WO2023019465A1 - 无线通信的方法和终端设备 - Google Patents
无线通信的方法和终端设备 Download PDFInfo
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- WO2023019465A1 WO2023019465A1 PCT/CN2021/113220 CN2021113220W WO2023019465A1 WO 2023019465 A1 WO2023019465 A1 WO 2023019465A1 CN 2021113220 W CN2021113220 W CN 2021113220W WO 2023019465 A1 WO2023019465 A1 WO 2023019465A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
- H04B7/06952—Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
- H04L5/0033—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation each allocating device acting autonomously, i.e. without negotiation with other allocating devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
Definitions
- the embodiments of the present application relate to the communication field, and more specifically, relate to a wireless communication method and a terminal device.
- Embodiments of the present application provide a wireless communication method and terminal equipment capable of selecting an optimal airspace transmission filter between a transmitting terminal terminal and a receiving terminal terminal.
- a wireless communication method includes:
- the first terminal device sends M CSI-RSs to the second terminal device by using the airspace transmission filter, and the M CSI-RSs are used to select a target airspace transmission filter;
- the M CSI-RSs correspond to multiple CSI-RS resources in the target CSI-RS resource set, and M is a positive integer.
- a wireless communication method in a second aspect, includes:
- the second terminal device receives M CSI-RSs sent by the first terminal device using a spatial transmission filter, where the M CSI-RSs are used to select a target spatial transmission filter, and the M CSI-RSs correspond to the target CSI-RS Multiple CSI-RS resources in the resource set, M is a positive integer.
- a terminal device configured to execute the method in the first aspect above.
- the terminal device includes a functional module for executing the method in the first aspect above.
- a terminal device configured to execute the method in the second aspect above.
- the terminal device includes a functional module for executing the method in the second aspect above.
- a terminal device including a processor and a memory.
- the memory is used to store a computer program
- the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect above.
- a terminal device including a processor and a memory.
- the memory is used to store a computer program
- the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect above.
- an apparatus for implementing the method in any one of the first aspect to the second aspect above.
- the device includes: a processor, configured to invoke and run a computer program from the memory, so that the device installed with the device executes the method in any one of the above first to second aspects.
- a computer-readable storage medium for storing a computer program, and the computer program causes a computer to execute the method in any one of the above-mentioned first aspect to the second aspect.
- a computer program product including computer program instructions, the computer program instructions causing a computer to execute the method in any one of the above first to second aspects.
- a computer program which, when running on a computer, causes the computer to execute the method in any one of the above first to second aspects.
- FIG. 1 is a schematic diagram of a communication system architecture applied in an embodiment of the present application.
- Fig. 2 is a schematic diagram of another communication system architecture applied in the embodiment of the present application.
- Fig. 3 is a schematic diagram of uplink communication within a network coverage provided by the present application.
- Fig. 4 is a schematic diagram of partial network coverage side communication provided by the present application.
- Fig. 5 is a schematic diagram of outbound communication provided by the network coverage provided by the present application.
- Fig. 6 is a schematic diagram of a side communication with a central control node provided by the present application.
- Fig. 7 is a schematic diagram of unicast sidelink communication provided by the present application.
- Fig. 8 is a schematic diagram of multicast sideline communication provided by the present application.
- Fig. 9 is a schematic diagram of broadcast sideline communication provided by the present application.
- Fig. 10 is a schematic diagram of a time slot structure in NR-V2X provided by the present application.
- Fig. 11 is a schematic diagram of not using analog beams and using analog beams according to the present application.
- FIG. 12 is a schematic diagram of a TCI state for configuring a PDSCH provided by the present application.
- Fig. 13 is a schematic flowchart of a wireless communication method provided according to an embodiment of the present application.
- Fig. 14 is a schematic diagram of a spatial domain transmission filter provided according to an embodiment of the present application.
- Fig. 15 is a schematic diagram of sending a CSI-RS using a spatial domain sending filter according to an embodiment of the present application.
- 16 to 21 are respectively schematic diagrams of contents included in the first information provided according to the embodiments of the present application.
- FIG. 22 is a schematic diagram of a MAC CE carrying first information according to an embodiment of the present application.
- FIG. 23 is a schematic diagram of another MAC CE carrying first information according to an embodiment of the present application.
- Fig. 24 is a schematic flowchart of determining an optimal spatial domain transmission filter according to an embodiment of the present application.
- Fig. 25 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.
- Fig. 26 is a schematic block diagram of another terminal device provided according to an embodiment of the present application.
- Fig. 27 is a schematic block diagram of a communication device provided according to an embodiment of the present application.
- Fig. 28 is a schematic block diagram of a device provided according to an embodiment of the present application.
- Fig. 29 is a schematic block diagram of a communication system provided according to an embodiment of the present application.
- the technical solution of the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.
- GSM Global System of Mobile
- D2D Device to Device
- M2M Machine to Machine
- MTC Machine Type Communication
- V2V Vehicle to Vehicle
- V2X Vehicle to everything
- the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, may also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and may also be applied to an independent (Standalone, SA) deployment Web scene.
- Carrier Aggregation, CA Carrier Aggregation
- DC Dual Connectivity
- SA independent deployment Web scene
- the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered as non-shared spectrum.
- the embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, wherein the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
- user equipment User Equipment, UE
- access terminal user unit
- user station mobile station
- mobile station mobile station
- remote station remote terminal
- mobile device user terminal
- terminal wireless communication device
- wireless communication device user agent or user device
- the terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.
- PLMN Public Land Mobile Network
- the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites) superior).
- the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
- a virtual reality (Virtual Reality, VR) terminal device an augmented reality (Augmented Reality, AR) terminal Equipment
- wireless terminal equipment in industrial control wireless terminal equipment in self driving
- wireless terminal equipment in remote medical wireless terminal equipment in smart grid
- wireless terminal equipment in transportation safety wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
- the terminal device may also be a wearable device.
- Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
- a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
- Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
- the network device may be a device for communicating with the mobile device, and the network device may be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA , or a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network A network device or a base station (gNB) in a network device or a network device in a future evolved PLMN network or a network device in an NTN network.
- AP Access Point
- BTS Base Transceiver Station
- NodeB, NB base station
- Evolutional Node B, eNB or eNodeB evolved base station
- LTE Long Term Evolution
- eNB evolved base station
- gNB base station
- the network device may have a mobile feature, for example, the network device may be a mobile device.
- the network equipment may be a satellite or a balloon station.
- the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc.
- the network device may also be a base station installed on land, water, and other locations.
- the network device may provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, a cell corresponding to a base station), the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell), and the small cell here may include: a metro cell (Metro cell), a micro cell (Micro cell), a pico cell ( Pico cell), Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
- the transmission resources for example, frequency domain resources, or spectrum resources
- the cell may be a network device (
- the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell)
- the small cell here may include: a metro cell (Metro cell), a micro cell (Micro
- the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
- a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
- the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.
- predefined or “preconfigured” can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices).
- the application does not limit its specific implementation.
- pre-defined may refer to defined in the protocol.
- the "protocol” may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, which is not limited in the present application.
- Fig. 1 is a schematic diagram of a communication system to which the embodiment of the present application is applicable.
- the transmission resources of the vehicle-mounted terminals (vehicle-mounted terminal 121 and vehicle-mounted terminal 122 ) are allocated by the base station 110 , and the vehicle-mounted terminals transmit data on the sidelink according to the resources allocated by the base station 110 .
- the base station 110 may allocate resources for a single transmission to the terminal, or may allocate resources for semi-static transmission to the terminal.
- Fig. 2 is a schematic diagram of another communication system to which the embodiment of the present application is applicable.
- the vehicle-mounted terminals (vehicle-mounted terminal 131 and vehicle-mounted terminal 132 ) autonomously select transmission resources on sidelink resources for data transmission.
- the vehicle-mounted terminal may select transmission resources randomly, or select transmission resources by listening.
- side communication according to the network coverage of the communicating terminal, it can be divided into network coverage inner communication, as shown in Figure 3; part of the network coverage side communication, as shown in Figure 4 ; and network coverage outer line communication, as shown in FIG. 5 .
- Figure 3 In inline communication within the network coverage, all terminals performing sideline communication are within the coverage of the base station. Therefore, the above-mentioned terminals can perform sideline communication based on the same sideline configuration by receiving configuration signaling from the base station .
- FIG 4 In the case of partial network coverage for sidelink communication, some terminals performing sidelink communication are located within the coverage of the base station. These terminals can receive configuration signaling from the base station and perform sidelink communication according to the configuration of the base station. However, terminals located outside the network coverage cannot receive the configuration signaling from the base station. In this case, the terminals outside the network coverage will use the pre-configuration information and the physical The information carried in the Physical Sidelink Broadcast Channel (PSBCH) determines the sidelink configuration for sidelink communication.
- PSBCH Physical Sidelink Broadcast Channel
- Figure 5 For outbound communication under network coverage, all terminals performing side communication are located outside the network coverage, and all terminals determine side communication according to pre-configuration information to perform side communication.
- FIG. 6 For side communication with a central control node, multiple terminals form a communication group.
- a central control node in the communication group which can also be called a cluster head terminal (Cluster Header, CH).
- the central control node has the following One of the functions: responsible for the establishment of communication groups; joining and leaving of group members; performing resource coordination, allocating side transmission resources for other terminals, receiving side communication feedback information from other terminals; performing resource coordination with other communication groups, etc.
- device-to-device communication is based on a sidelink (Sidelink, SL) transmission technology based on device to device (D2D), and the communication data in the traditional cellular system is received or sent through the base station.
- the method is different.
- the Internet of Vehicles system adopts the method of terminal-to-terminal direct communication, so it has higher spectral efficiency and lower transmission delay.
- Two transmission modes are defined in 3GPP, which are respectively recorded as: the first mode (sidelink resource allocation mode 1) and the second mode (sidelink resource allocation mode 2).
- the first mode the transmission resources of the terminal are allocated by the base station, and the terminal sends data on the sidelink according to the resources allocated by the base station; the base station can allocate resources for a single transmission to the terminal, and can also allocate semi-static transmission to the terminal H. As shown in FIG. 3 , the terminal is located within the coverage of the network, and the network allocates transmission resources for sidelink transmission to the terminal.
- the second mode the terminal selects a resource from the resource pool for data transmission.
- the terminal is located outside the coverage of the cell, and the terminal independently selects transmission resources from the pre-configured resource pool for sidelink transmission; or, as shown in Figure 3, the terminal independently selects transmission resources from the resource pool configured by the network Make sideways transfers.
- New Radio-Vehicle to Everything NR-V2X
- NR-V2X New Radio-Vehicle to Everything
- it supports automatic driving, so it puts forward higher requirements for data interaction between vehicles, such as higher throughput, lower Latency, higher reliability, larger coverage, more flexible resource allocation, etc.
- unicast transmission there is only one terminal at the receiving end, as shown in Figure 7, unicast transmission is performed between UE1 and UE2; for multicast transmission, the receiving end is all terminals in a communication group, or in a certain All terminals within the transmission distance, as shown in Figure 8, UE1, UE2, UE3, and UE4 form a communication group, in which UE1 sends data, and other terminal devices in the group are receiving end terminals; for broadcast transmission mode, its receiving The terminal is any terminal around the transmitting terminal. As shown in FIG. 9 , UE1 is the transmitting terminal, and other terminals around it, UE2-UE6 are all receiving terminals.
- the time slot structure in NR-V2X is shown in Figure 10.
- (a) in Figure 10 indicates that the time slot does not include the physical sidelink feedback channel (Physical Sidelink Feedback Channel, PSFCH) time slot structure; the diagram in Figure 10 ( b) shows the slot structure including PSFCH.
- PSFCH Physical Sidelink Feedback Channel
- the Physical Sidelink Control Channel starts from the second sidelink symbol of the time slot in the time domain and occupies 2 or 3 Orthogonal frequency division multiplexing (Orthogonal frequency- division multiplexing (OFDM) symbols can occupy ⁇ 10, 12 15, 20, 25 ⁇ physical resource blocks (physical resource blocks, PRBs) in the frequency domain.
- Orthogonal frequency division multiplexing Orthogonal frequency division multiplexing (Orthogonal frequency- division multiplexing (OFDM) symbols can occupy ⁇ 10, 12 15, 20, 25 ⁇ physical resource blocks (physical resource blocks, PRBs) in the frequency domain.
