Distributed wireless communication system, wireless communication method, device, and storage medium

Abstract

Embodiments of the present application provide a distributed wireless communication system, a wireless communication method, a device, and a storage medium, which relate to the field of communication technologies. The wireless communication system includes a central station, distributed nodes, and target nodes. The target nodes extract signals from the transmitted signals to obtain communication signals and / or energy signals; collect the energy in the energy signals to achieve wireless power supply, obtain communication data according to the communication signals, and generate communication feedback signals; the central station or the distributed nodes receive the communication feedback signals and / or sense reflected signals. Since the transmitted signals include energy signals, communication signals, and sensing signals, the wireless communication system can simultaneously complete the communication process with the target nodes, and use the sensing signals to perform sensing detection on the target nodes, thereby expanding the application scenarios of the wireless communication system. At the same time, the energy signals are used to supply power to the wireless communication devices, avoiding the need to frequently replace the batteries, reducing the maintenance cost, and reducing the environmental pollution caused by the discarded batteries.

Description

Technical Field

[0001] The present application relates to the field of communication technologies, and in particular, to a distributed wireless communication system, a wireless communication method, a device, and a storage medium. Background Art

[0002] With the decreasing costs of smartphones, wearable devices, wireless communication, and smart devices, the number of wireless communication devices is increasing. Wireless communication systems have extensive applications in fields such as smart terminals, smart homes, smart healthcare, new human-computer interactions, and autonomous driving.

[0003] In related technologies, the functions of wireless communication systems are single, and the communication process, sensing process, and energy transfer process are usually completed independently. Different wireless communication systems need to be set according to communication requirements. Therefore, a centralized wireless communication system that realizes communication, sensing, and energy transfer is a new research direction. However, since the power required for energy transfer and the receiving sensitivity are much higher than those of communication signals and sensing signals, the centralized communication, sensing, and energy transfer system has problems such as a small coverage range of energy transfer and low sensing accuracy. Summary of the Invention

[0004] The main objective of the embodiments of the present application is to propose a distributed wireless communication system, a wireless communication method, a device, and a storage medium, which can expand the coverage range of energy transfer and improve the sensing accuracy.

[0005] To achieve the above objective, a first aspect of the embodiments of the present application proposes a wireless communication system, including:

[0006] A central station, configured to send a first transmission signal according to a preset working mode;

[0007] At least one distributed node, where the distributed node is configured to send a second transmission signal according to the preset working mode;

[0008] When the preset working mode is a first working mode, the first transmission signal includes: a communication signal and a sensing signal, and the second transmission signal is an energy signal;

[0009] When the preset working mode is a second working mode, the first transmission signal is a communication and sensing fusion signal, and the communication and sensing fusion signal is generated by a communication signal and a sensing signal according to a first fusion strategy, and the second transmission signal is an energy signal;

[0010] When the preset working mode is a third working mode, the first transmission signal is an energy signal, and the second transmission signal is a communication and sensing fusion signal;

[0011] When the preset working mode is the fourth working mode, the first transmission signal is a sensing signal, the second transmission signal is an energy - communication fusion signal, and the energy - communication fusion signal is generated from a communication signal and an energy signal according to a first fusion strategy;

[0012] At least one target node, which is used to receive the transmission signal. The transmission signal includes: the first transmission signal and / or the second transmission signal, and signal extraction is performed on the transmission signal according to the preset working mode to obtain the communication signal and / or the energy signal;

[0013] The target node is further configured to collect the energy in the energy signal to achieve wireless power supply; or, obtain communication data according to the communication signal and generate a communication feedback signal;

[0014] The central station and the distributed nodes are further configured to receive the communication feedback signal and / or the sensing reflection signal, and the sensing reflection signal is generated by the target node reflecting the transmission signal;

[0015] Wherein, when the preset working mode is the first working mode, the second working mode, or the fourth working mode, the distance between the central station and the target node is greater than the distance between the distributed node and the target node; when the preset working mode is the third working mode, the distance between the central station and the target node is less than the distance between any distributed node and the target node.

[0016] In one embodiment, the central station includes:

[0017] A central - station waveform generation module, which is configured to generate a first transmission baseband signal of the first transmission signal according to the preset working mode;

[0018] A central - station transmitting RF processing module, which is used to perform RF processing on the first transmission baseband signal to obtain the first transmission signal;

[0019] A central - station antenna array module, which is used to send the first transmission signal to the target node;

[0020] A central - station receiving module, which is used to receive the sensing reflection signal and perform detection and analysis according to the sensing reflection signal to obtain first sensing data; and / or, receive the communication feedback signal and obtain first communication feedback data according to the communication feedback signal.

[0021] In one embodiment, the central - station receiving module includes: a central - station sensing receiving module and / or a central - station communication receiving module;

[0022] The central station sensing receiving module is used to receive the sensing reflection signal, and perform detection and analysis according to the sensing reflection signal to obtain first sensing data;

[0023] The central station communication receiving module is used to receive the communication feedback signal, and obtain first communication feedback data according to the communication feedback signal.

[0024] In one embodiment, the distributed node includes:

[0025] A distributed node waveform generation module, configured to generate a second transmission baseband signal of the second transmission signal according to a preset working mode;

[0026] A distributed node transmitting radio frequency processing module, configured to perform radio frequency processing on the second transmission baseband signal to obtain the second transmission signal;

[0027] A distributed node antenna array module, configured to transmit the second transmission signal to the target node.

[0028] In one embodiment, the distributed node further includes: a distributed node receiving module;

[0029] The distributed node receiving module includes: a distributed node sensing receiving module and / or a distributed node communication receiving module;

[0030] The distributed node sensing receiving module is used to receive the sensing reflection signal, and perform detection and analysis according to the sensing reflection signal to obtain second sensing data;

[0031] The distributed node communication receiving module is used to receive the communication feedback signal, and obtain second communication feedback data according to the communication feedback signal.

[0032] In one embodiment, when the preset working mode is the first working mode:

[0033] The central station waveform generation module includes:

[0034] A central station communication signal generation module, configured to generate a communication baseband signal;

[0035] A central station sensing signal generation module, configured to generate a sensing baseband signal;

[0036] The central station transmitting radio frequency processing module includes:

[0037] A central station communication signal radio frequency front end, configured to perform radio frequency processing on the communication baseband signal to obtain the communication signal;

[0038] A central station sensing signal radio frequency front end, configured to perform radio frequency processing on the sensing baseband signal to obtain the sensing signal;

[0039] The distributed node waveform generation module includes:

[0040] A distributed node energy signal generation module for generating an energy baseband signal;

[0041] The distributed node transmission radio frequency processing module includes:

[0042] A distributed node energy signal radio frequency front end for performing radio frequency processing on the energy baseband signal to obtain the energy signal.

