Communication method, communication apparatus, and communication system

Abstract

A communication method, a communication apparatus, and a communication system, which are applied to the technical field of communications. The method comprises: a first communication apparatus sending a physical sidelink control channel (PSCCH) on the basis of a first time domain resource and a first frequency domain resource, and correspondingly, a second communication apparatus receiving the PSCCH on the basis of the first time domain resource and the first frequency domain resource; and the first communication apparatus sending a first positioning reference signal on the basis of the first time domain resource and a second frequency domain resource, and correspondingly, the second communication apparatus receiving the first positioning reference signal on the basis of the first time domain resource and the second frequency domain resource, wherein the first frequency domain resource and the second frequency domain resource are frequency domain resources in a resource set. By means of the embodiments of the present application, an OCB requirement of an unlicensed spectrum can be met, so that a method based on sidelink positioning can be applied to the unlicensed spectrum.

Description

Communication method, communication device and communication system

[0001] This application claims priority to the Chinese patent application with application number 202311849314.4 filed with the State Intellectual Property Office of China on December 28, 2023, and priority to the Chinese patent application with the invention name “Communication Method, Communication Device and Communication System”, all contents of which are incorporated by reference into this application. Technical Field

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

[0003] In unlicensed spectrum transmission, the terminal device can select a physical resource in the resource pool for data transmission, and the data sent by the terminal device on the physical resource must meet the transmission bandwidth requirement (OCB, Occupied Channel Bandwidth), for example, a data transmission must occupy at least 80% of the total bandwidth.

[0004] In a communication system based on sidelink positioning, terminal devices can measure each other through sidelinks to achieve mutual positioning between terminal devices. For example, the terminal device can send or receive a physical sidelink control channel (PSCCH) and a positioning reference signal (PRS) based on a dedicated resource pool, and the PSCCH carries the control information of the PRS. In order to support multi-user multiplexing, different terminal devices send PSCCH in a frequency division manner, that is, different terminal devices can send PSCCH on the same time domain resources and different frequency domain resources.

[0005] However, the above sidelink positioning-based method does not meet the OCB requirements of unlicensed spectrum and cannot be applied to unlicensed spectrum. Summary of the Invention

[0006] The embodiments of the present application provide a communication method, a communication device, and a communication system that can meet the OCB requirements of unlicensed spectrum, so that the sidelink positioning method can be applied to the unlicensed spectrum.

[0007] In a first aspect, an embodiment of the present application provides a communication method, which is applied to a first communication device. It is understood that the method can be executed by the first communication device, or a chip (system) or circuit used for the first communication device, and this application does not limit this. The method includes:

[0008] A physical sidelink control channel PSCCH is sent based on first time domain resources and first frequency domain resources; a first positioning reference signal is sent based on the first time domain resources and second frequency domain resources, and the first frequency domain resources and the second frequency domain resources are frequency domain resources in a resource set.

[0009] In an embodiment of the present application, the resource set may be a resource set used for positioning. For example, in a scenario based on unlicensed spectrum communication, the resource set includes resources occupied from the unlicensed spectrum resource pool after the first communication device or the second communication device successfully completes LBT. In an embodiment of the present application, the first positioning reference signal can be transmitted using frequency domain resources not occupied by the PSCCH in the resource set to meet the OCB requirements of the unlicensed spectrum, so that the sidelink positioning method can be applied to the unlicensed spectrum.

[0010] In combination with the first aspect, in a possible implementation manner, the sum of the bandwidths occupied by the first frequency domain resources and the second frequency domain resources is greater than or equal to a first threshold, and the first threshold is determined by the bandwidth of the resource set.

[0011] In an embodiment of the present application, the first threshold may be determined by the bandwidth of the resource set and the OCB requirement of the unlicensed spectrum. For example, if the OCB requirement of the unlicensed spectrum is that a single data transmission must occupy at least 80% of the total bandwidth, then the first threshold is 80% of the bandwidth of the resource set. Determining the bandwidth of the first frequency domain resource and the second frequency domain resource based on the bandwidth of the resource set can ensure that the OCB requirement of the unlicensed spectrum is met when the first communication device transmits the first positioning reference signal and the PSCCH.

[0012] In combination with the first aspect, in a possible implementation manner, the sum of the bandwidths occupied by the first frequency domain resources and the second frequency domain resources is equal to the bandwidth of the resource set.

[0013] In the embodiment of the present application, the first positioning reference signal and the PSCCH can fully occupy the resource set, thereby making full use of the resources.

[0014] In combination with the first aspect, in a possible implementation, the first frequency domain resources include one or more frequency domain resource subsets, the second frequency domain resources include one or more frequency domain resource subsets, and the first frequency domain resources and the second frequency domain resources include different frequency domain resource subsets.

[0015] In an embodiment of the present application, a resource set may include multiple frequency domain resource subsets. Each frequency domain resource subset may be a basic bandwidth in the resource set. For example, the frequency domain resources in the resource set may be allocated at a granularity of a frequency domain resource subset. Exemplarily, the frequency domain resource subset may be a set of RBs in an unlicensed spectrum. In this implementation, frequency domain resources are allocated to the first positioning reference signal and the PSCCH at a granularity of a frequency domain resource subset, making frequency domain resource allocation more reasonable.

[0016] In combination with the first aspect, in a possible implementation method, the resource units used to transmit the first positioning reference signal are distributed in a comb-tooth structure on the first frequency domain subset and the first time domain resources, and the first frequency domain resource subset is any one of the one or more frequency domain resource subsets contained in the second frequency domain resources.

[0017] In an embodiment of the present application, the second frequency domain resources include one or more frequency domain resource subsets, and the resource units used to transmit the first positioning reference signal can be configured with the frequency domain resource subset as the granularity, so that the distribution of the resource units used to transmit the first positioning reference signal is more reasonable.

[0018] With reference to the first aspect, in a possible implementation manner, resource units used to transmit the first positioning reference signal are distributed in a comb-tooth structure on the second frequency domain resources and the first time domain resources.

[0019] In the embodiment of the present application, the second frequency domain resource can be regarded as a whole, and the resource unit used to transmit the first positioning reference signal can be configured based on the second frequency domain resource, so that the configuration of the resource unit is simpler.

[0020] In combination with the first aspect, in a possible implementation method, the PSCCH carries control information of a second positioning reference signal, the second positioning reference signal is transmitted on a third frequency domain resource and a second time domain resource, the third frequency domain resource and the second time domain resource are included in the resource set, and the comb tooth value corresponding to the first positioning reference signal is the same as the comb tooth value corresponding to the second positioning reference signal.

[0021] In an embodiment of the present application, the comb tooth values ​​of the first positioning reference signal and the second positioning reference signal are the same, so that the first positioning reference signal can use the configuration of the comb tooth value of the second positioning reference signal without repeatedly configuring the comb tooth value of the first positioning reference signal, which can reduce signaling overhead.

[0022] In combination with the first aspect, in a possible implementation method, the PSCCH carries control information of a second positioning reference signal, the second positioning reference signal is transmitted on a third frequency domain resource and a second time domain resource, and the third frequency domain resource and the second time domain resource are included in the resource set; the transmission power of the PSCCH or the first positioning reference signal is related to the transmission power of the second positioning reference signal.

[0023] In the embodiment of the present application, the transmit power of the PSCCH, the first positioning reference signal, or the second positioning reference signal can be understood as the transmit power of the PSCCH, the first positioning reference signal, or the second positioning reference signal at a transmission opportunity or a time domain unit (such as a symbol). It can be understood that adjusting the transmit power of the PSCCH and the first positioning reference signal based on the transmit power of the second positioning reference signal can ensure power control consistency between symbols and ensure reliable transmission of the PSCCH and the first positioning reference signal.

[0024] With reference to the first aspect, in a possible implementation manner, the transmit power of the PSCCH is related to the transmit power of the second positioning reference signal and the number of frequency domain units included in the first frequency domain resources.

[0025] In the embodiment of the present application, the greater the number of frequency domain units included in the first frequency domain resource, the greater the transmission power of the PSCCH, thereby ensuring the energy per resource element (EPRE) of the PSCCH and ensuring reliable transmission of the PSCCH.

[0026] With reference to the first aspect, in a possible implementation manner, the sum of the transmit power of the PSCCH and the transmit power of the first positioning reference signal is equal to the transmit power of the second positioning reference signal.

[0027] In an embodiment of the present application, the sum of the transmit power of the PSCCH and the transmit power of the first positioning reference signal is equal to the transmit power of the second positioning reference signal, which enables each transmission opportunity or time domain unit (such as a symbol) to have the same power, thereby ensuring power control consistency between symbols.

[0028] In combination with the first aspect, in a possible implementation, the transmit power of the PSCCH is related to the transmit power of the second positioning reference signal and a first ratio, where the first ratio is the ratio of the number of frequency domain units contained in the first frequency domain resource to a first number, and the first number is the sum of the number of frequency domain units included in the first frequency domain resource and the second frequency domain resource.

[0029] In an embodiment of the present application, the transmit power of the first positioning reference signal is related to the transmit power of the second positioning reference signal and a third ratio, where the third ratio is the ratio of the number of frequency domain units included in the second frequency domain resources to the first number. It is understandable that by adjusting the transmit power of the PSCCH based on the ratio of the number of frequency domain units included in the first frequency domain resources to the first number, and adjusting the transmit power of the first positioning reference signal based on the ratio of the number of frequency domain units included in the second frequency domain resources to the first number, the first positioning reference signal and the PSCCH can maintain the same power spectral density, thereby reducing the difficulty of power control.

[0030] In combination with the first aspect, in a possible implementation method, the transmit power of the PSCCH is related to the transmit power of the second positioning reference signal, a second ratio and a comb value corresponding to the second positioning reference signal, and the second ratio is the ratio of the number of frequency domain units contained in the first frequency domain resource to the number of frequency domain units contained in the third frequency domain resource.

