Communication method and communication device

Abstract

Embodiments of the present application disclose a communication method and a communication device for improving positioning accuracy and positioning performance. The method in the embodiments of the present application includes a first communication device determining a first resource. The first resource is used to transmit a first positioning reference signal, the first resource occupies at least two time-domain symbols, the at least two time-domain symbols are located in the same slot, the at least two time-domain symbols include a first time-domain symbol and a second time-domain symbol, and the first resource occupies the same frequency-domain resource on the first time-domain symbol and the second time-domain symbol. The first communication device transmits the first positioning reference signal to a second communication device on the first resource.

Description

[Technical Field]

[0001] This application claims priority to Chinese Patent Application No. 202210689320.7, entitled "Communication Method and Communication Apparatus," filed with the State Intellectual Property Office of the People's Republic of China on June 17, 2022, which is incorporated herein by reference in its entirety.

[0002] The present application relates to the field of communications technology, and in particular to a communication method and a communication device. [Background technology]

[0003] Positioning function is an important function of a communication system. Currently, in the positioning process, a positioning reference signal may be transmitted between a transmitting end device and a receiving end device to locate the transmitting end device and / or the receiving end device. However, how to improve the positioning accuracy is a notable challenge. Summary of the Invention [Means for solving the problem]

[0004] The present application provides a communication method and a communication device for improving positioning accuracy and performance.

[0005] A first aspect of the present application provides a communication method, the method including:

[0006] The first communication device determines a first resource, the first resource is used to transmit a first positioning reference signal, the first resource is located in a first time-frequency unit, the first resource occupies at least two time-domain symbols, the at least two time-domain symbols include a first time-domain symbol and a second time-domain symbol, the first resource occupies the same frequency-domain resource on the first time-domain symbol and the second time-domain symbol, and the first communication device transmits the first positioning reference signal to the second communication device on the first resource.

[0007] From the above solution, it can be learned that the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol. This helps the second communication device perform accurate positioning on the first communication device or the second communication device, improving positioning accuracy. For example, Doppler shift between devices introduces continuous phase changes in the time domain. Therefore, the second communication device can accurately estimate the Doppler shift between the first communication device and the second communication device by using the phase difference between the phase obtained by measuring the first positioning reference signal on the first time domain symbol and the phase obtained by measuring the first positioning reference signal on the second time domain symbol. This improves Doppler shift estimation performance. In this way, the second communication device can compensate for some multipath parameters obtained through measurement based on the Doppler shift, and then use the compensated multipath parameters to perform accurate positioning on the first communication device or the second communication device. This improves positioning accuracy and positioning performance.

[0008] A second aspect of the present application provides a communication method, the method including:

[0009] The second communication device receives a first positioning reference signal transmitted by the first communication device on a first resource, the first resource occupying at least two time domain symbols, the at least two time domain symbols being located in the same slot, the at least two time domain symbols including a first time domain symbol and a second time domain symbol, the first resource occupying the same frequency domain resource on the first time domain symbol and the second time domain symbol, the second communication device measures the first positioning reference signal to obtain a measurement result, the second communication device positions the first communication device or the second communication device based on the measurement result, or the second communication device transmits the measurement result to a third communication device, and the measurement result is used by the third communication device to position the first communication device or the second communication device.

[0010] From the above solution, it can be learned that the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol. In this way, the second communication device can help the first communication device or the second communication device perform accurate positioning, improving positioning accuracy. For example, Doppler shift between devices introduces continuous phase changes in the time domain. Therefore, the second communication device can accurately estimate the Doppler shift between the first communication device and the second communication device by using the phase difference between the phase obtained by measuring the first positioning reference signal on the first time domain symbol and the phase obtained by measuring the first positioning reference signal on the second time domain symbol. This improves Doppler shift estimation performance. In this way, the second communication device can compensate for some multipath parameters obtained through measurement based on the Doppler shift, and then use the compensated multipath parameters to perform accurate positioning on the first communication device or the second communication device. This improves positioning accuracy and positioning performance.

[0011] A third aspect of the present application provides a communication method, the method including:

[0012] The fourth communication device sends first configuration information to the first communication device, where the first configuration information is used to configure a first resource, where the first resource occupies Y time-domain symbols in the time domain, and a comb value corresponding to the first resource is X, where Y is equal to X plus 1, or Y is equal to an integer multiple of X plus 1, or X is smaller than Y and Y is not an integer multiple of X.

[0013] In the above technical solution, the fourth communication device uses the first configuration information to indicate the number of time domain symbols occupied by the first resource and the comb value corresponding to the first resource. The fourth communication device uses several possible relationships between the number of time domain symbols and the comb value to indirectly indicate that the first resource must occupy the same frequency domain resource on the first time domain symbol and the second time domain symbol. In this way, the first communication device determines the first resource to ensure positioning accuracy.

[0014] A fourth aspect of the present application provides a communication method, the method including:

[0015] The fourth communication device transmits first indication information to the first communication device, the first indication information indicating that the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol, the first resource occupies at least two time domain symbols, the at least two time domain symbols are located in the same slot, and the first resource is used to transmit a first positioning reference signal of the first communication device.

[0016] In the above technical solution, the fourth communication device uses the first indication information to indicate that the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol, so that the first communication device determines the first resource to ensure positioning accuracy.

[0017] Based on any one of the first to fourth aspects, in a first implementation form of the present application, the first time-frequency unit occupies one slot, half a slot, or a portion of a time-domain symbol of one slot in the time domain.

[0018] In this implementation, the size of the time domain resource occupied by the first time-frequency unit in the time domain is shown. The first time-frequency unit can be learned to be one slot, half a slot, or a part of a time-domain symbol of one slot. Therefore, the technical solution of the present application can be adapted to positioning scenarios in which the number of available time-domain symbols is limited, for example, to positioning scenarios in which the number of available time-domain symbols on a sidelink is limited.

[0019] Based on any one of the first to fourth aspects or the first implementation form, in a second implementation form of the present application, the first time domain symbol is the first time domain symbol occupied by the first resource, and the second time domain symbol is the last time domain symbol or the penultimate time domain symbol occupied by the first resource.

[0020] In this implementation, the positions of the first time-domain symbol and the second time-domain symbol are shown. The Doppler shift between the devices introduces continuous phase changes in the time domain. Therefore, the above implementation helps the second communication device accurately determine the Doppler shift between the first communication device and the second communication device. In other words, the second communication device can estimate the Doppler shift by using the phase difference between the first phase obtained by measuring the first positioning reference signal on the first time-domain symbol and the second phase obtained by measuring the first positioning reference signal on the second time-domain symbol. However, because the interval between the first time-domain symbol and the second time-domain symbol is large, the phase difference is also large. In this way, the second communication device can accurately estimate the Doppler shift based on the phase difference and ensure the accuracy of the Doppler shift.

[0021] Based on any one of the first to fourth aspects, the first implementation form, or the second implementation form, in a third implementation form of the present application, the first time-domain symbol is an automatic gain control (AGC) symbol, and the first time-domain symbol and the second time-domain symbol are discontinuous.

[0022] In this implementation, the AGC symbols are used to occupy the same frequency domain resources on the time domain symbols where the positioning reference signals are located. Therefore, the second communication device accurately estimates the Doppler shift between the first communication device and the second communication device to ensure positioning accuracy. Furthermore, the problem of insufficient time-frequency resources in positioning scenarios where the number of available time domain symbols is limited is effectively solved. For example, this method is suitable for positioning scenarios where the number of available time domain symbols on the sidelink is limited.

[0023] Based on any one of the first to fourth aspects or any one of the first to third implementation forms, in a fourth implementation form of the present application, the first resource occupies 5, 7, 9, or 11 time domain symbols in the time domain.

[0024] In this implementation, the first resource occupies an odd number of time domain symbols. The present application provides an implementation of a frequency domain resource occupied by the first resource in the frequency domain for this implementation. This helps to adapt to positioning scenarios where the number of available time domain symbols is limited, for example, where the number of available time domain symbols on the sidelink is limited.

[0025] Based on any one of the first to fourth aspects or any one of the first to fourth implementation forms, in a fifth implementation form of the present application, the number of time domain symbols occupied by the first resource in the time domain is one greater than the comb value corresponding to the first resource.

[0026] In this implementation, the number of time domain symbols occupied by the first resource is one greater than the comb value corresponding to the first resource. Therefore, the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol. In this way, Doppler shift estimation performance is ensured and positioning accuracy is improved.

[0027] Based on any one of the first to fourth aspects or any one of the first to fourth implementation forms, in a sixth implementation form of the present application, a first resource occupies Y time-domain symbols in the time domain, a comb value corresponding to the first resource is X, and Y is equal to an integer multiple of X plus 1.

[0028] In this implementation, the first resource occupies Y time-domain symbols in the time domain, and the comb value corresponding to the first resource is X, where Y is equal to an integer multiple of X plus 1. Therefore, the first resource occupies the same frequency-domain resource on the first time-domain symbol and the second time-domain symbol. In this way, Doppler shift estimation performance is ensured and positioning accuracy is improved. In addition, Y may be equal to an integer multiple of X plus 1. X and Y are related to the number of available time-domain symbols in one slot. A larger number of available time-domain symbols indicates a larger value of X and a larger value of Y. A larger value of X indicates a larger value of Y, which helps increase the multiplexing capacity of the slot.

[0029] Based on any one of the first to fourth aspects or any one of the first to fourth implementation forms, in a seventh implementation form of the present application, a first resource occupies Y time-domain symbols in the time domain, and a comb value corresponding to the first resource is X, where X is smaller than Y and Y is not an integer multiple of X.

[0030] This implementation helps ensure that the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol. In this way, Doppler shift estimation performance is ensured and positioning accuracy is improved. In addition, X is smaller than Y, and Y is not an integer multiple of X. X and Y are related to the number of available time domain symbols in one slot. A larger number of available time domain symbols indicates a larger value of X and a larger value of Y. A larger value of X indicates a larger value of Y, which helps increase the multiplexing capacity of the slot.

[0031] Based on any one of the first to fourth aspects or any one of the first to seventh implementation forms, in an eighth implementation form of the present application, the at least two time domain symbols further include a third time domain symbol, and the first resource occupies the same frequency domain resource on the third time domain symbol and the first time domain symbol.

[0032] In this implementation, the first resource occupies the same frequency domain resource on the third time domain symbol and the fourth time domain symbol, which helps the second communication device accurately determine the Doppler shift between the first communication device and the second communication device.

[0033] Based on any one of the first to fourth aspects or any one of the first to seventh implementation forms, in a ninth implementation form of the present application, the at least two time domain symbols further include a fourth time domain symbol and a fifth time domain symbol, and the first resource occupies the same frequency domain resource on the fourth time domain symbol and the fifth time domain symbol.

[0034] In this implementation, the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol, and the first resource occupies the same frequency domain resource on the fourth time domain symbol and the fifth time domain symbol, which helps the second communication device to accurately determine the Doppler shift between the first communication device and the second communication device.

[0035] Based on any one of the first to fourth aspects or any one of the first to ninth implementation forms, in a tenth implementation form of the present application, there is an equal frequency domain spacing between any two adjacent subcarriers.

[0036] In this implementation, there is equal frequency-domain spacing between any two adjacent subcarriers of the first resource on the same time-domain symbol, which helps implement multi-user multiplexing of time-frequency resources and improve the multiplexing capacity of a slot.

[0037] Based on any one of the first to fourth aspects or any one of the first to tenth implementation forms, in an eleventh implementation form of the present application, the bandwidth occupied by the first resource in the frequency domain is a resource pool bandwidth.

[0038] Based on the first aspect or any one of the first to eleventh implementation forms, in a twelfth implementation form of the present application, the method further includes:

[0039] The first communication device receives first configuration information from the fourth communication device, the first configuration information is used to configure a first resource, where the first resource occupies Y time-domain symbols in the time domain, and a comb value corresponding to the first resource is X, where Y is equal to X plus 1, or Y is equal to an integer multiple of X plus 1, or X is smaller than Y and Y is not an integer multiple of X.

[0040] The first communication device determining the first resource includes:

[0041] The first communication device determines a first resource based on the first configuration information.

[0042] In this implementation, the fourth communication device uses the first configuration information to indicate the number of time domain symbols occupied by the first resource and the comb value corresponding to the first resource. The fourth communication device uses several possible relationships between the number of time domain symbols and the comb value to indirectly indicate that the first resource must occupy the same frequency domain resource on the first time domain symbol and the second time domain symbol. In this way, the first communication device determines the first resource to ensure positioning accuracy.

[0043] Based on the first aspect or any one of the first to eleventh implementation forms, in a thirteenth implementation form of the present application, the method further includes:

[0044] The first communication device receives first indication information from the fourth communication device, the first indication information indicating that the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol.

[0045] The first communication device determining the first resource includes:

[0046] The first communication device determines a first resource based on the first indication information.

[0047] In this implementation, the fourth communication device uses the first indication information to indicate that the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol, so that the first communication device determines the first resource to ensure positioning accuracy.