[0043] In one embodiment, when the preset working mode is the second working mode:

[0044] The central station waveform generation module includes:

[0045] A central station communication and sensing fusion signal generation module for generating a communication and sensing fusion baseband signal according to the communication signal and the sensing signal;

[0046] The central station transmission radio frequency processing module includes:

[0047] A central station communication and sensing fusion signal radio frequency front end for performing radio frequency processing on the communication and sensing fusion baseband signal to obtain the communication and sensing fusion signal;

[0048] The distributed node waveform generation module includes:

[0049] A distributed node energy signal generation module for generating an energy baseband signal;

[0050] The distributed node transmission radio frequency processing module includes:

[0051] A distributed node energy signal radio frequency front end for performing radio frequency processing on the energy baseband signal to obtain the energy signal.

[0052] In one embodiment, when the preset working mode is the third working mode:

[0053] The central station waveform generation module includes:

[0054] A central station energy signal generation module for generating an energy baseband signal;

[0055] The central station transmission radio frequency processing module includes:

[0056] A central station energy signal radio frequency front end for performing radio frequency processing on the energy baseband signal to obtain the energy signal;

[0057] The distributed node waveform generation module includes:

[0058] The distributed node communication-sensing fusion signal generation module is used to generate the communication-sensing fusion baseband signal according to the communication signal and the sensing signal;

[0059] The distributed node transmitting radio frequency processing module includes:

[0060] The distributed node communication-sensing fusion signal radio frequency front end is used to perform radio frequency processing on the communication-sensing fusion baseband signal to obtain the communication-sensing fusion signal.

[0061] In an embodiment, when the preset working mode is the fourth working mode:

[0062] The central station waveform generation module includes:

[0063] The central station sensing signal generation module is used to generate the sensing baseband signal;

[0064] The central station transmitting radio frequency processing module includes:

[0065] The central station sensing signal radio frequency front end is used to perform radio frequency processing on the sensing baseband signal to obtain the sensing signal;

[0066] The distributed node waveform generation module includes:

[0067] The distributed node communication-energy fusion signal generation module is used to generate the communication-energy fusion baseband signal according to the communication signal and the energy signal;

[0068] The distributed node transmitting radio frequency processing module includes:

[0069] The distributed node communication-energy fusion signal radio frequency front end is used to perform radio frequency processing on the communication-energy fusion baseband signal to obtain the communication-energy fusion signal.

[0070] In an embodiment, the central station sensing receiving module includes:

[0071] The central station echo receiving radio frequency front end is used to perform radio frequency front end processing on the received sensing reflection signal;

[0072] The central station matched filtering module is used to perform pulse compression and matched filtering on the sensing reflection signal that has undergone radio frequency front end processing to obtain the first filtered signal;

[0073] The central station clutter filtering module is used to filter out the clutter signal in the first filtered signal to obtain the detection signal;

[0074] The central station target detection module is used to detect and analyze the detection signal to obtain the first sensing data.

[0075] In an embodiment, the central station communication receiving module includes:

[0076] The central station communication receiving RF front-end is used to receive the communication feedback signal;

[0077] The central station communication signal demodulation module is used to obtain the first communication feedback data according to the communication feedback signal.

[0078] In one embodiment, the distributed node sensing receiving module includes:

[0079] The distributed node echo receiving RF front-end is used to perform RF front-end processing on the received sensing reflection signal;

[0080] The distributed node matched filtering module is used to perform pulse compression and matched filtering on the sensing reflection signal that has undergone RF front-end processing to obtain a second filtered signal;

[0081] The distributed node clutter filtering module is used to filter out the clutter signal in the second filtered signal to obtain a detection signal;

[0082] The distributed node target detection module is used to detect and analyze the detection signal to obtain the second sensing data.

[0083] In one embodiment, the distributed node communication receiving module includes:

[0084] The distributed node communication receiving RF front-end is used to receive the communication feedback signal;

[0085] The distributed node communication signal demodulation module is used to obtain the second communication feedback data according to the communication feedback signal.

[0086] In one embodiment, the target node includes:

[0087] The target node antenna receiving module is used to receive the transmission signal;

[0088] The target node RF signal extraction module is used to extract signals from the transmission signal to obtain the communication signal and / or the energy signal;

[0089] The target node energy module is used to collect the energy in the energy signal to achieve wireless power supply;

[0090] The target node communication transceiver module is used to obtain communication data according to the communication signal and generate a communication feedback signal.

[0091] In one embodiment, the steps of the first fusion strategy include:

[0092] Taking the sensing signal as the basic carrier signal;

[0093] Modulating according to the communication data on the basic carrier signal to obtain the communication-sensing fusion signal.

[0094] In one embodiment, the steps of the first fusion strategy include:

[0095] Generate a beamforming matrix;

[0096] Modulate the sensing signal on the main lobe of the carrier signal according to the beamforming matrix, and modulate the communication signal on the side lobe of the carrier signal to obtain the communication-sensing fusion signal.

[0097] In one embodiment, the steps of the second fusion strategy include:

[0098] Generate a first fusion allocation parameter;

[0099] According to a preset multiplexing strategy and the first fusion allocation parameter, generate the communication-energy fusion signal by using the communication signal and the energy signal. The preset multiplexing strategy includes one of a time-division multiplexing strategy, a frequency-division multiplexing strategy, or a space-division multiplexing strategy.

[0100] To achieve the above object, a second aspect of the embodiments of the present application proposes a wireless communication method, and the method includes:

[0101] Send a transmission signal according to a preset working mode, so that at least one target node receives the transmission signal, and extract signals from the transmission signal according to the preset working mode to obtain a communication signal and / or an energy signal; and collect the energy in the energy signal to achieve wireless power supply; the transmission signal includes: the first transmission signal and / or the second transmission signal.

[0102] Receive the communication feedback signal generated by the target node according to the communication signal, and / or, the sensing reflection signal reflected by the target node from the transmission signal.

[0103] When the preset working mode is the first working mode, the first transmission signal includes: a communication signal and a sensing signal, and the second transmission signal is an energy signal;

[0104] When the preset working mode is the second working mode, the first transmission signal is a communication-sensing fusion signal, which is generated by a communication signal and a sensing signal according to the first fusion strategy, and the second transmission signal is an energy signal;

[0105] When the preset working mode is the third working mode, the first transmission signal is an energy signal, and the second transmission signal is a communication-sensing fusion signal;

[0106] When the preset working mode is the fourth working mode, the first transmission signal is a sensing signal, the second transmission signal is an energy and communication fusion signal, and the energy and communication fusion signal is generated from a communication signal and an energy signal according to a first fusion strategy.

[0107] In one embodiment, the steps of the first fusion strategy include:

[0108] Taking the sensing signal as a basic carrier signal;

[0109] Modulating according to the communication data on the basic carrier signal to obtain the communication and sensing fusion signal.

[0110] In one embodiment, the steps of the first fusion strategy include:

[0111] Generating a beamforming matrix;

[0112] According to the beamforming matrix, modulating and mapping the sensing signal to the main lobe of the antenna beam, and modulating and mapping the communication signal to the side lobe of the antenna beam to obtain the communication and sensing fusion signal;

[0113] In one embodiment, the steps of the second fusion strategy include:

[0114] Generating a second fusion allocation parameter;

[0115] According to a preset multiplexing strategy and the second fusion allocation parameter, using the communication signal and the energy signal to generate the energy and communication fusion signal, and the preset multiplexing strategy includes one of a time-division multiplexing strategy, a frequency-division multiplexing strategy, or a space-division multiplexing strategy.

