Communication method and apparatus

Abstract

The present application provides a communication method and an apparatus. The method is applied to a first apparatus and comprises: performing amplitude adjustment on some subcarriers of a first data signal in frequency domain to obtain a second data signal, wherein a first signal comprises the first data signal and a reference signal, and the reference signal and the first data signal are located at different time domain positions; and outputting a second signal, wherein the second signal comprises the second data signal and the reference signal, the first data signal is a single-carrier signal, and the first data signal and the second data signal are used for communication and sensing. By means of the described implementation, amplitude adjustment is performed on some but not all subcarriers of a data signal in frequency domain, and relative balance between sensing performance and communication performance of a single-carrier signal is realized, thereby improving user experience.

Description

Communication method and apparatus

[0001] Cross-reference to Related Applications

[0002] This application claims priority to the Chinese Patent Application No. 202411038602.6, filed on July 30, 2024, entitled “A communication method and apparatus”, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the field of wireless communication, and in particular to a communication method and apparatus. BACKGROUND

[0004] With the continuous development of communication technology and wireless sensing technology, the integration of communication technology and wireless sensing technology, i.e., integrated sensing and communication (ISAC), or joint communication and sensing (JCAS / ICAS), has become a popular research direction. In a wireless sensing system, a wireless signal transmitted by a communication device has both sensing and communication capabilities, such a signal can be referred to as a sensing signal, and the data in the sensing signal can be referred to as sensing data. For example, a transmitting end can transmit a sensing signal to a receiving end to achieve information transmission and sensing of a target, such as sensing the surrounding environment, the moving speed of an object, the distance, etc.

[0005] In ISAC communication, the sensing signal usually adopts an Orthogonal Frequency Division Multiplexing (OFDM) waveform to carry sensing data. However, in 5G and future communications, due to the requirements of hardware or devices on the time domain peak to average ratio (PAPR), a single carrier waveform with a lower time domain PAPR, such as a Discrete Fourier transfrom-spreading OFDM (DFT-s-OFDM) waveform, will be used as an alternative waveform for the sensing signal to carry data. However, due to the non-constant modulus characteristic of the frequency domain of the single carrier waveform, the sensing performance of the sensing signal using this waveform will be greatly reduced (showing a higher frequency domain PAPR) compared to the sensing signal using the OFDM waveform with a constant modulus characteristic in the frequency domain. Therefore, how to improve the sensing performance of the sensing signal using the single carrier waveform to carry sensing data is a problem that needs to be solved urgently. SUMMARY

[0006] The application provides a communication method and device to improve the communication performance and sensing performance of a single carrier signal and improve the user experience in an ISAC scenario.

[0007] In a first aspect, the application provides a communication method, which is used for a first device and includes:

[0008] amplitude adjusting part of the subcarriers of the first data signal in the frequency domain to obtain a second data signal; wherein the first signal includes the first data signal and a reference signal; the reference signal is located at a different time domain position from the first data signal;

[0009] outputting a second signal, which includes the second data signal and the reference signal;

[0010] wherein the first data signal is a single carrier signal; the first data signal and the second data signal are used for communication and sensing.

[0011] Through the above implementation, amplitude adjustment is made on part of the subcarriers of the data signal in the frequency domain instead of all the subcarriers, thereby achieving a relative balance between the sensing performance and the communication performance of the single carrier signal and improving the user experience compared with amplitude adjustment on all the subcarriers.

[0012] In a possible implementation, the method further includes: generating a third signal based on the second signal; the third signal is a signal emitted by the first device from an antenna port port; the third signal includes data sent to a second device; a back echo signal of the third signal is used for target detection.

[0013] In a possible implementation, the amplitude adjusting part of the subcarriers of the first data signal in the frequency domain to obtain a second data signal specifically includes: amplitude adjusting on the subcarriers with a fixed interval in the first data signal.

[0014] In a possible implementation, the amplitude adjusting on the subcarriers with a fixed interval in the first data signal specifically includes:

[0015] determining a carrier starting position and a fixed interval D in the subcarriers of the first data signal; wherein, the M represents the number of subcarriers of the first data signal, the P represents the number of sensing targets, the fixed interval D is a positive integer greater than 0 and less than a preset threshold A.

[0016] In a possible implementation, the method further includes:

[0017] After determining the fixed interval D, calculating the power offset of the reference signal.

[0018] In a possible implementation, the calculating the power offset of the reference signal specifically includes:

[0019] obtaining a power change value α of the first data signal; and wherein,

[0020] α = sng(x1-K)(|x1-K|) 2 +sng(x2-K)(|x2-K|) 2 +…+sng(x M / D -K)(|x M / D -K|) 2 , x1,x2,…x M / D are amplitude values corresponding to respective subcarriers of the first data signal; K represents a threshold value of amplitude adjustment; sng(z) is a numerical operator,

[0021] sng(z) = 0 when z = 0;

[0022] sng(z) = 1 when z > 0;

[0023] sng(z) = -1 when z < 0.

[0024] In a possible implementation, the amplitude adjusting the part of subcarriers of the first data signal in the frequency domain to obtain the second data signal specifically includes:

[0025] amplitude adjusting the subcarriers of the first data signal at a non-fixed interval.

[0026] In a possible implementation, the amplitude adjusting the subcarriers of the first data signal at a non-fixed interval specifically includes:

[0027] amplitude adjusting m subcarriers with the lowest signal amplitude in M subcarriers in the first data signal, where m is less than M.

[0028] In a possible implementation, the method further includes:

[0029] after determining the m subcarriers, calculating the power offset of the reference signal.

[0030] In a possible implementation, the calculating the power offset of the reference signal specifically includes:

[0031] obtaining a power change value α of the first data signal; and wherein,

[0032] K represents a threshold value of amplitude adjustment; sng(z) is a numerical operator,

[0033] sng(z) = 0 when z = 0;

[0034] sng(z) = 1 when z > 0;

[0035] sng(z) = -1 when z < 0.

[0036] In a possible implementation, the carrier starting position, the fixed interval D, and the power offset multiple of the reference signal are indicated by the DCI. through the DCI.

[0037] In a possible implementation, the index of the m subcarriers and the power offset multiple of the reference signal are indicated by the DCI. through the DCI.

[0038] In a possible implementation, the reference signal includes a demodulation reference signal DMRS.

[0039] In a possible implementation, the waveform of the single-carrier signal includes a DFT-S-OFDM waveform.

[0040] In a second aspect, the present application provides a communication device, comprising: a processor configured to execute a computer program or instructions stored in a memory; and the memory configured to store the computer program or the instructions; when the computer program or the instructions and the processor are executed, the method in the first aspect is implemented.

[0041] In a third aspect, the present application provides a computer readable storage medium, the computer readable storage medium storing a computer program or instructions, so that when the computer program or instructions are executed by a computer, the method in the first aspect is implemented.

[0042] In a fourth aspect, the present application provides a computer program product, the computer program product comprising instructions for executing the method in the first aspect.

[0043] In a fifth aspect, the present application provides a communication system, the system comprising a first device and a second device; the first device is configured to implement the method in the first aspect; and the second device is configured to receive the third signal.

[0044] On the basis of the implementation of the above aspects, the present application can be further combined to provide more implementations. BRIEF DESCRIPTION OF DRAWINGS

[0045] FIG. 1 to FIG. 3 and FIG. 5 are schematic diagrams of a communication system suitable for embodiments of the present application;

[0046] FIG. 4 is a schematic diagram of a possible time-frequency resource distribution of a signal;

[0047] FIG. 6 is a block diagram of a typical NR OFDM / DFT-s-OFDM system implementation;

[0048] FIG. 7 is a schematic diagram of a possible subcarrier amplitude adjustment scheme for a first data signal;

[0049] FIG. 8 is a flowchart of a communication method provided by embodiments of the present application;

[0050] FIG. 9 is a schematic diagram of a possible time-frequency resource distribution of a first signal / second signal;

[0051] FIG. 10A-10B are schematic diagrams of a possible subcarrier amplitude adjustment scheme for a first data signal provided by embodiments of the present application;

[0052] FIG. 11 is a schematic diagram of another possible subcarrier amplitude adjustment scheme for a first data signal provided by embodiments of the present application;

[0053] FIG. 12 is a signal flow diagram provided by embodiments of the present application;

[0054] FIG. 13 is a comparison diagram of sensing performance of data signals under three amplitude adjustment schemes provided by embodiments of the present application;

[0055] FIG. 14 is a comparison diagram of communication performance of data signals under three amplitude adjustment schemes provided by embodiments of the present application;

[0056] FIG. 15 is a schematic block diagram of a communication apparatus provided by embodiments of the present application;

[0057] FIG. 16 is a schematic block diagram of another communication apparatus provided by embodiments of the present application;

[0058] FIG. 17 is a schematic block diagram of a chip system provided by embodiments of the present application;

[0059] FIG. 18 is a schematic block diagram of another chip system provided by embodiments of the present application. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described in further detail below with reference to the drawings. The specific operation methods, function descriptions and the like in the method embodiments can also be applied to the apparatus embodiments or system embodiments.

[0061] (1) In the present application, the terms and / or descriptions among different embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0062] (2) In the present application, "at least one" means one or more, and "multiple" means two or more. The association relationship of "and / or" describing the associated objects means that there can be three kinds of relationships, for example, A and / or B can represent the following cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. In the literal description of the present application, the character " / " generally represents an "or" relationship between the front and rear associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single item or multiple items. For example, at least one of a, b and c can represent: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c. Where a, b and c can be single or multiple.

