Communication method and device

Abstract

The invention provides a communication method and device, and relates to the technical field of communication. In the method, a process that terminal equipment or network equipment transmits radio frequency map data to a core network element through an NAS message is designed, and the radio frequency map data carries channel information and position information at the same time, so that the radio frequency map data is more diversified than information / signals carried by positioning data supported by a current protocol, and therefore, the positioning accuracy is improved. Compared with an interaction process of positioning data transmission supported by a current protocol, the use scene for transmitting the radio frequency map data is wider, for example, the method can be applied to transmission of other sensing data, so that the requirements of diversified data transmission are supported, and the method can be applied to future communication application scenes.

Description

Technical Field

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

[0002] With the increasing variety of wireless communication applications, future wireless communication processes may generate large amounts of data and / or diverse data types, such as sensor data, artificial intelligence (AI) data, and channel data. These data will also bring new demands for transmission.

[0003] Current 5G communication protocols have designed corresponding non-access stratum (NAS) cells and interaction procedures for location data transmission in sensing data. However, the NAS cells designed only for location data transmission in the aforementioned protocols can only support the transmission of location data (including measurement information, location results, etc.), which limits their application scenarios. If they cannot be directly applied to the transmission of other sensing data, they may not be suitable for future communication application scenarios. Summary of the Invention

[0004] This application provides a communication method and apparatus involving the NAS layer reporting and distribution of radio frequency map (RF map) data to support standardized processes. RF map data has a wider range of applications and can be applied to future communication scenarios. RF map data can also be described in other ways, such as radio map data, which has the same data type and content as RF map data.

[0005] Firstly, a communication method is provided. This method can be executed by a first communication device, for example, by the first communication device itself, or by a module applied to the first communication device (e.g., a processor, chip, or chip system), or by a logic node, logic module, or software capable of implementing all or part of the functions of the first communication device. For ease of description, the following description uses the execution of the method by the first communication device as an example. The method includes: determining the radio frequency map data of the first device by receiving a radio frequency map (RF map) measurement signal, and sending the RF map data to the core network element via a NAS message. The RF map data is used to indicate the channel information and location information of the first device, and the channel information and location information have a corresponding relationship.

[0006] Based on the method in the first aspect, it is known that the first communication device (i.e., terminal device or network device) is designed to transmit radio frequency map data to the core network element through NAS messages. The radio frequency map data carries both channel information and location information. Therefore, the information / signals carried by the radio frequency map data are more diverse than those carried by the positioning data supported by the current protocol. Thus, compared with the interaction process of positioning data transmission supported by the current protocol, the application scenarios of transmitting radio frequency map data are more extensive. For example, it can be applied to the transmission of other sensing data, thereby supporting the needs of diversified data transmission and can be applied to future communication application scenarios.

[0007] Furthermore, by leveraging the correspondence between channel and location information within the radio frequency (RF) map data, terminal or network devices can subsequently retrieve channel information corresponding to a specific location from the RF map data, thereby assisting in communication tasks. For example, by retrieving channel information corresponding to a specific location from the RF map data, a terminal device can determine the channel's direction / angle, thus reducing the pilot scanning range. In other words, the terminal device determines pilot allocation and measurement methods based on the RF map data to reduce pilot overhead. As another example, the terminal device can determine the approximate beam direction range based on the channel information in the RF map data, reducing the communication overhead and latency of beam searching. In short, RF map data can assist in communication tasks and can be applied to various communication scenarios.

[0008] Optionally, the radio frequency (RF) map data may include RF map measurement information and / or RF map estimation results. The RF map measurement information may include RF map measurement signals and the location information of the first device, while the RF map estimation results may include the channel information and location information of the first device.

[0009] The radio frequency (RF) map measurement information can be measurement data determined by the first communication device based on the RF map measurement signal, such as received signals, channel vectors / matrices, etc. The RF map estimation result information can be the result estimated by the first communication device based on the RF map measurement information. If the RF map data includes RF map measurement information, it implicitly instructs the core network elements to process the RF map measurement information, such as performing channel estimation, which can save computational overhead on the first communication device. If the RF map data includes RF map estimation result information, it can save computational overhead on the core network elements.

[0010] Optionally, the radio frequency map data may also include indication information, which indicates the data format of radio frequency map measurement information and / or radio frequency map estimation results, enabling core network elements to receive and process radio frequency map data more conveniently.

[0011] Wherein, when the radio frequency map data includes radio frequency map measurement information, the data format of the indication information used to indicate the radio frequency map measurement information is vector information and / or matrix information. When the radio frequency map data includes radio frequency map estimation result information, the data format of the indication information used to indicate the radio frequency map estimation result information is at least one of the following forms: scalar information, vector information, or matrix information.

[0012] When the radio frequency (RF) map data includes RF map estimation results, the matrix information can include multi-path component (MPC) information. By designing different data formats corresponding to different contents included in the RF map data, core network elements can more conveniently receive and process the RF map data.

[0013] Optionally, the radio frequency map estimation results may include MPC information, which includes L-path parameters. Each L-path parameter includes at least one of the following: power, phase, time delay, angle of arrival (AOA), or angle of departure (AOD), where L is an integer greater than or equal to 1. MPC information can concisely and efficiently represent channel-related information.

[0014] Optionally, the radio frequency map data may include timestamps, which are used to indicate the time information when the radio frequency map measurement signals were acquired.

[0015] Both radio frequency (RF) map measurement information and RF map estimation results can include timestamps. In this way, when subsequent terminals or network devices acquire RF map data, they can know the accurate time corresponding to the RF map data and better utilize the RF map data to achieve auxiliary communication functions.

[0016] In one possible implementation, the communication method may include: receiving a data request message from a core network element, the data request message being used to request information related to the radio frequency map. The first communication device then sends radio frequency map data to the core network element via a NAS message based on the data request message. Thus, by sending the radio frequency map data only after the first communication device receives the data request message, resource waste can be avoided.

[0017] Optionally, when the data request message is used to request measurement information related to the radio frequency (RF) map, the RF map data includes the RF map measurement information. When the data request message is used to request an RF map estimation result determined based on the measurement information, the RF map data includes the RF map estimation result information.

[0018] In this way, the first communication device determines whether to send intermediate information (i.e., radio frequency map measurement information) or result information (i.e., radio frequency map estimation result information) based on the content requested in the data request message, or both. This improves the flexibility of the transmitted content and the accuracy of the interactive content, and can accurately transmit data that meets the needs of the core network elements.

[0019] Optionally, the location information can be coordinate point information and / or coordinate range information. The coordinate range information can be the location information of regions such as polygons, circles, and ellipses; for example, the location of a polygon, circle, or ellipse can be represented by multiple coordinate point information. Representing location information using coordinate point information and / or coordinate range information makes the representation of location information more accurate, thereby making the correspondence between location information and channel information in radio frequency map data more accurate.

[0020] Optionally, the radio frequency map data may also include the identifier of the cell where the first device is located and / or the identifier of the network device serving the first device.

[0021] This allows radio frequency map data to be associated with specific cells and / or specific network devices. Core network elements integrate / aggregate radio frequency map data sent by multiple devices, and subsequent terminals can query the core network elements for radio frequency map data corresponding to specific cells and / or specific network devices to assist in communication tasks.

[0022] Secondly, a communication method is provided, the method comprising: a core network element receiving radio frequency map data via NAS messages; wherein the radio frequency map data is used to indicate the channel information and location information of a first device, and the channel information and location information have a corresponding relationship.

[0023] Optionally, radio frequency map data may include radio frequency map measurement information and / or radio frequency map estimation results.

[0024] The radio frequency map measurement information may include radio frequency map measurement signals and the location information of the first device, and the radio frequency map estimation result information includes the channel information of the first device and the location information of the first device.

[0025] Optionally, the radio frequency map data may also include indication information, which is used to indicate the data format of radio frequency map measurement information and / or radio frequency map estimation results.

[0026] Wherein, when the radio frequency map data includes radio frequency map measurement information, the data format of the indication information used to indicate the radio frequency map measurement information is vector information and / or matrix information; when the radio frequency map data includes radio frequency map estimation result information, the data format of the indication information used to indicate the radio frequency map estimation result information is at least one of the following forms: scalar information, vector information or matrix information.

[0027] Optionally, the radio frequency map estimation results may include multipath component (MPC) information, which includes L-path parameters. Each path parameter in the L-path parameters includes at least one of the following: power, phase, time delay, AOA, or AOD, where L is an integer greater than or equal to 1.

[0028] Optionally, the radio frequency map data may include timestamps, which are used to indicate the time information when the radio frequency map measurement signals were acquired.

[0029] In one possible implementation, the communication method may include sending a data request message for requesting information related to the radio frequency map.

[0030] Optionally, when the data request message is used to request measurement information related to the radio frequency map, the radio frequency map data includes the radio frequency map measurement information; when the data request message is used to request the radio frequency map estimation result determined based on the measurement information, the radio frequency map data includes the radio frequency map estimation result information.

