Communication method and communication device

Abstract

Provided are a communication method and a communication device, suitable for the fields of V2X, Internet of Vehicles, intelligent driving, and auxiliary driving, the method comprising: a first terminal device determining a first resource according to an identifier of the first terminal device, a frequency domain resource of the first resource being used to determine the identifier of the first terminal device, the first resource belongs to a first resource set corresponding to a first symbol, and a plurality of resources in the first resource set are respectively used for determining identifiers of different terminal devices; further, the first terminal device transmits the first signal through the first transmission beam in the first resource. According to the method, when a transmitting end device (namely a first terminal device) transmits a signal through a transmitting beam, the transmitting end device of the signal can be indicated through a transmitting resource (namely a first resource) of the signal, so that the accuracy of the determined transmitting beam in a sidelink communication scene can be improved; and therefore, the high-frequency communication quality of the sidelink can be improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method and a communication device. Background Art

[0002] In communication applications, the frequency range of 410MHz-7125MHz is usually called frequency range 1 (FR1), and the frequency range of 24250MHz-52600MHz is called FR2. In FR1 communication scenarios, communication signals are usually sent in an omnidirectional manner, which has the characteristics of long coverage distance, strong diffraction capability, and good coverage effect. In FR2 communication scenarios, communication signals are usually sent in a manner that aggregates the transmission energy in one direction using methods such as beamforming, which has the characteristics of small beam coverage range, ultra-large bandwidth, and less interference.

[0003] In a sidelink (SL) communication scenario, a terminal can receive signals sent by multiple terminals. Therefore, after introducing high-frequency signals (i.e., signals in FR2 communication) for communication in the SL communication scenario, how to determine the transmission beam between the transmitting device and the receiving device is an urgent problem to be solved. Summary of the invention

[0004] The embodiments of the present application provide a communication method and a communication device, which are helpful in improving the accuracy of the transmission beam determined in the SL communication scenario during the beam management process, thereby helping to improve the high-frequency communication quality of the SL.

[0005] In the first aspect, the present application provides a communication method. Taking a first terminal device executing the method as an example, the method includes: the first terminal device determines a first resource based on an identifier of the first terminal device, the frequency domain resources of the first resource are used to determine the identifier of the first terminal device, the first resource belongs to a first resource set corresponding to a first symbol, and multiple resources in the first resource set are respectively used to determine the identifiers of different terminal devices; further, the first terminal device sends a first signal through a first transmission beam in the first resource.

[0006] In the method described in the first aspect, when the transmitting end device (i.e., the first terminal device) sends a signal through a transmitting beam, the identification of the transmitting end device of the signal can be indicated by the frequency domain resources of the transmitting resource of the signal (i.e., the first resource), that is, the identification of the transmitting end device is carried by the frequency domain resources of the first resource. In the SL communication scenario, when there are multiple transmitting end devices (including the first terminal device mentioned in the present application) sending signals through different transmitting beams, the communication method can also distinguish the transmitting end devices corresponding to each transmitting beam according to the resources of each transmitting beam sending the signal, which is beneficial to improve the accuracy of the determined transmitting beam in the beam management process of the SL communication scenario, thereby helping to improve the high-frequency communication quality of SL.

[0007] In one possible implementation, a first terminal device receives response information to a first signal from a second terminal device in a second resource, a second symbol of the second resource is a symbol corresponding to the first symbol of the first resource, and a frequency domain resource of the second resource is determined based on an identifier of the first terminal device; further, the first terminal device determines that the first transmission beam is a target transmission beam based on the response information.

[0008] In the second aspect, the present application provides a communication method. Taking the second terminal device executing the method as an example, the method includes: the second terminal device receives a first signal from a first terminal device through a first resource, the frequency domain resources of the first resource are used to determine the identification of the first terminal device, the first resource belongs to a first resource set corresponding to a first symbol, and multiple resources in the first resource set are respectively used to determine the identification of different terminal devices.

[0009] In the method described in the second aspect, when there are multiple transmitting devices (including the first terminal device mentioned in the present application) sending signals through different transmitting beams in the SL communication scenario, the receiving device (i.e., the second terminal device mentioned in the present application) can distinguish the transmitting devices corresponding to each transmitting beam according to the frequency domain resources of the resources for sending signals by each transmitting beam. In the beam management process of the SL communication scenario, it is beneficial to improve the accuracy of the determined transmitting beam, thereby helping to improve the high-frequency communication quality of the SL.

[0010] In a possible implementation, the second terminal device determines a second resource, the second symbol of the second resource is a symbol corresponding to the first symbol in the first resource, and the frequency domain resource of the second resource is determined according to the identifier of the first terminal device; further, the second terminal device sends response information to the first signal to the first terminal device in the second resource. By implementing this possible implementation, the identifier of the first terminal device can be indicated by the frequency domain resource of the second resource, which is conducive to the first terminal device accurately determining the response information it needs to receive from multiple response information.

[0011] In combination with the methods described in the first aspect and the second aspect, in a possible implementation, multiple transmit beams of the first terminal device correspond to multiple symbols of the first time domain unit, the multiple transmit beams include a first transmit beam, and the multiple symbols include a first symbol.

[0012] In combination with the method described in the first aspect and the second aspect, in a possible implementation manner, the second resource belongs to a second resource set corresponding to the second symbol, and the frequency domain resources of each resource in the second resource set are determined according to the identifiers of different terminal devices. By implementing this possible implementation manner, resources on one symbol can be used by different terminal devices, which is conducive to improving resource utilization.

[0013] In combination with the methods described in the first aspect and the second aspect, in a possible implementation manner, the second symbol belongs to a second time domain unit, and the symbols in the second time domain unit correspond one-to-one to the symbols in the aforementioned first time domain unit.

[0014] In combination with the method described in the first aspect and the second aspect, in a possible implementation, the frequency domain position of the frequency domain resource of the first resource in the frequency domain resource set of the first symbol is used to determine the identity of the first terminal device. By implementing this possible implementation, the identity of the first terminal device can be determined by the position of the frequency domain resource of the first resource without the first resource carrying any information, which is conducive to saving communication resources.

[0015] In combination with the methods described in the first aspect and the second aspect, in a possible implementation manner, the frequency domain resource of the first resource is a first resource block RB or a first resource element RE.

[0016] In combination with the method described in the first aspect and the second aspect, in a possible implementation, the frequency domain resource of the first resource is a first RB, and the second RE in the first RB is used to determine the beam index of the first transmit beam. By implementing this possible implementation, the identification of the first terminal device and the beam index of the first transmit beam can be determined through the frequency domain resource of the first resource without the first resource carrying any information, which is conducive to saving communication resources.

[0017] In combination with the methods described in the first aspect and the second aspect, in a possible implementation manner, the frequency domain position of the second RE in the first RB is used to determine the beam index of the first transmit beam.

[0018] In combination with the methods described in the first aspect and the second aspect, in a possible implementation manner, the first signal is a reference signal or a reference sequence.

[0019] In combination with the method described in the first aspect and the second aspect, in a possible implementation manner, the first signal is a reference sequence, and the frequency domain resources of the first resource and the code domain resources of the first resource are used to determine the identity of the first terminal device. By implementing this possible implementation manner, the identity of the terminal device can be determined in combination with the frequency domain resources and the code domain resources, so that resources on one symbol can be used by more terminal devices, which is conducive to improving resource utilization.

[0020] In combination with the methods described in the first aspect and the second aspect, in a possible implementation manner, the code domain resources of the first resource are used to determine the beam index of the first transmit beam.

[0021] In combination with the methods described in the first aspect and the second aspect, in a possible implementation, the second resource set corresponding to the second symbol also includes a third resource, the frequency domain resource of the third resource is different from the frequency domain resource of the second resource, the third resource is used for a third terminal device to send a second signal, the second signal is different from the first signal, and the frequency domain resource of the third resource is used to determine the identity of the third terminal device. By implementing this possible implementation, the resource set corresponding to the same symbol can be used to send a beam scanning signal (i.e., send a signal for beam management, such as the first signal or the second signal in this application), and can also be used to send response information, which is conducive to improving the flexibility of resource scheduling.

[0022] In a third aspect, the present application provides a communication device, which may be a first terminal device, or a device in the first terminal device, or a device that can be used in combination with the first terminal device. The communication device may also be a chip system. The communication device may execute the method described in the first aspect. The functions of the communication device may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions. The unit or module may be software and / or hardware. The operations and beneficial effects performed by the communication device may refer to the method and beneficial effects described in the first aspect above.

[0023] In a fourth aspect, the present application provides a communication device, which may be a second terminal device, or a device in the second terminal device, or a device that can be used in combination with the second terminal device. The communication device may also be a chip system. The communication device may execute the method described in the second aspect. The functions of the communication device may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions. The unit or module may be software and / or hardware. The operations and beneficial effects performed by the communication device may refer to the methods and beneficial effects described in the second aspect above.

