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 the priority of Chinese Patent Application No. 202210689320.7, titled "Communication Method and Communication Device", filed with the State Intellectual Property Office of China on June 17, 2022, the entire content of which is incorporated herein by reference.

[0002] This application relates to the field of communication technologies, and in particular, to communication methods and communication devices.

Background Art

[0003] The positioning function is an important function of a communication system. Currently, in the positioning process, in order to position the transmitting device and / or the receiving device, the transmission of positioning reference signals can be performed between the transmitting device and the receiving device. However, how to improve the positioning accuracy is an issue worthy of attention.

Summary of the Invention

Means for Solving the Problems

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

[0005] The first aspect of this application provides a communication method. The method includes the following.

[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 foregoing 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 and improves the positioning accuracy. For example, the Doppler shift between devices introduces a continuous phase change in the time domain. Therefore, the second communication device uses 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, and can accurately estimate the Doppler shift between the first communication device and the second communication device. The Doppler shift estimation performance is improved. In this way, the second communication device compensates for some multipath parameters obtained through measurement based on the Doppler shift, and then can perform accurate positioning on the first communication device or the second communication device using the compensated multipath parameters. Therefore, the positioning accuracy is improved and the positioning performance is improved.

[0008] The second aspect of the present application provides a communication method. The method includes the following.

[0009] The second communication device receives a first positioning reference signal transmitted by the first communication device on a first resource, where 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, the first resource occupies 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 foregoing 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 helps to perform accurate positioning on the first communication device or the second communication device, improving the positioning accuracy. For example, the Doppler shift between devices introduces a continuous phase change in the time domain. Therefore, the second communication device uses 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 to accurately estimate the Doppler shift between the first communication device and the second communication device. The Doppler shift estimation performance is improved. In this way, the second communication device compensates for some multipath parameters obtained through measurement based on the Doppler shift, and then uses the compensated multipath parameters to perform accurate positioning on the first communication device or the second communication device. Therefore, the positioning accuracy is improved and the positioning performance is improved.

[0011] The third aspect of this application provides a communication method. This method includes the following.

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

[0013] In the foregoing 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 indirectly indicates, using some possible relationships between the number of time-domain symbols and the comb value, that the first resource needs to 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 includes the following.

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

[0016] In the foregoing technical solution, the fourth communication device indicates, by using the first indication information, 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 first communication device determines the first resource to ensure positioning accuracy.

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

[0018] In this implementation form, the size of the time-domain resource occupied by the first time-frequency unit in the time domain is shown. It can be learned that the first time-frequency unit is in one slot, half of a slot, or a part of the time-domain symbol of one slot. Therefore, the technical solution of this application can be adapted to a positioning scenario where the number of available time-domain symbols is limited. For example, it can be adapted to a positioning scenario where the number of available time-domain symbols on the sidelink is limited.

[0019] Based on any one of the first aspect to the fourth aspect or the first implementation form, in the second implementation form of this 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 second-to-last time-domain symbol occupied by the first resource.

[0020] In this implementation form, the positions of the first time-domain symbol and the second time-domain symbol are shown. The Doppler shift between devices introduces a continuous phase change in the time domain. Therefore, the above implementation form 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, since 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 the 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 form, the AGC symbol is used to occupy the same frequency-domain resource on the time-domain symbol where the positioning reference signal is 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 a positioning scenario where the number of available time-domain symbols is limited is effectively solved. For example, this method is adapted to a positioning scenario 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 the 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 form, the first resource occupies an odd number of time-domain symbols. The present application provides an implementation form of the frequency-domain resource occupied by the first resource in the frequency domain for this implementation form. This helps to adapt to a positioning scenario where the number of available time-domain symbols is limited, for example, a positioning scenario 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 the fifth implementation form of the present application, the number of time-domain symbols occupied by the first resource in the time domain is 1 greater than the comb value corresponding to the first resource.

[0026] In this implementation mode, it is shown that the number of time-domain symbols occupied by the first resource is 1 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, the Doppler shift estimation performance is ensured and the positioning accuracy is improved.

[0027] Based on any one of the first aspect to the fourth aspect or any one of the first implementation mode to the fourth implementation mode, in the sixth implementation mode of the present application, the first resource occupies Y time-domain symbols in the time domain, the COMB value corresponding to the first resource is X, and Y is equal to X multiplied by an integer plus 1.

[0028] In this implementation mode, the first resource occupies Y time-domain symbols in the time domain, the COMB value corresponding to the first resource is X, and Y is equal to X multiplied by an integer 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, the Doppler shift estimation performance is ensured and the positioning accuracy is improved. In addition, Y can be equal to X multiplied by an integer plus 1. X and Y are related to the number of available time-domain symbols in one slot. The larger the number of available time-domain symbols, the larger the value of X and the larger the value of Y. The larger the value of X, the larger the value of Y, which helps to increase the multiplexing capacity of the slot.

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

[0030] This implementation form helps to implement 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 Doppler shift estimation performance is ensured and the 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. The larger the number of available time domain symbols, the larger the value of X and the larger the value of Y. The larger the value of X, the larger the value of Y, which helps to increase the multiplexing capacity of the slot.

[0031] Based on any one of the first aspect to the fourth aspect or any one of the first implementation form to the seventh implementation form, in the eighth implementation form of this application, 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 form, the first resource occupies the same frequency domain resource on the third time domain symbol and the fourth time domain symbol. This helps the second communication device to accurately determine the Doppler shift between the first communication device and the second communication device.

[0033] Based on any one of the first aspect to the fourth aspect or any one of the first implementation form to the seventh implementation form, in the ninth implementation form of this application, 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. This helps the second communication device accurately determine the Doppler shift between the first communication device and the second communication device.

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

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

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

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

[0039] The first communication device receives first configuration information from the fourth communication device. The first configuration information is used to configure the first resource. The first resource occupies Y time-domain symbols in the time domain. The corresponding comb value of the first resource is X. Y is equal to X plus 1, or Y is equal to X multiplied by an integer 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 the following.

[0041] The first communication device determines a first resource based on 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 some possible relationships between the number of time-domain symbols and the comb value to indirectly indicate that the first resource needs to 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 any one of the first aspect or the first implementation form to the eleventh implementation form, in the thirteenth implementation form of the present application, the method further includes the following.