[0048] In a fourteenth implementation form of the present application based on any one of the first to fourth aspects or any one of the first to thirteenth implementation forms, the first time-frequency unit further includes a second resource, the second resource is used to transmit a second positioning reference signal of the fifth communication device, the second resource occupies at least two time domain symbols, the at least two time domain symbols include a sixth time domain symbol and a seventh time domain symbol, and the second resource occupies the same frequency domain resource on the sixth time domain symbol and the seventh time domain symbol. The first resource and the second resource occupy the same time domain resource, and the frequency domain resources occupied by the first resource and the second resource on the same time domain symbol satisfy a frequency division multiplexing relationship, or the first resource and the second resource occupy different time domain resources.

[0049] In this implementation, the frequency domain resources occupied by the first resource and the second resource on the same time domain symbol may satisfy a frequency division multiplexing relationship. Alternatively, the first resource and the second resource may occupy different time domain resources. This helps implement multi-user multiplexing of time-frequency resources and improve the multiplexing capacity of multiple users in a single slot.

[0050] A fifth aspect of the present application provides a first communication device, a processing module configured to determine a first resource, a processing module, wherein the first resource is used to transmit a first positioning reference signal, the first resource occupies at least two time domain symbols, the at least two time domain symbols are located in the same slot, the at least two time domain symbols include a first time domain symbol and a second time domain symbol, and the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol; and a transceiver module configured to transmit a first positioning reference signal to a second communication device over a first resource; Includes:

[0051] A sixth aspect of the present application provides a second communication device, a transceiver module configured to receive a first positioning reference signal transmitted by a first communication device on a first resource; The first resource occupies at least two time domain symbols. , small the at least two time domain symbols include a first time domain symbol and a second time domain symbol, and the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol; and a processing module configured to measure the first positioning reference signal to obtain a measurement result, and to position the first communication device or the second communication device based on the measurement result. Includes:

[0052] A seventh aspect of the present application provides a fourth communication device, and a transceiver module configured to transmit first configuration information to a first communication device, the first configuration information being used to configure a first resource, the first resource occupying Y time-domain symbols in the time domain, a comb value corresponding to the first resource being X, and Y being equal to X plus 1, or Y being equal to an integer multiple of X plus 1, or X being less than Y and Y not being an integer multiple of X.

[0053] An eighth aspect of the present application provides a fourth communication device, and a transceiver module configured to transmit first indication information to the first communication device, the first indication information indicating that the first resource occupies the same frequency domain resource on a first time domain symbol and a second time domain symbol, the first resource occupies at least two time domain symbols, the at least two time domain symbols are located in the same slot, and the first resource is used to transmit a first positioning reference signal of the first communication device.

[0054] Based on any one of the fifth to eighth aspects, in a first implementation form of the present application, the first time-frequency unit occupies one slot, half a slot, or a portion of a time-domain symbol of one slot in the time domain.

[0055] Based on any one of the fifth to eighth aspects or the first implementation form, in a second implementation form of the present application, the first time domain symbol is the first time domain symbol occupied by the first resource, and the second time domain symbol is the last time domain symbol or the penultimate time domain symbol occupied by the first resource.

[0056] Based on any one of the fifth to eighth aspects, the first implementation form, or the second implementation form, in a third implementation form of the present application, the first time domain symbol is an AGC symbol, and the first time domain symbol and the second time domain symbol are discontinuous.

[0057] Based on any one of the fifth to eighth aspects or any one of the first to third implementation forms, in a fourth implementation form of the present application, the first resource occupies 5, 7, 9, or 11 time domain symbols in the time domain.

[0058] Based on any one of the fifth to eighth aspects or any one of the first to fourth implementation forms, in a fifth implementation form of the present application, the number of time domain symbols occupied by the first resource in the time domain is one greater than the comb value corresponding to the first resource.

[0059] Based on any one of the fifth to eighth aspects or any one of the first to fourth implementation forms, in a sixth implementation form of the present application, a first resource occupies Y time-domain symbols in the time domain, a comb value corresponding to the first resource is X, and Y is equal to an integer multiple of X plus 1.

[0060] Based on any one of the fifth to eighth aspects or any one of the first to fourth implementation forms, in a seventh implementation form of the present application, a first resource occupies Y time-domain symbols in the time domain, and a comb value corresponding to the first resource is X, where X is smaller than Y and Y is not an integer multiple of X.

[0061] Based on any one of the fifth to eighth aspects or any one of the first to seventh implementation forms, in an eighth implementation form of the present application, the at least two time domain symbols further include a third time domain symbol, and the first resource occupies the same frequency domain resource on the third time domain symbol and the first time domain symbol.

[0062] Based on any one of the fifth to eighth aspects or any one of the first to seventh implementation forms, in a ninth implementation form of the present application, the at least two time domain symbols further include a fourth time domain symbol and a fifth time domain symbol, and the first resource occupies the same frequency domain resource on the fourth time domain symbol and the fifth time domain symbol.

[0063] Based on any one of the fifth to eighth aspects or any one of the first to ninth implementation forms, in a tenth implementation form of the present application, there is an equal frequency domain spacing between any two adjacent subcarriers.

[0064] Based on any one of the fifth to eighth aspects or any one of the first to tenth implementation forms, in an eleventh implementation form of the present application, the bandwidth occupied by the first resource in the frequency domain is a resource pool bandwidth.

[0065] Based on the fifth aspect or any one of the first to eleventh implementation forms, in a twelfth implementation form of the present application, the transceiver module comprises: and further configured to receive first configuration information from the fourth communication device, the first configuration information being used to configure a first resource, where the first resource occupies Y time-domain symbols in the time domain, and a comb value corresponding to the first resource is X, where Y is equal to X plus 1, or Y is equal to an integer multiple of X plus 1, or X is smaller than Y and Y is not an integer multiple of X.

[0066] The processing module is It is particularly configured to determine the first resource based on the first configuration information.

[0067] Based on the fifth aspect or any one of the first to eleventh implementation forms, in a thirteenth implementation form of the present application, the transceiver module comprises: and further configured to receive first indication information from the fourth communication device, the first indication information indicating that the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol.

[0068] The processing module is It is particularly configured to determine the first resource based on the first indication information.

[0069] In a fourteenth implementation form of the present application, based on any one of the fifth to eighth aspects or any one of the first to thirteenth implementation forms, the first time-frequency unit further includes a second resource, and the second resource is used to transmit a second positioning reference signal of the fifth communication device, the second resource occupies at least two time domain symbols, and the at least two time domain symbols include a sixth time domain symbol and a seventh time domain symbol, and the second resource occupies the same frequency domain resource on the sixth time domain symbol and the seventh time domain symbol. The first resource and the second resource occupy the same time domain resource, and the frequency domain resources occupied by the first resource and the second resource on the same time domain symbol satisfy a frequency division multiplexing relationship, or the first resource and the second resource occupy different time domain resources.

[0070] For a description of the beneficial effects shown in the fifth aspect, please refer to the first aspect. Details will not be described again. For a description of the beneficial effects shown in the sixth aspect, please refer to the second aspect. Details will not be described again. For a description of the beneficial effects shown in the seventh aspect, please refer to the third aspect. Details will not be described again. For a description of the beneficial effects shown in the eighth aspect, please refer to the fourth aspect. Details will not be described again.

[0071] A ninth aspect of the present application provides a communications device, the communications device including a processor configured to invoke and execute a computer program stored in a memory, such that the processor can perform any one of the implementations of the first to fourth aspects.

[0072] Optionally, the communication device further comprises a transceiver, the processor further configured to control the transceiver to transmit and receive signals.

[0073] Optionally, the communication device includes a memory, the memory storing the computer program.

[0074] A tenth aspect of the present application provides a computer program product comprising instructions, which when executed on a computer, enable the computer to perform any implementation of any one of the first to fourth aspects.

[0075] An eleventh aspect of the present application provides a computer-readable storage medium comprising computer instructions, which, when executed on a computer, enable the computer to perform any implementation of any one of the first to fourth aspects.

[0076] A twelfth aspect of the present application provides a chip device, the chip device including a processor, the processor connected to a memory and configured to invoke a program stored in the memory to enable any implementation of any one of the first to fourth aspects.

[0077] A thirteenth aspect of the present application provides a communication system, the communication system including a first communication device according to the fifth aspect and a second communication device according to the sixth aspect.

[0078] Optionally, the communication system further includes a fourth communication device according to the seventh aspect or a fourth communication device according to the eighth aspect.

[0079] According to the above technical solutions, it can be learned that the embodiments of the present application have the following advantages:

[0080] From the above technical solution, it can be learned that a first communication device determines a first resource. The first resource is used to transmit a first positioning reference signal, the first resource occupying at least two time-domain symbols, the at least two time-domain symbols being located in the same slot, the at least two time-domain symbols including a first time-domain symbol and a second time-domain symbol, and the first resource occupying the same frequency-domain resource on the first time-domain symbol and the second time-domain symbol. The first communication device transmits the first positioning reference signal to a second communication device on the first resource. It can be learned that the first resource occupies the same frequency-domain resource on the first time-domain symbol and the second time-domain symbol. This helps the second communication device perform accurate positioning on the first communication device or the second communication device and improves positioning accuracy. For example, Doppler shift between devices introduces continuous phase changes in the time domain. Therefore, the second communication device can accurately estimate the Doppler shift between the first communication device and the second communication device by using the phase difference between the phase obtained by measuring the first positioning reference signal on the first time-domain symbol and the phase obtained by measuring the first positioning reference signal on the second time-domain symbol. This improves Doppler shift estimation performance. In this way, the second communication device can compensate for some multipath parameters obtained through measurement based on the Doppler shift, and then perform accurate positioning on the first communication device or the second communication device using the compensated multipath parameters. This improves positioning accuracy and positioning performance. [Brief explanation of the drawings]

[0081] [Figure 1] 1 is a diagram of a communication system according to an embodiment of the present application; [Figure 2] FIG. 2 is another diagram of a communication system according to an embodiment of the present application. [Figure 3] FIG. 2 is another diagram of a communication system according to an embodiment of the present application. [Figure 4]FIG. 2 is another diagram of a communication system according to an embodiment of the present application. [Figure 5A] FIG. 10 is a diagram of comb values ​​according to an embodiment of the present application. [Figure 5B] FIG. 1 is a diagram of an embodiment of a communication method according to an embodiment of the present application. [Figure 6A] FIG. 2 is a diagram of a first resource according to an embodiment of the present application. [Figure 6B] FIG. 2 is another diagram of a first resource according to an embodiment of the present application; [Figure 6C] FIG. 2 is another diagram of a first resource according to an embodiment of the present application; [Figure 7A] FIG. 2 is another diagram of a first resource according to an embodiment of the present application; [Figure 7B] FIG. 2 is another diagram of a first resource according to an embodiment of the present application; [Figure 8A] FIG. 2 is another diagram of a first resource according to an embodiment of the present application; [Figure 8B] FIG. 2 is another diagram of a first resource according to an embodiment of the present application; [Figure 8C] FIG. 2 is another diagram of a first resource according to an embodiment of the present application; [Figure 8D] FIG. 2 is another diagram of a first resource according to an embodiment of the present application; [Figure 9A] FIG. 2 is another diagram of a first resource according to an embodiment of the present application; [Figure 9B] FIG. 2 is another diagram of a first resource according to an embodiment of the present application; [Figure 10A] FIG. 2 is a diagram of a first resource, a second resource, a third resource, and a fourth resource according to an embodiment of the present application. [Figure 10B] FIG. 2 is a diagram of a first resource, a second resource, a third resource, and a fourth resource according to an embodiment of the present application. [Figure 11] FIG. 2 is a diagram of a first resource and a second resource according to an embodiment of the present application. [Figure 12A] FIG. 2 is another diagram of a first resource and a second resource according to an embodiment of the present application; [Figure 12B] FIG. 2 is another diagram of a first resource and a second resource according to an embodiment of the present application; [Figure 12C] FIG. 2 is another diagram of a first resource and a second resource according to an embodiment of the present application; [Figure 13] FIG. 2 is another diagram of a first resource according to an embodiment of the present application; [Figure 14] FIG. 2 is a structural diagram of a first communication device according to an embodiment of the present application; [Figure 15] FIG. 10 is a structural diagram of a second communication device according to an embodiment of the present application; [Figure 16] FIG. 10 is a structural diagram of a fourth communication device according to an embodiment of the present application. [Figure 17] FIG. 2 is a diagram of the structure of a terminal device according to an embodiment of the present application; [Figure 18] 1 is a diagram of the structure of a communication device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0082] The embodiments of the present application provide a communication method and a communication device to improve positioning accuracy and performance.

[0083] The following clearly and completely describes the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. It is clear that the described embodiments are only a part, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative efforts shall fall within the protection scope of this application.

[0084] References to "one embodiment," "some embodiments," etc. described in this application indicate that one or more embodiments of the application include the particular feature, structure, or characteristic described with reference to the embodiment. Thus, the appearance of phrases such as "in one embodiment," "in some embodiments," "in some other embodiments," "in other embodiments," etc. in different places in this specification are not necessarily meant to refer to the same embodiment. Instead, these phrases mean "one or more, but not all, of the embodiments," unless specifically emphasized otherwise. The terms "comprising," "including," "having," and variations thereof all mean "including, but not limited to," unless specifically emphasized otherwise.