[0024] In a fifth aspect, the present application provides a communication device, comprising a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor is used to implement the method described in the first aspect through a logic circuit or by executing code instructions, or the processor is used to implement the method described in the second aspect through a logic circuit or by executing code instructions.

[0025] In a sixth aspect, the present application provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is executed by a communication device, the method described in the first aspect is implemented, or the method described in the second aspect is implemented.

[0026] In a seventh aspect, the present application provides a computer program product comprising instructions, which, when a communication device reads and executes the instructions, causes the communication device to execute the method as described in the first aspect, or causes the communication device to execute the method as described in the second aspect.

[0027] In an eighth aspect, the present application provides a communication system, comprising a communication device for executing the method described in the first aspect and a communication device for executing the method described in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of a communication system provided in an embodiment of the present application;

[0029] Figure 2 It is a schematic diagram of a time slot structure of an SL provided in an embodiment of the present application;

[0030] Figure 3 It is a flow chart of a communication method provided in an embodiment of the present application;

[0031] Figure 4a is a schematic diagram of a time slot structure of another SL provided in an embodiment of the present application;

[0032] Figure 4b This is a schematic diagram of a time slot structure of another SL provided in an embodiment of the present application;

[0033] Figure 5a It is a schematic diagram of a correspondence between a symbol of a first time domain unit and a transmission beam provided in an embodiment of the present application;

[0034] Figure 5b is a schematic diagram of another correspondence between a symbol of a first time domain unit and a transmission beam provided in an embodiment of the present application;

[0035] Figure 5cIt is a schematic diagram of another correspondence between a symbol of a first time domain unit and a transmission beam provided in an embodiment of the present application;

[0036] Figure 5d is a schematic diagram of a frequency domain resource set corresponding to a first symbol provided in an embodiment of the present application;

[0037] Figure 5e is a schematic diagram of another frequency domain resource set corresponding to a first symbol provided in an embodiment of the present application;

[0038] Figure 5f is a schematic diagram of a frequency domain resource set corresponding to another first symbol provided in an embodiment of the present application;

[0039] Figure 5g It is a schematic diagram of a frequency domain resource set and a code domain resource set corresponding to a first symbol provided in an embodiment of the present application;

[0040] Figure 6a is a schematic diagram of a corresponding relationship between a first time domain unit and a second time domain unit provided in an embodiment of the present application;

[0041] Figure 6b is a schematic diagram of a corresponding relationship between a first resource and a second resource provided in an embodiment of the present application;

[0042] Figure 6c is a schematic diagram of another corresponding relationship between a first resource and a second resource provided in an embodiment of the present application;

[0043] Figure 6d is a schematic diagram of a corresponding relationship between a second resource and a third resource provided in an embodiment of the present application;

[0044] Figure 7 is a structural diagram of a communication device provided in an embodiment of the present application;

[0045] Figure 8 It is a structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] The terms "first" and "second" and the like in the specification, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0047] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It should be understood that the embodiments described herein may be combined with other embodiments.

[0048] In order to facilitate a specific understanding of the embodiments of the present application, the system architecture involved in the embodiments of the present application is first introduced below.

[0049] Figure 1 FIG. 1 is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. Figure 1 As shown, the communication system includes a radio access network (RAN) 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The RAN 100 includes at least one RAN node (such as Figure 1 110a and 110b in the figure, collectively referred to as 110), may also include at least one terminal device (such as Figure 1 RAN 100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment ( Figure 1 (not shown in the figure). The terminal device 120 is connected to the RAN node 110 wirelessly, and the RAN node 110 is connected to the core network 200 wirelessly or by wire. The core network device in the core network 200 and the RAN node 110 in the RAN 100 can be independent and different physical devices, or they can be the same physical device that integrates the logical functions of the core network device and the logical functions of the RAN node. Terminal devices and terminal devices, and RAN nodes and RAN nodes can be connected to each other by wire or wirelessly. It should be noted that the RAN node 110 may also be referred to as a network device in the following text.

[0050] RAN100 may be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, and a future radio access system defined in the 3rd generation partnership project (3GPP). RAN100 may also include two or more of the above-mentioned different radio access systems. RAN100 may also be an open RAN (O-RAN).

[0051] RAN nodes, also known as radio access network equipment, RAN entities or access nodes, are used to help terminal devices access the communication system wirelessly. In one application scenario, a RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a fifth generation (5G) mobile communication system, a next generation NodeB in a sixth generation (6G) mobile communication system, or a base station in a future mobile communication system. A RAN node can be a macro base station (such as a Figure 1 110a), or a micro base station or an indoor station (such as Figure 1 110b) in the figure, it can also be a relay node or a donor node.

[0052] In another application scenario, the cooperation of multiple RAN nodes can be used to help terminal devices achieve wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU) or a radio unit (RU). The CU here completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and can also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and can also complete the functions of part of the physical layer or all of the physical layer. For the specific description of the above-mentioned protocol layers, please refer to the relevant technical specifications of 3GPP. RU can be used to implement the transceiver function of radio frequency signals. CU and DU can be two independent RAN nodes, or they can be integrated in the same RAN node, such as integrated in the baseband unit (BBU). The RU may be included in a radio frequency device, such as a remote radio unit (RRU) or an active antenna unit (AAU). The CU may be further divided into two types of RAN nodes: CU-control plane and CU-user plane.

[0053] In different systems, RAN nodes may have different names. For example, in an O-RAN system, CU may be called an open CU (open CU, O-CU), DU may be called an open DU (open DU, O-DU), and RU may be called an open RU (open RU, O-RU). The RAN node in the embodiment of the present application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. For example, the RAN node may be a server loaded with a corresponding software module. The embodiments of the present application do not limit the specific technology and specific device form adopted by the RAN node. For the convenience of description, the following description takes a base station as an example of a RAN node.

[0054] The terminal device is a device with wireless transceiver function, which can send signals to the base station or receive signals from the base station. The terminal device can also be called terminal equipment, user equipment (UE), mobile station, mobile terminal, etc. The terminal device can be widely used in various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, an airplane, a ship, a robot, a robotic arm, a smart home device, etc. The terminal device can also be a vehicle device, such as a whole vehicle device, a vehicle-mounted module, a vehicle-mounted chip, an onboard unit (OBU) or a telematics box (T-BOX), etc. The terminal device may also be a road side unit (RSU), or a chip, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0055] Base stations and terminal devices can be fixed or movable. Base stations and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on airplanes, balloons, and artificial satellites. The embodiments of the present application do not limit the application scenarios of base stations and terminal devices.

[0056] The roles of the base station and the terminal device may be relative, for example, Figure 1The helicopter or drone 120i in the figure can be configured as a mobile base station. For the terminal devices 120j that access the wireless access network 100 through 120i, the terminal device 120i is a base station; but for the base station 110a, 120i is a terminal device, that is, 110a and 120i communicate through the wireless air interface protocol. Of course, 110a and 120i can also communicate through the interface protocol between base stations. In this case, relative to 110a, 120i is also a base station. Therefore, base stations and terminal devices can be collectively referred to as communication devices. Figure 1 110a and 110b in the figure may be referred to as communication devices having base station functions. Figure 1 120a-120j in the figure can be called communication devices with terminal device functions.

[0057] Base stations and terminal devices, base stations and base stations, and terminal devices and terminal devices may communicate through authorized spectrum, unauthorized spectrum, or both; may communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0058] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem including the base station function. The control subsystem including the base station function here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, smart city, etc. The functions of the terminal device may also be performed by a module (such as a chip or a modem) in the terminal device, or by a device including the terminal device function.

[0059] In order to facilitate understanding of the relevant contents of the embodiments of the present application, some of the terms involved in the embodiments of the present application are explained below. This part is only for ease of understanding and cannot be regarded as a disclosure or specific limitation of the technical solution of the present application.

[0060] 1. Sidelink (SL)

[0061] When terminal device A and terminal device B communicate directly through the PC5 interface, the link of direct communication between terminal device A and terminal device B can be understood as SL. The application scenarios of SL communication technology include but are not limited to device to device (D2D) communication scenarios or vehicle-to-everything (V2X) communication scenarios.

[0062] 2. SL resource pool

[0063] The resources for SL communication between terminal device A and terminal device B are configured based on the SL resource pool, which may refer to a collection of time domain resources and frequency domain resources for SL communication. In one possible implementation, the SL resource pool may also include code domain resources. It should be noted that the time domain resources mentioned in this application may be represented by frames, sub-frames, slots or symbols, etc.; wherein a frame may include multiple sub-frames, a sub-frame may include multiple slots, and a slot may include multiple symbols, for example, a slot may include 14 symbols. The frequency domain resources mentioned in this application may be represented by sub-channels, resource block groups (RBG), physical resource blocks (PRB) or sub-carriers (SC); wherein a sub-channel may include multiple PRBs continuous in the frequency domain, a PRB may include multiple sub-carriers, and a PRB may also be referred to as a resource block (RB). Usually a sub-carrier on a symbol is also called a resource element (RE). The different code domain resources mentioned in this application can be distinguished by cyclic shift (CS).