[0063] (3) In the present application, "first", "second", and various number designations (for example, #1, #2, etc.) indicate the differentiation for the convenience of description, and are not used to limit the scope of the embodiments of the present application. For example, different messages are distinguished, rather than used to describe a specific order or sequence. The objects thus described can be interchanged as appropriate to describe schemes other than the embodiments of the present application.

[0064] (4) In the present application, the descriptions such as "when", "in the case of", and "if" mean that the device will make corresponding processing under certain objective circumstances, and are not limited to time, and do not require the device to have a judgment action when implemented, nor does it mean that there are other limitations.

[0065] (5) In the present application, "indicate" or "for indicating" can include direct indication and indirect indication. When describing that certain indication information is used to indicate A, it can include that the indication information directly indicates A or indirectly indicates A, and it does not mean that A must be carried in the indication information.

[0066] The indication manner related in the embodiments of the present application should be understood as covering various methods that can make the to-be-indicated party know the to-be-indicated information. The to-be-indicated information can be sent as a whole, or can be sent separately into multiple sub-information, and the sending period and / or sending opportunity of these sub-information can be the same or different, and the present application does not limit the sending method.

[0067] The indication information in the embodiments of the present application can be explicit indication, that is, directly indicated through signaling, or obtained according to the parameters indicated by the signaling, in combination with other rules or in combination with other parameters or by derivation. It can also be implicit indication, that is, obtained according to rules or relationships, or according to other parameters, or by derivation. The present application does not make specific limitations on this.

[0068] (6) In the present application, "protocol" can refer to a standard protocol in the communication field, which can include 5G protocol, NR protocol and related protocols applied in future communication systems, and the present application does not make limitations on this. "Predefined" can include predefinition. For example, protocol definition. "Preconfigured" can be realized by pre-saving the corresponding code, table or other means that can be used to indicate related information in the device, and the present application does not make limitations on the implementation manner thereof.

[0069] (7) In the present application, "communication" can also be described as "communication", "information transmission", "data processing" and the like. "Transmission" includes "sending" and "receiving". "Transmission" can be described as "output". In the present application, "message", "information", "signal" or "information element (IE)" and the like can be used interchangeably, and the name of the message or information is not limited in any way as long as the corresponding function can be realized.

[0070] "Sending information to XX (device)" can be understood as that the destination of the information is the device. It can include directly or indirectly sending information to the device. "Receiving information from XX (device), or receiving information from XX (device)" can be understood as that the source of the information is the device, which can include directly or indirectly receiving information from the device. The information can be processed as necessary between the source and the destination of the information transmission, such as format change, etc., but the destination can understand the valid information from the source. Similar expressions in the present application can be understood similarly, and will not be repeated here. In addition, "sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface. In other words, "sending" or "receiving" can be carried out between devices, for example, sending or receiving through the air interface between network devices and terminal devices, and "sending" or "receiving" can also be carried out within the device, for example, sending or receiving between components, modules, chips, software modules or hardware modules within the device through a bus, wire or interface.

[0071] (8) In the present application, the words such as "exemplarily", "for example" and the like are used to represent examples, illustrations or descriptions. Any embodiment or design scheme described as "example" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the word "example" is used to present the concept in a specific way. In the embodiments of the present application, "of", "corresponding", "corresponding" and "associated" are sometimes used interchangeably, and it should be pointed out that when their differences are not emphasized, the meanings they express are consistent.

[0072] (9) In the present application, when comparing A and B, the description of "when A is greater than or equal to B, execution mode A is performed, and when A is less than or equal to B, execution mode B is performed" can be "when A is greater than or equal to B, execution mode A is performed, or when A is less than B, execution mode B is performed", or "when A is greater than B, execution mode A is performed, or when A is less than or equal to B, execution mode B is performed", which is not limited in the present application. In order to facilitate description, the implementation mode provided in the present application is described by taking "when A is greater than or equal to B, execution mode A is performed, or when A is less than B, execution mode B is performed" as an example.

[0073] (10) In the present application, the configuration can be signaling configuration, which can also be described as configuration signaling. For example, the signaling configuration includes configuration by signaling sent by the base station, which can be radio resource control (RRC) message, downlink control information (DCI), or system information block (SIB). Alternatively, the signaling configuration can also be configured to the terminal device by pre-configured signaling, or configured to the terminal device by pre-configuration. Here, pre-configuration is to define or configure the value of the corresponding parameter in advance in the protocol, and store it in the terminal device when communicating with the terminal device. The pre-configured message can be modified or updated under the condition that the terminal device is connected to the network.

[0074] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0075] The technical solutions provided in the present application can be applied to various communication systems, such as a 5th generation (5G) or new radio (NR) system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, and the like, and a future communication system. The technical solutions provided in the present application can also be applied to a device to device (D2D) communication system, a vehicle-to-everything (V2X) communication system, a machine to machine (M2M) communication system, a machine type communication (MTC) system, and an internet of things (IoT) communication system. The technical solutions provided in the present application can also be applied to a low-frequency scenario, a high-frequency scenario, a terahertz, optical communication, a licensed frequency band, and an unlicensed frequency band, and the like.

[0076] FIG. 1 is a schematic diagram of a communication system to which embodiments of the present application are applicable. As shown in FIG. 1, the communication system 10 includes a radio access network (RAN) 100 and a core network (CN) 200. The RAN 100 includes at least one RAN node (e.g., 110a and 110b in FIG. 1, collectively referred to as 110) and at least one terminal (e.g., 120a-120j in FIG. 1, collectively referred to as 120). The RAN 100 can further include other RAN nodes, such as a wireless relay device and / or a wireless backhaul device (not shown in FIG. 1), and the like. The terminal 120 is connected to the RAN node 110 in a wireless manner. The RAN node 110 is connected to the core network 200 in a wireless or wired manner. The core network device in the core network 200 and the RAN node 110 in the RAN 100 can be different physical devices, respectively, or can be the same physical device integrated with the logical functions of the core network and the radio access network.

[0077] The RAN 100 can be a 3rd generation partnership project (3GPP) related cellular system, e.g., a 4G mobile communication system, a 5G mobile communication system, or a future mobile communication system. The RAN 100 can also be an open radio access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. The RAN 100 can also be a communication system that combines two or more of the above systems.

[0078] The RAN node 110, which can also be referred to as an access network device, a RAN entity, or an access node, etc., forms part of the communication system, and is configured to facilitate wireless access by terminals. The RAN nodes 110 in the communication system 100 can be of the same type or of different types. In some scenarios, the roles of the RAN node 110 and the terminal 120 are relative, e.g., the network element 120i in Figure 1 can be a helicopter or a drone, which can be configured to be a mobile base station. For a terminal 120j that accesses the RAN 100 via the network element 120i, the network element 120i is a base station. But for the base station 110a, the network element 120i is a terminal. The RAN nodes 110 and the terminals 120 are sometimes referred to as communication apparatuses, e.g., the network elements 110a and 110b in Figure 1 can be understood as communication apparatuses with base station functionalities, and the network elements 120a-120j can be understood as communication apparatuses with terminal functionalities.

[0079] In a possible scenario, the RAN node can be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a base station in a future mobile communication system, or an access node in a WiFi system, etc. The RAN node can be a macro base station (e.g., 110a in Figure 1), a micro base station or an indoor station (e.g., 110b in Figure 1), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the RAN node can also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, the access network device in vehicle to everything (V2X) technology can be a road side unit (RSU).

[0080] In another possible scenario, multiple RAN nodes cooperate to assist a terminal to implement wireless access, and different RAN nodes respectively implement part of functions of a base station. For example, a RAN node can be a central unit (CU), a distributed unit (DU), a CU-control plane (CU-CP), a CU-user plane (CU-UP), a radio unit (RU), or a CU-radio unit (CU-RU), etc. The CU and the DU can be separately arranged, or can be included in the same network element, for example, in a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, for example, in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0081] In different systems, the CU (including an open CU-CP (O-CU-CP) and an open CU-UP (O-CU-UP), the DU, or the RU can also have different names, but those skilled in the art can understand their meanings. For example, in an ORAN system, the CU can also be referred to as an open central unit (O-CU), the DU can also be referred to as an open distributed unit (O-DU), the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, and the RU can also be referred to as an O-RU. For the convenience of description, the CU, the CU-CP, the CU-UP, the DU, and the RU are taken as examples for description in this application. Any one of the CU (or the CU-CP, the CU-UP), the DU, and the RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0082] The terminal 120 can be a device or module with corresponding communication functions for accessing the above-mentioned communication system. The terminal can also be referred to as user equipment (UE), terminal, user device, access terminal, user unit, user station, mobile station, mobile station (MS), remote station, remote terminal, mobile device, user terminal, terminal unit, terminal station, terminal device, wireless communication device, user agent, or user apparatus. The terminal is usually provided with a communication module, circuit or chip for performing corresponding communication functions. The terminal is also configured with program instructions for performing corresponding communication functions.