[0085] In the description of this application, unless otherwise specified, " / " means "or." For example, A / B may mean A or B. The term "and / or" in this specification describes only the associative relationship between related objects and indicates that three relationships may exist. For example, A and / or B may represent the following three cases: when only A is present, when both A and B are present, and when only B is present. In addition, "at least one" means one or more, and "multiple" means two or more. "At least one of the following items (moieties)" or similar expressions refers to any combination of these items, including any combination of a singular item (moiety) or multiple items (moieties). For example, at least one of a, b, or c may refer to a, b, c, a and b, a and c, b and c, or a, b, and c. a, b, and c may be singular or plural.

[0086] The technical solution of the present application can be applied to various communication systems, such as a fifth generation (5G) mobile communication system, a new radio (NR) system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a universal mobile telecommunication system (UMTS), a mobile communication system after 5G networks (e.g., a 6G mobile communication system), a vehicle-to-everything (V2X) communication system, a device-to-device (D2D) communication system, etc.

[0087] In the following, with reference to Figures 1 to 4, some scenarios to which the present application can be applied are described.

[0088] Figure 1 is a diagram of a communication system according to one embodiment of the present application. Please refer to Figure 1. The communication system includes an access network device 102, an access and mobility management function (AMF) 103, and a location management function (LMF) 104.

[0089] Optionally, the terminal device 101 is connected to an access network device 102 through an interface, and the access network device is connected to an AMF 103 through an interface, and the AMF 103 is connected to the LMF 104 through an interface. The LMF 104 is configured to perform positioning calculations and management of the location of the terminal device 101.

[0090] For example, the terminal device 101 communicates with the access network device 102 via the NR-Uu interface. 102 , and the access network device 102 is connected to the AMF 103 through an NG-C interface. The AMF 103 is connected to the LMF 104 through an NL1 interface. The technical solution of the present application is implemented between the terminal device 101 and the access network device 102, so that the LMF 104 locates the terminal device 101.

[0091] 1 only shows an example in which the communication system includes an access network device 102. However, in practical applications, the communication system may further include more access network devices, which is not specifically limited in this application.

[0092] Figure 2 is a diagram of another implementation form of a communication system according to an embodiment of the present application. Please refer to Figure 2. The communication system includes a terminal device 201 and a terminal device 202. The terminal device 201 and the terminal device 202 are outside the signal coverage of an access network device. The terminal device 201 communicates with the terminal device 202 through a proximity service communication 5 (PC5) interface. The terminal device 201 can locate the terminal device 201 and / or the terminal device 202 using the technical solutions of the present application.

[0093] Figure 3 is a diagram of another implementation of a communication system according to an embodiment of the present application. Please refer to Figure 3. The communication system includes a terminal device 301, a roadside unit (RSU) 302, an RSU 303, and an RSU 304. The terminal device 301, the RSU 302, and the RSU 304 are external signal coverage areas of an access network device. As shown in Figure 3, the terminal device 301 communicates with the RSU through a PC5 interface. The terminal device 301 and the RSU can locate the terminal device 301 using the technical solutions of the present application.

[0094] It should be noted that in the communication system shown in FIG. 3, the form of the RSU is merely an example, and is not particularly limited to the RSU in this application.

[0095] It should be noted that an RSU is a roadside unit deployed on the roadside, which can support sidelink communication and positioning-related protocols and provide wireless communication capabilities to terminal devices. The RSU may be various forms of roadside station, access point, or sidelink device. In the case of an access network device, the RSU is a terminal device. In the case of a terminal device, the RSU may function as an access network device.

[0096] 4 is a diagram of another implementation of a communication system according to an embodiment of the present application. The communication system includes a terminal device 401, a terminal device 402, an access network device 403, and an LMF 404. The terminal device 401 is located in the signal coverage of the access network device 403, and the terminal device 402 is not located in the signal coverage of the access network device 403. The terminal device 401 and the terminal device 402 may implement the technical solutions of the present application and transmit corresponding measurement results to the LMF 404 through the access network device 403, so that the LMF 404 positions the terminal device 401 and / or the terminal device 402.

[0097] In the communication systems shown in FIGS. 1 and 4, the LMF is a name in the current communication system. In future communication systems, the name of the LMF may change as the communication system evolves. The name of the LMF is not limited in this application. For example, the LMF may be referred to as a location management device, and the location management device is configured to perform positioning calculation of the location of a terminal device. In the current communication system or a future communication system, any functional network element having a different name and a function similar to the LMF may be understood as the location management device in the embodiments of this application and is applicable to the communication method provided in the embodiments of this application.

[0098] The above-mentioned communication system to which the present application is applicable is only an example. In practical application, the present application can be further applied to other communication systems with positioning requirements, which are not specifically limited in the present application. The above-mentioned examples are not intended to limit the technical solutions of the present application.

[0099] In the following, the terminal device and the access network device in this application will be described.

[0100] An access network device is deployed in a radio access network and provides wireless communication functions to terminal devices. The access network device may be a base station, and the base station may be various types of macro base station, micro base station (also called small cell), relay station, access point (AP), wearable device, in-vehicle device, etc. Alternatively, the base station may be a transmission and reception point (TRP), transmission measurement function (TMF), etc. For example, the base station in the embodiment of the present application may be a base station in new radio (NR). A base station in 5G new radio (NR) may also be called a transmission reception point (TRP), transmission point (TP), next generation Node B (ngNB), or evolutionary Node B (eNB or eNodeB) in a long term evolution (LTE) system.

[0101] The terminal device may be a wireless terminal device capable of receiving scheduling and instruction information from an access network device, which may be a device providing voice and / or data connectivity to a user, a handheld device with wireless connectivity, or another processing device connected to a wireless modem.

[0102] A terminal device, also referred to as user equipment (UE), mobile station (MS), mobile terminal (MT), etc., is a device including a wireless communication function (providing voice / data connection for a user), for example, a handheld device or an in-vehicle device with a wireless connection function. Currently, some examples of terminal devices include a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a train, a car, an unmanned aerial vehicle, an airplane, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal for industrial control, a wireless terminal for the Internet of Vehicles, a wireless terminal for self-driving, a wireless terminal for smart grids, a wireless terminal for transportation safety, a wireless terminal for smart cities, etc. For example, a wireless terminal in the Internet of Vehicles may be an in-vehicle device, an entire vehicle device, an in-vehicle module, a vehicle, etc. The wireless terminal in industrial control may be a robot or the like.

[0103] In a positioning process, a positioning reference signal is transmitted between different communication devices to locate the communication devices. The movement of the communication devices introduces a Doppler shift into the positioning process, which affects the positioning accuracy, resulting in low positioning accuracy. For example, in a V2X system, in a positioning process such as vehicle-to-vehicle ranging or angle measurement, the movement of the vehicles introduces a Doppler shift, which affects the positioning accuracy. This application provides a corresponding technical solution for improving positioning accuracy and performance. According to the technical solution of this application, the second communication device can accurately estimate the Doppler shift and perform high-precision positioning.

[0104] A communication system to which the present application is applicable includes a first communication device and a second communication device. Optionally, the communication system further includes a third communication device, a fourth communication device, and / or a fifth communication device.

[0105] In the following, several possible implementations of the first communication device and the second communication device are described.

[0106] Implementation form 1: The first communication device is a first terminal device, and the second communication device is a first access network device.

[0107] In implementation form 1, optionally, the communication system further includes a third communication device, and the third communication device may be a location management device.

[0108] In implementation form 1, optionally, the fourth communication device and the second communication device may be the same communication device, in other words, the second communication device may be an access network device.

[0109] In implementation form 1, optionally, the communication system further includes a fifth communication device, and the fifth communication device may be a second terminal device.

[0110] For example, as shown in FIG. 1, the first communication device is a terminal device 101, the second communication device and the fourth communication device are the same communication device, the second communication device is an access network device 102, and the third communication device is an LMF 104.

[0111] Implementation 2: The first communication device is an access network device, and the second communication device is a first terminal device.

[0112] In implementation form 2, optionally, the communication system further includes a third communication device, and the third communication device may be a location management device. Optionally, the communication system further includes a fifth communication device, and the fifth communication device may be a second terminal device.

[0113] For example, as shown in FIG. 1, the first communication device is an access network device 102 , the second communication device is a terminal device 101 , and the third communication device is an LMF 104 .

[0114] Implementation 3: The first communication device is a first terminal device, and the second communication device is a second terminal device.

[0115] In implementation form 3, optionally, the communication system further includes a fourth communication device, and the fourth communication device may be an access network device. Optionally, the communication system further includes a fifth communication device, and the fifth communication device may be a fourth terminal device.

[0116] In implementation form 3, optionally, the communication system further includes a third communication device, and the third communication device may be a location management device. Alternatively, the third communication device and the fourth communication device are the same communication device, that is, the third communication device is an access network device.

[0117] For example, as shown in FIG. 4, the first communication device is a terminal device 401, the second communication device is a terminal device 402, the fourth communication device is an access network device 403, and the third communication device is an LMF 404.

[0118] Implementation 4: The first communication device is a first terminal device, and the second communication device is an RSU.

[0119] In implementation form 4, optionally, the fourth communication device and the second communication device are the same communication device.

[0120] In implementation form 4, optionally, the communication system further includes a fifth communication device, and the fifth communication device may be a second terminal device. For example, as shown in Figure 3, the first communication device is the terminal device 301, the fourth communication device and the second communication device are the same communication device, and the second communication device is the RSU 302.

[0121] In implementation form 4, optionally, the communication system further includes a third communication device. For example, the third communication device is a location management device.

[0122] Implementation 5: The first communication device is an RSU, and the second communication device is a first terminal device.

[0123] In implementation form 5, optionally, the fourth communication device and the first communication device are the same communication device. Optionally, the communication system further includes a fifth communication device, and the fifth communication device may be a second terminal device.

[0124] In implementation form 5, optionally, the communication system further includes a third communication device. For example, the third communication device is a location management device.

[0125] The implementation forms of the first communication device to the fifth communication device are merely examples and do not constitute limitations on the present application. The first communication device to the fifth communication device may further have other implementation forms, which are not specifically limited in the present application.

[0126] The following explains technical terms used in this application.

[0127] Comb value corresponding to the first resource: Generally, the comb value is the difference between the indexes of any two adjacent subcarriers of the subcarriers occupied by the resource on one time-domain symbol, or the number of subcarriers between any two adjacent subcarriers of the subcarriers occupied by the resource on one time-domain symbol plus one. For example, as shown in FIG. 5A, the resource includes a time-frequency resource represented by the shaded area in FIG. 5A. The resource occupies subcarrier 0, subcarrier 4, subcarrier 8, subcarrier 12, subcarrier 16, and subcarrier 20 on time-domain symbol 0. There are three subcarriers between subcarrier 0 and subcarrier 4, and three subcarriers between subcarrier 4 and subcarrier 8. Similarly, there are three subcarriers between subcarrier 16 and subcarrier 20. It can be learned that the comb value is 4. For the first resource, the first resource occupies at least two time-domain symbols. The comb value corresponding to the first resource is the difference between the indexes of any two adjacent subcarriers of the subcarriers occupied by the first resource on each time-domain symbol, or the number of subcarriers between any two adjacent subcarriers of the subcarriers occupied by the first resource on each time-domain symbol plus 1. The first resource has the same comb value on each time-domain symbol. The subcarriers occupied by the first resource on each time-domain symbol are evenly distributed or evenly spaced. For example, as shown in Figure 6B, the first resource includes the shaded area shown in Figure 6B. The comb value of the first resource on each time-domain symbol is 4.

[0128] Below, the technical solutions of the present application are described with reference to specific embodiments.

[0129] 5B is a diagram of an embodiment of a communication method according to an embodiment of the present application. Please refer to FIG. 5B. The communication method includes:

[0130] 501: A first communication device determines a first resource.

[0131] The first resource is used to transmit a first positioning reference signal, the first resource occupies at least two time-domain symbols, the at least two time-domain symbols are located in the same slot, the at least two time-domain symbols include a first time-domain symbol and a second time-domain symbol, and the first resource occupies the same frequency-domain resource on the first time-domain symbol and the second time-domain symbol.

[0132] Optionally, in the frequency domain, the first resource may occupy a bandwidth part (BWP) configured in the communication system, may occupy a resource pool bandwidth, may occupy a portion of the resource pool bandwidth, may occupy at least one resource block (RB), etc., which is not specifically limited in the present application.

[0133] Optionally, the bandwidth portion is an operating bandwidth of the communication system, and the resource pool bandwidth is typically less than or equal to the bandwidth portion.

[0134] Optionally, for the first communication device, the first resource may be all resources used by the first communication device to transmit the first positioning reference signal. Alternatively, for the first communication device, more resources may be further configured to transmit the first positioning reference signal. In other words, the first resource may be a portion of the resources used by the first communication device to transmit the first positioning reference signal.

