Sensing method and communication apparatus

Abstract

The present application provides a sensing method and a communication apparatus. In the method, a processing node configures, for a sensing node, a time domain resource of a sensing signal that is repeatedly transmitted in one frame; configuration information is determined on the basis of a sensing area of the sensing node; a duration Tpulse of a single sensing signal indicated by the configuration information makes an echo signal of a first sensing signal in a minimum reflection path arrive after the first sensing signal in a line-of-sight is received, and a time interval Tgap between adjacent sensing signals indicated by the configuration information makes an echo signal of a second sensing signal in the minimum reflection path arrive after the echo signal of the first sensing signal in a maximum reflection path is received, wherein the minimum / maximum reflection path and the line-of-sight are propagation paths of sensing signals in the sensing area, the first sensing signal is sent earlier than the second sensing signal, and the two signals are adjacent signals. The method can take into account both self-interference suppression and SNR gain of a sensing signal.

Description

Sensing methods and communication devices

[0001] This application claims priority to Chinese Patent Application No. 202410802565.5, filed on June 19, 2024, entitled "Sensing Method and Communication Apparatus", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communications, and more specifically, to a sensing method and a communication device. Background Technology

[0003] In a sensing scenario, when the length c*T of the sensing signal is greater than the length difference Δd between the reflection path and the line of sight (LOS) path, the echo signal of the sensing signal in the reflection path will arrive before the sensing signal in the LOS path is completely received, thus causing the echo signal of the sensing signal to be affected by self-interference. Here, c is the speed of light and T is the transmission time of the sensing signal.

[0004] Therefore, in one possible implementation, self-interference of the sensing signal can be effectively suppressed by reducing its length. However, as the signal length shortens, the signal-to-noise ratio (SNR) gain of the sensing signal also decreases. For example, in a typical scenario using cellular networks for sensing, the sensing distance is on the order of ten to one hundred meters. If the influence of self-interference is suppressed by reducing the signal length, the excessively short signal length may result in insufficient SNR gain, thus affecting the sensing performance. Summary of the Invention

[0005] This application provides a sensing method and a communication device that can balance self-interference suppression and SNR gain of the sensed signal.

[0006] In a first aspect, a communication method is provided, which can be executed by a processing node. Unless otherwise specified, the term "processing node" in this application can refer to the processing node itself (e.g., a network device, a terminal device), a component in the processing node (e.g., a processor, a chip, or a chip system), or a logical module or software that can implement all or part of the functions of the processing node.

[0007] The method includes: receiving first region information, the first region information indicating the region that a first sensing node needs to sense; sending first configuration information, the first configuration information being used to configure temporal resources for a sensing signal that is repeatedly transmitted within a frame for the first sensing node, the first configuration information being determined based on the first region information, and the first configuration information indicating the duration T of a single sensing signal. pulseThe time interval T between two adjacent sensing signals gap , among which, T pulse This ensures that the echo signal of the first sensing signal in the minimum reflection path reaches T after the first sensing signal in the direct line of sight has been received. gap The echo signal of the second sensing signal in the minimum reflection path arrives after the echo signal of the first sensing signal in the maximum reflection path has been received. The minimum reflection path, the maximum reflection path, and the line-of-sight path are the propagation paths of the sensing signals configured by the first configuration information in the sensing area indicated by the first area information. The first sensing signal and the second sensing signal are adjacent sensing signals configured by the first configuration information, and the transmission time of the first sensing signal is earlier than the transmission time of the second sensing signal.

[0008] It can be understood that the first sensing node is one of the multiple sensing nodes that need to perform sensing tasks.

[0009] In the above technical solution, firstly, This ensures that the echo signal of the first sensing signal in any of the multiple reflection paths is not affected by the first sensing signal in the direct line-of-sight path, thus preventing self-interference of the first sensing signal. Secondly, based on The constraints may lead to a shorter sensing signal length, resulting in a decrease in the SNR gain of the sensing signal. Therefore, this application can utilize the first configuration information to repeatedly transmit the same sensing signal, making full use of time resources and thereby improving the SNR gain of the sensing signal. Furthermore, since the first configuration information configures the repeated transmission of the sensing signal, this application can improve the SNR gain of the sensing signal by constraining T. gap This suppresses the interference between echo signals of adjacent sensing signals.

[0010] In some implementations of the first aspect, the first configuration information further indicates the total number of sampling points of all sense signals transmitted within a frame, wherein the first configuration information is determined based on the first region information and the signal-to-noise ratio (SNR) gain index corresponding to the first sense node, the SNR gain corresponding to the first configuration information is greater than or equal to the SNR gain value indicated by the SNR gain index, and the SNR gain corresponding to the first configuration information is determined based on the total number of sampling points of all sense signals transmitted within a frame.

[0011] In the above technical solution, the processing node can also determine the first configuration information based on the required SNR gain requirement, so that the SNR gain of the sensing signal configured by the first configuration information meets the required SNR gain requirement.

[0012] In some implementations of the first aspect, the method further includes: receiving first node parameters of the first sensing node, the first node parameters including the location information of the first sensing node; and determining the minimum reflection path, the maximum reflection path, and the direct line-of-sight path based on the first node parameters and the first region information.

[0013] In some implementations of the first aspect, the method further includes: receiving second region information and second node parameters corresponding to the second sensing node, wherein the second node parameters include the location information of the second sensing node, the first sensing node and the second sensing node are a set of transmitting sensing nodes and receiving sensing nodes in a dual-base sensing scenario, and the sensing regions indicated by the first region information and the second region information are the same; and determining the minimum reflection path, the maximum reflection path and the line-of-sight path based on the first node parameters, the second node parameters and the first region information.

[0014] In the above technical solution, if the first sensing node is a sensing node in a dual-base sensing scenario, then the second sensing node in the dual-base sensing scenario (i.e., another sensing node in the dual-base sensing scenario) can also send the second node parameters (i.e., the node parameters of the second sensing node) to the processing node. In this scenario, the processing node can further determine the minimum reflection path, maximum reflection path, and direct line-of-sight path of the first sensing node and the second sensing node in the sensing area indicated by the first area information based on the first node parameters, the second node parameters, and the first area information.

[0015] Secondly, the method can be executed by a sensing node. Unless otherwise specified, the "sensing node" in this application can refer to the sensing node itself (e.g., network device, terminal device), a component in the sensing node (e.g., processor, chip, or chip system), or a logic module or software that can implement all or part of the functions of the sensing node.

[0016] The method includes: sending first area information, the first area information indicating the area that a first sensing node needs to sense; receiving first configuration information, the first configuration information being used to configure temporal resources for a sensing signal that is repeatedly transmitted within a frame for the first sensing node, the first configuration information being determined based on the first area information, and the first configuration information indicating the duration T of a single sensing signal. pulse The time interval T between two adjacent sensing signals gap , among which, T pulse This ensures that the echo signal of the first sensing signal in the minimum reflection path reaches T after the first sensing signal in the direct line of sight has been received. gapThe echo signal of the second sensing signal in the minimum reflection path arrives after the echo signal of the first sensing signal in the maximum reflection path has been received. The minimum reflection path, maximum reflection path, and line-of-sight path are the propagation paths of the sensing signals configured by the first configuration information in the sensing area indicated by the first area information. The transmission time of the first sensing signal is earlier than the transmission time of the second sensing signal. Sensing measurement is performed based on the first configuration information.

[0017] It can be understood that the first sensing node is one of the multiple sensing nodes that need to perform sensing tasks.

[0018] For the beneficial effects of the second aspect, please refer to the description of the first aspect, which will not be repeated here.

[0019] In some implementations of the second aspect, the first configuration information further indicates the total number of sampling points of all sense signals repeatedly transmitted within a frame, wherein the first configuration information is determined based on the first region information and the signal-to-noise ratio (SNR) gain index corresponding to the first sense node, the SNR gain corresponding to the first configuration information is greater than or equal to the SNR gain value indicated by the SNR gain index, and the SNR gain corresponding to the first configuration information is determined based on the total number of sampling points of all sense signals transmitted within a frame.

[0020] In some implementations of the second aspect, the method further includes: sending first node parameters of the first sensing node, the first node parameters including the location information of the first sensing node, wherein the minimum reflection path, the maximum reflection path and the line-of-sight path are determined based on the first node parameters and the first region information.

[0021] In some implementations of the second aspect, the minimum reflection path, the maximum reflection path, and the line-of-sight path are determined based on the first node parameters and the first region information, including: the minimum reflection path, the maximum reflection path, and the line-of-sight path are determined based on the first node parameters, the second node parameters of the second sensing node, and the first region information, wherein the second node parameters include the position information of the second sensing node, the first sensing node and the second sensing node are respectively a set of transmitting sensing nodes and receiving sensing nodes in the dual-base sensing scenario, and the sensing areas of the first sensing node and the second sensing node are the same.