[0031] In an embodiment of the present application, the energy on each RE used to transmit the PSCCH is the same as the energy on each RE used to transmit the second positioning reference signal, that is, the second positioning reference signal and the PSCCH maintain the same EPRE. When resource sensing (Sensing) is performed between users, the RSRP measured based on the PSCCH can reflect the signal transmission status of the second positioning reference signal, thereby reducing unnecessary energy conversion.

[0032] In a second aspect, an embodiment of the present application provides a communication method, which is applied to a second communication device. It is understood that the method can be executed by the second communication device, or a chip (system) or circuit used for the second communication device, and this application does not limit this. The method includes:

[0033] A physical sidelink control channel PSCCH is received based on first time domain resources and first frequency domain resources; a first reference signal is received based on the first time domain resources and second frequency domain resources, wherein the first frequency domain resources and the second frequency domain resources are frequency domain resources in a resource set.

[0034] In an embodiment of the present application, the resource set may be a resource set used for positioning. For example, in a scenario based on unlicensed spectrum communication, the resource set includes resources occupied from the unlicensed spectrum resource pool after the first communication device or the second communication device successfully completes LBT. In an embodiment of the present application, the first positioning reference signal may be transmitted using frequency domain resources not occupied by PSCCH in the resource set to meet the OCB requirements of the unlicensed spectrum, so that the method based on sidelink positioning can be applied to the unlicensed spectrum. In addition, after receiving the first positioning reference signal, the second communication device may perform positioning estimation based on the first positioning reference signal, and the first positioning reference signal may provide auxiliary functions to achieve higher-precision positioning.

[0035] In combination with the second aspect, in a possible implementation, the sum of the bandwidths occupied by the first frequency domain resources and the second frequency domain resources is greater than or equal to a first threshold, and the first threshold is determined by the bandwidth of the resource set.

[0036] In combination with the second aspect, in a possible implementation manner, the sum of the bandwidths occupied by the first frequency domain resources and the second frequency domain resources is equal to the bandwidth of the resource set.

[0037] In combination with the second aspect, in a possible implementation, the first frequency domain resources include one or more frequency domain resource subsets, the second frequency domain resources include one or more frequency domain resource subsets, and the frequency domain resource subsets included in the first frequency domain resources and the second frequency domain resources are different.

[0038] In combination with the second aspect, in one possible implementation, the resource units used to transmit the first positioning reference signal are distributed in a comb-tooth structure on the first frequency domain subset and the first time domain resources, and the first frequency domain resource subset is any one of the one or more frequency domain resource subsets contained in the second frequency domain resources.

[0039] With reference to the second aspect, in a possible implementation manner, resource units used to transmit the first positioning reference signal are distributed in a comb-tooth structure on the second frequency domain resources and the first time domain resources.

[0040] In combination with the second aspect, in one possible implementation, the PSCCH carries control information of a second positioning reference signal, the second positioning reference signal is transmitted on a third frequency domain resource and a second time domain resource, the third frequency domain resource and the second time domain resource are included in the resource set, and the comb tooth value corresponding to the first positioning reference signal is the same as the comb tooth value corresponding to the second positioning reference signal.

[0041] In a third aspect, an embodiment of the present application provides a communication device for executing the method in the first aspect or any possible implementation of the first aspect. The communication device includes a unit having a function of executing the method in the first aspect or any possible implementation of the first aspect.

[0042] In a fourth aspect, an embodiment of the present application provides a communication device for executing the method in the second aspect or any possible implementation of the second aspect. The communication device includes a unit having the function of executing the method in the second aspect or any possible implementation of the second aspect.

[0043] In the third aspect and the fourth aspect, the above-mentioned communication device and communication device may include a transceiver unit and a processing unit. For a detailed description of the transceiver unit and the processing unit, reference may also be made to the device embodiment shown below.

[0044] In a fifth aspect, an embodiment of the present application provides a communication device, comprising a processor configured to execute the method described in any one of the first to fourth aspects or any possible implementation thereof. Alternatively, the processor is configured to execute a program stored in a memory, and when the program is executed, the method described in any one of the first to second aspects or any possible implementation thereof is executed.

[0045] In a possible implementation, the memory is located outside the communication device.

[0046] In a possible implementation, the memory is located within the above-mentioned communication device.

[0047] In an embodiment of the present application, the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together.

[0048] In a possible implementation, the communication device further includes a transceiver, where the transceiver is configured to receive a signal or send a signal.

[0049] In a sixth aspect, an embodiment of the present application provides a communication device, which includes a logic circuit and an interface, wherein the logic circuit and the interface are coupled; the logic circuit is used to output a PSCCH through the interface based on a first time domain resource and a first frequency domain resource, and to output a first positioning reference signal through the interface based on the first time domain resource and the second frequency domain resource.

[0050] It can be understood that with respect to the communication device shown in the sixth aspect, reference can also be made to the first aspect or the specific implementation shown below.

[0051] In the seventh aspect, an embodiment of the present application provides a communication device, which includes a logic circuit and an interface, and the logic circuit and the interface are coupled; the logic circuit is used to input PSCCH through the interface based on the first time domain resources and the first frequency domain resources, and to input the first positioning reference signal through the interface based on the first time domain resources and the second frequency domain resources.

[0052] It can be understood that with respect to the communication device shown in the seventh aspect, reference can also be made to the second aspect or the specific implementation shown below.

[0053] In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium for storing a computer program, which, when executed on a computer, enables the method shown in any one of the first to second aspects or any possible implementation to be executed.

[0054] In a ninth aspect, an embodiment of the present application provides a computer program product, which includes a computer program. When the computer program is run on a computer, the method shown in any aspect of the first to second aspects or any possible implementation is executed.

[0055] In a tenth aspect, an embodiment of the present application provides a computer program. When the computer program is run on a computer, the method shown in any aspect of the first to second aspects or any possible implementation is executed.

[0056] In the eleventh aspect, an embodiment of the present application provides a communication system, which includes a first communication device and a second communication device, the first communication device is used to execute the method shown in the above-mentioned first aspect or any possible implementation of the first aspect, and the second communication device is used to execute the method shown in the above-mentioned second aspect or any possible implementation of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The following is an introduction to the drawings related to the embodiments of this application.

[0058] FIG1A is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application;

[0059] FIG1B is an example of a communication scenario provided by an embodiment of the present application;

[0060] FIG1C is an example of another communication scenario provided by an embodiment of the present application;

[0061] FIG2A is a schematic diagram of a time-frequency resource provided in an embodiment of the present application;

[0062] FIG2B is a schematic diagram of another time-frequency resource provided in an embodiment of the present application;

[0063] FIG3 is a flow chart of a communication method provided in an embodiment of the present application;

[0064] FIG4 is a schematic diagram of an unlicensed spectrum resource pool provided in an embodiment of the present application;

[0065] FIG5 is a schematic diagram of a resource set provided in an embodiment of the present application;

[0066] FIG6A is a schematic diagram of the distribution of resource units provided in an embodiment of the present application;

[0067] FIG6B is a schematic diagram of the distribution of another resource unit provided in an embodiment of the present application;

[0068] FIG6C is a schematic diagram of an interleaved distribution provided in an embodiment of the present application;

[0069] FIG6D is a schematic diagram of distribution of another resource unit provided in an embodiment of the present application;

[0070] FIG7 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0071] FIG8 is a schematic structural diagram of another communication device provided in an embodiment of the present application;

[0072] FIG9 is a schematic structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0073] The terms "first" and "second" in the specification, claims and drawings of this application are only used to distinguish different objects, and are not used to limit the order, timing, priority or importance of multiple objects. In the embodiments of the present application, "multiple" refers to two or more. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices. In addition, the character " / ", unless otherwise specified, generally indicates that the objects associated before and after are in an "or" relationship.

[0074] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It will be understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0075] It should be understood that in the present application, "at least one (item)" refers to one or more, "more than one" refers to two or more, "at least two (items)" refers to two or three and more than three, and "and / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0076] The method provided in this application can be applied to various communication systems, for example, the Internet of Things (IoT) system, the narrowband Internet of Things (NB-IoT) system, the long term evolution (LTE) system, the fifth generation (5G) communication system, and new communication systems (such as 6G) that will emerge in future communication developments.

[0077] The technical solution provided in this application can also be applied to machine type communication (MTC), long term evolution-machine (LTE-M), device-to-device (D2D) network, machine-to-machine (M2M) network, Internet of Things (IoT) network or other networks. Among them, the IoT network may include, for example, the Internet of Vehicles. Among them, the communication methods in the Internet of Vehicles system are collectively referred to as vehicle-to-everything (V2X, X can represent anything). For example, the V2X may include: vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication or vehicle-to-network (V2N) communication, etc. For example, in FIG. 1A , FIG. 1B , or FIG. 1C shown below, terminal devices can communicate with each other through D2D technology, M2M technology, or V2X technology.

[0078] The network device in the embodiments of the present application may be a next generation node B (gNB), a next generation evolved node B (ng-eNB), or a network device in future 6G communications. The network device may be any device with wireless transceiver functions, such as a base station. Base stations may have various forms, such as macro base stations, micro base stations, relay stations, and access points. The base station may also be a base station in a future communication system such as a sixth generation communication system. Optionally, the network device may be an access node, a wireless relay node, a wireless backhaul node, etc. in a wireless local area network (wireless fidelity, WiFi) system. Optionally, the network device may be a wireless controller in a cloud radio access network (CRAN) scenario. Optionally, the network device may be a wearable device or an in-vehicle device, etc. Optionally, the network device may also be a small cell, a transmission reception point (TRP) (or also referred to as a transmission point), a transmission measurement function (TMF), etc. It is understandable that the network device may also be a base station in a future evolved public land mobile network (PLMN), etc.

[0079] In some deployments, a base station (such as a gNB) can be composed of a centralized unit (CU) and a distributed unit (DU). That is, the functions of the base station in the access network are split, with some functions of the base station deployed in a CU and the remaining functions deployed in the DU. Multiple DUs share a single CU, which can save costs and facilitate network expansion. In other deployments of base stations, the CU can also be divided into a CU-control plane (CP) and a CU-user plane (UP). In still other deployments of base stations, the base station can also be an open radio access network (ORAN) architecture, etc. This application does not limit the specific type of base station.

