Information indication method and related apparatus

Abstract

Embodiments of the present application provide an information indication method and a related apparatus. The method comprises: a first device sends first information, wherein the first information indicates a channel difference between a real channel and a twin channel, and the real channel is a transmission channel of a signal between the first device and a second device. A fine-grained channel difference can be indicated at a low communication overhead, so that the accuracy of a twin channel can be determined with high precision. The method can be applied to a sensing scenario, and a first device may be a terminal device or an access network device.

Description

Information indication method and related apparatus

[0001] The present application claims priority from the Chinese patent application No. CN202411022152.1 filed on July 26, 2024, and entitled "Information indication method and related apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication, and in particular to an information indication method and related apparatus. BACKGROUND

[0003] In the process of the evolution of the 5th generation (5G) technology, the communication and perception integrated technology is considered as one of the key technologies to expand the business capabilities of the mobile communication network. The communication and perception integrated technology can also be referred to as the perception technology. The core idea of the technology is to add the perception capability on the mobile communication network to build the ability of detecting, tracking and imaging the target. The communication and perception capabilities are integrated in one network.

[0004] Based on the perception technology, a twin network can be obtained. The twin network is a simulation of the real network or a mirror image of the real network. Specifically, a communication device obtains the environment information of the real network through the perception technology, and then constructs a twin network according to the environment information and the position information of various network elements in the real network. The channel included in the twin network is referred to as a twin channel. The twin channel is a simulation of the real channel or a mirror image of the real channel.

[0005] With the evolution of communication technology, twin technology is widely used. Taking a channel fingerprint-based positioning technology as an example, the use of a twin channel is introduced. The channel fingerprint can also be referred to as a channel feature. First, a communication device obtains the position information and the channel fingerprint of each sampling point in a real network, and obtains the mapping relationship between the channel fingerprint and the position information. The mapping relationship can also be represented as {channel fingerprint, position information}. Then, the communication device trains a positioning model based on the mapping relationship between multiple channel fingerprints and position information. After the communication device obtains the positioning model, the channel fingerprint collected by a to-be-positioned point is input into the positioning model, and the position information of the to-be-positioned point can be obtained. When the channel fingerprint of the twin channel is applied to train the positioning model, the environment information of the real network can be used to construct a twin network, and the channel fingerprint corresponding to each sampling point in the twin network can be obtained based on the twin channel included in the twin network. Therefore, it is not necessary to actually collect the channel fingerprint of each sampling point in the real world, and the collection cost of the channel fingerprint is reduced. Based on the twin network, the channel fingerprint of each sampling point and the position information of the sampling point are sampled, and the mapping relationship between multiple channel fingerprints and position information can be determined. After the positioning model is trained based on the mapping relationship between multiple channel fingerprints and position information of the twin network, the channel fingerprint measured in the real network is input into the positioning model, and the positioning model can output the position information corresponding to the channel fingerprint. Therefore, when the channel fingerprint of the twin channel is applied to train the positioning model, the cost can be effectively saved because it is not necessary to collect the channel fingerprint of the real channel.

[0006] However, the real network environment is often dynamically changing. For example, a perceived object can have different positions or sizes at different times, and accordingly, the real channel included in the real network is also dynamically changing. With the change of the real network environment, the twin network can have a large difference from the real network. Further, the channel fingerprint of the twin channel has a large difference from the channel fingerprint of the real channel. The position information based on the twin channel has a difference from the position information based on the real channel, which affects the positioning accuracy of the positioning model.

[0007] In summary, how to improve the accuracy of the twin channel becomes a technical problem to be solved at present. SUMMARY

[0008] Embodiments of the present application provide an information indication method and related apparatus. A first device reports channel differences between a real channel and a twin channel, thereby improving the accuracy of the twin channel.

[0009] In a first aspect, embodiments of the present application provide an information indication method. The method is applied to a first device.

[0010] In a possible implementation, the first device is a terminal device, which can be the terminal device itself, or a device or apparatus with a chip, or a device or apparatus integrated with a circuit, or a chip, chip system, functional module, control unit, circuit, processor, or integrated circuit in the foregoing devices or apparatus, and the like, without any limitation in particular.

[0011] In another possible implementation, the first device is an access network device, which can be the access network device itself, or a device or apparatus with a chip, or a device or apparatus integrated with a circuit, or a chip, chip system, module, control unit, circuit, or processor in the foregoing devices or apparatus, or a centralized unit (CU) and / or a distributed unit (DU), without any limitation in particular.

[0012] The method comprises: a first device sending first information, the first information indicating a channel difference between a real channel and a twin channel, the real channel being a transmission channel of a signal between the first device and a second device, and the twin channel being a simulated channel of the real channel in channel environment information.

[0013] In the foregoing technical solution, the first device reports the first information, which indicates the channel difference between the real channel and the twin channel, compared with a manner in which the first device reports channel characteristics of the real channel, the reporting overhead of the first device can be reduced. Furthermore, compared with the first device reporting the channel characteristics of the real channel, the first device reporting the channel difference between the real channel and the twin channel can report channel characteristics of a finer granularity under the premise of the same or lower reporting overhead. Since the channel characteristics of the finer granularity are supported, the accuracy of the twin channel can be improved based on the channel characteristics of the finer granularity. For example, a positioning model is generated based on the twin channel with high accuracy, which can effectively improve the positioning accuracy of the positioning model.

[0014] In a possible implementation of the first aspect, the measurement signal includes one or more of the following: a channel state information-reference signal (CSI-RS), a positioning reference signal (PRS), a sounding reference signal (SRS), a phase tracking reference signal (PTRS), a sensing signal, or a synchronization signal / physical broadcast channel block (SSB), or a demodulation reference signal (DMRS), and the like.

[0015] In a possible implementation of the first aspect, the method further includes: receiving second information, the second information being used for configuring the first information reported by the first device, and the second information including one or more of the following: a reporting period of the first information; time domain resources used for reporting the first information; first indication information, the first indication information being used for indicating a type of the first information that needs to be reported by the first device, the type of the first information including one or more of the following: a difference value in a time domain between the real channel and the twin channel, a difference value in a frequency domain between the real channel and the twin channel, or a difference value between a real path and a twin path, the real path being one or more signal transmission paths included in the real channel, and the twin path being one or more signal transmission paths included in the twin channel; second indication information, the second indication information being used for indicating a reporting trigger condition of the first information; or third indication information, the third indication information being used for indicating a measurement signal on which the first information is based.

[0016] In the technical solution, the core network device can send the second information to the first device, and the first device reports the first information in response to the second information, thereby avoiding the first device from reporting the first information autonomously in the case that the core network device does not need the first information, and reducing the power consumption and communication overhead of the first device. Further, the second information is used to configure the first information reported by the first device. The first device determines how to report the first information and the type of the first information to be reported according to the second information, so that the first device reports the first information that is closer to the service requirement based on the second information, and the detection accuracy of detecting the real channel and the twin channel is improved. The first device avoids reporting the channel difference that is not needed by the core network device, or avoids reporting the first information on the inappropriate time domain resource, or avoids reporting the channel difference that does not match the service requirement, thereby reducing the communication overhead.

[0017] In combination with the first aspect, in a possible implementation manner of the first aspect, the method further includes: the first device receiving third information from the second device, the third information including: a signal transmission power of the measurement signal; or a precoding matrix of the measurement signal.

[0018] In the technical solution, the second device can further send the third information to the first device, so that the first device determines the related parameters of the measurement signal of the twin channel based on the third information, ensures that the related parameters of the measurement signal of the twin channel match the related parameters of the real channel, and makes the first information more accurately reflect the channel difference between the real channel and the twin channel.

[0019] In combination with the first aspect, in a possible implementation manner of the first aspect, the method further includes: sending fourth information, the fourth information being used to indicate that the first device supports acquiring the twin channel or the first device has the capability of acquiring the twin channel.

[0020] In the technical solution, the first device can further report the fourth information, so that the core network device issues a configuration to the first device that supports the capability of acquiring the twin channel, saves the communication overhead, and improves the implementation flexibility of the solution.

[0021] In the second aspect, the embodiments of the present application propose an information indication method, which is applied to a core network device. The core network device can be the core network device itself, or a device or apparatus with a chip, or a device or apparatus integrated with a circuit, or a chip, a chip system, a functional module, a control unit, a circuit, a processor, or an integrated circuit in the foregoing devices or apparatus, without limitation in the present application.

[0022] For example, the core network device can be a network element responsible for sensing measurement configuration and / or sensing result receiving. For example, a sensing management function, or a positioning management function, etc. The sensing management function has various implementation manners. For example, the sensing management function is a sensing network element located at the core network side. The sensing network element can be a standalone sensing network element, or can be collocated with a session management function. For another example, the sensing management function is a sensing unit collocated with an access network device as a module of the access network device.

[0023] The method comprises: the core network device sending second information to the first device, the second information being used for configuring the first information reported by the first device; and the core network device receiving the first information from the first device, the first information indicating a channel difference between a real channel and a twin channel, the real channel being a transmission channel of a signal between the first device and the second device, and the twin channel being a simulated channel of the real channel in channel environment information.

[0024] In the above technical solution, the first device reports the first information indicating the channel difference between the real channel and the twin channel. Compared with the manner that the first device reports the channel characteristics of the real channel, the first device can reduce the reporting overhead. Furthermore, compared with the first device reporting the channel characteristics of the real channel, the first device reporting the channel difference between the real channel and the twin channel can report channel characteristics of a finer granularity under the premise of the same or lower reporting overhead. Thus, under lower communication overhead, the core network device can accurately compare the difference between the twin channel and the real channel based on the first information of the finer granularity, so as to screen the twin channel with high accuracy compared with the real channel. This ensures that various twin services are carried out using the twin channel with high accuracy, such as generating a positioning model based on the twin channel with high accuracy, and effectively improving the positioning accuracy of the positioning model.

[0025] In combination with the second aspect, in a possible implementation manner of the second aspect, the second information comprises specific information. For details, refer to the description of the first aspect.

[0026] In combination with the second aspect, in a possible implementation manner of the second aspect, the method further comprises: receiving fourth information from the first device, the fourth information being used for indicating that the first device supports acquiring the twin channel or the first device has the capability of acquiring the twin channel.

[0027] In the above technical solution, the first device can further report the fourth information, so that the core network device issues a configuration to the first device supporting the capability of acquiring the twin channel, thereby saving communication overhead and improving the implementation flexibility of the solution.

[0028] With reference to the second aspect, in a possible implementation manner of the second aspect, the method further includes: sending fifth information to the second device, the fifth information being used for configuring the measurement signal.

[0029] With reference to the second aspect, in a possible implementation manner of the second aspect, the core network device can determine the fifth information according to a requirement of an application (APP) and / or a requirement of a communication service.

[0030] With reference to the second aspect, in a possible implementation manner of the second aspect, the measurement signal can be one or more of the following: a channel state information-reference signal, a positioning reference signal, a sounding reference signal, a phase tracking reference signal, a sensing signal, a demodulation reference signal, or a synchronization signal / physical layer broadcast channel block.

[0031] In the above technical solution, the second device sends the related configuration of the measurement signal, which is configured by the core network device, thereby improving the implementation flexibility of the solution.

[0032] With reference to the second aspect, in a possible implementation manner of the second aspect, the fifth information further includes fourth indication information, the fourth indication information being used for instructing the second device to send third information to the first device, the third information including: signal transmission power of the measurement signal and / or a precoding matrix of the measurement signal.

[0033] With reference to the first aspect or the second aspect, in a possible implementation manner of the first aspect or the second aspect, the first information includes one or more of the following: a difference value of the real channel and the twin channel in the time domain; a difference value of the real channel and the twin channel in the frequency domain; or a difference value of a real path and a twin path, the real path being one or more signal transmission paths included in the real channel, and the twin path being one or more signal transmission paths included in the twin channel.

[0034] In the above technical solution, the first information proposed in the embodiments of the present application can indicate the difference value of the real channel and the twin channel in multiple dimensions, thereby facilitating improvement of the accuracy of the twin channel.

[0035] In a possible implementation of the first aspect or the second aspect, the difference value of the real channel and the twin channel in the time domain includes one or more of the following: a channel impulse response (CIR) difference value of the real channel and the twin channel; or a power delay profile (PDP) difference value of the real channel and the twin channel; a difference value of the real channel and the twin channel in the frequency domain includes one or more of the following: a channel frequency domain response (CFR) difference value of the real channel and the twin channel; or a CFR power difference value of the real channel and the twin channel; a difference value of the real path and the twin path includes one or more of the following: a difference value of an energy value of the real path and an energy value of the twin path; a difference value of an angle value of the real path and an angle value of the twin path; a difference value of a phase value of the real path and a phase value of the twin path; or a difference value of a time delay value of the real path and a time delay value of the twin path.

[0036] In the above technical solution, the first information proposed by the embodiments of the present application can indicate the difference value of the real channel and the twin channel in multiple dimensions. In addition, compared with the channel characteristics of the real channel reported by the first device, the difference value of each dimension included in the first information has the characteristics of fine granularity, which facilitates to improve the accuracy of the twin channel.

[0037] In a possible implementation of the first aspect or the second aspect, the twin channel is generated based on the environmental information between the first device and the second device.

[0038] In a possible implementation of the first aspect or the second aspect, the first device and the second device are different devices; or the first device and the second device are the same device.

[0039] For example, when the first device and the second device are different devices, the real channel is the transmission channel of the signal between the first device and the second device; when the first device and the second device are the same device, the real channel is the transmission channel of the signal between the first device and the obstacle and the obstacle and the first device.

[0040] In the above technical solution, the information indication method proposed by the embodiments of the present application can be applied to multiple scenarios, improving the implementation flexibility of the scheme.

[0041] In a third aspect, the embodiments of the present application propose a communication system, which includes a first device, a second device and a core network device, and the communication system includes: the second device sends a measurement signal to the first device; the first device sends first information to the core network device according to the measurement signal, the first information indicating the channel difference between the real channel and the twin channel, the real channel being the transmission channel of the signal between the first device and the second device, and the twin channel being the simulation channel of the real channel in the channel environment information.

