Communication method, communication device and communication system

Abstract

A communication method, a communication device and a communication system are applied to the technical field of communication. The method comprises the following steps: a first communication device sends a physical sidelink control channel (PSCCH) based on a first time domain resource and a first frequency domain resource, and correspondingly, a second communication device receives the physical sidelink control channel (PSCCH) based on the first time domain resource and the first frequency domain resource; a first communication device sends a first positioning reference signal based on a first time domain resource and a second frequency domain resource, correspondingly, a second communication device receives the first positioning reference signal based on the first time domain resource and the second frequency domain resource, and the first frequency domain resource and the second frequency domain resource are frequency domain resources in a resource set. According to the embodiment of the invention, the OCB requirement of the unlicensed spectrum can be met, so that the method based on sidelink positioning can be applied to the unlicensed spectrum.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a communication method, a communication device, and a communication system. Background Art

[0002] In unlicensed spectrum transmission, a terminal device can select physical resources for data transmission in a resource pool, and the data sent by the terminal device on the physical resources needs to meet the transmission bandwidth requirement (OCB, Occupied Channel Bandwidth). For example, a single data transmission should occupy at least 80% of the entire bandwidth.

[0003] In a communication system based on sidelink positioning, terminal devices can measure each other through the sidelink to achieve mutual positioning between terminal devices. Exemplarily, a terminal device can send or receive a physical sidelink control channel (PSCCH) and a positioning reference signal (PRS) based on an exclusive resource pool, and the PSCCH carries the control information of the PRS. To support multi-user multiplexing, different terminal devices send PSCCHs in a frequency-division manner, that is, different terminal devices can send PSCCHs on the same time-domain resources and different frequency-domain resources.

[0004] However, the above method based on sidelink positioning does not meet the OCB requirements of unlicensed spectrum and cannot be applied to unlicensed spectrum. Summary of the Invention

[0005] Embodiments of this application provide a communication method, a communication device, and a communication system, which can meet the OCB requirements of unlicensed spectrum, enabling the method based on sidelink positioning to be applied to unlicensed spectrum.

[0006] In a first aspect, embodiments of this application provide a communication method, which is applied to a first communication device. It can be understood that this method can be executed by the first communication device, or can be a chip (system) or circuit for the first communication device, and this application does not make any limitations in this regard. The method includes:

[0007] Send a physical sidelink control channel PSCCH based on a first time-domain resource and a first frequency-domain resource; send 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.

[0008] In the embodiments of the present application, the resource set may be a resource set for positioning. For example, in a scenario of communication based on unlicensed spectrum, the resource set includes the resources occupied by the first communication device or the second communication device from the unlicensed spectrum resource pool after successful LBT. In the embodiments of the present application, the first positioning reference signal may be transmitted using the unoccupied frequency-domain resources of the PSCCH in the resource set to meet the OCB requirements of the unlicensed spectrum, so that the method for positioning based on the sidelink can be applied to the unlicensed spectrum.

[0009] In combination with the first aspect, in a 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.

[0010] In the embodiments of the present application, the first threshold may be determined by the bandwidth of the resource set and the OCB requirements of the unlicensed spectrum. For example, if the OCB requirement of the unlicensed spectrum is that a single data transmission should occupy at least 80% of the total bandwidth, then the first threshold is 80% of the bandwidth of the resource set. Determining the bandwidths of the first frequency-domain resource and the second frequency-domain resource based on the bandwidth of the resource set can ensure that the first communication device meets the OCB requirements of the unlicensed spectrum when transmitting the first positioning reference signal and the PSCCH.

[0011] In combination with the first aspect, in a possible implementation, 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.

[0012] In the embodiments of the present application, the first positioning reference signal and the PSCCH may occupy the entire resource set, which can make full use of the resources.

[0013] In combination with the first aspect, in a possible implementation, 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.

[0014] In the embodiments of the present application, the resource set may include multiple frequency-domain resource subsets, and the frequency-domain resource subset may be the basic bandwidth in the resource set. For example, the frequency-domain resources in the resource set may be allocated in units of frequency-domain resource subsets. Exemplarily, the frequency-domain resource subset may be a set of RBs in the unlicensed spectrum. In this implementation, the frequency-domain resources for the first positioning reference signal and the PSCCH are allocated in units of frequency-domain resource subsets, making the frequency-domain resource allocation more reasonable.

[0015] In combination with the first aspect, in a possible implementation manner, the resource units for transmitting the first positioning reference signal are distributed in a comb structure on the first frequency domain subset and the first time domain resource, and the first frequency domain resource subset is any one of one or more frequency domain resource subsets included in the second frequency domain resource.

[0016] In the embodiments of the present application, the second frequency domain resource includes one or more frequency domain resource subsets, and the resource units for transmitting the first positioning reference signal can be configured with the frequency domain resource subsets as the granularity, so that the distribution of the resource units for transmitting the first positioning reference signal is more reasonable.

[0017] In combination with the first aspect, in a possible implementation manner, the resource units for transmitting the first positioning reference signal are distributed in a comb structure on the second frequency domain resource and the first time domain resource.

[0018] In the embodiments of the present application, the second frequency domain resource can be regarded as a whole, and the resource units for transmitting the first positioning reference signal can be configured based on the second frequency domain resource, making the configuration of the resource units simpler.

[0019] In combination with the first aspect, in a possible implementation manner, the PSCCH carries the control information of the second positioning reference signal, the second positioning reference signal is transmitted on the third frequency domain resource and the second time domain resource, 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.

[0020] In the embodiments of the present application, the comb 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 value of the second positioning reference signal without reconfiguring the comb value of the first positioning reference signal, which can reduce the signaling overhead.

[0021] In combination with the first aspect, in a possible implementation manner, the PSCCH carries the control information of the second positioning reference signal, the second positioning reference signal is transmitted on the third frequency domain resource and the second time domain resource, 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.

[0022] In the embodiments of the present application, the transmission power of the PSCCH, the first positioning reference signal, or the second positioning reference signal can be understood as the transmission power of the PSCCH, the first positioning reference signal, or the second positioning reference signal in a transmission occasion or a time domain unit (such as a symbol). It can be understood that adjusting the transmission powers of the PSCCH and the first positioning reference signal based on the transmission power of the second positioning reference signal can ensure the consistency of power control between symbols and ensure the reliable transmission of the PSCCH and the first positioning reference signal.

[0023] In combination with the first aspect, in a possible implementation manner, 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.

[0024] In the embodiments of the present application, the larger the number of frequency domain units included in the first frequency domain resource, the greater the transmission power of the PSCCH, so as to ensure the energy per resource element (EPRE) of the PSCCH and ensure the reliable transmission of the PSCCH.

[0025] In combination with the first aspect, in a possible implementation manner, 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.

[0026] In the embodiments of the present application, the sum of the transmission power of the PSCCH and the transmission power of the first positioning reference signal being equal to the transmission power of the second positioning reference signal can make each transmission occasion or time domain unit (such as a symbol) have the same power, ensuring the consistency of power control between symbols.

[0027] In combination with the first aspect, in a possible implementation manner, 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 quantity, and the first quantity is the sum of the number of frequency domain units included in the first frequency domain resource and the second frequency domain resource.

[0028] In the embodiments of the present application, the transmission power of the first positioning reference signal is related to the transmission 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 quantity. It can be understood that adjusting the transmission power of the PSCCH based on the ratio of the number of frequency domain units included in the first frequency domain resource to the first quantity, and adjusting the transmission power of the first positioning reference signal based on the ratio of the number of frequency domain units included in the second frequency domain resource to the first quantity can make the first positioning reference signal and the PSCCH maintain the same power spectral density, reducing the difficulty of power control.

[0029] In combination with the first aspect, in a possible implementation, 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.

[0030] In the embodiments of the present application, the energy on each RE for transmitting the PSCCH is the same as the energy on each RE for transmitting the second positioning reference signal, that is, the second positioning reference signal and the PSCCH maintain the same EPRE. When resource sensing is performed among users, the RSRP measured based on the PSCCH can reflect the signal transmission situation of the second positioning reference signal, reducing unnecessary energy conversion.

[0031] In a second aspect, an embodiment of the present application provides a communication method applied to a second communication device. It can be understood that this method can be executed by the second communication device, or can be a chip (system) or circuit for the second communication device, and the present application does not make any limitations in this regard. The method includes:

[0032] Receiving a physical side link control channel PSCCH based on a first time domain resource and a first frequency domain resource; receiving a first 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.