[0080] The terminal device in the embodiments of the present application may also be referred to as user equipment (UE), terminal, etc. A terminal device is a device with wireless transceiver capabilities that can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; can also be deployed on water, such as on a ship; can also be deployed in the air, such as on an airplane, balloon, or satellite. The terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, customer-premises equipment (CPE), etc. It is understandable that the terminal device can also be a terminal device in a future 6G network or a terminal device in a future evolved PLMN, etc.

[0081] It can be understood that the terminal device shown in this application can not only include vehicles in the Internet of Vehicles (such as complete vehicles), but also include vehicle-mounted devices or vehicle-mounted terminals in the Internet of Vehicles. This application does not limit the specific form of the terminal device when applied to the Internet of Vehicles.

[0082] In a wireless communication system, data communication can be carried out between terminal devices through network devices, or communication can be carried out directly between terminal devices without the help of network devices. Communication between terminal devices that directly transmits data without the help of network devices can be called sidelink (SL) communication. For example, Figure 1A is an architectural diagram of a communication system provided in an embodiment of the present application. In sidelink communication, the communication system may include at least two terminal devices. Figure 1A exemplarily shows two terminal devices, namely UE1 and UE2. The interface between UE1 and UE2 is called a PC5 interface, and the communication link between UE1 and UE2 is called a sidelink. Data can be transmitted directly between UE1 and UE2 through a sidelink without going through the network, which can effectively reduce communication delay. For example, one application scenario of the sidelink communication system may be vehicle-to-everything (V2X). In V2X, each vehicle is a terminal device, and data can be transmitted directly between vehicles through a sidelink.

[0083] In the above-mentioned communication system, spectrum resources can be divided into licensed spectrum and unlicensed spectrum. In unlicensed spectrum, terminal devices need to select physical resources from the resource pool for data transmission. For example, terminal devices can preempt channels through listen before talk (LBT) or share resources obtained after other terminal devices preempt channels to transmit data. In unlicensed spectrum transmission, the transmission bandwidth requirement (OCB) must be met. For example, a single data transmission must occupy at least 80% of the total bandwidth.

[0084] In the above-mentioned communication system, UEs can measure each other via sidelinks to achieve mutual positioning between them, also known as sidelink positioning. For example, scenarios based on sidelink positioning may include in-network coverage, out-of-network coverage, and partial network coverage. The in-network coverage scenario refers to when both UEs connected via the PC5 interface are within the network coverage of the access network. As shown in Figure 1B , UE1 and UE2 are connected via the PC5 interface. Both UE1 and UE2 are within the coverage of the network device (gNB), and UE1 and UE2 can connect to the gNB via the Uu interface. The out-of-network coverage scenario refers to when both UEs connected via the PC5 interface are outside the network coverage of the access network. As shown in Figure 1A , both UE1 and UE2 are outside the network coverage of the access network. The partial network coverage scenario refers to when one of the two UEs connected via the PC5 interface is outside the network coverage of the access network, while the other is within the network coverage of the access network. As shown in Figure 1C , UE1 is outside the coverage of the gNB, while UE2 is within the coverage of the gNB. UE1 and UE2 are connected via the PC5 interface, and UE2 is connected to the gNB via the Uu interface.

[0085] In a sidelink positioning-based communication system, positioning can be performed based on a positioning reference signal (PRS), which is also called an SL-PRS. For example, UE1 sends a PRS to UE2, and UE2 can determine its location information based on the PRS.

[0086] In one possible implementation, in order to provide a larger bandwidth, UE1 may send the PRS based on a dedicated resource pool, and the resources in the dedicated resource pool are used to transmit the PRS. Exemplarily, the bandwidth occupied by the PRS is consistent with the bandwidth of the resource pool, and a comb structure is adopted. The resource element (RE) used to transmit the PRS can be determined by the RE offset (RE-offset) corresponding to the UE1, and the RE offset is used to indicate the number of REs spaced between the starting RE for transmitting the PRS and the starting RE in the resource pool on one symbol, or the RE offset is used to indicate the number of REs spaced between the starting RE for transmitting the PRS and the reference RE in the resource pool on one symbol. The above-mentioned one symbol can be understood as the first symbol of the resources occupied by the PRS, or any symbol of the occupied resources.

[0087] Exemplarily, before sending PRS, UE1 also sends a physical sidelink control channel (PSCCH), which carries control information of the PRS. For example, the control information may include the index of the resource used to transmit the PRS, the comb value corresponding to the PRS, etc. There is a one-to-one relationship between PSCCH and PRS. In order to support multi-user multiplexing, different UEs can send PSCCH on the same time domain resources, and the frequency domain resources corresponding to the PSCCH sent by different UEs are different. Different UEs can send PRS on the same time-frequency resources, and the corresponding RE offsets of different UEs are different. As shown in Figure 2A, UE1 and UE2 both send PSCCH on time domain resource 1 and PRS on time domain resource 2. Among them, UE1 sends PSCCH on frequency domain resource 1, and UE2 sends PSCCH on frequency domain resource 2. UE1 sends PRS in a comb structure (as shown in the diagonal filled box in Figure 2A), the comb value corresponding to UE1 is 4, and the corresponding RE offset is 2. UE2 sends PRS in a comb-tooth structure (as shown in the gray filled box in FIG2A ), the comb-tooth value corresponding to UE2 is 4, and the corresponding RE offset is 0. Optionally, an automatic gain control (AGC) symbol may be included before time domain resource 1.

[0088] Exemplarily, as shown in FIG2B , an AGC symbol may be further included between time domain resource 1 and time domain resource 2 to indicate the transmit power of the PRS.

[0089] Exemplarily, the transmission power of the PRS transmitted by the terminal device at the transmission occasion i of the SL part bandwidth (Bandwidth Part, BWP) b of the carrier (carrier) f satisfies: P PRS (i) = min(P CMAX ,P MAX,CBR ,min(P PRS,D (i),P PRS,SL (i))) (1)

[0090] Among them, P PRS (i) represents the transmit power of PRS at transmit opportunity i, in dBm. CMAX Indicates the maximum transmit power of the terminal device, which is related to the network congestion rate (Channel busy ratio, CBR) and transmission priority, and can be indicated by high-level parameters. MAX,CBR When not configured, P MAX,CBR =P CMAX .

[0091] The above P PRS,D(i) Satisfy:

[0092] in, The target received power indicates the P0 value of power control indicated by the higher-level parameters. Indicates the number of physical resource blocks (PRBs) occupied by PRS. Parameter α D Indicated by high-level parameters, if the parameter α D Unconfigured value, parameter α D The default value is 1.

[0093] The above P PRS,SL (i) Satisfy:

[0094] in, Indicates the P0 value of power control indicated by the high-level parameters. Indicates the number of PRBs occupied by PRS. SL Indicates the path loss coefficient, which is indicated by a high-level parameter. SL Indicates the path loss of the side link. SL The PL is obtained by subtracting the transmit power of the PRS from the L3-reference signal receiving power (RSRP) fed back by the receiving end. SL is the difference between the transmit power of the PRS and the receive power of the PRS.

[0095] For example, the transmission power of the PSCCH may be the same as that of the PRS, that is, P PSCCH (i) = P PRS (i).

[0096] However, the above sidelink positioning method does not meet the OCB requirements for unlicensed spectrum and cannot be applied to unlicensed spectrum. As shown in Figure 2A, when UE1 transmits the PSCCH, the bandwidth occupied is the bandwidth of frequency domain resource 1, which is less than 80% of the full bandwidth of the resource pool. Therefore, it does not meet the OCB requirements for unlicensed spectrum.

[0097] In view of this, embodiments of the present application provide a communication method, a communication device, and a communication system that can meet the OCB requirements of unlicensed spectrum, enabling the sidelink positioning method to be applied to the unlicensed spectrum. The method provided in embodiments of the present application can be applied to the communication system shown in Figure 1A, Figure 1B, or Figure 1C. Alternatively, the method can be applied to a first communication device and a second communication device, where the first communication device and the second communication device can be the terminal devices described above.

[0098] Please refer to Figure 3, which is a flow chart of a communication method provided in an embodiment of the present application. As shown in Figure 3, the method includes but is not limited to the following steps.

[0099] 301. A first communication device sends a PSCCH based on first time domain resources and first frequency domain resources. Correspondingly, a second communication device receives a PSCCH based on the first time domain resources and first frequency domain resources.

[0100] 302. The first communication device sends a first positioning reference signal based on first time domain resources and second frequency domain resources. Correspondingly, the second communication device receives the first positioning reference signal based on the first time domain resources and second frequency domain resources.

[0101] The first frequency domain resource and the second frequency domain resource are frequency domain resources in a resource set. The resource set may be a resource set used for positioning.

[0102] Exemplarily, in a scenario based on unlicensed spectrum communication, the resource set includes the resources occupied by the first communication device or the second communication device after the LBT is successful. For example, the resource pool of the unlicensed spectrum includes multiple resource block (RB) sets (RB sets), and the first communication device or the second communication device can perform LBT operations on multiple RB sets on the unlicensed spectrum through LBT. The first communication device or the second communication device can transmit data on the RB set where the LBT is successful, and the above-mentioned resource set includes the RB set where the LBT is successful. As shown in Figure 4, the resource pool of the unlicensed spectrum may include 5 RB sets, namely RB set#0-RB set#4. Among them, RB set#1 fails in LBT, and RB set#0, RB set#2, RB set#3, and RB set#4 succeed in LBT. The above-mentioned resource sets may include RB set#0, RB set#2, RB set#3, and RB set#4.

[0103] For example, in a resource pool of unlicensed spectrum, a guard band exists between two consecutive RB sets. If the resource set includes two consecutive RB sets, the resource set may include the guard band between the two consecutive RB sets. That is, when LBT between two consecutive RB sets succeeds, the guard band between the two RB sets can also be used for data transmission.

