Information transmission method, communication device, communication system and storage medium

Abstract

The embodiment of the invention discloses an information transmission method, a communication device, a communication system and a storage medium, which are applied to the field of communication and are used for reducing the reporting overhead of a measurement result. The method provided by the embodiment of the invention comprises the following steps: receiving a first reference signal, wherein a frequency domain resource in which the first reference signal is located comprises a first frequency domain resource and a second frequency domain resource; first information is sent, the first information comprises a first measurement value and a first difference value, the first measurement value is a speed or Doppler frequency corresponding to a first reference signal located in a first frequency domain resource, and the first difference value is a difference value between a second measurement value and the first measurement value; the second measurement value is the speed or Doppler frequency corresponding to the first reference signal located in the second frequency domain resource. According to the embodiment of the invention, the target speed can be calculated according to the reported first information when speed measurement ambiguity occurs, so that the reference signal overhead is reduced, and the first difference value is used for replacing the second measurement value to reduce the reporting overhead of the measurement result.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and in particular to an information transmission method, a communication device, a communication system, and a storage medium. Background Art

[0002] In a sensing scenario, a transmitting device radiates electromagnetic waves into the surrounding environment to send a reference signal. A receiving device receives the reference signal, which is reflected by the surrounding environment or directly received. By analyzing and comparing the received reference signal with the transmitted reference signal, relevant information about the surrounding environment can be perceived, such as the presence of the target, the number of targets, the location and speed of each target, etc., or the relative distance, angle, and speed between the transmitting device and the target receiving device can be measured.

[0003] To measure the target speed, the transmitting device usually needs to periodically send a reference signal. The receiving device measures the received reference signal and obtains measurement results related to the target speed, such as Doppler frequency information. When the target's true speed is greater than the maximum unambiguous speed, speed measurement ambiguity occurs. The true speed can be expressed as V truth =v+kV max , where k is the integer ambiguity, V max It represents the maximum unambiguous speed determined by the periodic reference signal. At this time, the only available speed is the fuzzy speed v obtained by taking the modulus of the true speed and the maximum unambiguous speed according to the measurement result, and the true speed cannot be obtained.

[0004] To avoid speed measurement ambiguity, the maximum speed expected to be measured must be less than the maximum unambiguous speed determined by the periodic reference signal. This can result in significant reference signal overhead, especially at high frequencies. Furthermore, the receiving device typically needs to report measurement results to the transmitting device or a third-party device, so reducing the reporting overhead is also a challenge. Summary of the Invention

[0005] The present application discloses an information transmission method, a communication device, a communication system and a storage medium, which are applied in the field of communications and are used to reduce the reporting overhead of measurement results.

[0006] In a first aspect, the present application provides an information transmission method. Optionally, the method is performed by a first device, which can be a network device, a component applied to the network device (such as a processor, chip, or chip system), a logic module or software capable of implementing all or part of the network device's functions, a terminal device, a component or device applied to the terminal device (such as a processor, chip, or chip system), or a logic module or software capable of implementing all or part of the terminal device's functions. In this method, the first device receives a first reference signal from a second device. The first reference signal can be a reference signal or a reflected signal of a reference signal. The frequency domain resources in which the first reference signal is located include at least a first frequency domain resource and a second frequency domain resource. The first device obtains a first measurement value based on the first reference signal received on the first frequency domain resource and obtains a second measurement value based on the first reference signal received on the second frequency domain resource. The first measurement value is one or more speeds or Doppler frequencies corresponding to the first frequency domain resource, and the second measurement value is one or more speeds or Doppler frequencies corresponding to the second frequency domain resource. The first device sends first information, wherein the first information includes the first measurement value and a first difference, where the first difference is the difference between the second measurement value and the first measurement value. The first measurement value and the second measurement value may be used to calculate the integer ambiguity of the true speed when speed measurement ambiguity occurs.

[0007] In this embodiment, since the integer ambiguity can be calculated based on the first information, the second device does not need to reduce the signal transmission period to avoid velocity measurement ambiguity, thereby reducing the reference signal transmission overhead. Furthermore, since the first difference replaces the second measurement value in the first information, and the range of the second measurement value is larger than the range of the first difference, the measurement result reporting overhead is reduced.

[0008] The second aspect of the present application provides an information transmission method, optionally, the execution subject of the method is a second device, and the second device can be a network device, or a component applied to the network device (such as a processor, chip, or chip system, etc.), or a logic module or software that can realize all or part of the network device function, or a terminal device, or a component or device applied to the terminal device (such as a processor, chip, or chip system, etc.), or a logic module or software that can realize all or part of the terminal device function. In this method, the second device sends a first reference signal to the target or the first device, and the frequency domain resources where the first reference signal is located include first frequency domain resources and second frequency domain resources. The second device can receive the first information from the first device, wherein the first information includes a first measurement value and a first difference, and the first difference is the difference between the second measurement value and the first measurement value. The first measurement value and the second measurement value can be used to calculate the integer ambiguity of the true speed when speed measurement ambiguity occurs.

[0009] In this embodiment, since the second device can obtain the first information by transmitting the first reference signal, thereby calculating the target's true speed when speed measurement ambiguity occurs, the second device does not need to reduce the signal transmission period to avoid speed measurement ambiguity, thereby reducing the reference signal transmission overhead.

[0010] A third aspect of the present application provides an information transmission method. Optionally, the method is performed by a third device, which can be a network element or server responsible for perception functions in the core network, or an application server that processes perception services. In this method, the third device receives first information from a first device, where the first information includes a first measurement value and a first difference, where the first difference is the difference between the second measurement value and the first measurement value. The first measurement value and the second measurement value can be used to calculate the integer ambiguity of the true speed when speed measurement ambiguity occurs.

[0011] In a fourth aspect, the present application provides a communication device, which may be a network device, a component applied to a network device (e.g., a processor, a chip, or a chip system), a logic module or software capable of implementing all or part of the network device's functions, or a terminal device, a component or device applied to a terminal device (e.g., a processor, a chip, or a chip system), or a logic module or software capable of implementing all or part of the terminal device's functions. The communication device includes:

[0012] A receiving unit, configured to receive a first reference signal, where the frequency domain resources where the first reference signal is located include first frequency domain resources and second frequency domain resources;

[0013] A sending unit is used to send first information, the first information including a first measurement value and a first difference, the first measurement value is a speed or Doppler frequency corresponding to a first reference signal located in a first frequency domain resource, the first difference is a difference between a second measurement value and the first measurement value, and the second measurement value is a speed or Doppler frequency corresponding to the first reference signal located in a second frequency domain resource.

[0014] Based on the first and fourth aspects of this application, in some optional implementations, the first device can send the first information to the second device, or send the first information to the network element or server responsible for the perception function in the core network, or send the first information to the application server that processes the perception service.

[0015] In a fifth aspect, the present application provides a communication device, which may be a network device, a component applied to a network device (e.g., a processor, a chip, or a chip system), a logic module or software capable of implementing all or part of the network device's functions, or a terminal device, a component or device applied to a terminal device (e.g., a processor, a chip, or a chip system), or a logic module or software capable of implementing all or part of the terminal device's functions. The communication device includes:

[0016] A sending unit, configured to send a first reference signal, where the frequency domain resources where the first reference signal is located include first frequency domain resources and second frequency domain resources;

[0017] A receiving unit is used to receive first information, the first information including a first measurement value and a first difference value, the first measurement value is a speed or Doppler frequency corresponding to a first reference signal located in a first frequency domain resource, the first difference value is a difference between a second measurement value and the first measurement value, and the second measurement value is a speed or Doppler frequency corresponding to the first reference signal located in a second frequency domain resource.

[0018] Based on the second and fifth aspects of the present application, in some optional implementations, the second device may perform perception settlement based on the first information reported by the first device, for example, calculating the integer ambiguity of the target's true speed to obtain the target's true speed.

[0019] Based on the first to fifth aspects of the embodiments of the present application, in some optional embodiments, the first difference can be expressed by the formula mod(x2-x1,X) or mod(x1-x2,X), where mod represents a modulo operation, x2 represents the second measurement value, x1 represents the first measurement value, and X represents the difference between the maximum value and the minimum value of the second measurement value.

[0020] Based on the first to fifth aspects of the embodiments of the present application, in some optional embodiments, when x2 is greater than or equal to x1, the first difference is x2-x1, and when x2 is less than x1, the first difference is x2+X-x1; or, when x1 is greater than or equal to x2, the first difference is x1-x2, and when x1 is less than x2, the first difference is x1-x2+X.

[0021] In this embodiment, since the value range of the first difference, ie, mod(x2-x1, X) or mod(x1-x2, X), is smaller than the value range of the second measurement value x2, the reporting overhead of the measurement result is reduced.

[0022] Based on the first to fifth aspects of the embodiments of the present application, in some optional implementations, the first information also includes a third measurement value and a fourth measurement value, or a third measurement value and a second difference, wherein the third measurement value is the amplitude or phase corresponding to the first measurement value, the fourth measurement value is the amplitude or phase corresponding to the second measurement value, and the second difference is the difference between the fourth measurement value and the third measurement value.

[0023] In this embodiment, the first device includes the amplitude or phase corresponding to the reported speed or Doppler frequency in the first information reported, which can improve the accuracy of calculating the true speed of the target.

[0024] Based on the first to fifth aspects of the embodiments of the present application, in some optional implementations, the period of the first reference signal is greater than a first threshold, and the first threshold is related to the maximum speed expected to be measured.

[0025] In this implementation, since the period of the first reference signal is greater than the first threshold, the number of times the first reference signal is sent within the same duration is reduced, thereby reducing the reference signal overhead.

[0026] Based on the first to fifth aspects of the embodiments of the present application, in some optional embodiments, the difference between the frequency corresponding to the second frequency domain resource and the frequency corresponding to the first frequency resource is less than a second threshold, and the second threshold is related to one or more of the period of the first reference signal, the maximum speed expected to be measured, and the frequency corresponding to the first frequency resource.

[0027] In this embodiment, by ensuring that the difference between the frequency corresponding to the second frequency domain resource and the frequency corresponding to the first frequency resource is less than the second threshold, it is beneficial to calculate the integer ambiguity based on the ambiguous speed or Doppler frequency corresponding to the two frequencies. There is no need to reduce the signal transmission period to avoid speed measurement ambiguity, thereby reducing the transmission overhead of the reference signal.