[0031] Optionally, the location information may be coordinate point information and / or coordinate range information.

[0032] Optionally, the radio frequency map data may also include the identifier of the cell where the first device is located and / or the identifier of the network device serving the first device.

[0033] The technical effects of the method described in the second aspect above can also be found in the description of the first aspect above, and will not be repeated here.

[0034] Thirdly, a communication method is provided. This method can be executed by a first communication device, for example, by the first communication device itself, or by a module applied to the first communication device (e.g., a processor, chip, or chip system), or by a logic node, logic module, or software capable of implementing all or part of the functions of the first communication device. For ease of description, the following description uses the execution of the method by the first communication device as an example. The method includes: sending a data request message to a core network element, the data request message being used to request data related to the radio frequency map, and receiving radio frequency map data from the core network element via a NAS message. The radio frequency map data is used to indicate the channel information and location information of the first device, and the channel information and location information have a corresponding relationship.

[0035] Based on the third aspect of the method, by designing a NAS layer distribution process for radio frequency (RF) map data, and considering that RF map data simultaneously carries channel and location information, the information / signals carried by RF map data are more diverse than those supported by current positioning data protocols. Therefore, compared to the interaction process of current positioning data transmission, this method of transmitting RF map data has a wider range of applications, such as the transmission of other sensing data, thus supporting diverse data transmission needs and applicable to future communication applications. Furthermore, by leveraging the correspondence between channel and location information contained in the RF map data, terminal devices or network devices can obtain channel information corresponding to a specific location from the RF map data to assist in communication tasks, making it applicable to various communication scenarios.

[0036] Optionally, the radio frequency map data may include radio frequency map estimation results.

[0037] The radio frequency map estimation results may include the channel information and location information of the first device.

[0038] In other words, when the core network element sends radio frequency map data to the first communication device, it sends radio frequency map estimation result information, i.e., result data, instead of sending intermediate data (such as the radio frequency map measurement information mentioned above). In this way, the computational overhead of the first communication device can be saved.

[0039] Optionally, the radio frequency map data may also include indication information, which is used to indicate the data format of the radio frequency map estimation results.

[0040] Optionally, the MPC information includes L-path parameters, each of which includes at least one of the following: power, phase, time delay, AOA or AOD, where L is an integer greater than or equal to 1.

[0041] Optionally, the radio frequency map data includes a timestamp, which is used to indicate the time information for acquiring the radio frequency map measurement signal. The radio frequency map data is determined based on the radio frequency map measurement signal.

[0042] Optionally, the location information may be coordinate point information and / or coordinate range information.

[0043] Optionally, the radio frequency map data may also include the identifier of the cell where the first device is located and / or the identifier of the network device serving the first device.

[0044] The technical effects of the method described in the third aspect can be referenced from the descriptions of either the first or second aspect, and will not be repeated here.

[0045] Fourthly, a communication method is provided, comprising: a core network element receiving a data request message, the data request message being used to request data related to a radio frequency map, and sending the radio frequency map data via a NAS message. The radio frequency map data is used to indicate the channel information and location information of a first device, and the channel information and location information have a corresponding relationship.

[0046] Optionally, the radio frequency map data may include radio frequency map estimation results.

[0047] The radio frequency map estimation results may include the channel information and location information of the first device.

[0048] In other words, when the core network element sends radio frequency map data to the first communication device, it sends radio frequency map estimation result information, i.e., result data, instead of sending intermediate data (such as the radio frequency map measurement information mentioned above). In this way, the computational overhead of the first communication device can be saved.

[0049] Optionally, the radio frequency map data may also include indication information, which is used to indicate the data format of the radio frequency map estimation results.

[0050] Optionally, the MPC information includes L-path parameters, each of which includes at least one of the following: power, phase, time delay, AOA or AOD, where L is an integer greater than or equal to 1.

[0051] Optionally, the radio frequency map data includes a timestamp, which is used to indicate the time information for acquiring the radio frequency map measurement signal. The radio frequency map data is determined based on the radio frequency map measurement signal.

[0052] Optionally, the location information may be coordinate point information and / or coordinate range information.

[0053] Optionally, the radio frequency map data may also include the identifier of the cell where the first device is located and / or the identifier of the network device serving the first device.

[0054] The technical effects of the method in the fourth aspect mentioned above can also be found in the descriptions of any of the first to third aspects mentioned above, and will not be repeated here.

[0055] Fifthly, a communication device is provided. The communication device includes a processor configured to perform the method according to any one of the embodiments of the first to fourth aspects.

[0056] In one possible implementation, the communication device of the fifth aspect may further include a transceiver. This transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used by the communication device of the fifth aspect to communicate with other communication devices.

[0057] In one possible implementation, the communication device of the fifth aspect may further include a memory. This memory may be integrated with the processor or disposed separately. The memory may be used to store computer programs and / or data relating to the methods of any of the embodiments of the first to fourth aspects.

[0058] In the embodiments of this application, the communication device of the fifth aspect can be a terminal device or network device of either the first aspect or the third aspect, or a chip (system) or other component or assembly disposed in the terminal device or network device, or a device containing the terminal device or network device.

[0059] Furthermore, the technical effects of the communication device in the fifth aspect can be referred to the technical effects of any of the embodiments in the first to fourth aspects, and will not be repeated here.

[0060] A sixth aspect provides a communication device. The communication device includes a processor coupled to a memory, the processor being configured to execute a computer program or instructions stored in the memory, causing the communication device to perform the method of any one of the embodiments of the first to fourth aspects.

[0061] In one possible implementation, the communication device may further include a transceiver. The transceiver may be a transceiver circuit or an interface circuit. The transceiver can be used for communication between the communication device described in the sixth aspect and other communication devices.

[0062] In one possible implementation, the communication device further includes the memory for storing the aforementioned computer program or instructions. Optionally, the memory and processor are integrated together.

[0063] In the embodiments of this application, the communication device described in the sixth aspect may be a terminal device or network device described in either the first aspect or the third aspect, or may be a chip (system) or other component or assembly disposed in the terminal device or network device, or may be a device containing the terminal device or network device.

[0064] Furthermore, the technical effects of the communication device described in the sixth aspect can be referred to the technical effects of any of the embodiments in the first to fourth aspects, and will not be repeated here.

[0065] A seventh aspect provides a communication system. The communication system includes: a first communication device for performing the method described in any one of the embodiments of the first and third aspects, and a core network element for performing the method described in any one of the embodiments of the second and fourth aspects.

[0066] Eighthly, a computer-readable storage medium is provided, comprising: a computer program or instructions; when the computer program or instructions are executed, causing the method as described in any of the first to fourth aspects above to be implemented.

[0067] Ninth aspect, a computer program product is provided, including a computer program or instructions that, when executed, cause the method as described in any of the first to fourth aspects above to be implemented.

[0068] In a tenth aspect, a chip is provided, including a processor connected to a memory for storing a computer program, the processor for executing the computer program stored in the memory, such that the method described in any of the first to fourth aspects above is implemented. Attached Figure Description

[0069] Figure 1 A schematic diagram of the architecture of a communication system to which the method provided in the embodiments of this application is applicable. Figure 1 ;

[0070] Figure 2 A schematic diagram of the architecture of a communication system to which the method provided in the embodiments of this application is applicable. Figure 2 ;

[0071] Figure 3 A schematic diagram of the process for transmitting radio frequency map data provided in the embodiments of this application. Figure 1 ;

[0072] Figure 4 A schematic diagram of the process for transmitting radio frequency map data provided in the embodiments of this application. Figure 2 ;

[0073] Figure 5 A schematic diagram of the process for transmitting radio frequency map data provided in the embodiments of this application. Figure 3 ;

[0074] Figure 6 A schematic diagram of the communication method provided in the embodiments of this application Figure 1 ;

[0075] Figure 7 A schematic diagram of the communication method provided in the embodiments of this application Figure 2 ;

[0076] Figure 8 Schematic diagram of the communication device provided in the embodiments of this application Figure 1 ;

[0077] Figure 9 Schematic diagram of the communication device provided in the embodiments of this application Figure 2 . Detailed Implementation

[0078] The technical solutions of this application embodiment can be applied to various communication systems, such as Wireless Fidelity (Wi-Fi) systems, vehicle-to-everything (V2X) communication systems, device-to-device (D2D) communication systems, vehicle-to-everything (V2X) communication systems, fourth-generation (4G) mobile communication systems, such as Long Term Evolution (LTE) systems, Worldwide Interoperability for Microwave Access (WiMAX) communication systems, fifth-generation (5G) mobile communication systems, such as New Radio (NR) systems, and future communication systems.

[0079] For ease of understanding, the technical terms involved in the embodiments of this application will be introduced below.