[0044] The first communication device receives first indication information from the fourth communication device. The first indication information indicates 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 the following.

[0046] The first communication device determines the 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. In this way, the first communication device determines the first resource to ensure positioning accuracy.

[0048] Based on any one of the first to fourth aspects or any one of the first to thirteenth implementation forms of the present application, in the fourteenth implementation form of the present application, the first time-frequency unit further includes a second resource, and the second resource is used to transmit a second positioning reference signal of a 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. 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 form, 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 occupy different time-domain resources. This helps to implement multi-user multiplexing of time-frequency resources and improve the multiplexing capacity of multiple users in a single slot.

[0050] The fifth aspect of the present application provides a first communication device, a processing module configured to determine a first resource, 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 the first positioning reference signal to a second communication device on the first resource including

[0051] The 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, wherein the first resource occupies at least two time-domain symbols, 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, the transceiver module and a processing module configured to measure the first positioning reference signal to obtain a measurement result and position the first communication device or the second communication device based on the measurement result. including

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

[0053] The eighth aspect of the present application provides a fourth communication device, including a transceiver module configured to transmit first indication information to a first communication device. The first indication information indicates 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 the first implementation form of the present application, the first time-frequency unit occupies one slot, half of a slot, or a part 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 the 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 second last 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 the 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 the 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 the fifth implementation form of the present application, the number of time-domain symbols occupied by the first resource in the time domain is 1 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 the sixth implementation form of the present application, the first resource occupies Y time-domain symbols in the time domain, the comb value corresponding to the first resource is X, and Y is equal to X multiplied by an integer and then added by 1.

[0060] Based on any one of the fifth to eighth aspects or any one of the first to fourth implementation forms, in the seventh implementation form of the present application, the first resource occupies Y time-domain symbols in the time domain, the comb value corresponding to the first resource is X, 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 the eighth implementation form of the present application, 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 the ninth implementation form of the present application, 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 the tenth implementation form of the present application, there is an equal frequency-domain interval 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 the eleventh implementation form of the present application, the bandwidth occupied by the first resource in the frequency domain is the resource pool bandwidth.

[0065] Based on any one of the fifth aspect or any one of the first to eleventh implementation forms, in the twelfth implementation form of the present application, the transceiver module It is further configured to receive first configuration information from a fourth communication device. The first configuration information is used to configure a first resource. The first resource occupies Y time-domain symbols in the time domain. The 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 less than Y and Y is not an integer multiple of X.

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

[0067] Based on any one of the fifth aspect or the first implementation form to the eleventh implementation form, in the thirteenth implementation form of the present application, the transceiver module is Further configured to receive first instruction information from a fourth communication device. The first instruction information indicates 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 Specifically configured to determine a first resource based on the first instruction information.

[0069] Based on any one of the fifth aspect to the eighth aspect or any one of the first implementation form to the thirteenth implementation form of the present application, in the fourteenth implementation form of the present application, the first time-frequency unit further includes a second resource, and the second resource is used to transmit the 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. 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 the description of the beneficial effects shown in the fifth aspect, please refer to the first aspect. Details will not be described again. For the description of the beneficial effects shown in the sixth aspect, please refer to the second aspect. Details will not be described again. For the description of the beneficial effects shown in the seventh aspect, please refer to the third aspect. Details will not be described again. For the description of the beneficial effects shown in the eighth aspect, please refer to the fourth aspect. Details will not be described again.

[0071] The ninth aspect of the present application provides a communication device. The communication device includes a processor. The processor is configured to call and execute a computer program stored in a memory so that the processor can implement any one of the implementation forms of the first aspect to the fourth aspect.

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

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

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

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

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

[0077] A thirteenth aspect of the present application provides a 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 foregoing technical solution, it can be learned that the first communication device determines the first resource. The first resource is used to transmit the 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. 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 the 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 the positioning accuracy. For example, the Doppler shift between devices introduces a continuous phase change 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. The Doppler shift estimation performance is improved. 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. Therefore, the positioning accuracy is improved and the positioning performance is improved. Brief Description of the Drawings

[0081]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5A

Figure 5B

Figure 6A

Figure 6B

Figure 6C

Figure 7A

Figure 7B

Figure 8A

Figure 8B

Figure 8C

Figure 8D

Figure 9A

Figure 9B

Figure 10A

Figure 10B

Figure 11

Figure 12A

Figure 12B

Figure 12C

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

DETAILED DESCRIPTION OF THE INVENTION

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

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

[0084] References to "one embodiment", "some embodiments", etc. described in this application indicate that one or more embodiments of this application include the specific features, structures, or characteristics described with reference to the embodiments. Accordingly, descriptions such as "in one embodiment", "in some embodiments", "in some other embodiments", "in other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment. Instead, these descriptions mean "one or more, but not all, of the embodiments" unless otherwise particularly emphasized. The terms "comprise", "include", "have", and their variants all mean "include but not limited to" unless otherwise particularly emphasized in another way.

[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 only describes the association relationship between related objects and indicates that three relationships may exist. For example, A and / or B may represent the following three cases, namely, the case where only A exists, the case where both A and B exist, and the case where only B exists. In addition, "at least one" means one or more, and "a plurality of" means two or more. "At least one of the following items (parts)" or a similar expression refers to any combination of these items and includes any combination of a single item (part) or a plurality of items (parts). For example, at least one of a, b, or c may indicate 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 this application can be applied to various communication systems, such as the 5th generation (5G) mobile communication system, the new radio (NR) system, the long term evolution (LTE) system, the LTE frequency division duplex (FDD) system, the LTE time division duplex (TDD) system, the universal mobile telecommunication system (UMTS), the mobile communication system after the 5G network (e.g., the 6G mobile communication system), the vehicle to everything (V2X) communication system, the device to device (D2D) communication system, and so on.

[0087] Hereinafter, with reference to FIGS. 1 to 4, some scenarios applicable to this application will be described.

[0088] FIG. 1 is a diagram of a communication system according to an embodiment of this application. Please refer to FIG. 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 the access network device 102 through an interface, the access network device is connected to the AMF 103 through an interface, and the AMF 104 is connected to the LMF 104 through an interface. The LMF 104 is configured to perform positioning calculation and management of the location of the terminal device 101.