[0135] For example, as shown in FIG. 6A , in a sidelink (SL) communication system, resources used by a first communication device to transmit a first positioning reference signal occupy a resource pool bandwidth in the frequency domain, and the resource pool bandwidth includes subchannel 0 to subchannel 4. Each subchannel occupies two RBs in the frequency domain. Each RB includes 12 subcarriers. The first resource occupies a bandwidth corresponding to subchannel 0 in the frequency domain. In other words, the first resource is a portion of resources used by the first communication device to transmit the first positioning reference signal. The first resource occupies time domain symbol 1 to time domain symbol 5 in the time domain. The first time domain symbol is time domain symbol 1, and the second time domain symbol is time domain symbol 5. As shown in FIG. 6A , subchannel 0 occupies the same frequency domain resources on time domain symbol 1 and time domain symbol 5, specifically subcarrier 2, subcarrier 6, subcarrier 10, subcarrier 14, subcarrier 18, and subcarrier 22. However, other subchannels may occupy the same subcarriers on time domain symbol 1 and time domain symbol 5, or may occupy different subcarriers. This is not specifically limited in the present application. In other words, among the resources used by the first communication device to transmit the first positioning reference signal, in addition to the first resource, other resources may occupy the same frequency domain resources on the first time domain symbol and the second time domain symbol, or may occupy different frequency domain resources on the first time domain symbol and the second time domain symbol. This is not specifically limited in the present application.

[0136] The above example is described using a subchannel as an example. In practice, the first resource may be any bandwidth portion of the resource pool bandwidth, and does not depend on the structure of the subchannel. For the purpose of explanation, the following mainly uses an example in which the first resource is all resources used by the first communication device to transmit the first positioning reference signal.

[0137] Optionally, the first resource is located in a first time-frequency unit, and the first time-frequency unit occupies one slot in the time domain, or half a slot, or a portion of a time-domain symbol of one slot.

[0138] For example, in a sidelink positioning scenario, the time domain symbols occupied by each SL slot may be used for SL transmission. A first time-frequency unit may occupy an SL slot in the time domain. For example, in a sidelink positioning scenario, one SL slot is divided into two sub-slots, and the first time-frequency unit occupies one sub-slot in the time domain, i.e., half of the slot. It can be understood that in practical applications, the communication system allocates a sub-slot to the first communication device for use.

[0139] It should be noted that the number of time domain symbols occupied by each subslot (or half of a slot) should be determined by referring to the number of time domain symbols occupied by each SL slot. Specifically, the number of time domain symbols occupied by each subslot is not limited in this application. For example, if each SL slot occupies 14 time domain symbols, each subslot occupies 7 time domain symbols. For example, if each SL slot occupies 11 time domain symbols, the SL slot is divided into two subslots, one subslot occupies 5 time domain symbols and the other subslot occupies 6 time domain symbols.

[0140] For example, in a sidelink positioning scenario, five, seven, nine, or eleven time domain symbols of each SL slot may be used. In this case, the first time-frequency unit may be understood as a portion of the time domain symbol of the SL slot. Alternatively, the time domain symbol in each SL slot and configured to transmit the first positioning reference signal may be understood as the time domain symbol occupied by the first time-frequency unit.

[0141] It should be noted that the portion of the time domain symbols of one slot occupied by the first time frequency unit may be contiguous or discontinuous, which is not specifically limited in this application.

[0142] It should be noted that in this specification, a time domain symbol is used as the time domain unit for the purpose of explanation. In actual applications, the time domain unit may alternatively be a unit of another granularity. For example, two time domain symbols are used as one time domain unit, or half a time domain symbol is used as one time domain unit. This is not specifically limited in this application.

[0143] Optionally, the first time domain symbol is the first time domain symbol occupied by the first resource, and the second time domain symbol is the last time domain symbol or the penultimate time domain symbol occupied by the first resource.

[0144] For example, as shown in Figure 6B, the first resource occupies five time domain symbols, from time domain symbol 1 to time domain symbol 5, respectively. The subcarriers occupied by the first resource on the first time domain symbol (i.e., time domain symbol 1) and the last time domain symbol (i.e., time domain symbol 5) are the same. As shown in Figure 6B, the subcarriers occupied by the first resource on time domain symbol 1 and time domain symbol 5 are all subcarrier 0, subcarrier 4, subcarrier 8, subcarrier 12, subcarrier 16, and subcarrier 20.

[0145] For example, as shown in Figure 6C, the first resource occupies five time domain symbols, from time domain symbol 1 to time domain symbol 5, respectively. The subcarriers occupied by the first resource on the first time domain symbol (i.e., time domain symbol 1) and the penultimate time domain symbol (i.e., time domain symbol 4) are the same. As shown in Figure 6C, the subcarriers occupied by the first resource on time domain symbol 1 and time domain symbol 4 are all subcarrier 0, subcarrier 4, subcarrier 8, subcarrier 12, subcarrier 16, and subcarrier 20.

[0146] The second communication device may measure the first positioning reference signal received on the first time domain symbol to obtain the first phase and measure the first positioning reference signal received on the second time domain symbol to obtain the second phase. The second communication device may estimate a Doppler shift between the first communication device and the second communication device using a phase difference between the first phase and the second phase.

[0147] The Doppler shift between devices introduces continuous phase changes in the time domain. Therefore, the above implementation helps the second communication device accurately determine the Doppler shift between the first communication device and the second communication device. In other words, the second communication device can estimate the Doppler shift by using the phase difference between a first phase obtained by measuring the first positioning reference signal on the first time-domain symbol and a second phase obtained by measuring the first positioning reference signal on the second time-domain symbol. However, because the interval between the first time-domain symbol and the second time-domain symbol is large, the phase difference is also large. In this way, the second communication device can accurately estimate the Doppler shift based on the phase difference and ensure the accuracy of the Doppler shift.

[0148] Optionally, the first time domain symbol is an AGC symbol, and the first time domain symbol and the second time domain symbol are non-consecutive.

[0149] For example, as shown in Figure 7A, the first resource occupies five time domain symbols, from time domain symbol 0 to time domain symbol 4, respectively. The subcarriers occupied by the first resource on the first time domain symbol (i.e., time domain symbol 0) and the last time domain symbol (i.e., time domain symbol 4) are the same. As shown in Figure 7A, the subcarriers occupied by the first resource on time domain symbol 0 and time domain symbol 4 are all subcarrier 0, subcarrier 4, subcarrier 8, subcarrier 12, subcarrier 16, and subcarrier 20. Furthermore, time domain symbol 1 is further used as an AGC symbol.

[0150] For example, as shown in FIG. 7B, the first resource occupies five time domain symbols, from time domain symbol 0 to time domain symbol 4, respectively. The subcarriers occupied by the first resource on the first time domain symbol (i.e., time domain symbol 0) and the penultimate time domain symbol (i.e., time domain symbol 3) are the same. As shown in FIG. 7B, time domain symbol 0 and time domain symbol 4 3 The subcarriers occupied by the above first resource are all subcarrier 0, subcarrier 4, subcarrier 8, subcarrier 12, subcarrier 16, and subcarrier 20. In addition, time-domain symbol 1 is further used as an AGC symbol.

[0151] Optionally, the first resource occupies 5, 7, 9, or 11 time domain symbols in the time domain.

[0152] For example, as shown in Figure 6B, the first resource occupies five consecutive time domain symbols in the time domain. In the example shown in Figure 6B, in the SL positioning scenario, the communication system configures seven time domain symbols of one SL slot as available. Specifically, the time domain symbols shown in Figure 6B 0 to time domain symbols6 are used. Time domain symbol 0 is the AGC symbol, time domain symbol 1 to time domain symbol 5 are five consecutive time domain symbols occupied by the first resource, and time domain symbol 6 is the GAP symbol.

[0153] For example, as shown in FIG. 8A or 8B, the first resource occupies five consecutive time domain symbols in the time domain. In the example shown in FIG. 8A, in an SL positioning scenario, the communication system configures nine time domain symbols of one SL slot as available. In a possible implementation, as shown in FIG. 8A, time domain symbol 0 is an AGC symbol, and time domain symbol 1 to time domain symbol 5 are five consecutive time domain symbols occupied by the first resource. Time domain symbol 6 is a GAP symbol. Time domain symbol 7 and time domain symbol 8 are left blank. In another possible implementation, as shown in FIG. 8B, time domain symbol 0 and time domain symbol 8 are left blank, time domain symbol 1 is an AGC symbol, time domain symbol 2 to time domain symbol 6 are five consecutive time domain symbols occupied by the first resource, and time domain symbol 7 is a GAP symbol.

[0154] For example, as shown in Figure 8C, the first resource occupies seven consecutive time domain symbols in the time domain. In the example shown in Figure 8C, in an SL positioning scenario, the communication system configures nine time domain symbols of one SL slot as available. As shown in Figure 8C, time domain symbol 0 is an AGC symbol, time domain symbol 1 to time domain symbol 7 are the seven consecutive time domain symbols occupied by the first resource, and time domain symbol 8 is a GAP symbol.

[0155] It may be learned that the comb value corresponding to the first resource and the time domain symbol occupied by the first resource are related to the number of available time domain symbols in one slot. The location of the first resource may be configured in one time domain symbol to achieve more flexible configuration. When the first resource occupies a large number of time domain symbols, the comb value corresponding to the first resource may be set to a large value to help increase the multiplexing capacity of one slot. For example, as shown in Figures 10A and 10B, if the comb value corresponding to the first resource is 4, the frequency domain resource occupied by time domain symbol 1 to time domain symbol 5 of the slot may be multiplexed by four RSUs, resulting in improved multiplexing capacity.

[0156] Optionally, in the subcarriers occupied by the first resource in any one of the at least two time domain symbols, there is an equal frequency domain spacing between any two adjacent subcarriers.

[0157] For example, as shown in FIG. 6B, the first resource occupies subcarrier 0, subcarrier 4, subcarrier 8, subcarrier 12, subcarrier 16, and subcarrier 20 on time-domain symbol 1. Subcarrier 0 is adjacent to subcarrier 4, which is adjacent to subcarrier 8. There are three subcarriers between subcarrier 0 and subcarrier 4, and there are also three subcarriers between subcarrier 4 and subcarrier 8. This is also applicable to any other two adjacent subcarriers. It can be learned that any two adjacent subcarriers are spaced apart by an equal number of subcarriers.

[0158] The comb values ​​corresponding to the first resource are described below.

[0159] For example, as shown in FIG. 6B, the first resource occupies subcarrier 0, subcarrier 4, subcarrier 8, subcarrier 12, subcarrier 16, and subcarrier 20 on time-domain symbol 1. Subcarrier 0 is adjacent to subcarrier 4, which is adjacent to subcarrier 8. Similarly, subcarrier 16 is adjacent to subcarrier 20. There are three subcarriers between subcarrier 0 and subcarrier 4, and there are three subcarriers between subcarrier 4 and subcarrier 8. Similarly, there are three subcarriers between subcarrier 16 and subcarrier 20. This also applies to subcarriers adjacent to the subcarrier occupied by the first resource on another time-domain symbol. It can be learned that the comb value corresponding to the first resource is 4. Similarly, as shown in FIG. 8C, for example, the comb value corresponding to the first resource is 6.

[0160] In this implementation, there is an equal frequency-domain spacing between any two adjacent subcarriers of the first resource on the same time-domain symbol. This helps implement multi-user multiplexing of time-frequency resources and improve the multiplexing capacity of a slot. For details, see the related description below of the relationship between the positions of the first resource and the second resource.

[0161] In the following, several possible implementations of the first resource are described.

[0162] 1. The number of time domain symbols occupied by the first resource in the time domain is one greater than the comb value corresponding to the first resource.

[0163] For example, as shown in Figure 6B, the first resource occupies 5 time-domain symbols in the time domain, and the comb value corresponding to the first resource is 4. It can be learned that the number of time-domain symbols is 1 greater than the comb value corresponding to the first resource, which helps the first communication device to configure the first resource to occupy the same frequency-domain resource on the first time-domain symbol and the second time-domain symbol.

[0164] 2. A first resource occupies Y time-domain symbols in the time domain, and the comb value corresponding to the first resource is X; Y is equal to an integer multiple of X plus 1 .

[0165] Both X and Y are integers greater than or equal to 1.

[0166] For example, as shown in Figure 8C, the first resource occupies 7 time-domain symbols in the time domain, and the comb value corresponding to the first resource is 6. It can be learned that the number of time-domain symbols is 1 greater than the comb value corresponding to the first resource.

[0167] For example, as shown in Figure 8D, the first resource occupies 9 time-domain symbols in the time domain, and the comb value corresponding to the first resource is 4. It can be learned that the number of time-domain symbols is 2 times the comb value corresponding to the first resource plus 1.

[0168] 3. The first resource occupies Y time-domain symbols in the time domain, and the comb value corresponding to the first resource is X, where X is less than Y and Y is not an integer multiple of X. Both X and Y are integers greater than or equal to 1.

