Communication method and communication apparatus

Abstract

The present application provides a communication method and a communication apparatus. The method comprises: a terminal device receiving at least one piece of configuration information, wherein the at least one piece of configuration information has one-to-one correspondence to at least one sensing system, the at least one piece of configuration information comprises first configuration information, the at least one sensing system comprises a first sensing system corresponding to the first configuration information, and the first configuration information is used for determining whether the first sensing system is available; and on the basis of the at least one piece of configuration information, determining an available sensing system among the at least one sensing system. In the present application, a terminal device can determine, on the basis of configuration information of a sensing system, whether the sensing system is available, so as to avoid degradation of the communication quality caused by the terminal device using an unavailable sensing system.

Description

Communication method and communication apparatus

[0001] This application claims priority to the Chinese Patent Application No. 202410649939.4, filed on May 23, 2024, and entitled "Communication method and communication apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication, and more particularly, to a communication method and a communication apparatus. BACKGROUND

[0003] Sensing fusion has become a research hotspot as one of the potential key technologies of the next generation mobile communication system. The acquisition of sensing signals can enhance the performance of wireless communication in some aspects, and at the same time, the performance of traditional sensing services can also be improved by using wireless communication systems. For example, based on the characteristics of sensing-assisted communication of the next generation communication system, the multiple-input multiple-output (MIMO) system can potentially achieve more efficient data transmission without relying on the traditional channel state information (CSI) acquisition mechanism based on the acquired sensing parameters. SUMMARY

[0004] The present application provides a communication method and a communication apparatus to select a suitable MIMO transmission mode, thereby improving the communication quality.

[0005] In a first aspect, a communication method is provided. The method can be applied to the terminal side, that is, the method can be executed by a terminal device, or can be executed by a component (such as a chip or a chip system or a circuit or a communication module) of the terminal device, which is not limited in the present application. Hereinafter, the terminal device will be mainly taken as an example for description.

[0006] The method comprises: receiving at least one configuration information, the at least one configuration information corresponding to at least one sensing system one by one, the at least one configuration information comprising a first configuration information, the at least one sensing system comprising a first sensing system corresponding to the first configuration information, the first configuration information being used to determine whether the first sensing system is available; and determining an available sensing system in the at least one sensing system according to the at least one configuration information.

[0007] Based on the above technical solution, the terminal device can determine the available sensing system in the at least one sensing system according to the configuration information of the at least one sensing system, so as to avoid the decline of communication quality caused by the communication between the terminal device and the network device using the unavailable sensing system.

[0008] With reference to the first aspect, in some implementations of the first aspect, the first sensing system comprises a first antenna array, and the first configuration information comprises one or more of the following: a number of horizontal directional antenna ports of the first antenna array, a number of vertical directional antenna ports of the first antenna array, a spacing of any two adjacent antenna elements included in the first antenna array in a horizontal direction, a spacing of any two adjacent antenna elements included in the first antenna array in a vertical direction, an angular domain resolution of the first antenna array, a directional angle corresponding to the angular domain resolution of the first antenna array, or an included angle between a pointing direction of a second antenna array and a pointing direction of the first antenna array, wherein the second antenna array is a currently used antenna array.

[0009] With reference to the first aspect, in some implementations of the first aspect, the first configuration information further comprises environmental sensing result information obtained by the first sensing system.

[0010] Based on the above technical solution, the terminal device can determine the expected communication quality of the first sensing system according to the environmental sensing result information obtained by the first sensing system and the angle information corresponding to the effective multipath, so as to more accurately estimate the expected communication quality of the first sensing system according to the angle information corresponding to the effective multipath. The angle information corresponding to the effective multipath can also be referred to as a precoding subset, and the precoding subset belongs to a precoding universal set determined according to the environmental sensing result information.

[0011] With reference to the first aspect, in some implementations of the first aspect, the method further comprises: receiving first indication information, the first indication information being used to indicate one or more of the following: a measurement manner of the expected communication quality corresponding to the at least one sensing system, or a communication quality threshold.

[0012] With reference to the first aspect, in some implementations of the first aspect, determining the available sensing system from the at least one sensing system according to the at least one configuration information comprises: determining a first precoding matrix corresponding to the first sensing system according to the first configuration information and a second precoding matrix, the second precoding matrix being related to a downlink channel of a current system; determining the expected communication quality corresponding to the first sensing system according to the first precoding matrix; if the expected communication quality corresponding to the first sensing system is greater than or equal to the communication quality threshold, or the expected communication quality corresponding to the first sensing system is greater than or equal to the communication quality corresponding to the current system, determining that the first sensing system is an available sensing system; or, if the expected communication quality corresponding to the first sensing system is less than or equal to the communication quality threshold, or the expected communication quality corresponding to the first sensing system is less than or equal to the communication quality corresponding to the current system, determining that the first sensing system is not an available sensing system.

[0013] Based on the technical solution, the terminal device can determine the available sensing system with better expected communication quality, and if the terminal device and the network device communicate based on the available sensing system, the communication quality can be improved.

[0014] With reference to the first aspect, in some implementations of the first aspect, the second precoding matrix is determined according to a downlink channel of the current system, or the second precoding matrix is determined according to the downlink channel of the current system and the environmental sensing result information obtained through the first sensing system.

[0015] With reference to the first aspect, in some implementations of the first aspect, determining the available sensing system according to the at least one configuration information includes: determining, according to the first configuration information, an angle domain resolution of a first antenna array included in the first sensing system; if the angle domain resolution of the first antenna array is greater than or equal to an angle domain resolution of a second antenna array used by the current system, determining that the first sensing system is an available sensing system; or if the angle domain resolution of the first antenna array is less than or equal to the angle domain resolution of the second antenna array used by the current system, determining that the first sensing system is not an available sensing system.

[0016] Based on the technical solution, the terminal device does not need to perform complex communication quality estimation, and can determine the available sensing system by comparing the angle resolution of the antenna array of the sensing system with the angle resolution of the antenna array used by the current system.

[0017] With reference to the first aspect, in some implementations of the first aspect, the method further includes: sending second indication information, the second indication information being used to indicate at least one available sensing system.

[0018] Based on the technical solution, the terminal device indicates at least one available sensing system to the network device, and the network device can flexibly and efficiently select a downlink MIMO transmission mode.

[0019] With reference to the first aspect, in some implementations of the first aspect, the second indication information is further used to indicate expected communication quality corresponding to the at least one available sensing system.

[0020] With reference to the first aspect, in some implementations of the first aspect, the method further includes: receiving a downlink signal precoded by a third precoding matrix, the third precoding matrix corresponding to one of the at least one available sensing system.

[0021] Based on the technical solution, when the network device performs downlink precoding through the sensing system, the network device can not rely on the downlink channel state information fed back by the terminal device, thereby reducing system pilot overhead and energy consumption.

[0022] In a second aspect, a communication method is provided. The method can be applied to a network side, i.e., the method can be performed by a network device, or can be performed by a component (e.g., a chip or a chip system or a circuit or a communication module) of the network device, which is not limited in the application. Hereinafter, the network device is mainly taken as an example for description.

[0023] The method comprises: sending at least one configuration information, the at least one configuration information corresponding to at least one perception system one by one, the at least one configuration information comprising first configuration information, the at least one perception system comprising a first perception system corresponding to the first configuration information, the first configuration information being used to determine whether the first perception system is available; and receiving second indication information, the second indication information being used to indicate at least one available perception system in the at least one perception system.

[0024] With reference to the second aspect, in some implementations of the second aspect, the first perception system comprises a first antenna array, and the first configuration information comprises one or more of the following: a number of horizontal directional antenna ports of the first antenna array, a number of vertical directional antenna ports of the first antenna array, a horizontal direction interval of any two adjacent antenna elements included in the first antenna array, a vertical direction interval of any two adjacent antenna elements included in the first antenna array, an angular domain resolution of the first antenna array, a direction angle corresponding to the angular domain resolution of the first antenna array, or an included angle between a pointing direction of a second antenna array and a pointing direction of the first antenna array; wherein the second antenna array is a currently used antenna array.

[0025] With reference to the second aspect, in some implementations of the second aspect, the first configuration information further comprises: environmental perception result information obtained by the first perception system.

[0026] With reference to the second aspect, in some implementations of the second aspect, the method further comprises: sending first indication information, the first indication information being used to indicate one or more of the following: a measurement manner of an expected communication quality corresponding to the at least one perception system, or a communication quality threshold.

[0027] With reference to the second aspect, in some implementations of the second aspect, the second indication information is further used to indicate an expected communication quality corresponding to the at least one available perception system.

