A channel measurement method and a communication device

Abstract

Embodiments of the present application provide a channel measurement method and a communication device, which are applied to the technical field of communication. The method comprises: receiving configuration information sent by a network device; the configuration information is used for configuring relative spatial position relationships among a plurality of first reference signals, relative spatial position relationships among a plurality of second reference signals, and a relative spatial position relationship between the first reference signal and the second reference signal; a coverage range corresponding to the first reference signal is greater than a coverage range corresponding to the second reference signal; measuring the plurality of first reference signals; based on a measurement result corresponding to the plurality of first reference signals and the relative spatial position relationships configured by the configuration information, measuring a target reference signal in the plurality of second reference signals; and sending identification information of the target reference signal and channel state information corresponding to the target reference signal to the network device. Based on the method, the downlink channel measurement accuracy can be improved.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a channel measurement method and communication device. Background Technology

[0002] To transmit data to the terminal, the base station needs to perform precoding on the digital port and select appropriate coding and modulation orders. The purpose of precoding is to better match the antenna (or beam) to the channel, ensuring better signal quality and less interference when the transmitted data reaches the terminal. Good coding and modulation orders maximize the channel's transmission capacity while ensuring reliable data transmission. The settings for precoding and the modulation and coding scheme (MCS) need to be determined based on channel state information. A common method for determining channel state information is for the base station to transmit a reference signal, the terminal to measure this reference signal to determine the downlink channel state information, and the terminal to feed back this downlink channel state information to the base station.

[0003] With the evolution of multiple-input multiple-output (MIMO) technology, the antenna scale on the base station side has further increased, requiring terminals to measure more reference signals to complete downlink channel measurements for large-scale arrays. For some terminals, due to capability limitations, they can only complete downlink channel measurements for a very small number of antenna ports in a single operation.

[0004] In one approach, low-capability terminals can report downlink channel state information for the entire array through multiple downlink channel measurements and feedbacks. However, this leads to excessively long downlink channel measurement times (e.g., up to dozens of measurement feedbacks), preventing users from achieving rapid access in certain scenarios. Furthermore, the excessively long downlink channel measurement time also causes the previously measured downlink channel state information to become outdated (i.e., there is an error between the previously measured downlink channel state information and the current downlink channel state information due to latency), and the feedback overhead for measurements at all antenna ports is enormous.

[0005] To address the significant feedback overhead of full-antenna-port measurements, base stations can use uplink channel state information (CSSI) measurements to indicate which antenna ports have higher energy levels to the terminal. This allows the terminal to perform measurements on key antenna ports, and algorithms are then used to accurately reconstruct the downlink CSSI for all antenna ports. However, even with high bandwidth, uplink CSSI measurements require numerous, lengthy runs, leading to severe aging of the CSSI data. Furthermore, the low signal-to-noise ratio of the received uplink CSSI data results in low accuracy and significant errors in antenna port selection. This ultimately leads to low accuracy in downlink channel measurements. Summary of the Invention

[0006] This application provides a channel measurement method and communication device, which helps to improve the accuracy of downlink channel measurement.

[0007] In a first aspect, embodiments of this application provide a channel measurement method, the method comprising:

[0008] The system receives configuration information sent by a network device; this configuration information is used to configure the relative spatial position relationships between multiple first reference signals, multiple second reference signals, and the relative spatial position relationships between the first and second reference signals; the coverage area corresponding to the first reference signal is greater than the coverage area corresponding to the second reference signal; the system measures the multiple first reference signals; based on the measurement results corresponding to the multiple first reference signals, the relative spatial position relationships between the multiple first reference signals, the relative spatial position relationships between the multiple second reference signals, and the relative spatial position relationships between the first and second reference signals, the system measures the target reference signal among the multiple second reference signals; and the system sends the identification information of the target reference signal and the channel state information corresponding to the target reference signal to the network device.

[0009] Based on the method described in the first aspect, a target reference signal to be measured can be quickly selected from multiple second reference signals based on the channel state information corresponding to the first reference signal, the relative spatial position relationships between the first reference signals, the relative spatial position relationships between the second reference signals, and the relative spatial position relationships between the first and second reference signals, in order to recover the channel state information corresponding to the full antenna port of the second reference signal. This eliminates the need for lengthy uplink channel state measurements to select the target reference signal from multiple second reference signals. Therefore, the method described in the first aspect is beneficial for improving the accuracy of downlink channel measurements.

[0010] In one possible embodiment, the configuration information includes a first parameter, a second parameter, and a logical sequence number of a plurality of first reference signals; the first parameter indicates the number of first reference signals in the horizontal direction among the plurality of first reference signals, and the second parameter indicates the number of first reference signals in the vertical direction among the plurality of first reference signals.

[0011] Based on this possible embodiment, the relative spatial positional relationship between multiple first reference signals can be accurately configured.

[0012] In one possible embodiment, the logical sequence numbers of the first parameter, the second parameter, and the plurality of first reference signals are located in the resource set information of the first reference signals. Based on this possible embodiment, configuring the logical sequence numbers of the first parameter, the second parameter, and the plurality of first reference signals in the resource set information, rather than configuring the logical sequence numbers of the first parameter, the second parameter, and the plurality of first reference signals in each resource information, is beneficial for saving transmission overhead.

[0013] In one possible embodiment, the configuration information includes a third parameter, a fourth parameter, and a logical sequence number of the second reference signal corresponding to each first reference signal; the third parameter indicates the number of second reference signals in the horizontal direction within the coverage area of ​​the corresponding first reference signal, and the fourth parameter indicates the number of second reference signals in the vertical direction within the coverage area of ​​the corresponding first reference signal.

[0014] Based on this possible embodiment, the relative spatial positional relationship between multiple second reference signals can be accurately configured.

[0015] In one possible embodiment, the third parameter, the fourth parameter, and the logical sequence number of the second reference signal corresponding to each first reference signal are located in the resource set information of the first reference signal, or in the resource information of the first reference signal.

[0016] For example, if the logical sequence numbers of the third, fourth, or second reference signals corresponding to each first reference signal are the same, the logical sequence numbers of the third, fourth, and second reference signals corresponding to each first reference signal can be configured in the resource set information, which helps to save transmission overhead. If the logical sequence numbers of the third, fourth, or second reference signals corresponding to different first reference signals are different, the logical sequence numbers of the third, fourth, and second reference signals corresponding to the first reference signals can be configured in the resource information.

[0017] In one possible embodiment, the configuration information includes a fifth parameter, a sixth parameter, and a set of logical numbers for all the second reference signals. The fifth parameter indicates the number of second reference signals in the horizontal direction among all the second reference signals, and the sixth parameter indicates the number of second reference signals in the vertical direction among all the second reference signals.

[0018] Based on this possible embodiment, the relative spatial positional relationship between multiple second reference signals can be accurately configured.

[0019] In one possible embodiment, the logical sequence numbers of the fifth parameter, the sixth parameter, and all second reference signals are located in the resource configuration corresponding to the second reference signal, or in the resource set information of the second reference signal.

[0020] Based on this possible embodiment, configuring the logical sequence numbers of the fifth parameter, the sixth parameter, and all second reference signals in the resource configuration or resource set information, instead of configuring the logical sequence numbers of the fifth parameter, the sixth parameter, and all second reference signals in each resource information, is beneficial for saving transmission overhead.

[0021] In one possible embodiment, the configuration information includes a seventh parameter, an eighth parameter, and a logical sequence number of the second reference signal corresponding to each resource set of the second reference signal; the seventh parameter indicates the number of second reference signals in the horizontal direction in the corresponding resource set, and the eighth parameter indicates the number of second reference signals in the vertical direction in the corresponding resource set.

[0022] The configuration information also includes the ninth parameter, the tenth parameter, and a set of logical numbers for all resource sets of the second reference signal. The ninth parameter indicates the number of resource sets in the horizontal direction in all resource sets of the second reference signal, and the tenth parameter indicates the number of resource sets in the vertical direction in all resource sets of the second reference signal.

[0023] Based on this possible embodiment, the relative spatial positional relationship between multiple second reference signals can be accurately configured.

[0024] In one possible embodiment, the seventh parameter, the eighth parameter, and the logical sequence number of the second reference signal corresponding to each resource set of the second reference signal are located in the resource configuration or resource set information of the second reference signal.

[0025] For example, when the seventh parameter, eighth parameter, and logical sequence number of the second reference signal are the same for each resource set of the second reference signal, the seventh parameter, eighth parameter, and logical sequence number of the second reference signal can be configured in the resource configuration, which helps to save transmission overhead. When the seventh parameter, eighth parameter, and logical sequence number of the second reference signal are different for different resource sets of the second reference signal, the seventh parameter, eighth parameter, and logical sequence number of the second reference signal can be configured in the resource set information.

[0026] In one possible embodiment, the logical sequence numbers of all resource sets of the ninth parameter, the tenth parameter, and the second reference signal are located in the resource configuration corresponding to the second reference signal.

[0027] Based on this possible embodiment, configuring the logical sequence number of all resource sets of the ninth parameter, tenth parameter, and second reference signal in the resource configuration, instead of configuring the logical sequence number of all resource sets of the ninth parameter, tenth parameter, and second reference signal in each resource set information or resource information, is beneficial to saving transmission overhead.

[0028] In one possible embodiment, the configuration information includes an eleventh parameter corresponding to each resource set of the second reference signal, the eleventh parameter indicating the logical sequence number of the first reference signal corresponding to the resource set of the second reference signal, and / or, the relative spatial strength between the resource set of the second reference signal and the corresponding first reference signal; or,

[0029] The configuration information includes an eleventh parameter corresponding to each second reference signal. The eleventh parameter is used to indicate the logical sequence number of the first reference signal corresponding to the second reference signal, and / or the relative spatial strength between the second reference signal and the corresponding first reference signal.

[0030] Based on this possible embodiment, the relative spatial position relationship between the first reference signal and the second reference signal can be accurately configured.

[0031] In one possible embodiment, the eleventh parameter is located in the resource set information of the second reference signal; or, the eleventh parameter is located in the resource information of the second reference signal.

[0032] Based on this possible implementation, the eleventh parameter can be configured in existing resource set information or resource information without adding additional signaling to configure the eleventh parameter, thus reducing the implementation complexity.

[0033] In one possible embodiment, the first reference signal is a synchronization signal block (SSB), and the second reference signal is a channel state information reference signal (CSI-RS); or, the first reference signal is CSI-RS, and the second reference signal is CSI-RS.

[0034] In one possible embodiment, if the configuration information includes a third parameter, a fourth parameter, and a logical sequence number of the second reference signal corresponding to each first reference signal, the identification information of the target reference signal may include the logical sequence number X of the first reference signal. i And the logic number Y of the second reference signal corresponding to the first reference signal. j .

[0035] In one possible embodiment, if the configuration information includes a fifth parameter, a sixth parameter, and a set of logical sequence numbers for all second reference signals, the identification information of the target reference signal may include the logical sequence number Y of the target reference signal. j .

[0036] If the configuration information includes the seventh parameter, the eighth parameter, and the logical sequence number of the second reference signal for each resource set corresponding to the second reference signal, the identification information of the target reference signal may include the logical sequence number CRI#k of the resource set of the second reference signal and the logical sequence number Y of the second reference signal. j .

[0037] Secondly, embodiments of this application provide a channel measurement method, the method comprising:

[0038] The system sends configuration information to the terminal; this configuration information is used to configure the relative spatial position relationship between multiple first reference signals, the relative spatial position relationship between multiple second reference signals, and the relative spatial position relationship between the first reference signal and the second reference signal; the coverage area corresponding to the first reference signal is greater than the coverage area corresponding to the second reference signal; the system sends the multiple first reference signals; the system sends the multiple second reference signals; and the system receives the identification information of the target reference signal and the channel state information corresponding to the target reference signal sent by the terminal. The target reference signal is determined from the multiple second reference signals based on the measurement results corresponding to the multiple first reference signals, the relative spatial position relationship between the multiple first reference signals, the relative spatial position relationship between the multiple second reference signals, and the relative spatial position relationship between the first reference signal and the second reference signal.

[0039] In one possible embodiment, the configuration information includes a first parameter, a second parameter, and a logical sequence number of a plurality of first reference signals; the first parameter indicates the number of first reference signals in the horizontal direction among the plurality of first reference signals, and the second parameter indicates the number of first reference signals in the vertical direction among the plurality of first reference signals.