[0028] Based on the first to fifth aspects of the embodiments of the present application, in some optional implementations, the second device will also send second information, and the first device will receive the second information, which includes one or more of the maximum speed expected to be measured, the maximum integer ambiguity expected to be measured, and the value range of the first difference.

[0029] In this implementation, the first device may perform a differential operation on the first measurement value and the second measurement value based on the second information to reduce reporting overhead.

[0030] Based on the first to fifth aspects of the embodiments of the present application, in some optional implementations, the first information also includes a first frequency corresponding to the first frequency domain resource and a second frequency corresponding to the second frequency domain resource, or the first frequency and a third difference, where the third difference is the difference between the second frequency and the first frequency.

[0031] Based on the first to fifth aspects of the embodiments of the present application, in some optional implementations, the first reference signal may be multiple signals, including a second reference signal and a third reference signal, the second reference signal is located in the first frequency domain resource, the third reference signal is located in the second frequency domain resource, and the second reference signal and the third reference signal have the same period.

[0032] Based on the first to fifth aspects of the embodiments of the present application, in some optional implementations, the time domain resource where the second reference signal is located is the same as the time domain resource where the third reference signal is located, or the time interval between the time domain resource where the second reference signal is located and the time domain resource where the third reference signal is located is less than a third threshold, that is, the second reference signal can be sent simultaneously with the third reference signal, or the interval between the sending times is less than the third threshold.

[0033] Based on the first to fifth aspects of the embodiments of the present application, in some optional implementations, the first information corresponds to one or more targets, each target corresponding to a path. The speed in the first measurement value or the second measurement value indicates the speed of the one or more paths, and the Doppler frequency in the first measurement value or the second measurement value indicates the Doppler frequency of the one or more paths.

[0034] Based on the first to fifth aspects of the embodiments of the present application, in some optional implementations, the first measurement value is not equal to the second measurement value, and speed measurement ambiguity occurs.

[0035] Based on the first to fifth aspects of the embodiments of the present application, in some optional implementations, the first measurement value and the second measurement value used to obtain the first difference are associated.

[0036] In a sixth aspect of the present application, a communication device is provided, which may be a terminal device, or a component or device applied to a terminal device (such as a processor, chip, or chip system, etc.), or a logic module or software that can realize all or part of the functions of the terminal device. Alternatively, the communication device may be a network device, or a component applied to a network device (such as a processor, chip, or chip system, etc.), or a logic module or software that can realize all or part of the functions of the network device. Alternatively, the communication device may be a network element or server responsible for the perception function in the core network, or an application server that processes the perception service.

[0037] The communication device comprises:

[0038] A processor is configured to execute a program so that the communication device executes the method according to the first aspect, the second aspect, or the third aspect and any possible implementation thereof.

[0039] Optionally, the communication device further includes a memory, and the processor is coupled to the memory; the memory is used to store programs.

[0040] A seventh aspect of an embodiment of the present application provides a chip or chip system, which includes at least one processor and a communication interface, the communication interface and the at least one processor are interconnected through lines, and the at least one processor is used to run computer programs or instructions to perform the communication method described in any one of the possible implementation methods of the first to third aspects above.

[0041] The communication interface in the chip may be an input / output interface, a pin or a circuit, etc.

[0042] In one possible implementation, the chip or chip system described above in this application further includes at least one memory, wherein instructions are stored in the at least one memory. The memory may be a storage unit within the chip, such as a register or cache, or a storage unit of the chip, such as a read-only memory or random access memory.

[0043] An eighth aspect of the embodiments of the present application provides a communication system, including a communication device that performs the first aspect and any possible implementation thereof, and a communication device that performs the second aspect and any possible implementation thereof;

[0044] Or, it includes a communication device that performs the first aspect and any possible implementation thereof, a communication device that performs the second aspect and any possible implementation thereof, and a communication device that performs the third aspect and any possible implementation thereof.

[0045] A ninth aspect of an embodiment of the present application provides a computer-readable storage medium comprising instructions, which, when executed on a computer, enables the computer to execute the method described in the first aspect above, or enables the computer to execute the method described in the second aspect above, or enables the computer to execute the method described in the third aspect above.

[0046] The tenth aspect of the embodiment of the present application provides a computer program product containing instructions, which, when run on a computer, enables the computer to execute the method as described in the first aspect above, or enables the computer to execute the method as described in the second aspect above, or enables the computer to execute the method as described in the third aspect above.

[0047] The beneficial effects of the sixth to tenth aspects can be understood by referring to the beneficial effects of the first to fifth aspects and their corresponding implementation methods, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1This is a network architecture diagram in an embodiment of the present application;

[0049] Figure 2 This is a schematic diagram of an application scenario of the information transmission method in an embodiment of the present application;

[0050] Figure 3 This is a schematic diagram of an embodiment of the information transmission method in the embodiment of the present application;

[0051] Figure 4 This is a schematic diagram of an embodiment of a reference signal in an embodiment of the present application;

[0052] Figure 5 This is a schematic diagram of another embodiment of a reference signal in an embodiment of the present application;

[0053] Figure 6 This is a schematic diagram of another embodiment of a reference signal in an embodiment of the present application;

[0054] Figure 7 The relationship between the integer ambiguity and the true speed corresponding to different frequencies in the embodiment of the present application;

[0055] Figure 8 The velocity spectra of two targets at the same frequency in the embodiment of the present application;

[0056] Figure 9 The velocity spectra of two targets at the same frequency in the embodiment of the present application;

[0057] Figure 10 Velocity spectra of two targets at different frequencies in the embodiment of this application;

[0058] Figure 11 Schematic diagram of the Doppler spectra of two targets at different frequencies in an embodiment of the present application;

[0059] Figure 12 Schematic diagram of the Doppler spectra of two targets at different frequencies in an embodiment of the present application;

[0060] Figure 13 Schematic diagram of the Doppler spectra of two targets at different frequencies in an embodiment of the present application;

[0061] Figure 14 Schematic diagram of the Doppler spectra of two targets at different frequencies in an embodiment of the present application;

[0062] Figure 15 Velocity spectrum of a single target at different frequencies in the embodiment of this application;

[0063] Figure 16 Velocity spectrum of a single target at different frequencies in the embodiment of this application;

[0064] Figure 17This is a schematic diagram of another embodiment of the information transmission method in the embodiment of the present application;

[0065] Figure 18 This is a schematic diagram of another embodiment of the information transmission method in the embodiment of the present application;

[0066] Figure 19 This is a schematic diagram of another embodiment of the information transmission method in the embodiment of the present application;

[0067] Figure 20 This is a schematic diagram of an embodiment of a communication device in an embodiment of the present application;

[0068] Figure 21 This is a schematic diagram of another embodiment of a communication device in an embodiment of the present application;

[0069] Figure 22 This is a schematic diagram of another embodiment of a communication device in an embodiment of the present application;

[0070] Figure 23 FIG. 1 is a schematic diagram of another embodiment of a communication device in an embodiment of the present application. DETAILED DESCRIPTION

[0071] Embodiments of the present application disclose an information transmission method, a communication device, a communication system, and a storage medium, which can calculate a target speed based on reported first information when speed measurement ambiguity occurs, thereby reducing reference signal overhead, and replace the second measurement amount with a first difference to reduce the reporting overhead of the measurement result.

[0072] The embodiments of the present application are described below in conjunction with the accompanying drawings. Those skilled in the art will appreciate that, with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0073] The terms "first", "second" etc. in the specification, claims and drawings of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable in appropriate circumstances, and this is merely a way of distinguishing the objects of identical properties when describing them in the embodiments of the present application. In addition, the numbering of the steps in each embodiment introduced by the present application is just to distinguish different steps and is not used to limit the sequential order between the steps. In addition, the terms "comprise" and "have" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0074] In this application, "used to indicate" can include being used for direct indication and being used for indirect indication. When describing that a certain indication information is used to indicate A, it can include that the indication information directly indicates A or indirectly indicates A, and it does not mean that the indication information must carry A.

[0075] In addition, the specific indication method can also be various existing indication methods, such as but not limited to the above-mentioned indication methods and various combinations thereof. The specific details of the various indication methods can be referred to the prior art and will not be repeated herein. As can be seen from the above, for example, when it is necessary to indicate multiple information of the same type, there may be a situation where the indication methods for different information are different. In the specific implementation process, the required indication method can be selected according to specific needs. The embodiment of the present application does not limit the selected indication method. In this way, the indication method involved in the embodiment of the present application should be understood to cover various methods that can enable the party to be indicated to obtain the information to be indicated.

[0076] In the embodiments of the present application, descriptions such as "when...", "in the case of...", "if" and "if" all mean that the device will perform corresponding processing under certain objective circumstances. It does not limit the time, nor does it require the device to perform judgment actions when implemented, nor does it mean that there are other limitations.

[0077] Figure 1 A possible, non-limiting system diagram is shown. Figure 1 As shown, the communication system 10 includes a radio access network (RAN) 100 and a core network (CN) 200. The RAN 100 includes at least one RAN node (e.g., Figure 1 110a and 110b, collectively referred to as 110) and at least one terminal (such as Figure 1 120a-120j in the figure, collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices ( Figure 1 Terminal 120 is wirelessly connected to RAN node 110. RAN node 110 is wirelessly or wiredly connected to core network 200. The core network equipment in core network 200 and RAN node 110 in RAN 100 can be different physical devices, or they can be the same physical device that integrates core network logical functions and radio access network logical functions.

[0078] The RAN 100 may be a cellular system related to the Third Generation Partnership Project (3GPP), such as a 4G or 5G mobile communication system, or a future-oriented evolutionary system (such as a 6G mobile communication system). The RAN 100 may also be an open access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. The RAN 100 may also be a communication system that integrates two or more of the above systems.

[0079] The RAN node 110, sometimes also referred to as access network equipment, RAN entity or access node, constitutes part of the communication system and is used to help terminals achieve wireless access. The multiple RAN nodes 110 in the communication system 10 can be nodes of the same type or different types. In some scenarios, the roles of the RAN node 110 and the terminal 120 are relative, for example, Figure 1 The network element 120i can be a helicopter or a drone, which can be configured as a mobile base station. For the terminals 120j that access the RAN 100 through the network element 120i, the network element 120i is a base station; but for the base station 110a, the network element 120i is a terminal. The RAN node 110 and the terminal 120 are sometimes referred to as communication devices, for example Figure 1 The network elements 110a and 110b can be understood as communication devices with base station functions, and the network elements 120a-120j can be understood as communication devices with terminal functions.