[0083] For example, the terminal in the embodiments of the present application can be a mobile phone, a personal digital assistant (PDA) computer, a laptop computer, a tablet computer (Pad), a drone, a computer with wireless transceiver function, a machine type communication (MTC) terminal, a virtual reality (VR) terminal, an augmented reality (AR) terminal, an internet of things (IoT) terminal, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home (such as game consoles, smart televisions, smart speakers, smart refrigerators and fitness equipment, etc.), a transport vehicle with wireless communication function, a communication module, a roadside unit (RSU) with terminal function.

[0084] The RAN 100 and the terminal 120 can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; can also be deployed on the water surface; can also be deployed on aircraft, balloons and satellites in the air. The scene where the RAN 100 and the terminal 120 are located is not limited in the embodiments of the present application.

[0085] The CN 200 can be a 5G core network, an evolved 5G core network, or a future core network. Taking the 5G core network as an example, the CN 200 includes an access and mobility management function (AMF) network element responsible for services such as mobility management and access management, a session management function (SMF) network element responsible for session management, a user plane function (UPF) network element responsible for user plane packet routing and forwarding and quality of service (QoS) control, a policy control function (PCF) network element, and the like. The above core network elements can work independently or can be combined together to implement certain control functions, for example, the AMF, the SMF, and the PCF can be combined together as a core network device.

[0086] The technical solutions provided in the present application can also be applied to a non-terrestrial communication network (NTN) system, such as an inter-satellite communication system, a satellite communication system, a high altitude platform station (HAPS) communication, an integrated communication and navigation (ICaN) system, or a global navigation satellite system (GNSS), etc.

[0087] FIG. 2 is a schematic diagram of another communication system suitable for the embodiments provided in the present application. As shown in FIG. 2, the satellite communication system includes a satellite base station, a terminal device, a gateway (GW), a core network, a new radio, an Xn interface, and an NG interface, etc. For example, the satellite base station 1 can provide communication services for the terminal device through the new radio, or communicate with the satellite base station 2 through the Xn interface, or communicate with the ground base station through the NG interface. The ground base station can communicate with the core network. Optionally, the satellite base station 1 or the satellite base station 2 can be a CU or a DU or a RU, or an O-RAN node carried on a satellite.

[0088] FIG. 3 is a schematic diagram of another communication system according to embodiments of the present application. As shown in FIG. 3, the inter-satellite communication system includes satellite 1 and satellite 2, and satellite 1 and satellite 2 can exchange information through a channel. Satellite 1 and satellite 2 each include a communication module, a transceiver antenna, an APT module, and an APT transmitting / receiving antenna. The communication module is responsible for information transmission between satellite 1 and satellite 2 and is the main body of the inter-satellite communication system. The APT module is responsible for acquisition, alignment, and tracking between satellite 1 and satellite 2. Acquisition determines the direction of arrival of an incident signal, alignment adjusts the direction of a transmitted wave to aim at a receiving direction, and tracking constantly adjusts alignment and acquisition during the entire communication process. Optionally, the satellite can be a drone, a hot air balloon, a low-orbit satellite, a medium-orbit satellite, or a high-orbit satellite, etc.

[0089] In the above communication system, one device can send a signal to another device or receive a signal from another device. The signal can include a reference signal, information, signaling, or data, etc. In this application, the device can be replaced by an entity, a network entity, a communication device, a communication module, a node, a communication node, etc.

[0090] It can be understood that the above naming is only defined for the convenience of distinguishing different functions and should not constitute any limitation on the present application. The present application does not exclude the possibility of using other names in 5G networks and future other networks. For example, in future communication networks, part or all of the above network elements can use the terms in 5G, or other names, etc.

[0091] The communication systems shown in FIGS. 1 to 3 and the business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application and do not constitute any limitation on the technical solutions provided by the embodiments of the present application. It can be known by those skilled in the art that, with the evolution of network architecture and the appearance of new business scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0092] In order to facilitate understanding of the embodiments of the present application, the terms involved in the present application are briefly explained as follows.

[0093] 1. Perception signal:

[0094] Perception is a process of collecting, processing collected data, and generating a perception result. For example, the distance, shape, and type of a surrounding obstacle are determined by collecting data, and for another example, the breathing rate and heartbeat of a monitored object are determined by collecting data. The collected data can be data collected by a sensor or data collected by a wireless signal. The signal with perception and communication capabilities is called a perception signal, and the data carried in the perception signal is called perception data.

[0095] Fig. 4 shows a schematic diagram of a signal resource. The horizontal axis represents the time domain (e.g., OFDM symbol), and the vertical axis represents the frequency domain (e.g., subcarrier). The shaded squares can be used for sensing and communication (e.g., for channel estimation and data transmission), which can be referred to as sensing signals. The blank squares can be used only for communication, which can be referred to as regular signals. As shown in (a) of Fig. 4, for the same OFDM symbol, two adjacent sensing signals are spaced apart by 2 subcarriers, i.e., the sensing signals are uniformly spaced. As shown in (b) of Fig. 4, for the same OFDM symbol, two adjacent sensing signals can be spaced apart by 2 or 4 subcarriers, i.e., the sensing signals are non-uniformly spaced. As shown in (c) of Fig. 4, for the same OFDM symbol, two adjacent sensing signals can contain 1 or 4 subcarriers, i.e., the sensing signals are variably spaced. A plurality of sensing signals form a sensing signal group. For example, in (a)-(c) of Fig. 4, each shaded square is a sensing signal, and the shaded squares in the same column form a sensing signal group.

[0096] 2. Sensing scenario

[0097] The sensing scenario can include a network device-based sensing scenario, a network device and terminal device-based sensing scenario, and a terminal device-based sensing scenario.

[0098] Fig. 5 is a schematic diagram of a sensing scenario according to an embodiment of the present application.

[0099] As shown in (1) of Fig. 5, the network device-based sensing scenario (or base station self-transmission and self-reception) is that the network device serves as the transmitting end (Tx) and receiving end (Rx) of the sensing signal. For example, sensing signal 1 transmitted by the network device reaches a sensing target or target object (e.g., a vehicle), sensing signal 1 is reflected or scattered by the target object, and the network device can receive sensing signal 2, which can be processed to obtain a sensing result. That is, the network device knows what it has transmitted, for example, the sensing data transmitted by the network device can also serve as a sensing signal.

[0100] As shown in (2) of Fig. 5, the network device-based sensing scenario (or base station A transmits and base station B receives) is that one network device serves as the transmitting end of the sensing signal, and another network device serves as the receiving end of the sensing signal. For example, sensing signal 1 transmitted by network device A reaches a sensing target or target object (e.g., a vehicle), sensing signal 1 is reflected or scattered by the target object, and network device B can receive sensing signal 2, which can be processed to obtain a sensing result.

[0101] As shown in (3) of FIG. 5, the sensing scenario based on the network device and the terminal device (or base station transmits and terminal receives), that is, the network device as the transmitting end of the sensing signal and the terminal device as the receiving end of the sensing signal. For example, the sensing signal 1 transmitted by the network device reaches the sensing target or target object (for example, a car), the sensing signal 1 is reflected or scattered by the target object, and the terminal device can receive the sensing signal 2, and then the terminal device can perform sensing processing on the sensing signal 2 to obtain a sensing result.

[0102] As shown in (4) of FIG. 5, the sensing scenario based on the network device and the terminal device (or terminal transmits and base station receives), that is, the terminal device as the transmitting end of the sensing signal and the network device as the receiving end of the sensing signal. For example, the sensing signal 1 transmitted by the terminal device reaches the sensing target or target object (for example, a car), the sensing signal 1 is reflected or scattered by the target object, and the network device can receive the sensing signal 2, and then the network device can perform sensing processing on the sensing signal 2 to obtain a sensing result.

[0103] As shown in (5) of FIG. 5, the sensing scenario based on the terminal device (or terminal self-transmits and self-receives), that is, the terminal device as the transmitting end and the receiving end of the sensing signal. For example, the sensing signal 1 transmitted by the terminal device reaches the sensing target or target object (for example, a car), the sensing signal 1 is reflected or scattered by the target object, and the terminal device can receive the sensing signal 2, and then the terminal device can perform sensing processing on the sensing signal 2 to obtain a sensing result. That is, the terminal device knows what it transmits, for example, the sensing data transmitted by the terminal device can also be used as a sensing signal.

[0104] As shown in (6) of FIG. 5, the sensing scenario based on the terminal device (or terminal A transmits and terminal B receives), that is, one terminal device as the transmitting end of the sensing signal and another terminal device as the receiving end of the sensing signal. For example, the sensing signal 1 transmitted by the terminal device a reaches the sensing target or target object (for example, a car), the sensing signal 1 is reflected or scattered by the target object, and the terminal device b can receive the sensing signal 2, and then the terminal device b can perform sensing processing on the sensing signal 2 to obtain a sensing result.

[0105] In the above scenarios, the sensing signal 2 can be understood as a reflected or scattered signal of the sensing signal 1, and the sensing signal 2 carries more information than the sensing signal 1, for example, the sensing signal 2 can carry source information and environmental information. Alternatively, the number of sensing signals transmitted by the transmitting end is not limited in the present application.