[0040] In one possible embodiment, the logical sequence numbers of the first parameter, the second parameter, and the plurality of first reference signals are located in the resource set information of the first reference signals.

[0041] In one possible embodiment, the configuration information includes a third parameter, a fourth parameter, and a logical sequence number of the second reference signal corresponding to each first reference signal; the third parameter indicates the number of second reference signals in the horizontal direction within the coverage area of ​​the corresponding first reference signal, and the fourth parameter indicates the number of second reference signals in the vertical direction within the coverage area of ​​the corresponding first reference signal.

[0042] In one possible embodiment, the third parameter, the fourth parameter, and the logical sequence number of the second reference signal corresponding to each first reference signal are located in the resource set information of the first reference signal, or in the resource information of the first reference signal.

[0043] In one possible embodiment, the configuration information includes a fifth parameter, a sixth parameter, and a set of logical numbers for all the second reference signals. The fifth parameter indicates the number of second reference signals in the horizontal direction among all the second reference signals, and the sixth parameter indicates the number of second reference signals in the vertical direction among all the second reference signals.

[0044] In one possible embodiment, the logical sequence numbers of the fifth parameter, the sixth parameter, and all second reference signals are located in the resource configuration corresponding to the second reference signal, or in the resource set information of the second reference signal.

[0045] In one possible embodiment, the configuration information includes a seventh parameter, an eighth parameter, and a logical sequence number of the second reference signal corresponding to each resource set of the second reference signal; the seventh parameter indicates the number of second reference signals in the horizontal direction in the corresponding resource set, and the eighth parameter indicates the number of second reference signals in the vertical direction in the corresponding resource set.

[0046] The configuration information also includes the ninth parameter, the tenth parameter, and a set of logical numbers for all resource sets of the second reference signal. The ninth parameter indicates the number of resource sets in the horizontal direction in all resource sets of the second reference signal, and the tenth parameter indicates the number of resource sets in the vertical direction in all resource sets of the second reference signal.

[0047] In one possible embodiment, the seventh parameter, the eighth parameter, and the logical sequence number of the second reference signal corresponding to each resource set of the second reference signal are located within the resource set information of the second reference signal; and / or,

[0048] The logical sequence numbers of all resource sets of the ninth parameter, the tenth parameter, and the second reference signal are located in the resource configuration corresponding to the second reference signal.

[0049] In one possible embodiment, the configuration information includes an eleventh parameter corresponding to each resource set of the second reference signal, the eleventh parameter indicating the logical sequence number of the first reference signal corresponding to the resource set of the second reference signal, and / or, the relative spatial strength between the resource set of the second reference signal and the corresponding first reference signal; or,

[0050] The configuration information includes an eleventh parameter corresponding to each second reference signal. The eleventh parameter is used to indicate the logical sequence number of the first reference signal corresponding to the second reference signal, and / or the relative spatial strength between the second reference signal and the corresponding first reference signal.

[0051] In one possible embodiment, the eleventh parameter is located in the resource set information of the second reference signal; or, the eleventh parameter is located in the resource information of the second reference signal.

[0052] In one possible embodiment, the first reference signal is a synchronization signal block (SSB), and the second reference signal is a channel state information reference signal (CSI-RS); or, the first reference signal is CSI-RS, and the second reference signal is CSI-RS.

[0053] The beneficial effects in the second aspect can be found in the beneficial effects in the first aspect, and will not be repeated here.

[0054] In one possible embodiment, if the configuration information includes a third parameter, a fourth parameter, and a logical sequence number of the second reference signal corresponding to each first reference signal, the identification information of the target reference signal may include the logical sequence number X of the first reference signal.i And the logic number Y of the second reference signal corresponding to the first reference signal. j .

[0055] In one possible embodiment, if the configuration information includes a fifth parameter, a sixth parameter, and a set of logical sequence numbers for all second reference signals, the identification information of the target reference signal may include the logical sequence number Y of the target reference signal. j .

[0056] If the configuration information includes the seventh parameter, the eighth parameter, and the logical sequence number of the second reference signal for each resource set corresponding to the second reference signal, the identification information of the target reference signal may include the logical sequence number CRI#k of the resource set of the second reference signal and the logical sequence number Y of the second reference signal. j .

[0057] Thirdly, embodiments of this application provide a channel measurement method, the method comprising:

[0058] The system measures multiple first reference signals; sends channel state information corresponding to the multiple first reference signals to the network device; receives resource configuration information of a target reference signal; the target reference signal is determined from the multiple second reference signals based on the measurement results corresponding to the multiple first reference signals, the relative spatial position relationship between the multiple first reference signals, the relative spatial position relationship between the multiple second reference signals, and the relative spatial position relationship between the first reference signal and the second reference signal; measures the target reference signal according to the resource configuration information of the target reference signal; and sends channel state information corresponding to the target reference signal to the network device.

[0059] As can be seen, based on the method described in the third aspect, the target reference signal to be measured can be quickly selected from multiple second reference signals based on the channel state information corresponding to the first reference signal, the relative spatial position relationships between the first reference signals, the relative spatial position relationships between the second reference signals, and the relative spatial position relationships between the first and second reference signals, so as to recover the channel state information corresponding to the full antenna port of the second reference signal. It eliminates the need for long-term uplink channel state measurements to select the target reference signal from multiple second reference signals. Therefore, the method described in the third aspect is beneficial for improving the accuracy of downlink channel measurements.

[0060] In one possible embodiment, the first reference signal is a synchronization signal block (SSB), and the second reference signal is a channel state information reference signal (CSI-RS); or, the first reference signal is CSI-RS, and the second reference signal is CSI-RS.

[0061] Fourthly, embodiments of this application provide a channel measurement method, the method comprising:

[0062] The system transmits multiple first reference signals; receives channel state information corresponding to the multiple first reference signals transmitted by the terminal; based on the measurement results corresponding to the multiple first reference signals, the relative spatial position relationship between the multiple first reference signals, the relative spatial position relationship between the multiple second reference signals, and the relative spatial position relationship between the first reference signals and the second reference signals, the system transmits resource configuration information of a target reference signal among the multiple second reference signals to the terminal; transmits a target reference signal; and receives channel state information corresponding to the target reference signal transmitted by the terminal.

[0063] In one possible embodiment, the first reference signal is a synchronization signal block (SSB), and the second reference signal is a channel state information reference signal (CSI-RS); or, the first reference signal is CSI-RS, and the second reference signal is CSI-RS.

[0064] The beneficial effects of the fourth aspect can be found in the beneficial effects of the third aspect, and will not be elaborated here.

[0065] Fifthly, this application provides a communication device that has the function of implementing any one of the first to fourth aspects above. For example, the communication device includes a module, unit, or means corresponding to the operation involved in the method described in any one of the first to fourth aspects above. The module, unit, or means can be implemented by software, hardware, or a combination of software and hardware.

[0066] Sixthly, this application provides a communication device including an interface circuit and one or more processors. The one or more processors are coupled to a memory. The memory stores part or all of the necessary computer program or instructions for implementing the functions described in any one of the first to fourth aspects. The one or more processors can execute the computer program or instructions, which, when executed, cause the communication device to implement the methods described in any one of the first to fourth aspects. The interface circuit is used to implement communication functions within the communication device and / or communication functions between the communication device and other devices or components.

[0067] In one possible embodiment, the processor is used to communicate with other devices or components through the interface circuit.

[0068] In one possible embodiment, the communication device may further include the memory.

[0069] The aforementioned communication device may be a terminal, or a communication / processing module within a terminal, or a chip within a terminal responsible for communication functions. Alternatively, the aforementioned communication device may be a network device, or a module within a network device (e.g., a circuit, chip, or chip system), or a logical node, logical module, or software capable of implementing all or part of the functions of a network device.

[0070] In a seventh aspect, this application provides a communication system including a terminal and a network device. The terminal can perform the methods described in the first or third aspect above, and the network device can perform the methods described in the second or fourth aspect above.

[0071] Eighthly, this application provides a computer-readable storage medium storing computer-readable instructions, which, when read and executed by a computer, cause the computer to perform the method described in any one of the first to fourth aspects above.

[0072] Ninthly, this application provides a computer program product that, when read and executed by a computer, causes the computer to perform the method described in any one of the first to fourth aspects above. Attached Figure Description

[0073] Figure 1 A possible, non-limiting system schematic diagram provided for an embodiment of this application;

[0074] Figure 2 A schematic diagram of digital beamforming provided for an embodiment of this application;

[0075] Figure 3 A schematic diagram of simulated beamforming provided for an embodiment of this application;

[0076] Figure 4 A schematic diagram of hybrid beamforming provided for an embodiment of this application;

[0078] Figure 5 This is a schematic diagram of an existing downlink channel state information measurement and reporting process;

[0079] Figure 6 A schematic diagram of a resource configuration provided for an embodiment of this application;

[0080] Figure 7 A schematic diagram of a possible application framework in a communication system provided for embodiments of this application;

[0081] Figure 8 A schematic diagram of a neural network provided for an embodiment of this application;

[0082] Figure 9 A schematic flowchart of a channel measurement method provided in an embodiment of this application;

[0083] Figure 10 A schematic diagram illustrating the relative spatial positional relationship between first reference signals provided for an embodiment of this application;

[0084] Figure 11 A schematic diagram illustrating the relative spatial positional relationship between first reference signals provided for an embodiment of this application;

[0085] Figure 12 A schematic diagram illustrating the relative spatial positional relationship between second reference signals provided for embodiments of this application;

[0086] Figure 13 A schematic diagram illustrating the relative spatial positional relationship between second reference signals provided for embodiments of this application;

[0087] Figure 14 A schematic diagram illustrating the relative spatial positional relationship between second reference signals provided for embodiments of this application;

[0088] Figure 15 A schematic diagram illustrating the relative spatial positional relationship between second reference signals provided for embodiments of this application;

[0089] Figure 16 A schematic diagram illustrating the relative spatial positional relationship between second reference signals provided for embodiments of this application;

[0090] Figure 17 A schematic diagram illustrating the relative spatial positional relationship between second reference signals provided for embodiments of this application;

[0091] Figure 18 A flowchart illustrating another channel measurement method provided in an embodiment of this application;

[0092] Figure 19 A schematic diagram of the structure of a possible communication device provided in the embodiments of this application;

[0093] Figure 20 A schematic diagram of the structure of a possible communication device provided in an embodiment of this application. Detailed Implementation

[0094] To better understand the embodiments of this application, the system architecture involved in the embodiments of this application will be described first below:

[0095] This application's embodiments can be applied to long-term evolution (LTE) systems, 5th generation mobile communication (5G) systems, 6th generation mobile communication (6G) systems, and other communication systems evolving after 5G, as well as satellite communication and short-range wireless communication systems. The wireless communication systems mentioned in this application's embodiments include, but are not limited to: the three major application scenarios of 5G / 6G mobile communication systems: enhanced mobile broadband (eMBB), ultra-reliable low latency communication (URLLC), and massive machine-type communication (mMTC), long-range (LoRa) systems, or vehicle-to-everything (V2X) systems. The wireless communication system may include one or more access network devices and one or more terminal devices.

[0096] Figure 1 This is a possible, non-limiting system diagram provided for an embodiment of this application. For example... Figure 1 As shown, the communication system 10 includes a radio access network (RAN) 100, a core network (CN) 200, and a data network (DN) 300.

[0097] 1. RAN 100 includes at least one RAN node (e.g., Figure 1 110a and 110b (collectively referred to as 110) and at least one terminal (such as Figure 1 RAN 100, denoted as RAN 120a-120j, is collectively referred to as RAN 120. RAN 100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment. Figure 1 (Not shown in the image). Terminal 120 is connected to RAN node 110 wirelessly. RAN node 110 is connected to core network 200 wirelessly or via wired connection. The core network equipment in core network 200 and RAN node 110 in RAN 100 can be different physical devices, or they can be the same physical device integrating core network logical functions and radio access network logical functions.

[0098] RAN 100 can be a cellular system related to the 3rd Generation Partnership Project (3GPP), such as 4G, 5G mobile communication systems, or future-oriented evolution systems (such as 6G mobile communication systems). RAN 100 can also be an open RAN (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. RAN 100 can also be a communication system that integrates two or more of the above systems. RAN can also be referred to as an access network (AN).