[0080] In one possible scenario, a RAN node may be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next generation NodeB (gNB), a next generation base station in a sixth generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. A RAN node may be a macro base station (e.g. Figure 1 110a in), micro base stations or indoor stations (such as Figure 1110b in the figure), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the RAN node may also be a server, a wearable device, a vehicle or an on-board device, etc. For example, the access network device in the vehicle to everything (V2X) technology may be a road side unit (RSU). All or part of the functions of the RAN node in this application may also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (such as a cloud platform). The RAN node may also be provided with a communication module, circuit or chip that performs the corresponding communication function. The RAN node may also be configured with program instructions for performing the corresponding communication function and corresponding program instructions. The RAN node in this application may also be a logical node, a logical module or software that can implement all or part of the functions of the RAN node.

[0081] In another possible scenario, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be set separately, or they can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0082] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (Open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, this application uses CU, CU-CP, CU-UP, DU and RU as examples for description. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0083] The terminal in this application can be deployed on land, including indoors, outdoors, handheld or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.). The terminal can also be called a terminal device, and the terminal device can be a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc., or a device for providing voice or data connectivity to users. Among them, UE includes handheld devices with wireless communication functions, vehicle-mounted devices (for example, cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed railways, etc.), wearable devices (such as smart watches, smart bracelets, pedometers, etc.) or computing devices. Exemplarily, UE can be a mobile phone or a mobile internet device (MID), etc. A UE may also be an intelligent robot, a robotic arm, workshop equipment, a smart home device (e.g., a refrigerator, a television, an air conditioner, an electric meter, etc.), a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, an in-vehicle terminal, a roadside unit (RSU) with terminal functions, or an aerial device (e.g., an intelligent robot, a hot air balloon, a drone, an airplane), etc. A terminal may also be other devices with terminal functions, for example, a terminal may also be a device that functions as a terminal in device-to-device (D2D) communication.

[0084] In the present application, the terminal may be a terminal in an Internet of Things (IoT) system. IoT is an important component of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection. The terminal in the present application may be a terminal in machine type communication (MTC). The terminal of the present application may be an on-board module, on-board module, on-board component, on-board chip or on-board unit built into a vehicle as one or more components or units. The vehicle may implement the method of the present application through the built-in on-board module, on-board module, on-board component, on-board chip or on-board unit. The terminal of the present application may be a vehicle, such as a car. Therefore, the present application may be applied to Internet of Vehicles, such as vehicle to everything (V2X), long term evolution vehicle (LTE-V), vehicle to vehicle (V2V), etc.

[0085] See also Figure 2 , Figure 2 A possible application scenario of the information transmission method in an embodiment of the present application is shown: in this scenario, the second device 202 is used to configure and send a reference signal, or can directly send a reference signal, and the first device 201 receives the reference signal and obtains a measurement result based on the received signal. Optionally, the network architecture also includes a detection target 203. The second device 202 sends a reference signal to the detection target 203. After the detection target 203 reflects the reference signal, the first device 201 receives the reflected signal of the reference signal and obtains a measurement result based on the reflected signal. After obtaining the measurement result, the first device 201 can report the measurement result to the second device 202, and the second device 202 performs perception settlement based on the measurement result, for example, calculating the true speed of the detection target 203. Optionally, the network architecture also includes a third device 204. The third device 204 can be a network element or server responsible for the perception function in the core network, or an application server that processes the perception service. The first device 201 reports the measurement result to the third device 204, and the third device 204 performs perception settlement, for example, calculating the true speed of the detection target based on the measurement result. Optionally, the third device 204 may also configure a reference signal for the first device.

[0086] Wherein, the first device is capable of realizing one or more functions such as perception, positioning or communication, and the first device is, for example, a terminal device or a functional module provided in a terminal device, such as a chip system or a module in a chip system, or the first device is, for example, a network device or a functional module provided in a network device, such as a chip system or a module in a chip system, etc.; the second device is capable of realizing one or more functions such as perception, positioning or communication, and the second device is, for example, a terminal device or a functional module provided in a terminal device, such as a chip system or a module in a chip system, etc., or the second device is, for example, a network device or a functional module provided in a network device, such as a chip system or a module in a chip system, etc. Wherein, the first device and the second device can be devices of the same type, such as both being terminal devices; or the first device and the second device can also be devices of different types, such as the first device being a terminal device and the second device being a network device, etc., and the embodiments of the present application do not limit this.

[0087] In this application, the form of the terminal is not limited. The device used to implement the function of the terminal can be a terminal; it can also be a device that can support the terminal to implement the function, such as a chip system. The device can be installed in the terminal or used in conjunction with the terminal.

[0088] In this application, the form of the network device is not limited. The device used to implement the function of the network device can be a network device; it can also be a device that can support the network device to implement the function, such as a chip system. The device can be installed in the network device or used in conjunction with the network device.

[0089] For perception systems, speed measurement is an important and basic capability. For example, in smart traffic scenarios, assisted driving and vehicle violation detection are achieved based on the speed of pedestrians or vehicles. In smart home scenarios, speed is an important data in applications such as security monitoring, interactive games, and health detection (for example, determining whether a person has fallen). At present, in order to measure the target speed, it is usually necessary to send a reference signal periodically. According to the reference signals received at different times, information related to the target speed can be obtained, where the maximum unambiguous speed that can be measured is related to the period and frequency of the reference signal. An example of speed measurement based on a reference signal is given below. Taking a target as an example, a reference signal is sent at M time units with a carrier frequency of f, and the sending period is T, that is, the time interval between adjacent time units in the M time units is T, then the received signal at the mth time unit can be expressed as:

[0090]

[0091] Where m = 0, 1, ..., M-1, c is the speed of light, R is the relative distance between the sensing device and the target, v is the relative speed between the sensing device and the target, σ is the power attenuation factor, d TX [m] represents the reference signal sent at the mth time unit.

[0092] Due to the movement of the target, the frequency of the received signal has shifted compared to the frequency of the transmitted signal, where the Doppler can be expressed as:

[0093]

[0094] Doppler can also be called Doppler frequency or Doppler shift. TX [m] can get channel information at different time units:

[0095]

[0096] The Doppler caused by the target's speed or movement will cause phase rotation between different time units m. Therefore, the target's speed can be estimated based on the channel information obtained at different time units. For example, the channel Doppler spectrum can be obtained by Fourier transforming the channel information at different time units. The Doppler spectrum satisfies the formula:

[0097]

[0098] in

[0099]

[0100] g represents the index on the Doppler spectrum, let The peak value on the Doppler spectrum can be obtained, for example hour, Get the peak value, Therefore, based on the position of the peak on the Doppler spectrum The Doppler f caused by target movement can be estimated d , and then estimate the target's speed v. It should be understood that the phase change of the signal is always in the range of 0 to 2π or -π to π. When the target's speed is too large, that is, the Doppler f caused by the target's movement d So large that the actual phase rotation between adjacent time units is 2πf d When T exceeds 2π, the phase rotation between the signals received at adjacent time units cannot reflect the phase rotation caused by the target's true speed. Therefore, the speed obtained based on the received signal is not the target's true speed, that is, speed measurement ambiguity occurs.

[0101] When speed measurement ambiguity occurs, the true speed can be expressed as:

[0102] V truth =v 模糊 +kV max

[0103] Where k is the integer ambiguity, V max is the maximum unambiguous velocity. At this time, the only ambiguous velocity v can be obtained by measuring the true velocity modulo the maximum unambiguous velocity on the Doppler spectrum. 模糊 , the integer ambiguity k cannot be obtained. The maximum unambiguous velocity V max It can be understood that the speed corresponding to the phase rotation between adjacent time units caused by the Doppler caused by target movement is exactly 2π is a critical value.

[0104] To avoid ambiguity in speed measurement, it is necessary to ensure the maximum speed expected to be measured Less than the maximum unambiguous speed determined by the periodic reference signal At this time, the range of unambiguous speed that can be measured can be expressed as The sending period T satisfies:

[0105]

[0106] When the actual desired speed measurement range remains unchanged, as the frequency increases, the required reference signal transmission period decreases. This means that the number of reference signal transmissions increases within the same duration, resulting in increased reference signal overhead. For example, at a carrier frequency of 5 GHz, to achieve a speed measurement of 10 meters per second (m / s), the transmission period is 3 milliseconds (ms), and the reference signal is transmitted five times within 15 ms. At a carrier frequency of 60 GHz, to achieve a speed measurement of 10 m / s, the transmission period is 0.25 ms, and the reference signal is transmitted 60 times within 15 ms.

[0107] In view of this, the embodiments of the present application propose to measure speeds based on reference signals on different frequency domain resources. Since different frequency domain resources correspond to different frequencies, the maximum unambiguous speeds corresponding to the reference signals on different frequency domain resources are also different. When speed measurement ambiguity occurs, different ambiguous speeds can be measured based on the reference signals on different frequency domain resources. The integer ambiguity can be resolved based on the multiple ambiguous speeds measured by the reference signals on multiple frequency domain resources, thereby obtaining the target's true speed. Therefore, the embodiments of the present application allow the reference signal period to be increased, thereby reducing the reference signal overhead. In addition, the multiple ambiguous speeds measured based on the reference signals on multiple frequency domain resources are located within a limited window, and the reporting overhead of the measurement results can be reduced by differentially reporting between multiple frequencies.

[0108] Understandably, a sensing device typically only measures the radial velocity of a target relative to the device. The velocity referred to in this article can be understood as the radial velocity of the target relative to the sensing device. A target may move away from or toward the device, so velocity or Doppler frequency can be directional (i.e., it can have positive or negative values). The following example uses a positive velocity or Doppler frequency value as an example.

[0109] It is understood that the above representations of the received signal, channel, Doppler frequency, maximum unambiguous velocity, and unambiguous velocity are only exemplary. In specific applications, there may be other representations. For example, the Doppler frequency can also be expressed as The maximum unambiguous velocity can also be expressed as The range of unambiguous speed can also be expressed as The specific expression is not limited here. The following is the expression of Doppler frequency as The maximum unambiguous velocity is expressed as The unambiguous speed range is expressed as Take this as an example to illustrate.