[0022] In some implementations of the first or second aspect, T gap The product of the speed of light c and the speed of light c is greater than or equal to the first difference, which is Δd. max Subtract Δd min The difference, where Δd max Δd is the length difference between the maximum reflection diameter and the direct viewing diameter. min T is the length difference between the minimum reflection diameter and the direct viewing diameter. pulse The product of the speed of light c and Δd is less than or equal to Δd. min .

[0023] It should be noted that in a dual-base sensing scenario, if the transmitting and receiving sensing nodes communicate via a one-to-one transmission and reception mechanism, there is only one LOS path between the two devices. However, if the transmitting and receiving sensing nodes communicate via a one-to-many transmission and reception mechanism, there are multiple LOS paths between the two devices. When multiple LOS paths exist, the aforementioned Δd... max Δd is the length difference between the maximum reflection path and the minimum LOS path among multiple LOS paths. min It is the length difference between the minimum reflection path and the maximum LOS path among multiple LOS paths.

[0024] In some implementations of the first or second aspect, the total number of sampling points of all sense signals transmitted within a frame This is equal to the sum of the number of sense signals repeatedly transmitted within a frame as configured in the first configuration information. The product of This represents the number of sampling points on a sensing signal.

[0025] In some implementations of the first or second aspect, the SNR gain of the sensed signal configured by the first configuration information is equal to 10 times.

[0026] In some implementations of the first or second aspect, the first configuration information includes at least one of three levels of configuration parameters, wherein the three levels of configuration parameters are configuration parameters corresponding to the time slot, symbol, and sub-symbol levels, respectively.

[0027] The configuration parameters corresponding to the time slot level include:

[0028] The configuration parameters corresponding to the symbol level include

[0029] The configuration parameters corresponding to the sub-symbol level include:

[0030] in,

[0031] Indicates the number of time slots available within a frame for transmitting sensing signals. Indicates the number of symbols available for transmitting sensing signals within a time slot. Indicates the number of sub-symbols within a symbol that can be used to transmit sensing signals.

[0032] These indicate the length of a time slot, the length of a symbol, and the length of a sub-symbol, respectively, where T pulse equal

[0033] Indicates the time interval between the start position of a frame and the new start position of a frame. Indicates the time interval between the start position of a time slot and the new start position of a time slot. Indicates the time interval between the starting position of a symbol and the new starting position of a symbol.

[0034] The time interval between the new start position of a frame and the start position of a set of time slots within a frame that can be used to transmit sensing signals. The time interval between the new start position of a time slot and the start position of a set of symbols available for transmission of sensing signals within a time slot. The time interval between the new starting position of a symbol and the starting position of a set of sub-symbols within a symbol that can be used to transmit sensing signals.

[0035] Indicates the time interval between two adjacent time slots in a set of time slots available for transmitting sensing signals within a frame. It indicates the time interval between two adjacent symbols in a set of symbols that can be used to transmit sensing signals within a time slot. Indicates the time interval between two adjacent sub-symbols within a set of sub-symbols that can be used to transmit sensing signals within a symbol.

[0036] Indicates the number of time slots in a time slot set. Indicates the number of symbols in a set of symbols. Indicates the number of subsymbols in a set of subsymbols.

[0037] It is understood that the first configuration information in the above technical solution includes three levels of configuration parameters, which are the configuration parameters corresponding to the time slot-symbol-sub-symbol levels. For example, a two-level configuration can also be implemented according to actual needs, with the three levels of configuration parameters corresponding to the time slot-symbol levels, such as the length of a single sensing signal being equal to the length of a symbol. Alternatively, a single-level configuration can be implemented, i.e., the sensing signal is configured at the time slot level, for example, the length of a single sensing signal being equal to the length of a time slot. This application does not specifically limit the configuration level of the first configuration information, as long as the configured first configuration information meets the above constraints.

[0038] Thirdly, a communication apparatus is provided for performing the method provided by any of the above aspects or their implementations. Specifically, the apparatus may include units and / or modules for performing the method provided by any of the above aspects or their implementations, such as processing units and / or transceiver units.

[0039] In one implementation, the device is a sensing node or a processing node. When the device is a sensing node or a processing node, the transceiver unit can be a transceiver, or an input / output interface, or a communication interface; the processing unit can be at least one processor. Optionally, the transceiver is a transceiver circuit. Optionally, the input / output interface is an input / output circuit.

[0040] In another implementation, the device is a chip, chip system, or circuit used in a sensing node or processing node. When the device is a chip, chip system, or circuit used in a sensing node or processing node, the transceiver unit can be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip, chip system, or circuit; the processing unit can be at least one processor, processing circuit, or logic circuit.

[0041] Fourthly, a communication device is provided, comprising: a memory for storing a program; and at least one processor for executing the computer program or instructions stored in the memory to perform the method provided in any of the foregoing aspects or their implementations.

[0042] In one implementation, the device is a sensing node or a processing node.

[0043] In another implementation, the device is a chip, chip system, or circuit used in a sensing node or processing node.

[0044] Fifthly, a communication device is provided, comprising: at least one processor and a communication interface, wherein the at least one processor is configured to obtain a computer program or instructions stored in a memory via the communication interface to execute the method provided in any of the foregoing aspects or their implementations. The communication interface may be implemented in hardware or software.

[0045] In one implementation, the device further includes the memory.

[0046] Sixthly, a processor is provided for executing the methods provided in the above aspects.

[0047] Unless otherwise specified, or if it does not contradict its actual function or internal logic in the relevant description, the transmission and acquisition / reception operations involved in the processor can be understood as processor output and reception, input and other operations, or as transmission and reception operations performed by radio frequency circuits and antennas. This application does not limit them in this regard.

[0048] In a seventh aspect, a computer-readable storage medium is provided that stores program code for execution by a device, the program code including methods for performing any of the foregoing aspects or their implementations.

[0049] Eighthly, a computer program product containing instructions is provided, which, when run on a computer, causes the computer to perform the method provided in any of the foregoing aspects or their implementations.

[0050] Ninthly, a chip is provided, comprising a processor and a communication interface. The processor reads instructions stored in a memory through the communication interface and executes the methods provided in any of the above aspects or their implementations. The communication interface can be implemented in hardware or software.

[0051] Optionally, as one implementation, the chip also includes a memory that stores computer programs or instructions. The processor is used to execute the computer programs or instructions stored in the memory. When the computer programs or instructions are executed, the processor is used to perform the methods provided by any of the above aspects or their implementations.

[0052] When the method provided in this application is executed by a chip, this application does not limit the specific number of chips implementing the method. For example, it can be executed by one chip, or by two or more chips. Furthermore, when the number of chips implementing the method is two or more, the chip manufacturers are not limited; they can be from the same manufacturer or different manufacturers.

[0053] In a tenth aspect, a communication system is provided, including the sensing node and processing node described above. Attached Figure Description

[0054] Figure 1 is a schematic diagram of a communication system applicable to an embodiment of this application.

[0055] Figure 2 is a schematic diagram of a single-base sensing scenario and a dual-base sensing scenario.

[0056] Figure 3 is a schematic diagram of the self-interference problem in a perception scenario.

[0057] Figure 4 is a schematic flowchart of a communication method 400 provided in this application.

[0058] Figure 5 is a schematic diagram of the time-domain resources of the sensing signal configured in the first configuration information.

[0059] Figures 6, 8, 10, and 12 are schematic diagrams of perception scenarios one, two, three, and four applicable to embodiments of this application, respectively.

[0060] Figures 7, 9, 11 and 13 are schematic flowcharts of possible perception methods based on perception scenarios one, two, three and four proposed in this application.

[0061] Figure 14 is a schematic block diagram of a communication device 1400 provided in an embodiment of this application.

[0062] Figure 15 is a schematic block diagram of the communication device 1500 provided in an embodiment of this application. Detailed Implementation

[0063] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0064] To facilitate understanding of the above embodiments provided in this application, the following points are made:

[0065] 1) In this application, unless otherwise specified or in case of logical conflict, the terms and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0066] 2) In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone, where A and B can be singular or plural. In the textual description of this application, the character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c can mean: a, or, b, or, c, or, a and b, or, a and c, or, b and c, or, a, b, and c. Here, a, b, and c can each be single or multiple.

[0067] 3) In the embodiments of this application, ordinal numbers such as "first" and "second" are used to distinguish multiple objects and are not used to limit the size, content, order, timing, priority, or importance of the multiple objects. For example, the first instruction information and the second instruction information can be the same information or different information, and such names do not indicate differences in the content, size, application scenario, sending / receiving end, priority, or importance of the two messages. In addition, the numbering of steps in the various embodiments described in this application is only to distinguish different steps and is not used to limit the order of steps.

