WO2023028987A1 - Procédé de communication sans fil et dispositif terminal - Google Patents

Procédé de communication sans fil et dispositif terminal Download PDF

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Publication number
WO2023028987A1
WO2023028987A1 PCT/CN2021/116444 CN2021116444W WO2023028987A1 WO 2023028987 A1 WO2023028987 A1 WO 2023028987A1 CN 2021116444 W CN2021116444 W CN 2021116444W WO 2023028987 A1 WO2023028987 A1 WO 2023028987A1
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WIPO (PCT)
Prior art keywords
csi
resource
terminal device
resources
information
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PCT/CN2021/116444
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English (en)
Chinese (zh)
Inventor
赵振山
林晖闵
张世昌
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Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN202180099678.8A priority Critical patent/CN117529893A/zh
Priority to PCT/CN2021/116444 priority patent/WO2023028987A1/fr
Publication of WO2023028987A1 publication Critical patent/WO2023028987A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • the embodiments of the present application relate to the communication field, and more specifically, relate to a wireless communication method and a terminal device.
  • the transmitter needs to send the Channel State Information Reference Signal (CSI-RS ), to determine the optimal spatial domain transmit filter at the transmitting end, and/or, determine the optimal spatial domain receiving filter at the receiving end.
  • CSI-RS Channel State Information Reference Signal
  • how to specifically configure the CSI-RS resources used to transmit the CSI-RS so as to select the optimal spatial domain transmission filter or the optimal spatial domain reception filter based on the transmitted CSI-RS is a problem that needs to be solved.
  • Embodiments of the present application provide a wireless communication method and a terminal device.
  • CSI-RS resources for transmitting CSI-RS are configured, and CSI-RS is transmitted based on the configured CSI-RS resources, so that CSI-RS can be transmitted based on the transmitted CSI-RS RS selects the optimal spatial domain transmit filter or the optimal spatial domain receive filter.
  • a wireless communication method includes:
  • the first terminal device sends M CSI-RSs to the second terminal device by using the airspace transmission filter
  • one CSI-RS among the M CSI-RS occupies the penultimate time domain symbol and the penultimate time domain symbol among the time domain symbols available for sidelink transmission in a slot, and the M CSI-RS -
  • the RS is used to select a target airspace transmit filter, or the M CSI-RS are used to select a target airspace receive filter, and M is a positive integer.
  • a wireless communication method in a second aspect, includes:
  • one CSI-RS among the M CSI-RS occupies the penultimate time domain symbol and the penultimate time domain symbol among the time domain symbols available for sidelink transmission in a slot, and the M CSI-RS -
  • the RS is used to select a target airspace transmit filter, or the M CSI-RS are used to select a target airspace receive filter, and M is a positive integer.
  • a terminal device configured to execute the method in the first aspect above.
  • the terminal device includes a functional module for executing the method in the first aspect above.
  • a terminal device configured to execute the method in the second aspect above.
  • the terminal device includes a functional module for executing the method in the second aspect above.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect above.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect above.
  • an apparatus for implementing the method in any one of the first aspect to the second aspect above.
  • the device includes: a processor, configured to invoke and run a computer program from the memory, so that the device installed with the device executes the method in any one of the above first to second aspects.
  • a computer-readable storage medium for storing a computer program, and the computer program causes a computer to execute the method in any one of the above-mentioned first aspect to the second aspect.
  • a computer program product including computer program instructions, the computer program instructions causing a computer to execute the method in any one of the above first to second aspects.
  • a computer program which, when running on a computer, causes the computer to execute the method in any one of the above first to second aspects.
  • the first terminal device transmits M CSI-RSs to the second terminal device using the airspace transmission filter, and one CSI-RS among the M CSI-RSs occupies the time available for sidelink transmission in one time slot
  • the penultimate time domain symbol and the penultimate time domain symbol in the domain symbols configures the penultimate time domain symbol and the penultimate time domain symbol in the CSI-RS occupied time slot
  • the field symbols make CSI-RS and PSCCH or PSSCH not sent at the same time, which optimizes the transmission efficiency of CSI-RS.
  • FIG. 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.
  • Fig. 3 is a schematic diagram of uplink communication within a network coverage provided by the present application.
  • Fig. 4 is a schematic diagram of partial network coverage side communication provided by the present application.
  • Fig. 5 is a schematic diagram of outbound communication provided by the network coverage provided by the present application.
  • Fig. 6 is a schematic diagram of a side communication with a central control node provided by the present application.
  • Fig. 7 is a schematic diagram of unicast sidelink communication provided by the present application.
  • Fig. 8 is a schematic diagram of multicast sideline communication provided by the present application.
  • Fig. 9 is a schematic diagram of broadcast sideline communication provided by the present application.
  • Fig. 10 is a schematic diagram of a time slot structure in NR-V2X provided by the present application.
  • FIG. 11 is a schematic diagram of a time-frequency position of an SL CSI-RS provided by the present application.
  • Fig. 12 is a schematic diagram of not using analog beams and using analog beams according to the present application.
  • FIG. 13 is a schematic diagram of a TCI state for configuring a PDSCH provided by the present application.
  • Fig. 14 is a schematic flowchart of a wireless communication method provided according to an embodiment of the present application.
  • Fig. 15 is a schematic diagram of a CSI-RS symbol in a time slot according to an embodiment of the present application.
  • Fig. 16 is a schematic diagram of CSI-RS symbols in another time slot according to an embodiment of the present application.
  • Fig. 17 is a schematic diagram in which a period of a CSI-RS resource is 2 slots according to an embodiment of the present application.
  • FIG. 18 is a schematic diagram of a bitmap indicating PRBs that can be used to transmit CSI-RSs according to an embodiment of the present application.
  • 19 to 20 are respectively schematic diagrams of determining PRBs that can be used for transmitting CSI-RSs based on a starting frequency domain position and a frequency domain length according to an embodiment of the present application.
  • Fig. 21 is a schematic diagram of time domain resources of a CSI-RS resource set according to an embodiment of the present application.
  • Fig. 22 is a schematic diagram of a PRB that can be used to transmit a CSI-RS according to an embodiment of the present application.
  • Fig. 23 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.
  • Fig. 24 is a schematic block diagram of another terminal device provided according to an embodiment of the present application.
  • Fig. 25 is a schematic block diagram of a communication device provided according to an embodiment of the present application.
  • Fig. 26 is a schematic block diagram of a device provided according to an embodiment of the present application.
  • Fig. 27 is a schematic block diagram of a communication system provided according to an embodiment of the present application.
  • the technical solution of the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.
  • GSM Global System of Mobile
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • V2V Vehicle to Vehicle
  • V2X Vehicle to everything
  • the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, may also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and may also be applied to an independent (Standalone, SA) deployment Web scene.
  • Carrier Aggregation, CA Carrier Aggregation
  • DC Dual Connectivity
  • SA independent deployment Web scene
  • the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered as non-shared spectrum.
  • the embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, wherein the terminal equipment may also be referred to as 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 device, user agent or user device, etc.
  • user equipment User Equipment, UE
  • access terminal user unit
  • user station mobile station
  • mobile station mobile station
  • remote station remote terminal
  • mobile device user terminal
  • terminal wireless communication device
  • wireless communication device user agent or user device
  • the terminal device can be a station (STATION, ST) in a 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, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication functions, 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 future Terminal equipment in the evolved public land mobile network (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, 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.
  • a virtual reality (Virtual Reality, VR) terminal device 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.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • 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 only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the network device may be a device for communicating with the mobile device, and the network device may be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA , or a base station (NodeB, NB) in WCDMA, or an evolved 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 A network device or a base station (gNB) in a network device or a network device in a future evolved PLMN network or a network device in an NTN network.
  • AP Access Point
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • Evolutional Node B, eNB or eNodeB evolved base station
  • LTE Long Term Evolution
  • eNB evolved base station
  • gNB base station
  • the network device may have a mobile feature, for example, the network device may be a mobile device.
  • the network equipment may be a satellite or a balloon station.
  • the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous 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, and other locations.
  • the network device may provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, a cell corresponding to a base station), the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell), and the small cell here may include: a metro cell (Metro cell), a micro cell (Micro cell), a pico cell ( Pico cell), Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • the transmission resources for example, frequency domain resources, or spectrum resources
  • the cell may be a network device (
  • the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell)
  • the small cell here may include: a metro cell (Metro cell), a micro cell (Micro
  • the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.
  • predefined or “preconfigured” can be realized 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).
  • the application does not limit its specific implementation.
  • pre-defined may refer to defined in the protocol.
  • the "protocol” may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, which is not limited in the present application.
  • Fig. 1 is a schematic diagram of a communication system to which the embodiment of the present application is applicable.
  • 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 to which the embodiment of the present application is applicable.
  • the vehicle-mounted terminals (vehicle-mounted terminal 131 and vehicle-mounted terminal 132 ) autonomously select transmission resources on sidelink resources for data transmission.
  • the vehicle-mounted terminal may select transmission resources randomly, or select transmission resources by listening.
  • side communication according to the network coverage of the communicating terminal, it can be divided into network coverage inner communication, as shown in Figure 3; part of the network coverage side communication, as shown in Figure 4 ; and network coverage outer line communication, as shown in FIG. 5 .
  • Figure 3 In inline communication within the network coverage, all terminals performing sideline communication are within the coverage of the base station. Therefore, the above-mentioned terminals can perform sideline communication based on the same sideline configuration by receiving configuration signaling from the base station .
  • FIG 4 In the case of partial network coverage for sidelink communication, some terminals performing sidelink communication are located within the coverage of the base station. These terminals can receive configuration signaling from the base station and perform sidelink communication according to the configuration of the base station. However, terminals located outside the network coverage cannot receive the configuration signaling from the base station. In this case, the terminals outside the network coverage will use the pre-configuration information and the physical The information carried in the Physical Sidelink Broadcast Channel (PSBCH) determines the sidelink configuration for sidelink communication.
  • PSBCH Physical Sidelink Broadcast Channel
  • Figure 5 For outbound communication under network coverage, all terminals performing side communication are located outside the network coverage, and all terminals determine side communication according to pre-configuration information to perform side communication.
  • FIG. 6 For side communication with a central control node, multiple terminals form a communication group.
  • a central control node in the communication group which can also be called a 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 of group members; performing resource coordination, allocating side transmission resources for other terminals, receiving side communication feedback information from other terminals; performing resource coordination with other communication groups, etc.
  • device-to-device communication is based on a sidelink (Sidelink, SL) transmission technology based on device to device (D2D), and the communication data in the traditional cellular system is received or sent through the base station.
  • the method is different.
  • the Internet of Vehicles system adopts the method of terminal-to-terminal direct communication, so it has higher spectral efficiency and lower transmission delay.
  • Two transmission modes are defined in 3GPP, which are respectively recorded as: the first mode (sidelink resource allocation mode 1) and the second mode (sidelink resource allocation mode 2).