[0116] To achieve the above object, a third aspect of the embodiments of the present application proposes an electronic device, which includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the method described in the second aspect above is implemented.

[0117] To achieve the above object, a fourth aspect of the embodiments of the present application proposes a storage medium, which is a computer-readable storage medium. The storage medium stores a computer program, and when the computer program is executed by a processor, the method described in the second aspect above is implemented.

[0118] The distributed wireless communication system, wireless communication method, device, and storage medium proposed in the embodiments of the present application. The wireless communication system includes: a central station and at least one distributed node that send transmission signals according to a preset working mode, a target node that receives the transmission signals, and the target node extracts signals from the transmission signals according to the type of the transmission signals to obtain communication signals and / or energy signals; collects the energy in the energy signals to achieve wireless power supply, obtains communication data according to the communication signals, and generates a communication feedback signal; the central station or the distributed node receives the communication feedback signal and / or a sensing reflection signal generated by the target node reflecting the transmission signal. In the embodiments of the present application, since the transmission signals include energy signals, communication signals, and sensing signals, the wireless communication system can simultaneously complete the communication process with the target node and use the sensing signals to perform sensing detection on the target node, expanding the application scenarios of the wireless communication system. Since the reception sensitivity required for the energy signals is much higher than that of the communication signals and the sensing signals, an appropriate working mode can be selected according to the position of the target node, and different working modes are used to ensure the maximization of the energy transfer efficiency and improve the sensing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0119] Figure 1 is a schematic diagram of a distributed wireless communication system provided by an embodiment of the present application.

[0120] Figure 2 is a schematic diagram of the central station of a distributed wireless communication system provided by another embodiment of the present application.

[0121] Figure 3 is a schematic diagram of a distributed node of a distributed wireless communication system provided by another embodiment of the present application.

[0122] Figure 4 is a schematic diagram of a waveform generation module of the central station of a distributed wireless communication system provided by another embodiment of the present application.

[0123] Figure 5 is a schematic diagram of a waveform generation module of a distributed node of a distributed wireless communication system provided by another embodiment of the present application.

[0124] Figure 6 is a schematic diagram of the coverage range of a distributed wireless communication system provided by another embodiment of the present application.

[0125] Figure 7 is a schematic diagram of a waveform generation module of the central station of a distributed wireless communication system provided by another embodiment of the present application.

[0126] Figure 8 is a schematic diagram of the coverage range of a distributed wireless communication system provided by another embodiment of the present application.

[0127] Figure 9Schematic diagram of the central station waveform generation module of the distributed wireless communication system provided by another embodiment of the present application.

[0128] Figure 10 Schematic diagram of the distributed node waveform generation module of the distributed wireless communication system provided by another embodiment of the present application.

[0129] Figure 11 Schematic diagram of the operating range of the distributed wireless communication system provided by another embodiment of the present application.

[0130] Figure 12 Schematic diagram of the central station waveform generation module of the distributed wireless communication system provided by another embodiment of the present application.

[0131] Figure 13 Schematic diagram of the distributed node waveform generation module of the distributed node of the distributed wireless communication system provided by another embodiment of the present application.

[0132] Figure 14 Schematic diagram of the operating range of the distributed wireless communication system provided by another embodiment of the present application.

[0133] Figure 15 Schematic diagram of the target node of the distributed wireless communication system provided by another embodiment of the present application.

[0134] Figure 16 Schematic diagram of the central station of the distributed wireless communication system provided by another embodiment of the present application.

[0135] Figure 17 Schematic diagram of the distributed node of the distributed wireless communication system provided by another embodiment of the present application.

[0136] Figure 18 Schematic diagram of the central station of the distributed wireless communication system provided by another embodiment of the present application.

[0137] Figure 19 Schematic diagram of the distributed node of the distributed wireless communication system provided by another embodiment of the present application.

[0138] Figure 20 Schematic diagram of the working process of the distributed wireless communication system provided by another embodiment of the present application.

[0139] Figure 21 Schematic diagram of the working process of the distributed wireless communication system provided by another embodiment of the present application.

[0140] Figure 22 Schematic diagram of the working process of the distributed wireless communication system provided by another embodiment of the present application.

[0141] Figure 23 YesFigure 23 Flowchart of step S232 in

[0142] Figure 24 Yes Figure 23 Flowchart of step S232 in

[0143] Figure 25 Yes Figure 23 Flowchart of step S232 in

[0144] Figure 26 It is a flowchart of the wireless communication method provided by the embodiments of the present application. Detailed implementation manners

[0145] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0146] It should be noted that although the functional modules are divided in the device schematic diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order from the module division in the device or the order in the flowchart.

[0147] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0148] With the decreasing costs of smartphones, wearable devices, wireless communications, and smart devices, the number of wireless communication devices is increasing. Wireless communication systems have a wide range of applications in fields such as smart terminals, smart homes, smart health care, new human-computer interactions, and autonomous driving.

[0149] The applicant has found that in related technologies, the functions of wireless communication systems are single, and the communication process and the sensing process are usually completed independently. Different wireless communication systems need to be set according to communication requirements. In addition, in order to meet more communication requirements, a large number of wireless communication devices need to be deployed. These wireless communication devices are powered by batteries with limited capacity, resulting in a short standby time. The batteries need to be replaced and recycled regularly, resulting in high maintenance costs. Moreover, a large number of discarded small batteries will cause environmental pollution.

[0150] Based on this, the embodiments of the present application provide a distributed wireless communication system, a wireless communication method, a device, and a storage medium. The wireless communication system includes: a central station that sends a transmission signal according to a preset working mode, a target node that receives the transmission signal, and the target node extracts signals from the transmission signal according to the type of the transmission signal to obtain a communication signal and / or an energy signal; collects the energy in the energy signal to achieve wireless power supply, obtains communication data according to the communication signal, and generates a communication feedback signal; the central station receives the communication feedback signal and / or a sensing reflection signal generated by the target node reflecting the transmission signal. In the embodiments of the present application, since the transmission signal includes an energy signal, a communication signal, and a sensing signal, the wireless communication system can simultaneously complete the communication process with the target node, and use the sensing signal to perform sensing detection on the target node, expanding the application scenarios of the wireless communication system. At the same time, the energy signal is used to supply power to the wireless communication device, avoiding the need to frequently replace the battery, reducing the maintenance cost, and reducing the environmental pollution caused by discarded batteries.

[0151] The embodiments of the present application provide a distributed wireless communication system, a wireless communication method, a device, and a storage medium, which will be specifically described through the following embodiments.

[0152] First, the wireless communication system in the embodiments of the present application will be described below.