[0090] For example, the terminal device 101 is connected to the access network device 103 through the NR-Uu interface, and the access network device 102 is connected to the AMF 103 through the NG-C interface. The AMF 103 is connected to the LMF 104 through the NL1 interface. The technical solution of this application is executed between the terminal device 101 and the access network device 102. As a result, the LMF 104 positions the terminal device 101.

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

[0092] FIG. 2 is a diagram of another implementation form of the communication system according to an embodiment of this application. Please refer to FIG. 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 the access network device. The terminal device 201 communicates with the terminal device 202 through the proximity service communication (PC5) interface. The terminal device 201 can use the technical solution of this application to position the terminal device 201 and / or the terminal device 202.

[0093] FIG. 3 is a diagram of another implementation form of the communication system according to an embodiment of this application. Please refer to FIG. 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 outside the external signal coverage of the access network device. As shown in FIG. 3, the terminal device 301 communicates with the RSU through the PC5 interface. The terminal device 301 and the RSU can use the technical solution of this application to position the terminal device 301.

[0094] Note that in the communication system shown in FIG. 3, the form of the RSU is only an example and is not particularly limited to the RSU in this application.

[0095] Note that the RSU is a roadside unit deployed on the roadside, supports sidelink communication and positioning-related protocols, and can provide a wireless communication function to the terminal device. The RSU may be various forms of roadside stations, access points, or sidelink devices. In the case of an access network device, the RSU is a terminal device. In the case of a terminal device, the RSU can function as an access network device.

[0096] FIG. 4 is a diagram of another implementation form of the communication system according to an embodiment of the present application. This 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 within the signal coverage of the access network device 403, and the terminal device 402 is not located within the signal coverage of the access network device 403. The terminal device 401 and the terminal device 402 execute the technical solution of the present application and can transmit measurement results corresponding to the LMF 404 through the access network device 403. As a result, 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 the name in the current communication system. In future communication systems, the name of the LMF may change with the evolution of the communication system. The name of the LMF is not limited in this application. For example, the LMF may be called a location management device, and the location management device is configured to perform positioning calculations of the positions of terminal devices. In the current communication system or future communication systems, some functional network elements with different names and the same functions as the LMF may be understood as the location management device in the embodiments of the present application and are applicable to the communication methods provided in the embodiments of the present application.

[0098] The above-mentioned communication system to which the present application is applicable is only an example. In actual applications, the present application is further applicable to other communication systems with positioning requirements. This is not specifically limited in the present application. The above example is not intended to limit the technical solution of the present application.

[0099] Hereinafter, the terminal device and the access network device in the present application will be described.

[0100] The access network device is deployed in a wireless access network and provides a wireless communication function to the terminal device. The access network device may be a base station, and the base station may be various forms of macro base stations, micro base stations (also called small cells), relay stations, access points (APs), wearable devices, in-vehicle devices, etc. Alternatively, the base station may be a transmission and reception point (TRP), a 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). The base station in 5G new radio (NR) may be called a transmission reception point (TRP), a transmission point (TP), a next generation Node B (ngNB), or an evolved 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 of an access network device. This wireless terminal device can be a device that provides voice and / or data connections to a user, a handheld device with a wireless connection function, or another processing device connected to a wireless modem.

[0102] The terminal device is also called a user equipment (UE), mobile station (MS), mobile terminal (MT), etc., and is a device that includes a wireless communication function (providing voice / data connections for users), for example, a handheld device or an in-vehicle device with a wireless connection function. Currently, some examples of terminal devices are mobile phones, tablet computers, notebook computers, palmtop computers, trains, cars, unmanned aerial vehicles, airplanes, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals for industrial control, wireless terminals for vehicle internet, wireless terminals for self-driving, wireless terminals for smart grid, and wireless terminals for transportation safety, wireless terminals for smart city, etc. For example, the wireless terminal in vehicle internet may be an in-vehicle device, the entire vehicle device, an in-vehicle module, a vehicle, etc. The wireless terminal in industrial control may be a robot, etc.

[0103] In the positioning process, a positioning reference signal is transmitted between different communication devices to position the communication devices. Due to the movement of the communication devices, a Doppler shift is introduced into the positioning process, and the positioning accuracy is affected by the Doppler shift, which causes low positioning accuracy. For example, in a V2X system, in a positioning process such as ranging or angle measurement between vehicles, a Doppler shift is introduced due to the movement of the vehicle, affecting the positioning accuracy. This application provides corresponding technical solutions to improve the positioning accuracy and positioning 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] The communication system to which this 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] Hereinafter, some possible implementation forms of the first communication device and the second communication device will be 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 the terminal device 101, the second communication device and the fourth communication device are the same communication device, the second communication device is the access network device 102, and the third communication device is the LMF 104.

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

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

[0114] Implementation form 3: The first communication device is the first terminal device, and the second communication device is the 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 the 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 to say, the third communication device is an access network device.

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

[0118] Implementation form 4: The first communication device is the first terminal device, and the second communication device is the 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 the second terminal device. For example, as shown in FIG. 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 form 5: The first communication device is the RSU, and the second communication device is the 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 the 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 some examples and do not constitute a limitation to this application. The first communication device to the fifth communication device may further have other implementation forms. This is not specifically limited in this application.

[0126] Hereinafter, the technical terms in this application will be described.

[0127] Com value corresponding to the first resource: Generally, the com 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 1. For example, as shown in FIG. 5A, the resource includes the time-frequency resource represented by the shaded portion 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 there are 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 com value is 4. In the case of the first resource, the first resource occupies at least two time-domain symbols. The com 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 com value on each time-domain symbol. The subcarriers occupied by the first resource on each time-domain symbol are evenly distributed or equally spaced. For example, as shown in FIG. 6B, the first resource includes the shaded portion shown in FIG. 6B. The com value of the first resource on each time-domain symbol is 4.

[0128] Hereinafter, the technical solution of the present application will be described with reference to specific embodiments.

[0129] FIG. 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 the following.

[0130] 501: The 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, and 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 part of the resource pool bandwidth, or may occupy at least one resource block (RB), etc. This is not specifically limited in the present application.

