WO2023019464A1 - 无线通信方法、第一终端设备和第二终端设备 - Google Patents
无线通信方法、第一终端设备和第二终端设备 Download PDFInfo
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0452—Multi-user MIMO systems
Definitions
- the embodiments of the present application relate to the communication field, and more specifically, to a wireless communication method, a first terminal device, and a second terminal device.
- New air interface (New Radio, NR)/fifth-generation mobile communication technology (5-Generation, 5G) system design goals include large-bandwidth communications in high-frequency bands, such as frequency bands above 6GHz.
- NR New Radio
- 5G fifth-generation mobile communication technology
- a large-scale antenna array Massive MIMO
- the entire cell is covered by multi-beam, that is, each beam covers a small range, and the effect of multiple beams covering the entire cell is achieved by sweeping in time.
- the network device may use the beam indication information to assist the terminal side in determining information about the sending beam on the network side or information about the receiving beam corresponding to the terminal side.
- the receiving terminal since both the receiving terminal and the transmitting terminal perform sidelink communication based on multi-beams, at this time, the receiving terminal The receiving beam of the terminal may not be aligned with the transmitting beam of the transmitting terminal, which reduces the signal gain and transmission performance.
- NR New Radio
- SL sidelink
- An embodiment of the present application provides a wireless communication method, a first terminal device, and a second terminal device, which can ensure that the target airspace receiving filter used by the first terminal device is aligned with the airspace transmitting filter used by the second terminal device, and then It can realize the maximization of signal gain and improve transmission performance.
- the present application provides a wireless communication method, including:
- a target spatial domain receiving filter for the first terminal device Based on the measurement results of the multiple CSI-RSs, among the multiple spatial domain receiving filters, determine a target spatial domain receiving filter for the first terminal device to receive sidelink data.
- the present application provides a wireless communication method, including:
- the multiple CSI-RSs are used by the first terminal device to determine a target spatial receiving filter for receiving sidelink data from a plurality of spatial receiving filters.
- the present application provides a first terminal device configured to execute the method in the above first aspect or its various implementation manners.
- the first terminal device includes a functional module configured to execute the method in the foregoing first aspect or each implementation manner thereof.
- the first terminal device may include a processing unit, where the processing unit is configured to perform functions related to information processing.
- the processing unit may be a processor.
- the first terminal device may include a sending unit and/or a receiving unit.
- the sending unit is used to perform functions related to sending, and the receiving unit is used to perform functions related to receiving.
- the sending unit may be a transmitter or transmitter, and the receiving unit may be a receiver or receiver.
- the first terminal device is a communication chip, the sending unit may be an input circuit or interface of the communication chip, and the sending unit may be an output circuit or interface of the communication chip.
- the present application provides a second terminal device, configured to execute the method in the second aspect or various implementations thereof.
- the second terminal device includes a function module configured to execute the method in the second aspect or each implementation manner thereof.
- the second terminal device may include a processing unit configured to perform functions related to information processing.
- the processing unit may be a processor.
- the second terminal device may include a sending unit and/or a receiving unit.
- the sending unit is used to perform functions related to sending, and the receiving unit is used to perform functions related to receiving.
- the sending unit may be a transmitter or transmitter, and the receiving unit may be a receiver or receiver.
- the second terminal device is a communication chip, the receiving unit may be an input circuit or interface of the communication chip, and the sending unit may be an output circuit or interface of the communication chip.
- the present application provides a first 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, so as to execute the method in the above first aspect or each implementation manner thereof.
- processors there are one or more processors, and one or more memories.
- the memory may be integrated with the processor, or the memory may be separated from the processor.
- the first terminal device further includes a transmitter (transmitter) and a receiver (receiver).
- the present application provides a second 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, so as to execute the method in the second aspect or each implementation manner thereof.
- processors there are one or more processors, and one or more memories.
- the memory may be integrated with the processor, or the memory may be separated from the processor.
- the second terminal device further includes a transmitter (transmitter) and a receiver (receiver).
- the present application provides a chip configured to implement any one of the above-mentioned first aspect to the second aspect or a method in each implementation manner thereof.
- the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes any one of the above-mentioned first to second aspects or various implementations thereof method in .
- the present application provides a computer-readable storage medium for storing a computer program, and the computer program enables the computer to execute any one of the above-mentioned first to second aspects or the method in each implementation manner thereof .
- the present application provides a computer program product, including computer program instructions, the computer program instructions cause a computer to execute any one of the above first to second aspects or the method in each implementation manner.
- the present application provides a computer program, which, when run on a computer, causes the computer to execute any one of the above-mentioned first to second aspects or the method in each implementation manner.
- the first terminal device can determine the target spatial receiving filter for the first terminal device to receive sidelink data from among the multiple spatial receiving filters Based on this, when the first terminal device receives the sidelink data sent by the second terminal device using the airspace transmit filter corresponding to the target airspace receive filter based on the target airspace receive filter, it can ensure that the The target spatial domain receive filter is aligned with the spatial domain transmit filter used by the second terminal device, thereby maximizing signal gain and improving transmission performance.
- FIGS 1 to 7 are examples of scenarios provided in this application.
- FIG. 8 is an example of a time slot structure not including a PSFCH channel provided by an embodiment of the present application.
- FIG. 9 is an example of a time slot structure including a PSFCH channel provided by an embodiment of the present application.
- Fig. 10 is a schematic diagram of a non-analog beam provided by an embodiment of the present application.
- Fig. 11 is a schematic diagram of an analog beam provided by an embodiment of the present application.
- Fig. 12 is a schematic flowchart of a method for configuring a TCI state of a PDSCH provided by an embodiment of the present application.
- Fig. 13 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.
- Fig. 14 is a schematic diagram of receiving multiple CSI-RSs based on the first indication information provided by the embodiment of the present application.
- FIG. 15 is a schematic diagram of a first terminal device receiving multiple CSI-RSs based on second indication information provided by an embodiment of the present application.
- FIG. 16 is a schematic diagram of a first terminal device receiving multiple CSI-RSs on the multiple transmission resources by using multiple spatial domain receiving filters according to an embodiment of the present application.
- Fig. 17 is another schematic flowchart of the wireless communication method provided by the embodiment of the present application.
- Fig. 18 is a schematic block diagram of a first terminal device provided by an embodiment of the present application.
- Fig. 19 is a schematic block diagram of a second terminal device provided by an embodiment of the present application.
- Fig. 20 is a schematic block diagram of a communication device provided by an embodiment of the present application.
- Fig. 21 is a schematic block diagram of a chip provided by an embodiment of the present application.
- the embodiments of the present application may be applicable to any terminal device-to-terminal device communication framework.
- V2V Vehicle to Vehicle
- V2X Vehicle to Everything
- D2D Device to Device
- the terminal device in this application may be any device or device configured with a physical layer and a media access control layer, and the terminal device may also be called an access terminal.
- user equipment User Equipment, UE
- subscriber unit subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.
- the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a wireless Handheld devices with communication capabilities, computing devices or other linear processing devices connected to wireless modems, in-vehicle devices, wearable devices, etc.
- SIP Session Initiation Protocol
- WLL Wireless Local Loop
- PDA Personal Digital Assistant
- the embodiment of the present invention is described by taking a vehicle-mounted terminal as an example, but it is not limited thereto.
- 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 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) network deployment scenario.
- Carrier Aggregation, CA Carrier Aggregation
- DC Dual Connectivity
- SA independent network deployment scenario
- the communication system of the present application can be applied to unlicensed spectrum, wherein the unlicensed spectrum can also be considered as shared spectrum; or, the communication system of the present application can also be applied to licensed spectrum, wherein the licensed spectrum can also be considered as unlicensed spectrum 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
- terminal equipment 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 on aircraft, balloons and satellites, etc.) .
- the terminal device can be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal device, an industrial Wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, transportation Wireless terminal devices in transportation safety, wireless terminal devices in smart city or wireless terminal devices in smart home, etc.
- a virtual reality (Virtual Reality, VR) terminal device an augmented reality (Augmented Reality, AR) terminal device
- an industrial Wireless terminal equipment in industrial control wireless terminal equipment in self-driving
- wireless terminal equipment in remote medical wireless terminal equipment in smart grid
- transportation Wireless terminal devices in transportation safety wireless terminal devices in smart city or wireless terminal devices in smart home, etc.
- 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 can be a device used to communicate with the mobile device, and the network device can be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, or It is 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 network in a vehicle-mounted device, a wearable device, and an NR network Equipment or a base station (gNB) or network equipment in a future evolved PLMN network or network equipment in an NTN network.
- Access Point Access Point
- BTS Base Transceiver Station
- NodeB, NB base station
- Evolutional Node B, eNB or eNodeB evolved base station
- gNB NR network Equipment or a 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 the 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 base station)
- the corresponding cell, the cell can belong to the macro base station, or the base station corresponding to the small cell (Small cell), where the small cell can include: Metro cell, Micro 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 "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.
- predefinition 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). Do limited. For example, pre-defined may refer to defined in the protocol.
- the "protocol” may refer to a standard protocol in the communication field, for example, it may include LTE protocol, NR protocol and related protocols applied in future communication systems, which is not limited in this application.
- side communication can be divided into network coverage inner communication, partial network coverage side communication and network coverage outer communication.
- FIG. 1 to FIG. 5 are system frameworks from vehicle-mounted terminals to vehicle-mounted terminals provided by the present application.
- all terminals including terminal 1 and terminal 2 performing sideline communication are within the coverage of the network equipment, so all terminals can receive the configuration of the network equipment. Signaling, sidelink communication based on the same sidelink configuration.
- some terminals performing lateral communication are located within the coverage of network equipment, and these terminals (ie, terminal 1) can receive configuration signaling from network equipment, and Sidewalk communication is performed according to the configuration of the network device.
- the terminal outside the network coverage i.e. terminal 2 cannot receive the configuration signaling of the network equipment.
- the terminal outside the network coverage will The sidelink configuration is determined by the information carried in the sidelink broadcast channel PSBCH sent by the internal terminal, and sidelink communication is performed.
- all terminals including terminal 1 and terminal 2 performing side communication are located outside the network coverage, and all terminals determine the side configuration according to the pre-configuration information to perform side communication .
- the central control node for side communication with a central control node, multiple terminals (including terminal 1, terminal 2, and terminal 3) form a communication group, and the communication group has a central control node and can become a group leader Terminal (Cluster Header, CH), the central control node has one of the following functions: responsible for the establishment of communication groups; joining and leaving of group members; performing resource coordination, allocating sideline transmission resources for other terminals, and receiving sideline transmission resources of other terminals. Feedback information; resource coordination with other communication groups and other functions.
- terminal 1 shown in FIG. 4 is the central control node in the communication group formed by terminal 1 , terminal 2 and terminal 3 .
- Device-to-device communication is a sidelink (Sidelink, SL) transmission technology based on D2D.
- SL Sidelink
- the Internet of Vehicles system uses terminal-to-device direct communication. way, so it has higher spectral efficiency and lower transmission delay.
- Two transmission modes are defined in 3GPP: first mode and second mode.
- the transmission resources of the terminal are allocated by the network equipment, and the terminal sends data on the sidelink according to the resources allocated by the network equipment; the network equipment can allocate resources for a single transmission to the terminal, and can also allocate semi-static transmission resources for the terminal resource. As shown in FIG. 1 , the terminal is located within the coverage of the network, and the network allocates transmission resources for sidelink transmission to the terminal.
- the terminal selects a resource from the resource pool for data transmission.
- the terminal is located outside the coverage area of the cell, and the terminal independently selects transmission resources from the pre-configured resource pool for sidelink transmission; or as shown in Figure 1, the terminal independently selects transmission resources for sidelink transmission from the resource pool configured by the network transmission.
- LTE-V2X broadcast transmission is supported, and in NR-V2X, unicast and multicast transmission are introduced.
- Fig. 5 is a schematic diagram of unicast transmission provided by this application. As shown in FIG. 5 , unicast transmission is performed between terminal 1 and terminal 2 .
- FIG. 6 is a schematic diagram of multicast transmission provided by this application. As shown in FIG. 6 , terminal 1, terminal 2, terminal 3 and terminal 4 form a communication group, wherein terminal 1 sends data, and other terminal devices in the group are receiving terminals.