[0068] 4) In this application, descriptions such as “when…”, “under the circumstances of…” and “if” all refer to the fact that the device will make corresponding processing under certain objective circumstances. They are not time limits, nor do they require the device to make a judgment action when it is implemented, nor do they mean that there are other limitations.

[0069] 5) In this application, "instruction" or "for instruction" can include both direct and indirect instruction. When describing an instruction as being used to instruct A, it may include whether the instruction directly instructs A or indirectly instructs A, but does not necessarily mean that the instruction carries A.

[0070] The indication methods involved in the embodiments of this application should be understood to cover various methods that enable the party to be indicated to obtain the information to be indicated. The information to be indicated can be sent as a whole or divided into multiple sub-information and sent separately. Moreover, the sending period and / or sending time of these sub-information can be the same or different. This application does not limit the sending method, for example.

[0071] The "instruction information" in the embodiments of this application can be an explicit instruction, that is, a direct instruction through signaling, or an instruction obtained by combining other rules or parameters with the parameters indicated by the signaling, or by deduction. It can also be an implicit instruction, that is, an instruction obtained based on rules or relationships, or based on other parameters, or by deduction. This application does not specifically limit it in this regard.

[0072] 6) The “protocol” used in this application may refer to standard protocols in the field of communications, such as fourth-generation (4G) protocols. th Generation 4G network, fifth generation (5G) network th This application does not limit the scope of network protocols such as generation (5G), NR, 5.5G, and related protocols applied in future communication systems.

[0073] 7) In this application, "communication" can also be described as "data transmission", "information transmission", "data processing", etc. "Transmission" includes "sending" and "receiving".

[0074] 8) In this application, "sending information to XX (device)" can be understood as the destination of the information being that device. This can include sending information directly or indirectly to that device. "Receiving information from XX (device), or receiving information from XX (device)" can be understood as the source of the information being that device, and can include receiving information directly or indirectly from that device. Information may undergo necessary processing between the source and destination, such as format changes, but the destination can understand the valid information from the source.

[0075] 9) The terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0076] The technical solutions of this application embodiment can be applied to various communication systems, such as: Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication systems, 5th Generation (5G) systems or new radio (NR) systems and future communication systems, vehicle-to-other devices (V2X), where V2X can include vehicle-to-network (V2N), vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P), etc., Long Term Evolution-V (LTE-V) technology for vehicle-to-everything (V2X), vehicle-to-everything (V2X), machine-type communication (MTC), and Internet of Things (IoT). Things (IoT), Long Term Evolution of Machines (LTE-M), Machine to Machine (M2M), etc.

[0077] Figure 1 is a schematic diagram of a communication system applicable to an embodiment of this application. As shown in Figure 1, the communication system includes a radio access network (RAN) 100 and a core network (CN) 200. RAN 100 includes at least one RAN node (such as 110a and 110b, collectively referred to as 110) and at least one terminal device (such as 120a-120j, collectively referred to as 120). RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1). Terminal device 120 is wirelessly connected to RAN node 110. RAN node 110 is wirelessly or wired connected to core network 200. The core network device in core network 200 and RAN node 110 in RAN 100 can be different physical devices, or they can be the same physical device integrating core network logical functions and radio access network logical functions.

[0078] RAN 100 can be a 3GPP-related cellular system, such as a 4G, 5G mobile communication system, or a future-oriented evolution system. RAN 100 can also be an open access network (open RAN, O-RAN or ORAN), (cloud RAN, CRAN), or a wireless fidelity (WiFi) system. RAN 100 can also be a communication system that integrates two or more of the above systems.

[0079] RAN node 110, sometimes also referred to as access network equipment, RAN entity, or access node, constitutes part of the communication system and is used to help terminal devices achieve wireless access. Multiple RAN nodes 110 in this communication system can be of the same type or different types. In some scenarios, the roles of RAN node 110 and terminal device 120 are relative. For example, network element 120i can be a helicopter or drone, which can be configured as a mobile base station. For terminal devices 120j accessing RAN 100 through network element 120i, network element 120i is a base station; but for base station 110a, network element 120i is a terminal device. RAN node 110 and terminal 120 are sometimes both referred to as communication devices. For example, network elements 110a and 110b can be understood as communication devices with base station functions, and network elements 120a-120j can be understood as communication devices with terminal functions.

[0080] In one possible scenario, the RAN node can be a BS, eNodeB, access point (AP), TRP, gNB, a base station in a future mobile communication system, or an access node in a WiFi system. The RAN node can be a macro base station (as shown in Figure 1, 110a), a micro base station or indoor station (as shown in Figure 1, 110b), a relay node or donor node, or a radio controller in a CRAN scenario.

[0081] Optionally, the RAN node can also be a server, wearable device, vehicle, or in-vehicle equipment. For example, the access network equipment in V2X technology can be a road-side unit (RSU) or a base station. All or part of the functions of the RAN node in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (e.g., a cloud platform). The RAN node in this application can also be a logical node, logical module, or software capable of implementing all or part of the RAN node functions.

[0082] In another possible scenario, multiple RAN nodes collaborate to assist terminal devices in achieving wireless access, with different RAN nodes each implementing a portion of the base station's functions. For example, RAN nodes can be centralized units (CUs), distributed units (DUs), CU-control plane (CPs), CU-user plane (UPs), or radio units (RUs). CUs and DUs can be set up separately or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio frequency equipment or radio frequency units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs).

[0083] In different communication systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called O-CU (open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules.

[0084] It should be understood that the number of devices in the above communication system is for illustrative purposes only and is not limited thereto. In actual applications, the communication system may include more terminal devices, more RAN devices, and other devices.

[0085] It should be understood that Figure 1 is a simplified schematic diagram for ease of understanding, and the communication system may also include a greater number of network devices or terminal devices. Furthermore, the embodiments of this application can be applied to any communication scenario involving communication between a sending end device and a receiving end device.

[0086] A network device is a network-side device with wireless transceiver capabilities. A network device can be a device in a radio access network (RAN) that provides wireless communication capabilities to terminal devices, referred to as RAN equipment. For example, this network device can be a base station, an evolved NodeB (eNodeB), a next-generation NodeB (gNB) in a 5G mobile communication system, a 3GPP-evolved base station, a transmission reception point (TRP), an access node, a wireless relay node, or a wireless backhaul node in a WiFi system. In communication systems employing different radio access technologies (RATs), the name of the device with base station functionality may differ. For example, in an LTE system, it may be called an eNB or eNodeB, while in a 5G or NR system, it may be called a gNB. This application does not limit the specific name of the base station. A network device can contain one or more co-located or non-co-located transmission and reception points. For example, a network device may include at least one of the following: one or more central units (CUs), one or more distributed units (DUs), and one or more radio units (RUs). In different systems, CUs (or CU-CPs and CU-UPs), DUs, or RUs may have different names, but those skilled in the art will understand their meaning. For example, a radio access network may also be an open radio access network (O-RAN) architecture. In an ORAN system, a CU may also be called an O-CU (open CU), a DU may also be called an O-DU, a CU-CP may also be called an O-CU-CP, a CU-UP may also be called an O-CU-UP, and a RU may also be called an O-RU. Any of the CUs (or CU-CPs, CU-UPs), DUs, and RUs in this application may be implemented through software modules, hardware modules, or a combination of software and hardware modules. Exemplarily, the functionality of a CU may be implemented by one entity or different entities. For example, the functions of the CU can be further divided into the control plane and the user plane, which are implemented by different entities, namely the control plane CU entity (i.e., the CU-CP entity) and the user plane CU entity (i.e., the CU-UP entity). The CU-CP entity and the CU-UP entity can be coupled with the DU to jointly complete the functions of the access network equipment.For example, the CU (Complex Unit) is responsible for handling non-real-time protocols and services, implementing the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers. The DU (Digital Unit) is responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (RLC), medium access control (MAC), and physical (PHY) layers. This allows multiple network functional entities to implement some of the functions of a radio access network device. These network functional entities can be network elements within hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (e.g., a cloud platform). Network devices can also include active antenna units (AAUs). The AAU implements some physical layer processing functions, radio frequency processing, and related functions of the active antenna. Since RRC layer information ultimately becomes PHY layer information, or is derived from PHY layer information, in this architecture, higher-layer signaling, such as RRC layer signaling, can also be considered as being sent by the DU, or by the DU+AAU. It is understood that network devices can be one or more of the following: CU nodes, DU nodes, and AAU nodes. Furthermore, CUs can be classified as network devices in the radio access network (RAN) or in the core network (CN); this application does not limit this. For example, in vehicle-to-everything (V2X) technology, the access network device can be a roadside unit (RSU). Multiple access network devices in a communication system can be base stations of the same type or different types. Base stations can communicate with terminal devices or through relay stations. In the embodiments of this application, the device used to implement the network device function can be the network device itself or a device capable of supporting the network device in implementing that function, such as a chip system or a combination of devices or components capable of implementing the access network device function. This device can be installed in the network device. In the embodiments of this application, the chip system can be composed of chips or can include chips and other discrete devices.

