METHOD FOR TRANSMITTING SIDELINK POSITIONING REFERENCE SIGNAL AND RELATED APPARATUS - Patent application

Abstract

An embodiment of the present application provides a method and a related apparatus for transmitting a sidelink positioning reference signal. The method comprises a first communication device determining at least one of the following information: a frequency domain resource of the sidelink positioning reference signal and a sequence parameter of the sidelink positioning reference signal, where the information is associated with a sidelink control channel. The first device transmits the sidelink control channel and the sidelink positioning reference signal within a slot based on the information. In the above technical solution, the information is associated with the sidelink control channel. In this way, after receiving the sidelink control channel, the receiving end device can obtain the resource of the sidelink positioning reference signal based on a correlation between the information and the sidelink control channel, and acquire the sidelink positioning reference signal on the resource of the sidelink positioning reference signal.

Description

[Technical Field]

[0001] TECHNICAL FIELD Embodiments of the present application relate to the field of communication technologies, and more particularly to a method and related apparatus for transmitting a sidelink positioning reference signal. [Background technology]

[0002] Location information has become more and more important in daily life and applications. Applications such as navigation services and location-based services (LBS) need to provide users with corresponding services based on their location information.

[0003] Currently, the global navigation satellite system (GNSS) is a commonly used solution for determining position information. However, the positioning accuracy of GNSS may not be able to meet the requirements of some applications that require high accuracy.

[0004] To solve this problem, sidelink positioning techniques have been proposed in the industry, but how to transmit sidelink positioning reference signals remains a concern in the industry. Summary of the Invention

[0005] The present application provides a method and a related apparatus for transmitting a sidelink positioning reference signal (SLRS). In the method, information about the SLRS may be associated with a SLRC. In this way, after receiving the SLRC, the receiving end device can obtain a SLRS resource based on the correlation between the information and the SLRC, and obtain the SLRS resource on the SLRS resource.

[0006] According to a first aspect, an embodiment of the present application provides a method for transmitting a sidelink positioning reference signal, the method comprising: a first communication device determining at least one of the following information: a frequency domain resource of the sidelink positioning reference signal and a sequence parameter of the sidelink positioning reference signal, where the information is associated with a sidelink control channel; and the first device transmitting the sidelink control channel and the sidelink positioning reference signal within a slot based on the information.

[0007] In the above technical solutions, the information (specifically, the frequency domain resource of the SLRM and / or the sequence parameter of the SLRM) is associated with the SLCH. In this way, after receiving the SLCH, the receiving end device can obtain the resource of the SLRM based on the correlation between the information and the SLCH, and then obtain the SLRM on the resource of the SLRM.

[0008] Referring to the first aspect, in a possible implementation of the first aspect, the sidelink control channel and the sidelink positioning reference signal are transmitted in the same slot.

[0009] In the above technical solution, the sidelink control channel and the sidelink positioning reference signal correlated with the information are transmitted in the same slot. In this way, the first communication device transmits the information, the sidelink control channel, and the sidelink positioning reference signal to the receiving end device in the same slot, and does not need to indicate the information to the receiving end device in advance in another slot. This can save time-domain resources. Furthermore, if the information, the sidelink control channel, and the sidelink positioning reference signal are transmitted in different slots, the information still needs to indicate the slot in which the transmitted frequency-domain resources and / or sequence parameters of the sidelink positioning reference signal are included. If the information, the sidelink control channel, and the sidelink positioning reference signal are transmitted to the receiving end device in the same slot, the receiving end device may directly determine the frequency-domain resources and / or sequence parameters of the sidelink positioning reference signal in the slot based on the information obtained in the slot. This can reduce the amount of information the first communication device needs to transmit and save air interface resources.

[0010] Referring to the first aspect, in a possible implementation of the first aspect, the sidelink control channel is located before the sidelink positioning reference signal within the slot.

[0011] Since the SLCH precedes the SLRS, the receiving end device may first obtain information associated with the SLCH to determine frequency domain resources and / or sequence parameters of the SLRS.

[0012] Referring to the first aspect, in a possible implementation example of the first aspect, the resources of the sidelink positioning reference signal in each symbol are Y resource elements RE out of Y×N resource elements RE, one out of every N REs is occupied by the sidelink positioning reference signal, Y is a number greater than 0 and N is a positive integer.

[0013] If N is a positive integer greater than or equal to 2, the frequency domain resources of each symbol may be multiplexed for use by N communication devices. In this way, multiple communication devices may transmit sidelink positioning reference signals by using the same time domain resource.

[0014] With reference to the first aspect, in possible implementations of the first aspect, the information being associated with a sidelink control channel comprises: the information being carried in the sidelink control channel; and / or the information being determined based on frequency domain resources and / or sequence parameters of the sidelink control channel.

[0015] If the information is carried in the sidelink control channel, the resource locations of the sidelink control channel can be decoupled from the resource locations of the sidelink positioning reference signal. This helps to find good resources for the sidelink control channel and good resources for the sidelink positioning reference signal. If the information is determined based on frequency domain resources and / or sequence parameters of the sidelink control channel, the amount of information that the sidelink control channel needs to carry can be reduced, and therefore the sidelink control channel can have more idle resources for transmitting other information.

[0016] Referring to the first aspect, in a possible implementation of the first aspect, the information further includes sequence parameters of a sidelink control channel.

[0017] If the information includes sequence parameters for the sidelink control channels, it indicates that different sequences are used to transmit the sidelink control channels on the same frequency domain resources. Specifically, the sidelink control channels are transmitted in frequency division and code division mode, which increases the capacity of the sidelink control channels and improves the transmission performance of the system.

[0018] With reference to the first aspect, in a possible implementation thereof, the sequence parameters of the sidelink control channel comprise at least one of the following information: a cyclic shift CS value of the sidelink control channel, a root sequence index of the sidelink control channel, or an orthogonal sequence index of the sidelink control channel.

[0019] With reference to the first aspect, in a possible implementation thereof, the sequence parameters of the sidelink positioning reference signal comprise at least one of the following information: a cyclic shift CS value of the sidelink positioning reference signal, a root sequence index of the sidelink positioning reference signal, an orthogonal sequence index of the sidelink positioning reference signal, or a parameter for generating an initial value of the sequence of the sidelink positioning reference signal.

[0020] If the information includes sequence parameters of the sidelink positioning reference signals, it indicates that different sequences are used for transmitting the sidelink positioning reference signals on the same frequency domain resources. Specifically, the sidelink positioning reference signals are transmitted in frequency division and code division mode, which increases the capacity of the sidelink positioning reference signals and improves the system transmission performance.

[0021] Referring to the first aspect, in a possible implementation example of the first aspect, a first frequency domain resource index and / or a first sequence index is determined based on an index of the frequency domain resource of the sidelink control channel, the first frequency domain resource being a frequency domain resource of the sidelink positioning reference signal, and the first sequence index corresponds to a sequence parameter for determining the sidelink positioning reference signal.

[0022] According to the above technical solution, when the frequency domain resource index of the sidelink control channel is determined, the first frequency domain resource index and / or the first sequence index can be determined, and the sidelink control channel does not need to carry additional information to indicate the first frequency domain resource index and / or the first sequence index, thereby reducing the amount of information that the sidelink control channel needs to carry so that the sidelink control channel can have more idle resources for transmitting other information.

[0023] Referring to the first aspect, in a possible implementation of the first aspect, the index of the first frequency domain resource and the first sequence index are determined based on the index of the frequency domain resource of the sidelink control channel and N.

[0024] According to the above technical solution, when the frequency domain resource index of the sidelink control channel is determined, the first frequency domain resource index and / or the first sequence index can be determined, and the sidelink control channel does not need to carry additional information to indicate the first frequency domain resource index and / or the first sequence index, thereby reducing the amount of information that the sidelink control channel needs to carry so that the sidelink control channel can have more idle resources for transmitting other information.

[0025] Referring to the first aspect, in a possible implementation of the first aspect, the first frequency domain resource index and / or the first sequence index are determined based on the frequency domain resource index of the sidelink control channel and the orthogonal sequence index of the sidelink control channel.

[0026] According to the above technical solution, when the frequency domain resource index of the sidelink control channel and the orthogonal sequence index of the sidelink control channel are determined, the first frequency domain resource index and / or the first sequence index can be determined, and the sidelink control channel does not need to carry additional information to indicate the first frequency domain resource index and / or the first sequence index, thereby reducing the amount of information that the sidelink control channel needs to carry so that the sidelink control channel can have more idle resources for transmitting other information.

[0027] Referring to the first aspect, in a possible implementation of the first aspect, the index of the first frequency domain resource and the first sequence parameter are determined based on the index of the frequency domain resource of the sidelink control channel, the orthogonal sequence index of the sidelink control channel, the number M of orthogonal frequency domain resources of the sidelink control channel, and N.

[0028] According to the above technical solution, when the frequency domain resource index of the sidelink control channel and the orthogonal sequence index of the sidelink control channel are determined, the first frequency domain resource index and / or the first sequence index can be determined, and the sidelink control channel does not need to carry additional information to indicate the first frequency domain resource index and / or the first sequence index, thereby reducing the amount of information that the sidelink control channel needs to carry so that the sidelink control channel can have more idle resources for transmitting other information.

[0029] Referring to the first aspect, in a possible implementation of the first aspect, the resources of the sidelink control channel and the resources of the sidelink positioning reference signal are determined based on resource indexes.

[0030] In the above technical solutions, the resources of the sidelink control channel and the resources of the sidelink positioning reference signal may be directly indicated by resource indexes. In this way, the resources of the sidelink control channel do not need to be determined first. In other words, the resources of the sidelink positioning reference signal may be determined first, or the resources of the sidelink control channel and the resources of the sidelink positioning reference signal may be determined simultaneously. Both the resources of the sidelink control channel and the resources of the sidelink positioning reference signal are indicated by resource indexes, so that the total number of resources of the sidelink control channel and the total number of resources of the sidelink positioning reference signal may not need to be considered. This system design is more flexible and easier to implement based on protocols.

[0031] Referring to the first aspect, in a possible implementation of the first aspect, the resources of the sidelink control channel include the frequency domain resources of the sidelink control channel and the sequence parameters of the sidelink control channel; and the resources of the sidelink positioning reference signal include the frequency domain resources of the sidelink positioning reference signal and the sequence parameters of the sidelink positioning reference signal.

[0032] Referring to the first aspect, in a possible implementation of the first aspect, the maximum value of the resource index is predefined, preconfigured, or configured by the network device.

[0033] In the above technical solution, the maximum resource index is configured to determine or control the number and density of resources in a slot by using signaling, thus controlling and ensuring the capacity of parallel transmission in the whole system.

[0034] Referring to the first aspect, in a possible implementation of the first aspect, the sidelink control channel is further used to carry second indication information, the second indication information indicating the resource index.

[0035] Referring to the first aspect, in a possible implementation of the first aspect, the index of the frequency domain resource of the sidelink control channel and the orthogonal sequence index of the sidelink control channel are determined based on the resource index and the number M of orthogonal frequency domain resources of the sidelink control channel.

[0036] Referring to the first aspect, in a possible implementation of the first aspect, the index of the frequency domain resource of the sidelink control channel is determined based on the resource index, the number M of the orthogonal frequency domain resources of the sidelink control channel, and first reference information, where the first reference information includes one or more of the following information: an identifier of the first communication device, an identifier of a second communication device, and a first offset, where the first offset is a positive integer greater than or equal to 0 and less than M.

[0037] In the above technical solution, the resource of the sidelink control channel can be determined more flexibly by using the first reference information.

[0038] Referring to the first aspect, in a possible implementation example of the first aspect, an index of a second frequency domain resource and a second sequence index are determined based on the resource index and N. The second frequency domain resource is a frequency domain resource of the sidelink positioning reference signal. The second sequence index corresponds to a sequence parameter for determining the sidelink positioning reference signal.

[0039] Referring to the first aspect, in a possible implementation of the first aspect, the index of the second frequency domain resource is determined based on the resource index, N, and second reference information, where the second reference information includes at least one of the following information: the identifier of the first communication device, the identifier of the second communication device, and a second offset, where the second offset is a positive integer greater than or equal to 0 and less than N.

[0040] In the above technical solutions, the resource of the sidelink positioning reference signal can be determined more flexibly by using the second reference information.

[0041] Referring to the first aspect, in a possible implementation of the first aspect, the resource index of the SLRS is determined based on the resource index of the SLCS and the total number of resources of the SLRS.

[0042] According to the aforementioned technical solution, when both the resources of the sidelink control channel and the resources of the sidelink positioning reference signal are indicated by resource indices, a correlation between the resources of the sidelink control channel and the resources of the sidelink positioning reference signal (i.e., a relationship between resource indices of the sidelink positioning reference signal and resource indices of the sidelink control channel) may be determined.

[0043] Referring to the first aspect, in a possible implementation of the first aspect, the resource index of the sidelink positioning reference signal is determined based on the resource index of the sidelink control channel, the total number of resources of the sidelink positioning reference signal, and third reference information, where the third reference information includes at least one of the following information: the identifier of the first communication device, the identifier of the second communication device, and a third offset, where the third offset is a positive integer greater than or equal to 0 and less than T, where T is the total number of resources of the sidelink positioning reference signal.

[0044] In the above technical solution, by using the third reference information, the correlation between the resources of the sidelink control channel and the resources of the sidelink positioning reference signal can be determined more flexibly.

[0045] Referring to the first aspect, in a possible implementation of the first aspect, the sidelink control channel is a physical sidelink control channel PSCCH.

[0046] According to a second aspect, an embodiment of the present application provides a method for transmitting a sidelink positioning reference signal (SRS). The method includes: a second communication device receiving a SRS control channel within a slot; the second communication device determining at least one of the following information: a frequency domain resource of the SRS and a sequence parameter of the SRS, where the information is associated with the SRS control channel; and the second communication device receiving the SRS within the slot based on the information.

[0047] In the above technical solutions, the information (specifically, the frequency domain resource of the SLRM and / or the sequence parameter of the SLRM) is associated with the SLCH. In this way, after receiving the SLCH, the second communication device can obtain the resource of the SLRM based on the correlation between the information and the SLCH, and then obtain the SLRM on the resource of the SLRM.

[0048] Referring to the second aspect, in a possible implementation of the second aspect, the sidelink control channel and the sidelink positioning reference signal are received in the same slot.

[0049] In the above technical solution, the sidelink control channel and the sidelink positioning reference signal correlated with the information are received within the same slot. In this way, the second communication device can acquire the information, the sidelink control channel, and the sidelink positioning reference signal within the same slot, without needing to acquire the information in advance in another slot. This can save time-domain resources. Furthermore, if the information, the sidelink control channel, and the sidelink positioning reference signal are received within different slots, the information needs to additionally indicate the slot in which the received frequency-domain resources and / or sequence parameters of the sidelink positioning reference signal are included. If the information, the sidelink control channel, and the sidelink positioning reference signal are received within the same slot, the second communication device may directly determine the frequency-domain resources and / or sequence parameters of the sidelink positioning reference signal within the slot based on the information acquired within the slot. This reduces the amount of information the first communication device needs to transmit, and correspondingly, reduces the amount of information the second communication device needs to receive, thereby saving air interface resources.

[0050]

[0023] Referring to the second aspect, in a possible implementation of the second aspect, the sidelink control channel is located before the sidelink positioning reference signal within the slot.

[0051] Since the sidelink control channel is located before the sidelink positioning reference signal, the second communication device may first obtain information associated with the sidelink control channel to determine frequency domain resources and / or sequence parameters of the sidelink positioning reference signal.

[0052] Referring to the second aspect, in a possible implementation example of the second aspect, the resources of the sidelink positioning reference signal in each symbol are Y resource elements RE out of Y×N resource elements RE, one out of every N RE is occupied by the sidelink positioning reference signal, Y is a number greater than 0 and N is a positive integer.

[0053] If N is a positive integer greater than or equal to 2, the frequency domain resources of each symbol may be multiplexed for use by N communication devices. In this way, multiple communication devices may transmit sidelink positioning reference signals by using the same time domain resource.

[0054] With reference to the second aspect, in possible implementations of the second aspect, the information being associated with a sidelink control channel comprises: the information being carried in the sidelink control channel; and / or the information being determined based on frequency domain resources and / or sequence parameters of the sidelink control channel.

[0055] If the information is carried in the sidelink control channel, the resource locations of the sidelink control channel can be decoupled from the resource locations of the sidelink positioning reference signal. This helps to find good resources for the sidelink control channel and good resources for the sidelink positioning reference signal. If the information is determined based on frequency domain resources and / or sequence parameters of the sidelink control channel, the amount of information that the sidelink control channel needs to carry can be reduced, and therefore the sidelink control channel can have more idle resources for transmitting other information.

[0056] Referring to the second aspect, in a possible implementation of the second aspect, the information further includes sequence parameters of a sidelink control channel.

[0057] If the information includes sequence parameters for the sidelink control channels, it indicates that different sequences are used to transmit the sidelink control channels on the same frequency domain resources. Specifically, the sidelink control channels are transmitted in frequency division and code division mode, which increases the capacity of the sidelink control channels and improves the transmission performance of the system.

[0058] Referring to the second aspect, in a possible implementation of the second aspect, the sequence parameters of the sidelink control channel include at least one of the following information: a cyclic shift CS value of the sidelink control channel, a root sequence index of the sidelink control channel, or an orthogonal sequence index of the sidelink control channel.

[0059] With reference to the second aspect, in a possible implementation example of the second aspect, the sequence parameters of the sidelink positioning reference signal comprise at least one of the following information: a cyclic shift CS value of the sidelink positioning reference signal, a root sequence index of the sidelink positioning reference signal, an orthogonal sequence index of the sidelink positioning reference signal, or a parameter for generating an initial value of the sequence of the sidelink positioning reference signal.

[0060] If the information includes sequence parameters of the sidelink positioning reference signals, it indicates that different sequences are used for transmitting the sidelink positioning reference signals on the same frequency domain resources. Specifically, the sidelink positioning reference signals are transmitted in frequency division and code division mode, which increases the capacity of the sidelink positioning reference signals and improves the system transmission performance.

[0061] Referring to the second aspect, in a possible implementation example of the second aspect, a first frequency domain resource index and / or a first sequence index is determined based on an index of the frequency domain resource of the sidelink control channel, the first frequency domain resource being a frequency domain resource of the sidelink positioning reference signal, and the first sequence index corresponds to a sequence parameter for determining the sidelink positioning reference signal.

[0062] According to the above technical solution, when the frequency domain resource index of the sidelink control channel is determined, the first frequency domain resource index and / or the first sequence index can be determined, and the sidelink control channel does not need to carry additional information to indicate the first frequency domain resource index and / or the first sequence index, thereby reducing the amount of information that the sidelink control channel needs to carry so that the sidelink control channel can have more idle resources for transmitting other information.

[0063] Referring to the second aspect, in a possible implementation of the second aspect, the index of the first frequency domain resource and the first sequence index are determined based on the index of the frequency domain resource of the sidelink control channel and N.

[0064] According to the above technical solution, when the frequency domain resource index of the sidelink control channel is determined, the first frequency domain resource index and / or the first sequence index can be determined, and the sidelink control channel does not need to carry additional information to indicate the first frequency domain resource index and / or the first sequence index, thereby reducing the amount of information that the sidelink control channel needs to carry so that the sidelink control channel can have more idle resources for transmitting other information.

[0065] Referring to the second aspect, in a possible implementation of the second aspect, the index of the first frequency domain resource and / or the first sequence index is determined based on the index of the frequency domain resource of the sidelink control channel and the orthogonal sequence index of the sidelink control channel.

[0066] According to the above technical solution, when the frequency domain resource index of the sidelink control channel and the orthogonal sequence index of the sidelink control channel are determined, the first frequency domain resource index and / or the first sequence index can be determined, and the sidelink control channel does not need to carry additional information to indicate the first frequency domain resource index and / or the first sequence index, thereby reducing the amount of information that the sidelink control channel needs to carry so that the sidelink control channel can have more idle resources for transmitting other information.

[0067] Referring to the second aspect, in a possible implementation of the second aspect, the index of the first frequency domain resource and the first sequence parameter are determined based on the index of the frequency domain resource of the sidelink control channel, the orthogonal sequence index of the sidelink control channel, the number M of orthogonal frequency domain resources of the sidelink control channel, and N.

[0068] According to the above technical solution, when the frequency domain resource index of the sidelink control channel and the orthogonal sequence index of the sidelink control channel are determined, the first frequency domain resource index and / or the first sequence index can be determined, and the sidelink control channel does not need to carry additional information to indicate the first frequency domain resource index and / or the first sequence index, thereby reducing the amount of information that the sidelink control channel needs to carry so that the sidelink control channel can have more idle resources for transmitting other information.

[0069] Referring to the second aspect, in a possible implementation of the second aspect, the resources of the sidelink control channel and the resources of the sidelink positioning reference signal are determined based on resource indexes.

[0070] In the above technical solutions, the resources of the sidelink control channel and the resources of the sidelink positioning reference signal may be directly indicated by resource indexes. In this way, the resources of the sidelink control channel do not need to be determined first. In other words, the resources of the sidelink positioning reference signal may be determined first, or the resources of the sidelink control channel and the resources of the sidelink positioning reference signal may be determined simultaneously. Both the resources of the sidelink control channel and the resources of the sidelink positioning reference signal are indicated by resource indexes, so that the total number of resources of the sidelink control channel and the total number of resources of the sidelink positioning reference signal may not need to be considered. This system design is more flexible and easier to implement based on protocols.