- the receiving end is any terminal around the sending end terminal.
- Fig. 7 is a schematic diagram of broadcast transmission provided by the present application. As shown in FIG. 7 , terminal 1 is a transmitting terminal, and other terminals around it, terminal 2 to terminal 6 are all receiving terminals.
- FIG. 8 is an example of a time slot structure not including a PSFCH channel provided by an embodiment of the present application
- FIG. 9 is an example of a time slot structure including a PSFCH channel provided by an embodiment of this application.
- the PSCCH in NR-V2X starts from the second side row symbol of the time slot in the time domain and occupies 2 or 3 OFDM symbols, and can occupy ⁇ 10,12 in the frequency domain 15, 20, 25 ⁇ PRBs.
- the number of PRBs occupied by PSCCH must be less than or equal to the number of PRBs contained in a subchannel in the resource pool, so as not to cause 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 (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 AGC (Automatic Gain Control, Automatic Gain Control) symbol. Data is generally not used for data demodulation.
- the PSSCH occupies K sub-channels in the frequency domain, and each sub-channel includes N consecutive PRBs.
- the PSFCH channel may not be included in the time slot.
- a time slot includes a PSFCH channel
- the second-to-last and third-to-last symbols in the time slot are used for PSFCH channel transmission, and a time domain symbol before the PSFCH channel is used as a GP symbol.
- NR/5G systems include large-bandwidth communications in high-frequency bands (eg, 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
- For the millimeter-wave antenna array due to the shorter wavelength, the antenna element spacing and the smaller aperture, more physical antenna elements can be integrated in a limited-sized two-dimensional antenna array.
- a cell uses a wider beam (beam) to cover the entire cell. Therefore, at each moment, a terminal (User Equipment, UE) within the coverage of the cell has the opportunity to obtain the transmission resource allocated by the system.
- Fig. 10 is a schematic diagram of a non-analog beam provided by an embodiment of the present application. As shown in Figure 10, the LTE/NR network side uses a wide beam to cover the entire cell, and UE1-UE5 can receive the signal sent by the network device at any time.
- NR/5G multi-beam (Multi-beam) system covers the entire cell through different beams, that is, each beam covers a small area, and achieves the effect of multiple beams covering the entire cell through time sweeping.
- Fig. 11 is a schematic diagram of an analog beam provided by an embodiment of the present application. As shown in Figure 11, the network side 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.
- the NR network side uses beam 1 Cover the area where user 1 is located; 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 Side pass beam 4 covers the area where user 5 is located. Because the network uses narrower beams, the transmission energy can be more concentrated, so it can cover a longer distance; at the same time, because the beams are narrower, each beam can only cover a part of the cell area, so analog beamforming is "time-for-time space".
- Analog beamforming can be used not only for network-side devices, but also for terminal devices. At the same time, analog beamforming can be used not only for signal transmission, but also for signal reception; the beam used to transmit signals can be called a transmit beam, and the beam used to receive signals can be called a receive beam.
- Different beams are identified by the different signals carried on them.
- different synchronization signals and/or physical broadcast channel blocks (Synchronization Signal/PBCH Block, SSB) are transmitted on different beams, and the UE can distinguish different beams through different SSBs.
- SSB Synchronization Signal/PBCH Block
- different CSI-RSs are transmitted on different beams, and the UE identifies different beams through CSI-RS/CSI-RS resources.
- the CSI-RS mentioned herein can be understood as a signal actually corresponding to a certain/certain physical beam.
- the Physical Downlink Control Channel (PDCCH) and the Physical Downlink Shared Channel (PDSCH) can be transmitted through different downlink transmission beams.
- omnidirectional antennas or near-omnidirectional antennas are used to receive signals sent by different downlink transmission beams of the base station.
- corresponding beam indication (beam indication) information is needed to assist the UE in determining the related information of the transmitting beam on the network side, or the corresponding receiving beam related information on the UE side.
- the beam indication information is not used to directly indicate the beam, but to indicate the beam through quasi-co-located (QCL) between signals.
- QCL quasi-co-located
- determining the statistical characteristics of receiving the corresponding channel/signal is also based on the QCL assumption.
- the terminal when it performs signal reception, in order to improve the reception performance, it may use the characteristics of the transmission environment corresponding to the data transmission 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).
- the characteristics of the transmission environment corresponding to the data transmission may also change, so in the NR system , when the network side transmits the downlink control channel or data channel, it will indicate the corresponding QCL status information to the terminal device through the TCI status.
- TRP Transmission Reception Point
- panel panel
- beam beam
- a TCI state can contain the following configurations:
- TCI state ID used to identify a TCI state
- the TCI state may also include QCL information 2.
- a QCL information contains the following information:
- QCL 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 ID where the reference signal is located, the BWP ID and the identification of the reference signal; the identification of the reference signal can be a CSI-RS resource ID or an SSB 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 type configuration is as follows:
- '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 syntax elements of the TCI state can be implemented as:
- the network side can indicate the corresponding TCI state for the downlink signal or downlink channel.
- the terminal can assume that the target downlink The channel or target downlink signal is the same as the large-scale parameter of the reference SSB or reference CSI-RS resource, and the large-scale parameter is determined through QCL type configuration.
- the terminal can adopt and receive the reference SSB or reference CSI-RS resource through the TCI state, and the QCL type is configured as QCL typeD, then the terminal can adopt and receive the reference SSB or reference The receiving beams with the same CSI-RS resources are used to receive the target downlink channel or target downlink signal.
- the target downlink channel (or downlink signal) and its reference SSB or reference CSI-RS resource are sent by the same TRP, the same antenna array block (panel) or the same beam on the network side. If the TRPs or antenna array blocks or transmit beams of two downlink signals or downlink channels are different, different TCI states are usually configured.
- the TCI state of the corresponding CORESET can be indicated through RRC signaling or RRC signaling+MAC signaling.
- the available TCI state set is indicated through RRC signaling, and some of the TCI states are activated through MAC layer signaling, and finally one or two of the activated TCI states are indicated through the TCI state indication field in DCI TCI state, used for the PDSCH scheduled by the DCI.
- FIG. 12 is a schematic flowchart of a method 100 for configuring a TCI state of a PDSCH provided by an embodiment of the present application.
- the method 100 may include:
- the beam involved in this application may also be called a spatial domain filter or may correspond to a spatial domain filter
- the transmitting beam may be referred to as a spatial domain transmission filter (spatial domain transmission filter) or may correspond to a spatial domain transmission filter
- the receiving beam may be called a spatial domain receive filter (spatial domain receive filter) or may correspond to a spatial domain receive filter.
- NR New Radio
- 5G 5th Generation Mobile Communication Technology
- NR New Radio
- 5G 5th Generation Mobile Communication Technology
- a large-scale antenna array Massive MIMO
- the entire cell is covered by multi-beam, that is, each beam covers a small range, and the effect of multiple beams covering the entire cell is achieved by sweeping in time.
- the network device may use the beam indication information to assist the terminal side in determining information about the sending beam on the network side or information about the receiving beam corresponding to the terminal side.
- the receiving terminal since both the receiving terminal and the transmitting terminal perform sidelink communication based on multi-beams, at this time, the receiving terminal The receiving beam of the terminal may not be aligned with the transmitting beam of the transmitting terminal, which reduces the signal gain and transmission performance.
- NR New Radio
- SL sidelink
- an embodiment of the present application provides a wireless communication method, a first terminal device, and a second terminal device, which can ensure that the target spatial domain receiving filter used by the first terminal device is compatible with the spatial domain transmitting filter used by the second terminal device. Accurate, which in turn can maximize the signal gain and improve transmission performance.
- Fig. 13 is a schematic flowchart of a wireless communication method 200 provided by an embodiment of the present application, and the method 200 may be interactively executed by a first terminal device and a second terminal device.
- the first terminal device may be a receiving end for receiving the CSI-RS
- the second terminal device may be a sending end for sending the CSI-RS.
- the first terminal device or the second terminal device may be the terminal B mentioned above
- the first terminal device or the second terminal device may be the terminal A mentioned above.
- the method 200 may include part or all of the following:
- CSI-RS Channel State Information Reference Signal
- the first terminal device respectively measures the CSI-RS received using multiple spatial receiving filters, and based on the measurement results of the multiple CSI-RS, among the multiple spatial receiving filters, A target spatial domain receiving filter for the first terminal device to receive sidelink data is determined.
- the first terminal device can determine the target spatial receiving filter for the first terminal device to receive sidelink data from among the multiple spatial receiving filters Based on this, when the first terminal device receives the sidelink data sent by the second terminal device using the airspace transmit filter corresponding to the target airspace receive filter based on the target airspace receive filter, it can ensure that the The target spatial domain receive filter is aligned with the spatial domain transmit filter used by the second terminal device, thereby maximizing signal gain and improving transmission performance.
- the CSI-RSs in the plurality of CSI-RSs are side row CSI-RSs.
- the multiple CSI-RSs may also be replaced by other sidelink signals, that is, in the above S210, the first terminal device may use multiple spatial domain receiving filters to respectively receive multiple sidelink signals.
- the side signals in the plurality of side signals include but are not limited to one of the following:
- CSI-RS demodulation reference signal
- DMRS demodulation Reference Signal
- PSCCH DMRS PSSCH DMRS
- positioning reference signal Positioning Reference Signals, PRS
- phase tracking reference signal Phase Tracking Reference Signal
- PT-RS Phase Tracking Reference Signal
- side line Synchronization signals including side-line primary synchronization signals and/or side-line secondary synchronization signals.
- the S210 may include:
- the multiple spatial domain receiving filters respectively receive the multiple CSI-RSs sent by the second terminal device using the same spatial domain transmitting filters.
- the second terminal device uses the same spatial domain transmit filter to send the multiple CSI-RSs, so that the first terminal device uses the multiple spatial domain receive filters to respectively receive the second terminal device using the same
- the multiple CSI-RS sent by the spatial domain transmit filter and then determine the target spatial domain receive filter based on the measurement results of the multiple CSI-RS.
- the spatial domain transmission filter used by the second terminal device when transmitting the plurality of CSI-RSs is a target (or optimal) spatial domain transmission filter
- the target spatial domain reception filter is the An optimal spatial domain receive filter corresponding to the target spatial domain transmit filter of the device.
- the second terminal device uses different spatial domain transmission filters to transmit CSI-RS in turn, and the first The terminal device uses the same spatial domain receiving filter to respectively receive multiple CSI-RS sent by the second terminal device, and measure the detected CSI-RS, select the optimal CSI-RS resource and feed it back to the
- the spatial domain transmission filter corresponding to the CSI-RS resource is a target (or optimal) spatial domain transmission filter for the first terminal device.
- the second terminal device uses the same spatial domain transmitting filter to transmit the CSI-RS.
- the second terminal device transmits the CSI-RS using the optimal spatial domain transmission filter for the first terminal device, and the first terminal device uses different spatial domain reception filters in turn to receive the second terminal device
- the CSI-RS is sent and measured, and the spatial receiving filter with the best measurement result is selected as the optimal spatial receiving filter corresponding to the optimal spatial transmitting filter of the first terminal device.
- the first terminal device may use the corresponding optimal spatial domain receive filter to perform corresponding reception.
- the second terminal device respectively adopts the above process for different sending spatial domain filters, and may respectively determine the optimal spatial receiving filter corresponding to each transmitting spatial domain filter. Therefore, when the second terminal device is performing sidelink transmission, the second terminal device can indicate the transmit spatial domain filter used for the sidelink transmission, and the first terminal device can determine the corresponding best An optimal spatial receiving filter is used to perform side-row receiving.
- the method 200 may also include:
- the first indication information is used to indicate the number of the plurality of spatial receiving filters.
- the second terminal device may send CSI-RS to the first terminal device based on the number of spatial receiving filters indicated by the first indication information, for example, the number of CSI-RS sent by the second terminal device and the number of CSI-RSs sent by the first indication information
- the number of spatial receive filters indicated is the same.
- the second terminal device Since the second terminal device does not know the antenna configuration of the first terminal device, it cannot determine how many airspace receiving filters the first terminal device supports.