[0169] For example, as shown in Figure 8D, the first resource occupies 9 time-domain symbols in the time domain, and the comb value corresponding to the first resource is 4. It can be learned that the number of time-domain symbols is greater than the comb value corresponding to the first resource, and the number of time-domain symbols is not an integer multiple of the comb value corresponding to the first resource.

[0170] In a possible implementation, the at least two time domain symbols further include a third time domain symbol, and the first resource occupies the same frequency domain resource on the third time domain symbol and the first time domain symbol.

[0171] For example, as shown in FIG. 9A, the first resource occupies time domain symbol 1 through time domain symbol 5. The first time domain symbol is the first time domain symbol occupied by the first resource (i.e., time domain symbol 1). The second time domain symbol is the last time domain symbol occupied by the first resource (i.e., time domain symbol 5). The third time domain symbol is the third time domain symbol occupied by the first resource (i.e., time domain symbol 3). It can be learned from FIG. 9A that the first resource occupies the same subcarriers on time domain symbol 1, time domain symbol 3, and time domain symbol 5.

[0172] It should be noted that in the present application, in the time domain symbol occupied by the first resource, the same frequency domain resource is occupied on at least two time domain symbols. The above uses the first time domain symbol, the second time domain symbol, and the third time domain symbol as examples to describe the technical solution of the present application, and does not constitute a limitation on the present application.

[0173] In this implementation, it can be learned that the first resource occupies the same frequency domain resource over three time domain symbols, so that the second communication device can accurately determine the Doppler shift between the first communication device and the second communication device.

[0174] In another possible implementation, the at least two time domain symbols further include a fourth time domain symbol and a fifth time domain symbol, and the first resource occupies the same frequency domain resource on the fourth time domain symbol and the fifth time domain symbol.

[0175] For example, as shown in FIG. 9B, the first resource occupies time domain symbol 1 through time domain symbol 7. The first time domain symbol is the first time domain symbol occupied by the first resource (i.e., time domain symbol 1). The second time domain symbol is the last time domain symbol occupied by the first resource (i.e., time domain symbol 7). The fourth time domain symbol is the second time domain symbol occupied by the first resource (i.e., time domain symbol 2), and the fifth time domain symbol is the penultimate time domain symbol occupied by the first resource (i.e., time domain symbol 6). From FIG. 9B, it can be learned that the first resource occupies the same subcarriers on time domain symbol 1 and time domain symbol 7. The first resource occupies the same subcarriers on time domain symbol 2 and time domain symbol 6.

[0176] In this implementation, it can be learned that the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol, and the first resource occupies the same frequency domain resource on the fourth time domain symbol and the fifth time domain symbol, which helps the second communication device to accurately determine the Doppler shift between the first communication device and the second communication device.

[0177] Optionally, the first time-frequency unit further includes a second resource, the second resource being used to transmit a second positioning reference signal of the fifth communication device, the second resource occupying at least two time-domain symbols, the at least two time-domain symbols including a sixth time-domain symbol and a seventh time-domain symbol, and the second resource occupying the same frequency-domain resource on the sixth time-domain symbol and the seventh time-domain symbol.

[0178] 10A and 10B, the first communication device is RSU 1 and the fifth communication device is RSU 2. The first resource occupies time domain symbol 1 to time domain symbol 5, the sixth time domain symbol is time domain symbol 1, and the seventh time domain symbol is time domain symbol 5. The second resource occupies the same subcarriers on time domain symbol 1 and time domain symbol 5.

[0179] Optionally, the sixth time domain symbol is the first time domain symbol occupied by the second resource, and the seventh time domain symbol is the last time domain symbol or the penultimate time domain symbol occupied by the second resource.

[0180] Optionally, the sixth time domain symbol is an AGC symbol, and the sixth time domain symbol and the seventh time domain symbol are discontinuous.

[0181] The sixth and seventh time-domain symbols are similar to the first and second time-domain symbols, see the related description of the first and second time-domain symbols of the first resource for details.

[0182] Optionally, the at least two time domain symbols occupied by the second resource further include an eighth time domain symbol, where the second resource occupies the same frequency domain resource on the sixth time domain symbol and the eighth time domain symbol. The eighth time domain symbol is similar to the third time domain symbol. For details, please refer to the related description of the third time domain symbol occupied by the first resource.

[0183] Optionally, the at least two time domain symbols occupied by the second resource further include a ninth time domain symbol and a tenth time domain symbol. The second resource occupies the same frequency domain resource on the ninth time domain symbol and the tenth time domain symbol. The ninth time domain symbol and the tenth time domain symbol are similar to the fourth time domain symbol and the fifth time domain symbol. For details, please refer to the related description of the ninth time domain symbol and the tenth time domain symbol.

[0184] For the relationship between the number of time domain symbols occupied by the second resource and the comb value corresponding to the second resource, please refer to the related description of the first resource, and the details will not be described again in this specification.

[0185] In the following, several possible implementations of the time-frequency positions occupied by the first resource and the second resource are described.

[0186] Embodiment 1: The first resource and the second resource occupy the same frequency domain resource, and the frequency domain resource occupied by the first resource and the second resource on the same time domain symbol may satisfy a frequency division multiplexing relationship.

[0187] For example, as shown in Figures 10A and 10B, the first communication device is RSU 1, the second communication device is a terminal device, and the fifth communication device is RSU 2. For example, RSU 1 shown in Figures 10A and 10B transmits a first positioning reference signal using a first resource. RSU 2 transmits a second positioning reference signal using a second resource. From Figures 10A and 10B, it can be learned that both the first resource and the second resource occupy time domain symbol 1 to time domain symbol 5 in the time domain, and the first resource and the second resource occupy different subcarriers on the same time domain symbol of these time domain symbols. In other words, the subcarriers occupied by the first resource and the second resource on the same time domain symbol satisfy a frequency division multiplexing relationship.

[0188] Optionally, in the process of positioning a terminal device, precise positioning may be further performed by referring to first positioning reference signals transmitted by more RSUs. As shown in Figures 10A and 10B, RSU 3 uses the third resource to transmit the third positioning reference signal, and RSU 4 uses the fourth resource to transmit the fourth positioning reference signal. From Figures 10A and 10B, it can be learned that the first resource, the second resource, the third resource, and the fourth resource all occupy time domain symbol 1 to time domain symbol 5 in the time domain. On the same time domain symbol of these time domain symbols, the first resource, the second resource, the third resource, and the fourth resource occupy different subcarriers. In other words, the subcarriers occupied by the first resource, the second resource, the third resource, and the fourth resource on the same time domain symbol satisfy a frequency division multiplexing relationship. This solves the problem that it is difficult to implement multi-user multiplexing in a sidelink communication system when users are scheduled on a slot-by-slot basis.

[0189] 10A and 10B, it can be learned that the frequency domain offsets (i.e., the number of subcarriers offset relative to subcarrier 0) for time domain symbol 5 corresponding to the first resource on time domain symbol 1 are 0, 2, 1, 3, and 0, respectively. The frequency domain offsets for the second resource on time domain symbol 2 through time domain symbol 6 are 2, 1, 3, 0, and 2, respectively. The frequency domain offsets for the third resource on time domain symbol 2 through time domain symbol 6 are 1, 3, 0, 2, and 1, respectively. The frequency domain offsets for the fourth resource on time domain symbol 2 through time domain symbol 6 are 3, 0, 2, 1, and 3, respectively. Different RSUs use different frequency domain offsets to implement resource orthogonality in the frequency domain to improve the multiplexing capacity of multiple users in a slot. In this way, multiple RSUs multiplex the same slot to avoid the impact of clock drift on positioning accuracy for different RSUs.

[0190] For example, as shown in FIG. 11 , the first communication device is RSU 1 and the fifth communication device is RSU 2. For example, RSU 1 shown in FIG. 11 transmits a first positioning reference signal using a first resource. RSU 2 transmits a second positioning reference signal using a second resource. From FIG. 11 , it can be learned that both the first resource and the second resource occupy time domain symbol 1 to time domain symbol 5 in the time domain, and the first resource and the second resource occupy different subcarriers on the same time domain symbol of these time domain symbols. For example, as shown in FIG. 11 , the first resource occupies subcarrier 0, subcarrier 4, and subcarrier 8 on time domain symbol 1. However, the second resource occupies subcarrier 14, subcarrier 18, and subcarrier 22 on time domain symbol 1. This also applies to other time domain symbols. In other words, the subcarriers occupied by the first resource and the second resource on the same time-domain symbol satisfy a frequency-division multiplexing relationship. For example, in a positioning method based on the angle of arrival or angle of departure of the first positioning reference signal, angle measurement does not require the first positioning reference signal to occupy a large bandwidth, meaning that the accuracy of the angle measurement is not affected. Therefore, the first resource and the second resource can separately occupy bandwidth portions of the resource pool bandwidth. In this way, resource utilization is improved. This solves the problem of the difficulty of implementing multi-user multiplexing in sidelink communication systems when users are scheduled on a slot-by-slot basis.

[0191] The above solution is applicable to scenarios where the number of time domain symbols occupied by the system resources is less than 14. For example, in a sidelink communication system, the number of time domain symbols occupied by one SL slot is less than 14.

[0192] Implementation 2: The first resource and the second resource occupy different time domain resources.

[0193] For example, as shown in FIG. 12A, the first resource occupies time domain symbol 1 through time domain symbol 3, and the second resource occupies time domain symbol 6 through time domain symbol 8.

[0194] For example, as shown in Figure 12B, the first resource occupies time domain symbol 1 through time domain symbol 5. The second resource occupies time domain symbol 8 through time domain symbol 12.

[0195] For example, as shown in Figure 12C, the first resource occupies time domain symbol 1 through time domain symbol 3. The second resource occupies time domain symbol 6 through time domain symbol 10.

[0196] In the above example, it can be learned that the first resource and the second resource occupy different time domain symbols, but the first resource and the second resource may occupy the same subcarrier in the frequency domain.

[0197] In the above example, the time-domain symbols included in the horizontal coordinate can be understood as the time-domain symbols included in one slot. In other words, one slot is divided into smaller granularity resources. Through such resource division, multiplexing capability in the time domain can be additionally provided, interference between multiple users can be avoided, and positioning accuracy can be improved. Different users occupy different time-domain resources, thereby implementing the multiplexing capability of multiple users in a single slot in the time domain. This solves the problem of the difficulty of implementing multi-user multiplexing in a sidelink communication system when users are scheduled on a slot-by-slot basis.

[0198] Optionally, the number of time domain symbols occupied by the first resource and the second resource may be the same or different, which is not specifically limited in this application.

[0199] For example, as shown in FIG. 12A, the first resource and the second resource each occupy three time domain symbols, in other words, the first resource and the second resource each occupy the same number of time domain symbols.

[0200] For example, as shown in Figure 12C, the first resource occupies three time domain symbols, and the second resource occupies five time domain symbols. In other words, the first resource and the second resource each have: Different numbers Occupies a time domain symbol.

[0201] Optionally, the comb values ​​corresponding to the first resource and the comb values ​​corresponding to the second resource may be the same or different, which is not specifically limited in this application.

[0202] For example, as shown in Figure 12A, the comb value corresponding to the first resource and the comb value corresponding to the second resource are both 2. In other words, the first resource and the second resource each correspond to the same comb value.

[0203] For example, as shown in Figure 12C, the comb value corresponding to the first resource is 2, and the comb value corresponding to the second resource is 4. In other words, the first resource and the second resource each correspond to a different comb value.

[0204] Optionally, the bandwidth occupied by the first resource in the frequency domain is a resource pool bandwidth. For example, in a SL communication system, one bandwidth part (BWP) includes at least one resource pool bandwidth, and the bandwidth occupied by the first resource in the frequency domain may be one of the resource pool bandwidths.

[0205] For example, as shown in Figure 6B, the resource pool bandwidth includes the frequency domain bandwidth between subcarrier 0 and subcarrier 23. The bandwidth occupied by the first resource in the frequency domain may be understood as the resource pool bandwidth.

[0206] Optionally, the first resource occupies a part of the resource pool bandwidth in the frequency domain, and the second resource occupies another part of the resource pool bandwidth in the frequency domain.

[0207] For example, as shown in Figure 11, the resource pool bandwidth includes the frequency domain bandwidth between subcarrier 0 and subcarrier 23. The bandwidth occupied by the first resource in the frequency domain may be understood as half of the resource pool bandwidth, and the bandwidth occupied by the second resource in the frequency domain may be understood as the other half of the resource pool bandwidth.

[0208] Optionally, the first resource may be determined by the first communication device or configured by the fourth communication device for the first communication device, which is not specifically limited in this application.

[0209] For example, a first communication device configures a first resource such that the first resource occupies the same frequency domain resource on a first time domain symbol and a second time domain symbol.

[0210] For example, the first communication device may be a base station, the second communication device may be a terminal device, and the base station may configure the first resource. Optionally, the base station may further transmit the associated configuration of the first resource to the terminal device. In this way, the terminal device receives the first positioning reference signal transmitted by the base station on the first resource.

[0211] When the fourth communication device configures the first resource for the first communication device, the fourth communication device configures the first resource for the first communication device in the following two possible implementations, such that the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol, which may also be applied to other implementations, which are not specifically limited in this application.