[0153] Figure 1 It is a schematic diagram of the distributed wireless communication system 100 in the embodiments of the present application. As shown in the figure, it includes:

[0154] A central station 200, where the central station 200 is used to send a first transmission signal according to a preset working mode, and the first transmission signal includes one or more of a communication signal, a sensing signal, and an energy signal. In one embodiment, the central station 200 is a communication base station.

[0155] At least one distributed node 300 (illustrated by 2 in the figure), where the distributed node 300 is used to send a second transmission signal according to a preset working mode, and the second transmission signal includes: one or more of a communication signal, a sensing signal, and an energy signal. In one embodiment, the distributed node 300 is an edge base station, and its coverage range is smaller than that of the central station 200.

[0156] As can be seen from the above, by using the first transmission signal and the second transmission signal, the communication function, the sensing function, and the power supply for the target node 400 can be realized in combination with the central station 200 and the distributed node 300.

[0157] At least one target node 400 (two are taken as examples in the figure), and the target node 400 is used to receive a transmission signal, where the transmission signal includes: a first transmission signal and / or a second transmission signal. The target node 400 extracts the transmission signal according to the type of the transmission signal to obtain a communication signal and an energy signal. And the target node 400 is further used to collect the energy in the energy signal to achieve wireless power supply; obtain communication data according to the communication signal and generate a communication feedback signal.

[0158] In an embodiment, when the preset working mode is the first working mode, the second working mode, or the fourth working mode, the distance between the central station and the target node is greater than the distance between the distributed node and the target node; when the preset working mode is the third working mode, the distance between the central station and the target node is less than the distance between any distributed node and the target node. Since the required receiving sensitivity of the energy signal is much higher than that of the communication signal and the sensing signal, a suitable working mode can be selected according to the position of the target node, and different working modes are used to ensure the maximization of the energy transfer efficiency and improve the sensing accuracy.

[0159] As can be seen from the above, the distributed wireless communication system 100 includes: a central station 200 that sends a first transmission signal according to a preset working mode, a distributed node 300 that sends a second transmission signal according to a preset working mode, and a target node 400 that receives the transmission signal. The target node 400 extracts the transmission signal according to the type of the received transmission signal to obtain a communication signal and / or an energy signal. Further, the target node 400 collects the energy in the energy signal to achieve wireless power supply, obtains communication data according to the communication signal, and generates a communication feedback signal. Then, the central station 200 or the distributed node 300 receives the communication feedback signal and / or a sensing reflection signal generated by the target node reflecting the transmission signal.

[0160] The central station and the distributed node will be described in detail below.

[0161] In an embodiment, referring to Figure 2 , it is a schematic diagram of the central station. In this embodiment, the central station 200 includes:

[0162] A central station waveform generation module 210, where the central station waveform generation module 210 is used to generate a first transmission baseband signal of the first transmission signal according to a preset working mode, and the first transmission baseband signal is the baseband signal of the first transmission signal.

[0163] A central station transmitting radio frequency processing module 220, connected to the central station waveform generation module 210, is used to perform radio frequency processing on the first transmission baseband signal, and modulate the first transmission baseband signal from the baseband onto a high-frequency carrier to obtain the first transmission signal.

[0164] The central station antenna array module 230 is used to send the first high-frequency transmission signal to the target node 400.

[0165] The central station receiving module 260 is used to receive the sensed reflection signal, perform detection and analysis based on the sensed reflection signal to obtain the first sensed data; and / or receive the communication feedback signal and obtain the first communication feedback data according to the communication feedback signal.

[0166] In one embodiment, when the central station receiving module 260 is used to receive the sensed reflection signal, it includes the central station sensing receiving module 240. Among them, the central station sensing receiving module 240 is used to receive the sensed reflection signal generated by the target node 400 reflecting the transmission signal, and perform detection and analysis based on the sensed reflection signal to obtain the first sensed data of the target node 400, realizing the sensing process.

[0167] In one embodiment, when the central station receiving module 260 is used to receive the communication feedback signal, it includes the central station communication receiving module 250. Among them, the central station communication receiving module 250 is used to receive the communication feedback signal of the target node 400 and obtain the communication feedback data according to the communication feedback signal, realizing the communication process with the target node 400.

[0168] In one embodiment, referring to Figure 3 , it is a schematic diagram of a distributed node. In this embodiment, the distributed node 300 includes:

[0169] The distributed node waveform generation module 310, where the distributed node waveform generation module 310 is used to generate the second transmission baseband signal of the second transmission signal according to the preset working mode, and the second transmission baseband signal is the baseband signal of the second transmission signal.

[0170] The distributed node transmitting radio frequency processing module 320 is connected to the distributed node waveform generation module 310, and is used to perform radio frequency processing on the second transmission baseband signal, modulate the second transmission baseband signal on the high-frequency carrier to obtain the second transmission signal.

[0171] The distributed node antenna array module 330 is used to send the high-frequency second transmission signal to the target node 400.

[0172] In one embodiment, if the distributed node 300 needs to receive the communication feedback signal or the sensed reflection signal, it further includes:

[0173] The distributed node receiving module 360 is used to receive the sensed reflection signal, perform detection and analysis based on the sensed reflection signal to obtain the second sensed data; and / or receive the communication feedback signal and obtain the second communication feedback data according to the communication feedback signal.

[0174] In one embodiment, when the distributed node receiving module 360 is used to receive the sensing reflection signal, it includes the distributed node sensing receiving module 340. Among them, the distributed node sensing receiving module 340 is used to receive the sensing reflection signal generated by the target node 400 reflecting the transmission signal, and perform detection and analysis according to the sensing reflection signal to obtain the second sensing data of the target node 400, so as to realize the sensing process.

[0175] In one embodiment, when the distributed node receiving module 360 is used to receive the communication feedback signal, it includes the distributed node communication receiving module 350. Among them, the distributed node communication receiving module 350 is used to receive the communication feedback signal of the target node 400, and obtain the communication feedback data according to the communication feedback signal, so as to realize the communication process with the target node 400.

[0176] In one embodiment, there are four preset working modes:

[0177] When the preset working mode is the first working mode, the first transmission signal includes: communication signal and sensing signal, and the second transmission signal is the energy signal.

[0178] When the preset working mode is the second working mode, the first transmission signal is the communication and sensing fusion signal, and the communication and sensing fusion signal is generated by the communication signal and the sensing signal according to the first fusion strategy. The second transmission signal is the energy signal.

[0179] When the preset working mode is the third working mode, the first transmission signal is the energy signal, and the second transmission signal is the communication and sensing fusion signal.

[0180] When the preset working mode is the fourth working mode, the first transmission signal is the sensing signal, and the second transmission signal is the communication and energy fusion signal, and the communication and energy fusion signal is generated by the communication signal and the energy signal according to the first fusion strategy.

[0181] It can be understood that the target node 400 needs to extract the communication signal from the transmission signal to complete the communication process with the central station 200 or the distributed node 300.

[0182] When the preset working mode is the first working mode, the target node 400 receives the first transmission signal sent by the central station 200, and can extract: communication signal and sensing signal through signal extraction. Receiving the second transmission signal sent by the distributed node 300 can obtain: energy signal.

