Communication method and apparatus

Abstract

The present application provides a communication method. In the method, a first network function can determine information of a large grid (a first grid) according to a coarse positioning result, and indicates information of a small grid corresponding to the large grid to an access network device, such that the access network device or a first terminal device determines information of a small grid (a sub-grid) corresponding to the first terminal device; and therefore, the access network device or the terminal device receives the determined information of the small grid corresponding to the first terminal device, and a channel feature set of the first terminal device is determined, implementing channel map-assisted communication.

Description

A communication method and apparatus

[0001] This application claims priority to the Chinese Patent Application No. 202410871114.7, filed on June 27, 2024, and entitled "A communication method and apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication, and more particularly, to a communication method and apparatus. BACKGROUND

[0003] Positioning assisted communication mainly involves using positioning technology to assist the communication process, thereby improving the efficiency and accuracy of communication. High-precision positioning is one of the important indicators in the communication system, and is applied in many scenarios of mobile communication, such as factories, intelligent robots, etc.

[0004] Current positioning methods mainly extract multi-path information based on channel measurement to obtain accurate physical location information, and then assist communication according to the physical location information. For example, existing cellular positioning obtains the position of a user equipment (UE) by measuring the angle and distance information between the UE and the base station. For example, based on time difference of arrival (TDOA), angle of arrival (AOA), multi-round trip time (Multi-RTT), etc. A plurality of positioning technologies, through the measurement of sounding reference signals and positioning reference signals, realize the calculation of the target position. This results in a loss of information, such as non-line of sight (NLOS) path energy, time delay, etc. Therefore, how to perform positioning assisted communication has become a problem to be solved. SUMMARY

[0005] The present application provides a communication method and a communication apparatus, which can realize high-precision positioning assisted communication.

[0006] In a first aspect, a communication method is provided. The method can be applied to a first network function side, i.e., the method can be executed by a first network function, or can be executed by a component (such as a chip or a chip system or a circuit or a communication module) having the function of the first network function. The chip is, for example, a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core. The present application does not limit this. In the following, the first network function will be mainly taken as an example for description.

[0007] The method can comprise: receiving first information, the first information being used to indicate information of a first grid, the information of the first grid comprising a channel feature set of at least one terminal device, the channel feature set being used to assist communication, the at least one terminal device comprising a first terminal device; sending first indication information to an access network device according to the information of the first grid, the first indication information being used to indicate information of at least one sub-grid, each of the at least one sub-grid belonging to the first grid; receiving second information, the second information being used to indicate information of a sub-grid corresponding to the first terminal device, the information of the sub-grid corresponding to the first terminal device comprising a channel feature set of the first terminal device, the information of the sub-grid corresponding to the first terminal device being determined by the first terminal device or the access network device based on the information of the at least one sub-grid, the sub-grid corresponding to the first terminal device belonging to the at least one sub-grid.

[0008] The first network function is a channel map management function, and the channel map is stored or saved on the first network function, that is, the channel features based on grid position information are stored on the first network function, for example, the channel features of x grids are stored on the first network function, wherein each grid comprises y sub-grids.

[0009] The first information can comprise position information of coarse positioning of the first terminal device. The position information of coarse positioning can be obtained by a sounding reference signal (SRS) measurement method, or can be obtained by a global positioning system (GPS) positioning method, and the embodiments of the present application do not limit this.

[0010] Based on the above technical solutions, the first network function can determine the information of a large grid (the first grid) based on the result of coarse positioning, and indicate the information of a small grid corresponding to the large grid to the access network device, so as to determine the information of a small grid (a sub-grid) corresponding to the first terminal device by the access network device or the first terminal device, thereby receiving the determined information of the small grid corresponding to the first terminal device from the access network device or the terminal device, determining the channel feature set of the first terminal device, and further implementing channel map assisted communication.

[0011] In combination with the first aspect, in some implementations of the first aspect, the first terminal device determines the information of the sub-grid corresponding to the first terminal device, and the first network function receives the second information from the first terminal device.

[0012] In some implementations of the first aspect, the access network device determines information of a sub-grid corresponding to the first terminal device, and the first network function receives the second information from the access network device.

[0013] In some implementations of the first aspect, the first indication information is further used to instruct the access network device to send second indication information to the first terminal device, and the second indication information is used to instruct the first terminal device of the information of the at least one sub-grid.

[0014] In the technical solution, the access network device indicates the information of the sub-grid in the first grid to the first terminal device, which is used for the first terminal device to determine the information of the sub-grid corresponding to the first terminal device.

[0015] In some implementations of the first aspect, sending the first indication information to the access network device according to the information of the first grid comprises: determining the information of the at least one sub-grid according to the information of the first grid; and sending the first indication information.

[0016] In the technical solution, the first network function can determine the sub-grid under the first grid, and send the information of the sub-grid under the first grid to the access network device through the first indication information.

[0017] In some implementations of the first aspect, the channel feature set of the first terminal device is determined according to the information of the sub-grid corresponding to the first terminal device.

[0018] In some implementations of the first aspect, the channel feature set comprises at least one of information of a multipath between the at least one terminal device and the access network device, a channel statistical covariance matrix, an angle spectrum, and a time delay spectrum.

[0019] In some implementations of the first aspect, the first information comprises coarse positioning position information of the first terminal device and / or an index of a first grid corresponding to the first terminal device.

[0020] The coarse positioning position information can be a position coordinate, a relative position, a topological relationship, etc., which is not limited in the embodiments of the present application.

[0021] The correspondence between the coarse positioning result and the index of the large grid can be predefined.

[0022] In some implementations of the first aspect, the first information further comprises a positioning accuracy error of the coarse positioning.

[0023] In some implementations of the first aspect, the first indication information includes at least one of base or map information corresponding to each of the at least one sub-grid, an index corresponding to each of the at least one sub-grid, or position information of each of the at least one sub-grid.

[0024] In some implementations of the first aspect, the access network device can store a channel map, and the first indication information can include an index of the first grid, and the access network device can determine information of a sub-grid of the first grid according to the index of the first grid.

[0025] In some implementations of the first aspect, the second information includes an index or position information of a sub-grid corresponding to the first terminal device.

[0026] In a second aspect, a communication method is provided, which can be applied to a terminal device side, i.e., the method can be executed by a terminal device or a component (e.g., a chip or a chip system or a circuit or a communication module) having a terminal device function, where the chip is, for example, a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core. The present application does not limit this. Hereinafter, the first terminal device is mainly taken as an example for description.

[0027] The method can include: receiving, by a first terminal device, second indication information and a first reference signal, the second indication information being used to indicate information of at least one sub-grid, each of the at least one sub-grid belonging to a first grid, information of the first grid including a channel feature set of at least one terminal device, the channel feature set being used to assist communication, the at least one terminal device including the first terminal device; determining, according to the second indication information and the first reference signal, information of a sub-grid corresponding to the first terminal device, the information of the sub-grid corresponding to the first terminal device including a channel feature set of the first terminal device, the sub-grid corresponding to the first terminal device belonging to the at least one sub-grid.

[0028] Based on the above technical solution, the first terminal device can determine the information of the sub-grid corresponding to the first terminal device based on the information of the at least one sub-grid indicated by the access network device and the first reference signal, so as to determine the channel feature set of a terminal device, and further implement channel map assisted communication.

[0029] With reference to the second aspect, in some implementations of the second aspect, the second information is transmitted to the first network function, and the second information is used to indicate information of a subgrid corresponding to the first terminal device.

[0030] In this technical solution, the first terminal device can indicate the determined information of the subgrid corresponding to the first terminal device to the first network function, so as to enable the first network function to determine a channel feature set of a terminal device, thereby realizing channel map assisted communication.

[0031] With reference to the second aspect, in some implementations of the second aspect, the channel feature set includes at least one of information of a multipath between the at least one terminal device and the access network device, a channel statistical covariance matrix, an angle spectrum, and a time delay spectrum.

[0032] With reference to the second aspect, in some implementations of the second aspect, the second indication information includes at least one of base or map information corresponding to each of the at least one subgrid, an index corresponding to each of the at least one subgrid, and position information of each of the at least one subgrid.

[0033] With reference to the second aspect, in some implementations of the second aspect, the second information includes an index or position information of the subgrid corresponding to the first terminal device.

[0034] In a third aspect, a communication method is provided, which can be applied to the access network device side, that is, the method can be executed by the access network device, or can be executed by a component (for example, a chip or a chip system or a circuit or a communication module) having an access network device function, wherein the chip is, for example, a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core. The present application does not limit this. In the following, the access network device is mainly taken as an example for description.

[0035] The method can comprise: receiving first indication information from a first network function, the first indication information being used to indicate information of at least one sub-grid, each of the at least one sub-grid belonging to a first grid, information of the first grid comprising a channel feature set corresponding to at least one terminal device, the channel feature set being used to assist communication, the at least one terminal device comprising a first terminal device; sending second indication information to the first terminal device according to the first indication information, the second indication information being used to indicate information of the at least one sub-grid; and sending a first reference signal to the first terminal device, the first reference signal and the second indication information being used to determine information of a sub-grid corresponding to the first terminal device, the information of the sub-grid corresponding to the first terminal device indicating the channel feature set of the first terminal device.

[0036] Based on the above technical solution, the access network device sends information of at least one sub-grid and a first reference signal to a first terminal device based on first indication information sent by a first network function, which is used for the first terminal device to determine information of a sub-grid corresponding to the first terminal device, so that a channel feature set of a terminal device can be determined, and channel map assisted communication is realized.

[0037] In combination with the third aspect, in some implementations of the third aspect, the channel feature set comprises at least one of information of a multipath between the at least one terminal device and the access network device, a channel statistical covariance matrix, an angle spectrum, and a time delay spectrum.

[0038] In combination with the third aspect, in some implementations of the third aspect, the first indication information comprises at least one of base or map information corresponding to each of the at least one sub-grid, an index corresponding to each of the at least one sub-grid, and position information of each of the at least one sub-grid.

[0039] In combination with the third aspect, in some implementations of the third aspect, the second indication information comprises at least one of base or map information corresponding to each of the at least one sub-grid, an index corresponding to each of the at least one sub-grid, and position information of each of the at least one sub-grid.

[0040] In a fourth aspect, a communication method is provided, which can be applied to an access network device side, i.e., the method can be executed by an access network device or a component (e.g., a chip or a chip system or a circuit or a communication module) with an access network device function, where the chip is, for example, a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core. The present application does not limit this. In the following, the access network device is mainly taken as an example for description.

[0041] The method can include: receiving first indication information from a first network function, the first indication information being used to indicate information of at least one sub-grid to the access network device, each sub-grid in the at least one sub-grid belonging to a first grid, information of the first grid including a channel feature set corresponding to at least one terminal device, the channel feature set being used to assist communication, the at least one terminal device including a first terminal device; receiving a second reference signal from the first terminal device; and determining information of a sub-grid corresponding to the first terminal device according to the first indication information and the second reference signal, the information of the sub-grid corresponding to the first terminal device indicating a channel feature set of the first terminal device, the sub-grid corresponding to the first terminal device belonging to the at least one sub-grid.

[0042] Based on the above technical solution, the access network device can determine the information of the sub-grid corresponding to the first terminal device based on the information of the at least one sub-grid indicated by the first network function and the second reference signal from the first terminal device, so as to determine the channel feature set of a terminal device, and further implement channel map assisted communication.

[0043] In combination with the fourth aspect, in some implementations of the fourth aspect, second information is sent to the first network function, the second information being used to indicate the information of the sub-grid corresponding to the first terminal device.

[0044] In the technical solution, the access network device can indicate the determined information of the sub-grid corresponding to the first terminal device to the first network function, so as to determine the channel feature set of a terminal device by the first network function, and further implement channel map assisted communication.

[0045] In combination with the fourth aspect, in some implementations of the fourth aspect, the channel feature set includes at least one of information of a multipath between the at least one terminal device and the access network device, a channel statistical covariance matrix, an angle spectrum, and a time delay spectrum.

[0046] In a fourth aspect, in some implementations of the fourth aspect, the first information includes position information of a coarse positioning of the first terminal device and / or an index of a first grid corresponding to the first terminal device.

[0047] In a fourth aspect, in some implementations of the fourth aspect, the first information further includes a positioning accuracy error of the coarse positioning.