[0104] For example, the bandwidth occupied by an RB set in the unlicensed spectrum may be 20 MHz, or approximately 20 MHz. The bandwidth of the RB set and the guard band may also be related to the subcarrier spacing. For example, if the subcarrier spacing is 15 kHz, an RB set occupies 105 PRBs, and the guard band occupies 6 PRBs. It is understood that the bandwidth of the RB set and the guard band may also be defined by the protocol.

[0105] In one possible implementation, the sum of the bandwidths occupied by the first frequency domain resource and the second frequency domain resource is greater than or equal to a first threshold, and the first threshold is determined by the bandwidth of the resource set. Exemplarily, the first threshold can be determined by the bandwidth of the resource set and the OCB requirement of the unlicensed spectrum. For example, the first threshold can be x% of the bandwidth of the resource set, where x can be a number determined based on the OCB requirement of the unlicensed spectrum. For example, if the OCB requirement of the unlicensed spectrum is that a single data transmission must occupy at least 80% of the total bandwidth, then the first threshold is 80% of the bandwidth of the resource set, that is, x is 80.

[0106] Exemplarily, the sum of the bandwidths occupied by the first frequency domain resources and the second frequency domain resources is equal to the bandwidth of the resource set. That is, the first positioning reference signal and PSCCH can occupy the entire resource set, and can make full use of the resources. As shown in Figure 5, taking a time slot in the resource set as an example, the first symbol of the time slot is an AGC symbol, which is used to adjust the transmit power of the PSCCH and the first positioning reference signal. The above-mentioned first time domain resource may start from the second symbol of the time slot, for example, the first time domain resource may occupy 2-3 symbols. The first frequency domain resource may occupy X PRBs or Y subchannels, where X and Y are both integers greater than 0. The second frequency domain resource may include other frequency domain resources in the resource set except the first frequency domain resource, that is, the second frequency domain resource includes PRBs or subchannels in the resource set that are not included in the first frequency domain resource.

[0107] Exemplarily, the PSCCH carries control information of a second positioning reference signal, and the second positioning reference signal is transmitted on a third frequency domain resource and a second time domain resource, and the third frequency domain resource and the second time domain resource are included in a resource set. The second time domain resource is different from the first time domain resource. The first communication device also sends a second positioning reference signal based on the second time domain resource and the third frequency domain resource. Exemplarily, the third frequency domain resource includes the first frequency domain resource and the second frequency domain resource, that is, the third frequency domain resource can be a collection of the first frequency domain resource and the second frequency domain resource. The distribution of REs used to transmit the second positioning reference signal on the third frequency domain resource and the second time domain resource is a comb structure. The second time domain resource can be located after the first time domain resource.

[0108] Exemplarily, the first communications device further transmits a second positioning reference signal based on the second time domain resource and the third frequency domain resource. As shown in FIG5 , taking a time slot in the resource set as an example, the second time domain resource may include other symbols in the time slot. Optionally, an AGC symbol may be included between the first time domain resource and the second time domain resource, and the last symbol of the time slot may be a GAP symbol.

[0109] In this embodiment of the present application, frequency domain resources not occupied by the PSCCH in a resource set can be used to transmit a first positioning reference signal to meet the OCB requirements of unlicensed spectrum, enabling the sidelink positioning method to be applied to unlicensed spectrum. Furthermore, after receiving the first positioning reference signal, the second communication device can perform positioning estimation based on the first positioning reference signal. The first positioning reference signal can provide assistance to achieve higher-precision positioning.

[0110] In a possible implementation, the transmit power of the PSCCH or the first positioning reference signal is related to the transmit power of the second positioning reference signal.

[0111] The transmit power of the PSCCH, the first positioning reference signal, or the second positioning reference signal can be understood as the transmit power of the PSCCH, the first positioning reference signal, or the second positioning reference signal at a transmission opportunity or a time domain unit (such as a symbol). The transmit power of the PSCCH and the transmit power of the first positioning reference signal can be determined by the transmit power of the second positioning reference signal. For example, the sum of the transmit power of the PSCCH and the transmit power of the first positioning reference signal is equal to the transmit power of the second positioning reference signal.

[0112] Exemplarily, the transmit power of the second positioning reference signal may be determined by one or more of the following: the maximum transmit power of the first communication device, the network congestion rate of the first communication device, the transmission priority of the first communication device, the number of frequency domain units included in the third frequency domain resource, the target receive power, the path loss coefficient, and higher-layer parameters. For example, the transmit power of the second positioning reference signal may be as shown in formula (1).

[0113] Exemplarily, the larger the comb value corresponding to the second positioning reference signal is, the greater the energy per resource unit of the second positioning reference signal is.

[0114] Exemplarily, the transmit power of the PSCCH is related to the transmit power of the second positioning reference signal and the number of frequency domain elements included in the first frequency domain resources. For example, the greater the number of frequency domain elements included in the first frequency domain resources, the greater the transmit power of the PSCCH, thereby ensuring the energy per resource element (EPRE) of the PSCCH and ensuring reliable transmission of the PSCCH.

[0115] Exemplarily, the transmit power of the first positioning reference signal is related to the transmit power of the second positioning reference signal and the number of frequency domain units included in the second frequency domain resource. For example, the greater the number of frequency domain units included in the second frequency domain resource, the greater the transmit power of the first positioning reference signal.

[0116] In this implementation, the transmit power of the PSCCH and the first positioning reference signal can be adjusted based on the transmit power of the second positioning reference signal, thereby ensuring inter-symbol power control consistency and ensuring reliable transmission of the PSCCH and the first positioning reference signal.

[0117] Regarding the first frequency domain resource and the second frequency domain resource, this embodiment of the application also provides the following implementation methods:

[0118] Implementation method 1: The first frequency domain resources include one or more frequency domain resource subsets, and the second frequency domain resources include one or more frequency domain resource subsets. The frequency domain resource subsets included in the first frequency domain resources and the second frequency domain resources are different.

[0119] Exemplarily, the bandwidth of the frequency domain resource subset can be the basic bandwidth in the resource set, and the frequency domain resources in the resource set can be allocated with the frequency domain resource subset as the granularity. A frequency domain resource subset can be a set of RBs in an unlicensed spectrum, or a frequency domain resource subset can include at least one set of RBs. For example, the first frequency domain resource includes one or more sets of RBs in an unlicensed spectrum, and the second frequency domain resource includes one or more sets of RBs in an unlicensed spectrum. The first frequency domain resource and the second frequency domain resource include different frequency domain resource subsets, which can be understood as the frequency domain resource subsets included in the first frequency domain resource are not included in the second frequency domain resource.

[0120] It is understood that when there are two consecutive RB sets in one or more RB sets included in the first frequency domain resource, the first frequency domain resource includes a guard band between the two RB sets. When there are two consecutive RB sets in one or more RB sets included in the second frequency domain resource, the second frequency domain resource includes a guard band between the two RB sets.

[0121] In this implementation, frequency domain resource allocation can be performed with frequency domain resource subsets as the granularity, making the frequency domain resource allocation more reasonable.

[0122] As an example, the resource units used to transmit the first positioning reference signal are distributed in a comb-tooth structure on the first frequency domain subset and the first time domain resources, and the first frequency domain resource subset is any one of the one or more frequency domain resource subsets contained in the second frequency domain resources.

[0123] Exemplarily, a resource unit (i.e., RE) can be represented by a subcarrier and a time domain unit (such as a symbol). On a time domain unit, the distribution of resource units used to transmit a first positioning reference signal can be represented by the distribution of subcarriers used to transmit the first positioning reference signal. On a time domain unit and a first frequency domain resource subset, the interval between any two adjacent resource units in a plurality of resource units used to transmit a first positioning reference signal is related to the comb value corresponding to the first positioning reference signal. For example, the comb value corresponding to the first positioning reference signal is N, and there are N-1 resource units between any two adjacent resource units in the plurality of resource units. Wherein, N is any positive integer, for example, N can be 1, 2, 4, 6, 12, etc.

[0124] When the comb value corresponding to the first positioning reference signal is 1, the multiple resource elements are continuous in a time domain unit and the first frequency domain resource subset, which can be understood as the first positioning reference signal not using a comb structure. As shown in Figure 6A, all resource elements in a time domain unit and the first frequency domain resource subset transmit the first positioning reference signal.

[0125] When the comb value N corresponding to the first positioning reference signal is not 1, the multiple resource units are discretely distributed in a time domain unit and the first frequency domain resource subset, and any two adjacent resource units are separated by N-1 resource units. As shown in Figure 6B, taking N=4 as an example, any two adjacent resource units in the multiple resource units (as shown in the gray filled boxes in Figure 6B) are separated by 3 resource units.

[0126] It is understandable that the resource elements used to transmit the first positioning reference signal in other frequency domain resource subsets included in the second frequency domain resources may also be distributed in a comb-tooth structure. Taking the first frequency domain resource subset as an example, for descriptions of other frequency domain resource subsets, reference can be made to the description of the first frequency domain resource subset described above, and will not be described in detail here. The comb-tooth values ​​corresponding to the first positioning reference signal in one or more frequency domain resource subsets included in the second frequency domain resources may be different or the same, and this application does not impose any restrictions.

[0127] It can be understood that the above introduces the distribution of resource units used to transmit the first positioning reference signal in a time domain unit and a first frequency domain resource subset. When the first time domain resource includes multiple time domain units, the distribution of resource units used to transmit the first positioning reference signal in other time domain units can also refer to the description of the time domain unit and will not be described in detail here.

[0128] Exemplarily, in the case where the above-mentioned first time domain resource includes multiple time domain units, the distribution of multiple REs used to transmit the first positioning reference signal is related to the comb value and RE offset corresponding to the first reference signal. On each time domain unit, the position of the RE used to transmit the first positioning reference signal in the first frequency domain resource subset is related to the RE offset corresponding to the time domain unit. The RE offset corresponding to the time domain unit is used to indicate the number of resource units between the starting resource unit used to transmit the first positioning reference signal and the starting resource unit of the first frequency domain resource subset on the time domain unit, or the RE offset corresponding to the time domain unit is used to indicate the number of REs spaced between the starting RE used to transmit the first positioning reference signal and the reference RE in the first frequency domain resource subset on the time domain unit. As shown in Figure 6B, there are 3 resource units between the starting resource unit used to transmit the first positioning reference signal and the starting resource unit of the first frequency domain resource subset. Therefore, in Figure 6B, the RE offset corresponding to the time domain unit is 3.

