a slot available for sidelink transmission.
  • OFDM symbol #0 in a time slot is used as AGC
  • OFDM symbol #13 is used as GP
  • OFDM symbols #1 ⁇ #12 can be used for sidelink transmission
  • PSCCH can occupy OFDM symbol #1 ⁇
  • Figure 17 only uses the PSCCH to occupy the first OFDM symbol that can be used for sideline transmission.
  • the application is not limited to this.
  • the SL-PRS may occupy some or all of the OFDM symbols #2 to #12.
  • SL-PRS occupies OFDM symbols #2 to #10. If the resource pool of the SL-PRS is a shared resource pool, some or all of OFDM symbols #11 and #12 can be used to transmit PSSCH.
  • the PSCCH occupies all OFDM symbols available for sidelink transmission in a time slot in the time domain.
  • OFDM symbol #0 in a time slot is used as AGC
  • OFDM symbol #13 is used as GP
  • OFDM symbols #1 ⁇ #12 can be used for sidelink transmission
  • PSCCH can occupy OFDM symbol #1 ⁇ #12.
  • the PSCCH occupies M PRBs in the frequency domain, where M is an integer greater than or equal to 1.
  • the PSCCH has one or more PRBs in the frequency domain.
  • M max may be the maximum number of PRBs occupied by the PSCCH, that is, the maximum number of PRBs that the PSCCH can configure.
  • M max can be preconfigured, or configured by the network device.
  • M is preconfigured, or M is configured by the network device.
  • M is configured by the network device.
  • the dedicated signaling may include but is not limited to RRC signaling, MAC CE, and DCI.
  • the PSCCH occupies one PRB in the frequency domain.
  • Figure 18 is an example of a PSCCH format that occupies one PRB in the frequency domain provided by the embodiment of the present application. It should be understood that in the example of Figure 18, the PSCCH can occupy all OFDM symbols available for sidelink transmission in the time domain, or it can also occupy part of the OFDM symbols available for sidelink transmission, which is not limited in this application.
  • the PSCCH occupies the first PRB in the frequency domain, and the first PRB may be a PRB in the first sub-channel.
  • the first subchannel may be a subchannel allocated for sidelink transmission in the first resource pool.
  • the first resource pool may be the SL-PRS exclusive resource pool in the aforementioned case 2, or it may be the shared resource pool in case 1.
  • This application does not limit the specific position of the first sub-channel among the multiple sub-channels. For example, it may be the multiple sub-channels. Any sub-channel in the channel, or a specific sub-channel, etc.
  • the first subchannel is the smallest numbered subchannel among the plurality of subchannels used for sidelink transmission.
  • the first subchannel is a subchannel numbered X among the plurality of subchannels used for sidelink transmission, and X is an integer.
  • X is preconfigured, or configured by the network device.
  • the specific configuration method refer to the N or M configuration method, which will not be described again here.
  • the first PRB may be any PRB in the first sub-channel, or a specific PRB.
  • the first PRB is the PRB with the smallest number in the first sub-channel, or may be other PRB.
  • the first PRB may be the PRB numbered Y in the first sub-channel, where Y may be preconfigured or configured by the network device.
  • the SL-PRS occupies some or all of the other PRBs (denoted as L PRBs) in the subchannel available for sidelink transmission except the M PRBs occupied by the PSCCH.
  • SL-PRS occupies the L PRBs.
  • the SL-PRS occupies J PRBs out of L PRBs, where 1 ⁇ J ⁇ L.
  • the resource pool of the SL-PRS is the shared resource pool in the aforementioned case 1, part or all of the remaining L-J PRBs are used to transmit PSSCH.
  • the SL-PRS occupies some or all of the target time-frequency resources other than the time-frequency resources occupied by the PSCCH, where the target time-frequency resources are Time-frequency resources available for sidelink transmission.
  • the target time-frequency resource occupies A OFDM symbols in a time slot in the time domain and B PRBs in the frequency domain.
  • PSCCH occupies N OFDM symbols in a time slot in the time domain.
  • the SL-PRS occupies part or all of the remaining A-N OFDM symbols in the time domain, and occupies part or all of the remaining B-M PRBs in the frequency domain.
  • the SL-PRS occupies part of the target time-frequency resources other than the time-frequency resources occupied by the PSCCH. , then some or all of the other time-frequency resources in the target time-frequency resources except the time-frequency resources occupied by PSCCH and SL-PRS can be used to transmit PSSCH.
  • the PSCCH may include DMRS.
  • the PSCCH and DMRS are frequency division multiplexed in the frequency domain through a comb structure.
  • Figure 13 is a schematic diagram of frequency division multiplexing of PSCCH and DMRS through a comb structure.
  • the PSCCH may include DMRS.
  • the PSCCH and DMRS may adopt the comb structure shown in Figure 13.
  • the PSCCH includes DMRS, and the PSCCH is at least used to indicate the SL-PRS.
  • the PSCCH is also used to indicate the PSSCH.
  • the DMRS is used to demodulate the PSCCH
  • the SL-PRS is used to determine positioning information.
  • the PSCCH may include SL-PRS.
  • the PSCCH and SL-PRS are frequency division multiplexed in the frequency domain through a comb structure.
  • SL-PRS is used to demodulate the PSCCH.
  • the second terminal can demodulate the PSCCH according to the SL-PRS in the PSCCH, and can also determine positioning information according to the SL-PRS.
  • SL-PRS is used for absolute positioning, relative positioning, ranging or direction finding, etc.
  • the comb tooth combination occupied by PSCCH in the frequency domain and the comb tooth combination occupied by SL-PRS in the frequency domain are separated by K REs, where K is an integer greater than or equal to 2.
  • K is predefined, or K is configured by the network device.
  • the dedicated signaling may include but is not limited to RRC signaling, MAC CE, and DCI.
  • the combination of comb teeth occupied by PSCCH and the combination of comb teeth occupied by SL-PRS occupy one or more OFDM symbols in one time slot in the time domain, where the occupied OFDM symbols
  • the design of the symbols refers to the design of the number of OFDM symbols occupied by the PSCCH in the previous embodiment. For the sake of simplicity, details will not be described here.
  • Figure 19 is a schematic diagram of frequency division multiplexing of PSCCH and SL-PRS through a comb structure. It should be understood that Figure 19 only illustrates that the combination of comb teeth occupied by PSCCH and the combination of comb teeth occupied by SL-PRS are separated by 2 REs. In other embodiments, the combination of comb teeth occupied by PSCCH and the combination of comb teeth occupied by SL-PRS are separated by 2 REs. The combination of comb teeth can also be spaced by more REs, and the application is not limited thereto.
  • the PSCCH includes the SL-PRS
  • some or all of the other time-frequency resources in the target time-frequency resources except the time-frequency resources occupied by the PSCCH and the time-frequency resources occupied by the SL-PRS are also used for To send SL-PRS, or it may not be used to send SL-PRS
  • the target time-frequency resource is a time-frequency resource that can be used for sidelink transmission.
  • the target time-frequency resource is a time-frequency resource that can be used for sidelink transmission.
  • other time-frequency resources available for sidelink transmission are used to transmit SL-PRS. Of course, they may not be used.
  • time-frequency resources For transmitting SL-PRS, or part of the time-frequency resources is used for transmitting SL-PRS.
  • the resource pool of SL-PRS is a shared resource pool, and in addition to the time-frequency resources occupied by PSCCH and the time-frequency resources occupied by SL-PRS, there are other time-frequency resources available for sidelink transmission. , then part or all of these time-frequency resources can be used to transmit PSSCH.
  • DMRS is included in the PSCCH and is used as the SL-PRS. That is, the DMRS is used to demodulate the PSCCH and determine positioning information.
  • the sequence of the SL-PRS is the same as the DMRS sequence of the PSCCH.
  • the second terminal can use the DMRS of the PSCCH as the SL-PRS based on the received PSCCH, and further determine the positioning information based on the SL-PRS, such as calculating the Time of Arrival (TOA).
  • TOA Time of Arrival
  • the antenna port of the PSCCH and the antenna port of the SL-PRS are the same.
  • PSCCH and DMRS may be frequency division multiplexed through a comb structure in the frequency domain.
  • the comb tooth combination occupied by PSCCH in the frequency domain and the comb tooth combination occupied by DMRS in the frequency domain are separated by Z REs, where Z is an integer greater than or equal to 2.
  • Figure 20 is a schematic diagram of frequency division multiplexing of PSCCH and DMRS through a comb structure. It should be understood that Figure 20 only illustrates that the comb tooth combination occupied by PSCCH and the comb tooth combination occupied by DMRS are separated by 4 REs. In other embodiments, the comb tooth combination occupied by PSCCH and the comb tooth combination occupied by DMRS are separated by 4 REs. More REs may also be spaced, and the application is not limited thereto.
  • the combination of comb teeth occupied by PSCCH and the combination of comb teeth occupied by DMRS occupy one or more OFDM symbols in a time slot in the time domain, as shown in Figure 20, occupying 3 OFDM symbols. symbol.
  • some or all of the time-frequency resources other than PSCCH and DMRS in the target time-frequency resources may be used to transmit PSSCH, or may not be used to transmit PSSCH.
  • the transmitting end can use the PSCCH in the existing format to schedule or indicate the SL-PRS, or it can also use the PSCCH in the new format to schedule or indicate the SL-PRS, and the receiving end can receive the SL-PRS according to the PSCCH.
  • PRS further perform positioning based on the SL-PRS.
  • PSCCH can be designed as follows:
  • PSCCH can adopt existing format or structure.
  • the DMRS of the PSCCH can be used as the SL-PRS, that is, the DMRS is used to demodulate the PSCCH and determine positioning information, as shown in Figure 20.
  • PSCCH adopts a new format or structure.
  • the information domain included in PSCCH, the resources occupied by PSCCH, and the resources of SL-PRS were designed.
  • the PSCCH may include an indication field used to indicate resource-related information and/or transmission port information of the SL-PRS.
  • PSCCH occupies one OFDM symbol (as shown in Figure 17), or it can occupy multiple OFDM symbols.
  • PSCCH occupies one PRB in the frequency domain, and occupies all OFDM symbols available for sidelink transmission in a time slot in the time domain, as shown in Figure 18.
  • PSCCH and SL-PRS are frequency division multiplexed in the frequency domain through a comb structure, as shown in Figure 19.
  • PSCCH includes DMRS, and DMRS is used as SL-PRS.
  • FIG. 21 is a schematic interaction diagram of another wireless communication method 300 according to an embodiment of the present application. As shown in Figure 21, the method 300 includes at least part of the following content:
  • the first terminal obtains relevant information of the side row positioning reference signal SL-PRS;
  • the second terminal obtains relevant information of the side row positioning reference signal SL-PRS;
  • S330 The first terminal sends SL-PRS according to SL-PRS related information.
  • the second terminal receives the SL-PRS according to the SL-PRS related information.
  • SL-PRS is used to determine positioning information.
  • the resource pool of SL-PRS can be a dedicated resource pool, or it can also be a shared resource pool.
  • the relevant descriptions in case 1 and case 2 in method 200 please refer to the relevant descriptions in case 1 and case 2 in method 200. For the sake of brevity, it will not be discussed here. Repeat.
  • the SL-PRS related information includes one of the following:
  • Time domain resource information frequency domain resource information, resource reservation information, and transmission cycle information.
  • SL-PRS related information is preconfigured or configured by the network device. For example, configured through broadcast messages, or dedicated signaling.
  • SL-PRS occupies some or all of the orthogonal frequency division multiplexing OFDM symbols available for sidelink transmission in a time slot in the time domain.
  • OFDM symbol 0 in a time slot is used as AGC
  • OFDM symbol 13 is used as GP
  • OFDM symbols 1 to 12 can be used for sideline transmission
  • SL-PRS can occupy OFDM symbols 1 to 12.