[0048] In a fourth aspect, in some implementations of the fourth aspect, the first indication information includes at least one of base or map information corresponding to each of the at least one sub-grid, an index corresponding to each of the at least one sub-grid, and position information of each of the at least one sub-grid.

[0049] In a fourth aspect, in some implementations of the fourth aspect, the second information includes an index or position information of a sub-grid corresponding to the first terminal device.

[0050] In a fifth aspect, a communication apparatus is provided. The apparatus can be a first network function, or a component (e.g., a chip or a chip system or a circuit or a communication module) of the first network function. The chip can be a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core. The present application does not limit this. Hereinafter, the first network function will be mainly taken as an example for illustration.

[0051] The apparatus can include a transceiver configured to receive first information, the first information being used to indicate information of a first grid, the information of the first grid including a channel feature set of at least one terminal device, the channel feature set being used to assist communication, the at least one terminal device including a first terminal device; a processor configured to send first indication information to an access network device according to the information of the first grid, the first indication information being used to indicate information of at least one sub-grid, each of the at least one sub-grid belonging to the first grid; and the transceiver is further configured to receive second information, the second information being used to indicate information of a sub-grid corresponding to the first terminal device, the information of the sub-grid corresponding to the first terminal device including a channel feature set of the first terminal device, the information of the sub-grid corresponding to the first terminal device being determined by the first terminal device or the access network device based on the information of the at least one sub-grid, the sub-grid corresponding to the first terminal device belonging to the at least one sub-grid.

[0052] With reference to the fifth aspect, in some implementations of the fifth aspect, the transceiver is configured to receive the second information from the first terminal device.

[0053] With reference to the fifth aspect, in some implementations of the fifth aspect, the transceiver is configured to receive the second information from the access network device.

[0054] With reference to the fifth aspect, in some implementations of the fifth aspect, the first indication information is further configured to instruct the access network device to send second indication information to the first terminal device, the second indication information being configured to indicate the information of the at least one sub-grid to the first terminal device.

[0055] With reference to the fifth aspect, in some implementations of the fifth aspect, the processing unit is specifically configured to determine the information of the at least one sub-grid according to the information of the first grid; and the transceiver is configured to send the first indication information.

[0056] With reference to the fifth aspect, in some implementations of the fifth aspect, the processing unit is specifically configured to determine the channel feature set of the first terminal device according to the information of the sub-grid corresponding to the first terminal device.

[0057] With reference to the fifth aspect, in some implementations of the fifth aspect, the channel feature set comprises at least one of information of a multipath between the at least one terminal device and the access network device, a channel statistical covariance matrix, an angle spectrum, and a time delay spectrum.

[0058] With reference to the fifth aspect, in some implementations of the fifth aspect, the first information comprises coarse positioning position information of the first terminal device and / or an index of the first grid corresponding to the first terminal device.

[0059] With reference to the fifth aspect, in some implementations of the fifth aspect, the first information further comprises a positioning accuracy error of the coarse positioning.

[0060] With reference to the fifth aspect, in some implementations of the fifth aspect, the first indication information comprises at least one of base or map information corresponding to each of the at least one sub-grid, an index corresponding to each of the at least one sub-grid, and position information of each of the at least one sub-grid.

[0061] With reference to the fifth aspect, in some implementations of the fifth aspect, the access network device can store a channel map, and the first indication information can comprise an index of the first grid, and the access network device can determine information of a sub-grid of the first grid according to the index of the first grid.

[0062] With reference to the fifth aspect, in some implementations of the fifth aspect, the second information includes index or location information of the sub-grid corresponding to the first terminal device.

[0063] The technical effects of the fifth aspect can refer to those of the first aspect, which will not be repeated here.

[0064] The sixth aspect provides a communication apparatus, which can be a terminal device or a component (for example, a chip or a chip system or a circuit or a communication module) of the terminal device. The chip can be a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core. The present application does not limit this. Hereinafter, the terminal device will be mainly taken as an example for description.

[0065] The apparatus can include: a transceiver, configured to receive second indication information and a first reference signal, the second indication information being used to indicate information of at least one sub-grid, each sub-grid in the at least one sub-grid belonging to a first grid, the information of the first grid including a channel feature set of at least one terminal device, the channel feature set being used to assist communication, the at least one terminal device including a first terminal device; and a processing unit, configured to determine, according to the second indication information and the first reference signal, information of a sub-grid corresponding to the first terminal device, the information of the sub-grid corresponding to the first terminal device including a channel feature set of the first terminal device, the sub-grid corresponding to the first terminal device belonging to the at least one sub-grid.

[0066] With reference to the sixth aspect, in some implementations of the sixth aspect, the transceiver is further configured to send, to a first network function, second information used to indicate information of the sub-grid corresponding to the first terminal device.

[0067] With reference to the sixth aspect, in some implementations of the sixth aspect, the channel feature set includes at least one of information of a multipath between the at least one terminal device and the access network device, a channel statistical covariance matrix, an angle spectrum, or a delay spectrum.

[0068] With reference to the sixth aspect, in some implementations of the sixth aspect, the second indication information includes at least one of base or map information corresponding to each sub-grid in the at least one sub-grid, an index corresponding to each sub-grid in the at least one sub-grid, or location information of each sub-grid in the at least one sub-grid.

[0069] With reference to the sixth aspect, in some implementations of the sixth aspect, the second information includes index or location information of the sub-grid corresponding to the first terminal device.

[0070] The technical effects of the sixth aspect can refer to those of the second aspect, which will not be repeated here.

[0071] In a seventh aspect, a communication apparatus is provided. The apparatus can be an access network device, or a component (e.g., a chip or a chip system or a circuit or a communication module) of an access network device. The chip can be a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip that contains a modem core. The present application does not limit this. Hereinafter, the terminal device will be mainly taken as an example for illustration.

[0072] The apparatus can include a transceiver configured to receive first indication information from a first network function, the first indication information indicating information of at least one sub-grid, each of the at least one sub-grid belonging to a first grid, the information of the first grid including a channel feature set corresponding to at least one terminal device, the channel feature set being used to assist communication, the at least one terminal device including a first terminal device; a processor configured to send second indication information to the first terminal device according to the first indication information, the second indication information indicating information of the at least one sub-grid; and the transceiver is further configured to send a first reference signal to the first terminal device, the first reference signal and the second indication information being used to determine information of a sub-grid corresponding to the first terminal device, the information of the sub-grid corresponding to the first terminal device indicating the channel feature set of the first terminal device.

[0073] With reference to the seventh aspect, in some implementations of the seventh aspect, the channel feature set includes at least one of information of a multipath between the at least one terminal device and the access network device, a channel statistical covariance matrix, an angle spectrum, or a delay spectrum.

[0074] With reference to the seventh aspect, in some implementations of the seventh aspect, the first indication information includes at least one of base or map information corresponding to each of the at least one sub-grid, an index corresponding to each of the at least one sub-grid, or location information of each of the at least one sub-grid.

[0075] In a seventh aspect, in some implementations of the seventh aspect, the second indication information includes at least one of base or map information corresponding to each of the at least one sub-grid, an index corresponding to each of the at least one sub-grid, or location information of each of the at least one sub-grid.

[0076] An eighth aspect provides a communication apparatus, which can be an access network device or a component (e.g., a chip or a chip system or a circuit or a communication module) of an access network device. The chip can be a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip that contains a modem core. The present application does not limit this. The following mainly takes a terminal device as an example for description.

[0077] The apparatus can include a transceiver configured to receive first indication information from a first network function, the first indication information indicating information of at least one sub-grid to the access network device, each of the at least one sub-grid belonging to a first grid, the information of the first grid including a channel feature set corresponding to at least one terminal device, the channel feature set being used to assist communication, the at least one terminal device including a first terminal device; and the transceiver is further configured to receive a second reference signal from the first terminal device. A processing unit is configured to determine information of a sub-grid corresponding to the first terminal device according to the first indication information and the second reference signal, the information of the sub-grid corresponding to the first terminal device indicating a channel feature set of the first terminal device, the sub-grid corresponding to the first terminal device belonging to the at least one sub-grid.

[0078] In conjunction with the eighth aspect, in some implementations of the eighth aspect, the second information is sent to the first network function, the second information indicating information of the sub-grid corresponding to the first terminal device.

[0079] In conjunction with the eighth aspect, in some implementations of the eighth aspect, the channel feature set includes at least one of information of a multipath between the at least one terminal device and the access network device, a channel statistical covariance matrix, an angle spectrum, or a delay spectrum.

[0080] In conjunction with the eighth aspect, in some implementations of the eighth aspect, the first information includes location information of coarse positioning of the first terminal device and / or an index of a first grid corresponding to the first terminal device.

[0081] In conjunction with the eighth aspect, in some implementations of the eighth aspect, the first information further includes a positioning accuracy error of the coarse positioning.

[0082] With reference to the eighth aspect, in some implementations of the eighth aspect, the first indication information includes at least one of base or map information corresponding to each of the at least one sub-grid, an index corresponding to each of the at least one sub-grid, or location information of each of the at least one sub-grid.

[0083] With reference to the eighth aspect, in some implementations of the eighth aspect, the second information includes an index or location information of the sub-grid corresponding to the first terminal device.

[0084] With reference to the ninth aspect, in some implementations of the ninth aspect, the access network device is further configured to send, to the first terminal device, second indication information according to the first indication information, the second indication information being used to indicate the information of the at least one sub-grid; and the access network device is further configured to send, to the first terminal device, a first reference signal; and the second indication information and the first reference signal are used by the first terminal device to determine the information of the sub-grid corresponding to the first terminal device.

[0085] With reference to the ninth aspect, in some implementations of the ninth aspect, the access network device is further configured to send, to the first terminal device, second indication information according to the first indication information, the second indication information being used to indicate the information of the at least one sub-grid; and the access network device is further configured to send, to the first terminal device, a first reference signal; and the second indication information and the first reference signal are used by the first terminal device to determine the information of the sub-grid corresponding to the first terminal device.

[0086] With reference to the ninth aspect, in some implementations of the ninth aspect, the first network function is further configured to receive the second information from the first terminal device.

[0087] In some implementations of the ninth aspect, in conjunction with the ninth aspect, the access network device is configured to receive a second reference signal from the first terminal device; and the access network device is further configured to determine the information of the sub-grid corresponding to the first terminal device according to the first indication information and the second reference signal.

[0088] In some implementations of the ninth aspect, in conjunction with the ninth aspect, the access network device is further configured to send the second information to the first network function.

[0089] In some implementations of the ninth aspect, in conjunction with the ninth aspect, the first network function is further configured to determine the channel feature set of the first terminal device according to the information of the sub-grid corresponding to the first terminal device.

[0090] In some implementations of the ninth aspect, in conjunction with the ninth aspect, the channel feature set includes at least one of information of a multipath between the at least one terminal device and the access network device, a channel statistical covariance matrix, an angle spectrum, and a time delay spectrum.

[0091] In some implementations of the ninth aspect, in conjunction with the ninth aspect, the first information includes position information of a coarse positioning of the first terminal device and / or an index of a first grid corresponding to the first terminal device.

[0092] The position information of the coarse positioning can be position coordinates, a relative position, a topological relationship, etc., which are not limited by the embodiments of the present application.

[0093] The correspondence between the coarse positioning result and the index of the large grid can be predefined.

[0094] In some implementations of the ninth aspect, in conjunction with the ninth aspect, the first information further includes a positioning accuracy error of the coarse positioning.

[0095] In some implementations of the ninth aspect, in conjunction with the ninth aspect, the first indication information includes at least one of base or map information corresponding to each of the at least one sub-grid, an index corresponding to each of the at least one sub-grid, and position information of each of the at least one sub-grid.

[0096] In some implementations of the ninth aspect, in conjunction with the ninth aspect, the access network device can store a channel map, and the first indication information can include an index of the first grid, and the access network device can determine information of a sub-grid of the first grid according to the index of the first grid.

[0097] In a ninth aspect, in some implementations of the ninth aspect, the second indication information includes at least one of: base or map information corresponding to each of the at least one sub-grid, an index corresponding to each of the at least one sub-grid, or position information of each of the at least one sub-grid.

[0098] In a ninth aspect, in some implementations of the ninth aspect, the second information includes an index or position information of a sub-grid corresponding to the first terminal device.

[0099] In a tenth aspect, a communication apparatus is provided. The apparatus can be configured to perform the method in any one of the first aspect to the fourth aspect.