[0064] The SL resource pool is usually obtained based on the SL resource pool configuration information and / or the SL bandwidth part (BWP) configuration information. Specifically, when the terminal device is under network coverage, the terminal device can obtain the SL resource pool configuration information and / or the SL bandwidth part (BWP) configuration information by receiving the system information block (SIB) of the network equipment, the cell-level (cell-specific) radio resource control (RRC) signaling or the terminal device user level (UE-specific) RRC signaling; when the terminal device is not under network coverage, the terminal device can also use the pre-configured SL resource pool configuration information or SL BWP configuration information. Among them, the SL resource pool configuration information includes resource pool resource information, and the resource pool resource information is used to indicate the SL resource pool; the SLBWP configuration information may include SL resource pool information, which is used to configure the number of resource pools included in the BWP. The SL BWP configuration information may include SL bandwidth information, which is used to indicate the bandwidth size for SL communication, for example, indicating that the SL bandwidth is 20 megahertz (MHz).

[0065] In order to facilitate the understanding of the technical solution of the present application, the present application also provides a schematic diagram of the time slot structure of SL. Figure 2 As shown, in SL communication, a time slot may include 14 symbols, which may be used to transmit automatic gain control (AGC), physical sidelink shared channel (PSSCH), physical sidelink control channel (PSCCH), demodulation reference signal (DMRS), physical sidelink feedback channel (PSFCH), etc. Among them, PSCCH may exist in each subchannel in each time slot. For example, the time domain starting position of a PSCCH is the second symbol used for SL transmission in each time slot, and its length is 2 or 3 symbols (determined by the resource pool configuration information); the starting position of the frequency domain position of a PSCCH is the minimum PRB index of each subchannel, and the length is at least 10 PRBs (determined by the resource pool configuration information) but not more than the size of the subchannel.

[0066] 3. Beam

[0067] Beams and beam pair links (BPLs) are introduced into communication systems. Beams are a type of communication resource. Beams can be divided into transmit beams and receive beams. The technology for forming beams can be beamforming technology or other technical means, wherein the beamforming technology can specifically be digital beamforming technology, analog beamforming technology, or hybrid digital / analog beamforming technology. Beamforming includes transmit beamforming and receive beamforming.

[0068] Transmit beam: The transmitting end device sends a signal with a certain beamforming weight, so that the transmitted signal forms a beam with spatial directivity. In the uplink direction, the transmitting end device can be a terminal; in the downlink direction, the transmitting end device can be a network device. In this application, the transmit beam can also be called a transmission beam. The transmit beam can also be understood as the distribution of signal strength formed in different directions in space after the signal is transmitted by the antenna.

[0069] Receive beam: The receiving device receives the signal with a certain beamforming weight, so that the received signal forms a beam with spatial directivity. In the uplink direction, the receiving device can be a network device; in the downlink direction, the receiving device can be a terminal. The receive beam can also be understood as the signal strength distribution of the wireless signal received from the antenna in different directions in space.

[0070] Transmit beamforming: When a transmitting device with an antenna array sends a signal, a specific amplitude and phase are set on each antenna element of the antenna array so that the transmitted signal has a certain spatial directivity, that is, the signal power is high in some directions and low in some directions. The direction with the highest signal power is the direction of the transmit beam. The antenna array includes multiple antenna elements, and the specific amplitude and phase attached are the beamforming weights.

[0071] Receive beamforming: When a receiving device with an antenna array receives a signal, a specific amplitude and phase are set on each antenna element of the antenna array so that the power gain of the received signal has directionality, that is, the power gain is high when receiving signals in certain directions, and low when receiving signals in other directions. The direction with the highest power gain when receiving a signal is the direction of the receive beam. The antenna array includes multiple antenna elements, and the specific amplitude and phase added are the beamforming weights.

[0072] Sending a signal using (or through) a certain transmit beam: Sending a signal using certain beamforming weights.

[0073] Receive signal using receive beam: Receive signal using a certain beamforming weight.

[0074] Different beams can be considered as different resources. The same information or different information can be sent using (or through) different beams. Beam pairs are based on the concept of beams. A beam pair usually includes a transmit beam of a transmitting device and a receive beam of a receiving device. It should be noted that, unless otherwise specified, the transmit beams in the following text refer to the transmit beams of network devices, and the receive beams refer to the receive beams of terminals.

[0075] In a communication system such as a 5G new radio (NR) system, both network equipment and terminals can generate one or more transmit beams and one or more receive beams. Before transmitting data, beam alignment is required.

[0076] The embodiment of beam in the protocol can be a spatial filter or spatial parameters. The beam used to send signals can be called a transmission beam (Tx beam), which can be called a spatial transmission filter or a spatial transmission parameter; the beam used to receive signals can be called a reception beam (Rx beam), which can be called a spatial reception filter or a spatial reception parameter.

[0077] It should be understood that the embodiment of beam in the above-listed protocols is only an example and should not constitute any limitation to the present application. The present application does not exclude the possibility of defining other terms in other protocols to express the same or similar meanings.

[0078] In addition, the beam may be a wide beam, a narrow beam, or other types of beams. The same information or different information may be sent through different beams.

[0079] Optionally, multiple beams with the same or similar communication characteristics are regarded as one beam. One beam may include one or more antenna ports for transmitting data, control signaling or detection signals, etc. One or more antenna ports forming a beam may also be regarded as an antenna port set.

[0080] 4. Beam management

[0081] When a wireless signal in FR2 (or high-frequency wireless signal) is used for communication between a transmitting device and a receiving device, beam management can be used between the transmitting device and the receiving device to achieve alignment of the transmitting beam of the transmitting device and the receiving beam of the receiving device (or to understand that the direction of the transmitting beam and the direction of the receiving beam are aligned). It can be understood that when the transmitting beam of the transmitting device and the receiving beam of the receiving device are aligned, the transmitting device and the receiving device can have better communication quality. Beam management can be understood as the process of determining (or adjusting) the transmitting beam and determining (or adjusting) the receiving beam.

[0082] According to the working status, beam management can be divided into three states. The operations of each state are summarized as follows:

[0083] P-1: The receiving end device measures the transmission beam set of the transmitting end device, and selects the transmission beam of the transmitting end device and the receiving beam of the receiving end device;

[0084] P-2: Based on P-1, the receiving device measures a smaller set of transmit beams of the transmitting device to improve the transmit beams of the transmitting device;

[0085] P-3: The receiving device uses different receiving beams to measure the transmitting beam of the same transmitting device to improve the receiving beam of the receiving device itself.

[0086] In the SL communication scenario, there is a situation where one receiving device can receive signals from multiple transmitting devices. If communication is performed based on wireless signals in the FR2 frequency band in the SL communication scenario (hereinafter collectively referred to as high-frequency communication), during the beam management process between the receiving device A and the transmitting device B, if it is impossible to distinguish the transmission beam of the transmitting device B from the transmission beams of other transmitting devices, it may cause the beam management between the receiving device A and the transmitting device B to fail, resulting in the problem that the receiving device A and the transmitting device B cannot communicate.

[0087] In order to distinguish the transmission beam of the transmitting end device in the SL communication scenario and improve the accuracy of determining the target transmission beam during the beam management process, the present application provides a communication method. It should be stated that the present application only uses the method provided by the present application in the beam management process (or understood as initial beam alignment) as an example for illustration, and should not be regarded as a specific limitation on the application scenario of the present application; the method provided by the present application can also be applied to beam maintenance scenarios or beam failure recovery scenarios.

[0088] The communication method and communication device provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings. Figure 3 is a flow chart of a communication method provided in an embodiment of the present application. Figure 3As shown, the communication method includes the following steps S301 to S302: Figure 3 The method execution subject shown is described by taking a sending end device (i.e., the first terminal device mentioned in the present application) and a receiving end device (i.e., the second terminal device mentioned in the present application) as an example. Among them:

[0089] S301. A first terminal device determines a first resource according to an identifier of the first terminal device. A frequency domain resource of the first resource is used to determine the identifier of the first terminal device. The first resource belongs to a first resource set corresponding to a first symbol. Multiple resources in the first resource set are respectively used to determine identifiers of different terminal devices.

[0090] That is to say, the first terminal device determines the first resource from the first resource set corresponding to the first symbol according to the identification of the first terminal device. The first resource can be understood as a sending resource for the first terminal device to send a first signal on the first symbol. The identification of the terminal device (i.e., the first terminal device) using the first resource can be determined based on the frequency domain resources of the first resource.