[0212] In the following, embodiment 1 will be described with reference to step 501a.

[0213] Optionally, the embodiment shown in Figure 5B further includes step 501a, which may be performed before step 501.

[0214] 501a: The fourth communication device transmits first configuration information to the first communication device, and in response, the first communication device receives the first configuration information from the fourth communication device.

[0215] The first configuration information is used to configure a first resource for a first communication device, where the first resource occupies Y time-domain symbols in the time domain. A comb value corresponding to the first resource is X. Y is equal to X plus 1, or Y is equal to an integer multiple of X plus 1, or X is less than Y and Y is not an integer multiple of X.

[0216] For some possible relationships between the number of time domain symbols occupied by the first resource and the comb value corresponding to the first resource, please refer to the related description, and the details will not be described again in this specification.

[0217] Optionally, the first communication device is a terminal device and the second communication device is a base station. The second communication device and the fourth communication device may be the same communication device.

[0218] In this implementation, the fourth communication device uses the first configuration information to indicate the number of time-domain symbols occupied by the first resource and the comb value corresponding to the first resource, and the fourth communication device uses several possible relationships between the number of time-domain symbols and the comb value to indirectly indicate that the first resource should occupy the same frequency-domain resource on the first time-domain symbol and the second time-domain symbol.

[0219] For example, the fourth communication device indicates to the first communication device that the number of time domain symbols occupied by the first resource is 5, and the comb value corresponding to the first resource is 4. In this way, the first communication device can determine the first resource, and the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol.

[0220] Optionally, the first configuration information further includes at least one of a frequency domain offset corresponding to each of the time domain symbols occupied by the first resource, a position of a starting time domain symbol of the time domain symbols occupied by the first resource, and a position of an ending time domain symbol of the time domain symbols occupied by the first resource.

[0221] Based on the aforementioned step 501a, optionally, the aforementioned step 501 specifically includes:

[0222] The first communication device determines a first resource based on the first configuration information.

[0223] For example, the number of time domain symbols occupied by the first resource is 5, and the corresponding comb value is 4. The starting time domain symbol occupied by the first resource is time domain symbol 2 of the slot, and the ending time domain symbol occupied by the first resource is time domain symbol 6 of the slot. The frequency domain offsets corresponding to time domain symbol 2 relative to time domain symbol 6 occupied by the first resource are 0, 2, 1, 3, and 0. Thus, the first resource may include the time-frequency resources represented by the shaded portions shown in FIG. 6B.

[0224] In the following, embodiment 1 will be described with reference to step 501b.

[0225] Optionally, the embodiment shown in Figure 5B further includes step 501b, which may be performed before step 501.

[0226] 501b: The fourth communication device transmits first instruction information to the first communication device, and in response, the first communication device receives the first instruction information from the fourth communication device.

[0227] The first indication indicates that the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol.

[0228] Based on the aforementioned step 501b, optionally, the aforementioned step 501 specifically includes:

[0229] The first communication device determines a first resource based on the first indication information.

[0230] For example, as shown in Figure 13, the fourth communication device configures a first resource for the first communication device, where the first resource occupies four time domain symbols and the comb value corresponding to the first resource is 4. Based on the first indication, the first communication device may configure the first time domain symbol and the last time domain symbol occupied by the first resource to occupy the same frequency domain resource. The first resource includes the time-frequency resource shown in the shaded portion of Figure 13.

[0231] It should be noted that in a solution where the first time-domain symbol is an AGC symbol and the first and second time-domain symbols are discontinuous, the first resource can be divided into two parts: one part is a resource used for AGC and the other part is a resource used to transmit the first positioning reference signal.

[0232] For example, the fourth communication device may configure resources used to transmit a first positioning reference signal for the first communication device. For example, the resources used to transmit the first positioning reference signal occupy four time-domain symbols of a slot, i.e., the second time-domain symbol through the fifth time-domain symbol (referred to herein as time-domain symbol 1 through time-domain symbol 4), respectively. The comb value corresponding to the resources used to transmit the first positioning reference signal is 4. However, the communication protocol may specify that the first time-domain symbol of the slot is used as an AGC symbol, and the frequency-domain resources occupied by the resources used for AGC on the AGC symbol are the same as the frequency-domain resources occupied by the last time-domain symbol or the penultimate time-domain symbol occupied by the first resources used to transmit the first positioning reference signal.

[0233] Optionally, the signal transmitted by the first communication device in the AGC symbol is a copy of the signal transmitted in the last or penultimate time domain symbol occupied by the first positioning reference signal transmitted by the first communication device.

[0234] 502: A first communication device transmits a first positioning reference signal to a second communication device on a first resource, and in response, the second communication device receives the first positioning reference signal transmitted by the first communication device on the first resource.

[0235] Optionally, the first communication device is an access network device and the second communication device is an access network device, in which case the first positioning reference signal may be a downlink positioning reference signal.

[0236] Optionally, the first communication device is an access network device and the second communication device is a terminal device, in which case the first positioning reference signal may be an uplink positioning reference signal.

[0237] Optionally, the first communication device is a first terminal device, the second communication device is a second terminal device, the first communication device is an RSU and the second communication device is a terminal device, or the first communication device is a terminal device and the second communication device is an RSU, in which case the first positioning reference signal may be a sidelink positioning reference signal (SL-PRS).

[0238] 503: The second communication device measures the first positioning reference signal and obtains a measurement result.

[0239] Optionally, the measurements include at least one of a time of arrival and an angle of arrival of the first positioning reference signal.

[0240] Specifically, the second communication device may measure the first positioning reference signal to obtain multipath parameters, such as the time and angle at which the first positioning reference signal arrives at the second communication device. The second communication device may measure the first positioning reference signal on a first time-domain symbol to obtain a first phase. The second communication device may measure the first positioning reference signal on a second time-domain symbol to obtain a second phase. The first communication device then determines a phase difference between the first and second phases and uses the phase difference to determine a Doppler shift between the first and second communication devices. The first communication device then compensates for the multipath parameters using the Doppler shift. In other words, the measurement results include the multipath parameters, and the multipath parameters are compensated for using the Doppler shift. Alternatively, the measurement results include the multipath parameters and the Doppler shift, and the multipath parameters are not compensated for using the Doppler shift.

[0241] Optionally, the at least one time domain symbol further includes a third time domain symbol, and the first resource occupies the same frequency domain resource on the third time domain symbol and the first time domain symbol.

[0242] Specifically, the second communication device may measure the first positioning reference signal on the third time domain symbol to obtain a third phase, and the second communication device may use the first phase, the second phase, and the third phase to comprehensively determine a Doppler shift 1 between the first communication device and the second communication device.

[0243] Optionally, the at least one time domain symbol further includes a fourth time domain symbol and a fifth time domain symbol, and the first resource occupies the same frequency domain resource on the fourth time domain symbol and the fifth time domain symbol.

[0244] Specifically, the second communication device may measure the first positioning reference signal on the first time-domain symbol to obtain a first phase. The second communication device may measure the first positioning reference signal on the second time-domain symbol to obtain a second phase. The first communication device then determines a phase difference between the first phase and the second phase and uses the phase difference to determine Doppler shift 1 between the first communication device and the second communication device. The second communication device may measure the first positioning reference signal on the fourth time-domain symbol to obtain a fourth phase. The second communication device may measure the first positioning reference signal on the fifth time-domain symbol to obtain a fifth phase. The second communication device then determines a phase difference between the fourth phase and the fifth phase and uses the phase difference to determine Doppler shift 2 between the first communication device and the second communication device. The second communication device may refer to Doppler shift 1 and Doppler shift 2 to ultimately determine the Doppler shift between the first communication device and the second communication device.

[0245] Optionally, after the second communication device determines the measurement result, the second communication device may implement the following two possible solutions, which will be described separately below.

[0246] In the following, with reference to step 504, a first possible solution will be described.

[0247] Optionally, the embodiment shown in FIG. 5B further includes step 504, which may be performed after step 503.

[0248] 504: The second communication device locates the first communication device or the second communication device based on the measurement result.

[0249] For example, the measurement results include multipath parameters obtained through Doppler shift compensation. As shown in Figure 2, the first communication device is a terminal device 201, and the second terminal device is a terminal device 202. The terminal device 202 may use the multipath parameters to locate the terminal device 201 or the terminal device 202.

[0250] For example, the measurement results include multipath parameters obtained through Doppler shift compensation. As shown in Figure 3, the first communication device is an RSU 302, and the second communication device is a terminal device 301. The terminal device 301 may receive measurement results corresponding to the RSU 302, the RSU 303, and the RSU 304, respectively. The terminal device 301 then combines these multipath parameters to locate the terminal device 301.

[0251] In the following, a second possible solution will be described with reference to steps 505 and 506.

[0252] Optionally, the embodiment shown in FIG. 5B further includes step 505 and step 506. Step 505 and step 506 may be performed after step 503.

[0253] 505: The second communication device transmits the measurement result to the third communication device, and in response, the third communication device receives the measurement result from the second communication device.

[0254] For example, as shown in Figure 1, the first communication device is a terminal device 101, the second communication device is an access network device 102, and the third communication device is an LMF 104. The access network device 102 transmits measurement results to the LMF 104 via the LMF 103. In this way, the LMF 104 can locate the terminal device 101.

[0255] 4, the first communication device is a terminal device 402, the second communication device is a terminal device 401, and the third communication device is an LMF 404. The terminal device 401 transmits measurement results to the LMF 404 via an access network device 403. In this way, the LMF 404 can locate the terminal device 402 or the terminal device 401.

[0256] 506: The third communication device locates the first communication device or the second communication device based on the measurement results.

[0257] For example, the measurement results may include uncompensated multipath parameters and a Doppler shift, and the third communication device may use the Doppler shift to compensate for the multipath parameters. The third communication device then uses the compensated multipath parameters to locate the first communication device or the second communication device.

[0258] For example, as shown in Figure 1, the first communication device is terminal device 101, the second communication device is access network device 102, and the third communication device is LMF 104. Access network device 102 transmits measurement results to LMF 104 via LMF 103. LMF 104 compensates for the multipath parameters using Doppler shift. The third communication device then uses the compensated multipath parameters to position terminal device 101.

[0259] In this embodiment of the present application, a first communication device determines a first resource. The first resource is used to transmit a first positioning reference signal, the first resource occupying at least two time-domain symbols, the at least two time-domain symbols being located in the same slot, the at least two time-domain symbols including a first time-domain symbol and a second time-domain symbol, and the first resource occupying the same frequency-domain resource on the first time-domain symbol and the second time-domain symbol. The first communication device transmits the first positioning reference signal to a second communication device on the first resource. It can be learned that the first resource occupies the same frequency-domain resource on the first time-domain symbol and the second time-domain symbol. This helps the second communication device perform accurate positioning on the first communication device or the second communication device and improves positioning accuracy. For example, Doppler shift between devices introduces continuous phase changes in the time domain. Therefore, the second communication device can accurately estimate the Doppler shift between the first communication device and the second communication device by using the phase difference between the phase obtained by measuring the first positioning reference signal on the first time-domain symbol and the phase obtained by measuring the first positioning reference signal on the second time-domain symbol. This improves Doppler shift estimation performance. In this way, the second communication device can compensate for some multipath parameters obtained through measurement based on the Doppler shift, and then perform accurate positioning on the first communication device or the second communication device using the compensated multipath parameters. This improves positioning accuracy and positioning performance.

[0260] In the above example, except for the example where the first time-domain symbol is the AGC symbol, the location of the AGC symbol is merely an example and does not constitute a limitation on the present application. The location of the GAP symbol in the above example is also merely an example and does not constitute a limitation on the present application.

[0261] The following describes a first communication device provided in an embodiment of the present application. Figure 14 is a structural diagram of a first communication device according to an embodiment of the present application. The first communication device may be configured to perform the steps performed by the first communication device in the embodiment shown in Figure 5B. For details, please refer to the related descriptions in the above method embodiment.

[0262] The first communication device 1400 includes a transceiver module 1401 and a processing module 1402 .

[0263] The transceiver module 1401 may implement corresponding communication functions. The transceiver module 1401 may also be referred to as a communication interface or a communication unit. The processing module 1402 is configured to perform processing operations.

[0264] Optionally, the first communications device 1400 may further include a storage module. The storage module may be configured to store instructions and / or data. The processing module 1402 may read the instructions and / or data from the storage module such that the communications device performs the method embodiment shown in FIG. 5B.

[0265] The first communication device 1400 may be configured to perform the actions performed by the first communication device in the aforementioned method embodiments. The first communication device 1400 may be the first communication device or a component that may be disposed in the first communication device. The transceiver module 1401 is configured to perform reception-related operations on the first communication device side in the aforementioned method embodiments, and the processing module 1402 is configured to perform processing-related operations on the first communication device side in the aforementioned method embodiments.

[0266] Optionally, the transceiver module 1401 may include a transmitting module and a receiving module. The transmitting module is configured to perform the transmitting operation of the first communication device in the aforementioned method embodiment shown in Figure 5B. The receiving module is configured to perform the receiving operation of the first communication device in the aforementioned method embodiment shown in Figure 5B.