[0100] In an implementation, the apparatus is a communication device (e.g., a terminal device, or a network device). When the apparatus is a communication device, the communication unit can be a transceiver, or an input / output interface; and the processing unit can be at least one processor. Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0101] In another implementation, the apparatus is a chip, chip system, or circuit for use in a communication device. When the apparatus is a chip, chip system, or circuit for use in a device, the communication unit can be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuitry, etc. on the chip, chip system, or circuit; and the processing unit can be at least one processor, processing circuit, or logic circuit, etc.

[0102] In an eleventh aspect, a communication apparatus is provided. The apparatus includes at least one processor configured to perform the method in any one of the first aspect to the fourth aspect.

[0103] Optionally, the apparatus further includes a memory configured to store a computer program or instructions; and the at least one processor is configured to execute the computer program or instructions stored in the memory.

[0104] In an implementation, the memory in the apparatus can be built-in or external.

[0105] In an implementation, the apparatus is a communication device (e.g., a terminal device, or a network device).

[0106] In another implementation, the apparatus is a chip, chip system, or circuit for use in a communication device.

[0107] In a twelfth aspect, a processor is provided for performing the method provided in any of the aspects above.

[0108] For the sending and obtaining / receiving operations involved by the processor, if no special description is provided, or if it does not conflict with the actual role or inherent logic in the related description, it can be understood as the processor output and input operations, or the sending and receiving operations performed by the radio frequency circuit and the antenna, and the present application does not limit this.

[0109] In a thirteenth aspect, a computer readable storage medium is provided, which stores program codes for execution by a device, and the program codes comprise codes for performing the method provided in any of the implementation manners of any of the first to fourth aspects above.

[0110] In a fourteenth aspect, a computer program product containing computer programs or instructions is provided, which, when running on a computer, causes the computer to perform the method provided in any of the implementation manners of any of the first to fourth aspects above.

[0111] In a fifteenth aspect, a chip system is provided, which comprises a processor for executing computer programs or instructions in a memory, so that a communication device installed with the chip system performs the method provided in any of the implementation manners of any of the first to fourth aspects above.

[0112] In an implementation manner, the memory can be built-in in the chip, or can be an external memory.

[0113] In a sixteenth aspect, a chip is provided, which comprises a processor and a communication interface, and the processor reads computer programs or instructions stored on a memory through the communication interface, and performs the method provided in any of the implementation manners of any of the first to fourth aspects above.

[0114] Optionally, as an implementation manner, the chip further comprises a memory, and the memory stores computer programs or instructions, and the processor is configured to execute the computer programs or instructions stored on the memory, and when the computer programs or instructions are executed, the processor is configured to perform the method provided in any of the implementation manners of any of the first to fourth aspects above. BRIEF DESCRIPTION OF DRAWINGS

[0115] FIG. 1 is a schematic diagram of an architecture 100 of a communication system suitable for embodiments of the present application.

[0116] FIG. 2 is a schematic diagram of a communication network element structure between a network device and a terminal device suitable for embodiments of the present application.

[0117] FIG. 3 is another schematic diagram of a wireless communication system suitable for embodiments of the application.

[0118] FIG. 4 is a schematic diagram of a wireless communication system 400 suitable for embodiments of the application.

[0119] FIG. 5 is a schematic diagram of a wireless communication system 500 suitable for embodiments of the application.

[0120] FIG. 6 is a schematic diagram of a positioning scenario 600 suitable for embodiments of the application.

[0121] FIG. 7 is a schematic diagram of another positioning scenario 700 suitable for embodiments of the application.

[0122] FIG. 8 is a schematic diagram of a communication method 800 provided by embodiments of the application.

[0123] FIG. 9 is a schematic diagram of a communication method 900 provided by embodiments of the application.

[0124] FIG. 10 is a schematic diagram of a communication method 1000 provided by embodiments of the application.

[0125] FIG. 11 is a schematic diagram of a communication apparatus 1100 suitable for embodiments of the application.

[0126] FIG. 12 is a schematic diagram of another communication apparatus 1200 provided by embodiments of the application.

[0127] FIG. 13 is a schematic diagram of a chip system 1300 provided by embodiments of the application. DETAILED DESCRIPTION

[0128] The technical solutions in the application will be described below with reference to the accompanying drawings.

[0129] The technical solutions provided in the present application can be applied to various communication systems, for example, a new radio (NR) system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, and the like. The technical solutions provided in the present application can also be applied to future communication systems. The technical solutions provided in the present application can also be applied to device to device (D2D) communication, vehicle-to-everything (V2X) communication, machine to machine (M2M) communication, machine type communication (MTC), and internet of things (IoT) communication systems. The technical solutions provided in the present application can also be applied to low-frequency scenarios, high-frequency scenarios, terahertz, and the like.

[0130] The technical solutions provided in the present application can also be applied to non-terrestrial network (NTN) systems such as inter-satellite communication and satellite communication. As an example, a satellite communication system includes a satellite base station and a terminal device. The satellite base station provides communication services for the terminal device. The satellite base station can also communicate with a base station. The satellite can act as a base station or a terminal device. The satellite can refer to a drone, a hot air balloon, a low-orbit satellite, a medium-orbit satellite, a high-orbit satellite, and the like. The satellite can also refer to a non-ground base station or a non-ground device, and the like.

[0131] A device in a communication system can send a signal to another device or receive a signal from another device. The signal can include information, signaling, or data, and the like. The device can be replaced by an entity, a network entity, a network element, a communication device, a communication module, a node, a communication node, and the like. The present disclosure describes the device as an example. For example, the communication system can include at least one terminal device and at least one network device. The network device can send a downlink signal to the terminal device, and / or the terminal device can send an uplink signal to the network device.

[0132] The terminal device in the embodiments of the present application can be a device or module with corresponding communication functions for accessing the above-mentioned communication system. The terminal device can include various devices with wireless communication functions, which can be used to connect people, things, machines, etc. The terminal device can be widely used in various scenarios, such as cellular communication, D2D, V2X, peer to peer, M2M, MTC, IoT, virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart traffic, smart city UAV, robot, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery, etc. The terminal device can be a terminal in any of the above scenarios, such as an MTC terminal, an IoT terminal, etc. The terminal device can be a user equipment (UE) of the 3rd generation partnership project (3GPP) standard, a terminal, a fixed device, a mobile station device or a mobile device, a subscriber unit, a handset, a vehicle-mounted device, a wearable device, a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a wireless data card, a personal digital assistant (PDA), a computer, a tablet computer, a notebook computer, a wireless modem, a handset, a laptop computer, a computer with wireless transceiver function, a smart book, a vehicle, a satellite, a global positioning system (GPS) device, a target tracking device, an aircraft (such as a drone, a helicopter, a multi-helicopter, a quad-helicopter, or an airplane, etc.), a ship, a remote control device, a smart home device, an industrial device, a transport vehicle with wireless communication function, a communication module, a road side unit (RSU) with terminal function, or a device built in the above-mentioned device (such as a communication module, a modem or a chip in the above-mentioned device, etc.), or other processing devices connected to the wireless modem. For the convenience of description, the terminal device will be described as an example of a terminal or UE hereinafter.

[0133] It should be understood that in certain scenarios, the UE can also be used to act as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in V2X, D2D, or end-to-end scenarios, etc.

[0134] In the embodiments of the present application, the device for realizing the function of the terminal device, i.e., the terminal device, can be a terminal device or a device capable of supporting the terminal device to realize the function, such as a chip system or a chip or a circuit or a communication module (i.e., a communication module performing a communication function), which can be installed in the terminal device. In the embodiments of the present application, the chip system can be composed of a chip or can include a chip and other discrete devices. In addition, a computer program or instructions for performing a corresponding communication function can also be configured in the device.

[0135] The network device in the embodiments of the present application can be a device or module with corresponding communication function. The network device can be a device for communicating with a terminal device, and the network device can also be referred to as an access network device or a radio access network device, for example, the network device can be a base station. The network device in the embodiments of the present application can refer to a radio access network (RAN) node (or device) for accessing a terminal device to a wireless network. The base station can broadly cover various names in the following or be replaced by the following names, such as: node B (NodeB), evolved node B (eNB), next generation node B (gNB), relay station, access point, transmitting and receiving point (transmitting and receiving point or transmit / receiving point, TRP), transmitting point, primary station, secondary station, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The base station can also refer to a communication module, modem or chip for being arranged in the foregoing device or apparatus. The base station can also be a mobile switching center and a device assuming a base station function in D2D, V2X, M2M communication, a device assuming a base station function in a future communication system, etc. The base station can support networks of the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form of the network device.

[0136] The base station can be fixed or mobile. For example, a helicopter or a drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, the helicopter or the drone can be configured to act as a device communicating with another base station.

[0137] In some deployments, the network device mentioned by embodiments of the application can be a device including a CU, or a DU, or a device including a CU and a DU, or a control plane CU node (central unit-control plane (CU-CP)) and a user plane CU node (central unit-user plane (CU-UP)) and a DU node. For example, the network device can include a gNB-CU-CP, a gNB-CU-UP and a gNB-DU.

[0138] In some deployments, a plurality of RAN nodes cooperate to assist a terminal to implement wireless access, and different RAN nodes respectively implement part of the functions of a base station. For example, the RAN node can be a CU, a DU, a CU-CP, a CU-UP, or a radio unit (RU) (or radio frequency unit), etc. The CU and the DU can be separately arranged, or can be included in the same network element, such as a BBU. The RU can be included in a radio frequency device or a radio frequency unit, such as an RRU, an AAU or an RRH.

[0139] In some deployments, the CU is a logical node that carries the radio resource control (RRC) layer, the service data adaptation protocol (SDAP) layer, the packet data convergence protocol (PDCP) layer and other control functions of the access network device. The CU is connected to network nodes such as core networks through some interfaces, which can be E2 interfaces, etc. Optionally, the CU has part of the functions of the core network. The CU (such as the PDCP layer and higher layers) is connected to the DU (such as the radio link control (RLC) layer and lower layers) through some interfaces, which can be F1 interfaces, etc. In some examples, these interfaces (such as the F1 interface) can provide control plane (C-Plane) and user plane (U-Plane) functions (such as interface management, system information management, UE context management, RRC message transmission, etc.). The F1 application protocol (F1AP) is an application protocol of the F1 interface, which defines the signaling procedures of the F1 in some examples. The F1 interface supports the control plane (F1 control plane, F1-C), the user plane (F1 user plane, F1-U).

[0140] In some deployments, a CU can be split into a CU-CP and a CU-UP. The CU-CP is a logical node that carries the control plane part of PDCP (PDCP-C) layer and RRC layer, and is used to implement the control plane function of the CU. The CU-CP can interact with a network element in the core network that is used to implement the control plane function. The network element in the core network that is used to implement the control plane function can be an access and mobility function network element. The CU-UP is a logical node that carries the user plane part of PDCP (PDCP-U) layer and SDAP layer, and is used to implement the user plane function of the CU. The CU-UP can interact with a network element in the core network that is used to implement the user plane function. The network element in the core network that is used to implement the user plane function. The above configurations of the CU and the DU are merely examples, and the CU and the DU can have other functions according to needs. For example, the CU or the DU can be configured to have more protocol layer functions, or the CU or the DU can be configured to have partial processing functions of the protocol layers. For example, partial functions of the RLC layer and functions of the protocol layers above the RLC layer are arranged in the CU, and the remaining functions of the RLC layer and functions of the protocol layers below the RLC layer are arranged in the DU. For another example, the functions of the CU or the DU can be divided according to service types or other system requirements. For example, functions that need to meet a relatively short delay requirement in processing time are arranged in the DU, and functions that do not need to meet the delay requirement are arranged in the CU.

[0141] In some deployments, a DU is a logical node that carries an RLC layer, a medium access control (MAC) layer, a higher physical layer (Higher PHY layer), and other functions. In some examples, a DU can control at least one RU. The DU is connected to the RU through some interfaces, which can be a front-haul interface. In some examples, the Higher PHY layer includes part of the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, and other processing functions.

[0142] In some deployments, a RU is a logical node that hosts lower physical layer (Lower PHY) and radio frequency (RF) processing. In some examples, a RU can be a TRP or a RRH or other similar functional entity. In some examples, a Low-PHY includes portions of PHY processing such as fast Fourier transform (FFT), inverse fast Fourier transformation (IFFT), digital beamforming and filtering, and other processing functions. A RU communicates with one or more UEs over a wireless link.