  • the first mode the transmission resources of the terminal are allocated by the base station, and the terminal sends 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, and can also allocate semi-static transmission to the terminal H. As shown in FIG. 3 , the terminal is located within the coverage of the network, and the network allocates transmission resources for sidelink transmission to the terminal.
  • the second mode the terminal selects a resource from the resource pool for data transmission.
  • the terminal is located outside the coverage of the cell, and the terminal independently selects transmission resources from the pre-configured resource pool for sidelink transmission; or, as shown in Figure 3, the terminal independently selects transmission resources from the resource pool configured by the network Make sideways transfers.
  • New Radio-Vehicle to Everything NR-V2X
  • NR-V2X New Radio-Vehicle to Everything
  • it supports automatic driving, so it 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 terminal at the receiving end, as shown in Figure 7, unicast transmission is performed between UE1 and UE2; for multicast transmission, the receiving end 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 end terminals; for broadcast transmission mode, its receiving The terminal is any terminal around the transmitting terminal. As shown in FIG. 9 , UE1 is the transmitting terminal, and 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 indicates that the time slot does not include the physical sidelink feedback channel (Physical Sidelink Feedback Channel, PSFCH) time slot structure; the diagram in Figure 10 ( b) shows 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 (physical resource blocks, PRBs) in the frequency domain.
  • Orthogonal frequency division multiplexing Orthogonal frequency division multiplexing (Orthogonal frequency- division multiplexing (OFDM) symbols can occupy ⁇ 10, 12 15, 20, 25 ⁇ physical resource blocks (physical resource blocks, PRBs) in the frequency domain.
  • OFDM Orthogonal frequency division multiplexing
  • 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 impose additional restrictions on PSSCH resource selection or allocation.
  • the PSSCH also starts from the second side row symbol of the time slot, the last time domain symbol in the time slot is a guard interval (Guard Period, GP) symbol, and the remaining symbols are mapped to the PSSCH.
  • the first side row symbol in this time slot is the repetition of the second side row symbol.
  • the receiving terminal uses the first side row symbol as an automatic gain control (AGC) symbol. Data is generally not used for data demodulation.
  • the PSSCH occupies M subchannels in the frequency domain, and each subchannel includes N consecutive PRBs. As shown in (a) in Figure 10.
  • the second-to-last symbol and the third-to-last symbol in the time slot are used for PSFCH channel transmission, and the data on the third-to-last symbol is the repetition of the data on the second-to-last symbol.
  • One time-domain symbol before the PSFCH channel is used as a GP symbol, as shown in (b) in FIG. 10 .
  • SL CSI-RS is supported in NR-V2X, and SL CSI-RS can be sent when the following three conditions are met:
  • the UE sends the corresponding PSSCH, that is, the UE cannot only send SL CSI-RS;
  • High-level signaling activates reporting of side channel state information (Channel State Information, CSI);
  • the corresponding bit in the second-order SCI sent by the UE triggers the reporting of the side CSI.
  • the maximum number of ports supported by the SL CSI-RS is 2.
  • the SL CSI-RS of different ports are in the same Orthogonal frequency-division multiplexing (OFDM) symbol of two adjacent resource elements ( Resource Element (RE) is multiplexed by code division, and the average number of REs occupied by the SLCSI-RS of each port in a PRB is 1, that is, the density is 1. Therefore, the SL CSI-RS can only appear on one OFDM symbol at most in one PRB, and the specific position of this OFDM symbol is determined by the transmitting terminal.
  • the position of the OFDM symbol where the SL CSI-RS is located is indicated by the first symbol (sl-CSI-RS-FirstSymbol) parameter of the side row CSI-RS in PC5-Radio Resource Control (RRC).
  • RRC PC5-Radio Resource Control
  • the position of the first RE occupied by the SL CSI-RS in a PRB is indicated by the side row CSI-RS frequency domain allocation (sl-CSI-RS-FreqAllocation) parameter in PC5-RRC, if the SL CSI-RS is a port , the parameter is a bitmap with a length of 12, corresponding to 12 REs in one PRB. If the SL CSI-RS has two ports, this parameter is a bitmap with a length of 6. In this case, the SL CSI-RS occupies two REs of 2f(1) and 2f(1)+1, where f(1 ) represents the index of the bit whose value is 1 in the above bitmap.
  • sl-CSI-RS-FreqAllocation side row CSI-RS frequency domain allocation
  • the frequency domain position of the SL CSI-RS is also determined by the transmitting terminal, but the determined frequency domain position of the SL CSI-RS cannot conflict with a phase tracking reference signal (Phase Tracking Reference Signal, PT-RS).
  • Figure 11 shows a schematic diagram of the time-frequency location of SL CSI-RS.
  • Design goals for NR or 5G systems include large-bandwidth communications in high-frequency bands, such as frequency bands above 6 GHz. When the operating frequency becomes higher, the path loss in the transmission process will increase, thereby affecting the coverage capability of the high-frequency system.
  • an effective technical solution is based on a massive antenna array (Massive MIMO) to form a shaped beam with greater gain, overcome propagation loss, and ensure system coverage.
  • Mass MIMO massive antenna array
  • the millimeter-wave antenna array due to the shorter wavelength, smaller antenna element spacing and smaller aperture, allows more physical antenna elements to be integrated in a limited-sized two-dimensional antenna array.
  • Due to the limited size of the millimeter-wave antenna array from Considering factors such as hardware complexity, cost overhead, and power consumption, digital beamforming cannot be used, but analog beamforming is usually used, which can reduce the complexity of device implementation while enhancing network coverage.
  • a cell uses a wider beam (beam) to cover the entire cell. Therefore, at each moment, the terminal equipment within the coverage of the cell has the opportunity to obtain the transmission resources allocated by the system.
  • NR/5G multi-beam (Multi-beam) system covers the entire cell through different beams, that is, each beam covers a small range, and the effect of multiple beams covering the entire cell is achieved through time sweeping (sweeping) .
  • Fig. 12 shows a schematic diagram of a system without beamforming and with beamforming.
  • (a) in Figure 12 is a traditional LTE and NR system without beamforming, and
  • (b) in Figure 12 is an NR system using beamforming:
  • the LTE/NR network side uses a wide beam to cover the entire cell, and users 1-5 can receive network signals at any time.
  • the network side in (b) in Figure 12 uses narrower beams (such as beams 1-4 in the figure), and uses different beams to cover different areas in the cell at different times, for example, at time 1,
  • the NR network side covers the area where user 1 is located through beam 1; at time 2, the NR network side covers the area where user 2 is located through beam 2; at time 3, the NR network side covers the area where user 3 and user 4 are located through beam 3; At time 4, the NR network side uses beam 4 to cover the area where user 5 is located.
  • Analog beamforming can be used not only for network-side devices, but also for terminals. At the same time, analog beamforming can not only be used for signal transmission (called transmit beam), but also can be used for signal reception (called receive beam).
  • SS block Synchronization Signal block
  • CSI-RS Channel State Information Reference Signal
  • the physical downlink control channel Physical Downlink Control Channel, PDCCH
  • the physical downlink shared channel Physical Downlink Shared Channel, PDSCH
  • omnidirectional antennas or near-omnidirectional antennas are used to receive signals sent by different downlink transmission beams of the base station.
  • corresponding beam indication information (beam indication) is needed to assist the terminal device to determine the related information of the transmitting beam on the network side, or the corresponding receiving beam related information on the terminal side.
  • the beam indication information does not directly indicate the beam itself, but through the quasi-co-located (QCL) assumption between signals (such as the QCL assumption of QCL type "QCL-TypeD") Make instructions.
  • QCL quasi-co-located
  • determining the statistical characteristics of receiving corresponding channels/signals is also based on the QCL quasi-co-location assumption.
  • the characteristics of the transmission environment corresponding to the data transmission can be used to improve the reception algorithm.
  • the statistical properties of the channel can be used to optimize the design and parameters of the channel estimator.
  • these characteristics corresponding to data transmission are represented by QCL status (QCL-Info).
  • TRP Transmission Reception Point
  • panel panel
  • beam beam
  • TCI Transmission Configuration Indicator
  • a TCI state can contain the following configurations:
  • TCI state identifier used to identify a TCI state
  • a QCL information contains the following information:
  • QCL type (type) configuration which can be one of QCL-Type A, QCL-TypeB, QCL-TypeC or QCL-TypeD;
  • the QCL reference signal configuration includes the cell identification (ID) where the reference signal is located, the Band Width Part (BWP) identification (ID) and the identification of the reference signal (which can be a CSI-RS resource identification or a synchronization signal block index).
  • ID the cell identification
  • BWP Band Width Part
  • ID the identification of the reference signal (which can be a CSI-RS resource identification or a synchronization signal block index).
  • the QCL type of at least one QCL information must be one of QCL-TypeA, QCL-TypeB, and QCL-TypeC, and the QCL type of the other QCL information must be QCL-Type d.
  • 'QCL-TypeA' ⁇ Doppler shift (Doppler shift), Doppler spread (Doppler spread), average delay (average delay), delay spread (delay spread) ⁇ ;
  • 'QCL-TypeB' ⁇ Doppler shift (Doppler shift), Doppler spread (Doppler spread) ⁇ ;
  • 'QCL-TypeC' ⁇ Doppler shift (Doppler shift), average delay (average delay) ⁇ ;
  • the network side can indicate the corresponding TCI state for the downlink signal or downlink channel.
  • the terminal can assume that the target downlink signal is consistent with the reference
  • the large-scale parameters of the SSB or reference CSI-RS resources are the same, and the large-scale parameters are determined by the QCL type configuration.
  • the terminal can adopt and receive the reference SSB or reference CSI-RS resource.
  • the receiving beam that is, the Spatial Rx parameter
  • the target downlink channel (or downlink signal) and its reference SSB or reference CSI-RS resource are sent by the same TRP or the same panel or the same beam on the network side. If the transmission TRP or transmission panel or transmission beam of two downlink signals or downlink channels are different, different TCI states are usually configured.
  • control resource set (Control Resource Set, CORESET) TCI status.
  • the available TCI state set is indicated by RRC signaling, and some of the TCI states are activated by MAC layer signaling, and finally activated by the TCI state indication field in the downlink control information (Downlink Control Information, DCI)
  • DCI Downlink Control Information
  • One or two TCI states are indicated in the TCI state for the PDSCH scheduled by the DCI.
  • the case of two TCI states is mainly for scenarios where multiple TRPs are similar.
  • the network device indicates N candidate TCI states through RRC signaling, activates K TCI states through MAC signaling, and finally indicates 1 from the activated TCI states through the TCI state indication field in DCI One or two TCI states to use.
  • the millimeter wave frequency band can be used in the sidewalk transmission system to increase the transmission rate of the sidewalk communication system, and in the sidewalk millimeter wave transmission, the transmitter needs to send CSI-RS to determine the optimal airspace transmission filter of the transmitter, and /or, determine the optimal spatial domain receiving filter at the receiving end.
  • the transmitter needs to send CSI-RS to determine the optimal airspace transmission filter of the transmitter, and /or, determine the optimal spatial domain receiving filter at the receiving end.