[0133] Optionally, the bandwidth part is the operating bandwidth of the communication system, and the resource pool bandwidth is usually below the bandwidth part.

[0134] Optionally, in the case of the first communication device, the first resource may be all the resources used by the first communication device to transmit the first positioning reference signal. Alternatively, in the case of 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 part 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 side link (SL) communication system, the 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 subchannels 0 to 4. Each subchannel occupies two resource blocks (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 part of the resources used by the first communication device to transmit the first positioning reference signal. The first resource occupies time domain symbols 1 to 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 symbols 1 and 5, specifically, it occupies subcarriers 2, 6, 10, 14, 18, and 22. However, other subchannels may occupy the same subcarriers or different subcarriers on time domain symbols 1 and 5. This is not specifically limited in this application. In other words, in 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 or different frequency domain resources on the first time domain symbol and the second time domain symbol. This is not specifically limited in this application.

[0136] The foregoing example is described using sub-channels as an example. In reality, the first resource may be any bandwidth portion of the resource pool bandwidth and does not depend on the structure of the sub-channel. In the following, for the sake of explanation, an example where the first resource is all the resources used by the first communication device to transmit the first positioning reference signal is mainly used.

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

[0138] For example, in a sidelink positioning scenario, the time-domain symbols occupied by each SL slot can be used for SL transmission. The first time-frequency unit can occupy the 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, that is, half of the slot. In actual applications, it can be understood that the communication system allocates sub-slots to the first communication device for use.

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

[0140] For example, in a sidelink positioning scenario, five time-domain symbols, seven time-domain symbols, nine time-domain symbols, or eleven time-domain symbols of each SL slot can be used. In this case, the first time-frequency unit can be understood as part of the time-domain symbols of the SL slot. Alternatively, the time-domain symbol in each SL slot 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 in a part of the time-domain symbols of one slot occupied by the first time-frequency unit, part of the time-domain symbols may be continuous or discontinuous. This is not specifically limited in this application.

[0142] It should be noted that in this specification, time-domain symbols are used as time-domain units 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 of 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 second-to-last time-domain symbol occupied by the first resource.

[0144] For example, as shown in FIG. 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 FIG. 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 FIG. 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 second last time domain symbol (i.e., time domain symbol 4) are the same. As shown in FIG. 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 a first phase, and measure the first positioning reference signal received on the second time domain symbol to obtain a second phase. The second communication device may estimate the Doppler shift between the first communication device and the second communication device using the phase difference between the first phase and the second phase.

[0147] The Doppler shift between devices introduces a continuous phase change in the time domain. Thus, the above implementation helps the second communication device accurately determine the Doppler shift between the first and the second communication devices. 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 a first time-domain symbol and a second phase obtained by measuring the first positioning reference signal on a second time-domain symbol. However, since 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 and second time-domain symbols are discontinuous.

[0149] For example, as shown in FIG. 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 FIG. 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. Further, time-domain symbol 1 is further used as an AGC symbol.

[0150] For example, as shown in FIG. 7B, each of the first resources occupies five time domain symbols from time domain symbol 0 to time domain symbol 4. The subcarriers occupied by the first resource on the first time domain symbol (i.e., time domain symbol 0) and the second last time domain symbol (i.e., time domain symbol 3) are the same. As shown in FIG. 7B, 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. Further, 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 FIG. 6B, the first resource occupies five consecutive time domain symbols in the time domain. In the example shown in FIG. 6B, in the SL positioning scenario, the communication system is configured such that seven time domain symbols of one SL slot are available. Specifically, time domain symbols 1 to 7 shown in FIG. 6B are used. Time domain symbol 0 is an AGC symbol, and time domain symbols 1 to 5 are five consecutive time domain symbols occupied by the first resource. Time domain symbol 6 is a GAP symbol.

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

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

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

[0157] For example, as shown in FIG. 6B, the first resource occupies subcarriers 0, 4, 8, 12, 16, and 20 on time domain symbol 1. Subcarrier 0 is adjacent to subcarrier 4, and subcarrier 4 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 separated by an equal number of subcarriers.

[0158] Hereinafter, the comb value corresponding to the first resource will be described.

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

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

[0161] The following describes some possible implementations of the first resource.

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

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

[0164] 2. The first resource occupies Y time-domain symbols in the time domain, the CoM value corresponding to the first resource is X, and X is equal to Y multiplied by an integer and then added with 1.

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

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

[0167] For example, as shown in FIG. 8D, the first resource occupies nine time-domain symbols in the time domain, and the CoM value corresponding to the first resource is 4. It can be learned that the number of time-domain symbols is equal to 2 times the CoM value corresponding to the first resource and then added with 1.

[0168] 3. The first resource occupies Y time-domain symbols in the time domain, the CoM value corresponding to the first resource is X, X is smaller 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 FIG. 8D, the first resource occupies nine time-domain symbols in the time domain, and the CoM value corresponding to the first resource is 4. It can be learned that the number of time-domain symbols is greater than the CoM value corresponding to the first resource, and the number of time-domain symbols is not an integer multiple of the CoM value corresponding to the first resource.

[0170] In a possible implementation form, 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 symbols 1 to 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). From FIG. 9A, it can be learned that the first resource occupies the same subcarrier on time-domain symbols 1, 3, and 5.

[0172] It should be noted that in this application, in the time-domain symbols occupied by the first resource, the same frequency-domain resource is occupied on at least two time-domain symbols. In the foregoing, the first time-domain symbol, the second time-domain symbol, and the third time-domain symbol are used as examples to explain the technical solution of this application, and do not constitute a limitation to this application.

[0173] In this implementation, the first resource occupies the same frequency-domain resource on three time-domain symbols. As a result, it can be learned 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, 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 symbols from time-domain symbol 1 to 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 second last 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 subcarrier on time-domain symbol 1 and time-domain symbol 7. The first resource occupies the same subcarrier 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. This helps the second communication device 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 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.

[0178] For example, as shown in FIGS. 10A and 10B, the first communication device is RSU 1 and the fifth communication device is RSU 2. The first resource occupies time-domain symbols from 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 second last 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 time-domain symbol and the seventh time-domain symbol are the same as the first time-domain symbol and the second time-domain symbol. For details, refer to the related descriptions of the first time-domain symbol and the second time-domain symbol of the first resource.