[0028] With reference to the second aspect, in some implementations of the second aspect, the method further comprises: sending a downlink signal pre-coded by a third precoding matrix, the third precoding matrix corresponding to one of the at least one available perception system.

[0029] The beneficial effects and possible designs relating to the second aspect can be referred to the related description of the first aspect, and will not be repeated here.

[0030] In a third aspect, a communication apparatus is provided, which is configured to execute the method in any possible implementation of the first aspect or the second aspect. Specifically, the apparatus can include units and / or modules configured to execute the method in any possible implementation of the first aspect or the second aspect, such as a processing unit and / or a communication unit.

[0031] In an implementation, the apparatus is a communication device, such as a terminal device, or a network device. When the apparatus is a communication device, the communication unit can be a transceiver, or an input / output interface; and the processing unit can be at least one processor. Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0032] In another implementation, the apparatus is a chip, chip system or circuit, or a communication module for a communication device, such as a terminal device, or a network device. When the apparatus is a chip, chip system or circuit for a communication device, the communication unit can be an input / output interface, an interface circuit, an output circuit, an input circuit, a pin or related circuitry, etc. on the chip, chip system or circuit; and the processing unit can be at least one processor, a processing circuit or a logic circuit, etc.

[0033] In a fourth aspect, a communication apparatus is provided, which includes at least one processor configured to execute computer programs or instructions to perform the method in any possible implementation of the first aspect or the second aspect. Optionally, the apparatus further includes a memory configured to store the computer programs or instructions. Optionally, the apparatus further includes a communication interface coupled to the processor, which can be configured to input the computer programs or instructions to the processor, or output information in the processor.

[0034] In an implementation, the apparatus is a communication device, such as a terminal device, or a network device.

[0035] In another implementation, the apparatus is a chip, chip system or circuit, or a communication module for a communication device, such as a terminal device, or a network device.

[0036] In a fifth aspect, a processor is provided, which is configured to execute the method provided in any one of the first aspect to the second aspect.

[0037] For the sending and obtaining / receiving operations involved by the processor, if no special description is made, or if it does not conflict with the actual role or internal logic in the related description, it can be understood as the processor output and receiving, input operations, and also can be understood as the sending and receiving operations performed by the radio frequency circuit and the antenna, and the present application does not limit this.

[0038] Optionally, the apparatus further comprises a memory for storing a program; correspondingly, the at least one processor is configured to execute the computer program or instructions in the memory.

[0039] Optionally, the apparatus further comprises a communication interface. The communication interface is coupled with the processor, and can be used for inputting information to the processor, or outputting information in the processor.

[0040] In a sixth aspect, a computer readable storage medium is provided, the computer readable medium storing program codes for execution by an apparatus, the program codes comprising codes for performing the method in any possible implementation of the first aspect to the second aspect.

[0041] In a seventh aspect, a computer program product containing instructions which, when the computer program product is executed on a computer, cause the computer to carry out the method in any possible implementation of the first aspect to the second aspect.

[0042] In an eighth aspect, a chip is provided, the chip comprising a processor and a communication interface, the processor reading instructions on a memory through the communication interface, and executing the method provided by any of the first aspect to the second aspect in any possible implementation.

[0043] Optionally, the chip is a Modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip containing a modem core.

[0044] Optionally, as an implementation, the chip further comprises a memory, the memory storing computer programs or instructions, and the processor is configured to execute the computer programs or instructions on the memory, and when the computer programs or instructions are executed, the processor is configured to execute the method provided by any of the first aspect to the second aspect in any possible implementation.

[0045] In a ninth aspect, a computer program product containing instructions is provided, when the computer program product is executed on a computer, causing the computer to execute the method provided by any of the first aspect to the second aspect in any possible implementation.

[0046] In a tenth aspect, a communication system is provided, comprising the terminal device and the network device as described above. BRIEF DESCRIPTION OF DRAWINGS

[0047] FIG. 1 is a schematic diagram of a system suitable for the method provided by the embodiments of the present application.

[0048] FIG. 2 is another schematic diagram of an architecture of a mobile communication system to which the embodiments of the present application are applied.

[0049] FIG. 3 is another schematic diagram of a wireless communication system suitable for the embodiments of the present application.

[0050] FIG. 4 is a schematic flowchart of a communication method 400 provided by the embodiments of the present application.

[0051] FIG. 5 is a schematic diagram of a horizontal angle and a vertical angle included in the environment perception result information.

[0052] FIG. 6 is a schematic diagram of the beneficial effects of the method provided by the embodiments of the present application.

[0053] FIG. 7 is a schematic diagram of a communication apparatus 700 provided by the embodiments of the present application.

[0054] FIG. 8 is a schematic diagram of another communication apparatus 800 provided by the embodiments of the present application.

[0055] FIG. 9 is a schematic diagram of a chip system 900 provided by the embodiments of the present application. DETAILED DESCRIPTION

[0056] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0057] The technical solutions provided in the present application can be applied to various communication systems, for example, a 5th generation (5G) or new radio (NR) system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, and the like. The technical solutions provided in the present application can also be applied to future communication systems. The technical solutions provided in the present application can also be applied to device to device (D2D) communication, vehicle-to-everything (V2X) communication, machine to machine (M2M) communication, machine type communication (MTC), and internet of things (IoT) communication systems. The technical solutions provided in the present application can also be applied to low-frequency scenarios, high-frequency scenarios, terahertz, optical communication, licensed frequency bands, and unlicensed frequency bands, and the like. The technical solutions provided in the present application can also be applied to non-terrestrial network (NTN) systems such as inter-satellite communication and satellite communication. As an example, a satellite communication system includes a satellite base station and a terminal device. The satellite base station provides communication services for the terminal device. The satellite base station can also communicate with a base station. The satellite can act as a base station or a terminal device. The satellite can refer to a drone, a hot air balloon, a low-orbit satellite, a medium-orbit satellite, a high-orbit satellite, and the like. The satellite can also refer to a non-ground base station or a non-ground device, and the like.

[0058] A device in a communication system can send a signal to another device or receive a signal from another device. The signal can include information, signaling, or data, and the like. The device can also be replaced by an entity, a network entity, a network element, a communication device, a communication module, a node, a communication node, and the like. The present disclosure describes the device as an example. For example, the communication system can include at least one terminal device and at least one network device. The network device can send a downlink signal to the terminal device, and / or the terminal device can send an uplink signal to the network device.

[0059] The terminal device in the embodiments of the present application includes various devices with wireless communication functions, which can be used to connect people, things, machines, etc. The terminal device can be widely used in various scenarios, such as: cellular communication, D2D, V2X, peer to peer (P2P), M2M, MTC, IoT, virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, intelligent transportation, smart city UAV, robot, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery, etc. The terminal device can be a terminal in any of the above scenarios, such as an MTC terminal, an IoT terminal, etc. The terminal device can be a user equipment (UE) of the 3rd generation partnership project (3GPP) standard, a terminal, a fixed device, a mobile station device or a mobile device, a subscriber unit, a handheld device, a vehicle-mounted device, a wearable device, a cellular phone, a smart phone, a SIP phone, a wireless data card, a personal digital assistant (PDA), a computer, a tablet computer, a notebook computer, a wireless modem, a handset, a laptop computer, a computer with wireless transceiver function, a smart book, a vehicle, a satellite, a global positioning system (GPS) device, a target tracking device, an aircraft (such as a drone, a helicopter, a multi-helicopter, a quad-helicopter, or an airplane, etc.), a ship, a remote control device, a smart home device, an industrial device, or a device built-in in the above devices (such as a communication module, a modem or a chip in the above devices, etc.), or other processing devices connected to the wireless modem. For the convenience of description, the terminal device will be described as an example of a terminal or UE hereinafter.

[0060] It should be understood that in some scenarios, the UE can also be used to act as a base station. For example, the UE can act as a scheduling entity which provides sidelink signals between UEs in scenarios such as V2X, D2D or P2P, etc.

[0061] In the embodiments of the present application, the apparatus for implementing the function of the terminal device, i.e., the terminal apparatus, can be a terminal device, or can be an apparatus capable of supporting the terminal device to implement the function, such as a chip system or a chip, which can be installed in the terminal device. In the embodiments of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices.