[0099] 1. RAN Node 110

[0100] RAN node 110, sometimes also referred to as access network equipment, RAN entity, access node, access point, or network device, constitutes part of the communication system and is used to help terminals achieve wireless access. Multiple RAN nodes 110 in communication system 10 can be of the same type or different types. In some scenarios, the roles of RAN node 110 and terminal 120 are relative, for example... Figure 1 Network element 120i can be a helicopter or a drone, and it can be configured as a mobile base station. For terminals 120j that access RAN 100 through network element 120i, network element 120i is a base station; however, for base station 110a, network element 120i is a terminal. RAN node 110 and terminal 120 are sometimes referred to as communication devices, for example... Figure 1 Network elements 110a and 110b can be understood as communication devices with base station functions, while network elements 120a-120j can be understood as communication devices with terminal functions.

[0101] In one possible scenario, RAN node 110 can be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next-generation NodeB (gNB), a next-generation base station in a 6th-generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc. Figure 1 110a), micro base stations or indoor stations (such as Figure 1The RAN node 110 can be a relay node or donor node, or a wireless controller in a CRAN scenario. In one possible embodiment, the RAN node 110 can also be a server, wearable device, vehicle, or in-vehicle equipment. For example, the access network device in vehicle-to-everything (V2X) technology can be a roadside unit (RSU). All or part of the functions of the RAN node 110 in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (e.g., a cloud platform). The RAN node 110 in this application can also be a logical node, logical module, or software capable of implementing all or part of the functions of the RAN node 110.

[0102] In another possible scenario, multiple RAN nodes 110 collaborate to assist the terminal in achieving wireless access, with each RAN node 110 implementing a portion of the base station's functions. For example, a RAN node 110 can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. CUs and DUs can be configured separately or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio frequency equipment or radio frequency units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs).

[0103] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called O-CU (open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules.

[0104] In this embodiment, the form of RAN node 110 is not limited. The device used to implement the function of RAN node 110 can be RAN node 110 itself; or it can be a device that supports RAN node 110 in implementing the function, such as a chip system. The device can be installed in RAN node 110 or used in conjunction with RAN node 110.

[0105] For ease of description, RAN node 110 will be referred to as a network device in the following text.

[0106] 2. Terminal

[0107] The terminal can be a device or module that accesses the aforementioned communication system and has corresponding communication functions. The terminal can also be called a terminal device, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. The terminal can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, wearable device, vehicle, drone, helicopter, airplane, ship, robot, robotic arm, smart home device, transportation vehicle with wireless communication capabilities, communication module, head-mounted XR glasses, video player, holographic projector, etc. The embodiments of this application do not limit the device form of the terminal. The terminal typically contains a communication module, circuit, or chip that performs the corresponding communication functions. The terminal can also be configured with program instructions for performing the corresponding communication functions.

[0108] II. Core Network 200

[0109] The core network 200 has three main functions: registration, connection, and session management. The core network 200 primarily includes network exposure function (NEF) network elements, policy control function (PCF) network elements, application function (AF) network elements, access and mobility management function (AMF) network elements, session management function (SMF) network elements, and user plane function (UPF) network elements.

[0110] NEF network element: Used to expose the services and capabilities of 3GPP network functions to AF network elements, and at the same time, it allows AF network elements to provide information to 3GPP network functions.

[0111] PCF network element: Used for policy management of charging and QoS policies.

[0112] AF element: mainly used to transmit the application side's requirements to the network side.

[0113] AMF (Automatic Mobility Management) elements are primarily used for mobility management, access authentication / authorization, and other functions. They are also responsible for transmitting user policies between the UE and the PCF (Programmable Component Filter).

[0114] SMF network element: Used to complete session management functions such as UE IP address allocation, UPF selection, billing and QoS policy control.

[0115] UPF network elements: As the interface with the data network, they perform functions such as user plane data forwarding, session / flow-based billing and statistics, and bandwidth limiting.

[0116] III. Data Network 300

[0117] Data network 300 can provide services such as fixed-line network, Internet, carrier services or third-party services.

[0118] The following explanations of some terms involved in the embodiments of this application are provided to facilitate understanding by those skilled in the art. This explanation is for the purpose of understanding only and should not be regarded as a disclosure or specific limitation of the technical solution of this application.

[0119] I. Antenna Port

[0120] An antenna port is a logical concept; there is no direct correspondence between an antenna port and a physical antenna. An antenna port is typically associated with a reference signal, and its meaning can be understood as a transmit / receive interface on the channel through which the reference signal passes. For low frequencies, an antenna port may correspond to one or more antenna elements that jointly transmit the reference signal; the receiver can treat them as a whole without distinguishing between individual elements. For high-frequency systems, an antenna port may correspond to a beam; similarly, the receiver only needs to treat this beam as an interface and does not need to distinguish between individual elements.

[0121] II. Beam

[0122] A beam is a communication resource. A beam can be wide, narrow, or other types. The technology used to form a beam can be beamforming or other techniques. Beamforming technology can specifically be digital beamforming, analog beamforming, or hybrid digital / analog beamforming. Different beams can be considered different resources. The same or different information can be transmitted through different beams. Optionally, multiple beams with the same or similar communication characteristics can be considered as a single beam. A beam can include one or more antenna ports for transmitting data channels, control channels, and detection signals, etc. For example, a transmit beam can refer to the signal strength distribution in different directions of space after a signal is transmitted through an antenna, and a receive beam can refer to the signal strength distribution in different directions of space of the wireless signal received from the antenna. It is understandable that one or more antenna ports forming a beam can also be considered as a set of antenna ports. In protocols, beams can also be represented by spatial filters.

[0123] III. Reference Signal

[0124] According to the LTE / NR protocol, at the physical layer, uplink communication includes the transmission of uplink physical channels and uplink signals. Uplink physical channels include the random access channel (PRACH), physical uplink control channel (PUCCH), and physical uplink shared channel (PUSCH). Uplink signals include the sounding reference signal (SRS), the PUCCH de-modulation reference signal (PUCCH-DMRS), the PUSCH-DMRS, the phase noise tracking reference signal (PTRS), and the uplink positioning signal (PSS), etc. Downlink communication includes the transmission of downlink physical channels and downlink signals. Downlink physical channels include the physical broadcast channel (PBCH), physical downlink control channel (PDCCH), and physical downlink shared channel (PDSCH), etc. Downlink signals include the primary synchronization signal (PSS) / secondary synchronization signal (SSS), synchronization signal block (SSB), downlink control channel demodulation reference signal (PDCCH-DMRS), downlink data channel demodulation reference signal (PDSCH-DMRS), downlink PTRS, channel status information reference signal (CSI-RS), cell reference signal (CRS) (not present in NR), time / frequency tracking reference signal (TRS) (not present in LTE), and LTE / NR positioning signal (positioning RS), etc.

[0125] IV. Beamforming

[0126] In higher frequency communication systems, base stations (and some terminals in certain frequency bands) typically use massive MIMO antennas (e.g., 500 to 1000+ antenna elements) to compensate for path loss caused by the increased frequency and improve coverage through higher array gain. From the perspective of base station implementation, beamforming can be broadly categorized into three types:

[0127] Digital beamforming (DBF): For example, its basic structure is as follows Figure 2 As shown, each or a group of antenna elements is directly connected to a digital channel. Since each antenna signal is directly converted to the digital domain, subsequent array weighting is performed in the digital domain, hence the term digital beamforming (DBF). Digital domain signal processing offers the highest degree of freedom, supporting very complex signal processing methods; therefore, for the same array size, the DBF architecture offers the best performance. On the other hand, due to the high power consumption and cost of digital-to-analog / analog-to-digital converters (ADCs / DACs) (especially under high bandwidth conditions), the cost of DBF is also the highest for the same array size.

[0128] Analog beamforming (ABF): For example, its structure is as follows Figure 3 As shown, each or a group of antenna elements is connected to an analog phase shifter. Multiple antenna elements are then combined in the analog domain and passed through a digital-to-analog (DAC) to analog-to-digital (ADC) converter. Compared to DBF, the entire ABF array corresponds to only one DAC, so the biggest advantage of the ABF architecture is its low cost and power consumption. The bottleneck of ABF is also obvious: the analog phase shifter settings determine the beam direction after beamforming. Because the signals are directly combined in the analog domain, they cannot be weighted using digital signal processing like in DBF. ABF requires pre-configuring the phase shifter settings (pointing the analog beam to the target terminal) during transmission and reception. This process needs to be completed through beam scanning during the link establishment phase, introducing additional latency.

[0129] Hybrid beamforming (HBF): For example, its structure is as follows Figure 4 The image shows an intermediate form between ABF and DBF. Figure 4The example illustrates a 3-digital-channel HBF architecture, with each digital channel corresponding to 2 analog phase shifters. The HBF has a certain number of digital channels supporting digital beamforming, and each digital channel drives an ABF subarray. Compared to ABF, for the same array size, each digital channel drives a smaller analog subarray, resulting in a wider beam, better reliability, and lower beam scanning overhead. The ratio of digital channels to analog phase shifters in the HBF varies depending on the frequency and system design requirements. For example, high-frequency systems have a small number of digital channels (4–16) and a larger number of analog phase shifters per digital channel (16–32), closer to an ABF architecture. Conversely, low-frequency systems have a larger number of digital channels (32–128) and fewer analog phase shifters per digital channel (e.g., 2–10).

[0130] Both HBF and ABF architectures use analog beams, and signal quality is only better when the beams are aligned with the communication target. The direction of the analog beams (determined by beam weights) needs to be configured before transmission and reception. For a given terminal, the process of the base station selecting an analog beam is called beam training or beam scanning. Beam scanning typically involves the base station transmitting reference signals using different analog beam weights, and the terminal measuring these reference signals and feeding back the measurement results to help the base station determine which beam has the best quality.

[0131] V. Channel State Information (CSI) Measurement

[0132] To transmit data to the terminal, the base station needs to perform precoding on the digital port and select appropriate coding and modulation orders. The purpose of precoding is to better match the antenna (or beam) to the channel, ensuring better signal quality and less interference when the transmitted data reaches the terminal. Good coding and modulation orders maximize the channel's transmission capacity while ensuring reliable data transmission. The settings for precoding and MCS (Multi-Channel System) need to be determined based on channel state information. One common method for determining channel state information is for the base station to transmit a reference signal, which the terminal measures to determine the downlink channel state information, and then the terminal feeds this downlink channel state information back to the base station. Another method is for the terminal to transmit an uplink reference signal, the base station to measure and obtain the uplink channel state information, and then, based on channel reciprocity, further obtain the downlink channel state information.

[0133] As mentioned earlier, the HBF architecture incorporates both digital channels and analog phase shifter arrays. Therefore, during communication, the HBF architecture offers multiple analog beams to choose from. Under each analog beam, the weighting values ​​and MCS of the digital channel used to serve a particular terminal require downlink channel state information. This means that the base station needs to instruct the terminal to measure the downlink channel state information under each analog beam separately and then provide feedback, which increases pilot overhead and feedback overhead.

[0134] VI. Existing Downlink Channel State Information Measurement and Reporting Process

[0135] For example, the existing downlink channel state information measurement and reporting process, such as Figure 5 As shown, it includes the following steps:

[0136] 501. Network devices send resource configuration information and channel status information for reference signals to terminals.

[0137] Resource configuration information refers to information related to measurement resources. In existing protocols, this is configured through a three-level structure (resourceConfig - resourceSet - resource), for example... Figure 6 As shown, a network device can configure one or more resource configurations for a terminal. Each resource configuration includes one or more resource sets, and each resource set can include one or more resources. Each resource configuration / resource set / resource includes its own index. In addition, other parameters are included, such as the resource's period and the signal type corresponding to the resource.

[0138] Reporting configuration information refers to information related to the reporting of measurement results, which is configured in the protocol using the ReportConfig configuration. Network devices can configure one or more ReportConfig configurations for terminals. Each ReportConfig configuration includes information related to reporting, such as the reporting metrics, reporting time and period, and reporting format. In addition, the reporting configuration also includes an index of resource configurations, indicating which measurement configuration was used to obtain the reported results.

[0139] 502. Network devices send downlink reference signals on the resources configured in the resource configuration information.

[0140] 503. The terminal measures the downlink reference signal based on the resource configuration information.

[0141] The terminal measures the downlink reference signals based on resource configuration information to determine the quality of each resource (i.e., the quality of the beam corresponding to the resource). The downlink reference signals mainly include SSB, CSI-RS, and TRS. The PBCH carries the master information block (MIB), used to configure the cell's main system information.