[0182] Optionally, at least two time domain symbols occupied by a second resource further include an eighth time domain symbol, and 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 the same as the third time domain symbol. For details, refer to the related description of the third time domain symbol occupied by the first resource.

[0183] Optionally, at least two time domain symbols occupied by a 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 the same as the fourth time domain symbol and the fifth time domain symbol. For details, 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, refer to the related description of the first resource. Details will not be described again in this specification.

[0185] Hereinafter, some possible implementations of the time-frequency positions occupied by the first resource and the second resource will be described.

[0186] Embodiment 1: The first resource and the second resource occupy the same frequency domain resource, and 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.

[0187] For example, as shown in FIGS. 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 FIGS. 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 FIGS. 10A and 10B, it can be learned that both the first resource and the second resource occupy time domain symbols 1 to 5 in the time domain, and on the same time domain symbol of these time domain symbols, the first resource and the second resource occupy different subcarriers. 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 the terminal device, more accurate positioning can be further performed by referring to the first positioning reference signals transmitted by more RSUs. As shown in FIGS. 10A and 10B, RSU 3 transmits a third positioning reference signal using a third resource, and RSU 4 transmits a fourth positioning reference signal using a fourth resource. From FIGS. 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 symbols 1 to 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. Thereby, in the sidelink communication system, the problem that it is difficult to perform multi-user multiplexing when a user is scheduled in slot units can be solved.

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

[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 uses the first resource to transmit the first positioning reference signal. RSU 2 uses the second resource to transmit the second positioning reference signal. From FIG. 11, it can be learned that both the first resource and the second resource occupy time domain symbols 1 to 5 in the time domain, and on the same time domain symbol of these time domain symbols, the first resource and the second resource occupy different subcarriers. For example, as shown in FIG. 11, the first resource occupies subcarriers 0, 4, and 8 on time domain symbol 1. However, the second resource occupies subcarriers 14, 18, and 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 the frequency division multiplexing relationship. For example, in a positioning method based on the angle of arrival or departure angle of the first positioning reference signal, angle measurement does not require the first positioning reference signal to occupy a large bandwidth. In other words, the accuracy of 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. Thereby, in a sidelink communication system, the problem that it is difficult to implement multi-user multiplexing when users are scheduled in slot units can be solved.

[0191] The above-mentioned solution is applicable to a scenario 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 form 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 symbols 1 to 3, and the second resource occupies time domain symbols 6 to 8.

[0194] For example, as shown in FIG. 12B, the first resource occupies time domain symbols 1 to 5. The second resource occupies time domain symbols 8 to 12.

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

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

[0197] In the above examples, 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 resources with smaller granularity. Through such resource division, multiplexing ability 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, and as a result, the multiplexing ability of multiple users in a single slot in the time domain is implemented. This can solve the problem that it is difficult to implement multi-user multiplexing when users are scheduled in units of slots in a sidelink communication system.

[0198] Optionally, the number of time domain symbols occupied by the first resource and the second resource may be the same or different. This 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 FIG. 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 occupy the same number of time domain symbols.

[0201] Optionally, the COAM value corresponding to the first resource and the COAM value corresponding to the second resource may be the same or different. This is not specifically limited in this application.

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

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

[0204] Optionally, the bandwidth occupied by the first resource in the frequency domain is the resource pool bandwidth. For example, in an 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 FIG. 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 can 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 FIG. 11, the resource pool bandwidth includes the frequency domain bandwidth between sub-carrier 0 and sub-carrier 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 a fourth communication device for the first communication device. This is not specifically limited in this application.

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

[0210] For example, the first communication device is a base station, the second communication device is a terminal device, and the base station may configure the first resource. Further optionally, the base station may further transmit the related 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 implementation forms so that the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol. This is also applicable to other implementation forms. This is not specifically limited in this application.

[0212] Hereinafter, Embodiment 1 will be described with reference to Step 501a.

[0213] Optionally, the embodiment shown in FIG. 5B further includes Step 501a. Step 501a can be performed before Step 501.

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

[0215] The first configuration information is used to configure the first resource for the first communication device. The first resource occupies Y time domain symbols in the time domain. The COAM value corresponding to the first resource is X. Y is equal to X plus 1, or Y is equal to X multiplied by an integer 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 COAM value corresponding to the first resource, please refer to the related description. 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 COAM value corresponding to the first resource. The fourth communication device uses some possible relationships between the number of time domain symbols and the COAM value to indirectly indicate that the first resource needs to 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 COMU 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, the position of the start time domain symbol of the time domain symbols occupied by the first resource, and the position of the end time domain symbol of the time domain symbols occupied by the first resource.

[0221] Based on the foregoing step 501a, optionally, the foregoing step 501 specifically includes the following.

[0222] The first communication device determines the 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 COMU value is 4. The start time domain symbol occupied by the first resource is the time domain symbol 2 of the slot, and the end time domain symbol occupied by the first resource is the time domain symbol 6 of the slot. The frequency domain offsets corresponding to the time domain symbol 2 with respect to the time domain symbol 6 occupied by the first resource are 0, 2, 1, 3, and 0. Therefore, the first resource may include the time-frequency resource represented by the shaded portion shown in FIG. 6B.

[0224] Hereinafter, Embodiment 1 will be described with reference to step 501b.

[0225] Optionally, the embodiment shown in FIG. 5B further includes step 501b. Step 501b can be performed before step 501.

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

[0227] The first instruction information 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 the following.

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

[0230] For example, as shown in FIG. 13, the fourth communication device configures the first resource for the first communication device. The first resource occupies four time domain symbols, and the coom value corresponding to the first resource is 4. The first communication device may be configured such that the first time domain symbol and the last time domain symbol occupied by the first resource occupy the same frequency domain resource based on the first instruction information. The first resource includes the time-frequency resource shown in the shaded part of FIG. 13.