[0106] In the absence of special description herein, the first device is described as the execution subject. The first device can be understood as a terminal, a device with terminal function, or a device implementing terminal function. For example, the first device is a terminal, or the first device can be a module (such as a chip or a circuit, etc.) in the terminal. Alternatively, the first device can be understood as a network device, a device with network device function, or a device implementing network device function. For example, the first device is a base station, or the first device can be a module (such as a chip or a circuit, etc.) in the base station, or a module or unit (such as a CU, a DU, or a RU) implementing all or part of the base station function, a logic module, or software, etc. Alternatively, the first device can be understood as a device or apparatus with sensing capability, or a device or apparatus capable of performing artificial intelligence tasks. The device with sensing capability can also be referred to as a sensing device, and the device capable of performing artificial intelligence tasks can also be referred to as an artificial intelligence task execution device.

[0107] The second device can be understood as a terminal, a device with terminal function, or a device implementing terminal function. For example, the second device is a terminal, or the second device can be a module (such as a chip or a circuit, etc.) in the terminal. Alternatively, the second device can be understood as a network device, a device with network device function, or a device implementing network device function. For example, the second device is a base station, or the second device can be a module (such as a chip or a circuit, etc.) in the base station, or a module or unit (such as a CU, a DU, or a RU) implementing all or part of the base station function, a logic module, or software, etc. Alternatively, the second device can be understood as a device or apparatus with sensing capability, or a device or apparatus capable of performing artificial intelligence tasks. The device with sensing capability can also be referred to as a sensing device, and the device capable of performing artificial intelligence tasks can also be referred to as an artificial intelligence task execution device.

[0108] 3. Integrated sensing and communication (ISAC):

[0109] Integrated sensing and communication can be referred to as integrated sensing and communication (ISAC) or joint communication and sensing (JCAS). ISAC refers to the integration of communication and sensing functions, so that the future communication system has both communication and sensing functions. While transmitting information over the wireless channel, the characteristics of the channel are actively recognized and analyzed to perceive the physical characteristics of the surrounding environment, thereby enhancing the communication and sensing functions. Compared with a system in which sensing and communication are separated, ISAC has a series of advantages, such as cost savings, reduced device size, reduced power consumption, improved frequency efficiency, reduced mutual interference between communication and sensing, etc. In ISAC communication, the signal used for communication and sensing is referred to as a sensing signal, and the data carried in the sensing signal is referred to as sensing data.

[0110] 4. Antenna port (Port):

[0111] An antenna port is a logical concept. One antenna port can correspond to one physical transmit antenna, or can correspond to multiple physical transmit antennas. In both cases, the receiver of the terminal does not resolve signals from the same antenna port. Because from the perspective of the terminal, whether the channel is formed by a single physical transmit antenna, or is combined by multiple physical transmit antennas, the reference signal (RS) corresponding to the antenna port defines the antenna port, for example, the DMRS port corresponding to the demodulation reference signal (DMRS), and the terminal can obtain the channel estimation of the corresponding antenna port according to the reference signal. Each antenna port corresponds to a time / frequency resource grid, and has its own reference signal. An antenna port is a channel, and the terminal performs channel estimation and data demodulation according to the reference signal corresponding to the antenna port.

[0112] An antenna port is usually associated with a reference signal, and its meaning can be understood as a transceiving interface on the channel experienced by the reference signal. For a low-frequency system, one antenna port can correspond to one or more antenna elements, and these elements jointly transmit the reference signal, and the receiving end can regard them as a whole, without the need to distinguish these elements. For a high-frequency system, an antenna port can correspond to a beam, and similarly, the receiving end only needs to regard the beam as an interface, without the need to distinguish each element.

[0113] In the embodiments of the present application, the antenna port can also be referred to as a port, and the set corresponding to multiple antenna ports can be referred to as a port group. For example, multiple digital ports of a base station are grouped to form multiple port groups. For another example, a port group can be multiple digital ports corresponding to a same analog beam, which is referred to as a port group or a digital-analog port group; or a port group can be a set of digital ports corresponding to multiple analog beams, which is referred to as a port group or a digital-analog port group. Alternatively, multiple digital ports of a same analog beam are divided into multiple subsets, and each subset is referred to as a port group or a digital-analog port group.

[0114] 5. Orthogonal Frequency Division Multiplexing (OFDM):

[0115] A typical block diagram of NR OFDM system is shown in Fig. 6. In which, the signal {S(p)} is the frequency domain signal. As shown in Fig. 6, the serial-to-parallel (S / P) module converts M consecutive data S(kM), S(kM+1), …, S(kM+M-1) into an M-dimensional data block S k = [S(kM), S(kM+1), …, S(kM+M-1)] T , in which the subscript k is the OFDM symbol index, and the superscript T represents the transpose; through subcarrier mapping, S k carries M data to modulate N sc subcarriers of N sc = M subcarriers, and the remaining (N-N sc ) subcarriers can be understood as being modulated by data 0. The N-dimensional data vector X k is obtained by N-point IDFT to obtain a set of N complex time domain sampling points x k = [x k (0), x k (1), …, x k (N-1)] T .

[0116] In which, x k (n), n = 0, 1, …, N-1 can be written as:

[0117] In which, X k (n'), n' = 0, 1, …, N-1 represents the output of the subcarrier mapping module, e represents Euler's constant, j represents the imaginary unit, j 2 = -1. The subcarrier mapping rule is as follows:

[0118] In which, n0 is an integer, S k (l) is the lth element of S k , l = 0, 1, …, N sc -1.

[0119] The next important operation to generate OFDM signal is to insert a guard interval at the start of each OFDM symbol, which can eliminate the inter-symbol interference (ISI) caused by multipath propagation (the propagation phenomenon that the radio signal reaches the receiver through two or more paths). The guard interval is obtained by adding a cyclic prefix (CP) at the beginning of the symbol. The specific implementation is to copy the last G samples of x k and append them at the beginning of x k to obtain the time domain OFDM signal Thus one OFDM symbol contains valid data x k and a cyclic prefix (redundant data).

[0120] At the receiving end, the OFDM signal is demodulated by inverse processing. Assuming time and frequency synchronization is available and the CP length is sufficient, after CP removal (i.e. the first G samples of the received signal are removed), a data block with N samples is obtained, which is also equal to the OFDM symbol x k and a cyclic convolution with the channel impulse response. The time domain cyclic convolution can be converted to a frequency domain point multiplication by DFT, and then the channel equalization can be completed by frequency domain single tap equalization with low complexity.

[0121] S k The modulation symbols can include modulation symbols and / or redundant signal sampling points. The modulation symbols can be modulation symbols obtained by modulating a (coded) bit stream. The modulation methods can include pulse amplitude modulation (PAM), phase shift keying (PSK), quadrature amplitude modulation (QAM), amplitude phase shift keying (APSK), etc.

[0122] The redundant signal sampling points can include phase tracking reference signal (PTRS) sampling points, demodulation reference signals, tone reservation signals, etc.

[0123] It can be understood that when the transform point number N satisfies certain constraints, such as N being a power of 2, 3, 5, etc., the IDFT can also be implemented by an efficient inverse fast fourier transform (IFFT). Correspondingly, the DFT can also be implemented by an efficient FFT. In the following, IDFT and IFFT can be interchangeable, and DFT and fast fourier transform (FFT) can be interchangeable.

[0124] N sc It can be understood as the number of subcarriers in the transmission bandwidth. In the above, N sc = M. It should be understood that N sc may also be greater than M. For example, the remaining (N sc -M) subcarriers carry redundant signals to achieve other purposes, such as reducing the PAPR of the signal.

[0125] 6、Discrete Fourier Transform spreading OFDM (DFT-s-OFDM):

[0126] As shown in FIG. 6, DFT-s-OFDM defines a data block s k Before the OFDM processing process, there is an additional DFT (Discrete Fourier Transform) processing, that is, for each data block s k containing M data, an M-point DFT operation is performed to obtain S k Through this operation, the DFT-s-OFDM signal has the characteristics of a single carrier, and has a peak to average power ratio (PAPR) much lower than that of a multi-carrier signal such as OFDM. Therefore, under the same power amplifier, DFT-s-OFDM can provide greater output amplitude and higher power amplifier efficiency, thereby achieving the purpose of improving coverage and reducing energy consumption. The coverage and power consumption advantages of DFT-s-OFDM are particularly evident on the terminal device side, so in the existing versions of LTE and NR, DFT-s-OFDM is applied to uplink transmission.

[0127] wherein s k may include modulation symbols and / or redundant signal sampling points. The modulation symbols can be modulation symbols obtained by modulating a (coded) bit stream. The modulation method can include PAM, PSK, QAM, offset quadrature amplitude modulation (OQAM), APSK, etc. The redundant signal sampling points can include PTRS sampling points, unique words, zeros, etc.

[0128] 7、Peak to Average Power Ratio (PAPR):

[0129] Peak to average power ratio, or peak to average power ratio, literally means the ratio of peak power to average power. For a signal x(t), the peak power of the signal in a certain time interval (such as t0 to t1) is and the average power is The PAPR can be expressed as:

[0130] Among them, the communication signal (including OFDM, DFT-s-OFDM signal) is a random signal, the mean power of which can be regarded as a fixed value, and the peak power is indeed a random variable. Therefore, the PAPR is also a random variable. In statistics, the value of a random signal at a certain time is often described by the probability density function. In the communication industry, engineers often use the complementary cumulative distribution function (complementary cumulative distribution function, CCDF) curve to describe the PAPR: the probability of the instantaneous power exceeding the mean amplitude xx dB is yy, or the proportion of the time when the instantaneous power exceeds the mean power xx dB in the total time is yy, which can be expressed by the formula:

[0131] Where P(·) represents the probability. In the PAPR graph, the horizontal axis corresponds to xx, and the vertical axis corresponds to yy.