[0110] It should be understood that in the embodiment of the present application, the maximum speed to be measured is It refers to the maximum possible real speed of the target. The expected speed range can be determined by the maximum speed expected to be measured, for example

[0111] In an embodiment of the present application, a time unit is, for example, a frame, and a sub-time unit is, for example, a sub-frame, a slot, a mini-slot, an OFDM symbol group, or an OFDM symbol; or, a time unit is, for example, a sub-frame, and a sub-time unit is, for example, a slot, a mini-slot, an OFDM symbol group, or an OFDM symbol; or, a time unit is, for example, a slot, and a sub-time unit is, for example, a mini-slot, an OFDM symbol group, or an OFDM symbol; or, a time unit is, for example, a mini-slot, and a sub-time unit is, for example, an OFDM symbol group or an OFDM symbol; or, a time unit is, for example, an OFDM symbol group, and a sub-time unit is, for example, an OFDM symbol; or, a time unit is an OFDM symbol. In an embodiment of the present application, a frequency unit is, for example, a sub-carrier, or may be other units in the frequency domain.

[0112] In the embodiments of the present application, "including..." can also be understood as "used to indicate..." For example, if the first information includes a first measurement value, it can be understood that the first information is used to indicate the first measurement value. The first information can directly indicate the first measurement value or indirectly indicate the first measurement value through other values.

[0113] In the embodiments of the present application, the "value range" of a variable can be understood as the minimum possible value to the maximum possible value of the variable, or as the maximum possible value of the variable minus the minimum possible value of the variable. For example, if the minimum possible value of the variable x is a and the maximum possible value is b, then the value range of x can be understood as a to b, or as ba. When the minimum possible value of the variable x is 0, the maximum possible value of the variable can also be understood as the value range of the variable.

[0114] See also Figure 3 In an embodiment of the present application, an information transmission method includes:

[0115] Optionally, 301: The second device configures a first reference signal resource for the first device;

[0116] Exemplarily, the second device may send first configuration information to the first device, where the first configuration information is used to configure a first reference signal resource, and the first reference signal resource may be used to send and / or receive a first reference signal. The first reference signal resource includes a time domain resource and a frequency domain resource. The first reference signal resource may be a periodic resource in the time domain. Within each period, the first reference signal resource may occupy one or more sub-time units. The period of the first reference signal resource may be understood as the time interval between the starting sub-time unit in the previous period and the starting sub-time unit in the next period of two adjacent periods. Optionally, the first reference signal resource may occupy one or more periodic time domain resources with the same period in the time domain, and each period of each periodic time domain resource may include one or more sub-time units. The first reference signal resource may occupy multiple frequency domain units in the frequency domain, and the multiple frequency domain units may be distributed continuously or in a comb-like manner. It can also be understood that the first reference signal resource can occupy one or more frequency domain resources in the frequency domain, and each frequency domain resource can include one or more frequency domain units. When each frequency domain resource includes multiple frequency domain units, the multiple frequency domain units can be continuously distributed or distributed in a comb-tooth manner. Generally speaking, the reference signal resource and the reference signal have an associated relationship, so the configuration information of the reference signal resource can also be understood as the configuration information of the reference signal, and the time domain resource of the reference signal resource can also be understood as the time domain resource where the reference signal is located, the time domain resource occupied by the reference signal, or the time domain resource of the reference signal. The frequency domain resource of the reference signal resource can also be understood as the frequency domain resource where the reference signal is located, the frequency domain resource occupied by the reference signal, or the frequency domain resource of the reference signal. The period of the reference signal resource can also be understood as the period of the reference signal. The frequency corresponding to the frequency domain resource of the reference signal can also be understood as the frequency corresponding to the reference signal.

[0117] Specifically, the frequency domain resources occupied by the first reference signal include a first frequency domain resource and a second frequency domain resource, the first frequency domain resource corresponds to a first frequency f1, and the second frequency domain resource corresponds to a second frequency f2. In a possible implementation, the first reference signal can be a reference signal with a large bandwidth, such as Figure 4 As shown, the first frequency domain resource and the second frequency domain resource are part of the frequency domain resource occupied by the first reference signal, and the period of the first reference signal is T.

[0118] In a possible implementation, the first reference signal may also be multiple reference signals, such as Figure 5 and Figure 6 As shown. The first reference signal includes a second reference signal and a third reference signal. The second reference signal is located in the first frequency domain resource, and the third reference signal is located in the second frequency domain resource. The period of the second reference signal and the third reference signal is the same, which is period T. It should be understood that the second reference signal and the third reference signal are both used to measure the speed of the target. The second reference signal and the third reference signal cannot be too far apart in time. Therefore, the time domain resource where the second reference signal is sent can be the same as the time domain resource where the third reference signal is sent, such as Figure 6 As shown; or, the time domain resource where the second reference signal is located is different from the time domain resource where the third reference signal is located, but the time interval t between the two time domain resources is less than the third threshold, as shown Figure 6 As shown. It should be noted that the time interval between the two time domain resources can be the time interval of the starting sub-time unit in the same period, which is not limited here. In order to reduce the reference signal overhead, in the embodiment of the present application, the period T is greater than the first threshold, and the first threshold is related to the maximum speed expected to be measured, that is, speed measurement ambiguity may occur. Exemplarily, the period T satisfies:

[0119]

[0120] Here, min(f1,f2) represents the smaller value of f1 and f2.

[0121] In the embodiment of the present application, since the period of the first reference signal is greater than the first threshold, the number of times the first reference signal is sent within the same duration is reduced, thereby reducing the reference signal overhead.

[0122] In one possible implementation, the first reference signal may include more reference signals occupying different frequency domain resources, or the first reference signal may occupy more frequency domain resources, which is not specifically limited herein. f1 may be smaller than f2, or f1 may be greater than f2, which is not specifically limited herein.

[0123] In an embodiment of the present application, any one of the multiple frequency domain resources occupied by the first frequency domain resource or the second frequency domain resource or the first reference signal is, for example, a subcarrier, a resource element (RE), a resource block (RB), a resource block set (RB set), an interlace unit (interlace), an interlace group, a subchannel (subchannel), a bandwidth part (bandwidth part, BWP), a carrier (carrier) or a band (band), etc. The frequency corresponding to the frequency domain resource can be the frequency of the lowest or highest frequency subcarrier included in the frequency domain resource, or the frequency of the center subcarrier included in the frequency domain resource, or the frequency of any subcarrier included in the frequency domain resource, and the specific details are not limited here.

[0124] Optionally, the first reference signal resource may also be pre-configured in the first device, or pre-defined by a protocol, in which case 201 may not be performed.

[0125] It should be understood that the maximum unambiguous speed corresponding to the reference signal is related to the period and frequency domain of the reference signal. Although the reference signal located in the first frequency domain resource and the reference signal located in the second frequency domain resource have the same period, since the first frequency f1 and the second frequency f2 are different frequencies, the maximum unambiguous speeds corresponding to the reference signal located in the first frequency domain resource and the reference signal located in the second frequency domain resource are different. Hereinafter, these two maximum unambiguous speeds will be referred to as the maximum unambiguous speed corresponding to f1 and the maximum unambiguous speed corresponding to f2. The following takes f1<f2 as an example to illustrate that when speed measurement ambiguity occurs, the target's true speed V truth It can be expressed as:

[0126]

[0127] or,

[0128]

[0129] Among them, v1 and v2 are V truth The maximum unambiguous speed corresponding to f1 is The maximum unambiguous speed corresponding to f2 The modulo results, v1 and v2, can be understood as the fuzzy speed corresponding to f1 and f2, respectively, which can be measured based on the reference signal located in the first frequency domain resource and the reference signal located in the second frequency domain resource. k1 is the integer ambiguity corresponding to f1, and k2 is the integer ambiguity corresponding to f2. Based on the above two formulas, we can further obtain:

[0130]

[0131]

[0132] To obtain the target's true velocity, we need to further solve the integer ambiguity k1 or k2. In order for the above equation to have a unique solution, k1 and k2 must satisfy certain constraints. Through analysis, it is found that in most cases, k1 and k2 satisfy k2 = k1 or k2 = k1 + 1. Specifically, since the maximum unambiguous velocity corresponding to different frequencies is different, the change of the integer ambiguity with the true velocity at different frequencies is also different, such as Figure 7 shown. Figure 7 The figure shows the variation of the integer ambiguity corresponding to f1 and f2 with the true velocity. It can be seen from the figure that k1 and k2 satisfy k2=k1 in most cases, such as Figure 7 As shown in the middle gray part; or k2=k1+1, as Figure 7 Shown in the shaded area.

[0133] As the true speed increases, Figure 7 The larger the shaded area, the greater the arrive When k2=k1+2, k2=k1+2 may appear, where satisfy:

[0134]

[0135] At this time, the actual speed can be considered to have exceeded the maximum actual speed expected to be measured. For example, when the period T = 2.5ms, f1 = 60GHz, and f2 = 60.5GHz, the reference signal on f1 can be used to achieve an unambiguous speed measurement of 0 to 1m / s, and the reference signal on f2 can be used to achieve an unambiguous speed measurement of 0 to 0.9917m / s. The minimum is 121, which means the true speed is greater than 121 m / s, which exceeds the target's true speed. Therefore, it can be considered that there are only two relationships between k1 and k2: k2 = k1 or k2 = k1 + 1.

[0136] like Figure 7 As shown, when v2 - v1 ≥ 0, k2 = k1. That is, when the true velocity corresponds to the same integer ambiguity at the two frequencies, the maximum unambiguous velocity corresponding to the lower frequency f1 is greater than the maximum unambiguous velocity corresponding to the higher frequency f1. Therefore, the ambiguous velocity v1 corresponding to f1 will be less than or equal to the ambiguous velocity v2 corresponding to f2. When v2 - v1 < 0, k2 = k1 + 1. Therefore, the relationship between k1 and k2 can be determined based on whether v2 - v1 is positive or negative.