[0231] Note that in the solution where the first time domain symbol is an AGC symbol and the first time domain symbol and the second time domain symbol are discontinuous, the first resource may be divided into two parts. One part is the resource used for AGC, and the other part is the 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 one slot, that is, the second to fifth time domain symbols (referred to as time domain symbols 1 to 4 herein), respectively. The Com 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 second last time domain symbol occupied by the first resources used to transmit the first positioning reference signal.

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

[0234] 502: The first communication device transmits a first positioning reference signal to the second communication device on the first resource. Correspondingly, 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 this 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 this 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 this 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 to obtain a measurement result.

[0239] Optionally, the measurement result includes at least one of the arrival time and arrival angle of the first positioning reference signal.

[0240] Specifically, the second communication device may measure the first positioning reference signal to obtain multipath parameters, for example, the time and angle at which the first positioning reference signal reaches the second communication device. 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. Then, the first communication device determines the phase difference between the first phase and the second phase, and uses the phase difference to determine the Doppler shift between the first communication device and the second communication device. And the first communication device compensates the multipath parameters using the Doppler shift. In other words, the measurement result includes multipath parameters, and the multipath parameters are compensated using the Doppler shift. Alternatively, the measurement result includes multipath parameters and Doppler shift, and the multipath parameters are not compensated 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 a first positioning reference signal on a third time domain symbol to obtain a third phase. The second communication device may comprehensively determine a Doppler shift 1 between the first communication device and the second communication device by using the first phase, the second phase, and the third phase.

[0243] Optionally, at least one time domain symbol further includes a fourth time domain symbol and a fifth time domain symbol. 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 a first positioning reference signal on a first time domain symbol to obtain a first phase. The second communication device may measure a first positioning reference signal on a second time domain symbol to obtain a second phase. Then, the first communication device determines a phase difference between the first phase and the second phase, and uses the phase difference to determine a Doppler shift 1 between the first communication device and the second communication device. The second communication device may measure a first positioning reference signal on a fourth time domain symbol to obtain a fourth phase. The second communication device may measure a first positioning reference signal on a fifth time domain symbol to obtain a fifth phase. Then, the second communication device determines a phase difference between the fourth phase and the fifth phase, and uses the phase difference to determine a Doppler shift 2 between the first communication device and the second communication device. The second communication device may finally determine the Doppler shift between the first communication device and the second communication device by referring to the Doppler shift 1 and the Doppler shift 2.

[0245] Optionally, after the second communication device determines the measurement result, the second communication device may execute the following two possible solutions. The two solutions are described separately below.

[0246] Hereinafter, with reference to step 504, a first possible solution is described.

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

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

[0249] For example, the measurement results include multipath parameters obtained through Doppler shift compensation. As shown in FIG. 2, the first communication device is the terminal device 201, and the second terminal device is the terminal device 202. The terminal device 202 may use the multipath parameters to position 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 FIG. 3, the first communication device is the RSU 302, and the second communication device is the terminal device 301. The terminal device 301 may receive measurement results corresponding to the RSU 302, the RSU 303, and the RSU 304 respectively. Then, the terminal device 301 combines these multipath parameters to position the terminal device 301.

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

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

[0253] 505: The second communication device transmits the measurement results to a third communication device. Correspondingly, the third communication device receives the measurement results from the second communication device.

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

[0255] For example, as shown in FIG. 4, the first communication device is the terminal device 402, the second communication device is the terminal device 401, and the third communication device is the LMF 404. The terminal device 401 transmits the measurement result to the LMF 404 via the access network device 403. In this way, the LMF 404 can position the terminal device 402 or the terminal device 401.

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

[0257] For example, the measurement result includes an uncompensated multipath parameter and a Doppler shift using the Doppler shift, and the third communication device may compensate the multipath parameter using the Doppler shift. Then, the third communication device positions the first communication device or the second communication device using the compensated multipath parameter.

[0258] For example, as shown in FIG. 1, the first communication device is the terminal device 101, the second communication device is the access network device 102, and the third communication device is the LMF 104. The access network device 102 transmits the measurement result to the LMF 104 via the LMF 103. The LMF 104 compensates the multipath parameter using the Doppler shift. Then, the third communication device positions the terminal device 101 using the compensated multipath parameter.

[0259] In this embodiment of the present application, the first communication device determines 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. 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 the 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 the positioning accuracy. For example, the Doppler shift between devices introduces a continuous phase change 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. The Doppler shift estimation performance is improved. 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. Therefore, the positioning accuracy is improved and the positioning performance is improved.

[0260] In an example other than the example where the first time-domain symbol is an AGC symbol in the foregoing example, the position of the AGC symbol is only an example and does not constitute a limitation to the present application. The position of the GAP symbol in the foregoing example is also an example and does not constitute a limitation to the present application.

[0261] Hereinafter, the first communication device provided in the embodiment of the present application will be described. FIG. 14 is a diagram of the structure of the 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 FIG. 5B. For details, refer to the related descriptions in the foregoing method embodiments.

[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 be referred to as a communication interface or a communication unit. The processing module 1402 is configured to execute processing operations.

[0264] Optionally, the first communication 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 of the storage module so that the communication device implements 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 foregoing method embodiments. The first communication device 1400 may be the first communication device or a component that can be arranged in the first communication device. The transceiver module 1401 is configured to perform reception-related operations on the first communication device side in the foregoing method embodiments, and the processing module 1402 is configured to perform processing-related operations on the first communication device side in the foregoing method embodiments.

[0266] Optionally, the transceiver module 1401 may include a transmission module and a reception module. The transmission module is configured to perform the transmission operation of the first communication device in the foregoing method embodiment shown in FIG. 5B. The reception module is configured to perform the reception operation of the first communication device in the foregoing method embodiment shown in FIG. 5B.

[0267] It should be noted that the first communication device 1400 may include a transmission module, but may not include a reception module. Alternatively, the first communication device 1400 may include a reception module, but may not include a transmission module. This may be specifically determined according to whether the foregoing solution performed by the first communication device 1400 includes a transmission action and a reception action.

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

[0269] The processing module 1402 is configured to determine 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. The first resource occupies 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 the first resource.

[0271] In a possible implementation form, the first time-frequency unit occupies one slot, half of a slot, or a part of the time-domain symbols of one slot in the time domain.

[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 time-domain symbol or the second last 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 discontinuous.

[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 1 greater than the COAM value corresponding to the first resource.