- OFDM Orthogonal frequency division multiplexing
- the number of PRBs occupied by PSCCH must be less than or equal to the number of PRBs contained in a sub-channel in the resource pool , so as not to impose additional restrictions on PSSCH resource selection or allocation.
- the PSSCH also starts from the second side row symbol of the time slot, the last time domain symbol in the time slot is a guard interval (Guard Period, GP) symbol, and the remaining symbols are mapped to the PSSCH.
- the first side row symbol in this time slot is the repetition of the second side row symbol.
- the receiving terminal uses the first side row symbol as an automatic gain control (AGC) symbol. Data is generally not used for data demodulation.
- the PSSCH occupies M subchannels in the frequency domain, and each subchannel includes N consecutive PRBs. As shown in (a) in Figure 10.
- the second-to-last 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, as shown in (b) in Figure 10 shown.
- Design goals for NR or 5G systems include large-bandwidth communications in high-frequency bands, such as frequency bands above 6 GHz. When the operating frequency becomes higher, the path loss in the transmission process will increase, thereby affecting the coverage capability of the high-frequency system.
- an effective technical solution is based on a massive antenna array (Massive MIMO) to form a shaped beam with greater gain, overcome propagation loss, and ensure system coverage.
- Mass MIMO massive antenna array
- the millimeter-wave antenna array due to the shorter wavelength, smaller antenna element spacing and smaller aperture, allows more physical antenna elements to be integrated in a limited-sized two-dimensional antenna array.
- Due to the limited size of the millimeter-wave antenna array from Considering factors such as hardware complexity, cost overhead, and power consumption, digital beamforming cannot be used, but analog beamforming is usually used, which can reduce the complexity of device implementation while enhancing network coverage.
- a cell uses a wider beam (beam) to cover the entire cell. Therefore, at each moment, the terminal equipment within the coverage of the cell has the opportunity to obtain the transmission resources allocated by the system.
- NR/5G multi-beam (Multi-beam) system covers the entire cell through different beams, that is, each beam covers a small range, and the effect of multiple beams covering the entire cell is achieved through time sweeping (sweeping) .
- Fig. 11 shows schematic diagrams of systems without beamforming and with beamforming.
- (a) in Figure 11 is a traditional LTE and NR system without beamforming, and
- (b) in Figure 11 is an NR system using beamforming:
- the LTE/NR network side uses a wide beam to cover the entire cell, and users 1-5 can receive network signals at any time.
- the network side in (b) in Figure 11 uses narrower beams (such as beams 1-4 in the figure), and uses different beams to cover different areas in the cell at different times, for example, at time 1,
- the NR network side covers the area where user 1 is located through beam 1; at time 2, the NR network side covers the area where user 2 is located through beam 2; at time 3, the NR network side covers the area where user 3 and user 4 are located through beam 3; At time 4, the NR network side uses beam 4 to cover the area where user 5 is located.
- Analog beamforming can be used not only for network-side devices, but also for terminals. At the same time, analog beamforming can not only be used for signal transmission (called transmit beam), but also can be used for signal reception (called receive beam).
- SS block Synchronization Signal block
- CSI-RS Channel State Information Reference Signal
- the physical downlink control channel Physical Downlink Control Channel, PDCCH
- the physical downlink shared channel Physical Downlink Shared Channel, PDSCH
- omnidirectional antennas or near-omnidirectional antennas are used to receive signals sent by different downlink transmission beams of the base station.
- corresponding beam indication information (beam indication) is needed to assist the terminal device to determine the related information of the transmitting beam on the network side, or the corresponding receiving beam related information on the terminal side.
- the beam indication information does not directly indicate the beam itself, but through the quasi-co-located (QCL) assumption between signals (such as the QCL assumption of QCL type "QCL-TypeD") to give instructions.
- QCL quasi-co-located
- determining the statistical characteristics of receiving corresponding channels/signals is also based on the QCL quasi-co-location assumption.
- the characteristics of the transmission environment corresponding to the data transmission can be used to improve the reception algorithm.
- the statistical properties of the channel can be used to optimize the design and parameters of the channel estimator.
- these characteristics corresponding to data transmission are represented by QCL status (QCL-Info).
- TRP Transmission Reception Point
- panel panel
- beam beam
- TCI Transmission Configuration Indicator
- a TCI state can contain the following configurations:
- TCI state identifier used to identify a TCI state
- a QCL information contains the following information:
- QCL type (type) configuration which can be one of QCL type A, QCL typeB, QCL typeC or QCL typeD;
- QCL reference signal configuration including the cell identification (ID) where the reference signal is located, the bandwidth part (Band Width Part, BWP) identification (ID) and the identification of the reference signal (which can be a CSI-RS resource identification or a synchronization signal block (Synchronization Signal Block) , SSB) index).
- the QCL type of at least one QCL information must be one of typeA, typeB, and typeC, and the QCL type of the other QCL information must be QCL type D.
- 'QCL-TypeA' ⁇ Doppler shift (Doppler shift), Doppler spread (Doppler spread), average delay (average delay), delay spread (delay spread) ⁇ ;
- 'QCL-TypeB' ⁇ Doppler shift (Doppler shift), Doppler spread (Doppler spread) ⁇ ;
- 'QCL-TypeC' ⁇ Doppler shift (Doppler shift), average delay (average delay) ⁇ ;
- the network side can indicate the corresponding TCI state for the downlink signal or downlink channel.
- the terminal can assume that the target downlink signal is consistent with the reference
- the large-scale parameters of the SSB or reference CSI-RS resources are the same, and the large-scale parameters are determined by the QCL type configuration.
- the terminal can adopt and receive the reference SSB or reference CSI-RS resource.
- the receiving beam that is, the Spatial Rx parameter
- the target downlink channel (or downlink signal) and its reference SSB or reference CSI-RS resource are sent by the same TRP or the same panel or the same beam at the network side. If the transmission TRP or transmission panel or transmission beam of two downlink signals or downlink channels are different, different TCI states are usually configured.
- control resource set (Control Resource Set, CORESET) TCI status.
- the available TCI state set is indicated by RRC signaling, and some of the TCI states are activated by MAC layer signaling, and finally activated by the TCI state indication field in the downlink control information (Downlink Control Information, DCI)
- DCI Downlink Control Information
- One or two TCI states are indicated in the TCI state for the PDSCH scheduled by the DCI.
- the case of two TCI states is mainly for scenarios where multiple TRPs are similar.
- the network device indicates N candidate TCI states through RRC signaling, activates K TCI states through MAC signaling, and finally indicates 1 from the activated TCI states through the TCI state indication field in DCI One or two TCI states to use.
- the present application proposes a solution for determining the optimal airspace transmission filter for lateral communication, which can determine the optimal airspace transmission filter between the transmitting end terminal and the receiving end terminal.
- FIG. 13 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG. 13 , the wireless communication method 200 may include at least part of the following content:
- the first terminal device sends M CSI-RSs to the second terminal device using the airspace transmission filter, and the M CSI-RSs are used to select the target airspace transmission filter; wherein, the M CSI-RSs correspond to the target CSI-RS Multiple CSI-RS resources in the RS resource set, M is a positive integer;
- the second terminal device receives the M CSI-RSs transmitted by the first terminal device using a spatial domain transmission filter.
- the second terminal device measures the received CSI-RS and obtains the measurement result, and the second terminal device can feed back the CSI-RS resource according to the measurement result, so that the first terminal device can Select the target airspace send filter.
- the millimeter wave frequency band is used in the sidelink transmission system.
- Line transmission In order to increase the transmission rate of the sidelink communication system, the millimeter wave frequency band is used in the sidelink transmission system.
- the first terminal device is a sending end device
- the second terminal device is a receiving end device
- the CSI-RSs in the M CSI-RSs are side row CSI-RSs.
- the M CSI-RSs may also be replaced by other sidelink signals, that is, in the above S210, the first terminal device may send M sidelink signals to the second terminal device using an airspace transmission filter , wherein the M side-going signals are used to select a target airspace transmit filter.
- the side signals in the M 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 positioning reference signals
- phase tracking reference signal Phase Tracking Reference Signal
- PT-RS Phase Tracking Reference Signal
- sidewalk Synchronization signals including side-line primary synchronization signals and/or side-line secondary synchronization signals.
- sending M CSI-RSs may also be expressed as “sending M CSI-RS resources", which is not limited in this application.
- a spatial domain transmission filter may also be referred to as a transmission beam, a spatial relation, or a spatial setting.
- the spatial domain transmit filter and the spatial domain receive filter are collectively referred to as a spatial domain filter
- the spatial domain transmit filter may also be referred to as a transmitting end spatial domain filter
- the spatial domain receiving filter may also be referred to as a receiving end spatial domain filter or a receiving end spatial domain filter. beam.
- the receiving end uses the same spatial domain reception filter (spatial domain reception filter) to receive the M CSI-RSs sent by the transmitting end.
- each CSI-RS in the M CSI-RS corresponds to a CSI-RS resource in the target CSI-RS resource set
- the M CSI-RS corresponds to the target CSI-RS resource set
- the multiple CSI-RS resources in may refer to: the CSI-RS resources corresponding to the M CSI-RS are different in pairs, that is, the M CSI-RS and multiple CSI-RS resources are in one-to-one correspondence; or, the Among the M CSI-RSs, there are at least two CSI-RSs corresponding to different CSI-RS resources. That is, the first terminal device transmits at least two CSI-RS resources by using the spatial domain transmission filter.
- the first terminal device sending the M CSI-RSs to the second terminal device using a spatial domain transmission filter may refer to: the first terminal device transmits the M CSI-RSs using different spatial domain transmission filters, For example, the M CSI-RSs correspond to different transmission beams respectively; or, the first terminal device does not use the same spatial domain transmission filter to transmit the M CSI-RSs, for example, the M CSI-RSs are transmitted using at least two different transmit beams.
- the above S210 may specifically include:
- the first terminal device sends M CSI-RSs to the second terminal device by using the M spatial transmission filters, where each spatial transmission filter corresponds to one CSI-RS.
- the above S210 may specifically include:
- the first terminal device transmits M CSI-RSs to the second terminal device using K spatial transmission filters, where K is less than M and K is greater than 1, that is, there are at least two CSI-RSs among the M CSI-RSs are transmitted through different spatial domain transmit filters.
- the terminal device may use a beam for sidelink data transmission.
- the transmitting terminal may determine a transmitting beam suitable for the receiving terminal to improve sidelink transmission performance.
- the first terminal device when used as the transmitting terminal, it can transmit the side-going reference signal through different transmitting beams.
- the receiving-end terminal can measure the side-going reference signal sent by the transmitting terminal, and select the optimal measurement result corresponding to The optimal transmission beam is further fed back to the transmitting terminal, so that the transmitting terminal performs subsequent sidelink transmission according to the optimal transmitting beam fed back by the receiving terminal, thereby improving transmission performance.
- there is a corresponding relationship between the transmission beam and the reference signal resource The receiving end selects the transmission beam corresponding to the optimal measurement result, and feeds back the reference signal resource information corresponding to the transmission beam to the transmitting end. The resource information and the corresponding relationship can determine the optimal transmission beam.
- the corresponding repetition (repetition) field in the configuration information of the target CSI-RS resource set takes a first value, where the first value is used to indicate that the first terminal device does not use the same airspace transmission filter
- the device transmits the CSI-RS resources in the target CSI-RS resource set, in other words, the first value is used to instruct the first terminal device to use different spatial domain transmission filters to transmit the CSI-RS resources in the target CSI-RS resource set resource.
- the first value may be off (off), indicating that the first terminal device transmits the M CSI-RSs for selecting a target airspace transmission filter.
- the first terminal device uses M different spatial domain transmission filters to transmit M CSI-RS resources, that is, different CSI-RS resources correspond to different spatial domain filters.
- the first terminal device uses M1 different spatial domain transmission filters to transmit M CSI-RS resources, where M1 ⁇ M; that is, the same spatial domain transmission filter can be used to transmit different CSI-RS resources.
- the M CSI-RS resources correspond to M CSI-RS resources in the CSI-RS resource set, further, the M CSI-RS are different CSI-RS resources;
- the M CSI-RS resources correspond to M2 CSI-RS resources in the CSI-RS resource set, M2 ⁇ M; further, the M CSI-RS may include the same CSI-RS resources .