[0087] A terminal device is a user-side device with wireless transceiver capabilities. It can be a fixed device, mobile device, handheld device (e.g., mobile phone), wearable device, in-vehicle device, or a wireless device (e.g., communication module, modem, or chip system) built into the aforementioned devices. Terminal devices are used to connect people, things, and machines, and can be widely used in various scenarios, such as: cellular communication, device-to-device (D2D) communication, V2X communication, machine-to-machine / machine-type communications (M2M / MTC) communication, the Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical care, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, drones, and robots. For example, a terminal device can be a handheld terminal in cellular communication, a communication device in D2D, an IoT device in MTC, a surveillance camera in intelligent transportation and smart cities, or a communication device on a drone, etc. Terminal devices are sometimes referred to as user equipment (UE), user terminal, user device, user unit, user station, terminal, access terminal, access station, UE station, remote station, mobile device, or wireless communication device, etc. A terminal device can also be a terminal device in an IoT system. IoT is an important component of future information technology development. Its main technical characteristic is connecting objects to networks through communication technology, thereby realizing an intelligent network of human-machine interconnection and machine-to-machine interconnection. In the embodiments of this application, IoT technology can achieve massive connectivity, deep coverage, and terminal power saving through, for example, narrowband (NB) technology. In the embodiments of this application, the device used to implement the functions of the terminal device can be the terminal device itself, or a device capable of supporting the terminal device to implement the functions, such as a chip system or a combination of devices or components capable of implementing the functions of the terminal device. This device can be installed in the terminal device.

[0088] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0089] To facilitate understanding of the embodiments of this application, the terminology involved in the embodiments of this application will be briefly introduced below.

[0090] 1. Multipath propagation: After the transmitter sends a signal, the signal will be reflected, scattered, refracted or diffracted when it encounters an obstacle during propagation, and thus reach the receiver along multiple propagation paths. This propagation phenomenon is called multipath propagation.

[0091] 2. LOS path: Line-of-sight wireless transmission refers to the transmission of signals between the transmitting antenna and the receiving antenna at a distance where they can "see each other". Here, "seeing each other" means that there are no obstacles between the transmitting end and the receiving end. In other words, the LOS path is the signal propagation path where there are no obstacles between the transmitting end and the receiving end.

[0092] 3. Non-line-of-sight (NLOS) path: The signal propagation path other than the LOS path among the multiple signal propagation paths between the transmitter and receiver. In this application, the non-LOS path can also be referred to as the reflection path or the target reflection path.

[0093] The technical problem to be solved and the technical solution adopted in this application are described below.

[0094] With the development and advancement of communication technology, in future cellular networks, base stations will not only be able to interconnect people and things, but will also possess sensing capabilities. The enabling technology that achieves the coexistence, mutual assistance, and mutual benefit of communication and sensing functions is called integrated sensing and communication. As research and development of integrated sensing and communication (ISAC) deepens in academia and industry, using radio frequency signals from communication systems for environmental sensing, such as moving target detection and environmental imaging, is becoming an increasingly popular research direction.

[0095] In the integration of communication and sensing, sensing refers to acquiring information about the surrounding environment through a sensing network, such as target localization, target imaging, and target detection. This sensing information can be used to optimize and improve communication systems, such as avoiding obstacles and improving communication quality. Sensing can also be used for channel modeling and signal analysis of wireless communication systems, thereby better understanding and optimizing communication performance. It should be emphasized that, unless otherwise specified, the sensing services mentioned in this application generally include one or more services, including ranging, angle measurement, velocity measurement, and frequency (Doppler) imaging.

[0096] In one implementation, the communication device can achieve sensing and measurement of the sensing target by receiving its own sensing signals. In this application, this self-sensing and self-receiving sensing method is referred to as self-sensing or single-base sensing. For example, as shown in Figure 2(a), the transmitting end emits a sensing signal, which is reflected by the sensing target and received by the transmitting end. The transmitting end can obtain information such as the distance or surface features of the sensing target based on the echo signal of the sensing signal.

[0097] In another implementation, the receiving and transmitting functions are performed independently, which is referred to as transceiver-separation sensing or bistatic sensing in this application. Transceiver separation can achieve better signal receiving and transmitting effects, and at the same time can reduce system complexity and improve system stability. For example, as shown in (b) of FIG. 2, the transceiver-separation sensing system includes two parts: a transmitting end and a receiving end. The transmitting end is responsible for transmitting a sensing signal, which is reflected by the sensing target and then received by the receiving end. The receiving end processes the sensing signal to obtain information about the sensing target.

[0098] As shown in (a) of FIG. 3, in a monostatic sensing scenario, the length of the target reflection path in monostatic sensing is equal to the distance d between the signal transmitter and the target, and the length of the LOS path can be considered to be equal to 0. Therefore, in this scenario, the length difference Δd between the target reflection path and the LOS path is equal to d. If Δd < c*T, the echo signal reflected by the target will arrive before a signal is completely transmitted, forming self-interference, where T is the signal transmission time and c is the speed of light. Similarly, as shown in (b) of FIG. 3, in a bistatic sensing scenario, if the length difference Δd between the direct line of sight (LOS) path between the transmitting end and the receiving end and the target reflection path is < c*T, the echo signal reflected by the target will arrive before the LOS path signal is completely received, forming self-interference. Therefore, regardless of the monostatic sensing scenario or the bistatic sensing scenario, when the signal length c*T is greater than the length difference Δd between the target reflection path and the LOS path, the echo signal will be affected by self-interference.

[0099] As can be seen from the above, the influence range of signal self-interference (or the range of the self-interference blind area) is related to the signal length. Therefore, the self-interference blind area can be effectively reduced by reducing the signal length. By shortening the signal duration, although the range of the self-interference blind area can be reduced, the pulse compression SNR gain of the signal is related to the signal length. Furthermore, when the signal length is shortened, the SNR gain of the signal will also decrease. For example, in a typical scenario of using a cellular network for sensing, the sensing distance is on the order of ten meters to one hundred meters. If the signal length is reduced to avoid the influence of self-interference, the signal length may be too short at this time, resulting in insufficient SNR gain and thus affecting the sensing performance.

[0100] In view of this, this application proposes a communication method that can effectively solve the above technical problems. The method embodiments proposed in this application are described below.

[0101] FIG. 4 is a schematic flowchart of a communication method 400 provided by this application. The method includes the following steps.

[0102] It is understood that method 400 can be executed by a sensing node and a processing node. Unless otherwise specified, a sensing node or a processing node can refer to the transmitting or receiving device itself, or it can refer to a device that enables the sensing node or processing node to perform this function. For ease of description, the terms "sensing node" and "processing node" will be used uniformly below. The sensing node can be a terminal device or a network device, and the processing node can be a terminal device or a network device.

[0103] S410, the first sensing node sends first area information to the processing node, the first area information indicating the area that the first sensing node needs to sense. Correspondingly, the processing node receives the first area information from the first sensing node.

[0104] It can be understood that the first sensing node is one of at least one sensing nodes that needs to perform a sensing task. For ease of description, this application uses the first sensing node among the at least one sensing nodes as an example to describe the interaction process between a sensing node and a processing node.

[0105] It can also be understood that at least one sensing node may include sensing nodes in a single-base sensing scenario and / or, sensing nodes in a dual-base sensing scenario. However, it should be noted that if at least one sensing node includes sensing nodes in a multi-base sensing scenario, then at least one sensing node includes at least one set of transmitting and receiving sensing nodes in a dual-base sensing scenario, and the sensing areas of the set of transmitting and receiving sensing nodes are the same. If the first sensing node is a sensing node in a dual-base sensing scenario, then the first sensing node can be either a transmitting or receiving sensing node, without limitation.

[0106] The following are some possible ways to indicate information in the first area.

[0107] Method 1: The first region information indicates the coordinates of the center point of the region to be sensed and the length of the region along each direction. For example, it indicates the coordinates of the region to be sensed in the Cartesian coordinate system, and the coordinates of the center point of the region to be sensed (x, y, y) are also provided. c ,y c ,z c ) and the region length (D) along the x, y, and z directions x D y D z ).

[0108] Method 2: The first region information indicates the vertex coordinates of the region to be perceived. For example, it indicates the coordinates of the region to be perceived in the Cartesian coordinate system, and indicates the vertex coordinates (x, y, y) of the region to be perceived. i ,y i ,z i ), i = 1 to 6.

[0109] For example, the first region information can also indicate information about the region to be perceived in other coordinate systems, such as polar coordinates or spherical coordinates, which will not be elaborated here.