[0042] With reference to the third aspect, in a possible implementation form of the third aspect, the communication system further comprises: the core network device sends fifth information to the second device, the fifth information being used for configuring the measurement signal; the core network device sends second information to the first device, the second information being used for configuring the first information reported by the first device; the first device receives the measurement signal; and the first device sends the first information to the core network device according to the measurement signal and the second information.

[0043] With reference to the third aspect, in a possible implementation form of the third aspect, the communication system performs the method of the first aspect and / or the second aspect, which will not be repeated here.

[0044] In the fourth aspect, the fourth aspect of the present application provides a communication apparatus, which is the first device, the apparatus comprising a transceiver module and a processing module, the constituent modules of the communication apparatus can also be used to perform the steps performed in each possible implementation form of the first aspect and achieve the corresponding technical effects, which can be referred to the first aspect and will not be repeated here.

[0045] In the fifth aspect, the fifth aspect of the present application provides a communication apparatus, which is the core network device, the apparatus comprising a transceiver module and a processing module, the constituent modules of the communication apparatus can also be used to perform the steps performed in each possible implementation form of the second aspect and achieve the corresponding technical effects, which can be referred to the second aspect and will not be repeated here.

[0046] In the sixth aspect, the sixth aspect of the present application provides a communication apparatus comprising at least one processor, the at least one processor being coupled with a memory; the memory is used to store programs or instructions; the at least one processor is used to execute the programs or instructions, so that the apparatus implements the method in any one of the possible implementation forms of any one of the preceding first aspects. Optionally, the communication apparatus can comprise the memory.

[0047] In the seventh aspect, the seventh aspect of the present application provides a communication apparatus comprising at least one logic circuit and an input-output interface; the logic circuit is used to execute the method as described in any one of the possible implementation forms of any one of the preceding first aspects.

[0048] In the eighth aspect, the eighth aspect of the present application provides a communication apparatus comprising at least one processor, the at least one processor being coupled with a memory; the memory is used to store programs or instructions; the at least one processor is used to execute the programs or instructions, so that the communication apparatus implements the method in any one of the possible implementation forms of any one of the preceding second aspects. Optionally, the communication apparatus can comprise the memory.

[0049] In a ninth aspect, the ninth aspect of the present application provides a communication apparatus, including at least one logic circuit and an input / output interface; the logic circuit is configured to perform the method in any possible implementation of the method in any of the preceding second aspects.

[0050] In a tenth aspect, the tenth aspect of the present application provides a communication system, including the first device and / or the core network device.

[0051] With reference to the tenth aspect, in a possible implementation of the tenth aspect, the communication system includes the communication apparatus in the fourth aspect and / or the communication apparatus in the fifth aspect.

[0052] In an eleventh aspect, the eleventh aspect of the present application provides a computer readable storage medium, the storage medium is configured to store one or more computer execution instructions, when the computer execution instructions are executed by a processor, the processor performs the method in any possible implementation of the method in any of the preceding first aspect and / or second aspect.

[0053] In a twelfth aspect, the twelfth aspect of the present application provides a computer program product (or computer program), when the computer program in the computer program product is executed by the processor, the processor performs the method in any possible implementation of the method in any of the preceding first aspect and / or second aspect.

[0054] In a thirteenth aspect, the thirteenth aspect of the present application provides a chip or chip system, including at least one processor, configured to support the communication apparatus to perform the method in any possible implementation of the method in any of the preceding first aspect and / or second aspect.

[0055] In a possible design, the chip or chip system can further include a memory, the memory is configured to store necessary program instructions and data of the communication apparatus. The chip system can be composed of a chip, or can include a chip and other discrete devices. Optionally, the chip system further includes an interface circuit, the interface circuit is configured to provide program instructions and / or data for the at least one processor.

[0056] The technical effects brought by any of the designs in the third aspect to the thirteenth aspect can refer to the technical effects brought by the different designs in the first aspect to the second aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0057] FIG. 1 is a schematic diagram of an architecture of a communication system 1000 to which embodiments of the present application are applied;

[0058] FIG. 2a is a schematic diagram of a communication system according to an embodiment of the present application;

[0059] Figure 2b is a schematic diagram of a communication system according to an embodiment of the application;

[0060] Figure 3a is a schematic diagram of a sensing area;

[0061] Figure 3b is a schematic diagram of a signal transmission path;

[0062] Figure 4a is a schematic diagram of a single station sensing scenario;

[0063] Figure 4b is a schematic diagram of a two station sensing scenario;

[0064] Figure 4c is a schematic diagram of a sensing scenario according to an embodiment of the application;

[0065] Figure 4d is a schematic diagram of a further sensing scenario according to an embodiment of the application;

[0066] Figure 5 is a schematic diagram of a channel fingerprint based positioning technique;

[0067] Figure 6 is a schematic diagram of a topology of a communication system according to an embodiment of the application;

[0068] Figure 7 is a schematic diagram of an embodiment of a method of indicating information according to an embodiment of the application;

[0069] Figure 8 is a schematic diagram of an embodiment of a method of indicating information according to an embodiment of the application;

[0070] Figure 9 is a schematic diagram of a real path according to an embodiment of the application;

[0071] Figure 10 is a schematic diagram of an application scenario according to an embodiment of the application;

[0072] Figure 11 is a schematic diagram of a structure of a communication apparatus according to an embodiment of the application;

[0073] Figure 12 is a schematic diagram of a further structure of a communication apparatus according to an embodiment of the application;

[0074] Figure 13 is a schematic diagram of a further structure of a communication apparatus according to an embodiment of the application. DETAILED DESCRIPTION

[0075] Reference within this application to "one embodiment" or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. The appearances of the phrase "in one embodiment" or "in some embodiments" in various places within this specification are not necessarily all referring to the same embodiment, however, and are used to describe one or more embodiments unless otherwise indicated. The terms "comprising," "including," "having," and their variants mean "including but not limited to" unless otherwise indicated.

[0076] In the description of the application, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this article is only a description of the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone. In addition, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or the like means any combination of the items, including any combination of single or multiple items. For example, at least one of a, b, or c can mean a, b, c, a and b, a and c, b and c, or a and b and c. Where a, b, c can be single or multiple.

[0077] First, the communication system to which the embodiments of the present application relate is introduced. The present application can be applied to a long term evolution (LTE) system, a new radio (NR) system, or a future communication system (for example, 6G or the like) after 5G. Among them, the communication system includes at least one access network device and / or at least one terminal device.

[0078] FIG. 1 is a schematic diagram of the architecture of a communication system 1000 to which embodiments of the present application are applied.

[0079] As shown in FIG. 1, the communication system includes a radio access network 100 and a core network 200. Optionally, the communication system 1000 can also include an Internet 300. The radio access network 100 can include at least one access network device (which can also be understood as a kind of network device, such as 110a and 110b in FIG. 1), and can also include at least one terminal (which can also be understood as the terminal device introduced in the foregoing, such as 120a-120j in FIG. 1). In addition, the access network device (or referred to as the radio access network device) can be a macro base station (such as 110a in FIG. 1), or a micro base station or indoor station (such as 110b in FIG. 1), or a relay node or donor node, etc. It can be understood that all or part of the functions of the access network device in the present application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (such as a cloud platform). The embodiments of the present application do not limit the specific technology and specific device form adopted by the radio access network device.

[0080] For ease of description, the communication system shown in FIG. 1 is described by taking the access network device as a base station and the terminal device as a terminal as an example. It can be understood that when the communication system includes an integrated access and backhaul (IAB) network, the base station can be an IAB node. It should be noted that the base station and the access network device in the embodiments of the present application can be replaced with each other.

[0081] In the present application, the base station and the terminal can be fixed in position or movable. The base station and the terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted, or deployed on water, or deployed on aircraft, balloons and artificial satellites in the air. The embodiments of the present application do not limit the application scenarios of the base station and the terminal.

[0082] The roles of the base station and the terminal can be relative, for example, the helicopter or the unmanned aerial vehicle 120i in FIG. 1 can be configured as a mobile base station. For those terminals 120j that access the radio access network 100 through 120i, the terminal 120i is a base station. But for the base station 110a, 120i is a terminal, that is, 110a and 120i communicate through a wireless air interface protocol. Of course, 110a and 120i can also communicate through an interface protocol between base stations and base stations. At this time, relative to 110a, 120i is also a base station. Therefore, the base station and the terminal can be collectively referred to as a communication apparatus, 110a and 110b in FIG. 1 can be referred to as a communication apparatus with a base station function, and 120a-120j in FIG. 1 can be referred to as a communication apparatus with a terminal function.

[0083] The base station and the terminal, the base station and the base station, the terminal and the terminal can communicate through the licensed spectrum, or through the unlicensed spectrum, or through the licensed spectrum and the unlicensed spectrum simultaneously. The communication can be through the spectrum below 6 gigahertz (GHz), or through the spectrum above 6 GHz, or through the spectrum below 6 GHz and the spectrum above 6 GHz simultaneously. The embodiments of the present application do not limit the spectrum resources used by the wireless communication.

[0084] FIG. 2a is a schematic diagram of a communication system according to an embodiment of the present application. Referring to FIG. 2a, the communication system includes a terminal device 301, a next generation node B (gNB) 302, a next generation evolved node B (ng-eNB) 303, an access and mobility management function (AMF) 304, a location management function (LMF) 305, and a sensing management function (SMF) 306.

[0085] The terminal device 301 communicates with the access network device (such as the gNB 302 or the ng-eNB 303 in FIG. 2a) through a Uu interface. The ng-eNB 303 is an access network device in a long term evolution (LTE) communication system, and the gNB 302 is an access network device in a new radio (NR) communication system. In the communication system, the access network devices communicate with each other through an Xn interface, and the access network devices and the AMF 304 communicate with each other through an NG-C interface. The AMF 304 and the LMF 305 communicate with each other through an NL1 interface, and the AMF 304 is equivalent to a router for communication between the access network device and the LMF 305. The LMF 305 is a network element, module or component in a new radio (NR) core network that provides positioning functions for a terminal device, and the LMF 305 is used for positioning calculation of the location of the terminal device. The SMF 306 can store an environmental map and can implement reconstruction of the environmental map, and the SMF 306 interacts with the LMF 305 to exchange environmental and measurement information.

[0086] In the communication system shown in FIG. 2a, the LMF 305 and the SMF 306 are two network elements deployed separately. In actual application, the LMF 305 and the SMF 306 can also be deployed or integrated together, that is, the LMF 305 and the SMF 306 are the same network element. The specific application does not limit it. For example, as shown in FIG. 2b, the LMF 305 and the SMF 306 are deployed or integrated together to become a network element, which provides sensing function and positioning function.

[0087] The above-mentioned FIG. 2a and FIG. 2b only show an example that the communication system includes two access network devices of gNB and ng-eNB. In actual application, the communication system can include at least one access network device, and the specific application does not limit it.

[0088] In the communication system shown in FIG. 2a and FIG. 2b, the LMF is the name of the positioning management network element in the current communication system. In the future communication system, the name of the LMF can change with the evolution of the communication system. For example, the LMF can also be called positioning device, positioning center, positioning server, positioning management device, or positioning management function device. The specific application does not limit the name of the LMF. In the current communication system or the future communication system, as long as the functional network element with other names similar to the function of the LMF, the LMF in the embodiment of the application can be understood, and the information sending method and the information receiver method provided by the embodiment of the application are applicable.

[0089] In the communication system shown in FIG. 2a and FIG. 2b, the name of the SMF can change with the evolution of the communication system. As long as the functional network element with other names similar to the function of the SMF, it can be understood as the SMF of the application, and the method provided by the application is applicable. For example, the SMF can also be a communication sensing function, a positioning management function, a sensing management function entity, a sensing function network element, a sensing network element, a sensing server, a positioning server, or other names. The specific application does not limit the name of the SMF. The following embodiments mainly use the description of the SMF to introduce the execution operation of the functional network element.

[0090] The technical solutions of the present application can be applied to a cellular communication system related to the 3rd generation partnership project (3GPP). For example, a 4th generation (4G) communication system, a 5G communication system, a communication system after the 5G communication system. For example, a future communication system. For example, the 4th generation communication system can include a long term evolution (LTE) communication system. The 5th generation communication system can include a new radio (NR) communication system. The technical solutions of the present application can also be applied to a wireless fidelity (WiFi) system, a communication system supporting multiple wireless technology fusion, a device-to-device (D2D) system, or a vehicle to everything (V2X) communication system.

[0091] The terminal device, the access network device, the perception management function, and the positioning management function related to the present application are introduced as follows.

[0092] Terminal device, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), fixed wireless access (FWA), customer premise equipment (CPE), etc. The terminal device is a device including a wireless communication function (providing voice / data connectivity to users). For example, handheld devices with wireless connection function, vehicle-mounted devices, machine type communication (MTC) terminals, etc. At present, the terminal device can include: mobile phone, tablet computer, notebook computer, palm computer, mobile internet device (MID), wearable device, virtual reality (VR) device, augmented reality (AR) device, wireless terminal in industrial control, wireless terminal in self driving (e.g. unmanned aerial vehicle, vehicle), wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, or wireless terminal in smart home, etc. For example, the wireless terminal in self driving can be unmanned aerial vehicle, helicopter, or airplane, etc. For example, the wireless terminal in Internet of Vehicles can be vehicle-mounted device, whole vehicle device, vehicle-mounted module, vehicle, or ship, etc. The wireless terminal in industrial control can be camera, robot, or mechanical arm, etc. The wireless terminal in smart home can be television, air conditioner, sweeping machine, sound box, or set top box, etc. The terminal device can also be a device or module with corresponding communication function accessing the above-mentioned communication system. The terminal device is usually provided with a communication module, circuit or chip for executing corresponding communication function, and is also configured with program instructions for executing corresponding communication function.

[0093] It should be noted that the terminal device can be a device or apparatus with a chip, or a device or apparatus integrated with a circuit, or a chip, a chip system, a module or a control unit in the above-mentioned device or apparatus, and the specific application is not limited. It should be noted that in this application, when referring to a terminal device, it can refer to the terminal device itself, or a chip, functional module or integrated circuit in the terminal device that completes the method provided in this application, and the specific application is not limited. The access network device is a device deployed in the wireless access network to provide wireless communication function for the terminal device. The access network device can access the terminal device to the radio access network (RAN) node of the wireless network, which can also be called access network device, RAN entity, access node, network node, or communication device, etc.