- the device determines the number or times of CSI-RS sent, and the first terminal device sends the first indication information to the second terminal device to indicate the spatial domain reception filter supported by the first terminal device to ensure that the CSI-RS sent by the second terminal device can make the first terminal device receive the CSI-RS once by using all the spatial domain receiving filters.
- the first terminal device supports N spatial receiving filters
- the number or times of CSI-RS sent by the second terminal device should be greater than or equal to N.
- the multiple spatial domain reception filters include a spatial domain reception filter supported by the first terminal device.
- the plurality of spatial receiving filters include a spatial receiving filter of the first terminal device that can be used to receive sidelink data.
- the first indication information is carried in at least one of the following: sidelink control information (Sidelink Control Information, SCI), media access control (Media Access Control, MAC) control element (Control Element, CE ) or PC5 Radio Resource Control (Radio Resource Control, RRC).
- sidelink control information SCI
- media access control Media Access Control
- MAC Media Access Control
- CE Control Element
- PC5 Radio Resource Control Radio Resource Control
- Fig. 14 is a schematic diagram of receiving multiple CSI-RSs based on the first indication information provided by the embodiment of the present application.
- the first terminal device supports 4 spatial receiving filters, therefore, the first indication information sent by the first terminal device to the second terminal device indicates 4, the When sending CSI-RS, the second terminal device uses the optimal spatial transmission filter, such as spatial transmission filter 2, to transmit CSI-RS at least 4 times, so that the first terminal device can use different spatial domains to receive
- the filter measures the CSI-RS sent by the second terminal device, so as to select an optimal spatial domain receiving filter, such as spatial domain receiving filter 2 .
- the method 200 may also include:
- the second indication information is used to indicate the maximum number of CSI-RS sent by the second terminal device; or the second indication information is used to indicate the CSI corresponding to the CSI-RS sent by the second terminal device - Maximum number of RS resources.
- the second terminal device sends second indication information to the first terminal device, where the second indication information is used to indicate a parameter M, and the parameter M is used to indicate that the CSI-
- the maximum number of CSI-RS resources included in the RS resource set or indicates the maximum number or maximum number of CSI-RSs to be sent by the second terminal device, or indicates the CSI-RSs to be sent by the second terminal device The maximum number or maximum number of RS resources.
- the second terminal device may decide to send The maximum number of CSI-RS or CSI-RS resources, and indicate the maximum number to the first terminal device through the second indication information, so that the first terminal device indicates based on the second indication information
- the maximum number of spatial domain reception filters selected for receiving the CSI-RS for example, the number of spatial domain reception filters selected by the first terminal device is equal to the maximum number.
- the second terminal device may use the same spatial transmitting filter to send the CSI-RS M times, and Inform the first terminal device of the parameter M, and at this time, the first terminal device decides which airspace receiving filters to use to receive the CSI-RS sent by the second terminal device in turn.
- the first terminal device can know how many times the second terminal device will send the CSI-RS according to the second indication information, so as to determine whether the second terminal device has finished sending all the CSI-RS, if If yes, the first terminal device may select a spatial domain reception filter according to the RSRP measured by the CSI-RS.
- the second indication information may be used to indicate the number of CSI-RS sent by the second terminal device, or the second indication information may be used to indicate the CSI-RS sent by the second terminal device corresponds to Number of CSI-RS resources.
- the second indication information may be used to indicate the number of the multiple CSI-RSs, or the second indication information may be used to indicate the number of CSI-RS resources corresponding to the multiple CSI-RSs.
- the maximum number is greater than or equal to the number of the multiple CSI-RSs.
- the maximum number of CSI-RS sent by the second terminal device may be greater than or equal to the number of CSI-RS actually sent by the second terminal device.
- the CSI-RS sent by the second terminal device corresponds to The maximum number of CSI-RS resources may be greater than or equal to the number of resources corresponding to the CSI-RS actually sent by the second terminal device.
- the maximum number of CSI-RSs sent by the second terminal device may be the number of CSI-RSs that the second terminal device plans or intends to send, and the CSI-RS sent by the second terminal device corresponds to the CSI-RS
- the maximum number of RS resources may be the number of CSI-RSs corresponding to the CSI-RSs that the second terminal device plans or intends to send.
- the second indication information is used to indicate the maximum number of CSI-RS resources corresponding to the CSI-RS sent by the second terminal device, including: the second indication information is used to indicate that the second terminal device The number of all CSI-RS resources in the CSI-RS resource set corresponding to the CSI-RS sent by the device.
- the multiple CSI-RSs are the CSI-RSs received by the spatial receiving filter corresponding to the CSI-RS resources in the CSI-RS resource set corresponding to the CSI-RS sent by the second terminal device.
- the second indication information is carried in at least one of the following: SCI, MAC CE or PC5RRC.
- FIG. 15 is a schematic diagram of a first terminal device receiving multiple CSI-RSs based on second indication information provided by an embodiment of the present application.
- the second terminal device When using the same spatial domain transmission filter to transmit CSI-RS, the second terminal device transmits CSI-RS twice, that is, uses spatial domain transmission filter 2 to transmit CSI-RS resources twice, and the transmission of CSI-RS resources The number of times (that is, 2) is indicated to the first terminal device, and the first terminal device can determine that the second terminal device will send the CSI-RS twice, and at this time, the first terminal device decides to receive the 2 CSI-RS Spatial reception filter used when sub-CSI-RS.
- the first terminal device may use spatial receiving filter 1 and spatial receiving filter 2 to receive, or use spatial receiving filter 0 and spatial receiving filter 2 to receive, or use spatial receiving filter 1 and spatial receiving filter
- the filter 3 receives, which is not specifically limited in this embodiment.
- the method 200 may also include:
- the third indication information is used to indicate at least one CSI-RS resource set corresponding to the multiple CSI-RSs and/or each CSI of the multiple CSI-RSs in the at least one CSI-RS resource set - the corresponding CSI-RS resource in the RS resource set.
- the first terminal device may receive the multiple CSI-RSs based on the CSI-RS resource set or the CSI-RS resources indicated by the third indication information.
- different CSI-RSs among the multiple CSI-RSs correspond to different CSI-RS resources.
- the third indication information includes the identifier of the at least one CSI-RS resource set and/or the plurality of CSI-RS in each CSI-RS resource set in the at least one CSI-RS resource set The identifier of the corresponding CSI-RS resource.
- the repetition parameter of the at least one CSI-RS resource set is turned on (on).
- the repetition parameter of the CSI-RS resource set for receiving the plurality of CSI-RS is set to on.
- the reported amount associated with the at least one CSI-RS resource set is set to no report or null (none).
- the reporting amount of the CSI-RS resource set used to receive the multiple CSI-RSs is set to empty, that is, after the first terminal device receives the multiple CSI-RSs, it does not need to report to the second The terminal device reports.
- the third indication information is carried in at least one of the following: SCI, MAC CE or PC5RRC.
- the method 200 may also include:
- the resource pool configuration information or BWP configuration information is used to configure a CSI-RS resource set or a CSI-RS resource;
- the at least one CSI-RS resource set is determined according to the CSI-RS resource set configured by the resource pool configuration information or the BWP configuration information.
- the first terminal device may determine the CSI-RS resource set used for The first terminal device receives the CSI-RS resource sets of the multiple CSI-RSs.
- the second terminal device and the first terminal device can have the same CSI-RS resource configuration, and further, the second terminal device and the first terminal device can have the same CSI-RS resource configuration.
- the first terminal device can have the same understanding regarding the sending of the CSI-RS resource and the at least one CSI-RS resource set and/or CSI-RS resource indicated by the third indication information.
- the at least one CSI-RS resource set determined by the first terminal device may be one of the CSI-RS resource sets configured in the resource pool configuration information, or may be only Part of the CSI-RS resources are selected from the CSI-RS resource set configured in the resource pool configuration information, which is not specifically limited in this application.
- the resource pool configuration information or the sidelink bandwidth part BWP configuration information is used to configure A CSI-RS resource sets, and the first terminal device sends the
- the third indication information includes the index of the CSI-RS resource set in the third indication information, and the CSI-RS resource set can be determined through the index of the CSI-RS resource set, and the CSI-RS resource set is the The CSI-RS resource set corresponding to the CSI-RS to be sent by the second terminal device.
- the CSI-RS resource set includes B CSI-RS resources
- the second terminal device may select K CSI-RS resources from the CSI-RS resource set, and use the K CSI-RS resources
- the information of the RS resources is sent to the first terminal device through the third indication information, and the CSI-RS resources sent subsequently by the second terminal device belong to the K CSI-RS resources.
- the CSI-RS resource set includes 16 CSI-RS resources, and when it is necessary to determine the spatial domain reception filter of the first terminal device, the maximum number of spatial domain reception filters supported by the first terminal device is 4 At this time, the first terminal device selects 4 CSI-RS resources from the 16 CSI-RS resources included in the CSI-RS resource set, and sends the information of the 4 CSI-RS resources through the PC5 - sending RRC signaling to the second terminal device, so that the second terminal device and the first terminal device have the same CSI-RS resource information.
- the CSI-RS resource set configured by the resource pool configuration information or the BWP configuration information includes a first CSI-RS resource set and a second CSI-RS resource set, and the repetition parameter of the first CSI-RS resource set set to off (off), the repetition parameter of the second CSI-RS resource set is set to on (on); the at least one CSI-RS resource set is determined according to the second CSI-RS resource set.
- the CSI-RS resource set (CSI-RS-ResourceSet) configured by the resource pool configuration information or BWP configuration information may include at least one first CSI-RS resource set whose repetition (repetition) parameter is set to off (off), And/or include at least one second CSI-RS resource set whose repetition (repetition) parameter is set to on (on).
- the first set of CSI-RS resources is used to determine a spatial domain transmit filter of the second terminal device
- the second set of CSI-RS resources is used to determine a spatial domain receive filter of the first terminal device.
- the repetition parameter of the CSI-RS resource set used by the second terminal device may be used to reflect or indicate that the CSI-RS sent by the second terminal device is used to determine the spatial domain transmission filter
- the filter is also used to determine the spatial domain receive filter.
- the CSI-RS resource set configured by the resource pool configuration information or BWP configuration information includes two CSI-RS resource sets, wherein the repetition parameter in one CSI-RS resource set is off, and the other CSI-RS resource set The repeat parameter in is on.
- the second terminal device uses different spatial transmission filters to transmit the CSI-RS resources in the CSI-RS resource set respectively , the first terminal device measures the CSI-RS resources respectively, and feeds back the CSI-RS resource index, and the second terminal device can determine the corresponding airspace transmission filter according to the index; when it is determined that the airspace reception
- the second terminal device uses the same spatial domain transmission filter to respectively transmit the CSI-RS resources in the CSI-RS resource set, and the second A terminal device respectively uses different spatial domain receiving filters for receiving, measures RSRP for the CSI-RS, and selects an optimal spatial domain receiving filter according to the measurement result.
- the second terminal device uses different spatial domain transmission filters to transmit the CSI-RS resources in the first CSI-RS resource set; when the CSI-RS sent by the second terminal device is used to determine the spatial domain receiving filter of the first terminal device, the second terminal device uses the same spatial domain
- the sending filter sends the CSI-RS resources in the second CSI-RS resource set.
- the resource pool configuration information or BWP configuration information includes at least one of the following parameters:
- the identifier of the CSI-RS resource set (CSI-RS-ResourceSetId);
- N The number N of time-domain symbols occupied by a CSI-RS resource, where N is an integer greater than or equal to 1;
- the CSI-RS density is used to indicate the number of REs occupied by the CSI-RS of one antenna port in one PRB.
- the identifier of the CSI-RS resource set is used to uniquely identify the CSI-RS resource set.
- the repetition parameter of the CSI-RS resource set may be set to on or off.
- the identifier of the CSI-RS resource is used to uniquely identify the CSI-RS resource.
- the resource pool configuration information or BWP configuration information may include the CSI-RS resource set The identifier (CSI-RS-ResourceSetId), the identifier of the CSI-RS resource (CSI-RS-Resource) and the repetition (repetition) parameter.