[0062] The network device in the embodiments of the present application can be a device for communicating with the terminal device, and the network device can also be referred to as an access network device or a radio access network device, such as a network device, which can be a base station. The network device in the embodiments of the present application can refer to a radio access network (RAN) node (or device) for accessing the terminal device to a wireless network. The base station can broadly cover various names in the following or be replaced by the following names, such as: Node B (NodeB), evolved Node B (eNB), next generation Node B (gNB), relay station, access point, transmission point (transmit / receive point, TRP), transmission point, primary station, secondary station, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. In one possible design, the processing unit in the BBU for implementing baseband functions is referred to as a base band high (BBH) unit, and the processing unit in the RRU / AAU / RRH for implementing baseband functions is referred to as a base band low (BBL) unit. The base station can be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. The base station can also refer to a communication module, modem or chip for being arranged in the aforementioned device or apparatus. The base station can also be a mobile switching center, a device assuming a base station function in D2D, V2X, M2M communication, a device assuming a base station function in future communication systems, etc. The base station can support networks of the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0063] In some deployments, the network device mentioned in embodiments of the present application can be a device including a CU, or a DU, or a device including a CU and a DU, or a control plane CU node (central unit-control plane (CU-CP)) and a user plane CU node (central unit-user plane (CU-UP)) and a DU node. For example, the network device can include a gNB-CU-CP, a gNB-CU-UP and a gNB-DU.

[0064] In some deployments, wireless access is assisted for a terminal by cooperation of multiple RAN nodes, and different RAN nodes respectively implement part of the functions of a base station. For example, the RAN node can be a CU, a DU, a CU-CP, a CU-UP, or a radio unit (RU), etc. The CU and the DU can be separately arranged, or can also be included in the same network element, for example, in a BBU. The RU can be included in a radio frequency device or a radio frequency unit, for example, included in an RRU, an AAU or an RRH.

[0065] In different systems, the CU (or CU-CP and CU-UP), DU or RU can also have different names, but those skilled in the art can understand their meanings. For example, the radio access network can also be an open radio access network (O-RAN) architecture, and in the O-RAN system, the CU can also be referred to as an open CU (O-CU), the DU can also be referred to as an open DU (O-DU), the CU-CP can also be referred to as an open CU-CP (O-CU-CP), the CU-UP can also be referred to as an open CU-UP (O-CU-UP), and the RU can also be referred to as an open RU (O-RU). Any of the CU (or CU-CP, CU-UP), DU and RU in the present application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0066] The base station can be fixed, or mobile. For example, a helicopter or a drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, the helicopter or the drone can be configured to act as a device that communicates with another base station.

[0067] In embodiments of the present application, the apparatus for implementing the function of the network device can be a network device, or can be an apparatus capable of supporting the network device to implement the function, such as a chip system or a chip, which can be installed in the network device. In embodiments of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices. In embodiments of the present application, only the apparatus for implementing the function of the network device is taken as an example of the network device, and the scheme of the embodiments of the present application is not limited.

[0068] The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water; and can also be deployed on airplanes, balloons and satellites in the air. The scenarios in which the network device and the terminal device are located are not limited in embodiments of the present application. In addition, the terminal device and the network device can be hardware devices, or can be software functions running on special hardware, software functions running on general hardware, such as virtualized functions instantiated on a platform (for example, a cloud platform), or entities including special or general hardware devices and software functions. The specific forms of the terminal device and the network device are not limited in the present application.

[0069] First, a communication system suitable for embodiments of the present application is briefly introduced as follows.

[0070] As shown in FIG. 1, the communication system 100 can include one or more network devices, for example, the network device 101 shown in FIG. 1. The communication system 100 can also include one or more terminal devices, for example, the terminal device 102, the terminal device 103 and the terminal device 104 shown in FIG. 1. The communication system 100 can support sidelink communication technology, for example, sidelink communication between the terminal device 102 and the terminal device 103, sidelink communication between the terminal device 102 and the terminal device 104, and the like.

[0071] It should be understood that FIG. 1 is only a schematic diagram, and the communication system can also include other network devices, such as the core network device 105 and wireless relay devices and wireless backhaul devices not shown in FIG. 1. The number of network devices and terminal devices included in the mobile communication system is not limited in embodiments of the present application.

[0072] The communication between the network device 101 and the terminal device 102 in the communication system shown in FIG. 1 can also be represented in another form.

[0073] As shown in FIG. 2, the terminal device 102 includes a processor 121, a memory 122, and a transceiver 123 including a transmitter 1231, a receiver 1232, and an antenna 1233. The receiver 1232 can be configured to receive transmission control information through the antenna 1233, and the transmitter 1231 can be configured to send transmission feedback information to the network device 101 through the antenna 1233. The network device 101 includes a processor 111, a memory 112, and a transceiver 113 including a transmitter 1131, a receiver 1132, and an antenna 1133. The transmitter 1131 can be configured to send transmission control information to the terminal device 102 through the antenna 1133, and the receiver 1132 can be configured to receive transmission feedback information sent by the terminal device 102 through the antenna 1133.

[0074] Embodiments of the present application can also be applied to an open-RAN (O-RAN) system architecture.

[0075] As shown in FIG. 3, the O-RAN system can include a core network (CN) device, an access network device (RAN), and a terminal device (UE). The access network device communicates with the core network device through a backhaul link and communicates with the terminal device through an air interface. For example, a BBU in the access network device communicates with the core network device through a backhaul link, and an RU in the access network device communicates with the terminal device through an air interface. The BBU communicates with at least one RU through a front-haul link, and the BBU and the RU can or can not be co-located. The BBU includes at least one CU and at least one DU, and the CU and the DU can communicate through at least one mid-haul link.

[0076] FIG. 3 is only a schematic diagram, and the wireless communication system can also include other devices, which are not shown in FIG. 3.

[0077] In order to better understand the technical solutions of the present application, some related technologies involved in the technical solutions of the present application are introduced.

[0078] 1. Multi-input multi-output (MIMO) technology: MIMO technology utilizes the spatial dimension resource, which can obtain array gain, multiplexing and diversity gain, and interference cancellation gain in space without increasing the system bandwidth, and can multiply the capacity and spectrum efficiency of the communication system. Therefore, since its advent, it has been one of the most typical and effective solutions to overcome the non-ideal characteristics problems such as fading and inter-symbol interference caused by more complex and diverse communication environments, and has been favored by wireless communication researchers. For example, in the LTE system, the MIMO system can support up to 8 layers of transmission at the sending end and the receiving end using multiple antennas.

[0079] 2、Beamforming: also known as precoding technology, the network device can determine a beamforming matrix matched with the channel state based on the known or estimated channel information to process the to-be-sent signal, so that the to-be-sent signal after beamforming is adapted to the channel, thereby enabling the signal receiving device to obtain better signal receiving quality, for example, to obtain a higher signal to interference plus noise ratio (SINR) and the like. Therefore, by using the beamforming technology, the transmitting device and multiple receiving devices can transmit signals on the same time-frequency resource, that is, multi-user multi-input multi-output (MU-MIMO) is realized.

[0080] 3、Angle vector: also known as a spatial vector, a beam vector, and the like. The angle vector can be understood as a precoding vector used for beamforming a reference signal. The process of precoding the reference signal based on the angle vector can also be regarded as a process of spatial domain (or simply, spatial) precoding.

[0081] The angle vector can be a vector with a length of T. Wherein, T can represent the number of transmit antenna ports, T > 1 and is an integer. For an angle vector with a length of T, it contains T spatial weights (or simply, weights), which can be used to weight the T transmit antenna ports, so that the reference signal transmitted by the T transmit antenna ports has a certain spatial directivity, thereby realizing beamforming.

[0082] Precoding the reference signal based on different angle vectors is equivalent to beamforming the transmit antenna ports based on different angle vectors, so that the transmitted reference signal has different spatial directivity.

[0083] It should be understood that the angle vector is a form proposed by the present application for representing an angle. The present application does not exclude the possibility of defining other names to represent the same or similar meanings in future protocols.

[0084] 4、Perception assisted communication: perception fusion has become a research hotspot as one of the potential key technologies of the next generation mobile communication system. The acquisition of perception signals can enhance the performance of wireless communication in some aspects, and at the same time, the performance of traditional perception services can also be improved by using the wireless communication system.

[0085] For example, based on the characteristic assumption of the next generation communication system perception aided communication, the MIMO system can potentially achieve more efficient data transmission based on the acquired perception parameters without relying on the traditional channel state information (CSI) acquisition mechanism. The most basic perception parameters can include multipath parameters such as the angle, time delay, power, polarization, Doppler, and phase of the multipath information. For example, when the MIMO algorithm fully utilizes the above-mentioned parameters to achieve performance enhancement, the potential gain can be reflected in the following two aspects: (1) saving the resource overhead of channel acquisition and data demodulation reference signals; (2) simplifying the CSI acquisition and data transmission process, and alleviating the problems of large transmission delay, complex configuration mechanism, and the like caused by the CSI acquisition process and radio resource control (RRC) + downlink control information (DCI) pilot configuration.

[0086] The present application provides a solution. The terminal device can determine the available perception system in the at least one perception system according to the configuration information of the at least one perception system, so as to avoid the communication quality degradation caused by the terminal device and the network device using the unavailable perception system for communication.