- the first terminal device receives the first information sent by the second terminal device
- the first information includes a target channel state information (Channel State Information, CSI) report quantity (reportQuantity), and the target CSI report quantity includes at least one of the following:
- CSI-RS Resource Indicator CRI
- CRI and Reference Signal Received Power Reference Signal Received Power
- RSRP Reference Signal Received Power
- 'CRI-RSRP' CRI and Signal to Interference plus Noise Ratio ,SINR
- the CRI may be an index of a CSI-RS resource, that is, when the target CSI reporting amount includes CRI, the second terminal device may only feed back the index of a CSI-RS resource; in the target CSI When the reported amount includes CRI-RSRP, the second terminal device may feed back the CSI-RS resource index and RSRP; when the target CSI reported amount includes CRI-SINR, the second terminal device may feed back CSI-RS The index and SINR of the resource.
- the target CSI reporting amount may be determined by the second terminal device according to a measurement result obtained by measuring the received CSI-RS.
- the measurement results (including RSRP and/or SINR) in this application are obtained based on the measurement of CSI-RS.
- the measurement result is obtained based on the measurement of PSCCH DRMS, PSSCH DMRS or sideline PT-RS.
- the CSI-RS sent by the sender is carried in the PSSCH, that is, the CSI-RS is mapped in the resources of the PSSCH, the PSSCH is scheduled through the SCI, and the transmission of the CSI-RS is indicated.
- the receiver can perform measurements based on PSCCH DMRS or PSSCH DMRS. That is, the CSI-RS resources may also be determined based on the measurement results of the PSCCH DMRS or PSSCH DMRS associated with the CSI-RS.
- the sending end indicates to send the CSI-RS through the indication information
- the receiving end measures the PSCCH DMRS or PSSCH DMRS associated with the CSI-RS
- the measurement result is PSCCH-RSRP or PSSCH-RSRP, based on the measurement result Determine the CSI-RS resource, and send the CSI-RS resource index, or the CSI-RS resource index and its associated measurement results (ie, PSCCH-RSRP or PSSCH-RSRP) to the sender to assist the sender in selecting the airspace transmission filter device.
- the measurement results obtained based on CSI-RS are taken as an example for illustration, and the embodiments of the present invention are also applicable to the measurement results obtained based on PSCCH DMRS or PSSCH DMRS Condition.
- the first information includes indexes of N CSI-RS resources, or, the first information is used to determine indexes of N CSI-RS resources, and the N CSI-RS resources are the indexes of the second terminal Determined by the device according to the measurement result obtained by measuring the received CSI-RS, N is the number of CSI-RS resources that the second terminal device needs to feed back or report, N is a positive integer, and N ⁇ M.
- the second terminal device since the first terminal device uses different spatial domain transmission filters to send CSI-RS in turn, and the second terminal device cannot accurately know the resource location where the first terminal device sends the CSI-RS, the second terminal device It can only blindly detect whether the first terminal device has sent CSI-RS.
- the first terminal device uses different airspace transmission filters to send CSI-RS, some airspace transmission filters are not aligned with the second terminal device. Therefore , it may cause the second terminal device to fail to detect all the CSI-RS sent by the first terminal device, but only to detect a part of the CSI-RS. Therefore, the second terminal device may send an indication message to the first terminal device, Used to indicate the number of CSI-RS resource information (or CSI-RS resource indexes) fed back by the second terminal device.
- the first terminal device uses four spatial transmission filters (spatial transmission filter 0 to spatial transmission filter 3) to transmit CSI-RS respectively, and the first terminal device transmits CSI-RS in time slot 0 to
- the second terminal device sends an indication message, which is used to indicate that the first terminal device will use different airspace transmission filters to send CSI-RS in turn, and indicates that the delay boundary is 10 time slots, that is, the second terminal device After 10, the CSI-RS resource index and corresponding measurement results are fed back to the first terminal device, which also means that the first terminal device will send the CSI-RS resource in turn before time slot 10.
- the first terminal device selects resources through mode 2 (mode 2) (that is, the above-mentioned second mode), it cannot be guaranteed that the first terminal device has periodic transmission resources to transmit CSI-RS, as shown in FIG. 15 , the first terminal The device selects four time slots such as time slot 3/5/6/8 to send CSI-RS respectively with different airspace transmission filters, and different time slots use different airspace transmission filters.
- the second terminal device detects the SCI sent by the first terminal device in the resource pool, and determines whether the first terminal device sends the CSI-RS. Due to factors such as channel quality, half-duplex limitation, and whether the direction of the airspace transmit filter is aligned, the second terminal device can only receive the CSI-RS sent by the airspace transmit filter 1 and the airspace transmit filter 2. Therefore, the first The second terminal device feeds back at most two CSI-RS resource indexes and corresponding measurement results.
- the second terminal device may select one or two CSI-RS resources to feed back to the first terminal device.
- the indexes of the N CSI-RS resources are arranged according to the order of the measurement results corresponding to the N CSI-RS resources from high to low, or, the indexes of the N CSI-RS resources are arranged according to the order of the N CSI-RS resources
- the measurement results corresponding to the CSI-RS resources are arranged in descending order.
- the second terminal device may also only feed back CSI-RS resource information, and at this time, the fed back CSI-RS resource information is arranged in descending order of measurement results.
- N 3, that is, three CSI-RS resource information needs to be fed back, namely CSI-RS resource 1, CSI-RS resource 2, and CSI-RS resource 3, and the corresponding RSRP measurement results are -30dBm and -10dBm respectively , -20dBm, the feedback CSI-RS resource information is shown in Figure 16, that is, the CSI-RS resource with the best measurement result is at the top, followed by the CSI-RS resource with the suboptimal measurement result, and so on. It may also be that the CSI-RS resource with the best measurement result is last, followed by the CSI-RS resource with the second best measurement result, and so on, as shown in FIG. 17 .
- the first information further includes first measurement information, and the first measurement information is used to indicate measurement results corresponding to the N CSI-RS resources.
- the second terminal device feeds back indices of N CSI-RS resources and corresponding measurement results.
- the first terminal device when the first terminal device needs to switch the spatial domain transmission filter, it can quickly select and switch from the N spatial domain transmission filters corresponding to the N CSI-RS resources fed back by the second terminal device, and There is no need for the first terminal device to perform the process of selecting the optimal spatial domain transmission filter again.
- the sender needs to re-determine the optimal Spatial send filter. If the receiving end only feeds back one CSI-RS resource, when the link fails, the transmitting end needs to re-select the optimal spatial domain transmission filter process, so as to re-determine a new optimal spatial domain transmission filter. If the receiving end feeds back N CSI-RS resources, when the spatial transmission filter selected by the transmitting end fails, one can be selected from the spatial transmission filters corresponding to the remaining N-1 CSI-RS resources fed back by the receiving end.
- the transmitting end can have a higher probability to select a spatial domain transmitting filter to transmit sidelink data to multiple receiving ends at the same time.
- the transmitter supports 4 airspace transmit filters, corresponding to airspace transmit filters 0-3 respectively. If receiver 1 only feeds back one preferred airspace transmit filter, such as airspace transmit filter 0, receiver 2 feeds back a preferred airspace transmit filter.
- the sending end cannot simultaneously send sidelink data (the sidelink data is sidelink feedback information) to two receiving ends at the same time.
- receiver 1 feeds back two preferred spatial domain transmit filters, such as spatial domain transmit filters 0 and 1
- receiver 2 feeds back two preferred spatial domain transmit filters, such as spatial domain transmit filters 1 and 2
- the transmitter can use the spatial domain Transmit filter 1 simultaneously transmits sideline data to two receiving ends.
- the measurement results corresponding to the N CSI-RS resources are greater than or equal to the first threshold.
- the first threshold value is pre-configured or agreed by the protocol, or the first threshold value is configured by the network device, or the first threshold value is configured by the first terminal device .
- the N CSI-RS resources correspond to the first N CSI-RSs arranged in descending order of the measurement results of the CSI-RSs received by the second terminal device.
- the N CSI-RS resources include N1 first-type CSI-RS resources and N2 second-type CSI-RS resources;
- the N1 first-type CSI-RS resources correspond to the CSI-RS received by the second terminal device, or, the N1 first-type CSI-RS resources correspond to the CSI-RS received and measured by the second terminal device
- the result is greater than or equal to the CSI-RS of the first threshold value
- the index corresponding to the N2 second-type CSI-RS resources is determined by at least one CSI-RS resource in the N1 first-type CSI-RS resources
- the index corresponding to the N2 second-type CSI-RS resources is determined by at least one CSI-RS resource in the CSI-RS resources other than the N1 second-type CSI-RS resources among the multiple CSI-RS resources
- the first terminal device when the first terminal device receives the feedback information (that is, the first information) from the second terminal device, it can be determined according to the default value that its corresponding CSI-RS resource index is an invalid index.
- the default value is pre-configured or agreed by the protocol, or the default value is configured by the network device, or the default value is configured for the second terminal device by the first terminal device , or, the default value is configured for the first terminal device by the second terminal device, or, the default value is configured for the third terminal device, and the third terminal device is the first terminal device and the second terminal device The group head terminal of the communication group where the second terminal device is located.
- the group head terminal is a terminal that has at least one of the following functions in the communication group: resource management, resource allocation, resource coordination, resource configuration, and management of joining and leaving of group members.
- the default value indicates the default measurement result when there is no measurement result.
- the measurement result fed back by the receiving end to the sending end is the default value, it means that the receiving end has no CSI-RS resources corresponding to the default value. measurement results.
- the default value is pre-configured or network device configuration, for example, the default value is included in resource pool configuration information or sidewalk bandwidth part (BWP) configuration information.
- BWP sidewalk bandwidth part
- the sender sends a message to the receiver (or the receiver Send PC5-RRC signaling to the sender), which carries the default value information.
- the default value is less than or equal to the second threshold value, or the default value corresponds to negative infinity or infinity.
- the second threshold value is pre-configured or agreed by the protocol, or the second threshold value is configured by the network device, or the second threshold value is configured by the first terminal device .
- the default value may be less than or equal to the value corresponding to the lowest measurement result.
- the index corresponding to the N2 second-type CSI-RS resources is determined by at least one CSI-RS resource in the N1 first-type CSI-RS resources, for example, select N1
- the resource index corresponding to the CSI-RS resource with the best or worst measurement result in the first type of CSI-RS resource is used as the index of the N2 second type of CSI-RS resources.
- N 3
- the second terminal device In addition to feeding back the resource index corresponding to CSI-RS resource 1 and CSI-RS resource 2, the second terminal device The second terminal device also needs to feed back a CSI-RS resource index.
- the second terminal device selects the CSI-RS with the best RSRP measurement result, that is, CSI-RS resource 1, and feeds back its CSI-RS resource index.
- the second terminal arranges its corresponding CSI-RS resources in descending order of RSRP measurement results, so the order of the fed back CSI-RS resource indexes is shown in Figure 18 .
- the three CSI-RS resource indexes fed back by the second terminal device there are two CSI-RS resource index values of 1 and one CSI-RS resource index value of 2.
- the first terminal device receives the feedback information from the second terminal device, according to the repeated CSI-RS resource index 1, it can be determined that one of the CSI-RS index 1 (such as the second CSI-RS resource index 1) is a Invalid index.
- the index corresponding to the N2 second-type CSI-RS resources is determined by at least one CSI-RS resource among the N1 first-type CSI-RS resources, specifically, for example, N1 is selected.
- the resource index corresponding to the CSI-RS resource with the best or worst measurement result among the CSI-RS resources of the first type is used as the index of the N2 CSI-RS resources of the second type.
- the second terminal device In addition to feeding back the resource index corresponding to CSI-RS resource 1 and CSI-RS resource 2, the second terminal device The second terminal device also needs to feed back two CSI-RS resource indexes. Since both CSI-RS resource 1 and CSI-RS resource 2 have measurement results, the second terminal device can repeatedly feed back CSI-RS resource 1 and CSI-RS resource 2.
- the order of the fed back CSI-RS resource indexes is as shown in FIG. 19 .
- the 4 CSI-RS resource indexes fed back by the second terminal device there are two CSI-RS resource index values of 1 and two CSI-RS resource index values of 2.
- the first terminal device receives the feedback information from the second terminal device, it can determine one of the CSI-RS indexes (such as the second CSI-RS resource index 1 and the second CSI-RS resource index 1) according to the repeated CSI-RS resource indexes.
- -RS resource index 2 is an invalid index.
- the second terminal device when the number of CSI-RS resources meeting the conditions detected by the second terminal device is N1 (N1 ⁇ N), the second terminal device feeds back N CSI-RS resource information and N measurement results , which includes N1 pieces of CSI-RS resource information satisfying the conditions and their corresponding measurement results, and other (N-N1) pieces of CSI-RS resource information, and their corresponding measurement results are default values.