[0094] Specifically, the access network device can be an access network device for a 3rd generation partnership project (3GPP) related cellular system. For example, a 4G communication system, or a 5G communication system, or a future communication system. The access network device can also be an access network device in an open access network (open RAN, O-RAN or ORAN) or a cloud radio access network (CRAN). Alternatively, the access network device can also be an access network device in a communication system obtained by fusing two or more of the above communication systems.

[0095] The access network device includes, but is not limited to, an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (for example, a home evolved NodeB or a home Node B, HNB), a baseband unit (BBU), an access point (AP) in a wireless fidelity (WiFi) system, a macro base station, a micro base station, a wireless relay node, a donor node, a wireless controller in a CRAN scenario, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP), and the like, and can also be an access network device in a 5G mobile communication system. For example, a next generation NodeB (gNB), a TRP or a TP in an NR system; or one or a group (including multiple antenna panels) of antenna panels of a base station in a 5G mobile communication system; or the access network device can also be a network node constituting a gNB or a transmission point. For example, a centralized unit (CU), a distributed unit (DU), a centralized unit control plane (CU-CP), a centralized unit user plane (CU-UP), or a radio unit (RU), and the like. The CU and the DU can be separately arranged or can be included in the same network element, for example, a BBU. The RU can be included in a radio frequency device or a radio frequency unit. For example, in a remote radio unit (RRU), an active antenna unit (AAU) or a remote radio head (RRH). Or the access network device can also be a server, a wearable device, a vehicle or a vehicle-mounted device, and the like. For example, the access network device in V2X technology can be a road side unit (RSU). It should be understood that the above-mentioned TRP can be a device or module located at the network side of the above-mentioned communication system and having corresponding communication functions. The TRP is usually provided with a communication module, circuit or chip for performing corresponding communication functions.The TRPs also have program instructions configured for respective communication functions.

[0096] It should be noted that in different systems, the CU (or CU-CP and CU-UP), DU or RU can also have different names, but those skilled in the art can understand their meanings. For example, in an open radio access network (ORAN) system, the CU can also be referred to as an open centralized unit (O-CU) or an open CU, the DU can also be referred to as an open distributed unit (O-DU), the CU-CP can also be referred to as an open centralized unit control plane (O-CU-CP), the CU-UP can also be referred to as an open centralized unit user plane (O-CU-UP), and the RU can also be referred to as an open radio unit (O-RU). The specific application is not limited. Any one of the CU, CU-CP, CU-UP, DU and RU in the present application can be realized by a software module, a hardware module, or a combination of a software module and a hardware module.

[0097] Optionally, for network elements in the ORAN system, each network element can implement the protocol layer functions shown in Table 1 below.

[0098] Table 1

[0099] It should be noted that in the ORAN system, the access network device in the present application can be one or more network elements in Table 1 above.

[0100] The architecture of the CU and the DU of the access network device will be introduced below. The access network device includes at least one CU and at least one DU. Optionally, the access network device also includes at least one RU.

[0101] The following is introduced by taking an access network device including a CU and a DU as an example. The CU has part of the function of the core network, and the CU can include a CU-CP and a CU-UP. The CU and the DU can be configured according to the protocol layer function of the wireless network they implement. For example, the CU is configured to implement the function of the packet data convergence protocol (PDCP) layer and the protocol layer above (for example, the function of the RRC layer and / or the SDAP layer). The DU is configured to implement the function of the protocol layer below the PDCP layer (for example, the RLC layer, the MAC layer, and / or the physical (PHY) layer). For another example, the CU is configured to implement the function of the protocol layer above the PDCP layer (for example, the RRC layer and / or the SDAP layer), and the DU is configured to implement the function of the protocol layer below the PDCP layer (for example, the RLC layer, the MAC layer, and / or the PHY layer, etc.).

[0102] When the CU includes the CU-CP and the CU-UP, the CU-CP is used to implement the control plane function of the CU, and the CU-UP is used to implement the user plane function of the CU. For example, when the CU is configured to implement the function of the PDCP layer, the RRC layer and the SDAP layer, the CU-CP is used to implement the function of the RRC layer and the control plane function of the PDCP layer, and the CU-UP is used to implement the function of the SDAP layer and the user plane function of the PDCP layer.

[0103] The CU-CP can interact with a network element in the core network for implementing the control plane function. The network element in the core network for implementing the control plane function can be an access and mobility function network element, for example, an AMF in a 5G system. The AMF is used to be responsible for the mobility management in the mobile network, such as the location update of the terminal device, the registration network of the terminal device, the handover of the terminal device, etc.

[0104] The CU-UP can interact with a network element in the core network for implementing the user plane function. The network element in the core network for implementing the user plane function, for example, a user function (UPF) in a 5G system, is used to be responsible for the forwarding and receiving of data in the terminal device.

[0105] Optionally, under the ORAN architecture, a RAN intelligent controller (RIC) module is also involved.

[0106] It should be noted that the access network device can be a device or apparatus with a chip, or a device or apparatus integrated with a circuit, or a chip, a chip system, a module or a control unit in the foregoing illustrated device or apparatus, and the specific application is not limited. It should be noted that in the present application, when referring to the access network device, it can refer to the access network device itself, or refer to the chip, functional module or integrated circuit in the access network device that completes the method provided in the present application, and the specific application is not limited.

[0107] In the embodiments of the present application, the functions of the access network device can also be performed by a module (such as a chip) in the access network device, or by a control subsystem containing the functions of the access network device. The control subsystem containing the functions of the access network device herein can be a control center in the application scenarios of the terminal devices such as smart grids, industrial control, intelligent transportation, and smart cities. The sensing management function can select appropriate access network devices and / or terminal devices, and send a sensing request to the access network device. The sensing process between the access network device and the terminal device is implemented, thereby realizing sensing. The sensing management function has various implementation manners, for example, the sensing management function is a sensing network element, which is located at the core network side. The sensing network element can be a standalone sensing network element, or can be combined with a session management function (SMF). For another example, the sensing management function is a sensing unit, which is combined with the access network device as a module of the access network device.

[0108] The positioning management function is used to provide positioning functions to realize positioning of the terminal device.

[0109] In order to facilitate understanding of the technical solutions of the present application, some technical terms related to the present application are introduced as follows.

[0110] 1. Measurement signal.

[0111] In this application, the measurement signal is used for channel measurement, and the measurement result based on the channel measurement can determine the channel difference between the twin channel and the real channel, which includes but is not limited to: channel characteristics, channel estimation values, or channel measurement quantities, etc. The measurement signal includes but is not limited to: channel state information-reference signal (CSI-RS), positioning reference signal (PRS), sounding reference signal (SRS), phase tracking reference signal (PTRS), sensing signal, or synchronization signal / physical layer broadcast channel block (SSB), or demodulation reference signal (DMRS), etc. It can be understood that the measurement signal can also be replaced by other descriptions, such as: sensing signal, sensing reference signal, reference signal, or sounding signal, etc. Further, the resource for transmitting or receiving the measurement signal can be referred to as the measurement signal resource. For example, the measurement signal resource includes: SRS resource, CSI-RS resource, PRS resource, DMRS resource, or PTRS resource. Since the measurement signal can be replaced by other descriptions, the measurement signal resource can also be replaced by other descriptions accordingly. For example: sensing resource, sensing signal resource, reference signal resource, sensing measurement resource, or measurement resource, etc.

[0112] 2. Environment and environment information.

[0113] The environment can also be referred to as a scene. The environment involved in the embodiments of the present application refers to the environment where the transmitter or receiver is located (or located). The environment where the transmitter is located can be the environment determined with the position of the transmitter as the reference point, and similarly, the environment where the receiver is located can be understood as the environment determined with the position of the receiver as the reference point. In fact, whether it is the environment where the transmitter is located or the environment where the receiver is located, it can include the transmitter and the receiver. The environment can be used to assist in positioning the transmitter and the receiver. In addition to the transmitter and the receiver, the scene can also include obstacles.

[0114] The information used to indicate the environment is referred to as environment information. The environment information can also be referred to as parameter information of the environment, or parameter set information of the environment, etc. The environment information indicates the environment where the transmitter or receiver is located. The environment information indicates the obstacles in the environment. The environment information includes at least one of the number information, position information, shape information or material characteristic information of the obstacles in the environment. The content of the obstacles can refer to the content of the obstacles discussed in the foregoing, and the repeated parts will not be listed. Optionally, the environment information indicates at least one of the outline and material of the building / plant, the outline and position of the vehicle, the position of the pedestrian, or the distribution of the crowd, etc.

[0115] The form of the environmental information can be, for example, map information of the environment or point cloud information (such as two-dimensional, three-dimensional, or three-dimensional and above point cloud information) of the environment. The map information indicates a map, for example, a building map, which can contain coordinates of multiple edges of a building, and thus can indicate the positions, shapes, and sizes of obstacles in the environment, and the like. The three-dimensional point cloud information, for example, includes a large number of points, each of which contains a three-dimensional coordinate and other attributes, such as intensity information of the point cloud or type information of the point cloud, which indicates the type (or material) of the object corresponding to the point cloud.

[0116] 3. Environment perception.

[0117] With the rapid development of wireless communication technology, base stations as the core components of the network, their functions and application scenarios are also expanding. In recent years, the technology of using base stations for environment perception has gradually attracted attention. This technology is based on the interaction between the base station and the surrounding environment, by collecting and analyzing the signals received by the base station, to realize the perception and monitoring of the surrounding environment.

[0118] In the field of environment perception, traditional methods usually rely on special sensors and devices, such as cameras, radars, or infrared detectors, etc. However, these methods have some problems, such as high cost, difficult deployment, affected by weather conditions, etc. In contrast, using base stations for environment perception has many advantages.

[0119] Base stations have a wide coverage range. As the infrastructure of wireless communication networks, base stations usually cover the entire city or a specific area. This means that using base stations for environment perception can achieve real-time monitoring of a large area, providing valuable data support for urban planning, traffic management, disaster warning, and other fields. Secondly, base stations have the characteristic of being continuously online. Base stations need to provide communication services for users 24 hours a day without interruption, so they are always in working condition. This makes it possible to use base stations for environment perception to achieve real-time, continuous data collection and analysis, and timely discovery and handling of environmental problems. In addition, using base stations for environment perception can also reduce costs. Since base stations are already widely deployed in cities, there is no need to install a large number of additional sensors and devices. Only by upgrading and modifying the existing base stations, the perception and monitoring of the surrounding environment can be achieved. This not only saves a lot of investment costs, but also avoids repeated construction and resource waste.

[0120] 4. Signal transmission path.

[0121] In the embodiments of the present application, the signal transmission path refers to the path that the measurement signal passes through from the transmitter to the receiver. The signal transmission path can also be referred to as a propagation path, a transmission route, a propagation route, a perception path, a perception route, a multipath, or a path, etc., and the embodiments of the present application do not limit this.

[0122] The signal transmission path from the transmitter to the receiver can include one or more paths. When the one or more paths are two or more, the one or more paths can be referred to as multipath, or the transmission between the transmitter and the receiver can be described as multipath transmission. Any of the one or more paths can be divided into a line-of-sight (LOS) path and a non-line-of-sight (NLOS) path. The LOS path can also be referred to as an LOS propagation path or an LOS transmission path, etc. The NLOS path can also be referred to as an NLOS propagation path or an NLOS transmission path, etc.

[0123] Please refer to FIG. 3a, which is a schematic diagram of a sensing area. LOS refers to the absence of an obstacle in the signal transmission path between the transmitter and the receiver. The obstacle can also be referred to as an occlusion or a blockage, etc. NLOS refers to the presence of an obstacle in the signal transmission path between the transmitter and the receiver. The obstacle can be a person, an animal, or an object, etc., without limitation on the type thereof. For example, the obstacle is at least one of a building (such as a wall of the building), a vehicle, or a plant, etc. In addition, the obstacle is stationary relative to the reference object, or is moving relative to the reference object, without limitation thereon. The reference object can also be referred to as a reference object, etc., such as the earth or the ground, etc.

[0124] For NLOS, some obstacles on the path can act on the signal transmitted on the path. The action can be at least one of reflection, scattering, diffraction, transmission, or refraction, etc. Reflection refers to the phenomenon that a wave (such as an electromagnetic wave) propagates back when it reaches an obstacle. Scattering refers to the phenomenon that an electromagnetic wave carrying a signal propagates in different directions when it encounters an obstacle with a surface that is approximately equal to or slightly smaller than the wavelength of the electromagnetic wave during transmission. For example, scattering occurs when an electromagnetic wave encounters a rough obstacle surface. Diffraction, also known as bending, refers to the physical phenomenon that a wave deviates from the original straight-line propagation when it encounters an obstacle. Transmission refers to the phenomenon that a wave exits after being refracted through an obstacle. The transmitted object can be a transparent or translucent object, such as glass, a color filter, etc. Refraction refers to the change in the direction of wave propagation when it passes through an obstacle or experiences gradual changes in the obstacle.

[0125] The signal in the transmission process is changed in at least one of intensity, angle, direction (or transmission direction or propagation direction, etc.) or power due to the effect of the obstacle. Therefore, according to the type of the effect of the obstacle on the signal on the path, the obstacle can be classified as a reflector, a scatterer, a diffractor, a transmitter or a refractor, etc. The reflector reflects the signal on the path. The scatterer scatters the signal on the path. The diffractor diffracts the signal on the path. The transmitter transmits the signal on the path. The refractor refracts the signal on the path. The reflector, the scatterer, the diffractor, the transmitter or the refractor, etc. can be further classified according to the actual form, which is not limited herein. For example, the reflector can include a reflecting surface or a reflecting point, etc. The reflecting surface refers to a surface that reflects the signal, and the reflecting point refers to a point that reflects the signal, etc.

[0126] It should be noted that the obstacle in the embodiments of the present application can also be replaced by a target or a perceived target, etc., which is not limited in the embodiments of the present application.

[0127] For ease of understanding, please refer to FIG. 3b, which is a schematic diagram of a signal transmission path. The multipath order refers to the number of times that the electromagnetic wave encounters an obstacle from the transmitter to the receiver or the number of times that the propagation direction is changed. The multipath order can also be referred to as the propagation path order. For example, the signal transmission path shown in FIG. 3b, path (1) is a 0-order path, path (2) is a 1-order path passing through an obstacle, and path (3) is a 2-order path passing through two obstacles and changing the direction twice.