[0183] When the preset working mode is the second working mode, the target node 400 receives the first transmission signal sent by the central station 200, that is, the communication and sensing fusion signal, and then extracts the communication signal and the sensing signal from the communication and sensing fusion signal through signal extraction. Receiving the second transmission signal sent by the distributed node 300 can obtain: energy signal.

[0184] When the preset working mode is the third working mode, the target node 400 can obtain an energy signal by receiving the first transmission signal sent by the central station 200, receive the second transmission signal sent by the distributed node 300, that is, the communication-sensing fusion signal, and then perform signal extraction on the communication-sensing fusion signal to obtain: a communication signal and a sensing signal.

[0185] When the preset working mode is the fourth working mode, the target node 400 can obtain a sensing signal by receiving the first transmission signal sent by the central station 200, receive the second transmission signal sent by the distributed node 300, that is, the communication-energy fusion signal, and then perform signal extraction on the communication-energy fusion signal to obtain: a communication signal and an energy signal.

[0186] It can be understood that since the sensing signal is included in the transmission signals sent by the central station 200 and the target node 300 in the four preset working modes, the target node 400 can obtain a sensing reflection signal for detecting sensing by reflecting the transmission signal.

[0187] In an embodiment, when the preset working mode is the first working mode, the central station receives a communication feedback signal and a sensing reflection signal; when the preset working mode is the second working mode, the central station receives a communication feedback signal and a sensing reflection signal; when the preset working mode is the third working mode, the distributed node receives a communication feedback signal and a sensing reflection signal; when the preset working mode is the fourth working mode, the central station receives a sensing reflection signal and the distributed node receives a communication feedback signal.

[0188] In an embodiment, when the preset working mode is the first working mode, referring to Figure 4 , the central station waveform generation module 210 of the central station 200 includes:

[0189] A central station communication signal generation module 2111 for generating a communication baseband signal.

[0190] A central station sensing signal generation module 2112 for generating a sensing baseband signal.

[0191] It can be understood that the waveform generation processes of the central station communication signal generation module 2111 and the central station sensing signal generation module 2112 are independent of each other and uncoupled. And the generated communication baseband signal and sensing baseband signal can be digital or analog. If it is an analog signal, both the central station communication signal generation module 2111 and the central station sensing signal generation module 2112 include a digital-to-analog conversion module.

[0192] The central station transmitting radio frequency processing module 220 includes:

[0193] The central station communication signal RF front-end 2211 is used to perform RF processing on the communication baseband signal to obtain a communication signal.

[0194] The central station sensing signal RF front-end 2212 is used to perform RF processing on the sensing baseband signal to obtain a sensing signal.

[0195] It can be understood that the RF processing processes of the central station communication signal RF front-end 2211 and the central station sensing signal RF front-end 2212 are independent of each other.

[0196] Refer to Figure 5 , the distributed node waveform generation module 310 of the distributed node 300 includes:

[0197] The distributed node energy signal generation module 3111 is used to generate an energy baseband signal.

[0198] The distributed node transmission RF processing module 320 includes:

[0199] The distributed node energy signal RF front-end 3212 is used to perform RF processing on the energy baseband signal to obtain an energy signal.

[0200] Refer to Figure 6 , which is a schematic diagram of the working distance of the wireless communication system in an embodiment.

[0201] When the preset working mode is the first working mode, the first transmission signal transmitted by the central station 200 includes a communication signal and a sensing signal, and the second transmission signal transmitted by the distributed node 300 is an energy signal. In this embodiment, the transmission distance of the energy signal is less than that of the sensing signal, and the transmission distance of the sensing signal is less than that of the communication signal.

[0202] Taking three distributed nodes 300 as an example, the action range of the distributed node 300 is: the energy transmission range F1 (the dotted line range in the figure represents), and the action range of the energy transmission range F1 is related to the transmission distance of the energy signal. It can be understood that the energy signals of different distributed nodes 300 are determined according to the RF parameters of the distributed node 300. The action range of the central station 200 includes: the central station communication range F2 and the central station sensing range F3.

[0203] The target node 400 located within the energy transfer range F1 can receive the energy information of the second transmission signal and collect the energy in the energy signal to achieve wireless power supply. The target node 400 located within the sensing range F3 of the central station can receive the first transmission signal, reflect the first transmission signal to form a sensing reflection signal, and can also extract the signal from the first transmission signal to obtain a communication signal, obtain communication data according to the communication signal, and generate a communication feedback signal. The target node 400 located in a partial area (F2 - F3 in the figure) of the communication range F2 of the central station can receive the first transmission signal, extract the signal from the first transmission signal to obtain a communication signal, obtain communication data according to the communication signal, and generate a communication feedback signal.

[0204] In one embodiment, when the preset working mode is the second working mode, referring to Figure 7 , the central station waveform generation module 210 of the central station 200 includes:

[0205] A central station communication and sensing fusion signal generation module 2121, where the communication and sensing fusion signal generation module 2121 is used to generate a communication and sensing fusion baseband signal according to the communication signal and the sensing signal.

[0206] The central station transmitting radio frequency processing module 220 includes:

[0207] A central station communication and sensing fusion signal radio frequency front end 2221, connected to the communication and sensing fusion signal generation module 2121, for performing radio frequency processing on the communication and sensing fusion baseband signal to obtain a communication and sensing fusion signal.

[0208] The structure of the distributed node waveform generation module 310 of the distributed node 300 is the same as Figure 5 the same.

[0209] Referring to Figure 8 , when the preset working mode is the second working mode, the first transmission signal transmitted by the central station 200 includes a communication and sensing fusion signal of the communication signal and the sensing signal, and the second transmission signal transmitted by the distributed node 300 is an energy signal. In this embodiment, the transmission distance of the energy signal is less than that of the sensing signal, and the transmission distance of the sensing signal is less than that of the communication signal.

[0210] Taking three distributed nodes 300 as an example, the action range of the distributed node 300 is: the energy transfer range F1 (the dotted line range in the figure), and the action range of the energy transfer range F1 is related to the transmission distance of the energy signal. It can be understood that the energy signals of different distributed nodes 300 are determined according to the radio frequency parameters of the distributed node 300. The action range of the central station 200 includes the central station communication and sensing integration range F4 shown in the figure, and the action range of the central station communication and sensing integration range F4 is determined by the transmission distance of the sensing signal.

[0211] The target node 400 located within the energy transfer range F1 can receive the energy information of the second transmission signal and collect the energy in the energy signal to achieve wireless power supply. The target node 400 located within the integrated communication and sensing range F4 of the central station can receive the first transmission signal and reflect the first transmission signal to form a sensing reflection signal. At the same time, the communication signal is extracted from the first transmission signal, and the communication data is obtained according to the communication signal and a communication feedback signal is generated.

[0212] In one embodiment, when the preset working mode is the third working mode, referring to Figure 9 , the central station waveform generation module 210 of the central station 200 includes:

[0213] The central station energy signal generation module 2131 is used to generate an energy baseband signal.