[0071] Referring to the second aspect, in a possible implementation of the second aspect, the resources of the sidelink control channel include the frequency domain resources of the sidelink control channel and the sequence parameters of the sidelink control channel; and the resources of the sidelink positioning reference signal include the frequency domain resources of the sidelink positioning reference signal and the sequence parameters of the sidelink positioning reference signal.

[0072] Referring to the second aspect, in a possible implementation of the second aspect, the maximum value of the resource index is predefined, preconfigured, or configured by the network device.

[0073] In the above technical solution, the maximum resource index is configured to determine or control the number and density of resources in a slot by using signaling, thus controlling and ensuring the capacity of parallel transmission in the whole system.

[0074] Referring to the second aspect, in a possible implementation of the second aspect, the sidelink control channel is further used to carry second indication information, the second indication information indicating the resource index.

[0075] Referring to the second aspect, in a possible implementation of the second aspect, the index of the frequency domain resource of the sidelink control channel and the orthogonal sequence index of the sidelink control channel are determined based on the resource index and the number M of orthogonal frequency domain resources of the sidelink control channel.

[0076] Referring to the second aspect, in a possible implementation of the second aspect, the index of the frequency domain resource of the sidelink control channel is determined based on the resource index, the number M of the orthogonal frequency domain resources of the sidelink control channel, and first reference information, where the first reference information includes one or more of the following information: an identifier of the first communication device, an identifier of the second communication device, and a first offset, where the first offset is a positive integer greater than or equal to 0 and less than M.

[0077] In the above technical solution, the resource of the sidelink control channel can be determined more flexibly by using the first reference information.

[0078] Referring to the second aspect, in a possible implementation example of the second aspect, an index of a second frequency domain resource and a second sequence index are determined based on the resource index and N. The second frequency domain resource is a frequency domain resource of the sidelink positioning reference signal. The second sequence index corresponds to a sequence parameter for determining the sidelink positioning reference signal.

[0079] Referring to the second aspect, in a possible implementation of the second aspect, the index of the second frequency domain resource is determined based on the resource index, N, and second reference information, where the second reference information includes at least one of the following information: the identifier of the first communication device, the identifier of the second communication device, and a second offset, where the second offset is a positive integer greater than or equal to 0 and less than N.

[0080] In the above technical solutions, the resource of the sidelink positioning reference signal can be determined more flexibly by using the second reference information.

[0081] Referring to the second aspect, in a possible implementation of the second aspect, the resource index of the SLRS is determined based on the resource index of the SLCS and the total number of resources of the SLRS.

[0082] According to the aforementioned technical solution, when both the resources of the sidelink control channel and the resources of the sidelink positioning reference signal are indicated by resource indices, a correlation between the resources of the sidelink control channel and the resources of the sidelink positioning reference signal (i.e., a relationship between resource indices of the sidelink positioning reference signal and resource indices of the sidelink control channel) may be determined.

[0083] Referring to the second aspect, in a possible implementation of the second aspect, the resource index of the sidelink positioning reference signal is determined based on the resource index of the sidelink control channel, the total number of resources of the sidelink positioning reference signal, and third reference information, where the third reference information comprises at least one of the following information: the identifier of the first communication device, the identifier of the second communication device, and a third offset, where the third offset is a positive integer greater than or equal to 0 and less than T, where T is the total number of resources of the sidelink positioning reference signal.

[0084] In the above technical solution, by using the third reference information, the correlation between the resources of the sidelink control channel and the resources of the sidelink positioning reference signal can be determined more flexibly.

[0085] Referring to the second aspect, in a possible implementation of the second aspect, the sidelink control channel is a physical sidelink control channel PSCCH.

[0086] According to a third aspect, an embodiment of the present application provides a method for transmitting sidelink positioning information, comprising: a first communication device determining configuration information, the configuration information indicating at least one of the following information: a number of symbols occupied by sidelink control information, a frequency-domain bandwidth occupied by the sidelink control information, a number of symbols occupied by sidelink positioning reference signals, and a mapping interval of the sidelink positioning reference signals in the frequency domain. The first device transmits the sidelink positioning information within a slot, the sidelink positioning information being generated based on the configuration information and including the sidelink control information and the sidelink positioning reference signals.

[0087] In the above technical solutions, the sidelink control information and the sidelink positioning reference signal are transmitted jointly, which allows the sidelink positioning reference signal functionality to operate independently, i.e., the sidelink positioning reference signal does not have to depend on other scheduling signaling or communication functionality.

[0088] Referring to the third aspect, in a possible implementation of the third aspect, the sidelink control information is located before the sidelink positioning reference signal.

[0089] Since the sidelink control channel is located before the sidelink positioning reference signal, if the sidelink control channel includes information related to the sidelink positioning reference signal, the receiving end device may obtain this information first.

[0090] Referring to the third aspect, in a possible implementation of the third aspect, the sidelink control information and the sidelink positioning reference signal are transmitted in the same slot.

[0091] The first communication device transmits the SL control information and the SL positioning reference signal to the receiving end device in the same slot, rather than transmitting the SL control information and the SL positioning reference signal to the receiving end device separately in different slots, thereby saving time domain resources.

[0092] Referring to the third aspect, in possible implementation examples of the third aspect, a slot comprises 14 symbols, the number of symbols occupied by the sidelink control information is 2 and the number of symbols occupied by the sidelink positioning reference signal is 10; or a slot comprises 14 symbols, the number of symbols occupied by the sidelink control information is 1 and the number of symbols occupied by the sidelink positioning reference signal is 11; or a slot comprises 14 symbols, the number of symbols occupied by the sidelink control information is 4 and the number of symbols occupied by the sidelink positioning reference signal is 8; or a slot comprises 7 symbols, the number of symbols occupied by the sidelink control information is 1 and the number of symbols occupied by the sidelink positioning reference signal is 1 The number of symbols occupied by the SLCI is two and the number of symbols occupied by the SLRS is three; or the slot contains seven symbols, the number of symbols occupied by the SLCI is one and the number of symbols occupied by the SLRS is four; or the slot contains seven symbols, the number of symbols occupied by the SLCI is three and the number of symbols occupied by the SLRS is two; or the slot contains seven symbols, the number of symbols occupied by the SLCI is four and the number of symbols occupied by the SLRS is one.

[0093] In the above technical solutions, different slot structures are provided for transmitting sidelink positioning reference signals. In this way, the slot structure for transmitting sidelink positioning reference signals can be flexibly selected according to requirements. Furthermore, in some slot structures, sidelink control information occupies a small number of symbols. In this way, more symbols can be used for transmitting sidelink positioning reference signals.

[0094] Referring to the third aspect, in a possible implementation of the third aspect, a slot comprises a first time domain resource and a second time domain resource, wherein the first time domain resource is used to transmit data and the second time domain resource is used to transmit a sidelink positioning reference signal, and the first time domain resource and the second time domain resource are separated by at least one empty symbol.

[0095] In the above technical solution, the data and the positioning signal are transmitted within the same slot, the coordination between the communication and the positioning is efficiently implemented, and the transmission efficiency for the positioning signal is improved. Furthermore, the first time domain resource and the second time domain resource are separated by an empty symbol so that the receiver can distinguish between the two time domain resources.

[0096] Referring to the third aspect, in a possible implementation of the third aspect, the last symbol of the second time domain resource is an empty symbol.

[0097] If the second time domain resource is located at the end of a slot, the empty symbol may be used to distinguish the slot from the next slot. Alternatively, if a time domain resource for transmitting other information exists after the second time domain resource, the empty symbol may alternatively be used to distinguish the second time domain resource from the time domain resource.

[0098] Referring to the third aspect, in a possible implementation of the third aspect, the information carried in the first symbol of a slot is the same as the information carried in the second symbol of the slot.

[0099] In the above technical solution, the first symbol of a slot may be used for automatic gain control.

[0100] Referring to the third aspect, in a possible implementation of the third aspect, the slot further includes a third time domain resource, the third time domain resource and the first time domain resource being separated by at least one empty symbol, and the third time domain resource being used to transmit feedback information.

[0101] In the above technical solution, data, positioning signals, and feedback information are transmitted within the same slot, which can efficiently implement coordination between communication and positioning and improve transmission efficiency for positioning signals. Furthermore, the first time domain resource and the third time domain resource are separated by an empty symbol so that a receiver can distinguish between the two time domain resources.

[0102] With reference to the third aspect, in a possible implementation example of the third aspect, the first time domain resource is further used for transmitting first sidelink control information, the first sidelink control information indicating the number of symbols occupied by the sidelink control information and / or the frequency domain bandwidth occupied by the sidelink control information.

[0103] With reference to the third aspect, in a possible implementation example of the third aspect, the first time domain resource is further used for transmitting second sidelink control information, the second sidelink control information indicating the number of symbols occupied by the sidelink positioning reference signal and / or a mapping interval of the sidelink positioning reference signal in the frequency domain.

[0104] The receiving end device may obtain resource information of the sidelink positioning reference signal based on the second sideline control information, and obtain the sidelink positioning reference signal on the corresponding resource.

[0105] Referring to the third aspect, in a possible implementation example of the third aspect, the SLRS carries third SL control information, which indicates the number of symbols occupied by the SLRS and / or a mapping interval of the SLRS in the frequency domain.

[0106] Referring to the third aspect, in possible implementations of the third aspect, the frequency domain units for sidelink control information are obtained through subchannel-based contiguous mapping or interlace-based discrete resource mapping.

[0107] The sidelink control information is transmitted in an interlaced manner, which allows the use of unlicensed spectrum for the channels carrying the sidelink control information.

[0108] Referring to the third aspect, in a possible implementation of the third aspect, the frequency domain bandwidth occupied by the sidelink control information is K×φ frequency domain resources, where K is a number greater than 0 and φ is a positive integer greater than or equal to 1. A unit of frequency domain resource includes a physical resource block, a subchannel, or an interlace.

[0109] With reference to the third aspect, in possible implementations of the third aspect, the number of symbols occupied by the sidelink control information is 1 and K is equal to 2; or the number of symbols occupied by the sidelink control information is 2 and K is equal to 1; or the number of symbols occupied by the sidelink control information is 4 and K is equal to 1 / 2.

[0110] Referring to the third aspect, in a possible implementation example of the third aspect, the resources of the sidelink positioning reference signals in each symbol are Y REs out of Y×N REs, where there is one sidelink positioning reference signal for every N REs, Y is a number greater than 0, and N is a positive integer.

[0111] With reference to the third aspect, in a possible implementation of the third aspect, the value of N is less than or equal to the number of symbols occupied by the sidelink positioning reference signal.

[0112] Referring to the third aspect, in a possible implementation example of the third aspect, the number of symbols occupied by the sidelink positioning reference signal L is greater than N and the mapping of the sidelink positioning reference signal to time domain resources is a repetition of N symbols for the sidelink positioning reference signal.

[0113] Referring to the third aspect, in a possible implementation of the third aspect, the configuration information is represented in a resource pool.

[0114] Referring to the third aspect, in a possible implementation of the third aspect, the resources of the sidelink control information are related to the resources of the sidelink positioning reference signals.

[0115] With reference to the third aspect, in possible implementation examples of the third aspect, the fact that the resources of the SLCR are related to the resources of the SLCR includes that the resources of the SLCR are indicated by the indication information and the SLCR includes the indication information; or the resources of the SLCR are determined based on frequency domain resources and / or code resources of the SLCR.

[0116] According to a fourth aspect, an embodiment of the present application provides a method for transmitting sidelink positioning information. The method includes: a second communication device receiving sidelink positioning information within a slot, the sidelink positioning information being generated based on configuration information, the sidelink positioning information including sidelink control information and sidelink positioning reference signals, the configuration information indicating at least one of the following information: a number of symbols occupied by the sidelink control information, a frequency-domain bandwidth occupied by the sidelink control information, a number of symbols occupied by the sidelink positioning reference signals, and a mapping interval of the sidelink positioning reference signals in the frequency domain. The second communication device performs measurements on the sidelink positioning reference signals to obtain measurement results.

[0117] In the above technical solutions, the sidelink control information and the sidelink positioning reference signal are transmitted jointly, which allows the sidelink positioning reference signal functionality to operate independently, i.e., the sidelink positioning reference signal does not have to depend on other scheduling signaling or communication functionality.

[0118] With reference to the fourth aspect, in a possible implementation of the fourth aspect, the sidelink control information is located in the slot before the sidelink positioning reference signal.

[0119] Since the sidelink control channel is located before the sidelink positioning reference signal, if the sidelink control information includes information related to the sidelink positioning reference signal, the second communication device may obtain said information first.

[0120] Referring to the fourth aspect, in a possible implementation of the fourth aspect, the sidelink control information and the sidelink positioning reference signal are received in the same slot.

[0121] The second communication device may receive the SLCI and the SLPOSS in the same slot, rather than having to receive them separately in different slots, thereby saving time domain resources.

[0122] With reference to the fourth aspect, in possible implementation examples of the fourth aspect, a slot comprises 14 symbols, the number of symbols occupied by the sidelink control information is 2 and the number of symbols occupied by the sidelink positioning reference signal is 10; or a slot comprises 14 symbols, the number of symbols occupied by the sidelink control information is 1 and the number of symbols occupied by the sidelink positioning reference signal is 11; or a slot comprises 14 symbols, the number of symbols occupied by the sidelink control information is 4 and the number of symbols occupied by the sidelink positioning reference signal is 8; or a slot comprises 7 symbols, the number of symbols occupied by the sidelink control information is 1 and the number of symbols occupied by the sidelink positioning reference signal is 1 The number of symbols occupied by the SLCI is two and the number of symbols occupied by the SLRS is three; or the slot contains seven symbols, the number of symbols occupied by the SLCI is one and the number of symbols occupied by the SLRS is four; or the slot contains seven symbols, the number of symbols occupied by the SLCI is three and the number of symbols occupied by the SLRS is two; or the slot contains seven symbols, the number of symbols occupied by the SLCI is four and the number of symbols occupied by the SLRS is one.

[0123] In the above technical solutions, different slot structures are provided for transmitting sidelink positioning reference signals. In this way, the slot structure for transmitting sidelink positioning reference signals can be flexibly selected according to requirements. Furthermore, in some slot structures, sidelink control information occupies a small number of symbols. In this way, more symbols can be used for transmitting sidelink positioning reference signals.

[0124] Referring to the fourth aspect, in a possible implementation example of the fourth aspect, a slot comprises a first time domain resource and a second time domain resource, wherein the first time domain resource is used to receive data and the second time domain resource is used to receive a sidelink positioning reference signal, and wherein the first time domain resource and the second time domain resource are separated by at least one free symbol.

[0125] In the above technical solution, the data and the positioning signal are transmitted within the same slot, the coordination between the communication and the positioning is efficiently implemented, and the transmission efficiency for the positioning signal is improved. Furthermore, the first time domain resource and the second time domain resource are separated by an empty symbol so that the receiver can distinguish between the two time domain resources.

[0126] Referring to the fourth aspect, in a possible implementation of the fourth aspect, the last symbol of the second time domain resource is an empty symbol.

[0127] If the second time domain resource is located at the end of a slot, the empty symbol may be used to distinguish the slot from the next slot. Alternatively, if a time domain resource for transmitting other information exists after the second time domain resource, the empty symbol may alternatively be used to distinguish the second time domain resource from the time domain resource.

[0128] Referring to the fourth aspect, in a possible implementation of the fourth aspect, the information carried in the first symbol of a slot is the same as the information carried in the second symbol of the slot.

[0129] In the above technical solution, the first symbol of a slot may be used for automatic gain control.

[0130] Referring to the fourth aspect, in a possible implementation example of the fourth aspect, the slot further includes a third time domain resource, the third time domain resource and the first time domain resource being separated by at least one empty symbol, and the third time domain resource being used to receive feedback information.

[0131] In the above technical solution, data, positioning signals, and feedback information are transmitted within the same slot, which can efficiently implement coordination between communication and positioning and improve transmission efficiency for positioning signals. Furthermore, the first time domain resource and the third time domain resource are separated by an empty symbol so that a receiver can distinguish between the two time domain resources.

[0132] With reference to the fourth aspect, in a possible implementation example of the fourth aspect, the first time domain resource is further used for receiving first sidelink control information, the first sidelink control information indicating the number of symbols occupied by the sidelink control information and / or the frequency domain bandwidth occupied by the sidelink control information.

[0133] With reference to the fourth aspect, in a possible implementation example of the fourth aspect, the first time domain resource is further used for receiving second sidelink control information, the second sidelink control information indicating the number of symbols occupied by the sidelink positioning reference signal and / or a mapping interval of the sidelink positioning reference signal in the frequency domain.

[0134] The receiving end device may obtain resource information of the sidelink positioning reference signal based on the second sideline control information, and obtain the sidelink positioning reference signal on the corresponding resource.

[0135] Referring to the fourth aspect, in a possible implementation example of the fourth aspect, the SLRS carries third SL control information, which indicates the number of symbols occupied by the SLRS and / or a mapping interval of the SLRS in the frequency domain.

[0136] Referring to the fourth aspect, in possible implementations of the fourth aspect, the frequency domain units for sidelink control information are obtained through subchannel-based contiguous mapping or interlace-based discrete resource mapping.

[0137] The sidelink control information is transmitted in an interlaced manner, which allows the use of unlicensed spectrum for the channels carrying the sidelink control information.

[0138] Referring to the fourth aspect, in a possible implementation of the fourth aspect, the frequency domain bandwidth occupied by the sidelink control information is K×φ frequency domain resources, where K is a number greater than 0 and φ is a positive integer greater than or equal to 1. A unit of frequency domain resource includes a physical resource block, a subchannel, or an interlace.

[0139] With reference to the fourth aspect, in possible implementations of the fourth aspect, the number of symbols occupied by the sidelink control information is 1 and K is equal to 2; or the number of symbols occupied by the sidelink control information is 2 and K is equal to 1; or the number of symbols occupied by the sidelink control information is 4 and K is equal to 1 / 2.

[0140] Referring to the fourth aspect, in a possible implementation example of the fourth aspect, the resources of sidelink positioning reference signals in each symbol are Y REs out of Y×N REs, where there is one sidelink positioning reference signal for every N REs, Y is a number greater than 0, and N is a positive integer.

[0141] With reference to the fourth aspect, in a possible implementation of the fourth aspect, the value of N is less than or equal to the number of symbols occupied by the sidelink positioning reference signal.

[0142] With reference to the fourth aspect, in a possible implementation example of the fourth aspect, the number of symbols occupied by the sidelink positioning reference signal, L, is greater than N and the mapping of the sidelink positioning reference signal to the time domain resources is a repetition of N symbols for the sidelink positioning reference signal.

[0143] Referring to the fourth aspect, in a possible implementation of the fourth aspect, the configuration information is represented in a resource pool.

[0144] Referring to the fourth aspect, in a possible implementation of the fourth aspect, the resources of the sidelink control information are related to the resources of the sidelink positioning reference signals.

[0145] With reference to the fourth aspect, in possible implementation examples of the fourth aspect, the resource of the SLCR being related to the resource of the SLCR comprises: the resource of the SLCR being indicated by the indication information and the SLCR comprising the indication information; or the resource of the SLCR being determined based on frequency domain resources and / or code resources of the SLCR.

[0146] According to a fifth aspect, an embodiment of the present application provides a method for transmitting a sidelink positioning reference signal. The method comprises a first communication device determining first sequence parameters, where the first sequence parameters include at least one of the following: resources of a sidelink control channel, information carried in the sidelink control channel, and resources of the sidelink positioning reference signal, the first sequence parameters being used to generate the sidelink positioning reference signal. The first communication device transmits the sidelink control channel and the sidelink positioning reference signal within a slot.

[0147] In the above technical solution, the first sequence parameter is information that has a correlation with information (a sidelink control channel and a sidelink positioning reference signal) transmitted by the first communication device. In this way, the sidelink positioning reference signal determined based on the first sequence parameter is better correlated with information that the first communication device needs to transmit.

[0148] Referring to the fifth aspect, in a possible implementation example of the fifth aspect, the frequency domain resources of the sidelink positioning reference signals are Y REs out of Y×N REs, where there is one sidelink positioning reference signal for every N REs, Y is a number greater than 0, and N is a positive integer.

[0149] If N is a positive integer greater than or equal to 2, the frequency domain resources of each symbol may be multiplexed for use by N communication devices. In this way, multiple communication devices may transmit sidelink positioning reference signals by using the same time domain resource.

[0150] Referring to the fifth aspect, in a possible implementation example of the fifth aspect, the resources of the sidelink positioning reference signals include RE offsets of the sidelink positioning reference signals, the RE offsets indicating the position of the sidelink positioning reference signals for every N REs.

[0151] In the above technical solution, the sidelink positioning reference signal is generated by using resource information of the sidelink positioning reference signal, so that the resource information can be checked during transmission of the positioning reference signal to perform correct transmission.

[0152] Referring to the fifth aspect, in possible implementation examples of the fifth aspect, the resources of the sidelink control channel include at least one of the following: a frequency-domain resource index of the sidelink control channel, a sequence parameter index of the sidelink control channel, or a joint resource index of the sidelink control channel, where the joint resource index is determined based on the frequency-domain resource index of the sidelink control channel and the sequence parameter index of the control channel.

[0153] In the above technical solution, the sidelink positioning reference signal is generated by using frequency domain resource information of the sidelink control channel, so that the frequency domain resource information can be checked during transmission of the positioning reference signal to perform correct transmission.

[0154] Referring to the fifth aspect, in possible implementation examples of the fifth aspect, the index of the sequence parameters of the sidelink control channel comprises at least one of the following: an orthogonal code index of the sequence parameters of the sidelink control channel, a cyclic shift index of the sequence parameters of the sidelink control channel, and a root sequence number index of the sequence parameters of the sidelink control channel.