[0128] 5. Position.

[0129] The position can be a relative position, for example, the position of a certain device can be the position of the device relative to another device. Alternatively, the position can be an absolute position, for example, the position of a certain device can be the geographical position of the device. The geographical position of a certain device includes, for example, the longitude and latitude of the device, and can also include the height, etc.

[0130] 6. Perception technology.

[0131] The perception technology refers to detecting, tracking and imaging the obstacle by using the communication network. The technical principle of the perception technology is different from that of the communication technology. The communication technology is that the sending end modulates the information on the radio wave and sends it to the receiving end, and the receiving end demodulates the signal carried on the radio wave to obtain the information. The perception technology needs the sending end to send the radio wave to a specific direction, and when the radio wave irradiates the surface of the obstacle, a reflected wave is formed, so that the receiving end receives and processes the reflected wave to obtain the shape, size, position, material, speed and type of the obstacle, etc.

[0132] The sensing technology can be generally divided into two modes: single-station sensing and double-station sensing. In the single-station sensing, the sending end and the receiving end of the measurement signal are the same device. From the measurement signal flow, the sensing station not only sends the measurement signal, but also receives the signal reflected on the surface of the obstacle (also known as the echo signal). Therefore, the single-station sensing mode is also called the self-sending and self-receiving mode, as shown in FIG. 4a, which is a schematic diagram of a single-station sensing scene. For the double-station sensing, the sending end and the receiving end of the measurement signal are two different devices. From the measurement signal flow, the sensing station A sends the measurement signal, and the signal reflected on the surface of the obstacle is received by the sensing station B. Therefore, the double-station sensing mode is also called the A-sending and B-receiving mode, as shown in FIG. 4b, which is a schematic diagram of a double-station sensing scene.

[0133] For ease of understanding, please refer to FIG. 4c, which is a schematic diagram of a sensing scene in an embodiment of the present application. In the process of communication between the access network device and the terminal device in FIG. 4c, the access network device can also sense objects without communication capability, such as the car and the user in FIG. 4c.

[0134] Further, the sensing scene shown in FIG. 4c can be further divided into multiple sub-scenes. For example, the sensing scene shown in FIG. 4d, taking the access network device as a base station and the terminal device as a user equipment (UE) as an example. FIG. 4d is a schematic diagram of another sensing scene in an embodiment of the present application. The sensing scene can include the following: (1) the base station itself sends the measurement signal, and the base station itself receives the echo signal of the measurement signal; (2) the UE itself sends the measurement signal, and the UE itself receives the echo signal of the measurement signal; (3) the base station A sends the measurement signal, and the base station B receives the echo signal of the measurement signal, the base station A and the base station B being different base stations; (4) the UE A sends the measurement signal, and the UE B receives the echo signal of the measurement signal, the UE A and the UE B being different UEs; (5) the base station sends the measurement signal, and the UE receives the echo signal of the measurement signal; (6) the UE sends the measurement signal, and the base station receives the echo signal of the measurement signal.

[0135] 7. Real network and real channel.

[0136] The real network in the embodiment of the present application refers to the network in the real world. The channel included in the real network is called the real channel. For example, the real network includes an access network device and a terminal device, and the real channel is the transmission channel of the signal between the access network device and the terminal device.

[0137] 8. Twin network and twin channel.

[0138] The twin network in the embodiments of the present application refers to a simulation of a real network (or a mirror image of the real network), in other words, the twin network can also be referred to as a simulation network or a mirror network. Correspondingly, the twin channel included in the twin network refers to a simulation of a real channel, in other words, the twin channel can also be referred to as a simulation channel or a mirror channel, or in other words, the twin channel is a simulation channel of the real channel in channel environment information, or in other words, the twin channel is a simulation of the real channel in environment information, or in other words, the twin channel is a simulation channel obtained based on channel environment information of the real channel, and the channel environment information indicates a channel environment of the real channel.

[0139] In a possible implementation manner, the twin channel can also be a channel constructed by acquiring information of the real network through a perception technology.

[0140] In another possible implementation manner, the twin channel can also be a channel determined by a core network device (for example, a perception function), an access network device or a terminal device from a channel atlas library according to location information. The channel atlas library includes one or more mapping relationships, and each set of mapping relationships indicates a mapping relationship between location information and channel characteristic information (or referred to as a channel fingerprint). The mapping relationship can be reported by one or more terminal devices in the real network.

[0141] It should be noted that the embodiments of the present application do not limit the generation manner of the twin network or the twin channel.

[0142] 9. Channel fingerprint-based positioning technology.

[0143] FIG. 5 is a schematic diagram of a channel fingerprint-based positioning technology. As shown in FIG. 5, first, a communication device acquires a channel fingerprint of each sampling point in a real network and location information of the sampling point. A mapping relationship between the channel fingerprint of the sampling point and the location information of the sampling point is generated based on the channel fingerprint of the sampling point and the location information of the sampling point. Then, the communication device trains a positioning model based on a plurality of mapping relationships between channel fingerprints and location information. After obtaining the positioning model, a channel fingerprint collected by a to-be-positioned point is input into the positioning model, and location information of the to-be-positioned point can be obtained.

[0144] As described in the background section, a twin network can be constructed based on environment information of a real network, and a positioning model is trained based on a channel fingerprint of a twin channel, and since it is not necessary to collect a channel fingerprint of a real channel, the cost can be effectively saved.

[0145] In an example, an access network device (which can be one access network device or multiple access network devices) receives a SRS signal sent by a terminal device, and then performs channel estimation based on the SRS signal to obtain a channel estimation result. The access network device reports the channel estimation result to an LMF, and the LMF inputs the channel estimation result as a channel fingerprint into a positioning model, which is a neural network model (or an artificial intelligence, AI, model). Then, the positioning model outputs location information of the terminal device corresponding to the channel estimation result.

[0146] However, a real network environment is often dynamically changing, for example, the appearance and disappearance of a building, and the appearance and disappearance of a moving target (such as a pedestrian or a vehicle). Correspondingly, a real channel included in the real network is also dynamically changing. With the change of the real network environment, the twin network can be greatly different from the real network. Further, the channel fingerprint of the twin channel and the channel fingerprint of the real channel often have a large difference. Therefore, in a scenario of training a positioning model by applying the channel fingerprint of the twin channel, whether the twin channel is accurate compared with the real channel will affect the positioning accuracy of the positioning model.

[0147] To detect whether the twin channel is accurate, a common implementation is that a terminal device or an access network device reports a measurement result of a real channel to a core network device. The core network device determines whether the twin channel is accurate compared with the real channel according to a difference between the measurement result of the real channel and a measurement result of the twin channel, the measurement result of the twin channel being obtained according to the twin network. However, reporting the measurement result of the real channel to the core network device by the terminal device or the access network device has a problem of difficulty in balancing detection accuracy and reporting overhead. The detection accuracy refers to the accuracy of detecting the accuracy of the twin channel, or the detection accuracy refers to the accuracy of detecting the consistency between the twin channel and the real channel. Specifically, to improve the detection accuracy, the granularity of the measurement result of the real channel needs to be as fine as possible. However, the measurement result of the real channel includes measurement results with finer granularity, and the terminal device or the access network device reporting the measurement result will occupy more communication overhead, affecting normal communication services.

[0148] In summary, how to determine the accuracy of the twin channel while balancing the communication overhead is a technical problem to be solved at present.

[0149] Based on this, an information indication method is provided in the embodiments of the present application, which comprises: a first device sending first information, the first information indicating a channel difference between a real channel and a twin channel, the real channel being a transmission channel of a signal between the first device and a second device, and the twin channel being a simulation channel of the real channel in channel environment information. Compared with the first device reporting channel characteristics of the real channel, the first device reporting the channel difference between the real channel and the twin channel can realize reporting of channel characteristics with finer granularity under the premise of the same or lower reporting overhead. Since the reporting of channel characteristics with finer granularity is supported, the core network device can accurately compare the difference between the twin channel and the real channel based on the channel characteristics with finer granularity, so as to screen a twin channel with high accuracy. The twin channel with high accuracy can also be expressed as a twin channel with higher consistency compared with the real channel.

[0150] Next, the embodiments of the present application are described in conjunction with the drawings. First, a communication system proposed in the embodiments of the present application is introduced. For ease of understanding, please refer to FIG. 6, which is a topological schematic diagram of a communication system in the embodiments of the present application. The communication system comprises a first device, a second device and a core network device. Exemplarily, the core network device can be an SMF or a sensing function, which is not limited in the embodiments of the present application. The communication system can be divided into two cases according to whether the transmitter of a measurement signal and the receiver of the measurement signal are the same device: A transmits and B receives (i.e., the transmitter and the receiver are not the same device); self-transmission and self-reception (i.e., the transmitter and the receiver are the same device). The following describes various scenarios of the communication system shown in FIG. 6.

[0151] Scenario one: the first device is an access network device, the second device is a terminal device, and the real channel between the first device and the second device refers to a transmission channel of a signal between the access network device and the terminal device.

[0152] Scenario two: the first device is a terminal device, the second device is an access network device, and the real channel between the first device and the second device refers to a transmission channel of a signal between the terminal device and the access network device.

[0153] Scenario three: the first device is a terminal device #1, the second device is a terminal device #2, and the real channel between the first device and the second device refers to a transmission channel of a signal between the terminal device #1 and the terminal device #2. For example, a vehicle to X (Vehicular to X, V2X) scenario.

[0154] Scenario four: the first device is an access network device #1, the second device is an access network device #2, and the real channel between the first device and the second device refers to a transmission channel of a signal between the access network device #1 and the access network device #2.

[0155] Scenario five: the first device is terminal device #1, the second device is terminal device #1, and the real channel between the first device and the second device refers to the transmission channel of signals between the terminal device #1 and the obstacle and the obstacle and the terminal device #1.

[0156] Scenario six: the first device is access network device #1, the second device is access network device #2, and the real channel between the first device and the second device refers to the transmission channel of signals between the access network device #1 and the obstacle and the obstacle and the access network device #1.

[0157] In combination with the communication system shown in the foregoing, first, the A-to-B receiving scenario is introduced. Referring to FIG. 7, FIG. 7 is an embodiment flowchart of an information indication method in the embodiment of the present application. The information indication method proposed in the embodiment of the present application includes the following steps.

[0158] S1, the first device sends fourth information to the core network device, and the fourth information is used to indicate that the first device supports obtaining a twin channel or the first device has the capability of obtaining the twin channel.

[0159] Step S1 is an optional step.

[0160] In step S1, the first device can send the fourth information to the core network device, and the fourth information indicates that the first device supports obtaining a twin channel or the first device has the capability of obtaining the twin channel. For the first device supporting obtaining a twin channel, the first device supports reporting the first information, and the first information indicates the channel difference between the real channel and the twin channel. The real channel is the transmission channel of signals between the first device and the second device, and the twin channel is the simulation channel of the real channel in the channel environment information.

[0161] In a possible implementation manner, when the first device is a terminal device, the first device can send the fourth information to the core network device in the network access stage. Exemplarily, the fourth information is carried in an LTE positioning protocol (LPP) message.

[0162] In another possible implementation manner, when the first device is an access network device, the first device can send the fourth information to the core network device in the initial connection establishment stage. The initial connection establishment stage refers to the stage in which the first device establishes a connection with other access network devices nearby.

[0163] There are multiple possible implementation manners for the first device to obtain a twin channel, which are exemplarily described as follows:

[0164] In an example, the first device constructs the twin channel based on environment information between the first device and the second device, in other words, the twin channel is generated based on the environment information between the first device and the second device. The environment information includes one or more of the following: map information of a network environment, position information of a point cloud in the network environment, intensity information of the point cloud, or type information of the point cloud, the type information of the point cloud indicating a type of an object corresponding to the point cloud, the network environment including the first device and the second device. The map information of the network environment can further include position information of the first device and / or position information of the second device.

[0165] For example, the first device determines information of the real channel. Then, the first device determines (or generates) the twin channel based on the information of the real channel, the information of the real channel including one or more of the following: position information of the first device, position information of the second device, transmit power of a measurement signal, or a precoding matrix of the measurement signal. The position information of the first device can be determined by the first device itself or be informed to the first device by another device, for example, a core network device informing the first device of the position information of the first device. The position information of the second device can be measured by the first device based on the measurement signal or be informed to the first device by another device, for example, the core network device informing the first device of the position information of the second device, or the second device informing the first device of the position information of the second device. The transmit power of the measurement signal and / or the precoding matrix of the measurement signal can be determined by the first device based on receiving third information.

[0166] In another example, the first device can obtain the twin channel from another device. For example, the first device obtains the twin channel from the second device; or for example, the first device obtains the twin channel from a core network device; or for example, the first device obtains the twin channel from a cloud platform.

[0167] In a scenario of an example, since obtaining the twin channel requires a communication device to have strong processing capability, for a communication device with strong processing capability supporting obtaining the twin channel, the fourth information can be reported to the core network device, so that the core network device delivers the second information to the communication device based on the fourth information (see step S3 for details).

[0168] In another example scenario, for some communication devices with weak processing capability, the capability of not supporting obtaining the twin channel can be reported to the core network device, for example, the sixth information is reported to the core network device by the communication device, the sixth information indicating that the communication device does not support obtaining the twin channel or the communication device does not have the capability of obtaining the twin channel. Such communication devices with weak processing capability are, for example, some internet of things (IoT) devices or some 5G terminal devices.

[0169] S2, the core network device sends fifth information to the second device, the fifth information being used for configuring the measurement signal.

[0170] Step S2 is an optional step.

[0171] In step S2, the core network device sends fifth information to the second device, the fifth information being used for configuring the measurement signal issued by the second device. The core network device can determine the fifth information according to the requirement of an application (APP) and / or the requirement of a communication service.