[0080] 1. Radio frequency map (RF map) data

[0081] RF map data includes two parts: channel information (radio frequency data) and geographic location information.

[0082] 1) Channel information

[0083] Channel information can take the form of multi-path component (MPC) information, scalar information, vector / matrix information, etc.

[0084] MPC information includes multiple sets of multipath parameters, such as the number of paths L. Each path parameter includes power, phase, time delay, angle of arrival (AOA), and angle of departure (AOD). For example, one possible set of MPC information is shown in Table 1.

[0085] Table 1: MPC Information

[0086]

[0087] As shown in Table 1, the MPC information can include parameters for L paths. The parameters for each path include power, phase, time delay, angle of arrival, and departure angle. For example, the parameters for path 1 include power A1, phase, and time delay. Delay τ1, Angle of Arrival θ AOA,1 and departure angle θ AOD,1The parameters of diameter L include power A. L Phase Delay τ L Angle of arrival θ AOA,L and departure angle θ AOD,L .

[0088] Scalar information: Single numbers, such as the channel quality indicator (CQI), rank indicator (RI), and reference signal received power (RSRP) in broadband mode.

[0089] Vector / matrix information: contains multiple numbers, such as CQI, RI, RSRP of sub-band modes (multiple numbers corresponding to multiple sub-bands), as well as channel impulse response (CIR), power delay profile (PDP), etc.

[0090] 2) Geographic location information

[0091] Geographic location information can be coordinate points on a regular grid, or it can be recorded as regular or irregular coordinate ranges, such as polygonal, circular, or elliptical regions.

[0092] Each set of channel information corresponds to a geographical location. RF map data can contain one or more sets of channel information. For example, taking N sets of channel information (where N is a positive integer), the RF map data recording format is as follows:

[0093] {Channel Information 1, Geographic Location Information 1}

[0094] {Channel Information 2, Geographic Location Information 2}

[0095] …

[0096] {Channel information N, Geographic location information N}

[0097] It can be seen that there is a one-to-one correspondence between channel information and geographical location information in the RF map data.

[0098] 2. Locating data transmission protocols and cells

[0099] Currently, the 3rd generation partnership project (3GPP) NAS protocol only designs related protocols and information cells for location data transmission, mainly including two aspects:

[0100] On the one hand, related protocols and information elements were designed based on the positioning data transmission measured by the terminal device. Specifically, the terminal device collects positioning data and sends it to the core network (CN) through the LTE positioning protocol (LPP). The LPP protocol introduces the ProvideLocationInformation element to carry positioning-related information (such as measurement information, positioning results, etc.).

[0101] On the other hand, related protocols and information elements were designed for positioning data transmission based on base station (BS) measurements. Specifically, the BS collects positioning data and sends it to the core network through the NR positioning protocol A (NRPPa). The NRPPa protocol introduces the Measurement Response information element to carry positioning-related measurement information.

[0102] However, with the increasing diversity of wireless communication applications, future wireless communication processes will generate a large amount of native data, such as native data and local traffic from the future radio access network (RAN). This native data may include, for example:

[0103] 1) Sensing data: acquired environmental reflection point data, environmental patch data, environmental imaging data, environmental reconstruction map data, RF map data, positioning data, etc.

[0104] 2) Artificial intelligence (AI) data: including training data, model / gradient data, inference results, feature data, performance data, etc.

[0105] 3) Channel data: such as the H matrix and channel state information (CSI) fed back by the equipment in a multi-antenna system.

[0106] The aforementioned raw data is characterized by its large volume, redundancy / correlation, and diverse data types. This data also presents new demands for transmission, such as the need for compression, reduction of transmission volume, and the use of different data types in different scenarios.

[0107] Current 5G communication protocols only design corresponding non-access stratum (NAS) information elements (IEs) and interaction processes for location data transmission. These can only support the transmission of location data (including measurement information and location results), and cannot be directly used for the representation and transmission (such as reporting and sending) of sensing data like environmental maps and RF maps. In other words, the use cases for NAS elements designed for location data transmission in the current protocol are limited; if they cannot be directly applied to the transmission of other sensing data, they may not be suitable for future communication applications.

[0108] Furthermore, the current protocol only defines the reporting process for location data, without designing a protocol for the distribution process, and does not support the distribution of RF map data in the core network.

[0109] To address the aforementioned technical issues, this application proposes a NAS layer reporting and distribution method for RF map data to support a standardized process that can be applied to future communication application scenarios. This will be described in detail below.

[0110] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0111] In the embodiments of this application, "instruction" can include direct and indirect instructions, as well as explicit and implicit instructions. The information indicated by a certain piece of information is called the information to be instructed. In the specific implementation process, there are many ways to instruct the information to be instructed, such as, but not limited to, directly instructing the information to be instructed, such as the information to be instructed itself or its index. It can also indirectly instruct the information to be instructed by instructing other information, where there is a correlation between the other information and the information to be instructed. It can also instruct only a part of the information to be instructed, while the other parts are known or pre-agreed upon. For example, the instruction of specific information can be achieved by using a pre-agreed (e.g., protocol-defined) arrangement of various pieces of information, thereby reducing instruction overhead to some extent. At the same time, common parts of various pieces of information can be identified and uniformly indicated to reduce the instruction overhead caused by individually indicating the same information.

[0112] Furthermore, the specific instruction method can also be any existing instruction method, such as, but not limited to, the above-mentioned instruction methods and their various combinations. As described above, for example, when multiple pieces of information of the same type need to be indicated, the instruction methods for different pieces of information may differ. In the specific implementation process, the required instruction method can be selected according to specific needs. This application embodiment does not limit the selected instruction method. Therefore, the instruction methods involved in this application embodiment should be understood to cover various methods that enable the party to be instructed to obtain the information to be indicated.

[0113] The information to be instructed can be sent as a whole or divided into multiple sub-information messages, and the sending period and / or timing of these sub-information messages can be the same or different. The specific sending method is not limited in this application embodiment. The sending period and / or timing of these sub-information messages can be predefined, for example, according to a protocol, or configured by the sending node device by sending configuration information to the receiving node device.

[0114] In this application, "sending information" can be understood as one device sending information to another device, or it can also be understood as one logical module within a device sending information to another logical module. For example, "network device sending information" can be understood as a network device sending information to another device (such as a terminal device or other network devices), or it can be understood as logical module 1 in the network device sending information to logical module 2 in the network device.

[0115] In this application, "receiving information" can be understood as one device receiving information from another device, or it can also be understood as a logical module within a device receiving information from another logical module. For example, "network device receiving information" can be understood as a network device receiving information from another device (such as a terminal device or other network devices), or it can be understood as logical module 1 in the network device receiving information from logical module 2 in the network device.

[0116] In this application, the phrase "sending information to... (e.g., a terminal device)" or the related illustrations in the accompanying drawings can be understood as the destination of the information being the terminal device. This can include sending information directly or indirectly to the terminal device. Similarly, "receiving information from... (e.g., a terminal device)," "receiving information from... (e.g., a terminal device)," or "receiving information sent (e.g., by a terminal device)," or the related illustrations in the accompanying drawings, can be understood as the source of the information being the terminal device. This can include receiving information directly or indirectly from the terminal device. Information may undergo necessary processing between the source and destination, such as format changes, but the destination can understand the valid information from the source. Similar expressions in this application can be interpreted similarly, and will not be elaborated further here.

[0117] "Predefined" or "pre-configured" can be achieved by pre-saving corresponding codes, tables, or other means that can be used to indicate relevant information in the device. This application does not limit the specific implementation method. "Saving" can refer to saving in one or more memories. These memories can be separate installations or integrated into the encoder, decoder, processor, or communication device. Alternatively, some memories can be separately installed, while others are integrated into the decoder, processor, or communication device. The type of memory can be any form of storage medium, and this application does not limit this.

[0118] The “protocol” mentioned in this application embodiment may refer to a protocol family in the field of communication, a standard protocol with a similar protocol family frame structure, or a related protocol applied to future communication systems. This application embodiment does not specifically limit this.

[0119] In the embodiments of this application, descriptions such as "when," "under the circumstances," "if," and "if" all refer to the device making corresponding processing under certain objective circumstances, and are not limited to a specific time. They do not require the device to make a judgment action during implementation, nor do they imply any other limitations.

[0120] In the description of the embodiments of this application, unless otherwise stated, " / " indicates that the objects before and after are in an "or" relationship. For example, A / B can represent A or B. "And / or" in the embodiments of this application is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone, where A and B can be singular or plural. Furthermore, in the description of the embodiments of this application, unless otherwise stated, "multiple" refers to two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple. Additionally, to facilitate a clear description of the technical solutions of the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with essentially the same function and effect. Those skilled in the art will understand that the terms "first," "second," etc., do not limit the quantity or order of execution, and that "first," "second," etc., are not necessarily different. Furthermore, in the embodiments of this application, words such as "exemplary" or "for example" are used to indicate that something is being used as an example, illustration, or description. Any embodiment or implementation described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or implementations. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner for ease of understanding.