- the CSI reporting amount is used to configure the reporting amount or feedback type, and the reporting amount or feedback type includes but is not limited to:
- CSI-RS Resource Indicator CRI
- CRI and Reference Signal Receiving Power Reference Signal Receiving Power
- RSRP Reference Signal Receiving Power
- SINR Signal to Interference plus Noise Ratio
- slot resource indication slot resource indication and RSRP, slot resource indication and SINR, do not report or empty ('none').
- the CSI reporting configuration identifier may be used to associate the CSI reporting amount with a CSI-RS resource set or a CSI-RS resource.
- the CSI reporting amount and the CSI reporting configuration identifier may be included in CSI reporting configuration information (CSI-ReportConfig).
- the resource pool configuration information or BWP configuration information may include at least one CSI report configuration information, where each CSI report configuration information in the at least one CSI report configuration information includes a CSI report configuration identifier (CSI-ReportConfigId) and Report Quantity.
- CSI-ReportConfigId CSI report configuration identifier
- the information for determining the time-domain symbol where the CSI-RS resource in a slot is located may be an index of the time-domain symbol in the slot.
- the information for determining the resource element RE or the position of the subcarrier where the CSI-RS resource is located in a physical resource block PRB may indicate a PRB in the form of a bitmap through the parameter sl-CSI-RS-FreqAllocation The location of the RE or the subcarrier where the inner CSI-RS resource is located.
- the information used to determine the resource element RE or the position of the subcarrier where the CSI-RS resource in a physical resource block PRB is located may be the information used to determine the first CSI-RS resource in a physical resource block PRB.
- the number of CSI-RS antenna ports includes but not limited to 1, 2, 4, 8 and so on.
- the CSI-RS density may be used to indicate the number of REs occupied by the CSI-RS of each antenna port in a 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 density is less than 1, and the CSI-RS resource configuration information further includes PRB information used to indicate CSI-RS resource mapping. If the density is 0.5, that is, each antenna port in every 2 PRBs occupies 1 RE, at this time, the CSI-RS resource configuration information also includes PRB information used to indicate that CSI-RS resources are mapped in every 2 PRBs, For example, CSI-RSs are mapped on odd (or even) PRBs.
- the method 200 may also include:
- the fourth indication information is used to indicate that the CSI-RS sent by the second terminal device is used to measure channel state information; or the fourth indication information is used to indicate that the CSI-RS sent by the second terminal device is used to measure channel state information; Determining a target airspace transmission filter for the second terminal device to transmit sidelink data; or the fourth indication information is used to indicate that the CSI-RS transmitted by the second terminal device is used for the first terminal device The target spatial domain receive filter is determined.
- the first terminal device may determine, based on the fourth indication information, whether the CSI-RS sent by the second terminal device is used for measuring channel state information or for determining
- the target airspace transmit filter for the second terminal device to send sidelink data is also used to determine the target airspace receive filter.
- the CSI-RS and the PSCCH carrying the SCI are usually transmitted in the same time slot.
- the first terminal device When receiving the PSCCH, the first terminal device usually needs to use a spatial receiving filter to receive the PSCCH. Therefore, the The first terminal device needs to know in advance whether the PSCCH and its associated CSI-RS are used to determine the spatial receiving filter, so as to know whether to use different spatial receiving filters to receive the CSI-RS sent by the second terminal device respectively .
- the first terminal device can use the fourth indication information to distinguish whether the sidelink data or CSI-RS sent by the second terminal device is used for normal data transmission or for determining the airspace transmission filter or spatial domain receive filter.
- the first terminal device uses the spatial domain reception filter corresponding to the spatial domain transmission filter to receive, and measures the CSI-RS and feeds back the CQI and RI; and for determining the spatial domain transmission
- the first terminal device usually uses the same spatial domain receiving filter to receive, and performs CSI-RS measurement and selects a preferred CSI-RS resource to feed back to the second terminal device,
- the second terminal device determines the optimal spatial domain transmit filter; and for the CSI-RS sent during the process of determining the spatial domain receive filter of the first terminal device, the first terminal device needs to use different CSI-RS in turn.
- the spatial domain receiving filter receives the CSI-RS, and selects the optimal spatial domain receiving filter according to the measurement results.
- the channel state information includes but not limited to: Channel Quality Indicator (Channel Quality Indicator, CQI), Rank Indication (Rank Indication, RI) or Pre-coding Matrix Indicator (Pre-coding Matrix Indicator, PMI).
- CQI Channel Quality Indicator
- RI Rank Indication
- PMI Pre-coding Matrix Indicator
- the fourth indication information is used to indicate that the CSI-RS sent by the second terminal device is used by the first terminal device to determine the target airspace receiving filter, and the fourth indication information is used to Indicate at least one of the following:
- the second terminal device sends a CSI-RS for the first terminal device to determine the target spatial domain receiving filter
- the second terminal device transmits the multiple CSI-RSs using the same spatial transmission filter
- the CSI-RS resource set corresponding to the CSI-RS sent by the second terminal device is a CSI-RS resource set whose repetition parameter is set to ON;
- the reported amount associated with the CSI-RS sent by the second terminal device is set to be empty.
- the fourth indication information is used to indicate that the CSI-RS sent by the second terminal device is used by the first terminal device to determine the target airspace reception filter, and the fourth indication information is included to indicate the following At least one of:
- the second terminal device is about to send a CSI-RS used by the first terminal device to determine the target spatial reception filter
- the second terminal device is about to use the same spatial domain transmission filter to transmit the multiple CSI-RSs;
- the CSI-RS resource set corresponding to the CSI-RS to be sent by the second terminal device is a CSI-RS resource set whose repetition parameter is set to ON;
- the second terminal device sets the reported amount associated with the CSI-RS to be sent to null.
- the fourth indication information is used to indicate that the CSI-RS sent by the second terminal device is used to measure channel state information; or the fourth indication information is used to indicate that the CSI-RS sent by the second terminal device is used When determining the target airspace transmission filter for the second terminal device to transmit sidelink data, it may also be indicated in a similar manner, which is not specifically limited in this application.
- the fourth indication information may indirectly indicate the CSI sent by the second terminal device by indicating that the CSI-RS resource set corresponding to the CSI-RS sent by the second terminal device is a repeated parameter setting. - the purpose or use of the RS.
- the first terminal device may reflect or indicate the CSI sent by the second terminal device through the repetition parameter of the CSI-RS resource set used by the second terminal device. - Whether the RS is used to determine the optimal spatial transmit filter or to determine the optimal spatial receive filter.
- the CSI-RS resource set configured by the resource pool configuration information or BWP configuration information includes two CSI-RS resource sets, wherein the repetition parameter in one CSI-RS resource set is off, and the other CSI-RS resource set The repeat parameter in is on.
- the first terminal device may assume that The second terminal device uses different spatial domain transmission filters to transmit CSI-RS resources, therefore, the first terminal device can perform measurement according to the CSI-RS, and feed back a preferred CSI-RS resource index and/or measurement result, Thereby enabling the second terminal device to determine a preferred airspace transmission filter; when the fourth indication information is used to indicate that the CSI-RS resource set corresponding to the CSI-RS sent by the second terminal device is a repeated parameter set to open When the set of CSI-RS resources is set, the first terminal device may assume that the second terminal device uses the same spatial domain transmit filter to transmit CSI-RS resources, therefore, the first terminal device may use different spatial domain receive filter The receivers receive the CSI-RS respectively, measure the CSI-RS, and select the optimal spatial domain receiving filter according to the measurement results, so as to realize the selection
- the fourth indication information may be used to indicate that the CSI-RS resource set corresponding to the CSI-RS sent by the second terminal device is a CSI-RS resource set with the repetition parameter set to ON, when the repetition parameter is set to When it is turned on, it means that the transmitted CSI-RS is transmitted using the same spatial domain transmission filter, that is, the same spatial domain transmission filter is used to transmit the CSI-RS.
- the fourth indication information may be used to indicate that the CSI-RS resource set corresponding to the CSI-RS sent by the second terminal device is a CSI-RS resource set whose repetition parameter is set to off, and when the repetition parameter is set to When off, it means that the transmitted CSI-RS is not transmitted using the same spatial domain transmission filter, that is, different spatial domain transmission filters are used to transmit the CSI-RS.
- the second terminal device uses the same spatial domain transmit filter to transmit CSI-RS
- the first terminal device can use different spatial domain receive filters to receive, measure different CSI-RS, and select the optimal The spatial domain receiving filter of is used as the target spatial domain receiving filter.
- the fourth indication information may indirectly indicate the purpose or use of the CSI-RS sent by the second terminal device by indicating the reported amount associated with the CSI-RS sent by the second terminal device.
- the first terminal device may reflect or indicate the CSI-RS sent by the second terminal device through the reported amount associated with the CSI-RS sent by the second terminal device.
- RS is used to determine the optimal spatial domain transmit filter or to determine the optimal spatial domain receive filter.
- the CSI-RS resource set configured by the resource pool configuration information or BWP configuration information includes two CSI-RS resource sets, and the CSI reporting amount associated with the CSI-RS resource set is configured.
- the CSI reporting amount associated with the RS resource set is RSRP
- the CSI reporting amount associated with the second CSI-RS resource set is empty.
- the first terminal device may transmit CSI-RS resources according to the CSI-RS performing measurement, and feeding back a preferred CSI-RS resource index and/or measurement result, so that the second terminal device determines a preferred airspace transmission filter; when the second terminal device sends to the first terminal device
- the fourth indication information is used to indicate that when the amount of CSI reporting is empty, it means that the second terminal device will send the CSI-RS resource in the second CSI-RS resource set.
- the first terminal device may assume that the second terminal device uses the same spatial domain transmit filter to transmit CSI-RS resources, therefore, the first terminal device may use different spatial domain receive filters to respectively receive the CSI-RS and measure the CSI-RS, The optimal spatial domain receiving filter is selected according to the measurement results, so as to realize the selection process of the spatial domain receiving filter.
- the fourth indication information is carried in at least one of the following: SCI, MAC CE or PC5RRC.
- the method 200 may also include:
- the second terminal device sends the fifth indication information to the first terminal device, and correspondingly, after receiving the fifth indication information, the first terminal device may The delay boundary receives the multiple CSI-RSs.
- the S210 may include:
- the measurement results of the plurality of CSI-RSs include measurement results of received CSI-RSs in the plurality of CSI-RSs.
- the first terminal device may determine the target receiving filter according to the CSI-RS measurement result.
- the The first terminal device when the first terminal device exceeds the delay boundary, even if the first terminal device does not receive the CSI-RS sent by the second terminal device using a certain spatial domain receiving filter, the The first terminal device also assumes that the second terminal device has sent a CSI-RS to the first terminal device, so as to prevent the first terminal device from using the certain airspace receiving filter to perform meaningless reception, reducing It reduces the power consumption of the device and improves the utilization rate of the airspace receiving filter.
- the fifth indication information is carried in at least one of the following: SCI, MAC CE or PC5RRC.
- the method 200 may also include:
- Receive sixth indication information sent by the second terminal device where the sixth indication information is used to indicate multiple transmission resources corresponding to the multiple CSI-RSs.
- the second terminal device sends the sixth indication information to the first terminal device, and after receiving the sixth indication information, the first terminal device transmit resources, and receive the multiple CSI-RSs. That is to say, the second terminal device sends the transmission resource information to the first terminal device, so that the first terminal device can know the resources for CSI-RS transmission to be used by the second terminal device, Therefore, the CSI-RS sent by the second terminal device can be received using different spatial domain receiving filters.
- the multiple CSI-RSs are in one-to-one correspondence with the multiple transmission resources.
- the transmission resource involved in this application may be any resource used to transmit CSI-RS in the time domain, such as time domain symbols, time slots or subframes.
- the S210 may include:
- the multiple CSI-RSs are received on the multiple transmission resources by using multiple spatial domain receive filters.
- the multiple transmission resources are obtained by the second terminal device through listening, or the multiple transmission resources are obtained by the second terminal device from a network device.
- the priorities corresponding to the multiple CSI-RSs are the highest priorities.