  • Figure 22 only takes the example of SL-PRS occupying all OFDM symbols, but the application is not limited to this.
  • SL-PRS occupies some or all of the PRBs available for sidelink transmission in the frequency domain.
  • each sub-channel can include multiple PRBs, and the SL-PRS can occupy the multiple sub-channels. Some or all of the PRB resources included in the channel.
  • the SL-PRS may not be scheduled or indicated by the PSCCH.
  • the time slot in which the SL-PRS is located may not include the PSCCH.
  • the sending end and the receiving end may be configured according to the preset time slot. Configuration or network device configuration of SL-PRS related information to send and receive SL-PRS. Further, the receiving end can determine positioning information based on SL-PRS, such as absolute positioning, relative positioning, ranging or measurement based on SL-PRS. Xiang et al.
  • Figure 23 shows a schematic block diagram of a terminal device 1000 according to an embodiment of the present application.
  • the terminal device 1000 includes:
  • the communication unit 1010 is configured to send the physical sidelink control channel PSCCH, where the PSCCH includes first indication information, and the first indication information is used to indicate the sidelink positioning reference signal SL-PRS.
  • the first indication information is used to indicate resource-related information and/or transmission port information of the SL-PRS.
  • the resource-related information of the SL-PRS includes at least one of the following information:
  • Time domain resource information frequency domain resource information, resource reservation information, and transmission cycle information.
  • the resource-related information of the SL-PRS is carried in the same indication field of the PSCCH, or the resource-related information of the SL-PRS is carried in an independent indication field in the PSCCH.
  • the PSCCH occupies N orthogonal frequency division multiplexing OFDM symbols in one time slot in the time domain, where N is an integer greater than or equal to 1.
  • the PSCCH occupies the first OFDM symbol available for sidelink transmission in a time slot.
  • N is preconfigured, or N is configured by the network device.
  • the PSCCH occupies M physical resource blocks PRB in the frequency domain, where M is an integer greater than or equal to 1.
  • the PSCCH occupies a first PRB in the frequency domain, the first PRB belongs to a first resource pool, and the first PRB is the first PRB allocated for sidelink transmission in the first resource pool.
  • the first subchannel is the smallest numbered subchannel among multiple subchannels used for sidelink transmission.
  • the first PRB is a specific PRB in the first sub-channel.
  • the first PRB is the smallest numbered PRB in the first sub-channel; or,
  • the first PRB is preconfigured or determined according to network device configuration.
  • M is predefined, or M is configured by the network device.
  • the PSCCH occupies all OFDM symbols available for sidelink transmission in a time slot in the time domain.
  • the SL-PRS occupies some or all of the target time-frequency resources other than the time-frequency resources occupied by the PSCCH, wherein the target time-frequency resources are available Time-frequency resources for sidelink transmission.
  • the PSCCH and the SL-PRS are frequency division multiplexed in the frequency domain through a comb structure.
  • the SL-PRS is used to demodulate the PSCCH.
  • the comb combination occupied by the PSCCH in the frequency domain and the comb combination occupied by the SL-PRS in the frequency domain are separated by K resource units RE, where K is an integer greater than or equal to 2.
  • K is predefined, or K is configured by the network device.
  • some or all of the target time-frequency resources other than the time-frequency resources occupied by the PSCCH and the time-frequency resources occupied by the SL-PRS are also used to transmit SL -PRS, or is not used to send SL-PRS, and the target time-frequency resource is a time-frequency resource that can be used for sidelink transmission.
  • the PSCCH includes a demodulation reference signal DMRS, and the DMRS is used as the SL-PRS.
  • the antenna port of the PSCCH and the antenna port of the SL-PRS are the same.
  • the time-frequency resource information of the PSCCH is determined based on preconfiguration information, or based on configuration information of a network device.
  • the PRB resources occupied by the PSCCH are obtained through the sidelink bandwidth part BWP configuration.
  • the sidelink BWP configuration is used to configure the association between the first resource pool and the PRB resources.
  • the first resource pool does not Including PRB resources occupied by the PSCCH, wherein the first resource pool is a resource pool on the sidelink BWP.
  • the SL-PRS is used to determine positioning information.
  • the above-mentioned communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip.
  • terminal device 1000 may correspond to the first terminal in the method embodiment of the present application, and the above and other operations and/or functions of the various units in the terminal device 1000 are respectively to implement FIG. 16 to FIG.
  • the corresponding process of the first terminal in the method 200 shown in 20 is not repeated here for the sake of simplicity.
  • Figure 24 shows a schematic block diagram of a terminal device 1100 according to an embodiment of the present application.
  • the terminal device 1100 includes:
  • Communication unit 1110 configured to receive the physical sidelink control channel PSCCH, where the PSCCH includes first indication information, and the first indication information is used to indicate the sidelink positioning reference signal SL-PRS;
  • the first indication information is used to indicate resource-related information and/or transmission port information of the SL-PRS.
  • the resource-related information of the SL-PRS includes at least one of the following information:
  • Time domain resource information frequency domain resource information, resource reservation information, and transmission cycle information.
  • the resource-related information of the SL-PRS is carried in the same indication field of the PSCCH, or the resource-related information of the SL-PRS is carried in an independent indication field in the PSCCH.
  • the PSCCH occupies N orthogonal frequency division multiplexing OFDM symbols in one time slot in the time domain, where N is an integer greater than or equal to 1.
  • the PSCCH occupies the first OFDM symbol available for sidelink transmission in a time slot.
  • N is predefined, or N is configured by the network device.
  • the PSCCH occupies M physical resource blocks PRB in the frequency domain, where M is an integer greater than or equal to 1.
  • the PSCCH occupies a first PRB in the frequency domain, the first PRB belongs to a first resource pool, and the first PRB is the first PRB allocated for sidelink transmission in the first resource pool.
  • the first subchannel is the smallest numbered subchannel among multiple subchannels used for sidelink transmission.
  • the first PRB is a specific PRB in the first sub-channel.
  • the first PRB is the smallest numbered PRB in the first sub-channel; or,
  • the number of the first PRB is preconfigured or configured by the network device.
  • M is predefined, or M is configured by the network device.
  • the PSCCH occupies all OFDM symbols available for sidelink transmission in a time slot in the time domain.
  • the SL-PRS occupies some or all of the target time-frequency resources other than the time-frequency resources occupied by the PSCCH, wherein the target time-frequency resources are available Time-frequency resources for sidelink transmission.
  • the PSCCH and the SL-PRS are frequency division multiplexed in the frequency domain through a comb structure.
  • the SL-PRS is used to demodulate the PSCCH.
  • the comb combination occupied by the PSCCH in the frequency domain and the comb combination occupied by the SL-PRS in the frequency domain are separated by K resource units RE, where K is an integer greater than or equal to 2.
  • K is predefined, or K is configured by the network device.
  • some or all of the time-frequency resources in the target time-frequency resources except the time-frequency resources occupied by the PSCCH and the time-frequency resources occupied by the SL-PRS are also used to transmit SL -PRS, or is not used to send SL-PRS, and the target time-frequency resource is a time-frequency resource that can be used for sidelink transmission.
  • the PSCCH includes a demodulation reference signal DMRS, and the DMRS is used as the SL-PRS.
  • the antenna port of the PSCCH and the antenna port of the SL-PRS are the same.
  • the time-frequency resource information of the PSCCH is determined based on preconfiguration information, or based on configuration information of a network device.
  • the PRB resources occupied by the PSCCH are obtained through the sidelink bandwidth part BWP configuration.
  • the sidelink BWP configuration is used to configure the association between the first resource pool and the PRB resources.
  • the first resource pool does not Including PRB resources occupied by the PSCCH, wherein the first resource pool is a resource pool on the sidelink BWP.
  • the SL-PRS is used to determine positioning information.
  • the above-mentioned communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip.
  • the above-mentioned processing unit may be one or more processors.
  • terminal device 1100 may correspond to the second terminal in the method embodiment of the present application, and the above and other operations and/or functions of the various units in the terminal device 1100 are respectively to implement FIG. 16 to FIG.
  • the corresponding process of the second terminal in the method 200 shown in 20 is not repeated here for the sake of simplicity.
  • Figure 25 shows a schematic block diagram of a terminal device 1200 according to an embodiment of the present application. As shown in Figure 25, the terminal device 1200 includes:
  • the processing unit 1210 is used to obtain relevant information of the side row positioning reference signal SL-PRS;
  • the communication unit 1220 is configured to send SL-PRS according to the SL-PRS related information.
  • the SL-PRS related information includes one of the following:
  • Time domain resource information frequency domain resource information, resource reservation information, and transmission cycle information.
  • SL-PRS related information is preconfigured or configured by the network device.
  • the SL-PRS occupies part or all of the orthogonal frequency division multiplexing OFDM symbols available for sidelink transmission in a time slot in the time domain.
  • the SL-PRS occupies part or all of the physical resource blocks PRB available for sidelink transmission in the frequency domain.
  • the above-mentioned communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip.
  • the above-mentioned processing unit may be one or more processors.
  • terminal device 1200 may correspond to the first terminal in the method embodiment of the present application, and the above and other operations and/or functions of each unit in the terminal device 1200 are respectively to realize the implementation of FIG. 21 to FIG.
  • the corresponding process of the first terminal in the method 300 shown in 22 is not repeated here for the sake of simplicity.
  • Figure 26 shows a schematic block diagram of a terminal device 1300 according to an embodiment of the present application.
  • the terminal device 1200 includes:
  • the processing unit 1310 is used to obtain relevant information of the side row positioning reference signal SL-PRS;
  • the communication unit 1320 is configured to receive SL-PRS according to the SL-PRS related information.
  • the SL-PRS related information includes one of the following:
  • Time domain resource information frequency domain resource information, resource reservation information, and transmission cycle information.
  • the SL-PRS related information is preconfigured or configured by the network device.
  • the SL-PRS occupies part or all of the orthogonal frequency division multiplexing OFDM symbols available for sidelink transmission in a time slot in the time domain.
  • the SL-PRS occupies part or all of the physical resource blocks PRB available for sidelink transmission in the frequency domain.
  • the above-mentioned communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip.
  • the above-mentioned processing unit may be one or more processors.
  • terminal device 1300 may correspond to the second terminal in the method embodiment of the present application, and the above and other operations and/or functions of the various units in the terminal device 1300 are respectively to implement FIG. 21 to FIG.
  • the corresponding process of the second terminal in the method 300 shown in 22 is not repeated here for the sake of simplicity.
  • Figure 27 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application.
  • the communication device 600 shown in Figure 27 includes a processor 610.
  • 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 communication device 600 may further include a memory 620.
  • the processor 610 can call and run the computer program from the memory 620 to implement the method in the embodiment of the present application.
  • the memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .
  • the communication device 600 may also include a transceiver 630, and the processor 610 may control the transceiver 630 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 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 600 can be specifically the first terminal in the embodiment of the present application, and the communication device 600 can implement the corresponding processes implemented by the first terminal in the various methods of the embodiment of the present application. For the sake of brevity, they are not mentioned here. Again.
  • the communication device 600 may specifically be the second terminal in the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the second terminal in the various methods of the embodiment of the present application. For the sake of brevity, no details are provided here. Again.
  • Figure 28 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 700 shown in Figure 28 includes a processor 710.
  • the processor 710 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 700 may also include a memory 720 .
  • the processor 710 can call and run the computer program from the memory 720 to implement the method in the embodiment of the present application.
  • the memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .
  • the chip 700 may also include an input interface 730.
  • the processor 710 can control the input interface 730 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.
  • the chip 700 may also include an output interface 740.