[0121] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0122] To facilitate understanding of the embodiments of this application, let's first take... Figure 1 The communication system illustrated herein is used as an example to illustrate a communication system applicable to embodiments of this application. For example, Figure 1 A schematic diagram of the architecture of a communication system to which the method provided in the embodiments of this application is applicable. Figure 1 .

[0123] like Figure 1As shown, the communication system mainly includes a first communication device and core network elements. The first communication device can be a terminal device or a network device. The core network elements can be sensing function (SF) network elements, sensing management function (SMF) network elements, location management function (LMF) network elements, etc., or network elements that can implement sensing function, session management function, or location management function in the future; there are no limitations.

[0124] In one possible scenario, this communication system could be applied to 5G or future communication systems, for example... Figure 2 As shown, the communication system 10 includes a RAN 100, a core network (CN) 200, and an Internet 300. The RAN 100 includes at least one RAN node (e.g., Figure 2 110a and 110b (collectively referred to as 110) and at least one terminal device (such as Figure 2 RAN 100, denoted as RAN 120a-120j, is collectively referred to as RAN 120. RAN 100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment. Figure 2 (Not shown in the image). Terminal device 120 is connected to RAN node 110 wirelessly. RAN node 110 is connected to core network 200 wirelessly or via wired connection. The core network equipment in core network 200 and RAN node 110 in RAN 100 can be different physical devices, or they can be the same physical device integrating core network logical functions and radio access network logical functions.

[0125] RAN 100 can be a 3GPP-related cellular system, such as a 4G or 5G mobile communication system, or a future-oriented evolution system (such as a future mobile communication system). RAN 100 can also be an open access network (open RAN, O-RAN, or ORAN), a cloud radio access network (CRAN), or a Wi-Fi system. RAN 100 can also be a communication system that integrates two or more of the above systems.

[0126] RAN node 110, sometimes also referred to as access network equipment, RAN entity, or access node, constitutes part of the communication system and assists terminal equipment in achieving wireless access. Multiple RAN nodes 110 in communication system 10 can be of the same type or different types. In some scenarios, the roles of RAN node 110 and terminal equipment 120 are relative, for example... Figure 2Network element 120i can be a helicopter or a drone, and it can be configured as a mobile base station. For terminal devices 120j that access RAN 100 through network element 120i, network element 120i is a base station; however, for base station 110a, network element 120i is a terminal device. RAN node 110 and terminal device 120 are sometimes referred to as communication devices, for example... Figure 2 Network elements 110a and 110b can be understood as communication devices with base station functions, while network elements 120a-120j can be understood as communication devices with terminal equipment functions.

[0127] In one possible scenario, a RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB), a next-generation base station in a future mobile communication system, a base station in a future mobile communication system, or an access point (AP) in a Wi-Fi system, etc. A RAN node can also be a macro base station (such as...) Figure 2 110a), micro base stations or indoor stations (such as Figure 2 The RAN node can be a relay node or donor node (as described in section 110b), or a wireless controller in a CRAN scenario. Optionally, the RAN node can also be a server, wearable device, vehicle, or in-vehicle equipment. For example, the access network equipment in vehicle-to-everything (V2X) technology can be a roadside unit (RSU). All or part of the functions of the RAN node in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (e.g., a cloud platform). The RAN node in this application can also be a logical node, logical module, or software capable of implementing all or part of the RAN node functions.

[0128] In another possible scenario, multiple RAN nodes collaborate to assist terminal devices in achieving wireless access, with different RAN nodes each implementing a portion of the base station's functions. For example, RAN nodes can be CUs, DUs, CUs (control plane, CP), CUs (user plane, UP), or radio units (RUs). CUs and DUs can be configured separately or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio frequency equipment or radio frequency units, such as RRUs, active antenna units (AAUs), or remote radio heads (RRHs).

[0129] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called O-CU (open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules.

[0130] It is understood that the RAN node mentioned above can be a newly defined name, and RAN nodes can also be described in different ways, such as access node, network device, wireless access node, etc., without limitation. Unless otherwise specified in this application, network device will be used as the term.

[0131] Terminal devices can also be called terminals, user equipment (UE), mobile stations, mobile terminal devices, etc. Terminal devices can be widely used in various scenarios, such as device-to-device (D2D), V2X communication, machine-type communication (MTC), Internet of Things (IoT), point-of-sale (POS) machines, customer-premises equipment (CPE), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables (e.g., smartwatches, smart bracelets, pedometers, smart glasses), smart transportation, smart cities, etc. Terminal devices can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicle devices (e.g., vehicle units, in-vehicle modules, in-vehicle chips, on-board units (OBUs) or telematics boxes (T-BOXs)), drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, satellite terminal devices, etc. The embodiments of this application do not limit the device form of the terminal device.

[0132] For example, this application provides three possible application scenarios, such as scenario 1, scenario 2 and scenario 3 below.

[0133] Scenario 1: The terminal device measures and obtains radio frequency map data, and reports the radio frequency map data to the core network element.

[0134] Figure 3 A schematic diagram of the process for transmitting radio frequency map data provided in the embodiments of this application. Figure 1 .like Figure 3 As shown, the process may include:

[0135] S301, UE and BS exchange radio frequency map data related capabilities and / or data request messages #1 with CN.

[0136] Among them, the capabilities related to radio frequency map data can be the capabilities that radio frequency map data possesses / supports, such as positioning, sensing, and auxiliary communication processes, which are sent by the CN to the UE / BS. Data request message #1 is used by the CN to request data related to the radio frequency map from the UE.

[0137] Among them, UE and BS can interact with network elements such as SF, SMF, and LMF in CN through NAS layer signaling without limitation.

[0138] S302, CN sends measurement signal resources to BS.

[0139] The CN and BS interact via NAS layer signaling to measure signal resources, which are then used for the measurement of radio frequency map measurement signals.

[0140] S303, the BS sends measurement signal resources to the UE.

[0141] The BS and UE measure signal resources through RAN layer signaling interaction.

[0142] S304, CN sends the measurement signal resource location to UE and BS.

[0143] The CN and UE / BS interact via NAS layer signaling to measure signal resource locations, which are then used to schedule the measurement of signal resources.

[0144] S303 and S304 are optional steps, and either one can be executed.

[0145] S305, BS sends a measurement signal to UE.

[0146] The BS sends measurement signals based on the measurement signal resources and / or the location of the measurement signal resources.

[0147] S306, UE reports radio frequency map data to CN.

[0148] Radio frequency (RF) map data can be obtained by the UE based on measurement signals. The RF map data is used to indicate the UE's channel information and location information, and there is a corresponding relationship between the channel information and the location information. After completing the measurement, the UE reports the RF map data to the CN via NAS signaling.

[0149] This interactive process enables the UE to collect radio frequency map data (through downlink transmission) and feed the radio frequency map data back to the CN. The CN then performs data fusion, such as multiple UEs collecting radio frequency map data from multiple areas, with the CN summarizing the radio frequency map data.

[0150] Scenario 2: Network devices measure and obtain radio frequency map data, and report the radio frequency map data to the core network elements.

[0151] Figure 4 A schematic diagram of the process for transmitting radio frequency map data provided in the embodiments of this application. Figure 2 .like Figure 4 As shown, the process may include:

[0152] S401, UE and BS exchange radio frequency map data related capabilities and / or data request messages #2 with CN.

[0153] The capabilities related to radio frequency map data can be found in the description of radio frequency map data related capabilities in S301, and will not be repeated here. Data request message #2 is used by the CN to request data related to the radio frequency map from the BS.

[0154] S402, CN sends measurement signal resources to BS.

[0155] S403, the BS sends measurement signal resources to the UE.

[0156] S404, CN sends measurement signal resource location to UE and BS.

[0157] S403 and S404 are optional steps, and either one can be executed.

[0158] S405, the UE sends a measurement signal to the BS.

[0159] The UE transmits measurement signals based on the measurement signal resources and / or the location of the measurement signal resources. The UE and BS interact with the measurement signal resources via NAS layer signaling.

[0160] S406, BS reports radio frequency map data to CN.

[0161] Radio frequency (RF) map data can be obtained by the BS based on measurement signals. RF map data is used to indicate the UE's channel information and location information, and there is a corresponding relationship between the channel information and location information. After the UE completes the measurement, the BS completes the measurement and reports the RF map data to the CN via NAS signaling.

[0162] This interactive process enables the BS to collect radio frequency map data (through uplink transmission) and feed the radio frequency map data back to the CN. The CN then performs data fusion. For example, the BS can communicate with UEs in multiple areas in batches to collect radio frequency map data for the corresponding areas, and then the CN can summarize the radio frequency map data.