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

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

[0278] In another possible implementation, 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, 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, in a sub - carrier occupied by a first resource with any one of at least two time - domain symbols, there is an equal frequency - domain interval between any two adjacent sub - carriers.

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

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

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

[0284] In another possible implementation, the transceiver module 1401 is further configured to receive first indication information from a fourth communication device. The first indication information indicates 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 is specially 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 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. The second resource occupies 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 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 may satisfy a frequency-division multiplexing relationship. Alternatively, the first resource and the second resource occupy different time-domain resources.

[0288] Hereinafter, the second communication device provided in the embodiments of the present application will be described. FIG. 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 FIG. 5B. For details, please refer to the relevant descriptions in the foregoing method embodiments.

[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 execute processing operations.

[0291] Optionally, the second communication 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 of the storage module so that the communication device implements 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 foregoing method embodiments. The second communication device 1500 may be the second communication device or a component that can be arranged in the second communication device. The transceiver module 1501 is configured to perform reception-related operations on the second communication device side in the foregoing method embodiments, and the processing module 1502 is configured to perform processing-related operations on the second communication device side in the foregoing method embodiments.

[0293] Optionally, the transceiver module 1501 may include a transmission module and a reception module. The transmission module is configured to execute the transmission operation of the second communication device in the foregoing method embodiments shown in FIG. 5B. The reception module is configured to execute the reception operation of the second communication device in the foregoing method embodiments shown in FIG. 5B.

[0294] It should be noted that the second communication device 1500 may include a transmission module, but may not include a reception module. Alternatively, the second communication device 1500 may include a reception module, but may not include a transmission module. This may be specifically determined according to whether the foregoing solution performed by the second communication device 1500 includes a transmission action and a reception action.

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

[0296] The transceiver module 1501 is configured to receive the first positioning reference signal transmitted by the first communication device on the 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 a first positioning reference signal to obtain a measurement result, and 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 execute the following solution.

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

[0304] Optionally, the first time-frequency unit occupies one slot, half of a slot, or a part of the time-domain symbols 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 second-to-last 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 discontinuous.

[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 1 greater than the coom value corresponding to the first resource.

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

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

[0311] Optionally, 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, 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 a subcarrier occupied by a first resource with any one of at least two time-domain symbols, there is an equal frequency-domain interval between any two adjacent subcarriers.

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

[0315] Optionally, the first time-frequency unit further includes a second resource. The second resource is used to transmit a second positioning reference signal of a 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. 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 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 may satisfy a frequency-division multiplexing relationship. Alternatively, the first resource and the second resource occupy different time-domain resources.

[0317] Hereinafter, a fourth communication device provided in an embodiment of the present application will be described. FIG. 16 is a diagram of the structure of a 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 FIG. 5B. For details, please refer to the relevant descriptions in the foregoing method embodiments.

[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 execute processing operations.

[0320] Optionally, the fourth communication device 1600 may further include a memory module. The memory module may be configured to store instructions and / or data. The processing module 1602 may read the instructions and / or data of the memory module so that the communication device implements 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 foregoing 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 on the fourth communication device side in the foregoing method embodiments, and the processing module 1602 is configured to perform processing-related operations on the fourth communication device side in the foregoing method embodiments.

[0322] Optionally, the transceiver module 1601 may include a transmission module and a reception module. The transmission module is configured to execute the transmission operation of the fourth communication device in the foregoing method embodiment shown in FIG. 5B. The reception module is configured to execute the reception operation of the fourth communication device in the foregoing method embodiment shown in FIG. 5B.

[0323] It should be noted that the fourth communication device 1600 may include a transmission module but may not include a reception module. Alternatively, the fourth communication device 1600 may include a reception module but may not include a transmission module. This may be specifically determined according to whether the foregoing solution performed by the fourth communication device 1600 includes transmission actions and reception actions.

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

[0325] The transceiver module 1601 is configured to transmit first configuration information to the first communication device. The first configuration information is used to configure a first resource. The first resource occupies Y time-domain symbols in the time domain. The corresponding comb value of the first resource is X, and Y is equal to X plus 1, or Y is equal to X multiplied by an integer 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 execute the following solution.

[0327] The transceiver module 1601 is configured to transmit first indication information to the first communication device. The first indication information indicates 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, at least two time-domain symbols are located in the same slot, and the first resource is used to transmit the first positioning reference signal of the first communication device.

[0328] FIG. 17 is a diagram of a possible structure where the communication device is a terminal device.

[0329] FIG. 17 is a diagram of a simplified structure of the terminal device. For ease of understanding and illustration, in FIG. 17, an example of a mobile phone is used 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 mainly configured to process communication protocols and communication data, control the terminal device, execute software programs, and process the data of software programs. The memory is mainly configured to store software programs and data.

[0331] The radio frequency circuit is mainly configured to perform conversion between a baseband signal and a radio frequency signal and process the radio frequency signal.

[0332] The antenna is mainly configured to receive and transmit radio frequency signals in the form of electromagnetic waves.

[0333] Input / output devices such as a touch screen, a display, or a keyboard are mainly configured to receive data input by a user and output data to the user.

[0334] Note that depending on the type of the terminal device, it may not have an input / output device.

[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. The radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal externally in the form of electromagnetic waves via 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 also be referred to as a storage medium, a storage device, etc. The memory may be placed independently of the processor or integrated with the processor. This is not limited in the embodiments of this application.

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

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

[0339] It should be understood that the transceiver unit 1710 is configured to perform the transmitting operation and the receiving operation of the first communication device or the second communication device in the foregoing method embodiments, and the processing unit 1720 is configured to perform operations other than the transmitting operation and the receiving operation of the first communication device or the second communication device in the foregoing 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 is a processor, a microprocessor, an integrated circuit, or a logic circuit integrated on the chip.

[0341] This application further provides a communication device. FIG. 18 is a diagram of another structure of the communication device according to an embodiment of this application. The communication device may be configured to execute the steps executed by the first communication device, the second communication device, or the fourth communication device of the embodiment shown in FIG. 5. For details, refer to the related descriptions in the foregoing 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 form, the processor 1801, the memory 1802, and the transceiver 1803 are individually connected through a bus, and the memory stores computer instructions.