[0155] In the above technical solution, the sidelink positioning reference signal is generated by using a sequence parameter of the sidelink control channel, so that information about the sequence parameter can be checked during transmission of the positioning reference signal to perform correct transmission.

[0156] Referring to the fifth aspect, in a possible implementation of the fifth aspect, a joint resource index i r is the following formula: r =i f ×M s +i s or the joint resource index ir is the following formula: r =i s ×M f +i f where i s =0,1,...,M s -1 and i f =0,1,...,M f -1 and M s is the number of sequence parameters of the sidelink control channel, and M f is the number of orthogonal resources for the sidelink control channel in the slot.

[0157] In the above technical solutions, the sidelink positioning reference signals are jointly generated by using frequency domain resources and sequence parameters of the sidelink control channel, so that information about the domain and sequence parameters can be checked during transmission of the positioning reference signals to perform correct transmission.

[0158] Referring to the fifth aspect, in a possible implementation example of the fifth aspect, the information carried in the sidelink control channel includes at least one of the following: an identifier of the first communication device; an identifier of the second communication device, where the second communication device is a receiving device for the positioning reference signal; indication information indicating a geographical location of the first communication device; indication information indicating a geographical location of the second communication device; and indication information for a sequence identifier, where the sequence identifier is used to generate an initial value of the sequence of the positioning reference signal.

[0159] In the aforementioned technical solution, the sidelink positioning reference signal is generated by using parameter information carried in the sidelink control channel so that the information carried during the transmission of the positioning reference signal can be checked to ensure correct transmission.

[0160] Referring to the fifth aspect, in a possible implementation example of the fifth aspect, the sequence for generating the positioning reference signal is a random sequence, and an initial value of the positioning reference signal is generated based on a first sequence parameter.

[0161] In the above technical solution, a sidelink positioning reference signal is generated by using a first sequence parameter and a random sequence, so that the first sequence parameter can be checked through detection against the random sequence during transmission of the positioning reference signal to achieve correct transmission.

[0162] Referring to the fifth aspect, in a possible implementation of the fifth aspect, the initial value c of the positioning reference signal int is the following formula:

number

[0163] In the above technical solution, an initial value of the random sequence is generated by using a first sequence parameter, so that the first sequence parameter can be checked through detection against the random sequence during transmission of the positioning reference signal to perform correct transmission, and then a sidelink positioning reference signal is generated.

[0164] Referring to the fifth aspect, in a possible implementation of the fifth aspect, the initial value c of the positioning reference signal int is the following formula:

number

[0165] In the above technical solution, an initial value of the random sequence is generated by using a first sequence parameter, so that the first sequence parameter can be checked through detection against the random sequence during transmission of the positioning reference signal to perform correct transmission, and then a sidelink positioning reference signal is generated.

[0166] Referring to the fifth aspect, in contemplated embodiments of the fifth aspect, the parameter A is represented by the following formula:

number

number

number

[0167] In the above technical solution, an initial value of the random sequence is generated by using a first sequence parameter, so that the first sequence parameter can be checked through detection against the random sequence during transmission of the positioning reference signal to perform correct transmission, and then a sidelink positioning reference signal is generated.

[0168] Referring to the fifth aspect, in a possible implementation example of the fifth aspect, the sequence for generating the sidelink positioning reference signal is a ZC sequence, and the first sequence parameter is used to generate a root sequence index of the ZC sequence and / or a cyclic shift value of the ZC sequence.

[0169] Referring to the fifth aspect, in a possible implementation of the fifth aspect, the sidelink control channel and the sidelink positioning reference signal are transmitted in the same slot.

[0170] With reference to the fifth aspect, in a possible implementation of the fifth aspect, the sidelink control channel is located before the sidelink positioning reference signal within the slot.

[0171] According to a sixth aspect, an embodiment of the present application provides a method for transmitting a sidelink positioning reference signal. The method comprises a second communication device receiving a sidelink control channel and a sidelink positioning reference signal within a slot, where the sidelink positioning reference signal is generated based on a first sequence parameter, the first sequence parameter including at least one of the following: resources of the sidelink control channel, information carried in the sidelink control channel, and resources of the sidelink positioning reference signal, the first sequence parameter being used to generate the sidelink positioning reference signal. The second communication device then performs measurements on the sidelink positioning reference signal to obtain measurement results.

[0172] In the above technical solution, the first sequence parameter is information that has a correlation with information (a sidelink control channel and a sidelink positioning reference signal) received by the second communication device. In this way, the sidelink positioning reference signal determined based on the first sequence parameter is better correlated with information required by the second communication device.

[0173] Referring to the sixth aspect, in a possible implementation example of the sixth aspect, the frequency domain resources of the sidelink positioning reference signals are Y REs out of Y×N REs, where Y is a number greater than 0 and N is a positive integer, and there is one sidelink positioning reference signal for every N REs.

[0174] If N is a positive integer greater than or equal to 2, the frequency domain resources of each symbol may be multiplexed for use by N communication devices. In this way, multiple communication devices may transmit sidelink positioning reference signals by using the same time domain resource.

[0175] Referring to the sixth aspect, in a possible implementation example of the sixth aspect, the resources of the sidelink positioning reference signals include RE offsets of the sidelink positioning reference signals, the RE offsets indicating the position of the sidelink positioning reference signals for every N REs.

[0176] In the above technical solution, the sidelink positioning reference signal is generated by using resource information of the sidelink positioning reference signal, so that the resource information can be checked during transmission of the positioning reference signal to perform correct transmission.

[0177] Referring to the sixth aspect, in possible implementation examples of the sixth aspect, the resources of the sidelink control channel include at least one of the following: a frequency-domain resource index of the sidelink control channel, a sequence parameter index of the sidelink control channel, or a joint resource index of the sidelink control channel, where the joint resource index is determined based on the frequency-domain resource index of the sidelink control channel and the sequence parameter index of the control channel.

[0178] In the above technical solution, the sidelink positioning reference signal is generated by using frequency domain resource information of the sidelink control channel, so that the frequency domain resource information can be checked during transmission of the positioning reference signal to perform correct transmission.

[0179] Referring to the sixth aspect, in possible implementation examples of the sixth aspect, the index of the sequence parameters of the sidelink control channel comprises at least one of the following: an orthogonal code index of the sequence parameters of the sidelink control channel, a cyclic shift index of the sequence parameters of the sidelink control channel, and a root sequence number index of the sequence parameters of the sidelink control channel.

[0180] In the above technical solution, the sidelink positioning reference signal is generated by using a sequence parameter of the sidelink control channel, so that information about the sequence parameter can be checked during transmission of the positioning reference signal to perform correct transmission.

[0181] Referring to the sixth aspect, in a possible implementation of the sixth aspect, a joint resource index i r is the following formula: r =i f ×M s +i s or the joint resource index i r is the following formula: r =i s ×M f +i f where i s =0,1,...,M s -1 and i f =0,1,...,M f -1 and M s is the number of parameters in the sequence parameters of the sidelink control channel, and M f is the number of orthogonal resources for the sidelink control channel in the slot.

[0182] In the above technical solutions, the sidelink positioning reference signals are jointly generated by using frequency domain resources and sequence parameters of the sidelink control channel, so that information about the domain and sequence parameters can be checked during transmission of the positioning reference signals to perform correct transmission.

[0183] Referring to the sixth aspect, in a possible implementation example of the sixth aspect, the information carried in the sidelink control channel includes at least one of the following: an identifier of the first communication device; an identifier of the second communication device, where the second communication device is a receiving device for the positioning reference signal; indication information indicating a geographical location of the first communication device; indication information indicating a geographical location of the second communication device; and indication information for a sequence identifier, where the sequence identifier is used to generate an initial value of the sequence of the positioning reference signal.

[0184] In the aforementioned technical solution, the sidelink positioning reference signal is generated by using parameter information carried in the sidelink control channel so that the information carried during the transmission of the positioning reference signal can be checked to ensure correct transmission.

[0185] Referring to the sixth aspect, in a possible implementation example of the sixth aspect, the sequence for generating the positioning reference signal is a random sequence, and an initial value of the positioning reference signal is generated based on a first sequence parameter.

[0186] In the above technical solution, a sidelink positioning reference signal is generated by using a first sequence parameter and a random sequence, so that the first sequence parameter can be checked through detection against the random sequence during transmission of the positioning reference signal to achieve correct transmission.

[0187] Referring to the sixth aspect, in a possible implementation of the sixth aspect, the initial value c of the positioning reference signal int is the following formula:

number

[0188] In the above technical solution, an initial value of the random sequence is generated by using a first sequence parameter, so that the first sequence parameter can be checked through detection against the random sequence during transmission of the positioning reference signal to perform correct transmission, and then a sidelink positioning reference signal is generated.

[0189] Referring to the sixth aspect, in a possible implementation of the sixth aspect, the initial value c of the positioning reference signal int is the following formula:

number

[0190] In the above technical solution, an initial value of the random sequence is generated by using a first sequence parameter, so that the first sequence parameter can be checked through detection against the random sequence during transmission of the positioning reference signal to perform correct transmission, and then a sidelink positioning reference signal is generated.

[0191] Referring to the sixth aspect, in contemplated embodiments of the sixth aspect, the parameter A has the following formula:

number

number

number

[0192] In the above technical solution, an initial value of the random sequence is generated by using a first sequence parameter, so that the first sequence parameter can be checked through detection against the random sequence during transmission of the positioning reference signal to perform correct transmission, and then a sidelink positioning reference signal is generated.

[0193] Referring to the sixth aspect, in a possible implementation example of the sixth aspect, the sequence for generating the sidelink positioning reference signal is a ZC sequence, and the first sequence parameter is used to generate a root sequence index of the ZC sequence and / or a cyclic shift value of the ZC sequence.

[0194] Referring to the sixth aspect, in a possible implementation of the sixth aspect, the sidelink control channel and the sidelink positioning reference signal are received in the same slot.

[0195] With reference to the sixth aspect, in a possible implementation of the sixth aspect, the sidelink control channel is located before the sidelink positioning reference signal within the slot.

[0196] According to a seventh aspect, an embodiment of the present application provides a communication device, comprising a module for implementing the first aspect or any one of the possible implementations of the first aspect.

[0197] According to an eighth aspect, an embodiment of the present application provides a communication device, comprising a module for implementing the second aspect or any one of the possible implementations of the second aspect.

[0198] According to a ninth aspect, an embodiment of the present application provides a communication device, the communication device comprising a module for implementing the third aspect or any one of the possible implementations of the third aspect.

[0199] According to a tenth aspect, an embodiment of the present application provides a communication device, the communication device comprising a module for implementing the fourth aspect or any one of the possible implementations of the fourth aspect.

[0200] According to an eleventh aspect, an embodiment of the present application provides a communication device, the communication device comprising a module for implementing the fifth aspect or any one of the possible implementations of the fifth aspect.

[0201] According to a twelfth aspect, an embodiment of the present application provides a communication device, the communication device comprising a module for implementing the sixth aspect or any one of the possible implementations of the sixth aspect.

[0202] According to a thirteenth aspect, an embodiment of the present application provides a communications device, the communications device comprising: a processor, coupled to a memory, configured to read and execute instructions and / or program code in the memory to perform the first aspect or any one of the possible implementations of the first aspect.

[0203] According to a fourteenth aspect, an embodiment of the present application provides a communications device, the communications device comprising: a processor, coupled to a memory, configured to read and execute instructions and / or program code in the memory to perform the second aspect or any one of the possible implementations of the second aspect.

[0204] According to a fifteenth aspect, an embodiment of the present application provides a communications device, the communications device comprising: a processor, coupled to a memory, configured to read and execute instructions and / or program code in the memory to perform the third aspect or any one of the possible implementations of the third aspect.

[0205] According to a sixteenth aspect, an embodiment of the present application provides a communications device, the communications device comprising: a processor, coupled to a memory, configured to read and execute instructions and / or program code in the memory to perform the fourth aspect or any one of the possible implementations of the fourth aspect.

[0206] According to a seventeenth aspect, an embodiment of the present application provides a communications device, the communications device comprising: a processor, coupled to a memory, configured to read and execute instructions and / or program code in the memory to perform the fifth aspect or any one of the possible implementations of the fifth aspect.

[0207] According to an eighteenth aspect, an embodiment of the present application provides a communications device, the communications device comprising: a processor, coupled to a memory, configured to read and execute instructions and / or program code in the memory to perform the sixth aspect or any one of the possible implementations of the sixth aspect.

[0208] According to a nineteenth aspect, an embodiment of the present application provides a chip system, the chip system comprising: a logic circuit coupled to an input / output interface and configured to transmit data through the input / output interface to perform the first aspect or any one of the possible implementations of the first aspect.

[0209] According to a twentieth aspect, an embodiment of the present application provides a chip system, the chip system comprising a logic circuit coupled to an input / output interface and configured to transmit data through the input / output interface to perform the second aspect or any one of the possible implementations of the second aspect.

[0210] According to a twenty-first aspect, an embodiment of the present application provides a chip system, the chip system comprising: a logic circuit coupled to an input / output interface and configured to transmit data through the input / output interface to perform the third aspect or any one of the possible implementations of the third aspect.

[0211] According to a twenty-second aspect, an embodiment of the present application provides a chip system, the chip system comprising: a logic circuit coupled to an input / output interface and configured to transmit data through the input / output interface to perform the fourth aspect or any one of the possible implementations of the fourth aspect.

[0212] According to a twenty-third aspect, an embodiment of the present application provides a chip system, the chip system comprising: a logic circuit coupled to an input / output interface and configured to transmit data through the input / output interface to perform the fifth aspect or any one of the possible implementations of the fifth aspect.

[0213] According to a twenty-fourth aspect, an embodiment of the present application provides a chip system, the chip system comprising a logic circuit coupled to an input / output interface and configured to transmit data through the input / output interface to perform the sixth aspect or any one of the possible implementations of the sixth aspect.

[0214] According to a twenty-fifth aspect, an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium storing program code, which, when executed on a computer, enables the computer to perform the first aspect or any one of the possible implementations of the first aspect.

[0215] According to a twenty-sixth aspect, an embodiment of the present application provides a computer-readable storage medium storing program code that, when executed on a computer, enables the computer to perform the second aspect or any one of the possible implementations of the second aspect.

[0216] According to a twenty-seventh aspect, an embodiment of the present application provides a computer-readable storage medium storing program code that, when executed on a computer, enables the computer to perform the third aspect or any one of the possible implementations of the third aspect.

[0217] According to a twenty-eighth aspect, an embodiment of the present application provides a computer-readable storage medium having stored thereon program code that, when executed on a computer, enables the computer to perform the fourth aspect or any one of the possible implementations of the fourth aspect.

[0218] According to a twenty-ninth aspect, an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium storing program code, which, when executed on a computer, enables the computer to perform the fifth aspect or any one of the possible implementations of the fifth aspect.

[0219] According to a thirtieth aspect, an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium storing program code, which, when executed on a computer, enables the computer to perform the sixth aspect or any one of the possible implementations of the sixth aspect.

[0220] According to a thirty-first aspect, an embodiment of the present application provides a computer program product, the computer program product comprising computer program code which, when executed on a computer, enables the computer to perform the first aspect or any one of the possible implementations of the first aspect.

[0221] According to a thirty-second aspect, an embodiment of the present application provides a computer program product, the computer program product comprising computer program code which, when executed on a computer, enables the computer to perform the second aspect or any one of the possible implementations of the second aspect.

[0222] According to a thirty-third aspect, an embodiment of the present application provides a computer program product, the computer program product comprising computer program code which, when executed on a computer, enables the computer to perform the third aspect or any one of the possible implementations of the third aspect.

[0223] According to a thirty-fourth aspect, an embodiment of the present application provides a computer program product, the computer program product comprising computer program code which, when executed on a computer, enables the computer to perform the fourth aspect or any one of the possible implementations of the fourth aspect.

[0224] According to a thirty-fifth aspect, an embodiment of the present application provides a computer program product, the computer program product comprising computer program code, which when executed on a computer, enables the computer to perform the fifth aspect or any one of the possible implementations of the fifth aspect.

[0225] According to a thirty-sixth aspect, an embodiment of the present application provides a computer program product, the computer program product comprising computer program code, which when executed on a computer, enables the computer to perform the sixth aspect or any one of the possible implementations of the sixth aspect. [Brief explanation of the drawings]

[0226] [Figure 1] 1 is a diagram of an application scenario 100 according to the present application. [Figure 2] 2 is a diagram of an application scenario 200 according to the present application. [Figure 3] FIG. 1 is a diagram of resources occupied by downlink positioning reference signals. [Figure 4] FIG. 1 is a diagram of resources occupied by uplink positioning reference signals. [Figure 5] 1 is a schematic flowchart of a method for transmitting sidelink positioning information according to an embodiment of the present application; [Figure 6] FIG. 10 is a diagram of slots for transmitting positioning information. [Figure 7] FIG. 10 is a diagram of another slot for transmitting positioning information. [Figure 8] FIG. 10 is a diagram of slots for transmitting positioning information. [Figure 9] FIG. 10 is a diagram of slots for transmitting positioning information. [Figure 10] FIG. 10 is a diagram of another slot for transmitting positioning information. [Figure 11] FIG. 1 is a diagram of frequency domain resources occupied by sidelink control information. [Figure 12] 1 illustrates a relationship between a first time domain resource and a second time domain resource. [Figure 13] 1 is a schematic flowchart of a method for transmitting a sidelink positioning reference signal according to an embodiment of the present application; [Figure 14] 1 illustrates the case where N is greater than M and no code division is performed for the sidelink control channel. [Figure 15] 1 illustrates the case where N is greater than M and code division is performed for the sidelink control channel. [Figure 16] 10B illustrates the case where N is smaller than M and code division is performed on the sidelink positioning reference signal. [Figure 17] N is greater than M and code division is performed for the sidelink control channel. [Figure 18] N is smaller than M, and code division is performed on the sidelink positioning reference signal. [Figure 19] FIG. 10 is a diagram of resources occupied by the sidelink control channel and the sidelink positioning reference signal. [Figure 20] 1 is a schematic flowchart of a method for transmitting a sidelink positioning reference signal according to an embodiment of the present application; [Figure 21] 1 is a block diagram of the structure of a communication device according to an embodiment of the present application; [Figure 22] FIG. 2 is a block diagram of the structure of another communication device according to an embodiment of the present application; [Figure 23] 1 is a block diagram of the structure of a communication device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0227] Hereinafter, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings.

[0228] The terms used in the following embodiments are intended to describe specific embodiments only and are not intended to limit the present application. As used in this specification and the appended claims, the singular terms "a," "an," and "the," are intended to include forms such as "one or more," unless the context clearly dictates otherwise. In the following embodiments, "at least one" and "one or more" should be further understood to mean one, two, or more. Terms such as "first," "second," and various numerals are intended to distinguish between objects for ease of description only and are not intended to limit the scope of the present application. "And / or" describes a correspondence between objects corresponding to each other and indicates that three relationships may exist. For example, "A and / or B" may indicate three cases: only A exists, only B exists, and both A and B exist, where A and B may be singular or plural. The symbol " / " typically indicates an "or" relationship between associated objects. The sequence numbers in the following processes do not imply an execution order. The execution order of the processes should be determined based on the functions and internal logic of the processes, and should not be construed as any limitation on the implementation process of the embodiments of the present application. For example, in the embodiments of the present application, terms such as "301", "401", and "501" are merely identifiers for ease of explanation and are not intended to limit the execution order of steps.

[0229] References to "one embodiment," "some embodiments," and the like described herein mean that one or more embodiments herein include a particular feature, structure, or characteristic described with reference to the embodiment. Terms such as "example," "for example," and the like are used herein to provide an example, illustration, or explanation. Any embodiment or design scheme described herein as "an example" or "for example" should not be construed as preferred or advantageous over another embodiment or design scheme. Rather, terms such as "example," "for example," and the like are intended to present the relevant concept in a particular manner. The terms "including," "comprising," and "having," and variations thereof, all mean "including, but not limited to," unless specifically emphasized otherwise. In embodiments herein, statements such as "when," "in the case that," and "when" all mean that a device performs the corresponding process of interest, but are not intended to limit the time. The above description does not necessarily imply that the device performs definitive operations during execution, nor does it imply any other limitations.

[0230] In this application, "indicating" may include directly indicating and indirectly indicating. When instruction information is described as indicating A, the above description may include that the instruction information directly indicates A or indirectly indicates A, but does not mean that the instruction information necessarily conveys A. In the embodiments of this application, descriptions such as "when...", "in the case that...", and "when" all mean that the device performs the corresponding processing of the object, and are not intended to limit the time. The above description does not necessarily mean that the device performs a definitive operation during execution, nor does it mean any other limitation.

[0231] The technical solutions in the embodiments of the present application are applicable to various communication systems, such as a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a universal mobile telecommunications system (UMTS), a worldwide interoperability for microwave access (WiMAX®) communication system, a fifth generation (5G) system, a cellular phone system (CSP), ... th generation (5G) or new radio (NR) systems, the future sixth generation (6 th The satellite communication system may be used in a non-terrestrial network (NTN) system, such as a 6G (6th generation) system, an inter-satellite communication system, and a satellite communication system. The satellite communication system includes a satellite base station and a terminal device. The satellite base station provides communication services for the terminal device. The satellite base station may also communicate with a base station. A satellite may serve as a base station or a terminal device. The satellite may be an unmanned aerial vehicle, a hot air balloon, a low-earth orbit satellite, a medium-earth orbit satellite, a high-earth orbit satellite, etc. Alternatively, the satellite may be a non-terrestrial base station, a non-terrestrial device, etc.