[0087] Before introducing the solution of the present application, the following points are explained.

[0088] (1) In the present application, "indication" can include direct indication, indirect indication, explicit indication, and implicit indication. When describing that certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0089] In the present application, the information indicated by the indication information is referred to as the to-be-indicated information. In the specific implementation process, there are many ways to indicate the to-be-indicated information, for example but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or the index of the to-be-indicated information. The to-be-indicated information can also be indirectly indicated by indicating other information, where the other information and the to-be-indicated information have an association relationship. The to-be-indicated information can also be indicated only by a part of the to-be-indicated information, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of a specific information can also be achieved by means of the arrangement order of each information agreed in advance (for example, the protocol stipulates), thereby reducing the indication overhead to a certain extent. In addition, the to-be-indicated information can be sent as a whole, or can be sent separately into multiple sub-information, and the sending period and / or sending time of these sub-information can be the same or different.

[0090] (2) In the present application, "sending" and "receiving" represent the direction of signal transmission. For example, "sending information to XX" can be understood as that the destination of the information is XX, which can include direct sending through the air interface, or indirect sending through the air interface by other units or modules. "Receiving information from YY" can be understood as that the source of the information is YY, which can include direct receiving from YY through the air interface, or indirect receiving from YY through the air interface by other units or modules. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface. In other words, sending and receiving can be carried out between devices, such as between network devices and terminal devices, or can be carried out within a device, such as between components, modules, chips, software modules or hardware modules within a device through a bus, wire or interface. In addition, "transmission" includes receiving and / or sending unless otherwise specified. For example, transmitting a signal can include receiving a signal and / or sending a signal.

[0091] (3) In various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0092] (4) In the present application, "first", "second" are only convenient for description, used for distinguishing objects, and do not limit the scope of the embodiments of the present application. They are not used to describe the order or sequence of characteristics. It should be understood that the objects thus described can be interchanged under appropriate circumstances, so as to describe schemes other than the embodiments of the present application.

[0093] (5) In the present application, "predefined" can mean standard protocol predefined, or can also mean pre-agreed or pre-negotiated between devices.

[0094] (6) The formulas involved in various embodiments of the present application are only exemplary and do not limit the protection scope of the embodiments of the present application. In the process of calculating the above-mentioned various parameters, the above-mentioned formulas can be used for calculation, or the above-mentioned formulas can be used for calculation based on the deformation, or other ways can be used for calculation to meet the results of formula calculation.

[0095] (7) In this application, the words "example", "such as", and the like are used to mean example, illustration, or description. Any embodiment or design solution described in this application as "example" should not be interpreted as more preferred or more advantageous than other embodiments or design solutions. Rather, the word "example" is used to present concepts in a concrete manner. In this application, "of", "corresponding", and "corresponding" are sometimes mixed. It should be pointed out that when their differences are not emphasized, their meanings are consistent.

[0096] The method provided by the embodiments of the present application will be described in detail below with reference to the drawings. The embodiments provided by the present application can be applied to the communication system shown in FIG. 1, without limitation.

[0097] In the following embodiments, terminal devices and network devices are exemplarily illustrated. The terminal devices can be replaced by constituent components (such as chips or chip systems or circuits or communication modules) of the terminal devices, and the network devices can be replaced by constituent components (such as chips or chip systems or circuits or communication modules) of the network devices.

[0098] Referring to FIG. 4, FIG. 4 is a schematic diagram of a communication method 400 provided by an embodiment of the present application. The method 400 shown in FIG. 4 can include the following steps.

[0099] S401, the network device sends at least one configuration information.

[0100] Correspondingly, the terminal device receives at least one configuration information.

[0101] The at least one configuration information corresponds to at least one perception system one by one. Each configuration information in the at least one configuration information is used to determine whether the corresponding perception system is available.

[0102] The at least one configuration information is described below by taking a first configuration information included in the at least one configuration information as an example. The first configuration information corresponds to a first perception system included in the at least one perception system.

[0103] Exemplarily, the first configuration information can include one or more of the following: array structure information of a first antenna array included in the first perception system, angle domain resolution of the first antenna array, direction angle corresponding to the angle domain resolution of the first antenna array, or an included angle between a pointing direction of a second antenna array and a pointing direction of the first antenna array, the second antenna array being a currently used antenna array.

[0104] The antenna array includes a plurality of antenna elements, and one antenna element can include one or more antenna ports. The array structure information of the antenna array can include one or more of the following: a number of antenna ports in a horizontal direction, a number of antenna ports in a vertical direction, a spacing between any two adjacent antenna elements included in the antenna array in the horizontal direction, or a spacing between any two adjacent antenna elements included in the antenna array in the vertical direction. The spacing between any two adjacent antenna elements included in the antenna array in the horizontal or vertical direction can be in a granularity of a wavelength. For example, the spacing between any two adjacent antenna elements included in the antenna array in the horizontal direction is one-half wavelength.

[0105] The included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array can include a horizontal included angle and / or a vertical included angle. The horizontal included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array can refer to a projection angle of the included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array in the horizontal direction, and the vertical included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array can refer to a projection angle of the included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array in the vertical direction.

[0106] The angular domain resolution of the first antenna array can include a horizontal angular domain resolution and / or a vertical angular domain resolution. The direction angle corresponding to the angular domain resolution of the first antenna array can include a direction angle corresponding to the horizontal angular domain resolution and / or a direction angle corresponding to the vertical angular domain resolution.

[0107] It should be noted that if the terminal device can determine the number of antenna ports in the horizontal direction of the first antenna array according to one or more of the following: predefined information, array structure information of the second antenna array, or array structure information of an antenna array included in a second sensing system, the first configuration information can not include the number of antenna ports in the horizontal direction of the first antenna array. The second sensing system is different from the first sensing system. For example, the number of antenna ports in the horizontal direction of the first antenna array is predefined, or is the same as the number of antenna ports in the vertical direction of the first antenna array, or is the same as the number of antenna ports in the horizontal direction or the vertical direction of the second antenna array, the first configuration information can not include the number of antenna ports in the horizontal direction of the first antenna array.

[0108] If the terminal device can determine the number of antenna ports in the vertical direction of the first antenna array according to one or more of the following: predefined information, array structure information of the second antenna array, or array structure information of an antenna array included in a second sensing system, the first configuration information can not include the number of antenna ports in the vertical direction of the first antenna array.

[0109] If the terminal device can determine the interval of any two adjacent antenna elements included in the first antenna array in the horizontal direction according to one or more of the following: pre-defined information, array structure information of the second antenna array, or array structure information of an antenna array included in the second sensing system, the first configuration information can not include the interval of any two adjacent antenna elements included in the first antenna array in the horizontal direction. For example, the interval of any two adjacent antenna elements included in the first antenna array in the horizontal direction is pre-defined, or is the same as the interval of any two adjacent antenna elements included in the first antenna array in the vertical direction, or is the same as the interval of any two adjacent antenna elements included in the second antenna array in the horizontal direction or the vertical direction, then the first configuration information can not include the interval of any two adjacent antenna elements included in the first antenna array in the horizontal direction.

[0110] If the terminal device can determine the interval of any two adjacent antenna elements included in the first antenna array in the vertical direction according to one or more of the following: pre-defined information, array structure information of the second antenna array, or array structure information of an antenna array included in the second sensing system, the first configuration information can not include the interval of any two adjacent antenna elements included in the first antenna array in the vertical direction.

[0111] If the first configuration information includes the angular domain resolution of the first antenna array, the first configuration information can not include the array structure information of the first antenna array and the direction angle corresponding to the angular domain resolution of the first antenna array.

[0112] If the first configuration information includes the array structure information of the first antenna array, the first configuration information can not include the angular domain resolution of the first antenna array.

[0113] If the direction angle corresponding to the angular domain resolution of the first antenna array is a pre-defined default value, for example, 0 degrees, or the direction angle corresponding to the angular domain resolution of the first antenna array is the same as the direction angle corresponding to the angular domain resolution of the second antenna array, or the same as the direction angle corresponding to the angular domain resolution of an antenna array included in the second sensing system, the first configuration information can not include the direction angle corresponding to the angular domain resolution of the first antenna array.

[0114] If the terminal device can determine the included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array according to one or more of the following: predefined information, the included angle between the pointing direction of the second antenna array and the pointing direction of the antenna array included in the second perception system, the first configuration information can not include the included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array. For example, the included angle (including the horizontal included angle and / or the vertical included angle) between the pointing direction of the first antenna array and the pointing direction of the second antenna array is predefined, or the included angle between the pointing direction of the second antenna array and the pointing direction of the antenna array included in the second perception system is the same as the included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array, and the first configuration information can not include the included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array.