[0172] For example, the fifth information is used for configuring the type of the measurement signal, which can be one or more of the following signals: channel state information-reference signal, positioning reference signal, sounding reference signal, phase tracking reference signal, sensing signal, demodulation reference signal, or synchronization signal / physical layer broadcast channel block, etc. The DMRS can be further subdivided into physical layer downlink control channel (PDCCH) DMRS signal, physical layer downlink shared channel (PDSCH) DMRS signal, physical layer uplink control channel (PUCCH) DMRS signal, or physical layer uplink shared channel (PUSCH) DMRS signal for uplink or downlink scenarios.

[0173] For another example, the fifth information is used for configuring the time domain resource and / or frequency domain resource, etc. of the measurement signal. For example, the fifth information is used for configuring the period or time window of the measurement signal sent by the second device. For another example, the fifth information can also be used for configuring the number of the measurement signal sent by the second device.

[0174] Optionally, the fifth information further includes fourth indication information, the fourth indication information being used for instructing the second device to send third information to the first device, the third information including: signal transmission power of the measurement signal (or transmission power of the measurement signal), and / or precoding matrix of the measurement signal.

[0175] For example, the signal transmission power of the measurement signal can be the signal transmission power of the measurement signal on the resource element (RE) carrying the measurement signal, or the signal transmission power of the measurement signal on the symbol carrying the measurement signal.

[0176] Exemplarily, the precoding matrix of the measurement signal can be a downlink precoding matrix in a scenario where the second device is an access network device and the first device is a terminal device; and the precoding matrix of the measurement signal can be an uplink precoding matrix in a scenario where the second device is a terminal device and the first device is an access network device.

[0177] It should be noted that when step S2 is not performed, the second device can also determine the configuration of the measurement signal according to pre-configured information (for example, pre-configured fifth information) or an agreement with the first device (for example, negotiating the fifth information with the first device).

[0178] S3, the core network device sends second information to the first device, and the second information is used to configure the first information reported by the first device. In step S3, the core network device sends second information to the first device, and the second information is used to configure the first information reported by the first device. The core network device can determine the second information according to the needs of an application (APP) and / or the needs of a communication service.

[0179] Specifically, the second information includes one or more of the following information: a reporting period of the first information; a time domain resource used for reporting the first information; first indication information, the first indication information being used to indicate a type of the first information that needs to be reported by the first device; second indication information, the second indication information being used to indicate a reporting trigger condition of the first information; or third indication information, the third indication information being used to indicate a measurement signal based on which the first information is.

[0180] The following will be described respectively:

[0181] Exemplarily, the reporting period of the first information is, for example, reporting the first information once every 5 milliseconds, and is, for example, reporting the first information once after the first device receives x measurement signals, x being a positive integer greater than 1.

[0182] Exemplarily, the time domain resource used for reporting the first information is, for example, a time window [t1, t2], and the first device reports the first information within the time window [t1, t2].

[0183] Exemplarily, the first indication information is used to indicate the type of the first information that needs to be reported by the first device, and the type of the first information includes one or more of the following information: a difference value in the time domain between the real channel and the twin channel, a difference value in the frequency domain between the real channel and the twin channel, or a difference value between the real path and the twin path, the real path being one or more signal transmission paths included in the real channel, and the twin path being one or more signal transmission paths included in the twin channel.

[0184] It can be understood that the first indication information can also indicate a type of the first information with a finer granularity, and embodiments of the present application do not limit this. For example, the first indication information is used to indicate a difference value of a channel impulse response (CIR) of a real channel and a twin channel reported by the first device.

[0185] It can be understood that the core network device can also determine the first indication information according to an accuracy requirement of an application (APP) for the twin channel. For example, the application needs a high-accuracy twin channel, and the first indication information indicates that the first device reports a difference value in a time domain of the real channel and the twin channel and / or a difference value in a frequency domain of the real channel and the twin channel, and the application is, for example, a positioning application (a map application or the like) to ensure the accuracy of positioning. For another example, the application does not need a high-accuracy twin channel, and the first indication information indicates that the first device reports a difference value of a real path and a twin path, and the application is, for example, a communication application to reduce a communication overhead of reporting the first information.

[0186] Exemplarily, the second indication information is used to indicate a reporting trigger condition of the first device for reporting the first information. For example, the second indication information configures a first threshold of a measurement signal, and when a bandwidth of the measurement signal received by the first device is greater than or equal to the first threshold, the first device reports the first information determined based on the measurement signal. Since the measurement signal with a larger bandwidth has a characteristic of high measurement accuracy, the accuracy of the first information can be improved. For another example, the second indication information configures a second threshold of a channel difference, and when a channel difference of the real channel and the twin channel determined by the first device based on the measurement signal is greater than or equal to the second threshold, the first device reports the first information to save a communication overhead.

[0187] Optionally, to improve the accuracy of the first information, the second information can also indicate one or more of the following: whether the first device needs or does not need to determine the first information based on a signal transmission power of the measurement signal; whether the first device reports the first information based on the signal transmission power of the measurement signal; a signal transmission power value of the measurement signal based on which the first device reports the first information; whether the first device needs or does not need to determine the first information based on a precoding matrix; or whether the first device reports the first information based on the precoding matrix; and the precoding matrix based on which the first device reports the first information.

[0188] For example, when the second information indicates the signal transmission power of the measurement signal, the first device determines the first information according to the signal transmission power of the measurement signal in response to the second information. The measurement error of the first information caused by different transmission powers of the measurement signal can be eliminated, so as to improve the accuracy of the first information. For example, the actual signal transmission power of the measurement signal is 40 decibel-milliwatts (dBm), and the channel characteristics of the real channel are obtained based on the measurement signal with the transmission power of 40 dBm. The channel characteristics of the twin channel can be determined based on the measurement signal with a transmission power different from the other transmission power, for example, the transmission power of the measurement signal of the twin channel is 30 dBm. The difference caused by different transmission powers leads to the decrease of the accuracy of the first information.

[0189] For another example, when the second information indicates the precoding matrix of the measurement signal, the first device determines the first information according to the precoding matrix of the measurement signal in response to the second information. The measurement error of the first information caused by different precoding matrices of the measurement signal can be eliminated, so as to improve the accuracy of the first information.

[0190] It should be noted that step S3 is an optional step. When step S3 is not performed, the first device can determine the reported first information according to preconfigured information, for example, preconfigured second information, which is not limited in the embodiments of the present application.

[0191] It should be noted that the execution order of steps S1-S3 is not limited in the embodiments of the present application.

[0192] S4, the second device sends the measurement signal to the first device.

[0193] Specifically, the second device can send the measurement signal to the first device according to the fifth information. The second device can also send the measurement signal to the first device according to the request of the first device.

[0194] For the measurement signal, please refer to the description of the foregoing embodiments, which will not be repeated here.

[0195] S5, the first device sends the first information to the core network device, and the first information indicates the channel difference between the real channel and the twin channel.

[0196] The first information indicating the channel difference between the real channel and the twin channel can be replaced by: the first information indicating the channel characteristic difference between the real channel and the twin channel, or the first information indicating the channel fingerprint difference between the real channel and the twin channel, or the first information indicating the channel measurement difference between the real channel and the twin channel.

[0197] In step S5, the first device determines information of the real channel, which includes one or more of the following: location information of the first device, location information of the second device, transmit power of the measurement signal, or a precoding matrix of the measurement signal. The location information of the first device can be determined by the first device itself or be informed to the first device by another device, for example, the core network device informs the first device of the location information of the first device. The location information of the second device can be measured by the first device according to the measurement signal, or be informed to the first device by another device, for example, the core network device informs the first device of the location information of the second device, or the second device informs the first device of the location information of the second device. The transmit power of the measurement signal and / or the precoding matrix of the measurement signal can be determined by the first device by receiving the third information.

[0198] In a possible implementation, the first device acquires a twin channel matching the information of the real channel according to the information of the real channel. The twin channel can be a twin channel generated in advance by another device, for example, the second device or the core network device.

[0199] In another possible implementation, the twin channel is generated based on environment information between the first device and the second device. The first device generates a twin channel corresponding to the information of the real channel according to the information of the real channel.

[0200] The information of the real channel is, for example, the location information of the first device and / or the location information of the second device.

[0201] The first device determines a channel feature of the real channel according to the measurement signal in step S4, which can be replaced by a channel estimation value of the real channel. After the first device determines the twin channel, the first device determines a channel feature of the twin channel according to the measurement signal of the twin channel, which can be replaced by a channel estimation value of the twin channel. The twin channel determined by the first device can be acquired from another device or generated by the first device itself.

[0202] Optionally, the first device can also determine the channel feature of the twin channel by integrating other information of the real channel, for example, the transmit power of the measurement signal and / or the precoding matrix of the measurement signal. Finally, the first device determines the first information according to the channel feature of the real channel and the channel feature of the twin channel.

[0203] For example, the channel feature of the real channel includes a real channel impulse response channel H cir and / or a real channel frequency response (CFR) channel Hcfr wherein,

[0204] M is a positive integer, T is a positive integer, M = the number of transmitting antennas of the transmitter * the number of receiving antennas of the receiver, T is the number of time domain sampling points, N is a positive integer, N is the number of points of fast Fourier transform (FFT);

[0205] The channel characteristics of the twin channel include: the twin CIR channel of the twin channel and / or the twin CFR channel wherein,

[0206] The first information specifically indicates the difference amount of the channel characteristics of the real channel and the channel characteristics of the twin channel. The specific content of the first information is described in detail below.

[0207] In one possible implementation, the first information includes one or more of the following information:

[0208] Type A: the difference value in the time domain between the real channel and the twin channel,

[0209] Type B: the difference value in the frequency domain between the real channel and the twin channel,

[0210] or Type C: the difference value between the real path and the twin path, the real path being one or more signal transmission paths included in the real channel, and the twin path being one or more signal transmission paths included in the twin channel.

[0211] The following are described respectively.

[0212] First, Type A: the difference value in the time domain between the real channel and the twin channel, includes one or more of the following information:

[0213] Type A-1: the channel impulse response (CIR) difference value between the real channel and the twin channel,

[0214] or Type A-2: the power delay profile (PDP) difference value between the real channel and the twin channel.

[0215] Regarding Type A-1, one example is as follows: the CIR difference value between the real channel and the twin channel includes one or more of the following information:

[0216] The difference value between the CIR of the real CIR channel and the CIR of the twin CIR channel at each time domain sampling point;

[0217] The average value of the difference value between the CIR of the real CIR channel and the CIR of the twin CIR channel at each time domain sampling point;

[0218] a difference value of a CIR amplitude value of the real CIR channel and a CIR amplitude value of the twin CIR channel at each time-domain sample point;

[0219] an average value of a difference value of a CIR amplitude value of the real CIR channel and a CIR amplitude value of the twin CIR channel at each time-domain sample point;

[0220] a difference value of a CIR of a target sample point of the real CIR channel and a CIR of the target sample point of the twin CIR channel, and a time-domain location of the target sample point;

[0221] a difference value of a CIR amplitude value of the target sample point of the real CIR channel and a CIR amplitude value of the target sample point of the twin CIR channel, and a time-domain location of the target sample point;

[0222] a difference value of a CIR standard deviation of the real CIR channel and a CIR standard deviation of the twin CIR channel;

[0223] or, a difference value of a CIR amplitude value standard deviation of the real CIR channel and a CIR amplitude value standard deviation of the twin CIR channel.

[0224] Further examples are as follows, assuming that the CIR difference value is Δ, the CIR difference value includes:

[0225] a difference value of a CIR of the real CIR channel and a CIR of the twin CIR channel at each time-domain sample point, including:

[0226] or

[0227] an average value of a difference value of a CIR of the real CIR channel and a CIR of the twin CIR channel at each time-domain sample point, including:

[0228] or

[0229] a difference value of a CIR amplitude value of the real CIR channel and a CIR amplitude value of the twin CIR channel at each time-domain sample point, including:

[0230] or

[0231] an average value of a difference value of a CIR amplitude value of the real CIR channel and a CIR amplitude value of the twin CIR channel at each time-domain sample point, including:

[0232] The difference value of the CIR of the target sampling point of the real CIR channel and the CIR of the target sampling point of the twin CIR channel includes:

[0233] Or

[0234] The difference value of the CIR amplitude value of the target sampling point of the real CIR channel and the CIR amplitude value of the target sampling point of the twin CIR channel includes:

[0235] Or Wherein, N sam is the target sampling point;

[0236] The difference value of the CIR standard deviation of the real CIR channel and the CIR standard deviation of the twin CIR channel includes:

[0237] σ is the standard deviation of the real CIR channel,

[0238] is the standard deviation of the twin CIR channel,

[0239] h ave is the CIR average value of the real CIR channel,

[0240] is the CIR average value of the twin CIR channel;

[0241] Or, the difference value of the CIR amplitude value standard deviation of the real CIR channel and the CIR amplitude value standard deviation of the twin CIR channel includes:

[0242] |σ| is the CIR amplitude value standard deviation of the real CIR channel,

[0243] is the CIR amplitude value standard deviation of the twin CIR channel,

[0244] |h| ave is the CIR amplitude value of the real CIR channel,

[0245] is the CIR amplitude value of the twin CIR channel.

[0246] Regarding Type A-2, an example is as follows: the difference value of the power delay profile PDP of the real channel and the twin channel includes:

[0247] a difference value of the PDP of the real CIR channel and the PDP of the twin CIR channel at each time-domain sampling point;

[0248] an average value of the difference value of the PDP of the real CIR channel and the PDP of the twin CIR channel at each time-domain sampling point;

[0249] a difference value of the PDP of the target sampling point of the real CIR channel and the PDP of the target sampling point of the twin CIR channel, and a time-domain location of the target sampling point;

[0250] a difference value of the PDP standard deviation of the real CIR channel and the PDP standard deviation of the twin CIR channel.

[0251] Further examples are as follows, let the PDP difference value be Δ, the PDP difference value includes:

[0252] a difference value of the PDP of the real CIR channel and the PDP of the twin CIR channel at each time-domain sampling point, includes:

[0253] Or Wherein, the PDP of the real channel is (H cir ) ·2 , the PDP of the twin channel is

[0254] an average value of the difference value of the PDP of the real CIR channel and the PDP of the twin CIR channel at each time-domain sampling point, includes:

[0255] Or

[0256] a difference value of the PDP of the target sampling point of the real CIR channel and the PDP of the target sampling point of the twin CIR channel, includes:

[0257] Or Wherein, N sam is the target sampling point;

[0258] a difference value of the PDP standard deviation of the real CIR channel and the PDP standard deviation of the twin CIR channel, includes:

[0259] |σ| is the PDP standard deviation of the real CIR channel,

[0260] is the PDP standard deviation of the twin CIR channel,

[0261] |h| 2 ave PDP of real CIR channel,

[0262] PDP of twin CIR channel.