[0232] Embodiments of the present application may be applied to a terminal device. The terminal device may be a device providing voice / data connectivity for a user, such as a handheld device or an in-vehicle device with wireless connectivity; a device in the Internet of Vehicles communication, such as a communication terminal attached to a vehicle or a roadside unit (RSU); a communication terminal attached to an unmanned aerial vehicle; or a terminal device in an Internet of Things (IoT) system. The terminal device may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, user equipment, etc.

[0233] For example, the terminal device may be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a terminal in vehicle-to-everything (V2X), a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a cellular telephone, a cordless telephone, a session initiation protocol (SIP) telephone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a The terminal device may be a PDA (registered trademark), a handheld device with wireless communication capabilities, a computing device or another processing device connected to a wireless modem, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved public land mobile network (PLMN). The specific form of the terminal device is not limited to the embodiments of the present application.

[0234] In an embodiment of the present application, the apparatus for performing the functions of the terminal device may be the terminal device itself, or may be an apparatus that enables the terminal device to perform the functions, such as a chip system. The apparatus may be attached to the terminal device or used in combination with the terminal device. In an embodiment of the present application, the chip system may include a chip, or may include a chip and other discrete components.

[0235] The technical solutions in the embodiments of the present application may also be applied to an access network device. The access network device may be a device that can connect a terminal device to a wireless network. The access network device may also be referred to as a radio access network (RAN) node, a radio access network device, or a network device. For example, the access network device may be a base station.

[0236] In the embodiments of the present application, the base station may broadly cover or be replaced with any of the following names: for example, a NodeB, an evolved NodeB (eNB), a next generation NodeB (gNB), a relay station, an access point, a transmitting and receiving point (TRP), a transmitting point (TP), a master station (MeNB), a secondary station (SeNB), a multi-standard radio (MSR) node, a home base station, a network controller, an access node, a radio node, an access point (AP), a transmitting node, a transceiver node, a baseband unit (BBU), a remote radio unit (RRU), an active antenna unit (AAU), a remote radio head (RRH), a central unit (CU), a distributed unit (DU), and a positioning node. The base station may be a macro base station, a micro base station, a relay node, a donor node, etc., or a combination thereof. The base station may alternatively be a communication module, modem, or chip located in any of the aforementioned devices or apparatuses. The base station may alternatively be a network-side device in a 6G network, a device performing the functions of a base station in future communication systems, etc. The base station may support networks of the same access technology or different access technologies.

[0237] A base station may be fixed or mobile. For example, a helicopter or unmanned aerial vehicle may be configured as a mobile base station, and one or more cells may move based on the location of the mobile base station. In another example, a helicopter or unmanned aerial vehicle may be configured as a device for communicating with another base station.

[0238] The positioning management device is a network-side device for determining positioning information of a terminal device, and may be a location management function (LMF) entity, an evolved serving mobile location center (E-SMLC), or another device that can be used to determine positioning information of a terminal device.

[0239] The specific technology used by the access network device and the specific device configuration are not limited to the embodiments of this application.

[0240] To facilitate understanding of the embodiments of the present application, FIGS. 1 and 2 are first used as examples to describe application scenarios to which the embodiments of the present application are applicable.

[0241] 1 is a diagram of an application scenario 100 according to the present application. As shown in FIG. 1, the application scenario 100 mainly relates to a sidelink (SL) positioning scenario. The positioning scenario may include a terminal device 110, a terminal device 120, and a positioning management device 130. The terminal device 110 may be a terminal device to be positioned, and the terminal device 120 may be another terminal device or a roadside unit. It should be understood that in the positioning scenario, positioning may be performed between the terminal device 110 and the terminal device 120 through a direct communication interface (i.e., a PC5 interface).

[0242] In a possible implementation, the terminal device 110 has at least two antennas, and the terminal device 120 also has at least two antennas. The terminal device 120 transmits reference signals on the at least two antennas to the terminal device 110. The terminal device 110 receives the reference signals on the at least two antennas and performs measurements on the reference signals.

[0243] In some embodiments, the terminal device 110 may determine the position and / or attitude of the terminal device 110 based on the measurement information.

[0244] In some embodiments, the terminal device 110 may transmit information obtained through measurements to the terminal device 120, and the terminal device 120 determines the position and / or attitude of the terminal device 110 based on the received measurement information.

[0245] In some embodiments, the terminal device 110 may transmit information obtained through measurements to the positioning management device 130, and the positioning management device 130 determines the position and / or attitude of the terminal device 110 based on the received measurement information.

[0246] In a possible embodiment, the terminal device 110 may have at least two antennas, and the terminal device 120 may have at least two terminal devices. The at least two terminal devices included in the terminal device 120 each transmit a reference signal to the terminal device 110 on the same antenna of the terminal device. The terminal device 110 may receive the reference signal on a different antenna and perform measurements on the reference signal.

[0247] In some embodiments, the terminal device 110 may determine the position and / or attitude of the terminal device 110 based on the measurement information.

[0248] In some embodiments, the terminal device 110 may transmit information obtained through measurements to the terminal device 120, and the terminal device 120 determines the position and / or attitude of the terminal device 110 based on the received measurement information.

[0249] In some embodiments, the terminal device 110 may transmit information obtained through measurements to the positioning management device 130, and the positioning management device 130 determines the position and / or attitude of the terminal device 110 based on the received measurement information.

[0250] In a possible implementation, the terminal device 110 has at least two antennas, and the terminal device 120 also has at least two antennas. The terminal device 110 transmits reference signals on the at least two antennas to the terminal device 120. The terminal device 120 receives the reference signals on the at least two antennas and performs measurements on the reference signals.

[0251] In some embodiments, the terminal device 120 may determine the position and / or attitude of the terminal device 110 based on the measurement information.

[0252] In some embodiments, the terminal device 120 may transmit information obtained through measurements to the terminal device 110, and the terminal device 110 determines the position and / or attitude of the terminal device 110 based on the received measurement information.

[0253] In some embodiments, the terminal device 120 may transmit information obtained through measurements to the positioning management device 130, and the positioning management device 130 determines the position and / or attitude of the terminal device 110 based on the received measurement information.

[0254] In a possible embodiment, the terminal device 110 may have at least two antennas, and the terminal device 120 may have at least two terminal devices. The terminal device 110 transmits a reference signal to the terminal device 120 on the at least two antennas. The at least two terminal devices included in the terminal device 120 each receive the reference signal on the same antenna and perform measurements on the reference signal.

[0255] In some embodiments, any device included in the terminal device 120 or at least two devices included in the terminal device 120 may determine the position and / or attitude of the terminal device 110 based on the measurement information.

[0256] In some embodiments, at least two of the terminal devices 120 may transmit information obtained through measurements to the terminal device 110, and the terminal device 110 determines the position and / or attitude of the terminal device 110 based on the received measurement information.

[0257] In some embodiments, at least two of the terminal devices 120 may transmit information obtained through measurements to the positioning management device 130, and the positioning management device 130 determines the position and / or attitude of the terminal device 110 based on the received measurement information.

[0258] In a possible embodiment, the terminal device 110 has at least two antennas and the terminal device 120 has only one antenna. The terminal device 110 transmits reference signals to the terminal device 120 on the at least two antennas. The terminal device 120 receives the reference signals on the same antennas and performs measurements on the reference signals.

[0259] In some embodiments, the terminal device 120 may determine the position and / or attitude of the terminal device 110 based on the measurement information.

[0260] In some embodiments, the terminal device 120 may transmit information obtained through measurements to the terminal device 110, and the terminal device 110 determines the position and / or attitude of the terminal device 110 based on the received measurement information.

[0261] In some embodiments, the terminal device 120 may transmit information obtained through measurements to the positioning management device 130, and the positioning management device 130 determines the position and / or attitude of the terminal device 110 based on the received measurement information.

[0262] 2 is a diagram of an application scenario 200 according to the present application. As shown in FIG. 2, the application scenario 200 mainly relates to a cellular positioning scenario. The application scenario 200 may include a terminal device 210, an access network device 220, and a positioning management device 230. The terminal device 210 may be a terminal device to be positioned. The access network device 220 may serve as an anchor device (specifically, the location of the access network device 220 is known). It should be understood that in the positioning scenario, positioning may be performed between the terminal device 210 and the access network device 220 through a cellular communication interface (i.e., a Uu interface).

[0263] In a contemplated embodiment, the terminal device 210 has at least two antennas, and the access network device 220 also has at least two antennas. The access network device 220 transmits a reference signal to the terminal device 210 over the at least two antennas. The terminal device 210 receives the reference signal over the at least two antennas and performs measurements on the reference signal. The terminal device 210 may transmit information obtained through the measurements to the positioning management device 230. The positioning management device 230 determines the position and / or attitude of the terminal device 210 based on the received measurement information. Alternatively, the terminal device 210 may determine the position and / or attitude of the terminal device 210 based on the information obtained through the measurements. Alternatively, the terminal device 210 may transmit the information obtained through the measurements to the access network device 220, and the access network device 220 may determine the position and / or attitude of the terminal device 210 based on the received measurement information.

[0264] In a contemplated embodiment, the terminal device 210 may have at least two antennas, and the access network device 220 may include at least two access network devices. The at least two access network devices included in the access network device 220 each transmit a reference signal to the terminal device 210 via the same antenna of the access network device. The terminal device 210 may receive the reference signal via a different antenna and perform measurements on the reference signal. The terminal device 210 may transmit information obtained through the measurements to the positioning management device 230. The positioning management device 230 determines the position and / or attitude of the terminal device 210 based on the received measurement information. Alternatively, the terminal device 210 may determine the position and / or attitude of the terminal device 210 based on the information obtained through the measurements. Alternatively, the terminal device 210 may transmit the information obtained through the measurements to the access network device 220, and the access network device 220 may determine the position and / or attitude of the terminal device 210 based on the received measurement information.

[0265] In a contemplated embodiment, the terminal device 210 has at least two antennas, and the access network device 220 also has at least two antennas. The terminal device 210 transmits a reference signal to the access network device 220 over the at least two antennas. The access network device 220 receives the reference signal over the at least two antennas and performs measurements on the reference signal. The access network device 220 may transmit information obtained through the measurements to the positioning management device 230. The positioning management device 230 determines the position and / or attitude of the terminal device 210 based on the received measurement information. Alternatively, the access network device 220 may determine the position and / or attitude of the terminal device 210 based on the information obtained through the measurements. Alternatively, the access network device 220 may transmit the information obtained through the measurements to the terminal device 210, and the terminal device 210 may determine the position and / or attitude of the terminal device 210 based on the received measurement information.

[0266] In a possible embodiment, the terminal device 210 may have at least two antennas, and the access network device 220 may include at least two access network devices. The terminal device 210 transmits a reference signal to the access network device 220 over the at least two antennas. At least two access network devices included in the access network device 220 each receive the reference signal over the same antenna and perform measurements on the reference signal. The access network device 220 may transmit information obtained through the measurements to the positioning management device 230. The positioning management device 230 determines the position and / or attitude of the terminal device 210 based on the received measurement information. Alternatively, the access network device 220 may determine the position and / or attitude of the terminal device 210 based on the information obtained through the measurements. Alternatively, the access network device 220 may transmit the information obtained through the measurements to the terminal device 210, and the terminal device 210 may determine the position and / or attitude of the terminal device 210 based on the received measurement information.

[0267] In a contemplated embodiment, the terminal device 210 has at least two antennas, and the access network device 220 has only one antenna. The terminal device 210 transmits reference signals to the access network device 220 over the at least two antennas. The access network device 220 receives the reference signals over the same antennas and performs measurements on the reference signals. The access network device 220 may transmit information obtained through the measurements to the positioning management device 230. The positioning management device 230 determines the position and / or attitude of the terminal device 210 based on the received measurement information. Alternatively, the access network device 220 may determine the position and / or attitude of the terminal device 210 based on the information obtained through the measurements. Alternatively, the access network device 220 may transmit the information obtained through the measurements to the terminal device 210, and the terminal device 210 may determine the position and / or attitude of the terminal device 210 based on the received measurement information.

[0268] It should be understood that the multiple antennas associated with each device in Figures 1 and 2 may be physical antennas at multiple different locations on the device, or virtual antennas formed by movement of antennas on the device, or a combination of physical and virtual antennas. This is not a limitation of the present application. Furthermore, the application scenarios shown in Figures 1 and 2 are merely illustrative examples and are not intended to constitute any limitation on the present application.

[0269] In order to facilitate understanding of the technical solution of the present application, some related technologies in the technical solution of the present application are described.

[0270] 1. Guard period (GP)

[0271] The GP symbol is an idle symbol or a guard symbol. Optionally, the GP symbol may be used for receiving / transmitting transitions, beam sweeping, radio frequency or antenna switching, etc. Optionally, the GP symbol may be located in the middle of a slot or at the last symbol of a slot. This is not a limitation in the present invention.

[0272] 2. Time domain unit and frequency domain unit

[0273] Data or information may be carried within the time-frequency resources.

[0274] In the time domain, a time-frequency resource may include one or more time domain units (sometimes referred to as time units), such as a symbol, a mini-slot, a slot, a partial slot, a subframe, a radio frame, etc.

[0275] In the frequency domain, a time-frequency resource may include one or more frequency domain units, such as a resource element (RE), a resource block (RB), a subchannel, a resource pool, a bandwidth, a bandwidth part (BWP), a carrier, a channel, an interlace RB, etc.

[0276] In an embodiment of the present application, a slot is the most basic time domain resource unit for one transmission. Optionally, a slot includes a full slot, a minislot, a partial slot, or a subslot, which includes one or more OFDM symbols. Optionally, a slot may alternatively be a set of one or more symbols. For example, one slot may alternatively include a set including one or more OFDM symbols. For example, the number of one or more OFDM symbols may be 1, 2, 3, 4, 6, 7, 12, or 14.

[0277] Furthermore, the duration of a slot may be related to the subcarrier spacing. For example, if the subcarrier spacing is 15 kHz, the duration of one slot is 1 millisecond (ms); if the subcarrier spacing is 30 kHz, the duration of one slot is 0.5 ms; or if the subcarrier spacing is 60 kHz, the duration of one slot is 0.25 ms. Similarly, through deduction, if the subcarrier spacing is 15×2 μ If , the duration of one slot is 2 -μ ms, where μ=0,1,2,....

[0278] For ease of explanation, a slot in the present embodiment may include any one of a slot, a mini-slot, a partial slot, or a full slot.

[0279] Optionally, for a slot, if there are one or more GP symbols in the middle of the slot or in the last symbol of the slot, the slot may or may not include a GP symbol, which is not a limitation in the present invention.

[0280] Optionally, in the embodiments of the present application, expressions are used for description: In one expression, a slot may include a last empty symbol; Optionally, in another expression, a slot may not include a last empty symbol.

[0281] In an embodiment of the present application, a frequency domain resource may be an RB set, a subchannel, an interlace, a PRB, or an RE. An RB set may include multiple RBs or multiple subchannels. An interlaced frequency domain resource block may also be referred to as an interlace. One interlace may include multiple discrete frequency domain resources (or non-contiguous frequency domain resources), and the frequency domain spacing between adjacent discrete frequency domain resources is equal. Optionally, a subchannel is a unit of frequency domain resources that includes multiple consecutive RBs. Optionally, the number of consecutive RBs included in a subchannel may be configured or predefined by using signaling. For example, the number of RBs included in a subchannel is an integer, such as 10, 12, 15, 20, or 25. Optionally, one interlace includes multiple RBs, and some RBs not used for transmission appear between the RBs at equal intervals. For example, one interlace may occupy 10 RBs, and among every 10 RBs, only one RB is used for transmission, and the remaining RBs are not used for transmission for the first device. For example, an RB set or resource pool may include 50 RBs, and one interlace may occupy RBs numbered 0, 10, 20, 30, and 40, for a total of 5, and the remaining RBs are assumed not to be used for transmission.

[0282] 3.Automatic gain control (AGC)

[0283] Optionally, in an embodiment of the present application, the AGC symbol is used for a receiver (e.g., a second device) to perform an automatic gain control function. From the perspective of a transmitter (e.g., a first device), this may be implemented by copying the next symbol adjacent to the AGC symbol in the time domain. For example, after AGC is performed on symbol i, the first device copies the signal generated on the (i+1)th symbol and uses that signal as the signal on symbol i. Optionally, symbol i generated in this manner may be used by the second device to perform AGC on the receiver when the second device receives data, control information, reference signals, etc. transmitted by the first device to achieve optimal reception and demodulation performance of the second device.

[0284] 4. Terminal device identifier

[0285] A terminal device identifier is an identifier that indicates, identifies, or corresponds to a corresponding terminal device. For example, a terminal device identifier may be an index or number that uniquely identifies a terminal device. The identifier may be configured by using signaling, pre-configured, or pre-defined. In one example, a terminal device identifier is one of the following: a media access control (MAC) address, a subscriber identity module (SIM) card number, an international mobile equipment identity (IMEI), etc. of a terminal.

[0286] Optionally, the terminal device identifier may alternatively be an identifier indicating, identifying, or corresponding to the corresponding terminal device during transmission. The identifier may be configured by using signaling, pre-configured, or pre-defined. For example, the identifier is an IP address, a radio network temporary identifier (RNTI), a source identifier of the transmitting device, or a destination identifier of the receiving device. Optionally, the source identifier of the transmitting device may be an identifier associated with a particular service or message to be transmitted. Optionally, the destination identifier of the receiving device may be an identifier associated with a particular service or message to be received.

[0287] 5. Physical sidelink feedback channel (PSFCH) is a channel through which terminal devices transmit sidelink feedback control information (SFCI) in the sidelink in scenarios where feedback needs to be performed.

[0288] 6.Series

[0289] In the present invention, the sequence may be a random sequence or a sequence with a low peak-to-average ratio. Optionally, the random sequence may be an m-sequence, a Gold sequence, etc. This is not limited in the present invention. The sequence with a low peak-to-average ratio may be a binomial sequence, a quadrature phase sequence, or a ZC sequence. These sequences have the advantages of a low peak-to-average ratio and good correlation performance. Optionally, the ZC sequence is a Zadoff-Chu sequence or a Zero-Correlation sequence.

[0290] In the present invention, an example of a 31-bit Gold sequence is as follows:

[0291] For example, for a shift register with a length of 31 bits, the length of the output random sequence is M PN where n=0,1,...,M PN The random sequence c(n) may be generated in the following manner:

number

[0292] The initial value x2(n) of the second m-sequence is as follows:

number

[0293] A ZC sequence, also known as a Zadoff-Chu or Frank-Zadoff-Chu (FZC) sequence or Chu sequence, is a perfect sequence. This sequence has ideal cyclic autocorrelation properties. The main parameters for generating a ZC sequence are one or more of the root sequence number, cyclic shift value, or orthogonal cover code of the sequence. The sequence used in the present invention may be a pseudorandom sequence, a ZC sequence, or another sequence with a low peak ratio (e.g., a sequence whose length is a positive integer not less than 6, as defined in the LTE or NR Rel-15 protocol).

[0294] Optionally, the ZC sequence may be defined by using the following equation:

number

number

number

number

number

[0295] 7. A reference signal is a physical signal that carries a sequence and is transmitted to perform a specific function.

[0296] In the present invention, a reference signal (RS), such as a sidelink positioning reference signal (SL-PRS), is used. The RS is a physical signal generated by mapping a specific sequence to a corresponding time-frequency resource in a pre-configured resource mapping mode.

[0297] There are different types of reference signals based on different functions. When a reference signal is used to transmit feedback information, the reference signal may be a demodulation reference signal used to convey the feedback information or a sequence directly used to convey the feedback information. The reference signal is primarily a reference signal for transmitting feedback information for data. The device transmitting the reference signal may be a first device transmitting feedback information, a second device transmitting first data, or a device performing measurements or providing a synchronization source. Reference signals are used for the following purposes: data demodulation, information conveyance, channel state information (CSI), radio resource management (RRM) or radio link monitoring (RLM) measurements, synchronization, phase noise tracking, etc. When a reference signal carries feedback information, the feedback information may be carried in a sequence or in coded bits of control information in a feedback channel. Specifically, the reference signal may be a demodulation reference signal (DMRS) used for a physical sidelink shared channel (PSSCH) or a physical sidelink control channel (PSCCH). If the reference channel is used for CSI, RRM, or RLM measurements, the reference signal may be an RS, a channel sounding reference signal (SRS), a CSI-RS, etc. If the reference signal is used for synchronization, the reference signal may be a reference signal used for a physical sidelink broadcast channel (PSBCH), etc.

[0298] 8. The code resources, also called sequence parameters, correspond to the sequences that are generated based on the sequence parameters.

[0299] For random sequences, the sequence parameters include the starting position of the sequence, the length of the sequence, and the initial value of the sequence. For sequences with low peak-to-average ratios (e.g., Zadoff-Chu (ZC) sequences), the sequence parameters include the root sequence, cyclic shift (CS), orthogonal cover code (OCC), etc.

[0300] For random sequences (eg, Gold sequences or m-sequences), the initial value of the sequence is the initial value of the shift register for generating the sequence.

[0301] 9. Orthogonal Sequence Index

[0302] In the present invention, the orthogonal sequence may be an orthogonal cover code (OCC). The index of the orthogonal sequence is the index of the OCC. The OCC is usually used for sequence transmission or data transmission. By using different OCCs, multiple reference signals or multiple data can be transmitted on one time-frequency resource.

[0303] 10. Comb

[0304] When a signal is mapped to a corresponding symbol in a corresponding frequency domain resource, one reference signal is mapped to every N resources, and no reference signal is mapped to the other N-1 resources. This mapping mode for frequency domain resources is called a comb. The value of N in the comb is called a comb size. In this embodiment, the comb size may also be referred to as Comb-N.