[0163] Scenario 3: Core network elements send radio frequency map data to terminal devices or network devices. For example, core network elements can send radio frequency map data directly to terminal devices via NAS signaling, or send it to network devices first, and then the network devices can forward it to terminal devices.

[0164] Figure 5 A schematic diagram of the process for transmitting radio frequency map data provided in the embodiments of this application. Figure 3 .like Figure 5 As shown, the process may include:

[0165] S501a, Data request message #2 between UE and CN.

[0166] Among them, data request message #2 is used by the UE to request data related to the radio frequency map from the CN. For example, the UE directly sends data request message #2 to the CN, which is the transparent transmission mode.

[0167] The UE can interact with network elements such as SF, SMF, and LMF in the CN through NAS layer signaling without limitation.

[0168] S502a, CN sends radio frequency map data to UE.

[0169] If a UE requests radio frequency (RF) map data for a specific location or area, the RF map data is used to indicate the RF map data for that specific location or area, along with the corresponding channel information, to assist in the communication process. For example, the UE uses the RF map data to determine pilot allocation and measurement methods to reduce pilot overhead, or the UE uses the RF map data to determine the approximate range of beam direction to reduce the communication overhead and latency of beam search.

[0170] like Figure 5 As shown, the process may include:

[0171] S501b, the UE and CN exchange data request messages #2 via BS.

[0172] Among them, data request message #2 is used by the UE to request data related to the radio frequency map from the CN. For example, if the UE sends data request message #2 to the BS, the BS will forward data request message #2 to the CN, which is the BS forwarding mode.

[0173] Among them, UE and BS can interact with network elements such as SF, SMF, and LMF in CN through NAS layer signaling without limitation.

[0174] S502b, CN sends radio frequency map data to BS.

[0175] S503, BS sends radio frequency map data to UE.

[0176] This interaction process enables core network elements to send radio frequency map data to terminal devices. For example, core network elements can directly send radio frequency map data to terminal devices via NAS signaling, or they can first send it to network devices, which then forward it to terminal devices.

[0177] In this communication system, by designing the NAS layer reporting and distribution process for radio frequency map data, and by having radio frequency map data simultaneously carry channel information and location information, the information / signals carried by radio frequency map data are more diverse than those carried by the positioning data supported by the current protocol. Therefore, compared with the interaction process of positioning data transmission supported by the current protocol, the application scenarios of transmitting radio frequency map data are more extensive, such as being applied to the transmission of other sensing data, thereby supporting the needs of diverse data transmission and being applicable to future communication application scenarios.

[0178] Furthermore, by leveraging the correspondence between channel and location information within the radio frequency (RF) map data, terminal or network devices can subsequently retrieve channel information corresponding to a specific location from the RF map data, thereby assisting in communication tasks. For example, by retrieving channel information corresponding to a specific location from the RF map data, a terminal device can determine the channel's direction / angle, thus reducing the pilot scanning range. In other words, the terminal device determines pilot allocation and measurement methods based on the RF map data to reduce pilot overhead. As another example, the terminal device can determine the approximate beam direction range based on the channel information in the RF map data, reducing the communication overhead and latency of beam searching. In short, RF map data can assist in communication tasks and can be applied to various communication scenarios.

[0179] The following will combine Figures 6-7 This application provides a detailed description of the interaction process between various network elements / devices in the aforementioned communication system through method embodiments. The communication method provided in this application can be applied to the aforementioned communication system and specifically to various scenarios / processes mentioned in the aforementioned communication system, which will be described in detail below.

[0180] First, we will introduce the implementation examples applicable to scenarios 1 and 2 above.

[0181] Figure 6 Flowchart of the communication method provided in the embodiments of this application Figure 1 This communication method is applicable to the aforementioned communication system and mainly involves the interaction between the first communication device and the core network elements.

[0182] like Figure 6 As shown, the flow of this communication method is as follows:

[0183] S601, the first communication device determines the radio frequency map data of the first device by receiving radio frequency map measurement signals.

[0184] The radio frequency (RF) map measurement signal can be an RF signal transmitted between a first communication device and a second communication device (i.e., the transmitting end), used to measure data related to the RF map. The first communication device can be a terminal device or a network device. If the first communication device is a terminal device, then the second communication device is a network device; conversely, if the first communication device is a network device, then the second communication device is a terminal device. In other words, the RF map measurement signal can be an RF signal transmitted between the terminal device and the network device. For example, the terminal device sends an RF map measurement signal to the network device, and the network device receives the RF map measurement signal (i.e., uplink transmission), or the network device sends an RF map measurement signal to the terminal device, and the terminal device receives the RF map measurement signal (i.e., downlink transmission).

[0185] The first device can be a terminal device, meaning that the final determined radio frequency map data is the radio frequency map data of the terminal device, or in other words, it is associated with the terminal device.

[0186] The first communication device and the first equipment can be the same device or different devices. If the first communication device is a terminal equipment, then the first equipment can be the same device as the first communication device. If the first communication device is a network equipment, then the first equipment can be a terminal equipment served by the first communication device.

[0187] In this embodiment, the radio frequency (RF) map data can be RF map data between the first device and the network device. That is, if the first communication device is a terminal device, the RF map data can be RF map data between the first device / first communication device and the second communication device. If the first communication device is a network device, the RF map data can be RF map data between the first device and the first communication device.

[0188] Radio frequency map data can also be represented in other ways, such as radio map data, which has the same data type and content as RFmap data.

[0189] S602, the first communication device sends radio frequency map data to the core network element via NAS message, and the core network element receives the radio frequency map data accordingly.

[0190] The radio frequency (RF) map data is used to indicate the channel information and location information of the first device, and the channel information and location information have a corresponding relationship. For example, the RF map data is recorded in the form of: {channel information 1, location information 1}.

[0191] The channel information of the first device can be obtained through radio frequency map measurement signals, and may include channel-related measurement data and / or channel-related estimation results. For example, the channel information may include measurement data obtained through radio frequency map measurement signals, which can be used to perform channel estimation, determine the channel estimation result, and implicitly instruct the core network element to perform channel estimation based on the measurement data. The channel estimation result can be referred to the radio frequency map estimation result information below. Alternatively, the channel information may include channel-related estimation results, i.e., directly transmitting the channel estimation result without requiring estimation by the core network element. Specifically, the channel information may include MPC information, scalar information, vector / matrix information, etc. The channel information can also be referred to the introduction of channel information in the technical terminology section above, and will not be repeated here.

[0192] Optionally, the location information includes coordinate point information and / or coordinate range information. The coordinate range information can be the location information of regions such as polygons, circles, and ellipses, for example, the location of regions such as polygons, circles, and ellipses can be represented by multiple coordinate point information.

[0193] In one possible implementation, after receiving radio frequency (RF) map data from multiple communication devices (including the first communication device), the core network element fuses the RF map data. For example, multiple terminal devices may collect RF map data from multiple areas (corresponding to multiple location information points), and the core network element then aggregates the RF map data from these multiple areas. For instance, the RF map data fused / aggregated by the core network element may contain one or more sets of channel information, each set of channel information corresponding to a location information point. For example, taking N sets of channel information (where N is a positive integer), the RF map data is recorded in the following format:

[0194] {Channel Information 1, Location Information 1}

[0195] {Channel Information 2, Location Information 2}

[0196] …

[0197] {Channel information N, Location information N}

[0198] The network elements that receive radio frequency map data and those that fuse / aggregate radio frequency map data can be different core network elements, without limitation.

[0199] The core network elements can be referred to in the description of the communication system section above, and will not be repeated here.

[0200] Thus, by designing a process for terminal devices or network devices to transmit radio frequency map data to core network elements via NAS messages, and by having radio frequency map data simultaneously carry channel information and location information, radio frequency map data carries more diverse information / signals than the positioning data supported by current protocols. Therefore, compared to the interaction process of positioning data transmission supported by current protocols, the application scenarios for transmitting radio frequency map data are more extensive, such as being applicable to the transmission of other sensing data, thereby supporting the needs of diverse data transmission and being applicable to future communication application scenarios.

[0201] Furthermore, by leveraging the correspondence between channel and location information within the radio frequency (RF) map data, terminal or network devices can subsequently retrieve channel information corresponding to a specific location from the RF map data, thereby assisting in communication tasks. For example, by retrieving channel information corresponding to a specific location from the RF map data, a terminal device can determine the channel's direction / angle, thus reducing the pilot scanning range. In other words, the terminal device determines pilot allocation and measurement methods based on the RF map data to reduce pilot overhead. As another example, the terminal device can determine the approximate beam direction range based on the channel information in the RF map data, reducing the communication overhead and latency of beam searching. In short, RF map data can assist in communication tasks and can be applied to various communication scenarios.

[0202] The S602 will be described in detail below.

[0203] Radio frequency map data can be carried in NAS messages, such as RF map data information elements (ProvideRFMapInformation), or in other implementable NAS information elements, without limitation.