[0263] Secondly, introduce Type B: the difference value of real channel and twin channel in frequency domain. The difference value of real channel and twin channel in frequency domain includes one or more of the following information:

[0264] Type B-1: the difference value of channel frequency response (CFR) of real channel and twin channel,

[0265] Or, Type B-2: the difference value of CFR power of real channel and twin channel.

[0266] Regarding Type B-1, an example is as follows: the difference value of channel frequency response (CFR) of real channel and twin channel includes:

[0267] The difference value of CFR of real CFR channel and CFR of twin CFR channel at each frequency domain sampling point;

[0268] The average value of the difference value of CFR of real CFR channel and CFR of twin CFR channel at each frequency domain sampling point;

[0269] The difference value of CFR amplitude value of real CFR channel and CFR amplitude value of twin CFR channel at each frequency domain sampling point;

[0270] The average value of the difference value of CFR amplitude value of real CFR channel and CFR amplitude value of twin CFR channel at each frequency domain sampling point;

[0271] The difference value of CFR of target sampling point of real CFR channel and CFR of target sampling point of twin CFR channel, and the frequency domain location of target sampling point;

[0272] The difference value of CFR amplitude value of target sampling point of real CFR channel and CFR amplitude value of target sampling point of twin CFR channel, and the frequency domain location of target sampling point;

[0273] The difference value of CFR standard deviation of real CFR channel and CFR standard deviation of twin CFR channel;

[0274] Or, the difference value of CFR amplitude value standard deviation of real CFR channel and CFR amplitude value standard deviation of twin CFR channel.

[0275] Further examples are as follows, let the CFR difference value be Δ, the CFR difference value includes:

[0276] The difference value of the CFR of the real CFR channel and the CFR of the twin CFR channel at each frequency domain sampling point, including:

[0277] Or

[0278] The average value of the difference value of the CFR amplitude value of the real CFR channel and the CFR amplitude value of the twin CFR channel at each frequency domain sampling point, including:

[0279] Or

[0280] The difference value of the CFR amplitude value of the real CFR channel and the CFR amplitude value of the twin CFR channel at each frequency domain sampling point, including:

[0281] Or

[0282] The average value of the difference value of the CFR amplitude value of the real CFR channel and the CFR amplitude value of the twin CFR channel at each frequency domain sampling point, including:

[0283] The difference value of the CFR of the target sampling point of the real CFR channel and the CFR of the target sampling point of the twin CFR channel, including:

[0284] Or Wherein, N sam is the target sampling point;

[0285] The difference value of the CFR amplitude value of the target sampling point in the real CFR channel and the CFR amplitude value of the target sampling point in the twin CFR channel, including:

[0286] Or

[0287] Regarding Type B-2, an example is as follows: the CFR power difference value of the real channel and the twin channel, including one or more of the following information:

[0288] The difference value of the CFR power of the real CFR channel and the CFR power of the twin CFR channel at each frequency domain sampling point;

[0289] The average value of the difference value of the CFR power of the real CFR channel and the CFR power of the twin CFR channel at each frequency domain sampling point;

[0290] a difference value of a PDP of a target sampling point of the real CFR channel and a PDP of a target sampling point of the twin CFR channel, and a frequency domain location of the target sampling point;

[0291] a difference value of a CFR power standard deviation of the real CFR channel and a CFR standard deviation of the twin CFR channel.

[0292] Further examples are as follows, let the CFR power difference value be Δ, the CFR power difference value, including:

[0293] a difference value of a CFR power of the real CFR channel and a CFR power of the twin CFR channel at each frequency domain sampling point, including:

[0294] Or wherein, (H cfr ) .2 is a CFR power of the real CFR channel, is a CFR power of the twin CFR channel.

[0295] an average value of a difference value of a CFR power of the real CFR channel and a CFR power of the twin CFR channel at each frequency domain sampling point, including:

[0296] Or

[0297] a difference value of a PDP of a target sampling point of the real CFR channel and a PDP of a target sampling point of the twin CFR channel, including:

[0298] Or wherein, N sam is a target sampling point.

[0299] Secondly, introduce type C: a difference value of a real path and a twin path, including one or more of the following information: a difference value of an energy value of the real path and an energy value of the twin path; a difference value of an angle value of the real path and an angle value of the twin path; a difference value of a phase value of the real path and a phase value of the twin path; or, a difference value of a time delay value of the real path and a time delay value of the twin path. The real path refers to a signal transmission path of a transmitter (for example, a second device) to a receiver (for example, a first device) in a real channel. Correspondingly, the twin path refers to a signal transmission path of a transmitter (for example, a second device) to a receiver (for example, a first device) in a twin channel.

[0300] For the convenience of understanding the real path, taking the second device as an access network device and the first device as a terminal device as an example for description. The terminal device measures a measurement signal from the access network device through one or more beams to determine one or more real paths between the terminal device and the access network device, each of the one or more real paths corresponding to one or more beams. The terminal device takes information of each of the one or more real paths corresponding to the one or more beams as beam information. Optionally, one real path corresponds to one or more beams, or one beam corresponds to one or more real paths. For example, as shown in FIG. 9, FIG. 9 is a schematic diagram of one real path in an embodiment of the present application. The terminal device receives a measurement signal from the access network device through a beam 1, and measures the measurement signal to determine a path 1, so the path 1 corresponds to the beam 1. The terminal device receives a measurement signal from the access network device through a beam 2, and measures the measurement signal to determine a path 2, so the path 2 corresponds to the beam 2. The terminal device receives a measurement signal from the access network device through a beam 3, and measures the measurement signal to determine a path 3, so the path 3 corresponds to the beam 3. The terminal device receives a measurement signal from the access network device through a beam 4, and measures the measurement signal to determine a path 4, so the path 4 corresponds to the beam 4.

[0301] The angle value in the embodiment of the present application includes but is not limited to a horizontal arrival angle, a vertical arrival angle, a horizontal departure angle and / or a vertical departure angle. For example, as shown in FIG. 9, the angles corresponding to the at least two beams can include a horizontal arrival angle a1, a vertical arrival angle b1, a horizontal departure angle c1 and a vertical departure angle d1 of the path 1, a horizontal arrival angle a2, a vertical arrival angle b2, a horizontal departure angle c2 and a vertical departure angle d2 of the path 2, a horizontal arrival angle a3, a vertical arrival angle b3, a horizontal departure angle c3 and a vertical departure angle d3 of the path 3, a horizontal arrival angle a4, a vertical arrival angle b4, a horizontal departure angle c4 and a vertical departure angle d4 of the path 4.

[0302] Exemplarily, taking a network environment including j paths as an example, j is a positive integer greater than or equal to 1. The energy value, the angle value, the phase value and the time delay value of the jth real path can be represented as: wherein the energy value of the jth real path is P j , the angle value of the jth real path is the phase value of the jth real path is θ j , and the time delay value of the jth real path is τ j . Correspondingly, the energy value, the angle value, the phase value and the time delay value of the jth twin path can be represented as: wherein the energy value of the jth twin path is P the angle value of the jth twin path is the phase value of the jth twin path is The delay value of the jth twin path is Taking the difference value between the jth real path and the jth twin path as an example, the difference value between the energy value of the real path and the energy value of the twin path can be expressed as The difference value between the angle value of the real path and the angle value of the twin path can be expressed as Δ = θ real - θ twin. The difference value between the phase value of the real path and the phase value of the twin path can be expressed as Or, the difference value between the delay value of the real path and the delay value of the twin path can be expressed as

[0303] Optionally, the first information can further include one or more of the following information: a type of a measurement signal used to measure the real channel; a channel bandwidth of the real channel; an antenna port of the real channel; position information of the first device in the real network; position information of the second device in the real network; position information of the first device in the twin network; position information of the second device in the twin network; identification information of the first device; or, identification information of the second device. The first information can specifically reflect a plurality of fine-grained channel differences between the real channel and the twin channel, so as to improve the accuracy of the twin channel.

[0304] For example, the type of the measurement signal used by the first device to measure the real channel is SRS, and the first information is further used to indicate that the type of the measurement signal is SRS.

[0305] For another example, the channel bandwidth of the real channel measured by the first device is 80 megahertz (MHz), and the first information is further used to indicate that the channel bandwidth of the real channel is 80 MHz.

[0306] The following will be described in combination with the communication scenario shown in the foregoing FIG. 6.

[0307] Taking scenario one as an example, the first device is an access network device, and the second device is a terminal device. The real channel between the first device and the second device refers to a transmission channel of signals between the access network device and the terminal device. The first information indicates the channel difference between the real channel and the twin channel between the access network device and the terminal device.

[0308] Taking scenario two as an example, the first device is a terminal device, and the second device is an access network device. The real channel between the first device and the second device refers to a transmission channel of signals between the terminal device and the access network device. The first information indicates the channel difference between the real channel and the twin channel between the terminal device and the access network device.

[0309] Taking scenario three as an example, the first device is terminal device #1, the second device is terminal device #2, and the real channel between the first device and the second device refers to the transmission channel of signals between the terminal device #1 and the terminal device #2. The first information indicates the channel difference between the real channel and the twin channel between the terminal device #1 and the terminal device #2.

[0310] Taking scenario four as an example, the first device is access network device #1, the second device is access network device #2, and the real channel between the first device and the second device refers to the transmission channel of signals between the access network device #1 and the access network device #2. The first information indicates the channel difference between the real channel and the twin channel between the access network device #1 and the access network device #2.

[0311] In the embodiments of the present application, the first device reports the first information, which indicates the channel difference between the real channel and the twin channel, compared with the way that the first device reports the channel characteristics of the real channel, the reporting overhead of the first device can be reduced. Further, compared with the first device reporting the channel characteristics of the real channel, the first device reporting the channel difference between the real channel and the twin channel can report the channel characteristics with finer granularity under the premise of the same or lower reporting overhead. Since the channel characteristics with finer granularity are supported, the difference between the twin channel and the real channel can be compared with high accuracy based on the channel characteristics with finer granularity, so as to screen the twin channel with high accuracy compared with the real channel. Based on the twin channel with high accuracy, various twin services are carried out, for example, generating a positioning model based on the twin channel with high accuracy, which can effectively improve the positioning accuracy of the positioning model.

[0312] In combination with the foregoing embodiments, secondly, the self-generation and self-reception scenario is introduced, that is, the first device and the second device are the same device. For example, the real channel between the first device and the second device refers to the transmission channel of signals between the access network device #1 and the obstacle and between the obstacle and the access network device #1. For another example, the real channel between the first device and the second device refers to the transmission channel of signals between the terminal device #1 and the obstacle and between the obstacle and the terminal device #1. Please refer to FIG. 8, which is an embodiment flowchart of an information indication method in the embodiments of the present application. The information indication method proposed in the embodiments of the present application comprises:

[0313] D1, the first device (or the second device) sends fourth information to the core network device.

[0314] D2, the core network device sends fifth information to the first device (or the second device), and the fifth information is used to configure a measurement signal.

[0315] D3. The core network device sends second information to the first device (or the second device), where the second information is used to configure the first information reported by the first device.

[0316] Steps D1-D3 are similar to the aforementioned steps S1-S3, and thus are not described herein.

[0317] D4. The second device sends a measurement signal to the first device, i.e., the first device spontaneously transmits and receives the measurement signal, or the second device spontaneously transmits and receives the measurement signal.

[0318] D5. The first device (or the second device) sends first information to the core network device, where the first information indicates a channel difference between the real channel and the twin channel.

[0319] Steps D4-D5 are similar to the aforementioned steps S4-S5, and thus are not described herein.

[0320] The following description is made in combination with the communication scenario illustrated in FIG. 6.

[0321] Taking scenario five as an example, the first device is terminal device #1, the second device is terminal device #1, and the real channel between the first device and the second device refers to a transmission channel of a signal between the terminal device #1 and an obstacle and between the obstacle and the terminal device #1. The first information indicates a channel difference between the real channel and a twin channel between the terminal device #1 and the obstacle and between the obstacle and the terminal device #1.

[0322] Taking scenario six as an example, the first device is access network device #1, the second device is access network device #2, and the real channel between the first device and the second device refers to a transmission channel of a signal between the access network device #1 and an obstacle and between the obstacle and the access network device #1. The first information indicates a channel difference between the real channel and a twin channel between the access network device #1 and the obstacle and between the obstacle and the access network device #1.

[0323] In the above technical solution, the information indication method proposed by the embodiments of the present application can also be applied to a spontaneous transmission and reception scenario, thereby improving the implementation flexibility of the solution. The first device reports first information, where the first information indicates a channel difference between the real channel and the twin channel, and the channel difference of a fine granularity can be indicated at a lower communication cost. Based on the first information, the core network device can accurately determine the accuracy of the twin channel at a lower communication cost. For example, a positioning model is generated based on the high-accuracy twin channel, and the positioning accuracy of the positioning model can be effectively improved.

[0324] In combination with the foregoing embodiments, next, an example scenario in which the information indication method proposed in the embodiments of the present application is applied to an O-RAN system is introduced. Please refer to FIG. 10, which is a schematic diagram of an application scenario in the embodiments of the present application. In the application scenario, the second device is a terminal device (UE), and the first device is an access network device, which includes a DU and a CU. Optionally, the access network device includes a RIC. The application scenario includes the following steps:

[0325] F1. The second device sends fourth information to the core network device.

[0326] F2. The core network device sends fifth information to the first device (DU), where the fifth information is used to configure a measurement signal.

[0327] F3. The core network device sends second information to the first device (DU), where the second information is used to configure the first information reported by the first device.

[0328] F4. The second device sends the measurement signal to the first device (DU).

[0329] F5. The first device (DU) sends first information to the core network device, where the first information indicates the channel difference between the real channel and the twin channel.

[0330] In step F5, optionally, the DU can directly send the first information to the core network device.

[0331] Optionally, the DU can send the first information to the CU, and the CU sends the first information to the core network device.