[0305] Optionally, in a frequency domain bandwidth having a particular size, the comb may be further described as follows: the resources in each symbol are Y resource elements (REs) in Y×N REs, there is one reference signal for every N REs, Y is a number greater than 0, and N is a positive integer. In this way, the N REs can be used separately by different communication devices.

[0306] Optionally, assuming that the frequency domain bandwidth includes K PRBs, the value of Y is Nre_rb×K / N, where Nre_rb indicates the number of REs in one PRB, e.g., Nre_rb = 12. Optionally, the value of K is determined based on the bandwidth of the frequency domain resource where the reference signal is located, e.g., the bandwidth of a resource pool, the bandwidth of a carrier, or the bandwidth of a BWP.

[0307] Optionally, for comb-state reference signals, a total of N orthogonal frequency domain resources in the frequency domain are used for the reference signals.

[0308] Optionally, if a reference signal is mapped to one of N REs, there may be N different mapping positions in the frequency domain resources of the reference signal.

[0309] For example, Comb-2 in Fig. 3 indicates that N = 2, and one positioning reference signal is mapped to every two REs. For example, Comb-4 in Fig. 3 indicates that N = 4, and one positioning reference signal is mapped to every four REs. Optionally, if the frequency domain bandwidth includes 106 PRBs, then for Comb-2, Y = 6 x 106; and for Comb-3, Y = 3 x 106.

[0310] 3 is a diagram of resources occupied by downlink positioning reference signals. The time-frequency resources occupied by downlink positioning reference signals shown in FIG. 3 are mapped into a comb shape.

[0311] FIG. 3 shows the time-frequency mapping patterns for downlink positioning reference signals when the comb sizes are 2, 4, 6, and 12, respectively.

[0312] 3, when the comb size is 2, in each symbol, the communication device may map the downlink positioning reference signal to one of every two REs. In other words, when the comb size is 2, the mapping interval of the downlink positioning reference signal in the frequency domain is 2.

[0313] FIG. 4 is a diagram of resources occupied by uplink positioning reference signals. (a) in FIG. 4 shows a time-frequency mapping pattern for uplink positioning reference signals when the comb size is 2 and one symbol is occupied. (b) in FIG. 4 shows a time-frequency mapping pattern for uplink positioning reference signals when the comb size is 2 and two symbols are occupied. (c) in FIG. 4 shows a time-frequency mapping pattern for uplink positioning reference signals when the comb size is 4 and two symbols are occupied. (d) in FIG. 4 shows a time-frequency mapping pattern for uplink positioning reference signals when the comb size is 2 and four symbols are occupied. (e) in FIG. 4 shows a time-frequency mapping pattern for uplink positioning reference signals when the comb size is 4 and four symbols are occupied. (f) in FIG. 4 shows a time-frequency mapping pattern for uplink positioning reference signals when the comb size is 8 and one symbol is occupied. (g) in Fig. 4 shows a time-frequency mapping pattern for an uplink positioning reference signal when the comb size is 4 and 8 symbols are occupied. (h) in Fig. 4 shows a time-frequency mapping pattern for an uplink positioning reference signal when the comb size is 8 and 8 symbols are occupied. (i) in Fig. 4 shows a time-frequency mapping pattern for an uplink positioning reference signal when the comb size is 4 and 12 symbols are occupied. (j) in Fig. 4 shows a time-frequency mapping pattern for an uplink positioning reference signal when the comb size is 8 and 12 symbols are occupied.

[0314] The communication devices (e.g., the first communication device and the second communication device) in the embodiments of the present application may be terminal devices, network devices (e.g., access network devices), positioning management devices, etc. Alternatively, the communication devices may be components (e.g., chips, chip systems, and / or circuits) in the aforementioned devices.

[0315] FIG. 5 is a schematic flowchart of a method for transmitting sidelink positioning information according to an embodiment of the present application.

[0316] 501: A first communication device determines configuration information.

[0317] Optionally, in some embodiments, the configuration information indicates at least one of the following information: the number of symbols occupied by the sidelink control information, the frequency domain bandwidth occupied by the sidelink control information, the number of symbols occupied by the sidelink positioning reference signals, and a mapping interval of the sidelink positioning reference signals in the frequency domain.

[0318] 502: The first device transmits sidelink positioning information within a slot, where the sidelink positioning information is generated based on the configuration information, and the sidelink positioning information includes sidelink control information and sidelink positioning reference signals.

[0319] Correspondingly, the second communication device receives a sidelink control channel within the slot; determines at least one of the following information: a frequency domain resource of a sidelink positioning reference signal and a sequence parameter of the sidelink positioning reference signal; and receives a sidelink positioning reference signal within the slot based on the information.

[0320] Optionally, in some embodiments, the sidelink control information is located before the sidelink positioning reference signal within the slot.

[0321] Optionally, in some other embodiments, within the slot, the sidelink control information is located after the sidelink positioning reference signal or on either side of the sidelink positioning reference signal.

[0322] Optionally, in some embodiments, the sidelink control information and the sidelink positioning reference signal are transmitted in the same slot. Correspondingly, the second communication device may receive the sidelink control information and the sidelink positioning reference signal in the same slot.

[0323] For example, if a non-extended cyclic prefix (CP) is used, the SLCI and the SLPOSR are transmitted within 14 symbols of the same slot, whereas if an extended CP is used, the SLCI and the SLPOSR are transmitted within 12 symbols of the same slot.

[0324] As another example, the SLCI and the SLPOSR may be transmitted within half of a slot, i.e., within the first or second half of the same slot.

[0325] As another example, the sidelink control information and the sidelink positioning reference signals are transmitted within a minislot, the size of which may be two symbols, four symbols, etc.

[0326] In some embodiments, the number of symbols occupied by the sidelink control information is smaller than the number of symbols occupied by the sidelink positioning reference signal, while in some other embodiments, the number of symbols occupied by the sidelink control information is larger than the number of symbols occupied by the sidelink positioning reference signal.

[0327] Optionally, in some embodiments, the first communications device may transmit positioning information within the 14 symbols contained in the slot.

[0328] For example, in some embodiments, two of the 14 symbols may be used to transmit sidelink control information and ten of the 14 symbols are used to transmit sidelink positioning reference signals.

[0329] As another example, in some embodiments, one of the 14 symbols may be used to transmit sidelink control information and 11 of the 14 symbols may be used to transmit sidelink positioning reference signals.

[0330] As another example, in some embodiments, four of the fourteen symbols may be used to transmit sidelink control information and eight of the fourteen symbols may be used to transmit sidelink positioning reference signals.

[0331] As another example, in some embodiments, 6 of the 14 symbols may be used to transmit sidelink control information and the other 6 of the 14 symbols may be used to transmit sidelink positioning reference signals.

[0332] As another example, in some embodiments, 8 of the 14 symbols may be used to transmit sidelink control information and 4 of the 14 symbols may be used to transmit sidelink positioning reference signals.

[0333] As another example, in some embodiments, 10 of the 14 symbols may be used to transmit sidelink control information and 2 of the 14 symbols may be used to transmit sidelink positioning reference signals.

[0334] Optionally, in some other embodiments, the first communication device may transmit positioning information within the seven symbols contained in the slot, in other words, in this case, one piece of positioning information may occupy only half of the slot.

[0335] For example, in some embodiments, two of the seven symbols may be used to transmit sidelink control information and three of the seven symbols may be used to transmit sidelink positioning reference signals.

[0336] As another example, in some embodiments, one of the seven symbols may be used to transmit sidelink control information and four symbols may be used to transmit sidelink positioning reference signals.

[0337] As another example, in some embodiments, four of the seven symbols may be used to transmit sidelink control information and three of the seven symbols may be used to transmit sidelink positioning reference signals.

[0338] As another example, in some embodiments, four of the seven symbols may be used to transmit sidelink control information and one symbol may be used to transmit a sidelink positioning reference signal.

[0339] In some embodiments, the sidelink control information may be carried in a sidelink control channel, e.g., in some embodiments, the sidelink control channel may be a physical sidelink control channel (PSCCH).

[0340] In some embodiments, when 12 of the 14 symbols in the slot are used to transmit positioning information, the remaining two symbols may be located at both ends of the 14 symbols. The information carried in the first symbol of the 14 symbols is the same as the information carried in the second symbol of the 14 symbols. In this way, the receiving end can perform automatic gain control (AGC) by using the first symbol. The last symbol of the 14 symbols may be an empty symbol, which may serve as a guard period (GP).

[0341] In some embodiments, the resources for sidelink positioning reference signals in each symbol are Y REs out of Y×N REs, where one out of every N REs is occupied by a sidelink positioning reference signal, Y is a number greater than 0, and N is a positive integer. In other words, the mapping interval of sidelink positioning reference signals in the frequency domain is N. Alternatively, this can be referred to as sidelink positioning reference signals being mapped to the frequency domain with a comb size of N. Optionally, N=1 indicates that there is a sidelink positioning reference signal in every RE. Optionally, N>1 indicates that there is one sidelink positioning reference signal in every N RE.

[0342] For the time-frequency mapping pattern for the sidelink positioning reference signal, please refer to the time-frequency mapping pattern for the downlink positioning reference signal shown in Figure 3 or the time-frequency mapping pattern for the uplink positioning reference signal shown in Figure 4.

[0343] In some embodiments, the value of N is less than or equal to the number of symbols occupied by the sidelink positioning reference signal.

[0344] In some other embodiments, the value of N is greater than the number of symbols occupied by the sidelink positioning reference signal.

[0345] Figure 6 is a diagram of a slot for transmitting positioning information. The slot shown in Figure 6 contains 14 symbols. The information contained in symbol 0 is the same as the information contained in symbol 1. Symbol 0 may be used for AGC. Therefore, symbol 0 is marked as AGC in Figure 6. Symbols 1 and 2 are used to transmit the PSCCH. The PSCCH carries sidelink control information within the positioning information. Symbols 3 to 12 are used to transmit sidelink positioning reference signals. Symbol 13 is an empty symbol that serves as a guard period.

[0346] As shown in Fig. 6, the mapping onto the 10 symbols used for transmitting the sidelink positioning reference signals is performed with a comb size of 12. Specifically, the mapping interval of the sidelink positioning reference signals in the frequency domain is 12. In other words, the sidelink positioning reference signals are mapped onto one of every 12 REs. The REs onto which the sidelink positioning reference signals are mapped in two adjacent symbols are different.

[0347] Figure 7 is a diagram of another slot for transmitting positioning information. The slot shown in Figure 7 includes 14 symbols. The information contained in symbol 0 is the same as the information contained in symbol 1. Symbol 0 may be used for AGC. Therefore, symbol 0 is marked as AGC in Figure 7. Symbol 1 is used to transmit the PSCCH. The PSCCH carries sidelink control information within the positioning information. Symbols 2 to 12 are used to transmit sidelink positioning reference signals. Symbol 13 is an empty symbol that serves as a guard period.

[0348] As shown in Fig. 7, the mapping onto the 11 symbols used for transmitting the sidelink positioning reference signals is performed with a comb size of 12. Specifically, the mapping interval of the sidelink positioning reference signals in the frequency domain is 12. In other words, the sidelink positioning reference signals are mapped onto one of every 12 REs. The REs onto which the sidelink positioning reference signals are mapped in two adjacent symbols are different.

[0349] Figure 8 is a diagram of a slot for transmitting positioning information. The slot shown in Figure 8 contains seven symbols. The information contained in symbol 0 is the same as the information contained in symbol 1. Symbol 0 may be used for AGC. Therefore, symbol 0 is marked as AGC in Figure 8. Symbols 1 and 2 are used to transmit the PSCCH. The PSCCH carries sidelink control information within the positioning information. Symbols 3 to 5 are used to transmit sidelink positioning reference signals. Symbol 6 is an empty symbol that serves as a guard period.

[0350] As shown in Fig. 8, the mapping onto the three symbols used for transmitting the sidelink positioning reference signals is performed with a comb size of 3. Specifically, the mapping interval of the sidelink positioning reference signals in the frequency domain is 3. In other words, the sidelink positioning reference signals are mapped onto one of every three REs. The REs onto which the sidelink positioning reference signals are mapped in two adjacent symbols are different.

[0351] Figure 9 is a diagram of a slot for transmitting positioning information. The slot shown in Figure 9 contains seven symbols. The information contained in symbol 0 is the same as the information contained in symbol 1. Symbol 0 may be used for AGC. Therefore, symbol 0 is marked as AGC in Figure 9. Symbol 1 is used to transmit the PSCCH. The PSCCH carries sidelink control information within the positioning information. Symbols 2 to 5 are used to transmit sidelink positioning reference signals. Symbol 6 is an empty symbol that serves as a guard period.

[0352] As shown in Fig. 9, the mapping onto the four symbols used for transmitting the sidelink positioning reference signals is performed with a comb size of 4. Specifically, the mapping interval of the sidelink positioning reference signals in the frequency domain is 4. In other words, the sidelink positioning reference signals are mapped onto one out of every four REs. The REs onto which the sidelink positioning reference signals are mapped in two adjacent symbols are different.

[0353] In some other embodiments, if N is smaller than the number of symbols occupied by the sidelink positioning reference signal, the mapping of the sidelink positioning reference signal in the time domain may be a repetition of the N symbols used to transmit the sidelink positioning reference signal.

[0354] For example, Figure 10 is a diagram of another slot for transmitting positioning information. The slot shown in Figure 10 includes 14 symbols. The information contained in symbol 0 is the same as the information contained in symbol 1. Symbol 0 may be used for AGC. Therefore, symbol 0 is marked as AGC in Figure 10. Symbol 1 is used to transmit the PSCCH. The PSCCH carries sidelink control information within the positioning information. Symbols 2 to 12 are used to transmit sidelink positioning reference signals. Symbol 13 is an empty symbol that serves as a guard period.

[0355] As shown in Fig. 10, the mapping to the 11 symbols used for transmitting the sidelink positioning reference signal is performed with a comb size of 4. Specifically, the mapping interval of the sidelink positioning reference signal in the frequency domain is 4. In other words, the sidelink positioning reference signal is mapped to one of every four REs. The REs to which the sidelink positioning reference signal is mapped in two adjacent symbols are different. From Fig. 10, it can be seen that symbols 6 to 9 are repetitions of symbols 2 to 5, and symbols 10 to 12 are repetitions of symbols 2 to 4.

[0356] Optionally, in some other embodiments, all 14 symbols in a slot may be used to transmit positioning information. For example, the first two symbols of the 14 symbols may be used to transmit sidelink control information (SCI) and the last 12 symbols may be used to transmit SCRs. As another example, the first four symbols of the 14 symbols may be used to transmit SCIs and the last 10 symbols may be used to transmit SCRs. Similarly, alternatively, all seven symbols in a slot may be used to transmit positioning information. For example, the first two symbols of the seven symbols may be used to transmit SCIs and the last five symbols may be used to transmit SCRs. As another example, the first three symbols of the seven symbols may be used to transmit SCIs and the last four symbols may be used to transmit SCRs.

[0357] Optionally, in some other embodiments, a slot may include a symbol used to transmit sidelink control information (SLI), a symbol used to transmit a SL positioning reference signal (SRS), and an empty symbol serving as a guard period. For example, the first two symbols out of 14 symbols may be used to transmit SLI, the third through thirteenth symbols may be used to transmit a SL positioning reference signal (SRS), and the last symbol is an empty symbol serving as a guard period. As another example, the first four symbols out of 14 symbols may be used to transmit SLI, the fourth through thirteenth symbols may be used to transmit a SL positioning reference signal (SRS), and the last symbol is an empty symbol serving as a guard period. As another example, the first two symbols out of seven symbols may be used to transmit SLI, the third through sixth symbols may be used to transmit a SL positioning reference signal (SRS), and the last symbol is an empty symbol serving as a guard period. As another example, the first three symbols of the seven symbols may be used to transmit sidelink control information, the fourth to sixth symbols may be used to transmit sidelink positioning reference signals, and the last symbol is an empty symbol serving as a guard period.

[0358] Similarly, in some embodiments, a slot may include symbols used to transmit sidelink control information, symbols used to transmit sidelink positioning reference signals, and symbols used for AGC. For example, the first and second symbols of the 14 symbols may carry the same information, the second and third symbols may be used to transmit sidelink control information, and the fourth to fourteenth symbols may be used to transmit sidelink positioning reference signals. As another example, the first and second symbols of the 14 symbols may carry the same information, the second to fifth symbols may be used to transmit sidelink control information, and the sixth to fourteenth symbols may be used to transmit sidelink positioning reference signals. As another example, the first and second symbols of the seven symbols may carry the same information, the second and third symbols may be used to transmit sidelink control information, and the fourth to seventh symbols may be used to transmit sidelink positioning reference signals. As another example, the first and second symbols of the seven symbols may carry the same information, the second to fourth symbols may be used to transmit sidelink control information, and the fifth to seventh symbols may be used to transmit sidelink positioning reference signals.

[0359] In the above embodiment, the 14 symbols or 7 symbols include only one free symbol. In some other embodiments, the number of free symbols may alternatively be a positive integer greater than one.

[0360] In the above embodiment, only one symbol is used for AGC. In some other embodiments, the number of symbols used for AGC may alternatively be a positive integer greater than one.

[0361] Optionally, in some embodiments, the frequency domain units used for transmitting sidelink control information are obtained through subchannel-based contiguous mapping or interlace-based discrete mapping.

[0362] Optionally, in some embodiments, the frequency domain resource bandwidth occupied by the sidelink control information is K×φ frequency domain resources, where K is a number greater than 0 and φ is a positive integer greater than or equal to 1. The granularity of the frequency domain resources may be a physical resource block, a subchannel, or an interlace.

[0363] For example, the number of symbols occupied by the sidelink control information is 1 and K is equal to 2. As another example, the number of symbols occupied by the sidelink control information is 2 and K is equal to 1. As another example, the number of symbols occupied by the sidelink control information is 4 and K is equal to 1 / 2.

[0364] Figure 11 shows frequency domain resources occupied by sidelink control information. As mentioned above, sidelink control information may be carried within a sidelink control channel. Therefore, the frequency domain resources occupied by the sidelink control information may be considered as frequency domain resources occupied by the sidelink control channel. (a) in Figure 11 shows the structure of a frequency domain interlace for a two-symbol PSCCH. (b) in Figure 11 shows the structure of a contiguous frequency domain mapping for a two-symbol PSCCH. (c) in Figure 11 shows the structure of a frequency domain interlace for a one-symbol PSCCH. (d) in Figure 11 shows the structure of a contiguous frequency domain mapping for a one-symbol PSCCH.

[0365] As mentioned above, if the number of symbols occupied by the sidelink control information is 1, then K is equal to 2. Thus, when φ is equal to 1, if frequency domain interlacing is used for the PSCCH, then the structure of the PSCCH is as shown in (c) of Figure 11; or if contiguous frequency domain mapping is used for the PSCCH, then the structure of the PSCCH is as shown in (d) of Figure 11.

[0366] Similarly, if the number of symbols occupied by the sidelink control information is 2, then K is equal to 1. Thus, when φ is equal to 1, if frequency domain interlacing is used for the PSCCH, then the structure of the PSCCH is as shown in (a) of Figure 11; or if contiguous frequency domain mapping is used for the PSCCH, then the structure of the PSCCH is as shown in (b) of Figure 11.

[0367] Optionally, in some embodiments, the slots used for transmitting positioning information may also be used for transmitting data. The data may be carried in a physical sidelink shared channel (PSSCH). For ease of description, the time domain resource used for transmitting data may be referred to as the first time domain resource, and the time domain resource used for transmitting sidelink positioning reference signals may be referred to as the second time domain resource. The first and second time domain resources are separated by at least one empty symbol.

[0368] FIG. 12 shows the relationship between the first time domain resource and the second time domain resource.

[0369] As shown in (a) of Figure 12, the first time domain resource is located before the second time domain resource, and the first time domain resource and the second time domain resource are separated by one empty symbol, and there is also an empty symbol after the second time domain resource.

[0370] As shown in (b) of Figure 12, the first time domain resource is located after the second time domain resource, and the first time domain resource and the second time domain resource are separated by one empty symbol. There is also an empty symbol after the first time domain resource.

[0371] In some embodiments, the empty symbol after the second time domain resource may be considered the last symbol of the second time domain resource.

[0372] Optionally, in some embodiments, the slots used for transmitting the positioning information may be further used for transmitting feedback information. The time domain resource used for transmitting the feedback information may be referred to as a third time domain resource. The third time domain resource may be located after the first time domain resource. The third time domain resource and the first time domain resource are separated by at least one empty symbol. The feedback information may be carried in a physical sidelink feedback channel (PSFCH).

[0373] As shown in (c) of Figure 12, the first time domain resource is located before the second time domain resource, the third time domain resource is located after the second time domain resource, the first time domain resource and the second time domain resource are separated by one empty symbol, and the third time domain resource and the second time domain resource are separated by one empty symbol, and there is also an empty symbol after the third time domain resource.

[0374] As shown in (d) of Figure 12, the second time domain resource is located before the first time domain resource, the third time domain resource is located after the first time domain resource, the first time domain resource and the second time domain resource are separated by one empty symbol, and the third time domain resource and the first time domain resource are separated by one empty symbol, and there is also an empty symbol after the third time domain resource.

[0375] Similarly, in the slot structure shown in Figure 12, the first and second symbols in the slot may carry the same content, in other words, the first symbol in the slot is also a symbol that can be used for AGC.

[0376] Optionally, in some embodiments, the second time domain resource may also be used for transmitting sidelink control information, i.e., for transmitting sidelink control information within the positioning information and sidelink positioning reference signals within the positioning information.