[0091] It should be noted that the frequency domain resources of the first resource are used to determine the identification of the first terminal device. It can be understood that according to the frequency domain resources of the first resource, it can be determined that the first resource is used for beam management by the first terminal device, or it can be understood that according to the frequency domain resources of the first resource, it can be determined that the first resource is used for the first terminal device to send a signal for beam management (i.e., the first signal hereinbelow), or it can be understood that according to the identification of the first terminal device, the frequency domain resources of the first resource can be determined (i.e., there is a mapping relationship between the identification of the first terminal device and the frequency domain resources of the first resource).

[0092] It should also be noted that the identification of the terminal device mentioned in the present application includes but is not limited to any of the following: the source identification (source ID) of the terminal device in SL communication, the destination identification (destination ID) of the terminal device in SL communication, the synchronization signal identification (synchronization signal identifier, SSID) of the terminal device in SL communication, the identification obtained by intercepting the source ID / destination ID / SSID, the identification obtained according to the source ID / destination ID / SSID mapping, or the identification obtained by taking the modulus of the frequency domain resource value according to the source ID / destination ID / SSID, etc.; the present application does not specifically limit the form of expression of the identification of the terminal device.

[0093] It should also be noted that the resources for beam management mentioned in the present application (such as the first resource, the second resource described later, the resources in the first resource set and the resources in the second resource set, etc.) may be resources in the aforementioned SL resource pool, or may not be resources in the aforementioned SL resource pool. It can be understood that when the resources for beam management mentioned in the present application are not resources in the aforementioned SL resource pool, the resources for beam management may be resources for the beam management process for SL communication scenarios predefined by the communication protocol, or a set of resources preconfigured by the network device specifically for beam management. When the resources for beam management mentioned in the present application are resources in the aforementioned SL resource pool, the time domain resources of the resources for beam management do not overlap with the time domain resources corresponding to the PSCCH in the SL resource pool; that is, in this case, the time slot structure diagram of the SL can be as follows: Figure 4a As shown, the symbol used to carry the PSCCH (or understood as the resource set corresponding to the symbol) is not used for the terminal device (including the first terminal device mentioned in this application) to perform beam management, and one or more symbols in other symbols (i.e., symbols other than the symbol used to carry the PSCCH) are used for the terminal device to perform beam management. Alternatively, when the resources used for beam management mentioned in this application are resources in the aforementioned SL resource pool, such as Figure 4b As shown, the time domain resources of the resources used for beam management of the terminal device can be one or more of the last three symbols in a time slot, and the time domain resources of the resources used for beam management of the terminal device can overlap with the time domain resources corresponding to the PSFCH in the SL resource pool, or can not overlap. When the time domain resources of the resources used for beam management overlap with the time domain resources corresponding to the PSFCH in the SL resource pool, the frequency domain resources of the resources used for beam management are different from the frequency domain resources of the PSFCH (or understood to be orthogonal).

[0094] In a possible implementation, multiple transmission beams of the first terminal device (including the first transmission beam mentioned in the present application) correspond to multiple symbols of the first time domain unit (including the first symbol mentioned in the present application). It can be understood that in the process of beam management, the first terminal device sends the first signal to the second terminal device through different transmission beams on different symbols of the multiple symbols of the first time domain unit. For example, see Figure 5a , is a schematic diagram of a correspondence between a symbol of a first time domain unit and a transmission beam provided in an embodiment of the present application. Figure 5aIn the time domain, the first time domain unit is time slot T1, and the first terminal device sends the first signal to the receiving end device through transmission beam 1 to transmission beam 4 at symbol 1, symbol 4, symbol 7 and symbol 10 in time slot T1, respectively; that is, symbol 1 corresponds to transmission beam 1 (i.e., the first signal is sent through transmission beam 1 at symbol 1), symbol 4 corresponds to transmission beam 2 (i.e., the first signal is sent through transmission beam 2 at symbol 4), symbol 7 corresponds to transmission beam 3 (i.e., the first signal is sent through transmission beam 3 at symbol 7), and symbol 10 corresponds to transmission beam 4 (i.e., the first signal is sent through transmission beam 4 at symbol 10).

[0095] It should be noted that in Figure 5a In this application, only the first time domain unit is explained as a time slot as an example. The first time domain unit can also be multiple continuous time slots. It can be understood that when the first time domain unit is two continuous time slots, if every three symbols (i.e., an AGC symbol, a symbol of the first signal and an interval (gap) symbol) correspond to a transmission beam, then the first time domain unit can correspond to 9 transmission beams; when the first time domain unit is three continuous time slots, if every three symbols (i.e., an AGC symbol, a symbol of the first signal and an interval (gap) symbol) correspond to a transmission beam, then the first time domain unit can correspond to 14 transmission beams, and so on.

[0096] It should also be noted that the examples and diagrams of the present application are only based on an example of one transmit beam corresponding to three symbols (i.e., each first signal symbol has an AGC symbol and a gap symbol before and after), which should not be regarded as a specific limitation of the present application. Figure 5b In the example, one transmission beam may also correspond to two symbols (ie, there is only one gap symbol between the symbols of two adjacent first signals). Figure 5b The number of gap symbols between two adjacent first signal symbols may also be multiple, which is not limited in the present application.

[0097] It should also be noted that in the diagram of the present application, each first signal (or response information) occupies one symbol as an example, and this should not be regarded as a specific limitation of the present application. In the present application, the first signal (or response information) may also occupy multiple symbols, for example, Figure 5c In the example, a first signal may occupy two symbols. It can be understood that the more symbols the first signal occupies, the more terminal devices are determined by the resource set corresponding to the first symbol.

[0098] In the process of beam management, the first terminal device determines the resources for sending the first signal on the resource set of the symbol corresponding to each transmit beam. The first signal is a reference signal or a reference sequence. When the first signal is a reference signal, the first signal includes but is not limited to any one of a channel state information reference signal (CSI-RS), a DMRS or a phase tracking reference signal (PT-RS); when the first signal is a reference sequence, the first signal includes but is not limited to any one of a ZC sequence (also known as a Zadoff–Chu sequence), an m sequence or a gold sequence. It should be noted that if there is no special description of the first signal in the following text, the first signal can be either a reference signal or a reference sequence, and the present application does not make specific restrictions on this. For the sake of ease of understanding and description, the following is a detailed description of the first resource for sending the first signal determined by the first terminal device on the first resource set of the first symbol corresponding to the first transmit beam as an example.

[0099] In a possible implementation, the first terminal device determines the position of the first frequency domain resource corresponding to the identifier of the first terminal device from the first frequency domain resource set of the first symbol based on its own identifier, and the first resource can be determined based on the first frequency domain resource and the first symbol. It can be understood that the frequency domain position of the frequency domain resource of the first resource determined by the first terminal device in the frequency domain resource set of the first symbol is used to determine the identifier of the first terminal device. The following is explained by taking the frequency domain resource of the first resource (i.e., the first frequency domain resource) as the first RB or the first RE as an example.

[0100] In Example 1, Figure 5d The frequency domain resource set corresponding to the first symbol includes N RB It can be understood that the resources are determined with RB as the granularity, and the first resource set corresponding to the first symbol includes N RB resources, the N RB Different resources in the N resources are used to determine the identification of different terminal devices. RB resources can determine N BBThe identifier of a terminal device. If terminal device 1 determines that the identifier of terminal device 1 is 1 (i.e., UE ID=1) based on its own source ID / destination ID / SSID, etc., terminal device 1 will determine the frequency domain resources (e.g., RB0) that have a corresponding relationship with the UE ID=1 as the frequency domain resources of the first resource of terminal device 1. If terminal device 2 determines that the identifier of terminal device 2 is 2 (i.e., UE ID=2) based on its own source ID / destination ID / SSID, etc., terminal device 2 will determine the frequency domain resources (e.g., RB1) that have a corresponding relationship with the UE ID=2 as the frequency domain resources of the first resource of terminal device 2.

[0101] It should be stated that in the examples of the present application, the granularity of the frequency domain resources used to distinguish the terminal device identification, the granularity of the code domain resources used to distinguish the terminal device identification, the granularity of the frequency domain resources used to distinguish the beam index, and the granularity of the code domain resources used to distinguish the beam index are all exemplary, and the present application does not make specific limitations on this. The full text is as such.