[0115] Optionally, the first configuration information can further include environmental perception result information acquired by the first perception system. The environmental perception result information can be used to indicate at least one horizontal angle and / or at least one vertical angle. For example, the at least one horizontal angle and / or the at least one vertical angle can be represented by at least one angle vector, in other words, the environmental perception result information can include at least one angle vector.

[0116] For example, as shown in FIG. 5, taking the perception device in the first perception system as the center, the direction parallel to the ground is set as the X axis, the direction perpendicular to the ground is set as the Z axis, and the direction parallel to the ground and perpendicular to the X axis is set as the Y axis. The vector from the perception device in the first perception system to a terminal device in the coverage range of the first perception system is The included angle between the vector and the Z axis is a vertical angle θ, and the projection of the vector on the ground has an included angle with the X axis, which is a horizontal angle φ. Therefore, the environmental perception result information can indicate the angle θ and / or the angle φ in FIG. 5.

[0117] Optionally, the first configuration information can further include the identifier or index of the first perception system.

[0118] The embodiments of the present application do not limit the manner in which the network device sends the at least one configuration information. For example, the network device can send the at least one configuration information through high layer signaling (for example, RRC message).

[0119] Optionally, the method 400 further includes S402.

[0120] S402, the network device sends first indication information.

[0121] Correspondingly, the terminal device receives the first indication information.

[0122] The first indication information is used to indicate one or more of the following: the measurement manner of the expected communication quality corresponding to the at least one perception system, or the communication quality threshold. ​

[0123] For example, the at least one sensing system corresponds to a measurement manner of the expected communication quality, and the measurement manner of the expected communication quality is one or more of the following: a measurement manner through a spectrum efficiency, or a measurement manner through a throughput rate. It can be understood that, if the measurement manner of the expected communication quality corresponding to the at least one sensing system is predefined or preconfigured, the first indication information can not indicate the measurement manner of the expected communication quality corresponding to the at least one sensing system.

[0124] The expected communication quality corresponding to the sensing system refers to an expected communication quality when the downlink MIMO transmission is performed through the sensing system, or an expected communication quality when the downlink MIMO transmission is performed through the precoding matrix corresponding to the sensing system, and the precoding matrix corresponding to the sensing system is determined according to the environment sensing result information obtained through the sensing system. It can be understood that, when the downlink MIMO transmission is performed through the precoding matrix corresponding to the sensing system, the network device can send the downlink signal precoded through the precoding matrix corresponding to the sensing system to the terminal device.

[0125] The communication quality threshold is used to determine whether the at least one sensing system is available. The manner in which the communication quality threshold is used to determine whether the at least one sensing system is available can refer to the description in S403 below.

[0126] It can be understood that, if the communication quality threshold is predefined or preconfigured, the first indication information can not indicate the communication quality threshold. Alternatively, the terminal device determines whether the at least one sensing system is available through the communication quality of the current system, and the first indication information can not indicate the communication quality threshold. The manner in which the terminal device determines whether the at least one sensing system is available through the communication quality of the current system can refer to the description in S403 below.

[0127] It should be noted that the execution order of S401 and S402 is not limited in the embodiments of the present application, in other words, S401 can be executed before or after S402, or S401 and S402 can be executed simultaneously. In the case of simultaneous execution of S401 and S402, the at least one configuration information and the first indication information sent by the network device can be carried in the same message, for example, after the terminal device accesses the cell, the network device sends the at least one configuration information and the first indication information to the terminal device through RRC signaling.

[0128] S403, the terminal device determines the available sensing system according to the at least one configuration information.

[0129] The manner in which the terminal device determines whether the sensing system is available will be described below by taking a first sensing system in the at least one sensing system as an example. It should be immediately understood that the terminal device can determine whether each sensing system in the at least one sensing system is available in the following manner.

[0130] In a possible implementation, the manner in which the terminal device determines whether the first sensing system is available can include the following steps: determining, according to the first configuration information and the second precoding matrix, a first precoding matrix corresponding to the first sensing system; determining, according to the first precoding matrix, an expected communication quality corresponding to the first sensing system; and determining whether the first sensing system is available by comparing the expected communication quality corresponding to the first sensing system with a communication quality threshold, or by comparing the expected communication quality corresponding to the first sensing system with a communication quality of the current system.

[0131] The second precoding matrix is described as follows.

[0132] For example, the second precoding matrix is a precoding matrix determined by the terminal device by measuring a downlink channel of the current system. The manner in which the terminal device determines the second precoding matrix by measuring the downlink channel of the current system can include the following steps: the terminal device receives a downlink reference signal from the network device; and the terminal device determines the second precoding matrix according to the downlink reference signal. It can be understood that, in the embodiments of the present application, the downlink reference signal sent by the network device can be used to determine the available sensing system.

[0133] The downlink reference signal can be a precoded reference signal or an unprecoded reference signal, which is not limited in the present application. The manner in which the terminal device determines the second precoding matrix according to the downlink reference signal can refer to the prior art. For example, the second precoding matrix determined by the terminal device is obtained by singular value decomposition (SVD) of a downlink channel matrix, and the downlink channel matrix is determined according to the downlink reference signal. For another example, if the current system is a sensing system, the second precoding matrix determined by the terminal device is determined according to the downlink channel matrix and environmental sensing result information (denoted as environmental sensing result information #1) obtained through the current system. For example, if the environmental sensing result information #1 includes at least one angle vector, the terminal device can determine the second precoding matrix by mapping the downlink channel matrix onto a spatial domain codebook corresponding to the current system, and the spatial domain codebook corresponding to the current system is composed of the at least one angle vector included in the environmental sensing result information #1.

[0134] For example, when the first configuration information includes the environment perception result information (denoted as environment perception result information #2) obtained by the first perception system, the second precoding matrix can be a precoding matrix determined by the terminal device according to the downlink channel of the current system and the environment perception result information #2. For example, if the environment perception result information #2 includes at least one angle vector, the terminal device can determine the second precoding matrix by mapping the downlink channel matrix to the spatial domain codebook corresponding to the first perception system, and the spatial domain codebook corresponding to the first system is composed of at least one angle vector included in the environment perception result information #2. The second precoding matrix determined by the terminal device according to the downlink signal of the current system and the environment perception result information #2 can be equivalent to the angle information corresponding to the effective multipath extracted from the environment perception result information #2.

[0135] The following describes a manner in which the terminal device determines the first precoding matrix according to the first configuration information and the second precoding matrix.

[0136] For example, the terminal device first determines the angle domain resolution of the first antenna array according to the first configuration information, and determines the included angle (including the horizontal included angle and / or the vertical included angle) between the pointing direction of the first antenna array and the pointing direction of the second antenna array, and then determines the first precoding matrix according to the angle domain resolution of the first antenna array, the included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array, and the second precoding matrix.

[0137] The embodiments of the present application do not limit the manner in which the terminal device determines the second precoding matrix according to the angle domain resolution of the first antenna array, the included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array, and the first precoding matrix, for example, the first precoding matrix determined by the terminal device can have the following relationship with the angle domain resolution of the first antenna array, the included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array, and the second precoding matrix, as shown in formula 1.

[0138] Formula 1: Δφ k = cos (φ0+α) / cos (φ0) * R k = cos (φ0+α) / cos (φ0) * R H Formula 1.7; Δθ k = cos (θ0+β) / cos (θ0) * R k = cos (θ0+β) / cos (θ0) * R V Formula 1.8.

[0139] where V k is the vector direction of the beam k contained in the second precoding matrix, with a dimension of N H ×N V , N H is the number of horizontal antenna ports of the second antenna array, and N VThe number of vertical antenna ports of the second antenna array. The horizontal and vertical vector directions of the beam k contained in the second precoding matrix, respectively. The horizontal and vertical vector directions of the beam k contained in the second precoding matrix, respectively. k The horizontal and vertical pointing angles of the beam k contained in the second precoding matrix, respectively. k The horizontal and vertical pointing angles of the beam k contained in the second precoding matrix, respectively. H The horizontal and vertical pointing angles of the beam k contained in the second precoding matrix, respectively. V The horizontal and vertical pointing angles of the beam k contained in the second precoding matrix, respectively. The vector direction of the beam k in the first precoding matrix with a band error, The horizontal and vertical vector directions of the beam k in the first precoding matrix with a band error, respectively. The horizontal and vertical vector directions of the beam k in the first precoding matrix with a band error, respectively. k The horizontal and vertical vector directions of the beam k in the first precoding matrix with a band error, respectively. k The horizontal and vertical pointing angle deviations between the beam k in the first precoding matrix and the beam k in the second precoding matrix, respectively. The projection angles of the included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array in the horizontal and vertical directions, respectively. H The projection angles of the included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array in the horizontal and vertical directions, respectively. V The horizontal and vertical angle domain resolutions of the first antenna array, respectively. The direction angles corresponding to the horizontal and vertical angle domain resolutions of the first antenna array, respectively. The vector direction of the beam k contained in the first precoding matrix or the second precoding matrix can also be referred to as the angle vector corresponding to the beam k.