[0110] S420, the processing node sends first configuration information to the first sensing node, wherein the first configuration information is used to configure a temporal domain resource for a sensing signal that is repeatedly transmitted within a frame for the first sensing node, the first configuration information is determined based on first region information, and the first configuration information indicates the duration of a single sensing signal. The time interval between two adjacent sensing signals Correspondingly, the first sensing node receives the first configuration information from the processing node.

[0111] Among them, T pulse and T gap The following conditions must be met:

[0112] 1)T pulse This ensures that the echo signal of the first sensing signal in the minimum reflection path arrives after the first sensing signal in the line-of-sight path has been received. Here, the first sensing signal is any one of the repeatedly transmitted sensing signals configured by the first configuration information, and the minimum reflection path and the line-of-sight path are the propagation paths of the sensing signals within the sensing area indicated by the first area information.

[0113] It is understood that the first sensing signal may undergo multipath propagation within the sensing area indicated by the first area information. Therefore, the first sensing node corresponds to multiple reflection paths within the sensing area indicated by the first area information. The minimum reflection path is the reflection path with the shortest propagation path among the multiple reflection paths, and correspondingly, the maximum reflection path is the reflection path with the longest propagation path among the multiple reflection paths. Based on the description in 1), This ensures that the echo signal of the first sensing signal in any of the multiple reflection paths is not affected by the first sensing signal in the direct line of sight, thereby preventing self-interference of the sensing signal.

[0114] Furthermore, 1) can also be described as: T pulse The product of the speed of light c and Δd is less than or equal to Δd. min , where Δd min This is the length difference between the minimum reflection path and the direct viewing path. In one possible implementation, T... pulse It can satisfy formula (1):

[0115] Generally, in typical current sensing scenarios, the sensing distance is on the order of ten to one hundred meters. Based on constraint 1), the length of the sensing signal may be relatively short. Therefore, the first configuration information can be used to configure a temporal resource for the sensing signal that is repeatedly transmitted within a frame for the first sensing node. By repeatedly transmitting the same sensing signal, the SNR gain of the sensing signal can be improved. A description of the SNR gain will be provided later and will not be elaborated here.

[0116] Since the first configuration information configures the repeated transmission of sensing signals, it is necessary to further constrain the interference between adjacent sensing signals. The specific constraints are shown in 2).

[0117] 2)T gap This ensures that the echo signal of the second sensing signal in the minimum reflection path arrives after the echo signal of the first sensing signal in the maximum reflection path has been received. The minimum reflection path, maximum reflection path, and line-of-sight path are described in section 1). The first and second sensing signals are adjacent sensing signals configured by the first configuration information, and the transmission time of the first sensing signal is earlier than the transmission time of the second sensing signal.

[0118] Based on the description in 2) This ensures that the echo signals of two adjacent sensing signals do not affect each other, thereby suppressing the interference between the echo signals of adjacent sensing signals.

[0119] Furthermore, 2) can also be described as: T gap The product of the speed of light c and the speed of light c is greater than or equal to the first difference, which is Δd. max Subtract Δd min The difference, where Δd max Δd is the length difference between the maximum reflection diameter and the direct viewing diameter. min This is the length difference between the minimum reflection path and the direct viewing path. In one possible implementation, T... gap Formula (2) can be satisfied:

[0120] It should be noted that in a dual-base sensing scenario, if the transmitting and receiving sensing nodes communicate via a one-to-one transmission, there is only one LOS path between the two devices. However, if the transmitting and receiving sensing nodes communicate via a one-to-many transmission, there are multiple LOS paths between the two devices. When multiple LOS paths exist, the Δd described in this application... max Δd is the length difference between the maximum reflection path and the minimum LOS path among multiple LOS paths. min It is the length difference between the minimum reflection path and the maximum LOS path among multiple LOS paths.

[0121] Optionally, prior to S420, the method may further include:

[0122] S440, the first sensing node sends its first node parameters to the processing node. The first node parameters include the location information of the first sensing node.

[0123] Optionally, the first node parameters may also include at least one of the following: carrier wave, bandwidth, antenna aperture, number of antenna channels, antenna orientation, and antenna pattern.

[0124] S450, the processing node determines the minimum reflection path, maximum reflection path, and direct line-of-sight path of the first sensing node corresponding to the sensing area indicated by the first area information based on the first node parameters and the first area information.

[0125] For example, if the first sensing node in S440 is a sensing node in a dual-base sensing scenario, then the second sensing node in the same dual-base sensing scenario (i.e., another sensing node in the dual-base sensing scenario) can also send second node parameters (i.e., node parameters of the second sensing node) to the processing node. In this scenario, further, in S450, the processing node can determine the minimum reflection path, maximum reflection path, and direct line-of-sight path corresponding to the sensing area indicated by the first area information for the first and second sensing nodes based on the first node parameters, the second node parameters, and the first area information.

[0126] For example, the second sensing node can also send second area information to the processing node, wherein the second area information is the same as the sensing area indicated by the first area information.

[0127] Then, the processing node can determine the first configuration information based on the minimum reflection path, the maximum reflection path, the direct line of sight, and the above constraints 1) and 2).

[0128] The above refers to the T indicated by the first configuration information. pulse and T gap A detailed description has been provided. The SNR gain of the multiple sensing signals configured in the first configuration information is described below.

[0129] It is understandable that the SNR gain G of the multiple sensing signals configured in the first configuration information is... SNR The total number of sampling points of all sense signals transmitted within a frame Relatedly, the larger the total number of sampling points, the greater the SNR gain.

[0130] For example, G SNR and The relationship between them satisfies formula (3):

[0131] Where, N pulse N is the number of sense signals repeatedly transmitted in a frame. samplingf is the number of sampling points on a sensing signal. s The sampling frequency.

[0132] Based on the above formulas (3) to (5), it can be seen that when N sampling When the signal is fixed, the more times the sensing signal is repeatedly transmitted in a frame, the greater the SNR gain of the sensing signal. In other words, by repeatedly transmitting the sensing signal, the SNR gain of the sensing signal can be improved. The following section, referring to Figure 5, discusses N... pulse Let's illustrate with examples.

[0133] Optional, the first configuration information includes in, This refers to the number of time slots in a frame that can be used to transmit sensing signals. This refers to the number of symbols available for transmitting sensing signals in a single time slot. This represents the number of subsymbols within a symbol that can be used to transmit sensing signals. Therefore,

[0134] It is understood that a sub-symbol in this application can be regarded as a sub-resource contained in a time slot, and this application does not specifically limit the name of the sub-symbol.

[0135] Figure 5 is a schematic diagram of the temporal resources of the sensing signal configured in the first configuration information. Figure 5 consists of three layers. The last layer represents a frame, and one square in a frame represents a time slot. A frame contains 18 time slots. The middle layer represents a time slot, and one square in a time slot represents a symbol. A time slot contains 14 symbols. The first layer represents a symbol, and one square in a symbol represents a sub-symbol. A symbol contains multiple sub-symbols, and the length of a sensing signal is equal to the length of a sub-symbol. In Figure 5, the time slots filled with patterns in a frame are the time slots that can be used to transmit sensing signals (i.e., the time slots in time slot set #1 and time slot set #2). The symbol labeled S in a time slot is a symbol that can be used to transmit sensing signals, and the sub-symbols filled with patterns in a symbol are sub-symbols that can be used to transmit sensing signals.

[0136] In one possible scenario, the processing node can determine the SNR gain requirement corresponding to the sensing task of the first sensing node. Therefore, the processing node needs to determine first configuration information based not only on the first region information but also on this gain requirement, so that the SNR gain G of the multiple sensing signals configured by the first configuration information is... SNR This satisfies the SNR gain requirement.

[0137] Optionally, the SNR gain requirement can be the SNR gain itself that needs to be met, such as 10dB, 20dB, etc.

[0138] Optionally, the SNR gain requirement can be an SNR gain index. For example, an SNR gain index table can be predefined or defined by the protocol. This SNR gain index table includes multiple SNR gain indices and their corresponding SNR gain values. For example, the table includes indices 0, 1, 2, etc., where index value 0 corresponds to an SNR gain of 10dB, index value 1 corresponds to an SNR gain of 20dB, and index value 2 corresponds to an SNR gain of 30dB.

[0139] It is understood that the first configuration information shown in Figure 5 is only an example. This application does not limit the specific configuration method of the first configuration information, as long as the first configuration information meets the above requirements.

[0140] It can also be understood that the first configuration information in Figure 5 includes three levels of configuration parameters, which are the configuration parameters corresponding to the time slot-symbol-sub-symbol levels. For example, a two-level configuration can also be implemented according to actual needs, with the three levels of configuration parameters corresponding to the time slot-symbol levels, such as the length of a single sensing signal being equal to the length of a symbol. Alternatively, a single-level configuration can be implemented, that is, configuring the sensing signal at the time slot level, such as the length of a single sensing signal being equal to the length of a time slot.