  • how to specifically configure the CSI-RS resources used to transmit CSI-RS to select the optimal spatial domain transmit filter (transmit beam) or the optimal spatial domain receive filter (receive beam) based on the transmitted CSI-RS is a need. solved problem.
  • each CSI-RS must be sent together with the PSSCH.
  • the sender and the receiver have not yet determined the optimal airspace transmit filter and the spacespace receive filter, so normal data transmission is usually not performed, therefore, in The PSSCH sent during the selection process of the spatial domain transmit filter and the spatial domain receive filter usually does not carry normal sidelink data, but usually only fills redundant bits, padding bits, etc., which will reduce transmission efficiency.
  • the sender when the sender works in mode 2 (namely the above-mentioned second mode), the sender determines transmission resources based on interception, and due to mechanisms such as re-evaluation and pre-emption, the sender may Resource reselection is performed, so the receiving end cannot accurately know the resources for sending CSI-RS at the sending end, and in the process of determining the spatial receiving filter, the receiving end needs to use different spatial receiving filters to receive the CSI-RS sent by the sending end , therefore, the receiving end needs to accurately know the resource location occupied by the CSI-RS sent by the sending end.
  • this application proposes a scheme for transmitting CSI-RS on the side.
  • the transmitting end uses a spatial transmission filter to transmit M CSI-RSs to the receiving end, and one CSI-RS among the M CSI-RSs occupies one
  • the second-to-last time-domain symbol and the third-to-last time-domain symbol among the time-domain symbols that can be used for sidelink transmission in the time slot, that is, the penultimate time-domain symbol in the time-domain symbols occupied by the CSI-RS is configured in this embodiment of the application
  • the two time-domain symbols and the penultimate time-domain symbol make the CSI-RS and PSCCH or PSSCH not be sent at the same time, which optimizes the transmission efficiency of the CSI-RS.
  • the receiving end can determine the slot positions of the subsequent multiple CSI-RS based on the slot where the first CSI-RS is located, so that corresponding receiving beams can be determined in advance and received.
  • FIG. 14 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG. 14 , the wireless communication method 200 may include at least part of the following content:
  • the first terminal device transmits M CSI-RSs to the second terminal device using a spatial transmission filter; wherein, one CSI-RS among the M CSI-RSs occupies a time domain available for sidelink transmission in one time slot
  • the penultimate time domain symbol and the penultimate time domain symbol in the symbol, the M CSI-RS are used to select the target spatial domain transmit filter, or the M CSI-RS are used to select the target spatial domain receive filter , M is a positive integer;
  • the second terminal device receives the M CSI-RSs transmitted by the first terminal device using a spatial domain transmission filter.
  • the first terminal device is a sending end device
  • the second terminal device is a receiving end device
  • the optimal airspace transmission filter of the first terminal device may be selected based on the CSI-RS sent by the first terminal device, or the optimal filter of the second terminal device may be selected based on the CSI-RS sent by the first terminal device.
  • Superior Spatial Receive Filter may be selected based on the CSI-RS sent by the first terminal device.
  • the transmitting end uses different beams to send CSI-RS in turn, and the receiving end uses the same receiving beam to receive and transmit CSI-RS respectively.
  • multiple CSI-RS sent by the terminal and measure the detected CSI-RS, select the CSI-RS with the best measurement result and its corresponding resource information (such as CSI-RS resource index or CSI-RS corresponding time slot information) is fed back to the sending end, and the sending beam corresponding to the CSI-RS resource is the optimal sending beam for the receiving end.
  • resource information such as CSI-RS resource index or CSI-RS corresponding time slot information
  • the sending end uses the same beam to send the CSI-RS
  • the sending end uses the optimal receiving beam for the receiving end
  • the optimal transmit beam sends CSI-RS
  • the receiving end uses different receiving beams in turn to receive the CSI-RS sent by the transmitting end, and performs measurement, and selects the beam corresponding to the receiving beam with the best measurement result as the optimal beam of the receiving end.
  • the sending end uses the optimal sending beam to perform lateral transmission
  • the receiving end can use the corresponding optimal receiving beam to perform corresponding reception.
  • the sending end adopts the above process for different sending beams respectively, and can respectively determine the optimal receiving beam corresponding to each sending beam. Therefore, when the sending end is performing sidewalk transmission, the sending end can indicate the sending beam used for the sidewalk transmission, and the receiving end can determine the corresponding optimal receiving beam, and use the optimal receiving beam for sidewalking. take over.
  • the millimeter wave frequency band is used in the sidelink transmission system.
  • the sending end usually uses beamforming Line transmission.
  • the spatial domain transmission filter may also be called a transmission beam (transmission beam) or a spatial relationship (Spatial relation) or a spatial configuration (spatial setting) or a spatial transmission parameter (SpatialTX parameter).
  • a spatial domain receive filter may also be called a reception beam (reception beam) or a spatial reception parameter (SpatialRX parameter).
  • the spatial domain transmit filter and the spatial domain receive filter are collectively referred to as a spatial domain filter
  • the spatial domain transmit filter may also be referred to as a transmitting end spatial domain filter
  • the spatial domain receiving filter may also be referred to as a receiving end spatial domain filter or a receiving end spatial domain filter. beam.
  • a "slot” may also be other time units, for example, a mini-slot, a frame, a subframe, a time-domain symbol, an absolute time, or a relative time.
  • the "time domain symbol” may also be other time units, for example, mini-slot, frame, subframe, time slot, absolute time, and relative time. This application is not limited to this.
  • the CSI-RSs in the M CSI-RSs are side row CSI-RSs.
  • sending M CSI-RSs may also be expressed as "sending M CSI-RS resources", which is not limited in this application. That is, in this embodiment of the present application, the first terminal device sending the CSI-RS may also be expressed as the first terminal device sending the CSI-RS resource, that is, the two are equivalent expressions. Similarly, the CSI-RS measurement result is equivalent to the CSI-RS resource measurement result.
  • the value of M when the M CSI-RS are used to select the target spatial domain transmit filter can be the same as the value of M when the M CSI-RS are used to select the target spatial domain receive filter, or different, this application does not limit it.
  • the first terminal device sending the M CSI-RSs to the second terminal device using a spatial domain transmission filter may refer to: the first terminal device transmits the M CSI-RSs using different spatial domain transmission filters, For example, the M CSI-RSs correspond to different spatial transmission filters; or, the first terminal device does not use the same spatial transmission filter to transmit the M CSI-RSs, for example, sending the M CSI-RSs uses at least Two different spatial domain transmit filters are used.
  • the first terminal device transmits M CSI-RSs to the second terminal device using M different spatial domain transmission filters, where each spatial domain transmission filter corresponds to one CSI-RS.
  • the first terminal device uses K spatial domain transmission filters to transmit M CSI-RSs to the second terminal device, where K is less than M and K is greater than 1, that is, the M CSI-RS There are at least two CSI-RSs among the RSs that are transmitted through different spatial transmission filters.
  • the corresponding repetition in the configuration information of the CSI-RS resource or CSI-RS resource set corresponding to the M CSI-RS takes a first value, and the first value is used to indicate that the first terminal device does not use the same spatial domain transmission filter to transmit the CSI-RS. In other words, the first value is used to instruct the first terminal device to use different spatial domain transmission filters to transmit the CSI-RS.
  • the first value may be off (off), indicating that the M CSI-RSs sent by the first terminal device are used to select a target airspace transmission filter.
  • the corresponding repetition in the configuration information of the CSI-RS resource or CSI-RS resource set corresponding to the M CSI-RS takes a second value, and the second value is used to indicate that the first terminal device uses the same spatial domain transmission filter to transmit the CSI-RS.
  • the second value may be on (on), indicating that the M CSI-RSs sent by the first terminal device are used to select a target spatial domain receiving filter.
  • the penultimate time domain symbol is a time domain symbol occupied by the CSI-RS.
  • the data on the third-to-last time-domain symbol is a repetition of the data on the second-to-last time-domain symbol, or, the data on the third-to-last time-domain symbol is the same as the second-to-last time-domain symbol
  • the data on each time domain symbol is the same.
  • the penultimate time domain symbol is an AGC symbol.
  • the penultimate time-domain symbol is a time-domain symbol occupied by the CSI-RS.
  • the data on the second-to-last time-domain symbol is a repetition of the data on the third-to-last time-domain symbol, or, the data on the third-to-last time-domain symbol is the same as the second-to-last time-domain symbol
  • the data on each time domain symbol is the same.
  • the penultimate time domain symbol is an AGC symbol.
  • a time domain symbol before the penultimate time domain symbol is a GP symbol
  • a time domain symbol after the penultimate time domain symbol is a GP symbol
  • the penultimate time domain symbol and the penultimate time domain symbol are used to transmit CSI-RS, and one time domain symbol before the penultimate time domain symbol is a GP symbol, and a time-domain symbol after the penultimate time-domain symbol is a GP symbol.
  • the terminal transmitting PSCCH and/or PSSCH and the terminal transmitting CSI-RS in one slot may be different terminals. It should be understood that FIG. 15 only exemplarily shows the time slot structure including CSI-RS resources, but does not specifically reflect the relationship between CSI-RS resources, PSCCH and PSSCH in the frequency domain.
  • the CSI-RS occupies the penultimate time-domain symbol and the penultimate time-domain symbol of the time-domain symbols that can be used for sidelink transmission , as shown in Figure 16, the last 3 time domain symbols in the time slot cannot be used for sidelink transmission, and the remaining 11 time domain symbols can be used for sidelink transmission.
  • the first terminal device determines the CSI-RS resource or CSI-RS resource set corresponding to the M CSI-RS according to the CSI-RS resource configuration information.
  • the CSI-RS resource configuration information may include part or all of the CSI-RS resource configuration information in the resource pool configuration information or the side BWP configuration information, or the CSI-RS resource configuration information is Determined based on the resource pool configuration information or the CSI-RS resource configuration information in the side BWP configuration information, or the CSI-RS resource configuration information is determined from the CSI-RS resource configuration information in the resource pool configuration information or the side BWP configuration information information obtained.
  • the first terminal device may send the CSI-RS resource configuration information to the second terminal device, so that the second terminal device may determine the M CSI-RS resource configuration information based on the CSI-RS resource configuration information.
  • the CSI-RS resource configuration information includes but not limited to at least one of the following:
  • the cycle of CSI-RS resources, the time slot offset of CSI-RS resources, the minimum time interval, the time interval between two adjacent CSI-RSs, the indication information of frequency domain resources that can be used to transmit CSI-RS, each CSI-RS The frequency domain resources included in RS resources, the minimum frequency domain resource size included in each CSI-RS resource, the interval between adjacent PRBs mapping CSI-RS, the indication information of the frequency domain position of CSI-RS resources in a PRB, CSI -RS density, indicating information for indicating the number of CSI-RS resources multiplexed by means of code division multiplexing (CDM), code division multiplexing type, and scrambling code identifier.
  • CDM code division multiplexing
  • the period of the CSI-RS resource included in the CSI-RS resource configuration information may be represented by the number of time slots.