[0140] It should be understood that the second precoding matrix can include the vector directions of K beams, and the dimension of the second precoding matrix can be N H ×N V ×K. Correspondingly, the first precoding matrix can include the vector directions of K beams. The value of K can be preconfigured or protocol predefined, or indicated by the network device to the terminal device, which is not limited in the present application.

[0141] It can be understood that if the first configuration information includes the angle domain resolution of the first antenna array, the terminal device can directly obtain the angle domain resolution of the first antenna array from the first configuration information. Or, if the first configuration information includes the array structure information of the first antenna array, the terminal device can determine the angle domain resolution of the first antenna array according to the array structure information of the first antenna array. The present application embodiment does not limit the way in which the terminal device determines the angle domain resolution of the first antenna array according to the array structure information of the first antenna array, for example, the angle domain resolution of the first antenna array determined by the terminal device has the following formula 2 relationship with the array structure information of the first antenna array.

[0142] Formula 2:

[0143] wherein R H and R V are the angular domain resolution in horizontal and vertical direction of the first antenna array, respectively, in radian, and a and b are the directional angles corresponding to the horizontal and vertical angular domain resolution of the first antenna array, respectively. is the number of antenna ports in horizontal direction of the first antenna array, is the number of antenna ports in vertical direction of the first antenna array. is the interval in horizontal direction of any two adjacent antenna elements included in the first antenna array, is the interval in vertical direction of any two adjacent antenna elements included in the first antenna array.

[0144] It can also be understood that if the first configuration information includes the included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array, the terminal device can directly obtain the included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array from the first configuration information. If the first configuration information does not include the included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array, the terminal device can determine the included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array according to one or more of the following: predefined information, the included angle between the pointing direction of the second antenna array and the pointing direction of the antenna array included in the second sensing system. For example, the included angle between the pointing direction of the first antenna array and the pointing direction of the second antenna array is predefined, or the included angle between the pointing direction of the second antenna array and the pointing direction of the antenna array included in the second sensing system is the same.

[0145] The following describes the manner in which the terminal device determines the expected communication quality corresponding to the first sensing system according to the first precoding matrix.

[0146] For example, if the manner of measuring the communication quality is to measure the spectral efficiency, the expected spectral efficiency (SE) corresponding to the first sensing system determined by the terminal device and the first precoding matrix can have the following formula 3.

[0147] Formula 3: SE = ålog2(1 + SINR s ), s = 1, 2, …, RANK Formula 3.1; SINR s = |W(:, s) * H * HW(:, s)| / (å(|W(:, p * H * HW(:, p)|) + N0), p ≠ s Formula 3.2.

[0148] where H denotes a downlink channel, W denotes a first precoding matrix, W(:,s) denotes an s-th column of the first precoding matrix, N0 denotes background noise, and RANK denotes a number of data streams selected by the terminal device. SINR s denotes an s-th column of the first precoding matrix. W(:,s) * denotes a transpose of W(:,s), H * denotes a transpose of H.

[0149] A manner in which the terminal device determines whether the first sensing system is available according to the expected communication quality corresponding to the first sensing system is described below.

[0150] For example, the terminal device determines whether the first sensing system is available by comparing the expected communication quality corresponding to the first sensing system with a communication quality threshold.

[0151] For example, if the expected communication quality corresponding to the first sensing system is greater than or equal to the communication quality threshold, the terminal device determines that the first sensing system is available. Alternatively, if the expected communication quality corresponding to the first sensing system is less than or equal to the communication quality threshold, the terminal device determines that the first sensing system is unavailable.

[0152] For example, the terminal device determines whether the first sensing system is available by comparing the expected communication quality corresponding to the first sensing system with a communication quality threshold.

[0153] For example, if the expected communication quality corresponding to the first sensing system is greater than or equal to the communication quality threshold, the terminal device determines that the first sensing system is available. Alternatively, if the expected communication quality corresponding to the first sensing system is less than or equal to the communication quality threshold, the terminal device determines that the first sensing system is unavailable.

[0154] For example, if the expected communication quality corresponding to the first sensing system is greater than or equal to the communication quality threshold, the terminal device determines that the first sensing system is available. Alternatively, if the expected communication quality corresponding to the first sensing system is less than or equal to the communication quality threshold, the terminal device determines that the first sensing system is unavailable.

[0155] For example, if the expected communication quality corresponding to the first sensing system is greater than or equal to the communication quality threshold, the terminal device determines that the first sensing system is available. Alternatively, if the expected communication quality corresponding to the first sensing system is less than or equal to the communication quality threshold, the terminal device determines that the first sensing system is unavailable.

[0156] The communication quality of the current system is determined by the terminal device according to a second precoding matrix, and the second precoding matrix is a precoding matrix determined by measuring a downlink channel of the current system. The manner in which the terminal device determines the communication quality of the current system according to the second precoding matrix can be used as a reference for the manner in which the terminal device determines the expected communication quality of the first perception system according to the first precoding matrix.

[0157] In a possible implementation, the manner in which the terminal device determines whether the first perception system is available can include the following steps: determining an angular domain resolution of an antenna array used by the current system according to array structure information of the antenna array used by the current system; and determining whether the first perception system is available by comparing the angular domain resolution of the first antenna array with the angular domain resolution of the antenna array used by the current system.

[0158] The manner in which the terminal device determines the angular domain resolution of the antenna array used by the current system according to the array structure information of the antenna array used by the current system can be used as a reference for the manner in which the terminal device determines the angular domain resolution of the first antenna array according to the array structure information of the first antenna array.

[0159] The manner in which the terminal device determines whether the first perception system is available is as follows: if the angular domain resolution of the first antenna array is greater than or equal to the angular domain resolution of the antenna array used by the current system, the terminal device determines that the first perception system is available; or if the angular domain resolution of the first antenna array is less than or equal to the angular domain resolution of the antenna array used by the current system, the terminal device determines that the first perception system is unavailable.

[0160] Optionally, the method 400 further includes S404.

[0161] S404: The terminal device sends second indication information.

[0162] Correspondingly, the network device receives the second indication information.

[0163] The second indication information is used to indicate at least one available perception system. For example, the second indication information can include an identifier and / or an index corresponding to each of the at least one available perception system.

[0164] Optionally, the second indication information is further used to indicate an expected communication quality corresponding to the at least one available perception system. For example, the second indication information can include the expected communication quality corresponding to each of the at least one available perception system, or can include a difference or a ratio between the expected communication quality corresponding to each of the at least one available perception system and the communication quality of the current system.

[0165] It can be understood that after receiving the second indication information, the network device can determine the at least one available sensing system according to the second indication information. Optionally, the network device can also determine the expected communication quality corresponding to the at least one available sensing system according to the second indication information.

[0166] Optionally, the method 400 further includes S405.

[0167] S405, the network device sends a downlink signal.

[0168] Correspondingly, the terminal device receives the downlink signal.

[0169] The downlink signal is a downlink signal precoded by a third precoding matrix.

[0170] The third precoding matrix corresponds to one of the at least one available sensing system. For example, the third precoding matrix corresponds to the sensing system with the highest expected communication quality in the at least one available sensing system.

[0171] Taking the third precoding matrix corresponding to the sensing system #1 in the at least one available sensing system as an example, the third precoding matrix is determined by the network device according to the environmental sensing result information obtained by the sensing system #1. The network device determines the third precoding matrix in the manner of the prior art, which is not limited in the present application.

[0172] In the embodiments of the present application, the terminal device can determine the available sensing system in the at least one sensing system according to the configuration information of the at least one sensing system, so as to avoid the decline of the communication quality caused by the terminal device and the network device using the unavailable sensing system for communication. In addition, the terminal device indicates the at least one available sensing system to the network device, so as to realize the flexible and efficient selection of the downlink MIMO transmission mode on the network device side.

[0173] The beneficial effects of the embodiments of the present application will be described below in combination with FIG. 6. FIG. 6 is obtained based on the simulation parameters shown in Table 1.