[0142] Base stations with large antenna arrays often require measurements using multiple beams to achieve coverage for all users in the cell. For SSB signals, which primarily carry broadcast information, the measured beams are typically wide and few in number to cover a wider range of users. CSI-RS, on the other hand, is mainly used to measure channel state information from different antenna ports to the terminal for precoding during downlink transmission at the base station. The more antenna elements measured and used for precoding, the greater the array gain. Therefore, CSI-RS often needs to measure the channel information of most or even all antenna elements, resulting in very narrow and numerous beams.

[0143] 504. The terminal sends a beam measurement report to the network device, which includes channel state information (CSI).

[0144] For example, channel state information may include one or more of the following: indexes of one or more resources, channel quality indicator (CQI), reference signal received power (RSRP), precoding matrix indicator (PMI), rank indicator (RI), layer indicator (LI), CSI-RS index (CRI) field, synchronization signal block resource index (SSBRI), etc.

[0145] VII. Artificial Intelligence (AI) Node

[0146] To support AI technologies in wireless networks, such as training or inferring models (i.e. using AI models), AI nodes may also be introduced into the communication system.

[0147] Optionally, the AI ​​node can be deployed in one or more of the following locations within the communication system: access network equipment, terminal, or core network equipment, etc. Alternatively, the AI ​​node can be deployed independently, for example, in a location other than any of the aforementioned devices, such as in the host or cloud server of an over-the-top (OTT) system. The AI ​​node can communicate with other devices in the communication system, which can be, for example, one or more of the following: access network equipment, terminal, or core network elements, etc.

[0148] It is understood that this application does not limit the number of AI nodes. For example, when there are multiple AI nodes, these nodes can be divided based on function, such as different AI nodes being responsible for different functions.

[0149] It can also be understood that AI nodes can be independent devices, integrated into the same device to implement different functions, or they can be network elements in hardware devices, software functions running on dedicated hardware, or virtualization functions instantiated on a platform (e.g., a cloud platform). This application does not limit the specific form of the AI ​​nodes described above. Among them, AI nodes can be AI network elements or AI modules.

[0150] Figure 7 This is a schematic diagram of a possible application framework in a communication system. For example... Figure 7 As shown, network elements in a communication system are connected via interfaces (e.g., NG, Xn) or air interfaces. These network element nodes, such as core network equipment, access network nodes (RAN nodes), terminals, or one or more devices in the OAM, are equipped with one or more AI modules (for clarity, ...). Figure 7 (Only one is shown in the image). An access network node can be a standalone RAN device or can comprise multiple devices, such as a CU and a DU. The CU and / or DU can also be configured with one or more AI modules. Optionally, the CU can be further divided into CU-CP and CU-UP. One or more AI models are configured in the CU-CP and / or CU-UP.

[0151] AI modules are used to implement corresponding AI functions. AI modules deployed in different network elements can be the same or different. Depending on the parameter configuration, the AI ​​module can implement different functions. The AI ​​module model can be configured based on one or more of the following parameters: structural parameters (e.g., at least one of the following: number of neural network layers, neural network width, inter-layer connections, neuron weights, neuron activation function, or biases in the activation function), input parameters (e.g., the type and / or dimension of the input parameters), or output parameters (e.g., the type and / or dimension of the output parameters). The biases in the activation function can also be referred to as the neural network biases.

[0152] An AI module can have one or more models. A model can infer an output, which includes one or more parameters. The learning, training, or inference processes of different models can be deployed on different nodes or devices, or they can be deployed on the same node or device.

[0153] 8. Neural Networks and AI Models

[0154] Neural networks: one of the ways to implement artificial intelligence; the AI ​​model involved in the embodiments of this application can also refer to neural networks. A neural network is a mathematical model that uses the behavioral characteristics of animal neural networks as a model for information and data processing. For example... Figure 8 As shown, a neural network consists of three interconnected computational layers: an input layer, a hidden layer, and an output layer. Each of these layers comprises one or more neurons, which are the basic units of the neural network. Each neuron consists of trainable parameters (weights w and biases b) and a nonlinear activation function f. For example, if a neuron has weights w and a bias b, then the relationship between the input parameter x and the output parameter y is as follows: y = f(w*x + b). Multiple neurons interconnected form a neural network (also called a neural network model). A neural network can "learn" by continuously updating the trainable parameters and performing a nonlinear function calculation on the weighted sum of the inputs to fit the final output. Neural networks can include feedforward neural networks (FNNs), convolutional neural networks (CNNs), and recurrent neural networks (RNNs), etc., which will not be listed here. Neural networks can also be deep neural networks (DNNs), i.e., neural networks with multiple hidden layers.

[0155] AI models can be implemented using one or more of the following methods, or represent the mapping relationship between input and output parameters: neural networks, deep learning, reinforcement learning, machine learning, federated learning, distributed learning, etc. For example, an AI model can be a network learned using a DNN, i.e., a network obtained through deep learning. AI models can also be called AI networks, neural network models, or machine learning models.

[0156] With the evolution of MIMO technology, the antenna scale on the base station side has further increased, requiring terminals to measure more reference signals to complete downlink channel measurements for large-scale arrays. For some terminals, due to capability limitations, they can only complete downlink channel measurements for a very small number of antenna ports in a single operation. The base station can use uplink channel state information (OSI) measurements to indicate which antenna ports have higher energy levels, allowing the terminal to complete measurements of some important antenna ports. Then, algorithms can be used to accurately recover the OSI for all antenna ports. However, measuring uplink OSI under high bandwidth also requires multiple measurements over a long period, leading to severe aging of the OSI data. Furthermore, the low signal-to-noise ratio of the received uplink OSI data results in low accuracy, leading to significant errors in antenna port selection. This ultimately results in low downlink channel measurement accuracy.

[0157] To improve the accuracy of downlink channel measurement, embodiments of this application provide a channel measurement method and a communication device. The channel measurement method and communication device will be further described below with reference to the accompanying drawings. It is understood that this application uses a terminal and a network device as examples to illustrate the execution of the interaction, but this application does not limit the execution subject of the interaction. For example, the method executed by the terminal in this application can also be implemented by a communication / processing module in the terminal or a circuit or chip (such as a modem chip (also known as a baseband chip), or a SoC chip containing a modem core, or a SIP chip, or a GPU) responsible for communication / processing functions in the terminal. The method executed by the network device in this application can also be implemented by a module (e.g., a circuit, chip, or chip system) in the network device, or a logical node, logical module, or software capable of implementing all or part of the functions of the network device.

[0158] Please see Figure 9 , Figure 9 This is a flowchart illustrating a channel measurement method provided in an embodiment of this application, wherein:

[0159] 901. The network device sends configuration information to the terminal. This configuration information is used to configure the relative spatial relationships between multiple first reference signals, multiple second reference signals, and the relative spatial relationships between the first and second reference signals; the coverage area corresponding to the first reference signal is greater than the coverage area corresponding to the second reference signal. Accordingly, the terminal can receive this configuration information.

[0160] In this embodiment of the application, the fact that the coverage area corresponding to the first reference signal is greater than the coverage area corresponding to the second reference signal can be understood as follows: the beam corresponding to the first reference signal is a wide beam, and the beam corresponding to the second reference signal is a narrow beam. Alternatively, the beam range corresponding to the first reference signal is greater than the beam range corresponding to the second reference signal. Alternatively, the signal coverage area corresponding to the first reference signal is greater than the signal coverage area corresponding to the second reference signal. Alternatively, the spatial range corresponding to the first reference signal is greater than the spatial range corresponding to the second reference signal.

[0161] In one possible embodiment, the first reference signal is SSB and the second reference signal is CSI-RS.

[0162] The beam corresponding to the SSB is relatively wide, encompassing a larger range of spatial angle information. In contrast, the beam corresponding to the CSI-RS is relatively narrow. The beam range of one SSB may contain the spatial angle information of multiple CSI-RS beams. Therefore, the terminal can use the channel state information of the SSB to infer the strength relationship of multiple CSI-RS within the spatial range corresponding to that SSB, and then select the stronger CSI-RS for measurement.

[0163] In another possible embodiment, the first reference signal is CSI-RS and the second reference signal is CSI-RS.

[0164] An additional wide-beam CSI-RS can be configured on network equipment for terminal measurement. While the resolution of the wide-beam CSI-RS measurement is lower and it is not directly used for acquiring downlink channel state information, the spatial range of the wide-beam CSI-RS may contain spatial angle information from multiple narrow-beam CSI-RS. Therefore, the terminal can use the channel state information from the wide-beam CSI-RS to infer the strength relationship among multiple narrow-beam CSI-RS within the corresponding spatial range, and then select the stronger narrow-beam CSI-RS for measurement.

[0165] Alternatively, the first reference signal and the second reference signal can also be other downlink reference signals that satisfy the condition that the coverage area corresponding to the first reference signal is greater than the coverage area corresponding to the second reference signal. This application does not limit the specific reference signal.

[0166] 1. The following describes possible implementation methods for configuring the relative spatial positional relationship between multiple first reference signals:

[0167] In one possible embodiment, the configuration information includes a first parameter, a second parameter, and logical numbers of a plurality of first reference signals; the first parameter indicates the number of first reference signals in the horizontal direction among the plurality of first reference signals, and the second parameter indicates the number of first reference signals in the vertical direction among the plurality of first reference signals. Based on this possible embodiment, the relative spatial positional relationship between the plurality of first reference signals can be accurately configured.

[0168] For example, taking SSB as the first reference signal. Figure 10 As shown, there are a total of 4 SSBs. The network device is configured with 1 horizontal SSB and 4 vertical SSBs. The logical numbers of the 4 SSBs are SSB#0, SSB#1, SSB#2, and SSB#3, respectively.

[0169] For example, consider a CSI-RS system where the first reference signal is a wide-beam receiver. Figure 11 As shown, there are a total of 8 wide-beam CSI-RS. The network device is configured with 2 wide-beam CSI-RS in the horizontal direction and 4 wide-beam CSI-RS in the vertical direction. The logical sequence numbers of the 8 wide-beam CSI-RS are wide-beam CSI-RS#0, wide-beam CSI-RS#1, ..., wide-beam CSI-RS#7.

[0170] In one possible embodiment, the logical sequence numbers of the first parameter, the second parameter, and the plurality of first reference signals are located in the resource set information of the first reference signals. Based on this possible embodiment, configuring the logical sequence numbers of the first parameter, the second parameter, and the plurality of first reference signals in the resource set information, rather than configuring the logical sequence numbers of the first parameter, the second parameter, and the plurality of first reference signals in each resource information, is beneficial for saving transmission overhead.

[0171] In one possible embodiment, the configuration information may further include parameter information indicating the number of first reference signals with polarization directions among a plurality of first reference signals. Optionally, this parameter information may also be located in the resource set information of the first reference signals.

[0172] 2. The following describes possible implementation methods for configuring the relative spatial positional relationships between multiple second reference signals:

[0173] 1) The configuration information includes a third parameter, a fourth parameter, and a logical sequence number of the second reference signal corresponding to each first reference signal; the third parameter indicates the number of second reference signals in the horizontal direction within the coverage area of ​​the corresponding first reference signal, and the fourth parameter indicates the number of second reference signals in the vertical direction within the coverage area of ​​the corresponding first reference signal. Based on this possible embodiment, the relative spatial positional relationship between multiple second reference signals can be accurately configured.

[0174] In other words, for multiple second reference signals within the coverage area of ​​the same first reference signal, the network device configures the number of second reference signals in the horizontal direction, the number of second reference signals in the vertical direction, and the logical sequence number of the second reference signals within the coverage area of ​​each first reference signal.

[0175] For example, taking SSB as the first reference signal and CSI-RS as the second reference signal. Figure 12 As shown, there are a total of 4 SSBs. The network device is configured with 1 horizontal SSB and 4 vertical SSBs. The logical numbers of the 4 SSBs are SSB#0, SSB#1, SSB#2, and SSB#3, respectively.

[0176] Taking SSB#0 as an example, the network device is configured to have 4 horizontal CSI-RS within the coverage area of ​​SSB#0, and 2 vertical CSI-RS within the coverage area of ​​SSB#0. The logical sequence numbers of the CSI-RS within the coverage area of ​​SSB#0 are CSI-RS#0, CSI-RS#1, ..., CSI-RS#7. The configuration of the network device for SSB#1, SSB#2, and SSB#3 is similar and will not be elaborated here.