- the CSI-RS resources that meet the conditions include the following two situations:
- the CSI-RS resource meeting the condition includes the CSI-RS resource detected by the second terminal device. That is, the second terminal device will detect the SCI sent by the first terminal device. If the SCI is detected, the resource information of the CSI-RS sent by the first terminal device can be determined through the SCI. Therefore, the second terminal device can use the CSI -RS to measure and obtain corresponding measurement results.
- the CSI-RS resource meeting the condition includes the CSI-RS resource detected by the second terminal device, and the measurement result thereof exceeds the first threshold. That is, the second terminal device will feed back the CSI-RS resource information only when the second terminal device detects the CSI-RS resource and the measurement result exceeds the first threshold.
- the fed back CSI-RS resource information includes CSI-RS resource 1 and CSI-RS resource 2, and CSI-RS resource 3 is not fed back.
- the second terminal device may select any CSI-RS resource (except the CSI-RS resource meeting the condition) to associate with the default value.
- the second terminal device randomly selects one of the CSI-RS resources 0/1/3 and feeds back its index value, and its corresponding measurement result is set as a default value.
- the second terminal device selects CSI-RS resource 0 sets its measurement result as a default value, and feeds it back to the first terminal device, as shown in FIG. 20 .
- the second terminal equipment from N1 Select a CSI-RS resource from the CSI-RS resources that meet the conditions, and set its measurement result as the default value. For example, the CSI-RS with the best or worst measurement result is selected from the N1 CSI-RS resources, or a CSI-RS is selected arbitrarily or randomly.
- two CSI-RS such as CSI-RS resource 1 and CSI-RS -RS resource 2
- the RSRP threshold is -80dBm
- the measurement result is -10dBm and the default value, as shown in Figure 21.
- the first measurement information includes quantization index information of measurement results respectively corresponding to the N CSI-RS resources.
- the index of the N CSI-RS resources and the number of bits occupied by the quantization index information of the measurement results corresponding to the N CSI-RS resources are:
- A represents the number of bits occupied by one CSI-RS resource index among the N CSI-RS resource indexes
- B represents the quantization index of the measurement result corresponding to one CSI-RS resource among the N CSI-RS resource indexes the number of bits occupied by the information
- the first measurement information includes quantization index information of the first measurement result and N-1 differential quantization index information, where the first measurement result corresponds to the measurement results corresponding to the N CSI-RS resources highest value.
- the index of the N CSI-RS resources and the number of bits occupied by the quantization index information of the measurement results corresponding to the N CSI-RS resources are:
- A represents the number of bits occupied by the index of one CSI-RS resource among the indexes of the N CSI-RS resources
- B represents the number of bits occupied by the quantized index information of the first CSI-RS resource among the N CSI-RS resources.
- the number of bits, and the measurement result corresponding to the first CSI-RS resource is the CSI-RS resource with the largest corresponding measurement result among the N CSI-RS resources, and C represents other CSI-RS resources among the N CSI-RS resources The number of bits occupied by the quantization index information of the difference between the measurement result corresponding to the resource and the measurement result corresponding to the first CSI-RS resource, or, C represents the two adjacent CSI-RS resources corresponding to the measurement result The number of bits occupied by the quantization index information of the difference of the measurement result corresponding to the CSI-RS resource, and
- the range of RSRP measurement results represented by B bits is [B1, B2]dBm, (such as [-140,-44]dBm), the step size is 1dBm, and the range represented by differential RSRP It is [C1,C2]dB (such as [-30,0]dB), and the step size is 2dB.
- the differential RSRP is obtained relative to the maximum RSRP measurement result, that is, the difference between the differential RSRP representation and the maximum RSRP measurement result.
- the differential RSRP is obtained relative to the measurement result of an RSRP adjacent to it and greater than it.
- the maximum RSRP corresponds to -60dBm, and the remaining two differential RSRPs are -10dB and -30dB respectively;
- the maximum RSRP corresponds to -60dBm, and the remaining two differential RSRPs are -10dB and -20dB respectively.
- the second terminal device performs RSRP measurement according to CSI-RS, and feeds back the measurement result of RSRP.
- the second terminal device usually uses Sidelink Control Information (Sidelink Control Information, SCI) or Media Access Control Control Element (Media Access Control Control Element, MAC CE) to carry the feedback CSI-RS resource information and corresponding measurement results. Therefore, it is necessary to quantify the RSRP measurement results.
- SCI Sidelink Control Information
- MAC CE Media Access Control Element
- the second terminal device feeds back is the layer 1 RSRP measurement result (that is, L1 RSRP), that is, the RSRP result obtained by physical layer measurement is directly quantized and fed back to the first terminal device without going through layer 3 filtering.
- 7 bits are used to quantize the measured RSRP, as shown in Table 1 below.
- the range of quantized RSRP is [-140,44]dBm
- the measurement results smaller than the minimum value (ie -140dBm) are represented by an RSRP index
- the measurement result is represented by an RSRP index. Therefore, the default value can be defined to be less than or equal to the minimum value in the quantization range.
- the default RSRP is -141dBm, which is smaller than the minimum quantization value; at this time, the quantized RSRP can be expressed as the following table.
- the RSRP corresponding index fed back by the second terminal device to the first terminal device is RSRP_15
- 7 bits are used to quantize the measured RSRP, as shown in Table 2 below.
- the default RSRP setting is negative infinity (or a very small value, such as -1000dBm), or the default RSRP setting is infinity (or a very large value, such as 1000dBm); at this time, the quantized RSRP They can be expressed as the following Table 3-1 and Table 3-2 respectively.
- the RSRP corresponding index fed back by the second terminal device to the first terminal device is RSRP_0 in Table 3-1 (or RSRP_127 in Table 3-2)
- RSRP_16 RSRP ⁇ -140 dBm RSRP_17 -140 ⁇ RSRP ⁇ -139 dBm RSRP_18 -139 ⁇ RSRP ⁇ -138 dBm ... the ... RSRP_111 -46 ⁇ RSRP ⁇ -45 dBm RSRP_112 -45 ⁇ RSRP ⁇ -44 dBm RSRP_113 -44 ⁇ RSRP dBm RSRP_114 invalid dBm RSRP_115 invalid dBm RSRP_116 invalid dBm RSRP_117 invalid dBm RSRP_118 invalid dBm RSRP_119 invalid dBm RSRP_120 invalid dBm RSRP_121 invalid dBm RSRP_122 invalid dBm RSRP_123 invalid dBm RSRP_124 invalid dBm RSRP_125 invalid dBm RSRP_126 invalid dBm RSRP127 invalid dBm
- the second terminal device When the above example is applicable to the N CSI-RSs fed back by the second terminal device and their measurement results, a corresponding RSRP result (such as a 7-bit quantization result) is fed back for each measurement result.
- the second terminal device in order to reduce the overhead of feedback signaling, the second terminal device usually adopts a differential RSRP feedback manner for multiple RSRP measurement results.
- the second terminal device when the second terminal device needs to feed back N CSI-RS resource information and their corresponding RSRP measurement results, for those with the best RSRP measurement results, the second terminal device feeds back its corresponding CSI-RS and corresponding RSRP measurement results
- the result (such as the RSRP index after 7-bit quantization in Table 1 above), but for the other N-1 measurement results, the feedback differential RSRP is usually used.
- the so-called differential RSRP can include two situations:
- the first case the difference relative to the optimal RSRP result.
- the corresponding differential RSRP index is "DIFFRSRP_12".
- the second case that is, the difference with respect to its neighbor and the measurement result is greater than or equal to its RSRP measurement result.
- a default value for differential RSRP may be defined.
- the last differential RSRP index ie DIFFRSRP_15
- DIFFRSRP_15 the last differential RSRP index
- the first information includes indexes of N3 CSI-RS resources
- the N3 CSI-RS resources are determined by the second terminal device according to the measurement results of the received CSI-RS measurements, N3 ⁇ N, N is the number of CSI-RS resources that the second terminal device needs to feed back or report, N3 and N are positive integers, and N ⁇ M.
- the N3 CSI-RS resources correspond to the CSI-RS received by the second terminal device, or, the N3 CSI-RS resources correspond to the CSI-RS received by the second terminal device and the corresponding measurement result is greater than Or a CSI-RS equal to the first threshold.
- the indexes of the N3 CSI-RS resources are arranged according to the order of the measurement results corresponding to the N3 CSI-RS resources from high to low, or, the indexes of the N3 CSI-RS resources are arranged according to the order of the N3 CSI-RS resources
- the measurement results corresponding to the CSI-RS resources are arranged in descending order. For details, reference may be made to the relevant description about the quantization index information of the measurement results respectively corresponding to the N CSI-RS resources, which will not be repeated here.
- the first information further includes second measurement information, where the second measurement information is used to indicate measurement results corresponding to the N3 CSI-RS resources.
- the second measurement information includes quantization index information of measurement results respectively corresponding to the N3 CSI-RS resources.
- quantization index information of the measurement results respectively corresponding to the N CSI-RS resources For details, reference may be made to the relevant description about the quantization index information of the measurement results respectively corresponding to the N CSI-RS resources, which will not be repeated here.
- the second measurement information includes quantization index information of the second measurement result and N3-1 differential quantization index information, where the second measurement result corresponds to the measurement results corresponding to the N3 CSI-RS resources highest value.
- quantization index information of the measurement results respectively corresponding to the N CSI-RS resources, which will not be repeated here.
- the first information further includes first indication information, and the first indication information is used to indicate the value of N3.
- the first information further includes second indication information, and the second indication information is used to indicate the value of N, or, the second indication information is used to indicate that the second terminal device sends the first terminal The number of CSI-RS resources fed back by the device, or the second indication information is used to indicate the number of measurement results fed back by the second terminal device to the first terminal device.
- the first terminal device acquires third indication information, where the third indication information is used to indicate the value of N.
- the first terminal device obtains the third indication information according to pre-configuration information; or, the first terminal device receives the third indication information sent by the network device; or, the first terminal device receives the third indication information The third indication information sent by the second terminal device; or, the first terminal device receives the third indication information sent by the third terminal device, where the third terminal device is where the first terminal device and the second terminal device are located The head terminal of the communication group.
- the first terminal sends fourth indication information to the second terminal, where the fourth indication information is used to indicate the value of N.
- the second terminal device acquires fourth indication information, where the fourth indication information is used to indicate the value of N.
- the second terminal device acquires the fourth indication information according to preconfigured information; or, the second terminal device receives the fourth indication information sent by the network device; or, the second terminal device receives the fourth indication information The fourth indication information sent by a terminal device; or, the second terminal device receives the fourth indication information sent by a third terminal device, where the third terminal device is where the first terminal device and the second terminal device are located.
- the head terminal of the communication group is where the third terminal device is where the first terminal device and the second terminal device are located.
- the measurements include lateral RSRP and/or lateral SINR.
- the first information is carried by one of the following:
- SCI Sidelink Control Information
- MAC CE Media Access Control Control Element
- PSFCH Physical Sidelink Feedback Channel
- PC5-RRC signaling PC5-RRC signaling.
- an information field included in SCI, MAC CE or PC5-RRC is used to indicate the value of parameter N and/or N3.
- the format of the MAC CE may be as shown in Figure 22 and/or Figure 23.
- the MAC CE when the RSRP to be fed back is fed back its corresponding quantized RSRP index (as shown in Table 1), that is, when each RSRP is represented by 7 bits, the MAC CE includes N3 CSI-RS resource indexes and their corresponding The RSRP measurement result, and includes the information field indicating the value of N3.
- N 3, that is, at most 3 CSI-RS resources and their corresponding measurement results are fed back, and the CSI-RS resource set includes 4 CSI-RS resources, so 2 bits are used to represent the CSI-RS index,
- each Each RSRP measurement result is represented by 7 bits, so the order of each CSI-RS resource in the MAC CE may not be agreed upon.
- Oct1 means byte 1, and so on.
- the second terminal device may Sending indication information (that is, second information) to the first terminal device, used to indicate that the second terminal device has not received the CSI-RS, or used to instruct the first terminal device to resend the CSI-RS in turn.
- the second terminal device may send the indication information (i.e. the second information) through SCI, MAC CE or PC5-RRC, when the indication information (i.e. the second information) is carried by the MAC CE, as shown in Figure 22 (d) shown.