  • the processor 710 can control the output interface 740 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 first terminal in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the first terminal in the various methods of the embodiment of the present application.
  • the chip can implement the corresponding processes implemented by the first terminal in the various methods of the embodiment of the present application.
  • the chip can be applied to the second terminal in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the second terminal in the various methods of the embodiment of the present application.
  • the chip can implement the corresponding processes implemented by the second terminal in the various methods of the embodiment of the present application.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Figure 29 is a schematic block diagram of a communication system 900 provided by an embodiment of the present application. As shown in Figure 29, the communication system 900 includes a first terminal 910 and a second terminal 920.
  • the first terminal 910 can be used to implement the corresponding functions implemented by the first terminal in the above method
  • the second terminal 920 can be used to implement the corresponding functions implemented by the second terminal in the above method.
  • I won’t go into details here.
  • the processor in the embodiment of the present application may be an integrated circuit chip and has signal processing capabilities.
  • each step of the above method embodiment can be completed through an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available processors.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • the steps of the method disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field.
  • 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.
  • 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), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which is used as an external cache.
  • RAM Random Access Memory
  • 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 embodiment of the present application can also be a static random access memory (static RAM, SRAM), a 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) and so on. That is, memories in 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 can be applied to the first terminal in the embodiment of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the first terminal in the various methods of the embodiment of the present application.
  • I won’t go into details here.
  • the computer-readable storage medium can be applied to the second terminal in the embodiment of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the second terminal in the various methods of the embodiment of the present application.
  • I won’t go into details 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 first terminal in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the first terminal in the various methods of the embodiment of the present application. For simplicity, in This will not be described again.
  • the computer program product can be applied to the second terminal in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the second terminal in the various methods of the embodiment of the present application. For simplicity, in This will not be described again.
  • An embodiment of the present application also provides a computer program.
  • the computer program can be applied to the first terminal in the embodiment of the present application.
  • the computer program When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the first terminal in the various methods of the embodiment of the present application.
  • the computer program When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the first terminal in the various methods of the embodiment of the present application.
  • the computer program For the sake of brevity, no further details will be given here.
  • the computer program can be applied to the second terminal in the embodiment of the present application.
  • the computer program When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the second terminal in the various methods of the embodiment of the present application.
  • the computer program When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the second terminal in the various methods of the embodiment of the present application.
  • the computer program For the sake of brevity, no further details will be given here.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can 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 can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application.
  • the aforementioned storage media include: U disk, mobile hard disk, 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

一种无线通信的方法和终端设备,该方法包括:第一终端发送物理侧行控制信道PSCCH,所述PSCCH包括第一指示信息,所述第一指示信息用于指示侧行定位参考信号SL-PRS。

Description

无线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,具体涉及一种无线通信的方法和终端设备。
背景技术
在一些场景中,考虑引入基于侧行的定位技术,需要在侧行链路(Sidelink,SL)上发送定位参考信号(positioning reference signals,PRS)记为SL-PRS,此情况下,如何进行SL-PRS的调度或指示是一项亟需解决的问题。
发明内容
本申请提供了一种无线通信的方法和终端设备,通过设计物理侧行控制信道PSCCH,用于调度或指示SL-PRS。
第一方面,提供了一种无线通信的方法,包括:第一终端发送物理侧行控制信道PSCCH,所述PSCCH包括第一指示信息,所述第一指示信息用于指示侧行定位参考信号SL-PRS。
第二方面,提供了一种无线通信的方法,包括:第二终端接收物理侧行控制信道PSCCH,所述PSCCH包括第一指示信息,所述第一指示信息用于指示侧行定位参考信号SL-PRS;根据所述第一指示信息,接收SL-PRS。
第三方面,提供了一种无线通信的方法,包括:第一终端获取侧行定位参考信号SL-PRS相关信息;根据所述SL-PRS相关信息发送SL-PRS。
第四方面,提供了一种无线通信的方法,包括:第二终端获取侧行定位参考信号SL-PRS相关信息;根据所述SL-PRS相关信息接收SL-PRS。
第五方面,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或第三方面或其各实现方式中的方法的功能模块。
第六方面,提供了一种网络设备,用于执行上述第二方面或其各实现方式中的方法。
具体地,该网络设备包括用于执行上述第二方面或第四方面或其各实现方式中的方法的功能模块。
第七方面,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,执行上述第一方面或第三方面或其各实现方式中的方法。
第八方面,提供了一种网络设备,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,执行上述第二方面或第四方面或其各实现方式中的方法。
第九方面,提供了一种芯片,用于实现上述第一方面至第四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,使得安装有该装置的设备执行如上述第一方面至第四方面中的任一方面或其各实现方式中的方法。
第十方面,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四方面中的任一方面或其各实现方式中的方法。
第十一方面,提供了一种计算机程序产品,包括计算机程序指令,所述计算机程序指令使得计算机执行上述第一方面至第四方面中的任一方面或其各实现方式中的方法。