[0177] For example, consider a case where the first reference signal is a wide-beam CSI-RS and the second reference signal is a narrow-beam CSI-RS. Figure 13 As shown, there are a total of 8 wide-beam CSI-RS. The network device is configured with 2 wide-beam CSI-RS in the horizontal direction and 4 wide-beam CSI-RS in the vertical direction. The logical sequence numbers of the 8 wide-beam CSI-RS are wide-beam CSI-RS#0, wide-beam CSI-RS#1, ..., wide-beam CSI-RS#7.

[0178] Taking wide-beam CSI-RS#0 as an example, the network device is configured to have 2 narrow-beam CSI-RS in the horizontal direction and 2 narrow-beam CSI-RS in the vertical direction within the coverage area of ​​wide-beam CSI-RS#0. The logical sequence numbers of the narrow-beam CSI-RS within the coverage area of ​​wide-beam CSI-RS#0 are narrow-beam CSI-RS#0, narrow-beam CSI-RS#1, ..., narrow-beam CSI-RS#3. The configuration of the network device for wide-beam CSI-RS#1, ..., wide-beam CSI-RS#7 is similar and will not be elaborated here.

[0179] In one possible embodiment, the logical sequence numbers of the third parameter, fourth parameter, and second reference signal corresponding to each first reference signal are located in the resource set information of the first reference signal, or in the resource information of the first reference signal. For example, when the logical sequence numbers of the third parameter, fourth parameter, or second reference signal corresponding to each first reference signal are the same, the logical sequence numbers of the third parameter, fourth parameter, and second reference signal corresponding to each first reference signal can be configured in the resource set information, which helps to save transmission overhead. When the logical sequence numbers of the third parameter, fourth parameter, or second reference signal corresponding to different first reference signals are different, the logical sequence numbers of the third parameter, fourth parameter, and second reference signal corresponding to the first reference signal can be configured in the resource information.

[0180] In one possible embodiment, the configuration information further includes parameter information corresponding to each first reference signal, which indicates the number of second reference signals with polarization directions within the coverage area of ​​the corresponding first reference signal. Optionally, this parameter information may also be located in the resource set information or resource information of the first reference signal.

[0181] 2) The configuration information includes a fifth parameter, a sixth parameter, and a set of logical numbers for all second reference signals. The fifth parameter indicates the number of second reference signals in the horizontal direction, and the sixth parameter indicates the number of second reference signals in the vertical direction. Based on this possible embodiment, the relative spatial relationships between multiple second reference signals can be accurately configured.

[0182] In other words, the network device configures a set of logical numbers for all the second reference signals and indicates the number of horizontal second reference signals and the number of vertical second reference signals among all the second reference signals.

[0183] For example, taking SSB as the first reference signal and CSI-RS as the second reference signal. Figure 14 As shown, there are a total of 4 SSBs. The network device is configured with 1 horizontal SSB and 4 vertical SSBs. The logical numbers of the 4 SSBs are SSB#0, SSB#1, SSB#2, and SSB#3, respectively. The network device is configured with 4 horizontal CSI-RSs and 8 vertical CSI-RSs. The logical numbers of the CSI-RSs are CSI-RS#0, CSI-RS#1, ..., CSI-RS#31, respectively.

[0184] For example, consider a case where the first reference signal is a wide-beam CSI-RS and the second reference signal is a narrow-beam CSI-RS. Figure 15 As shown, there are a total of 8 wide-beam CSI-RS. The network device is configured with 2 wide-beam CSI-RS in the horizontal direction and 4 wide-beam CSI-RS in the vertical direction. The logical numbers of the 8 wide-beam CSI-RS are wide-beam CSI-RS#0, wide-beam CSI-RS#1, ..., wide-beam CSI-RS#7. The network device is configured with 4 narrow-beam CSI-RS in the horizontal direction and 8 narrow-beam CSI-RS in the vertical direction. The logical numbers of the narrow-beam CSI-RS are narrow-beam CSI-RS#0, narrow-beam CSI-RS#1, ..., narrow-beam CSI-RS#31.

[0185] In one possible embodiment, the fifth parameter, the sixth parameter, and the logical sequence numbers of all second reference signals are located in the resource configuration corresponding to the second reference signal, or in the resource set information of the second reference signal. Based on this possible embodiment, configuring the fifth parameter, the sixth parameter, and the logical sequence numbers of all second reference signals in the resource configuration or resource set information, rather than configuring them in each piece of resource information, helps to save transmission overhead.

[0186] In one possible embodiment, the configuration information further includes parameter information indicating the number of second reference signals with polarization directions among all second reference signals. Optionally, this parameter information may also be located in the resource configuration or resource set information of the second reference signals.

[0187] 3) The configuration information includes the seventh parameter, the eighth parameter, and the logical sequence number of the second reference signal for each resource set corresponding to the second reference signal; the seventh parameter indicates the number of second reference signals in the horizontal direction in the corresponding resource set, and the eighth parameter indicates the number of second reference signals in the vertical direction in the corresponding resource set;

[0188] The configuration information also includes a ninth parameter, a tenth parameter, and a set of logical sequence numbers for all resource sets of the second reference signal. The ninth parameter indicates the number of resource sets in the horizontal direction among all resource sets of the second reference signal, and the tenth parameter indicates the number of resource sets in the vertical direction among all resource sets of the second reference signal. Based on this possible embodiment, the relative spatial positional relationship between multiple second reference signals can be accurately configured.

[0189] In other words, a network device can configure a set of logical sequence numbers for a resource set of the second reference signal, as well as indicate the number of second reference signals in the horizontal direction and the number of second reference signals in the vertical direction within that resource set. In addition, the network device can configure a set of logical sequence numbers for all resource sets of the second reference signal, and configure the number of resource sets in the horizontal direction and the number of resource sets in the vertical direction within all resource sets of the second reference signal.

[0190] For example, taking SSB as the first reference signal and CSI-RS as the second reference signal. Figure 16 As shown, there are a total of 4 SSBs. The network device is configured with 1 horizontal SSB and 4 vertical SSBs. The logical numbers of the 4 SSBs are SSB#0, SSB#1, SSB#2, and SSB#3, respectively.

[0191] The network device is configured with 2 horizontal CSI-RS resource sets and 4 vertical CSI-RS resource sets. The logical sequence numbers of the CSI-RS resource sets are CRI#0, CRI#1, ..., CRI#7. For CRI#0, the network device is configured with 2 horizontal CSI-RS sets and 2 vertical CSI-RS sets. The logical sequence numbers of the CSI-RS sets in CRI#0 are CSI-RS#0, CSI-RS#1, ..., CSI-RS#3. The configuration for CRI#1, ..., CRI#7 is similar and will not be elaborated here.

[0192] For example, consider a case where the first reference signal is a wide-beam CSI-RS and the second reference signal is a narrow-beam CSI-RS. Figure 17 As shown, there are a total of 8 wide-beam CSI-RS. The network device is configured with 2 wide-beam CSI-RS in the horizontal direction and 4 wide-beam CSI-RS in the vertical direction. The logical sequence numbers of the 8 wide-beam CSI-RS are wide-beam CSI-RS#0, wide-beam CSI-RS#1, ..., wide-beam CSI-RS#7.

[0193] The network device is configured with 2 horizontal narrow-beam CSI-RS resource sets and 4 vertical narrow-beam CSI-RS resource sets. The logical sequence numbers of the narrow-beam CSI-RS resource sets are CRI#0, CRI#1, ..., CRI#7. For CRI#0, the network device is configured with 2 horizontal narrow-beam CSI-RS and 2 vertical narrow-beam CSI-RS within CRI#0. The logical sequence numbers of the narrow-beam CSI-RS within CRI#0 are CSI-RS#0, CSI-RS#1, ..., CSI-RS#3. The configuration for CRI#1, ..., CRI#7 is similar and will not be elaborated here.

[0194] The correspondence between the resource set of the second reference signal and the first reference signal may exist in several ways, as follows:

[0195] In one approach, a resource set of a second reference signal corresponds to a second reference signal within the range of a first reference signal.

[0196] In one approach, a resource set of a second reference signal corresponds to a second reference signal within the range of multiple first reference signals.

[0197] In one approach, a resource set of multiple second reference signals corresponds to a second reference signal within the range of a first reference signal.

[0198] In one possible embodiment, the seventh parameter, the eighth parameter, and the logical sequence number of the second reference signal corresponding to each resource set of the second reference signal are located in the resource configuration or resource set information of the second reference signal. For example, when the seventh parameter, the eighth parameter, and the logical sequence number of the second reference signal corresponding to each resource set of the second reference signal are the same, the seventh parameter, the eighth parameter, and the logical sequence number of the second reference signal corresponding to each resource set of the second reference signal can be configured in the resource configuration, which helps to save transmission overhead. When the seventh parameter, the eighth parameter, and the logical sequence number of the second reference signal corresponding to different resource sets of the second reference signal are different, the seventh parameter, the eighth parameter, and the logical sequence number of the second reference signal corresponding to the resource set of the second reference signal can be configured in the resource set information.

[0199] In one possible embodiment, the logical sequence numbers of all resource sets of the ninth parameter, the tenth parameter, and the second reference signal are located in the resource configuration corresponding to the second reference signal. Based on this possible embodiment, configuring the logical sequence numbers of all resource sets of the ninth parameter, the tenth parameter, and the second reference signal in the resource configuration, rather than configuring them in each resource set information or resource information, helps to save transmission overhead.

[0200] In one possible embodiment, the configuration information further includes parameter information indicating the number of second reference signals with a resource-based polarization direction. Optionally, this parameter information may also be located in the resource configuration or resource set information of the second reference signal.

[0201] 3. The following describes possible implementation methods for configuring the relative spatial relationship between the first reference signal and the second reference signal:

[0202] 1) The configuration information includes an eleventh parameter corresponding to each resource set of the second reference signal. The eleventh parameter indicates the logical sequence number of the first reference signal corresponding to the resource set of the second reference signal, and / or the relative spatial strength between the resource set of the second reference signal and the corresponding first reference signal. Based on this possible embodiment, the relative spatial relationship between the first reference signal and the second reference signal can be accurately configured.

[0203] Wherein, the first reference signal corresponding to the resource set of the second reference signal refers to the first reference signal whose coverage includes the coverage area of ​​the resource set of the second reference signal.

[0204] Different second reference signals within the same resource set have the same eleventh parameter. For example, ... Figure 16 As shown, the eleventh parameter corresponding to CRI#0 indicates that CRI#0 corresponds to SSB#0, and / or indicates the relative spatial strength between CRI#0 and SSB#0. CSI-RS#0, CSI-RS#1, ..., CSI-RS#3 in CRI#0 all correspond to SSB#0, meaning the coverage areas of CSI-RS#0, CSI-RS#1, ..., CSI-RS#3 are within the coverage area of ​​SSB#0. Furthermore, the relative spatial strength between different CSI-RS and SSB#0 in CSI-RS#0, CSI-RS#1, ..., CSI-RS#3 is the same.

[0205] If the eleventh parameter further indicates the relative spatial strength between the resource set of the second reference signal and the first reference signal, then the relative spatial positions between different resource sets of the second reference signal and the first reference signal within the coverage area of ​​the same first reference signal may differ, thus further distinguishing the relative spatial relationship between different resource sets of the second reference signal and the first reference signal within the coverage area of ​​the same first reference signal. For example, the eleventh parameter may include a relational parameter, which can be equal to 0, 1, 2, etc., to indicate that the resource set of the second reference signal is located in the main lobe, side lobe, or secondary strong side lobe of the first parameter signal, etc.

[0206] Optionally, if the configuration information includes the third parameter, the fourth parameter, and the logical sequence number of the second reference signal corresponding to each first reference signal, the eleventh parameter may indicate the relative spatial strength between the resource set of the second reference signal and the corresponding first reference signal, and may not indicate the logical sequence number of the first reference signal corresponding to the resource set of the second reference signal.

[0207] Optionally, if the configuration information includes the fifth parameter, the sixth parameter, and a set of logical numbers for all second reference signals, or if the configuration information includes the seventh parameter, the eighth parameter, and the logical number of the second reference signal corresponding to each resource set of the second reference signal, the eleventh parameter is used to indicate the logical number of the first reference signal corresponding to the resource set of the second reference signal. Optionally, the eleventh parameter further indicates the relative spatial strength between the resource set of the second reference signal and the corresponding first reference signal.