[0332] Optionally, the DU can send the first information to the RIC, and the RIC sends the first information to the core network device.

[0333] Optionally, the DU can send the first information to the CU, the CU sends the first information to the RIC, and the RIC sends the first information to the core network device.

[0334] Steps F1 to F5 are similar to steps S1 to S5 described above, and thus are not described here.

[0335] Next, the communication apparatus related to the embodiments of the present application is introduced. The communication apparatus can be used as the first device, the second device, and / or the core network device in the foregoing embodiments.

[0336] FIG. 11 is a structural schematic diagram of a communication apparatus according to an embodiment of the present application. Please refer to FIG. 11, the communication apparatus 1100 includes a transceiver module 1101 and a processing module 1102.

[0337] The communication apparatus 1100 comprises an access network device, which can be the first device and / or the second device. Alternatively, the communication apparatus 1100 comprises a component (e.g., a chip), a module or a unit in a terminal device, and the access network device can be the first device and / or the second device. Alternatively, the communication apparatus 1100 comprises a component (e.g., a chip), a module or a unit in a core network device, and the core network device can be the core network device.

[0338] The communication apparatus 1100 can be configured to perform all or part of the steps performed by the first device in the embodiments shown in FIGS. 6-10. For details, refer to related description in the foregoing embodiments shown in FIGS. 6-10.

[0339] The communication apparatus 1100 can be configured to perform all or part of the steps performed by the second device in the embodiments shown in FIGS. 6-10. For details, refer to related description in the foregoing embodiments shown in FIGS. 6-10.

[0340] The communication apparatus 1100 can be configured to perform all or part of the steps performed by the core network device in the embodiments shown in FIGS. 6-10. For details, refer to related description in the foregoing embodiments shown in FIGS. 6-10.

[0341] The processing module 1102 is configured to perform data processing. The transceiver module 1101 is configured to implement corresponding communication functions.

[0342] Optionally, the transceiver module 1101 can include a sending module and a receiving module. The sending module is configured to perform the sending operations in the above method embodiments. The receiving module is configured to perform the receiving operations in the above method embodiments.

[0343] It should be noted that the communication apparatus 1100 can include the sending module and not include the receiving module. Alternatively, the communication apparatus 1100 can include the receiving module and not include the sending module. Specifically, whether the sending module and the receiving module are included in the communication apparatus 1100 can depend on whether the sending action and the receiving action are included in the above scheme performed by the communication apparatus 1100.

[0344] Optionally, the communication apparatus 1100 can further include a storage module, which can be configured to store instructions and / or data. The processing module 1102 can read the instructions and / or data in the storage module, so that the communication apparatus 1100 implements the foregoing method embodiments.

[0345] The communication apparatus 1100 can be configured to perform the actions performed by the first device in the embodiments shown in FIGS. 6-10. The processing module 1102 is configured to perform processing-related operations of the first device in the embodiments shown in FIGS. 6-10. The transceiver module 1101 is configured to perform receiving or sending-related operations of the first device in the embodiments shown in FIGS. 6-10.

[0346] The communication apparatus 1100 can be configured to perform the actions performed by the second device in the embodiments of FIGs. 6-10. The processing module 1102 is configured to perform processing-related operations of the second device in the embodiments of FIGs. 6-10. The transceiver module 1101 is configured to perform receiving or transmitting-related operations of the second device in the embodiments of FIGs. 6-10.

[0347] The communication apparatus 1100 can be configured to perform the actions performed by the core network device in the embodiments of FIGs. 6-10. The processing module 1102 is configured to perform processing-related operations of the core network device in the embodiments of FIGs. 6-10. The transceiver module 1101 is configured to perform receiving or transmitting-related operations of the core network device in the embodiments of FIGs. 6-10.

[0348] For example, the communication apparatus 1100 is configured to perform the following solutions.

[0349] In an example, when the communication apparatus 1100 is applied to the first device, the communication apparatus 1100 comprises:

[0350] The transceiver module 1101 is configured to transmit first information, the first information indicating a channel difference between a real channel and a twin channel,

[0351] Possible implementation and description of the first information, the real channel, the twin channel, the environment information and the channel difference can be found in the corresponding content in the embodiments of FIGs. 6-10, which will not be repeated here.

[0352] In another example, the communication apparatus 1100 is applied to the core network device, the communication apparatus 1100 comprises:

[0353] The transceiver module 1101 is configured to transmit second information to the first device, the second information being used for configuring the first information reported by the first device;

[0354] The transceiver module 1101 is configured to receive the first information from the first device, the first information indicating a channel difference between a real channel and a twin channel,

[0355] In a possible implementation, possible implementation and description of the second information can be found in the corresponding content in the embodiments of FIGs. 6-10, which will not be repeated here.

[0356] In a possible implementation, the transceiver module 1101 is further configured to receive fourth information from the first device, the fourth information being used for indicating that the first device supports obtaining the twin channel.

[0357] In a possible implementation, the transceiver module 1101 is further configured to transmit fifth information to the second device, the fifth information being used for configuring the measurement signal.

[0358] In a possible implementation, the possible implementation and description of the fifth information can refer to the corresponding content in the embodiments of FIGS. 6-10, which are not described here again.

[0359] For other implementations, refer to the related descriptions in the foregoing embodiments of FIGS. 6-10, which are not described here again.

[0360] It should be understood that the specific processes in which the modules perform the corresponding processes are described in the foregoing method embodiments, which are not described here again for the sake of brevity.

[0361] The processing module 1102 in the foregoing embodiments can be implemented by at least one processor or processor-related circuit. The transceiver module 1101 can be implemented by a transceiver or transceiver-related circuit. The transceiver module 1101 can also be referred to as a communication module or a communication interface. The storage module can be implemented by at least one memory.

[0362] The present application also provides another communication apparatus. FIG. 12 is another structural schematic diagram of a communication apparatus according to an embodiment of the present application. Referring to FIG. 12, the communication apparatus 1200 includes a processor 1201.

[0363] Optionally, the communication apparatus 1200 further includes a memory 1202.

[0364] Optionally, the communication apparatus 1200 further includes a transceiver 1203.

[0365] In a possible implementation, the processor 1201, the memory 1202, and the transceiver 1203 are connected through a bus respectively, and the memory 1202 stores computer instructions.

[0366] In a possible implementation, when the communication apparatus 1200 includes an access network device, or a CU or a DU included in the access network device, or a component (for example, a chip), a module or a unit in the access network device, the communication apparatus 1200 can be used to execute the steps performed by the first device and / or the second device in the foregoing method embodiments, which can refer to the related descriptions in the foregoing method embodiments.

[0367] In another possible implementation, when the communication apparatus 1200 includes a core network device, or a component (for example, a chip), a module or a unit in the core network device, the communication apparatus 1200 can be used to execute the steps performed by the core network device in the foregoing method embodiments, which can refer to the related descriptions in the foregoing method embodiments.

[0368] Optionally, the processing module 1102 in the embodiment shown in FIG. 11 can be the processor 1201, and the transceiver module 1101 in the embodiment shown in FIG. 11 can be the transceiver 1202. Alternatively, the processing module 1102 in the embodiment shown in FIG. 11 can be the processor 1201, and the transceiver module 1101 in the embodiment shown in FIG. 11 can be the transceiver 1202.

[0369] The embodiment of the present application further provides a communication apparatus. FIG. 13 is another structural schematic diagram of the communication apparatus according to the embodiment of the present application. Referring to FIG. 13, the communication apparatus 1300 can be a terminal device in the method embodiments, or a component (for example, a chip), a module or a unit of the terminal device in the method embodiments. The communication apparatus 1300 can be used to execute the steps performed by the first device and / or the second device in the method embodiments, and the related description can be referred to the method embodiments.

[0370] The processor is mainly used for processing data or signals, controlling the communication apparatus, executing corresponding software programs, processing data of the software programs, etc.

[0371] It should be noted that the signal processing algorithm of the processor has weak capability and cannot perform complex signal processing algorithm.

[0372] The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for conversion between baseband signals and radio frequency signals and processing of the radio frequency signals.

[0373] The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves.

[0374] Optionally, the communication apparatus 1300 further includes an input and output apparatus, for example, a touch screen, a display screen, a keyboard, etc., which are mainly used for receiving data input by a user and outputting data to the user.

[0375] When data needs to be transmitted, the processor performs baseband processing on the data to be transmitted, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal, and transmits the radio frequency signal in the form of electromagnetic waves through the antenna. When data is transmitted to the communication apparatus, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

[0376] For the convenience of description, only one memory and one processor are shown in FIG. 13. In actual products of the communication apparatus, one or more processors and one or more memories can exist. The memory can also be referred to as a storage medium or a storage device, etc. The memory can be arranged independently of the processor, or can be integrated with the processor, and the embodiment of the present application does not limit this.

[0377] In the embodiments of the present application, the antenna and the radio frequency circuit with the transceiving function can be regarded as a transceiving unit of the communication device, and the processor with the processing function can be regarded as a processing unit of the communication device. As shown in FIG. 13, the communication device 1300 includes a transceiving unit 1310 and a processing unit 1320. The transceiving unit can also be referred to as a transceiver, a transceiving device, etc. The processing unit can also be referred to as a processor, a processing board, a processing module, a processing device, etc.

[0378] Optionally, the devices for implementing the receiving function in the transceiving unit 1310 can be regarded as a receiving unit, and the devices for implementing the sending function in the transceiving unit 1310 can be regarded as a sending unit, that is, the transceiving unit 1310 includes the receiving unit and the sending unit. The transceiving unit can also be referred to as a transceiver, a transceiving device, or a transceiving circuit, etc. The receiving unit can also be referred to as a receiver, a receiving device, or a receiving circuit, etc. The sending unit can also be referred to as a transmitter, a transmitting device, or a transmitting circuit, etc.

[0379] It should be understood that the transceiving unit 1310 is configured to perform the sending operation and the receiving operation of the first device and / or the second device in the method embodiments, and the processing unit 1320 is configured to perform other operations of the first device and / or the second device in the method embodiments, except for the transceiving operation.

[0380] When the communication device is a chip, the chip includes the transceiving unit and the processing unit. The transceiving unit can be an input / output circuit or a communication interface, and the processing unit is a processor or a microprocessor integrated on the chip, or an integrated circuit or a logic circuit. In the method embodiments, the sending operation corresponds to the output of the input / output circuit, and the receiving operation corresponds to the input of the input / output circuit.

[0381] The present application also provides another communication system, which includes the first device and the core network device. The first device is configured to perform all or part of the steps performed by the first device in the embodiments shown in FIGS. 6-10, and the core network device is configured to perform all or part of the steps performed by the core network device in the embodiments shown in FIGS. 6-10.

[0382] The present application also provides another communication system, which includes the first device, the second device and the core network device. The first device is configured to perform all or part of the steps performed by the first device in the embodiments shown in FIGS. 6-10, the second device is configured to perform all or part of the steps performed by the second device in the embodiments shown in FIGS. 6-10, and the core network device is configured to perform all or part of the steps performed by the core network device in the embodiments shown in FIGS. 6-10.

[0383] The embodiment of the present application further provides a computer program product comprising computer instructions, which, when executed on a computer, cause the computer to perform the method of the embodiment shown in FIGS. 6-10.

[0384] The embodiment of the present application further provides a computer readable storage medium comprising computer instructions, which, when executed on a computer, cause the computer to perform the method of the embodiment shown in FIGS. 6-10.

[0385] The embodiment of the present application further provides a chip device comprising a processor, configured to invoke computer programs or computer instructions stored in a memory to cause the processor to perform the method of the embodiment shown in FIGS. 6-10.

[0386] Optionally, the processor is coupled with the memory through an interface.

[0387] Optionally, the chip device further comprises the memory, and the memory stores the computer programs or computer instructions.

[0388] Any processor mentioned above can be a general central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling execution of the programs of the method of the embodiment shown in FIGS. 6-10. Any memory mentioned above can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM), and the like.

[0389] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented by other means. For example, the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0390] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, i.e., they can be located in one place or distributed on a plurality of network units. According to actual needs, some or all of the units can be selected to achieve the purpose of the embodiment.

[0391] In addition, each function unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software function unit.

[0392] When the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on such understanding, the part of the technical solutions of the present application that essentially make contributions or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application.