第十二方面,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四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,通过设计物理侧行控制信道PSCCH,用于调度或指示SL-PRS,从而发送端可以通过PSCCH向接收端指示SL-PRS,对应地,接收端可以根据PSCCH接收SL-PRS,进一步地,接收端可以根据SL-PRS进行定位。
附图说明
图1是本申请实施例应用的一种通信系统架构的示意性图。
图2是本申请实施例应用的另一种通信系统架构的示意性图。
图3是本申请提供的一种网络覆盖范围内侧行通信的示意性图。
图4是本申请提供的一种部分网络覆盖侧行通信的示意性图。
图5是本申请提供的一种网络覆盖外侧行通信的示意性图。
图6是本申请提供的一种存在中央控制节点的侧行通信的示意性图。
图7是本申请提供的一种单播侧行通信的示意性图。
图8是本申请提供的一种组播侧行通信的示意性图。
图9是本申请提供的一种广播侧行通信的示意性图。
图10是一种NR-V2X中的时隙结构的示意性图。
图11是一种PSSCH的第n次传输和第n+1传输可用的OFDM符号数的示意图。
图12是一种第二阶SCI的映射方式的示意图。
图13是一种PSCCH DMRS时频域位置的示意图。
图14是一种PSSCH为13个符号数时4个DMRS符号的时域位置示意图。
图15是一种单符号DMRS频域类型1的示意图。
图16是本申请实施例提供的一种无线通信的方法的示意性交互图。
图17是根据本申请实施例提供的一种PSCCH的结构示意图。
图18是根据本申请实施例提供的另一种PSCCH的结构示意图。
图19是根据本申请实施例提供的一种PSCCH和SL-PRS通过梳齿结构频分复用的示意图。
图20是根据本申请实施例提供的一种PSCCH和DMRS通过梳齿结构频分复用的示意图。
图21是根据本申请实施例的另一种无线通信的方法的示意性交互图。
图22是根据本申请实施例的一种SL-PRS的结构示意图。
图23是根据本申请实施例提供的一种终端设备的示意性框图。
图24是根据本申请实施例提供的另一种终端设备的示意性框图。
图25是根据本申请实施例提供的又一种终端设备的示意性框图。
图26是根据本申请实施例提供的再一种终端设备的示意性框图。
图27是根据本申请实施例提供的一种通信设备的示意性框图。
图28是根据本申请实施例提供的一种芯片的示意性框图。
图29是根据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。针对本申请中的实施例,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。
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(Long Term Evolution,LTE)系统、先进的长期演进(Advanced long term evolution,LTE-A)系统、新空口(New Radio,NR)系统、NR系统的演进系统、非授权频谱上的LTE(LTE-based access to unlicensed spectrum,LTE-U)系统、非授权频谱上的NR(NR-based access to unlicensed spectrum,NR-U)系统、非地面通信网络(Non-Terrestrial Networks,NTN)系统、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)、无线局域网(Wireless Local Area Networks,WLAN)、无线保真(Wireless Fidelity,WiFi)、第五代通信(5th-Generation,5G)系统或其他通信系统等。
通常来说,传统的通信系统支持的连接数有限,也易于实现,然而,随着通信技术的发展,移动通信系统将不仅支持传统的通信,还将支持例如,设备到设备(Device to Device,D2D)通信,机器到机器(Machine to Machine,M2M)通信,机器类型通信(Machine Type Communication,MTC),车辆间(Vehicle to Vehicle,V2V)通信,或车联网(Vehicle to everything,V2X)通信等,本申请实施例也可以应用于这些通信系统。
可选地,本申请实施例中的通信系统可以应用于载波聚合(Carrier Aggregation,CA)场景,也可以应用于双连接(Dual Connectivity,DC)场景,还可以应用于独立(Standalone,SA)布网场景。
可选地,本申请实施例中的通信系统可以应用于非授权频谱,其中,非授权频谱也可以认为是共享频谱;或者,本申请实施例中的通信系统也可以应用于授权频谱,其中,授权频谱也可以认为是非共享频谱。
本申请实施例结合网络设备和终端设备描述了各个实施例,其中,终端设备也可以称为用户设备 (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等。
终端设备可以是WLAN中的站点(STATION,ST),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、个人数字助理(Personal Digital Assistant,PDA)设备、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、下一代通信系统例如NR网络中的终端设备,或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)网络中的终端设备等。
在本申请实施例中,终端设备可以部署在陆地上,包括室内或室外、手持、穿戴或车载;也可以部署在水面上(如轮船等);还可以部署在空中(例如飞机、气球和卫星上等)。
在本申请实施例中,终端设备可以是手机(Mobile Phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality,VR)终端设备、增强现实(Augmented Reality,AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self driving)中的无线终端设备、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备或智慧家庭(smart home)中的无线终端设备等。
作为示例而非限定,在本申请实施例中,该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备,是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称,如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上,或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备,更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能,例如:智能手表或智能眼镜等,以及只专注于某一类应用功能,需要和其它设备如智能手机配合使用,如各类进行体征监测的智能手环、智能首饰等。
在本申请实施例中,网络设备可以是用于与移动设备通信的设备,网络设备可以是WLAN中的接入点(Access Point,AP),GSM或CDMA中的基站(Base Transceiver Station,BTS),也可以是WCDMA中的基站(NodeB,NB),还可以是LTE中的演进型基站(Evolutional Node B,eNB或eNodeB),或者中继站或接入点,或者车载设备、可穿戴设备以及NR网络中的网络设备或者基站(gNB)或者未来演进的PLMN网络中的网络设备或者NTN网络中的网络设备等。
作为示例而非限定,在本申请实施例中,网络设备可以具有移动特性,例如网络设备可以为移动的设备。可选地,网络设备可以为卫星、气球站。例如,卫星可以为低地球轨道(low earth orbit,LEO)卫星、中地球轨道(medium earth orbit,MEO)卫星、地球同步轨道(geostationary earth orbit,GEO)卫星、高椭圆轨道(High Elliptical Orbit,HEO)卫星等。可选地,网络设备还可以为设置在陆地、水域等位置的基站。
在本申请实施例中,网络设备可以为小区提供服务,终端设备通过该小区使用的传输资源(例如,频域资源,或者说,频谱资源)与网络设备进行通信,该小区可以是网络设备(例如基站)对应的小区,小区可以属于宏基站,也可以属于小小区(Small cell)对应的基站,这里的小小区可以包括:城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等,这些小小区具有覆盖范围小、发射功率低的特点,适用于提供高速率的数据传输服务。
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。
本申请的实施方式部分使用的术语仅用于对本申请的具体实施例进行解释,而非旨在限定本申请。本申请的说明书和权利要求书及所述附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象,而不是用于描述特定顺序。此外,术语“包括”和“具有”以及它们任何变形,意图在于覆盖不排他的包含。
应理解,在本申请的实施例中提到的“指示”可以是直接指示,也可以是间接指示,还可以是表示具有关联关系。举例说明,A指示B,可以表示A直接指示B,例如B可以通过A获取;也可以表示A间接指示B,例如A指示C,B可以通过C获取;还可以表示A和B之间具有关联关系。
在本申请实施例的描述中,术语“对应”可表示两者之间具有直接对应或间接对应的关系,也可以表示两者之间具有关联关系,也可以是指示与被指示、配置与被配置等关系。
本申请实施例中,“预定义”或“预配置”可以通过在设备(例如,包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现,本申请对于其具体的实现方式不 做限定。比如预定义可以是指协议中定义的。
本申请实施例中,所述“协议”可以指通信领域的标准协议,例如可以包括LTE协议、NR协议以及应用于未来的通信系统中的相关协议,本申请对此不做限定。
为便于理解本申请实施例的技术方案,以下通过具体实施例详述本申请的技术方案。以下相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合,其均属于本申请实施例的保护范围。本申请实施例包括以下内容中的至少部分内容。
图1是本申请实施例适用的一种通信系统的示意图。车载终端(车载终端121和车载终端122)的传输资源是由基站110分配的,车载终端根据基站110分配的资源在侧行链路上进行数据的发送。具体地,基站110可以为终端分配单次传输的资源,也可以为终端分配半静态传输的资源。
图2是本申请实施例适用的另一种通信系统的示意图。车载终端(车载终端131和车载终端132)在侧行链路的资源上自主选取传输资源进行数据传输。可选地,车载终端可以随机选取传输资源,或者通过侦听的方式选取传输资源。
需要说明的是,在侧行通信中,根据进行通信的终端所处的网络覆盖情况,可以分为网络覆盖内侧行通信,如图3所示;部分网络覆盖侧行通信,如图4所示;及网络覆盖外侧行通信,如图5所示。
图3:在网络覆盖内侧行通信中,所有进行侧行通信的终端均处于基站的覆盖范围内,从而,上述终端均可以通过接收基站的配置信令,基于相同的侧行配置进行侧行通信。
图4:在部分网络覆盖侧行通信情况下,部分进行侧行通信的终端位于基站的覆盖范围内,这部分终端能够接收到基站的配置信令,而且根据基站的配置进行侧行通信。而位于网络覆盖范围外的终端,无法接收基站的配置信令,在这种情况下,网络覆盖范围外的终端将根据预配置(pre-configuration)信息及位于网络覆盖范围内的终端发送的物理侧行广播信道(Physical Sidelink Broadcast Channel,PSBCH)中携带的信息确定侧行配置,进行侧行通信。
图5:对于网络覆盖外侧行通信,所有进行侧行通信的终端均位于网络覆盖范围外,所有终端均根据预配置(pre-configuration)信息确定侧行配置进行侧行通信。
图6:对于有中央控制节点的侧行通信,多个终端构成一个通信组,该通信组内具有中央控制节点,又可以称为组头终端(Cluster Header,CH),该中央控制节点具有以下功能之一:负责通信组的建立;组成员的加入、离开;进行资源协调,为其他终端分配侧行传输资源,接收其他终端的侧行反馈信息;与其他通信组进行资源协调等功能。
需要说明的是,设备到设备通信是基于终端到终端(Device to Device,D2D)的一种侧行链路(Sidelink,SL)传输技术,与传统的蜂窝系统中通信数据通过基站接收或者发送的方式不同,车联网系统采用终端到终端直接通信的方式,因此具有更高的频谱效率以及更低的传输时延。在3GPP定义了两种传输模式,分别记为:第一模式(sidelink resource allocation mode 1)和第二模式(sidelink resource allocation mode 2)。
第一模式:终端的传输资源是由基站分配的,终端根据基站分配的资源在侧行链路上进行数据的发送;基站可以为终端分配单次传输的资源,也可以为终端分配半静态传输的资源。如图3所示,终端位于网络覆盖范围内,网络为终端分配侧行传输使用的传输资源。
第二模式:终端在资源池中选取一个资源进行数据的传输。如图5所示,终端位于小区覆盖范围外,终端在预配置的资源池中自主选取传输资源进行侧行传输;或者,如图3所示,终端在网络配置的资源池中自主选取传输资源进行侧行传输。
在新空口-车辆到其他设备(New Radio-Vehicle to Everything,NR-V2X)中,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。
在LTE-V2X中,支持广播传输方式,在NR-V2X中,引入了单播和组播的传输方式。对于单播传输,其接收端终端只有一个终端,如图7所示,UE1、UE2之间进行单播传输;对于组播传输,其接收端是一个通信组内的所有终端,或者是在一定传输距离内的所有终端,如图8所示,UE1、UE2、UE3和UE4构成一个通信组,其中UE1发送数据,该组内的其他终端设备都是接收端终端;对于广播传输方式,其接收端是发送端终端周围的任意一个终端,如图9所示,UE1是发送端终端,其周围的其他终端,UE2-UE6都是接收端终端。