[0033] In the embodiments of the present application, this resource set can be a resource set for positioning. For example, in a scenario of communication based on unlicensed spectrum, this resource set includes the resources occupied by the first communication device or the second communication device from the unlicensed spectrum resource pool after successful LBT. The embodiments of the present application can use the frequency domain resources in the resource set that are not occupied by the PSCCH to transmit a first positioning reference signal to meet the OCB requirements of the unlicensed spectrum, enabling the method for positioning based on the side link to be applied to the unlicensed spectrum. In addition, after receiving the first positioning reference signal, the second communication device can perform positioning estimation based on the first positioning reference signal, and the first positioning reference signal can provide an auxiliary effect to achieve higher-precision positioning.

[0034] In combination with the second aspect, in a 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.

[0035] In combination with the second aspect, in a possible implementation, 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.

[0036] In combination with the second aspect, in a possible implementation, 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.

[0037] In combination with the second aspect, in a possible implementation, 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.

[0038] In combination with the second aspect, in a possible implementation, 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.

[0039] In combination with the second aspect, in a possible implementation, the PSCCH carries the control information of the 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 value corresponding to the first positioning reference signal is the same as the comb value corresponding to the second positioning reference signal.

[0040] In a third aspect, an embodiment of the present application provides a communication device for performing the method in the first aspect or any possible implementation of the first aspect. The communication device includes a unit for performing the method in the first aspect or any possible implementation of the first aspect.

[0041] In a fourth aspect, an embodiment of the present application provides a communication device for performing the method in the second aspect or any possible implementation of the second aspect. The communication device includes a unit for performing the method in the second aspect or any possible implementation of the second aspect.

[0042] In the third aspect and the fourth aspect, the above communication device and communication device may include a transceiver unit and a processing unit. For a specific description of the transceiver unit and the processing unit, reference may also be made to the device embodiments shown below.

[0043] In a fifth aspect, an embodiment of the present application provides a communication device. The communication device includes a processor for performing the method shown in any one of the first aspect to the fourth aspect or any possible implementation. Alternatively, the processor is used to execute a program stored in a memory, and when the program is executed, the method shown in any one of the first aspect to the second aspect or any possible implementation is executed.

[0044] In a possible implementation, the memory is located outside the above-mentioned communication device.

[0045] In a possible implementation, the memory is located inside the above-mentioned communication device.

[0046] In the embodiments 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.

[0047] In a possible implementation, the communication device further includes a transceiver, which is used to receive signals or send signals.

[0048] In a sixth aspect, an embodiment of the present application provides a communication device, which includes a logic circuit and an interface, and the logic circuit is coupled to the interface; 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 output a first positioning reference signal through the interface based on the first time-domain resource and a second frequency-domain resource.

[0049] It can be understood that for the communication device shown in the sixth aspect, reference may also be made to the first aspect or the specific implementation manners shown below.

[0050] In a seventh aspect, an embodiment of the present application provides a communication device, which includes a logic circuit and an interface, and the logic circuit is coupled to the interface; the logic circuit is used to input a PSCCH through the interface based on a first time-domain resource and a first frequency-domain resource, and input a first positioning reference signal through the interface based on the first time-domain resource and a second frequency-domain resource.

[0051] It can be understood that for the communication device shown in the seventh aspect, reference may also be made to the second aspect or the specific implementation manners shown below.

[0052] In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, which is used to store a computer program. When it runs on a computer, the method shown in any one of the first aspect to the second aspect or any possible implementation manner is executed.

[0053] In a ninth aspect, an embodiment of the present application provides a computer program product, which includes a computer program. When it runs on a computer, the method shown in any one of the first aspect to the second aspect or any possible implementation manner is executed.

[0054] In a tenth aspect, an embodiment of the present application provides a computer program. When it runs on a computer, the method shown in any one of the first aspect to the second aspect or any possible implementation manner is executed.

[0055] In a tenth 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 configured to execute the method shown in the above first aspect or any possible implementation manner of the first aspect, and the second communication device is configured to execute the method shown in the above second aspect or any possible implementation manner of the second aspect. Description of the Drawings

[0056] The following introduces the drawings related to the embodiments of the present application.

[0057] Figure 1A It is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application;

[0058] Figure 1B It is an example of a communication scenario provided by an embodiment of the present application;

[0059] Figure 1C It is an example of another communication scenario provided by an embodiment of the present application;

[0060] Figure 2A It is a schematic diagram of a time-frequency resource provided by an embodiment of the present application;

[0061] Figure 2B It is a schematic diagram of another time-frequency resource provided by an embodiment of the present application;

[0062] Figure 3 It is a schematic flowchart of a communication method provided by an embodiment of the present application;

[0063] Figure 4 It is a schematic diagram of an unlicensed spectrum resource pool provided by an embodiment of the present application;

[0064] Figure 5 It is a schematic diagram of a resource set provided by an embodiment of the present application;

[0065] Figure 6A It is a schematic diagram of the distribution of resource units provided by an embodiment of the present application;

[0066] Figure 6B It is a schematic diagram of another distribution of resource units provided by an embodiment of the present application;

[0067] Figure 6C It is a schematic diagram of the distribution of an interleaving provided by an embodiment of the present application;

[0068] Figure 6D It is a schematic diagram of yet another distribution of resource units provided by an embodiment of the present application;

[0069] Figure 7 It is a schematic diagram of the structure of a communication device provided by an embodiment of the present application;

[0070] Figure 8 It is a schematic structural diagram of another communication device provided by an embodiment of the present application;

[0071] Figure 9 It is a schematic structural diagram of yet another communication device provided by an embodiment of the present application. Detailed implementation manners

[0072] Terms such as "first" and "second" in the description, claims and drawings of the present application are only used to distinguish different objects, rather than to define the order, timing, priority or importance of multiple objects. In the embodiments of the present application, "a plurality of" means two or more. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device etc. that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices etc. Additionally, the character " / " generally represents an "or" relationship between the associated objects before and after, unless otherwise specified.

[0073] The mention of "embodiment" in this article means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0074] It should be understood that in the present application, "at least one (item)" means one or more, "a plurality of" means two or more, "at least two (items)" means two or three and more than three, and "and / or" is used to describe the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can mean: only A exists, only B exists, and both A and B exist at the same time. Here, A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after. "At least one (one) of the following" or its similar expression means any combination of these items, including any combination of single item (one) or plural items (ones). For example, at least one (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.

[0075] The method provided by this application can be applied to various communication systems. For example, it can be an Internet of Things (IoT) system, a Narrow Band Internet of Things (NB-IoT) system, a Long Term Evolution (LTE) system, or a 5th-generation (5G) communication system, as well as new communication systems emerging in the future development of communications (such as 6G), etc.

[0076] The technical solution provided by this application can also be applied to Machine Type Communication (MTC), Long Term Evolution-Machine (LTE-M), Device-to-Device (D2D) networks, Machine-to-Machine (M2M) networks, Internet of Things (IoT) networks, or other networks. Among them, the IoT network can include, for example, the vehicle-to-everything (V2X) network. Among them, the communication methods in the vehicle-to-everything system are collectively referred to as vehicle-to-everything (V2X, where X can represent anything). For example, the V2X can include: vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, or vehicle-to-network (V2N) communication, etc. Exemplarily, in Figure 1A or Figure 1B or Figure 1C shown below, the terminal devices can communicate with each other through D2D technology, M2M technology, or V2X technology, etc.

[0077] 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, etc. The network device may be any device with wireless transceiver functions, such as a base station. The base station may have various forms, such as a macro base station, a micro base station, a relay station, and an access point. 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 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 a vehicle-mounted device, etc. Optionally, the network device may also be a small station, a transmission reception point (TRP) (or may also be referred to as a transmission point), a transmission measurement function (TMF), etc. It can be understood that the network device may also be a base station in a future evolved public land mobile network (PLMN), etc.

[0078] In some deployments, a base station (such as a gNB) may 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 a DU. And multiple DUs share a CU, which can save costs and facilitate network expansion. In some other deployments of the base station, the CU may also be divided into a CU-control plane (CP) and a CU-user plane (UP), etc. In some other deployments of the base station, the base station may also be an open radio access network (ORAN) architecture, etc. The present application does not limit the specific type of the base station.