[0102] In a possible implementation of Example 1, when the frequency domain position of the first RB of the first resource in the frequency domain resource set corresponding to the first symbol is used to determine the identity of the first terminal device, the second RE in the first RB can also indicate the beam index of the first transmission beam of the first signal sent by the first terminal device in the first resource. For example, the transmission beams (or transmission beam directions) of different terminal devices sending the first signal on the same symbol may be different. Figure 5e As shown, the frequency domain resource set corresponding to the first symbol includes N RB RBs, each RB includes (or is understood to correspond to) 12 REs, the identifier of the terminal device is indicated (or is understood to be determined) with RB as the granularity, and the beam index of the transmit beam of the terminal device on the first symbol is indicated (or is understood to be determined) with 2 REs as the granularity. When terminal device 1 sends a first signal on the first symbol by transmitting beam 1, terminal device 1 can determine that the frequency domain resource of the first resource of terminal device 1 is RB0 according to its own identifier, and determine to send the first signal through RE0~RE1 in RB0 (that is, the second RE corresponding to terminal device 1) according to the beam index of transmit beam 1. When terminal device 2 sends a first signal on the first symbol by transmitting beam 2, terminal device 2 can determine that the frequency domain resource of the first resource of terminal device 2 is RB1 according to its own identifier, and determine to send the first signal through RE2~RE3 in RB1 (that is, the second RE corresponding to terminal device 2) according to the beam index of transmit beam 2.

[0103] In Example 2, Figure 5f The frequency domain resource set corresponding to the first symbol includes NRB RBs, each RB includes (or is understood to correspond to) 12 REs. It can be understood that if the resource is determined with 2 REs as the granularity, the first resource set corresponding to the first symbol may include N RB × 6 resources, the N RB Different resources among the N ×6 resources are used to determine the identification of different terminal devices. RB ×6 resources can determine N RB ×6 terminal device identifiers. If terminal device 1 determines that the identifier of terminal device 1 is UE ID=1 based on its own source ID / destination ID / SSID, etc., terminal device 1 determines the frequency domain resources corresponding to UE ID=1 (e.g., RE0~RE1 in RB0) as the frequency domain resources for terminal device 1 to send the first signal on the first symbol. If terminal device 2 determines that the identifier of terminal device 2 is UE ID=2 based on its own source ID / destination ID / SSID, etc., terminal device 2 determines the frequency domain resources corresponding to UE ID=1 (e.g., RE2~RE3 in RB0) as the frequency domain resources for terminal device 2 to send the first signal on the first symbol.

[0104] In a possible implementation, when the first signal is a reference sequence, the frequency domain resource of the first resource and the code domain resource of the first resource determined by the first terminal device are used to determine the identity of the first terminal device. In other words, different terminal devices correspond to different code domain resources (or are understood to correspond to different cyclic shifts), and the first terminal device can determine the first resource in the first resource set corresponding to the first symbol according to its own identity, and the frequency domain resource and the code domain resource of the first resource are both determined by the identity of the first terminal device.

[0105] In Example 3, Figure 5g The frequency domain resource set corresponding to the first symbol includes N RB RBs, the number of code domain resources (or cyclic shifts) on each RB is N cs It can be understood that different terminal devices among the multiple terminal devices correspond to different code domain resources, and then the resources for each terminal device to send the first signal can be jointly determined based on 1 RB and 1 code domain resource as the granularity. The first resource set corresponding to the first symbol includes N RB ×N cs resources, the N RB ×N cs Different resources in the N resources are used to determine the identification of different terminal devices. RB ×N cs resources can determine N RB ×N CsThe identifier of a terminal device. When terminal device 1 sends a first signal on a first symbol, terminal device 1 can determine the identifier of terminal device 1 as UE ID=1 based on its own identifier; further, terminal device 1 determines the frequency domain resources and code domain resources corresponding to UE ID=1 (for example, code domain resource 1 on RB0, or understood as the first cyclic shift on RB0) as the frequency domain resources and code domain resources for terminal device 1 to send the first signal on the first symbol. When terminal device 2 sends a first signal on a first symbol, terminal device 2 can determine the identifier of terminal device 2 as UE ID=2 based on its own identifier; further, terminal device 2 determines the frequency domain resources and code domain resources corresponding to UE ID=2 (for example, code domain resource 2 on RB0, or understood as the second cyclic shift on RB0) as the frequency domain resources and code domain resources for terminal device 2 to send the first signal on the first symbol.

[0106] In Example 4, the frequency domain resource set corresponding to the first symbol includes N RB RBs, the number of code domain resources (or cyclic shifts) on each RB is N cs In this case, the frequency domain position of the first RB of the first resource in the frequency domain resource set corresponding to the first symbol can also be used to determine the identification of the first terminal device; and the code domain resource of the first resource can be used to determine the beam index of the first transmit beam. Exemplarily, the transmit beams (or transmit beam directions) of different terminal devices sending the first signal on the same symbol can be different. Figure 5g As shown, the frequency domain resource set corresponding to the first symbol includes N RB RBs, the number of code domain resources (or cyclic shifts) on each RB is N cs , the identifier of the terminal device is indicated (or understood as determined) with RB as the granularity, and the beam index of the transmit beam of the terminal device on the first symbol is indicated (or understood as determined) with 1 code domain resource (or cyclic shift) as the granularity. Terminal device 1 sends a first signal by transmitting beam 1 on the first symbol. Terminal device 1 can determine that the frequency domain resource of the first resource of terminal device 1 is RB0 according to its own identifier, and determine to send the first signal through code domain resource 1 in RB0 (or understood as through the first cyclic shift) according to the beam index of transmit beam 1. Terminal device 2 sends a first signal by transmitting beam 2 on the first symbol. Terminal device 2 can determine that the frequency domain resource of the first resource of terminal device 2 is RB1 according to its own identifier, and determine to send the first signal through code domain resource 2 in RB0 (or understood as through the second cyclic shift) according to the beam index of transmit beam 2.

[0107] S302. The first terminal device sends a first signal using a first transmission beam in a first resource.

[0108] After determining the first resource from the first resource set corresponding to the first symbol, the first terminal device transmits the first signal on the first resource through the first transmit beam. Correspondingly, the second terminal device receives the first signal from the first terminal device through the first resource, and determines the identification of the first terminal device according to the frequency domain resource of the first resource.

[0109] In a possible implementation, after the second terminal device receives the first signal from the first terminal device through the first resource, the second terminal device determines the second resource according to the identifier of the first terminal device. The second symbol of the second resource is the corresponding symbol of the first symbol in the first resource, and the frequency domain resource of the second resource is determined according to the identifier of the first terminal device. After determining the second resource, the second terminal device sends a response message to the first signal to the first terminal device in the second resource, and the response message is used to indicate that the reference signal receiving power (RSRP) of the first transmission beam is greater than or equal to the first threshold value, and / or the RSRP of the first transmission beam is the maximum value among the RSRPs of multiple transmission beams of the first terminal device. Further, the first terminal device determines that the first transmission beam is the target transmission beam according to the response information, that is, the first transmission beam is determined as the transmission beam for the subsequent first terminal device to send signals to the second terminal device.

[0110] Among them, the first threshold is a preset threshold, and the first threshold can be predefined, configured, or preconfigured. It is understandable that "predefined" can be understood as standard definition, which does not require other equipment configuration (and the network equipment or other terminal equipment cannot be changed), and is information recorded / written in advance in the hardware and / or software of the terminal device itself. "Configuration" is divided into network equipment configuration and terminal equipment configuration. If it is a network equipment configuration, it can be changed through SIB or RRC signaling; if it is a terminal equipment configuration, it can be changed according to PC5-RRC signaling. "Preconfiguration" can be understood as information recorded / written in advance in the hardware and / or software of the UE itself, which is determined by the manufacturer of the equipment and can be changed through software or hardware. The response information can be understood as the reporting information of the second terminal device on the beam that sends the first signal, or as indication information to the first terminal device (used to indicate which transmission beam the first terminal device uses), or as feedback information on the beam scanning of the first terminal device (used to feedback which transmission beam is available).

[0111] In one example, the second terminal device receives the first signal from the first terminal device through symbol 1, symbol 4, symbol 7, and symbol 10, respectively, wherein the RSRP of the first signal received on symbol 1 is greater than or equal to the first threshold, the RSRP of the first signal received on symbol 4 is greater than or equal to the first threshold, the RSRP of the first signal received on symbol 7 is less than the first threshold, and the RSRP of the first signal received on symbol 10 is less than the first threshold; in this case, the second terminal device sends response information on the symbol corresponding to symbol 1; sends response information on the symbol corresponding to symbol 4; does not send response information on the symbol corresponding to symbol 7; and does not send response information on the symbol corresponding to symbol 10. Further, after the first terminal device receives the response information, the first terminal device determines the transmission beam corresponding to symbol 1 or the transmission beam corresponding to symbol 4 as the target transmission beam.