[0267] It should be noted that the first communication device 1400 may include a transmitting module but may not include a receiving module. Alternatively, the first communication device 1400 may include a receiving module but may not include a transmitting module. This may be specifically determined depending on whether the aforementioned solution performed by the first communication device 1400 includes a transmitting action and a receiving action.

[0268] In a possible implementation, the first communication device 1400 may implement the following solution.

[0269] The processing module 1402 is configured to determine a first resource, the first resource being used to transmit a first positioning reference signal, the first resource occupying at least two time domain symbols, the at least two time domain symbols being located in the same slot, the at least two time domain symbols including a first time domain symbol and a second time domain symbol, and the first resource occupying the same frequency domain resource on the first time domain symbol and the second time domain symbol.

[0270] The transceiver module 1401 is configured to transmit a first positioning reference signal to a second communication device on a first resource.

[0271] In possible implementations, the first time-frequency unit occupies one slot in the time domain, half a slot, or a portion of a time-domain symbol of one slot.

[0272] In another possible implementation, the first time domain symbol is the first time domain symbol occupied by the first resource, and the second time domain symbol is the last or penultimate time domain symbol occupied by the first resource.

[0273] In another possible implementation, the first time domain symbol is an AGC symbol, and the first time domain symbol and the second time domain symbol are non-consecutive.

[0274] In another possible implementation, the first resource occupies 5, 7, 9, or 11 time domain symbols in the time domain.

[0275] In another possible implementation, the number of time domain symbols occupied by the first resource in the time domain is one more than the comb value corresponding to the first resource.

[0276] In another possible implementation, the first resource occupies Y time-domain symbols in the time domain, and the comb value corresponding to the first resource is X; Y is equal to an integer multiple of X plus 1 .

[0277] In another possible implementation, the first resource occupies Y time-domain symbols in the time domain, and the comb value corresponding to the first resource is X, where X is less than Y and Y is not an integer multiple of X.

[0278] In another possible implementation, the at least two time domain symbols further include a third time domain symbol, and the first resource occupies the same frequency domain resource on the third time domain symbol and the first time domain symbol.

[0279] In another possible implementation, the at least two time domain symbols further include a fourth time domain symbol and a fifth time domain symbol, and the first resource occupies the same frequency domain resource on the fourth time domain symbol and the fifth time domain symbol.

[0280] In another possible implementation, there is an equal frequency domain spacing between any two adjacent subcarriers in the subcarriers occupied by the first resource in any one of the at least two time domain symbols.

[0281] In another possible implementation, the bandwidth occupied by the first resource in the frequency domain is a resource pool bandwidth.

[0282] In another possible implementation, the transceiver module 1401 includes: and further configured to receive first configuration information from the fourth communication device, the first configuration information being used to configure a first resource, where the first resource occupies Y time-domain symbols in the time domain, and a comb value corresponding to the first resource is X, where Y is equal to X plus 1, or Y is equal to an integer multiple of X plus 1, or X is smaller than Y and Y is not an integer multiple of X.

[0283] The processing module 1402 It is particularly configured to determine the first resource based on the first configuration information.

[0284] In another possible implementation, the transceiver module 1401 includes: and further configured to receive first indication information from the fourth communication device, the first indication information indicating that the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol.

[0285] The processing module 1402 It is particularly configured to determine the first resource based on the first indication information.

[0286] In another possible implementation, the first time-frequency unit further includes a second resource, the second resource being used to transmit a second positioning reference signal of the fifth communication device, the second resource occupying at least two time-domain symbols, the at least two time-domain symbols including a sixth time-domain symbol and a seventh time-domain symbol, and the second resource occupying the same frequency-domain resource on the sixth time-domain symbol and the seventh time-domain symbol.

[0287] The first resource and the second resource may occupy the same time domain resource, and the frequency domain resource occupied by the first resource and the second resource on the same time domain symbol may satisfy a frequency division multiplexing relationship. Alternatively, the first resource and the second resource may occupy different time domain resources.

[0288] The following describes a second communication device provided in an embodiment of the present application. Figure 15 is a structural diagram of a second communication device according to an embodiment of the present application. The second communication device may be configured to perform the steps performed by the second communication device in the embodiment shown in Figure 5B. For details, please refer to the related descriptions in the above method embodiment.

[0289] The second communication device 1500 includes a transceiver module 1501 and a processing module 1502 .

[0290] The transceiver module 1501 may implement corresponding communication functions. The transceiver module 1501 may also be referred to as a communication interface or a communication unit. The processing module 1502 is configured to perform processing operations.

[0291] Optionally, the second communications device 1500 may further include a storage module. The storage module may be configured to store instructions and / or data. The processing module 1502 may read the instructions and / or data from the storage module such that the communications device performs the method embodiment shown in FIG. 5B.

[0292] The second communication device 1500 may be configured to perform the actions performed by the second communication device in the aforementioned method embodiments. The second communication device 1500 may be the second communication device or a component that may be disposed in the second communication device. The transceiver module 1501 is configured to perform reception-related operations on the second communication device side in the aforementioned method embodiments, and the processing module 1502 is configured to perform processing-related operations on the second communication device side in the aforementioned method embodiments.

[0293] Optionally, the transceiver module 1501 may include a transmitting module and a receiving module. The transmitting module is configured to perform a transmitting operation of the second communication device in the aforementioned method embodiment shown in Figure 5B. The receiving module is configured to perform a receiving operation of the second communication device in the aforementioned method embodiment shown in Figure 5B.

[0294] It should be noted that the second communication device 1500 may include a transmitting module but may not include a receiving module. Alternatively, the second communication device 1500 may include a receiving module but may not include a transmitting module. This may be specifically determined depending on whether the aforementioned solution performed by the second communication device 1500 includes a transmitting action and a receiving action.

[0295] In a possible implementation, the second communication device 1500 may implement the following solution.

[0296] The transceiver module 1501 is configured to receive a first positioning reference signal transmitted by a first communication device on a first resource.

[0297] The first resource occupies at least two time domain symbols, the at least two time domain symbols are located in the same slot, the at least two time domain symbols include a first time domain symbol and a second time domain symbol, and the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol.

[0298] The processing module 1502 is configured to measure the first positioning reference signal to obtain a measurement result, and to position the first communication device or the second communication device 1500 based on the measurement result.

[0299] In another possible implementation, the second communication device 1500 may perform the following solution.

[0300] The transceiver module 1501 is configured to receive a first positioning reference signal transmitted by a first communication device on a first resource.

[0301] The first resource is located in a first time-frequency unit, the first resource occupies at least two time-domain symbols, the at least two time-domain symbols include a first time-domain symbol and a second time-domain symbol, and the first resource occupies the same frequency-domain resource on the first time-domain symbol and the second time-domain symbol.

[0302] The processing module 1502 is configured to measure a first positioning reference signal to obtain a measurement result.

[0303] The transceiver module 1501 is further configured to transmit the measurement results to a third communication device.

[0304] Optionally, the first time-frequency unit occupies one slot, half a slot, or a portion of a time-domain symbol of one slot in the time domain.

[0305] Optionally, the first time domain symbol is the first time domain symbol occupied by the first resource, and the second time domain symbol is the last time domain symbol or the penultimate time domain symbol occupied by the first resource.

[0306] Optionally, the first time domain symbol is an AGC symbol, and the first time domain symbol and the second time domain symbol are non-consecutive.

[0307] Optionally, the first resource occupies 5, 7, 9, or 11 time domain symbols in the time domain.

[0308] Optionally, the number of time domain symbols occupied by the first resource in the time domain is one greater than the comb value corresponding to the first resource.

[0309] Optionally, the first resource occupies Y time-domain symbols in the time domain, and a comb value corresponding to the first resource is X; and Y is equal to an integer multiple of X plus 1 .

[0310] Optionally, the first resource occupies Y time-domain symbols in the time domain, and a comb value corresponding to the first resource is X, where X is less than Y and Y is not an integer multiple of X.

[0311] Optionally, the at least two time domain symbols further include a third time domain symbol, and the first resource occupies the same frequency domain resource on the third time domain symbol and the first time domain symbol.

[0312] Optionally, the at least two time domain symbols further include a fourth time domain symbol and a fifth time domain symbol, and the first resource occupies the same frequency domain resource on the fourth time domain symbol and the fifth time domain symbol.

[0313] Optionally, in the subcarriers occupied by the first resource in any one of the at least two time domain symbols, there is an equal frequency domain spacing between any two adjacent subcarriers.

[0314] Optionally, the bandwidth occupied by the first resource in the frequency domain is a resource pool bandwidth.

[0315] Optionally, the first time-frequency unit further includes a second resource, where the second resource is used to transmit a second positioning reference signal of the fifth communication device, the second resource occupies at least two time domain symbols, the at least two time domain symbols include a sixth time domain symbol and a seventh time domain symbol, and the second resource occupies the same frequency domain resource on the sixth time domain symbol and the seventh time domain symbol.

[0316] The first resource and the second resource may occupy the same time domain resource, and the frequency domain resource occupied by the first resource and the second resource on the same time domain symbol may satisfy a frequency division multiplexing relationship. Alternatively, the first resource and the second resource may occupy different time domain resources.

[0317] The following describes a fourth communication device provided in an embodiment of the present application. Figure 16 is a structural diagram of the fourth communication device according to an embodiment of the present application. The fourth communication device may be configured to perform the steps performed by the fourth communication device in the embodiment shown in Figure 5B. For details, please refer to the related descriptions in the above method embodiment.

[0318] The fourth communication device 1600 includes a transceiver module 1601. Optionally, the fourth communication device 1600 further includes a processing module 1602.

[0319] The transceiver module 1601 may implement corresponding communication functions. The transceiver module 1601 may also be referred to as a communication interface or a communication unit. The processing module 1602 is configured to perform processing operations.

[0320] Optionally, the fourth communication device 1600 may further include a storage module. The storage module may be configured to store instructions and / or data. The processing module 1602 may read the instructions and / or data from the storage module such that the communication device performs the method embodiment shown in FIG. 5B.

[0321] The fourth communication device 1600 may be configured to perform the actions performed by the fourth communication device in the aforementioned method embodiments. The fourth communication device 1600 may be the fourth communication device or a component that may be disposed in the fourth communication device. The transceiver module 1601 is configured to perform reception-related operations at the fourth communication device side in the aforementioned method embodiments, and the processing module 1602 is configured to perform processing-related operations at the fourth communication device side in the aforementioned method embodiments.

[0322] Optionally, the transceiver module 1601 may include a transmitting module and a receiving module. The transmitting module is configured to perform a transmitting operation of the fourth communication device in the aforementioned method embodiment shown in Figure 5B. The receiving module is configured to perform a receiving operation of the fourth communication device in the aforementioned method embodiment shown in Figure 5B.

[0323] It should be noted that the fourth communication device 1600 may include a transmitting module but may not include a receiving module. Alternatively, the fourth communication device 1600 may include a receiving module but may not include a transmitting module. This may be specifically determined depending on whether the aforementioned solution performed by the fourth communication device 1600 includes a transmitting action and a receiving action.

[0324] In a possible implementation, the fourth communication device 1600 is configured to perform the following solution.

[0325] The transceiver module 1601 is configured to send first configuration information to a first communication device, the first configuration information being used to configure a first resource, where the first resource occupies Y time-domain symbols in the time domain, and a comb value corresponding to the first resource is X, where Y is equal to X plus 1, or Y is equal to an integer multiple of X plus 1, or X is smaller than Y and Y is not an integer multiple of X.

[0326] In another possible implementation form, the fourth communication device 1600 is configured to perform the following solution.

[0327] The transceiver module 1601 is configured to transmit first indication information to the first communication device, the first indication information indicating that the first resource occupies the same frequency domain resource on a first time domain symbol and a second time domain symbol, the first resource occupies at least two time domain symbols, the at least two time domain symbols are located in the same slot, and the first resource is used to transmit a first positioning reference signal of the first communication device.

[0328] FIG. 17 is a diagram of a possible configuration in which the communication device is a terminal device.

[0329] Fig. 17 is a diagram of a simplified structure of a terminal device. For ease of understanding and illustration, Fig. 17 uses an example of a mobile phone as the terminal device. As shown in Fig. 17, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input / output device.

[0330] The processor is primarily configured to process communication protocols and communication data, control terminal devices, execute software programs, process data of software programs, etc. The memory is primarily configured to store software programs and data.

[0331] The radio frequency circuitry is primarily configured to convert between baseband signals and radio frequency signals and process the radio frequency signals.

[0332] Antennas are primarily configured to receive and transmit radio frequency signals in the form of electromagnetic waves.

[0333] An input / output device, such as a touchscreen, a display, or a keyboard, is primarily configured to receive data input by a user and output data to a user.

[0334] It should be noted that some types of terminal devices may not have input / output devices.