[0137] In a possible implementation, in order to constrain k1 and k2 to have only two relationships, k2=k1 or k2=k1+1, the second device may configure the resources of the first reference signal based on the maximum speed actually expected to be measured. And period T design f1 and f2. Specifically, It should be greater than the maximum integer ambiguity actually expected to be measured, where f1 is usually much greater than f2-f1. Therefore, it can be achieved by constraining f2-f1 to be less than the first threshold. Under some carrier frequencies and transmission cycles, the maximum value of f2-f1 is shown in Table 1 below:

[0138] Table 1:

[0139]

[0140] As shown in Table 1, the maximum value of f2-f1 is larger when the transmission period is short or the maximum speed to be measured is not large. For example, when the maximum speed range to be measured is 10 km / h and the transmission period is 5 ms, the maximum value of f2-f1 exceeds 10 GHz. In one possible implementation, the values of f1 and f2 do not differ so significantly, and therefore are not limited in Table 1.

[0141] It should be understood that f2 - f1 should be greater than the second threshold so that the peak position of the same target on the Doppler spectrum of f1 does not overlap with the peak position of the Doppler spectrum of f2. Otherwise, it will be difficult to accurately determine the integer ambiguity. In one possible implementation, the second threshold is negatively correlated with the total speed measurement duration. The longer the total duration, the higher the speed measurement resolution, the easier it is to distinguish the peak positions of the same target on Doppler spectra at different frequencies, and the smaller the second threshold can be set. For example, when the total speed measurement duration is 160ms, f2 - f1 is greater than 100MHz.

[0142] It should be noted that Table 1 is illustrated using f1 < f2 as an example. When f1 > f2, Table 1 can be viewed as the maximum value of f1 - f2. In this case, f1 - f2 is less than the first threshold and / or f1 - f2 is greater than the second threshold.

[0143] Optionally, 302, the second device sends second information to the first device;

[0144] The second device may send second information to the first device, where the second information includes one or more of the following: the maximum speed expected to be measured, the maximum integer ambiguity expected to be measured, and the range of differential reporting. Optionally, the second information may also include the number of targets or multipaths expected to be reported, or a peak threshold for reporting. For example, when the energy or amplitude corresponding to a target or a path on the Doppler spectrum is greater than the threshold, the measurement quantity regarding the target or path is reported. This is not specifically limited here. It should be understood that the actual function of the maximum speed expected to be measured or the maximum integer ambiguity expected to be measured is not limited by the specific name, and can also be the expected speed measurement range. This is not specifically limited here.

[0145] In a possible implementation, the second information is also used to instruct the first device to perform differential reporting, and / or to indicate the measurement quantity that the first device needs to report, such as Doppler frequency, speed, amplitude or phase corresponding to the Doppler frequency on the Doppler spectrum, etc.

[0146] The second information is included in the first configuration information, for example, or the second information may not be included in the first configuration information but is sent separately.

[0147] Optionally, the content included in the second information may be predefined by the protocol or preconfigured in the first device, and then step 202 may not be performed.

[0148] 303. The second device sends a first reference signal;

[0149] The second device sends a first reference signal to a target, which may be a passive target, an active terminal device, or the first device. Figure 3 In the example, the second device sends a reference signal to the first device. The first reference signal can be a perception reference signal, a positioning reference signal (PRS), or other reference signals in the communication system, which are not limited here. It should be understood that the first reference signal is used to measure the target speed, and the target speed can be the speed of the passive target relative to the first device and the second device, or it can refer to the speed of the first device relative to the second device. There can be one or more passive targets, and the target speed can also be one or more.

[0150] Accordingly, the first device receives the first reference signal. It should be understood that the signal received by the first device can be the first reference signal or a signal of the first reference signal reflected by a passive target. For convenience of description below, the signal of the first reference signal reflected by the passive target is still referred to as the first reference signal.

[0151] For relevant information about the first reference signal, please refer to the description in step 301 and will not be repeated here.

[0152] 304. The first device sends first information to the second device.

[0153] The first device obtains first information based on the first reference signal, and the first information includes a first measurement value and a first difference value. The first measurement value is the speed or Doppler frequency corresponding to the first reference signal located in the first frequency domain resource, the first difference value is the difference between the second measurement value and the first measurement value, and the second measurement value is the speed or Doppler frequency corresponding to the first reference signal located in the second frequency domain resource.

[0154] It should be understood that the first device may obtain one or more first measurement values and one or more second measurement values. Optionally, at least one first measurement value and one second measurement value are different, that is, speed measurement ambiguity occurs.

[0155] In the following, for the convenience of description, the first reference signal located in the first frequency domain resource is called the second reference signal, the first reference signal located in the second frequency domain resource is called the third reference signal, the frequency corresponding to the first frequency domain resource is f1, and the frequency corresponding to the second frequency domain resource is f2.

[0156] In one possible implementation, the first device obtains the Doppler spectrum or velocity spectrum corresponding to f1 based on the second reference signal, obtains the first measurement value based on the Doppler spectrum or velocity spectrum corresponding to f1, obtains the Doppler spectrum or velocity spectrum corresponding to f2 based on the third reference signal, and obtains the second measurement value based on the Doppler spectrum or velocity spectrum corresponding to f2. For example, first, channel information is obtained based on reference signals at different periods, and then the channel information obtained at different periods is Fourier transformed to obtain the Doppler spectrum. A grid point on the Doppler spectrum corresponds to a Doppler frequency, and the value range of the index g of the grid point on the Doppler spectrum can be expressed as {0,1,2,……,M s -1}, where M s Indicates the number of Fourier transform points, M s The value of is, for example, the number of cycles M or an integer multiple of the number of cycles. For example, the Doppler frequency corresponding to the grid point g=0 is 0, and the Doppler frequency corresponding to the grid point g=1 is Δf d , the Doppler frequency corresponding to the grid point g = 2 is 2Δf d , and so on, where Δf d represents the Doppler resolution or granularity of the Doppler spectrum, Δf d The value of is, for example, the reciprocal of the total duration corresponding to all periodic reference signals, ie, 1 / MT, or 1 / M sT. The velocity spectrum can be understood as the spectrum obtained by converting the horizontal axis of the Doppler spectrum into velocity. The value range of the grid point index g can be considered unchanged, except that each grid point on the velocity spectrum corresponds to a velocity. For example, the velocity corresponding to the grid point g = 0 is 0, the velocity corresponding to the grid point g = 1 is Δv, the velocity corresponding to the grid point g = 2 is 2Δv, and so on, where Δv represents the velocity resolution or granularity of the velocity spectrum, and Δv is related to Δf d The relationship can be expressed as Δv=Δf d c / 2f, where c represents the speed of light, and f represents the frequency corresponding to the reference signal. It should be understood that each peak in the Doppler spectrum or velocity spectrum can be considered to correspond to a target or a path (the path is the path where the target is located), and the speed or Doppler frequency corresponding to the reference signal can be understood as the Doppler frequency or speed corresponding to the grid point where the peak value is located on the Doppler spectrum or velocity spectrum obtained based on the reference signal. Therefore, the first measurement value can be understood as the Doppler frequency or speed corresponding to the grid point where the peak value is located on the Doppler spectrum or velocity spectrum corresponding to f1, and the second measurement value can be understood as the Doppler frequency or speed corresponding to the grid point where the peak value is located on the Doppler spectrum or velocity spectrum corresponding to f2. Taking two targets as an example, Figure 8 is the velocity spectrum corresponding to f1 obtained by the first device based on the second reference signal, Figure 9 This is the velocity spectrum corresponding to f2 obtained by the first device based on the third reference signal. It can be seen that there are two peaks on each velocity spectrum, corresponding to the two targets respectively. Figure 10 Will Figure 8 The velocity spectrum corresponding to f1 and Figure 9 The velocity spectrum corresponding to f2 is placed in a figure for easy comparison.

[0157] It should be noted that in the embodiments of this application, a measurement value can also be understood as a measurement quantity, or the value of a measurement quantity. For example, if the first measurement quantity is the speed or Doppler frequency corresponding to the second reference signal, the first measurement value is a specific speed or Doppler frequency value. Similarly, the second measurement value can also be understood as the second measurement quantity, or the value of the second measurement quantity. It should be understood that the substantive functions of the first measurement value or the second measurement value are not limited by the specific names, and this application does not limit the specific names.

[0158] The first device can report the first measurement value and the second measurement value in a differential manner. As described above, the Doppler frequency or velocity corresponding to the peak on the Doppler spectrum or velocity spectrum corresponding to f1 is the first measurement value, and the Doppler frequency or velocity corresponding to the peak on the Doppler spectrum or velocity spectrum corresponding to f2 is the second measurement value. The difference between the second measurement value and the first measurement value is the first difference. Then, the first information includes the first measurement value and the first difference. It should be noted that the first difference is the cyclic shift difference between the second measurement value and the first measurement value. Taking the measured quantity as velocity as an example, it should be understood that due to the large period of the reference signal, the measured velocity is an ambiguous velocity. Still taking f1 < f2 as an example below, v1 is an ambiguous velocity obtained on the velocity spectrum corresponding to f1, and v2 is an ambiguous velocity obtained on the velocity spectrum corresponding to f2. v1 and v2 correspond to the same target. As described above, when v2 - v1 ≥ 0, the integer ambiguity k1 corresponding to f1 and the integer ambiguity k2 corresponding to f2 satisfy k1 = k2, as shown in Figure 10 Target 1 in. As the integer ambiguity increases, the value of v2 - v1 becomes larger, and v2 - v1 satisfies:

[0159]

[0160] where k max is the maximum velocity to be measured corresponding integer ambiguity at frequencies f1 or f2, that is, the maximum integer ambiguity to be measured. At this time, it is relatively easy to make the value range of v2 - v1 less than the value range of v2. Exemplarily, the value range of v2 can be understood as The value range of v2 - v1 can be understood as Generally, it is possible to achieve while reducing the overhead of the reference signal Exemplarily, when the carrier frequency is around 60 GHz, if the maximum velocity to be measured is According to the traditional scheme, it is necessary to send a reference signal with a period of 0.3 ms to achieve unambiguous velocity measurement. According to the method proposed in this application, reference signals with a period of 5 ms can be sent at two frequencies f1 = 60 GHz and f = 60.5 GHz respectively, corresponding to The overhead of the reference signal can be reduced by about 88%. At this time, k max = 16, Compared with the value range the value range is reduced by about 86.7%. When v2 - v1 < 0, it corresponds to k2 = k1 + 1, and v2 - v1 satisfies:

[0161]

[0162] At this time, as Figure 10As shown in the target 2 in the figure, the peak value of target 2 on f1 is close to the rightmost side of the velocity spectrum, and the peak value of target 2 on f2 is close to the leftmost side of the velocity spectrum. The value range of v2-v1 is relatively large. For example, the value range of v2-v1 can be understood as Since v2-v1≥0 or v2-v1<0 may occur, reporting v2-v1 does not reduce the reporting overhead compared to directly reporting v2. Therefore, v2-v1 needs to be cyclically shifted. Specifically, when v2-v1<0, it can be seen that:

[0163]

[0164] at this time, The value range of is the same as that of v2-v1 when v2-v1≥0, which is At this time, you can report Rather than v2-v1.