- the MAC CE includes N3 CSI-RS resource indexes and their corresponding RSRP measurement results.
- N 3, that is, at most 3 CSI-RS resources and their corresponding measurement results are fed back, and the CSI-RS resource set includes 4 CSI-RS resources, so 2 bits are used to represent the CSI-RS index,
- the CSI-RS resource corresponding to the measurement result, CSI-RS k2 indicates the CSI-RS resource corresponding to the second highest RSRP measurement result, and CSI-RS k3 indicates the CSI-RS resource corresponding to the third highest RSRP measurement result.
- the second terminal device may Sending indication information (that is, second information) to the first terminal device, used to indicate that the second terminal device has not received the CSI-RS, or used to instruct the first terminal device to resend the CSI-RS in turn.
- the second terminal device may send the indication information (i.e. the second information) through SCI, MAC CE or PC5-RRC, when the indication information (i.e. the second information) is carried by the MAC CE, as shown in Figure 23 (d) shown.
- the first terminal device selects a target CSI-RS resource according to the first information, and the airspace transmission filter corresponding to the target CSI-RS resource is the target airspace transmission filter. Further, the first terminal device transmits sidelink data to the second terminal device by using the target airspace transmission filter. Correspondingly, the second terminal device receives the sidelink data sent by the first terminal device using the target airspace transmit filter corresponding to the target CSI-RS resource.
- the first terminal device sends first side configuration information to the second terminal device, the first side configuration information is used to configure at least one transmission configuration indicator TCI state, and the at least one TCI state includes the first A TCI state, the reference signal included in the first TCI state is the CSI-RS corresponding to the target CSI-RS resource.
- the quasi-co-site (QCL) type included in the first TCI state is QCL-TypeD.
- the first terminal device sends fifth indication information to the second terminal device, where the fifth indication information is used to indicate the first TCI state.
- the fifth indication information includes index information corresponding to the first TCI state.
- the fifth indication information is carried by one of the following:
- SCI Sidelink Control Information
- Media Access Control Element Media Access Control Element
- MAC CE Media Access Control Control Element
- PC5-RRC signaling PC5-RRC signaling.
- the first terminal device when the fifth indication information is carried by SCI or MAC CE, the first terminal device indicates activation of sidelink feedback.
- the first terminal device receives the second information sent by the second terminal device; wherein,
- the second information is used to indicate that the second terminal device has not detected the CSI-RS, or the second information is used to indicate that the second terminal device detects that the CSI-RS corresponding to the measurement results is lower than the first threshold value , or, the second information is used to instruct the first terminal device to resend the M CSI-RSs. Further, the first terminal device respectively sends the M CSI-RSs to the second terminal device by reusing the airspace transmission filter.
- the second information is carried by one of the following:
- a specific process for the first terminal device to determine the spatial domain transmission filter can be shown in FIG. 24.
- the following steps S11 to S15 the following steps S11 to S15.
- the first terminal device transmits M CSI-RSs respectively by using a spatial domain transmission filter.
- the first terminal device uses M spatial domain transmission filters to transmit M CSI-RS resources respectively, and different spatial domain transmission filters correspond to different CSI-RS resources.
- the first terminal device can determine the airspace transmission filter suitable for the first terminal device according to the correspondence between the airspace transmission filter and the CSI-RS resource.
- the second terminal device measures the CSI-RS sent by the first terminal device, such as measuring RSRP or SINR, and selects N CSI-RS resources with optimal measurement results.
- the second terminal device feeds back the optimal N CSI-RS resource information and corresponding measurement results to the first terminal device.
- the first terminal device obtains the CSI-RS resource index and the RSRP measurement result sent by the second terminal device, selects a CSI-RS resource therefrom, and further, determines airspace transmission filter information corresponding to the CSI-RS resource. Preferably, the first terminal device selects the CSI-RS resource corresponding to the optimal measurement result.
- the first terminal device uses the selected CSI-RS resource to determine its corresponding airspace transmission filter information, and uses the airspace transmission filter to perform sidelink transmission.
- an optimal airspace transmission filter between the first terminal device and the second terminal device can be selected.
- the first terminal device and the second terminal device exchange information, or obtain the number of CSI-RS resources to be fed back from network configuration information or pre-configuration information, when the number of CSI-RS resources detected by the second terminal device
- the second terminal device sends indication information to the first terminal device, indicating the number of CSI-RS resources actually fed back by the second terminal device.
- Fig. 25 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application.
- the terminal device 300 is a first terminal device.
- the terminal device 300 includes:
- the communication unit 310 is configured to use the airspace transmission filter to send M channel state information reference signals CSI-RS to the second terminal device, and the M CSI-RS are used to select a target airspace transmission filter;
- the M CSI-RSs correspond to multiple CSI-RS resources in the target CSI-RS resource set, and M is a positive integer.
- the communication unit 310 is further configured to receive the first information sent by the second terminal device;
- the first information includes a target CSI reporting amount
- the target CSI reporting amount includes at least one of the following:
- CSI-RS resource indication CRI, CRI and reference signal received power RSRP, CRI and received signal strength indication SINR.
- the first information includes indexes of N CSI-RS resources, or, the first information is used to determine indexes of N CSI-RS resources, and the N CSI-RS resources are the indexes of the second terminal Determined by the device according to the measurement result obtained by measuring the received CSI-RS, N is the number of CSI-RS resources that the second terminal device needs to feed back or report, N is a positive integer, and N ⁇ M.
- the indexes of the N CSI-RS resources are arranged according to the order of the measurement results corresponding to the N CSI-RS resources from high to low, or, the indexes of the N CSI-RS resources are arranged according to the order of the N CSI-RS resources
- the measurement results corresponding to the CSI-RS resources are arranged in descending order.
- the first information further includes first measurement information, and the first measurement information is used to indicate measurement results corresponding to the N CSI-RS resources.
- the measurement results corresponding to the N CSI-RS resources are greater than or equal to a first threshold.
- the N CSI-RS resources correspond to the first N CSI-RSs arranged in descending order of the measurement results of the CSI-RSs received by the second terminal device.
- the N CSI-RS resources include N1 first-type CSI-RS resources and N2 second-type CSI-RS resources;
- the N1 first-type CSI-RS resources correspond to the CSI-RS received by the second terminal device, or, the N1 first-type CSI-RS resources correspond to the CSI-RS received and measured by the second terminal device
- the result is greater than or equal to the CSI-RS of the first threshold value
- the index corresponding to the N2 second-type CSI-RS resources is determined by at least one CSI-RS resource in the N1 first-type CSI-RS resources
- the index corresponding to the N2 second-type CSI-RS resources is determined by at least one CSI-RS resource in the CSI-RS resources other than the N1 first-type CSI-RS resources among the multiple CSI-RS resources
- the default value is pre-configured or agreed by the protocol, or the default value is configured by the network device, or the default value is configured for the second terminal device by the first terminal device , or, the default value is configured for the first terminal device by the second terminal device, or, the default value is configured for the third terminal device, and the third terminal device is the first terminal device and the second terminal device The group head terminal of the communication group where the second terminal device is located.
- the default value is less than or equal to the second threshold value, or the default value corresponds to negative infinity or infinity.
- the first measurement information includes quantization index information of measurement results respectively corresponding to the N CSI-RS resources.
- the first measurement information includes quantization index information of the first measurement result and N-1 differential quantization index information, where the first measurement result corresponds to the measurement results corresponding to the N CSI-RS resources highest value.
- the first information includes indexes of N3 CSI-RS resources
- the N3 CSI-RS resources are determined by the second terminal device according to the measurement results of the received CSI-RS measurements, N3 ⁇ N, N is the number of CSI-RS resources that the second terminal device needs to feed back or report, N3 and N are positive integers, and N ⁇ M.
- the N3 CSI-RS resources correspond to the CSI-RS received by the second terminal device, or, the N3 CSI-RS resources correspond to the CSI-RS received by the second terminal device and the corresponding measurement result is greater than Or a CSI-RS equal to the first threshold.
- the indexes of the N3 CSI-RS resources are arranged according to the order of the measurement results corresponding to the N3 CSI-RS resources from high to low, or, the indexes of the N3 CSI-RS resources are arranged according to the order of the N3 CSI-RS resources
- the measurement results corresponding to the CSI-RS resources are arranged in descending order.
- the first information further includes second measurement information, where the second measurement information is used to indicate measurement results corresponding to the N3 CSI-RS resources.
- the second measurement information includes quantization index information of measurement results respectively corresponding to the N3 CSI-RS resources.
- the second measurement information includes quantization index information of the second measurement result and N3-1 differential quantization index information, where the second measurement result corresponds to the measurement results corresponding to the N3 CSI-RS resources highest value.
- the first information further includes first indication information, and the first indication information is used to indicate the value of N3.
- the first information further includes second indication information, and the second indication information is used to indicate the value of N, or, the second indication information is used to indicate that the second terminal device sends the first terminal The number of CSI-RS resources fed back by the device, or the second indication information is used to indicate the number of measurement results fed back by the second terminal device to the first terminal device.
- the communication unit 310 is further configured to acquire third indication information, where the third indication information is used to indicate the value of N.
- the communication unit 310 is specifically used for:
- the third terminal device is the head terminal of the communication group in which the first terminal device and the second terminal device belong.
- the communication unit 310 is further configured to send fourth indication information to the second terminal device, where the fourth indication information is used to indicate the value of N.
- the measurements include lateral RSRP and/or lateral SINR.
- the first information is carried by one of the following:
- Sidelink control information SCI SCI, medium access control element MAC CE, sidelink feedback channel PSFCH, PC5-radio resource control RRC signaling.
- the terminal device 300 further includes: a processing unit 320, wherein,
- the processing unit 320 is configured to select a target CSI-RS resource according to the first information, and the spatial domain transmission filter corresponding to the target CSI-RS resource is the target spatial domain transmission filter.
- the communication unit 310 is further configured to send first side configuration information to the second terminal device, where the first side configuration information is used to configure at least one transmission configuration indication TCI status, and the at least one TCI status A first TCI state is included, and a reference signal included in the first TCI state is a CSI-RS corresponding to the target CSI-RS resource.
- the quasi-co-sited QCL type included in the first TCI state is QCL-TypeD.
- the communication unit 310 is further configured to send fifth indication information to the second terminal device, where the fifth indication information is used to indicate the first TCI state.
- the communication unit 310 is further configured to use the target airspace transmit filter to transmit sidelink data to the second terminal device.
- the communication unit 310 is further configured to receive second information sent by the second terminal device; wherein,
- the second information is used to indicate that the second terminal device has not detected the CSI-RS, or the second information is used to indicate that the second terminal device detects that the CSI-RS corresponding to the measurement results is lower than the first threshold value , or, the second information is used to instruct the first terminal device to resend the M CSI-RSs.
- the communication unit 310 is further configured to reuse a spatial domain transmission filter to respectively transmit the M CSI-RSs to the second terminal device.
- the first threshold value is pre-configured or agreed by the protocol, or the first threshold value is configured by the network device, or the first threshold value is configured by the first terminal device .
- the second threshold value is pre-configured or agreed by the protocol, or the second threshold value is configured by the network device, or the second threshold value is configured by the first terminal device .
- the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system-on-chip.
- the aforementioned processing unit may be one or more processors.
- terminal device 300 may correspond to the first terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 300 are respectively in order to realize the The corresponding process of the first terminal device in the method 200 is shown, and for the sake of brevity, details are not repeated here.
- Fig. 26 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application.
- the terminal device 400 is a second terminal device.
- the terminal device 400 includes:
- the communication unit 410 is configured to receive M channel state information reference signals CSI-RS sent by the first terminal device using a spatial domain transmission filter, wherein the M CSI-RS are used to select a target spatial domain transmission filter, and the M CSI -
- the RS corresponds to multiple CSI-RS resources in the target CSI-RS resource set, and M is a positive integer.
- the communication unit 410 is further configured to send first information to the first terminal device
- the first information includes a target CSI reporting amount
- the target CSI reporting amount includes at least one of the following:
- CSI-RS resource indication CRI, CRI and reference signal received power RSRP, CRI and received signal strength indication SINR.
- the first information includes indexes of N CSI-RS resources, or, the first information is used to determine indexes of N CSI-RS resources, and the N CSI-RS resources are the indexes of the second terminal Determined by the device according to the measurement result obtained by measuring the received CSI-RS, N is the number of CSI-RS resources that the second terminal device needs to feed back or report, N is a positive integer, and N ⁇ M.