[0132] The higher the PAPR of the PA input signal x(t), the greater the range of input power fluctuation, and the more power value needs to be backed off to ensure that the signal is within the linear amplification range. Therefore, designing a signal with low PAPR can reduce the power amplifier output backoff (PA OBO), improve the transmission power, and improve the coverage.

[0133] 8, Demodulation reference signal (Demodulation Reference Signal, DMRS):

[0134] In a wireless communication system, a reference signal (RS) is a predefined signal transmitted by a transmitting device on predefined resources to a receiving device. The reference signal includes, but is not limited to, a channel state information reference signal (CSI-RS), a phase tracking reference signal (PT-RS), a sounding reference signal (SRS), a cell-specific reference signal (CRS), and a demodulation reference signal (DMRS). The receiving device can obtain channel-related information according to the received reference signal, complete channel estimation or channel measurement. The channel measurement result can be used for resource scheduling and link adaptation, and the channel estimation result can be used for the receiving device to demodulate data. Generally, in order to accurately obtain channel-related information, different reference signals need to be orthogonal. Time division, frequency division, or code division can be used to provide multiple orthogonal reference signals. The information is sent from the transmitting end, received at the receiving end after passing through the transmission channel. Because the information may change (noise, fading, etc.) in the transmission channel, the received information may differ from the transmitted information. In order to accurately restore the correct information, it is necessary to understand which changes the information has undergone in the transmission process, so the reference signal is introduced. The transmitting end and the receiving end agree on a known signal (RS) in advance, which is transmitted together with the information to be transmitted in the transmission channel. After receiving the signal (RS'), the receiving end can understand the changes of the information in the transmission channel by comparing the difference between RS and RS', estimate the channel characteristics, and obtain the channel characteristics H. According to the channel characteristics H, the received information can be restored to the correct transmitted information. The demodulation reference signal (DMRS) is used for channel estimation during demodulation. In LTE, NR, and even future wireless communication, DMRS can be used for channel estimation during data demodulation in the physical downlink shared channel (PDSCH) and the physical uplink shared channel (PUSCH). The PDSCH is used to transmit downlink data, and the PUSCH is used to transmit uplink data.

[0135] For ease of description, the following describes the case in the PDSCH.

[0136] The above description of the terms is only for the convenience of those skilled in the art and does not constitute a limitation on the scope of protection of the embodiments of the present application.

[0137] In a communication system, higher frequency bands (millimeter waves or even terahertz), wider bandwidths, and larger-scale antenna arrays make high-precision, high-resolution sensing possible, thereby realizing integrated sensing and communication (ISAC) and making communication and sensing functions complementary. The demand for communication is simply to send information from the sending end to the receiving end. The demand for sensing is simply to sense the surrounding environment, the moving speed of an object, or the distance, etc. The most traditional sensing is traditional radar.

[0138] In ISAC communication, the sensing signal usually adopts an OFDM waveform to carry sensing data. However, in 5G and future communications, due to the requirements of hardware or devices on the time-domain PAPR, a single-carrier waveform with a lower time-domain PAPR, such as a DFT-s-OFDM waveform, will be used as an alternative for the sensing signal to carry data. However, due to the non-constant modulus characteristic of the frequency domain of the single-carrier waveform, the sensing performance of the sensing signal using the waveform will be greatly reduced (for example, the frequency-domain PAPR is higher) compared with the sensing signal using the OFDM waveform with a constant modulus characteristic in the frequency domain. Therefore, how to improve the sensing performance of the sensing signal using a single-carrier waveform (such as DFT-s-OFDM) to carry sensing data is a problem that needs to be solved urgently.

[0139] In the prior art, the amplitude of all subcarriers of the sensing signal using the single-carrier waveform is usually adjusted in the frequency domain to improve the sensing performance. For example, as shown in FIG. 7, the amplitude of all subcarriers of the sensing signal using the DFT-s-OFDM waveform is adjusted in the frequency domain. In FIG. 7, the horizontal axis represents the subcarrier index, and the vertical axis represents the signal amplitude of the subcarrier. As can be seen, the horizontal line in the figure is the amplitude threshold line, and the subcarrier amplitude indicated by the small square is larger, so the subcarrier amplitude at this position can be adjusted to the amplitude threshold line position, so as to make the overall signal amplitude more flat, for example, for the subcarrier amplitude higher than the threshold line position, it is caused to fall back to the threshold line position, and for the subcarrier amplitude lower than the threshold line position, it is caused to rise to the threshold line position. It can be understood that, for the convenience of description, only part of the subcarriers are selected for amplitude adjustment description (the subcarriers indicated by the small square) in FIG. 7, and all the subcarriers of the sensing signal using the DFT-s-OFDM waveform are actually adjusted in amplitude (i.e., falling back or rising to the amplitude threshold line) in FIG. 7.

[0140] However, although the amplitude of all subcarriers of the sensing signal is adjusted in the frequency domain, the time-domain PAPR of the sensing signal is deteriorated, thereby reducing the communication performance of the signal.

[0141] It can be seen that how to balance the sensing performance and the communication performance of the sensing signal using the single carrier waveform has not been given a solution. In view of this, the present application provides a communication method and device to balance the sensing performance and the communication performance of the sensing signal using the single carrier waveform, so as to better meet the communication and sensing requirements.

[0142] The communication method provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the embodiments of the present application can be applied to the communication systems shown in FIGS. 1 to 3 and 5. It should be understood that the embodiments of the present application can be applied to the scenarios of communication between the sending end and the receiving end, for example, the embodiments of the present application can be applied to the scenarios of uplink, downlink or sidelink communication.

[0143] The embodiments of the present application do not particularly limit the specific structure of the execution subject of the method provided by the embodiments of the present application, as long as the execution subject can communicate according to the method provided by the embodiments of the present application by running the code or program recording the method provided by the embodiments of the present application. For example, the method provided by the embodiments of the present application can be executed by the first device. In the case of no special description, the first device in the present application can refer to the first device itself (for example, a terminal device or a network device), a component in the first device (for example, a communication module, a processor, a circuit, a chip (such as a modem chip, also known as a baseband chip, or a SoC chip or a SIP chip containing a modem core), or a chip system, etc.), or a logic module or software capable of realizing all or part of the functions of the first device.

[0144] FIG. 8 is a flow diagram of a communication method provided by an embodiment of the present application. As shown in FIG. 8, the present application provides a communication method, which is used for a first device and includes the following steps:

[0145] S801: performing amplitude adjustment on part of the subcarriers of the first data signal in the frequency domain to obtain a second data signal; wherein the first signal includes the first data signal and a reference signal; the reference signal and the first data signal are located at different time domain positions;

[0146] It can be understood that the data signal (for example, the first data signal and the second data signal) in the present application is a sensing signal, which has the ability of sensing and communication. For example, the first data signal and the second data signal both have the ability of sensing and communication, and the data carried thereby contains not only the content required to be obtained by the receiving end, but also can be used for sensing, for example, channel estimation; or the first data signal and the second data signal both have the ability of sensing and communication, and the data carried thereby contains the content required to be obtained by the receiving end and the content used for sensing. The specific implementation can be referred to the content in the above and FIG. 5, which will not be described here.

[0147] In addition, the first signal includes a data signal part (e.g., the first data signal) and a reference signal part (e.g., the reference signal), where the data signal part (e.g., the first data signal) and the reference signal part (e.g., the reference signal) are located at different time domain positions (e.g., different symbols). For example, FIG. 9 shows a time-frequency resource diagram of a possible first signal, where the horizontal axis represents the 0th-13th symbols (with a total length of one time slot), and the vertical axis represents the 0th-11th subcarriers. It can be understood that, for ease of description, FIG. 9 takes the downlink transmission in the port 1000 of the first signal as an example for description. In the figure, the mesh grid resource elements (REs) represent the PDSCH DMRS signals (e.g., the reference signal), the black grid REs represent the PDSCH signals (e.g., the first data signal), and the dot-shaped grid REs represent the unoccupied REs, or the REs that are not mapped into DMRS (Empty REs). As can be seen, the REs corresponding to the 0th-1st, 3rd-13th symbols in the time domain and the 0th-11th subcarriers in the frequency domain are PDSCH REs (used to carry data signals, e.g., the first data signal), the REs corresponding to the 2nd symbol in the time domain and the 0th, 2nd, 4th, 6th, 8th, 10th subcarriers in the frequency domain are PDSCH DMRS REs (used to carry reference signals), and the REs corresponding to the 2nd symbol in the time domain and the 1st, 3rd, 5th, 7th, 9th, 11th subcarriers in the frequency domain are unoccupied REs (or the REs that are not mapped into DMRS). The 2nd symbol can be referred to as a DMRS symbol, and the 0th-1st, 3rd-13th symbols can be referred to as data symbols. It can be understood that FIG. 9 only gives one possible time-frequency resource diagram of the first signal in the present application to facilitate understanding of the present scheme by those skilled in the art, and does not uniquely limit the possible resource diagram of the first signal in the present application. For example, for a mapping type A DMRS time domain structure, the first DMRS symbol is located in the second symbol or the third symbol in the time slot; for a mapping type B DMRS time domain structure, the first DMRS symbol is fixedly mapped in the first symbol of the data transmission resource (PDSCH); in one possible implementation (e.g., the PDSCH DMRS has only one layer, and no other CDM group is scheduled), the REs in the DMRS symbol (e.g., the 2nd symbol in FIG. 9) that are not mapped into DMRS REs can carry data to improve transmission efficiency.