[0112] In another example, the second terminal device receives the first signal from the first terminal device through symbol 1, symbol 4, symbol 7 and symbol 10 respectively, wherein the RSRP of the first signal received on symbol 1 is greater than or equal to the first threshold, the RSRP of the first signal received on symbol 4 is greater than or equal to the first threshold, the RSRP of the first signal received on symbol 7 is less than the first threshold, the RSRP of the first signal received on symbol 10 is less than the first threshold, and the RSRP of the first signal received on symbol 1 is greater than the RSRP of the first signal received on symbol 4; in this case, the second terminal device can send response information only on the symbol corresponding to symbol 1. Further, the first terminal device determines the transmission beam corresponding to symbol 1 as the target transmission beam according to the received response information.

[0113] It should be noted that the second symbol of the second resource is the corresponding symbol of the first symbol in the first resource. It can be understood that the symbol of the resource for the second terminal device to send response information (for example, the second symbol of the second resource) has a corresponding relationship with the symbol of the resource for the first terminal device to send the first signal (for example, the first symbol of the first resource), or that the second symbol is a response symbol corresponding to the first symbol, or that the second symbol is used to transmit response information corresponding to the transmission content of the first symbol (that is, the first signal).

[0114] In one possible implementation, the second symbol belongs to the second time domain unit, and the symbols in the second time domain unit correspond one-to-one with the symbols in the first time domain unit. It can be understood that, in the process of beam management, the multiple transmission beams of the first terminal device correspond to the multiple symbols of the first time domain unit; the first terminal device sends the first signal through different transmission beams on different symbols of the multiple symbols; further, after the second terminal device receives the first signal on the multiple symbols of the first time domain unit, it can send response information for the first signal sent by each beam on the multiple symbols of the second time domain unit. Among them, the multiple symbols of the first time domain unit correspond one-to-one with the multiple symbols of the second time domain unit, that is, after sending the first signal on a symbol of the first time domain unit, the response information for the first signal can be sent on the corresponding symbol of the symbol of the second time domain unit. It should be noted that the time domain unit mentioned in the present application (including the first time domain unit and the subsequent second time domain unit) can be a time slot or a combination of multiple symbols. The present application does not make specific limitations on this. For the sake of convenience of description, the time domain unit is taken as a time slot as an example to illustrate this scheme, which should not be regarded as a specific limitation of the present application.

[0115] For example, see Figure 6a , which is a schematic diagram of a corresponding relationship between a first time domain unit and a second time domain unit provided in an embodiment of the present application. Figure 6a In the example, the first terminal device transmits a first signal to the second terminal device at symbols 1, 4, 7 and 10 in time slot T1 (i.e., the first time domain unit) through transmission beams 1 to 4, respectively, and the second terminal device transmits response information to the first terminal device at symbols 1, 4, 7 and 10 in time slot R1 (i.e., the second time domain unit). Symbol 1 of time slot R1 corresponds to symbol 1 of time slot T1 (or symbol 1 of time slot R1 is the corresponding symbol of symbol 1 of time slot T1), that is, the response information sent at symbol 1 of time slot R1 is the response information for the first signal sent at symbol 1 of time slot T1 (i.e., the first signal sent by transmission beam 1); symbol 4 of time slot R1 corresponds to symbol 4 of time slot T1, that is, the response information sent at symbol 4 of time slot R1 is the response information for the first signal sent at symbol 4 of time slot T1 (i.e., the first signal sent by transmission beam 2). the first signal sent by transmitting beam 3); the symbol 10 of time slot R1 corresponds to the symbol 10 of time slot T1, that is, the response information sent at the symbol 10 of time slot R1 is the response information for the first signal sent by symbol 7 of time slot T1 (that is, the first signal sent by transmitting beam 4).

[0116] In another possible implementation, the second resource belongs to a second resource set corresponding to the second symbol, and the frequency domain resources of each resource in the second resource set are determined according to the identification of different terminal devices. It can be understood that, in the process of beam management, when the first signal is sent on the first symbol, the frequency domain resources of different resources in the first resource set corresponding to the first symbol are respectively used to determine the identification of different transmitting end devices; when the response information for the first signal is sent on the second symbol, the frequency domain resources of different resources in the second resource set corresponding to the second symbol are respectively used to determine the identification of different transmitting end devices. The first terminal device determines (or is understood to indicate) the identification of the first terminal device by the position of the frequency domain resource of the first resource in the frequency domain resource set corresponding to the first symbol; when the second terminal device sends the response information for the first signal on the second symbol corresponding to the first symbol, it determines (or is understood to indicate) the identification of the first terminal device by the position of the frequency domain resource of the second resource in the frequency domain resource set corresponding to the second symbol.

[0117] That is, in one possibility, the frequency domain position of the frequency domain resource of the second resource in the frequency domain resource set of the second symbol is the same as the frequency domain position of the frequency domain resource of the first resource in the frequency domain resource set of the first symbol; and / or, the code domain resource of the second resource is also the same as the code domain resource of the first resource. For example, see Figure 6b FIG. 1 is a schematic diagram of a corresponding relationship between a first resource and a second resource provided in an embodiment of the present application. Figure 6b In the example, terminal device 1 sends a first signal to terminal device 3 on resource 1 corresponding to symbol 1 in time slot T1, the frequency domain resource of resource 1 is RB0, and the position of RB0 in the frequency domain resource set corresponding to symbol 1 is used to determine the identity of terminal device 1; terminal device 2 sends a first signal to terminal device 3 on resource 2 corresponding to symbol 1 in time slot T1, the frequency domain resource of resource 2 is RB1, and the position of RB1 in the frequency domain resource set corresponding to symbol 1 is used to determine the identity of terminal device 2. After terminal device 3 receives the first signal from terminal device 1 and terminal device 2 on symbol 1 in time slot T1, terminal device 3 sends response information for the first signal to terminal device 1 and terminal device 2 respectively on symbol 1 in time slot R1 corresponding to symbol 1 in time slot T1. Among them, response information is sent to terminal device 1 on resource 3 corresponding to symbol 1 of time slot R1, and the position of frequency domain resource RB0 of resource 3 in the frequency domain resource set corresponding to symbol 1 is used to determine the identification of terminal device 1 (or understood as being determined based on the identification of terminal device 1); response information is sent to terminal device 1 on resource 4 corresponding to symbol 1 of time slot R1, and the position of frequency domain resource RB1 of resource 4 in the frequency domain resource set corresponding to symbol 1 is used to determine the identification of terminal device 2 (or understood as being determined based on the identification of terminal device 2).

[0118] In another possibility, the frequency domain position of the frequency domain resource of the second resource in the frequency domain resource set of the second symbol is different from the frequency domain position of the frequency domain resource of the first resource in the frequency domain resource set of the first symbol; and / or, the code domain resource of the second resource is different from the code domain resource of the first resource. For example, see Figure 6c FIG. 1 is a schematic diagram of a corresponding relationship between a first resource and a second resource provided in an embodiment of the present application. Figure 6c In the example, terminal device 1 sends a first signal to terminal device 3 on resource 1 corresponding to symbol 1 in time slot T1, the frequency domain resource of resource 1 is RB0, and the position of RB0 in the frequency domain resource set corresponding to symbol 1 is used to determine the identity of terminal device 1; terminal device 2 sends a first signal to terminal device 3 on resource 2 corresponding to symbol 1 in time slot T1, the frequency domain resource of resource 2 is RB1, and the position of RB1 in the frequency domain resource set corresponding to symbol 1 is used to determine the identity of terminal device 2. After terminal device 3 receives the first signal from terminal device 1 and terminal device 2 on symbol 1 in time slot T1, terminal device 3 sends response information for the first signal to terminal device 1 and terminal device 2 respectively on symbol 1 in time slot R1 corresponding to symbol 1 in time slot T1. Among them, response information is sent to terminal device 1 on resource 3 corresponding to symbol 1 of time slot R1, the frequency domain resource of resource 3 is RB0, and the code domain resource is the first cyclic shift of RB0, and the frequency domain resource and code domain resource of resource 3 are used to determine the identification of terminal device 1; response information is sent to terminal device 1 on resource 4 corresponding to symbol 1 of time slot R1, the frequency domain resource of resource 4 is RB0, and the code domain resource is the second cyclic shift of RB0, and the frequency domain resource and code domain resource of resource 4 are used to determine the identification of terminal device 2.

[0119] In a possible implementation, a resource set corresponding to a symbol in the present application can be used by different terminal devices to send a first signal; or, a resource set corresponding to a symbol can be used by different terminal devices to send response information to the first signal; or, a portion of the resources in the resource set corresponding to a symbol can be used by multiple terminal devices to send response information to the first signal, and another portion of the resources can be used by other terminal devices to send signals for beam management.