[0079] The terminal device in the embodiments of this application can also be referred to as a user equipment (UE), a terminal, etc. A terminal device is a device with wireless transceiver functions, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water, such as on a ship, etc.; it can also be deployed in the air, for example, deployed on an airplane, a balloon or a satellite, etc. The terminal device can be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver functions, 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, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a customer-premises equipment (CPE), and so on. It can be understood 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.

[0080] It can be understood that the terminal device shown in this application can not only include a vehicle in the vehicle-to-everything (V2X) network (such as a whole vehicle), but also include in-vehicle devices or in-vehicle terminals in the V2X network, etc. This application does not limit the specific form of the terminal device when it is applied to the V2X network.

[0081] In a wireless communication system, terminal devices can communicate with each other through a network device, or can directly communicate between terminal devices without relying on a network device. The communication in which terminal devices directly transmit data without relying on a network device can be called sidelink (SL) communication. Exemplarily, Figure 1A FIG. is a schematic diagram of the architecture of a communication system provided for the embodiments of this application. In sidelink communication, the communication system can include at least two terminal devices. Figure 1AExemplarily, two terminal devices are shown, namely UE1 and UE2. The interface between UE1 and UE2 is called the PC5 interface, and the communication link between UE1 and UE2 is called the sidelink. Data can be directly transmitted between UE1 and UE2 through the sidelink without passing through the network, which can effectively reduce communication latency. For example, one application scenario of the sidelink communication system can be vehicle-to-everything (V2X). In V2X, each vehicle is a terminal device, and data can be directly transmitted between vehicles through the sidelink.

[0082] In the above communication system, the spectrum resources can be divided into licensed spectrum and unlicensed spectrum. In the unlicensed spectrum, the terminal device needs to select the physical resources for data transmission in the resource pool. For example, the terminal device can preempt the channel through listen before talk (LBT), or share the resources obtained after other terminal devices preempt the channel to transmit data. In unlicensed spectrum transmission, the occupied channel bandwidth (OCB) needs to be satisfied. For example, a single data transmission should occupy at least 80% of the total bandwidth.

[0083] In the above communication system, UEs can measure each other through the sidelink to achieve mutual positioning between UEs, which is also called sidelink positioning. Exemplarily, the scenarios based on sidelink positioning can include in-network coverage scenarios, out-of-network coverage scenarios, and partial network coverage scenarios. The in-network coverage scenario means that the UEs connected through the PC5 interface are all within the network coverage of the access network. As Figure 1B shown, UE1 and UE2 are connected through the PC5 interface, both UE1 and UE2 are within the coverage of the network device (gNB), and UE1 and UE2 can be connected to the gNB through the Uu interface. The out-of-network coverage scenario means that the UEs connected through the PC5 interface are all outside the network coverage of the access network. As Figure 1A shown, both UE1 and UE2 are outside the network coverage of the access network. The partial network coverage scenario means that one of the two UEs connected through the PC5 interface is outside the network coverage of the access network, and the other UE is within the network coverage of the access network. As Figure 1C shown, UE1 is outside the coverage of the gNB, UE2 is within the coverage of the gNB, UE1 and UE2 are connected through the PC5 interface, and UE2 is connected to the gNB through the Uu interface.

[0084] In a communication system based on sidelink positioning, positioning can be performed based on a positioning reference signal (PRS), which can also be referred to as SL-PRS. For example, UE1 sends a PRS to UE2, and UE2 can determine the location information of UE1 or UE2 based on this PRS.

[0085] In a possible implementation, to provide a larger bandwidth, UE1 can send this PRS based on an exclusive resource pool, and the resources in the exclusive resource pool are used to transmit the PRS. Exemplarily, the bandwidth occupied by this PRS is the same as the bandwidth of this resource pool, and a comb structure is adopted. The resource element (RE) used to transmit this PRS can be determined by the RE-offset corresponding to this UE1, and this RE-offset is used to indicate the number of REs between the starting RE for transmitting the PRS on a symbol and the starting RE in the resource pool, or this RE-offset is used to indicate the number of REs between the starting RE for transmitting the PRS on a symbol and the reference RE in the resource pool. The above-mentioned symbol can be understood as the first symbol of the resources occupied by the PRS, or any symbol of the occupied resources.

[0086] Exemplarily, before sending the PRS, UE1 also sends a physical sidelink control channel (PSCCH), and this PSCCH carries the control information of this PRS. For example, this control information can include the index of the resources for transmitting this PRS, the comb value corresponding to this PRS, etc. There is a one-to-one relationship between the PSCCH and the PRS. To support multi-user multiplexing, different UEs can send PSCCHs on the same time-domain resources, and the frequency-domain resources corresponding to the PSCCHs sent on different UEs are different. Different UEs can send PRSs on the same time-frequency resources, and the RE-offsets corresponding to different UEs are different. As Figure 2A shown, both UE1 and UE2 send PSCCHs on time-domain resource 1 and send PRSs on time-domain resource 2. Among them, UE1 sends the PSCCH on frequency-domain resource 1, and UE2 sends the PSCCH on frequency-domain resource 2. UE1 sends the PRS in a comb structure (as Figure 2A shown by the slant-filled box), the comb value corresponding to UE1 is 4, and the corresponding RE-offset is 2. UE2 sends the PRS in a comb structure (as Figure 2A shown by the gray-filled box), the comb value corresponding to UE2 is 4, and the corresponding RE-offset is 0. Optionally, an Automatic Gain Control (AGC) symbol can also be included before time-domain resource 1.

[0087] Exemplarily, as Figure 2B shown, an AGC symbol may also be included between time domain resource 1 and time domain resource 2 to indicate the transmission power of the PRS.

[0088] Exemplarily, the transmission power of the PRS sent by the terminal device on the transmission occasion i of the SL partial bandwidth (BandwidthPart, BWP) b of the carrier f satisfies:

[0089] P PRS (i) = min(P CMAX , P MAX，CBR , min(P PRS，D (i), P PRS，SL (i))) (1)

[0090] Wherein, P PRS (i) represents the transmission power of the PRS on the transmission occasion i, and the unit may be dBm. P CMAX represents the maximum transmission power of the terminal device, which is related to the network congestion rate (Channel busy ratio, CBR) and the transmission priority, and may be indicated by a higher layer parameter. When P MAX，CBR is not configured, P MAX，CBR = P CMAX .

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

[0092]

[0093] Wherein, is the target reception power, representing the P0 value of power control indicated by a higher layer parameter. represents the number of physical resource blocks (physical resource block, PRB) occupied by the PRS. The parameter α D is indicated by a higher layer parameter. If the parameter α D has no configured value, the default value of the parameter α D is 1.

[0094] The above P PRS，SL (i) satisfies:

[0095]

[0096] Wherein, represents the P0 value of power control indicated by a higher layer parameter. represents the number of PRBs occupied by the PRS. α SL represents the path loss coefficient, which is indicated by a higher layer parameter. PL SLIndicates the path loss of the sidelink, this PL SL Is obtained by subtracting the transmission power of the PRS from the L3-reference signal receiving power (RSRP) fed back by the receiving end, that is, PL SL Is the difference between the transmission power of the PRS and the receiving power of this PRS.

[0097] Exemplarily, the transmission power of the above-mentioned PSCCH can be the same as that of the PRS, that is, P PSCCH (i) = P PRS (i).

[0098] However, the above method based on sidelink positioning does not meet the OCB requirements of unlicensed spectrum and cannot be applied to unlicensed spectrum. As Figure 2A Shown, when UE1 sends PSCCH, the occupied bandwidth is the bandwidth of frequency domain resource 1, and the bandwidth of this frequency domain resource 1 is less than 80% of the full bandwidth of the resource pool, so it does not meet the OCB requirements of unlicensed spectrum.

[0099] In view of this, the embodiments of the present application provide a communication method, a communication device and a communication system, which can meet the OCB requirements of unlicensed spectrum, so that the method based on sidelink positioning can be applied to unlicensed spectrum. The method provided by the embodiments of the present application can be applied to Figure 1A or Figure 1B or Figure 1C The communication systems shown. Alternatively, the method can be applied to a first communication device and a second communication device, and the first communication device and the second communication device can be the terminal devices described above.