  • the period of the CSI-RS resource is P, which means that every P time slot includes a time slot for transmitting CSI-RS, or means that every P time slot includes a time slot for CSI-RS Gap.
  • P ⁇ 1,2,4,8 ⁇ , which means that every 1/2/4/8 time slots includes a time slot for transmitting CSI-RS.
  • the time slot offset of the CSI-RS resource included in the CSI-RS resource configuration information may be represented by the number of time slots.
  • the time slot offset of the CSI-RS resource indicates the time slot offset of the first time slot including CSI-RS relative to the first time domain position, where the first time domain position includes SFN#0 The first slot in , or the first slot in DFN#0.
  • the minimum time interval included in the CSI-RS resource configuration information may be represented by the number of time slots.
  • the minimum time interval indicates the minimum time interval between the CSI-RS and its associated first indication information, where the first indication information is used to instruct the first terminal device to send the CSI-RS, or the first indication information It is used to indicate that the first terminal device will send a CSI-RS.
  • the minimum time interval indicates the minimum time interval between the CSI-RS and its associated SCI or PSCCH, where the SCI or PSCCH is used to indicate sending the CSI-RS.
  • the minimum time interval is equal to 0.
  • the minimum time interval is not included in the CSI-RS resource configuration information. That is, if the minimum time interval is not included in the CSI-RS resource configuration information, the default value is 0, which means that the first indication information and the first CSI-RS among the M CSI-RS are within in the same time slot.
  • the first indication information may be SCI.
  • the cycle of CSI-RS resources is 2 slots
  • the minimum time interval represents the minimum time interval between the first CSI-RS in at least one CSI-RS associated with the SCI and the time slot where the SCI is located.
  • the time interval between the two adjacent CSI-RSs included in the CSI-RS resource configuration information is represented by the number of time slots, or, the two adjacent CSI-RSs included in the CSI-RS resource configuration information
  • the time interval of the RS is represented by the number of cycles of the CSI-RS resource.
  • the SCI is sent at time slot n to indicate the transmission of 4 CSI-RS
  • the first determined CSI-RS is located in the time slot n+2
  • the time slots of the four CSI-RSs can be determined as: n+2; n+6; n+10; n+14.
  • the transmission end when the sending end instructs to send CSI-RS through SCI (or indication information), in the process of determining the spatial domain transmission filter (transmission beam) or the spatial domain reception filter (reception beam), the transmission end will send multiple CSI -RS.
  • the time domain position of the first CSI-RS can be determined through SCI (or indication information), and further, the time interval between two adjacent CSI-RSs can be determined according to the time interval between two adjacent CSI-RSs, The time domain positions of multiple CSI-RSs can be determined.
  • the time interval between two adjacent CSI-RSs is the time interval of one CSI-RS resource. cycle. That is, the sending end sends CSI-RSs respectively in consecutive CSI-RS resource periods. For example, the sending end does not configure the time interval between two adjacent CSI-RSs, the period of the CSI-RS resource is 2 slots, and the SCI is sent at slot n to indicate the sending of 4 CSI-RSs, the first determined CSI-RS The RS is located in the time slot n+2. Further, the time slots of the four CSI-RSs can be determined as: n+2; n+4; n+6; n+8.
  • the number of time slots refers to the number of logical time slots in the resource pool.
  • the frequency-domain resource indication information that can be used to transmit CSI-RS resources included in the CSI-RS resource configuration information is used to determine the information of PRBs that can be used to transmit CSI-RS.
  • the information of the PRB that can be used to transmit the CSI-RS is indicated by a bitmap, wherein each bit in the bitmap corresponds to a PRB, and the length of the bitmap is according to at least one of the following Determine: the number of PRBs included in the sidelink carrier, the number of PRBs included in the sidelink BWP, and the number of PRBs included in the resource pool.
  • the system includes 30 PRBs, among which, PRB4, PRB9, PRB14, PRB19, PRB24, and PRB29 have been allocated for PSFCH transmission, and the available PRBs for CSI-RS can be indicated through a 30-bit long bitmap , as shown in Figure 18, the bits in the bitmap take 0 to indicate PRBs that are not available for CSI-RS, and the bits in the bitmap take 1 to indicate PRBs that are available for CSI-RS, where CSI-RS is available PRB includes PRB 0, PRB 1, PRB 2, PRB 5, PRB 6, PRB 7, PRB 10, PRB 11, PRB 12, PRB 15, PRB 16, PRB 17, PRB 20, PRB 21, PRB 22, PRB 25, PRB 26, PRB 27.
  • the information of the PRBs that can be used to transmit the CSI-RS is determined by the starting frequency domain position and frequency domain length that can be used to transmit the CSI-RS.
  • the frequency domain resources used for transmitting PSFCH and/or sidelink positioning reference signals included in the frequency domain resources determined based on the starting frequency domain position and the frequency domain length are not used for transmitting CSI-RS.
  • the frequency domain length is used to indicate the number of PRBs available for CSI-RS transmission.
  • the frequency domain resource indication information that can be used to transmit CSI-RS resources can indicate the frequency domain start position and frequency domain length respectively, or the frequency domain resource indication information that can be used to transmit CSI-RS resources can jointly indicate the frequency domain start position and frequency domain length.
  • the resource indicator value (resource indicator value, RIV) can be determined according to the frequency domain starting position and the frequency domain length, and the frequency domain resource indication information that can be used to transmit CSI-RS resources includes the RIV value, according to the RIV value. Determine the corresponding frequency domain starting position and frequency domain length.
  • the end position of the frequency domain can be determined by the frequency domain start position and frequency domain length, if in the frequency domain start If there is a PRB used to transmit PSFCH between the position and the end position, the PRB used to transmit PSFCH is not used to transmit CSI-RS; that is, the PRB used to transmit CSI-RS does not include the PRB configured to transmit PSFCH.
  • the system includes 30 PRBs, of which PRB4, PRB9, PRB14, PRB19, PRB24, and PRB29 have been allocated for PSFCH transmission, then the starting PRB can be configured as PRB6, and the frequency domain length is 10 PRBs, so , the determined PRB range is from PRB6 to PRB15. Since it includes PRB9 and PRB14 that have been used for PSFCH transmission, these two PRBs (PRB9 and PRB14) cannot be used to transmit CSI-RS, but can be used to transmit CSI-RS PRB Includes PRBs with indices ⁇ 6, 7, 8, 10, 11, 12, 13, 15 ⁇ .
  • the frequency domain length is used to indicate the total number of PRBs used for CSI-RS, if the CSI-RS frequency is determined If the domain resource process includes the PRB used to transmit PSFCH, skip the PRB used to transmit PSFCH, and judge whether the next PRB is a PRB that can be used for CSI-RS, until the number of PRBs indicated by the frequency domain length is determined .
  • the system includes 30 PRBs, of which PRB4, PRB9, PRB14, PRB19, PRB24, and PRB29 have been allocated for PSFCH transmission, then the starting PRB can be configured as PRB6, and the frequency domain length is 10 PRBs.
  • PRBs that can be used for CSI-RS resources are determined, and PRB9 and PRB14 are used to transmit PSFCH. Therefore, these two PRBs (PRB9 and PRB14) cannot be used to transmit CSI-RS resources, skip these two PRBs (PRB9 and PRB14), continue to judge whether other PRBs are available, therefore, the final 10 PRBs that can be used to transmit CSI-RS include the index ⁇ 6,7,8,10,11,12,13,1516,17 ⁇ PRB.
  • the frequency domain resources included in each CSI-RS resource included in the CSI-RS resource configuration information may be represented by the number of PRBs, for example, each CSI-RS resource occupies 12 PRBs.
  • the frequency domain resources included in each CSI-RS resource may be represented by the number of subchannels.
  • the frequency domain resources included in each CSI-RS resource may be represented by the number of PRBs available for CSI-RS transmission.
  • the size of frequency domain resources available for CSI-RS transmission determined according to the CSI-RS resource configuration information should be divisible by the size of frequency domain resources included in each CSI-RS. Therefore, the configured frequency domain resources available for CSI-RS transmission can transmit an integer number of CSI-RSs, and the frequency domain resources occupied by each CSI-RS are of the same size.
  • the size of the frequency domain occupied by the CSI-RS can be determined based on the size of the frequency domain of the associated PSSCH.
  • the CSI-RS since the CSI-RS is not sent simultaneously with the PSCCH/PSSCH, it is necessary to additionally determine the size of the frequency domain resource occupied by the CSI-RS.
  • the interval between adjacent PRBs that map CSI-RS included in the CSI-RS resource configuration information is used to determine the interval between two adjacent PRBs among multiple PRBs mapped by one CSI-RS, where , the interval between two adjacent PRBs is represented by the number of PRBs available for transmitting CSI-RS.
  • a CSI-RS is not mapped to all PRBs in the frequency domain resources occupied by the CSI-RS, and configuration information may be used to indicate the interval between adjacent PRBs where the CSI-RS is mapped.
  • the first PRB mapped to the CSI-RS is PRB2
  • the interval between adjacent PRBs mapped to the CSI-RS is 4 PRBs
  • the CSI-RS is mapped to PRB2, PRB6, PRB10, PRB14, etc.
  • the CSI-RS resource configuration information does not include the interval between adjacent PRBs to which CSI-RSs are mapped, one CSI-RS occupies adjacent PRBs that can be used for CSI-RS transmission.
  • the interval between adjacent PRBs for CSI-RS mapping is not configured, its default value is 1 PRB, that is, the CSI-RS occupies adjacent PRBs that can be used for CSI-RS mapping.
  • the indication information of the frequency domain position of the CSI-RS resource in the one PRB included in the CSI-RS resource configuration information is used to indicate the frequency domain position of the CSI-RS resource in one PRB. Specifically, for example, it may indicate which REs are used to transmit the CSI-RS in one PRB. For example, REs that can be used to transmit CSI-RSs in a PRB are indicated in the form of a bitmap.
  • the indication information of the frequency domain position of the CSI-RS resource in the one PRB is associated with the CSI-RS resource set, that is, the RE in the PRB occupied by all the CSI-RS in one CSI-RS resource set same.
  • the resource of CSI-RS can be distinguished by the time slot information of the CSI-RS , at this time, the REs occupied by all the CSI-RS resources in one CSI-RS resource set in one PRB may be the same.
  • the M CSI-RSs sent by the first terminal device occupy the same REs in the PRB.
  • the CSI-RS density included in the CSI-RS resource configuration information is used to indicate the number of REs occupied by the CSI-RS of each CSI-RS port in each PRB. If the CSI-RS density is 2, it means that in each PRB, the CSI-RS of each antenna port occupies 2 REs. When the CSI-RS density is less than 1, PRB information for mapping CSI-RS is also included. For example, if the CSI-RS density is 0.5, that is, each antenna port occupies 1 RE in every 2 PRBs, and further, an indication information is included to indicate the PRB information for mapping CSI-RS in every 2 PRBs, such as an odd number (or Even number) CSI-RS is mapped on the PRB.