[0120] The following takes the second resource set corresponding to the second symbol as an example to explain the situation in which part of the resources in the resource set corresponding to a symbol can be used by multiple terminal devices to send response information to the first signal, and the other part of the resources can be used by other terminal devices to send signals for beam management. The second resource set includes a second resource for the second terminal device to send response information to the first signal, and may also include a signal (for example, called a second signal) for the third terminal device to send a beam management signal. Among them, the second signal is a signal sent by the third terminal device, and the second signal is a signal for the third terminal device to perform beam management; the second signal can also be a reference signal or a reference sequence. For the description of the reference signal and the reference sequence, please refer to the aforementioned explanation that the first signal is a reference signal or a reference sequence, which will not be repeated here.

[0121] For example, see Figure 6d As shown, the first terminal device sends a first signal to the second terminal device on the first resource of symbol 1 in time slot T1, and the second terminal device sends response information corresponding to the first signal to the first terminal device on the second resource of symbol 1 in time slot R1. The third terminal device sends a second signal to the fourth terminal device on the third resource of symbol 1 in time slot R1, and the fourth terminal device sends response information corresponding to the second signal to the third terminal device on the fourth resource of symbol 1 in time slot R2.

[0122] Among them, when the first signal and the second signal are reference signals (or reference sequences), the time domain resources of the second resource are the same as the time domain resources of the third resource, and the frequency domain resources of the second resource are different from the frequency domain resources of the third resource. When the first signal and the second signal are reference sequences, the time domain resources of the second resource are the same as the time domain resources of the third resource, the frequency domain resources of the second resource may be different from the frequency domain resources of the third resource, and the code domain resources of the second resource may also be different from the code domain resources of the third resource.

[0123] In summary, through Figure 3 According to the method shown, when a transmitting end device sends a signal through a transmitting beam, the transmitting end device of the signal can be indicated by the transmitting resource of the signal (i.e., the first resource), so that in an SL communication scenario, when there are multiple transmitting end devices (including the first terminal device mentioned in the present application) sending signals through different transmitting beams, the transmitting end devices corresponding to each transmitting beam can be distinguished according to the resources of each transmitting beam for sending the signal, which is beneficial to improving the accuracy of the transmitting beam determined in the SL communication scenario, thereby helping to improve the high-frequency communication quality of SL.

[0124] It is understandable that in order to implement the functions in the above embodiments, the terminal device includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and method steps of each example described in the embodiments disclosed in this application, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software transceiver components driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0125] Figure 7 and Figure 8 The following is a schematic diagram of the structure of possible communication devices provided in the embodiments of the present application. These communication devices can be used to implement the function of the second terminal device in the above method embodiment or to implement the function of the first terminal device in the above method embodiment, so as to achieve the beneficial effects of the above method embodiment. In the embodiments of the present application, the communication device can be as follows: Figure 1 The terminal device 120 shown may also be a module (such as a chip) applied to the terminal device 120 .

[0126] like Figure 7 As shown, the communication device 700 includes a processing unit 710 and a transceiver unit 720. The communication device 700 is used to implement the above Figure 3 The function of the first terminal device in the method embodiment shown in . Wherein: the processing unit 710 is used to determine the first resource according to the identification of the first terminal device, the frequency domain resource of the first resource is used to determine the identification of the first terminal device, the first resource belongs to the first resource set corresponding to the first symbol, and the multiple resources in the first resource set are used to determine the identification of different terminal devices respectively; the transceiver unit 720 is used to send a first signal through a first transmission beam at the first resource.

[0127] In a possible implementation, the multiple transmission beams of the first terminal device correspond to the multiple symbols of the first time domain unit, the multiple transmission beams include the first transmission beam, and the multiple symbols include the first symbol.

[0128] In one possible implementation, the transceiver unit 720 is further used to receive response information for the first signal from the second terminal device on a second resource, the second symbol of the second resource is a symbol corresponding to the first symbol of the first resource, and the frequency domain resource of the second resource is determined based on the identifier of the first terminal device; the processing unit 710 is further used to determine that the first transmitting beam is the target transmitting beam based on the response information.

[0129] In a possible implementation, the second resource belongs to a second resource set corresponding to the second symbol, and the frequency domain resource of each resource in the second resource set is determined according to the identifier of different terminal devices.

[0130] In a possible implementation, the second symbol belongs to a second time domain unit, and the symbols in the second time domain unit correspond one-to-one to the symbols in the first time domain unit.

[0131] In a possible implementation, the frequency domain position of the frequency domain resource of the first resource in the frequency domain resource set of the first symbol is used to determine the identifier of the first terminal device.

[0132] In a possible implementation, the frequency domain resource of the first resource is a first resource block RB or a first resource element RE.

[0133] In a possible implementation, the frequency domain resource of the first resource is a first RB, and the second RE in the first RB is used to determine the beam index of the first transmit beam.

[0134] In a possible implementation, the frequency domain position of the second RE in the first RB is used to determine the beam index of the first transmit beam.

[0135] In a possible implementation, the first signal is a reference signal or a reference sequence.

[0136] In a possible implementation, the first signal is a reference sequence, and the frequency domain resources of the first resource and the code domain resources of the first resource are used to determine an identifier of the first terminal device.

[0137] In a possible implementation, the first signal is a reference sequence, and the code domain resources of the first resource are used to determine a beam index of the first transmit beam.

[0138] In one possible implementation, the second resource set corresponding to the second symbol also includes a third resource, the frequency domain resources of the third resource are different from the frequency domain resources of the second resource, the third resource is used for the third terminal device to send a second signal, the second signal is different from the first signal, and the frequency domain resources of the third resource are used to determine the identification of the third terminal device.

[0139] For more detailed description of the transceiver unit 720 and the processing unit 710, please refer to Figure 3 The following is a description of the first terminal device in the method embodiment shown.

[0140] like Figure 7 As shown, the communication device 700 includes a processing unit 710 and a transceiver unit 720. The communication device 700 is used to implement the above Figure 3 The function of the second terminal device in the method embodiment shown in . Wherein: the transceiver unit 720 is used to receive a first signal from a first terminal device through a first resource, the frequency domain resource of the first resource is used to determine the identification of the first terminal device, the first resource belongs to a first resource set corresponding to the first symbol, and multiple resources in the first resource set are respectively used to determine the identification of different terminal devices.

[0141] In a possible implementation, the multiple transmission beams of the first terminal device correspond to the multiple symbols of the first time domain unit, the multiple transmission beams include the first transmission beam, and the multiple symbols include the first symbol.

[0142] In one possible implementation, the processing unit 710 is used to determine a second resource, where the second symbol of the second resource is a symbol corresponding to the first symbol in the first resource, and the frequency domain resource of the second resource is determined based on the identifier of the first terminal device; the transceiver unit 720 is also used to send response information for the first signal to the first terminal device in the second resource.

[0143] In a possible implementation, the second resource belongs to a second resource set corresponding to the second symbol, and the frequency domain resource of each resource in the second resource set is determined according to the identifier of different terminal devices.

[0144] In a possible implementation, the second symbol belongs to a second time domain unit, and the symbols in the second time domain unit correspond one-to-one to the symbols in the first time domain unit.

[0145] In a possible implementation, the frequency domain position of the frequency domain resource of the first resource in the frequency domain resource set of the first symbol is used to determine the identifier of the first terminal device.

[0146] In a possible implementation, the frequency domain resource in the first resource is a first resource block RB or a first resource element RE.

[0147] In a possible implementation, the first frequency domain unit is a first RB, and the second RE in the first RB is used to determine a beam index of the first transmit beam.

[0148] In a possible implementation, the frequency domain position of the second RE in the first RB is used to determine the beam index of the first transmit beam.

[0149] In a possible implementation, the first signal is a reference signal or a reference sequence.

[0150] In a possible implementation, the first signal is a reference sequence, and the frequency domain resources of the first resource and the code domain resources of the first resource are used to determine an identifier of the first terminal device.

[0151] In a possible implementation, the first signal is a reference sequence, and the code domain resources of the first resource are used to determine a beam index of the first transmit beam.

[0152] In one possible implementation, the second resource set corresponding to the second symbol also includes a third resource, the frequency domain resource of the third resource is different from the frequency domain resource of the second resource, the third resource is used for a third terminal device to send a second signal, the second signal is different from the first signal, and the frequency domain unit of the third resource is used to determine the identification of the third terminal device.

[0153] For more detailed description of the transceiver unit 720 and the processing unit 710, please refer to Figure 3 The following is a description of the second terminal device in the method embodiment shown.

[0154] like Figure 8 As shown, the communication device 800 includes a processor 810 and an interface circuit 820. The processor 810 and the interface circuit 820 are coupled to each other. It is understood that the interface circuit 820 can be a transceiver or an input-output interface. Optionally, the communication device 800 may also include a memory 830 for storing instructions executed by the processor 810 or storing input data required by the processor 810 to execute instructions or storing data generated after the processor 810 executes instructions.