[0393] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

An information indication method, characterized in that, The method is applied to a first device, and the method includes: Send a first message indicating the channel difference between the real channel and the twin channel. The real channel is the signal transmission channel between the first device and the second device, and the twin channel is the simulated channel of the real channel in the channel environment information. The method according to claim 1, characterized in that, The first information includes one or more of the following: The time-domain difference between the real channel and the twin channel; The difference between the real channel and the twin channel in the frequency domain; Alternatively, the difference between the real path and the twin path, where the real path is one or more signal transmission paths included in the real channel, and the twin path is one or more signal transmission paths included in the twin channel. The method according to claim 2, characterized in that, The time-domain difference between the real channel and the twin channel includes one or more of the following: The difference in channel impulse response (CIR) between the real channel and the twin channel; Alternatively, the power delay distribution (PDP) difference between the real channel and the twin channel; The frequency domain difference between the real channel and the twin channel includes one or more of the following information: The difference in channel frequency response (CFR) between the real channel and the twin channel; Alternatively, the CFR power difference between the real channel and the twin channel; The difference between the real path and the twin path includes one or more of the following: The difference between the energy value of the real path and the energy value of the twin path; The difference between the angle value of the real path and the angle value of the twin path; The difference between the phase value of the real path and the phase value of the twin path; Alternatively, the difference between the latency value of the real path and the latency value of the twin path. The method according to any one of claims 1-3 is characterized in that, The twin channel is generated based on environmental information between the first device and the second device. The method according to claim 4, characterized in that, The environmental information includes one or more of the following: Map information of the network environment, wherein the network environment includes the first device and the second device; Location information of point clouds in the network environment; The intensity information of the point cloud; Alternatively, the point cloud type information indicates the object type corresponding to the point cloud. The method according to any one of claims 3-5 is characterized in that, The first information indicates the channel difference between the real channel and the twin channel, specifically: the first information indicates the amount of difference between the channel characteristics of the real channel and the channel characteristics of the twin channel, wherein, The channel characteristics of the real channel include: the real channel impulse response (CIR) channel H of the real channel. cir and / or the true channel frequency domain response CFR channel H cfr ; The channel characteristics of the twin channel include: the twin CIR channel of the twin channel. and / or twin CFR channels The method according to claim 6, characterized in that, The CIR difference between the real channel and the twin channel includes one or more of the following information: The difference between the CIR of the real CIR channel and the CIR of the twin CIR channel at each time-domain sampling point; The average difference between the CIR of the real CIR channel and the CIR of the twin CIR channel at each time domain sampling point; The difference between the CIR amplitude value of the real CIR channel and the CIR amplitude value of the twin CIR channel at each time domain sampling point; The average of the differences between the CIR amplitude value of the real CIR channel and the CIR amplitude value of the twin CIR channel at each time domain sampling point; The difference between the CIR of the target sampling point in the real CIR channel and the CIR of the target sampling point in the twin CIR channel, and the time-domain location of the target sampling point; The difference between the CIR amplitude value of the target sampling point in the real CIR channel and the CIR amplitude value of the target sampling point in the twin CIR channel, and the time domain position of the target sampling point; The difference between the CIR standard deviation of the real CIR channel and the CIR standard deviation of the twin CIR channel; Alternatively, the difference between the standard deviation of the CIR amplitude value of the real CIR channel and the standard deviation of the CIR amplitude value of the twin CIR channel. The method according to claim 6, characterized in that, The power delay distribution (PDP) difference between the real channel and the twin channel includes: The difference between the PDP of the real CIR channel and the PDP of the twin CIR channel at each time domain sampling point; The average of the differences between the PDP of the real CIR channel and the PDP of the twin CIR channel at each time domain sampling point; The difference between the PDP of the target sampling point of the real CIR channel and the PDP of the target sampling point of the twin CIR channel, and the time domain position of the target sampling point; The difference between the standard deviation of the PDP of the real CIR channel and the standard deviation of the PDP of the twin CIR channel. The method according to claim 6, characterized in that, The channel frequency response (CFR) difference between the real channel and the twin channel includes: The difference between the CFR of the real CFR channel and the CFR of the twin CFR channel at each frequency domain sampling point; The average value of the difference between the CFR of the real CFR channel and the CFR of the twin CFR channel at each frequency domain sampling point; The difference between the CFR amplitude value of the real CFR channel and the CFR amplitude value of the twin CFR channel at each frequency domain sampling point; The average of the differences between the CFR amplitude value of the real CFR channel and the CFR amplitude value of the twin CFR channel at each frequency domain sampling point; The difference between the CFR of the target sampling point of the real CFR channel and the CFR of the target sampling point of the twin CFR channel, and the frequency domain position of the target sampling point; The difference between the CFR amplitude value of the target sampling point in the real CFR channel and the CFR amplitude value of the target sampling point in the twin CFR channel, and the frequency domain position of the target sampling point; The difference between the CFR standard deviation of the real CFR channel and the CFR standard deviation of the twin CFR channel; Alternatively, the difference between the standard deviation of the CFR amplitude value of the real CFR channel and the standard deviation of the CFR amplitude value of the twin CFR channel. The method according to claim 6, characterized in that, The CFR power difference between the real channel and the twin channel includes one or more of the following information: The difference between the CFR power of the real CFR channel and the CFR power of the twin CFR channel at each frequency domain sampling point; The average value of the difference between the CFR power of the real CFR channel and the CFR power of the twin CFR channel at each frequency domain sampling point; The difference between the PDP of the target sampling point of the real CFR channel and the PDP of the target sampling point of the twin CFR channel, and the frequency domain position of the target sampling point; The difference between the standard deviation of CFR power of the real CFR channel and the standard deviation of CFR of the twin CFR channel. The method according to any one of claims 1-10, characterized in that, The first information also includes one or more of the following: The type of measurement signal in the actual channel is measured; Measure the channel bandwidth of the actual channel; Measure the antenna port of the actual channel; Location information of the first device in a real network; The location information of the second device in the real network; Location information of the first device in the twin network; The location information of the second device in the twin network; The identification information of the first device; Alternatively, the identification information of the second device, wherein the real network is the network where the real channel is located, the twin network is the network where the twin channel is located, and the twin channel is the simulated channel of the real channel in the channel environment information. The method according to any one of claims 1-11, characterized in that, The method further includes: Receive second information, the second information being used to configure the first device to report the first information, the second information including one or more of the following: The reporting cycle of the first piece of information; The time-domain resources used for reporting the first information; The first indication information is used to indicate the type of the first information that the first device needs to report. The type of the first information includes one or more of the following: the difference value between the real channel and the twin channel in the time domain, the difference value between the real channel and the twin channel in the frequency domain, or the difference value between the real path and the twin path. The real path is one or more signal transmission paths included in the real channel, and the twin path is one or more signal transmission paths included in the twin channel. The second indication information is used to indicate the reporting triggering condition of the first information; Alternatively, a third indication information may be provided, which indicates the measurement signal on which the first information is based. The method according to any one of claims 1-12 is characterized in that, The method further includes: Receive third information from the second device, the third information including: The signal transmission power of the measurement signal, and / or the precoding matrix of the measurement signal, wherein the measurement signal is used to determine the first information. The method according to any one of claims 1-13 is characterized in that, The method further includes: Send a fourth message, which indicates that the first device supports acquiring the twin channel. The method according to any one of claims 1-4, characterized in that, When the first device and the second device are different devices, the real channel is the signal transmission channel between the first device and the second device; When the first device and the second device are the same device, the real channel is the signal transmission channel between the first device and the obstacle, and between the obstacle and the first device. An information indication method, characterized in that, The method is applied to core network equipment, and the method includes: Send second information to the first device, the second information being used to configure the first information reported by the first device; Receive the first information from the first device, the first information indicating the channel difference between the real channel and the twin channel. The real channel is the signal transmission channel between the first device and the second device, and the twin channel is the simulated channel of the real channel in the channel environment information. The method according to claim 16, characterized in that, The second information includes one or more of the following: The reporting cycle of the first piece of information; The time-domain resources used for reporting the first information; First indication information, the first indication information is used to indicate the type of the first information that the first device needs to report; The second indication information is used to indicate the conditions under which the first device triggers the reporting of the first information; Alternatively, a third indication information may be provided, which instructs the first device to determine the measurement signal on which the first information is based. The method according to claim 16 or 17, characterized in that, The method further includes: Receive fourth information from the first device, the fourth information being used to indicate that the first device supports acquiring the twin channel. The method according to any one of claims 16-18 is characterized in that, The method further includes: A fifth message is sent to the second device, the fifth message being used to configure the measurement signal. The method according to claim 19, characterized in that, The fifth piece of information also includes: The fourth indication information is used to instruct the second device to send third information to the first device. The third information includes: the signal transmission power of the measurement signal, and / or the precoding matrix of the measurement signal, wherein the measurement signal is used to determine the first information. The method according to any one of claims 16-20 is characterized in that, The first information includes one or more of the following: The time-domain difference between the real channel and the twin channel; The difference between the real channel and the twin channel in the frequency domain; Alternatively, the difference between the real path and the twin path, where the real path is one or more signal transmission paths included in the real channel, and the twin path is one or more signal transmission paths included in the twin channel. The method according to claim 21, characterized in that, The time-domain difference between the real channel and the twin channel includes one or more of the following: The difference in channel impulse response (CIR) between the real channel and the twin channel; Alternatively, the power delay distribution (PDP) difference between the real channel and the twin channel; The frequency domain difference between the real channel and the twin channel includes one or more of the following information: The difference in channel frequency response (CFR) between the real channel and the twin channel; Alternatively, the CFR power difference between the real channel and the twin channel; The difference between the real path and the twin path includes one or more of the following: The difference between the energy value of the real path and the energy value of the twin path; The difference between the angle value of the real path and the angle value of the twin path; The difference between the phase value of the real path and the phase value of the twin path; Alternatively, the difference between the latency value of the real path and the latency value of the twin path. The method according to any one of claims 16-22 is characterized in that, The twin channel is generated based on environmental information between the first device and the second device. The method according to claim 23, characterized in that, The environmental information includes one or more of the following: Map information of the network environment, wherein the network environment includes the first device and the second device; Location information of point clouds in the network environment; The intensity information of the point cloud; Alternatively, the point cloud type information indicates the object type corresponding to the point cloud. The method according to any one of claims 16-24 is characterized in that, The first information indicates the channel difference between the real channel and the twin channel, specifically: the first information indicates the amount of difference between the channel characteristics of the real channel and the channel characteristics of the twin channel, wherein, The channel characteristics of the real channel include: the real channel impulse response (CIR) channel H of the real channel. cir and / or the true channel frequency domain response CFR channel H cfr ; The channel characteristics of the twin channel include: the twin CIR channel of the twin channel. and / or twin CFR channels The method according to claim 25, characterized in that, The CIR difference between the real channel and the twin channel includes one or more of the following information: The difference between the CIR of the real CIR channel and the CIR of the twin CIR channel at each time-domain sampling point; The average difference between the CIR of the real CIR channel and the CIR of the twin CIR channel at each time domain sampling point; The difference between the CIR amplitude value of the real CIR channel and the CIR amplitude value of the twin CIR channel at each time domain sampling point; The average of the differences between the CIR amplitude value of the real CIR channel and the CIR amplitude value of the twin CIR channel at each time domain sampling point; The difference between the CIR of the target sampling point in the real CIR channel and the CIR of the target sampling point in the twin CIR channel, and the time-domain location of the target sampling point; The difference between the CIR amplitude value of the target sampling point in the real CIR channel and the CIR amplitude value of the target sampling point in the twin CIR channel, and the time domain position of the target sampling point; The difference between the CIR standard deviation of the real CIR channel and the CIR standard deviation of the twin CIR channel; Alternatively, the difference between the standard deviation of the CIR amplitude value of the real CIR channel and the standard deviation of the CIR amplitude value of the twin CIR channel. The method according to claim 25, characterized in that, The power delay distribution (PDP) difference between the real channel and the twin channel includes: The difference between the PDP of the real CIR channel and the PDP of the twin CIR channel at each time domain sampling point; The average of the differences between the PDP of the real CIR channel and the PDP of the twin CIR channel at each time domain sampling point; The difference between the PDP of the target sampling point of the real CIR channel and the PDP of the target sampling point of the twin CIR channel, and the time domain position of the target sampling point; The difference between the standard deviation of the PDP of the real CIR channel and the standard deviation of the PDP of the twin CIR channel. The method according to claim 25, characterized in that, The channel frequency response (CFR) difference between the real channel and the twin channel includes: The difference between the CFR of the real CFR channel and the CFR of the twin CFR channel at each frequency domain sampling point; The average value of the difference between the CFR of the real CFR channel and the CFR of the twin CFR channel at each frequency domain sampling point; The difference between the CFR amplitude value of the real CFR channel and the CFR amplitude value of the twin CFR channel at each frequency domain sampling point; The average of the differences between the CFR amplitude value of the real CFR channel and the CFR amplitude value of the twin CFR channel at each frequency domain sampling point; The difference between the CFR of the target sampling point of the real CFR channel and the CFR of the target sampling point of the twin CFR channel, and the frequency domain position of the target sampling point; The difference between the CFR amplitude value of the target sampling point in the real CFR channel and the CFR amplitude value of the target sampling point in the twin CFR channel, and the frequency domain position of the target sampling point; The difference between the CFR standard deviation of the real CFR channel and the CFR standard deviation of the twin CFR channel; Alternatively, the difference between the standard deviation of the CFR amplitude value of the real CFR channel and the standard deviation of the CFR amplitude value of the twin CFR channel. The method according to claim 25, characterized in that, The CFR power difference between the real channel and the twin channel includes one or more of the following information: The difference between the CFR power of the real CFR channel and the CFR power of the twin CFR channel at each frequency domain sampling point; The average value of the difference between the CFR power of the real CFR channel and the CFR power of the twin CFR channel at each frequency domain sampling point; The difference between the PDP of the target sampling point of the real CFR channel and the PDP of the target sampling point of the twin CFR channel, and the frequency domain position of the target sampling point; The difference between the standard deviation of CFR power of the real CFR channel and the standard deviation of CFR of the twin CFR channel. The method according to any one of claims 16-29 is characterized in that, The first information also includes one or more of the following: The type of measurement signal in the actual channel is measured; Measure the channel bandwidth of the actual channel; Measure the antenna port of the actual channel; Location information of the first device in a real network; The location information of the second device in the real network; Location information of the first device in the twin network; The location information of the second device in the twin network; The identification information of the first device; Alternatively, the identification information of the second device, wherein the real network is the network where the real channel is located, the twin network is the network where the twin channel is located, and the twin channel is the simulated channel of the real channel in the channel environment information. The method according to any one of claims 17-30 is characterized in that, When the first device and the second device are different devices, the real channel is the signal transmission channel between the first device and the second device; When the first device and the second device are the same device, the real channel is the transmission channel for signals between the first device and the obstacle, and between the obstacle and the second device. A communication system, characterized in that, The communication system includes: a first device, a second device, and core network equipment. The second device sends a measurement signal to the first device; The first device sends first information to the core network device based on the measurement signal. The first information indicates the channel difference between the real channel and the twin channel. The real channel is the signal transmission channel between the first device and the second device, and the twin channel is the simulated channel of the real channel in the channel environment information. The communication system according to claim 32 is characterized in that, The communication system also includes: The core network device sends fifth information to the second device, the fifth information being used to configure the measurement signal; The core network device sends second information to the first device, the second information being used to configure the first information reported by the first device; The first device receives the measurement signal; The first device sends the first information to the core network device based on the measurement signal and the second information. A communication device, characterized in that, Includes a module for performing the method as described in any one of claims 1 to 31. A communication device, characterized in that, It includes at least one processor coupled to a memory; the at least one processor is used to perform the method as described in any one of claims 1 to 31. The communication device according to claim 35 is characterized in that, The communication device is a chip or chip system. A readable storage medium, characterized in that, The storage medium stores a computer program or instructions, which, when executed by a communication device, implement the method as described in any one of claims 1 to 31. A computer program product, characterized in that, When the computer program product is run on a computer, it causes the computer to perform the method as described in any one of claims 1 to 31.

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