[0204] In one possible implementation, radio frequency map data may include radio frequency map measurement information and / or radio frequency map estimation results.

[0205] The radio frequency (RF) map measurement information can be measurement data determined by the first communication device based on the RF map measurement signal, such as received signals, channel vectors / matrices, etc. The RF map measurement information can include the RF map measurement signal and the location information of the first device. The RF map measurement information can be carried in NAS cells, such as RF map measurement information cells (RFMapMeasurementInformation) or RF map measurement information instance cells (rfMapMeasurementInformationInstances), for transmitting the RF map measurement information.

[0206] The radio frequency (RF) map estimation result information can be the result estimated by the first communication device based on RF map measurement information, and may include the channel information and location information of the first device. The RF map estimation result information can be carried in NAS (Network Addressable) cells, such as RF map information cells (RFMapInformation) or RF map information instance cells (rfMapInformationInstances), for transmitting the RF map estimation result information.

[0207] If the radio frequency (RF) map data includes RF map measurement information, it implicitly instructs the core network elements to process the RF map measurement information, such as performing channel estimation, which can save computational overhead on the first communication device. If the RF map data includes RF map estimation results, it can save computational overhead on the core network elements.

[0208] Optionally, the radio frequency map data may also include indication information, which is used to indicate the data format of radio frequency map measurement information and / or radio frequency map estimation results.

[0209] The indication information can be contained in the radio frequency map data format indication element (rfMapType), or it can be contained in other implementable NAS elements, without limitation. The data format can be, for example, MPC information, scalar information, vector information, matrix information, etc. Sending the indication information to the core network element through the first communication device enables the core network element to receive and process radio frequency map data more conveniently.

[0210] Wherein, when the radio frequency map data includes radio frequency map measurement information, the indication information is used to indicate that the data format of the radio frequency map measurement information is vector information and / or matrix information. For example, when the first communication device sends radio frequency map measurement information to the core network element, the radio frequency map data format indication element selects vector information and / or matrix information format.

[0211] When the radio frequency (RF) map data includes RF map estimation result information, the indication information used to indicate that the RF map estimation result information has a data format of at least one of the following: scalar information, vector information, or matrix information. Specifically, when the RF map data includes RF map estimation result information, the matrix information may include MPC information. For example, when the first communication device sends RF map measurement information to a core network element, the RF map data format indication element selects at least one of scalar information, vector information, or matrix information.

[0212] Of course, optionally, the first communication device may not include radio frequency map measurement information and radio frequency map estimation results information when sending radio frequency map data. That is, it may only send the format during the handshake phase and not carry specific radio frequency map related data.

[0213] Optionally, the RF map estimation result information may include MPC information, and the matrix information in the RF map estimation result information may include MPC information. The MPC information may include L-path parameters, each of which includes at least one of the following: power, phase, time delay, AOA, or AOD, where L is an integer greater than or equal to 1. Examples of MPC information can be found in the description of the technical terminology section above, and will not be repeated here.

[0214] For example, when radio frequency map data includes radio frequency map estimation results, the radio frequency map data has different formats depending on the selection of the radio frequency map data format indicator (rfMapType) information element, as shown in the following example:

[0215] Scalar information: a single number, such as CQI, RI, RSRP, etc. in broadband mode;

[0216] Vector / matrix information: contains multiple numbers, such as CQI, RI, RSRP for subband modes, as well as CIR, PDP, etc.

[0217] The matrix information can include MPC information: multipath parameters, such as the number of paths L, and parameters for each path, such as power, phase, time delay, AOA, and AOD. Specific examples of MPC information are shown in Table 1, and will not be elaborated further.

[0218] Optionally, the radio frequency (RF) map data may also include timestamps, which are used to represent the time information of acquiring RF map measurement signals. Both RF map measurement information and RF map estimation results can include timestamps. Timestamps can be carried in timestamp cells, i.e., reusing existing protocol formats; alternatively, they can be carried in newly added cells, without limitation.

[0219] Optionally, the radio frequency map data may also include the identifier of the cell where the first device is located and / or the identifier of the network device serving the first device, so that the radio frequency map data is associated with a specific cell and / or a specific network device. The core network element merges / aggregates the radio frequency map data sent by multiple devices, and the terminal can then query the core network element for the radio frequency map data corresponding to a specific cell and / or a specific network device to assist in communication tasks.

[0220] Optionally, the radio frequency map data may also include an identifier of the current interaction process, such as a reused interaction identifier (transaction identity, transaction ID), or a newly added radio frequency map protocol interaction identifier (RFmap protocol transaction ID, RMP-transaction ID).

[0221] In one possible implementation, the communication method may further include: a first communication device receiving a data request message from a core network element, the data request message being used to request information related to the radio frequency map.

[0222] The first communication device sends radio frequency map data to the core network element via NAS message based on the data request message.

[0223] Optionally, when the data request message is used to request measurement information related to the radio frequency (RF) map, the RF map data includes the RF map measurement information. When the data request message is used to request an RF map estimation result determined based on the measurement information, the RF map data includes the RF map estimation result information.

[0224] The first communication device determines whether to send intermediate information (i.e., radio frequency map measurement information) or result information (i.e., radio frequency map estimation result information) based on the content requested in the data request message, or both. This improves the flexibility of the transmitted content and the accuracy of the interactive content, and can accurately transmit data that meets the requirements of the core network elements.

[0225] For example, if a data request message requests measurement information related to an RF map, the RF map data element includes RF map measurement information elements. If a data request message requests an RF map estimation result determined based on the measurement information, the RF map data element includes RF map information elements. If a data request message requests both measurement information related to an RF map and an RF map estimation result determined based on the measurement information, the RF map data element includes both RF map measurement information elements and RF map information elements.

[0226] Furthermore, if radio frequency map measurement information is sent, it implicitly instructs the core network elements to estimate the radio frequency map, and the core network elements determine the radio frequency map estimation result information.

[0227] The specific format (signaling content) of each NAS cell is described below.

[0228] For example, the specific format of the NAS cell corresponding to radio frequency map data, i.e., the RF map data cell, is as follows:

[0229]

[0230]

[0231] The first communication device can carry the reporting or transmission of a single set of radio frequency map data through RF map measurement information cells and / or RF map information cells, or carry the reporting or transmission of a single set or multiple sets of radio frequency map data through RF map measurement information instance cells (rfMapMeasurementInformationInstances) and RF map information instance cells (rfMapInformationInstances).

[0232] For example, the specific format of the NAS cell corresponding to the RF map measurement information, i.e., the RF map measurement information cell, is as follows:

[0233]

[0234] The location information of the first device indicated by the radio frequency map measurement information can be carried in RF map location cells (RFMapLocation), which may include coordinate point information and / or coordinate range information. Coordinate point information can reuse existing protocol formats, i.e., elliptic point cells. Coordinate range information can be represented by location range cells (LocationRange) to represent a polygonal region (i.e., represented by multiple coordinate points), or by circular range cells (CircleRange) to represent a circular region, or by elliptic range cells (EllipsoidRange) to represent an elliptical region. Of course, coordinate point information and coordinate range information can also be included in newly added cells, without limitation.

[0235] For example, the specific format of the NAS information element corresponding to the radio frequency map estimation result information, i.e., the RF map information element, is as follows:

[0236]

[0237]

[0238] Among them, the radio frequency map data element (RFMapData) carries specific radio frequency map-related information, such as the channel information of the first device.

[0239] The following sections describe the implementation methods of the interaction process when the first communication device is a terminal device and when the first communication device is a network device.

[0240] Corresponding to scenario 1 above, when the first communication device is a terminal device, the terminal device sends radio frequency map data to the core network element through NAS messages.

[0241] In one possible implementation, the first communication device (i.e., the terminal device, which may be the first device) can send radio frequency map data through LPP messages, such as RF map data information elements as a subclass of location information information elements (ProvideLocationInformation), and send radio frequency map data through RF map data information elements in LPP messages.

[0242] For example, the specific format of an LPP message containing RF map data elements is shown below:

[0243]

[0244] As can be seen, the RF map data information element (provideRFMapInformation / ProvideRFMapInformation), as a subclass of the location information element (ProvideLocationInformation), is carried in the LPP message. The specific information carried by the aforementioned RF map data information element (provideRFMapInformation / ProvideRFMapInformation) can be determined based on the content requested in the data request message sent by the core network element; it can be an RF map measurement information element (RFMapMeasurementInformation) and / or an RF map information element (RFMapInformation).

[0245] In another possible implementation, a new message, such as an RMP message (RF map protocol-message), is defined, and RF map data cells are encapsulated within the RMP message. Thus, the first communication device can transmit radio frequency map data via the RF map data cells in the RMP message.