为便于更好的理解本申请实施例,对本申请相关的NR-V2X系统帧结构进行说明。
NR-V2X中的时隙结构如图10所示,图10中的(a)表示时隙中不包括物理侧行反馈信道(Physical Sidelink Feedback Channel,PSFCH)的时隙结构;图10中的(b)表示包括PSFCH的时隙结构。
NR-V2X中物理侧行控制信道(Physical Sidelink Control Channel,PSCCH)在时域上从该时隙的第二个侧行符号开始,占用2个或3个正交频分复用(Orthogonal frequency-division multiplexing, OFDM)符号,在频域上可以占用{10,12 15,20,25}个物理资源块(physical resource block,PRB)。为了降低UE对PSCCH的盲检测的复杂度,在一个资源池内只允许配置一个PSCCH符号的数量和PRB的数量。另外,因为子信道为NR-V2X中物理侧行共享信道(Physical Sidelink Shared Channel,PSSCH)资源分配的最小粒度,PSCCH占用的PRB的数量必须小于或等于资源池内一个子信道中包含的PRB的数量,以免对PSSCH资源选择或分配造成额外的限制。PSSCH在时域上也是从该时隙的第二个侧行符号开始,该时隙中的最后一个时域符号为保护间隔(Guard Period,GP)符号,其余符号映射PSSCH。该时隙中的第一个侧行符号是第二个侧行符号的重复,通常接收端终端将第一个侧行符号用作自动增益控制(Auto gain control,AGC)符号,该符号上的数据通常不用于数据解调。PSSCH在频域上占据M个子信道,每个子信道包括N个连续的PRB。如图10中的(a)所示。
当时隙中包含PSFCH信道时,该时隙中倒数第二个符号和倒数第三个符号用作PSFCH信道传输,并且倒数第三个符号上的数据是倒数第二个符号上数据的重复,在PSFCH信道之前的一个时域符号用作GP符号,如图10中的(b)所示。
为便于更好的理解本申请实施例,对本申请相关的物理侧行共享信道(Physical Sidelink Shared Channel,PSSCH)进行说明。
在NR-V2X中PSSCH用于承载第二阶侧行控制信息(Sidelink Control Information,SCI)(例如SCI 2-A或SCI 2-B)和数据信息。第二阶SCI采用Polar编码方式,固定采用正交相移键控(Quadrature Phase Shift Keying,QPSK)调制。PSSCH的数据部分采用低密度奇偶校验码(Low Density Parity Check,LDPC),支持的最高调制阶数为256正交幅度调制(256Quadrature Amplitude Modulation,256QAM)。
在NR-V2X中,PSSCH最多支持两个流传输,并且采用单位预编码矩阵将两个层上的数据映射到两个天线端口,在一个PSSCH中最多只能发送一个传输块(Transport Block,TB)。然而,和PSSCH数据部分的发送方式不同,当PSSCH采用双流发送方式时,第二阶SCI在两个流上发送的调制符号完全相同,这样的设计可以保证第二阶SCI在高相关信道下的接收性能。
由于在NR-V2X中一个PSSCH的最大重传次数为32次,如果资源池内存在PSFCH资源,而且PSFCH资源的配置周期为2或4,则一个PSSCH的不同传输所在的时隙内可用的OFDM符号可能会发生变化,如图11所示。如果按照一个时隙内真实的OFDM符号数计算
Figure PCTCN2022110302-appb-000001
可能会由于一个时隙内可用于PSSCH传输的符号个数不同导致Q′ SCI2不同,而Q′ SCI2的改变会导致PSSCH承载的TB的大小的变化,如下文所述。为了保证PSSCH多次传输中TBS保持不变,在计算
Figure PCTCN2022110302-appb-000002
时并没有采用真实的PSFCH符号数,另外在计算
Figure PCTCN2022110302-appb-000003
时,可能在重传过程中发生变化的PSSCH DMRS占用的资源单元(Resource-Element,RE)个数和相位跟踪参考信号(Phase Tracking Reference Signal,PT-RS)占用的RE个数也没有考虑在内。
第二阶SCI的码率可以在一定范围内动态调整,具体采用的码率由第一阶SCI指示,所以即使在码率改变后接收端也无需对第二阶SCI进行盲检测。第二阶SCI的调制符号从第一个PSSCH解调参考信号(Demodulation Reference Signal,DMRS)所在的符号采用先频域后时域的方式开始映射,在DMRS所在的OFDM符号上第二阶SCI映射到未被DMRS占用的RE上,如图12所示。
在一个资源池内PSSCH的数据部分可以采用多个不同的调制编码方案(Modulation and Coding Scheme,MCS)表格,包括常规64QAM MCS表格,256QAM MCS表格和低频谱效率64QAM MCS表格,而在一次传输中具体采用的MCS表格由第一阶SCI中的“MCS表格指示”域指示。为了控制峰值平均功率比(Peak to Average Power Ratio,PAPR),PSSCH必须采用连续的PRB发送,由于子信道为PSSCH的最小频域资源粒度,这就要求PSSCH必须占用连续的子信道。
为便于更好的理解本申请实施例,对本申请相关的侧行传输块大小(Transmission Block Size,TBS)进行说明。
PSSCH沿用了NR系统中物理下行共享信道(Physical Downlink Shared Channel,PDSCH)和物理上行共享信道(Physical Uplink Shared Channel,PUSCH)的传输块大小(TBS)确定机制,即根据PSSCH所在时隙内用于PSSCH的RE个数的参考值确定TBS,从而使得实际码率尽可能的接近目标码率。这里采用RE数的参考值而不是实际RE数的目的是为了保证PSSCH重传过程中用于确定TBS的RE数保持不变,从而使得确定的TBS大小相同。为了达到这一目的,在TBS确定过程中PSSCH占用RE数的参考值N RE按照以公式(1)确定:
Figure PCTCN2022110302-appb-000004
其中,n PRB为PSSCH占用的PRB的个数,
Figure PCTCN2022110302-appb-000005
为第一阶SCI占用的RE个数(包括PSCCH的DMRS占用的RE),
Figure PCTCN2022110302-appb-000006
为第二阶SCI占用的RE个数(如上文所述),N′ RE表示一个PRB内可用于PSSCH的参考RE数,由公式(2)确定:
Figure PCTCN2022110302-appb-000007
其中,
Figure PCTCN2022110302-appb-000008
表示一个PRB内的子载波个数;
Figure PCTCN2022110302-appb-000009
表示一个时隙内可用于侧行的符号数,不包括最后一个GP符号和第一个用于AGC的符号;
Figure PCTCN2022110302-appb-000010
或3,具体值由第一阶SCI中的“PSFCH符号数”域指示,为PSFCH占用的符号数的参考值;
Figure PCTCN2022110302-appb-000011
的值由无线资源控制(Radio Resource Control,RRC)层参数配置,用于表示PT-RS和CSI-RS占用RE数的参考值;
Figure PCTCN2022110302-appb-000012
表示一个时隙中的平均DMRS RE个数,和资源池内允许的DMRS图案有关,如表1所示。
表1:资源池内允许的DMRS图案和
Figure PCTCN2022110302-appb-000013
的对应关系
Figure PCTCN2022110302-appb-000014
为便于更好的理解本申请实施例,对本申请相关的侧行DMRS进行说明。
在NR-V2X中,PSCCH的DMRS图案和NR下行控制信道(Physical Downlink Control Channel,PDCCH)相同,即DMRS存在于每一个PSCCH的OFDM符号上,在频域上位于一个PRB的{#1,#5,#9}个RE,如图13所示。PSCCH的DMRS序列通过公式(3)生成:
Figure PCTCN2022110302-appb-000015
其中,伪随机序列c(m)由
Figure PCTCN2022110302-appb-000016
进行初始化,这里l为DMRS所在OFDM符号在时隙内的索引,
Figure PCTCN2022110302-appb-000017
为DMRS所在时隙在系统帧内的索引,
Figure PCTCN2022110302-appb-000018
表示一个时隙内OFDM符号的个数,N ID∈{0,1,L,65535},在一个资源池内N ID的具体值由网络配置或预配置。
NR-V2X借鉴了NR Uu接口中的设计,采用了多个时域PSSCH DMRS图案。在一个资源池内,可采用的DMRS图案的个数和资源池内PSSCH的符号数有关,对于特定的PSSCH符号数(包括第一个AGC符号)和PSCCH符号数,可用的DMRS图案以及图案内每个DMRS符号的位置如表2所示。图14中给出了PSSCH为13个符号数时4个DMRS符号的时域位置示意图。
表2:不同PSSCH和PSCCH符号数下DMRS符号个数及位置
Figure PCTCN2022110302-appb-000019
Figure PCTCN2022110302-appb-000020
如果资源池内配置了多个时域DMRS图案,则具体采用的时域DMRS图案由发送UE选择,并在第一阶SCI中予以指示。这样的设计允许高速运动的UE选择高密度的DMRS图案,从而保证信道估计的精度,而对于低速运动的UE,则可以采用低密度的DMRS图案,从而提高频谱效率。
PSSCH DMRS序列的生成方式和PSCCH DMRS序列的生成方式几乎完全相同,唯一的区别在于伪随机序列c(m)的初始化公式c init中,
Figure PCTCN2022110302-appb-000021
p i为调度该PSSCH的PSCCH的第i位CRC,L=24,为PSCCH CRC的比特位数。
NR PDSCH和PUSCH中支持两种频域DMRS图案,即DMRS频域类型1和DMRS频域类型2,而且对于每一种频域类型,均存在单DMRS符号和双DMRS符号两种不同类型。单符号DMRS频域类型1支持4个DMRS端口,单符号DMRS频域类型2可以支持6个DMRS端口,双DMRS符号情况下,支持的端口数均翻倍。然而,在NR-V2X中,由于PSSCH最多只需要支持两个DMRS端口,所以,仅支持单符号的DMRS频域类型1,如图15所示。
在一些场景中,考虑引入基于侧行的定位技术,需要在侧行链路(Sidelink,SL)上发送定位参考信号(positioning reference signals,PRS)记为SL-PRS,此情况下,如何进行SL-PRS的指示或调度是一项亟需解决的问题。
为便于理解本申请实施例的技术方案,以下通过具体实施例详述本申请的技术方案。以上相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合,其均属于本申请实施例的保护范围。本申请实施例包括以下内容中的至少部分内容。
图16是根据本申请实施例的一种无线通信的方法200的示意性交互图,如图16所示,该方法200包括如下至少部分内容:
S210,第一终端发送物理侧行控制信道PSCCH,所述PSCCH包括第一指示信息,所述第一指示信息用于指示(或者说,调度)侧行定位参考信号SL-PRS。
对应地,第二终端接收PSCCH,根据第一指示信息接收SL-PRS。
在一些实施例中,PSCCH的时频资源信息是根据预配置信息确定的,或者,根据网络设备的配置信息确定的。
在一些实施例中,侧行带宽部分(Band Width Part,BWP)配置中可以包括PSCCH所占的PRB资源信息。网络设备在该侧行BWP上配置资源池时,可以排除PSCCH所占的PRB资源。例如,侧行BWP配置用于配置第一资源池和PRB资源的关联关系,则第一资源池不包括PSCCH所占的PRB资源,其中,第一资源池为侧行BWP上的资源池。
在一些实施例中,用于传输SL-PRS的资源池和用于传输侧行信道的资源池是共享的,记为情况1。这里的侧行信道可以包括PSCCH和PSSCH。
在另一些实施例中,用于传输SL-PRS的资源池和用于传输侧行信道的资源池是独立的,记为情况2。即用于传输SL-PRS的资源池是专属资源池,该资源池仅用于发送SL-PRS。这里的侧行信道可以包括PSCCH和PSSCH。
对于情况1,在一些实现方式中,指示SL-PRS的PSCCH可以和后向侧行技术中的PSCCH格式或结构保持一致,采用此方式,有利于保证使用后向侧行技术的终端能够在侧行感知(SL sensing)过程中,通过解码PSCCH获知SL-PRS所占用的资源,进一步在资源选择时将SL-PRS所占用的资源排除,以免发生资源冲突。
对于情况1,在另一些实现方式中,指示SL-PRS的PSCCH也可以采用新的PSCCH格式或结构,例如,在共享资源池中的使用后向侧行技术的终端的数量较少和/或业务优先级较低时,采用此方式。有利于降低资源碰撞的概率。
对于情况2,由于用于传输SL-PRS的资源池是专属资源池,因此,可以不考虑指示后向兼容问 题,因此,SL-PRS的PSCCH可以采用新的PSCCH格式或结构。
在一些实施例中,PSCCH用于指示SL-PRS。
例如,在SL-PRS专属资源池中,仅有新的侧行技术中的PSCCH和SL-PRS的传输,其中,该PSCCH用于指示SL-PRS。
在另一些实施例中,PSCCH用于指示SL-PRS和PSSCH。
例如,在共享资源池中,可以有传统侧行技术中的PSCCH和PSSCH的传输,其中,该PSCCH用于指示PSSCH,也可以有新的侧行技术中的PSCCH、PSSCH和SL-PRS的传输,其中,该PSCCH用于指示SL-PRS和PSSCH。