[0155] When the communication device 800 is used to implement Figure 3 When the method is shown, the processor 810 is used to implement the function of the above-mentioned processing unit 710, and the interface circuit 820 is used to implement the function of the above-mentioned transceiver unit 720.

[0156] When the communication device is a chip applied to the first terminal device, the chip implements the function of the first terminal device in the above method embodiment. The chip receives information from the base station, which can be understood as the information is first received by other modules in the terminal (such as a radio frequency module or an antenna), and then sent to the terminal chip by these modules. The terminal chip sends information to the base station, which can be understood as the information is first sent to other modules in the terminal (such as a radio frequency module or an antenna), and then sent to the base station by these modules.

[0157] When the above-mentioned communication device is a chip applied to the second terminal device, the chip implements the function of the second terminal device in the above-mentioned method embodiment. The chip receives information from the base station, which can be understood as the information is first received by other modules in the terminal (such as a radio frequency module or an antenna), and then sent to the terminal chip by these modules. The terminal chip sends information to the base station, which can be understood as the information is first sent to other modules in the terminal (such as a radio frequency module or an antenna), and then sent to the base station by these modules.

[0158] In the present application, when entity A sends information to entity B, it can be that A sends it directly to B, or that A sends it to B indirectly through other entities. Similarly, when entity B receives information from entity A, it can be that entity B directly receives the information sent by entity A, or that entity B indirectly receives the information sent by entity A through other entities. Entities A and B here can be RAN nodes or terminals, or modules inside the RAN nodes or terminals. The sending and receiving of information can be information interaction between a RAN node and a terminal, for example, information interaction between a base station and a terminal; the sending and receiving of information can also be information interaction between two RAN nodes, for example, information interaction between a CU and a DU; the sending and receiving of information can also be information interaction between different modules inside a device, for example, information interaction between a terminal chip and other modules of the terminal, or information interaction between a base station chip and other modules in the base station.

[0159] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0160] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. The processor and the storage medium can also be present in a base station or a terminal as discrete components.

[0161] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device. The computer program or instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instruction may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server, data center, etc. that integrates one or more available media. The available medium may be a magnetic medium, for example, a floppy disk, a hard disk, a tape; it may also be an optical medium, for example, a digital video disc; it may also be a semiconductor medium, for example, a solid-state hard disk. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0162] In the various embodiments of the present application, unless otherwise specified or provided for in any logical conflict, the terms and / or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

[0163] In the present application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of the present application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of the present application, the character " / " indicates that the previous and next associated objects are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0164] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that: The method comprises: Determine a first resource according to an identifier of a first terminal device, where a frequency domain resource of the first resource is used to determine the identifier of the first terminal device, the first resource belongs to a first resource set corresponding to a first symbol, and a plurality of resources in the first resource set are respectively used to determine identifiers of different terminal devices; A first signal is transmitted via a first transmission beam on the first resource.

2. The method according to claim 1, characterized in that: The multiple transmission beams of the first terminal device correspond to multiple symbols of a first time domain unit, the multiple transmission beams include the first transmission beam, and the multiple symbols include the first symbol.

3. The method according to claim 1 or 2, characterized in that: The method further comprises: receiving, on a second resource, response information for the first signal from a second terminal device, wherein a second symbol of the second resource is a symbol corresponding to the first symbol of the first resource, and a frequency domain resource of the second resource is determined according to an identifier of the first terminal device; The first transmission beam is determined as a target transmission beam according to the response information.

4. The method according to claim 3, characterized in that: The second resource belongs to a second resource set corresponding to the second symbol, and the frequency domain resource of each resource in the second resource set is determined according to the identifier of different terminal devices.

5. The method according to claim 3 or 4, characterized in that: The second symbol belongs to a second time domain unit, and the symbols in the second time domain unit correspond one-to-one to the symbols in the first time domain unit.

6. The method according to any one of claims 1 to 5, characterized in that: The frequency domain resource of the first resource is used to determine the identifier of the first terminal device, including: The frequency domain position of the frequency domain resource of the first resource in the frequency domain resource set of the first symbol is used to determine the identifier of the first terminal device.

7. The method according to claim 6, characterized in that: The frequency domain resource of the first resource is a first resource block RB or a first resource element RE.

8. The method according to claim 7, characterized in that: The frequency domain resource of the first resource is a first RB, and the second RE in the first RB is used to determine the beam index of the first transmit beam.

9. The method according to claim 8, characterized in that: The second RE in the first RB is used to determine a beam index of the first transmit beam, including: The frequency domain position of the second RE in the first RB is used to determine the beam index of the first transmit beam.

10. The method according to any one of claims 1 to 9, characterized in that: The first signal is a reference signal or a reference sequence.

11. The method according to claim 1, characterized in that: The first signal is a reference sequence, and the frequency domain resource of the first resource is used to determine the identifier of the first terminal device, including: The frequency domain resources of the first resources and the code domain resources of the first resources are used to determine an identifier of the first terminal device.

12. The method according to claim 1, characterized in that: The first signal is a reference sequence, and the code domain resources of the first resources are used to determine the beam index of the first transmit beam.

13. The method according to any one of claims 3 to 12, characterized in that: The second resource set corresponding to the second symbol also includes a third resource, the frequency domain resources of the third resource are different from the frequency domain resources of the second resource, the third resource is used for a third terminal device to send a second signal, the second signal is different from the first signal, and the frequency domain resources of the third resource are used to determine the identification of the third terminal device.

14. A communication method, characterized in that: The method comprises: A first signal is received from a first terminal device via a first resource, a frequency domain resource of the first resource is used to determine an identifier of the first terminal device, the first resource belongs to a first resource set corresponding to a first symbol, and multiple resources in the first resource set are respectively used to determine identifiers of different terminal devices.

15. The method according to claim 14, characterized in that: The multiple transmission beams of the first terminal device correspond to multiple symbols of a first time domain unit, the multiple transmission beams include the first transmission beam, and the multiple symbols include the first symbol.

16. The method according to claim 14 or 15, characterized in that: The method further comprises: Determine a second resource, where a second symbol of the second resource is a symbol corresponding to the first symbol in the first resource, and a frequency domain resource of the second resource is determined according to an identifier of the first terminal device; Response information to the first signal is transmitted to the first terminal device via the second resource.

17. The method according to claim 16, characterized in that: The second resource belongs to a second resource set corresponding to the second symbol, and the frequency domain resource of each resource in the second resource set is determined according to the identifier of different terminal devices.

18. The method according to claim 16 or 17, characterized in that: The second symbol belongs to a second time domain unit, and the symbols in the second time domain unit correspond one-to-one to the symbols in the first time domain unit.

19. The method according to any one of claims 14 to 18, characterized in that: The frequency domain resources in the first resources are used to determine the identifier of the first terminal device, including: The frequency domain position of the frequency domain resource of the first resource in the frequency domain resource set of the first symbol is used to determine the identifier of the first terminal device.

20. The method according to claim 19, characterized in that: The frequency domain resource in the first resource is a first resource block RB or a first resource element RE.

21. The method according to claim 20, characterized in that: The first frequency domain unit is a first RB, and the second RE in the first RB is used to determine the beam index of the first transmit beam.

22. The method according to claim 21, characterized in that: The second RE in the first RB is used to determine a beam index of the first transmit beam, including: The frequency domain position of the second RE in the first RB is used to determine the beam index of the first transmit beam.

23. The method according to any one of claims 14 to 22, characterized in that: The first signal is a reference signal or a reference sequence.

24. The method according to claim 14, characterized in that: The first signal is a reference sequence, and the frequency domain resource of the first resource is used to determine the identifier of the first terminal device, including: The frequency domain resources of the first resources and the code domain resources of the first resources are used to determine an identifier of the first terminal device.

25. The method according to claim 14, characterized in that: The first signal is a reference sequence, and the code domain resources of the first resources are used to determine the beam index of the first transmit beam.

26. The method according to any one of claims 16 to 25, characterized in that: The second resource set corresponding to the second symbol also includes a third resource, the frequency domain resource of the third resource is different from the frequency domain resource of the second resource, the third resource is used for a third terminal device to send a second signal, the second signal is different from the first signal, and the frequency domain unit of the third resource is used to determine the identification of the third terminal device.

27. A communication device, characterized in that: The method comprises a module for executing the method according to any one of claims 1 to 13, or comprises a module for executing the method according to any one of claims 14 to 26.

28. A communication device, characterized in that: It includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor is used to implement the method as described in any one of claims 1 to 13 through a logic circuit or by executing code instructions, or the processor is used to implement the method as described in any one of claims 14 to 26 through a logic circuit or by executing code instructions.

29. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or an instruction. When the computer program or the instruction is executed by the communication device, the method according to any one of claims 1 to 13 is implemented, or the method according to any one of claims 14 to 26 is implemented.

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