[0143] A DU and a RU can or can not be co-located. A DU and a RU exchange control plane information and user plane information over a fronthaul link via a lower-layer split-control, user and synchronization (LLS-CUS) interface. The LLS-CUS can include interfaces that provide control plane and user plane, respectively. In some examples, the control plane refers to real-time control between a DU and a RU. A DU and a RU have an interface of a fronthaul link (e.g., a lower layer split management plane (LLS-M) interface) to exchange management information, and the management plane (M-Plane) refers to non-real-time management operations between a DU and a RU.

[0144] A DU and a RU can cooperate to collectively implement the functionality of a PHY layer. A DU can be connected to one or more RUs. The functionality that a DU and a RU have can be configured in multiple ways according to design. For example, a DU is configured to implement baseband functionality and a RU is configured to implement mid- RF functionality. As another example, a DU is configured to implement high-layer functionality in a PHY layer and a RU is configured to implement low-layer functionality in the PHY layer or to implement the low-layer functionality and RF functionality. The high-layer functionality in a PHY layer can include a portion of functionality of the PHY layer that is closer to a MAC layer, and the low-layer functionality in a PHY layer can include another portion of functionality of the PHY layer that is closer to a mid-RF side.

[0145] In one possible design, a processing unit in a BBU that implements baseband functionality is referred to as a base band high (BBH) unit, and a processing unit in a RRU / AAU / RRH that implements baseband functionality is referred to as a base band low (BBL) unit.

[0146] In different systems, the CU (or CU-CP and CU-UP), DU or RU can also have different names, but those skilled in the art can understand their meanings. For example, the radio access network can also be an open radio access network (O-RAN) architecture, in which the CU can also be referred to as an open CU (O-CU), the DU can also be referred to as an open DU (O-DU), the CU-CP can also be referred to as an open CU-CP (O-CU-CP), the CU-UP can also be referred to as an open CU-UP (O-CU-UP), and the RU can also be referred to as an open RU (O-RU). Any of the CUs (or CU-CPs, CU-UPs), DUs and RUs in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0147] In the embodiments of the present application, the device for implementing the function of the network device can be a network device, or a device capable of supporting the network device to implement the function, such as a chip system or a chip or a circuit or a communication module (i.e., a communication module performing a communication function), which can be installed in the network device. In the embodiments of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices. In addition, the device can also be configured with a computer program or instructions for executing the corresponding communication function. In the embodiments of the present application, only the device for implementing the function of the network device is taken as an example for illustration, and the scheme of the embodiments of the present application is not limited.

[0148] The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; and can also be deployed on aircraft, balloons and satellites in the air. The embodiments of the present application do not limit the scenarios in which the network device and the terminal device are located. In addition, the terminal device and the network device can be hardware devices, or software functions running on special hardware, software functions running on general hardware, such as virtualized functions instantiated on a platform (e.g., a cloud platform), or entities including special or general hardware devices and software functions. The specific forms of the terminal device and the network device are not limited in the present application.

[0149] First, a communication system suitable for the embodiments of the present application is briefly introduced as follows.

[0150] Referring to FIG. 1, FIG. 1 is a schematic diagram of a wireless communication system suitable for the embodiments of the present application.

[0151] As shown in FIG. 1, the wireless communication system includes a radio access network 100. The radio access network 100 can be a next generation radio access network, or a legacy (e.g., 5G, 4G, 3G or 2G) radio access network. One or more terminal devices (120a-120j, collectively referred to as 120) can be connected to each other or one or more network devices (110a, 110b, collectively referred to as 110) in the radio access network 100. Network elements in the wireless communication system are connected through an interface (e.g., next generation interface (NG), Xn), or an air interface.

[0152] FIG. 1 is only a schematic diagram, and the wireless communication system can also include other devices, such as a core network (CN) device, a wireless relay device, and / or a wireless backhaul device, etc., which are not shown in FIG. 1.

[0153] FIG. 2 shows a schematic diagram of communication network elements between a network device and a terminal device in the present application. As shown in FIG. 2(a), the terminal device 10 includes a processor 101, a memory 102, and a transceiver 103 including a transmitter 1031, a receiver 1032, and an antenna 1033. As shown in FIG. 2(b), the network device 20 includes a processor 201, a memory 202, and a transceiver 203 including a transmitter 2031, a receiver 2032, and an antenna 2033. The receiver 1032 can be configured to receive transmission control information through the antenna 1033, and the transmitter 1031 can be configured to send transmission feedback information to the network device 20 through the antenna 1033. The transmitter 2031 can be configured to send transmission control information to the terminal device 10 through the antenna 2033, and the receiver 2032 can be configured to receive transmission feedback information sent by the terminal device 10 through the antenna 2033.

[0154] The communication network elements shown in FIG. 2 are applicable to the communication between the network device and the terminal device in the network system of FIG. 1.

[0155] Referring to FIG. 3, FIG. 3 is another schematic diagram of a wireless communication system applicable to the embodiments of the present application.

[0156] As shown in FIG. 3, the wireless communication system can include core network devices, access network devices (e.g., RANs), and terminal devices. The access network devices communicate with the core network devices through backhaul links and communicate with the terminal devices through air interfaces. For example, a BBU in an access network device communicates with a core network through a backhaul link, and a RU in the access network device communicates with a terminal device through an air interface. The BBU can communicate with the RU through a front-haul link, and the BBU and the RU can or can not be co-located. In some deployments, the BBU includes at least one CU and at least one DU, and the CU and the DU can communicate through a mid-haul link.

[0157] FIG. 3 is only a schematic diagram, and the wireless communication system can include other devices that are not shown in FIG. 3.

[0158] For example, in an open RAN (ORAN), a logical component service unit (SU) can also be included, which is responsible for providing specific services or functions.

[0159] The SU can be a software module, a hardware device, or a combination of both. The SU communicates and cooperates with other ORAN components to implement the overall wireless access network functions. For example, the SU can perform the following functions: protocol processing: processing wireless access related protocols, such as air interface protocols, MAC protocols, etc. Data processing: processing uplink and downlink data, including encoding, decoding, modulation, demodulation, etc. Resource management: managing wireless resources, such as spectrum, power, time slots, etc., to ensure efficient resource utilization. Security functions: providing security mechanisms, such as encryption, authentication, authorization, etc., to protect the security of wireless communication. Interface function: interfacing with other ORAN components or external networks to exchange data and work cooperatively.

[0160] It should be noted that the specific functions and definitions of the SU can vary depending on different ORAN implementations and application scenarios. For example, in the embodiments of the present application, the functions of the first network function can be implemented in the SU, i.e., the SU can store the content of the channel map and transmit it to the CU / DU when called.

[0161] FIG. 4 is a schematic diagram of a wireless communication system 400 suitable for use in embodiments of the present application. The communication system 400 includes terminal devices (denoted as UEs in FIG. 4), a radio access network (denoted as a next generation radio access network (NG-RAN) in FIG. 4), and a core network.

[0162] The radio access network includes one or more next generation evolved node Bs (ng-eNBs) and gNBs. The ng-eNB represents an LTE base station accessing a 5G core network, and the gNB represents a 5G base station accessing a 5G core network. The ng-eNB and the gNB communicate with each other, or two ng-eNBs, or two gNBs through an Xn interface. The Xn interface can also be referred to as an XnAP interface. The radio access network is connected to the core network through an NG control plane (NG-C) interface.

[0163] The core network includes an access and mobility management function (AMF) and a location management function (LMF) and other functions.

[0164] The LMF is responsible for supporting different types of location services related to the UE, including positioning of the UE and transmission of assistance data to the UE. The LMF can signal with the RAN, for example, an ng-eNB or a gNB, and the UE. For example, the LMF and the ng-eNB or the gNB exchange information through new radio positioning protocol annex (NRPPa) messages, such as obtaining configuration information of a position reference signal (PRS), a sounding reference signal (SRS), cell timing, cell location information, and the like. For another example, the LMF and the UE exchange UE capability information, assistance information, measurement information, and the like through LTE positioning protocol (LPP) messages.

[0165] The AMF entity can receive a location service request related to the UE from a location services (LCS) entity of a 5G core (5GC), or the AMF itself can initiate some location services on behalf of a specific UE, and forward the location service request to the LMF.

[0166] The terminal device is connected to the radio access network through an ng-eNB via an LTE user network LTE-Uu interface. The terminal device can also be connected to the radio access network through a gNB via an NR user network NR-Uu interface.

[0167] It should be understood that one or more base stations (including ng-eNB or gNB) can be included in the communication system 400. It should also be understood that one or more terminal devices can be included in the communication system 100, for example, including one or more terminal device groups (such as the UE set shown in FIG. 4). A gNB can send data or control signaling to one or more terminal devices. Multiple gNBs can also send data or control signaling to one terminal device at the same time.

[0168] Optionally, the ng-eNB and gNB in FIG. 4 can also be replaced by a TRP, a transmission point (TP), a reception point (RP), a cell, etc.

[0169] Referring to FIG. 5, as an example, FIG. 5 is a schematic diagram of a wireless communication system 500 suitable for use with embodiments of the application. As shown in FIG. 5, the wireless communication system 500 can include at least one terminal device, such as the UE 101 shown in FIG. 5. The wireless communication system 500 can also include multiple network devices (which can be base stations (BS) or TRPs, and hereinafter are referred to as base stations), where the multiple base stations include a base station of a serving cell of the terminal device 101 and base stations of one or more neighboring cells of the serving cell. The base station of the serving cell (which can also be referred to as a serving base station) is 102 shown in FIG. 5, and the base stations of the neighboring cells (which can also be referred to as neighboring base stations) are 103 and 104 shown in FIG. 5. Both the network devices and the terminal device can be configured with multiple antennas, and the network devices and the terminal device can communicate using multi-antenna technology.

[0170] Optionally, the base stations in FIG. 5 can be replaced by a TRP, a TP, a RP, a cell, etc.

[0171] In addition to the network devices and the terminal device, the wireless communication system 500 can also include an LMF network element 105. The LMF network element 105 can be used to implement the location estimation of the terminal device. The LMF network element 105 can be deployed inside the core network, that is, the LMF network element 105 also belongs to a kind of core network network element. The LMF network element 105 can communicate with the network device through an AMF network element (not shown in the figure). For ease of description, the LMF network element sends information to the network device through the AMF network element in the embodiments of the application is referred to as the LMF network element sends information to the network device. In other words, the LMF network element sends messages to the network device as referred to in the embodiments of the application can be understood as that the LMF network element first sends information to the AMF network element, and the AMF network element forwards the information to the network device. Optionally, if there is an interface between the LMF network element and the network device, the LMF network element can directly send information to the network device.

[0172] In some embodiments, part of the function of the LMF network element 105, such as a location management component (LMC), can be integrated in the network device. For example, the base station 102 of the serving cell and the base stations 103 and 104 of the two neighboring cells all integrate the LMC. The LMC of the LMF network element integrated in the network device sending information to the network device can also be considered as the LMF network element sending information to the network device.

[0173] It should be noted that the architecture of the communication system shown in FIG. 5 is only as an example, and other architectures can be used. For example, FIG. 5 shows the base station 102 of the serving cell and the base stations 103 and 104 of the two neighboring cells. Obviously, more base stations of neighboring cells can also be included in the communication system 500.

[0174] In the communication system 400 and the communication system 500, the LMF network element and the base station communicate through the NR positioning protocol (NRPPa) protocol. The LMF network element and the UE communicate through the LPP protocol. Among them, the LMF interacts with the base station through the NRPPa protocol to exchange cell information, such as the configuration information of the reference signal of the cell, the timing information of the cell, and the geographic location information of the cell. The LMF exchanges UE capability information, auxiliary information, measurement information, etc. with the UE through the LPP protocol.

[0175] Positioning assistance communication mainly involves using positioning technology to assist the communication process, thereby improving the efficiency and accuracy of communication. High-precision positioning is one of the important indicators in the communication system, and is applied in many scenarios of mobile communication, such as factories and intelligent robots.

[0176] The current positioning method mainly extracts the physical position information by measuring the channel and extracting the multipath information, and then assists communication according to the physical position information.