需要说明的是,上述传统侧行技术可以指引入SL-PRS传输之前的侧行技术,新的侧行技术可以指引入SL-PRS传输之后的侧行技术。
在一些实施例中,第一指示信息用于指示SL-PRS相关信息,例如资源相关信息和/或发送端口信息。即PSCCH可以用于指示SL-PRS的资源和/或发送端口。
在一些实施例中,SL-PRS的资源相关信息包括但不限于以下信息中的至少之一:
时域资源信息,频域资源信息,资源预留信息(例如资源预留周期信息),发送周期信息。
应理解,本申请并不限定SL-PRS相关信息的承载方式,例如可以通过一个指示域承载,或者,也可以通过独立的指示域承载。
在一些实施例中,PSCCH可以包括资源指示域,用于指示SL-PRS的时域资源信息,频域资源信息,资源预留信息和发送周期信息中的至少之一。
在另一些实施例中,PSCCH可以包括以下至少一个指示域:
时域资源分配域(Time resource assignment,或Time domain resource assignment),用于指示SL-PRS的时域资源信息;
频域资源分配域(Frequency resource assignment,或Frequency domain resource assignment),用于指示SL-PRS的频域资源信息;
资源预留周期(例如Resource reservation period)域,用于指示SL-PRS的资源预留周期信息;
发送周期域,用于指示SL-PRS的发送周期信息。
在一些实施例中,PSCCH可以支持预留下一个或下一组(即多个)SL-PRS的资源位置,即PSCCH支持SL-PRS资源的预约,或者,也可以不支持SL-PRS资源的预约。
例如,在PSCCH不支持SL-PRS资源的预约时,可以设计PSCCH不包括资源预留域,在PSCCH支持SL-PRS资源的预约时,可以设计PSCCH包括资源预留域。
在一些实施例中,PSCCH还可以包括发送端口(antenna port(s))域,用于指示SL-PRS的发送端口信息。
在一些实施例中,PSCCH在时域上占用一个时隙中的N个OFDM符号,其中,N为大于或等于1的整数。即PSCCH可以占用一个时隙中的一个或多个OFDM符号。
在一些实施例中,N是预配置的,或者,N是网络设备配置的。例如通过广播消息,或专用信令配置。可选地,该专用信令可以包括但不限于无线资源控制(Radio Resource Control,RRC)信令、媒体接入控制控制元素(Media Access Control Control Element,MAC CE)、下行控制信息(Downlink Control Information,DCI)。
在一些实施例中,2≤N≤12。
在一些实施例中,SL-PRS占用一个时隙中的除PSCCH所占用的N个OFDM符号之外的其他OFDM符号(假设剩余Q个OFDM符号)中的部分或全部。
作为一个具体示例,SL-PRS占用所述Q个OFDM符号。
作为另一个具体示例,SL-PRS占用所述Q个OFDM符号中的P个OFDM符号,P小于Q。
可选地,若SL-PRS的资源池是前述情况1中的共享资源池,剩余Q-P个OFDM符号中的部分或全部用于传输PSSCH。
在一个具体实施例中,PSCCH在时域上占用一个时隙中的一个OFDM符号。
作为示例,PSCCH占用一个时隙中的第一个可用于侧行传输的OFDM符号。
例如,如图17所示,一个时隙中的OFDM符号#0用作AGC,OFDM符号#13用作GP,OFDM符号#1~#12可用于侧行传输,则PSCCH可以占用OFDM符号#1~#12中的一个OFDM符号,图17仅以PSCCH占用第一个可用于侧行传输的OFDM符号示例,但本申请并不限于此。
在图17的示例中,SL-PRS可以占用OFDM符号#2~#12中的部分或全部OFDM符号。
例如,SL-PRS占用OFDM符号#2~#10,若SL-PRS的资源池是共享资源池,则OFDM符号#11和OFDM符号#12中的部分或全部可以用于传输PSSCH。
在另一个具体实施例中,所述PSCCH在时域上占一个时隙中的所有可用于侧行传输的OFDM符号。
例如,如图18所示,一个时隙中的OFDM符号#0用作AGC,OFDM符号#13用作GP,OFDM符号#1~#12可用于侧行传输,则PSCCH可以占用OFDM符号#1~#12。
在一些实施例中,PSCCH在频域上占M个PRB,其中,M为大于或等于1的整数。
即,PSCCH在频域上一个或多个PRB。可选地,1≤M≤M max,其中,M max可以是PSCCH所占的最大PRB数,即PSCCH可配置的最大PRB数。可选地,M max可以是预配置的,或网络设备配置的。
在一些实施例中,M是预配置的,或者,M是网络设备配置的。例如通过广播消息,或专用信令配置。可选地,该专用信令可以包括但不限于RRC信令、MAC CE、DCI。
在一个具体实施例中,PSCCH在频域上占用一个PRB。
图18是本申请实施例提供的一种在频域上占用一个PRB的PSCCH格式的示例。应理解,在图18的示例中,PSCCH在时域上可以占用可用于侧行传输的全部OFDM符号,或者,也可以占用可用于侧行传输的部分OFDM符号,本申请对此不作限定。
在一些实施例中,PSCCH在频域上占用第一PRB,第一PRB可以是第一子信道中的一个PRB。
在一些实施例中,第一子信道可以是第一资源池中分配用于侧行传输的一个子信道。
可选地,第一资源池可以是前述情况2中的SL-PRS专属资源池,或者,也可以是情况1中的共享资源池。
在一些实施例中,第一资源池中分配用于侧行传输的子信道有多个,本申请并不限定第一子信道在该多个子信道中的具体位置,例如,可以是该多个子信道中的任一子信道,或者特定子信道等。
作为一个具体示例,第一子信道是用于侧行传输的多个子信道中的编号最小的子信道。
作为另一个具体示例,第一子信道是用于侧行传输的多个子信道中的编号为X的子信道,X为整数。其中,X是预配置的,或网络设备配置的。具体配置方式参考N或M的配置方式,这里不再赘述。
在一些实施例中,第一PRB可以是第一子信道中的任一PRB,或者,特定PRB。
作为一个具体示例,第一PRB是第一子信道中的编号最小的PRB,或者,可以是其他PRB。
作为另一个具体示例,第一PRB可以是第一子信道中编号为Y的PRB,其中,Y可以是预配置的,或网络设备配置的。
在一些实施例中,SL-PRS占用可用于侧行传输的子信道中除PSCCH占用的M个PRB之外其他PRB(记为L个PRB)中的部分或全部。
作为一个具体示例,SL-PRS占用该L个PRB。
作为另一个具体示例,SL-PRS占用L个PRB中的J个PRB,其中,1≤J<L。
可选地,若SL-PRS的资源池是前述情况1中的共享资源池,剩余L-J个PRB中的部分或全部用于传输PSSCH。
因此,在本申请实施例中,SL-PRS占用目标时频资源中除所述PSCCH所占用的时频资源之外的其他时频资源中的部分或全部,其中,所述目标时频资源为可用于侧行传输的时频资源。
例如,目标时频资源在时域上占用一个时隙中的A个OFDM符号,在频域上占用B个PRB,PSCCH在时域中占用一个时隙中的N个OFDM符号,在频域上占用M个PRB,则SL-PRS在时域上占用剩余A-N个OFDM符号中的部分或全部,在频域上占用剩余B-M个PRB中的部分或全部。
在一些实施例中,若SL-PRS的资源池是前述情况1中的共享资源池,SL-PRS占用目标时频资源中除PSCCH所占用的时频资源之外的其他时频资源中的部分,则目标时频资源中除PSCCH和SL-PRS所占用的时频资源之外的其他时频资源中的部分或全部可以用于传输PSSCH。
在本申请一些实施例中,PSCCH中可以包括DMRS,例如,PSCCH和DMRS在频域是通过梳齿结构频分复用的。图13是一种PSCCH和DMRS通过梳齿结构频分复用的示意图。
例如,在图17和图18示例的PSCCH结构中,PSCCH可以包括DMRS,例如,PSCCH和DMRS可以采用图13所示的梳齿结构。
即此情况下,PSCCH中包括DMRS,PSCCH至少用于指示SL-PRS,可选地,PSCCH还用于指示PSSCH,该DMRS用于解调PSCCH,SL-PRS用于确定定位信息。
在本申请另一些实施例中,PSCCH中可以包括SL-PRS,例如,PSCCH和SL-PRS在频域是通过梳齿结构频分复用的。在该实施例中,SL-PRS用于解调PSCCH。例如,第二终端在接收PSCCH之后,可以根据PSCCH中的SL-PRS解调PSCCH,还可以根据该SL-PRS确定定位信息。例如,SL-PRS用于绝对定位,相对定位,测距或测向等。
在一些实施例中,PSCCH在频域所占的梳齿组合和SL-PRS在频域所占的梳齿组合间隔K个RE,其中,K为大于等于2的整数。
在一些实施例中,K是预定义的,或者,K是网络设备配置的。例如通过广播消息,或专用信令配置。可选地,该专用信令可以包括但不限于RRC信令、MAC CE、DCI。
可选地,在该实施例中,PSCCH所占的梳齿组合和SL-PRS所占的梳齿组合在时域上占用一个时隙中的一个或多个OFDM符号,其中,所占用的OFDM符号的设计参考前述实施例中PSCCH所占用的OFDM符号数的设计,为了简洁,这里不再赘述。
图19是一种PSCCH和SL-PRS通过梳齿结构频分复用的示意图。应理解,图19仅以PSCCH所占的梳齿组合和SL-PRS所占的梳齿组合间隔2个RE进行示例,在其他实施例中,PSCCH所占的梳齿组合和SL-PRS所占的梳齿组合也可以间隔更多个RE,本申请并不限于此。
应理解,在PSCCH中包括SL-PRS时,目标时频资源中除PSCCH所占的时频资源和SL-PRS所占的时频资源之外的其他时频资源中的部分或全部也用于发送SL-PRS,或者,也可以不用于发送SL-PRS,目标时频资源为可用于侧行传输的时频资源。例如,如图19所示,除PSCCH所占的梳齿组合和SL-PRS所占的梳齿组合之外的其他可用于侧行传输的时频资源用于传输SL-PRS,当然也可以不用于传输SL-PRS,或者,部分时频资源用于传输SL-PRS。可选地,当SL-PRS的资源池是共享资源池时,并且除了PSCCH所占的时频资源和SL-PRS所占的时频资源之外还有其他可用于侧行传输的时频资源,则这些时频资源中的部分或全部可以用于传输PSSCH。
在一些实施例中,PSCCH中包括DMRS,DMRS用作SL-PRS。即该DMRS用于解调PSCCH以及用于确定定位信息。
可选地,此情况下,SL-PRS的序列和PSCCH的DMRS序列相同。
可选地,此情况下,第二终端根据接收到的PSCCH,可以将PSCCH的DMRS作为SL-PRS,进一步基于该SL-PRS确定定位信息,例如测算到达时间(Time Of Arrival,TOA)。
可选地,此情况下,PSCCH的天线端口和SL-PRS的天线端口相同。
在一些实施例中,PSCCH和DMRS在频域上可以是通过梳齿结构频分复用的。
在一些实施例中,PSCCH在频域所占的梳齿组合和DMRS在频域所占的梳齿组合间隔Z个RE,其中,Z为大于等于2的整数。图20是一种PSCCH和DMRS通过梳齿结构频分复用的示意图。应理解,图20仅以PSCCH所占的梳齿组合和DMRS所占的梳齿组合间隔4个RE进行示例,在其他实施例中,PSCCH所占的梳齿组合和DMRS所占的梳齿组合也可以间隔更多个RE,本申请并不限于此。
应理解,在该实施例中,PSCCH所占的梳齿组合和DMRS所占的梳齿组合在时域上占用一个时隙中的一个或多个OFDM符号,如图20所示占用3个OFDM符号。
在一些实施例中,目标时频资源中除PSCCH和DMRS之外的其他时频资源中的部分或全部可以用于传输PSSCH,或者,也可以不用于传输PSSCH。
综上,在本申请实施例中,发送端可以采用已有格式的PSCCH调度或指示SL-PRS,或者,也可以使用新格式的PSCCH调度或指示SL-PRS,接收端可以根据PSCCH接收SL-PRS,进一步基于该SL-PRS进行定位。
作为示例,PSCCH可以采用如下方式设计:
方式1:PSCCH可以采用已有格式或结构。
此情况下,可以将PSCCH的DMRS用作SL-PRS,即该DMRS用于解调PSCCH以及用于确定定位信息,如图20所示。
方式2:PSCCH采用新的格式或结构。例如对PSCCH包括的信息域,PSCCH所占的资源,SL-PRS的资源进行了设计。
例如,PSCCH可以包括用于指示SL-PRS的资源相关信息和/或发送端口信息的指示域。
方式2-1:PSCCH占用一个OFDM符号(如图17所示),也可以占用多个OFDM符号。
方式2-2:PSCCH在频域上占用一个PRB,并且在时域上占用一时隙内的所有可用于侧行传输的OFDM符号,如图18所示。
方式2-3:PSCCH和SL-PRS在频域上通过梳齿结构频分复用,如图19所示。
方式2-4:PSCCH中包括DMRS,DMRS用作SL-PRS。
图21是根据本申请实施例的另一种无线通信的方法300的示意性交互图,如图21所示,该方法300包括如下至少部分内容:
S310,第一终端获取侧行定位参考信号SL-PRS相关信息;
S320,第二终端获取侧行定位参考信号SL-PRS相关信息;
S330,第一终端根据SL-PRS相关信息发送SL-PRS。
对应地,第二终端根据SL-PRS相关信息接收SL-PRS。
在一些实施例中,SL-PRS用于确定定位信息。
应理解,本申请并不限定S310和S320的先后顺序,只要在S330之前执行即可。
在一些实施例中,SL-PRS的资源池可以是专属资源池,或者,也可以是共享资源池,具体实现参考方法200中的情况1和情况2中的相关说明,为了简洁,这里不再赘述。
在一些实施例中,所述SL-PRS相关信息包括以下中指示一项:
时域资源信息,频域资源信息,资源预留信息,发送周期信息。
在一些实施例中,SL-PRS相关信息是预配置的,或者网络设备配置的。例如,通过广播消息,或专用信令配置的。
在一些实施例中,SL-PRS在时域上占用一个时隙中的可用于侧行传输的正交分频复用OFDM符号中的部分或全部。
例如,如图22所示,一个时隙中的OFDM符号0用作AGC,OFDM符号13用作GP,OFDM符号1~12可用于侧行传输,则SL-PRS可以占用OFDM符号1~12中的部分或全部OFDM符号,图22仅以SL-PRS占用全部OFDM符号示例,但本申请并不限于此。
在一些实施例中,SL-PRS在频域上占用可用于侧行传输的PRB中的部分或全部。
例如,若SL-PRS的资源池为第一资源池,第一资源池中分配用于侧行传输的子信道有多个,每个子信道可以包括多个PRB,SL-PRS可以占用该多个子信道包括的PRB资源中的部分或全部。