  • the indication information included in the CSI-RS resource configuration information for indicating the number of CSI-RS resources to be multiplexed by means of CDM may specifically indicate: for the same time-frequency resource, it can be performed by code division The number of multiplexed CSI-RS resources.
  • the code division multiplexing type included in the CSI-RS resource configuration information is used to determine the CSI-RS pattern, that is, the CSI-RS pattern in one PRB.
  • the code division multiplexing type includes: CDM, or, CDM and frequency-division multiplexing (Frequency-division multiplexing, FDM).
  • multiple CSI-RS resources can be multiplexed in one PRB through CDM and/or FDM, and the CSI-RS resource configuration information can determine the multiplexing mode and/or Reuse patterns.
  • FDM2 means that 2 CSI-RS can be multiplexed by FDM.
  • 2 FDM multiplexed CSI-RS resources in one PRB occupy adjacent subcarriers or REs, and one of the CSI-RS
  • the subcarriers or REs occupied by resources are determined according to the parameter sideline CSI-RS frequency domain allocation (sl-CSI-RS-FreqAllocation).
  • sl-CSI-RS-FreqAllocation the parameter sideline CSI-RS frequency domain allocation
  • the CSI-RS in the first CSI-RS resource determined according to sl-CSI-RS-FreqAllocation is located at subcarrier index 2
  • the CSI-RS in the second CSI-RS resource is located at subcarrier 3.
  • CDM2 indicates that 2 CSI-RSs can be multiplexed by means of CDM.
  • 2 CDM multiplexed CSI-RS resources in one PRB occupy the same subcarrier or RE, and the occupied subcarrier or RE is determined according to sl-CSI-RS-FreqAllocation.
  • the CSI-RS in the first CSI-RS resource is located at subcarrier indexes 2 and 3
  • the CSI-RS in the second CSI-RS resource is also located at subcarrier 2 and 3.
  • Two CSI-RSs are multiplexed through CDM.
  • the scrambling code identifier included in the CSI-RS resource configuration information is used to generate a CSI-RS sequence.
  • the CSI-RS sequence is generated by the Gold sequence, and the scrambling code is used to determine the initialization of the Gold sequence for generating the CSI-RS sequence.
  • the CSI-RS sequence is generated by:
  • the pseudo-random sequence c(n) is:
  • x 1 (n+31) (x 1 (n+3)+x 1 (n)) mod 2
  • x 2 (n+31) (x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n)) mod 2
  • N C 1600
  • the second m sequence x 2 (n) is expressed as
  • c init is determined according to at least one of the following information:
  • the time slot information associated with the CSI-RS is the time slot information associated with the CSI-RS
  • Time-domain symbol information where the CSI-RS is located
  • n ID is determined by at least one of the following:
  • Source identification information such as the source identification information carried in SCI
  • Destination identification information such as the destination identification information carried in the SCI; may be a receiving terminal identification, a group identification, an intra-group identification of a terminal, and the like.
  • the CSI-RS resource configuration information further includes at least one of the following:
  • the corresponding repetition field in the configuration information of the CSI-RS resource or CSI-RS resource set corresponding to the M CSI-RS takes the first value to indicate that the first terminal device does not use the same spatial domain transmission filter to transmit CSI - RS
  • the CSI-RS resource corresponding to the M CSI-RS or the corresponding repetition field in the configuration information of the CSI-RS resource set takes the second value to instruct the first terminal device to use the same spatial domain transmission filter to transmit CSI -RS.
  • the indication information used to indicate the QCL type is used to indicate the QCL type between the CSI-RS resources in the CSI-RS resource set; or, the indication information used to indicate the QCL type is used to indicate whether it is a QCL -TypeD relationship, its value is true (TRUE) or false (FALSE).
  • the possible values of the indication information used to indicate the QCL type include: ⁇ QCL-TypeA, QCL-TypeB, QCL-TypeC, QCL-TypeD ⁇ , when the value is QCL-TypeD, it means that the CSI-RS All CSI-RS resources in the resource set have a QCL-TypeD relationship.
  • the CSI report value is one of the following: CSI-RS resource indication (CSI-RS Resource Indicator, CRI), CRI and reference signal receiving power (Reference Signal Receiving Power, RSRP) ('cri-RSRP '), CRI and Signal to Interference plus Noise Ratio (Signal to Interference plus Noise Ratio, SINR) ('cri-SINR'), time slot indication information, time slot indication information and RSRP, time slot indication information and SINR, no report or empty ('none').
  • the time slot indication information is used to indicate the time slot where the CSI-RS is located. It should be understood that the amount of CSI reported refers to the amount reported by the second terminal to the first terminal.
  • the CSI-RS resource configuration information includes: at least one first CSI-RS resource set whose parameter repetition (repetition) is set to off, and/or at least one parameter repetition (repetition) set to the first CSI-RS resource set of on Two sets of CSI-RS resources.
  • the first set of CSI-RS resources is used to determine the spatial domain transmission filter
  • the second set of CSI-RS resources is used to determine the spatial domain reception filter.
  • two CSI-RS resource sets are configured in the CSI-RS resource configuration information, the repetition (repetition) field of the first CSI-RS resource set is off, and the repetition field of the second CSI-RS resource set is on.
  • the sending end sends indication information to the receiving end indicating to use the CSI-RS resource set whose repetition (repetition) field is off, the receiving end can assume that the sending end uses a different spatial domain transmission filter to send the CSI-RS.
  • the receiving end can according to The CSI-RS performs measurement and feeds back the preferred CSI-RS resource index and/or measurement results, so that the transmitting end can determine the preferred transmitting side airspace transmission filter; when the repetition (repetition) field is on, the receiving end can assume that the transmission
  • the terminal uses the same spatial domain transmission filter to transmit CSI-RS, therefore, the receiving terminal can use different receiving side spatial domain receiving filters to receive CSI-RS respectively, and measure the CSI-RS, and select the optimal receiving side according to the measurement results
  • the spatial domain receiving filter is used to realize the selection process of the receiving side spatial domain receiving filter.
  • two CSI-RS resource sets are configured in the CSI-RS resource configuration information, and the CSI report amount associated with the CSI-RS resource set is configured, and the CSI report amount associated with the first CSI-RS resource set is configured.
  • the reporting quantity is 'cri-RSRP', and the CSI reporting quantity associated with the second CSI-RS resource set is 'none'.
  • the sending end sends an indication message to the receiving end indicating that the CSI reporting amount is 'cri-RSRP', it means that the sending end will send the CSI-RS resources in the first CSI-RS resource set, and the receiving end can assume that the The terminal uses different spatial domain transmission filters to transmit CSI-RS, therefore, the receiving terminal can perform measurement according to the CSI-RS, and feed back the preferred CSI-RS resource index and/or measurement results, so that the transmitting terminal can determine the preferred transmitting side airspace Sending filter; when the sending end sends indication information to the receiving end indicating that the amount of CSI reporting is 'none', it means that the sending end will send the CSI-RS resources in the second CSI-RS resource set.
  • the receiving end It can be assumed that the transmitting end uses the same spatial domain transmitting filter to transmit CSI-RS. Therefore, the receiving end can use different receiving side spatial domain receiving filters to receive CSI-RS respectively, and measure the CSI-RS, and select the optimal one according to the measurement results.
  • the receiving side spatial domain receiving filter so as to realize the selection process of the receiving side spatial domain receiving filter.
  • the CSI-RS resource configuration information includes one or more of the following parameters:
  • the number of antenna ports for example, indicating that the number of CSI-RS antenna ports is ⁇ 1,2,4,8 ⁇ , etc.;
  • the CSI-RS density is used to indicate the number of REs occupied by the CSI-RS of each antenna port in each PRB. If the density is 2, it means that in each PRB, the CSI-RS of each antenna port occupies 2 REs.
  • the CSI-RS resource configuration information may further include PRB information used to indicate the mapping of the CSI-RS resources. For example, when the density is 0.5, that is, when each antenna port occupies 1 RE in every 2 PRBs, the CSI-RS resource configuration information may also include PRB information that maps a CSI-RS resource in every 2 PRBs, such as an odd number ( or even) PRBs are mapped to CSI-RS resources.
  • the value of the repetition field of the CSI-RS resource set may indicate the use of the CSI-RS resource set, for example, whether it is used to determine a target transmission beam or a target reception beam.
  • the index of the CSI-RS resource set may indicate the use of the CSI-RS resource set, for example, whether it is used to determine a target transmission beam or a target reception beam.
  • the configuration information of the CSI-RS resource set includes index information and repeated fields of the CSI-RS resource set.
  • the corresponding CSI-RS resource set can be determined through the index of the CSI-RS resource set, and further, the value of the repeated field in the CSI-RS resource set can be determined.
  • the transmitting terminal when determining a target transmission beam, may use a CSI-RS resource set with repetition set to off, and when determining a target receiving beam, the transmitting terminal may use a CSI-RS resource set with repetition being on.
  • the resource pool configuration information or the side BWP configuration information includes configuration information of the first CSI-RS resource set and configuration information of the second CSI-RS resource set. Wherein, the repetition of the first CSI-RS resource set is off, and the repetition of the second CSI-RS resource set is on.
  • the first terminal device when it is necessary to determine the target transmission beam, the first terminal device indicates the index of the first CSI-RS resource set, or indicates the use of the first CSI-RS resource set, for example, the first terminal device can use different transmission beams to respectively transmit the For the M1 CSI-RS resources in the first CSI-RS resource set, the second terminal device measures the received CSI-RS resources respectively, and reports or feeds back the CSI according to the measurement results, and the first terminal device according to the second terminal The CSI report or feedback of the device selects the target transmission beam.
  • the first terminal device When determining to receive the beam, the first terminal device indicates the index of the second CSI-RS resource set, or indicates to use the second CSI-RS resource set. For example, the first terminal device uses the same transmission beam to respectively transmit M2 CSI-RS resources in the second CSI-RS resource set, and the second terminal device uses different reception beams to receive and measure the CSI-RS resources , according to the measurement results to select the target receiving beam.
  • the usage of the CSI-RS resource set may be indicated through the configuration of the CSI reporting amount corresponding to the CSI-RS resource set, for example, whether it is used to determine a target transmission beam or a target reception beam. For example, when determining the target transmission beam, the transmitting terminal uses a CSI-RS resource set whose CSI reporting amount is not 'none', and when determining the target receiving beam, the transmitting terminal uses a CSI-RS resource set whose CSI reporting amount is 'none' .
  • the resource pool configuration information or the side row BWP configuration information configures two CSI-RS resource sets, and configures the CSI reporting amount associated with the CSI-RS resource set, and the CSI report amount associated with the first CSI-RS resource set
  • the CSI reporting quantity is 'cri-RSRP'
  • the CSI reporting quantity associated with the second CSI-RS resource set is 'none'.
  • the first terminal device when the first terminal device indicates to the second terminal device that the amount of CSI reporting is 'cri-RSRP', it means that the first terminal device will send the CSI-RS resources in the first CSI-RS resource set.