[0177] Referring to FIG. 6, as an example, FIG. 6 shows a schematic diagram of a positioning scenario 600 suitable for embodiments of the present application. The principle in the positioning scenario 600 is to obtain the geometric position relationship between the access network device and the terminal device by measuring the straight-line distance or angle between the multiple access network devices and the terminal device, and according to the known position information of the access network device, the position of the terminal device #1 can be calculated. As shown in FIG. 6, the angle of arrival of the access network device #1 and the terminal device is θ1, the angle of arrival of the access network device #2 and the terminal device is θ2, and based on θ1 and θ2 and the position information of the access network device #1 and the access network device #2, the position of the terminal device can be calculated.

[0178] It can be understood that in the positioning scenario 600, TDOA, multi-RTT, and other positioning methods can also be used to estimate the angle or time delay information of the terminal device relative to the access network device, so as to complete terminal positioning.

[0179] It can be understood that in the scenario shown in FIG. 6, the path of the signal from the sending end to the receiving end is a direct path, which can also be referred to as a line of sight (LOS) scenario. When the path of the signal from the sending end to the receiving end is affected by an obstacle, it is a non-direct path, which is referred to as a NLOS scenario.

[0180] Referring to FIG. 7, as an example, FIG. 7 shows a schematic diagram of another positioning scenario 700 applicable to the embodiments of the present application. In the positioning scenario 700, the signal is reflected to the receiving end through a scatterer, and the measured time of arrival (TOA) / AOA / AOD (angle of departure) and other information correspond to the reflection path. As shown in FIG. 7, when the signal is from UE#2 to access network device#3, the signal is reflected to access network device#1 through scatterer#1 and scatterer#2.

[0181] Using the information of the scatterer in the environment, the SRS / PRS measurement channel multi-path angle delay and other information can be obtained by using the forward ray tracing algorithm combined with the environment. As shown in FIG. 7, two rays are reflected through the scatterer and finally intersect at a point or overlap region, and the positioning position can be finally obtained.

[0182] The commonly used positioning method assisted communication needs to determine the accurate position or virtual position to realize the function of assisted communication. For example, in the above positioning method, the accurate physical position information is obtained based on the channel measurement and extraction of multi-path information, and then the physical position information is used to assist communication, resulting in a loss of information amount. For example, non-line of sight (NLOS) path energy, time delay, and the like.

[0183] In the environment perception and channel mapping (see the description below for details) and other communication applications, the grid-level channel library needs to be used to assist communication, and therefore the position of the UE or the matching fingerprint information virtual position needs to be known in real time for application. Because the existing positioning process causes a loss of information amount, it is difficult to match the accurate mapping information in the channel mapping, which affects the communication performance.

[0184] In order to facilitate better understanding of the technical solutions of the present application, some related technologies related to the technical solutions of the present application are introduced.

[0185] 1. Channel map: A channel map is a database that stores channel characteristics based on grid location information. Here, "grid" generally refers to a way of dividing space into small, discrete units (i.e., grids). Each grid is associated with a set of channel characteristics that describe the channel behavior at that grid location. For example, a physical cell can be divided into two-dimensional or three-dimensional grids, and each grid point stores several channel characteristics in the form of a matrix, vector, or scalar.

[0186] For example, "grid" in this application is a term used to describe the division of location or area, which can be replaced by similar terms such as range, mesh, etc., and the embodiments of the present application do not limit this.

[0187] 2. Channel characteristics: Channel characteristics include grid-associated scatterer information, channel statistical covariance matrix, angle spectrum, time delay spectrum, and path loss. Among them, the grid-associated scatterer information describes the type, location, size, and number of scatterers (such as buildings, mountains, trees, etc.) existing at the grid location. These scatterers will affect the propagation of wireless signals. The channel statistical covariance matrix describes the statistical properties of the channel impulse response. It contains the correlation information of the channel at different times, frequencies, or spatial locations. The angle spectrum describes the directional distribution of signal arrival or departure. In a multiple input multiple output (MIMO) system, the angle spectrum is very important for beamforming and interference management. The time delay spectrum describes the multipath time delay distribution experienced by the signal during propagation. It reflects the difference in propagation time of the signal on different paths. The path loss describes the power attenuation of the signal during propagation. It is affected by many factors, such as distance, frequency, scatterer, etc.

[0188] In map applications, accurate physical location coordinates or virtual location coordinates are not necessarily required to assist communication, and the correlation of channel reconstruction of a communication system can be used to achieve communication performance enhancement. Avoiding the loss of part of the information amount caused by the process of recovering physical location information from the channel extracted multipath information and then assisting communication according to the physical location information.

[0189] Therefore, the embodiments of the present application provide a communication method that can achieve high-precision positioning assisted communication.

[0190] Before introducing the scheme of the present application, the following points are explained.

[0191] (1) In this application, "indication" can include direct indication, indirect indication, explicit indication, and implicit indication. When describing that a certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0192] In the present application, the information indicated by the indication information is referred to as to-be-indicated information. In the specific implementation process, there are many ways to indicate the to-be-indicated information, for example, but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or the index of the to-be-indicated information. The to-be-indicated information can also be indirectly indicated by indicating other information, wherein the other information and the to-be-indicated information have an association relationship. The to-be-indicated information can also be only indicated in part, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of a specific information can also be achieved by means of the arrangement order of each information agreed in advance (for example, the protocol stipulates), thereby reducing the indication overhead to a certain extent. In addition, the to-be-indicated information can be sent as a whole, or can be sent separately into multiple sub-information, and the sending period and / or sending opportunity of these sub-information can be the same or different.

[0193] (2) In the present application, "sending" and "receiving" represent the direction of signal transmission. For example, "sending information to XX" can be understood as that the destination of the information is XX, which can include direct sending through the air interface, or indirect sending through the air interface by other units or modules. "Receiving information from YY" can be understood as that the source of the information is YY, which can include direct receiving from YY through the air interface, or indirect receiving from YY through the air interface from other units or modules. "Sending" can also be understood as "output" of the chip interface, and "receiving" can also be understood as "input" of the chip interface. In other words, sending and receiving can be carried out between devices, for example, between network devices and terminal devices, or can be carried out within a device, for example, between components, modules, chips, software modules or hardware modules within a device through a bus, wire or interface.

[0194] (3) In various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be mutually referenced if there is no special description and logical conflict. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0195] (4) In the present application, "first", "second", and "#1", "#2", and "#n1", "#n2" and the like are only for convenience of description and are used for distinguishing objects, and are not used to limit the scope of the embodiments of the present application. They are not used to describe the order or sequence of the characteristics. It should be understood that the objects thus described can be interchanged under appropriate circumstances, so as to be able to describe schemes other than the embodiments of the present application.

[0196] (5) In the present application, "predefined" can mean standard protocol predefined, or can also mean pre-agreed or pre-negotiated between devices.

[0197] (6) In this application, the words "exemplary", "for example", etc. are used to mean example, illustration, or instance. Any embodiment or design scheme described in this application as "exemplary" should not be construed as preferred or advantageous over other embodiments or design schemes. Rather, the word "exemplary" is used to present concepts in a concrete manner. In the embodiments of this application, "of", "corresponding" and "corresponding" are sometimes mixed. It should be pointed out that when their differences are not emphasized, their meanings are consistent.

[0198] The method provided by the embodiments of this application will be described in detail below with reference to the drawings. The embodiments provided by this application can be applied to the communication system shown in FIG. 1 and the communication system shown in FIG. 2, without limitation.

[0199] In the following embodiments, the first network function and the communication device are exemplarily illustrated. The first network function can be replaced by a component (such as a chip or a chip system or a circuit) of the first network function, the communication device can be replaced by a component (such as a chip or a chip system or a circuit) of the communication device, and the communication device can be a first terminal device or an access network device.

[0200] Referring to FIG. 8, as an example, FIG. 8 is a schematic diagram of a communication method 800 provided by an embodiment of this application. The method 800 shown in FIG. 8 can include the following steps.

[0201] 810, the first network function receives first information.

[0202] The first network function can be a channel map management function, and the first network function stores or saves a channel map, that is, the first network function stores channel characteristics based on grid position information, for example, the first network function stores channel characteristics of x grids, and each grid includes y sub-grids.

[0203] The grid can be understood as a large grid relative to the sub-grid, and similarly, the sub-grid can be understood as a small grid relative to the grid. The channel characteristics of the grid can be understood as the channel characteristics of multiple sub-grids, and the channel characteristics of one sub-grid can correspond to one terminal device or multiple terminal devices. The channel characteristics of one terminal device can be the channel characteristics of one sub-grid or the channel characteristics of multiple sub-grids.

[0204] Exemplarily, the first network function is a virtual network function entity, for example, a map management function (MMF).

[0205] It should be noted that the MMF is only an exemplary description, and the first network function can also be replaced by similar terms such as a channel map management function (CMMF), and the embodiments of the present application do not limit this.

[0206] In the present application, the first network function can be deployed on the CU / DU side, or on the service unit (SU) side, and then connected to the CU / DU. For details, reference can be made to the description in FIG. 3 above, which is not repeated here.

[0207] In the embodiments of the present application, the first information is used to indicate the information of the first grid, or in other words, the first information can include the information of the first grid, and the information of the first grid includes a channel feature set of at least one terminal device. Among them, the first terminal device belongs to the at least one terminal device.

[0208] Among them, the first grid can be understood as the above-mentioned large grid. That is, the first grid includes at least one sub-grid.

[0209] In other words, the first information is used to indicate the information of a large grid, and the information of the large grid can include the channel features of the first terminal device and other terminal devices, or can only include the channel features of the first terminal device. The channel features of one or more sub-grids in the large grid are the channel features of the first terminal device. For example, the large grid includes sub-grid #1, sub-grid #2, sub-grid #3, the channel features of sub-grid #1 are the channel features of terminal device #1, the channel features of sub-grid #2 are the channel features of terminal device #2, and the channel features of sub-grid #3 are the channel features of terminal device #3.

[0210] Among them, the first information can include the position information of the coarse positioning of the first terminal device.

[0211] It should be understood that the first information can also be an indication information.

[0212] Exemplarily, the first information can include the position information of the coarse positioning of the first terminal device and / or the index of the first grid. Among them, the correspondence between the coarse positioning result and the index of the large grid can be predefined.

[0213] Among them, the position information of the coarse positioning can be a position coordinate, or a relative position, a topological relationship, etc., and the embodiments of the present application do not limit this.

[0214] Optionally, the first information can also include the positioning accuracy error of the coarse positioning.

[0215] As an example, the coarsely positioned location information of the first terminal device can be obtained by SRS measurement, or by GPS positioning, Bluetooth positioning, AOA / TDOA positioning, fingerprint positioning, etc., and the embodiments of the present application do not make any limitation in this regard.

[0216] In a possible implementation, the first network function receives the first information from the first positioning function.

[0217] As an example, the first positioning function is an LMF. Specifically, the LMF can calculate the coarsely positioned location information of the first terminal device by SRS measurement, and the LMF sends the coarsely positioned location information of the first terminal device to the first network function. Correspondingly, the first network function receives the coarsely positioned location information of the first terminal device from the LMF.

[0218] The first network function can determine the information of the first grid based on the first information.

[0219] As an example, the first network function can directly match the range of the first grid according to the coarsely positioned location information, so as to determine the information of the first grid.

[0220] As an example, the first network function can directly determine the information of the first grid according to the index of the first grid.

[0221] In the embodiments of the present application, the channel feature set is used to assist communication.

[0222] As an example, the channel feature set includes at least one of the information of multipath between at least one terminal device and the access network device, channel statistical covariance matrix, angle spectrum, and delay spectrum.

[0223] As an example, the channel feature can be used for performance analysis and optimization of the wireless communication system. By giving the channel feature at a certain location, the performance indicators such as coverage, capacity, and reliability of the system can be predicted.

[0224] As an example, by using the information such as angle spectrum and delay spectrum in the channel feature, more accurate beam pointing and interference suppression can be achieved.

[0225] As an example, the channel feature can also be used for channel modeling and simulation. By collecting and analyzing the channel data in the actual environment, a more accurate channel model can be established to provide support for the design and testing of the wireless communication system.

[0226] The above is only an exemplary description of the channel feature used to assist communication, and does not cause any limitation to the embodiments of the present application.

[0227] 820, the first network function sends first indication information according to the information of the first grid to the access network device. Correspondingly, the access network device receives the first indication information from the first network function.