[0141] The following example illustrates the specific parameters included in the first configuration information, which comprises three levels of configuration parameters: time slot, symbol, and sub-symbol. The configuration parameters corresponding to the time slot level include...

[0142] The configuration parameters corresponding to the symbol level include

[0143] The configuration parameters corresponding to the sub-symbol level include:

[0144] Where N-means represents the quantity, T-means represents the time interval, and F-means represents the repetition factor. Specifically,

[0145] 1) See the description in Figure 5; it will not be repeated here.

[0146] 2) These indicate the length of a time slot, the length of a symbol, and the length of a sub-symbol, respectively, where the length T of a single sensing signal is... pulse Equal to the length of a sub-symbol

[0147] 3) Indicates the time interval between the start position of a frame and the new start position of a frame. Indicates the time interval between the start position of a time slot and the new start position of a time slot. Indicates the time interval between the starting position of a symbol and the new starting position of a symbol.

[0148] For example, in Figure 5, the new start position of a frame in the last layer is the start position of slot 1, the new start position of a slot in the middle layer is the start position of symbol 1, and the new start position of a symbol in the first layer is the start position of the first small square in the figure.

[0149] 4) The time interval between the new start position of a frame and the start position of a set of time slots within a frame that can be used to transmit sensing signals. The time interval between the new start position of a time slot and the start position of a set of symbols available for transmission of sensing signals within a time slot. Indicates the time interval between the new starting position of a symbol and the starting position of a set of sub-symbols within a symbol that can be used to transmit sensing signals.

[0150] For example, if two time slot sets, namely time slot set #1 and time slot set #2, are configured in the last layer of Figure 5, then the first configuration information may include two... two These are the time intervals between the new starting position of a time slot and the starting position of the first time slot (i.e., time slot 1) in time slot set #1, and the time interval between the new starting position of a time slot and the starting position of the first time slot (i.e., time slot 10) in time slot set #2, respectively. Regarding... and The description in Figure 5 is related to Similarly, I will not go into detail here.

[0151] 5) Indicates the time interval between two adjacent time slots in a set of time slots available for transmitting sensing signals within a frame. It indicates the time interval between two adjacent symbols in a set of symbols that can be used to transmit sensing signals within a time slot. Indicates the time interval between two adjacent sub-symbols in a set of sub-symbols within a symbol that can be used to transmit sensing signals.

[0152] For example, if slot set #1 and slot set #2 are configured in the last layer of Figure 5, then the first configuration information can include two... two These are the time intervals between two adjacent time slots in time slot set #1, and the time intervals between two adjacent time slots in time slot set #2, respectively. Regarding... and The description in Figure 5 is related to Similarly, I will not go into detail here.

[0153] 6) Indicates the number of time slots in a time slot set. Indicates the number of symbols in a set of symbols. Indicates the number of subsymbols in a set of subsymbols.

[0154] For example, the time slot set #1 in Figure 5 corresponds to... The value is 3, corresponding to time slot set #1. The value of is 2.

[0155] It is understandable that during the initial sensing measurement, the processing node needs to configure all parameters in the three-level configuration parameters of time slot-symbol-sub-symbol included in the first configuration information for the first sensing node so that the first sensing node can perform sensing measurements based on the first configuration information. However, in subsequent sensing measurements, if some parameters in the first configuration information change, the processing node can reconfigure only the changed parameters in the first configuration information for the first sensing node, and the other unchanged parameters do not need to be reconfigured to reduce signaling overhead.

[0156] S430, the first sensing node performs sensing measurements based on the first configuration information.

[0157] It can be understood that if the first sensing node is a sensing node in a single-base sensing scenario, then the first sensing node will automatically transmit and receive sensing signals based on the first configuration information. If the first sensing node is a transmitting sensing node in a dual-base sensing scenario, then the first sensing node will transmit sensing signals based on the first configuration information. If the first sensing node is a receiving sensing node, then the first sensing node will receive sensing signals based on the first configuration information.

[0158] It can also be understood that in a dual-base sensing scenario, the processing node is configured with the same sensing signal resources for a set of transmitting and receiving sensing nodes, that is, the first configuration information corresponding to the two sensing nodes is the same.

[0159] The following examples illustrate this method in different perception scenarios.

[0160] Scenario 1: In this scenario, there is one processing node and at least one single-base sensing node. As shown in Figure 6, sensing nodes A, B, and C are networked to sense targets (buildings, cars, etc.) in the sensing area. The processing node does not participate in sensing. There is a data link between the sensing nodes and the processing node in Figure 6 (the solid line between the sensing nodes and the processing node represents the data link). The sensing nodes send sensing signals and receive echo signals reflected from the sensing targets in the sensing area (the dashed line between the sensing nodes and the sensing targets represents the propagation path of the sensing signals and the corresponding echo signals).

[0161] Figure 7 is a schematic flowchart of a possible perception method based on scenario one proposed in this application. The method includes the following steps.

[0162] S710, sensing nodes A, B, and C respectively send their corresponding node parameters and sensing area information to the processing node. Correspondingly, the processing node receives the node parameters and sensing area information sent by each node.

[0163] For information on the node parameters and sensing area of ​​the sensing nodes, please refer to the descriptions in S410 and S440, which will not be repeated here.

[0164] S720, the processing node determines configuration information #1 based on the node parameters and sensing area information corresponding to sensing node A. Configuration information #1 is used to configure temporal resources for a sensing signal that is repeatedly transmitted within a frame for sensing node A. Similarly, the processing node determines configuration information #2 based on the node parameters and sensing area information corresponding to sensing node B. Configuration information #2 is used to configure temporal resources for a sensing signal that is repeatedly transmitted within a frame for sensing node B. The processing node determines configuration information #3 based on the node parameters and sensing area information corresponding to sensing node C. Configuration information #3 is used to configure temporal resources for a sensing signal that is repeatedly transmitted within a frame for sensing node C.

[0165] The methods for determining configuration information #1, configuration information #2, and configuration information #3 are described in the first configuration information description and will not be repeated here.

[0166] S730, the processing node sends its respective configuration information to sensing nodes A, B, and C. Correspondingly, sensing nodes A, B, and C receive the configuration information from the processing node.

[0167] S740, sensing node A performs sensing measurements on the sensing area indicated by its sensing area information based on configuration information #1. Similarly, sensing node B performs sensing measurements on the sensing area indicated by its sensing area information based on configuration information #2, and sensing node C performs sensing measurements on the sensing area indicated by its sensing area information based on configuration information #3.

[0168] Scenario 2: In this scenario, there is one processing node and multiple single-base sensing nodes. As shown in Figure 8, sensing nodes A, B, and C are networked to sense targets (buildings, cars, etc.) in the sensing area. The processing node can also participate in sensing measurements as a single-base sensing node. In Figure 8, there is a data link between the sensing nodes and the processing node (the solid line between the sensing nodes and the processing node represents the data link). The sensing nodes send sensing signals and receive echo signals reflected from the sensing targets in the sensing area (the dashed line between the sensing nodes and the sensing targets represents the propagation path of the sensing signals and the corresponding echo signals).

[0169] Figure 9 is a schematic flowchart of a possible sensing method based on scenario two proposed in this application. The interaction flow between sensing nodes A, B, and C and the processing node is described in Figure 7 and will not be repeated here. The difference between this method and the method shown in Figure 7 is that, in S920, based on S720, the processing node needs to determine configuration information #4 based on its own node parameters and sensing area information. Configuration information #4 is used to configure a temporal domain resource for a sensing signal that is repeatedly transmitted within a frame for the processing node. In S940, based on S740, the sensing node also performs sensing measurements on the sensing area indicated by its sensing area information based on configuration information #4. The remaining steps are the same as the corresponding steps in Figure 7 and will not be repeated here.

[0170] Scenario 3: In this scenario, there is one processing node and at least one set of bi-base sensing nodes. As shown in Figure 10, in this scenario, a set of bi-base sensing nodes (i.e., the transmitting sensing node and the receiving sensing node in the figure) are networked to sense the sensing targets (buildings, cars, vehicles, etc.) in the sensing area. In Figure 10, the transmitting sensing node and the receiving sensing node are connected to the processing node via data links (the solid lines between the sensing nodes and the processing nodes in the figure represent the data links). The sensing nodes send sensing signals and receive the echo signals of the sensing signals reflected from the sensing targets in the sensing area. The transmitting sensing node sends sensing signals, and the receiving sensing node receives the echo signals of the sensing signals reflected from the sensing targets in the sensing area (the dashed lines between the sensing nodes and the sensing targets represent the propagation paths of the sensing signals and the corresponding echo signals).

[0171] It is understood that Figure 10 only shows one set of bistatic sensing nodes as an example. In actual sensing scenarios, there may be multiple sets of bistatic sensing nodes. For ease of description, the following description uses one set of bistatic sensing nodes from Figure 10.