[0208] 2) The configuration information includes an eleventh parameter corresponding to each second reference signal. The eleventh parameter indicates the logical sequence number of the first reference signal corresponding to the second reference signal, and / or the relative spatial strength between the second reference signal and the corresponding first reference signal. Based on this possible embodiment, the relative spatial relationship between the first reference signal and the second reference signal can be accurately configured.

[0209] The first reference signal corresponding to the second reference signal refers to the first reference signal whose coverage area includes the coverage area of ​​the second reference signal.

[0210] The eleventh parameter can be different for different second reference signals. For example, ... Figure 14As shown. The configuration information includes the eleventh parameter corresponding to CSI-RS#0, the eleventh parameter corresponding to CSI-RS#1, ..., the eleventh parameter corresponding to CSI-RS#31. The eleventh parameter corresponding to CSI-RS#0 indicates that CSI-RS#0 corresponds to SSB#0, meaning that the coverage area of ​​CSI-RS#0 is within the coverage area of ​​SSB#0. Furthermore, the eleventh parameter corresponding to CSI-RS#0 indicates the relative spatial strength between CSI-RS#0 and SSB#0. The eleventh parameters corresponding to other CSI-RS are similar and will not be elaborated here.

[0211] If the eleventh parameter further indicates the relative spatial strength between the second reference signal and the first reference signal, then the relative spatial positions of different second reference signals and the first reference signal within the coverage area of ​​the same first reference signal may differ, thus further distinguishing the relative spatial relationship between different second reference signals and the first reference signal within the coverage area of ​​the same first reference signal. For example, the eleventh parameter may include a relational parameter, which can be equal to 0, 1, 2, etc., to indicate that the second reference signal is located in the main lobe, side lobe, or secondary strong side lobe of the first parameter signal, etc.

[0212] Optionally, if the configuration information includes the third parameter, the fourth parameter, and the logical sequence number of the second reference signal corresponding to each first reference signal, the eleventh parameter may indicate the relative spatial strength between the second reference signal and the corresponding first reference signal, and may not indicate the logical sequence number of the first reference signal corresponding to the second reference signal.

[0213] Optionally, if the configuration information includes the fifth parameter, the sixth parameter, and a set of logical numbers for all second reference signals, or if the configuration information includes the seventh parameter, the eighth parameter, and the logical number of the second reference signal corresponding to each resource set of the second reference signal, the eleventh parameter is used to indicate the logical number of the first reference signal corresponding to the second reference signal. Optionally, the eleventh parameter further indicates the relative spatial strength between the second reference signal and the corresponding first reference signal.

[0214] In one possible embodiment, the eleventh parameter is located in the resource set information of the second reference signal; or, the eleventh parameter is located in the resource information of the second reference signal. Based on this possible embodiment, the eleventh parameter can be configured in the existing resource set information or resource information without adding additional signaling to configure the eleventh parameter, thus reducing implementation complexity.

[0215] For example, if the eleventh parameter corresponds to the resource set of the second reference signal, then the eleventh parameter can be located in the resource set information of the second reference signal.

[0216] 902. The network device sends multiple first reference signals.

[0217] 903. The terminal measures the multiple first reference signals.

[0218] 904. The network device sends multiple second reference signals.

[0219] 905. Based on the measurement results corresponding to the plurality of first reference signals, the relative spatial position relationship between the plurality of first reference signals, the relative spatial position relationship between the plurality of second reference signals, and the relative spatial position relationship between the first reference signal and the second reference signal, the terminal measures the target reference signal among the plurality of second reference signals.

[0220] In one possible embodiment, the terminal can select and measure a target reference signal among the multiple second reference signals based on the measurement results corresponding to the multiple first reference signals, the relative spatial position relationship between the multiple first reference signals, the relative spatial position relationship between the multiple second reference signals, and the relative spatial position relationship between the first reference signal and the second reference signal, through a candidate model.

[0221] Optionally, the candidate model can be an AI model. For example, an AI model can also be called an AI network, a neural network model, or a machine learning model. The candidate model can be determined by the terminal itself through training, or it can be trained by the network device and then sent to the terminal. The candidate model can also be trained by other third-party network elements. In this case, the terminal can optionally send the information used to train the candidate model (such as the first training data described below) to the third-party network element. This allows the terminal to determine the information to send to the third-party network element, balancing information security and the terminal's computational complexity. Alternatively, the network device can optionally send the information used to train the candidate model to the third-party network element. Optionally, the third-party network element can also send the candidate model to the terminal. Optionally, this third-party network element can be a core network element such as an AMF network element or a UPF network element, or it can be an operation, administration, and maintenance (OAM) cloud server or other network element, without restriction.

[0222] In another possible embodiment, the terminal can use a non-AI algorithm implemented internally to select and measure a target reference signal among the multiple second reference signals based on the measurement results corresponding to multiple first reference signals, the relative spatial position relationship between the multiple first reference signals, the relative spatial position relationship between the multiple second reference signals, and the relative spatial position relationship between the first reference signal and the second reference signal.

[0223] Optionally, the target reference signal can be the N strongest second reference signals among a plurality of second reference signals. N is an integer greater than 0.

[0224] 906. The terminal sends the identification information of the target reference signal and the channel state information corresponding to the target reference signal to the network device. Correspondingly, the network device can receive the identification information of the target reference signal and the channel state information corresponding to the target reference signal sent by the terminal.

[0225] In this embodiment, after receiving the identification information of the target reference signal and the channel state information corresponding to the target reference signal, the network device can determine which second reference signals the reported channel state information was measured based on, based on the identification information of the target reference signal. Based on the channel state information corresponding to the target reference signal, the network device can reconstruct the channel state information corresponding to all second reference signals using an algorithm, that is, reconstruct the channel state information corresponding to all antenna ports of the second reference signal.

[0226] In one possible embodiment, if the configuration information includes the third parameter, the fourth parameter, and the logical sequence number of the second reference signal corresponding to each first reference signal, then the identification information of the target reference signal may include the logical sequence number X of the first reference signal. i And the logic number Y of the second reference signal corresponding to the first reference signal. j For example, such as Figure 12 As shown, assuming the target reference signal includes the first CSI-RS under SSB#0 and the last CSI-RS under SSB#1, then the identification information of the first CSI-RS under SSB#0 includes SSB#0 and CSI-RS#0. The identification information of the last CSI-RS under SSB#1 includes SSB#1 and CSI-RS#7.

[0227] In one possible embodiment, if the configuration information includes a fifth parameter, a sixth parameter, and a set of logical sequence numbers for all second reference signals, then the identification information of the target reference signal may include the logical sequence number Y of the target reference signal. j For example, such as Figure 14As shown, assuming the target reference signal includes the first CSI-RS under SSB#0 and the last CSI-RS under SSB#1, then the identification information of the first CSI-RS under SSB#0 is CSI-RS#0, and the identification information of the last CSI-RS under SSB#1 is CSI-RS#15.

[0228] In one possible embodiment, if the configuration information includes the seventh parameter, the eighth parameter, and the logical sequence number of the second reference signal corresponding to each resource set of the second reference signal, then the identification information of the target reference signal may include the logical sequence number CRI#k of the resource set of the second reference signal and the logical sequence number Y of the second reference signal. j For example, such as Figure 16 As shown, assuming the target reference signal includes the first CSI-RS under CRI#0 and the last CSI-RS under CRI#3, then the identification information of the first CSI-RS under CRI#0 includes CRI#0 and CSI-RS#0. The identification information of the last CSI-RS under CRI#3 includes CRI#3 and CSI-RS#3.

[0229] In one possible embodiment, the terminal can feed back signal status information of the target reference signal based on the codebook.

[0230] In one possible embodiment, the terminal may also send the channel state information of the first reference signal to the network device, so that the network device can combine the channel state information of the first reference signal and the signal state information of the target reference signal to further recover the channel state information corresponding to the full antenna port of the second reference signal with high accuracy.

[0231] In one possible embodiment, the terminal can compress and feed back the signal state information of the target reference signal and / or the signal state information of the first reference signal using an AI model (joint compressed feedback).

[0232] It can be seen that, based on Figure 9 The described method allows the terminal to quickly select a target reference signal from multiple second reference signals based on channel state information corresponding to a first reference signal, the relative spatial relationships between first reference signals, the relative spatial relationships between second reference signals, and the relative spatial relationships between first and second reference signals, in order to recover the channel state information corresponding to the full antenna port of the second reference signal. This eliminates the need for lengthy uplink channel state measurements to select the target reference signal from multiple second reference signals. Therefore, based on… Figure 9 The described method is beneficial for improving the accuracy of downlink channel measurements.

[0233] Please see Figure 18 , Figure 18 This is a flowchart illustrating another channel measurement method provided in an embodiment of this application, wherein:

[0234] 1801. The network device sends multiple first reference signals.

[0235] In the embodiments of this application, the description of the first reference signal and the second reference signal can be found in [reference needed]. Figure 9 The description in the corresponding embodiment, for example, can be found under step 901, and will not be repeated here. In this embodiment, the network device does not need to configure the relative spatial position relationships between multiple first reference signals, multiple second reference signals, or the relative spatial position relationships between the first and second reference signals to the terminal. After measuring multiple first reference signals, the terminal reports the channel state information corresponding to the multiple first reference signals to the network device. Based on the measurement results corresponding to the multiple first reference signals, the relative spatial position relationships between the multiple first reference signals, the relative spatial position relationships between the multiple second reference signals, and the relative spatial position relationships between the first and second reference signals, the network device selects the target reference signal to be measured from the multiple second reference signals, and then configures the resources of the target reference signal to the terminal. After measuring the target reference signal, the terminal reports the channel state information corresponding to the target reference signal to the network device. Based on the channel state information corresponding to the target reference signal, the network device recovers the channel state information corresponding to the full antenna port of the second reference signal.

[0236] 1802. The terminal measures the multiple first reference signals.

[0237] 1803. The terminal sends the channel state information corresponding to the plurality of first reference signals to the network device. Accordingly, the network device can receive the channel state information corresponding to the plurality of first reference signals sent by the terminal.

[0238] 1804. Based on the measurement results corresponding to the plurality of first reference signals, the relative spatial position relationships between the plurality of first reference signals, the relative spatial position relationships between the plurality of second reference signals, and the relative spatial position relationships between the first reference signals and the second reference signals, the network device sends the resource configuration information of the target reference signal among the plurality of second reference signals to the terminal. Accordingly, the terminal can receive the resource configuration information of the target reference signal.

[0239] In the embodiments of this application, the implementation principle of the network device selecting the target reference signal from multiple second reference signals and Figure 9In the corresponding embodiment, the implementation principle of the terminal selecting the target reference signal from multiple second reference signals is the same, which can be found in the description under step 905, and will not be repeated here. For an explanation of the relative spatial relationships between multiple first reference signals, multiple second reference signals, and the relative spatial relationships between first and second reference signals, please refer to... Figure 9 The descriptions in the corresponding embodiments are not repeated here.

[0240] 1805. The network device sends a target reference signal.

[0241] 1806. The terminal measures the target reference signal based on the resource configuration information of the target reference signal.

[0242] 1807. The terminal sends the channel state information corresponding to the target reference signal to the network device. Correspondingly, the network device can receive the channel state information corresponding to the target reference signal sent by the terminal.

[0243] In this embodiment of the application, the network device can restore the channel state information corresponding to all second reference signals based on the channel state information corresponding to the target reference signal, that is, restore the channel state information corresponding to all antenna ports of the second reference signal.

[0244] In one possible embodiment, the terminal can feed back signal state information of the target reference signal based on the codebook. Optionally, the terminal can additionally feed back channel state information of the first reference signal based on the codebook for reconstructing the channel state information corresponding to the full antenna ports of the second reference signal.

[0245] It can be seen that, based on Figure 18 The described method allows a network device to quickly select a target reference signal from multiple second reference signals based on channel state information corresponding to a first reference signal, the relative spatial relationships between first reference signals, the relative spatial relationships between second reference signals, and the relative spatial relationships between first and second reference signals, in order to recover the channel state information corresponding to the full antenna port of the second reference signal. This eliminates the need for lengthy uplink channel state measurements to select the target reference signal from multiple second reference signals. Therefore, based on… Figure 18 The described method is beneficial for improving the accuracy of downlink channel measurements.