[0100] Please refer to Figure 3 , Figure 3 Is a schematic flowchart of a communication method provided by an embodiment of the present application. As Figure 3 Shown, the method includes but is not limited to the following steps.

[0101] 301. The first communication device sends a PSCCH based on a first time domain resource and a first frequency domain resource. Correspondingly, the second communication device receives the PSCCH based on the first time domain resource and the first frequency domain resource.

[0102] 302. The first communication device sends a first positioning reference signal based on the first time domain resource and a second frequency domain resource. Correspondingly, the second communication device receives the first positioning reference signal based on the first time domain resource and the second frequency domain resource.

[0103] The first frequency domain resource and the second frequency domain resource are frequency domain resources in a resource set. The resource set can be a resource set for positioning.

[0104] Exemplarily, in a scenario of communication based on unlicensed spectrum, the resource set includes the resources occupied after the first communication device or the second communication device succeeds in LBT. For example, the resource pool of unlicensed spectrum includes multiple resource block (RB) sets. The first communication device or the second communication device can perform LBT operations on multiple RB sets in the unlicensed spectrum through LBT. The first communication device or the second communication device can transmit data on the RB sets where LBT is successful. The above resource set includes the RB sets where LBT is successful. As Figure 4 shown, the resource pool of unlicensed spectrum may include 5 RB sets, namely RB set#0 - RB set#4. Among them, LBT fails for RB set#1, and LBT is successful for RB set#0, RB set#2, RB set#3, and RB set#4. The above resource set may include RB set#0, RB set#2, RB set#3, and RB set#4.

[0105] Exemplarily, in the resource pool of unlicensed spectrum, there is a guard band between two consecutive RB sets. In the case where the resource set includes two consecutive RB sets, the resource set may include the guard band between these two consecutive RB sets. That is, when LBT is successful for two consecutive RB sets, the guard band between these two RB sets can also be used to transmit data.

[0106] Exemplarily, the bandwidth occupied by an RB set in unlicensed spectrum can be 20 MHz, or approximately 20 MHz. The bandwidths of the RB set and the guard band can also be related to the subcarrier spacing. For example, when the subcarrier spacing is 15 KHz, an RB set occupies 105 PRBs, and the guard band occupies 6 PRBs. It can be understood that the bandwidths of the RB set and the guard band can also be defined by the protocol.

[0107] In a 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, and 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 should 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.

[0108] Exemplarily, 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. That is, the first positioning reference signal and the PSCCH can occupy the entire resource set, enabling full utilization of the resources. For example, Figure 5 As shown, taking one time slot in the resource set as an example, the first symbol of this time slot is an AGC symbol, which is used to adjust the transmission power of the PSCCH and the first positioning reference signal. The above-mentioned first time-domain resource can start from the second symbol of this time slot. For example, the first time-domain resource can occupy 2 to 3 symbols. The first frequency-domain resource can occupy X PRBs or Y sub-channels, where both X and Y are integers greater than 0. The second frequency-domain resource can include other frequency-domain resources in the resource set except for the first frequency-domain resource, that is, the second frequency-domain resource includes the PRBs or sub-channels in the resource set that are not included in the first frequency-domain resource.

[0109] Exemplarily, the PSCCH carries the control information of the second positioning reference signal, and the second positioning reference signal is transmitted on the third frequency-domain resource and the second time-domain resource, and the third frequency-domain resource and the second time-domain resource are included in the resource set. The second time-domain resource is different from the first time-domain resource. The first communication device also transmits the 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 the union of the first frequency-domain resource and the second frequency-domain resource. The distribution of the REs for transmitting 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.

[0110] Exemplarily, the first communication device also transmits the second positioning reference signal based on the second time-domain resource and the third frequency-domain resource. For example, Figure 5 As shown, taking one time slot in the resource set as an example, the second time-domain resource can include other symbols in this time slot. Optionally, there may also be an AGC symbol between the first time-domain resource and the second time-domain resource, and the last symbol of this time slot can be a GAP symbol.

[0111] In the embodiments of the present application, the first positioning reference signal can be transmitted using the frequency-domain resources not occupied by the 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 can perform positioning estimation based on the first positioning reference signal, and the first positioning reference signal can provide an auxiliary effect to achieve higher-precision positioning.

[0112] In a possible implementation, the transmission power of the PSCCH or the first positioning reference signal is related to the transmission power of the second positioning reference signal.

[0113] The transmission power of the PSCCH, the first positioning reference signal, or the second positioning reference signal can be understood as the transmission power of the PSCCH, the first positioning reference signal, or the second positioning reference signal in a transmission occasion or a time domain unit (such as a symbol). The transmission power of the PSCCH and the transmission power of the first positioning reference signal can be determined by the transmission power of the second positioning reference signal. For example, 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.

[0114] Exemplarily, the transmission power of the second positioning reference signal can be determined by one or more of the maximum transmission 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 reception power, the path loss coefficient, and the high-layer parameters. For example, the transmission power of the second positioning reference signal can be as shown in formula (1).

[0115] Exemplarily, the larger the comb value corresponding to the second positioning reference signal, the greater the energy per resource unit of the second positioning reference signal.

[0116] Exemplarily, 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. For example, the larger the number of frequency domain units included in the first frequency domain resource, the greater the transmission power of the PSCCH, so as to ensure the energy per resource element (EPRE) of the PSCCH and ensure the reliable transmission of the PSCCH.

[0117] Exemplarily, the transmission power of the first positioning reference signal is related to the transmission power of the second positioning reference signal and the number of frequency domain units included in the second frequency domain resource. For example, the larger the number of frequency domain units included in the second frequency domain resource, the greater the transmission power of the first positioning reference signal.

[0118] In this implementation manner, the transmission powers of the PSCCH and the first positioning reference signal can be adjusted based on the transmission power of the second positioning reference signal, so as to ensure the inter-symbol power control consistency and ensure the reliable transmission of the PSCCH and the first positioning reference signal.

[0119] Regarding the above first frequency domain resource and second frequency domain resource, the embodiments of the present application also provide the following several implementation manners:

[0120] Implementation manner 1: 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.

[0121] Exemplarily, the bandwidth of the frequency-domain resource subset may be the basic bandwidth in the resource set, and the frequency-domain resources in the resource set may be allocated in units of the frequency-domain resource subset. A frequency-domain resource subset may be a set of RBs in the unlicensed spectrum, or a frequency-domain resource subset may include at least one set of RBs. For example, the first frequency-domain resource includes one or more sets of RBs in the unlicensed spectrum, and the second frequency-domain resource includes one or more sets of RBs in the unlicensed spectrum. The frequency-domain resource subsets included in the first frequency-domain resource and the second frequency-domain resource are different, which can be understood as that the frequency-domain resource subsets included in the first frequency-domain resource are not included in the second frequency-domain resource.

[0122] It can be understood that when there are two consecutive sets of RBs in one or more sets of RBs included in the first frequency-domain resource, the first frequency-domain resource includes the guard band between the two sets of RBs. When there are two consecutive sets of RBs in one or more sets of RBs included in the second frequency-domain resource, the second frequency-domain resource includes the guard band between the two sets of RBs.

[0123] In this implementation manner, the frequency-domain resources can be allocated in units of the frequency-domain resource subset, making the frequency-domain resource allocation more reasonable.

[0124] As an example, 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 one or more frequency-domain resource subsets included in the second frequency-domain resource.

[0125] 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 the resource units for transmitting the first positioning reference signal can be represented by the distribution of the subcarriers for transmitting the first positioning reference signal. On a time-domain unit and the first frequency-domain resource subset, the interval between any two adjacent resource units among the multiple resource units for transmitting the 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 the interval between any two adjacent resource units among the multiple resource units is N - 1 resource units. Here, N is any positive integer. For example, N can be 1, 2, 4, 6, 12, etc.

[0126] When the comb value corresponding to the first positioning reference signal is 1, the multiple resource units are continuous on a time-domain unit and the first frequency-domain resource subset, which can be understood as that the first positioning reference signal does not adopt a comb structure. As Figure 6A shown, all resource units in a time-domain unit and the first frequency-domain resource subset transmit the first positioning reference signal.

[0127] When the comb value N corresponding to the first positioning reference signal is not 1, the multiple resource units are discretely distributed in one time domain unit and the first frequency domain resource subset, and there are N - 1 resource units between any two adjacent resource units. As Figure 6B shown, taking N = 4 as an example, there are 3 resource units between any two adjacent resource units among the multiple resource units (as shown by the gray filled boxes in Figure 6B ).