[0165] In summary, the first difference can be expressed as:

[0166] mod(x2-x1,X)

[0167] Where mod represents a modulo operation, x1 represents the first measured value, x2 represents the second measured value, and X represents the maximum value of the second measured value, or represents the range of values for the second measured value. It should be understood that when x2 - x1 ≥ 0, the first difference is x2 - x1; when x2 - x1 < 0, the first difference is x2 + X - x1. The first or second measured value can be velocity or Doppler frequency.

[0168] In this embodiment, by ensuring that the difference between the frequency corresponding to the second frequency domain resource and the frequency corresponding to the first frequency resource is less than the second threshold, the value range of the first difference can be made smaller, which is conducive to reducing the reporting overhead of the measurement results.

[0169] It should be understood that the Doppler frequency or velocity can be indicated by the index of the grid point on the Doppler spectrum or velocity spectrum, and the index can also be understood as the index on the Doppler domain, or the index of the Doppler domain basis vector. Therefore, the first device can indicate the reported Doppler frequency or velocity by reporting the index on the Doppler domain. Similarly, the first difference can be indicated by the difference of the index on the Doppler domain. Exemplarily, the first difference can be indicated in the following form:

[0170] mod(g2-g1,G)

[0171] Where g1 is the index corresponding to the peak value on the Doppler spectrum corresponding to f1 (corresponding to the first measurement value), g2 is the index corresponding to the peak value on the Doppler spectrum corresponding to f2 (corresponding to the second measurement value), and G represents the maximum value of the index, corresponding to the maximum unambiguous Doppler or maximum unambiguous velocity, which is not limited here. For example, the value range of g1 and g2 is {0, 1, 2, ..., M s -1}, G=M s , M s is the number of Fourier transform points.

[0172] When there are multiple speed measurement targets, multiple peaks will be detected on each Doppler spectrum or velocity spectrum, that is, the first device can obtain multiple first measurement values and multiple second measurement values, and correspondingly, multiple first difference values can also be obtained. It should be understood that the first measurement value and the second measurement value used to obtain each first difference value should be related. Because the Doppler frequencies or velocities corresponding to the same target on the Doppler spectrum or velocity spectrum corresponding to different frequencies are correlated, the first difference values of the Doppler frequencies or velocities corresponding to the same target at different frequencies will be concentrated in a limited range. The difference values of the Doppler frequencies or velocities measured for different targets at different frequencies will be relatively large, such as Figure 10 As shown in the figure, if the fuzzy velocity corresponding to target 1 on f1 is differentiated from the fuzzy velocity corresponding to target 2 on f2, since the fuzzy velocity corresponding to target 1 on f1 is greater than the fuzzy velocity corresponding to target 2 on f2, the first difference is the fuzzy velocity corresponding to target 2 on f2 plus the maximum unfuzzy velocity corresponding to f2, minus the fuzzy velocity corresponding to target 1 on f1, which is the larger value.

[0173] Therefore, before obtaining the plurality of first difference values, the first device needs to associate the plurality of first measurement values with the plurality of second measurement values one by one. Specifically, the first difference between each pair of associated measurement values is less than or equal to the first window length, and the first window length is related to the maximum speed or the maximum integer ambiguity expected to be measured. For example, when the measurement value is an ambiguous speed, the first window length is like Figure 11 As shown, the position corresponding to target 1 on the second Doppler spectrum and the position corresponding to target 1 on the first Doppler spectrum are located within the window corresponding to the first window length, that is, the difference between the second measurement value corresponding to target 1 on the second Doppler spectrum and the first measurement value corresponding to target 1 on the first Doppler spectrum is less than or equal to the first window length. The cyclic shift difference between the second measurement value corresponding to target 2 on the second Doppler spectrum and the first measurement value corresponding to target 2 on the first Doppler spectrum can also be less than or equal to the first window length, which is equivalent to cyclically expanding target 2 on the second Doppler spectrum backward to Figure 12The position of target 2 (the dashed line) is directly differentiated from the position of target 2 on the first Doppler spectrum. Therefore, the first measurement value corresponding to target 1 on the first Doppler spectrum is associated with the second measurement value corresponding to target 1 on the second Doppler spectrum, and the first measurement value corresponding to target 2 on the first Doppler spectrum is associated with the second measurement value corresponding to target 2 on the second Doppler spectrum.

[0174] It should be understood that the first window length can be determined by the first device based on the second information. For example, the first device determines the first window length based on the maximum velocity or maximum integer ambiguity to be measured. Alternatively, the first window length can be understood as the range of values for the first difference. The range of values for the first difference can also be understood as the maximum possible value of the first difference minus the minimum possible value of the first difference. Therefore, the first device can associate multiple first measurement values with multiple second measurement values based on the second information.

[0175] It should be noted that in the above method, f1 can be smaller than f2, or f1 can be larger than f2, that is, the measurement quantity at low frequency can be used as a reference, or the measurement quantity at high frequency can be used as a reference. The above content is mainly explained by taking f1 as an example. When f1 is larger than f2, the integer ambiguity of the same target at two frequencies satisfies k2=k1 or k2=k1-1. Figure 13 As shown in , f1 is greater than f2, and the maximum unambiguous speed corresponding to f1 is less than the maximum unambiguous speed corresponding to f2. Therefore, when k2 = k1, the fuzzy speed corresponding to f1 will be greater than or equal to the fuzzy speed corresponding to f2, as shown in Figure 13 As shown in the figure, the peak corresponding to target 1 on the first Doppler spectrum is located to the right of the peak corresponding to target 1 on the second Doppler spectrum. When k2 = k1-1, as Figure 13 As shown in the target 2, the peak corresponding to the target 2 on the first Doppler spectrum is close to the leftmost side of the entire Doppler spectrum, and the peak corresponding to the target 2 on the first Doppler spectrum is close to the rightmost side of the entire Doppler spectrum.

[0176] In a possible implementation, when f1 is greater than f2, the expression of the first difference can be updated as

[0177] mod(x1-x2,X)

[0178] It should be understood that when x1-x2≥0, the first difference is x1-x2; when x1-x2<0, the first difference is x1-(x2-X)=x1-x2+X max . Wherein, x1 represents the first measurement value, x2 represents the second measurement value, and X represents the maximum value of the second measurement value, or represents the value range of the second measurement value. It can be understood that at this time, the value range of the first difference is still limited to the first window length. Figure 13As shown, the position corresponding to target 1 on the first Doppler spectrum and the position corresponding to target 1 on the second Doppler spectrum are still located within the window corresponding to the first window length, that is, the difference between the first measurement value corresponding to target 1 on the first Doppler spectrum and the second measurement value corresponding to target 1 on the second Doppler spectrum is less than or equal to the first window length. The cyclic shift difference between the first measurement value corresponding to target 2 on the first Doppler spectrum and the second measurement value corresponding to target 2 on the second Doppler spectrum can also be less than or equal to the first window length, which is equivalent to cyclically extending target 2 on the second Doppler spectrum forward to Figure 14 The position of the dotted target 2 in the middle, and then compare the position of the target 2 on the first Doppler with Figure 14 The position of the dotted target 2 is directly differentiated. It is understandable that the expression indicating the first difference by the difference of the index in the Doppler domain can also be updated to mod(g1-g2,G). The explanation of g1, g2, and G can be referred to above and will not be repeated here.

[0179] In one possible embodiment, the first information also includes a third measurement value and a fourth measurement value, or a difference between the third measurement value and a second measurement value, where the second difference is the difference between the fourth measurement value and the third measurement value. The third measurement value is the amplitude or phase corresponding to the first measurement value, and the fourth measurement value is the amplitude or phase corresponding to the second measurement value. Exemplarily, the third measurement value is the amplitude or phase of the peak on the Doppler spectrum or velocity spectrum corresponding to f1, and the fourth measurement value is the amplitude or phase of the peak on the Doppler spectrum or velocity spectrum corresponding to f2. It is understandable that the first device can obtain one or more third measurement values and one or more fourth measurement values, wherein each third measurement value has a corresponding first measurement value, and each fourth measurement value has a corresponding second measurement value. For example, a third measurement value is the amplitude or phase of a peak on the Doppler spectrum or velocity spectrum corresponding to f1, and the first measurement value corresponding to the third measurement value is the Doppler frequency or velocity corresponding to the peak on the Doppler spectrum or velocity spectrum corresponding to f1. A fourth measurement value is the amplitude or phase of a peak on the Doppler spectrum or velocity spectrum corresponding to f2, and the second measurement value corresponding to the fourth measurement value is the Doppler frequency or velocity corresponding to the peak on the Doppler spectrum or velocity spectrum corresponding to f2.

[0180] When the first device obtains multiple third measurement values and multiple fourth measurement values, it can also obtain multiple second difference values accordingly. The third measurement value and the fourth measurement value corresponding to each second difference value can be associated. The fourth measurement value associated with each third measurement value can be the fourth measurement value corresponding to the second measurement value associated with the first measurement value corresponding to the third measurement value. That is, the third measurement value and the fourth measurement value can be associated one-to-one by associating the first measurement value with the second measurement value.

[0181] Optionally, the third measurement value may also be a coefficient of a peak value corresponding to the first measurement value, and the fourth measurement value may also be a coefficient of a peak value corresponding to the second measurement value.

[0182] In a possible implementation, the first information further includes a first frequency f1 corresponding to the first frequency domain resource and a second frequency f2 corresponding to the second frequency domain resource, or the first frequency f1 and a third difference, where the third difference is the difference between the second frequency f2 and the first frequency f1. It should be understood that when the first reference signal is a reference signal with a large bandwidth, such as Figure 3 As shown, the second device may not know the frequencies at which the first and second measurement values reported by the first device were measured. When the second device performs perception settlement based on the measurement results reported by the first device, such as calculating the true speed of the target, it needs to know the frequency information corresponding to each measurement value.