[0228] The first indication information is used to indicate the information of the at least one sub-grid, or in other words, the first indication information can be third information, which includes the information of the at least one sub-grid, each of which belongs to the first grid.

[0229] In a possible implementation, the first network function determines the information of the at least one sub-grid according to the information of the first grid, and then sends the first indication information to the access network device.

[0230] It can be understood that the first network function can determine the sub-grids under the first grid, and send the information of the sub-grids under the first grid to the access network device through the first indication information.

[0231] For example, the first indication information can include at least one of the base or atlas information corresponding to each of the at least one sub-grid, the index corresponding to each of the at least one sub-grid, and the position information of each of the at least one sub-grid.

[0232] It can be understood that the information of the at least one sub-grid can be used to determine the channel characteristics of the first terminal device. The following two ways can be taken as examples:

[0233] In the first way, the first terminal device determines the information of the sub-grid corresponding to the first terminal device according to the information of the at least one sub-grid.

[0234] The first way can include the following steps 821a-821c.

[0235] 821a, the access network device sends second indication information to the first terminal device according to the first indication information, the second indication information being used to indicate the information of the at least one sub-grid, or in other words, the second indication information can be fourth information, which includes the information of the at least one sub-grid. Correspondingly, the first terminal device receives the second indication information from the access network device.

[0236] It can be understood that the access network device receives the information of the at least one sub-grid from the first network function, and can indicate the information of the at least one sub-grid to the first terminal device, which is used for the first terminal device to determine the corresponding sub-grid.

[0237] For example, the second indication information can include at least one of the base or atlas information corresponding to each of the at least one sub-grid, the index corresponding to each of the at least one sub-grid, and the position information of each of the at least one sub-grid.

[0238] 821b, the access network device sends the first reference signal to the first terminal device. Correspondingly, the first terminal device receives the first reference signal from the access network device.

[0239] Exemplarily, the first reference signal is a channel state information-reference signal (CSI-RS).

[0240] 821c, the first terminal device determines the information of the sub-grid corresponding to the first terminal device based on the first reference signal and the information of the at least one sub-grid.

[0241] The information of the sub-grid corresponding to the first terminal device includes a channel feature set of the first terminal device, and the sub-grid corresponding to the first terminal device belongs to the at least one sub-grid.

[0242] It can be understood that the first terminal device can match based on the measurement result of the first reference signal and the information of each sub-grid, so as to determine the sub-grid with the highest matching degree, that is, the sub-grid corresponding to the first terminal device.

[0243] In the present application, the execution order of the above steps 821a and 821b is not limited, and 821b can be executed first, and then 821a is executed.

[0244] In mode two, the access network device determines the information of the sub-grid corresponding to the first terminal device according to the information of the at least one sub-grid.

[0245] Mode two can include the following steps 822a-822c.

[0246] 822a, the first terminal device sends a second reference signal to the access network device. Correspondingly, the access network device receives the second reference signal from the first terminal device.

[0247] Exemplarily, the second reference signal is an SRS.

[0248] 822b, the access network device determines the information of the sub-grid corresponding to the first terminal device based on the second reference signal and the information of the at least one sub-grid.

[0249] The information of the sub-grid corresponding to the first terminal device includes a channel feature set of the first terminal device, and the sub-grid corresponding to the first terminal device belongs to the at least one sub-grid.

[0250] It can be understood that the access network device can match based on the measurement result of the second reference signal and the information of each sub-grid, so as to determine the sub-grid with the highest matching degree, that is, the sub-grid corresponding to the first terminal device.

[0251] 830, the first network function receives the second information, the second information being used to indicate the information of the sub-grid corresponding to the first terminal device.

[0252] It can be understood that the second information can include the information of the sub-grid corresponding to the first terminal device.

[0253] The information of the sub-grid corresponding to the first terminal device is determined by the first terminal device or the access network device based on the information of the at least one sub-grid.

[0254] In a possible implementation, the first terminal device determines the information of the sub-grid corresponding to the first terminal device (steps 821a-821c described above), and the first terminal device sends the second information to the first network function. Correspondingly, the first network function receives the second information from the first terminal device.

[0255] In another possible implementation, the access network device determines the information of the sub-grid corresponding to the first terminal device (steps 822a-822b described above), and the access network device sends the second information to the first network function. Correspondingly, the first network function receives the second information from the access network device.

[0256] The information of the sub-grid corresponding to the terminal device includes a channel feature set of the first terminal device.

[0257] For example, the second information can include an index or location information of the sub-grid corresponding to the first terminal device.

[0258] It should be understood that the second information can also be an indication information.

[0259] Optionally, the method 800 can further include step 840.

[0260] 840, the first network function determines a channel feature set of the first terminal device according to the second information.

[0261] Specifically, the first network function determines the information of the sub-grid corresponding to the first terminal device according to the second information, and determines the channel feature set according to the information of the sub-grid corresponding to the first terminal device.

[0262] Optionally, the first network function can further distribute the determined channel feature set of the first terminal device to assist subsequent communication performance improvement.

[0263] Based on the above technical solutions, the large grid information of the map is obtained through coarse positioning, and the small grid map information in the large grid is indicated, then the access network device or the terminal device matches the relevant small grid map, and finally the accurate small grid position is obtained, so as to realize the map assisted communication improvement.

[0264] In the following embodiments, the terminal device is taken as an example for small grid matching.

[0265] Referring to FIG. 9, as an example, FIG. 9 shows a schematic diagram of a communication method 900 provided by the embodiments of the present application. The method 900 shown in FIG. 9 can include the following steps.

[0266] 901, configuration information interaction.

[0267] The configuration information includes configuration information #1 or configuration information #2.

[0268] The LMF and the access network device #1 interact with the configuration information #1.

[0269] For example, the configuration information includes reference signal configuration, positioning report period, etc.

[0270] Optionally, the access network device #1 and the LMF can also interact with the location information of the access network device #1, etc., for the LMF to perform location settlement.

[0271] For example, the access network device #1 and the LMF interact with the TRP information through the TRP Configuration Information Exchange message, wherein the TRP information includes the location information of the access network device #1, etc.

[0272] The LMF and the MME interact with the configuration information #2.

[0273] For example, the configuration information #2 includes coarse positioning result report period, positioning measurement error information, grid index and location matching relationship, etc.

[0274] 902, capability information interaction.

[0275] The access network device #1 and the UE #1 interact with the capability information and send the assistance information.

[0276] For example, the assistance information can include SRS measurement capability, SRS assistance information, and CSI-RS measurement information, etc.

[0277] 910, the LMF sends a positioning request message to the UE #1.

[0278] For example, the positioning request message is an LPP request location information message.

[0279] The following are the steps of coarse positioning, taking SRS measurement as an example in this embodiment. The coarse positioning method can also be GPS positioning, and the present embodiment does not limit this. Next, the process of coarse positioning by SRS measurement is introduced, including steps 920-950.

[0280] 920, UE#1 sends SRS to access network device#1.

[0281] 930, access network device#1 performs SRS measurement.

[0282] In a possible implementation, access network device#1 measures SRS information and obtains the angle, time delay information and the like of UE#1 relative to access network device#1.

[0283] 940, access network device#1 sends a measurement report to LMF.

[0284] For example, the measurement report includes the angle, time delay information and the like of UE#1 relative to access network device#1.

[0285] 950, LMF determines a coarse positioning result.

[0286] The LMF calculates the coarse positioning result based on the measurement report.

[0287] 960, LMF sends information#1 to MMF.

[0288] The information#1 is used to indicate the information of the first grid to the MMF, or in other words, the information#1 includes the information of the first grid.

[0289] The information of the first grid includes a channel feature set of at least one terminal device, wherein the at least one terminal device includes UE#1.

[0290] For example, the information#1 can include the position coordinates of the coarse positioning of UE#1 and / or the index or ID of the corresponding first grid.

[0291] Optionally, the information#1 can also include the positioning accuracy error of the coarse positioning.

[0292] In a possible implementation, the MMF determines the index of the first grid according to the matching relationship between the position information of the coarse positioning (for example, the position coordinates of the coarse positioning) and the large grid.

[0293] In a possible implementation, the LMF determines the index or ID of the first grid based on the predefined matching relationship between the position information of the coarse positioning and the index of the large grid, and the MMF can determine the first grid according to the index of the first grid in the information#1.

[0294] For example, the information#1 can be an indication information.

[0295] 970, the MMF sends indication information #1 to the access network device #1.

[0296] Correspondingly, the access network device #1 receives the indication information #1.

[0297] It should be understood that after the MMF determines the first grid according to the information #1, the MMF can determine the information of the sub-grids in the first grid according to the saved channel map, and send the information of the sub-grids in the first grid to the access network device #1 through the indication information #1.

[0298] The indication information #1 is used to indicate the information of at least one sub-grid to the access network device #1, or in other words, the indication information #1 includes the information of at least one sub-grid.

[0299] For example, the indication information #1 includes at least one of the base or map information corresponding to each of the at least one sub-grid, the index corresponding to each of the at least one sub-grid, and the position information of each of the at least one sub-grid.

[0300] In a possible implementation, the access network device #1 can store the channel map, and therefore the indication information #1 can include the index of the first grid, and the access network device #1 can determine the information of the sub-grids of the first grid according to the index of the first grid.

[0301] For example, the indication information #1 can also be the information #3.

[0302] 980, the access network device #1 sends indication information #2 to the UE #1.

[0303] Correspondingly, the UE #1 receives the indication information #2.

[0304] The indication information #2 is used to indicate the information of the sub-grids of the first grid to the UE #1, or in other words, the indication information #2 includes the information of at least one sub-grid.

[0305] For example, the indication information #2 includes at least one of the base or map information corresponding to each of the at least one sub-grid, the index corresponding to each of the at least one sub-grid, and the position information of each of the at least one sub-grid.

[0306] For example, the indication information #2 can also be the information #4.

[0307] 990, the access network device #1 sends a CSI-RS to the UE #1.

[0308] Correspondingly, the UE #1 receives the CSI-RS.

[0309] 991, UE#1 determines the information of the sub-grid corresponding to UE#1 according to the indication information#2 and the measurement of the CSI-RS.

[0310] The information of the sub-grid corresponding to UE#1 includes the channel feature set of UE#1.

[0311] The UE#1 can match according to the measurement result of the CSI-RS and the information of each sub-grid, so as to determine the sub-grid with the highest correlation or accuracy, i.e., the sub-grid corresponding to the UE#1.

[0312] 992, UE#1 sends the information#2 to the MMF.

[0313] Correspondingly, the MMF receives the information#2.

[0314] The information#2 is used to indicate the information of the sub-grid corresponding to UE#1, or in other words, the information#2 includes the information of the sub-grid corresponding to UE#1.

[0315] Exemplarily, the information#2 includes the index or position information of the sub-grid corresponding to UE#1.

[0316] Exemplarily, the information#2 can be an indication information.

[0317] 993, the MMF determines the channel feature set of UE#1 according to the information#2.

[0318] The MMF determines the index or position information of the sub-grid corresponding to UE#1 according to the information#2, so as to determine the channel feature set corresponding to the sub-grid.

[0319] Optionally, the MMF can also distribute the channel feature set of UE#1 to the access network device#1 to assist subsequent communication.

[0320] Based on the above technical solution, the map large grid information is obtained through coarse positioning, the MMF can indicate the small grid map information in the large grid to the access network device, and then the access network device indicates the small grid map information to the UE, the UE performs small grid map matching, and finally obtains the accurate small grid position, so as to assist communication.

[0321] In the following embodiment, the access network device performs small grid matching as an example.

[0322] Referring to FIG. 10, as an example, FIG. 10 shows a schematic diagram of a communication method 1000 provided by the embodiment of the present application. The method 1000 shown in FIG. 10 can include the following steps.

[0323] The following steps 1001-1070 are similar to steps 901-970 in method 900, and the specific method can be referred to steps 901-970, which will not be described here.

[0324] 1001, configuration information interaction.

[0325] 1002, capability information interaction.

[0326] 1010, the LMF sends a positioning request message to the UE#1.

[0327] 1020, the UE#1 sends an SRS to the access network device#1.

[0328] 1030, the access network device#1 performs SRS measurement.

[0329] 1040, the access network device#1 sends a measurement report to the LMF.

[0330] 1050, the LMF determines a coarse positioning result.

[0331] 1060, the LMF sends information#1 to the MMF.