[0129] It is understandable that the RE offset corresponding to each time domain unit in the embodiment of the present application may be the same or different, and the present application does not impose any limitation on this.

[0130] In this example, the second frequency domain resources include one or more frequency domain resource subsets, and the resource units used to transmit the first positioning reference signal can be configured with the frequency domain resource subset as the granularity, so that the distribution of the resource units used to transmit the first positioning reference signal is more reasonable.

[0131] As another example, the resource units used to transmit the first positioning reference signal are distributed in a comb-tooth structure on the second frequency domain resources and the first time domain resources.

[0132] It can be understood that the distribution of resource units used to transmit the first positioning reference signal on the second frequency domain resources and the first time domain resources can be referred to the above distribution of resource units used to transmit the first positioning reference signal on the first frequency domain resource subset and the first time domain resources, which will not be described in detail here.

[0133] In this example, the second frequency domain resource can be regarded as a whole, and the resource unit used to transmit the first positioning reference signal can be configured based on the second frequency domain resource, so that the configuration of the resource unit is simpler.

[0134] Exemplarily, the comb value corresponding to the first positioning reference signal may be the same as the comb value corresponding to the second positioning reference signal, or the comb value corresponding to the first positioning reference signal may be different from the comb value corresponding to the second positioning reference signal.

[0135] As another example, the frequency domain units used to transmit the first positioning reference signal are distributed on the second frequency domain resources in an interlaced manner. The second frequency domain resources may include one or more interlaces used to transmit the first positioning reference signal.

[0136] Exemplarily, the interleaving may also be referred to as interleaving, and one interleaving may include multiple PRBs, and the multiple PRBs are discretely and equally spaced on the second frequency domain resource. The number of PRBs included in different interleavings in the second frequency domain resource differs by either 0 or 1. For example, when the bandwidth of the second frequency domain resource is 20 MHz, one interleaving may include 10 or 11 PRBs. When the subcarrier spacing is 15 kHz, the second frequency domain resource may include 10 interleavings, with 9 PRBs spaced between two adjacent PRBs within an interleaving. When the subcarrier spacing is 30 khz, the second frequency domain resource may include 5 interleavings, with 10 PRBs spaced between two adjacent PRBs within an interleaving.

[0137] As shown in FIG6C , FIG6C takes the second frequency domain resource having a bandwidth of 20 MHz and a subcarrier spacing of 30 kHz as an example. The number of PRBs included in the second frequency domain resource is 52, the number of interlaces is 5, and the number of PRBs included in each interlace is 11 or 10. The indices of the multiple PRBs included in an interlace with an interlace index of 1 are 0, 5, ..., 45, and 50, respectively. When the index of the interlace used to transmit the first positioning reference signal is 1, the indices of the frequency domain units used to transmit the first positioning reference signal in the second frequency domain resource are 0, 5, ..., 45, and 50, respectively.

[0138] It is understood that the second frequency domain resources and the interleaving distribution shown in FIG6C are merely examples and should not be construed as limiting the present application. Second frequency domain resources corresponding to different bandwidths may contain different numbers of PRBs, and the interleaving in the second frequency domain resources may be extended in a sampling equidistant manner.

[0139] It is understood that the indexes of the PRBs and interleavings in FIG6C are merely examples and should not be construed as limiting the present application. In some possible implementations, the index of the interleaving is carrier-dependent, so the first PRB in the second frequency domain resource is not necessarily included in the first interleaving of the second frequency domain resource, i.e., the interleavings in the second frequency domain resource are not necessarily numbered starting from 0. For example, in FIG6C , the PRB with index 0 in the second frequency domain resource is included in the interleaving with index 1, i.e., the interleavings in the second frequency domain resource are numbered starting from 1.

[0140] Illustratively, one interlace may be mapped to data of one subchannel, one subchannel may correspond to one interlace, or one subchannel may correspond to two consecutive interlaces.

[0141] In some possible implementations, the frequency domain units used to transmit the first positioning reference signal are distributed in an interleaved manner on a first frequency domain resource subset, and the first frequency domain resource subset includes one or more interlaces used to transmit the first positioning reference signal.

[0142] In this example, the first positioning reference signal may be transmitted in an interleaved manner, so that the bandwidth occupied by the first positioning reference signal can meet the OCB requirement of the unlicensed spectrum.

[0143] Implementation method two: The resource set includes multiple frequency domain resource subsets, the first frequency domain resource is included in the second frequency domain resource subset, the second frequency domain resource includes other frequency domain subsets in the resource set except the second frequency domain resource subset, and the second frequency domain subset is any one of the multiple frequency domain resource subsets.

[0144] Exemplarily, the second frequency domain resources may also include frequency domain resources other than the first frequency domain resources in the second frequency domain resource subset.

[0145] In this implementation, when the bandwidth occupied by PSCCH is small, such as when the bandwidth occupied by PSCCH is smaller than the bandwidth of the second frequency domain resource subset, the above-mentioned first positioning reference signal can occupy other frequency domain resource subsets in the resource set and the frequency domain resources in the second frequency domain resource subset that are not occupied by PSCCH to avoid waste of resources.

[0146] Regarding the transmission power of the PSCCH and the first positioning reference signal, the embodiments of the present application further provide the following examples.

[0147] Example 1: The transmit power of the PSCCH is related to the transmit power of the second positioning reference signal and a first ratio, where the first ratio is the ratio of the number of frequency domain units included in the first frequency domain resource to a first number, where the first number is the sum of the number of frequency domain units included in the first frequency domain resource and the second frequency domain resource. The transmit power of the first positioning reference signal is related to the transmit power of the second positioning reference signal and a third ratio, where the third ratio is the ratio of the number of frequency domain units included in the second frequency domain resource to the first number. Alternatively, the transmit power of the first positioning reference signal is determined by the transmit power of the PSCCH and the transmit power of the second positioning reference signal. For example, the transmit power of the first positioning reference signal is equal to the difference between the transmit power of the second positioning reference signal and the transmit power of the PSCCH.

[0148] For example, the transmit power of the PSCCH can be expressed as:

[0149] Among them, P PSCCH Indicates the transmit power of PSCCH, P PSCCHThe unit is dBm. M1 represents the number of frequency domain units included in the first frequency domain resource, S represents the first number, and P PRS2 represents the transmission power of the second positioning reference signal, P PRS2 The unit is dBm.

[0150] The transmit power of the first positioning reference signal can be expressed as:

[0151] Among them, P PRS1 represents the transmit power of the first positioning reference signal, in dBm. M2 represents the number of frequency domain units included in the second frequency domain resource, S represents the first number, and P PRS2 represents the transmit power of the second positioning reference signal, P PRS2 The unit is dBm.

[0152] In one possible implementation, the transmit power of the PSCCH may be determined by the transmit power of the first positioning reference signal, the ratio of the number of frequency domain units included in the first frequency domain resource to the number of frequency domain units included in the second frequency domain resource. For example, the transmit power of the PSCCH may be expressed as:

[0153] Among them, P PSCCH Indicates the transmit power of PSCCH, P PSCCH The unit is dBm. M1 represents the number of frequency domain units included in the first frequency domain resource, M2 represents the number of frequency domain units included in the second frequency domain resource, and P PRS1 Indicates the transmit power of the first positioning reference signal, in dBm.

[0154] In one possible implementation, the transmit power of the first positioning reference signal may be determined by the transmit power of the PSCCH, the ratio of the number of frequency domain units included in the second frequency domain resource to the number of frequency domain units included in the first frequency domain resource. For example, the transmit power of the first positioning reference signal may be expressed as:

[0155] Among them, P PSCCH Indicates the transmit power of PSCCH, P PSCCH The unit is dBm. M1 represents the number of frequency domain units included in the first frequency domain resource, M2 represents the number of frequency domain units included in the second frequency domain resource, and P PRS1 Indicates the transmit power of the first positioning reference signal, in dBm.

[0156] It can be understood that when the third frequency domain resource is a collection of the first frequency domain resource and the second frequency domain resource, the above-mentioned first quantity can also be understood as the number of frequency domain units contained in the third frequency domain resource, and the above-mentioned first ratio can also be understood as the ratio of the number of frequency domain units contained in the first frequency domain resource to the number of frequency domain resources contained in the third frequency domain resource.

[0157] In this example, the distribution of REs used to transmit the second positioning reference signal is a comb-tooth structure, and the EPRE of the second positioning reference signal may be greater than the EPRE of the first positioning reference signal and the PSCCH.

[0158] In this example, the transmit power of the PSCCH is adjusted based on the ratio of the number of frequency domain units included in the first frequency domain resources to the first number, and the transmit power of the first positioning reference signal is adjusted based on the ratio of the number of frequency domain units included in the second frequency domain resources to the first number. This allows the first positioning reference signal and the PSCCH to maintain the same power spectral density, reducing the difficulty of power control.

[0159] Example 2: The transmit power of the PSCCH can be determined by the sum of the number of frequency domain resource subsets included in the first frequency domain resources and the second frequency domain resources, the number of frequency domain resource subsets included in the first frequency domain resources, and the transmit power of the second positioning reference signal. The transmit power of the first positioning reference signal can be determined by the sum of the number of frequency domain resource subsets included in the first frequency domain resources and the second frequency domain resources, the number of frequency domain resource subsets included in the second frequency domain resources, and the transmit power of the second positioning reference signal.

[0160] For example, the transmit power of the PSCCH can be expressed as:

[0161] Among them, P PSCCH Indicates the transmit power of PSCCH, P PSCCH The unit is dBm. M′1 represents the number of frequency domain resource subsets included in the first frequency domain resource, S′ represents the sum of the number of frequency domain resource subsets included in the first frequency domain resource and the second frequency domain resource, and P PRS2 represents the transmit power of the second positioning reference signal, P PRS2 The unit is dBm.