[0377] Optionally, in some other embodiments, the first time domain resource may also be used to transmit sidelink control information. In other words, the sidelink control information in the positioning information is transmitted by using the first time domain resource, and the sidelink positioning reference signal in the positioning information is transmitted by using the second time domain resource. In this case, the sidelink control information may be carried in the PSSCH.

[0378] Optionally, in some embodiments, if the second time domain resource can be used for transmitting sidelink control information, the structure of the second time domain resource may be the same as the structure of a slot in which seven symbols are used for transmitting positioning information. Specifically, the first symbol is used for AGC, the last symbol is an empty symbol serving as a guard period, and the middle five symbols are used for transmitting sidelink positioning information. In this case, the empty symbols in the second time domain resource and the first time domain resource can be considered as the last empty symbol serving as a guard period among the seven symbols.

[0379] Optionally, in some other embodiments, if the second time domain resource can be used for transmitting sidelink control information, the structure of the second time domain resource may alternatively not be exactly the same as the structure of the slot in which the seven symbols are used for transmitting the positioning information. For example, if the second time domain resource is located after the first time domain resource, the first symbol of the seven symbols may not need to be used as a symbol for AGC, but is used to transmit the sidelink control information.

[0380] Optionally, in some embodiments, the first time domain resource may be further used to transmit first sidelink control information, the first sidelink control information indicating the number of symbols occupied by the sidelink control information and / or the frequency domain bandwidth occupied by the sidelink control information. In other words, the PSSCH may further carry sidelink control information indicating the number of symbols occupied by the sidelink control information and / or the frequency domain bandwidth occupied by the sidelink control information.

[0381] Optionally, in some embodiments, the first time domain resource may be further used to transmit second sidelink control information, which indicates the number of symbols occupied by sidelink positioning reference signals and / or the mapping interval of sidelink positioning reference signals in the frequency domain. In other words, the PSSCH may carry further sidelink control information indicating the number of symbols occupied by sidelink positioning reference signals and / or the mapping interval of sidelink positioning reference signals in the frequency domain.

[0382] Optionally, in some embodiments, the sidelink positioning reference signal carries third sidelink control information indicating the number of symbols occupied by the sidelink positioning reference signal and / or a mapping interval of the sidelink positioning reference signal in the frequency domain.

[0383] Optionally, in some other embodiments, the sidelink control information is further used to carry fourth sidelink control information, which indicates whether the PSSCH carries the first sidelink control information and / or the second sidelink control information.

[0384] Optionally, in some other embodiments, sidelink control information indicating the number of symbols occupied by sidelink control information and / or the frequency domain bandwidth occupied by sidelink control information (i.e., first sidelink control information) and sidelink control information indicating the number of symbols occupied by sidelink positioning reference signals and / or the mapping interval of sidelink positioning reference signals in the frequency domain (i.e., second sidelink control information) may be carried in the PSSCH and the PSCCH, respectively. For example, in some embodiments, the PSCCH may carry the first sidelink control information, and the PSSCH may carry the second sidelink control information. For example, the sidelink control information (SCI) in the PSCCH may carry the first sidelink control information, and the SCI carried in the PSSCH may carry the second sidelink control information. In other words, the first sidelink control information and the second sidelink control information may be indicated by two levels of the SCI. The SCI in the PSCCH may be referred to as a first-level SCI, and the SCI carried in the PSSCH may be referred to as a second-level SCI. As another example, in some other embodiments, the PSCCH may carry the first sidelink control information and the fourth sidelink control information. Whether the PSSCH carries the second sidelink control information may be determined based on the fourth sidelink control information.

[0385] Optionally, in some embodiments, the configuration information is represented in a resource pool, in which case the first communications device may determine the configuration information from the resource pool.

[0386] Optionally, in some embodiments, the resources of the sidelink control information are related to the resources of the sidelink positioning reference signals, which may be resources of a sidelink control channel (e.g., PSCCH).

[0387] Optionally, in some embodiments, the fact that the resources of the sidelink control information are related to the resources of the sidelink positioning reference signal comprises that the resources of the sidelink positioning reference signal are indicated by indication information and the sidelink control information comprises the indication information; or that the resources of the sidelink positioning reference signal are determined based on frequency domain resources and / or code resources of the sidelink control information.

[0388] For the specific relationship between the resources used for transmitting sidelink control information and the resources used for transmitting sidelink positioning reference signals, please refer to the description in the following embodiments.

[0389] FIG. 13 is a schematic flowchart of a method for transmitting a sidelink positioning reference signal according to an embodiment of the present application.

[0390] 1301: A first communication device determines at least one of the following information: a frequency domain resource of a sidelink positioning reference signal and a sequence parameter of a sidelink positioning reference signal, where the information is associated with a sidelink control channel.

[0391] 1302: The first communication device transmits a sidelink control channel and a sidelink positioning reference signal within a slot based on the information.

[0392] Correspondingly, the second communication device receives sidelink positioning information within the slots, where the sidelink positioning information is generated based on configuration information, the sidelink positioning information including sidelink control information and sidelink positioning reference signals, the configuration information indicating at least one of the following information: a number of symbols occupied by the sidelink control information, a frequency-domain bandwidth occupied by the sidelink control information, a number of symbols occupied by the sidelink positioning reference signals, and a mapping interval of the sidelink positioning reference signals in the frequency domain; and the second communication device performs measurements on the sidelink positioning reference signals to obtain measurement results.

[0393] The time-frequency resources occupied by the sidelink control channel and the sidelink positioning reference signal within the slot are the same as those in the previous embodiments. For example, the sidelink control channel and the sidelink positioning reference signal are transmitted in the same slot. As another example, the sidelink control channel is positioned before the sidelink positioning reference signal. As another example, the sidelink control channel and the sidelink positioning reference signal are transmitted in the same slot. As another example, the resources for the sidelink positioning reference signal in each symbol are Y REs out of Y×N REs, where one out of every N REs is occupied by the sidelink positioning reference signal, Y is a number greater than 0, and N is a positive integer. For specific relationships between the time-frequency resources occupied by the sidelink control channel and the time-frequency resources occupied by the sidelink positioning reference signal, please refer to the previous embodiments. For brevity, the details will not be described again here.

[0394] Optionally, in some embodiments, the information being associated with a sidelink control channel may include the information being carried in the sidelink control channel; and / or the information being determined based on frequency domain resources and / or code resources of the sidelink control channel. Specifically, in some embodiments, the first communication device may directly transmit information conveying frequency domain resources of the sidelink positioning reference signal and / or sequence parameters of the sidelink positioning reference signal. The receiving end (which may be referred to as the second communication device below) may determine the frequency domain resources of the sidelink positioning reference signal and / or sequence parameters of the sidelink positioning reference signal based on the received information. In some other embodiments, the second communication device may determine the information based on resources of the received sidelink control channel.

[0395] Optionally, in some embodiments, the sidelink control channel may be a PSCCH. The above information may be carried within the SCI.

[0396] The number of candidate frequency domain resources for the sidelink positioning reference signal (also referred to as frequency domain resources usable for the sidelink positioning reference signal) may be the number of RE offsets. The number of candidate frequency domain resources for the sidelink control channel (also referred to as frequency domain resources usable for the sidelink control channel) is the number of interlaces or frequency domain subchannels.

[0397] For ease of description, the number of RE offsets may be denoted as N, and the number of interlaces or frequency domain subchannels may be denoted as M. N may be a comb size. M and N may be pre-configured, pre-defined, or configured by a network device.

[0398] N and M may have the following relationship: N is greater than M, or N is less than M.

[0399] If N is greater than M, there can be two schemes for the sidelink control channel: Scheme 1: No code division is performed. Scheme 2: Code division is performed.

[0400] In Scheme 1, no code division is performed on the resources of the sidelink control channel. In this case, the second communication device only needs to determine the frequency domain resources of the sidelink control channel. The second communication device may determine the frequency domain resources of the sidelink control channel through blind detection. The sidelink control information may only indicate the frequency domain resources of the sidelink positioning reference signal. The frequency domain resources of the sidelink positioning reference signal may be the RE offset of the sidelink positioning reference signal.

[0401] Figure 14 illustrates the case where N is greater than M and no code division is performed for the sidelink control channel. Assume that the sidelink control channel in Figure 14 is a PSCCH and the candidate frequency domain resources in the PSCCH include a total of five subchannels: subchannel 0 to subchannel 4. The candidate frequency domain resources for the sidelink positioning reference signal include a total of eight RE offsets: RE offset 0 to RE offset 7.

[0402] 14, subchannel 0 for the PSCCH corresponds to RE offset 2 for the sidelink positioning reference signal. In this case, the sidelink control information may include RE offset 2. In this way, the second communication device may receive the PSCCH transmitted through subchannel 0 through blind detection and then determine the location of the frequency domain resource of the sidelink positioning reference signal from the sidelink control information carried in the PSCCH.

[0403] In Scheme 2, if code division is performed on the resources of the sidelink control channel, the second communication device needs to know the frequency domain resources and sequence parameters of the sidelink control channel. The second communication device may determine the frequency domain resources of the sidelink control channel through blind detection. The frequency domain resources of the sidelink positioning reference signal may be indicated by the information. The code resources of the sidelink control channel (i.e., the sequence parameters of the sidelink control channel) may also be indicated by the information. In other words, the information may further include the sequence parameters of the sidelink control channel.

[0404] For example, in some embodiments, multiple cyclic shift (CS) values have a one-to-one correspondence with multiple orthogonal sequence indices. In this case, the sequence parameter for the sidelink control channel may be the CS values for the sidelink control channel. As another example, multiple root sequence indices have a one-to-one correspondence with multiple orthogonal sequence indices. In this case, the sequence parameter may be the root sequence index for the sidelink control channel. Of course, the sequence parameter may alternatively be the orthogonal sequence index for the sidelink control channel.

[0405] Figure 15 illustrates a case where N is greater than M and code division is performed for the sidelink control channel. Assume that the sidelink control channel in Figure 15 is the PSCCH and the candidate frequency domain resources for the PSCCH include a total of five frequency domain resources: frequency domain resource 0 to frequency domain resource 4. Optionally, code division is performed for the PSCCH by using an orthogonal cover code (OCC). Optionally, in the code division mode, the OCC may be used for the information and demodulation reference signal (DM-RS) carried in the PSCCH to be transmitted, or the OCC may be used only for the demodulation reference signal (DM-RS) of the PSCCH to be transmitted. Optionally, there may be at least two OCCs. In the diagram shown in Figure 15, there are a total of two OCC sequences: OCC0 and OCC1. In this case, the candidate frequency domain resources for the PSCCH include a total of 10 candidate resources: candidate resource 0 to candidate resource 9. The candidate frequency domain resources for sidelink positioning reference signals include a total of eight RE offsets: RE offset 0 to RE offset 7.

[0406] As shown in Figure 15, the frequency domain resource with an index of 2 in OCC0 corresponds to the SL-PRS with an offset of 4. In this case, the sidelink control information may include RE offset 2 and OCC0. In this way, the second communication device may receive through blind detection the PSCCH transmitted by using the frequency domain resource with index of 2, and then determine from the information carried in the PSCCH the sequence parameters indicating the location of the frequency domain resource of the sidelink positioning reference signal and the orthogonal sequence index of the sidelink control channel.

[0407] Optionally, in some embodiments, in Method 1 and Method 2, the length of the information is:

number

[0408] If N is smaller than M, code division may be performed on the sidelink positioning reference signals. The information includes frequency domain resources of the sidelink positioning reference signals and sequence parameters of the sidelink positioning reference signals.

[0409] Optionally, the sequence parameters of the sidelink positioning reference signal may also include a CS value of the sidelink positioning reference signal, a root sequence index of the sidelink positioning reference signal, an orthogonal sequence index of the sidelink positioning reference signal, or an index of a parameter for generating an initial value of the sequence of the sidelink positioning reference signal. Optionally, the parameter for generating an initial value of the sequence of the sidelink positioning reference signal may be an index of multiple values. For example, multiple IDs may be configured, pre-configured, or indicated by using signaling: {N ID-1 ,N ID-2 ,...,N ID-MOptionally, these IDs are used to generate initial values for the random sequence. Optionally, the index of the parameter for the initial value may indicate a corresponding one of the M IDs in this specification.

[0410] For example, assuming there are four sequences, the CS values may be {0, 3, 6, 9} correspondingly. If there are a total of four orthogonal sequence indices that can be used for the sidelink positioning reference signal, the four CS values may correspond to the four indices, respectively. For example, CS value 0 corresponds to orthogonal sequence index 0, CS value 3 corresponds to orthogonal sequence index 1, CS value 6 corresponds to orthogonal sequence index 2, and CS value 9 corresponds to orthogonal sequence index 3. If the orthogonal sequence index of the sidelink positioning reference signal is 3, the information may indicate the orthogonal sequence index of the sidelink positioning reference signal by indicating CS value 9. The second communication device determines that the information conveys CS value 9 and then determines that the orthogonal sequence index of the sidelink positioning reference signal is 3 based on the correspondence between the CS value and the orthogonal sequence index.

[0411] Fig. 16 illustrates a case where N is smaller than M and code division is performed for the sidelink positioning reference signal. Assume that the sidelink control channel in Fig. 16 is the PSCCH and the candidate frequency domain resources for the PSCCH include a total of 10 frequency domain resources: frequency domain resource 0 to frequency domain resource 9. The candidate frequency domain resources for the sidelink positioning reference signal include a total of four RE offsets: RE offset 0 to RE offset 3. A total of four sequences: sequence 0 to sequence 3 are obtained for the sidelink positioning reference signal through code division. In this case, the candidate resources for the sidelink positioning reference signal include a total of 12 candidate resources: candidate resource 0 to candidate resource 11.

[0412] 16, frequency domain resource 1 corresponds to RE offset 2 and sequence 1 of the sidelink positioning reference signal. In this case, the sidelink control information may include RE offset 2 and sequence 1. In this way, the second communication device may receive the PSCCH transmitted by using frequency domain resource 1 through blind detection and then determine the frequency domain resource and sequence parameters of the sidelink positioning reference signal from the information carried in the PSCCH.

[0413] Optionally, in some embodiments, the sidelink control information may indicate frequency domain resources of the sidelink positioning reference signals and sequence parameters of the sidelink positioning reference signals by using separate fields. In other words, the sidelink control information may include two fields, one of which indicates frequency domain resources of the sidelink positioning reference signals and the other of which indicates sequence parameters of the sidelink positioning reference signals.

[0414] Optionally, in some other embodiments, the sidelink control information may indicate the frequency domain resources of the sidelink positioning reference signals and the sequence parameters of the sidelink positioning reference signals jointly by using one field.

[0415] In some embodiments, the index of the first frequency domain resource and / or the first sequence index is determined based on an index of a frequency domain resource of the sidelink control channel, wherein the first frequency domain resource is a frequency domain resource of the sidelink positioning reference signal and the first sequence index corresponds to a sequence parameter for determining the sidelink positioning reference signal.

[0416] The index of the frequency domain resource for the sidelink control channel may be the index of the lowest (or highest) PRB of the occupied resource, the index of the lowest (or highest) subchannel of the resource occupied by the PSCCH, or the index of the lowest (or highest) frequency domain interlace of the resource occupied by the PSCCH.

[0417] Optionally, in some embodiments, the index of the first frequency domain resource and the first sequence index are determined based on N and the index of the frequency domain resource of the sidelink control channel.

[0418] Optionally, in some embodiments, the index of the first frequency domain resource and the first sequence index may satisfy the following formula:

number

[0419] i SL-PRS_RE-offset denotes the index of the first frequency domain resource, and i PSSCH denotes the index of the frequency domain resource of the sidelink control channel, and i SL-PRS_seq-index where Δ denotes the first sequence index, and N is the number of RE offsets (specifically, the number of frequency domain resources that can be used for sidelink positioning reference signals). Δ is an offset, and Δ may be a positive integer greater than or equal to 0 and less than or equal to N-1. floor() denotes rounding down. Δ may be pre-configured, pre-defined, or configured by the network device.

[0420] In some embodiments, the offset Δ may not be used to determine the index of the first frequency domain resource or the first sequence index. In this case, the index of the first frequency domain resource and the first sequence index may satisfy the following equation:

number

[0421] i SL-PRS_RE-offset denotes the index of the first frequency domain resource, and i PSSCH denotes the index of the frequency domain resource of the sidelink control channel, and i SL-PRS_seq-index denotes the first sequence index, N is the number of RE offsets (specifically, the number of frequency domain resources that can be used for sidelink positioning reference signals), and floor() denotes rounding down.

[0422] Figure 18 is a diagram showing a case where N is smaller than M and code division is performed for sidelink positioning reference signals. As shown in Figure 18, M is equal to 10, N is equal to 4, and the number of sequences for sidelink positioning reference signals is 3. In this case, there are a total of 10 candidate control resources and a total of 12 candidate reference signal resources, with each candidate control resource corresponding to one candidate reference signal resource.

[0423] Optionally, in some embodiments, the first frequency domain resource index and / or the first sequence index is determined based on the frequency domain resource index of the sidelink control channel and the orthogonal sequence index of the sidelink control channel.

[0424] Optionally, in some embodiments, the index of the first frequency domain resource and the first sequence parameter are determined based on an index of the frequency domain resource of the sidelink control channel, an orthogonal sequence index of the sidelink control channel, the number M of orthogonal frequency domain resources of the sidelink control channel, and N.

[0425] If N is greater than M, K orthogonal sequences may be obtained by performing code division on the sidelink control channel, where K×M is greater than or equal to N, and each of the N candidate reference signal resources may correspond to one of the K×M candidate control resources. In this case, the index of the first frequency domain resource may satisfy the following formula:

number

[0426] i SL-PRS_RE-offset denotes the index of the first frequency domain resource, and i OCC denotes the orthogonal sequence index of the sidelink control channel, and i interlace where i denotes the index of the frequency domain resource of the sidelink control channel, N is the number of RE offsets (i.e., the number of frequency domain resources that can be used for the sidelink positioning reference signal), and M is the number of orthogonal frequency domain resources of the sidelink control channel. interlace = 0, 1,...,M-1, and i OCC = 0, 1, ..., K-1, where K is the number of orthogonal sequences for the sidelink control channel. Δ is an offset, which may be a positive integer greater than or equal to 0 and less than or equal to N-1.

[0427] In some embodiments, the offset Δ may alternatively not be used to determine the index of the first frequency domain resource. In this case, the index of the second frequency domain resource may satisfy the following equation:

number

[0428] i SL-PRS_RE-offset denotes the index of the first frequency domain resource, and i OCC denotes the orthogonal sequence index of the sidelink control channel, and i interlacewhere i denotes the index of the frequency domain resource of the sidelink control channel, N is the number of RE offsets, and M is the number of orthogonal frequency domain resources of the sidelink control channel. interlace = 0, 1,...,M-1, and i OCC = 0, 1, ..., K-1, where K is the number of orthogonal sequences for the sidelink control channel.

[0429] Figure 17 is a diagram showing a case where N is greater than M and code division is performed for the sidelink control channel. As shown in Figure 17, M is equal to 5, N is equal to 8, and K is equal to 2. In this case, there are a total of 10 candidate sidelink control channel resources and a total of 8 candidate reference signal resources, with each candidate reference signal resource corresponding to one candidate control resource.

[0430] In some embodiments, the resources for the sidelink control channel and the resources for the sidelink positioning reference signal are determined based on a resource index.

[0431] The resource index indicates both the resource of the sidelink control channel and the resource of the sidelink positioning reference signal. The maximum value of the resource index may be predefined, preconfigured, or configured by the network device. The resource index may be indicated by a second indication, which is carried in the sidelink control channel.

[0432] Optionally, the resources of the sidelink control channel include frequency domain resources of the sidelink control channel and orthogonal sequences of the sidelink control channel, and the resources of the sidelink positioning reference signal include frequency domain resources of the sidelink positioning reference signal and code resources of the sidelink positioning reference signal.

[0433] The number of orthogonal frequency domain resources of the sidelink control channel is M, and the number of sequences of the sidelink control channel is K. owhere the number of orthogonal frequency domain resources of the sidelink positioning reference signal is N, and the number of sequences of the sidelink positioning reference signal is K s and the maximum number of users supported in each slot is C. In this case, we obtain the corresponding equation:

number

[0434] In some embodiments, K o is smaller than the maximum number of sequences that can be supported. For example, M=5, N=4, and C=10. In this case, K o = 3, and K s = 3. As another example, M = 10, N = 6, and C = 20. In this case, K o = 2, and K s =4.

[0435] 19 is a diagram of resources occupied by the sidelink control channel and the sidelink positioning reference signal. As shown in FIG. 19, M is equal to 5, N is equal to 4, and K o is equal to 3, and K s is equal to 3.

[0436] For example, in some embodiments, K s , K. o , M, N, and C may be configured by a network device (e.g., a base station). In this case, the network device may configure K s The CS of the sequence, a root sequence, or a random sequence value may further be configured.

[0437] For example, in some other embodiments, M, N, and C may be predefined or preconfigured. Similarly, K corresponding to M, N, and C may be s The CS of the sequence, the root sequence, or the random sequence value may be predefined or preconfigured.

[0438] Optionally, in some embodiments, when the resources used to transmit the sidelink control channel are determined based on a resource index, the frequency domain resources may be determined first, and then the code resources are determined.

[0439] For example, in some embodiments, the sidelink control channel frequency domain resource index and the sidelink control channel orthogonal sequence index are determined based on the resource index and the number M of orthogonal frequency domain resources of the sidelink control channel. For example, the sidelink control channel frequency domain resource index and the sidelink control channel orthogonal sequence index may satisfy the following equation:

number

[0440] f PSCCH is the index of the frequency domain resource of the sidelink control channel, and i index is the resource index, and n OCC is the orthogonal sequence index of the sidelink control channel, and floor() indicates truncation.