- the first terminal device expects the second terminal device to use the multiple transmission resources to send the multiple CSI-RSs; or, the first terminal device does not expect the second terminal device to Perform resource reselection on the multiple transmission resources; or, the second terminal device does not perform resource reselection on the multiple transmission resources; or, the second terminal device does not re-evaluate the multiple transmission resources ( Re-evaluation) detection and pre-emption (pre-emption) detection.
- the second terminal device After the second terminal device determines the transmission resource for sending the CSI-RS, the second terminal device will not perform resource reselection before sending the CSI-RS.
- the second terminal device acquires a transmission resource for sending CSI-RS from a network device, and the second terminal device sends the sixth indication information to the first terminal device to indicate the transmission resource.
- a terminal device may use different spatial domain receiving filters to respectively receive different transmission resources.
- the second terminal device acquires a transmission resource for sending a CSI-RS based on interception, and the second terminal device sends the sixth indication information to the first terminal device to indicate the transmission resource, Before the second terminal device finishes sending the CSI-RS, the second terminal device will not perform resource reselection, that is, set the priority of sending the CSI-RS to the highest priority, so that its corresponding transmission resources will not be used Other terminals preempt; or deactivate the re-evaluation and resource preemption mechanisms, so as to ensure that the resources selected by the second terminal device will not change due to resource occurrences, so that the first terminal device can use different airspace receiving filters to respectively Different transmission resources are received.
- resource reselection that is, set the priority of sending the CSI-RS to the highest priority, so that its corresponding transmission resources will not be used
- Other terminals preempt; or deactivate the re-evaluation and resource preemption mechanisms, so as to ensure that the resources selected by the second terminal device will not change due to resource occurrences,
- the second terminal device may give up using the resource or reselect resources based on the resource to send CSI-RS.
- the first terminal device cannot detect the SCI sent by the second terminal device on the resource by using a certain airspace receiving filter, and thus cannot detect the CSI-RS. Therefore, the first terminal device The spatial domain reception filter corresponding to the resource will not be selected either.
- FIG. 16 is a schematic diagram of a first terminal device receiving multiple CSI-RSs on the multiple transmission resources by using multiple spatial domain receiving filters according to an embodiment of the present application.
- the second terminal device obtains the transmission resource for sending the CSI-RS, and sends the sixth indication information to the first terminal device in time slot 0, which is used to indicate the resource to send the CSI-RS, That is, the transmission resource located in time slot 3/4/5/6, and resource reselection will not occur during the second terminal device sending the CSI-RS; correspondingly, the first terminal device according to the sixth instruction
- the information may determine the resource on which the second terminal device will send the CSI-RS, therefore, the first terminal device uses different spatial domain receiving filters to receive corresponding transmission resources.
- the sixth indication information is carried in at least one of the following: SCI, MAC CE or PC5RRC.
- the S230 may include:
- the target spatial reception filter is determined.
- the measurement results of the plurality of CSI-RS are used to determine at least one candidate spatial reception filter among the plurality of spatial reception filters
- the target spatial reception filter is the at least one candidate spatial reception filter Any one of the spatial domain receive filters.
- the first terminal device may also directly determine the target spatial reception filter among the multiple spatial reception filters based on the measurement results of the multiple CSI-RSs.
- the first terminal device when the first terminal device supports M spatial domain receive filters, the second terminal device will use the same spatial domain transmit filter to send M CSI-RSs, therefore, the first terminal device can respectively Corresponding reception is performed using M spatial reception filters.
- the first terminal device may only detect a part of the SCI sent by the second terminal device, and then can only detect all
- the CSI-RS scheduled by the above part of the SCI is measured, N optimal measurement results are selected from the measurement results, and the receiving beams corresponding to the N measurement results are used as candidate spatial receiving filters.
- N 1 that is, the first terminal device uses the spatial domain receiving filter corresponding to the optimal measurement result as the optimal spatial domain receiving filter.
- the spatial reception filter corresponding to the CSI-RS whose measurement result is greater than or equal to the first threshold is determined as the at least one candidate spatial reception filter.
- the first terminal device when the first terminal device detects a CSI-RS resource and the measurement result exceeds a threshold, the first terminal device will use the spatial domain reception filter corresponding to the measurement result as a candidate spatial domain reception filter.
- the first threshold is configured by the network device, or the first threshold is indicated by the second terminal device, or the first threshold is pre-configured.
- the spatial reception filter corresponding to the CSI-RS with the best measurement result is determined as the target spatial reception filter filter.
- the S220 may also include:
- the first terminal device uses different spatial domain receiving filters to measure the CSI-RS sent by the second terminal device, such as measuring RSRP or SINR, etc., because it is for the measurement and selection of the optimal spatial domain receiving filter, so , the measurement results do not need to be filtered by layer 3, that is, the measurement results of the multiple CSI-RS measurements may be layer 1 measurement results, otherwise additional time delay will be caused.
- the measurement result includes a sidelink reference signal received power RSRP and/or a sidelink signal-to-noise-interference ratio SINR.
- the method 200 may also include:
- Receive seventh indication information sent by the second terminal device where the seventh indication information is used to indicate a resource index corresponding to each received CSI-RS.
- the resource index may be an index of a CSI-RS resource.
- the second terminal device determines a CSI-RS resource set, determines a CSI-RS resource in the CSI-RS resource set, uses the same spatial domain transmission filter to transmit the multiple CSI-RS respectively, and
- the SCI indicates the index of the corresponding CSI-RS resource.
- resource pool configuration information or sideband bandwidth part BWP configuration information is used to configure A CSI-RS resource sets, and the second terminal device selects at least one CSI-RS resource set from them, and transmits the CSI-RS in at least one CSI-RS resource set, at this time, the second terminal device carries the index of the at least one CSI-RS resource set and the index of the CSI-RS resource in the SCI.
- the second terminal device uses the same airspace transmission filter to send CSI-RS in turn, which means that the second terminal device uses the same airspace transmission filter to transmit different CSI-RS resources, so
- the first terminal device uses different spatial domain receiving filters to respectively receive different CSI-RSs sent by the second terminal device, that is, the first terminal device determines the correspondence between CSI-RS resources and different spatial domain receiving filters, so The first terminal device can determine the corresponding spatial domain receiving filter according to the index of the CSI-RS resource.
- the second terminal device may indicate TCI to the first terminal device, including CSI-RS resource information and QCL Type-D, and the first terminal device may indicate the TCI according to the TCI.
- the information of the CSI-RS resource and the corresponding relationship between the CSI-RS resource and the spatial receiving filter can determine to use the spatial receiving filter corresponding to the CSI-RS resource to receive the sidelink data.
- FIG. 17 is a schematic flowchart of a wireless communication method 300 provided by an embodiment of the present application.
- the method 300 may include:
- the first terminal device sends first indication information to the second terminal device or receives second indication information sent by the second terminal device, and the first terminal device receives third indication information sent by the second terminal device.
- the second terminal device transmits different CSI-RSs to the first terminal device in turn through the same airspace transmission filter, and indicates the corresponding CSI-RS resources, and the first terminal device uses different airspace
- the receiving filters respectively receive the CSI-RS and perform measurement, and among the plurality of spatial receiving filters, determine a target spatial receiving filter for the first terminal device to receive sidelink data.
- the interaction of the first indication information to the third indication information between the second terminal device and the first terminal device may be understood as the interaction of sidewalk configuration information.
- the second terminal device may send side configuration information to the first terminal device, or the first terminal device may send side configuration information to the second terminal device; the above-mentioned various side configuration information It may be carried in one or more sideline configuration signaling, which is not limited in this embodiment.
- the method 200 and the method 300 are only examples of the present application, and only all or part of the steps in the method 200 or 300 may be included in the process of determining the target spatial domain receiving filter. One or more can be combined into one step, the application does not specifically limit this,
- the sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, and should not be used in this application.
- the implementation of the examples constitutes no limitation.
- the terms “downlink” and “uplink” are used to indicate the transmission direction of signals or data, wherein “downlink” is used to indicate that the transmission direction of signals or data is from the station to the user equipment in the cell For the first direction, “uplink” is used to indicate that the signal or data transmission direction is the second direction from the user equipment in the cell to the station, for example, “downlink signal” indicates that the signal transmission direction is the first direction.
- the term "and/or" is only an association relationship describing associated objects, indicating that there may be three relationships. Specifically, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.
- Fig. 18 is a schematic block diagram of a first terminal device 400 according to an embodiment of the present application.
- the first terminal device 400 may include:
- the receiving unit 410 is configured to use multiple spatial receiving filters to respectively receive multiple channel state information reference signals CSI-RS;
- the processing unit 420 is used for:
- a target spatial domain receiving filter for the first terminal device Based on the measurement results of the multiple CSI-RSs, among the multiple spatial domain receiving filters, determine a target spatial domain receiving filter for the first terminal device to receive sidelink data.
- the receiving unit 410 is specifically configured to:
- the multiple spatial domain receiving filters respectively receive the multiple CSI-RSs sent by the second terminal device using the same spatial domain transmitting filters.
- the receiving unit 410 is also used for:
- the first indication information is used to indicate the number of the plurality of spatial receiving filters.
- the plurality of spatial domain reception filters include a spatial domain reception filter of the first terminal device that can be used for sidelink data reception.
- the first indication information is carried in at least one of the following: Sidelink Control Information SCI, Medium Access Control Element MAC CE or PC5 Radio Resource Control RRC.
- the receiving unit 410 is also used for:
- the second indication information is used to indicate the maximum number of CSI-RS sent by the second terminal device; or the second indication information is used to indicate the CSI corresponding to the CSI-RS sent by the second terminal device - Maximum number of RS resources.
- the maximum number is greater than or equal to the number of the plurality of CSI-RSs.
- the second indication information is used to indicate the maximum number of CSI-RS resources corresponding to the CSI-RS sent by the second terminal device, including: the second indication information is used to indicate the CSI sent by the second terminal device - The number of all CSI-RS resources in the CSI-RS resource set corresponding to the RS.
- the second indication information is carried in at least one of the following: Sidelink Control Information SCI, Medium Access Control Element MAC CE or PC5 Radio Resource Control RRC.
- the receiving unit 410 is also used for:
- the third indication information is used to indicate at least one CSI-RS resource set corresponding to the multiple CSI-RSs and/or each CSI of the multiple CSI-RSs in the at least one CSI-RS resource set - the corresponding CSI-RS resource in the RS resource set.
- the third indication information includes an identifier of the at least one CSI-RS resource set and/or each CSI-RS resource of the plurality of CSI-RS in the at least one CSI-RS resource set The identifier of the corresponding CSI-RS resource in the set.
- the repetition parameter of the at least one CSI-RS resource set is set to ON.
- the reported amount associated with the at least one CSI-RS resource set is set to null.
- the third indication information is carried in at least one of the following: Sidelink Control Information SCI, Medium Access Control Element MAC CE or PC5 Radio Resource Control RRC.
- the receiving unit 410 is also used for:
- the resource pool configuration information or BWP configuration information is used to configure a CSI-RS resource set or a CSI-RS resource;
- the at least one CSI-RS resource set is determined according to the CSI-RS resource set configured by the resource pool configuration information or the BWP configuration information.
- the CSI-RS resource set configured by the resource pool configuration information or the BWP configuration information includes a first CSI-RS resource set and a second CSI-RS resource set, and the first CSI-RS resource set The repetition parameter is set to off, and the repetition parameter of the second CSI-RS resource set is set to on; the at least one CSI-RS resource set is determined according to the second CSI-RS resource set.
- the resource pool configuration information or BWP configuration information includes at least one of the following parameters:
- N The number N of time-domain symbols occupied by a CSI-RS resource, where N is an integer greater than or equal to 1;
- the CSI-RS density is used to indicate the number of REs occupied by the CSI-RS of one antenna port in one PRB.
- the CSI-RS density is less than 1, and the CSI-RS resource configuration information further includes PRB information for indicating CSI-RS resource mapping.
- the receiving unit 410 is also used for:
- the fourth indication information is used to indicate that the CSI-RS sent by the second terminal device is used to measure channel state information; or the fourth indication information is used to indicate that the CSI-RS sent by the second terminal device is used to measure channel state information; Determining a target airspace transmission filter for the second terminal device to transmit sidelink data; or the fourth indication information is used to indicate that the CSI-RS transmitted by the second terminal device is used for the first terminal device The target spatial domain receive filter is determined.