[0148] In one possible implementation, the amplitude adjustment on the part of the subcarriers of the first data signal in the frequency domain to obtain the second data signal specifically includes: amplitude adjustment on the subcarriers with a fixed interval in the first data signal.

[0149] Exemplarily, as shown in FIGS. 10A-10B are schematic diagrams of amplitude adjustment of part of subcarriers of the first data signal with a fixed interval D, specifically, the subcarriers indicated by arrows are amplitude-adjusted, and the interval between each amplitude-adjusted subcarrier is D. In FIG. 10A, the abscissa represents the subcarrier index, and the ordinate represents the subcarrier signal amplitude.

[0150] In a possible implementation, the amplitude adjustment of the subcarriers of the first data signal with the fixed interval D specifically includes:

[0151] determining the carrier start position and the fixed interval D in the subcarriers of the first data signal; wherein, M represents the number of subcarriers of the first data signal, P represents the number of perception targets, the fixed interval D is a positive integer greater than 0 and less than a preset threshold A.

[0152] It can be understood that after the carrier start position and the carrier interval are determined, each carrier to be amplitude-adjusted can be accurately positioned. The number of perception targets P can be expected to be generated by the first device or can be artificially set, which is not limited herein.

[0153] In addition, the fixed interval D should not be too large, otherwise the time domain PAPR of the first data signal will be seriously deteriorated, therefore the fixed interval D needs to be less than the preset threshold A, wherein the preset threshold A can be the lowest threshold at which the deterioration degree of the time domain PAPR of the first data signal exceeds the expectation.

[0154] In a possible implementation, the carrier start position and the fixed interval D are indicated by the DCI. For example, the first device indicates the carrier start position and the fixed interval D of the carrier amplitude-adjusted in the second signal to the second device through the DCI, so as to improve the perception and communication performance of the second device.

[0155] In a possible implementation, the method further includes: after the fixed interval D is determined, calculating the power offset of the reference signal.

[0156] In a possible implementation, the calculation of the power offset of the reference signal specifically includes:

[0157] obtaining the power change value a of the first data signal; and the power offset multiple of the reference signal is wherein,

[0158] a = sng(x1-K)(|x1-K|) 2 +sng(x2-K)(|x2-K|) 2 +...+sng(x M / D -K)(|x M / D -K|)2 x1, x2, … x M / D are the amplitude values corresponding to the respective subcarriers of the first data signal; K represents a threshold value of the amplitude adjustment; sng(z) is a numerical operator,

[0159] When z=0, sng(z)=0;

[0160] When z>0, sng(z)=1;

[0161] When z<0, sng(z)=-1.

[0162] In a possible implementation, the carrier starting position, the fixed interval D, and the power offset multiple of the reference signal are indicated by the DCI. For example, the first device indicates the carrier starting position, the fixed interval D, and the power offset multiple of the reference signal of the subcarriers on which the amplitude adjustment is performed in the second signal to the second device by the DCI. to improve the perception and communication performance of the second device.

[0163] Exemplarily, Table 1 defines the DMRS energy per resource element (EPRE) and the PDSCH (for example, the first signal) energy per resource element concept, and gives the ratio of the PDSCH EPRE to the DMRS EPRE when there is a power offset, which is related to the number of DMRS code division multiplexing groups without data, as shown in Table 1.

[0164] When the number of DMRS code division multiplexing groups without data is 1, and the DMRS configuration type is 1, the ratio of the PDSCH EPRE to the DMRS EPRE is 0dB-α / M.

[0165] When the number of DMRS code division multiplexing groups without data is 1, and the DMRS configuration type is 2, the ratio of the PDSCH EPRE to the DMRS EPRE is 0dB-α / M.

[0166] When the number of DMRS code division multiplexing groups without data is 2, and the DMRS configuration type is 1, the ratio of the PDSCH EPRE to the DMRS EPRE is -3dB-α / M.

[0167] When the number of DMRS code division multiplexing groups without data is 2, and the DMRS configuration type is 2, the ratio of the PDSCH EPRE to the DMRS EPRE is -3dB-α / M.

[0168] When the number of DMRS code division multiplexing groups without data is 3, and the DMRS configuration type is 2, the ratio of PDSCH EPRE to DMRS EPRE is -4.77dB-α / M.

[0169] Table 1

[0170] Exemplarily, the table 1 can be built in the first device and / or the second device.

[0171] In a possible implementation, the amplitude adjustment on the part of the subcarriers of the first data signal in the frequency domain to obtain the second data signal specifically includes:

[0172] The amplitude adjustment is performed on the subcarriers with non-fixed intervals.

[0173] Exemplarily, as shown in FIG. 11, which is a schematic diagram of amplitude adjustment with non-fixed intervals, specifically, the amplitude adjustment is performed on the subcarriers indicated by arrows, and it can be seen that the intervals between the subcarriers with amplitude adjustment are not fixed. In FIG. 11, the horizontal axis represents the subcarrier index, and the vertical axis represents the amplitude of the subcarrier signal.

[0174] In a possible implementation, the amplitude adjustment on the subcarriers with non-fixed intervals of the first data signal specifically includes: amplitude adjustment is performed on m subcarriers with the lowest signal amplitude in M subcarriers of the first data signal, where m is less than M.

[0175] Exemplarily, it is assumed that the amplitude values corresponding to m+1 subcarriers with the lowest signal amplitude in M subcarriers of the first data signal are respectively represented as Wherein, the amplitude value of the m+1th subcarrier satisfies The constraint threshold is represented as; m>P, P is the number of perception targets; and then the amplitude adjustment can be performed on the m subcarriers;

[0176] In a possible implementation, the method further includes: after determining the m subcarriers, calculating the power offset of the reference signal.

[0177] In a possible implementation, the calculation of the power offset of the reference signal specifically includes:

[0178] The power change value α of the first data signal is obtained; and the power offset multiple of the reference signal is Wherein,

[0179] K represents the threshold value of the amplitude adjustment; The amplitude values corresponding to m subcarriers with the lowest signal amplitude in M subcarriers of the first data signal are represented as; sng(z) is a numerical operator,

[0180] When z = 0, sng(z) = 0;

[0181] When z > 0, sng(z) = 1;

[0182] When z < 0, sng(z) = -1.

[0183] In a possible implementation, the indexes of the m subcarriers and the power offset multiple of the reference signal are indicated by the DCI. For example, the first device indicates the indexes of the m subcarriers on which the amplitude adjustment is made in the second signal and the power offset multiple of the reference signal to the second device by the DCI. So as to improve the perception and communication performance of the second device.

[0184] Exemplarily, Table 1 defines the DMRS energy per resource element (EPRE) and PDSCH (e.g., the first signal) energy per resource element concept, and gives the ratio of PDSCH EPRE to DMRS EPRE when there is a power offset, which is related to the number of DMRS code division multiplexing groups without data, as shown in Table 1.

[0185] Optionally, the first signal can be a DFT-s-OFDM waveform.

[0186] Optionally, the reference signal can be a demodulation reference signal DMRS.

[0187] S802: output the second signal, the second signal including the second data signal and the reference signal;

[0188] The first data signal is a single carrier signal; the first data signal and the second data signal are used for communication and perception.

[0189] It can be understood that the second signal also includes a data signal part (e.g., the second data signal) and a reference signal part (e.g., the reference signal), wherein the data signal part (e.g., the second data signal) and the reference signal part (e.g., the reference signal) are located at different time domain positions (e.g., different symbols), and the time-frequency resource diagram can refer to the description of the first signal in FIG. 9, which is not repeated here.

[0190] Optionally, the method further includes: generating a third signal based on the second signal; the third signal is a signal emitted by the first device from an antenna port port; the third signal includes data sent to the second device; and the echo signal of the third signal is used for target detection.

[0191] For example, FIG. 12 shows a flow diagram of a first signal, a second signal and a third signal, wherein the first signal comprises a first data signal and a reference signal, the second signal comprises a second data signal and a reference signal, and the third signal is a signal generated by OFDM modulation of the second signal for transmission via an antenna port. As shown in FIG. 12, the first signal is mapped via Quadrature Amplitude Modulation (QAM) and Discrete Fourier Transform (DFT), and the first data signal in the first signal is adjusted in amplitude in the frequency domain to generate the second signal, and then the second signal is modulated via OFDM to generate the third signal for transmission via an antenna port (e.g., via port 1000). It can be understood that the first signal and the second signal are internal signals and cannot be transmitted via an antenna port without modulation, while the third signal is a modulated signal, i.e., a signal that can be transmitted via an antenna port.

[0192] For example, the second device can obtain the third signal transmitted by the first device and obtain the data (e.g., sensing data) carried by the third signal.

[0193] Meanwhile, the echo signal of the third signal can be used for sensing, such as template detection and channel estimation, and the specific implementation can refer to the corresponding content of FIG. 5, which will not be described here.

[0194] FIG. 13 shows a comparison of sensing performance of data signals (e.g., second data signals) under three different subcarrier amplitude adjustment schemes; the abscissa represents the sensing performance SNR (dB) of the data signal, and the ordinate represents the root mean square error RMSE (m).