[0441] As another example, in some other embodiments, the index of the frequency domain resource of the sidelink control channel may be determined based on the resource index, the number M of orthogonal frequency domain resources of the sidelink control channel, and one reference information. The reference information may be one or more of an identifier of the first communication device, an identifier of the second communication device, and an offset. In other words, the index of the frequency domain resource of the sidelink control channel may satisfy any one of the following formulas:

number

[0442] f PSCCHis the index of the frequency domain resource used to transmit the sidelink control channel, and i index is the resource index, and the ID S is all or some bits of the identifier of the first communication device, ID D where m is all or some bits of the identifier of the second communication device, Δ is an offset, and Δ may be a positive integer greater than or equal to 0 and less than or equal to M−1. Δ may be predefined, preconfigured, or configured by the network device.

[0443] Optionally, in some embodiments, the identifier of the communication device may be an international mobile subscriber identification number (IMSI), an international mobile equipment identity, or the like.

[0444] For example, in some embodiments, the index of the second frequency domain resource and the second sequence index are determined based on the resource index and N. The second frequency domain resource is a frequency domain resource of a sidelink positioning reference signal. The second sequence index is used to determine the sidelink positioning reference signal. For example, the index of the second frequency domain resource and the second sequence index may satisfy the following formula:

number

[0445] f RE is the index of the second frequency domain resource, i index is the resource index, and n seq is the second series index, and floor() indicates rounding down.

[0446] As another example, in some other embodiments, the index of the second frequency domain resource may be determined based on the resource index, the number N of orthogonal frequency domain resources of the sidelink positioning reference signal, and one reference information. The reference information may be one or more of an identifier of the first communication device, an identifier of the second communication device, and an offset. In other words, the index of the second frequency domain resource may satisfy any one of the following equations:

number

[0447] f RE is the index of the second frequency domain resource, i index is the resource index, and the ID S is all or some bits of the identifier of the first communication device, ID D where N is all or some bits of the identifier of the second communication device, Δ is an offset, and Δ may be a positive integer greater than or equal to 0 and less than or equal to N−1. Δ may be predefined, preconfigured, or configured by the network device.

[0448] Optionally, in some embodiments, the resource index of the sidelink positioning reference signal is determined based on the resource index of the sidelink control channel and the total number of resources of the sidelink positioning reference signal.

[0449] Optionally, in some embodiments, the resource index i of the sidelink positioning reference signal PRSmay be determined based on the index of the resource used to transmit the sidelink control channel, the total number of resources of the sidelink positioning reference signal, and one reference information. The reference information may be one or more of an identifier of the first communication device, an identifier of the second communication device, and a pre-configured offset. In other words, the resource index i of the sidelink positioning reference signal PRS may satisfy one of the following formulas:

number

[0450] i PRS is the resource index of the sidelink positioning reference signal, and i PSCCH is the resource index of the sidelink control channel, and N PRS is the total number of resources for sidelink positioning reference signals.

[0451] The total number of resources for sidelink positioning reference signals may be predefined, preconfigured, or configured by the network device.

[0452] It can be appreciated that in some embodiments, the resources used to transmit the sidelink control channel may include frequency domain resources and code resources. In this case, the resources used to transmit the sidelink control channel may also be referred to as frequency code resources used to transmit the sidelink control channel. PSCCH is also referred to as a frequency code index or a joint index of the sidelink control channel. Similarly, the resources used to transmit the positioning reference information may include frequency domain resources and code resources. In this case, the resources used to transmit the positioning reference information may also be referred to as frequency code resources used to transmit the positioning reference information. PRSis sometimes referred to as the frequency code index or joint index of the sidelink positioning reference signal.

[0453] The sidelink control channel is the physical sidelink control channel PSCCH.

[0454] The sidelink positioning reference signals in the above-described embodiments may be generated in a conventional manner or in a manner described in the following embodiments.

[0455] FIG. 20 is a schematic flowchart of a method for transmitting a sidelink positioning reference signal according to an embodiment of the present application.

[0456] 2001: A first communication device determines a first sequence parameter.

[0457] Optionally, in some embodiments, the first sequence parameters include at least one of the following: resources of a sidelink control channel, information carried in the sidelink control channel, and resources of a sidelink positioning reference signal. The first sequence parameters are used to generate the sidelink positioning reference signal.

[0458] 2002: A first communication device transmits a sidelink control channel and a sidelink positioning reference signal within a slot.

[0459] The first communication device may first generate a sequence (e.g., a random sequence or a ZC sequence) based on the first sequence parameter, and then determine a sidelink positioning reference signal based on the sequence.

[0460] Correspondingly, the second communication device receives a sidelink control channel and a sidelink positioning reference signal within the slot, where the sidelink positioning reference signal is generated based on a first sequence parameter, the first sequence parameter including at least one of: a resource of the sidelink control channel, information carried in the sidelink control channel, and a resource of the sidelink positioning reference signal, the first sequence parameter being used to generate the sidelink positioning reference signal; and the second communication device performs measurements on the sidelink positioning reference signal to obtain measurement results.

[0461] The time-frequency resources occupied by the sidelink control channel and the sidelink positioning reference signal in the slot are the same as those in the previous embodiment. For example, the sidelink control channel is located before the sidelink positioning reference signal. As another example, the sidelink control channel and the sidelink positioning reference signal are transmitted in the same slot. As another example, the frequency-domain resources of the sidelink positioning reference signal are Y REs out of Y×N REs, where Y is a number greater than 0 and N is a positive integer, and there is one sidelink positioning reference signal per N REs. For specific relationships between the time-frequency resources occupied by the sidelink control channel and the time-frequency resources occupied by the sidelink positioning reference signal, please refer to the previous embodiment. For the sake of brevity, the details will not be described again here.

[0462] Optionally, in some embodiments, the resources of the sidelink positioning reference signals include RE offsets of the sidelink positioning reference signals, the RE offsets indicating the location of the sidelink positioning reference signals for every N REs.

[0463] Optionally, in some embodiments, the resources of the sidelink control channel include at least one of the following: a frequency domain resource index of the sidelink control channel, a sequence parameter index of the sidelink control channel, or a joint resource index of the sidelink control channel, where the joint resource index is determined based on the frequency domain resource index of the sidelink control channel and the sequence parameter index of the control channel.

[0464] Optionally, in some embodiments, the index of the sequence parameters of the sidelink control channel comprises at least one of the following: an orthogonal code index of the sequence parameters of the sidelink control channel, a cyclic shift index of the sequence parameters of the sidelink control channel, and a root sequence number index of the sequence parameters of the sidelink control channel.

[0465] Optionally, in some embodiments, the index of the frequency domain resource of the sidelink control channel may be the interlace number or subchannel number of the frequency domain resource of the sidelink control channel, or may be the highest, lowest or middle number of the orthogonal frequency domain resource of the sidelink control information.

[0466] Optionally, in some embodiments, the orthogonal code index of the sequence parameter of the sidelink control channel may be an index of an orthogonal code sequence for generating a demodulation reference signal (DM-RS) for the sidelink control information. For example, the orthogonal code is assumed to be an orthogonal complementary code (OCC). If the length of the OCC is 3, there are three corresponding sequences as shown in Table 1. [Table 1] [Table 1]

[0467] If the OCC length is 2, the corresponding sequence is the sequence shown in Table 2 or Table 3. [Table 2] [Table 2] [Table 3] [Table 3]

[0468] Optionally, in some embodiments, the joint resource index i r satisfies the following equation: i r =i f ×M s +i s (Formula 2-1)

[0469] i s =0,1,...,M s -1 and i f =0,1,...,M f -1 and M s is the number of parameters in the sequence parameters of the sidelink control channel, and M f is the number of orthogonal resources for the sidelink control channel in the slot.

[0470] Optionally, in some other embodiments, the joint resource index i r satisfies the following equation: i r =i s ×M f +i f (Formula 2-2)

[0471] i s =0,1,...,M s -1 and i f =0,1,...,M f -1 and M s is the number of parameters in the sequence parameters of the sidelink control channel, and M fis the number of orthogonal resources for the sidelink control channel in the slot.

[0472] Optionally, in some embodiments, the information carried in the sidelink control channel includes at least one of the following: an identifier of the first communication device; an identifier of the second communication device, where the second communication device is a receiving device for the positioning reference signal; indication information indicating a geographical location of the first communication device; indication information indicating a geographical location of the second communication device; and indication information for a sequence identifier, where the sequence identifier is used to generate an initial value of the sequence of the positioning reference signal.

[0473] The identifier of the first communication device may be a full or partial identifier of the first communication device, and similarly the identifier of the second communication device may be a full or partial identifier of the second communication device.

[0474] The geographic location indication information of a communication device may be the absolute location of the communication device, e.g., the geographic coordinate information of the communication device; or it may be the relative location of the communication device, e.g., information about the distance and location between the communication device and another communication device; or it may be location information indicated based on the specific accuracy of the communication device, e.g., a zone ID (zone identifier).

[0475] Optionally, in some embodiments, the sequence for generating the sidelink positioning reference signal is a random sequence (e.g., a Gold sequence), and an initial value of the positioning reference signal is generated based on a first sequence parameter.

[0476] In some embodiments, the initial value of the sidelink positioning reference signal c int satisfies the following equation:

number

[0477] Parameter A and / or parameter B are determined based on the first sequence parameter.

[0478] In some embodiments, the parameter A in Equation 2-3 satisfies the following formula:

number

[0479]

number

number

[0480] In some embodiments, the parameter B=N ID or B=2N ID In this case, Equation 2-3 can be expressed by using Equation 2-5 (assuming that parameter A satisfies Equation 2-4):

number

[0481] In some other embodiments, the parameter B=n ID or B=2n ID In this case, Equation 2-3 can be expressed by using Equation 2-6 (assuming that parameter A satisfies Equation 2-4):

number

[0482] The value of m in Equations 2-3 to 2-6 is N ID or n ID is the number of binary bits corresponding to the maximum value of N. ID =216 -1. In this case, m=16. Another example is n ID =2 10 -1. In this case, m=10.

[0483] N ID or n ID may be the first sequence parameter or may be generated based on the first sequence parameter.

[0484] For example, in some embodiments, N ID or n ID may be the interlace number or subchannel number of the frequency domain resource of the sidelink control information, or may be the maximum number, minimum number, or middle number of the orthogonal frequency domain resource of the sidelink control information.

[0485] As another example, in some embodiments, N ID or n ID may be generated based on one or more first sequence parameters. For example, n ID is used as an example. ID may satisfy the following equation:

number

[0486] P is an arbitrary first sequence parameter.

[0487] n in Equation 2-7 ID is generated based on one first sequence parameter. As mentioned above, alternatively, n ID There may be more than one series parameter to generate the ID When used to represent n ID may satisfy one of the following formulas:

number

[0488] p k denotes the first series parameter, and a k is the coefficient of the corresponding sequence parameter. k may be an integer greater than or equal to 0, for example, 0, 1, or 2. In some other embodiments, a k may be a number greater than or equal to 0, for example, 0, 0.1, 0.5, or 1.

[0489] As another example, in some embodiments, the number k is configured or pre-configured in the resource pool (or pre-defined or indicated by the network device):

number

[0490] Parameter B is N ID or n ID and N ID or n ID It is further assumed that n may be generated based on one or more first and second sequence parameters. ID However, it is still used as an example. ID may satisfy the following equation:

number

[0491] i in Equations 2-10 to 2-14 occ , i RE-offset , and i f are all first sequence parameters. For example, i occ is the orthogonal code index of the sidelink control channel, and i RE-offset is the RE offset of the sidelink positioning reference signal, and i f is the index of the frequency domain resource of the sidelink control channel.

[0492] Optionally, in Equations 2-10 through 2-14, n ID is N ID may be replaced with

[0493] Similarly, Equations 2-10 through 2-14 may alternatively be expressed using the following general formula:

number

[0494] p k denotes the first series parameter, and a k is the coefficient of the corresponding sequence parameter. k may be an integer greater than or equal to 0, for example, 0, 1, or 2. In some other embodiments, a k may be a number greater than or equal to 0, for example, 0, 0.1, 0.5, or 1.

[0495] Optionally, in Equations 2-15 and 2-16, n ID is N ID may be replaced with

[0496] Optionally, in some embodiments, both parameter A and parameter B are determined based on the first sequence parameter.

[0497] Optionally, in some embodiments, only one of parameter A and parameter B is determined based on the first sequence parameter, and the other may be indicated by information carried in the sidelink control channel or may be predefined, preconfigured, or configured by the network device.

[0498] Optionally, in some embodiments, the initial value of the sidelink positioning reference signal c int is determined based on the following formula:

number

[0499] At least one of parameter A, parameter B, and parameter C is determined based on the first sequence parameter. Optionally, n and m are positive integers. Optionally, n+m=32.

[0500] Optionally, in some embodiments, parameter A, parameter B, and parameter C are all determined based on the first sequence parameter.

[0501] Optionally, in some embodiments, some of parameters A, B, and C are determined based on the first sequence parameter, while others may be indicated by information carried in the sidelink control channel or may be predefined, preconfigured, or configured by the network device.

[0502] For example, in some embodiments, parameter A satisfies equations 2-4, and parameter B is generated based on the first sequence parameters:

number

number

[0503] Similarly,

number

[0504] Optionally, in some embodiments, the sequence for generating the sidelink positioning reference signal is a Zadoff-Chu (ZC) sequence, and the first sequence parameter is used to generate a root sequence index of the ZC sequence and / or a cyclic shift value of the ZC sequence.

[0505] For example, in some embodiments, the root sequence number of the ZC sequence satisfies one of the following formulas:

number

[0506] u denotes the root sequence number of the ZC sequence, and K denotes the maximum number of constructed root sequences, where K is a positive integer. k denotes the first series parameter, and a k is the coefficient of the corresponding sequence parameter. kmay be an integer greater than or equal to 0, for example, 0, 1, or 2. In some other embodiments, a k may be a number greater than or equal to 0, for example, 0, 0.1, 0.5, or 1.

[0507] For example, in some embodiments, the cyclic shift (CS) values of the ZC sequence are as follows:

number

[0508] CS denotes the cyclic shift value of the ZC sequence, and K denotes the maximum number of CS values that can be configured, where K is a positive integer. k denotes the first series parameter, and a k is the coefficient of the corresponding sequence parameter. k may be an integer greater than or equal to 0, for example, 0, 1, or 2. In some other embodiments, a k may be a number greater than or equal to 0, for example, 0, 0.1, 0.5, or 1.

[0509] After the values of u and CS are determined, the ZC sequence is generated in the following manner:

number

[0510]

number

number

number

[0511] The root sequence numbers are as follows:

number

[0512] Figure 21 is a block diagram of the structure of a communication device according to one embodiment of the present application. The communication device 2100 shown in Figure 21 includes a processing module 2101 and a transmitting module 2102. The processing module 2101 may be implemented by using a processor, and the transmitting module 2102 may be implemented by using a transmitter. The communication device 2100 may implement the functions of the first communication device in the foregoing embodiment.

[0513] For example, in some embodiments, the processing module 2101 is configured to determine at least one of the following information: a frequency domain resource of a sidelink positioning reference signal and a sequence parameter of a sidelink positioning reference signal, where said information is associated with a sidelink control channel, and the transmission module 2102 is configured to transmit the sidelink control channel and the sidelink positioning reference signal in a slot based on said information.

[0514] As another example, in some embodiments, the processing module 2101 is configured to determine configuration information, where the configuration information indicates at least one of the following information: a number of symbols occupied by the sidelink control information, a frequency domain bandwidth occupied by the sidelink control information, a number of symbols occupied by the sidelink positioning reference signal, and a mapping interval of the sidelink positioning reference signal in the frequency domain. The transmission module 2102 is configured to transmit the sidelink positioning information in the slots, where the sidelink positioning information is generated based on the configuration information and includes the sidelink control information and the sidelink positioning reference signal.

[0515] As another example, in some embodiments, the processing module 2101 is configured to determine first sequence parameters, where the first sequence parameters include at least one of the following: resources of a sidelink control channel, information carried in the sidelink control channel, and resources of a sidelink positioning reference signal, and the first sequence parameters are used to generate the sidelink positioning reference signal. The transmission module 2102 is configured to transmit the sidelink control channel and the sidelink positioning reference signal in the slot.

[0516] Please refer to the above embodiments for the specific functions and benefits of the processing module 2101 and the sending module 2102. For the sake of brevity, the details will not be described again here.

[0517] 22 is a block diagram of the structure of another communication device according to an embodiment of the present application. The communication device 2200 shown in FIG. 22 includes a receiving module 2201 and a processing module 2202. The receiving module 2201 may be implemented by using a receiver, and the processing module 2202 may be implemented by using a processor. The communication device 2200 may implement the functions of the second communication device in the foregoing embodiment.

[0518] For example, in some embodiments, the receiving module 2201 is configured to receive a sidelink control channel within a slot. The processing module 2202 is configured to determine at least one of the following information: a frequency domain resource of a sidelink positioning reference signal and a sequence parameter of a sidelink positioning reference signal, where the information is associated with the sidelink control channel. The receiving module 2201 is further configured to receive a sidelink positioning reference signal within the slot based on the information.

[0519] As another example, in some embodiments, the receiving module 2201 is configured to receive sidelink positioning information within a slot, where the sidelink positioning information is generated based on configuration information, the sidelink positioning information including sidelink control information and sidelink positioning reference signals, the configuration information indicating at least one of the following information: a number of symbols occupied by the sidelink control information, a frequency domain bandwidth occupied by the sidelink control information, a number of symbols occupied by the sidelink positioning reference signals, and a mapping interval of the sidelink positioning reference signals in the frequency domain. The processing module 2202 is configured to perform measurements on the sidelink positioning reference signals to obtain measurement results.

[0520] As another example, in some embodiments, the receiving module 2201 is configured to receive a sidelink control channel and a sidelink positioning reference signal within a slot, where the sidelink positioning reference signal is generated based on a first sequence parameter, the first sequence parameter including at least one of the following: resources of the sidelink control channel, information carried in the sidelink control channel, and resources of the sidelink positioning reference signal, the first sequence parameter being used to generate the sidelink positioning reference signal. The processing module 2202 is configured to perform measurements on the sidelink positioning reference signal to obtain measurement results.

[0521] Please refer to the above embodiments for the specific functions and benefits of the receiving module 2201 and the processing module 2202. For the sake of brevity, the details will not be described again here.

[0522] 23 is a block diagram of the structure of a communication device according to one embodiment of the present application. The communication device 2300 shown in FIG. 23 includes a processor 2301. The processor 2301 may be configured to process communication protocols and communication data, control the communication device, execute software programs, process data of the software programs, etc.

[0523] Optionally, the communication device 2300 may further comprise a memory 2302. The memory 2302 is primarily configured to store software programs and data.

[0524] Optionally, the communications device 2300 may further comprise a transceiver 2303. The transceiver may also be referred to as a transceiver unit, a transceiver device, a transceiver apparatus, etc. Optionally, a component in the transceiver 2303 for performing a receiving function may be considered a receiving module, and a component in the transceiver 2303 for performing a transmitting function may be considered a transmitting module. In other words, the transceiver 2303 includes a receiving module and a transmitting module. The receiving module may also be referred to as a receiving device, a receiver, a receiver circuit, etc. The transmitting module may also be referred to as a transmitting device, a transmitter, a transmitter circuit, etc.

[0525] Optionally, the communications apparatus 2300 may be a terminal device or an apparatus (eg, a chip or circuit) used for a terminal device.

[0526] Optionally, the communications device 2300 may be a network device or a device (eg, a chip or circuit) used for a network device.

[0527] If the communication device 2300 is a terminal device or a network device, the communication device 2300 may further include a radio frequency circuit and an antenna. The radio frequency circuit is mainly configured to perform conversion between baseband signals and radio frequency signals and process the radio frequency signals. The antenna is mainly configured to transmit and receive radio frequency signals in the form of electromagnetic waves. The antenna and the radio frequency circuit with transceiver function may be considered as a transceiver 2303 of the communication device 2300.

[0528] If the communication device 2300 is a device (e.g., a chip or a circuit) used for a terminal device or a network device, the communication device 2300 may further include an input / output interface. The input / output interface may be configured to acquire data and transmit the acquired data to the processor 2301 and / or the memory 2302. The input / output interface may be further configured to transmit data generated by the processor 2301 to another device.

[0529] For ease of explanation, FIG. 23 shows only one memory and one processor. In an actual product, one or more processors and one or more memories may exist. The memory may also be referred to as a storage medium, a storage device, or the like. The memory may be located independently of the processor or integrated with the processor. This is not limited to this embodiment of the present application.

[0530] The processor 2301, memory 2302, and transceiver 2303 communicate with each other through interconnection paths to transmit control and / or data signals.

[0531] The methods disclosed in the above-described embodiments of the present invention may be used in or performed by the processor 2301. The processor 2301 may be an integrated circuit chip and has signal processing capabilities. In implementation, the steps of the above-described methods may be performed by integrated logic circuitry in hardware within the processor 2301 or by using instructions in the form of software.

[0532] The processor in the embodiments of the present application may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. The processor may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor, etc. The steps of the methods disclosed with reference to the embodiments of the present invention may be performed directly by a hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium mature in the art, such as a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read-only memory, an electrically erasable programmable memory, or a register. The storage medium is located in the memory, and the processor reads the instructions in the memory and performs the steps of the aforementioned method based on the processor's hardware.