[0183] It can be understood that the first frequency f1 and the second frequency f2 can be indicated in the first information by the position of the first frequency domain resource and the position of the second frequency domain resource, for example, by the index of the starting RB of the first frequency domain resource and the index of the starting RB of the second frequency domain resource, or by the index of the starting RB of the first frequency domain resource and the difference between the index of the starting RB of the second frequency domain resource and the index of the starting RB of the first frequency domain resource.

[0184] It should be noted that the first device can measure the Doppler or speed of the target on more frequency domain resources. In this case, the first information may include measurement results corresponding to multiple frequency domain resources. Optionally, the first signal may also include frequency information corresponding to multiple frequency domain resources. The specific details are not limited here. For example, the first device may select the measurement value corresponding to the frequency domain resource with the lowest frequency or the frequency domain resource with the highest frequency among all frequency domain resources as the reference measurement value, and the measurement values corresponding to other frequency domain resources may be reported after being differentiated from the reference measurement value to reduce the reporting overhead. For the calculation method of the difference, please refer to the previous content and will not be repeated here.

[0185] In a possible implementation, the second device receives the first information from the first device and performs perception settlement based on the first information, such as calculating the real speed of the target. A possible calculation method is given below. The second device can obtain the fuzzy speed v1 corresponding to f1 and the fuzzy speed v2 corresponding to f2 based on the first information. The second device determines the relationship between k1 and k2 based on the size relationship between v1 and v2. Taking f1 as an example, when v1≤v2, k2=k1, otherwise k2=k1+1. After determining the relationship between k1 and k2, the second device can be used according to the relationship between v1 and v2. To calculate the specific values of k1 and k2. Specifically, when k2 = k1, the values of k1 and k2 are:

[0186]

[0187] When k2=k1+1, the values of k1 and k2 are:

[0188]

[0189]

[0190] It should be noted that the fuzzy speed obtained by the second device should have certain errors, such as errors introduced by noise or interference when the second device is measuring, errors introduced by quantization when reporting, etc. When the second device uses the above two formulas to calculate the integer ambiguity, the value on the right side of the equation can be rounded off, for example, rounded off.

[0191] Specifically, Figure 15 and Figure 16 The velocity spectrum of a single target at different frequencies obtained based on the second reference signal and the third reference signal is shown when f1 = 60 GHz, f2 = 61 GHz, and T = 2.5 ms, where: Figure 15 and Figure 16 The target shown in is 1m / s, The horizontal axis of the velocity spectrum represents velocity, and the vertical axis represents normalized power.

[0192] Figure 15 The velocity v1 corresponding to the peak value of f1 is 0.3m / s, and the velocity v2 corresponding to the peak value of f2 is 0.367m / s. v2-v1 is a positive number, so k2=k1. Calculate the values of k1 and k2 and round them to get k1 and k2 are both 4. Substitute The Vtruth is obtained as 4.3m / s.

[0193] Figure 16 The velocity v1 corresponding to the peak value of f1 is 0.98m / s, and the velocity v2 corresponding to the peak value of f2 is 0.047m / s. v2-v1 is a negative number, so k2=k1+1. Calculate the values of k1 and k2 and round them to get k1 as 3 and k2 as 4. Substitute them into The Vtruth is obtained as 3.98m / s.

[0194] It should be understood that the second device can also calculate the true speed of the target with the help of other auxiliary information to improve the estimation accuracy of the target speed. This application does not limit the specific application of the first information.

[0195] In a possible implementation, the first device may report the first information to the third device. Figure 17 In an embodiment of the present application, an information transmission method includes:

[0196] Optionally, 1701: The third device configures resources of a first reference signal for the first device;

[0197] Optionally, 1702, the third device sends second information to the first device;

[0198] The specific implementation of steps 1701 to 1702 in this embodiment can be referred to Figure 3 As shown in steps 301 to 302, the method implemented by the second device in steps 301 to 302 is implemented by the third device in steps 1701 to 1702, and the details are not repeated here.

[0199] 1703. The second device sends a first reference signal to the first device.

[0200] 1704. The first device sends the first information to the third device.

[0201] Steps 1703 to 1704 in this embodiment are similar to those in the aforementioned Figure 3 Steps 303 to 304 are similar and will not be described in detail here.

[0202] In a possible implementation, the first device can send and receive the first information by itself and report the first information to the third device. Figure 18 In an embodiment of the present application, an information transmission method includes:

[0203] Optionally, 1801: The third device configures resources of a first reference signal for the first device;

[0204] Optionally, 1802, the third device sends second information to the first device;

[0205] Steps 1801 to 1802 in this embodiment are similar to those in the aforementioned Figure 17 Steps 1701 to 1702 are similar and will not be described in detail here.

[0206] 1803. The first device sends a first reference signal.

[0207] The specific implementation of step 1803 in this embodiment can be referred to Figure 3 As shown in step 303, the method implemented by the second device in step 303 is implemented by the first device in step 1803, and the details are not repeated here.

[0208] 1804. The first device receives a reflected signal of the first reference signal;

[0209] The first device receives the reflected signal of the first reference signal and obtains the first information according to the reflected signal. The implementation method of the first device obtaining the first information is similar to the implementation method of the first device obtaining the first information in the above embodiment, and the details are not repeated here.

[0210] 1805. The first device sends the first information to the third device.

[0211] Step 1805 in this embodiment is the same as the aforementioned Figure 17 The step 1704 shown is similar and will not be described in detail here.

[0212] In a possible implementation, the second device sends a first reference signal to the first device, and the first device may not report the first information, or may directly perform calculations based on the first information. Figure 19 In an embodiment of the present application, an information transmission method includes:

[0213] Optionally, 1901: The second device configures resources of a first reference signal for the first device;

[0214] Optionally, 1902, the second device sends second information to the first device;

[0215] 1903. The second device sends a first reference signal.

[0216] Steps 1901 to 1903 in this embodiment are similar to those in the aforementioned Figure 3 Steps 301 to 303 are similar and will not be described in detail here.

[0217] Optionally, 1904, the first device performs calculation based on the first information.

[0218] The first device may not report the first information to the first device or the third device, and the first device may perform the relevant calculation based on the first information. It should be understood that the implementation method of the first device performing the relevant calculation based on the first information is similar to the implementation method of the second device or the third device performing the relevant calculation in the above embodiment, and is not specifically limited here.

[0219] It should be understood that the formulas in the above embodiments are merely examples, and the present application is not limited thereto. Any modified formulas of the formulas involved in the above embodiments fall within the protection scope of the embodiments of the present application.

[0220] The above describes the information transmission method in the embodiment of the present application. The following describes the communication device in the embodiment of the present application. Figure 20In the embodiments of the present application, the communication device may be a terminal device, or a component or device applied to the terminal device (such as a processor, chip, or chip system, etc.), or a logic module or software that can realize all or part of the functions of the terminal device. Alternatively, the communication device may be a network device, or a component applied to the network device (such as a processor, chip, or chip system, etc.), or a logic module or software that can realize all or part of the functions of the network device. An embodiment of the communication device includes:

[0221] The receiving unit 2001 is configured to receive a first reference signal, where the frequency domain resources where the first reference signal is located include first frequency domain resources and second frequency domain resources;

[0222] Sending unit 2002 is used to send first information, the first information includes a first measurement value and a first difference, the first measurement value is the speed or Doppler frequency corresponding to the first reference signal located in the first frequency domain resource, the first difference is the difference between the second measurement value and the first measurement value, and the second measurement value is the speed or Doppler frequency corresponding to the first reference signal located in the second frequency domain resource.

[0223] See also Figure 21 In the embodiments of the present application, the communication device may be a terminal device, or a component or device applied to the terminal device (such as a processor, chip, or chip system, etc.), or a logic module or software that can realize all or part of the functions of the terminal device. Alternatively, the communication device may be a network device, or a component applied to the network device (such as a processor, chip, or chip system, etc.), or a logic module or software that can realize all or part of the functions of the network device. An embodiment of the communication device includes:

[0224] The sending unit 2101 is configured to send a first reference signal, where the frequency domain resources where the first reference signal is located include first frequency domain resources and second frequency domain resources;

[0225] Receiving unit 2102 is used to receive first information, the first information including a first measurement value and a first difference, the first measurement value is the speed or Doppler frequency corresponding to the first reference signal located in the first frequency domain resource, the first difference is the difference between the second measurement value and the first measurement value, and the second measurement value is the speed or Doppler frequency corresponding to the first reference signal located in the second frequency domain resource.

[0226] Next, we introduce a communication device provided by an embodiment of the present application. Figure 22 , Figure 22This is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. The communication device can be a terminal device or network device in the above method embodiment, or can be a chip, chip system, or processor that supports the terminal device or network device to implement the above method. The communication device can be used to implement the method described in the above method embodiment. For details, please refer to the description of the above method embodiment.

[0227] The communication device may include one or more processors 2201, which are connected to a memory 2202, an input / output unit 2203, and a bus 2204. The processor 2201 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit (CPU). The baseband processor may be used to process communication protocols and communication data, while the CPU may be used to control the communication device (e.g., a base station, a baseband chip, a terminal, a terminal chip, a DU or a CU), execute software programs, and process data in the software programs.

[0228] Optionally, the communication device may include one or more memories 2202, on which instructions may be stored. The instructions may be executed on the processor 2201, causing the communication device to perform the method described in the above method embodiment. Optionally, the memory 2202 may also store data. The processor 2201 and memory 2202 may be provided separately or integrated together.

[0229] Optionally, the communication device may further include a transceiver and an antenna. The transceiver may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., and is configured to implement transceiver functions. The transceiver may include a receiver and a transmitter. The receiver may be referred to as a receiver or a receiving circuit, etc., and is configured to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., and is configured to implement a transmitting function.

[0230] In another possible design, processor 2201 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions may be separate or integrated. The transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or the transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.

[0231] In another possible design, the processor 2201 may optionally store instructions, which, when executed on the processor 2201, may cause the communication device to perform the method described in the above method embodiment. The instructions may be fixed in the processor 2201, in which case the processor 2201 may be implemented by hardware.