[0162] The transmit power of the first positioning reference signal can be expressed as:

[0163] Among them, P PRS1 represents the transmit power of the first positioning reference signal, in dBm. M′2 represents the number of frequency domain resource subsets included in the second frequency domain resource, S′ represents the sum of the number of frequency domain resource subsets included in the first frequency domain resource and the second frequency domain resource, P PRS2represents the transmit power of the second positioning reference signal, P PRS2 The unit is dBm.

[0164] It can be understood that when the third frequency domain resources are a combination of the first frequency domain resources and the second frequency domain resources, the above S′ can represent the number of frequency domain resource subsets included in the third frequency domain resources.

[0165] In one possible implementation, the transmit power of the PSCCH may be determined by the transmit power of the first positioning reference signal, the ratio of the number of frequency domain resource subsets included in the first frequency domain resources, and the number of frequency domain resource subsets included in the second frequency domain resources. For example, the transmit power of the PSCCH may be expressed as:

[0166] Among them, P PSCCH Indicates the transmit power of PSCCH, P PSCCH The unit is dBm. M′1 represents the number of frequency domain resource subsets included in the first frequency domain resource, M′2 represents the number of frequency domain resource subsets included in the second frequency domain resource, and P PRS1 Indicates the transmit power of the first positioning reference signal, in dBm.

[0167] In one possible implementation, the transmit power of the first positioning reference signal may be determined by the transmit power of the PSCCH, the ratio of the number of frequency domain units included in the second frequency domain resource to the number of frequency domain units included in the first frequency domain resource. For example, the transmit power of the first positioning reference signal may be expressed as:

[0168] Among them, P PSCCH Indicates the transmit power of PSCCH, P PSCCH The unit is dBm. M′1 represents the number of frequency domain resource subsets included in the first frequency domain resource, M′2 represents the number of frequency domain resource subsets included in the second frequency domain resource, and P PRS1 Indicates the transmit power of the first positioning reference signal, in dBm.

[0169] In this example, the distribution of REs used to transmit the second positioning reference signal is a comb-tooth structure, and the EPRE of the second positioning reference signal may be greater than the EPRE of the first positioning reference signal and the PSCCH.

[0170] In this example, the transmit power of the PSCCH is adjusted based on the number of frequency domain resource subsets included in the first frequency domain resources, and the transmit power of the first positioning reference signal is adjusted based on the number of frequency domain resource subsets included in the second frequency domain resources. This allows the first positioning reference signal and the PSCCH to maintain the same power spectrum density, reducing the difficulty of power control.

[0171] Example 3: The transmit power of PSCCH is related to the transmit power of the second positioning reference signal, the second ratio and the comb value corresponding to the second positioning reference signal. The second ratio is the ratio of the number of frequency domain units included in the first frequency domain resource to the number of frequency domain units included in the third frequency domain resource.

[0172] Exemplarily, the resource units used to transmit the PSCCH are not distributed in a comb-tooth structure on the first frequency domain resources and the first time domain resources, or the comb-tooth value corresponding to the PSCCH is 1. The resource units used to transmit the second positioning reference signal are distributed in a comb-tooth structure on the third frequency domain resources and the second time domain resources. In addition, the first reference signal can also be interleaved on the second frequency domain resources. The transmit power of the PSCCH is determined by the transmit power of the second positioning reference signal, the second ratio, and the comb-tooth value of the second positioning reference signal. For example, the transmit power of the PSCCH satisfies the following formula:

[0173] Among them, P PSCCH Indicates the transmit power of PSCCH in dBm. comb2 indicates the comb value corresponding to the second positioning reference signal, M1 indicates the number of frequency domain units included in the first frequency domain resource, M3 indicates the number of frequency domain units included in the third frequency domain resource, P PRS2 represents the transmit power of the second positioning reference signal, P PRS2 The unit is dBm.

[0174] Exemplarily, the transmit power of the first positioning reference signal may be determined by the transmit power of the second positioning reference signal and the transmit power of the PSCCH. For example, the transmit power of the first positioning reference signal is obtained by subtracting the transmit power of the second positioning reference signal from the transmit power of the PSCCH.

[0175] For example, the transmission power of the first positioning reference signal can be expressed as: P PRS1 =P PRS2 -P PSCCH Among them, P PRS1 represents the transmit power of the first positioning reference signal, P PRS2 represents the transmit power of the second positioning reference signal, P PSCCH Indicates the transmit power of PSCCH, P PRS1 、P PRS2 and P PSCCH The units are milliwatt (mW) or watt (W).

[0176] For another example, the transmission power of the first positioning reference signal can be expressed as: P PRS1 =10log 10 (P PRS2 -PPSCCH ). Among them, P PRS1 represents the transmit power of the first positioning reference signal, P PRS2 represents the transmit power of the second positioning reference signal, P PSCCH Indicates the transmit power of PSCCH, P PRS1 The unit is dBm, P PRS2 and P PSCCH The unit is mW or W.

[0177] For another example, the transmit power of the first positioning reference signal can be expressed as: Among them, P PRS1 represents the transmit power of the first positioning reference signal, P PRS2 represents the transmit power of the second positioning reference signal, P PSCCH Indicates the transmit power of PSCCH, P PRS1 、P PRS2 and P PSCCH The unit is dBm.

[0178] In this example, the transmit power of the PSCCH can be adjusted based on the number of frequency domain units included in the first frequency domain resource and the number of frequency domain units included in the third frequency domain resource. The energy on each RE used to transmit the PSCCH is the same as the energy on each RE used to transmit the second positioning reference signal, that is, the second positioning reference signal and the PSCCH maintain the same EPRE. As shown in Figure 6B, the energy on the RE corresponding to the PSCCH is the same as the energy on RE1. When resource sensing is performed between users, the RSRP measured based on the PSCCH can reflect the signal transmission status of the second positioning reference signal, reducing unnecessary energy conversion.

[0179] It can be understood that in this example, the EPRE of the first positioning reference signal is related to the transmit power of the PSCCH and the comb value corresponding to the first positioning reference signal. The EPRE of the first positioning reference signal may be the same as or different from the EPRE of the PSCCH.

[0180] Example 4: The transmit power of PSCCH is related to the transmit power of the second positioning reference signal, the fourth ratio and the comb value corresponding to the second positioning reference signal. The fourth ratio is the ratio of the number of frequency domain resource subsets included in the first frequency domain resources to the number of frequency domain resource subsets included in the third frequency domain resources.

[0181] Exemplarily, the resource elements used to transmit the PSCCH are not distributed in a comb-tooth structure on the first frequency domain resources and the first time domain resources, or the comb-tooth value corresponding to the PSCCH is 1. The resource elements used to transmit the second positioning reference signal are distributed in a comb-tooth structure on the third frequency domain resources and the second time domain resources. The transmit power of the PSCCH is determined by the transmit power of the second positioning reference signal, the fourth ratio, and the comb-tooth value of the second positioning reference signal. For example, the transmit power of the PSCCH satisfies the following formula:

[0182] Among them, P PSCCH Indicates the transmit power of PSCCH in dBm. comb2 indicates the comb value corresponding to the second positioning reference signal, M′1 indicates the number of frequency domain resource subsets included in the first frequency domain resource, M′3 indicates the number of frequency domain resource subsets included in the third frequency domain resource, P PRS2 represents the transmit power of the second positioning reference signal, P PRS2 The unit is dBm.

[0183] It is understandable that the transmission power of the first positioning reference signal can be referred to the relevant description in Example 3, which will not be described in detail here.

[0184] In this example, the transmit power of the PSCCH can be adjusted based on the number of frequency domain resource subsets included in the first frequency domain resources and the number of frequency domain resource subsets included in the third frequency domain resources, so that the energy on each RE used to transmit the PSCCH is the same as the energy on each RE used to transmit the second positioning reference signal. That is, the second positioning reference signal and the PSCCH maintain the same EPRE. When resource sensing is performed between users, the RSRP measured based on the PSCCH can reflect the signal transmission status of the second positioning reference signal, reducing unnecessary energy conversion.

[0185] Example 5: The transmit power of the PSCCH is related to the transmit power of the second positioning reference signal, the first ratio, and the comb value corresponding to the first positioning reference signal.

[0186] Exemplarily, the resource elements used to transmit the PSCCH are not distributed in a comb-tooth structure on the first frequency domain resources and the first time domain resources, or the comb-tooth value corresponding to the PSCCH is 1. The resource elements used to transmit the first positioning reference signal are distributed in a comb-tooth structure on the second frequency domain resources and the first time domain resources. The transmit power of the PSCCH is determined by the transmit power of the second positioning reference signal, the first ratio, and the comb-tooth value of the first positioning reference signal. For example, the transmit power of the PSCCH satisfies the following formula:

[0187] Among them, P PSCCHIndicates the transmit power of PSCCH in dBm. comb1 indicates the comb value corresponding to the first positioning reference signal, M1 indicates the number of frequency domain units included in the first frequency domain resource, S indicates the first number, P PRS2 Indicates the transmit power of the second positioning reference signal.

[0188] Exemplarily, the transmission power of the first positioning reference signal can be expressed as: P PRS1 =P PRS2 -P PSCCH It is understandable that the transmit power of the first positioning reference signal can also be referred to the relevant description in Example 3, which will not be described in detail here.

[0189] In this example, the energy on each RE used to transmit the PSCCH is the same as the energy on each RE used to transmit the first positioning reference signal, that is, the first positioning reference signal and the PSCCH maintain the same EPRE, as shown in Figure 6D, and the energy on the RE corresponding to the PSCCH is the same as the energy on RE2.

[0190] Example 6: The transmit power of PSCCH is related to the sum of the number of frequency domain resource subsets included in the first frequency domain resources and the second frequency domain resources, the number of frequency domain resource subsets included in the first frequency domain resources, the transmit power of the second positioning reference signal, and the comb value corresponding to the first positioning reference signal.