[0533] Optionally, in some embodiments, the memory 2302 may store instructions for executing the method performed by the first communication device in the aforementioned method. The processor 2301 may execute the instructions stored in the memory 2302 to perform the steps performed by the first communication device in the aforementioned method in combination with other hardware (e.g., the transceiver 2303). For specific operation processes and benefits of the processor 2301, please refer to the descriptions in the aforementioned method embodiments. If the communication apparatus 2300 does not include the memory 2302, the processor 2301 may be coupled to a memory that stores instructions for executing the method performed by the first communication device in the aforementioned method.

[0534] Optionally, in some embodiments, the memory 2302 may store instructions for executing the method performed by the second communication device in the aforementioned method. The processor 2301 may execute the instructions stored in the memory 2302 to perform the steps performed by the second communication device in the aforementioned method in combination with other hardware (e.g., the transceiver 903). For specific operation processes and benefits of the processor 2301, please refer to the descriptions in the aforementioned method embodiments. If the communication apparatus 2300 does not include the memory 2302, the processor 2301 may be coupled to a memory that stores instructions for executing the method performed by the second communication device in the aforementioned method.

[0535] An embodiment of the present application further provides a chip system, the chip system including a logic circuit, the logic circuit coupled to an input / output interface and configured to transmit data through the input / output interface, the chip system may perform the method for the first communication device in the above-described method embodiment.

[0536] An embodiment of the present application further provides a computer-readable storage medium, which stores instructions that, when executed, perform the method for the first communication device in the aforementioned method embodiment.

[0537] An embodiment of the present application further provides a computer program product including instructions that, when executed, cause the method to be performed by the first communication device in the aforementioned method embodiments to be performed.

[0538] An embodiment of the present application further provides a chip system, the chip system including a logic circuit, the logic circuit coupled to an input / output interface and configured to transmit data through the input / output interface, the chip system may perform the method for the second communication device in the above-described method embodiment.

[0539] An embodiment of the present application further provides a computer-readable storage medium, which stores instructions that, when executed, perform the method for the second communication device in the aforementioned method embodiment.

[0540] An embodiment of the present application further provides a computer program product including instructions that, when executed, cause the method to be performed by the second communication device in the aforementioned method embodiments to be performed.

[0541] Those skilled in the art may recognize that the units and algorithm steps in the examples described with reference to the embodiments disclosed herein may be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether a function is performed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementations should not be considered to go beyond the scope of this application.

[0542] For ease and simplicity of description, those skilled in the art can clearly understand that the detailed working processes of the above-mentioned systems, devices and units can be referred to the corresponding processes in the above-mentioned method embodiments, and the details will not be described again here.

[0543] In the embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the described device embodiments are merely examples. For example, the division into multiple units is merely a logical division of function, and other divisions may be used in actual implementations. For example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented. In addition, the illustrated or described mutual couplings or direct couplings or communication connections may be implemented through some interfaces. Indirect couplings or communication connections of devices or units may be implemented electrically, mechanically, or in other forms.

[0544] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, specifically, may be located in one place or distributed over multiple network units. Some or all of the units may be selected according to actual requirements to achieve the objectives of the solutions of the embodiments.

[0545] Furthermore, the functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist physically alone, or two or more units may be integrated into one unit.

[0546] When the functions are implemented in the form of a software functional unit and sold or used as an independent product, the functions may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application may essentially be implemented in the form of a software product, or a portion of the technical solutions 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, a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. The storage medium includes any medium capable of storing program code, such as a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or a compact disk.

[0547] The above description is merely a specific embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modifications or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application shall be included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims. 。 [Item 1] 1. A method for transmitting a sidelink positioning reference signal, comprising: determining, by the first communication device, at least one of the following information: frequency domain resources of the sidelink positioning reference signal or sequence parameters of the sidelink positioning reference signal, wherein the information is associated with a sidelink control channel; and transmitting, by the first communication device, the sidelink control channel and the sidelink positioning reference signal in slots based on the information. A method comprising: [Item 2] Item 1. The method of item 1, wherein the sidelink control channel and the sidelink positioning reference signal are transmitted in the same slot. [Item 3] 3. The method of claim 1 or 2, wherein the sidelink control channel is located in the slot before the sidelink positioning reference signal. [Item 4] 4. The method according to claim 1, wherein the resources of the sidelink positioning reference signal in each symbol are Y resource elements (RE) out of Y×N resource elements (RE), one out of every N REs is occupied by the sidelink positioning reference signal, Y being a number greater than 0 and N being a positive integer. [Item 5] The information is associated with a sidelink control channel. the information is carried in the sidelink control channel; and / or the information is determined based on frequency domain resources and / or sequence parameters of the sidelink control channel. Item 5. The method according to item 4, comprising: [Item 6] 6. The method of claim 5, wherein the information further includes the sequence parameters of the sidelink control channel. [Item 7] 7. The method of claim 6, wherein the sequence parameters of the sidelink control channel include at least one of the following information: a cyclic shift CS value of the sidelink control channel, a root sequence index of the sidelink control channel, or an orthogonal sequence index of the sidelink control channel. [Item 8] 8. The method according to claim 5, wherein the sequence parameters of the SLRS include at least one of the following information: a cyclic shift CS value of the SLRS, a root sequence index of the SLRS, an orthogonal sequence index of the SLRS, or a parameter for generating an initial value of the sequence of the SLRS. [Item 9] 9. The method according to claim 5, wherein an index of a first frequency domain resource and / or a first sequence index is determined based on an index of the frequency domain resource of the sidelink control channel, the first frequency domain resource being a frequency domain resource of the sidelink positioning reference signal and the first sequence index corresponds to a sequence parameter for determining the sidelink positioning reference signal. [Item 10] 10. The method of claim 9, wherein the index of the first frequency domain resource and the first sequence index are determined based on N and the index of the frequency domain resource of the sidelink control channel. [Item 11] 10. The method of claim 9, wherein the index of the first frequency domain resource and / or the first sequence index is determined based on the index of the frequency domain resource of the sidelink control channel and the orthogonal sequence index of the sidelink control channel. [Item 12] 12. The method of claim 11, wherein the index of the first frequency domain resource and the first sequence parameter are determined based on the index of the frequency domain resource of the sidelink control channel, the orthogonal sequence index of the sidelink control channel, the number M of orthogonal frequency domain resources of the sidelink control channel, and N. [Item 13] 9. The method according to any one of claims 5 to 8, wherein the resources of the sidelink control channel and the resources of the sidelink positioning reference signal are determined based on a resource index. [Item 14] the resources of the sidelink control channel include the frequency domain resources of the sidelink control channel and the sequence parameters of the sidelink control channel; The resources of the sidelink positioning reference signal include the frequency domain resources of the sidelink positioning reference signal and the sequence parameters of the sidelink positioning reference signal. Item 14. The method according to item 13. [Item 15] Item 15. The method of item 13 or 14, wherein the maximum value of the resource index is predefined, preconfigured, or configured by the network device. [Item 16] 16. The method of claim 13, wherein the sidelink control channel is further used to carry second indication information, the second indication information indicating the resource index. [Item 17] 17. The method according to claim 13, wherein the index of the frequency domain resource of the sidelink control channel and the orthogonal sequence index of the sidelink control channel are determined based on the resource index and the number M of orthogonal frequency domain resources of the sidelink control channel. [Item 18] Item 18. The method of item 17, wherein the index of the frequency domain resource of the sidelink control channel is determined based on the resource index, the number M of orthogonal frequency domain resources of the sidelink control channel, and first reference information, the first reference information including at least one of the following information: an identifier of the first communication device, an identifier of a second communication device, and a first offset, the first offset being a positive integer greater than or equal to 0 and less than M. [Item 19] 19. The method of claim 13, wherein an index of a second frequency domain resource and a second sequence index are determined based on the resource index and N, where the second frequency domain resource is a frequency domain resource of the sidelink positioning reference signal and the second sequence index corresponds to a sequence parameter for determining the sidelink positioning reference signal. [Item 20] 20. The method of claim 19, wherein the index of the second frequency domain resource is determined based on the resource index, N, and second reference information, the second reference information including at least one of the following information: the identifier of the first communication device, the identifier of the second communication device, and a second offset, the second offset being a positive integer greater than or equal to 0 and less than N. [Item 21] 21. The method according to claim 13, wherein the resource index of the SLRS is determined based on the resource index of the SLCS and the total number of resources of the SLRS. [Item 22] 22. The method of claim 21, wherein the resource index of the SLRS is determined based on the resource index of the SLRC, the total number of resources of the SLRS, and third reference information, the third reference information including at least one of the following information: the identifier of the first communication device, the identifier of the second communication device, and a third offset, the third offset being a positive integer greater than or equal to 0 and less than T, where T is the total number of resources of the SLRS. [Item 23] 23. The method according to any one of claims 1 to 22, wherein the sidelink control channel is a physical sidelink control channel PSCCH. [Item 24] 1. A method for transmitting a sidelink positioning reference signal, comprising: receiving, by a second communication device, a sidelink control channel in the slot; determining, by the second communication device, at least one of the following information: a frequency domain resource of the sidelink positioning reference signal and a sequence parameter of the sidelink positioning reference signal, wherein the information is associated with the sidelink control channel; and receiving, by the second communication device, the sidelink positioning reference signal in the slot based on the information. A method comprising: [Item 25] 25. The method of claim 24, wherein the sidelink control channel and the sidelink positioning reference signal are received in the same slot. [Item 26] 26. The method of claim 24 or 25, wherein the sidelink control channel is located in the slot before the sidelink positioning reference signal. [Item 27] 27. The method of any one of items 24 to 26, wherein the resources of the sidelink positioning reference signal in each symbol are Y resource elements RE out of a Y×N number of resource elements RE, one out of every N REs is occupied by the sidelink positioning reference signal, Y is a number greater than 0, and N is a positive integer. [Item 28] The information is associated with a sidelink control channel. the information is carried in the sidelink control channel; and / or the information is determined based on frequency domain resources and / or sequence parameters of the sidelink control channel. Item 28. The method according to Item 27, comprising: [Item 29] 29. The method of claim 28, wherein the information further includes the sequence parameters of the sidelink control channel. [Item 30] 30. The method of claim 29, wherein the sequence parameters of the sidelink control channel include at least one of the following information: a cyclic shift CS value of the sidelink control channel, a root sequence index of the sidelink control channel, or an orthogonal sequence index of the sidelink control channel. [Item 31] 31. The method according to any one of claims 28 to 30, wherein the sequence parameters of the SLRS include at least one of the following information: a cyclic shift CS value of the SLRS, a root sequence index of the SLRS, an orthogonal sequence index of the SLRS, or a parameter for generating an initial value of the sequence of the SLRS. [Item 32] 32. The method of claim 28, wherein a first frequency domain resource index and / or a first sequence index is determined based on an index of the frequency domain resource of the sidelink control channel, the first frequency domain resource being a frequency domain resource of the sidelink positioning reference signal and the first sequence index corresponds to a sequence parameter for determining the sidelink positioning reference signal. [Item 33] Item 33. The method of item 32, wherein the index of the first frequency domain resource and the first sequence index are determined based on N and the index of the frequency domain resource of the sidelink control channel. [Item 34] 33. The method of claim 32, wherein the index of the first frequency domain resource and / or the first sequence index is determined based on the index of the frequency domain resource of the sidelink control channel and the orthogonal sequence index of the sidelink control channel. [Item 35] 35. The method of claim 34, wherein the index of the first frequency domain resource and the first sequence parameter are determined based on the index of the frequency domain resource of the sidelink control channel, the orthogonal sequence index of the sidelink control channel, the number M of orthogonal frequency domain resources of the sidelink control channel, and N. [Item 36] 32. The method according to any one of claims 28 to 31, wherein the resources of the sidelink control channel and the resources of the sidelink positioning reference signal are determined based on a resource index. [Item 37] 1. A communication device, comprising: A module configured to carry out the method according to any one of items 1 to 23; or A module configured to perform the method according to any one of items 24 to 36. A communication device comprising: [Item 38] Processor and Memory A communication device comprising: the memory configured to store a computer program; The processor is configured to execute the computer program stored in the memory so that the communication device performs the method according to any one of items 1 to 23 or the method according to any one of items 24 to 36. Communication equipment. [Item 39] 37. A computer-readable storage medium storing instructions that, when executed on a computer, enable the computer to perform the method of any one of items 1 to 23 or the method of any one of items 24 to 36. [Item 40] A chip system comprising a logic circuit coupled to an input / output interface and configured to transmit data through the input / output interface to perform the method according to any one of items 1 to 23 or the method according to any one of items 24 to 36. [Item 41] 37. A computer program product comprising computer program code, which, when executed on a computer, enables the computer to carry out the method according to any one of items 1 to 23 or the method according to any one of items 24 to 36.

Claims

1. 1. A method for transmitting a sidelink positioning reference signal, comprising: determining, by the first communication device, at least one of the following information: frequency domain resources of the sidelink positioning reference signal or sequence parameters of the sidelink positioning reference signal, wherein the information is associated with a sidelink control channel; and transmitting, by the first communication device, the sidelink control channel and the sidelink positioning reference signal in slots based on the information. A method comprising:

2. 2. The method of claim 1, wherein the sidelink control channel and the sidelink positioning reference signal are transmitted in the same slot.

3. 3. The method of claim 1, wherein the sidelink control channel is positioned in the slot before the sidelink positioning reference signal.

4. 4. The method according to claim 1, wherein the resources of the sidelink positioning reference signal in each symbol are Y resource elements (REs) out of Y×N resource elements (REs), one out of every N REs is occupied by the sidelink positioning reference signal, Y being a number greater than 0 and N being a positive integer.

5. The information is associated with a sidelink control channel. the information is carried in the sidelink control channel; and / or the information is determined based on frequency domain resources and / or sequence parameters of the sidelink control channel. The method of claim 4, comprising:

6. 6. The method of claim 5, wherein the information further comprises the sequence parameters of the sidelink control channel.

7. 7. The method of claim 6, wherein the sequence parameters of the sidelink control channel comprise at least one of the following information: a cyclic shift CS value of the sidelink control channel, a root sequence index of the sidelink control channel, or an orthogonal sequence index of the sidelink control channel.

8. 8. The method according to claim 5, wherein the sequence parameters of the sidelink positioning reference signal comprise at least one of the following information: a cyclic shifted CS value of the sidelink positioning reference signal, a root sequence index of the sidelink positioning reference signal, an orthogonal sequence index of the sidelink positioning reference signal, or a parameter for generating an initial value of the sequence of the sidelink positioning reference signal.

9. 9. The method according to claim 5, wherein an index of a first frequency domain resource and / or a first sequence index is determined based on an index of the frequency domain resource of the sidelink control channel, the first frequency domain resource being a frequency domain resource of the sidelink positioning reference signal and the first sequence index corresponds to a sequence parameter for determining the sidelink positioning reference signal.

10. 10. The method of claim 9, wherein the index of the first frequency domain resource and the first sequence index are determined based on N and the index of the frequency domain resource of the sidelink control channel.

11. 10. The method of claim 9, wherein the index of the first frequency domain resource and / or the first sequence index is determined based on the index of the frequency domain resource of the sidelink control channel and the orthogonal sequence index of the sidelink control channel.

12. 12. The method of claim 11 , wherein the index of the first frequency domain resource and the first sequence parameter are determined based on the index of the frequency domain resource of the sidelink control channel, the orthogonal sequence index of the sidelink control channel, the number M of orthogonal frequency domain resources of the sidelink control channel, and N.

13. 9. The method according to claim 5, wherein the resources of the sidelink control channel and the resources of the sidelink positioning reference signal are determined based on a resource index.

14. the resources of the sidelink control channel include the frequency domain resources of the sidelink control channel and the sequence parameters of the sidelink control channel; The resources of the sidelink positioning reference signal include the frequency domain resources of the sidelink positioning reference signal and the sequence parameters of the sidelink positioning reference signal. The method of claim 13.

15. 15. The method of claim 13 or 14, wherein the maximum value of the resource index is predefined, preconfigured, or configured by a network device.

16. 16. The method of claim 13, wherein the sidelink control channel is further used to carry second indication information, the second indication information indicating the resource index.

17. 17. The method of claim 13, wherein the index of the frequency domain resource of the sidelink control channel and the orthogonal sequence index for the sidelink control channel are determined based on the resource index and the number M of orthogonal frequency domain resources for the sidelink control channel.

18. 18. The method of claim 17, wherein the index of the frequency domain resource of the sidelink control channel is determined based on the resource index, the number M of orthogonal frequency domain resources of the sidelink control channel, and first reference information, the first reference information including at least one of the following information: an identifier of the first communication device, an identifier of a second communication device, and a first offset, the first offset being a positive integer greater than or equal to 0 and less than M.

19. 19. The method of claim 13, wherein an index of a second frequency domain resource and a second sequence index are determined based on the resource index and N, wherein the second frequency domain resource is a frequency domain resource of the sidelink positioning reference signal and the second sequence index corresponds to a sequence parameter for determining the sidelink positioning reference signal.

20. 20. The method of claim 19, wherein the index of the second frequency domain resource is determined based on the resource index, N, and second reference information, the second reference information including at least one of the following information: the identifier of the first communication device, the identifier of the second communication device, and a second offset, wherein the second offset is a positive integer greater than or equal to 0 and less than N.

21. 21. The method according to claim 13, wherein the resource index of the sidelink positioning reference signal is determined based on the resource index of the sidelink control channel and the total number of resources of the sidelink positioning reference signal.

22. 22. The method of claim 21 , wherein the resource index of the sidelink positioning reference signal is determined based on the resource index of the sidelink control channel, the total number of resources of the sidelink positioning reference signal, and third reference information, the third reference information including at least one of the following information: the identifier of the first communication device, the identifier of the second communication device, and a third offset, the third offset being a positive integer greater than or equal to 0 and less than T, where T is the total number of resources of the sidelink positioning reference signal.

23. 23. The method according to claim 1, wherein the sidelink control channel is a physical sidelink control channel PSCCH.

24. 1. A method for transmitting a sidelink positioning reference signal, comprising: receiving, by a second communication device, a sidelink control channel in the slot; determining, by the second communication device, at least one of the following information: a frequency domain resource of the sidelink positioning reference signal and a sequence parameter of the sidelink positioning reference signal, wherein the information is associated with the sidelink control channel; and receiving, by the second communication device, the sidelink positioning reference signal in the slot based on the information. A method comprising:

25. 25. The method of claim 24, wherein the sidelink control channel and the sidelink positioning reference signal are received in the same slot.

26. 26. The method of claim 24 or 25, wherein the sidelink control channel is positioned in the slot before the sidelink positioning reference signal.

27. 27. The method according to claim 24, wherein the resources of the sidelink positioning reference signal in each symbol are Y resource elements (REs) out of Y×N resource elements (REs), one out of every N REs is occupied by the sidelink positioning reference signal, Y being a number greater than 0 and N being a positive integer.

28. The information is associated with a sidelink control channel. the information is carried in the sidelink control channel; and / or the information is determined based on frequency domain resources and / or sequence parameters of the sidelink control channel.

28. The method of claim 27, comprising:

29. 29. The method of claim 28, wherein the information further comprises the sequence parameters of the sidelink control channel.

30. 30. The method of claim 29, wherein the sequence parameters of the sidelink control channel comprise at least one of the following information: a cyclic shift CS value of the sidelink control channel, a root sequence index of the sidelink control channel, or an orthogonal sequence index of the sidelink control channel.

31. 31. The method according to claim 28, wherein the sequence parameters of the sidelink positioning reference signal comprise at least one of the following information: a cyclic shifted CS value of the sidelink positioning reference signal, a root sequence index of the sidelink positioning reference signal, an orthogonal sequence index of the sidelink positioning reference signal, or a parameter for generating an initial value of the sequence of the sidelink positioning reference signal.

32. 32. The method according to claim 28, wherein an index of a first frequency domain resource and / or a first sequence index is determined based on an index of the frequency domain resource of the sidelink control channel, the first frequency domain resource being a frequency domain resource of the sidelink positioning reference signal and the first sequence index corresponding to a sequence parameter for determining the sidelink positioning reference signal.

33. 33. The method of claim 32, wherein the index of the first frequency domain resource and the first sequence index are determined based on N and the index of the frequency domain resource of the sidelink control channel.

34. 33. The method of claim 32, wherein the index of the first frequency domain resource and / or the first sequence index is determined based on the index of the frequency domain resource of the sidelink control channel and the orthogonal sequence index of the sidelink control channel.

35. 35. The method of claim 34, wherein the index of the first frequency domain resource and the first sequence parameter are determined based on the index of the frequency domain resource of the sidelink control channel, the orthogonal sequence index of the sidelink control channel, the number M of orthogonal frequency domain resources of the sidelink control channel, and N.

36. 32. The method according to claim 28, wherein the resources of the sidelink control channel and the resources of the sidelink positioning reference signal are determined based on a resource index.

37. 1. A communication device, comprising: A module configured to perform the method of any one of claims 1 to 23; or A module configured to carry out the method of any one of claims 24 to 36. A communication device comprising:

38. Processor and Memory A communication device comprising: the memory configured to store a computer program; The processor is configured to execute the computer program stored in the memory such that the communication device performs the method of any one of claims 1 to 23 or the method of any one of claims 24 to 36. Communication equipment.

39. 37. A computer readable storage medium storing instructions that, when executed on a computer, enable the computer to perform the method of any one of claims 1 to 23 or any one of claims 24 to 36.

40. A chip system comprising a logic circuit coupled to an input / output interface and configured to transmit data through the input / output interface to perform the method of any one of claims 1 to 23 or any one of claims 24 to 36.

41. 37. A computer program product comprising computer program code, which, when run on a computer, enables the computer to carry out the method of any one of claims 1 to 23 or any one of claims 24 to 36.

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