[0246] It is understood that, in order to achieve the functions in the above embodiments, the access network device and terminal include hardware structures and / or software modules corresponding to perform each function. Those skilled in the art should readily recognize that, based on the units and method steps of the various examples described in conjunction with the embodiments disclosed in this application, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0247] Figure 19 This is a schematic diagram illustrating the structure of a possible communication device provided in the embodiments of this application. These communication devices can be used to implement the functions of the terminal or network device in the above method embodiments, and therefore can also achieve the beneficial effects of the above method embodiments. In the embodiments of this application, the communication device can be as follows: Figure 1 One of the terminals 120a-120j shown can also be as follows: Figure 1 The network devices 110a or 110b shown can also be modules (such as chips) applied to terminals or network devices.

[0248] like Figure 19 As shown, the communication device 1900 includes a processing unit 1910 and a transceiver unit 1920. The communication device 1900 is used to implement the above-mentioned... Figure 9 or Figure 18 The method embodiments shown illustrate the functions of the terminal or network device.

[0249] When the communication device 1900 is used to achieve Figure 9 The terminal function in the method embodiment shown is as follows:

[0250] The transceiver unit 1920 is used to receive configuration information sent by the network device; the configuration information is used to configure the relative spatial position relationship between multiple first reference signals, the relative spatial position relationship between multiple second reference signals, and the relative spatial position relationship between the first reference signal and the second reference signal; the coverage area corresponding to the first reference signal is greater than the coverage area corresponding to the second reference signal.

[0251] The transceiver unit 1920 is also used to measure multiple first reference signals;

[0252] Processing unit 1910 is used to measure a target reference signal among multiple second reference signals based on measurement results corresponding to multiple first reference signals, relative spatial position relationships between multiple first reference signals, relative spatial position relationships between multiple second reference signals, and relative spatial position relationships between first reference signals and second reference signals;

[0253] The transceiver unit 1920 is also used to send the identification information of the target reference signal and the channel state information corresponding to the target reference signal to the network device.

[0254] In one possible embodiment, the configuration information includes a first parameter, a second parameter, and a logical sequence number of a plurality of first reference signals; the first parameter indicates the number of first reference signals in the horizontal direction among the plurality of first reference signals, and the second parameter indicates the number of first reference signals in the vertical direction among the plurality of first reference signals.

[0255] In one possible embodiment, the logical sequence numbers of the first parameter, the second parameter, and the plurality of first reference signals are located in the resource set information of the first reference signals.

[0256] In one possible embodiment, the configuration information includes a third parameter, a fourth parameter, and a logical sequence number of the second reference signal corresponding to each first reference signal; the third parameter indicates the number of second reference signals in the horizontal direction within the coverage area of ​​the corresponding first reference signal, and the fourth parameter indicates the number of second reference signals in the vertical direction within the coverage area of ​​the corresponding first reference signal.

[0257] In one possible embodiment, the third parameter, the fourth parameter, and the logical sequence number of the second reference signal corresponding to each first reference signal are located in the resource set information of the first reference signal, or in the resource information of the first reference signal.

[0258] In one possible embodiment, the configuration information includes a fifth parameter, a sixth parameter, and a set of logical numbers for all the second reference signals. The fifth parameter indicates the number of second reference signals in the horizontal direction among all the second reference signals, and the sixth parameter indicates the number of second reference signals in the vertical direction among all the second reference signals.

[0259] In one possible embodiment, the logical sequence numbers of the fifth parameter, the sixth parameter, and all second reference signals are located in the resource configuration corresponding to the second reference signal, or in the resource set information of the second reference signal.

[0260] In one possible embodiment, the configuration information includes a seventh parameter, an eighth parameter, and a logical sequence number of the second reference signal corresponding to each resource set of the second reference signal; the seventh parameter indicates the number of second reference signals in the horizontal direction in the corresponding resource set, and the eighth parameter indicates the number of second reference signals in the vertical direction in the corresponding resource set.

[0261] The configuration information also includes the ninth parameter, the tenth parameter, and a set of logical numbers for all resource sets of the second reference signal. The ninth parameter indicates the number of resource sets in the horizontal direction in all resource sets of the second reference signal, and the tenth parameter indicates the number of resource sets in the vertical direction in all resource sets of the second reference signal.

[0262] In one possible embodiment, the seventh parameter, the eighth parameter, and the logical sequence number of the second reference signal corresponding to each resource set of the second reference signal are located within the resource configuration or resource set information of the second reference signal; and / or,

[0263] The logical sequence numbers of all resource sets of the ninth parameter, the tenth parameter, and the second reference signal are located in the resource configuration corresponding to the second reference signal.

[0264] In one possible embodiment, the configuration information includes an eleventh parameter corresponding to each resource set of the second reference signal, the eleventh parameter indicating the logical sequence number of the first reference signal corresponding to the resource set of the second reference signal, and / or, the relative spatial strength between the resource set of the second reference signal and the corresponding first reference signal; or,

[0265] The configuration information includes an eleventh parameter corresponding to each second reference signal. The eleventh parameter is used to indicate the logical sequence number of the first reference signal corresponding to the second reference signal, and / or the relative spatial strength between the second reference signal and the corresponding first reference signal.

[0266] In one possible embodiment, the eleventh parameter is located in the resource set information of the second reference signal; or, the eleventh parameter is located in the resource information of the second reference signal.

[0267] In one possible embodiment, the first reference signal is a synchronization signal block (SSB), and the second reference signal is a channel state information reference signal (CSI-RS); or, the first reference signal is CSI-RS, and the second reference signal is CSI-RS.

[0268] When the communication device 1900 is used to achieve Figure 9 The function of the network device in the method embodiment shown is as follows:

[0269] The transceiver unit 1920 is used to send configuration information to the terminal; the configuration information is used to configure the relative spatial position relationship between multiple first reference signals, the relative spatial position relationship between multiple second reference signals, and the relative spatial position relationship between the first reference signal and the second reference signal; the coverage area corresponding to the first reference signal is greater than the coverage area corresponding to the second reference signal.

[0270] The transceiver unit 1920 is also used to transmit multiple first reference signals;

[0271] The transceiver unit 1920 is also used to transmit multiple second reference signals;

[0272] The transceiver unit 1920 is also used to receive the identification information of the target reference signal and the channel state information corresponding to the target reference signal sent by the terminal. The target reference signal is determined from multiple second reference signals based on the measurement results corresponding to multiple first reference signals, the relative spatial position relationship between multiple first reference signals, the relative spatial position relationship between multiple second reference signals, and the relative spatial position relationship between the first reference signal and the second reference signal.

[0273] In one possible embodiment, the configuration information includes a first parameter, a second parameter, and a logical sequence number of a plurality of first reference signals; the first parameter indicates the number of first reference signals in the horizontal direction among the plurality of first reference signals, and the second parameter indicates the number of first reference signals in the vertical direction among the plurality of first reference signals.

[0274] In one possible embodiment, the logical sequence numbers of the first parameter, the second parameter, and the plurality of first reference signals are located in the resource set information of the first reference signals.

[0275] In one possible embodiment, the configuration information includes a third parameter, a fourth parameter, and a logical sequence number of the second reference signal corresponding to each first reference signal; the third parameter indicates the number of second reference signals in the horizontal direction within the coverage area of ​​the corresponding first reference signal, and the fourth parameter indicates the number of second reference signals in the vertical direction within the coverage area of ​​the corresponding first reference signal.

[0276] In one possible embodiment, the third parameter, the fourth parameter, and the logical sequence number of the second reference signal corresponding to each first reference signal are located in the resource set information of the first reference signal, or in the resource information of the first reference signal.

[0277] In one possible embodiment, the configuration information includes a fifth parameter, a sixth parameter, and a set of logical numbers for all the second reference signals. The fifth parameter indicates the number of second reference signals in the horizontal direction among all the second reference signals, and the sixth parameter indicates the number of second reference signals in the vertical direction among all the second reference signals.

[0278] In one possible embodiment, the logical sequence numbers of the fifth parameter, the sixth parameter, and all second reference signals are located in the resource configuration corresponding to the second reference signal, or in the resource set information of the second reference signal.

[0279] In one possible embodiment, the configuration information includes a seventh parameter, an eighth parameter, and a logical sequence number of the second reference signal corresponding to each resource set of the second reference signal; the seventh parameter indicates the number of second reference signals in the horizontal direction in the corresponding resource set, and the eighth parameter indicates the number of second reference signals in the vertical direction in the corresponding resource set.

[0280] The configuration information also includes the ninth parameter, the tenth parameter, and a set of logical numbers for all resource sets of the second reference signal. The ninth parameter indicates the number of resource sets in the horizontal direction in all resource sets of the second reference signal, and the tenth parameter indicates the number of resource sets in the vertical direction in all resource sets of the second reference signal.

[0281] In one possible embodiment, the seventh parameter, the eighth parameter, and the logical sequence number of the second reference signal corresponding to each resource set of the second reference signal are located within the resource configuration or resource set information of the second reference signal; and / or,

[0282] The logical sequence numbers of all resource sets of the ninth parameter, the tenth parameter, and the second reference signal are located in the resource configuration corresponding to the second reference signal.

[0283] In one possible embodiment, the configuration information includes an eleventh parameter corresponding to each resource set of the second reference signal, the eleventh parameter indicating the logical sequence number of the first reference signal corresponding to the resource set of the second reference signal, and / or, the relative spatial strength between the resource set of the second reference signal and the corresponding first reference signal; or,

[0284] The configuration information includes an eleventh parameter corresponding to each second reference signal. The eleventh parameter is used to indicate the logical sequence number of the first reference signal corresponding to the second reference signal, and / or the relative spatial strength between the second reference signal and the corresponding first reference signal.

[0285] In one possible embodiment, the eleventh parameter is located in the resource set information of the second reference signal; or, the eleventh parameter is located in the resource information of the second reference signal.

[0286] In one possible embodiment, the first reference signal is a synchronization signal block (SSB), and the second reference signal is a channel state information reference signal (CSI-RS); or, the first reference signal is CSI-RS, and the second reference signal is CSI-RS.

[0287] When the communication device 1900 is used to achieve Figure 18 The terminal function in the method embodiment shown is as follows:

[0288] Transceiver unit 1920 is used to measure multiple first reference signals;

[0289] The transceiver unit 1920 is also used to send channel state information corresponding to the plurality of first reference signals to the network device;

[0290] The transceiver unit 1920 is also used to receive resource configuration information of the target reference signal; the target reference signal is determined from the multiple second reference signals based on the measurement results corresponding to the multiple first reference signals, the relative spatial position relationship between the multiple first reference signals, the relative spatial position relationship between the multiple second reference signals, and the relative spatial position relationship between the first reference signal and the second reference signal.

[0291] The transceiver unit 1920 is also used to measure the target reference signal based on the resource configuration information of the target reference signal;

[0292] The transceiver unit 1920 is also used to send channel state information corresponding to the target reference signal to the network device.

[0293] In one possible embodiment, the first reference signal is a synchronization signal block (SSB), and the second reference signal is a channel state information reference signal (CSI-RS); or, the first reference signal is CSI-RS, and the second reference signal is CSI-RS.

[0294] When the communication device 1900 is used to achieve Figure 18 The function of the network device in the method embodiment shown is as follows:

[0295] Transceiver unit 1920 is used to transmit multiple first reference signals;

[0296] The transceiver unit 1920 is also used to receive channel state information corresponding to the plurality of first reference signals sent by the terminal;

[0297] The transceiver unit 1920 is also used to send resource configuration information of the target reference signal among the multiple second reference signals to the terminal based on the measurement results corresponding to the multiple first reference signals, the relative spatial position relationship between the multiple first reference signals, the relative spatial position relationship between the multiple second reference signals, and the relative spatial position relationship between the first reference signal and the second reference signal;

[0298] The transceiver unit 1920 is also used to transmit target reference signals;

[0299] The transceiver unit 1920 is also used to receive channel state information corresponding to the target reference signal sent by the terminal.

[0300] In one possible embodiment, the first reference signal is a synchronization signal block (SSB), and the second reference signal is a channel state information reference signal (CSI-RS); or, the first reference signal is CSI-RS, and the second reference signal is CSI-RS.

[0301] like Figure 20As shown, the communication device 2000 includes a processor 2010 and an interface circuit 2020. The processor 2010 and the interface circuit 2020 are coupled to each other. It is understood that the interface circuit 2020 can be a transceiver or an input / output interface. Optionally, the communication device 2000 may also include a memory 2030 for storing instructions executed by the processor 2010, or storing input data required by the processor 2010 to execute instructions, or storing data generated after the processor 2010 executes instructions.