  • the second terminal device may assume that the first terminal device uses a different transmission beam to transmit CSI-RS resources. Therefore, the second terminal device measures the CSI-RS resources and performs CSI reporting or feedback, so that the first terminal device can be based on CSI reporting or feedback determines the target transmission beam.
  • the first terminal device When the first terminal device indicates to the second terminal device that the amount of CSI reporting is 'none', it means that the first terminal device will send the CSI-RS resources in the second CSI-RS resource set.
  • the second terminal The device may assume that the first terminal device uses the same transmit beam to transmit CSI-RS resources, therefore, the second terminal device may use different receive beams to receive the CSI-RS resources respectively, and measure the CSI-RS resources, and select The target receives the beam.
  • both the first terminal device and the second terminal device can obtain the resource pool configuration information or sideline BWP configuration information. That is, the first terminal device and the second terminal device have the same understanding of the CSI-RS resource configuration information.
  • CSI-RS resources in different time slots have the same frequency domain resources; and/or, CSI-RS resources in different time slots have the same code domain resources; and/or, in different time slots
  • the CSI-RS resources have the same sequence.
  • CSI-RS resources in different time slots have different frequency domain resources, and/or, CSI-RS resources in different time slots have different code domain resources, and/or, in different time slots
  • the CSI-RS resources have different sequences.
  • the first terminal device sends second indication information to the second terminal device
  • the second indication information is used to indicate that the CSI-RS sent by the first terminal device is used to select a spatial domain transmission filter for the first terminal device to transmit sidelink data; or, the second indication information is used to Instructing the CSI-RS sent by the first terminal device to select a spatial receiving filter for the second terminal device to receive sidelink data; or, the second indication information is used to indicate the CSI sent by the first terminal device - RS is used to measure channel state information.
  • the channel state information may include but not limited to at least one of the following:
  • CQI Channel Quality Indicator
  • RI Rank Indication
  • PMI Precoding Matrix Indicator
  • the second indication information is carried by one of the following:
  • PC5-RRC signaling SCI, Media Access Control Control Element (MAC CE), sideline feedback information.
  • SCI SCI
  • MAC CE Media Access Control Control Element
  • the first terminal device when the second indication information is carried by SCI or MACCE, the first terminal device indicates activation of sidelink feedback.
  • the sequence corresponding to one CSI-RS among the M CSI-RS is determined according to at least one of the following information:
  • CSI-RS resource set identifier CSI-RS resource identifier, CRC sequence generated based on SCI, source identifier information, destination identifier information, scrambling code identifier;
  • the SCI is the SCI associated with the CSI-RS
  • the source identification information is used to indicate the identification information of the terminal sending the CSI-RS
  • the destination identification information is used to indicate the identification information of the terminal receiving the CSI-RS
  • the scrambling code The identifier is determined according to the scrambling code identifier information included in the CSI-RS resource configuration information corresponding to the CSI-RS.
  • the source identification information is determined according to the source identification information in the SCI associated with the CSI-RS
  • the destination identification information is determined according to the destination identification information in the SCI associated with the CSI-RS.
  • different frequency domain resources including different CSI-RS resource sets, different PRBs, different PRB
  • the CSI-RS resources are distinguished by at least one of methods such as RE positions), different code domain resources, and different sequences.
  • the CSI-RS resource configuration information includes the following parameters:
  • T_gap indicates the time interval between two adjacent CSI-RSs sent by the first terminal device.
  • the first CSI-RS is located in time slot 4, so the subsequent CSI-RS are located in time slots respectively 6.
  • the penultimate time domain symbol among the time domain symbols available for sideline transmission in each slot is used to transmit CSI-RS, and the data on the penultimate third time domain symbol is the data on the penultimate second symbol.
  • the third last time domain symbol may be an AGC symbol, and the first last time domain symbol and the fourth last time domain symbol may be GP symbols.
  • the CSI-RS resource configuration information also includes the following parameters:
  • the frequency-domain resource indication information of the CSI-RS resource indicates the PRB available for CSI-RS transmission through a bitmap
  • the system includes 30 PRBs, of which PRB4, PRB9, PRB14, PRB19, PRB24, and PRB29 have been allocated for PSFCH transmission, and the frequency domain resource indication information of CSI-RS resources is passed through 30 bits
  • the long bitmap indicates PRBs available for CSI-RS, and as shown in FIG. 22 , a total of 18 PRBs are available for CSI-RS transmission. Since each CSI-RS includes 6 PRBs, 3 CSI-RSs can be carried in a frequency division manner. Further, according to the parameter sl-CSI-RS-FreqAllocation, the REs or subcarriers used to bear the CSI-RS in the PRB of each CSI-RS can be determined.
  • the CSI-RS resource configuration information also includes the following parameters:
  • the CSI-RS resource configuration information is used to configure two CSI-RS resource sets, each CSI-RS resource set includes multiple CSI-RS resources, and specifically determine the configuration parameters of the CSI-RS resources.
  • Example 1 further, the CSI-RS resource configuration information also includes the following configuration parameters:
  • Repetition set this parameter to off in the CSI-RS resource set marked as 0, and set this parameter to on in the CSI-RS resource set marked as 1.
  • each CSI-RS resource set is also configured with its associated CSI report configuration identifier (CSI-ReportConfigId): for a CSI-RS resource set with an identifier of 0, its associated CSI-ReportConfigId is 'cir- RSRP'; for the CSI-RS resource set identified as 1, the CSI-ReportConfigId associated with it is 'none'.
  • CSI-ReportConfigId CSI report configuration identifier
  • the first terminal device uses the spatial domain transmission filter to transmit M CSI-RSs to the second terminal device, and one CSI-RS among the M CSI-RSs occupies one time slot available for the side
  • the second-to-last time-domain symbol and the third-to-last time-domain symbol in the time-domain symbols for row transmission that is, by configuring the second-to-last time-domain symbol and the third-to-last time-domain symbol in the slot occupied by the CSI-RS
  • the field symbols make CSI-RS and PSCCH or PSSCH not sent at the same time, which optimizes the transmission efficiency of CSI-RS.
  • the second terminal device may determine the slot positions of the subsequent multiple CSI-RS based on the slot where the first CSI-RS is located, so that the corresponding spatial domain receiving filter may be determined and received in advance.
  • the first terminal device only needs to indicate the resource position occupied by the first CSI-RS to determine the resource positions occupied by all CSI-RS.
  • the CSI-RS resources and PSFCH resources Can be reused to improve resource utilization.
  • CSI-RS resources and PSFCH resources can be multiplexed in the same slot.
  • PSFCH resources are not included in the slots of the CSI-RS.
  • Fig. 23 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application.
  • the terminal device 300 is a first terminal device.
  • the terminal device 300 includes:
  • a communication unit 310 configured to use a spatial domain transmission filter to transmit M CSI-RSs to a second terminal device;
  • one CSI-RS among the M CSI-RS occupies the penultimate time domain symbol and the penultimate time domain symbol among the time domain symbols available for sidelink transmission in a slot, and the M CSI-RS -
  • the RS is used to select a target airspace transmit filter, or the M CSI-RS are used to select a target airspace receive filter, and M is a positive integer.
  • the data on the third-to-last time-domain symbol is a repetition of the data on the second-to-last time-domain symbol, or, the data on the third-to-last time-domain symbol is the same as the second-to-last time-domain symbol
  • the data on each time domain symbol is the same.
  • a time domain symbol before the penultimate time domain symbol is a guard interval GP symbol, and/or, a time domain symbol after the penultimate time domain symbol is a GP symbol.
  • the terminal device 300 further includes: a processing unit 320, wherein the processing unit 320 is configured to determine the CSI-RS resource or CSI-RS corresponding to the M CSI-RS according to the CSI-RS resource configuration information Collection of resources.
  • the CSI-RS resource configuration information includes at least one of the following:
  • the cycle of CSI-RS resources, the time slot offset of CSI-RS resources, the minimum time interval, the time interval between two adjacent CSI-RSs, the indication information of frequency domain resources that can be used to transmit CSI-RS, each CSI-RS The frequency domain resources included in RS resources, the minimum frequency domain resource size included in each CSI-RS resource, the interval between PRBs of adjacent physical resource blocks that map CSI-RS, and the indication of the frequency domain position of CSI-RS resources within a PRB Information, CSI-RS density, indication information used to indicate the number of CSI-RS resources multiplexed by way of code division multiplexing, code division multiplexing type, scrambling code identifier.
  • the time slot offset of the CSI-RS resource represents the time slot offset of the first time slot including the CSI-RS relative to the first time domain position, wherein the first time domain position includes The first slot in SFN#0 or the first slot in DFN#0.
  • the minimum time interval represents a minimum time interval between a CSI-RS and its associated first indication information, where the first indication information is used to instruct the first terminal device to send a CSI-RS.
  • the minimum time interval is equal to 0.
  • the time interval between two adjacent CSI-RSs is represented by the number of time slots, or the time interval between two adjacent CSI-RSs is represented by the number of periods of CSI-RS resources.
  • the time interval between two adjacent CSI-RSs is the time interval of one CSI-RS resource. cycle.
  • the frequency-domain resource indication information that can be used to transmit CSI-RS resources is used to determine information of PRBs that can be used to transmit CSI-RS.
  • the information of the PRB that can be used to transmit the CSI-RS is indicated by a bitmap, wherein each bit in the bitmap corresponds to a PRB, and the length of the bitmap is according to at least one of the following Determine: the number of PRBs included in the sidelink carrier, the number of PRBs included in the sidelink bandwidth part BWP, and the number of PRBs included in the resource pool.
  • the information of the PRBs that can be used to transmit the CSI-RS is determined by the starting frequency domain position and frequency domain length that can be used to transmit the CSI-RS.
  • the frequency domain resources used to transmit the physical sidelink feedback channel PSFCH and/or the sidelink positioning reference signal included in the frequency domain resources determined based on the starting frequency domain position and the frequency domain length are not used for transmission CSI-RS.
  • the interval between adjacent PRBs where the CSI-RS is mapped is used to determine the interval between two adjacent PRBs among the multiple PRBs mapped by one CSI-RS, where the interval between the two adjacent PRBs is The interval of is represented by the number of PRBs available for transmission of CSI-RS.
  • the CSI-RS resource configuration information does not include the interval between adjacent PRBs to which CSI-RSs are mapped, one CSI-RS occupies adjacent PRBs that can be used for CSI-RS transmission.
  • the indication information of the frequency domain position of the CSI-RS resource in one PRB is used to indicate the frequency domain position of the CSI-RS resource in one PRB.
  • the M CSI-RS sent by the first terminal device occupy the same REs in the PRB.
  • the code division multiplexing type includes: code division multiplexing CDM, or CDM and frequency division multiplexing FDM.
  • the scrambling code identifier is used to generate a CSI-RS sequence.