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

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

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

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

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

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

[0350] One embodiment of the present application further provides a computer program product including instructions. When the computer program product is executed on a computer, the computer can execute the method of the embodiment shown in FIG. 5B.

[0351] One embodiment of the present application further provides a computer-readable storage medium including computer instructions. When the computer instructions are executed on a computer, the computer can execute the method of the embodiment shown in FIG. 5B.

[0352] One embodiment of the present application further provides a chip device including a processor connected to a memory and calling a program stored in the memory. As a result, 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 the program execution of the method of the embodiment shown in FIG. 5B. Any of the above memories may be a read-only memory (ROM), another type of static storage device capable of storing static information and instructions, a random access memory (RAM), or the like.

[0354] For the sake of simplicity, for the detailed operation processes of the above-mentioned systems, devices, and units, those skilled in the art can clearly understand by referring to the corresponding processes in the foregoing method embodiments. Details are not described again in this specification.

[0355] In some embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the described device embodiments are merely examples. For example, the division into units is merely a logical function division, and in actual implementation, it may be divided in other ways. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition to this, the displayed, described, or direct connections and communication connections may be implemented using some interfaces. The indirect coupling or communication connection between devices or units may be implemented in electronic form, mechanical form, 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. They may be arranged in one place or distributed over multiple network units. To achieve the purpose of the solution of the embodiments, some or all of the units may be selected based on actual requirements.

[0357] In addition, the functional units of the embodiments of this application may be integrated into one processing unit, each of the units 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 such understanding, the technical solution of this application, in essence, or the part that contributes to the current technology, or all or part 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 execute all or part of the steps of the method described in the embodiments of this application. The aforementioned storage medium includes any medium that can store 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 not intended to limit this application, but only to illustrate the technical solution of this application. Although this application has been described in detail in relation to the foregoing embodiments, those skilled in the art should understand that further modifications can be made to the technical solutions described in the foregoing embodiments or equivalent substitutions can be made to some of the technical features of the foregoing embodiments without departing from the spirit and scope of the technical solutions of the embodiments of this application.

Description of Reference Signs

[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 Road Side Unit (RSU) 1400 First Communication Device 1401, 1501, 1601 Transceiver Modules 1402, 1502, 1602 Processing Modules 1500 Second communication device 1600 Fourth communication device 1710 Transceiver unit 1720 Processing unit 1801 Processor 1802 Memory 1803 Transceiver

Claims

Claim 1 A communication method, comprising: a step of determining, by a first communication device, a first resource, 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; a step of transmitting, by the first communication device, the first positioning reference signal to a second communication device on the first resource; and a method comprising the above steps. Claim 2 A communication method, comprising: a step of receiving, by a second communication device, a first positioning reference signal transmitted by a first communication device on a first resource, wherein 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; a step of measuring, by the second communication device, the first positioning reference signal to obtain a measurement result; a step of positioning, by the second communication device, the first communication device or the second communication device based on the measurement result, or a step of transmitting, by the second communication device, the measurement result to a third communication device, wherein the measurement result is used by the third communication device to position the first communication device or the second communication device; and a method comprising the above steps. Claim 3 The method according to claim 1 or 2, wherein the first resource occupies a first time-frequency unit, and the first time-frequency unit occupies one slot, half of a slot, or a part of time-domain symbols of one slot in the time domain. Claim 4 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 second last time-domain symbol occupied by the first resource. The method according to any one of claims 1 to 3.

5. 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. The method according to any one of claims 1 to 4.

6. The number of time-domain symbols occupied by the first resource in the time domain is 1 greater than the Com value corresponding to the first resource. The method according to any one of claims 1 to 5.

7. The first resource occupies Y time-domain symbols in the time domain, the Com value corresponding to the first resource is X, and X is equal to Y plus 1 times an integer multiple. The method according to any one of claims 1 to 5.

8. The first resource occupies Y time-domain symbols in the time domain, the Com value corresponding to the first resource is X, X is less than Y, and Y is not an integer multiple of X. The method according to any one of claims 1 to 5.

9. 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. The method according to any one of claims 1 to 8.

10. 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. The method according to any one of claims 1 to 8.

11. In the subcarriers occupied by the first resource on any one of the at least two time-domain symbols, there is an equal frequency-domain interval between any two adjacent subcarriers. The method according to any one of claims 1 to 10.

12. The bandwidth occupied by the first resource in the frequency domain is the resource pool bandwidth. The method according to any one of claims 1 to 11.

13. A step of receiving, by the first communication device, first configuration information from a fourth communication device, wherein the first configuration information is used to configure the first resource, 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 X multiplied by an integer plus 1, or X is less than Y and Y is not an integer multiple of X, step further comprising The step of determining, by the first communication device, the first resource is A step of determining, by the first communication device, the first resource based on the first configuration information The method according to any one of claims 1 and 3 to 12, comprising

14. A step of receiving, by the first communication device, first indication information from a fourth communication device, wherein the first indication information indicates that the first resource occupies the same frequency domain resource on the first time domain symbol and the second time domain symbol, step further comprising The step of determining, by the first communication device, the first resource is A step of determining, by the first communication device, the first resource based on the first indication information The method according to any one of claims 1 and 3 to 12, comprising

15. A communication device, comprising A transceiver module and a processing module, The transceiver module is configured to execute the receiving and transmitting operations of the method according to any one of claims 1 and 3 to 14, and the processing module is configured to execute the processing operations of the method according to any one of claims 1 and 3 to 14, or The transceiver module is configured to execute the receiving and transmitting operations of the method according to any one of claims 2 to 12, and the processing module is configured to perform the processing operations of the method according to any one of claims 2 to 12, Communication device

16. A communication device comprising a processor, wherein the processor is configured to execute a computer program or computer instructions in a memory to perform the method according to any one of claims 1 and 3 to 14, or to perform the method according to any one of claims 2 to 12, Communication device

17. The communication device according to claim 16, further comprising the memory.

18. A computer-readable storage medium storing a computer program, which, when executed by a communication device, enables the communication device to execute the method according to any one of claims 1 and 3 to 14, or enables the communication device to execute the method according to any one of claims 2 to 12.

Images