[0195] As can be seen from FIG. 13, the sensing performance of the data signal without amplitude adjustment of the subcarriers is the worst, the sensing performance of the data signal with amplitude adjustment of all subcarriers is the best, and the sensing performance of the data signal with amplitude adjustment of part of the subcarriers is moderate; for example, when RMSE = 10 -1 the performance loss of the data signal with amplitude adjustment of part of the subcarriers is only within 0.5 dB compared with the performance with amplitude adjustment of all subcarriers.

[0196] FIG. 14 shows a comparison of communication performance of data signals (e.g., second data signals) under three different subcarrier amplitude adjustment schemes; the abscissa represents the communication performance SNR (dB) of the data signal, and the ordinate represents the block error rate BLER.

[0197] Figure 14 presents a comparison of communication performance, it can be seen that the communication performance of the data signal without amplitude adjustment of the subcarriers is the best, the communication performance of the data signal with amplitude adjustment of all subcarriers is the worst, and the communication performance of the data signal with amplitude adjustment of part of the subcarriers is moderate; for example, when BLER = 10 -1 the communication performance of the data signal with amplitude adjustment of all subcarriers is about 3dB worse than that without amplitude adjustment of the subcarriers, and the communication performance of the data signal with amplitude adjustment of part of the subcarriers is improved by nearly 2dB compared with that with amplitude adjustment of all subcarriers.

[0198] It should be understood that the size of the sequence number of the above processes does not mean the order of execution, and the execution order of the processes should be determined according to their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0199] It should also be understood that the present application will present various aspects, embodiments or features around a system that can include a plurality of devices, components, modules, etc. It should be understood and appreciated that each system can include additional devices, components, modules, etc., and / or can not include all of the devices, components, modules, etc. discussed in connection with the accompanying drawings. In addition, combinations of these approaches can also be used.

[0200] It should also be understood that in some embodiments described above, devices in existing network architecture are mainly exemplarily illustrated (for example, the first device), and it should be understood that the specific form of the device is not limited by the embodiments of the present application. For example, devices with the same function in the future are also applicable to the embodiments of the present application.

[0201] The above, in combination with Figures 1 to 14, details the communication method provided by the embodiments of the present application. The above communication method is mainly introduced from the perspective of self-generation and self-reception of the first device. It can be understood that the first device contains the corresponding hardware structure and / or software module for executing each function in order to realize the above functions.

[0202] Those skilled in the art should realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is realized in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0203] The communication apparatus provided by the embodiments of the present application will be described in detail below in combination with FIG. 15 to FIG. 18. The description of the apparatus embodiments corresponds to the description of the method embodiments, and thus, the content not described in detail can be referred to the method embodiments above, and part of the content will not be described again for the sake of brevity.

[0204] The embodiments of the present application can divide the functional modules of the communication apparatus according to the method examples described above. For example, each functional module can be divided according to each function, or two or more functions can be integrated in one processing module. The integrated module can be realized in the form of hardware, or in the form of software functional module, or in the combination of software and hardware. The division of the modules in the embodiments of the present application is illustrative, and is only a logical function division, and another division manner can be used in actual implementation. The following will be described taking the example of dividing each functional module according to each function.

[0205] FIG. 15 is an exemplary block diagram of the communication apparatus provided by the embodiments of the present application. As shown in FIG. 15, the communication apparatus 1000 can include a chip system 1100, a memory 1200, a bus 1300, a power management module 1400, or a transceiver 1500, etc.

[0206] The chip system 1100 can be an integrated circuit chip, and has the processing capability of signals. In the implementation process, each step of the above method can be completed by the integrated logic circuit of hardware or the instruction in the form of software in the chip system 1100.

[0207] By way of example, and without limitation, the chip system 1100 can include a circuit or chip responsible for signal processing (such as a modem chip, also known as a baseband chip, or a system on chip SoC chip or SIP chip containing a modem core).

[0208] Optionally, the chip system 1100 can also be provided with a memory (such as a cache) for storing instructions and data. In some embodiments, the memory in the chip system 1100 is a cache memory. The memory can save instructions or data that have just been used or recycled by the chip system 1100. If the chip system 1100 needs to use the instructions or data again, it can be directly called from the memory. This avoids repeated access and reduces the waiting time of the chip system 1100, thereby improving the efficiency of the system.

[0209] In some embodiments, the chip system 1100 can include one or more interfaces. The interfaces can include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity moudle (SIM) interface, and / or a universal serial bus (USB) interface, etc.

[0210] The memory 1200 can include random access memory (RAM) and read-only memory (ROM). The memory 1200 can store computer-readable computer-executable code including instructions that, when executed, cause the processor to perform various functions described herein.

[0211] Optionally, the code can include instructions for implementing aspects of the present application, including instructions for supporting the generation of a perception signal or resolving a perception signal. The code can be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code can not be directly executable by the chip system 1100 but can cause a computer (for example, when compiled and executed) to perform functions described herein. In some cases, the memory 1200 can include, among other things, a basic input / output (I / O) system, which can control basic hardware or software operations, such as interaction with peripheral components or devices.

[0212] Illustratively, the chip system 1100 performs various functional applications and data processing of the communication device 1000 by running instructions stored in the memory 1200. For example, when the communication device 1000 performs file transfer with other devices (e.g., terminal devices, or network devices, or core network devices), the chip system 1100 of the communication device 1000 can invoke computer-executable program code stored in the memory 1200 to implement the data and / or signaling transmission method provided by the embodiments of the present application.

[0213] Optionally, the memory 1200 can be integrated in the above-mentioned chip system 1100, or independent of the chip system 1100.

[0214] The bus 1300 can be a USB, used to support the mutual communication between various parts in the communication device 1000.

[0215] The power management module 1400 is used to receive charging input from a charger. Optionally, the power management module 1400 can supply power to the communication device 1000 (e.g., the battery module of the communication device 1000) while charging the communication device 1000. As an example but not limitation, the power management module 1400 can also supply power to devices other than the communication device 1000.

[0216] The transceiver 1500 can communicate bi-directionally with one or more antennas, wired or wireless links, for example, the transceiver 1500 can represent a wireless transceiver and can communicate bi-directionally with another wireless transceiver. The transceiver 1500 can also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas. Where the transceiver 1500 can include a receiver and a transmitter, the receiver can implement the functionality to receive information, and the transmitter can implement the functionality to transmit information.

[0217] In some cases, a wireless device can include a single antenna. However, in some cases the device can have more than one antenna, like the antenna 1 and the antenna 2 shown in FIG. 15, which can be capable of concurrently transmitting or receiving multiple wireless transmissions. Illustratively, the antenna 1 and the antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in the communication device 1000 can be used to cover a single or multiple communication frequency bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 can be multiplexed as a diversity antenna for a wireless local area network. In some other embodiments, the antennas can be used in combination with a tuning switch. The communication device 1000 can transmit files to other devices through a wireless communication function.

[0218] In one design, the communication device 1000 can correspond to the first device in the above-mentioned method embodiments.

[0219] The communication device 1000 can implement steps or processes corresponding to the steps performed by the first device in the above-mentioned method embodiments, wherein the transceiver 1500 can be used to perform the transceiver-related operations of the first device in the above-mentioned method embodiments, for example, outputting a second signal, the second signal including a second data signal and a reference signal.

[0220] The chip system 1100 can be configured to perform processing-related operations of the first device in the above method embodiments, for example, performing amplitude adjustment on a part of subcarriers of the first data signal in the frequency domain to obtain a second data signal; wherein the first signal comprises the first data signal and a reference signal; the reference signal and the first data signal are located at different time domain positions.

[0221] The first data signal is a single carrier signal; the first data signal and the second data signal are used for communication and sensing.

[0222] In this design, the communication device 1000 can include modules such as a short-range communication module 1640, a sensor 1610, a display 1620, or a camera 1630 as shown in FIG. 15.

[0223] The short-range communication module 1640 can include a wireless network (WI-FI, or WIFI), or a module supporting short-range communication such as Bluetooth.

[0224] The sensor 1610 can include a pressure sensor, a gyroscope sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity light sensor, a fingerprint sensor, a temperature sensor, a touch sensor, an ambient light sensor, a bone conduction sensor, etc.

[0225] The display 1620 is configured to display images, videos, etc. The display includes a display panel. The display panel can adopt a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED), a flex light-emitting diode (FLED), a Miniled, a MicroLed, a Micro-oLed, a quantum dot light emitting diode (QLED), etc. For example, in the embodiments of the present application, the display can be used to display the interface required to be displayed by the communication device 1000. Exemplarily, the communication device 1000 realizes the display function through a graphic processing unit (GPU), a display, and an application processor, etc. The GPU is a microprocessor for image processing, connected to the display and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The chip system 1100 can include one or more GPUs, which execute program instructions to generate or change display information.

[0226] The camera 1630 is configured to acquire images, videos, and the like.

[0227] It can be understood that the structure shown in FIG. 15 does not constitute a specific limitation on the communication apparatus 1000, and the specific structure of the terminal device and / or the network device can refer to that shown in FIG. 15. In some embodiments, the communication apparatus 1000 can also include more or fewer components than those shown in FIG. 15, or combine some components, or split some components, or different arrangement of components, and the like. Alternatively, some components shown in FIG. 15 can be implemented in hardware, software, or a combination of software and hardware, and the terminal device and / or the network device can be added or reduced components based on the structure given in FIG. 15.