[0174] Table 1

[0175] Fig. 6(a) is a simulation result of user perceived throughput (UPT) corresponding to different precoding schemes. The simulation result of Fig. 6(a) is obtained based on file transfer protocol 3 (FTP3). Wherein, UPT1 is datasize / delay1, datasize represents total amount of data to be transmitted, the total amount of data is 0.1 MBytes, delay1 represents total time of scheduling terminal device at the base station side, UPT2 is datasize / delay2, delay2 represents total time of transmitting data at the terminal device, interval of transmitting data at the terminal device is 200 ms. Baseline (BL) [4RB] represents a scheme of precoding with 4RB precoding granularity in a non-sensing system (i.e. a scheme of precoding at the base station according to CSI fed back by the terminal device), BL [wideband (WB)] represents a scheme of precoding with full-band precoding granularity in a non-sensing system, sensing assisted (SA) [G1] [WB1] [CSI1] and SA [G3] [WB1] [CSI1] respectively represent two schemes of precoding based on sensing system information, G1 and G3 respectively represent two different sensing systems, or represent schemes corresponding to two different combinations of sensing parameters. As can be seen from Fig. 6(a), the scheme of precoding based on sensing system information can obtain higher UPT.

[0176] Fig. 6(b) is a simulation result of normalized UE throughput (THP) corresponding to different precoding schemes. G1 [WB1] [CSI minimum mean square error (MMSE)] and G7 [WB1] [CSI MMSE] respectively represent two schemes of precoding based on sensing system information, G1 and G7 respectively represent two different sensing systems, or represent schemes corresponding to two different combinations of sensing parameters. As can be seen from Fig. 6(b), the throughput obtained by the scheme of precoding based on sensing system information is similar to the throughput obtained by the scheme of precoding with 4RB precoding granularity in a non-sensing system, and is higher than the throughput obtained by the scheme of precoding with full-band precoding granularity.

[0177] It can be understood that some optional features of the embodiments of the present application can not depend on other features in some scenarios, or can be combined with other features in some scenarios, without limitation.

[0178] It can also be understood that the solutions in the embodiments of the present application can be reasonably combined, and the explanation or description of each term appearing in the embodiments can be mutually referenced or explained in various embodiments, and this is not limited.

[0179] It can also be understood that the methods and operations implemented by the devices (such as terminal devices and network devices) in each of the above method embodiments can also be implemented by components (such as chips or circuits) of the devices, and this is not limited.

[0180] The above describes the method provided by the embodiments of the present application in detail in combination with FIG. 4. The following describes the apparatus provided by the embodiments of the present application in combination with FIG. 7 to FIG. 9. It should be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments, and therefore, the content not described in detail can be referred to the above method embodiments, and for brevity, the description is not repeated here.

[0181] Referring to FIG. 7, FIG. 7 is a schematic diagram of a communication apparatus 700 provided by an embodiment of the present application. The apparatus 700 includes a transceiver unit 710. The transceiver unit 710 can be used to implement corresponding communication functions. The transceiver unit 710 can also be referred to as a communication interface or a communication unit. Optionally, the apparatus 700 further includes a processing unit 720. The processing unit 720 can be used to perform processing, such as beam measurement. The functions of the processing unit 720 can be implemented by one or more processors. Specifically, the processor can include a modem chip, or a system on chip (SoC) chip or a SIP chip containing a modem core.

[0182] Optionally, the apparatus 700 can further include a storage unit, which can be used to store instructions and / or data. The processing unit 720 can read the instructions and / or data in the storage unit, so that the apparatus implements the foregoing method embodiments.

[0183] Optionally, the transceiver unit 710 can include a receiving unit and a sending unit. The receiving unit can be used to perform receiving related operations (such as operations of receiving data or messages), and the sending unit can be used to perform sending related operations (such as operations of sending data or messages).

[0184] In a first possible design, the apparatus 700 can be a terminal device in the foregoing embodiments, and the apparatus 700 can implement steps or procedures corresponding to those performed by the terminal device in the foregoing method embodiments. The transceiver 710 can be configured to perform operations related to transceiving (e.g., operations of transmitting and / or receiving data or messages) of the terminal device in the foregoing method embodiments, such as the steps S401, S402, S404 and S405 in the embodiment of FIG. 4. The processor 720 can be configured to perform operations related to processing of the terminal device in the foregoing method embodiments, or operations other than transceiving (e.g., operations other than transmitting and / or receiving data or messages), such as the step S403 in the embodiment of FIG. 4.

[0185] In a possible implementation, the transceiver 710 can be configured to receive at least one configuration information, the at least one configuration information corresponding to at least one perception system one-to-one, the at least one configuration information including first configuration information, the at least one perception system including a first perception system corresponding to the first configuration information, the first configuration information being used to determine whether the first perception system is available. The processor 720 can be configured to determine available perception systems from the at least one perception system according to the at least one configuration information.

[0186] In a second possible design, the apparatus 700 can be a network device in the foregoing embodiments, and the apparatus 700 can implement steps or procedures corresponding to those performed by the network device in the foregoing method embodiments. The transceiver 710 can be configured to perform operations related to transceiving (e.g., operations of transmitting and / or receiving data or messages) of the network device in the foregoing method embodiments, such as the steps S401, S402, S404 and S405 in the embodiment of FIG. 4. The processor 720 can be configured to perform operations related to processing of the network device in the foregoing method embodiments, or operations other than transceiving (e.g., operations other than transmitting and / or receiving data or messages).

[0187] In a possible implementation, the transceiver 710 can be configured to transmit at least one configuration information, the at least one configuration information corresponding to at least one perception system one-to-one, the at least one configuration information including first configuration information, the at least one perception system including a first perception system corresponding to the first configuration information, the first configuration information being used to determine whether the first perception system is available. The transceiver 710 can be further configured to receive second indication information, the second indication information being used to indicate at least one available perception system, the at least one available perception system being determined according to the at least one configuration information.

[0188] It should be understood that the specific process in which each unit performs the corresponding steps described above has been described in detail in the foregoing method embodiments, and thus will not be described herein again for brevity.

[0189] It should also be understood that the apparatus 700 is embodied in the form of a functional block diagram. The term "unit" herein can refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (for example, a shared processor, a dedicated processor, or a group processor, etc.) and a memory for executing one or more software or firmware programs, a combination of logic circuitry and / or other suitable components that support the described functions. In an optional example, those skilled in the art can understand that the apparatus 700 can be embodied in the communication device in the above-mentioned embodiments, and can be used to execute the processes and / or steps corresponding to the communication device in each of the above-mentioned method embodiments. To avoid repetition, details are not described here.

[0190] The apparatus 700 of each of the above-mentioned schemes has a function of implementing the corresponding steps performed by the communication device in the above-mentioned methods. The function can be implemented by hardware or by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the transceiver unit can be replaced by a transceiver (for example, the transmitting unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor, which respectively performs the transceiving operation and the related processing operation in each of the method embodiments.

[0191] In addition, the transceiver unit 710 can also be a transceiver circuit (for example, which can include a receiving circuit and a transmitting circuit), and the processing unit 720 can be a processing circuit.

[0192] It should be noted that the apparatus in FIG. 7 can be a communication device in the above-mentioned embodiments, or a chip or a chip system, for example, a system on chip (SoC). The transceiver unit can be an input / output circuit, a communication interface; and the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip. Here, no limitation is made.

[0193] Referring to FIG. 8, FIG. 8 is a schematic diagram of another communication apparatus 800 provided by the embodiments of the present application. The apparatus 800 includes a processor 810, and the processor 810 is coupled with a memory 820, the memory 820 is used to store computer programs or instructions and / or data, and the processor 810 is used to execute the computer programs or instructions stored in the memory 820, or read the data stored in the memory 820, to perform the methods in the above-mentioned method embodiments.

[0194] Optionally, the processor 810 is one or more.

[0195] Optionally, the memory 820 is one or more.

[0196] Optionally, the memory 820 is integrated with the processor 810, or is separately arranged.

[0197] Optionally, as shown in FIG. 8, the apparatus 800 further includes a transceiver 830 including a receiver and / or a transmitter, for receiving and / or sending signals. For example, the processor 810 is configured to control the transceiver 830 to receive and / or send signals.

[0198] For example, the processor 810 can have the function of the processing unit 720 shown in FIG. 7, the memory 820 can have the function of a storage unit, and the transceiver 830 can have the function of the transceiving unit 710 shown in FIG. 7.

[0199] As an example, the apparatus 800 is configured to implement operations performed by a communication apparatus in the various method embodiments.

[0200] For example, the processor 810 is configured to execute computer programs or instructions stored in the memory 820, to implement the related operations of a terminal device or a network device in the various method embodiments.

[0201] It should be understood that the processor mentioned in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0202] It should also be understood that the memory referred to in the embodiments of the application can be a volatile memory and / or a non-volatile memory. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM). For example, the RAM can be used as an external cache. As an example but not limitation, the RAM includes the following various forms: static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).

[0203] It should be noted that when the processor is a general processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated in the processor.