[0128] It can be understood that the distribution of the resource units for transmitting the first positioning reference signal in other frequency domain resource subsets included in the second frequency domain resource can also be a comb structure. Here, taking the first frequency domain resource subset as an example, the description of other frequency domain resource subsets can refer to the relevant description of the first frequency domain resource subset above, and will not be elaborated here. The comb values corresponding to the first positioning reference signal on one or more frequency domain resource subsets included in the second frequency domain resource can be different or the same, and the present application does not make any restrictions.

[0129] It can be understood that the above describes the distribution of the resource units for transmitting the first positioning reference signal in one time domain unit and the first frequency domain resource subset. When the first time domain resource includes multiple time domain units, the distribution of the resource units for transmitting the first positioning reference signal on other time domain units can also refer to the description of this time domain unit, and will not be elaborated here.

[0130] Exemplarily, in the case where the above first time domain resource includes multiple time domain units, the distribution of the multiple resource elements (REs) for transmitting the first positioning reference signal is related to the comb value corresponding to the first reference signal and the RE offset. On each time domain unit, the position of the RE for transmitting the first positioning reference signal in the first frequency domain resource subset is related to the RE offset corresponding to this time domain unit. The RE offset corresponding to a time domain unit is used to represent the number of resource units between the starting resource unit for transmitting the first positioning reference signal on this time domain unit and the starting resource unit of the first frequency domain resource subset, or the RE offset corresponding to a time domain unit is used to indicate the number of REs between the starting RE for transmitting the first positioning reference signal on this time domain unit and the reference RE in the first frequency domain resource subset. As Figure 6B shown, there are 3 resource units between the starting resource unit for transmitting 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.

[0131] It can be understood that the RE offsets corresponding to each time domain unit in the embodiments of the present application can be the same or different, and the present application does not make any restrictions on this.

[0132] In this example, the second frequency-domain resource includes one or more subsets of frequency-domain resources. The resource units for transmitting the first positioning reference signal can be configured in terms of the subsets of frequency-domain resources, so that the distribution of the resource units for transmitting the first positioning reference signal is more reasonable.

[0133] As another example, 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.

[0134] It can be understood 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 can refer to the distribution of the resource units for transmitting the first positioning reference signal on the first subset of frequency-domain resources and the first time-domain resource above, which will not be elaborated here.

[0135] In this example, the second frequency-domain resource can be regarded as a whole, and the resource units for transmitting the first positioning reference signal can be configured based on the second frequency-domain resource, making the configuration of the resource units simpler.

[0136] Exemplarily, the comb value corresponding to the above first positioning reference signal can 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 is different from the comb value corresponding to the second positioning reference signal.

[0137] As yet another example, the distribution of the frequency-domain units for transmitting the first positioning reference signal on the second frequency-domain resource is an interleaved distribution. The second frequency-domain resource can include one or more interleaves (Interlace) for transmitting the first positioning reference signal.

[0138] Exemplarily, the interleave can also be referred to as a stagger. An interleave can 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 interleaves 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, an interleave can include 10 or 11 PRBs. In the case of a subcarrier spacing of 15 kHz, the second frequency-domain resource can include 10 interleaves, and the spacing between two adjacent PRBs within an interleave is 9 PRBs. In the case of a subcarrier spacing of 30 kHz, the second frequency-domain resource can include 5 interleaves, and the spacing between two adjacent PRBs within an interleave is 10 PRBs.

[0139] As Figure 6C shown, Figure 6CTaking the bandwidth of the second frequency-domain resource as 20 MHz and the subcarrier spacing as 30 kHz as an example, the number of PRBs included in the second frequency-domain resource is 52, and the number of interleavings is 5. The number of PRBs included in each interleaving is 11 or 10. Among them, the indexes of the PRBs included in the interleaving with the interleaving index of 1 are 0, 5,..., 45, 50. When the index of the interleaving used to transmit the first positioning reference signal is 1, the frequency-domain units used to transmit the first positioning reference signal in the second frequency-domain resource are respectively indexed as 0, 5,..., 45, 50.

[0140] It can be understood that Figure 6C The distribution of the second frequency-domain resource and the interleavings shown is only an example and should not be construed as a limitation on this application. For second frequency-domain resources with different bandwidths, the number of PRBs included is different, and the interleavings in the second frequency-domain resource can be extended in an equally spaced manner.

[0141] It can be understood that Figure 6C The indexes of the above PRBs and interleavings are only examples and should not be construed as a limitation on this application. In some possible implementation manners, the index of the above interleaving is related to the carrier. Therefore, the first PRB in the second frequency-domain resource is not necessarily included in the first interleaving of the second frequency-domain resource, that is, the interleavings in the second frequency-domain resource are not necessarily numbered starting from 0. For example Figure 6C The PRB with index 0 in the second frequency-domain resource is included in the interleaving with index 1, that is, the interleavings in the second frequency-domain resource are numbered starting from 1.

[0142] Exemplarily, one interleaving can map to the data of one subchannel, one subchannel can correspond to one interleaving, or one subchannel can correspond to two consecutive interleavings.

[0143] In some possible implementation manners, the distribution of the frequency-domain units used to transmit the first positioning reference signal on the first frequency-domain resource subset is an interleaved distribution, and the first frequency-domain resource subset includes one or more interleavings used to transmit the first positioning reference signal.

[0144] In this example, the first positioning reference signal can be transmitted in an interleaved manner so that the bandwidth occupied by the first positioning reference signal can meet the OCB requirements of the unlicensed spectrum.

[0145] Implementation manner two: The resource set includes multiple frequency-domain resource subsets. The first frequency-domain resource is included in the second frequency-domain resource subset, and 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.

[0146] Exemplarily, the second frequency-domain resource may further include the frequency-domain resources other than the first frequency-domain resource in the second frequency-domain resource subset.

[0147] In this implementation manner, when the bandwidth occupied by the PSCCH is small, for example, when the bandwidth occupied by the PSCCH is less than the bandwidth of the second frequency-domain resource subset, the above first positioning reference signal may 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 the PSCCH, so as to avoid waste of resources.

[0148] Regarding the transmission power of the PSCCH and the first positioning reference signal, several examples are further provided in the embodiments of the present application as follows.

[0149] Example 1: The transmission power of the PSCCH is related to the transmission power of the second positioning reference signal and a first ratio. The first ratio is the ratio of the number of frequency-domain units included in the first frequency-domain resource to a first quantity, and the first quantity is the sum of the number of frequency-domain units included in the first frequency-domain resource and the second frequency-domain resource. The transmission power of the first positioning reference signal is related to the transmission power of the second positioning reference signal and a third ratio. The third ratio is the ratio of the number of frequency-domain units included in the second frequency-domain resource to the first quantity. Alternatively, the transmission power of the first positioning reference signal is determined by the transmission power of the PSCCH and the transmission power of the second positioning reference signal. For example, the transmission power of the first positioning reference signal is equal to the difference between the transmission power of the second positioning reference signal and the transmission power of the PSCCH.

[0150] For example, the transmission power of the PSCCH can be expressed as:

[0151]

[0152] Among them, P PSCCH represents the transmission power of the PSCCH, and the unit of P PSCCH is dBm. M1 represents the number of frequency-domain units included in the first frequency-domain resource, S represents the first quantity, P PRS2 represents the transmission power of the second positioning reference signal, and the unit of P PRS2 is dBm.

[0153] The transmission power of the first positioning reference signal can be expressed as:

[0154]

[0155] Among them, P PRS1 represents the transmission power of the first positioning reference signal, and the unit is dBm. M2 represents the number of frequency-domain units included in the second frequency-domain resource, S represents the first quantity, P PRS2 represents the transmission power of the second positioning reference signal, and P PRS2The unit is dBm.

[0156] In a possible implementation, the transmission power of the PSCCH can be determined by the ratio of the transmission power of the first positioning reference signal to the number of frequency domain units included in the first frequency domain resource and the number of frequency domain units included in the second frequency domain resource. For example, the transmission power of the PSCCH can be expressed as:

[0157]

[0158] Where, P PSCCH represents the transmission power of the PSCCH, and P PSCCH has the unit of 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 represents the transmission power of the first positioning reference signal, with the unit of dBm.