  • the CSI-RS resource configuration information further includes at least one of the following:
  • the index of the CSI-RS resource corresponding to the M CSI-RS, the index of the CSI-RS resource set corresponding to the M CSI-RS, the CSI-RS resource set corresponding to the M CSI-RS and the channel state information CSI report The corresponding relationship of quantity, the quantity of CSI-RS resources included in the CSI-RS resource set corresponding to the M CSI-RS, is used to indicate the indication information of the quasi-co-site QCL type, and the second terminal device sends the first The number of CSI-RS resources reported or fed back by the terminal device, the value of the corresponding repeated field in the configuration information of the CSI-RS resources corresponding to the M CSI-RS or the CSI-RS resource set;
  • the corresponding repetition field in the configuration information of the CSI-RS resource or CSI-RS resource set corresponding to the M CSI-RS takes the first value to indicate that the first terminal device does not use the same spatial domain transmission filter to transmit CSI - RS
  • the CSI-RS resource corresponding to the M CSI-RS or the corresponding repetition field in the configuration information of the CSI-RS resource set takes the second value to instruct the first terminal device to use the same spatial domain transmission filter to transmit CSI -RS.
  • CSI-RS resources in different time slots have the same frequency domain resources; and/or, CSI-RS resources in different time slots have the same code domain resources; and/or, in different time slots
  • the CSI-RS resources have the same sequence.
  • CSI-RS resources in different time slots have different frequency domain resources, and/or, CSI-RS resources in different time slots have different code domain resources, and/or, in different time slots
  • the CSI-RS resources have different sequences.
  • the corresponding repetition in the configuration information of the CSI-RS resource or CSI-RS resource set corresponding to the M CSI-RS takes a first value, and the first value is used to indicate that the first terminal device does not use the same spatial domain transmission filter to transmit CSI-RS;
  • the corresponding repetition field in the configuration information of the CSI-RS resource or CSI-RS resource set corresponding to the M CSI-RS takes the second value,
  • the second value is used to instruct the first terminal device to use the same spatial domain transmission filter to transmit the CSI-RS.
  • the communication unit 310 is further configured to send second indication information to the second terminal device
  • the second indication information is used to indicate that the CSI-RS sent by the first terminal device is used to select a spatial domain transmission filter for the first terminal device to transmit sidelink data; or, the second indication information is used to Instructing the CSI-RS sent by the first terminal device to select a spatial receiving filter for the second terminal device to receive sidelink data; or, the second indication information is used to indicate the CSI sent by the first terminal device - RS is used to measure channel state information.
  • the communication unit 310 is further configured to send the first lateral configuration information to the second terminal device;
  • the first side row configuration information includes at least one of the following:
  • the index of the CSI-RS resource corresponding to the M CSI-RS, the index of the CSI-RS resource set corresponding to the M CSI-RS, the CSI-RS resource set corresponding to the M CSI-RS and the channel state information CSI report The corresponding relationship of the amount, the number of CSI-RS resources included in the CSI-RS resource set corresponding to the M CSI-RS, the value of the M, the indication information used to indicate the QCL type, the period of the CSI-RS resource, The time slot offset of the CSI-RS resource, the minimum time interval, the time interval between two adjacent CSI-RSs among the M CSI-RSs, used to indicate the frequency domain occupied by the CSI-RSs among the M CSI-RSs Resource indication information, frequency domain resources included in each CSI-RS resource corresponding to the M CSI-RS, minimum frequency domain resource size included in each CSI-RS resource corresponding to the M CSI-RS, mapping CSI-RS The interval between adjacent PRBs of the RS is used to indicate the
  • the corresponding repetition field in the configuration information of the CSI-RS resource or CSI-RS resource set corresponding to the M CSI-RS takes the first value to indicate that the first terminal device does not use the same spatial domain transmission filter to transmit CSI - RS
  • the CSI-RS resource corresponding to the M CSI-RS or the corresponding repetition field in the configuration information of the CSI-RS resource set takes the second value to instruct the first terminal device to use the same spatial domain transmission filter to transmit CSI -RS.
  • the CSI reporting amount includes at least one of the following:
  • the slot indication information is used to indicate the time slot where the CSI-RS is located.
  • the sequence corresponding to one CSI-RS among the M CSI-RS is determined according to at least one of the following information:
  • CSI-RS resource set identifier CSI-RS resource identifier, cyclic redundancy check CRC sequence generated based on SCI, source identification information, destination identification information, scrambling code identification;
  • the SCI is the SCI associated with the CSI-RS
  • the source identification information is used to indicate the identification information of the terminal sending the CSI-RS
  • the destination identification information is used to indicate the identification information of the terminal receiving the CSI-RS
  • the scrambling code The identifier is determined according to the scrambling code identifier information included in the CSI-RS resource configuration information corresponding to the CSI-RS.
  • the source identification information is determined according to the source identification information in the SCI associated with the CSI-RS
  • the destination identification information is determined according to the destination identification information in the SCI associated with the CSI-RS.
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system-on-chip.
  • the aforementioned processing unit may be one or more processors.
  • terminal device 300 may correspond to the first terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 300 are respectively in order to realize the The corresponding process of the first terminal device in the method 200 is shown, and for the sake of brevity, details are not repeated here.
  • Fig. 24 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application.
  • the terminal device 400 is a second terminal device.
  • the terminal device 400 includes:
  • a communication unit 410 configured to receive M CSI-RSs transmitted by the first terminal device using a spatial domain transmission filter
  • one CSI-RS among the M CSI-RS occupies the penultimate time domain symbol and the penultimate time domain symbol among the time domain symbols available for sidelink transmission in a slot, and the M CSI-RS -
  • the RS is used to select a target airspace transmit filter, or the M CSI-RS are used to select a target airspace receive filter, and M is a positive integer.
  • the data on the third-to-last time-domain symbol is a repetition of the data on the second-to-last time-domain symbol, or, the data on the third-to-last time-domain symbol is the same as the second-to-last time-domain symbol
  • the data on each time domain symbol is the same.
  • a time domain symbol before the penultimate time domain symbol is a guard interval GP symbol, and/or, a time domain symbol after the penultimate time domain symbol is a GP symbol.
  • the CSI-RS resources or CSI-RS resource sets corresponding to the M CSI-RS are determined based on CSI-RS resource configuration information.
  • the CSI-RS resource configuration information includes at least one of the following:
  • the cycle of CSI-RS resources, the time slot offset of CSI-RS resources, the minimum time interval, the time interval between two adjacent CSI-RSs, the indication information of frequency domain resources that can be used to transmit CSI-RS, each CSI-RS The frequency domain resources included in RS resources, the minimum frequency domain resource size included in each CSI-RS resource, the interval between PRBs of adjacent physical resource blocks that map CSI-RS, and the indication of the frequency domain position of CSI-RS resources within a PRB Information, CSI-RS density, indication information used to indicate the number of CSI-RS resources multiplexed by way of code division multiplexing, code division multiplexing type, scrambling code identifier.
  • the time slot offset of the CSI-RS resource represents the time slot offset of the first time slot including the CSI-RS relative to the first time domain position, wherein the first time domain position includes The first slot in SFN#0 or the first slot in DFN#0.
  • the minimum time interval represents a minimum time interval between a CSI-RS and its associated first indication information, where the first indication information is used to instruct the first terminal device to send a CSI-RS.
  • the minimum time interval is equal to 0.
  • the time interval between two adjacent CSI-RSs is represented by the number of time slots, or the time interval between two adjacent CSI-RSs is represented by the number of periods of CSI-RS resources.
  • the time interval between two adjacent CSI-RSs is the time interval of one CSI-RS resource. cycle.
  • the frequency-domain resource indication information that can be used to transmit CSI-RS resources is used to determine information of PRBs that can be used to transmit CSI-RS.
  • the information of the PRB that can be used to transmit the CSI-RS is indicated by a bitmap, wherein each bit in the bitmap corresponds to a PRB, and the length of the bitmap is according to at least one of the following Determine: the number of PRBs included in the sidelink carrier, the number of PRBs included in the sidelink bandwidth part BWP, and the number of PRBs included in the resource pool.
  • the information of the PRBs that can be used to transmit the CSI-RS is determined by the starting frequency domain position and frequency domain length that can be used to transmit the CSI-RS.
  • the frequency domain resources used to transmit the physical sidelink feedback channel PSFCH and/or the sidelink positioning reference signal included in the frequency domain resources determined based on the starting frequency domain position and the frequency domain length are not used for transmission CSI-RS.
  • the interval between adjacent PRBs where the CSI-RS is mapped is used to determine the interval between two adjacent PRBs among the multiple PRBs mapped by one CSI-RS, where the interval between the two adjacent PRBs is The interval of is represented by the number of PRBs available for transmission of CSI-RS.
  • the CSI-RS resource configuration information does not include the interval between adjacent PRBs to which CSI-RSs are mapped, one CSI-RS occupies adjacent PRBs that can be used for CSI-RS transmission.
  • the indication information of the frequency domain position of the CSI-RS resource in one PRB is used to indicate the frequency domain position of the CSI-RS resource in one PRB.
  • the M CSI-RS sent by the first terminal device occupy the same REs in the PRB.
  • the code division multiplexing type includes: code division multiplexing CDM, or CDM and frequency division multiplexing FDM.
  • the scrambling code identifier is used to generate a CSI-RS sequence.
  • the CSI-RS resource configuration information further includes at least one of the following:
  • the index of the CSI-RS resource corresponding to the M CSI-RS, the index of the CSI-RS resource set corresponding to the M CSI-RS, the CSI-RS resource set corresponding to the M CSI-RS and the channel state information CSI report The corresponding relationship of quantity, the quantity of CSI-RS resources included in the CSI-RS resource set corresponding to the M CSI-RS, is used to indicate the indication information of the quasi-co-site QCL type, and the second terminal device sends the first The number of CSI-RS resources reported or fed back by the terminal device, the value of the corresponding repeated field in the configuration information of the CSI-RS resources corresponding to the M CSI-RS or the CSI-RS resource set;
  • the corresponding repetition field in the configuration information of the CSI-RS resource or CSI-RS resource set corresponding to the M CSI-RS takes the first value to indicate that the first terminal device does not use the same spatial domain transmission filter to transmit CSI - RS
  • the CSI-RS resource corresponding to the M CSI-RS or the corresponding repetition field in the configuration information of the CSI-RS resource set takes the second value to instruct the first terminal device to use the same spatial domain transmission filter to transmit CSI -RS.
  • the CSI-RS resources in different time slots have the same frequency domain resources; and/or, the CSI-RS resources in different time slots have the same code domain resources; and/or, in different time slots
  • the CSI-RS resources have the same sequence.
  • CSI-RS resources in different time slots have different frequency domain resources, and/or, CSI-RS resources in different time slots have different code domain resources, and/or, in different time slots
  • the CSI-RS resources have different sequences.
  • the corresponding repetition in the configuration information of the CSI-RS resource or CSI-RS resource set corresponding to the M CSI-RS takes a first value, and the first value is used to indicate that the first terminal device does not use the same spatial domain transmission filter to transmit CSI-RS;
  • the corresponding repetition field in the configuration information of the CSI-RS resource or CSI-RS resource set corresponding to the M CSI-RS takes the second value,
  • the second value is used to instruct the first terminal device to use the same spatial domain transmission filter to transmit the CSI-RS.