[0302] When the communication device 2000 is used to achieve Figure 9 or Figure 18 In the method shown, the processor 2010 is used to implement the functions of the processing unit 1910, and the interface circuit 2020 is used to implement the functions of the transceiver unit 1920.

[0303] When the aforementioned communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above method embodiments. The terminal chip receives information from other modules (such as radio frequency modules or antennas) in the terminal, which is sent to the terminal by the network device; or, the terminal chip sends information to other modules (such as radio frequency modules or antennas) in the terminal, which is sent to the network device by the terminal.

[0304] When the aforementioned communication device is a module applied to a network device, the network device module implements the functions of the network device in the above method embodiments. The network device module receives information from other modules (such as a radio frequency module or antenna) in the network device, which is information sent by the terminal to the network device; or, the network device module sends information to other modules (such as a radio frequency module or antenna) in the network device, which is information sent by the network device to the terminal. Here, the network device module can be the baseband chip of the network device, or a DU (Digital Unit) or other modules. The DU can be a DU under an Open Radio Access Network (O-RAN) architecture.

[0305] In this application, entity A sends information to entity B, either directly or indirectly through other entities. Similarly, entity B receives information from entity A, either directly or indirectly through other entities. Entities A and B can be RAN nodes or terminals, or modules within RAN nodes or terminals. Information transmission and reception can be between RAN nodes and terminals, such as between a base station and a terminal; between two RAN nodes, such as between a CU and a DU; or between different modules within a single device, such as between a terminal chip and other modules of the terminal, or between a base station chip and other modules of the base station.

[0306] It is understood that the processor in the embodiments of this application can be a central processing unit, or other general-purpose processors, digital signal processors, application-specific integrated circuits, field-programmable gate arrays, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. A general-purpose processor can be a microprocessor or any conventional processor.

[0307] The method steps in the embodiments of this application can be implemented in hardware or by a processor executing software instructions. The software instructions can consist of corresponding software modules, which can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disks, portable hard disks, optical discs, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and storage medium can reside in an application-specific integrated circuit (ASIC). Alternatively, the ASIC can reside in a network device or terminal. Of course, the processor and storage medium can also exist as discrete components in a network device or terminal.

[0308] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are performed entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable device. The computer program or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video optical disc; or it can be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both types of storage media.

[0309] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0310] In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. In the textual description of this application, the character " / " generally indicates an "or" relationship between the preceding and following related objects; in the formulas of this application, the character " / " indicates a "division" relationship between the preceding and following related objects. "Including at least one of A, B, and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B, and C.

[0311] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

Claims

1. A channel measurement method, characterized in that, The method includes: The system receives configuration information sent by a network device; the configuration information is used to configure the relative spatial position relationship between multiple first reference signals, the relative spatial position relationship between multiple second reference signals, and the relative spatial position relationship between the first reference signal and the second reference signal; the coverage area corresponding to the first reference signal is greater than the coverage area corresponding to the second reference signal. Measure the plurality of first reference signals; Based on the measurement results corresponding to the plurality of first reference signals, the relative spatial position relationship between the plurality of first reference signals, the relative spatial position relationship between the plurality of second reference signals, and the relative spatial position relationship between the first reference signal and the second reference signal, the target reference signal among the plurality of second reference signals is measured; The identification information of the target reference signal and the channel state information corresponding to the target reference signal are sent to the network device.

2. The method according to claim 1, characterized in that, The configuration information includes a first parameter, a second parameter, and a logical sequence number of the plurality of first reference signals; the first parameter indicates the number of first reference signals in the horizontal direction among the plurality of first reference signals, and the second parameter indicates the number of first reference signals in the vertical direction among the plurality of first reference signals.

3. The method according to claim 2, characterized in that, The logical sequence numbers of the first parameter, the second parameter, and the plurality of first reference signals are located in the resource set information of the first reference signals.

4. The method according to any one of claims 1 to 3, characterized in that, The configuration information includes a third parameter, a fourth parameter, and a logical sequence number of the second reference signal corresponding to each first reference signal; the third parameter indicates the number of second reference signals in the horizontal direction within the coverage area of ​​the corresponding first reference signal, and the fourth parameter indicates the number of second reference signals in the vertical direction within the coverage area of ​​the corresponding first reference signal.

5. The method according to claim 4, characterized in that, The logical sequence number of the third parameter, fourth parameter and second reference signal corresponding to each first reference signal is located in the resource set information of the first reference signal, or in the resource information of the first reference signal.

6. The method according to any one of claims 1 to 3, characterized in that, The configuration information includes a fifth parameter, a sixth parameter, and a set of logical numbers for all second reference signals. The fifth parameter indicates the number of second reference signals in the horizontal direction among all second reference signals, and the sixth parameter indicates the number of second reference signals in the vertical direction among all second reference signals.

7. The method according to claim 6, characterized in that, The fifth parameter, the sixth parameter, and the logical sequence number of all second reference signals are located in the resource configuration corresponding to the second reference signal, or in the resource set information of the second reference signal.

8. The method according to any one of claims 1 to 3, characterized in that, The configuration information includes the seventh parameter, the eighth parameter, and the logical sequence number of the second reference signal corresponding to each resource set of the second reference signal; the seventh parameter indicates the number of second reference signals in the horizontal direction of the corresponding resource set, and the eighth parameter indicates the number of second reference signals in the vertical direction of the corresponding resource set; The configuration information also includes a ninth parameter, a tenth parameter, and a set of logical sequence numbers for all resource sets of the second reference signal. The ninth parameter indicates the number of resource sets in the horizontal direction in all resource sets of the second reference signal, and the tenth parameter indicates the number of resource sets in the vertical direction in all resource sets of the second reference signal.

9. The method according to claim 8, characterized in that, The seventh parameter, eighth parameter, and logical sequence number of each resource set corresponding to the second reference signal are located within the resource configuration or resource set information of the second reference signal; and / or, The logical sequence numbers of the ninth parameter, the tenth parameter, and all resource sets of the second reference signal are located in the resource configuration corresponding to the second reference signal.

10. The method according to any one of claims 1 to 9, characterized in that, The configuration information includes an eleventh parameter corresponding to each resource set of the second reference signal. The eleventh parameter indicates the logical sequence number of the first reference signal corresponding to the resource set of the second reference signal, and / or the relative spatial strength between the resource set of the second reference signal and the corresponding first reference signal; or... The configuration information includes an eleventh parameter corresponding to each second reference signal. The eleventh parameter is used to indicate the logical sequence number of the first reference signal corresponding to the second reference signal, and / or the relative spatial strength between the second reference signal and the corresponding first reference signal.

11. The method according to claim 10, characterized in that, The eleventh parameter is located in the resource set information of the second reference signal; or, the eleventh parameter is located in the resource information of the second reference signal.

12. The method according to any one of claims 1 to 11, characterized in that, The first reference signal is a synchronization signal block (SSB), and the second reference signal is a channel state information reference signal (CSI-RS); or, the first reference signal is a CSI-RS, and the second reference signal is a CSI-RS.

13. A channel measurement method, characterized in that, The method includes: Configuration information is sent to the terminal; the configuration information is used to configure the relative spatial position relationship between multiple first reference signals, the relative spatial position relationship between multiple second reference signals, and the relative spatial position relationship between the first reference signal and the second reference signal; the coverage area corresponding to the first reference signal is greater than the coverage area corresponding to the second reference signal; Send the plurality of first reference signals; Send the plurality of second reference signals; The terminal receives the identification information of the target reference signal and the channel state information corresponding to the target reference signal. The target reference signal is determined from the plurality of second reference signals based on the measurement results corresponding to the plurality of first reference signals, the relative spatial position relationship between the plurality of first reference signals, the relative spatial position relationship between the plurality of second reference signals, and the relative spatial position relationship between the first reference signal and the second reference signal.

14. The method according to claim 13, characterized in that, The configuration information includes a first parameter, a second parameter, and a logical sequence number of the plurality of first reference signals; the first parameter indicates the number of first reference signals in the horizontal direction among the plurality of first reference signals, and the second parameter indicates the number of first reference signals in the vertical direction among the plurality of first reference signals.

15. The method according to claim 14, characterized in that, The logical sequence numbers of the first parameter, the second parameter, and the plurality of first reference signals are located in the resource set information of the first reference signals.

16. The method according to any one of claims 13 to 15, characterized in that, The configuration information includes a third parameter, a fourth parameter, and a logical sequence number of the second reference signal corresponding to each first reference signal; the third parameter indicates the number of second reference signals in the horizontal direction within the coverage area of ​​the corresponding first reference signal, and the fourth parameter indicates the number of second reference signals in the vertical direction within the coverage area of ​​the corresponding first reference signal.

17. The method according to claim 16, characterized in that, The logical sequence number of the third parameter, fourth parameter and second reference signal corresponding to each first reference signal is located in the resource set information of the first reference signal, or in the resource information of the first reference signal.

18. The method according to any one of claims 13 to 15, characterized in that, The configuration information includes a fifth parameter, a sixth parameter, and a set of logical numbers for all second reference signals. The fifth parameter indicates the number of second reference signals in the horizontal direction among all second reference signals, and the sixth parameter indicates the number of second reference signals in the vertical direction among all second reference signals.

19. The method according to claim 18, characterized in that, The fifth parameter, the sixth parameter, and the logical sequence number of all second reference signals are located in the resource configuration corresponding to the second reference signal, or in the resource set information of the second reference signal.

20. The method according to any one of claims 13 to 15, characterized in that, The configuration information includes the seventh parameter, the eighth parameter, and the logical sequence number of the second reference signal corresponding to each resource set of the second reference signal; the seventh parameter indicates the number of second reference signals in the horizontal direction of the corresponding resource set, and the eighth parameter indicates the number of second reference signals in the vertical direction of the corresponding resource set; The configuration information also includes a ninth parameter, a tenth parameter, and a set of logical sequence numbers for all resource sets of the second reference signal. The ninth parameter indicates the number of resource sets in the horizontal direction in all resource sets of the second reference signal, and the tenth parameter indicates the number of resource sets in the vertical direction in all resource sets of the second reference signal.

21. The method according to claim 20, characterized in that, The seventh parameter, eighth parameter, and logical sequence number of each resource set corresponding to the second reference signal are located within the resource configuration or resource set information of the second reference signal; and / or, The logical sequence numbers of the ninth parameter, the tenth parameter, and all resource sets of the second reference signal are located in the resource configuration corresponding to the second reference signal.

22. The method according to any one of claims 13 to 21, characterized in that, The configuration information includes an eleventh parameter corresponding to each resource set of the second reference signal. The eleventh parameter indicates the logical sequence number of the first reference signal corresponding to the resource set of the second reference signal, and / or the relative spatial strength between the resource set of the second reference signal and the corresponding first reference signal; or... The configuration information includes an eleventh parameter corresponding to each second reference signal. The eleventh parameter is used to indicate the logical sequence number of the first reference signal corresponding to the second reference signal, and / or the relative spatial strength between the second reference signal and the corresponding first reference signal.

23. The method according to claim 22, characterized in that, The eleventh parameter is located in the resource set information of the second reference signal; or, the eleventh parameter is located in the resource information of the second reference signal.

24. The method according to any one of claims 13 to 23, characterized in that, The first reference signal is a synchronization signal block (SSB), and the second reference signal is a channel state information reference signal (CSI-RS); or, the first reference signal is a CSI-RS, and the second reference signal is a CSI-RS.

25. A communication apparatus comprising a module for performing the method as claimed in any one of claims 1 to 12, or comprising a module for performing the method as claimed in any one of claims 13 to 24.

26. A communication device, characterized in that, The device includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices and transmit them to the processor or to send signals from the processor to other communication devices, and the processor is used to implement the method as described in any one of claims 1 to 12 through logic circuits or executable code instructions, or the processor is used to implement the method as described in any one of claims 13 to 24 through logic circuits or executable code instructions.

27. A computer-readable storage medium, characterized in that, The storage medium stores a computer program or instructions that, when executed by a communication device, implement the method as described in any one of claims 1 to 12, or implement the method as described in any one of claims 13 to 24.

28. A computer program product comprising a computer program or instructions, characterized in that, When the computer program or instructions are executed by the communication device, they implement the method as described in any one of claims 1 to 12, or when the computer program or instructions are executed by the communication device, they implement the method as described in any one of claims 13 to 24.

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