[0159] In a possible implementation, the transmission power of the first positioning reference signal can be determined by the ratio of the transmission power of the PSCCH to the number of frequency domain units included in the second frequency domain resource and the number of frequency domain units included in the first frequency domain resource. For example, the transmission power of the first positioning reference signal can be expressed as:

[0160]

[0161] Where, P PSCCH represents the transmission power of the PSCCH, and P PSCCH has the unit of 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 represents the transmission power of the first positioning reference signal, with the unit of dBm.

[0162] It can be understood that in the case where the third frequency domain resource is the union 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 included 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 included in the first frequency domain resource to the number of frequency domain resources included in the third frequency domain resource.

[0163] In this example, the distribution of the REs for transmitting the second positioning reference signal is a comb structure, and the EPRE of the second positioning reference signal can be greater than the EPREs of the first positioning reference signal and the PSCCH.

[0164] In this example, by adjusting the transmission power of the PSCCH based on the ratio of the number of frequency domain units included in the first frequency domain resource to the first quantity, and adjusting the transmission power of the first positioning reference signal based on the ratio of the number of frequency domain units included in the second frequency domain resource to the first quantity, the first positioning reference signal and the PSCCH can maintain the same power spectral density, reducing the difficulty of power control.

[0165] Example 2: The transmission power of the PSCCH can be determined by the sum of the number of frequency domain resource subsets included in the first frequency domain resource and the second frequency domain resource, the number of frequency domain resource subsets included in the first frequency domain resource, and the transmission power of the second positioning reference signal. The transmission 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 resource and the second frequency domain resource, the number of frequency domain resource subsets included in the second frequency domain resource, and the transmission power of the second positioning reference signal.

[0166] For example, the transmission power of the PSCCH can be expressed as:

[0167]

[0168] where, P PSCCH represents the transmission power of the PSCCH, and the unit of P PSCCH 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 transmission power of the second positioning reference signal, and the unit of P PRS2 is dBm.

[0169] The transmission power of the first positioning reference signal can be expressed as:

[0170]

[0171] where, P PRS1 represents the transmission power of the first positioning reference signal, with the unit of 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, and P PRS2 represents the transmission power of the second positioning reference signal, and the unit of P PRS2 is dBm.

[0172] It can be understood that in the case where the third frequency domain resource is the union of the first frequency domain resource and the second frequency domain resource, the above S′ can represent the number of frequency domain resource subsets included in the third frequency domain resource.

[0173] In a possible implementation, the transmission power of the PSCCH can be determined by the transmission power of the first positioning reference signal and the ratio of the number of frequency-domain resource subsets included in the first frequency-domain resource to the number of frequency-domain resource subsets included in the second frequency-domain resource. For example, the transmission power of the PSCCH can be expressed as:

[0174]

[0175] where P PSCCH represents the transmission power of the PSCCH, and the unit of P PSCCH 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 represents the transmission power of the first positioning reference signal, with the unit of dBm.

[0176] In a possible implementation, the transmission power of the first positioning reference signal can be determined by the transmission power of the PSCCH and 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 transmission power of the first positioning reference signal can be expressed as:

[0177]

[0178] where P PSCCH represents the transmission power of the PSCCH, and the unit of P PSCCH 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 represents the transmission power of the first positioning reference signal, with the unit of dBm.

[0179] In this example, the distribution of the REs for transmitting the second positioning reference signal is a comb structure, and the EPRE of the second positioning reference signal can be greater than the EPREs of the first positioning reference signal and the PSCCH.

[0180] In this example, adjusting the transmission power of the PSCCH based on the number of frequency-domain resource subsets included in the first frequency-domain resource and adjusting the transmission power of the first positioning reference signal based on the number of frequency-domain resource subsets included in the second frequency-domain resource can make the first positioning reference signal and the PSCCH maintain the same power spectral density, reducing the difficulty of power control.

[0181] Example 3: The transmission power of the PSCCH is related to the transmission 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.

[0182] Exemplarily, the distribution of the resource units for transmitting the PSCCH on the first frequency domain resource and the first time domain resource is not a comb structure, or in other words, the comb value corresponding to the PSCCH is 1. The distribution of the resource units for transmitting the second positioning reference signal on the third frequency domain resource and the second time domain resource is a comb structure. Additionally, the first reference signal may also be interleaved on the second frequency domain resource. The transmission power of the PSCCH is determined by the transmission power of the second positioning reference signal, the second ratio, and the comb value of the second positioning reference signal. For example, the transmission power of the PSCCH satisfies the following formula:

[0183]

[0184] where P PSCCH represents the transmission power of the PSCCH, with the unit of dBm. comb2 represents the comb value corresponding to the second positioning reference signal, M1 represents the number of frequency domain units included in the first frequency domain resource, M3 represents the number of frequency domain units included in the third frequency domain resource, and P PRS2 represents the transmission power of the second positioning reference signal, and the unit of P PRS2 is dBm.

[0185] Exemplarily, the transmission power of the first positioning reference signal can be determined by the transmission power of the second positioning reference signal and the transmission power of the PSCCH. For example, the transmission power of the first positioning reference signal is obtained by subtracting the transmission power of the PSCCH from the transmission power of the second positioning reference signal.

[0186] For example, the transmission power of the first positioning reference signal can be expressed as: P PRS1 = P PRS2 - P PSCCH . where P PRS1 represents the transmission power of the first positioning reference signal, P PRS2 represents the transmission power of the second positioning reference signal, P PSCCH represents the transmission power of the PSCCH, and the units of P PRS1 , P PRS2 and P PSCCH are all milliwatt (mW) or watt (W).

[0187] Again, for example, the transmission power of the first positioning reference signal can be expressed as: P PRS1 = 10 log 10 (P PRS2 - P PSCCH ). where P PRS1 represents the transmission power of the first positioning reference signal, P PRS2 represents the transmission power of the second positioning reference signal, PPSCCH Indicates the transmission power of the PSCCH, P PRS1 The unit of which is dBm, P PRS2 and P PSCCH The units of both are mW or W.

[0188] For another example, the transmission power of the first positioning reference signal can be expressed as: wherein, P PRS1 Indicates the transmission power of the first positioning reference signal, P PRS2 Indicates the transmission power of the second positioning reference signal, P PSCCH Indicates the transmission power of the PSCCH, P PRS1 , P PRS2 and P PSCCH The units of all are dBm.

[0189] In this example, the transmission 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, so that the energy on each RE for transmitting this PSCCH is the same as the energy on each RE for transmitting the second positioning reference signal, that is, the second positioning reference signal and the PSCCH maintain the same EPRE. As Figure 6B shown, the energy on the RE corresponding to the PSCCH is the same as the energy on RE1. When resource sensing is performed among users, the RSRP measured based on the PSCCH can reflect the signal transmission situation of the second positioning reference signal, reducing unnecessary energy conversion.

[0190] It can be understood that in this example, the EPRE of the first positioning reference signal is related to the transmission power of the PSCCH and the comb value corresponding to the first positioning reference signal. The EPRE of this first positioning reference signal can be the same as or different from the EPRE of this PSCCH.

[0191] Example 4: The transmission power of the PSCCH is related to the transmission 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 resource to the number of frequency domain resource subsets included in the third frequency domain resource.

[0192] Exemplarily, the distribution of the resource units for transmitting this PSCCH on the first frequency domain resource and the first time domain resource is not a comb structure, or in other words, the comb value corresponding to this PSCCH is 1. The distribution of the resource units for transmitting this second positioning reference signal on the third frequency domain resource and the second time domain resource is a comb structure. The transmission power of this PSCCH is determined by the transmission power of the second positioning reference signal, the fourth ratio, and the comb value of this second positioning reference signal. For example, the transmission power of this PSCCH satisfies the following formula:

[0193]

[0194] Among them, P PSCCH represents the transmission power of the PSCCH, with the unit of dBm. comb2 represents the comb value corresponding to the second positioning reference signal, M′1 represents the number of frequency-domain resource subsets included in the first frequency-domain resource, M′3 represents the number of frequency-domain resource subsets included in the third frequency-domain resource, P PRS2 represents the transmission power of the second positioning reference signal, and P PRS2 has the unit of dBm.

[0195] It can be understood that the relevant description of the transmission power of the first positioning reference signal can refer to the relevant description in Example 3, which will not be elaborated here.