[0204] It should also be noted that the memory described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0205] It should also be noted that if the device 800 includes the processor 810, the device 800 can be a chip, a chip system or a circuit. If the device 800 further includes the transceiver 830, the transceiver 830 can be a transceiver interface of the device for performing the actions of receiving or transmitting, which can include a receiving interface for performing the action of receiving and a transmitting interface for performing the action of transmitting. The transceiver 830 can be an input and output interface of the chip or chip system. If the device 800 further includes the memory 820, the device 800 can be a communication module.

[0206] Referring to FIG. 9, FIG. 9 is a schematic diagram of a chip system 900 according to an embodiment of the present application. The chip system 900 (or also referred to as a processing system) includes a logic circuit 910 and an input / output interface 920.

[0207] The logic circuit 910 can be a processing circuit in the chip system 900. The logic circuit 910 can be coupled to a storage unit, and invoke instructions in the storage unit, so that the chip system 900 can implement the methods and functions of the embodiments of the present application. The input / output interface 920 can be an input / output circuit in the chip system 900, and output information processed by the chip system 900, or input data or signaling information to be processed by the chip system 900.

[0208] Optionally, the logic circuit 910 can be implemented by one or more processors, including the one or more processors or processing portions in the one or more processors.

[0209] Optionally, the input / output interface 920 can include a transceiver, a transceiver, an input / output circuit or a communication interface.

[0210] As an option, the chip system 900 is configured to implement operations performed by a communication apparatus (e.g., a terminal device, or a network device) in the above method embodiments.

[0211] For example, the logic circuit 910 is configured to implement processing-related operations performed by a communication apparatus (e.g., a terminal device, or a network device) in the above method embodiments; and the input / output interface 920 is configured to implement sending and / or receiving-related operations performed by a communication apparatus (e.g., a terminal device, or a network device) in the above method embodiments.

[0212] The embodiments of the present application also provide a computer readable storage medium, which stores computer instructions for implementing the method performed by a communication apparatus (e.g., a terminal device, or a network device) in the above method embodiments.

[0213] For example, the computer program is executed by a computer, so that the computer can implement the method performed by a communication apparatus (e.g., a terminal device, or a network device) in the above method embodiments.

[0214] The embodiments of the present application also provide a computer program product, which includes instructions executed by a computer to implement the method performed by a communication apparatus (e.g., a terminal device, or a network device) in the above method embodiments.

[0215] The embodiments of the present application further provide a communication system, which comprises the terminal device and / or the network device in the above embodiments. For example, the system comprises the terminal device and the network device in FIG. 4.

[0216] The explanations and beneficial effects of the related contents in any of the above-provided devices can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0217] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units or components shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0218] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable apparatus. For example, the computer can be a personal computer, a server, a network device, etc. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transferred from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media sets. The available media can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD), etc. For example, the foregoing available media includes but is not limited to: a variety of media that can store program codes such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0219] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: The method comprises: receiving at least one configuration information, the at least one configuration information corresponding to at least one perception system, the at least one configuration information comprising first configuration information, the at least one perception system comprising a first perception system corresponding to the first configuration information, the first configuration information being used to determine whether the first perception system is available; determining available perception systems from the at least one perception system according to the at least one configuration information.

2. The method of claim 1, wherein, The first perception system comprises a first antenna array, and the first configuration information comprises one or more of the following: a number of horizontal directional antenna ports of the first antenna array, a number of vertical directional antenna ports of the first antenna array, a horizontal interval between any two adjacent antenna elements included in the first antenna array, a vertical interval between any two adjacent antenna elements included in the first antenna array, an angular domain resolution of the first antenna array, a direction angle corresponding to the angular domain resolution of the first antenna array, or an included angle between a pointing direction of a second antenna array and a pointing direction of the first antenna array, wherein the second antenna array is a currently used antenna array.

3. The method according to claim 1 or 2, characterized in that, The first configuration information further comprises environmental perception result information obtained by the first perception system.

4. The method according to any one of claims 1 to 3, characterized in that, The method further comprises: receiving first indication information, the first indication information being used to indicate one or more of the following: a measurement manner of an expected communication quality corresponding to the at least one perception system, or a communication quality threshold value.

5. The method according to any one of claims 1 to 4, characterized in that, The determining of the available perception systems from the at least one perception system according to the at least one configuration information comprises: determining a first precoding matrix corresponding to the first perception system according to the first configuration information and a second precoding matrix, the second precoding matrix being related to a downlink channel of a current system; determining an expected communication quality corresponding to the first perception system according to the first precoding matrix; if the expected communication quality corresponding to the first perception system is greater than or equal to the communication quality threshold value, or the expected communication quality corresponding to the first perception system is greater than or equal to a communication quality corresponding to the current system, determining that the first perception system is an available perception system; or if the expected communication quality corresponding to the first perception system is less than or equal to the communication quality threshold value, or the expected communication quality corresponding to the first perception system is less than or equal to the communication quality corresponding to the current system, determining that the first perception system is not an available perception system.

6. The method of claim 5, wherein, The second precoding matrix is determined according to the downlink channel of the current system, or the second precoding matrix is determined according to the downlink channel of the current system and environmental perception result information obtained by the first perception system.

7. The method according to any one of claims 1 to 4, characterized in that, The determining of the available perception systems from the at least one perception system according to the at least one configuration information comprises: determining an angular domain resolution of a first antenna array included in the first perception system according to the first configuration information; If the angle domain resolution of the first antenna array is greater than or equal to the angle domain resolution of a second antenna array currently used by the system, the first sensing system is determined as a usable sensing system; or If the angle domain resolution of the first antenna array is less than or equal to the angle domain resolution of the second antenna array currently used by the system, the first sensing system is determined as a non-usable sensing system.

8. The method according to any one of claims 1 to 7, characterized in that, The method further includes: sending second indication information, the second indication information being used to indicate at least one usable sensing system.

9. The method of claim 8, wherein, The second indication information is further used to indicate an expected communication quality corresponding to the at least one usable sensing system.

10. The method according to claim 8 or 9, characterized in that, The method further includes: receiving a downlink signal precoded by a third precoding matrix, the third precoding matrix corresponding to one of the at least one usable sensing system.

11. A communication method, comprising: comprising: sending at least one configuration information, the at least one configuration information corresponding to at least one sensing system one by one, the at least one configuration information including first configuration information, the at least one sensing system including a first sensing system corresponding to the first configuration information, the first configuration information being used to determine whether the first sensing system is usable; receiving second indication information, the second indication information being used to indicate at least one usable sensing system in the at least one sensing system.

12. The method of claim 11, wherein, The first sensing system includes a first antenna array, and the first configuration information includes one or more of the following: a number of horizontal directional antenna ports of the first antenna array, a number of vertical directional antenna ports of the first antenna array, a spacing of any two adjacent antenna elements included in the first antenna array in a horizontal direction, a spacing of any two adjacent antenna elements included in the first antenna array in a vertical direction, an angle domain resolution of the first antenna array, a direction angle corresponding to the angle domain resolution of the first antenna array, or an included angle between a pointing direction of a second antenna array and a pointing direction of the first antenna array; wherein the second antenna array is a currently used antenna array.

13. The method according to claim 11 or 12, characterized in that, The first configuration information further includes environment sensing result information obtained by the first sensing system.

14. The method according to any one of claims 11 to 13, characterized in that, The method further includes: sending first indication information, the first indication information being used to indicate one or more of the following: a measurement manner of an expected communication quality corresponding to the at least one sensing system, or a communication quality threshold.

15. The method according to any one of claims 11 to 14, characterized in that, The second indication information is further used to indicate an expected communication quality corresponding to the at least one usable sensing system.

16. The method according to any one of claims 11 to 15, characterized in that, The method further includes: sending a downlink signal precoded by a third precoding matrix, the third precoding matrix corresponding to one of the at least one usable sensing system.

17. A communications device, characterized by comprising a module or unit for performing the method of any one of claims 1 to 10, or a module or unit for performing the method of any one of claims 11 to 16.

18. A communications device, characterized by comprising at least one processor configured to execute computer programs or instructions to cause the apparatus to perform the method of any one of claims 1 to 10, or to cause the apparatus to perform the method of any one of claims 11 to 16.

19. A computer-readable storage medium, characterized in that, The computer readable storage medium has stored thereon computer programs or instructions that, when executed on a communication apparatus or computer, cause the communication apparatus to perform the method of any one of claims 1 to 10, or cause the communication apparatus to perform the method of any one of claims 11 to 16.

20. A computer program product, characterised in that, The computer program product comprises computer programs or instructions for performing the method of any one of claims 1 to 10, or computer programs or instructions for performing the method of any one of claims 11 to 16.

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