[0246] For example, the specific format of an RMP message containing RF map data elements is shown below:

[0247]

[0248]

[0249] As can be seen, the RF map data information element (provideRFMapInformation / ProvideRFMapInformation) is encapsulated within the RMP message body (RMP-MessageBody) element of the RMP message. The specific information carried by the aforementioned RF map data information element (provideRFMapInformation / ProvideRFMapInformation) can be determined based on the data request content; it can be an RF map measurement information element (RFMapMeasurementInformation) and / or an RF map information element (RFMapInformation).

[0250] Corresponding to scenario 2 above, when the first communication device is a network device, the network device sends radio frequency map data to the core network element through NAS messages.

[0251] In one possible implementation, the first communication device (i.e., a network device that can serve the first device) can send radio frequency map data, such as RF map data cells encapsulated in the measurement response message of the NRPPa protocol, via the measurement response message of the NRPPa protocol.

[0252] For example, the specific format of a measurement response message containing RF map data elements is shown below:

[0253]

[0254] Similarly, the RF map data information element (ProvideRFMapInformation) mentioned above can determine the specific information carried based on the content requested in the data request message sent by the core network element. It can be RF map measurement information element (RFMapMeasurementInformation) and / or RF map information element (RFMapInformation).

[0255] The following describes an embodiment applicable to scenario 3 described above.

[0256] Figure 7 Flowchart of the communication method provided in the embodiments of this application Figure 2 This communication method is applicable to the aforementioned communication system and mainly involves the interaction between the first communication device and core network elements. It is understood that terms such as "first" and "second" can be expressions at the granularity of specific embodiments, such as... Figure 7 The "first communication device" in the corresponding embodiment and Figure 6The "first communication device" in the corresponding embodiments can be the same communication device or different communication devices.

[0257] like Figure 7 As shown, the flow of this communication method is as follows:

[0258] S701, the first communication device sends a data request message to the core network element, and the core network element receives the data request message accordingly.

[0259] The data request message is used to request data related to the radio frequency map. Since the radio frequency map data contains the correspondence between location information and channel information, after the core network element merges / aggregates the radio frequency map data (including the radio frequency map data of the first device) sent by multiple communication devices (including the first communication device), the first communication device requests data related to the radio frequency map based on its location information, such as requesting channel information corresponding to location information #1. Alternatively, the first communication device may request radio frequency map-related data corresponding to a specific cell and / or a specific network device from the core network element, such as carrying the cell ID and / or base station ID in the data request message.

[0260] S702, the core network element sends radio frequency map data to the first communication device via NAS message, and the first communication device receives the radio frequency map data accordingly.

[0261] Among them, radio frequency map data is used to indicate the channel information and location information of the first device, and the channel information and location information have a corresponding relationship.

[0262] Optionally, the radio frequency (RF) map data may include RF map estimation result information, which may include the channel information and location information of the first device. That is, when the core network element sends RF map data to the first communication device, it sends the RF map estimation result information, i.e., the result data, instead of sending intermediate data (such as the RF map measurement information mentioned above). This saves computational overhead on the first communication device.

[0263] Optionally, the location information may be coordinate point information and / or coordinate range information. The channel information and location information of the first device can also be found in the descriptions of the channel information and location information of the first device in S601 to S602, and will not be repeated here.

[0264] Thus, by designing a NAS layer delivery process for RF map data, and considering that RF map data simultaneously carries both channel and location information, the information / signals carried by RF map data are more diverse than those supported by current positioning data protocols. Therefore, compared to the interaction process of current positioning data transmission protocols, this method of transmitting RF map data has a wider range of applications, such as the transmission of other sensing data, supporting diverse data transmission needs and applicable to future communication applications. Furthermore, by leveraging the correspondence between channel and location information contained in the RF map data, terminal devices or network devices can obtain channel information corresponding to a specific location from the RF map data to assist in communication tasks, making it applicable to various communication scenarios.

[0265] The first communication device can be a terminal device or a network device. The terminal device obtains radio frequency map data from the core network elements to assist the communication process. The network device obtains (preloads) radio frequency map data from the core network elements, so that it can subsequently choose to send the radio frequency map data to the terminal device at a specific time, or when the terminal device requests radio frequency map data from the network device.

[0266] The following describes the case where the first communication device is the terminal equipment, S701.

[0267] The first communication device (i.e., the terminal device) can reuse existing protocols to send data request messages, such as the RequestAssistanceData message in the LPP protocol. That is, the RequestAssistanceData message can be supplemented with the request information for auxiliary data related to the radio frequency map (RFMap-RequestAssistanceData). Of course, it can also send data request messages by adding new protocols or signaling, without limitation.

[0268] For example, the specific format of the RequestAssistanceData message is as follows:

[0269]

[0270]

[0271] The RequestAssistanceData message contains one or more RF map location cells (RFMapLocation), which can request one or more sets of radio frequency map data. That is, each RF map location cell corresponds to one set of radio frequency map data. In other words, because the radio frequency map data contains the correspondence between location information and channel information, the first communication device can request the radio frequency map data #1 corresponding to location information #1 through the location information indicated by one RF map location cell, such as location information #1. The first communication device can also request the radio frequency map data #1, radio frequency map data #2, and radio frequency map data #3 corresponding to location information #1, location information #2, and location information #3, respectively, through the location information indicated by multiple RF map location cells, such as location information #1, location information #2, and location information #3.

[0272] The following describes two scenarios where the first communication device in S702 is a terminal device.

[0273] Scenario 1: The core network element directly sends the radio frequency map data to the first communication device.

[0274] Core network elements send radio frequency map data to terminal devices via NAS messages. For example, core network elements send radio frequency map data to the first communication device via the Provide Assistance Data message in the LPP protocol.

[0275] For example, the specific format of the ProvideAssistanceData message in the LPP protocol is as follows:

[0276]

[0277] In this scenario, radio frequency (RF) map data can be carried in RF map data cells (ProvideRFMapInformation). These RF map data cells carry one or more sets of RF map estimation results, such as RF map information cells (RFMapInformation). In other words, no measurement information related to the RF map (such as the RF map measurement information mentioned above) will be sent.

[0278] Scenario 2: Core network elements send radio frequency map data to the first communication device through the second communication device.

[0279] The second communication device can be a network device. The core network element first sends the radio frequency map data to the network device, which then forwards it to the first communication device, i.e., the terminal device.

[0280] Similar to Case 1, core network elements can send radio frequency map data to the second communication device through the Provide Assistance Data message in the LPP protocol. The message format is the same as in Case 1.

[0281] The second communication device transmits radio frequency map data via radio resource control (RRC) signaling, such as broadcast or dedicated signaling. For example, when transmitting radio frequency map data via broadcast, the second communication device can place the radio frequency map data in a system information block (SIB), such as adding a new SIB RAN data signaling (SIBrandata) for RAN data in the SIB, or reusing an existing protocol, without limitation. As another example, when the second communication device transmits radio frequency map data via dedicated signaling for a specific terminal device (i.e., the first communication device), the radio frequency map data can be placed in an RRC reconfiguration message (RRCReconfiguration).

[0282] For example, the specific format of SIB RAN data signaling (SIBrandata) is as follows:

[0283]

[0284] Similar to scenario 1, radio frequency (RF) map data can be carried in RF map data cells (ProvideRFMapInformation). These RF map data cells carry one or more sets of RF map estimation results, such as RF map information cells (RFMapInformation). In other words, no measurement information related to the RF map (such as the RF map measurement information mentioned above) will be sent.

[0285] Optionally, the radio frequency map data may also include indication information, which is used to indicate the data format of the radio frequency map estimation results.

[0286] Optionally, the MPC information includes L-path parameters, each of which includes at least one of the following: power, phase, time delay, angle of arrival (AOA) or angle of departure (AOD), where L is an integer greater than or equal to 1.

[0287] Optionally, the radio frequency map data includes a timestamp, which is used to indicate the time information for acquiring the radio frequency map measurement signal. The radio frequency map data is determined based on the radio frequency map measurement signal.

[0288] Optionally, the radio frequency map data may also include the identifier of the cell where the first device is located and / or the identifier of the network device serving the first device.

[0289] The specific implementations of S701 to S702 can also refer to the specific implementations of S601 to S602, which will not be elaborated here.

[0290] The various implementation methods in this application embodiment can be used in combination, and the combination form of the various implementation methods in the above embodiments is not limited.

[0291] The above combination Figures 6-7 The methods provided in the embodiments of this application are described in detail below. Figures 8-9 This document describes in detail the communication apparatus used to perform the communication method provided in the embodiments of this application.

[0292] Figure 8 This is a schematic diagram of the structure of the communication device provided in the embodiments of this application. Figure 1 For example, such as Figure 8 As shown, the communication device 800 includes a transceiver module 801 and a processing module 802. For ease of explanation, Figure 8 Only the main components of the communication device are shown.

[0293] The transceiver module 801 is used to perform the above. Figure 6 The sending and receiving functions of the method shown are executed by the processing module 802. Figure 6 The method shown includes functions other than sending and receiving.