因此,在本申请实施例中,SL-PRS也可以不是PSCCH调度或指示的,此情况下,SL-PRS所在的时隙中可以不包括PSCCH,此情况下,发送端和接收端可以根据预配置或网络设备配置的SL-PRS相关信息进行SL-PRS的发送和接收,进一步地,接收端可以根据SL-PRS确定定位信息,例如根据SL-PRS进行绝对定位,相对定位,测距或测向等。
上文结合图16至图22,详细描述了本申请的方法实施例,下文结合图23至图29,详细描述本申请的装置实施例,应理解,装置实施例与方法实施例相互对应,类似的描述可以参照方法实施例。
图23示出了根据本申请实施例的终端设备1000的示意性框图。如图23所示,该终端设备1000包括:
通信单元1010,用于发送物理侧行控制信道PSCCH,所述PSCCH包括第一指示信息,所述第一指示信息用于指示侧行定位参考信号SL-PRS。
在一些实施例中,所述第一指示信息用于指示所述SL-PRS的资源相关信息和/或发送端口信息。
在一些实施例中,所述SL-PRS的资源相关信息包括以下信息中的至少之一:
时域资源信息,频域资源信息,资源预留信息,发送周期信息。
在一些实施例中,所述SL-PRS的资源相关信息承载在所述PSCCH的相同指示域中,或者,所述SL-PRS的资源相关信息通过所述PSCCH中的独立的指示域承载。
在一些实施例中,所述PSCCH在时域上占用一个时隙中的N个正交分频复用OFDM符号,其中,N为大于或等于1的整数。
在一些实施例中,所述PSCCH占用一个时隙中的第一个可用于侧行传输的OFDM符号。
在一些实施例中,N是预配置的,或者,N是网络设备配置的。
在一些实施例中,所述PSCCH在频域上占M个物理资源块PRB,其中,M为大于或等于1的整数。
在一些实施例中,所述PSCCH在频域上占用第一PRB,所述第一PRB属于第一资源池,所述第一PRB是所述第一资源池中分配用于侧行传输的第一子信道中一个PRB。
在一些实施例中,所述第一子信道是用于侧行传输的多个子信道中的编号最小的子信道。
在一些实施例中,所述第一PRB是所述第一子信道中的特定PRB。
在一些实施例中,所述第一PRB是所述第一子信道中的编号最小的PRB;或者,
所述第一PRB是预配置的,或者根据网络设备配置确定。
在一些实施例中,M是预定义的,或者,M是网络设备配置的。
在一些实施例中,所述PSCCH在时域上占一个时隙中的所有可用于侧行传输的OFDM符号。
在一些实施例中,所述SL-PRS占用目标时频资源中除所述PSCCH所占用的时频资源之外的其他时频资源中的部分或全部,其中,所述目标时频资源为可用于侧行传输的时频资源。
在一些实施例中,所述PSCCH和所述SL-PRS在频域是通过梳齿结构频分复用的。
在一些实施例中,所述SL-PRS用于解调所述PSCCH。
在一些实施例中,所述PSCCH在频域所占的梳齿组合和所述SL-PRS在频域所占的梳齿组合间 隔K个资源单元RE,其中,K为大于等于2的整数。
在一些实施例中,K是预定义的,或者,K是网络设备配置的。
在一些实施例中,目标时频资源中除所述PSCCH所占的时频资源和所述SL-PRS所占的时频资源之外的其他时频资源中的部分或全部也用于发送SL-PRS,或者,不用于发送SL-PRS,所述目标时频资源为可用于侧行传输的时频资源。
在一些实施例中,所述PSCCH中包括解调参考信号DMRS,所述DMRS用作SL-PRS。
在一些实施例中,所述PSCCH的天线端口和所述SL-PRS的天线端口相同。
在一些实施例中,所述PSCCH的时频资源信息是根据预配置信息确定的,或者,根据网络设备的配置信息确定的。
在一些实施例中,所述PSCCH所占的PRB资源通过侧行带宽部分BWP配置获取,所述侧行BWP配置用于配置第一资源池和PRB资源的关联关系,所述第一资源池不包括所述PSCCH所占的PRB资源,其中,所述第一资源池为所述侧行BWP上的资源池。
在一些实施例中,所述SL-PRS用于确定定位信息。
可选地,在一些实施例中,上述通信单元可以是通信接口或收发器,或者是通信芯片或者片上系统的输入输出接口。
应理解,根据本申请实施例的终端设备1000可对应于本申请方法实施例中的第一终端,并且终端设备1000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16至图20所示方法200中第一终端的相应流程,为了简洁,在此不再赘述。
图24示出了根据本申请实施例的终端设备1100的示意性框图。如图24所示,该终端设备1100包括:
通信单元1110,用于接收物理侧行控制信道PSCCH,所述PSCCH包括第一指示信息,所述第一指示信息用于指示侧行定位参考信号SL-PRS;以及
根据所述第一指示信息,接收SL-PRS。
在一些实施例中,所述第一指示信息用于指示所述SL-PRS的资源相关信息和/或发送端口信息。
在一些实施例中,所述SL-PRS的资源相关信息包括以下信息中的至少之一:
时域资源信息,频域资源信息,资源预留信息,发送周期信息。
在一些实施例中,所述SL-PRS的资源相关信息承载在所述PSCCH的相同指示域中,或者,所述SL-PRS的资源相关信息通过所述PSCCH中的独立的指示域承载。
在一些实施例中,所述PSCCH在时域上占用一个时隙中的N个正交分频复用OFDM符号,其中,N为大于或等于1的整数。
在一些实施例中,所述PSCCH占用一个时隙中的第一个可用于侧行传输的OFDM符号。
在一些实施例中,N是预定义的,或者,N是网络设备配置的。
在一些实施例中,所述PSCCH在频域上占M个物理资源块PRB,其中,M为大于或等于1的整数。
在一些实施例中,所述PSCCH在频域上占用第一PRB,所述第一PRB属于第一资源池,所述第一PRB是所述第一资源池中分配用于侧行传输的第一子信道中一个PRB。
在一些实施例中,所述第一子信道是用于侧行传输的多个子信道中的编号最小的子信道。
在一些实施例中,所述第一PRB是所述第一子信道中的特定PRB。
在一些实施例中,所述第一PRB是所述第一子信道中的编号最小的PRB;或者,
所述第一PRB的编号是预配置的,或者网络设备配置的。
在一些实施例中,M是预定义的,或者,M是网络设备配置的。
在一些实施例中,所述PSCCH在时域上占一个时隙中的所有可用于侧行传输的OFDM符号。
在一些实施例中,所述SL-PRS占用目标时频资源中除所述PSCCH所占用的时频资源之外的其他时频资源中的部分或全部,其中,所述目标时频资源为可用于侧行传输的时频资源。
在一些实施例中,所述PSCCH和所述SL-PRS在频域是通过梳齿结构频分复用的。
在一些实施例中,所述SL-PRS用于解调所述PSCCH。
在一些实施例中,所述PSCCH在频域所占的梳齿组合和所述SL-PRS在频域所占的梳齿组合间隔K个资源单元RE,其中,K为大于等于2的整数。
在一些实施例中,K是预定义的,或者,K是网络设备配置的。
在一些实施例中,目标时频资源中除所述PSCCH所占的时频资源和所述SL-PRS所占的时频资源之外的其他时频资源中的部分或全部也用于发送SL-PRS,或者,不用于发送SL-PRS,所述目标时频资源为可用于侧行传输的时频资源。
在一些实施例中,所述PSCCH中包括解调参考信号DMRS,所述DMRS用作SL-PRS。
在一些实施例中,所述PSCCH的天线端口和所述SL-PRS的天线端口相同。
在一些实施例中,所述PSCCH的时频资源信息是根据预配置信息确定的,或者,根据网络设备的配置信息确定的。
在一些实施例中,所述PSCCH所占的PRB资源通过侧行带宽部分BWP配置获取,所述侧行BWP配置用于配置第一资源池和PRB资源的关联关系,所述第一资源池不包括所述PSCCH所占的PRB资源,其中,所述第一资源池为所述侧行BWP上的资源池。
在一些实施例中,所述SL-PRS用于确定定位信息。
可选地,在一些实施例中,上述通信单元可以是通信接口或收发器,或者是通信芯片或者片上系统的输入输出接口。上述处理单元可以是一个或多个处理器。
应理解,根据本申请实施例的终端设备1100可对应于本申请方法实施例中的第二终端,并且终端设备1100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16至图20所示方法200中第二终端的相应流程,为了简洁,在此不再赘述。
图25示出了根据本申请实施例的终端设备1200的示意性框图。如图25所示,该终端设备1200包括:
处理单元1210,用于获取侧行定位参考信号SL-PRS相关信息;
通信单元1220,用于根据所述SL-PRS相关信息发送SL-PRS。
在一些实施例中,所述SL-PRS相关信息包括以下中指示一项:
时域资源信息,频域资源信息,资源预留信息,发送周期信息。
在一些实施例中,SL-PRS相关信息是预配置的,或者网络设备配置的。
在一些实施例中,所述SL-PRS在时域上占用一个时隙中的可用于侧行传输的正交分频复用OFDM符号中的部分或全部。
在一些实施例中,所述SL-PRS在频域上占用可用于侧行传输的物理资源块PRB中的部分或全部。
可选地,在一些实施例中,上述通信单元可以是通信接口或收发器,或者是通信芯片或者片上系统的输入输出接口。上述处理单元可以是一个或多个处理器。
应理解,根据本申请实施例的终端设备1200可对应于本申请方法实施例中的第一终端,并且终端设备1200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21至图22所示方法300中第一终端的相应流程,为了简洁,在此不再赘述。
图26示出了根据本申请实施例的终端设备1300的示意性框图。如图26所示,该终端设备1200包括:
处理单元1310,用于获取侧行定位参考信号SL-PRS相关信息;
通信单元1320,用于根据所述SL-PRS相关信息接收SL-PRS。
在一些实施例中,所述SL-PRS相关信息包括以下中指示一项:
时域资源信息,频域资源信息,资源预留信息,发送周期信息。
在一些实施例中,所述SL-PRS相关信息是预配置的,或者网络设备配置的。
在一些实施例中,所述SL-PRS在时域上占用一个时隙中的可用于侧行传输的正交分频复用OFDM符号中的部分或全部。
在一些实施例中,所述SL-PRS在频域上占用可用于侧行传输的物理资源块PRB中的部分或全部。
可选地,在一些实施例中,上述通信单元可以是通信接口或收发器,或者是通信芯片或者片上系统的输入输出接口。上述处理单元可以是一个或多个处理器。
应理解,根据本申请实施例的终端设备1300可对应于本申请方法实施例中的第二终端,并且终端设备1300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21至图22所示方法300中第二终端的相应流程,为了简洁,在此不再赘述。
图27是本申请实施例提供的一种通信设备600示意性结构图。图27所示的通信设备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27所示,通信设备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,如图27所示,通信设备600还可以包括收发器630,处理器610可以控制该收发器630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630可以包括发射机和接收机。收发器630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,该通信设备600具体可为本申请实施例的第一终端,并且该通信设备600可以实现本申请实施例的各个方法中由第一终端实现的相应流程,为了简洁,在此不再赘述。
可选地,该通信设备600具体可为本申请实施例的第二终端,并且该通信设备600可以实现本申请实施例的各个方法中由第二终端实现的相应流程,为了简洁,在此不再赘述。
图28是本申请实施例的芯片的示意性结构图。图28所示的芯片700包括处理器710,处理器710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28所示,芯片700还可以包括存储器720。其中,处理器710可以从存储器720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720可以是独立于处理器710的一个单独的器件,也可以集成在处理器710中。
可选地,该芯片700还可以包括输入接口730。其中,处理器710可以控制该输入接口730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700还可以包括输出接口740。其中,处理器710可以控制该输出接口740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第一终端,并且该芯片可以实现本申请实施例的各个方法中由第一终端实现的相应流程,为了简洁,在此不再赘述。
可选地,该芯片可应用于本申请实施例中的第二终端,并且该芯片可以实现本申请实施例的各个方法中由第二终端实现的相应流程,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29是本申请实施例提供的一种通信系统900的示意性框图。如图29所示,该通信系统900包括第一终端910和第二终端920。
其中,该第一终端910可以用于实现上述方法中由第一终端实现的相应的功能,以及该第二终端920可以用于实现上述方法中由第二终端实现的相应的功能,为了简洁,在此不再赘述。