- the fourth indication information is used to indicate that the CSI-RS sent by the second terminal device is used by the first terminal device to determine the target airspace reception filter, including the fourth indication information Used to indicate at least one of the following:
- the second terminal device sends a CSI-RS for the first terminal device to determine the target spatial domain receiving filter
- the second terminal device transmits the multiple CSI-RSs using the same spatial transmission filter
- the CSI-RS resource set corresponding to the CSI-RS sent by the second terminal device is a CSI-RS resource set whose repetition parameter is set to ON;
- the reported amount associated with the CSI-RS sent by the second terminal device is set to be empty.
- the fourth indication information is carried in at least one of the following: Sidelink Control Information SCI, Medium Access Control Element MAC CE or PC5 Radio Resource Control RRC.
- the receiving unit 410 is also used for:
- the receiving unit 410 is specifically configured to:
- the measurement results of the plurality of CSI-RSs include measurement results of received CSI-RSs in the plurality of CSI-RSs.
- the fifth indication information is carried in at least one of the following: Sideline Control Information SCI, Medium Access Control Element MAC CE or PC5 Radio Resource Control RRC.
- the receiving unit 410 is also used for:
- Receive sixth indication information sent by the second terminal device where the sixth indication information is used to indicate multiple transmission resources corresponding to the multiple CSI-RSs.
- the receiving unit 410 is specifically configured to:
- the multiple CSI-RSs are received on the multiple transmission resources by using multiple spatial domain receive filters.
- the multiple transmission resources are obtained by the second terminal device through listening, or the multiple transmission resources are obtained by the second terminal device from a network device.
- the priority corresponding to the multiple CSI-RS is the highest priority.
- the first terminal device expects the second terminal device to use the multiple transmission resources to send the multiple CSI-RSs; or, the first terminal device does not expect the second terminal The device performs resource reselection on the multiple transmission resources; or, the second terminal device does not perform resource reselection on the multiple transmission resources; or, the second terminal device does not perform resource reselection on the multiple transmission resources Evaluation detection and preemption detection.
- the sixth indication information is carried in at least one of the following: Sidelink Control Information SCI, Medium Access Control Element MAC CE or PC5 Radio Resource Control RRC.
- the processing unit 420 is specifically configured to:
- the target spatial reception filter is determined.
- the processing unit 420 is specifically configured to:
- the spatial domain reception filter corresponding to the CSI-RS whose measurement result is greater than or equal to a first threshold is determined as the at least one candidate spatial domain reception filter.
- the first threshold is configured by the network device, or the first threshold is indicated by the second terminal device, or the first threshold is pre-configured.
- the processing unit 420 is specifically configured to:
- the spatial reception filter corresponding to the CSI-RS with the best measurement result is determined as the target spatial reception filter.
- the processing unit 420 is specifically configured to:
- the measurement result includes a sidelink reference signal received power RSRP and/or a sidelink signal-to-noise-interference ratio SINR.
- the receiving unit 410 is also used for:
- Receive seventh indication information sent by the second terminal device where the seventh indication information is used to indicate a resource index corresponding to each received CSI-RS.
- the receiving unit 410 is specifically configured to:
- the device embodiment and the method embodiment may correspond to each other, and similar descriptions may refer to the method embodiment.
- the first terminal device 400 shown in FIG. 18 may correspond to the corresponding subject in the method 200 or 300 of the embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the first terminal device 400 In order to realize the corresponding processes in the respective methods in FIG. 13 or FIG. 17 , for the sake of brevity, details are not repeated here.
- Fig. 19 is a schematic block diagram of a second terminal device 500 according to an embodiment of the present application.
- the second terminal device 500 may include:
- the sending unit 510 is configured to use the same spatial domain sending filter to send multiple channel state information reference signals CSI-RS to the first terminal device respectively;
- the multiple CSI-RSs are used by the first terminal device to determine a target spatial receiving filter for receiving sidelink data from a plurality of spatial receiving filters.
- the sending unit 510 is further configured to:
- the first indication information is used to indicate the number of the plurality of spatial receiving filters.
- the plurality of spatial domain reception filters include a spatial domain reception filter of the first terminal device that can be used for sidelink data reception.
- the first indication information is carried in at least one of the following: Sidelink Control Information SCI, Medium Access Control Element MAC CE or PC5 Radio Resource Control RRC.
- the sending unit 510 is further configured to:
- the second indication information is used to indicate the maximum number of CSI-RS sent by the second terminal device; or the second indication information is used to indicate the CSI-RS corresponding to the CSI-RS sent by the second terminal device The maximum number of resources.
- the maximum number is greater than or equal to the number of the plurality of CSI-RSs.
- the second indication information is used to indicate the maximum number of CSI-RS resources corresponding to the CSI-RS sent by the second terminal device, including: the second indication information is used to indicate the first The quantity of all CSI-RS resources in the CSI-RS resource set corresponding to the CSI-RS sent by the terminal device.
- the second indication information is carried in at least one of the following: Sidelink Control Information SCI, Medium Access Control Element MAC CE or PC5 Radio Resource Control RRC.
- the sending unit 510 is further configured to:
- the third indication information is used to indicate at least one CSI-RS resource set corresponding to the multiple CSI-RSs and/or each CSI of the multiple CSI-RSs in the at least one CSI-RS resource set - the corresponding CSI-RS resource in the RS resource set.
- the third indication information includes an identifier of the at least one CSI-RS resource set and/or each CSI-RS resource of the plurality of CSI-RS in the at least one CSI-RS resource set The identifier of the corresponding CSI-RS resource in the set.
- the repetition parameter of the at least one CSI-RS resource set is set to ON.
- the reported amount associated with the at least one CSI-RS resource set is set to null.
- the third indication information is carried in at least one of the following: Sidelink Control Information SCI, Medium Access Control Element MAC CE or PC5 Radio Resource Control RRC.
- the sending unit 510 is further configured to:
- the resource pool configuration information or BWP configuration information is used to configure a CSI-RS resource set or a CSI-RS resource;
- the at least one CSI-RS resource set is determined according to the CSI-RS resource set configured by the resource pool configuration information or the BWP configuration information.
- the CSI-RS resource set configured by the resource pool configuration information or the BWP configuration information includes a first CSI-RS resource set and a second CSI-RS resource set, and the first CSI-RS resource set The repetition parameter is set to off, and the repetition parameter of the second CSI-RS resource set is set to on; the at least one CSI-RS resource set is determined according to the second CSI-RS resource set.
- the resource pool configuration information or BWP configuration information includes at least one of the following parameters:
- N The number N of time-domain symbols occupied by a CSI-RS resource, where N is an integer greater than or equal to 1;
- the CSI-RS density is used to indicate the number of REs occupied by the CSI-RS of one antenna port in one PRB.
- the CSI-RS density is less than 1, and the CSI-RS resource configuration information further includes PRB information for indicating CSI-RS resource mapping.
- the sending unit 510 is further configured to:
- the fourth indication information is used to indicate that the CSI-RS sent by the second terminal device is used to measure channel state information; or the fourth indication information is used to indicate that the CSI-RS sent by the second terminal device is used to measure channel state information; Determining a target airspace transmission filter for the second terminal device to transmit sidelink data; or the fourth indication information is used to indicate that the CSI-RS transmitted by the second terminal device is used for the first terminal device The target spatial domain receive filter is determined.
- the fourth indication information is used to indicate that the CSI-RS sent by the second terminal device is used by the first terminal device to determine the target airspace reception filter, including the fourth indication information Used to indicate at least one of the following:
- the second terminal device sends a CSI-RS for the first terminal device to determine the target spatial domain receiving filter
- the second terminal device transmits the multiple CSI-RSs using the same spatial transmission filter
- the CSI-RS resource set corresponding to the CSI-RS sent by the second terminal device is a CSI-RS resource set whose repetition parameter is set to ON;
- the reported amount associated with the CSI-RS sent by the second terminal device is set to be empty.
- the fourth indication information is carried in at least one of the following: Sidelink Control Information SCI, Medium Access Control Element MAC CE or PC5 Radio Resource Control RRC.
- the sending unit 510 is further configured to:
- the sending unit 510 is specifically configured to:
- the fifth indication information is carried in at least one of the following: Sidelink Control Information SCI, Medium Access Control Element MAC CE or PC5 Radio Resource Control RRC.
- the sending unit 510 is further configured to:
- the sending unit 510 is specifically configured to:
- the multiple transmission resources are obtained by the second terminal device through listening, or the multiple transmission resources are obtained by the second terminal device from a network device.
- the priority corresponding to the multiple CSI-RS is the highest priority.
- the first terminal device expects the second terminal device to use the multiple transmission resources to send the multiple CSI-RSs; or, the first terminal device does not expect the second terminal device to Perform resource reselection on the multiple transmission resources; or, the second terminal device does not perform resource reselection on the multiple transmission resources; or, the second terminal device does not perform re-evaluation detection on the multiple transmission resources and preemption detection.
- the sixth indication information is carried in at least one of the following: Sidelink Control Information SCI, Medium Access Control Element MAC CE or PC5 Radio Resource Control RRC.
- the sending unit 510 is further configured to:
- the seventh indication information is used to indicate the resource index corresponding to the CSI-RS sent each time.
- the sending unit 510 is specifically configured to:
- the device embodiment and the method embodiment may correspond to each other, and similar descriptions may refer to the method embodiment.
- the second terminal device 500 shown in FIG. 19 may correspond to the corresponding subject in the method 200 or 300 of the embodiment of the present application, and the aforementioned and other operations and/or functions of each unit in the second terminal device 500 In order to realize the corresponding processes in the respective methods in FIG. 13 or FIG. 17 , for the sake of brevity, details are not repeated here.
- the functional modules may be implemented in the form of hardware, may also be implemented by instructions in the form of software, and may also be implemented by a combination of hardware and software modules.
- each step of the method embodiment in the embodiment of the present application can be completed by an integrated logic circuit of the hardware in the processor and/or instructions in the form of software, and the steps of the method disclosed in the embodiment of the present application can be directly embodied as hardware
- the decoding processor is executed, or the combination of hardware and software modules in the decoding processor is used to complete the execution.
- the software module may be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, and registers.
- the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps in the above method embodiments in combination with its hardware.
- the acquiring unit 310, the transmitting unit 320, and the sending unit 410 mentioned above can all be implemented by a transceiver.
- FIG. 20 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application.
- the communication device 600 may include a processor 610 .
- processor 610 may invoke and run a computer program from the memory, so as to implement the method in the embodiment of the present application.
- the communication device 600 may further include a memory 620 .
- the memory 620 may be used to store indication information, and may also be used to store codes, instructions, etc. executed by the processor 610 .
- 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 communication device 600 may further include a transceiver 630 .
- the processor 610 can control the transceiver 630 to communicate with other devices, specifically, can send information or data to other devices, or receive information or data sent by other devices.
- Transceiver 630 may include a transmitter and a receiver.
- the transceiver 630 may further include antennas, and the number of antennas may be one or more.
- bus system includes not only a data bus, but also a power bus, a control bus, and a status signal bus.
- the communication device 600 may be the first terminal device in the embodiment of the present application, and the communication device 600 may implement the corresponding procedures implemented by the first terminal device in the various methods of the embodiment of the application, that is, the The communication device 600 in the embodiment of the application may correspond to the first terminal device 400 in the embodiment of the application, and may correspond to the corresponding subject performing the method 200 or 300 according to the embodiment of the application. For the sake of brevity, no further details are given here. .
- the communication device 600 may be the second terminal device in the embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the second terminal device in each method of the embodiment of the present application.
- the communication device 600 in the embodiment of the present application may correspond to the second terminal device 500 in the embodiment of the present application, and may correspond to the corresponding subject performing the method 200 or 300 according to the embodiment of the present application.
- the communication device 600 in the embodiment of the present application may correspond to the second terminal device 500 in the embodiment of the present application, and may correspond to the corresponding subject performing the method 200 or 300 according to the embodiment of the present application.
- a chip is also provided in the embodiment of the present application.