[0294] Optionally, the transceiver module 801 may include a transmitting module ( Figure 8 (not shown in the image) and receiving module ( Figure 8 (Not shown in the diagram). The transmitting module implements the transmitting function of the communication device 800, and the receiving module implements the receiving function of the communication device 800.

[0295] Optionally, the communication device 800 may also include a storage module. Figure 8 (Not shown in the image), the storage module stores programs or instructions. When the processing module 802 executes the program or instructions, the communication device 800 can perform the above-described method. Figure 6 The method shown describes the functions of the terminal device or network device.

[0296] It is understood that the communication device 800 may be a terminal device or a network device, or a chip (system) or other component or assembly that can be disposed in a terminal device or a network device, or a device that includes a terminal device or a network device. This application does not limit this.

[0297] In addition, the technical effects of the communication device 800 can be referenced. Figure 6 The technical effects of the communication method shown will not be elaborated here.

[0298] Figure 9 Schematic diagram of the communication device provided in the embodiments of this application Figure 2 For example, the communication device can be a terminal device, or a chip (system) or other component or assembly that can be disposed in the terminal device. Figure 9 As shown, the communication device 900 may include a processor 901. Optionally, the communication device 900 may also include a memory 902 and / or a transceiver 903. The processor 901 is coupled to the memory 902 and / or the transceiver 903, for example, through a communication bus, an on-chip interface, or other communication lines. Optionally, the memory 902 may be integrated with the processor 901.

[0299] The following is combined with Figure 9 A detailed description of each component of the communication device 900 is provided below:

[0300] The processor 901 is the control center of the communication device 900. It can be a single processor or a collective term for multiple processing elements. For example, the processor 901 can be one or more central processing units (CPUs), application-specific integrated circuits (ASICs), or one or more integrated circuits configured to implement the embodiments of this application, such as one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs).

[0301] Optionally, the processor 901 can perform various functions of the communication device 900 by running or executing software programs stored in the memory 902 and calling data stored in the memory 902, such as performing the aforementioned functions. Figure 6 The communication method shown.

[0302] In a specific implementation, as one example, the processor 901 may include one or more CPUs, for example... Figure 9 CPU0 and CPU1 are shown in the diagram.

[0303] In a specific implementation, as one example, the communication device 900 may also include multiple processors, for example... Figure 9The processors 901 and 904 are shown. Each of these processors can be a single-core processor or a multi-core processor. Here, "processor" can refer to one or more devices, circuits, and / or processing cores used to process data (e.g., computer program instructions).

[0304] The memory 902 is used to store the software program that executes the solution of this application, and is controlled by the processor 901 to execute it. The specific implementation method can be referred to the above method embodiment, and will not be repeated here.

[0305] Optionally, the memory 902 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. The memory 902 may be integrated with the processor 901 or exist independently, and may be connected via the interface circuit of the communication device 900. Figure 9 (Not shown in the image) is coupled to the processor 901, but this embodiment does not specifically limit this.

[0306] Transceiver 903 is used for communication with other communication devices. For example, if communication device 900 is a terminal device, transceiver 903 can be used to communicate with a network device or with another terminal device. As another example, if communication device 900 is a network device, transceiver 903 can be used to communicate with a terminal device or with another network device.

[0307] Alternatively, transceiver 903 may include a receiver and a transmitter. Figure 9 (Not shown separately). The receiver is used to implement the receiving function, and the transmitter is used to implement the sending function.

[0308] Optionally, the transceiver 903 can be integrated with the processor 901, or it can exist independently and be connected via the interface circuit of the communication device 900. Figure 9(Not shown in the image) is coupled to the processor 901, but this embodiment does not specifically limit this.

[0309] Understandable, Figure 9 The structure of the communication device 900 shown does not constitute a limitation on the communication device. Actual communication devices may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0310] Furthermore, the technical effects of the communication device 900 can be referred to the technical effects of the method described in the above method embodiments, and will not be repeated here.

[0311] It should be understood that the processor in the embodiments of this application can be a central processing unit (CPU), or it can be other general-purpose processors, DSPs, ASICs, FPGAs, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor, etc.

[0312] It should also be understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Non-volatile memory can be ROM, programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), EEPROM, or flash memory. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0313] The above embodiments can be implemented, in whole or in part, by software, hardware (such as circuits), firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive.

[0314] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. A and B can be singular or plural. Additionally, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects, but it can also represent an "and / or" relationship. Please refer to the context for a more accurate understanding.

[0315] In this application, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0316] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0317] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0318] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0319] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0320] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0321] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0322] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes all the various possible memories described above.

Claims

1. A communication method characterized by comprising: The method comprises: determining radio frequency map data of the first device by receiving a radio frequency map measurement signal; sending the radio frequency map data to a core network element through a non-access stratum (NAS) message; wherein the radio frequency map data is used to indicate channel information of the first device and position information of the first device, and the channel information and the position information have a corresponding relationship.

2. The method of claim 1, wherein, The radio frequency map data comprises radio frequency map measurement information and / or radio frequency map estimation result information.

3. The method of claim 2, wherein, The radio frequency map measurement information comprises the radio frequency map measurement signal and the position information of the first device, and the radio frequency map estimation result information comprises the channel information of the first device and the position information of the first device.

4. The method according to claim 2 or 3, characterized in that, The radio frequency map data further comprises indication information used to indicate a data format of the radio frequency map measurement information and / or the radio frequency map estimation result information.

5. The method of claim 4, wherein, The radio frequency map estimation result information comprises multipath component (MPC) information, and the MPC information comprises L-path parameters, each of which comprises at least one of the following: power, phase, time delay, angle of arrival (AOA) or angle of departure (AOD), wherein L is an integer greater than or equal to 1.

6. The method according to any one of claims 1 to 5, characterized in that, The radio frequency map data comprises a timestamp used to represent time information of collecting the radio frequency map measurement signal.

7. The method according to any one of claims 1 to 6, characterized in that, The method further comprises: receiving a data request message from the core network element, the data request message being used to request information related to a radio frequency map.

8. The method of claim 7, wherein, In a case where the data request message is used to request measurement information related to a radio frequency map, the radio frequency map data comprises the radio frequency map measurement information; in a case where the data request message is used to request a radio frequency map estimation result determined according to the measurement information, the radio frequency map data comprises the radio frequency map estimation result information.

9. The method according to any one of claims 1 to 8, characterized in that, The position information is coordinate point information and / or coordinate range information.

10. The method according to any one of claims 1 to 9, characterized in that, The radio frequency map data further comprises an identity of a cell where the first device is located and / or an identity of a network device serving the first device.

11. A communication method characterized by comprising: The method comprises: sending a data request message to a core network element, the data request message being used to request data related to a radio frequency map; receiving radio frequency map data from the core network element through a non-access stratum (NAS) message; wherein the radio frequency map data is used to indicate channel information of the first device and position information of the first device, and the channel information and the position information have a corresponding relationship.

12. The method of claim 11, wherein, The radio frequency map data comprises radio frequency map estimation result information.

13. The method of claim 12, wherein, The radio frequency map estimation result information comprises the channel information of the first device and the position information of the first device.

14. The method according to any one of claims 11 to 13, characterized in that, The radio frequency map data further comprises indication information used to indicate a data format of the radio frequency map estimation result information.

15. The method according to any one of claims 11 to 14, characterized in that, The MPC information comprises L-path parameters, each of which comprises at least one of the following: power, phase, time delay, angle of arrival (AOA) or angle of departure (AOD), wherein L is an integer greater than or equal to 1.

16. The method according to any one of claims 11 to 15, characterized in that, The radio frequency map data comprises a time stamp for representing time information of collecting a radio frequency map measurement signal, the radio frequency map data being determined based on the radio frequency map measurement signal.

17. The method according to any one of claims 11 to 16, characterized in that, The position information is coordinate point information and / or coordinate range information.

18. The method according to any one of claims 11 to 17, characterized in that, The radio frequency map data further comprises an identity of a cell in which the first device is located and / or an identity of a network device serving the first device.

19. A communications device, characterized by The apparatus comprises means for performing the method of any of claims 1-10, or means for performing the method of any of claims 11-18.

20. A communications device, characterized by The communication apparatus comprises a processing unit and a storage unit, the storage unit being configured to store computer instructions which, when executed by the processing unit, cause the method of any of claims 1-10 to be performed, or cause the method of any of claims 11-18 to be performed.

21. A computer-readable storage medium, characterized in that, The computer readable storage medium comprises computer programs or instructions which, when run on a computer, cause the computer to perform the method of any of claims 1-10, or cause the computer to perform the method of any of claims 11-18.

22. A computer program product, characterised in that, The computer program product comprises computer programs or instructions which, when run on a computer, cause the method of any of claims 1-10 to be performed, or cause the method of any of claims 11-18 to be performed.

Images