[0214] The central station transmitting radio frequency processing module 220 includes:

[0215] The central station energy signal radio frequency front end 2132 is used to perform radio frequency processing on the energy baseband signal to obtain an energy signal.

[0216] Referring to Figure 10 , the distributed node waveform generation module 310 of the distributed node 300 includes:

[0217] The distributed node communication and sensing fusion signal generation module 3131, wherein the distributed node communication and sensing fusion signal generation module 3131 is used to generate a communication and sensing fusion baseband signal according to the communication signal and the sensing signal.

[0218] The distributed node transmitting radio frequency processing module 320 includes:

[0219] The distributed node communication and sensing fusion signal radio frequency front end 3231 is connected to the distributed node communication and sensing fusion signal generation module 3131 and is used to perform radio frequency processing on the communication and sensing fusion baseband signal to obtain a communication and sensing fusion signal.

[0220] It can be understood that due to different communication parameters, the communication and sensing fusion signals obtained by the distributed node 300 and the central station 200 are not signals with consistent parameters. They only use the first fusion strategy to fuse the communication signal and the sensing signal to obtain the communication and sensing fusion signal, and different communication signals or sensing signals can generate different communication and sensing fusion signals.

[0221] Referring to Figure 11 , when the preset working mode is the third working mode, the first transmission signal transmitted by the central station 200 is an energy signal, and the second transmission signal transmitted by the distributed node 300 is a communication and sensing fusion signal of the communication signal and the sensing signal.

[0222] In one embodiment, the coverage range of the central station 200 is the energy transmission range F5 of the central station (the range represented by the dotted line in the figure). Since the distributed node 300 is an edge base station, the distributed node 300 can be set within the energy transmission range F5 of the central station 200, so that the central station 200 can also supply energy to the distributed node 300. The coverage range of the central station energy transmission range F5 is related to the transmission distance of the energy signal. The distributed node 300 can only complete the sensing process of the target node 400 according to the demand, or complete the communication process and the sensing process at the same time.

[0223] Taking three distributed nodes 300 as an example, the coverage range of the distributed node 300 includes: the distributed node sensing range F6 and the distributed node communication and sensing integration range F7. The coverage range of the distributed node 300 is determined by the transmission distance of the sensing signal.

[0224] The target node 400 located within the energy transmission range F5 of the central station can receive the energy information of the first transmission signal and collect the energy in the energy signal to achieve wireless power supply. The target node 400 located within the distributed node sensing range F6 can receive the second transmission signal and reflect the second transmission signal to form a sensing reflection signal. The target node 400 located within the distributed node communication and sensing integration range F7 can receive the second transmission signal, reflect the second transmission signal to form a sensing reflection signal, and at the same time extract the signal from the second transmission signal to obtain a communication signal, obtain communication data according to the communication signal and generate a communication feedback signal.

[0225] In one embodiment, when the preset working mode is the fourth working mode, referring to Figure 12 , the central station waveform generation module 210 of the central station 200 includes:

[0226] The central station sensing signal generation module 2112 is used to generate a sensing baseband signal.

[0227] The central station transmitting radio frequency processing module 220 includes:

[0228] The central station sensing signal radio frequency front end 2212 is used to perform radio frequency processing on the sensing baseband signal to obtain a sensing signal.

[0229] It can be understood that the central station sensing signal generation module 2112 and the central station sensing signal radio frequency front end 2212 are Figure 4 consistent.

[0230] Referring to Figure 13 , the distributed node waveform generation module 310 of the distributed node 300 includes:

[0231] The distributed node communication and energy fusion signal generation module 3141 is used to generate a communication and energy fusion baseband signal according to the communication signal and the energy signal.

[0232] The distributed node transmitting radio frequency processing module 320 includes:

[0233] A distributed node energy-harvesting and communication signal integrated radio frequency front-end 3241, configured to perform radio frequency processing on the energy-harvesting and communication signal integrated baseband signal to obtain an energy-harvesting and communication signal integrated signal.

[0234] Referring to Figure 14 , when the preset working mode is the fourth working mode, the first transmission signal transmitted by the central station 200 is a sensing signal, and the second transmission signal transmitted by the distributed node 300 is an energy-harvesting and communication signal integrated signal of a communication signal and an energy signal. In this embodiment, the transmission distance of the energy signal is less than that of the sensing signal.

[0235] In one embodiment, the range of action of the central station 200 is the second sensing range F8 of the central station. The range of action of the distributed node 300 is the energy-harvesting and communication co-transmission range F9. The range of action of the energy-harvesting and communication co-transmission range F9 is related to the transmission distance of the energy signal, and the range of action of the second sensing range F8 of the central station is related to the transmission distance of the sensing signal.

[0236] It can be understood that a target node 400 located within the energy-harvesting and communication co-transmission range F9 can receive the energy signal and the communication signal in the second transmission signal. The target node 400 can collect the energy in the energy signal to achieve wireless power supply, obtain communication data according to the communication signal, and generate a communication feedback signal. A target node 400 located within the sensing range F8 of the central station can reflect the first transmission signal to form a sensing reflection signal. Since the transmission distance of the energy signal is the shortest, using the distributed node for energy transfer can expand the range of action of the wireless communication system. Deploying a distributed station for transmitting the energy signal near the target node can enable the wireless communication system to communicate with more target nodes.

[0237] As can be seen from the above, by combining the energy signal, the communication signal, and the sensing signal in the first transmission signal and the second transmission signal, the wireless communication system can simultaneously complete the communication process with the target node, and use the sensing signal to perform sensing detection on the target node, expanding the application scenarios of the wireless communication system.

[0238] The above describes the transmission processes of the central station and the distributed node. The following describes the reception process of the target node.

[0239] Referring to Figure 15 , the target node 400 includes:

[0240] A target node antenna receiving module 410, configured to receive a transmission signal. The target node antenna receiving module 410 is composed of one or more antenna units.

[0241] The target node radio frequency signal extraction module 420 is used to extract signals from the transmitted signals to obtain communication signals and / or energy signals.

[0242] In one embodiment, the target node radio frequency signal extraction module 420 controls the switching of the transceiver signals according to the signal mode and transceiver mode used.

[0243] The target node energy module 430 is used to collect the energy in the energy signal to achieve wireless power supply. In one embodiment, the target node energy module 430 includes: an energy receiving module 431 and an energy management module 432. Among them, the energy receiving module 431 is composed of devices such as radio frequency to direct current conversion and direct current excitation, and the energy management module 432 is used to manage the received energy. The energy management includes: energy storage and energy utilization.

[0244] The target node communication transceiver module 440 is used to obtain communication data based on the communication signal and generate a communication feedback signal. In one embodiment, the target node communication transceiver module 440 is composed of devices such as a modem and a radio frequency front end.

[0245] As can be seen from the above, the target node 400 demodulates the transmitted signal according to the format of the received transmitted signal, extracts the energy signal and the communication signal, collects the energy in the energy signal to achieve wireless power supply, obtains communication data based on the communication signal and generates a communication feedback signal, and the target node 400 reflects the transmitted signal to obtain a sensing reflection signal.