- the indexes of the N CSI-RS resources are arranged according to the order of the measurement results corresponding to the N CSI-RS resources from high to low, or, the indexes of the N CSI-RS resources are arranged according to the order of the N CSI-RS resources
- the measurement results corresponding to the CSI-RS resources are arranged in descending order.
- the first information further includes first measurement information, and the first measurement information is used to indicate measurement results corresponding to the N CSI-RS resources.
- the measurement results corresponding to the N CSI-RS resources are greater than or equal to a first threshold.
- the N CSI-RS resources correspond to the first N CSI-RSs arranged in descending order of the measurement results of the CSI-RSs received by the second terminal device.
- the N CSI-RS resources include N1 first-type CSI-RS resources and N2 second-type CSI-RS resources;
- the N1 first-type CSI-RS resources correspond to the CSI-RS received by the second terminal device, or, the N1 first-type CSI-RS resources correspond to the CSI-RS received and measured by the second terminal device
- the result is greater than or equal to the CSI-RS of the first threshold value
- the index corresponding to the N2 second-type CSI-RS resources is determined by at least one CSI-RS resource in the N1 first-type CSI-RS resources
- the index corresponding to the N2 second-type CSI-RS resources is determined by at least one CSI-RS resource in the CSI-RS resources other than the N1 first-type CSI-RS resources among the multiple CSI-RS resources
- the default value is pre-configured or agreed by the protocol, or the default value is configured by the network device, or the default value is configured for the second terminal device by the first terminal device , or, the default value is configured for the first terminal device by the second terminal device, or, the default value is configured for the third terminal device, and the third terminal device is the first terminal device and the second terminal device The group head terminal of the communication group where the second terminal device is located.
- the default value is less than or equal to the second threshold value, or the default value corresponds to negative infinity or infinity.
- the first measurement information includes quantization index information of measurement results respectively corresponding to the N CSI-RS resources.
- the first measurement information includes quantization index information of the first measurement result and N-1 differential quantization index information, where the first measurement result corresponds to the measurement results corresponding to the N CSI-RS resources highest value.
- the first information includes indexes of N3 CSI-RS resources
- the N3 CSI-RS resources are determined by the second terminal device according to the measurement results of the received CSI-RS measurements, N3 ⁇ N, N is the number of CSI-RS resources that the second terminal device needs to feed back or report, N3 and N are positive integers, and N ⁇ M.
- the N3 CSI-RS resources correspond to the CSI-RS received by the second terminal device, or, the N3 CSI-RS resources correspond to the CSI-RS received by the second terminal device and the corresponding measurement result is greater than Or a CSI-RS equal to the first threshold.
- the indexes of the N3 CSI-RS resources are arranged according to the order of the measurement results corresponding to the N3 CSI-RS resources from high to low, or, the indexes of the N3 CSI-RS resources are arranged according to the order of the N3 CSI-RS resources
- the measurement results corresponding to the CSI-RS resources are arranged in descending order.
- the first information further includes second measurement information, where the second measurement information is used to indicate measurement results corresponding to the N3 CSI-RS resources.
- the second measurement information includes quantization index information of measurement results respectively corresponding to the N3 CSI-RS resources.
- the second measurement information includes quantization index information of the second measurement result and N3-1 differential quantization index information, where the second measurement result corresponds to the measurement results corresponding to the N3 CSI-RS resources highest value.
- the first information further includes first indication information, and the first indication information is used to indicate the value of N3.
- the first information further includes second indication information, and the second indication information is used to indicate the value of N, or, the second indication information is used to indicate that the second terminal device sends the first terminal The number of CSI-RS resources fed back by the device, or the second indication information is used to indicate the number of measurement results fed back by the second terminal device to the first terminal device.
- the communication unit 410 is further configured to acquire fourth indication information, where the fourth indication information is used to indicate the value of N.
- the communication unit 410 is specifically used for:
- the third terminal device is the head terminal of the communication group in which the first terminal device and the second terminal device belong.
- the measurements include lateral RSRP and/or lateral SINR.
- the first information is carried by one of the following:
- Sidelink control information SCI SCI, medium access control element MAC CE, sidelink feedback channel PSFCH, PC5-radio resource control RRC signaling.
- the communication unit 410 is further configured to receive first side configuration information sent by the first terminal device, where the first side configuration information is used to configure at least one transmission configuration indicator TCI state, and the at least one TCI
- the state includes a first TCI state
- the reference signal included in the first TCI state is a CSI-RS corresponding to a target CSI-RS resource
- the target CSI-RS resource is determined by the first terminal device according to the first information
- the spatial domain transmission filter corresponding to the target CSI-RS resource is the target spatial domain transmission filter.
- the quasi-co-sited QCL type included in the first TCI state is QCL-TypeD.
- the communication unit 410 is further configured to receive fifth indication information sent by the first terminal device, where the fifth indication information is used to indicate the first TCI state.
- the communication unit 410 is further configured to receive sidelink data transmitted by the first terminal device using the target airspace transmit filter corresponding to the target CSI-RS resource.
- the communication unit 410 is further configured to send second information to the first terminal device; wherein,
- the second information is used to indicate that the second terminal device has not detected the CSI-RS, or the second information is used to indicate that the second terminal device detects that the CSI-RS corresponding to the measurement results is lower than the first threshold value , or, the second information is used to instruct the first terminal device to resend the M CSI-RSs.
- the communication unit 410 is further configured to receive the M CSI-RSs resent by the first terminal device.
- the first threshold value is pre-configured or agreed by the protocol, or the first threshold value is configured by the network device, or the first threshold value is configured by the first terminal device .
- the second threshold value is pre-configured or agreed by the protocol, or the second threshold value is configured by the network device, or the second threshold value is configured by the first terminal device .
- the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system-on-chip.
- terminal device 400 may correspond to the second terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 400 are respectively in order to realize the The corresponding process of the second terminal device in the method 200 is shown, and for the sake of brevity, details are not repeated here.
- FIG. 27 is a schematic structural diagram of a communication device 500 provided by an embodiment of the present application.
- the communication device 500 shown in FIG. 27 includes a processor 510, and the processor 510 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
- the communication device 500 may further include a memory 520 .
- the processor 510 can invoke and run a computer program from the memory 520, so as to implement the method in the embodiment of the present application.
- the memory 520 may be an independent device independent of the processor 510 , or may be integrated in the processor 510 .
- the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, specifically, to send information or data to other devices, or Receive messages or data from other devices.
- the transceiver 530 may include a transmitter and a receiver.
- the transceiver 530 may further include antennas, and the number of antennas may be one or more.
- the communication device 500 may specifically be the terminal device of the embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the first terminal device in each method of the embodiment of the present application. For brevity, in This will not be repeated here.
- the communication device 500 may specifically be the terminal device in the embodiment of the present application, and the communication device 500 may implement the corresponding process implemented by the second terminal device in each method of the embodiment of the present application. For the sake of brevity, in This will not be repeated here.
- Fig. 28 is a schematic structural diagram of a device according to an embodiment of the present application.
- the apparatus 600 shown in FIG. 28 includes a processor 610, and the processor 610 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
- the device 600 may further include a memory 620 .
- the processor 610 can invoke and run a computer program from the memory 620, so as to implement the method in the embodiment of the present application.
- the memory 620 may be an independent device independent of the processor 610 , or may be integrated in the processor 610 .
- the device 600 may further include an input interface 630 .
- the processor 610 can control the input interface 630 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.
- the device 600 may further include an output interface 640 .
- the processor 610 can control the output interface 640 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.
- the device can be applied to the terminal device in the embodiment of the present application, and the device can realize the corresponding process implemented by the first terminal device in each method of the embodiment of the present application, for the sake of brevity, no longer repeat.
- the device can be applied to the terminal device in the embodiment of the present application, and the device can realize the corresponding process implemented by the second terminal device in each method of the embodiment of the present application, for the sake of brevity, no longer repeat.
- the device mentioned in the embodiment of the present application may also be a chip.
- it may be a system-on-a-chip, a system-on-a-chip, a system-on-a-chip, or a system-on-a-chip.
- FIG. 29 is a schematic block diagram of a communication system 700 provided by an embodiment of the present application. As shown in FIG. 29 , the communication system 700 includes a first terminal device 710 and a second terminal device 720 .
- the first terminal device 710 can be used to realize the corresponding functions realized by the first terminal device in the above method
- the second terminal device 720 can be used to realize the corresponding functions realized by the second terminal device in the above method , for the sake of brevity, it is not repeated here.
- the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
- each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
- the above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components.
- DSP Digital Signal Processor
- ASIC Application Specific Integrated Circuit
- FPGA Field Programmable Gate Array
- a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
- the steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
- the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
- the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
- the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
- the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash.
- the volatile memory can be Random Access Memory (RAM), which acts as external cache memory.
- RAM Static Random Access Memory
- SRAM Static Random Access Memory
- DRAM Dynamic Random Access Memory
- Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
- SDRAM double data rate synchronous dynamic random access memory
- Double Data Rate SDRAM, DDR SDRAM enhanced synchronous dynamic random access memory
- Enhanced SDRAM, ESDRAM synchronous connection dynamic random access memory
- Synchlink DRAM, SLDRAM Direct Memory Bus Random Access Memory
- Direct Rambus RAM Direct Rambus RAM
- the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.
- the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
- the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the first terminal device in the methods of the embodiments of the present application, in order It is concise and will not be repeated here.
- the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the second terminal device in the methods of the embodiments of the present application, in order It is concise and will not be repeated here.
- the embodiment of the present application also provides a computer program product, including computer program instructions.
- the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the first terminal device in the methods of the embodiments of the present application.
- the computer program instructions cause the computer to execute the corresponding processes implemented by the first terminal device in the methods of the embodiments of the present application.
- the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the second terminal device in the methods of the embodiments of the present application.
- the computer program instructions cause the computer to execute the corresponding processes implemented by the second terminal device in the methods of the embodiments of the present application.
- the embodiment of the present application also provides a computer program.
- the computer program can be applied to the terminal device in the embodiment of the present application.
- the computer program executes the corresponding method implemented by the first terminal device in each method of the embodiment of the present application. For the sake of brevity, the process will not be repeated here.
- the computer program can be applied to the terminal device in the embodiment of the present application.
- the computer program executes the corresponding method implemented by the second terminal device in each method of the embodiment of the present application. For the sake of brevity, the process will not be repeated here.
- the disclosed systems, devices and methods may be implemented in other ways.
- the device embodiments described above are only illustrative.
- the division of the units is only a logical function division. In actual implementation, there may be other division methods.
- multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
- the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
- the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
- the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
- the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
- the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .
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Abstract
Description
| 上报值 | L1 RSRP | 单位 |
| RSRP_0 | 无效 | dBm |
| RSRP_1 | 无效 | dBm |
| RSRP_2 | 无效 | dBm |
| RSRP_3 | 无效 | dBm |
| RSRP_4 | 无效 | dBm |
| RSRP_5 | 无效 | dBm |
| RSRP_6 | 无效 | dBm |
| RSRP_7 | 无效 | dBm |
| RSRP_8 | 无效 | dBm |
| RSRP_9 | 无效 | dBm |
| RSRP_10 | 无效 | dBm |
| RSRP_11 | 无效 | dBm |
| RSRP_12 | 无效 | dBm |
| RSRP_13 | 无效 | dBm |
| RSRP_14 | 无效 | dBm |
| RSRP_15 | 无效 | dBm |
| RSRP_16 | RSRP<-140 | dBm |
| RSRP_17 | -140≤RSRP<-139 | dBm |
| RSRP_18 | -139≤RSRP<-138 | dBm |
| … | … | |
| RSRP_111 | -46≤RSRP<-45 | dBm |
| RSRP_112 | -45≤RSRP<-44 | dBm |
| RSRP_113 | -44≤RSRP | dBm |
| RSRP_114 | 无效 | dBm |
| RSRP_115 | 无效 | dBm |
| RSRP_116 | 无效 | dBm |
| RSRP_117 | 无效 | dBm |
| RSRP_118 | 无效 | dBm |
| RSRP_119 | 无效 | dBm |
| RSRP_120 | 无效 | dBm |
| RSRP_121 | 无效 | dBm |
| RSRP_122 | 无效 | dBm |
| RSRP_123 | 无效 | dBm |
| RSRP_124 | 无效 | dBm |
| RSRP_125 | 无效 | dBm |
| RSRP_126 | 无效 | dBm |
| RSRP_127 | 无穷 | dBm |
| 上报值 | L1 RSRP | 单位 |
| RSRP_0 | 无效 | dBm |
| RSRP_1 | 无效 | dBm |
| RSRP_2 | 无效 | dBm |
| RSRP_3 | 无效 | dBm |
| RSRP_4 | 无效 | dBm |
| RSRP_5 | 无效 | dBm |
| RSRP_6 | 无效 | dBm |
| RSRP_7 | 无效 | dBm |
| RSRP_8 | 无效 | dBm |
| RSRP_9 | 无效 | dBm |
| RSRP_10 | 无效 | dBm |
| RSRP_11 | 无效 | dBm |
| RSRP_12 | 无效 | dBm |
| RSRP_13 | 无效 | dBm |
| RSRP_14 | 无效 | dBm |
| RSRP_15 | RSRP<-141 | dBm |
| RSRP_16 | -141≤RSRP<-140 | dBm |
| RSRP_17 | -140≤RSRP<-139 | dBm |
| RSRP_18 | -139≤RSRP<-138 | dBm |
| … | … | |
| RSRP_111 | -46≤RSRP<-45 | dBm |
| RSRP_112 | -45≤RSRP<-44 | dBm |
| RSRP_113 | -44≤RSRP | dBm |
| RSRP_114 | 无效 | dBm |
| RSRP_115 | 无效 | dBm |
| RSRP_116 | 无效 | dBm |
| RSRP_117 | 无效 | dBm |
| RSRP_118 | 无效 | dBm |
| RSRP_119 | 无效 | dBm |
| RSRP_120 | 无效 | dBm |
| RSRP_121 | 无效 | dBm |
| RSRP_122 | 无效 | dBm |
| RSRP_123 | 无效 | dBm |
| RSRP_124 | 无效 | dBm |
| RSRP_125 | 无效 | dBm |
| RSRP_126 | 无效 | dBm |
| RSRP_127 | 无穷 | dBm |
| 上报值 | L1 RSRP | 单位 |
| RSRP_0 | 负无穷 | dBm |
| RSRP_1 | 无效 | dBm |
| RSRP_2 | 无效 | dBm |
| RSRP_3 | 无效 | dBm |
| RSRP_4 | 无效 | dBm |
| RSRP_5 | 无效 | dBm |
| RSRP_6 | 无效 | dBm |
| RSRP_7 | 无效 | dBm |
| RSRP_8 | 无效 | dBm |
| RSRP_9 | 无效 | dBm |
| RSRP_10 | 无效 | dBm |
| RSRP_11 | 无效 | dBm |
| RSRP_12 | 无效 | dBm |
| RSRP_13 | 无效 | dBm |
| RSRP_14 | 无效 | dBm |
| RSRP_15 | 无效 | dBm |
| RSRP_16 | RSRP<-140 | dBm |
| RSRP_17 | -140≤RSRP<-139 | dBm |
| RSRP_18 | -139≤RSRP<-138 | dBm |
| … | … | |
| RSRP_111 | -46≤RSRP<-45 | dBm |
| RSRP_112 | -45≤RSRP<-44 | dBm |
| RSRP_113 | -44≤RSRP | dBm |
| RSRP_114 | 无效 | dBm |
| RSRP_115 | 无效 | dBm |
| RSRP_116 | 无效 | dBm |
| RSRP_117 | 无效 | dBm |
| RSRP_118 | 无效 | dBm |
| RSRP_119 | 无效 | dBm |
| RSRP_120 | 无效 | dBm |
| RSRP_121 | 无效 | dBm |
| RSRP_122 | 无效 | dBm |
| RSRP_123 | 无效 | dBm |
| RSRP_124 | 无效 | dBm |
| RSRP_125 | 无效 | dBm |
| RSRP_126 | 无效 | dBm |
| RSRP127 | 无效 | dBm |
| 上报值 | L1 RSRP | 单位 |
| RSRP_0 | 无效 | dBm |
| RSRP_1 | 无效 | dBm |
| RSRP_2 | 无效 | dBm |
| RSRP_3 | 无效 | dBm |
| RSRP_4 | 无效 | dBm |
| RSRP_5 | 无效 | dBm |
| RSRP_6 | 无效 | dBm |
| RSRP_7 | 无效 | dBm |
| RSRP_8 | 无效 | dBm |
| RSRP_9 | 无效 | dBm |
| RSRP_10 | 无效 | dBm |
| RSRP_11 | 无效 | dBm |
| RSRP_12 | 无效 | dBm |
| RSRP_13 | 无效 | dBm |
| RSRP_14 | 无效 | dBm |
| RSRP_15 | 无效 | dBm |
| RSRP_16 | RSRP<-140 | dBm |
| RSRP_17 | -140≤RSRP<-139 | dBm |
| RSRP_18 | -139≤RSRP<-138 | dBm |
| … | … | |
| RSRP_111 | -46≤RSRP<-45 | dBm |
| RSRP_112 | -45≤RSRP<-44 | dBm |
| RSRP_113 | -44≤RSRP | dBm |
| RSRP_114 | 无效 | dBm |
| RSRP_115 | 无效 | dBm |
| RSRP_116 | 无效 | dBm |
| RSRP_117 | 无效 | dBm |
| RSRP_118 | 无效 | dBm |
| RSRP_119 | 无效 | dBm |
| RSRP_120 | 无效 | dBm |
| RSRP_121 | 无效 | dBm |
| RSRP_122 | 无效 | dBm |
| RSRP_123 | 无效 | dBm |
| RSRP_124 | 无效 | dBm |
| RSRP_125 | 无效 | dBm |
| RSRP_126 | 无效 | dBm |
| RSRP_127 | 无穷 | dBm |
Claims (73)
- 一种无线通信的方法,其特征在于,包括:第一终端设备使用空域发送滤波器向第二终端设备发送M个信道状态信息参考信号CSI-RS,所述M个CSI-RS用于选取目标空域发送滤波器;其中,所述M个CSI-RS对应目标CSI-RS资源集合中的多个CSI-RS资源,M为正整数。
- 如权利要求1所述的方法,其特征在于,所述方法还包括:所述第一终端设备接收所述第二终端设备发送的第一信息;其中,所述第一信息包括目标CSI上报量,所述目标CSI上报量包括以下至少之一:CSI-RS资源指示CRI,CRI和参考信号接收功率RSRP,CRI和接收信号强度指示SINR。
- 如权利要求2所述的方法,其特征在于,所述第一信息包括N个CSI-RS资源的索引,或者,所述第一信息用于确定N个CSI-RS资源的索引,所述N个CSI-RS资源为所述第二终端设备根据接收到的CSI-RS进行测量得到的测量结果确定的,N为所述第二终端设备需要反馈或上报的CSI-RS资源的数量,N为正整数,且N≤M。
- 如权利要求3所述的方法,其特征在于,所述N个CSI-RS资源的索引按照所述N个CSI-RS资源对应的测量结果从高到低的顺序排列,或者,所述N个CSI-RS资源的索引按照所述N个CSI-RS资源对应的测量结果从低到高的顺序排列。
- 如权利要求3或4所述的方法,其特征在于,所述第一信息还包括第一测量信息,所述第一测量信息用于指示所述N个CSI-RS资源对应的测量结果。
- 如权利要求5所述的方法,其特征在于,所述N个CSI-RS资源对应的测量结果大于或等于第一门限值。
- 如权利要求5或6所述的方法,其特征在于,所述N个CSI-RS资源对应于所述第二终端设备接收到的CSI-RS按照测量结果从高到低的顺序排列的前N个CSI-RS。
- 如权利要求5所述的方法,其特征在于,所述N个CSI-RS资源包括N1个第一类CSI-RS资源和N2个第二类CSI-RS资源;其中,所述N1个第一类CSI-RS资源对应于所述第二终端设备接收到的CSI-RS,或者,所述N1个第一类CSI-RS资源对应于所述第二终端设备接收到的并且测量结果大于或等于第一门限值的CSI-RS,所述N2个第二类CSI-RS资源对应的索引由所述N1个第一类CSI-RS资源中的至少一个CSI-RS资源确定,或者,所述N2个第二类CSI-RS资源对应的索引由所述多个CSI-RS资源中除所述N1个第一类CSI-RS资源之外的CSI-RS资源中的至少一个CSI-RS资源确定,所述N2个第二类CSI-RS资源对应的测量结果为缺省值,N1和N2为正整数,N1+N2=N。
- 如权利要求8所述的方法,其特征在于,所述缺省值为预配置或协议约定的,或者,所述缺省值为网络设备配置的,或者,所述缺省值为所述第一终端设备配置给所述第二终端设备的,或者,所述缺省值为所述第二终端设备配置给所述第一终端设备的,或者,所述缺省值为第三终端设备配置的,所述第三终端设备为所述第一终端设备和所述第二终端设备所在的通信组的组头终端。
- 如权利要求8或9所述的方法,其特征在于,所述缺省值小于或等于第二门限值,或者,所述缺省值对应于负无穷大或无穷大。
- 如权利要求5至10中任一项所述的方法,其特征在于,所述第一测量信息包括所述N个CSI-RS资源分别对应的测量结果的量化索引信息。
- 如权利要求5至7中任一项所述的方法,其特征在于,所述第一测量信息包括第一测量结果的量化索引信息以及N-1个差分量化索引信息,其中,所述第一测量结果对应所述N个CSI-RS资源对应的测量结果中的最高值。
- 如权利要求2所述的方法,其特征在于,所述第一信息包括N3个CSI-RS资源的索引,所述N3个CSI-RS资源为所述第二终端设备根据接收到的CSI-RS进行测量得到的测量结果确定的,N3<N,N为所述第二终端设备需要反馈或上报的CSI-RS资源的数量,N3和N的正整数,且N≤M。
- 如权利要求13所述的方法,其特征在于,所述N3个CSI-RS资源对应所述第二终端设备接收到的CSI-RS,或者,所述N3个CSI-RS资源对应所述第二终端设备接收到的并且对应的测量结果大于或等于第一门限值的CSI-RS。
- 如权利要求13或14所述的方法,其特征在于,所述N3个CSI-RS资源的索引按照所述N3个CSI-RS资源对应的测量结果从高到低的顺序排列,或者,所述N3个CSI-RS资源的索引按照所述N3个CSI-RS资源对应的测量结果从低到高的顺序排列。
- 如权利要求13至15中任一项所述的方法,其特征在于,所述第一信息还包括第二测量信息, 所述第二测量信息用于指示所述N3个CSI-RS资源对应的测量结果。
- 如权利要求16所述的方法,其特征在于,所述第二测量信息包括所述N3个CSI-RS资源分别对应的测量结果的量化索引信息。
- 如权利要求16或17所述的方法,其特征在于,所述第二测量信息包括第二测量结果的量化索引信息以及N3-1个差分量化索引信息,其中,所述第二测量结果对应所述N3个CSI-RS资源对应的测量结果中的最高值。
- 如权利要求13至18中任一项所述的方法,其特征在于,所述第一信息还包括第一指示信息,所述第一指示信息用于指示N3的取值。