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第一终端,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第一终端实现的相应流程,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第二终端,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第二终端实现的相应流程,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第一终端,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第一终端实现的相应流程,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第二终端,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第二终端实现的相应流程,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第一终端,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第一终端实现的相应流程,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第二终端,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第二终端实现的相应流程,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以权利要求的保护范围为准。

Claims (70)

  1. 一种无线通信的方法,其特征在于,包括:
    第一终端发送物理侧行控制信道PSCCH,所述PSCCH包括第一指示信息,所述第一指示信息用于指示侧行定位参考信号SL-PRS。
  2. 根据权利要求1所述的方法,其特征在于,所述第一指示信息用于指示所述SL-PRS的资源相关信息和/或发送端口信息。
  3. 根据权利要求2所述的方法,其特征在于,所述SL-PRS的资源相关信息包括以下信息中的至少之一:
    时域资源信息,频域资源信息,资源预留信息,发送周期信息。
  4. 根据权利要求3所述的方法,其特征在于,所述SL-PRS的资源相关信息承载在所述PSCCH的相同指示域中,或者,所述SL-PRS的资源相关信息通过所述PSCCH中的独立的指示域承载。
  5. 根据权利要求1-4中任一项所述的方法,其特征在于,所述PSCCH在时域上占用一个时隙中的N个正交分频复用OFDM符号,其中,N为大于或等于1的整数。
  6. 根据权利要求5所述的方法,其特征在于,所述PSCCH占用一个时隙中的第一个可用于侧行传输的OFDM符号。
  7. 根据权利要求5或6所述的方法,其特征在于,N是预配置的,或者,N是网络设备配置的。
  8. 根据权利要求1-7中任一项所述的方法,其特征在于,所述PSCCH在频域上占M个物理资源块PRB,其中,M为大于或等于1的整数。
  9. 根据权利要求8所述的方法,其特征在于,所述PSCCH在频域上占用第一PRB,所述第一PRB属于第一资源池,所述第一PRB是所述第一资源池中分配用于侧行传输的第一子信道中一个PRB。
  10. 根据权利要求9所述的方法,其特征在于,所述第一子信道是用于侧行传输的多个子信道中的编号最小的子信道。
  11. 根据权利要求9或10所述的方法,其特征在于,所述第一PRB是所述第一子信道中的特定PRB。
  12. 根据权利要求11所述的方法,其特征在于,所述第一PRB是所述第一子信道中的编号最小的PRB;或者,
    所述第一PRB是预配置的,或者根据网络设备配置确定。
  13. 根据权利要求8-12中任一项所述的方法,其特征在于,M是预定义的,或者,M是网络设备配置的。
  14. 根据权利要求8-13中任一项所述的方法,其特征在于,所述PSCCH在时域上占一个时隙中的所有可用于侧行传输的OFDM符号。
  15. 根据权利要求5-14中任一项所述的方法,其特征在于,所述SL-PRS占用目标时频资源中除所述PSCCH所占用的时频资源之外的其他时频资源中的部分或全部,其中,所述目标时频资源为可用于侧行传输的时频资源。
  16. 根据权利要求1或2所述的方法,其特征在于,所述PSCCH和所述SL-PRS在频域是通过梳齿结构频分复用的。
  17. 根据权利要求16所述的方法,其特征在于,所述SL-PRS用于解调所述PSCCH。
  18. 根据权利要求16或17所述的方法,其特征在于,所述PSCCH在频域所占的梳齿组合和所述SL-PRS在频域所占的梳齿组合间隔K个资源单元RE,其中,K为大于等于2的整数。
  19. 根据权利要求18所述的方法,其特征在于,K是预定义的,或者,K是网络设备配置的。
  20. 根据权利要求18或19所述的方法,其特征在于,目标时频资源中除所述PSCCH所占的时频资源和所述SL-PRS所占的时频资源之外的其他时频资源中的部分或全部也用于发送SL-PRS,或者,不用于发送SL-PRS,所述目标时频资源为可用于侧行传输的时频资源。
  21. 根据权利要求1-20中任一项所述的方法,其特征在于,所述PSCCH中包括解调参考信号DMRS,所述DMRS用作SL-PRS。
  22. 根据权利要求21所述的方法,其特征在于,所述PSCCH的天线端口和所述SL-PRS的天线端口相同。
  23. 根据权利要求1-22中任一项所述的方法,其特征在于,所述PSCCH的时频资源信息是根据预配置信息确定的,或者,根据网络设备的配置信息确定的。
  24. 根据权利要求23所述的方法,其特征在于,所述PSCCH所占的PRB资源通过侧行带宽部分BWP配置获取,所述侧行BWP配置用于配置第一资源池和PRB资源的关联关系,所述第一资源 池不包括所述PSCCH所占的PRB资源,其中,所述第一资源池为所述侧行BWP上的资源池。
  25. 根据权利要求1-24中任一项所述的方法,其特征在于,所述SL-PRS用于确定定位信息。
  26. 一种无线通信的方法,其特征在于,包括:
    第一终端获取侧行定位参考信号SL-PRS相关信息;
    根据所述SL-PRS相关信息发送SL-PRS。
  27. 根据权利要求26所述的方法,其特征在于,所述SL-PRS相关信息包括以下中指示一项:
    时域资源信息,频域资源信息,资源预留信息,发送周期信息。
  28. 根据权利要求26或27所述的方法,其特征在于,所述SL-PRS相关信息是预配置的,或者网络设备配置的。
  29. 根据权利要求26-28中任一项所述的方法,其特征在于,所述SL-PRS在时域上占用一个时隙中的可用于侧行传输的正交分频复用OFDM符号中的部分或全部。
  30. 根据权利要求26-29中任一项所述的方法,其特征在于,所述SL-PRS在频域上占用可用于侧行传输的物理资源块PRB中的部分或全部。
  31. 一种无线通信的方法,其特征在于,包括:
    第二终端接收物理侧行控制信道PSCCH,所述PSCCH包括第一指示信息,所述第一指示信息用于指示侧行定位参考信号SL-PRS;
    根据所述第一指示信息,接收SL-PRS。
  32. 根据权利要求31所述的方法,其特征在于,所述第一指示信息用于指示所述SL-PRS的资源相关信息和/或发送端口信息。
  33. 根据权利要求32所述的方法,其特征在于,所述SL-PRS的资源相关信息包括以下信息中的至少之一:
    时域资源信息,频域资源信息,资源预留信息,发送周期信息。
  34. 根据权利要求33所述的方法,其特征在于,所述SL-PRS的资源相关信息承载在所述PSCCH的相同指示域中,或者,所述SL-PRS的资源相关信息通过所述PSCCH中的独立的指示域承载。
  35. 根据权利要求31-34中任一项所述的方法,其特征在于,所述PSCCH在时域上占用一个时隙中的N个正交分频复用OFDM符号,其中,N为大于或等于1的整数。
  36. 根据权利要求35所述的方法,其特征在于,所述PSCCH占用一个时隙中的第一个可用于侧行传输的OFDM符号。
  37. 根据权利要求35或36所述的方法,其特征在于,N是预定义的,或者,N是网络设备配置的。
  38. 根据权利要求31-37中任一项所述的方法,其特征在于,所述PSCCH在频域上占M个物理资源块PRB,其中,M为大于或等于1的整数。
  39. 根据权利要求38所述的方法,其特征在于,所述PSCCH在频域上占用第一PRB,所述第一PRB属于第一资源池,所述第一PRB是所述第一资源池中分配用于侧行传输的第一子信道中一个PRB。
  40. 根据权利要求39所述的方法,其特征在于,所述第一子信道是用于侧行传输的多个子信道中的编号最小的子信道。
  41. 根据权利要求39或40所述的方法,其特征在于,所述第一PRB是所述第一子信道中的特定PRB。
  42. 根据权利要求41所述的方法,其特征在于,所述第一PRB是所述第一子信道中的编号最小的PRB;或者,
    所述第一PRB的编号是预配置的,或者网络设备配置的。
  43. 根据权利要求38-42中任一项所述的方法,其特征在于,M是预定义的,或者,M是网络设备配置的。
  44. 根据权利要求38-43中任一项所述的方法,其特征在于,所述PSCCH在时域上占一个时隙中的所有可用于侧行传输的OFDM符号。
  45. 根据权利要求35-44中任一项所述的方法,其特征在于,所述SL-PRS占用目标时频资源中除所述PSCCH所占用的时频资源之外的其他时频资源中的部分或全部,其中,所述目标时频资源为可用于侧行传输的时频资源。
  46. 根据权利要求31或32所述的方法,其特征在于,所述PSCCH和所述SL-PRS在频域是通过梳齿结构频分复用的。
  47. 根据权利要求46所述的方法,其特征在于,所述SL-PRS用于解调所述PSCCH。
  48. 根据权利要求46或47所述的方法,其特征在于,所述PSCCH在频域所占的梳齿组合和所述SL-PRS在频域所占的梳齿组合间隔K个资源单元RE,其中,K为大于等于2的整数。
  49. 根据权利要求48所述的方法,其特征在于,K是预定义的,或者,K是网络设备配置的。
  50. 根据权利要求48或49所述的方法,其特征在于,目标时频资源中除所述PSCCH所占的时频资源和所述SL-PRS所占的时频资源之外的其他时频资源中的部分或全部也用于发送SL-PRS,或者,不用于发送SL-PRS,所述目标时频资源为可用于侧行传输的时频资源。
  51. 根据权利要求31-50中任一项所述的方法,其特征在于,所述PSCCH中包括解调参考信号DMRS,所述DMRS用作SL-PRS。
  52. 根据权利要求51所述的方法,其特征在于,所述PSCCH的天线端口和所述SL-PRS的天线端口相同。
  53. 根据权利要求31-52中任一项所述的方法,其特征在于,所述PSCCH的时频资源信息是根据预配置信息确定的,或者,根据网络设备的配置信息确定的。
  54. 根据权利要求53所述的方法,其特征在于,所述PSCCH所占的PRB资源通过侧行带宽部分BWP配置获取,所述侧行BWP配置用于配置第一资源池和PRB资源的关联关系,所述第一资源池不包括所述PSCCH所占的PRB资源,其中,所述第一资源池为所述侧行BWP上的资源池。
  55. 根据权利要求31-54中任一项所述的方法,其特征在于,所述SL-PRS用于确定定位信息。
  56. 一种无线通信的方法,其特征在于,包括:
    第二终端获取侧行定位参考信号SL-PRS相关信息;
    根据所述SL-PRS相关信息接收SL-PRS。
  57. 根据权利要求56所述的方法,其特征在于,所述SL-PRS相关信息包括以下中指示一项:
    时域资源信息,频域资源信息,资源预留信息,发送周期信息。
  58. 根据权利要求56或57所述的方法,其特征在于,所述SL-PRS相关信息是预配置的,或者网络设备配置的。
  59. 根据权利要求56-58中任一项所述的方法,其特征在于,所述SL-PRS在时域上占用一个时隙中的可用于侧行传输的正交分频复用OFDM符号中的部分或全部。
  60. 根据权利要求56-59中任一项所述的方法,其特征在于,所述SL-PRS在频域上占用可用于侧行传输的物理资源块PRB中的部分或全部。
  61. 一种终端设备,其特征在于,包括:
    通信单元,用于发送物理侧行控制信道PSCCH,所述PSCCH包括第一指示信息,所述第一指示信息用于指示侧行定位参考信号SL-PRS。
  62. 一种终端设备,其特征在于,包括:
    通信单元,用于接收物理侧行控制信道PSCCH,所述PSCCH包括第一指示信息,所述第一指示信息用于指示侧行定位参考信号SL-PRS;以及
    根据所述第一指示信息,接收SL-PRS。
  63. 一种终端设备,其特征在于,包括:
    处理单元,用于获取侧行定位参考信号SL-PRS相关信息;
    通信单元,用于根据所述SL-PRS相关信息发送SL-PRS。
  64. 一种终端设备,其特征在于,包括:
    处理单元,用于获取侧行定位参考信号SL-PRS相关信息;
    通信单元,用于根据所述SL-PRS相关信息接收SL-PRS。
  65. 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25中任一项所述的方法,或如权利要求26至30中任一项所述的方法。
  66. 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31至55中任一项所述的方法,或如权利要求56至60中任一项所述的方法。
  67. 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25中任一项所述的方法,或如权利要求26至30中任一项所述的方法,或如权利要求31至55中任一项所述的方法,或如权利要求56至60中任一项所述的方法。
  68. 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25中任一项所述的方法,或如权利要求26至30中任一项所述的方法,或如权利要求31至55中任一项所述的方法,或如权利要求56至60中任一项所述的方法。
  69. 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25中任一项所述的方法,或如权利要求26至30中任一项所述的方法,或如权利要求31至55中任一项所述的方法,或如权利要求56至60中任一项所述的方法。
  70. 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25中任一项所述的方法,或如权利要求26至30中任一项所述的方法,或如权利要求31至55中任一项所述的方法,或如权利要求56至60中任一项所述的方法。
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