[0246] The signal receiving processes of the central station and the distributed nodes are introduced below.

[0247] First, the receiving and processing process of the sensing reflection signal is introduced.

[0248] Refer to Figure 16 , the central station sensing receiving module 240 of the central station includes:

[0249] In one embodiment, in order to remove the noise influence in the process of receiving signals, based on the known bandwidth of the transmitted signal, the central station sensing receiving module 240 uses a band-pass filter to extract the signal bandwidth, and filters out other bandwidths, only allowing the bandwidth of the target received signal to pass, and the signals of other bandwidths do not pass, which can improve the operation accuracy of communication data and achieve the purpose of suppressing interference in the frequency domain.

[0250] The central station echo receiving radio frequency front end 241 is used to perform radio frequency front end processing on the received sensing reflection signal.

[0251] The central station matched filtering module 242 is used to perform pulse compression and matched filtering on the sensed reflection signal that has undergone radio frequency front end processing to obtain a first filtered signal.

[0252] Since the signal bandwidth determines the range resolution of the central station detection, using a narrow pulse signal can improve the resolution distance. However, if a narrow pulse is used, the transmission power of the central station will decrease, which will lead to a decrease in the signal-to-noise ratio and a shorter operating distance of the central station. In order for the central station to obtain detection information of target nodes at a long distance, it is necessary to increase the transmission power, that is, transmit a wide pulse signal. After receiving the signal, the central station matching filter module 242 compresses the wide pulse signal into a narrow pulse signal to improve the range resolution of the central station. This process is called matched filtering. In this embodiment, the central station matching filter module 242 can perform matched filtering processing to obtain a corresponding narrow pulse under the average transmission power of the wide pulse, improving the operating distance while improving the range resolution. The matched filtering process can use the signal transmitted with the first width (smaller) to obtain the same range resolution as the signal transmitted with the second width (larger), and the compression ratio is the first width / second width.

[0253] In one embodiment, matched filtering is used to implement matched filtering processing to obtain a first filtered signal. The sensed reflected signal can obtain the first filtered signal with the maximum output signal-to-noise ratio after passing through the matched filter.

[0254] The central station clutter filtering module 243 is used to filter out the clutter signal in the first filtered signal to obtain a detection signal.

[0255] In one embodiment, the sensed reflected signal is transmitted in the electromagnetic environment, which contains not only the echo signal of the target node, but also many clutter echoes. Clutter is generally the reflection of electromagnetic wave signals by substances in the environment, and its formation principle is similar to that of target reflection. In this embodiment, the clutter signal includes: ground clutter signal and meteorological clutter signal. Generally speaking, the amplitude of the clutter signal is much higher than that of the echo of the target node, and the echo of the target node is submerged in the clutter signal. In one embodiment, the echo signal of the target node and the clutter signal are distinguished by their different spectra. The spectrum of the slow clutter signal is generally distributed around zero frequency or an integer multiple of the pulse repetition frequency. Therefore, the detection signal in the first filtered signal can be sensed through the passband of the delay line canceller, and the clutter signal can be filtered by the stopband of the filter.

[0256] The central station target detection module 244 is used to detect and analyze the detection signal to obtain the first sensed data.

[0257] In one embodiment, the detection analysis includes range measurement, velocity measurement, and angle measurement. Among them, range measurement can use the pulse ranging method, velocity measurement uses the Doppler principle for velocity measurement, and angle measurement uses the principle of measuring the deviation angle between the main antenna beam and the antenna beam where the target node is located.

[0258] As can be seen from the above, the central station 200 uses the central station sensing receiving module 240 to detect and analyze the received sensing reflection signal to obtain the first sensing data.

[0259] Similar to the structure of the central station sensing receiving module 240 of the above central station 200, in the third preset working mode, in order to remove the noise influence in the process of receiving signals, based on the known bandwidth of the transmitted signal, the distributed node sensing receiving module 340 uses a band-pass filter to extract the signal bandwidth, filter out other bandwidths, and only allow the bandwidth of the target received signal to pass through, while the signals of other bandwidths do not pass through, which can improve the operation accuracy of communication data and achieve the purpose of suppressing interference in the frequency domain. Refer to Figure 17 , the distributed node sensing receiving module 340 of the distributed node 300 includes:

[0260] The distributed node echo receiving RF front-end 341 is used to perform RF front-end processing on the received sensing reflection signal.

[0261] The distributed node matched filtering module 342 is used to perform pulse compression and matched filtering on the sensing reflection signal that has undergone RF front-end processing to obtain a first filtered signal.

[0262] Since the signal bandwidth determines the range resolution of the distributed node detection, using a narrow pulse signal can improve the resolution distance. However, if a narrow pulse is used, the transmit power of the distributed node will decrease, which will lead to a decrease in the signal-to-noise ratio and a shorter operating distance of the distributed node. In order for the distributed node to obtain the detection information of a target node at a long distance, it is necessary to increase the transmit power, that is, transmit a wide pulse signal. After receiving the signal, the distributed node matched filtering module 342 compresses the wide pulse signal into a narrow pulse signal to improve the range resolution of the distributed node. This process is called matched filtering. In this embodiment, the distributed node matched filtering module 342 performing the matched filtering process can obtain a corresponding narrow pulse under the average transmit power of the wide pulse, improving the operating distance while improving the range resolution. The matched filtering process can use the signal transmitted with the first width (smaller) to obtain the same range resolution as the signal transmitted with the second width (larger), and the compression ratio is the first width / second width.

[0263] In one embodiment, the matched filtering is used to implement the matched filtering process to obtain the first filtered signal, and the sensing reflection signal can obtain the second filtered signal with the maximum output signal-to-noise ratio after passing through the matched filter.

[0264] The distributed node clutter filtering module 343 is used to filter out the clutter signal in the second filtered signal to obtain a detection signal.

[0265] In one embodiment, the sensed reflected signal is transmitted in an electromagnetic environment, which contains not only the echo signal of the target node, but also many clutter echoes. Clutter is generally the reflection of electromagnetic wave signals by substances in the environment, and its formation principle is similar to that of target reflection. In this embodiment, the clutter signals include: ground clutter signals and meteorological clutter signals. Generally speaking, the amplitude of the clutter signal is much higher than that of the echo of the target node, and the echo of the target node is submerged in the clutter signal. In one embodiment, the echo signal of the target node and the clutter signal are distinguished by their different frequency spectra. The frequency spectrum of the slow clutter signal is generally distributed around zero frequency or an integer multiple of the pulse repetition frequency. Therefore, the detection signal in the second filtered signal of the passband of the delay line canceller can be used, and the clutter signal can be filtered by the stopband of the filter.

[0266] The distributed node target detection module 344 is used to detect and analyze the detection signal to obtain the second sensed data.

[0267] In one embodiment, the detection and analysis include distance measurement, speed measurement, and angle measurement. Among them, pulse ranging method can be used for distance measurement, Doppler principle can be used for speed measurement, and the principle of measuring the deviation angle between the main antenna beam and the antenna beam where the target node is located can be used for angle measurement.