[0191] Exemplarily, the resource units used to transmit the PSCCH are not distributed in a comb-tooth structure on the first frequency domain resources and the first time domain resources, or the comb-tooth value corresponding to the PSCCH is 1. The resource units used to transmit the first positioning reference signal are distributed in a comb-tooth structure on the second frequency domain resources and the first time domain resources. The transmit power of the PSCCH is determined by the sum of the number of frequency domain resource subsets contained in the first frequency domain resources and the second frequency domain resources, the number of frequency domain resource subsets contained in the first frequency domain resources, the transmit power of the second positioning reference signal, and the comb-tooth value corresponding to the first positioning reference signal. For example, the transmit power of the PSCCH satisfies the following formula:

[0192] Among them, P PSCCH Indicates the transmit power of PSCCH in dBm. comb1 indicates the comb value corresponding to the first positioning reference signal, M′1 indicates the number of frequency domain resource subsets included in the first frequency domain resource, S′ indicates the sum of the number of frequency domain resource subsets included in the first frequency domain resource and the second frequency domain resource, P PRS2 represents the transmit power of the second positioning reference signal, P PRS2 The unit is dBm.

[0193] Exemplarily, the transmission power of the first positioning reference signal can be expressed as: PPRS1 =P PRS2 -P PSCCH It is understandable that the transmit power of the first positioning reference signal can also be referred to the relevant description in Example 3, which will not be described in detail here.

[0194] In this example, the energy on each RE used to transmit the PSCCH is the same as the energy on each RE used to transmit the first positioning reference signal, that is, the first positioning reference signal and the PSCCH maintain the same EPRE.

[0195] It can be understood that the frequency domain unit in the embodiment of the present application can be a PRB or RB or subcarrier.

[0196] It is understood that the above-mentioned representations of the transmit power of the PSCCH and the transmit power of the first positioning reference signal are only some possible exemplary illustrations and should not be understood as limiting the embodiments of the present application. Embodiments obtained by supplementing or reasonably modifying the above-mentioned exemplary methods are all within the scope of protection of the embodiments of the present application.

[0197] The following describes the device provided in the embodiments of the present application.

[0198] The present application divides the functional modules of the communication device according to the above-mentioned method embodiment. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in this application is schematic and is only a logical functional division. There may be other division methods in actual implementation. The communication device of the embodiment of the present application will be described in detail below with reference to Figures 7 to 9.

[0199] FIG7 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. As shown in FIG7 , the communication device includes a processing unit 701 and a transceiver unit 702. The transceiver unit 702 can implement corresponding communication functions, and the processing unit 701 is used to process data. For example, the transceiver unit 702 can also be referred to as a communication interface or a communication unit.

[0200] In some embodiments of the present application, the communication device can be used to execute the actions performed by the first communication device in the above method embodiment. In this case, the communication device can be a first communication device or a terminal device, or the communication device can be a component that can be configured in the first communication device (such as a chip or system, etc.). The transceiver unit 702 is used to execute the transceiver-related operations of the first communication device in the above method embodiment, and the processing unit 701 is used to execute the processing-related operations of the first communication device in the above method embodiment.

[0201] Exemplarily, the processing unit 701 is configured to send a PSCCH through the transceiver unit 702 based on the first time domain resources and the first frequency domain resources, and send a first positioning reference signal through the transceiver unit 702 based on the first time domain resources and the second frequency domain resources.

[0202] It is understandable that specific descriptions of the first time domain resources, the first frequency domain resources, the second frequency domain resources, the PSCCH, and the first positioning reference signal, etc. can be referred to the method embodiment shown above and will not be described in detail here.

[0203] In other embodiments of the present application, the communication device can be used to execute the actions performed by the second communication device in the above method embodiment. In this case, the communication device can be the second communication device, or the communication device can be or can be configured as a component of the second communication device (such as a chip or system, etc.), the transceiver unit 702 is used to execute the transceiver-related operations of the second communication device in the above method embodiment, and the processing unit 701 is used to execute the processing-related operations of the second communication device in the above method embodiment.

[0204] Exemplarily, the processing unit 701 is configured to receive a PSCCH through the transceiver unit 702 based on first time domain resources and first frequency domain resources, and receive a first positioning reference signal through the transceiver unit 702 based on first time domain resources and second frequency domain resources.

[0205] It is understandable that specific descriptions of the first time domain resources, the first frequency domain resources, the second frequency domain resources, the PSCCH, and the first positioning reference signal, etc. can be referred to the method embodiment shown above and will not be described in detail here.

[0206] Optionally, the above-mentioned communication device may further include a storage unit, which may be used to store instructions and / or data. The processing unit 701 may read the instructions and / or data in the storage unit so that the communication device implements the above-mentioned method embodiment.

[0207] It can be understood that the specific description of the transceiver unit and the processing unit shown in the embodiment of the present application is only an example. For the specific functions or execution steps of the transceiver unit and the processing unit, please refer to the above-mentioned method embodiment and will not be described in detail here.

[0208] The above describes the communication device according to the embodiment of the present application. The following describes possible product forms of the communication device. It should be understood that any product having the functions of the communication device described in FIG. 7 falls within the scope of protection of the embodiment of the present application. It should also be understood that the following description is merely illustrative and does not limit the product forms of the communication device according to the embodiment of the present application to these examples.

[0209] In one possible implementation, in the communication device shown in FIG7 , the processing unit 701 may be one or more processors, the transceiver unit 702 may be a transceiver, or the transceiver unit 702 may be a transmitting unit and a receiving unit, the transmitting unit may be a transmitter, the receiving unit may be a receiver, and the transmitting unit and the receiving unit are integrated into a single device, such as a transceiver. In the embodiment of the present application, the processor and the transceiver may be coupled, etc., and the embodiment of the present application does not limit the connection method between the processor and the transceiver. During the execution of the above method, the process of sending information in the above method can be understood as the process of the processor outputting the above information. When outputting the above information, the processor outputs the above information to the transceiver so that the transceiver can transmit it. After being output by the processor, the above information may also need to undergo other processing before reaching the transceiver. Similarly, the process of receiving information in the above method can be understood as the process of the processor receiving the input information. When the processor receives the input information, the transceiver receives the above information and inputs it into the processor. Furthermore, after the transceiver receives the above information, the above information may need to be processed further before being received by the processor.

[0210] As shown in FIG. 8 , the communication device 80 includes one or more processors 820 and a transceiver 810 .

[0211] In some embodiments of the present application, the communication device may be used to execute the steps or functions performed by the first communication device in the above method embodiments.

[0212] Exemplarily, the processor 820 is configured to send a PSCCH through the transceiver 810 based on the first time domain resources and the first frequency domain resources, and send a first positioning reference signal through the transceiver 810 based on the first time domain resources and the second frequency domain resources.

[0213] In other embodiments of the present application, the communication device may be used to execute the steps or functions performed by the second communication device in the above method embodiments.

[0214] Exemplarily, the processor 820 is configured to receive a PSCCH through the transceiver 810 based on the first time domain resources and the first frequency domain resources, and receive a first positioning reference signal through the transceiver 810 based on the first time domain resources and the second frequency domain resources.

[0215] It will be understood that the specific descriptions of the transceiver and processor shown in the embodiments of the present application are merely examples. For the specific functions or execution steps of the transceiver and processor, reference may be made to the above-mentioned method embodiments, which will not be described in detail here.

[0216] In the above embodiments, the description of the first time domain resources, the first frequency domain resources, the second frequency domain resources, the PSCCH and the first positioning reference signal can also be referred to the introduction in the above method embodiments, and will not be described in detail here.

[0217] In various implementations of the communication device shown in FIG8 , the transceiver may include a receiver and a transmitter, wherein the receiver is configured to perform a receiving function (or operation) and the transmitter is configured to perform a transmitting function (or operation). The transceiver is configured to communicate with other devices / apparatuses via a transmission medium.

[0218] Optionally, the communication device 80 may further include one or more memories 830 for storing program instructions and / or data, etc. The memory 830 is coupled to the processor 820. The coupling in the embodiment of the present application is an indirect coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 820 may operate in conjunction with the memory 830. The processor 820 may execute program instructions stored in the memory 830. Optionally, at least one of the one or more memories may be included in the processor.

[0219] The specific connection medium between the transceiver 810, processor 820, and memory 830 is not limited in the embodiments of the present application. In Figure 8, the memory 830, processor 820, and transceiver 810 are connected via bus 840. The bus is represented by a bold line in Figure 8. The connection methods between other components are only for illustrative purposes and are not limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, Figure 8 only uses a single bold line, but this does not mean that there is only one bus or only one type of bus.

[0220] In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc., and may implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of the present application may be directly implemented as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor, etc.

[0221] In the embodiment of the present application, memory may include but is not limited to non-volatile memories such as hard disk drive (HDD) or solid-state drive (SSD), random access memory (RAM), erasable programmable read-only memory (EPROM), read-only memory (ROM) or portable read-only memory (CD-ROM), etc. Memory is any storage medium that can be used to carry or store program code in the form of instructions or data structures, and can be read and / or written by a computer (such as the communication device shown in the present application), but is not limited thereto. The memory in the embodiment of the present application can also be a circuit or other arbitrarily capable of realizing a storage function, for storing program instructions and / or data.

[0222] Illustratively, the processor 820 is primarily used to process communication protocols and communication data, control the entire communication device, execute software programs, and process software program data. The memory 830 is primarily used to store software programs and data. The transceiver 810 may include a control circuit and an antenna. The control circuit is primarily used to convert baseband signals into radio frequency signals and process radio frequency signals. The antenna is primarily used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input / output devices, such as a touch screen, display, and keyboard, are primarily used to receive user input and output data to the user.

[0223] When the communication device is powered on, the processor 820 can read the software program in the memory 830, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 820 performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the communication device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 820. The processor 820 converts the baseband signal into data and processes the data.

[0224] In another implementation, the RF circuit and antenna may be provided independently of the processor performing baseband processing. For example, in a distributed scenario, the RF circuit and antenna may be remotely arranged independent of the communication device.