[0332] 1070, the MMF sends indication information#1 to the access network device#1.

[0333] 1080, the UE#1 sends an SRS to the access network device#1.

[0334] Correspondingly, the access network device#1 receives the SRS.

[0335] 1090, the access network device#1 determines the information of the sub-grid corresponding to the UE#1 according to the indication information#1 and the SRS measurement.

[0336] The information of the sub-grid corresponding to the UE#1 includes a channel feature set of the UE#1.

[0337] The access network device#1 can match the measurement result of the SRS and the information of each sub-grid to determine the sub-grid with the highest correlation or accuracy, which is the sub-grid corresponding to the UE#1.

[0338] 1091, the access network device#1 sends information#2 to the MMF.

[0339] 1092, the MMF determines the channel feature set of the UE#1 according to the information#2.

[0340] The steps 1091-1092 are similar to the steps 992-993 in the method 900, and the specific method can be referred to the steps 992-993, which will not be described here.

[0341] Based on the above technical solution, the coarse positioning obtains the large grid information of the map, the MMF can indicate the small grid map information in the large grid to the access network device, and then the access network device performs small grid map matching to finally obtain the accurate small grid position, thereby assisting communication.

[0342] It can be understood that in some of the above embodiments, pre-agreement and predefinition are mentioned several times, and those skilled in the art should understand their meanings. Predefinition means standard protocol predefinition. Pre-agreement means pre-agreement or pre-negotiation between devices. For example, the configuration information (for example, the first configuration information) is pre-agreed, which means that the content of the first configuration information is pre-agreed between devices (for example, between the access network device and the terminal device).

[0343] It can also be understood that some optional features of some embodiments of the present application can not depend on other features in some scenarios, or can be combined with other features in some scenarios, without limitation.

[0344] It can also be understood that the solutions in the embodiments of the present application can be reasonably combined, and the explanation or description of each term appearing in the embodiments can be mutually referenced or explained in each embodiment, without limitation.

[0345] It can also be understood that the methods and operations implemented by the terminal device in each of the above method embodiments can also be implemented by the constituent components (such as chips or circuits) of the terminal device, and in addition, the methods and operations implemented by the network device can also be implemented by the constituent components (such as chips or circuits) of the network device, without limitation.

[0346] The above describes the method provided by the embodiments of the present application in detail in combination with FIGS. 8 to 10. The following describes the apparatus provided by the embodiments of the present application in combination with FIGS. 11 to 13. It should be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments, and therefore, the content not described in detail can be referred to the method embodiments described above, which will not be described here for brevity.

[0347] Referring to FIG. 11, FIG. 11 is a schematic diagram of a communication apparatus 1100 provided by an embodiment of the present application. The apparatus 1100 includes a transceiver unit 1110. The transceiver unit 1110 can be used to implement the corresponding communication function. The transceiver unit 1110 can also be referred to as a communication interface or a communication unit. The apparatus 1100 further includes a processing unit 1120. The processing unit 1120 can be used for processing, such as beam measurement. The processing unit 1120 can be used for processing, such as beam measurement. The functions of the processing unit 1120 can be implemented by one or more processors. Specifically, the processor can include a modem chip, or a system on chip SoC chip or a SIP chip containing a modem core.

[0348] Optionally, the apparatus 1100 further includes a storage unit, which can be used to store computer programs or instructions and / or data, and the processing unit 1120 can read the computer programs or instructions and / or data in the storage unit to enable the apparatus to implement the foregoing method embodiments.

[0349] Optionally, the transceiver unit 1110 can include a receiving unit and a sending unit. The receiving unit can be configured to perform operations related to receiving (e.g., operations of receiving data or messages), and the sending unit can be configured to perform operations related to sending (e.g., operations of sending data or messages).

[0350] The communication apparatus 1100 can be a terminal-side apparatus in the above-described embodiments, for example, a terminal or a communication module in a terminal, or a circuit or chip responsible for communication functions in a terminal.

[0351] In a first possible design, the apparatus 1100 can be a first network function in the above-described embodiments, and the apparatus 1100 can implement steps or procedures corresponding to steps or procedures performed by the first network function in the above-described method embodiments. The transceiver unit 1110 can be configured to perform operations related to transceiving (e.g., operations of sending and / or receiving data or messages) of the first network function in the above-described method embodiments, such as steps 810 and 830 in the embodiment of FIG. 8. The processing unit 1120 can be configured to perform operations related to processing of the first network function in the above-described method embodiments, or operations other than transceiving (e.g., operations other than sending and / or receiving data or messages), such as steps 820 and 840 in the embodiment of FIG. 8.

[0352] In a possible implementation, the transceiver unit 1110 is configured to receive first information, where the first information is used to indicate first grid information, and the first grid information includes a channel feature set of at least one terminal device, where the channel feature set is used to assist communication, and the at least one terminal device includes a first terminal device. The processing unit 1120 is configured to send first indication information to an access network device according to the first grid information, where the first indication information is used to indicate information of at least one sub-grid, and each of the at least one sub-grid belongs to the first grid. The transceiver unit 1110 is further configured to receive second information, where the second information is used to indicate information of a sub-grid corresponding to the first terminal device, and the information of the sub-grid corresponding to the first terminal device includes a channel feature set of the first terminal device, and the information of the sub-grid corresponding to the first terminal device is determined by the first terminal device or the access network device based on the information of the at least one sub-grid, and the sub-grid corresponding to the first terminal device belongs to the at least one sub-grid.

[0353] A second possible design, the apparatus 1100 can be a terminal device in the foregoing embodiments, and the apparatus 1100 can implement steps or procedures corresponding to steps or procedures performed by a terminal device in the foregoing method embodiments. The transceiver unit 1110 can be configured to perform operations related to transceiving (e.g., operations of transmitting and / or receiving data or messages) of a terminal device in the foregoing method embodiments, such as the transceiver unit 1110 can be configured to perform steps 821a, 821b and 830 in the embodiment shown in FIG. 8. The processing unit 1120 can be configured to perform operations related to processing of a terminal device in the foregoing method embodiments, or operations other than transceiving (e.g., operations other than transmitting and / or receiving data or messages), such as the processing unit 1120 can be configured to perform step 821c in the embodiment shown in FIG. 8.

[0354] A possible implementation, the transceiver unit 1110 is configured to receive second indication information and first reference signals, the second indication information is used to indicate information of at least one sub-grid, each sub-grid in the at least one sub-grid belongs to a first grid, the information of the first grid includes a channel feature set of at least one terminal device, the channel feature set is used to assist communication, and the at least one terminal device includes a first terminal device; the processing unit 1120 is configured to determine information of a sub-grid corresponding to the first terminal device according to the second indication information and the first reference signals, the information of the sub-grid corresponding to the first terminal device includes a channel feature set of the first terminal device, and the sub-grid corresponding to the first terminal device belongs to the at least one sub-grid.

[0355] A third possible design, the apparatus 1100 can be an access network device in the foregoing embodiments, and the apparatus 1100 can implement steps or procedures corresponding to steps or procedures performed by an access network device in the foregoing method embodiments. The transceiver unit 1110 can be configured to perform operations related to transceiving (e.g., operations of transmitting and / or receiving data or messages) of an access network device in the foregoing method embodiments, such as the transceiver unit 1110 can be configured to perform steps 821a, 821b and 820 in the embodiment shown in FIG. 8. The processing unit 1120 can be configured to perform operations related to processing of a terminal device in the foregoing method embodiments, or operations other than transceiving (e.g., operations other than transmitting and / or receiving data or messages).

[0356] In a possible implementation, the transceiver 1110 is configured to receive first indication information from a first network function, where the first indication information is used to indicate information of at least one sub-grid, and each of the at least one sub-grid belongs to a first grid, and information of the first grid includes a channel feature set corresponding to at least one terminal device, and the channel feature set is used to assist communication, and the at least one terminal device includes a first terminal device; the processing unit 1120 is configured to send second indication information to the first terminal device according to the first indication information, where the second indication information is used to indicate information of the at least one sub-grid; and the transceiver 1110 is further configured to send a first reference signal to the first terminal device, where the first reference signal and the second indication information are used to determine information of a sub-grid corresponding to the first terminal device, and the information of the sub-grid corresponding to the first terminal device indicates the channel feature set of the first terminal device.

[0357] In a fourth possible design, the apparatus 1100 can be an access network device in the foregoing embodiments, and the apparatus 1100 can implement steps or procedures corresponding to those performed by the access network device in the foregoing method embodiments. For example, the transceiver 1110 can be configured to perform operations related to transmission and / or reception (e.g., operations of sending and / or receiving data or messages) of the access network device in the foregoing method embodiments, such as the steps 820, 822a, and 830 in the embodiment of FIG. 8. The processing unit 1120 can be configured to perform operations related to processing of the terminal device in the foregoing method embodiments, or operations other than transmission and / or reception (e.g., operations other than sending and / or receiving data or messages), such as the step 822b in the embodiment of FIG. 8.

[0358] In a possible implementation, the transceiver 1110 is configured to receive first indication information from a first network function, where the first indication information is used to indicate information of at least one sub-grid to the access network device, and each of the at least one sub-grid belongs to a first grid, and information of the first grid includes a channel feature set corresponding to at least one terminal device, and the channel feature set is used to assist communication, and the at least one terminal device includes a first terminal device; the transceiver 1110 is further configured to receive a second reference signal from the first terminal device; and the processing unit 1120 is configured to determine information of a sub-grid corresponding to the first terminal device according to the first indication information and the second reference signal, where the information of the sub-grid corresponding to the first terminal device indicates a channel feature set of the first terminal device, and the sub-grid corresponding to the first terminal device belongs to the at least one sub-grid.

[0359] It should be understood that the specific process in which each unit performs the corresponding steps described above has been described in detail in the foregoing method embodiments, and thus is not described herein again for the sake of brevity.

[0360] In a possible design, the processing unit 1120 can be implemented by one or more processors when the communication apparatus 1100 is a terminal or a communication module in a terminal. Specifically, the processor(s) can include a Modem chip, or a System on Chip (SoC) chip or a SIP chip including a Modem core.

[0361] In a possible design, the processing unit 1120 can be implemented by circuitry including one or more processors or processor cores in a chip when the communication apparatus 1100 is a circuit or chip responsible for communication functions in a terminal, such as a Modem chip or a System on Chip (SoC) chip or a SIP chip including a Modem core.

[0362] It should also be understood that the apparatus 1100 is embodied in the form of a functional unit. The term “unit” herein can refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (for example, a shared processor, a dedicated processor, or a group processor, etc.) and a memory for executing one or more software or firmware programs, a combination of logical circuit and / or other suitable components for supporting the described functions. In an alternative example, those skilled in the art can understand that the apparatus 1100 can be embodied as a communication apparatus in the above-described embodiments, and can be used to execute the processes and / or steps corresponding to the communication apparatus in each of the above-described method embodiments. To avoid repetition, details are not described herein.

[0363] The apparatus 1100 of each of the above-described solutions has a function of implementing the corresponding steps performed by the communication apparatus in the above-described methods. The function can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions; for example, the transceiver unit can be replaced by a transceiver (for example, the transmitting unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor, which respectively performs the transceiving operations and related processing operations in each of the method embodiments.

[0364] In addition, the transceiver unit 1110 can also be a transceiver circuit (for example, which can include a receiving circuit and a transmitting circuit), and the processing unit can be a processing circuit.

[0365] It should be noted that the apparatus in FIG. 11 can be a communication device in the foregoing embodiments, or can be a chip or a chip system, for example, a system on chip (SoC). The transceiver unit can be an input / output circuit, a communication interface; the processing unit can be a processor or a microprocessor integrated on the chip or an integrated circuit. This is not limited herein.

[0366] Referring to FIG. 12, FIG. 12 is a schematic diagram of another communication apparatus 1200 provided by an embodiment of the present application. The apparatus 1200 includes a processor 1210, and the processor 1210 is coupled with a memory 1220. The memory 1220 is configured to store computer programs or instructions and / or data. The processor 1210 is configured to execute the computer programs or instructions stored in the memory 1220, or read the data stored in the memory 1220, to perform the methods in the foregoing method embodiments.

[0367] Optionally, the processor 1210 is one or more.

[0368] Optionally, the memory 1220 is one or more.

[0369] Optionally, the memory 1220 is integrated with the processor 1210, or is separately arranged.