- 根据权利要求3至19中任一项所述的方法,其特征在于,所述第一信息还包括第二指示信息,所述第二指示信息用于指示N的取值,或者,所述第二指示信息用于指示所述第二终端设备向所述第一终端设备反馈的CSI-RS资源的数量,或者,所述第二指示信息用于指示所述第二终端设备向所述第一终端设备反馈的测量结果的数量。
- 根据权利要求3至19中任一项所述的方法,其特征在于,所述方法还包括:所述第一终端设备获取第三指示信息,所述第三指示信息用于指示所述N的取值。
- 根据权利要求21所述的方法,其特征在于,所述第一终端设备获取第三指示信息,包括:所述第一终端设备根据预配置信息获取所述第三指示信息;或者,所述第一终端设备接收网络设备发送的所述第三指示信息;或者,所述第一终端设备接收所述第二终端设备发送的所述第三指示信息;或者,所述第一终端设备接收第三终端设备发送的所述第三指示信息,所述第三终端设备为所述第一终端设备和所述第二终端设备所在的通信组的组头终端。
- 根据权利要求22所述的方法,其特征在于,所述方法还包括:所述第一终端向所述第二终端发送第四指示信息,所述第四指示信息用于指示所述N的取值。
- 如权利要求3至23中任一项所述的方法,其特征在于,所述测量结果包括侧行RSRP和/或侧行SINR。
- 如权利要求2至24中任一项所述的方法,其特征在于,所述第一信息通过以下之一承载:侧行控制信息SCI、媒体接入控制控制元素MAC CE、侧行反馈信道PSFCH、PC5-无线资源控制RRC信令。
- 如权利要求2至25中任一项所述的方法,其特征在于,所述方法还包括:所述第一终端设备根据所述第一信息,选取目标CSI-RS资源,所述目标CSI-RS资源对应的空域发送滤波器为所述目标空域发送滤波器。
- 如权利要求26所述的方法,其特征在于,所述方法还包括:所述第一终端设备向所述第二终端设备发送第一侧行配置信息,所述第一侧行配置信息用于配置至少一个传输配置指示TCI状态,所述至少一个TCI状态包括第一TCI状态,所述第一TCI状态中包括的参考信号为所述目标CSI-RS资源对应的CSI-RS。
- 如权利要求27中所述的方法,其特征在于,所述第一TCI状态中包括的准共站址QCL类型为QCL-TypeD。
- 如权利要求27或28所述的方法,其特征在于,所述方法还包括:所述第一终端设备向所述第二终端设备发送第五指示信息,所述第五指示信息用于指示所述第一TCI状态。
- 如权利要求26至29中任一项所述的方法,其特征在于,所述方法还包括:所述第一终端设备使用所述目标空域发送滤波器向所述第二终端设备发送侧行数据。
- 如权利要求1所述的方法,其特征在于,所述方法还包括:所述第一终端设备接收所述第二终端设备发送的第二信息;其中,所述第二信息用于指示所述第二终端设备未检测到CSI-RS,或者,所述第二信息用于指示所述第二终端设备检测到CSI-RS对应的测量结果都低于第一门限值,或者,所述第二信息用于指示所述第一终端设备重新发送所述M个CSI-RS。
- 如权利要求31所述的方法,其特征在于,所述方法还包括:所述第一终端设备重新使用空域发送滤波器分别所述第二终端设备发送所述M个CSI-RS。
- 如权利要求6、8、14或31所述的方法,其特征在于,所述第一门限值为预配置或协议约定的,或者,所述第一门限值为网络设备配置的,或者,所述第一门限值为所述第一终端设备配置的。
- 如权利要求10所述的方法,其特征在于,所述第二门限值为预配置或协议约定的,或者,所述第二门限值为网络设备配置的,或者,所述第二门限值为所述第一终端设备配置的。
- 一种无线通信的方法,其特征在于,包括:第二终端设备接收第一终端设备使用空域发送滤波器发送的M个信道状态信息参考信号CSI-RS,其中,所述M个CSI-RS用于选取目标空域发送滤波器,所述M个CSI-RS对应目标CSI-RS资源集合中的多个CSI-RS资源,M为正整数。
- 如权利要求35所述的方法,其特征在于,所述方法还包括:所述第二终端设备向所述第一终端设备发送第一信息;其中,所述第一信息包括目标CSI上报量,所述目标CSI上报量包括以下至少之一:CSI-RS资源指示CRI,CRI和参考信号接收功率RSRP,CRI和接收信号强度指示SINR。
- 如权利要求36所述的方法,其特征在于,所述第一信息包括N个CSI-RS资源的索引,或者,所述第一信息用于确定N个CSI-RS资源的索引,所述N个CSI-RS资源为所述第二终端设备根据接收到的CSI-RS进行测量得到的测量结果确定的,N为所述第二终端设备需要反馈或上报的CSI-RS资源的数量,N为正整数,且N≤M。
- 如权利要求37所述的方法,其特征在于,所述N个CSI-RS资源的索引按照所述N个CSI-RS资源对应的测量结果从高到低的顺序排列,或者,所述N个CSI-RS资源的索引按照所述N个CSI-RS资源对应的测量结果从低到高的顺序排列。
- 如权利要求37或38所述的方法,其特征在于,所述第一信息还包括第一测量信息,所述第一测量信息用于指示所述N个CSI-RS资源对应的测量结果。
- 如权利要求39所述的方法,其特征在于,所述N个CSI-RS资源对应的测量结果大于或等于第一门限值。
- 如权利要求39或40所述的方法,其特征在于,所述N个CSI-RS资源对应于所述第二终端设备接收到的CSI-RS按照测量结果从高到低的顺序排列的前N个CSI-RS。
- 如权利要求39所述的方法,其特征在于,所述N个CSI-RS资源包括N1个第一类CSI-RS资源和N2个第二类CSI-RS资源;其中,所述N1个第一类CSI-RS资源对应于所述第二终端设备接收到的CSI-RS,或者,所述N1个第一类CSI-RS资源对应于所述第二终端设备接收到的并且测量结果大于或等于第一门限值的CSI-RS,所述N2个第二类CSI-RS资源对应的索引由所述N1个第一类CSI-RS资源中的至少一个CSI-RS资源确定,或者,所述N2个第二类CSI-RS资源对应的索引由所述多个CSI-RS资源中除所述N1个第一类CSI-RS资源之外的CSI-RS资源中的至少一个CSI-RS资源确定,所述N2个第二类CSI-RS资源对应的测量结果为缺省值,N1和N2为正整数,N1+N2=N。
- 如权利要求42所述的方法,其特征在于,所述缺省值为预配置或协议约定的,或者,所述缺省值为网络设备配置的,或者,所述缺省值为所述第一终端设备配置给所述第二终端设备的,或者,所述缺省值为所述第二终端设备配置给所述第一终端设备的,或者,所述缺省值为第三终端设备配置的,所述第三终端设备为所述第一终端设备和所述第二终端设备所在的通信组的组头终端。
- 如权利要求42或43所述的方法,其特征在于,所述缺省值小于或等于第二门限值,或者,所述缺省值对应于负无穷大或无穷大。
- 如权利要求39至44中任一项所述的方法,其特征在于,所述第一测量信息包括所述N个CSI-RS资源分别对应的测量结果的量化索引信息。
- 如权利要求39至41中任一项所述的方法,其特征在于,所述第一测量信息包括第一测量结果的量化索引信息以及N-1个差分量化索引信息,其中,所述第一测量结果对应所述N个CSI-RS资源对应的测量结果中的最高值。
- 如权利要求36所述的方法,其特征在于,所述第一信息包括N3个CSI-RS资源的索引,所述N3个CSI-RS资源为所述第二终端设备根据接收到的CSI-RS进行测量得到的测量结果确定的,N3<N,N为所述第二终端设备需要反馈或上报的CSI-RS资源的数量,N3和N的正整数,且N≤M。
- 如权利要求47所述的方法,其特征在于,所述N3个CSI-RS资源对应所述第二终端设备接收到的CSI-RS,或者,所述N3个CSI-RS资源对应所述第二终端设备接收到的并且对应的测量结果大于或等于第一门限值的CSI-RS。
- 如权利要求47或48所述的方法,其特征在于,所述N3个CSI-RS资源的索引按照所述N3个CSI-RS资源对应的测量结果从高到低的顺序排列,或者,所述N3个CSI-RS资源的索引按照所述N3个CSI-RS资源对应的测量结果从低到高的顺序排列。
- 如权利要求47至49中任一项所述的方法,其特征在于,所述第一信息还包括第二测量信息,所述第二测量信息用于指示所述N3个CSI-RS资源对应的测量结果。
- 如权利要求50所述的方法,其特征在于,所述第二测量信息包括所述N3个CSI-RS资源分 别对应的测量结果的量化索引信息。
- 如权利要求50或51所述的方法,其特征在于,所述第二测量信息包括第二测量结果的量化索引信息以及N3-1个差分量化索引信息,其中,所述第二测量结果对应所述N3个CSI-RS资源对应的测量结果中的最高值。
- 如权利要求47至52中任一项所述的方法,其特征在于,所述第一信息还包括第一指示信息,所述第一指示信息用于指示N3的取值。
- 根据权利要求37至53中任一项所述的方法,其特征在于,所述第一信息还包括第二指示信息,所述第二指示信息用于指示N的取值,或者,所述第二指示信息用于指示所述第二终端设备向所述第一终端设备反馈的CSI-RS资源的数量,或者,所述第二指示信息用于指示所述第二终端设备向所述第一终端设备反馈的测量结果的数量。
- 根据权利要求37至53中任一项所述的方法,其特征在于,所述方法还包括:所述第二终端设备获取第四指示信息,所述第四指示信息用于指示所述N的取值。
- 根据权利要求55所述的方法,其特征在于,所述第二终端设备获取第四指示信息,包括:所述第二终端设备根据预配置信息获取所述第四指示信息;或者,所述第二终端设备接收网络设备发送的所述第四指示信息;或者,所述第二终端设备接收所述第一终端设备发送的所述第四指示信息;或者,所述第二终端设备接收第三终端设备发送的所述第四指示信息,所述第三终端设备为所述第一终端设备和所述第二终端设备所在的通信组的组头终端。
- 如权利要求37至56中任一项所述的方法,其特征在于,所述测量结果包括侧行RSRP和/或侧行SINR。
- 如权利要求36至57中任一项所述的方法,其特征在于,所述第一信息通过以下之一承载:侧行控制信息SCI、媒体接入控制控制元素MAC CE、侧行反馈信道PSFCH、PC5-无线资源控制RRC信令。
- 如权利要求36至58中任一项所述的方法,其特征在于,所述方法还包括:所述第二终端设备接收所述第一终端设备发送的第一侧行配置信息,所述第一侧行配置信息用于配置至少一个传输配置指示TCI状态,所述至少一个TCI状态包括第一TCI状态,所述第一TCI状态中包括的参考信号为目标CSI-RS资源对应的CSI-RS,所述目标CSI-RS资源为所述第一终端设备根据所述第一信息确定的,且所述目标CSI-RS资源对应的空域发送滤波器为所述目标空域发送滤波器。
- 如权利要求59所述的方法,其特征在于,所述第一TCI状态中包括的准共站址QCL类型为QCL-TypeD。
- 如权利要求59或60所述的方法,其特征在于,所述方法还包括:所述第二终端设备接收所述第一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所述第一TCI状态。
- 如权利要求59至61中任一项所述的方法,其特征在于,所述方法还包括:所述第二终端设备接收所述第一终端设备使用所述目标CSI-RS资源对应的目标空域发送滤波器发送的侧行数据。
- 如权利要求35所述的方法,其特征在于,所述方法还包括:所述第二终端设备向所述第一终端设备发送第二信息;其中,所述第二信息用于指示所述第二终端设备未检测到CSI-RS,或者,所述第二信息用于指示所述第二终端设备检测到CSI-RS对应的测量结果都低于第一门限值,或者,所述第二信息用于指示所述第一终端设备重新发送所述M个CSI-RS。
- 如权利要求63所述的方法,其特征在于,所述方法还包括:所述第二终端设备接收所述第一终端设备重新发送的所述M个CSI-RS。
- 如权利要求40、42、48或63所述的方法,其特征在于,所述第一门限值为预配置或协议约定的,或者,所述第一门限值为网络设备配置的,或者,所述第一门限值为所述第一终端设备配置的。
- 如权利要求44所述的方法,其特征在于,所述第二门限值为预配置或协议约定的,或者,所述第二门限值为网络设备配置的,或者,所述第二门限值为所述第一终端设备配置的。
- 一种终端设备,其特征在于,所述终端设备为第一终端设备,所述终端设备包括:通信单元,用于使用空域发送滤波器向第二终端设备发送M个信道状态信息参考信号CSI-RS,所述M个CSI-RS用于选取目标空域发送滤波器;其中,所述M个CSI-RS对应目标CSI-RS资源集合中的多个CSI-RS资源,M为正整数。
- 一种终端设备,其特征在于,所述终端设备为第二终端设备,所述终端设备包括:通信单元,用于接收第一终端设备使用空域发送滤波器发送的M个信道状态信息参考信号CSI-RS,其中,所述M个CSI-RS用于选取目标空域发送滤波器,所述M个CSI-RS对应目标CSI-RS资源集合中的多个CSI-RS资源,M为正整数。
- 一种终端设备,其特征在于,包括:处理器和存储器,该存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,执行如权利要求1至34中任一项所述的方法,或者,执行如权利要求35至66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34中任一项所述的方法,或者,执行如权利要求35至66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34中任一项所述的方法,或者,执行如权利要求35至66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,该计算机程序指令使得计算机执行如权利要求1至34中任一项所述的方法,或者,执行如权利要求35至66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34中任一项所述的方法,或者,执行如权利要求35至66中任一项所述的方法。
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