[0232] In another possible design, the communication device may include a circuit, and the circuit may implement the function of transmitting or receiving or communicating the communication device or the first terminal device in the aforementioned method embodiment. The processor and transceiver described in the present application embodiment may be implemented in an integrated circuit (iMtegrated circuit, IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (application specific iMtegrated circuit, ASIC), a printed circuit board (printed circuit board, PCB), an electronic device, etc. The processor and transceiver may also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), M-type metal oxide semiconductor (MKEMT), p-type metal oxide semiconductor (positive chaMMel CMOS), bipolar junction transistor (BJT), bipolar CKOS (BiCKOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0233] The communication device described in the above embodiments may be a terminal device or a network device, but the scope of the communication device described in the embodiments of the present application is not limited thereto, and the structure of the communication device may not be limited thereto. Figure 22 The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0234] (1) An independent integrated circuit (IC), or chip, or chip system or subsystem;

[0235] (2) A set of one or more ICs, optionally including a storage component for storing data and instructions;

[0236] (3) ASIC, such as modem (KSK);

[0237] (4) Modules that can be embedded in other devices;

[0238] (5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

[0239] (6)Others, etc.

[0240] For the case where the communication device may be a chip or a chip system, see Figure 23 Schematic diagram of the chip structure shown. Figure 23 The chip 2300 shown includes a processor 2301 and an interface 2302. Optionally, it may also include a memory 2303. The number of processors 2301 may be one or more, and the number of interfaces 2302 may be multiple.

[0241] For the case where the chip is used to implement the functions of the network device or terminal device in the embodiments of the present application:

[0242] The interface 2302 is used to receive or output signals;

[0243] The processor 2301 is used to perform data processing operations of the network device or terminal device.

[0244] It is understandable that some optional features in the embodiments of the present application may, in certain scenarios, be implemented independently of other features, such as the solution on which they are currently based, to solve corresponding technical problems and achieve corresponding effects. They may also be combined with other features in certain scenarios as needed. Accordingly, the communication device provided in the embodiments of the present application may also implement these features or functions accordingly, which will not be described in detail here.

[0245] It should be understood that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component.

[0246] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROK), a programmable read-only memory (PROK), an erasable programmable read-only memory (EPROK), an electrically erasable programmable read-only memory (EEPROK), or a flash memory. The volatile memory may be a random access memory (RAK), which is used as an external cache. By way of example and not limitation, many forms of RAK are available, such as static random access memory (SRAK), dynamic random access memory (DRAK), synchronous dynamic random access memory (SDRAK), double data rate synchronous dynamic random access memory (DDR SDRAK), enhanced synchronous dynamic random access memory (ESDRAK), synchronous link dynamic random access memory (SLDRAK), and direct memory bus random access memory (DR RAK). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0247] An embodiment of the present application also provides a computer-readable storage medium, comprising instructions, which, when executed on a computer, enable the computer to execute the method in the aforementioned embodiment.

[0248] An embodiment of the present application also provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the method in the aforementioned embodiment.

[0249] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0250] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0251] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0252] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0253] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, read-only memory), random access memory (RAM, random access memory), disk or optical disk, and other media that can store program code.

[0254] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

Claims

1. An information transmission method, characterized in that: The method comprises: receiving a first reference signal, where the frequency domain resources where the first reference signal is located include first frequency domain resources and second frequency domain resources; Send first information, the first information including a first measurement value and a first difference, the first measurement value being the speed or Doppler frequency corresponding to the first reference signal located in the first frequency domain resource, the first difference being the difference between the second measurement value and the first measurement value, and the second measurement value being the speed or Doppler frequency corresponding to the first reference signal located in the second frequency domain resource.

2. The information transmission method according to claim 1, wherein: The first difference is mod(x2-x1, X) or mod(x1-x2, X), where mod represents a modulo operation, x2 represents the second measurement value, x1 represents the first measurement value, and X represents the difference between the maximum value and the minimum value of the second measurement value.

3. The information transmission method according to claim 2, wherein: When x2 is greater than or equal to x1, the first difference is x2-x1; when x2 is less than x1, the first difference is x2+X-x1; or, When x1 is greater than or equal to x2, the first difference is x1-x2; when x1 is less than x2, the first difference is x1-x2+X.

4. The information transmission method according to any one of claims 1 to 3, characterized in that: The first information further includes a third measurement value and a fourth measurement value, the third measurement value being the amplitude or phase corresponding to the first measurement value, and the fourth measurement value being the amplitude or phase corresponding to the second measurement value; or, The third measurement value and the second difference, wherein the second difference is the difference between the fourth measurement value and the third measurement value.

5. The information transmission method according to any one of claims 1 to 4, characterized in that: The period of the first reference signal is greater than a first threshold value, and the first threshold value is related to a maximum speed desired to be measured.

6. The information transmission method according to any one of claims 1 to 5, characterized in that: The difference between the frequency corresponding to the second frequency domain resource and the frequency corresponding to the first frequency resource is less than a second threshold, and the second threshold is related to one or more of the period of the first reference signal, the maximum speed expected to be measured, and the frequency corresponding to the first frequency resource.

7. The information transmission method according to any one of claims 1 to 6, characterized in that: The method further comprises: Second information is received, where the second information includes one or more of a maximum speed expected to be measured, a maximum integer ambiguity expected to be measured, and a value range of the first difference.

8. The information transmission method according to any one of claims 1 to 7, characterized in that: The first information also includes a first frequency corresponding to the first frequency domain resource and a second frequency corresponding to the second frequency domain resource; or, The first frequency and a third difference, the third difference is the difference between the second frequency and the first frequency.

9. The information transmission method according to any one of claims 1 to 7, characterized in that: The first reference signal includes a second reference signal and a third reference signal, the second reference signal is located in the first frequency domain resource, the third reference signal is located in the second frequency domain resource, and the second reference signal and the third reference signal have the same period.

10. The information transmission method according to claim 9, characterized in that: The time domain resource where the second reference signal is located is the same as the time domain resource where the third reference signal is located; or, The time interval between the time domain resource where the second reference signal is located and the time domain resource where the third reference signal is located is less than a third threshold.

11. The information transmission method according to any one of claims 1 to 10, characterized in that: The velocity in the first measurement value or the second measurement value is the velocity of one or more paths, the Doppler frequency in the first measurement value or the second measurement value is the Doppler frequency of the one or more paths, and the path corresponds to the target.

12. The information transmission method according to any one of claims 1 to 11, characterized in that: The first measurement value is not equal to the second measurement value.

13. An information transmission method, characterized in that: The method comprises: Sending a first reference signal, where the frequency domain resources where the first reference signal is located include first frequency domain resources and second frequency domain resources; Receive first information, the first information including a first measurement value and a first difference value, the first measurement value being the speed or Doppler frequency corresponding to the first reference signal located in the first frequency domain resource, the first difference value being the difference between a second measurement value and the first measurement value, and the second measurement value being the speed or Doppler frequency corresponding to the first reference signal located in the second frequency domain resource.

14. The information transmission method according to claim 13, characterized in that: The first difference is mod(x2-x1, X) or mod(x1-x2, X), where mod represents a modulo operation, x2 represents the second measurement value, x1 represents the first measurement value, and X represents the difference between the maximum value and the minimum value of the second measurement value.

15. The information transmission method according to claim 13, wherein: When x2 is greater than or equal to x1, the first difference is x2-x1; when x2 is less than x1, the first difference is x2+X-x1; or, When x1 is greater than or equal to x2, the first difference is x1-x2; when x1 is less than x2, the first difference is x1-x2+X.

16. The information transmission method according to any one of claims 13 to 15, characterized in that: The first information further includes a third measurement value and a fourth measurement value, the third measurement value being the amplitude or phase corresponding to the first measurement value, and the fourth measurement value being the amplitude or phase corresponding to the second measurement value; or, The third measurement value and the second difference, wherein the second difference is the difference between the fourth measurement value and the third measurement value.

17. The information transmission method according to any one of claims 13 to 16, characterized in that: The period of the first reference signal is greater than a first threshold value, and the first threshold value is related to a maximum speed desired to be measured.

18. The information transmission method according to any one of claims 13 to 17, characterized in that: The difference between the frequency corresponding to the second frequency domain resource and the frequency corresponding to the first frequency resource is less than a second threshold, and the second threshold is related to one or more of the period of the first reference signal, the maximum speed expected to be measured, and the frequency corresponding to the first frequency resource.

19. The information transmission method according to any one of claims 13 to 18, characterized in that: The method further comprises: Second information is sent, where the second information includes one or more of a maximum speed expected to be measured, a maximum integer ambiguity expected to be measured, and a value range of the first difference.

20. The information transmission method according to any one of claims 13 to 19, characterized in that: The first information also includes a first frequency corresponding to the first frequency domain resource and a second frequency corresponding to the second frequency domain resource; or, The first frequency and a third difference, the third difference is the difference between the second frequency and the first frequency.

21. The information transmission method according to any one of claims 13 to 19, characterized in that: The first reference signal includes a second reference signal and a third reference signal, the second reference signal is located in the first frequency domain resource, the third reference signal is located in the second frequency domain resource, and the second reference signal and the third reference signal have the same period.

22. The information transmission method according to claim 21, characterized in that: The time domain resource where the second reference signal is located is the same as the time domain resource where the third reference signal is located; or, The time interval between the time domain resource where the second reference signal is located and the time domain resource where the third reference signal is located is less than a third threshold.

23. The information transmission method according to any one of claims 13 to 22, characterized in that: The velocity in the first measurement value or the second measurement value is the velocity of one or more paths, the Doppler frequency in the first measurement value or the second measurement value is the Doppler frequency of the one or more paths, and the path corresponds to the target.

24. The information transmission method according to any one of claims 13 to 23, characterized in that: The first measurement value is not equal to the second measurement value.

25. A communication device, characterized in that: The method comprises modules or units for executing the method according to any one of claims 1 to 12.

26. A communication device, characterized in that: The method comprises modules or units for performing the method according to any one of claims 13 to 24.

27. A communication system, characterized in that: include: A communication device for performing the method according to any one of steps 1 to 12, and a communication device for performing the method according to any one of claims 13 to 24.

28. A computer-readable storage medium comprising instructions, which, when executed on a computer, cause the computer to execute the method according to any one of claims 1 to 12, or cause the computer to execute the method according to any one of claims 13 to 24.

29. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method according to any one of claims 1 to 12, or cause the computer to perform the method according to any one of claims 13 to 24.

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