[0228] FIG. 16 is a schematic block diagram of a communication apparatus according to an embodiment of the present application. As shown in FIG. 16, the communication apparatus 2000 can include a baseband unit 2100, which can communicate with external devices through a cellular RF transceiver 2200 (for example, when the communication apparatus 2000 is a terminal device, the baseband unit 2100 can communicate with a network device through the cellular RF transceiver 2200; for another example, when the communication apparatus 2000 is a network device, the baseband unit 2100 can communicate with a terminal device and / or a core network device through the cellular RF transceiver 2200).

[0229] The baseband unit 2100 can include a computer readable medium / memory. The baseband unit 2100 is responsible for general processing, including the execution of software stored on the computer readable medium / memory. The software, when executed by the baseband unit 2100, causes the baseband unit 2100 to perform the various functions described supra. The computer readable medium / memory can also be used for storing data that is manipulated by the baseband unit 2100 when executing software.

[0230] The baseband unit 2100 further includes a reception unit 2010, a management unit 2020 and a transmission unit 2030. The management unit 2020 includes one or more sub-units shown in FIG. 16 (for example, a signal generation sub-unit and a signal analysis sub-unit, wherein the signal generation sub-unit can be used for the generation of the sensing signal in the above-mentioned method embodiments, and the signal analysis sub-unit can be used for the analysis of the sensing signal in the above-mentioned method embodiments). The units within the management unit 2020 can be stored in the computer readable medium / memory and / or configured as hardware within the baseband unit 2100. Among them, the reception unit 2010 and the transmission unit 2030 can be referred to as a transceiver unit.

[0231] When the communication apparatus 2000 is used to implement the functions of the first device in the above-mentioned method embodiments, the transmission unit 2030 is configured to perform the transmission steps of the first device, the reception unit 2010 is configured to perform the reception steps of the first device, and the management unit 2020 is configured to perform the processing steps of the first device.

[0232] For example, when the communication apparatus 2000 is configured to perform the method in FIG. 16, the first sending unit 2030 can be configured to perform the step of sending information in the method, for example, outputting a second signal, the second signal comprising a second data signal and a reference signal;

[0233] The management unit 2020 can be configured to perform the processing step in the method, for example, performing amplitude adjustment on part of the subcarriers of the first data signal in the frequency domain to obtain the second data signal; wherein the first signal comprises the first data signal and the reference signal; the reference signal is located at a different time domain position from the first data signal;

[0234] Wherein, the first data signal is a single carrier signal; the first data signal and the second data signal are used for communication and sensing.

[0235] For more details about the receiving unit 2010, the management unit 2020 and the sending unit 2030, please refer to the related description in the above method embodiments, which will not be repeated here.

[0236] FIG. 17 is a schematic block diagram of a chip system 3000 provided by an embodiment of the present application. The chip system may, for example, comprise a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip comprising a modem core.

[0237] As shown in FIG. 17, the chip system (or also referred to as a processing system) comprises a processor 3100, a memory 3200 and an input / output interface 3300.

[0238] The processor 3100 can be a processing circuit in the chip system (comprising at least one processor, such as the processor 1 and the processor 2 shown in FIG. 17, etc.). The processor 3100 can be coupled to the memory 3200 to invoke instructions in the memory 3200, so that the chip system can implement the methods and functions of the embodiments of the present application. The input / output interface 3300 can be an input / output circuit in the chip system, which outputs the processed information of the chip system or inputs the data or signaling information to be processed into the chip system for processing.

[0239] As a solution, the chip system is configured to implement the operations performed by the first device in the above various method embodiments.

[0240] For example, the processor 3100 is configured to implement the processing-related operations performed by the first device in the above method embodiments, which can be referred to the description in the foregoing embodiments;

[0241] The input / output interface 3300 is configured to implement the operations of sending and / or receiving performed by the first device in the above method embodiments, and details are described above.

[0242] FIG. 18 is a schematic block diagram of another chip system 4000 according to an embodiment of the present application. As shown in FIG. 18, the chip system (or also referred to as a processing system) includes an input / output interface 4100 and a logic circuit 4200. The input / output interface 4100 can be an input / output circuit in the chip system, and is configured to output information processed by the chip system, or input data or signaling information to be processed by the chip system, and details are described above. The logic circuit 4200 is configured to implement the communication method described above, and details are described above.

[0243] As an option, the chip system is configured to implement the operations performed by the first device in the above various method embodiments.

[0244] For example, the logic circuit 4200 is configured to implement the processing operations performed by the first device in the above method embodiments; and the input / output interface 4100 is configured to implement the sending and / or receiving operations performed by the first device in the above method embodiments.

[0245] The embodiments of the present application further provide a computer readable storage medium, having stored thereon computer instructions for implementing the method performed by the first device in the above various method embodiments.

[0246] For example, the computer program is executed by a computer, so that the method performed by the first device in the above various method embodiments is implemented.

[0247] The embodiments of the present application further provide a computer program product, containing instructions, which are executed by a computer, so that the method performed by the first device in the above various method embodiments is implemented.

[0248] The embodiments of the present application further provide a communication system, including at least one of the first device and / or at least one of the second device.

[0249] The above provides an explanation of the related content and beneficial effects of any one of the above devices, which can refer to the corresponding method embodiments provided above, and details are not described herein.

[0250] Those skilled in the art can clearly understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed 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 the present application.

[0251] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0252] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0253] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0254] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically independently, or two or more units can be integrated into one unit.

[0255] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or the parts that essentially contribute to the prior art or the parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes various media that can store program codes, such as a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk or an optical disk.

Claims

1. A communication method characterized by comprising: The method is used for a first device, comprising: adjusting amplitudes of part of subcarriers of a first data signal in a frequency domain to obtain a second data signal; wherein the first data signal is a single carrier signal, and the first data signal and the second data signal are sensing signals.

2. The method of claim 1, wherein, The adjusting amplitudes of part of subcarriers of a first data signal in a frequency domain to obtain a second data signal specifically comprises: adjusting amplitudes of subcarriers of a fixed interval of the first data signal.

3. The method of claim 2, wherein, The adjusting amplitudes of subcarriers of a fixed interval of the first data signal specifically comprises: determining a carrier start position and a fixed interval D in the subcarriers of the first data signal; wherein, The M represents a number of subcarriers of the first data signal, the P represents a number of sensing targets, and the fixed interval D is a positive integer greater than 0 and less than a preset threshold A.

4. The method of claim 3, wherein, The method further comprises: after determining the fixed interval D, calculating a power offset of a reference signal; the reference signal and the first data signal are located at different time domain positions.

5. The method of claim 4, wherein, The calculating a power offset of a reference signal specifically comprises: obtaining a power change value a of the first data signal; the power offset multiple of the reference signal is wherein, a = sng(x1 - K)(|x1 - K|) 2 + sng(x2 - K)(|x2 - K|) 2 +... + sng(x M / D - K)(|x M / D - K|) 2 , x1, x2,... x M / D is the amplitude value corresponding to the respective subcarrier of the first data signal; K represents the threshold value of amplitude adjustment; sng(z) is a numerical operator, when z=0, sng(z)=0; when z>0, sng(z)=1; when z<0, sng(z)=-1.

6. The method of claim 1, wherein, The adjusting amplitudes of part of subcarriers of a first data signal in a frequency domain to obtain a second data signal specifically comprises: adjusting amplitudes of subcarriers of a non-fixed interval of the first data signal.

7. The method of claim 6, wherein, The adjusting amplitudes of subcarriers of a non-fixed interval of the first data signal specifically comprises: adjusting amplitudes of m subcarriers with the lowest signal amplitudes among M subcarriers in the first data signal, wherein m is less than M.

8. The method of claim 7, wherein, The method further comprises: after determining the m subcarriers, calculating a power offset of a reference signal; the reference signal and the first data signal are located at different time domain positions.

9. The method of claim 8, wherein, The calculating a power offset of a reference signal specifically comprises: obtaining a power change value a of the first data signal; the power offset multiple of the reference signal is wherein, K represents a threshold value of amplitude adjustment; sng(z) is a numerical operator, when z=0, sng(z)=0; when z>0, sng(z)=1; when z<0, sng(z)=-1.

10. The method of any one of claims 3-5, wherein, The carrier starting position, the fixed interval D, and a power offset multiple of a reference signal are indicated by DCI.

11. The method of any of claims 7-9, wherein, an index of the m subcarriers and a power offset multiple of the reference signal indicated by the DCI.

12. The method of any one of claims 4-5, 10 or claims 8-9, 11, wherein, The reference signal comprises a demodulation reference signal DMRS.

13. A communications device, characterized by comprises: a processor for executing a computer program or instructions stored in a memory; the memory for storing the computer program or the instructions; when the computer program or the instructions and the processor are executed, the method as claimed in any one of claims 1-12 is executed.

14. A computer-readable storage medium, characterized in that, The computer readable storage medium stores instructions, and the instructions are executed on a computer, so that the method as claimed in any one of claims 1-12 is executed.

15. A computer program product, characterised in that, The computer program product comprises computer programs or instructions for executing the method as claimed in any one of claims 1-12. The computer program product comprises computer programs or instructions for executing the method as claimed in any one of claims 1-12.

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