[0196] In this example, the transmission power of the PSCCH can be adjusted based on the number of frequency-domain resource subsets included in the first frequency-domain resource and the number of frequency-domain resource subsets included in the third frequency-domain resource, so that the energy on each RE used to transmit this 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 among users, the RSRP measured based on the PSCCH can reflect the signal transmission situation of the second positioning reference signal, reducing unnecessary energy conversion.

[0197] Example 5: The transmission power of the PSCCH is related to the transmission power of the second positioning reference signal, the first ratio, and the comb value corresponding to the first positioning reference signal.

[0198] Exemplarily, the distribution of the resource units used to transmit this PSCCH on the first frequency-domain resource and the first time-domain resource is not a comb structure, or rather, the comb value corresponding to this PSCCH is 1. The distribution of the resource units used to transmit the first positioning reference signal on the second frequency-domain resource and the first time-domain resource is a comb structure. The transmission power of this PSCCH is determined by the transmission power of the second positioning reference signal, the first ratio, and the comb value of this first positioning reference signal. For example, the transmission power of this PSCCH satisfies the following formula:

[0199]

[0200] Among them, P PSCCH represents the transmission power of the PSCCH, with the unit of dBm. comb1 represents the comb value corresponding to the first positioning reference signal, M1 represents the number of frequency-domain units included in the first frequency-domain resource, S represents the first quantity, and P PRS2 represents the transmission power of the second positioning reference signal.

[0201] Exemplarily, the transmission power of the first positioning reference signal can be expressed as: P PRS1 = P PRS2 - P PSCCH . It can be understood that for the transmission power of this first positioning reference signal, reference can also be made to the relevant descriptions in Example 3, which will not be elaborated here.

[0202] 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 Figure 6D shown, the energy on the RE corresponding to the PSCCH is the same as the energy on RE2.

[0203] Example 6: The transmission power of the PSCCH is related to the sum of the number of frequency-domain resource subsets included in the first frequency-domain resource and the second frequency-domain resource, the number of frequency-domain resource subsets included in the first frequency-domain resource, the transmission power of the second positioning reference signal, and the comb value corresponding to the first positioning reference signal.

[0204] Exemplarily, the resource units used to transmit the PSCCH are not distributed in a comb structure on the first frequency-domain resource and the first time-domain resource, or rather, the comb value corresponding to the PSCCH is 1. The resource units used to transmit the first positioning reference signal are distributed in a comb structure on the second frequency-domain resource and the first time-domain resource. The transmission power of the PSCCH is determined by the sum of the number of frequency-domain resource subsets included in the first frequency-domain resource and the second frequency-domain resource, the number of frequency-domain resource subsets included in the first frequency-domain resource, the transmission power of the second positioning reference signal, and the comb value corresponding to the first positioning reference signal. For example, the transmission power of the PSCCH satisfies the following formula:

[0205]

[0206] where P PSCCH represents the transmission power of the PSCCH, with the unit of dBm. comb1 represents the comb value corresponding to the first positioning reference signal, 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 transmission power of the second positioning reference signal, and the unit of P PRS2 is dBm.

[0207] Exemplarily, the transmission power of the first positioning reference signal can be expressed as: P PRS1 = P PRS2 - P PSCCH . It can be understood that for the transmission power of this first positioning reference signal, reference can also be made to the relevant descriptions in Example 3, which will not be elaborated here.

[0208] In this example, the energy on each RE for transmitting the PSCCH is the same as the energy on each RE for transmitting the first positioning reference signal, that is, the first positioning reference signal and the PSCCH maintain the same EPRE.

[0209] It can be understood that the frequency domain unit in the embodiments of the present application can be a PRB, an RB, or a subcarrier.

[0210] It can be understood that the representations of the transmission power of the above-mentioned PSCCH and the transmission power of the first positioning reference signal are only some possible exemplary descriptions, and should not be construed as a limitation on the embodiments of the present application. Embodiments obtained by supplementing or reasonably modifying based on the above exemplary manner all fall within the scope of protection of the embodiments of the present application.

[0211] The apparatus provided by the embodiments of the present application will be introduced below.

[0212] The present application divides the communication apparatus into functional modules according to the above method embodiments. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. It should be noted that the division of modules in the present application is illustrative, only a logical function division, and there may be other division methods in actual implementation. The following will be combined with Figures 7 to 9 Describe the communication apparatus of the embodiments of the present application in detail.

[0213] Figure 7 is a schematic structural diagram of a communication apparatus provided by an embodiment of the present application. As Figure 7 shown, the communication apparatus 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 for data processing. For example, the transceiver unit 702 can also be referred to as a communication interface or a communication unit, etc.

[0214] In some embodiments of the present application, the communication apparatus can be used to perform the actions performed by the first communication apparatus in the above method embodiments. At this time, the communication apparatus can be the first communication apparatus or a terminal device, or the communication apparatus can be a component (such as a chip or a system, etc.) that can be configured in the first communication apparatus. The transceiver unit 702 is used to perform the operations related to the transceiver of the first communication apparatus in the above method embodiments, and the processing unit 701 is used to perform the operations related to the processing of the first communication apparatus in the above method embodiments.

[0215] Exemplarily, the processing unit 701 is used to transmit the PSCCH through the transceiver unit 702 based on the first time domain resource and the first frequency domain resource, and transmit the first positioning reference signal through the transceiver unit 702 based on the first time domain resource and the second frequency domain resource.

[0216] It can be understood that the specific descriptions of the first time-domain resource, the first frequency-domain resource, the second frequency-domain resource, the PSCCH, and the first positioning reference signal, etc., can refer to the method embodiments shown above, and will not be elaborated here.

[0217] In some other embodiments of the present application, the communication device can be used to perform the actions performed by the second communication device in the above method embodiments. At this time, the communication device can be the second communication device, or the communication device can be a component (such as a chip or a system, etc.) that is or can be configured in the second communication device. The transceiver unit 702 is used to perform the operations related to the transceiver of the second communication device in the above method embodiments, and the processing unit 701 is used to perform the operations related to the processing of the second communication device in the above method embodiments.

[0218] Exemplarily, the processing unit 701 is used to receive the PSCCH through the transceiver unit 702 based on the first time-domain resource and the first frequency-domain resource, and receive the first positioning reference signal through the transceiver unit 702 based on the first time-domain resource and the second frequency-domain resource.

[0219] It can be understood that the specific descriptions of the first time-domain resource, the first frequency-domain resource, the second frequency-domain resource, the PSCCH, and the first positioning reference signal, etc., can refer to the method embodiments shown above, and will not be elaborated here.

[0220] Optionally, the above communication device may further include a storage unit, and the storage unit can be used to store instructions and / or data. The processing unit 701 can read the instructions and / or data in the storage unit so that the communication device can implement the foregoing method embodiments.

[0221] It can be understood that the specific descriptions of the transceiver unit and the processing unit shown in the embodiments of the present application are only examples. For the specific functions or steps executed by the transceiver unit and the processing unit, reference can be made to the above method embodiments, and will not be elaborated here.

[0222] The communication device in the embodiments of the present application has been introduced above. The following introduces the possible product forms of the communication device. It should be understood that any product form that has the functions of the above Figure 7 described communication device falls within the protection scope of the embodiments of the present application. It should also be understood that the following introduction is only for example, and does not limit the product forms of the communication device in the embodiments of the present application to this.

[0223] In one possible implementation Figure 7In the communication device shown, the processing unit 701 may be one or more processors, and the transceiver unit 702 may be a transceiver, or the transceiver unit 702 may also be a sending unit and a receiving unit. The sending unit may be a transmitter, and the receiving unit may be a receiver. The sending unit and the receiving unit are integrated into one device, such as a transceiver. In the embodiments of the present application, the processor and the transceiver may be coupled, etc. The embodiments of the present application do not limit the connection manner between the processor and the transceiver. During the process of executing 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 for transmission by the transceiver. After the above information is output by the processor, other processing may be required before it reaches the transceiver. Similarly, the process of receiving information in the above method can be understood as the process of the processor receiving the input above information. When the processor receives the input information, the transceiver receives the above information and inputs it to the processor. Further, after the transceiver receives the above information, the above information may need to be processed otherwise before being received by the processor.

[0224] As Figure 8 shown, the communication device 80 includes one or more processors 820 and a transceiver 810.

[0225] In some embodiments of the present application, the communication device may be used to execute the steps or functions, etc. performed by the first communication device in the above method embodiments.