  • the communication unit 410 is further configured to receive second indication information sent by the first terminal device
  • the second indication information is used to indicate that the CSI-RS sent by the first terminal device is used to select a spatial domain transmission filter for the first terminal device to transmit sidelink data; or, the second indication information is used to Instructing the CSI-RS sent by the first terminal device to select a spatial receiving filter for the second terminal device to receive sidelink data; or, the second indication information is used to indicate the CSI sent by the first terminal device - RS is used to measure channel state information.
  • the communication unit 410 is also configured to receive the first side row configuration information sent by the first terminal device;
  • the first side row configuration information includes at least one of the following:
  • the index of the CSI-RS resource corresponding to the M CSI-RS, the index of the CSI-RS resource set corresponding to the M CSI-RS, the CSI-RS resource set corresponding to the M CSI-RS and the channel state information CSI report The corresponding relationship of the amount, the number of CSI-RS resources included in the CSI-RS resource set corresponding to the M CSI-RS, the value of the M, the indication information used to indicate the QCL type, the period of the CSI-RS resource, The time slot offset of the CSI-RS resource, the minimum time interval, the time interval between two adjacent CSI-RSs among the M CSI-RSs, used to indicate the frequency domain occupied by the CSI-RSs among the M CSI-RSs Resource indication information, frequency domain resources included in each CSI-RS resource corresponding to the M CSI-RS, minimum frequency domain resource size included in each CSI-RS resource corresponding to the M CSI-RS, mapping CSI-RS The interval between adjacent PRBs of the RS is used to indicate the
  • the corresponding repetition field in the configuration information of the CSI-RS resource or CSI-RS resource set corresponding to the M CSI-RS takes the first value to indicate that the first terminal device does not use the same spatial domain transmission filter to transmit CSI - RS
  • the CSI-RS resource corresponding to the M CSI-RS or the corresponding repetition field in the configuration information of the CSI-RS resource set takes the second value to instruct the first terminal device to use the same spatial domain transmission filter to transmit CSI -RS.
  • the CSI reporting amount includes at least one of the following: CSI-RS resource indication CRI, CRI and reference signal received power RSRP, CRI and signal-to-interference and noise ratio SINR, time slot indication information, time slot indication information and RSRP , time slot indication information and SINR are not reported; wherein, the time slot indication information is used to indicate the time slot where the CSI-RS is located.
  • the sequence corresponding to one CSI-RS among the M CSI-RS is determined according to at least one of the following information:
  • CSI-RS resource set identifier CSI-RS resource identifier, cyclic redundancy check CRC sequence generated based on SCI, source identification information, destination identification information, scrambling code identification;
  • the SCI is the SCI associated with the CSI-RS
  • the source identification information is used to indicate the identification information of the terminal sending the CSI-RS
  • the destination identification information is used to indicate the identification information of the terminal receiving the CSI-RS
  • the scrambling code The identifier is determined according to the scrambling code identifier information included in the CSI-RS resource configuration information corresponding to the CSI-RS.
  • the source identification information is determined according to the source identification information in the SCI associated with the CSI-RS
  • the destination identification information is determined according to the destination identification information in the SCI associated with the CSI-RS.
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system-on-chip.
  • terminal device 400 may correspond to the second terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 400 are respectively in order to realize the The corresponding process of the second terminal device in the method 200 is shown, and for the sake of brevity, details are not repeated here.
  • FIG. 25 is a schematic structural diagram of a communication device 500 provided by an embodiment of the present application.
  • the communication device 500 shown in FIG. 25 includes a processor 510, and the processor 510 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
  • the communication device 500 may further include a memory 520 .
  • the processor 510 can invoke and run a computer program from the memory 520, so as to implement the method in the embodiment of the present application.
  • the memory 520 may be an independent device independent of the processor 510 , or may be integrated in the processor 510 .
  • the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, specifically, to send information or data to other devices, or Receive messages or data from other devices.
  • the transceiver 530 may include a transmitter and a receiver.
  • the transceiver 530 may further include antennas, and the number of antennas may be one or more.
  • the communication device 500 may specifically be the terminal device of the embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the first terminal device in each method of the embodiment of the present application. For brevity, in This will not be repeated here.
  • the communication device 500 may specifically be the terminal device in the embodiment of the present application, and the communication device 500 may implement the corresponding process implemented by the second terminal device in each method of the embodiment of the present application. For the sake of brevity, in This will not be repeated here.
  • Fig. 26 is a schematic structural diagram of a device according to an embodiment of the present application.
  • the apparatus 600 shown in FIG. 26 includes a processor 610, and the processor 610 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
  • the device 600 may further include a memory 620 .
  • the processor 610 can invoke and run a computer program from the memory 620, so as to implement the method in the embodiment of the present application.
  • the memory 620 may be an independent device independent of the processor 610 , or may be integrated in the processor 610 .
  • the device 600 may further include an input interface 630 .
  • the processor 610 can control the input interface 630 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.
  • the device 600 may further include an output interface 640 .
  • the processor 610 can control the output interface 640 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.
  • the device can be applied to the terminal device in the embodiment of the present application, and the device can realize the corresponding process implemented by the first terminal device in each method of the embodiment of the present application, for the sake of brevity, no longer repeat.
  • the device can be applied to the terminal device in the embodiment of the present application, and the device can realize the corresponding process implemented by the second terminal device in each method of the embodiment of the present application, for the sake of brevity, no longer repeat.
  • the device mentioned in the embodiment of the present application may also be a chip.
  • it may be a system-on-a-chip, a system-on-a-chip, a system-on-a-chip, or a system-on-a-chip.
  • FIG. 27 is a schematic block diagram of a communication system 700 provided by an embodiment of the present application. As shown in FIG. 27 , the communication system 700 includes a first terminal device 710 and a second terminal device 720 .
  • the first terminal device 710 can be used to realize the corresponding functions realized by the first terminal device in the above method
  • the second terminal device 720 can be used to realize the corresponding functions realized by the second terminal device in the above method , for the sake of brevity, it is not repeated here.
  • the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a 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 Program logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • 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, or the like.
  • the steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash.
  • the volatile memory can be Random Access Memory (RAM), which acts as external cache memory.
  • RAM Static Random Access Memory
  • SRAM Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
  • 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
  • Synchlink DRAM, SLDRAM Direct Memory Bus Random Access Memory
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may 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), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the first terminal device in the methods of the embodiments of the present application, in order It is concise and will not be repeated here.
  • the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the second terminal device in the methods of the embodiments of the present application, in order It is concise and will not be repeated here.
  • the embodiment of the present application also provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the first terminal device in the methods of the embodiments of the present application.
  • the computer program instructions cause the computer to execute the corresponding processes implemented by the first terminal device in the methods of the embodiments of the present application.
  • the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the second terminal device in the methods of the embodiments of the present application.
  • the computer program instructions cause the computer to execute the corresponding processes implemented by the second terminal device in the methods of the embodiments of the present application.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the terminal device in the embodiment of the present application.
  • the computer program executes the corresponding method implemented by the first terminal device in each method of the embodiment of the present application. For the sake of brevity, the process will not be repeated here.
  • the computer program can be applied to the terminal device in the embodiment of the present application.
  • the computer program executes the corresponding method implemented by the second terminal device in each method of the embodiment of the present application. For the sake of brevity, the process will not be repeated here.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of 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 may be distributed to multiple network units. Part 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 may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function 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 prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

Selon des modes de réalisation, la présente demande concerne un procédé de communication sans fil et un dispositif terminal. Une ressource CSI-RS destinée à transmettre un CSI-RS est configurée, et le CSI-RS est transmis sur la base de la ressource CSI-RS configurée, de sorte qu'un filtre de transmission de domaine spatial optimal ou un filtre de réception de domaine spatial optimal peut être sélectionné sur la base du CSI-RS envoyé. Le procédé de communication sans fil comprend les étapes suivantes : un premier dispositif terminal envoie M CSI-RS à un second dispositif terminal à l'aide d'un filtre de transmission de domaine spatial, l'un des M CSI-RS occupant le pénultième symbole de domaine temporel et l'antépénultième symbole de domaine temporel parmi des symboles de domaine temporel qui peuvent être utilisés pour une transmission de liaison latérale et se trouvant dans un intervalle ; et les M CSI-RS étant utilisés pour sélectionner un filtre de transmission de domaine spatial cible, ou les M CSI-RS étant utilisés pour sélectionner un filtre de réception de domaine spatial cible, M étant un nombre entier positif.
PCT/CN2021/116444 2021-09-03 2021-09-03 Procédé de communication sans fil et dispositif terminal WO2023028987A1 (fr)

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PCT/CN2021/116444 WO2023028987A1 (fr) 2021-09-03 2021-09-03 Procédé de communication sans fil et dispositif terminal

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CN111181710A (zh) * 2019-12-31 2020-05-19 展讯通信（上海）有限公司 通信方法及装置
US20200374858A1 (en) * 2019-05-24 2020-11-26 Qualcomm Incorporated Sidelink communication across frequency bands
WO2021044382A1 (fr) * 2019-09-05 2021-03-11 Lenovo (Singapore) Pte. Ltd. Détermination d'un panneau d'antenne pour une transmission de liaison latérale
US20210105055A1 (en) * 2019-10-03 2021-04-08 Hyukjin Chae Sidelink channel state information acquisition
WO2021062978A1 (fr) * 2019-09-30 2021-04-08 Oppo广东移动通信有限公司 Procédé et dispositif de transmission de données
CN112713974A (zh) * 2019-10-25 2021-04-27 成都华为技术有限公司 资源映射方法、设备及存储介质
WO2021101196A1 (fr) * 2019-11-22 2021-05-27 삼성전자 주식회사 Appareil et procédé d'actionnement de faisceau de liaison latérale dans un système de communication sans fil

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Publication number Priority date Publication date Assignee Title
WO2020056180A1 (fr) * 2018-09-12 2020-03-19 Intel Corporation Dispositif et procédé de déclenchement et de configuration de signal de référence de sondage dans un réseau new radio
US20200374858A1 (en) * 2019-05-24 2020-11-26 Qualcomm Incorporated Sidelink communication across frequency bands
WO2021044382A1 (fr) * 2019-09-05 2021-03-11 Lenovo (Singapore) Pte. Ltd. Détermination d'un panneau d'antenne pour une transmission de liaison latérale
WO2021062978A1 (fr) * 2019-09-30 2021-04-08 Oppo广东移动通信有限公司 Procédé et dispositif de transmission de données
US20210105055A1 (en) * 2019-10-03 2021-04-08 Hyukjin Chae Sidelink channel state information acquisition
CN112713974A (zh) * 2019-10-25 2021-04-27 成都华为技术有限公司 资源映射方法、设备及存储介质
WO2021101196A1 (fr) * 2019-11-22 2021-05-27 삼성전자 주식회사 Appareil et procédé d'actionnement de faisceau de liaison latérale dans un système de communication sans fil
CN111181710A (zh) * 2019-12-31 2020-05-19 展讯通信（上海）有限公司 通信方法及装置

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