[0172] Figure 11 is a schematic flowchart of a possible perception method based on scenario three proposed in this application. The method includes the following steps.

[0173] S1110, the transmitting and receiving sensing nodes respectively send their corresponding node parameters and sensing area information to the processing node. Correspondingly, the processing node receives the node parameters and sensing area information sent by each sensing node.

[0174] It is understood that the sensing areas of the transmitting and receiving sensing nodes are the same. For information on the node parameters and sensing areas of the sensing nodes, please refer to the descriptions in S410 and S440, which will not be repeated here.

[0175] S1120, the processing node determines configuration information #5 based on the node parameters corresponding to the sending sensing node, the node parameters corresponding to the receiving sensing node, and the sensing area information of the sending sensing node (or receiving sensing node). Configuration information #5 is used to configure a temporal domain resource for a sensing signal that is repeatedly transmitted within a frame for the sending sensing node and the receiving sensing node.

[0176] For the method of determining configuration information #5, please refer to the description of the first configuration information, which will not be repeated here.

[0177] S1130, the processing node sends configuration information #5 to both the transmitting and receiving sensing nodes. Correspondingly, the transmitting and receiving sensing nodes receive configuration information #5 from the processing node.

[0178] S1140, the transmitting sensing node and the receiving sensing node configure sensing resources according to configuration information #5. Specifically, the transmitting sensing node generates a transmitting signal according to configuration information #5, and the receiving sensing node generates a local oscillator signal identical to the transmitting signal according to configuration information #5.

[0179] S1150, the transmitting sensing node sends the generated sensing signal to the sensing target in the sensing area.

[0180] S1160, the receiving sensing node receives the echo signal of the sensing signal and obtains the echo data.

[0181] For example, acquiring echo data includes: transmitting a sensing reference signal that is scattered by the sensing target; and separating the signal related to the sensing target from the mixing of the local oscillator signal and the echo signal by the sensing node, thereby acquiring echo data.

[0182] Scenario 4: In this scenario, there is one processing node, at least one set of dual-base sensing nodes, and at least one single-base sensing node. As shown in Figure 12, in this scenario, a single-base sensing node and a set of dual-base sensing nodes (i.e., the transmitting sensing node and the receiving sensing node in the figure) are networked to sense the sensing targets (buildings, cars, vehicles, etc.) in the sensing area. In Figure 12, the single-base sensing node and the set of dual-base sensing nodes are connected to the processing node via data links (the solid lines between the sensing nodes and the processing nodes in the figure represent the data links). The single-base sensing node transmits sensing signals and receives echo signals of the sensing signals reflected from the sensing targets in the sensing area. The transmitting sensing node transmits sensing signals, and the receiving sensing node receives echo signals of the sensing signals reflected from the sensing targets in the sensing area (the dashed lines between the sensing nodes and the sensing targets represent the propagation paths of the sensing signals and the corresponding echo signals).

[0183] It is understood that Figure 12 only shows an example of one set of bistatic sensing nodes and one single-static sensing node. In actual sensing scenarios, there may be multiple sets of bistatic sensing nodes and / or multiple single-static sensing nodes. For ease of description, the following description uses the set of bistatic sensing nodes and one single-static sensing node in Figure 12.

[0184] Figure 13 is a schematic flowchart of a possible perception method based on scenario four proposed in this application. The interaction flow between the single-base sensing node and the processing node in this method is described in Figure 7, and the interaction flow between a group of bi-base sensing nodes and the processing node, as well as the interaction flow between a group of bi-base sensing nodes, is described in Figure 11, and will not be repeated here.

[0185] The communication method embodiment of this application has been described in detail above with reference to Figures 1 to 13. The communication device embodiment of this application will now be described in detail below with reference to Figures 14 and 15. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment; therefore, any parts not described in detail can be referred to the preceding method embodiment.

[0186] Figure 14 is a schematic diagram of a communication device 1400 provided in an embodiment of this application. As shown in Figure 14, the communication device 1400 includes a processing module 1410 and a communication module 1420. The communication device 1400 can be a sensing node, or a communication device applied to or used in conjunction with a sensing node to implement a method executed by the sensing node, such as a chip, chip system, or circuit; or, the communication device 1400 can be a processing node, or a communication device applied to or used in conjunction with a processing node to implement a method executed by the processing node, such as a chip, chip system, or circuit.

[0187] The communication module can also be called a transceiver module, transceiver, transceiver unit, or transceiver device. The processing module can also be called a processor, processing board, processing unit, or processing device. Optionally, the communication module is used to execute the sending and receiving operations of the sensing node and processing node in the above method. The device in the communication module that implements the receiving function can be regarded as a receiving unit, and the device in the communication module that implements the sending function can be regarded as a sending unit. That is, the communication module includes a receiving unit and a sending unit.

[0188] When the communication device 1400 is applied to the sensing node, the processing module 1410 can be used to implement the processing function of the sensing node in the above embodiments, and the communication module 1420 can be used to implement the sending and receiving function of the sensing node in the above embodiments.

[0189] When the communication device 1400 is applied to the processing node, the processing module 1410 can be used to implement the processing function of the processing node in the above embodiments, and the communication module 1420 can be used to implement the sending and receiving function of the sensing node in the above embodiments.

[0190] Furthermore, it should be noted that the aforementioned communication module and / or processing module can be implemented through virtual modules. For example, the processing module can be implemented through software functional units or virtual devices, and the communication module can be implemented through software functions or virtual devices. Alternatively, the processing module or communication module can also be implemented through physical devices, such as chips / circuits (e.g., integrated circuits or logic circuits). The communication module can be an input / output circuit and / or a communication interface, performing input operations (corresponding to the aforementioned receiving operation) and output operations (corresponding to the aforementioned sending operation); the processing module is an integrated processor, microprocessor, or circuit (e.g., integrated circuits or logic circuits).

[0191] The module division in this application is illustrative and represents only one logical functional division. In actual implementation, other division methods are possible. Furthermore, the functional modules in the various examples of this application can be integrated into a single processor, exist as separate physical entities, or be integrated into a single module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0192] Figure 15 is a schematic diagram of another communication device 1500 provided in an embodiment of this application. As shown in Figure 15, optionally, the communication device 1500 may be a chip or a chip system. Optionally, in this application, the chip system may be composed of chips, or may include chips and other discrete devices.

[0193] The communication device 1500 can be used to implement the functions of any device (e.g., a sensing node, a processing node) in the communication system described in the foregoing examples. The communication device 1500 may include at least one processor 1510. Optionally, the processor 1510 is coupled to a memory, which may be located within the device, integrated with the processor, or located outside the device. For example, the communication device 1500 may also include at least one memory 1520. The memory 1520 stores computer programs, computer programs or instructions, and / or data necessary for implementing any of the above examples; the processor 1510 may execute the computer program stored in the memory 1520 to perform the methods in any of the above examples.

[0194] The communication device 1500 may also include a communication interface 1530, through which the communication device 1500 can interact with other devices. For example, the communication interface 1530 may be a transceiver, circuit, bus, module, pin, or other type of communication interface. When the communication device 1500 is a chip-based device or circuit, the communication interface 1530 in the device 1500 may also be an input / output circuit, capable of inputting information (or receiving information) and outputting information (or sending information). The processor 1510 may be an integrated processor, microprocessor, integrated circuit, or logic circuit, etc., and the processor can determine the output information based on the input information.

[0195] The coupling in this application refers to indirect coupling or communication connection between devices, units, or modules, which can be electrical, mechanical, or other forms, used for information exchange between devices, units, or modules. The processor 1510 may operate in conjunction with the memory 1520 and the communication interface 1530. This application does not limit the specific connection medium between the processor 1510, the memory 1520, and the communication interface 1530.

[0196] Optionally, as shown in FIG15, the processor 1510, the memory 1520, and the communication interface 1530 are interconnected via a bus 1540. Optionally, the bus may include buses of the type such as address bus, data bus, and control bus. Furthermore, for ease of illustration, FIG15 shows one bus 1540, but does not indicate that there is only one bus or only one type of bus.

[0197] It should be understood that the processor mentioned in the embodiments of this application can be one of the following devices or a portion of the circuitry used for processing functions: a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0198] It should also be understood that the memory mentioned in the embodiments of this application can be volatile memory and / or non-volatile memory. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM). For example, RAM can be used as an external cache. By way of example and not limitation, RAM includes the following forms: static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0199] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) can be integrated into the processor.

[0200] It should also be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0201] This application also provides a computer-readable storage medium storing computer instructions for implementing the methods executed by the sensing node and the processing node in the above-described method embodiments.

[0202] This application also provides a computer program product comprising instructions which, when executed by a computer, implement the methods performed by the sensing node and the processing node in the above-described method embodiments.

[0203] This application also provides a communication system, which includes the sensing node and processing node in the above embodiments.