[0335] When data needs to be transmitted, after performing baseband processing on the data to be transmitted, the processor outputs a baseband signal to the radio frequency circuit, which performs radio frequency processing on the baseband signal and then transmits the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is transmitted to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

[0336] For ease of explanation, FIG. 17 shows only one memory and one processor. In an actual terminal device product, there may be one or more processors and one or more memories. The memory may be referred to as a storage medium, a storage device, or the like. The memory may be located independently of the processor or integrated with the processor. This is not limited to the embodiments of the present application.

[0337] In this embodiment of the present application, the antenna and the radio frequency circuit having the transceiver function may be considered as a transceiver unit of the terminal device, and the processor having the processing function may be considered as a processing unit of the terminal device. As shown in Figure 17, the terminal device includes a transceiver unit 1710 and a processing unit 1720. The transceiver unit may also be called a transceiver, a transceiver machine, a transceiver device, etc. The processing unit may also be called a processor, a processing board, a processing module, a processing device, etc.

[0338] Optionally, components within the transceiver unit 1710 configured to perform receiving functions may be considered receiving units, and components within the transceiver unit 1710 configured to perform transmitting functions may be considered transmitting units. In other words, the transceiver unit 1710 includes a receiving unit and a transmitting unit. The transceiver unit may also be referred to as a transceiver machine, transceiver, transceiver circuitry, etc. The receiving unit may also be referred to as a receiver machine, receiver, receiving circuitry, etc. The transmitting unit may also be referred to as a transmitter machine, transmitter, transmitting circuitry, etc.

[0339] It should be understood that the transceiver unit 1710 is configured to perform transmitting and receiving operations of the first communication device or the second communication device in the aforementioned method embodiments, and the processing unit 1720 is configured to perform operations other than transmitting and receiving operations of the first communication device or the second communication device in the aforementioned method embodiments.

[0340] When the first communication device or the second communication device is a chip, the chip includes a transceiver unit and a processing unit. The transceiver unit may be an input / output circuit or a communication interface. The processing unit may be a processor, a microprocessor, an integrated circuit, or a logic circuit integrated on the chip.

[0341] The present application further provides a communication device. Figure 18 is a diagram of another structure of a communication device according to an embodiment of the present application. The communication device may be configured to perform the steps performed by the first communication device, the second communication device, or the fourth communication device in the embodiment shown in Figure 5. For details, please refer to the related descriptions in the above method embodiments.

[0342] The communication device includes a processor 1801. Optionally, the communication device further includes a memory 1802 and a transceiver 1803.

[0343] In a possible implementation, the processor 1801, memory 1802, and transceiver 1803 are individually connected through a bus, with the memory storing computer instructions.

[0344] Optionally, the processing module 1402 in the above-mentioned embodiment may specifically be the processor 1801 in this embodiment. Therefore, a specific implementation form of the processor 1801 will not be described again. The transceiver module 1401 in the above-mentioned embodiment may specifically be the transceiver 1803 in this embodiment. Therefore, a specific implementation form of the transceiver 1803 will not be described again.

[0345] Optionally, the processing module 1502 in the above-mentioned embodiment may specifically be the processor 1801 in this embodiment. Therefore, a specific implementation form of the processor 1801 will not be described again. The transceiver module 1501 in the above-mentioned embodiment may specifically be the transceiver 1803 in this embodiment. Therefore, a specific implementation form of the transceiver 1803 will not be described again.

[0346] Optionally, the processing module 1602 in the above-mentioned embodiment may specifically be the processor 1801 in this embodiment. Therefore, a specific implementation form of the processor 1801 will not be described again. The transceiver module 1601 in the above-mentioned embodiment may specifically be the transceiver 1803 in this embodiment. Therefore, a specific implementation form of the transceiver 1803 will not be described again.

[0347] An embodiment of the present application further provides a communication system, the communication system including a first communication device and a second communication device, the first communication device configured to perform all or part of the steps performed by the first communication device in the embodiment shown in Figure 5B, and the second communication device configured to perform all or part of the steps performed by the second communication device in the embodiment shown in Figure 5B.

[0348] Optionally, the communication system further includes a third communication device, the third communication device configured to perform all or part of the steps performed by the third communication device in the embodiment shown in Figure 5B.

[0349] Optionally, the communication system further includes a fourth communication device, the fourth communication device configured to perform all or part of the steps performed by the fourth communication device in the embodiment shown in Figure 5B.

[0350] An embodiment of the present application further provides a computer program product including instructions, which, when executed on a computer, enable the computer to perform the method of the embodiment shown in Figure 5B.

[0351] An embodiment of the present application further provides a computer-readable storage medium containing computer instructions, which, when executed on a computer, enable the computer to perform the method of the embodiment shown in Figure 5B.

[0352] An embodiment of the present application further provides a chip device including a processor connected to the memory and calling a program stored in the memory, such that the processor executes the method of the embodiment shown in FIG. 5B.

[0353] Any of the above processors may be a general-purpose central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to control program execution of the method of the embodiment shown in Figure 5B. Any of the above memories may be read-only memory (ROM), another type of static storage device capable of storing static information and instructions, random access memory (RAM), etc.

[0354] For the sake of convenience, those skilled in the art can clearly understand that the detailed operation processes of the aforementioned systems, devices and units may refer to the corresponding processes in the aforementioned method embodiments, and the details will not be described again in this specification.

[0355] In some embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the described device embodiments are merely examples. For example, the division into units is merely a logical division of function, and other divisions may be used in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented. In addition, interconnections, direct connections, or communication connections shown or described may be implemented using some interfaces. Indirect couplings or communication connections between devices or units may be implemented in electronic, mechanical, or other forms.

[0356] The units described as separate parts may or may not be physically separate, and the parts shown as units may or may not be physical units, and may be located in one location or distributed over multiple network units. Some or all of the units may be selected based on actual requirements to achieve the objectives of the solutions of the embodiments.

[0357] In addition, the functional units of the embodiments of the present application may be integrated into one processing unit, and each unit may exist physically alone, or two or more units may be integrated into one unit. The integrated unit may be implemented in the form of hardware or in the form of a software functional unit.

[0358] When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, the integrated unit may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may essentially be implemented in the form of a software product, or a portion of the technical solution may be implemented in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for instructing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method described in the embodiments of the present application. The aforementioned storage medium includes any medium capable of storing program code, such as a USB flash drive, a removable hard disk, a read-only memory (ROM), a RAM, a magnetic disk, or an optical disk.

[0359] The foregoing embodiments are intended to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail in connection with the foregoing embodiments, those skilled in the art should understand that, without departing from the spirit and scope of the technical solutions of the embodiments of the present application, further modifications may be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions may be made to some technical features of the foregoing embodiments. [Explanation of symbols]

[0360] 101,201,202,301,401,402 terminal devices 102,403 Access Network Devices 103 Access and Mobility Management Function AMF 104,404 Location Management Function (LMF) 302, 303, 304 Roadside Unit (RSU) 1400 First communication device 1401, 1501, 1601 Transceiver Modules 1402, 1502, 1602 Processing Module 1500 Second communication device 1600 Fourth Communication Device 1710 Transceiver Unit 1720 Processing Unit 1801 processor 1802 memory 1803 Transceiver

Claims

1. 1. A communication method comprising: determining, by a first communication device, a first resource used to transmit a first positioning reference signal, the first resource occupying at least two time domain symbols, the at least two time domain symbols being located in the same slot, the at least two time domain symbols including a first time domain symbol and a second time domain symbol, and the first resource occupying the same frequency domain resource on the first time domain symbol and the second time domain symbol; transmitting, by the first communication device, the first positioning reference signal to a second communication device on the first resource; A method comprising: The method, wherein the first time domain symbol is an automatic gain control (AGC) symbol, and the first time domain symbol and the second time domain symbol are non-contiguous.

2. 2. The method of claim 1, wherein the first resource occupies a first time-frequency unit, the first time-frequency unit occupying one slot in the time domain, half a slot, or a portion of a time-domain symbol in one slot.

3. 2. The method of claim 1, wherein the first time domain symbol is a first time domain symbol occupied by the first resource, and the second time domain symbol is a last or penultimate time domain symbol occupied by the first resource.

4. The method of claim 1 , wherein a number of time domain symbols occupied by the first resource in the time domain is one greater than a comb value corresponding to the first resource.

5. 2. The method of claim 1, wherein the first resource occupies Y time-domain symbols in the time domain, and a comb value corresponding to the first resource is X, where Y is equal to an integer multiple of X plus 1.

6. 2. The method of claim 1, wherein the first resource occupies Y time-domain symbols in the time domain, and a comb value corresponding to the first resource is X, where X is less than Y and Y is not an integer multiple of X.

7. 2. The method of claim 1, wherein the at least two time domain symbols further include a third time domain symbol, and the first resource occupies the same frequency domain resource on the third time domain symbol and the first time domain symbol.

8. 2. The method of claim 1, wherein the at least two time domain symbols further include a fourth time domain symbol and a fifth time domain symbol, and the first resource occupies the same frequency domain resource on the fourth time domain symbol and the fifth time domain symbol.

9. 2. The method of claim 1, wherein there is an equal frequency domain spacing between any two adjacent subcarriers occupied by the first resource on any one of the at least two time domain symbols.

10. The method of claim 1 , wherein a bandwidth occupied by the first resource in the frequency domain is a resource pool bandwidth.

11. receiving, by the first communication device, first configuration information from a fourth communication device, the first configuration information being used to configure the first resource, the first resource occupying Y time-domain symbols in the time domain, a comb value corresponding to the first resource being X, where Y is equal to X plus 1, or Y is equal to an integer multiple of X plus 1, or X is smaller than Y and Y is not an integer multiple of X; further comprising The step of determining, by the first communication device, a first resource, comprises: determining, by the first communication device, the first resource based on the first configuration information; 2. The method of claim 1, comprising:

12. receiving, by the first communication device, first indication information from a fourth communication device, the first indication information indicating that the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol; further comprising The step of determining, by the first communication device, a first resource, comprises: determining, by the first communication device, the first resource based on the first instruction information; 2. The method of claim 1, comprising:

13. 1. A communication method comprising: receiving, by a second communication device, a first positioning reference signal transmitted by a first communication device on a first resource, the first resource occupying at least two time domain symbols, the at least two time domain symbols being located in the same slot, the at least two time domain symbols including a first time domain symbol and a second time domain symbol, and the first resource occupying the same frequency domain resource on the first time domain symbol and the second time domain symbol; measuring the first positioning reference signal by the second communication device and obtaining a measurement result; locating, by the second communication device, the first communication device or the second communication device based on the measurement results, or transmitting, by the second communication device, the measurement results to a third communication device, wherein the measurement results are used by the third communication device to locate the first communication device or the second communication device; A method comprising: The method, wherein the first time domain symbol is an automatic gain control (AGC) symbol, and the first time domain symbol and the second time domain symbol are non-contiguous.

14. 14. The method of claim 13, wherein the first resource occupies a first time-frequency unit, the first time-frequency unit occupying one slot in the time domain, half a slot, or a portion of a time-domain symbol in one slot.

15. 14. The method of claim 13, wherein the first time domain symbol is a first time domain symbol occupied by the first resource, and the second time domain symbol is a last or penultimate time domain symbol occupied by the first resource.

16. The method of claim 13 , wherein a number of time domain symbols occupied by the first resource in the time domain is one greater than a comb value corresponding to the first resource.

17. 14. The method of claim 13, wherein the first resource occupies Y time-domain symbols in the time domain, and a comb value corresponding to the first resource is X, where Y is equal to an integer multiple of X plus 1.

18. 14. The method of claim 13, wherein the first resource occupies Y time-domain symbols in the time domain, and a comb value corresponding to the first resource is X, where X is less than Y and Y is not an integer multiple of X.

19. 14. The method of claim 13, wherein the at least two time domain symbols further include a third time domain symbol, and the first resource occupies the same frequency domain resource on the third time domain symbol and the first time domain symbol.

20. 14. The method of claim 13, wherein the at least two time domain symbols further include a fourth time domain symbol and a fifth time domain symbol, and the first resource occupies the same frequency domain resource on the fourth time domain symbol and the fifth time domain symbol.

21. 14. The method of claim 13, wherein there is an equal frequency domain spacing between any two adjacent subcarriers occupied by the first resource on any one of the at least two time domain symbols.

22. The method of claim 13 , wherein a bandwidth occupied by the first resource in the frequency domain is a resource pool bandwidth.

23. A communication device, a transceiver module and a processing module; A communications device, wherein the transceiver module is configured to perform the receiving and transmitting operations of the method of claim 1, and the processing module is configured to perform the processing operations of the method of claim 1.

24. A communications device comprising a processor, the processor configured to execute a computer program or computer instructions in a memory to perform the method of claim 1.

25. The communication device of claim 24 , wherein the communication device further comprises the memory.

26. 10. A computer-readable storage medium having a computer program stored thereon, the computer program, when executed by a communication device, enabling the communication device to perform the method of claim 1.

27. A communications device comprising a processor, the processor configured to execute a computer program or computer instructions in a memory to perform the method of claim 13.

28. 14. A computer-readable storage medium having a computer program stored thereon, the computer program, when executed by a communication device, enabling the communication device to perform the method of claim 13.

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