- the chip may be an integrated circuit chip, which has signal processing capabilities, and can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.
- the chip can also be called system-on-chip, system-on-chip, system-on-chip or system-on-chip, etc.
- the chip can be applied to various communication devices, so that the communication device installed with the chip can execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.
- FIG. 21 is a schematic structural diagram of a chip 700 according to an embodiment of the present application.
- the chip 700 includes a processor 710 .
- the processor 710 can invoke and run a computer program from the memory, so as to implement the method in the embodiment of the present application.
- the chip 700 may further include a memory 720 .
- the processor 710 can invoke and run a computer program from the memory 720, so as to implement the method in the embodiment of the present application.
- the memory 720 may be used to store indication information, and may also be used to store codes, instructions, etc. executed by the processor 710 .
- the memory 720 may be an independent device independent of the processor 710 , or may be integrated in the processor 710 .
- the chip 700 may further include an input interface 730 .
- the processor 710 can control the input interface 730 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.
- the chip 700 may further include an output interface 740 .
- the processor 710 can control the output interface 740 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.
- the chip 700 can be applied to the first terminal device or the second terminal device in the embodiment of the present application, in other words, the chip can implement the corresponding process implemented by the first terminal device in each method of the embodiment of the present application, Corresponding processes implemented by the second terminal device in each method of the embodiments of the present application may also be implemented, and for the sake of brevity, details are not repeated here.
- bus system includes not only a data bus, but also a power bus, a control bus, and a status signal bus.
- Processors mentioned above may include, but are not limited to:
- DSP Digital Signal Processor
- ASIC Application Specific Integrated Circuit
- FPGA Field Programmable Gate Array
- the processor may be used to implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.
- 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 may 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 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 storage mentioned above includes but is not limited to:
- 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 double data rate synchronous dynamic random access memory
- Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
- SLDRAM synchronous connection dynamic random access memory
- Direct Rambus RAM Direct Rambus RAM
- Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.
- the computer-readable storage medium stores one or more programs, and the one or more programs include instructions.
- the portable electronic device can perform the wireless communication provided by the application. communication method.
- the computer-readable storage medium can be applied to the first terminal device in the embodiment of the present application, and the computer program causes 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 second terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the second terminal device in each method of the embodiment 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 a computer program.
- the computer program When the computer program is executed by the computer, the computer can execute the wireless communication method provided in this application.
- the computer program product can be applied to the first terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the first terminal device in each method of the embodiment of the present application.
- the computer program product can be applied to the second terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the second terminal device in each method of the embodiment of the present application.
- the embodiment of the present application also provides a computer program.
- the computer program When the computer program is executed by the computer, the computer can execute the wireless communication method provided in this application.
- the computer program can be applied to the first terminal device in the embodiment of the present application.
- the computer program runs on the computer, the computer executes the corresponding For the sake of brevity, the process will not be repeated here.
- the computer program can be applied to the second terminal device in the embodiment of the present application, and when the computer program is run on the computer, the computer executes the corresponding For the sake of brevity, the process will not be repeated here.
- An embodiment of the present application also provides a communication system, where the communication system may include the first terminal device and the second terminal device mentioned above, and details are not described here for brevity. It should be noted that the terms "system” and the like in this document may also be referred to as “network management architecture” or “network system”.
- the technical solution of the embodiment 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 to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in the embodiment of the present application.
- the aforementioned storage medium includes: various media capable of storing program codes such as U disk, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk.
- the units/modules/components described above as separate/display components may or may not be physically separated, that is, they may be located in one place, or may also be distributed to multiple network units. Part or all of the units/modules/components can be selected according to actual needs to achieve the purpose of the embodiments of the present application.
- the mutual coupling or direct coupling or communication connection shown or discussed above may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms .
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Abstract
Description
Claims (77)
- 一种无线通信方法,其特征在于,包括:使用多个空域接收滤波器分别接收多个信道状态信息参考信号CSI-RS;对所述多个CSI-RS进行测量,得到所述多个CSI-RS的测量结果;基于所述多个CSI-RS的测量结果,在所述多个空域接收滤波器中,确定用于第一终端设备进行侧行数据接收的目标空域接收滤波器。
- 根据权利要求1所述的方法,其特征在于,所述使用多个空域接收滤波器分别接收多个信道状态信息参考信号CSI-RS,包括:使用所述多个空域接收滤波器,分别接收第二终端设备使用相同的空域发送滤波器发送的所述多个CSI-RS。
- 根据权利要求1或2所述的方法,其特征在于,所述方法还包括:向第二终端设备发送第一指示信息;其中,所述第一指示信息用于指示所述多个空域接收滤波器的数量。
- 根据权利要求3所述的方法,其特征在于,所述多个空域接收滤波器包括所述第一终端设备的可用于进行侧行数据接收的空域接收滤波器。
- 根据权利要求3所述的方法,其特征在于,所述第一指示信息携带在以下中的至少一项中:侧行控制信息SCI、媒体接入控制控制元素MAC CE或PC5无线资源控制RRC。
- 根据权利要求1或2所述的方法,其特征在于,所述方法还包括:接收第二终端设备发送的第二指示信息;其中,所述第二指示信息用于指示所述第二终端设备发送的CSI-RS的最大数量;或所述第二指示信息用于指示所述第二终端设备发送的CSI-RS对应的CSI-RS资源的最大数量。
- 根据权利要求6所述的方法,其特征在于,所述最大数量大于或等于所述多个CSI-RS的数量。
- 根据权利要求6所述的方法,其特征在于,所述第二指示信息用于指示所述第二终端设备发送的CSI-RS对应的CSI-RS资源的最大数量,包括:所述第二指示信息用于指示所述第二终端设备发送的CSI-RS对应的CSI-RS资源集合中的所有CSI-RS资源的数量。
- 根据权利要求6所述的方法,其特征在于,所述第二指示信息携带在以下中的至少一项中:侧行控制信息SCI、媒体接入控制控制元素MAC CE或PC5无线资源控制RRC。
- 根据权利要求1至9中任一项所述的方法,其特征在于,所述方法还包括:接收第二终端设备发送的第三指示信息;其中,所述第三指示信息用于指示所述多个CSI-RS对应的至少一个CSI-RS资源集合和/或所述多个CSI-RS在至少一个CSI-RS资源集合中的每一个CSI-RS资源集合中对应的CSI-RS资源。
- 根据权利要求10所述的方法,其特征在于,所述第三指示信息包括所述至少一个CSI-RS资源集合的标识和/或所述多个CSI-RS在至少一个CSI-RS资源集合中的每一个CSI-RS资源集合中对应的CSI-RS资源的标识。