[0225] It is understood that the communication device shown in the embodiment of the present application may also have more components than those in FIG8 , and the embodiment of the present application is not limited thereto. The method performed by the processor and transceiver shown above is only an example, and the specific steps performed by the processor and transceiver can refer to the method described above.

[0226] In another possible implementation, in the communication device shown in FIG7 , the processing unit 701 may be one or more logic circuits, and the transceiver unit 702 may be an input / output interface, or may be called a communication interface, or an interface circuit, or an interface, etc. Alternatively, the transceiver unit 702 may also be a sending unit and a receiving unit, the sending unit may be an output interface, the receiving unit may be an input interface, and the sending unit and the receiving unit are integrated into one unit, such as an input / output interface. As shown in FIG9 , the communication device shown in FIG9 includes a logic circuit 901 and an interface 902. That is, the above-mentioned processing unit 701 can be implemented with a logic circuit 901, and the transceiver unit 702 can be implemented with an interface 902. The logic circuit 901 may be a chip, a processing circuit, an integrated circuit, or a system on chip (SoC) chip, etc., and the interface 902 may be a communication interface, an input / output interface, a pin, etc. For example, FIG9 is illustrated using the above-mentioned communication device as a chip, and the chip includes a logic circuit 901 and an interface 902.

[0227] In the embodiment of the present application, the logic circuit and the interface may also be coupled to each other. The embodiment of the present application does not limit the specific connection method between the logic circuit and the interface.

[0228] In some embodiments of the present application, the communication device may be configured to execute the steps or functions performed by the first communication device in the above method embodiments. Exemplarily, logic circuit 901 is configured to output a PSCCH via interface 902 based on first time domain resources and first frequency domain resources, and to output a first positioning reference signal via interface 902 based on the first time domain resources and second frequency domain resources.

[0229] In other embodiments of the present application, the communication device may be configured to execute the steps or functions performed by the second communication device in the above method embodiments. Exemplarily, logic circuit 901 is configured to input a PSCCH via interface 902 based on a first time domain resource and a first frequency domain resource, and to input a first positioning reference signal via interface 902 based on the first time domain resource and the second frequency domain resource.

[0230] It can be understood that the specific description of the logic circuit and interface shown in the embodiments of the present application is only an example. For the specific functions or execution steps of the logic circuit and interface, please refer to the above-mentioned method embodiment and will not be described in detail here.

[0231] In the above embodiments, the description of the first time domain resources, the first frequency domain resources, the second frequency domain resources, the PSCCH and the first positioning reference signal can also be referred to the introduction in the above method embodiments, and will not be described in detail here.

[0232] It can be understood that the communication device shown in the embodiment of the present application can implement the method provided in the embodiment of the present application in the form of hardware, or can implement the method provided in the embodiment of the present application in the form of software, etc., and the embodiment of the present application is not limited to this.

[0233] An embodiment of the present application further provides a communication system, which includes a first communication device and a second communication device, and the first communication device and the second communication device are used to execute the method in any of the aforementioned embodiments.

[0234] In addition, the present application also provides a computer program, which is used to implement the operations and / or processing performed by the first communication device in the method provided by the present application.

[0235] The present application also provides a computer program, which is used to implement the operations and / or processing performed by the second communication device in the method provided by the present application.

[0236] The present application also provides a computer-readable storage medium, which stores computer code. When the computer code runs on a computer, the computer executes the operations and / or processing performed by the first communication device in the method provided by the present application.

[0237] The present application also provides a computer-readable storage medium having computer code stored therein. When the computer code is run on a computer, the computer executes the operations and / or processing performed by the second communication device in the method provided in the present application.

[0238] The present application also provides a computer program product, which includes computer code or computer program. When the computer code or computer program is run on a computer, the operations and / or processing performed by the first communication device in the method provided by the present application are executed.

[0239] The present application also provides a computer program product, which includes computer code or computer program. When the computer code or computer program is run on a computer, the operations and / or processing performed by the second communication device in the method provided by the present application are executed.

[0240] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, or can be electrical, mechanical or other forms of connection.

[0241] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the technical effects of the solutions provided in the embodiments of the present application.

[0242] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0243] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned readable storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0244] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that, Including: Transmitting a Physical Sidelink Control Channel (PSCCH) based on a first time-domain resource and a first frequency-domain resource; Transmitting a first positioning reference signal based on the first time-domain resource and a second frequency-domain resource, where the first frequency-domain resource and the second frequency-domain resource are frequency-domain resources in a resource set.

2. The method according to claim 1, wherein The sum of the bandwidths occupied by the first frequency-domain resource and the second frequency-domain resource is greater than or equal to a first threshold, and the first threshold is determined by the bandwidth of the resource set.

3. The method according to claim 1 or 2, characterized in that, The sum of the bandwidths occupied by the first frequency-domain resource and the second frequency-domain resource is equal to the bandwidth of the resource set.

4. The method according to any one of claims 1 to 3, characterized in that, The first frequency-domain resource includes one or more frequency-domain resource subsets, the second frequency-domain resource includes one or more frequency-domain resource subsets, and the frequency-domain resource subsets included in the first frequency-domain resource and the second frequency-domain resource are different.

5. The method according to claim 4, wherein The distribution of resource units for transmitting the first positioning reference signal on a first frequency-domain subset and the first time-domain resource is a comb structure, and the first frequency-domain resource subset is any one of the one or more frequency-domain resource subsets included in the second frequency-domain resource.

6. The method according to any one of claims 1-4, characterized in that The distribution of resource units for transmitting the first positioning reference signal on the second frequency-domain resource and the first time-domain resource is a comb structure.

7. The method according to claim 5 or 6, characterized in that, The PSCCH carries control information of a second positioning reference signal, and the second positioning reference signal is transmitted on a third frequency-domain resource and a second time-domain resource, where the third frequency-domain resource and the second time-domain resource are included in the resource set, and the comb value corresponding to the first positioning reference signal is the same as the comb value corresponding to the second positioning reference signal.

8. The method according to any one of claims 1-7, characterized in that, The PSCCH carries control information of a second positioning reference signal, and the second positioning reference signal is transmitted on a third frequency-domain resource and a second time-domain resource, where the third frequency-domain resource and the second time-domain resource are included in the resource set; the transmission power of the PSCCH or the first positioning reference signal is related to the transmission power of the second positioning reference signal.

9. The method according to claim 8, wherein The transmission power of the PSCCH is related to the transmission power of the second positioning reference signal and the number of frequency-domain units included in the first frequency-domain resource.

10. The method according to claim 8 or 9, characterized in that, The sum of the transmission power of the PSCCH and the transmission power of the first positioning reference signal is equal to the transmission power of the second positioning reference signal.

11. The method according to any one of claims 8-10, characterized in that, The transmission power of the PSCCH is related to the transmission power of the second positioning reference signal and a first ratio, where the first ratio is the ratio of the number of frequency-domain units included in the first frequency-domain resource to a first number, and the first number is the sum of the number of frequency-domain units included in the first frequency-domain resource and the second frequency-domain resource.

12. The method according to any one of claims 8 to 10, characterized in that, The transmission power of the PSCCH is related to the transmission power of the second positioning reference signal, a second ratio, and the comb value corresponding to the second positioning reference signal, where the second ratio is the ratio of the number of frequency-domain units included in the first frequency-domain resource to the number of frequency-domain units included in the third frequency-domain resource.

13. A communication method, characterized in that, Including: Receiving a Physical Sidelink Control Channel (PSCCH) based on a first time-domain resource and a first frequency-domain resource; Receive a first reference signal based on the first time-domain resource and the second frequency-domain resource, where the first frequency-domain resource and the second frequency-domain resource are frequency-domain resources in a resource set.

14. The method according to claim 13, wherein The sum of the bandwidths occupied by the first frequency-domain resource and the second frequency-domain resource is greater than or equal to a first threshold, and the first threshold is determined by the bandwidth of the resource set.

15. The method according to claim 13 or 14, characterized in that The sum of the bandwidths occupied by the first frequency-domain resource and the second frequency-domain resource is equal to the bandwidth of the resource set.

16. The method according to any one of claims 13-15, characterized in that, The first frequency-domain resource includes one or more frequency-domain resource subsets, the second frequency-domain resource includes one or more frequency-domain resource subsets, and the frequency-domain resource subsets included in the first frequency-domain resource and the second frequency-domain resource are different.

17. The method according to claim 16, wherein The distribution of the resource units for transmitting the first positioning reference signal on the first frequency-domain subset and the first time-domain resource is a comb structure, and the first frequency-domain resource subset is any one of the one or more frequency-domain resource subsets included in the second frequency-domain resource.

18. The method according to any one of claims 13-16, characterized in that, The distribution of the resource units for transmitting the first positioning reference signal on the second frequency-domain resource and the first time-domain resource is a comb structure.

19. The method according to claim 17 or 18, characterized in that, The PSCCH carries control information of a second positioning reference signal, and the second positioning reference signal is transmitted on a third frequency-domain resource and a second time-domain resource, where the third frequency-domain resource and the second time-domain resource are included in the resource set, and the comb value corresponding to the first positioning reference signal is the same as the comb value corresponding to the second positioning reference signal.

20. A communication device, characterized in that, Includes a unit for performing the method according to any one of claims 1-19.

21. A communication device, characterized in that, Includes a processor and a memory; The memory is used to store instructions; The processor is used to execute the instructions so that the method according to any one of claims 1-19 is executed.

22. A communication device, characterized in that, Includes a logic circuit and an interface, and the logic circuit and the interface are coupled; The interface is used to input and / or output code instructions, and the logic circuit is used to execute the code instructions so that the method according to any one of claims 1-19 is executed.

23. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program, and when the computer program is executed, the method according to any one of claims 1-19 is executed.

24. A computer program, characterized in that, When the computer program is executed, the method according to any one of claims 1-19 is executed.

25. A communication system, characterized in that, The communication system includes a first communication device and a second communication device, where the first communication device is used to perform the method according to any one of claims 1-12, and the second communication device is used to perform the method according to any one of claims 13-19.

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