[0370] Optionally, as shown in FIG. 12, the apparatus 1200 further includes a transceiver 1230 configured to receive and / or send signals. For example, the processor 1210 is configured to control the transceiver 1230 to receive and / or send signals.

[0371] For example, the transceiver 1230 includes a transmitter and a receiver. The transmitter is configured to send signals, and the receiver is configured to receive signals.

[0372] For example, the transmitted signal can be understood as an output signal, and the received signal can be understood as an input signal.

[0373] For example, the processor 1210 can have the functions of the processing unit 1120 shown in FIG. 11. The memory 1220 can have the function of a storage unit. The transceiver 1230 can have the functions of the transceiver unit 1110 shown in FIG. 11.

[0374] As an example, the apparatus 1200 is configured to implement the operations performed by the communication apparatus in the foregoing method embodiments.

[0375] For example, the processor 1210 is configured to execute the computer programs or instructions stored in the memory 1220, to implement the related operations of the terminal device or the network device in the foregoing method embodiments.

[0376] It should be understood that when the communication device 1200 is a circuit or chip responsible for communication functions, such as a Modem chip or a System on Chip (SoC) chip containing a Modem core or a SIP chip, the communication device 1200 can not include the memory 1220, which can be built-in or external to the communication device.

[0377] It should be understood that the processor mentioned in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0378] It should also be understood that the memory mentioned in the embodiments of the present application can be a volatile memory and / or a non-volatile memory. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM). For example, the RAM can be used as an external cache. As an example but not limitation, the RAM includes the following various forms: static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM) and direct memory bus random access memory (DR RAM).

[0379] It should be noted that when the processor is a general processor, a DSP, an ASIC, a FPGA or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, the memory (storage module) can be integrated in the processor.

[0380] It should also be noted that the memory described herein is intended to include, but not limited to, these and any other suitable type of memory.

[0381] Referring to FIG. 13, FIG. 13 is a schematic diagram of a chip system 1300 provided by an embodiment of the present application. The chip system 1300 (or also referred to as a processing system) includes a logic circuit 1310 and an input / output interface 1320.

[0382] The logic circuit 1310 can be a processing circuit in the chip system 1300. The logic circuit 1310 can be coupled to a storage unit, invoke a computer program or instruction in the storage unit, so that the chip system 1300 can implement the methods and functions of the embodiments of the present application. The input / output interface 1320 can be an input / output circuit in the chip system 1300, output the information processed by the chip system 1300, or input the data or signaling information to be processed by the chip system 1300 for processing.

[0383] Optionally, the logic circuit 1310 can be implemented by one or more processors, including the one or more processors or processing parts in the one or more processors.

[0384] Optionally, the input / output interface 1320 can include a transceiver circuit, a transceiver, an input / output circuit or a communication interface.

[0385] As an option, the chip system 1300 is configured to implement the operations performed by the communication apparatus (such as a terminal device, and also such as a network device) in the above various method embodiments.

[0386] For example, the logic circuit 1310 is configured to implement the processing-related operations performed by the communication apparatus (such as a terminal device, and also such as a network device) in the above method embodiments; and the input / output interface 1320 is configured to implement the sending and / or receiving-related operations performed by the communication apparatus (such as a terminal device, and also such as a network device) in the above method embodiments.

[0387] The embodiments of the present application also provide a computer readable storage medium having stored thereon a computer program or instruction for implementing the method performed by the communication apparatus (such as a terminal device, and also such as a network device) in the above various method embodiments.

[0388] For example, the computer program, when executed by a computer, enables the computer to implement the method performed by the communication device (e.g., the terminal device, or the network device) in each of the above-mentioned method embodiments.

[0389] The embodiments of the present application further provide a computer program product, which contains a computer program or instructions, and the computer program or instructions, when executed by a computer, implement the method performed by the communication device (e.g., the terminal device, or the network device) in each of the above-mentioned method embodiments.

[0390] The embodiments of the present application further provide a communication system, which includes the terminal device and / or the network device in each of the above-mentioned embodiments. For example, the system includes the first terminal device and the access network device in FIG. 8.

[0391] The explanations and beneficial effects of the related contents in any of the above-mentioned devices can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0392] In several embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented by other means. For example, the apparatus embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed each other can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0393] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer programs or instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. For example, the computer can be a personal computer, a server, a network device, or the like. The computer programs or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer programs or instructions can be transferred from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media sets. The available media can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD), etc. For example, the foregoing available media includes but is not limited to: a variety of media that can store program codes such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0394] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: The method comprises: receiving first information, the first information being used for indicating first grid information, the first grid information comprising a channel feature set of at least one terminal device, the channel feature set being used for assisting communication, the at least one terminal device comprising a first terminal device; sending first indication information to an access network device according to the first grid information, the first indication information being used for indicating at least one sub-grid information, each of the at least one sub-grid belonging to the first grid; receiving second information, the second information being used for indicating sub-grid information corresponding to the first terminal device, the sub-grid information corresponding to the first terminal device comprising a channel feature set of the first terminal device, the sub-grid information corresponding to the first terminal device being determined by the first terminal device or the access network device based on the at least one sub-grid information, the sub-grid corresponding to the first terminal device belonging to the at least one sub-grid.

2. The method of claim 1, wherein, The first indication information is further used for indicating that the access network device sends second indication information to the first terminal device, the second indication information being used for indicating the at least one sub-grid information to the first terminal device.

3. The method according to claim 1 or 2, characterized in that, The sending of the first indication information to the access network device according to the first grid information comprises: determining the at least one sub-grid information according to the first grid information; sending the first indication information.

4. The method according to any one of claims 1-3, characterized in that, The channel feature set comprises at least one of information of a multipath between the at least one terminal device and the access network device, a channel statistical covariance matrix, an angle spectrum, and a time delay spectrum.

5. The method according to any one of claims 1-3, characterized in that, The first information comprises coarse positioning position information of the first terminal device and / or an index of a first grid corresponding to the first terminal device.

6. The method of claim 5, wherein, The first information further comprises a positioning accuracy error of the coarse positioning.

7. The method according to any one of claims 1-3, characterized in that, The first indication information comprises at least one of base or spectrum information corresponding to each of the at least one sub-grid, an index corresponding to each of the at least one sub-grid, and position information of each of the at least one sub-grid.

8. The method of any one of claims 1-3, wherein, The second information comprises an index or position information of the sub-grid corresponding to the first terminal device.

9. A communication method characterized by comprising: The method comprises: receiving second indication information and a first reference signal, the second indication information being used for indicating at least one sub-grid information, each of the at least one sub-grid belonging to a first grid, first grid information comprising a channel feature set of at least one terminal device, the channel feature set being used for assisting communication, the at least one terminal device comprising a first terminal device; determining sub-grid information corresponding to the first terminal device according to the second indication information and the first reference signal, the sub-grid information corresponding to the first terminal device comprising a channel feature set of the first terminal device, the sub-grid corresponding to the first terminal device belonging to the at least one sub-grid.

10. The method of claim 9, wherein, The method further comprises: sending second information to a first network function, the second information being used for indicating the sub-grid information corresponding to the first terminal device.

11. The method according to claim 9 or 10, characterized in that, The channel feature set includes at least one of information of a multipath between the at least one terminal device and the access network device, a channel statistical covariance matrix, an angle spectrum, and a delay spectrum.

12. The method of claim 10, wherein, The second information includes index or location information of the sub-grid corresponding to the first terminal device.

13. A communication method characterized by comprising: Comprise: receiving first indication information, the first indication information being used to indicate information of at least one sub-grid, each of the at least one sub-grid belonging to a first grid, information of the first grid including a channel feature set corresponding to at least one terminal device, the channel feature set being used to assist communication, the at least one terminal device including a first terminal device; receiving a second reference signal; determining information of a sub-grid corresponding to the first terminal device according to the first indication information and the second reference signal, the information of the sub-grid corresponding to the first terminal device indicating a channel feature set of the first terminal device, the sub-grid corresponding to the first terminal device belonging to the at least one sub-grid.

14. The method of claim 13, wherein, The method further comprises: sending second information to the first network function, the second information being used to indicate information of the sub-grid corresponding to the first terminal device.

15. The method according to claim 13 or 14, characterized in that, The channel feature set includes at least one of information of a multipath between the at least one terminal device and the access network device, a channel statistical covariance matrix, an angle spectrum, and a delay spectrum.

16. The method according to claim 13 or 14, characterized in that The first indication information includes at least one of base or map information corresponding to each of the at least one sub-grid, index corresponding to each of the at least one sub-grid, and location information of each of the at least one sub-grid.

17. The method of claim 14, wherein, The second information includes index or location information of the sub-grid corresponding to the first terminal device.

18. A method of communication, comprising: Comprise: receiving first indication information from a first network function, the first indication information being used to indicate information of at least one sub-grid to an access network device, each of the at least one sub-grid belonging to a first grid, information of the first grid including a channel feature set corresponding to at least one terminal device, the channel feature set being used to assist communication, the at least one terminal device including a first terminal device; receiving a second reference signal from the first terminal device; determining information of a sub-grid corresponding to the first terminal device according to the first indication information and the second reference signal, the information of the sub-grid corresponding to the first terminal device indicating a channel feature set of the first terminal device, the sub-grid corresponding to the first terminal device belonging to the at least one sub-grid.

19. The method of claim 18, wherein, The method further comprises: sending second information to the first network function, the second information being used to indicate information of the sub-grid corresponding to the first terminal device.

20. The method of claim 18 or 19, wherein, The channel feature set includes at least one of information of a multipath between the at least one terminal device and the access network device, a channel statistical covariance matrix, an angle spectrum, and a delay spectrum.

21. The method of claim 18 or 19, wherein, The first indication information includes at least one of base or map information corresponding to each of the at least one sub-grid, index corresponding to each of the at least one sub-grid, and location information of each of the at least one sub-grid.

22. The method of claim 19, wherein, The second information includes index or position information of the sub-grid corresponding to the first terminal device.

23. A communication system, characterized by The first network function and the access network device, The first network function is configured to receive first information, the first information being used to indicate information of a first grid, the information of the first grid including a channel feature set of at least one terminal device, the channel feature set being used to assist communication, the at least one terminal device including a first terminal device; The first network function is further configured to send first indication information to the access network device according to the information of the first grid, the first indication information being used to indicate information of at least one sub-grid, each of the at least one sub-grid belonging to the first grid; The first network function is further configured to receive second information, the second information being used to indicate information of a sub-grid corresponding to the first terminal device, the information of the sub-grid corresponding to the first terminal device including a channel feature set of the first terminal device, the information of the sub-grid corresponding to the first terminal device being determined by the first terminal device or the access network device based on the information of the at least one sub-grid, the sub-grid corresponding to the first terminal device belonging to the at least one sub-grid.

24. The communication system of claim 23, wherein The access network device is further configured to send second indication information to the first terminal device according to the first indication information, the second indication information being used to indicate information of the at least one sub-grid; The access network device is further configured to send a first reference signal to the first terminal device; The second indication information and the first reference signal are used by the first terminal device to determine the information of the sub-grid corresponding to the first terminal device.

25. The communication system of claim 24, wherein, The first network function is further configured to receive the second information from the first terminal device.

26. The communication system of claim 23, wherein The access network device is configured to receive a second reference signal from the first terminal device; The access network device is further configured to determine the information of the sub-grid corresponding to the first terminal device according to the first indication information and the second reference signal.

27. The communication system of claim 26, wherein, The access network device is further configured to send the second information to the first network function.

28. The communication system of any of claims 23-27, wherein, The first network function is further configured to determine the channel feature set of the first terminal device according to the information of the sub-grid corresponding to the first terminal device.

29. A communications device, characterized by comprises: a processor configured to execute computer programs or instructions stored in a memory, so that the apparatus executes the method of any one of claims 1 to 22.

30. The apparatus of claim 29, wherein, The apparatus further comprises the memory.

31. A computer readable storage medium, characterized in that, The computer programs or instructions stored on the computer readable storage medium cause the computer to execute the method of any one of claims 1 to 22 when the computer programs or instructions run on the computer.

32. A computer program product, characterised in that, The computer program product comprises computer programs or instructions for executing the method of any one of claims 1 to 22.

33. A communications device, characterized by comprises: functional modules or units for implementing the method of any one of claims 1 to 22.

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