- 根据权利要求10所述的方法,其特征在于,所述至少一个CSI-RS资源集合的重复参数置为打开。
- 根据权利要求10所述的方法,其特征在于,所述至少一个CSI-RS资源集合关联的上报量置为空。
- 根据权利要求10所述的方法,其特征在于,所述第三指示信息携带在以下中的至少一项中:侧行控制信息SCI、媒体接入控制控制元素MAC CE或PC5无线资源控制RRC。
- 根据权利要求10至14中任一项所述的方法,其特征在于,所述方法还包括:获取资源池配置信息或侧行带宽部分BWP配置信息;其中,所述资源池配置信息或BWP配置信息用于配置CSI-RS资源集合或CSI-RS资源;根据所述资源池配置信息或BWP配置信息配置的CSI-RS资源集合确定所述至少一个CSI-RS资源集合。
- 根据权利要求15所述的方法,其特征在于,所述资源池配置信息或BWP配置信息配置的CSI-RS资源集合包括第一CSI-RS资源集合和第二CSI-RS资源集合,所述第一CSI-RS资源集合的重复参数设置为关闭,所述第二CSI-RS资源集合的重复参数置为打开;所述至少一个CSI-RS资源集合是根据所述第二CSI-RS资源集合确定的。
- 根据权利要求15所述的方法,其特征在于,所述资源池配置信息或BWP配置信息包括以下参数中的至少一项:CSI-RS资源集合的标识;CSI-RS资源集合的重复参数;CSI-RS资源的标识;CSI上报量;CSI上报配置标识;一个CSI-RS资源占据的时域符号个数N,其中,N是大于或等于1的整数;用于确定一个时隙中CSI-RS资源所在的时域符号的信息;用于确定一个物理资源块PRB内CSI-RS资源所在的资源元素RE或子载波的位置的信息;CSI-RS天线端口数;或CSI-RS密度,用于指示一个天线端口的CSI-RS在一个PRB内占用的RE个数。
- 根据权利要求17所述的方法,其特征在于,所述CSI-RS密度小于1,所述CSI-RS资源配置信息还包括用于指示用于映射CSI-RS资源的PRB信息。
- 根据权利要求1至18中任一项所述的方法,其特征在于,所述方法还包括:接收第二终端设备发送的第四指示信息;其中,所述第四指示信息用于指示第二终端设备发送的CSI-RS用于测量信道状态信息;或所述第四指示信息用于指示所述第二终端设备发送的CSI-RS用于确定用于所述第二终端设备进行侧行数据发送的目标空域发送滤波器;或所述第四指示信息用于指示所述第二终端设备发送的CSI-RS用于所述第一终端设备确定所述目标空域接收滤波器。
- 根据权利要求19所述的方法,其特征在于,所述第四指示信息用于指示所述第二终端设备发送的CSI-RS用于所述第一终端设备确定所述目标空域接收滤波器,包括所述第四指示信息用于指示以下中的至少一项:所述第二终端设备发送用于所述第一终端设备确定所述目标空域接收滤波器的CSI-RS;所述第二终端设备使用相同的空域发送滤波器发送所述多个CSI-RS;所述第二终端设备发送的CSI-RS对应的CSI-RS资源集合为重复参数置为打开的CSI-RS资源集合;或所述第二终端设备发送的CSI-RS关联的上报量置为空。
- 根据权利要求20所述的方法,其特征在于,所述第四指示信息携带在以下中的至少一项中:侧行控制信息SCI、媒体接入控制控制元素MAC CE或PC5无线资源控制RRC。
- 根据权利要求1至21中任一项所述的方法,其特征在于,所述方法包括:接收第二终端设备发送的第五指示信息,所述第五指示信息用于指示时延边界。
- 根据权利要求22所述的方法,其特征在于,所述使用多个空域接收滤波器分别接收多个信道状态信息参考信号CSI-RS,包括:在超过所述时延边界时,停止接收所述多个CSI-RS;其中,所述多个CSI-RS的测量结果包括所述多个CSI-RS中已收到的CSI-RS的测量结果。
- 根据权利要求22所述的方法,其特征在于,所述第五指示信息携带在以下中的至少一项中:侧行控制信息SCI、媒体接入控制控制元素MAC CE或PC5无线资源控制RRC。
- 根据权利要求1至24中任一项所述的方法,其特征在于,所述方法还包括:接收第二终端设备发送的第六指示信息,所述第六指示信息用于指示所述多个CSI-RS对应的多个传输资源。
- 根据权利要求25所述的方法,其特征在于,所述使用多个空域接收滤波器分别接收多个信道状态信息参考信号CSI-RS,包括:使用多个空域接收滤波器在所述多个传输资源上,接收所述多个CSI-RS。
- 根据权利要求25所述的方法,其特征在于,所述多个传输资源是第二终端设备通过侦听的方式获取的,或所述多个传输资源是所述第二终端设备从网络设备获取的。
- 根据权利要求25所述的方法,其特征在于,所述多个CSI-RS对应的优先级为最高优先级。
- 根据权利要求25所述的方法,其特征在于,所述第一终端设备期待所述第二终端设备使用所述多个传输资源发送所述多个CSI-RS;或者,所述第一终端设备不期待所述第二终端设备对所述多个传输资源进行资源重选;或者,所述第二终端设备不对所述多个传输资源进行资源重选;或者,所述第二终端设备不对所述多个传输资源进行重评估检测和抢占检测。
- 根据权利要求25所述的方法,其特征在于,所述第六指示信息携带在以下中的至少一项中:侧行控制信息SCI、媒体接入控制控制元素MAC CE或PC5无线资源控制RRC。
- 根据权利要求1至30中任一项所述的方法,其特征在于,所述基于所述多个CSI-RS的测量结 果,在所述多个空域接收滤波器中,确定用于第一终端设备进行侧行数据接收的目标空域接收滤波器,包括:基于所述多个CSI-RS的测量结果,在所述多个空域接收滤波器中,确定至少一个候选空域接收滤波器;在所述至少一个候选空域接收滤波器中,确定所述目标空域接收滤波器。
- 根据权利要求31所述的方法,其特征在于,所述基于所述多个CSI-RS的测量结果,在所述多个空域接收滤波器中,确定至少一个候选空域接收滤波器,包括:基于所述多个CSI-RS的测量结果,将测量结果大于或等于第一阈值的CSI-RS对应的空域接收滤波器,确定为所述至少一个候选空域接收滤波器。
- 根据权利要求32所述的方法,其特征在于,所述第一阈值为网络设备配置的,或所述第一阈值为第二终端设备指示的,或所述第一阈值为预配置的。
- 根据权利要求31所述的方法,其特征在于,所述在所述至少一个候选空域接收滤波器中,确定所述目标空域接收滤波器,包括:在所述至少一个候选空域接收滤波器中,根据测量结果从高到低的顺序,将具有最优测量结果的CSI-RS对应的空域接收滤波器,确定为所述目标空域接收滤波器。
- 根据权利要求1至34中任一项所述的方法,其特征在于,所述对所述多个CSI-RS进行测量,得到所述多个CSI-RS的测量结果,包括:对所述多个CSI-RS进行测量,得到所述多个CSI-RS的层1测量结果。
- 根据权利要求1至35中任一项所述的方法,其特征在于,所述测量结果包括侧行参考信号接收功率RSRP和/或侧行信号噪声干扰比SINR。
- 根据权利要求1至36中任一项所述的方法,其特征在于,所述方法还包括:接收第二终端设备发送的第七指示信息,所述第七指示信息用于指示每次接收的CSI-RS对应的资源索引。
- 根据权利要求37所述的方法,其特征在于,所述接收第二终端设备发送的第七指示信息,包括:接收所述第二终端设备发送的侧行控制信息SCI,所述SCI中包括所述第七指示信息。
- 一种无线通信方法,其特征在于,包括:使用相同的空域发送滤波器分别向第一终端设备发送多个信道状态信息参考信号CSI-RS;其中,所述多个CSI-RS用于所述第一终端设备从多个空域接收滤波器中确定用于进行侧行数据接收的目标空域接收滤波器。
- 根据权利要求39所述的方法,其特征在于,所述方法还包括:接收所述第一终端设备发送的第一指示信息;其中,所述第一指示信息用于指示所述多个空域接收滤波器的数量。
- 根据权利要求40所述的方法,其特征在于,所述多个空域接收滤波器包括所述第一终端设备的可用于进行侧行数据接收的空域接收滤波器。
- 根据权利要求40所述的方法,其特征在于,所述第一指示信息携带在以下中的至少一项中:侧行控制信息SCI、媒体接入控制控制元素MAC CE或PC5无线资源控制RRC。
- 根据权利要求39所述的方法,其特征在于,所述方法还包括:向所述第一终端设备发送第二指示信息;其中,所述第二指示信息用于指示第二终端设备发送的CSI-RS的最大数量;或所述第二指示信息用于指示所述第二终端设备发送的CSI-RS对应的CSI-RS资源的最大数量。
- 根据权利要求43所述的方法,其特征在于,所述最大数量大于或等于所述多个CSI-RS的数量。
- 根据权利要求43所述的方法,其特征在于,所述第二指示信息用于指示所述第二终端设备发送的CSI-RS对应的CSI-RS资源的最大数量,包括:所述第二指示信息用于指示所述第二终端设备发送的CSI-RS对应的CSI-RS资源集合中的所有CSI-RS资源的数量。
- 根据权利要求43所述的方法,其特征在于,所述第二指示信息携带在以下中的至少一项中:侧行控制信息SCI、媒体接入控制控制元素MAC CE或PC5无线资源控制RRC。
- 根据权利要求39至46中任一项所述的方法,其特征在于,所述方法还包括:向所述第一终端设备发送第三指示信息;其中,所述第三指示信息用于指示所述多个CSI-RS对应的至少一个CSI-RS资源集合和/或所述多个CSI-RS在至少一个CSI-RS资源集合中的每一个CSI-RS资源集合中对应的CSI-RS资源。
- 根据权利要求47所述的方法,其特征在于,所述第三指示信息包括所述至少一个CSI-RS资源 集合的标识和/或所述多个CSI-RS在至少一个CSI-RS资源集合中的每一个CSI-RS资源集合中对应的CSI-RS资源的标识。
- 根据权利要求47所述的方法,其特征在于,所述至少一个CSI-RS资源集合的重复参数置为打开。
- 根据权利要求47所述的方法,其特征在于,所述至少一个CSI-RS资源集合关联的上报量置为空。
- 根据权利要求47所述的方法,其特征在于,所述第三指示信息携带在以下中的至少一项中:侧行控制信息SCI、媒体接入控制控制元素MAC CE或PC5无线资源控制RRC。
- 根据权利要求47至51中任一项所述的方法,其特征在于,所述方法还包括:获取资源池配置信息或侧行带宽部分BWP配置信息;其中,所述资源池配置信息或BWP配置信息用于配置CSI-RS资源集合或CSI-RS资源;根据所述资源池配置信息或BWP配置信息配置的CSI-RS资源集合确定所述至少一个CSI-RS资源集合。
- 根据权利要求52所述的方法,其特征在于,所述资源池配置信息或BWP配置信息配置的CSI-RS资源集合包括第一CSI-RS资源集合和第二CSI-RS资源集合,所述第一CSI-RS资源集合的重复参数设置为关闭,所述第二CSI-RS资源集合的重复参数置为打开;所述至少一个CSI-RS资源集合是根据所述第二CSI-RS资源集合确定的。
- 根据权利要求52所述的方法,其特征在于,所述资源池配置信息或BWP配置信息包括以下参数中的至少一项:CSI-RS资源集合的标识;CSI-RS资源集合的重复参数;CSI-RS资源的标识;CSI上报量;CSI上报配置标识;一个CSI-RS资源占据的时域符号个数N,其中,N是大于或等于1的整数;用于确定一个时隙中CSI-RS资源所在的时域符号的信息;用于确定一个物理资源块PRB内CSI-RS资源所在的资源元素RE或子载波的位置的信息;CSI-RS天线端口数;或CSI-RS密度,用于指示一个天线端口的CSI-RS在一个PRB内占用的RE个数。
- 根据权利要求54所述的方法,其特征在于,所述CSI-RS密度小于1,所述CSI-RS资源配置信息还包括用于指示用于映射CSI-RS资源的PRB信息。
- 根据权利要求39至55中任一项所述的方法,其特征在于,所述方法还包括:向所述第一终端设备发送第四指示信息;其中,所述第四指示信息用于指示第二终端设备发送的CSI-RS用于测量信道状态信息;或所述第四指示信息用于指示所述第二终端设备发送的CSI-RS用于确定用于所述第二终端设备进行侧行数据发送的目标空域发送滤波器;或所述第四指示信息用于指示所述第二终端设备发送的CSI-RS用于所述第一终端设备确定所述目标空域接收滤波器。
- 根据权利要求56所述的方法,其特征在于,所述第四指示信息用于指示所述第二终端设备发送的CSI-RS用于所述第一终端设备确定所述目标空域接收滤波器,包括所述第四指示信息用于指示以下中的至少一项:所述第二终端设备发送用于所述第一终端设备确定所述目标空域接收滤波器的CSI-RS;所述第二终端设备使用相同的空域发送滤波器发送所述多个CSI-RS;所述第二终端设备发送的CSI-RS对应的CSI-RS资源集合为重复参数置为打开的CSI-RS资源集合;或所述第二终端设备发送的CSI-RS关联的上报量置为空。
- 根据权利要求57所述的方法,其特征在于,所述第四指示信息携带在以下中的至少一项中:侧行控制信息SCI、媒体接入控制控制元素MAC CE或PC5无线资源控制RRC。
- 根据权利要求39至58中任一项所述的方法,其特征在于,所述方法包括:向所述第一终端设备发送第五指示信息,所述第五指示信息用于指示时延边界。
- 根据权利要求59所述的方法,其特征在于,所述使用相同的空域发送滤波器分别向第一终端设备发送多个信道状态信息参考信号CSI-RS,包括:在超过所述时延边界时,停止发送所述多个CSI-RS。
- 根据权利要求59所述的方法,其特征在于,所述第五指示信息携带在以下中的至少一项中:侧行控制信息SCI、媒体接入控制控制元素MAC CE或PC5无线资源控制RRC。
- 根据权利要求39至61中任一项所述的方法,其特征在于,所述方法还包括:向所述第一终端设备发送第六指示信息,所述第六指示信息用于指示所述多个CSI-RS对应的多个传输资源。
- 根据权利要求62所述的方法,其特征在于,所述使用相同的空域发送滤波器分别向第一终端设备发送多个信道状态信息参考信号CSI-RS,包括:使用相同的空域发送滤波器在所述多个传输资源上,发送所述多个CSI-RS。
- 根据权利要求62所述的方法,其特征在于,所述多个传输资源是第二终端设备通过侦听的方式获取的,或所述多个传输资源是所述第二终端设备从网络设备获取的。
- 根据权利要求62所述的方法,其特征在于,所述多个CSI-RS对应的优先级为最高优先级。
- 根据权利要求62所述的方法,其特征在于,所述第一终端设备期待第二终端设备使用所述多个传输资源发送所述多个CSI-RS;或者,所述第一终端设备不期待所述第二终端设备对所述多个传输资源进行资源重选;或者,所述第二终端设备不对所述多个传输资源进行资源重选;或者,所述第二终端设备不对所述多个传输资源进行重评估检测和抢占检测。
- 根据权利要求62所述的方法,其特征在于,所述第六指示信息携带在以下中的至少一项中:侧行控制信息SCI、媒体接入控制控制元素MAC CE或PC5无线资源控制RRC。
- 根据权利要求39至67中任一项所述的方法,其特征在于,所述方法还包括:向所述第一终端设备发送第七指示信息,所述第七指示信息用于指示每次发送的CSI-RS对应的资源索引。
- 根据权利要求68所述的方法,其特征在于,所述向所述第一终端设备发送第七指示信息,包括:向所述第一终端设备发送侧行控制信息SCI,所述SCI中包括所述第七指示信息。
- 一种第一终端设备,其特征在于,包括:接收单元,用于使用多个空域接收滤波器分别接收多个信道状态信息参考信号CSI-RS;处理单元,用于:对所述多个CSI-RS进行测量,得到所述多个CSI-RS的测量结果;基于所述多个CSI-RS的测量结果,在所述多个空域接收滤波器中,确定用于第一终端设备进行侧行数据接收的目标空域接收滤波器。
- 一种第二终端设备,其特征在于,包括:发送单元,用于使用相同的空域发送滤波器分别向第一终端设备发送多个信道状态信息参考信号CSI-RS;其中,所述多个CSI-RS用于所述第一终端设备从多个空域接收滤波器中确定用于进行侧行数据接收的目标空域接收滤波器。
- 一种终端设备,其特征在于,包括:处理器和存储器,所述存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,以执行权利要求1至38中任一项所述的方法。
- 一种网络设备,其特征在于,包括:处理器和存储器,所述存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,以执行权利要求39至69中任一项所述的方法。
- 一种芯片,其特征在于,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求1至38中任一项所述的方法或如权利要求39至69中任一项所述的方法。
- 一种计算机可读存储介质,其特征在于,用于存储计算机程序,所述计算机程序使得计算机执行如权利要求1至38中任一项所述的方法或如权利要求39至69中任一项所述的方法。
- 一种计算机程序产品,其特征在于,包括计算机程序指令,所述计算机程序指令使得计算机执行如权利要求1至38中任一项所述的方法或如权利要求39至69中任一项所述的方法。
- 一种计算机程序,其特征在于,所述计算机程序使得计算机执行如权利要求1至38中任一项所述的方法或如权利要求39至69中任一项所述的方法。
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