[0226] Exemplarily, the processor 820 is configured to send a PSCCH through the transceiver 810 based on a first time domain resource and a first frequency domain resource, and send a first positioning reference signal through the transceiver 810 based on the first time domain resource and a second frequency domain resource.

[0227] In other embodiments of the present application, the communication device may be used to execute the steps or functions, etc. performed by the second communication device in the above method embodiments.

[0228] Exemplarily, the processor 820 is configured to receive a PSCCH through the transceiver 810 based on a first time domain resource and a first frequency domain resource, and receive a first positioning reference signal through the transceiver 810 based on the first time domain resource and a second frequency domain resource.

[0229] It can be understood that the specific descriptions of the transceiver and the processor shown in the embodiments of the present application are only examples. For the specific functions of the transceiver and the processor or the steps performed, etc., reference may be made to the above method embodiments, which will not be elaborated here.

[0230] In each of the above embodiments, the descriptions of the first time-domain resource, the first frequency-domain resource, the second frequency-domain resource, the PSCCH, and the first positioning reference signal, etc., can also refer to the introductions in the above method embodiments, and will not be elaborated here one by one.

[0231] In Figure 8 In each implementation manner of the communication device shown, the transceiver may include a receiver and a transmitter. The receiver is used to perform the receiving function (or operation), and the transmitter is used to perform the transmitting function (or operation). And the transceiver is used to communicate with other devices / devices through a transmission medium.

[0232] 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 embodiments 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 interaction between devices, units or modules. The processor 820 may cooperate with the memory 830. The processor 820 may execute the program instructions stored in the memory 830. Optionally, at least one of the above one or more memories may be included in the processor.

[0233] In the embodiments of the present application, the specific connection medium between the transceiver 810, the processor 820, and the memory 830 is not limited. The embodiments of the present application Figure 8 show that the memory 830, the processor 820, and the transceiver 810 are connected through a bus 840. The bus is Figure 8 shown by a thick line in the figure. The connection methods between other components are only for illustrative purposes and are not limited thereto. The bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of convenience of representation, Figure 8 only one thick line is shown in the figure, but it does not mean that there is only one bus or one type of bus.

[0234] 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 devices, discrete gate or transistor logic devices, discrete hardware components, etc., and can 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 method disclosed in combination with the embodiments of the present application can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.

[0235] In the embodiments of the present application, the memory may include, but is not limited to, non-volatile memories such as a hard disk drive (HDD) or a solid-state drive (SSD), a Random Access Memory (RAM), an Erasable Programmable ROM (EPROM), a Read-Only Memory (ROM), or a Compact Disc Read-Only Memory (CD-ROM), etc. The 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 embodiments of the present application may also be a circuit or any other device capable of implementing a storage function, for storing program instructions and / or data.

[0236] Exemplarily, the processor 820 is mainly used to process communication protocols and communication data, and control the entire communication device, execute software programs, and process data of the software programs. The memory 830 is mainly used to store software programs and data. The transceiver 810 may include a control circuit and an antenna. The control circuit is mainly used for the conversion between baseband signals and radio frequency signals and the processing of radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input / output devices, such as a touch screen, a display screen, a keyboard, etc., are mainly used to receive data input by the user and output data to the user.

[0237] After 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 wirelessly transmitted, the processor 820 performs baseband processing on the data to be transmitted and then outputs a baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal outward 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.

[0238] In another implementation, the radio frequency circuit and the antenna may be provided independently of the processor performing baseband processing. For example, in a distributed scenario, the radio frequency circuit and the antenna may be independent of the communication device and arranged in a remote manner.

[0239] It can be understood that the communication device shown in the embodiments of the present application may also have more Figure 8More components, etc. are not limited in the embodiments of the present application. The methods executed by the above-mentioned processor and transceiver are only examples. For the specific steps executed by the processor and transceiver, reference may be made to the methods introduced above.

[0240] In another possible implementation, Figure 7 In the communication device shown, the processing unit 701 may be one or more logic circuits, and the transceiver unit 702 may be an input / output interface, or also referred to as a communication interface, or an interface circuit, or an interface, etc. Or the transceiver unit 702 may also be a sending unit and a receiving unit. The sending unit may be an output interface, and the receiving unit may be an input interface. The sending unit and the receiving unit are integrated into one unit, such as an input / output interface. As Figure 9 shown, Figure 9 the communication device shown includes a logic circuit 901 and an interface 902. That is, the above-mentioned processing unit 701 may be implemented by the logic circuit 901, and the transceiver unit 702 may be implemented by the interface 902. Among them, 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. Exemplarily, Figure 9 is given by taking the above communication device as a chip as an example. The chip includes a logic circuit 901 and an interface 902.

[0241] In the embodiments of the present application, the logic circuit and the interface may also be coupled to each other. For the specific connection manner between the logic circuit and the interface, the embodiments of the present application do not make a limitation.

[0242] In some embodiments of the present application, the communication device may be used to execute the steps or functions, etc. performed by the first communication device in the above method embodiments. Exemplarily, the logic circuit 901 is used to output PSCCH through the interface 902 based on the first time-domain resource and the first frequency-domain resource, and output the first positioning reference signal through the interface 902 based on the first time-domain resource and the second frequency-domain resource.

[0243] In some other embodiments of the present application, the communication device may be used to execute the steps or functions, etc. performed by the second communication device in the above method embodiments. Exemplarily, the logic circuit 901 is used to input PSCCH through the interface 902 based on the first time-domain resource and the first frequency-domain resource, and input the first positioning reference signal through the interface 902 based on the first time-domain resource and the second frequency-domain resource.

[0244] It can be understood that the specific descriptions of the logic circuit and the interface shown in the embodiments of the present application are only examples. For the specific functions or steps executed by the logic circuit and the interface, reference may be made to the above method embodiments, and details are not described here again.

[0245] In each of the foregoing embodiments, the descriptions of the first time-domain resource, the first frequency-domain resource, the second frequency-domain resource, the PSCCH, the first positioning reference signal, etc. may also refer to the introductions in the foregoing method embodiments, and will not be elaborated herein one by one.

[0246] It can be understood that the communication device shown in the embodiments of the present application may implement the method provided in the embodiments of the present application in the form of hardware, or may also implement the method provided in the embodiments of the present application in the form of software, etc. The embodiments of the present application do not make any limitations in this regard.

[0247] The embodiments of the present application further provide 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 foregoing embodiments.

[0248] In addition, the present application also provides a computer program, which is used to implement the operations and / or processes executed by the first communication device in the method provided by the present application.

[0249] The present application also provides a computer program, which is used to implement the operations and / or processes executed by the second communication device in the method provided by the present application.

[0250] The present application also provides a computer-readable storage medium, in which computer code is stored, and when the computer code runs on a computer, it causes the computer to execute the operations and / or processes executed by the first communication device in the method provided by the present application.

[0251] The present application also provides a computer-readable storage medium, in which computer code is stored, and when the computer code runs on a computer, it causes the computer to execute the operations and / or processes executed by the second communication device in the method provided by the present application.

[0252] The present application also provides a computer program product, which includes computer code or a computer program, and when the computer code or the computer program runs on a computer, it causes the operations and / or processes executed by the first communication device in the method provided by the present application to be executed.

[0253] The present application also provides a computer program product, which includes computer code or a computer program, and when the computer code or the computer program runs on a computer, it causes the operations and / or processes executed by the second communication device in the method provided by the present application to be executed.

[0254] In several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed coupling or direct coupling or communication connection between each other can be an indirect coupling or communication connection through some interfaces, devices, or units, or can also be a connection in electrical, mechanical, or other forms.

[0255] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the technical effects of the solutions provided in the embodiments of the present application.

[0256] In addition, in each embodiment of the present application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0257] If the above-mentioned 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 such an understanding, the technical solution of the present application, in essence, 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. The computer software product is stored in a readable storage medium and includes several instructions for causing 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 methods described in each embodiment of the present application. The aforementioned readable storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks, or optical discs that can store program codes.

[0258] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of changes or substitutions, which should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope 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, characterized in that, 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 the 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 to 4, 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.

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 to 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 8-10, 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, characterized in that, 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, characterized in that, 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 units 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 execute the method according to any one of claims 1-12, and the second communication device is used to execute the method according to any one of claims 13-19.

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