[0204] The explanations and beneficial effects of the relevant contents in any of the devices provided above can be referred to the corresponding method embodiments provided above, and will not be described again here.

[0205] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0206] In this application, examples may reference each other without logical contradiction. For example, methods and / or terms between method embodiments may reference each other, functions and / or terms between device embodiments may reference each other, and functions and / or terms between device examples and method examples may reference each other.

[0207] It should be understood that the above embodiments are mainly illustrated using devices in existing network architectures as examples, and the specific form of the devices is not limited in the embodiments of this application. For example, any device that can achieve the same function in the future is applicable to the embodiments of this application.

[0208] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0209] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

[0210] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0211] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0212] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0213] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0214] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A perception method, comprising: The method comprises: receiving first area information, the first area information indicating an area required to be sensed by a first sensing node; transmitting first configuration information, the first configuration information being used for configuring time domain resources of a single sensing signal for the first sensing node, the first configuration information being determined based on the first zone information, the first configuration information indicating a time duration T of the single sensing signal pulse and a time interval T between two adjacent sensing signals gap wherein, The T pulse such that the echo signal of the first perception signal in the minimum reflection path reaches after the reception of the first perception signal in the direct path, The T gap such that the echo signal of the second perception signal in the minimum reflection path arrives after the echo signal of the first perception signal in the maximum reflection path has been received, the minimum reflection range, the maximum reflection range and the direct view range are propagation paths of a sensing signal configured by the first configuration information in a sensing area indicated by the first area information, the first sensing signal and the second sensing signal are adjacent sensing signals configured by the first configuration information, and a transmission time of the first sensing signal is earlier than that of the second sensing signal.

2. The method of claim 1, wherein, The first configuration information further indicates a total number of sampling points of all sensing signals transmitted in one frame, wherein the first configuration information is determined based on the first area information and a signal-to-noise ratio (SNR) gain index corresponding to the first sensing node, the SNR gain corresponding to the first configuration information is greater than or equal to a SNR gain value indicated by the SNR gain index, and the SNR gain corresponding to the first configuration information is determined based on the total number of sampling points of all sensing signals transmitted in the one frame.

3. The method according to claim 1 or 2, characterized in that, The method further comprises: receiving first node parameters of the first sensing node, the first node parameters including position information of the first sensing node; determining the minimum reflection range, the maximum reflection range and the direct view range based on the first node parameters and the first area information.

4. The method of claim 3, wherein, The method further comprises: receiving second area information and second node parameters corresponding to a second sensing node, the second node parameters including position information of the second sensing node, the first sensing node and the second sensing node being a group of transmitting sensing nodes and receiving sensing nodes in a double-base sensing scenario, and the sensing areas indicated by the first area information and the second area information being the same; determining the minimum reflection range, the maximum reflection range and the direct view range based on the first node parameters, the second node parameters and the first area information.

5. A perception method comprising: The method comprises: transmitting first area information, the first area information indicating an area required to be sensed by a first sensing node; receiving first configuration information, the first configuration information being used for configuring time domain resources of a single sensing signal for the first sensing node, the first configuration information being determined based on the first zone information, the first configuration information indicating a time duration T of the single sensing signal pulse and a time interval T between two adjacent sensing signals gap wherein, The T pulse such that the echo signal of the first perception signal in the minimum reflection path reaches after the reception of the first perception signal in the direct path, The T gap such that the echo signal of the second perception signal in the minimum reflection path arrives after the echo signal of the first perception signal in the maximum reflection path has been received, the minimum reflection range, the maximum reflection range and the direct view range are propagation paths of a sensing signal configured by the first configuration information in a sensing area indicated by the first area information, the first sensing signal and the second sensing signal are adjacent sensing signals configured by the first configuration information, and a transmission time of the first sensing signal is earlier than that of the second sensing signal; performing sensing measurement based on the first configuration information.

6. The method of claim 5, wherein, The first configuration information further indicates a total number of sampling points of all sensing signals repeatedly transmitted in one frame, wherein the first configuration information is determined based on the first area information and a signal-to-noise ratio (SNR) gain index corresponding to the first sensing node, the SNR gain corresponding to the first configuration information is greater than or equal to a SNR gain value indicated by the SNR gain index, and the SNR gain corresponding to the first configuration information is determined based on the total number of sampling points of all sensing signals transmitted in the one frame.

7. The method according to claim 5 or 6, characterized in that, The method further comprises: transmitting first node parameters of the first sensing node, the first node parameters including position information of the first sensing node, wherein the minimum reflection range, the maximum reflection range and the direct view range are determined based on the first node parameters and the first area information.

8. The method of claim 7, wherein, The minimum reflection range, the maximum reflection range and the direct view range are determined based on the first node parameter and the first area information, comprising: The minimum reflection range, the maximum reflection range and the direct view range are determined based on the first node parameter, a second node parameter of a second sensing node, and the first area information, wherein the second node parameter comprises position information of the second sensing node, the first sensing node and the second sensing node are respectively a group of transmitting sensing nodes and receiving sensing nodes in a double-base sensing scenario, and the sensing areas of the first sensing node and the second sensing node are the same.

9. The method according to any one of claims 1 to 8, characterized in that, The first sensing node is one of a plurality of sensing nodes that need to perform a sensing task.

10. The method of any one of claims 1 to 9, wherein, The T gap The product of the light speed c is greater than or equal to the first difference, the first difference is Δd max Subtract Δd min The difference, wherein the Δd max The length difference between the maximum reflection diameter and the direct view diameter, the Δd min The length difference between the minimum reflection diameter and the direct view diameter, The T pulse The product of the light speed c and the Δd min .

11. The method of any one of claims 1 to 10, wherein, total number of samples of all perceptual signals of the one intra-frame transmission a number of perceived signals equal to one intra-frame repetition transmission configured by the first configuration information and product of the number of bits in the first and second fields, the a number of sampling points on one sensing signal.

12. The method of claim 11, wherein, The SNR gain of the sensing signal configured by the first configuration information is equal to 10 times 13. The method of any one of claims 1 to 12, wherein, The first configuration information comprises at least one parameter in a three-level configuration parameter, and the three-level configuration parameter respectively corresponds to a configuration parameter of a time slot, a symbol, and a sub-symbol level. The configuration parameters corresponding to the time slot level include The configuration parameters corresponding to the symbol level include The configuration parameters corresponding to the sub-symbol level include wherein, The indicating a number of time slots available for transmitting sensing signals in one frame, The indicating a number of symbols available for transmitting sensing signals in one time slot, The indicating a number of sub-symbols available for transmitting sensing signals in one symbol, The The The respectively indicate a length of a slot, a length of a symbol, a length of a sub-symbol, wherein the T pulse is equal to the The indicating a time interval between a starting position of one frame and a new starting position of the one frame, The indicating a time interval between a starting position of one time slot and a new starting position of the one time slot, The indicating a time interval between a starting position of one symbol and a new starting position of the one symbol, The indicating a time interval between the new starting position of the one frame and a starting position of a set of time slots available for transmitting sensing signals in the one frame, The indicating a time interval between the new starting position of the one time slot and a starting position of a set of symbols available for transmitting sensing signals in the one time slot, The indicating a time interval between the new starting position of the one symbol and a starting position of a set of sub-symbols available for transmitting sensing signals in the one symbol, The indicating a time interval between two adjacent time slots in a set of time slots available for transmitting sensing signals in the one frame, The indicating a time interval between two adjacent symbols in a set of symbols available for transmitting sensing signals in the one time slot, The indicating a time interval between two adjacent sub-symbols in a set of sub-symbols available for transmitting sensing signals in the one symbol, The indicating a number of time slots in the set of time slots, The indicating a number of symbols in the set of symbols, The indicating a number of sub-symbols in the set of sub-symbols.

14. A communications device, characterized by comprising: a unit for implementing the method of any one of claims 1 to 4, or any one of claims 9 to 13; or a unit for implementing the method of any one of claims 5 to 13.

15. A communications device, characterized by comprising at least one processor and interface circuitry for receiving signals from and transmitting signals to other communication devices outside the communication device and to the processor or from the processor and to the other communication devices outside the communication device, the processor causing the method of any one of claims 1 to 13 to be implemented by logic circuitry or executing code instructions.

16. The communication apparatus according to claim 14, wherein The communication device is a chip or chip system.

17. A computer-readable storage medium, characterized in that, The storage medium has stored therein a computer program or instructions which, when executed, cause the method of any one of claims 1 to 13 to be implemented.

18. A computer program product, characterised in that, The computer program, when executed, causes the method of any one of claims 1 to 13 to be implemented.

19. A communication system, characterized by comprising: at least one of a sensing node and a processing node, wherein, the processing node is configured to perform the method of any one of claims 1 to 4, or, 9 to 13; the sensing node is configured to perform the method of any one of claims 5 to 13.

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