[0268] As can be seen from the above, the distributed node 300 uses the distributed node sensing and receiving module 340 to detect and analyze the received sensed reflected signal to obtain the second sensed data.

[0269] The following introduces the receiving and processing process of the communication feedback signal.

[0270] Refer to Figure 18 , the central station communication receiving module 250 of the central station includes:

[0271] The central station communication receiving RF front-end 251 is used to receive the communication feedback signal.

[0272] The central station communication signal demodulation module 252 is connected to the central station communication receiving RF front-end 251 and is used to obtain the communication feedback data according to the communication feedback signal.

[0273] As can be seen from the above, the central station uses the central station communication receiving module 250 to demodulate the communication feedback data of the received communication feedback signal, and realizes the communication process with the target node 400.

[0274] Refer to Figure 19 , the distributed node communication receiving module 350 of the distributed node includes:

[0275] The distributed node communication receiving RF front-end 351 is used to receive the communication feedback signal.

[0276] The distributed node communication signal demodulation module 352 is connected to the distributed node communication receiving radio frequency front-end 351, and is used to obtain the second communication feedback data according to the communication feedback signal.

[0277] As can be seen from the above, the distributed node uses the distributed node communication receiving module 350 to demodulate the received communication feedback signal to obtain the second communication feedback data, thereby realizing the communication process with the target node 400.

[0278] Next, the process of the central station and the distributed nodes generating the first transmission signal or the second transmission signal will be introduced in detail.

[0279] In one embodiment, when the preset working mode is the first working mode, the first transmission signal includes: a communication signal and a sensing signal, and the second transmission signal is an energy signal.

[0280] The central station and the distributed nodes respectively generate a communication signal, a sensing signal, and an energy signal according to communication requirements.

[0281] In one embodiment, when the preset working mode is the second working mode, the first transmission signal is a communication-sensing fusion signal, and the communication-sensing fusion signal is generated from the communication signal and the sensing signal according to the first fusion strategy, and the second transmission signal is an energy signal.

[0282] Referring to Figure 20 , the steps of generating the communication-sensing fusion signal according to the first fusion strategy include:

[0283] Step S201, using the sensing signal as the basic carrier signal.

[0284] Step S202, modulating according to the communication data on the basic carrier signal to obtain the communication-sensing fusion signal.

[0285] In one embodiment, the first fusion strategy is implemented by adding an information carrier to the sensing signal originally used for sensing.

[0286] For example, the sensing signal is a frequency-sweeping signal, and the frequency of the frequency-sweeping signal increases linearly with time, expressed as:

[0287]

[0288] wherein, A represents the signal amplitude, f0 represents the starting frequency, k represents the frequency-sweeping rate, φ0 represents the initial phase, and T0 represents the signal duration.

[0289] According to communication requirements, the signal amplitude A, the starting frequency f0, and the initial phase φ0 of the sensing signal can be adjusted to represent different communication data, so as to form different communication-sensing fusion signals.

[0290] It can be understood that in the above adjustment process, the amplitude shift keying (ASK) method is used to adjust the signal amplitude A, the frequency shift keying (FSK) method is used to adjust the starting frequency f0, and the phase shift keying (PSK) method is used to adjust the initial phase φ0, so as to obtain modulated different communication data on the sensing signal and obtain the required communication-sensing fusion signal.

[0291] In one embodiment, the central station or the distributed node can also implement the first fusion strategy by adding an information carrier to the sensing signal originally used for sensing in the form of orthogonal frequency division multiplexing (OFDM).

[0292] Taking the sensing signal as the basic carrier signal and modulating the communication signal on it, the obtained communication-sensing fusion signal is expressed as:

[0293]

[0294] where N s represents the number of symbols of orthogonal frequency division multiplexing, N c represents the number of subcarriers of orthogonal frequency division multiplexing, that is, the number of subcarriers in the basic carrier signal, d m,n represents the m-th symbol carried by the n-th subcarrier, f n =(n - 1)Δf represents the frequency of the n-th subcarrier, Δf represents the frequency interval of the subcarriers, T OFDM =T s +T g represents the symbol duration of orthogonal frequency division multiplexing, T s represents the data duration within the symbol, T g represents the cyclic prefix duration within the symbol.

[0295] In one embodiment, for the above communication-sensing fusion signal of orthogonal frequency division multiplexing, the sensed reflected signal received by the central station or the distributed node is expressed as:

[0296]

[0297] where α m,n represents the channel parameter of the m-th symbol on the n-th subcarrier.

[0298] By sampling the received sensed reflected signal and performing a fast Fourier transform, a received signal matrix can be obtained, and each element in the received signal matrix can be expressed as:

[0299]

[0300] Since the central station or the distributed nodes themselves know the format and attributes of the transmitted data, the central station target detection module or the distributed node target detection module can directly remove the data values from the received signal matrix to obtain a sensed data signal matrix that only contains sensed data. Each element in this sensed data signal matrix can be expressed as:

[0301]

[0302] By performing a fast Fourier transform on each column of the above-mentioned sensed data signal matrix, the Doppler information of the target node can be estimated. By performing an inverse fast Fourier transform on each row of the sensed data signal matrix, the delay information of the target node can be estimated, thereby obtaining the velocity information. Thus, the sensing process of the target node is completed.

[0303] It can be understood that demodulating the received orthogonal frequency division multiplexing communication feedback signal can obtain communication feedback data, thereby realizing the communication process.

[0304] As can be seen from the above, using the sensing signal as the basic carrier signal and modulating the communication data on the basic carrier signal can obtain a communication-sensing fusion signal.

[0305] In one embodiment, the communication-sensing fusion signal can also be obtained using an antenna beam.

[0306] Refer to Figure 21 , the steps of generating a communication-sensing fusion signal according to the first fusion strategy include:

[0307] Step S211, generate a beamforming matrix.

[0308] Step S212, modulate the sensing signal on the main lobe of the carrier signal and modulate the communication signal on the side lobe of the carrier signal according to the beamforming matrix to obtain a communication-sensing fusion signal.

[0309] In one embodiment, both the central station antenna array module of the central station or the distributed node antenna array module of the distributed node include multiple antennas. Therefore, the first fusion strategy can be used to use the main lobe of the beam of the carrier signal for sensing signals to achieve target detection, and use the side lobe of the beam of the carrier signal for communication signals to achieve data communication.

[0310] Taking the central station as an example for illustration:

[0311] For example, the central station antenna array module has N t antennas, the angle between the target node and the central station antenna array module is θ C , and the target node includes N r antennas.

[0312] The Q-bit data transmitted within each sensed signal pulse is represented by the binary sequence B q where q = 1, …, Q, the sensed signals are orthogonal waveform signals, and the sensed signals are represented as: Then the corresponding communication-sensing fusion signal is represented as:

[0313] X = WS R

[0314] where represents the beamforming matrix, the beamforming matrix is composed of beamforming vectors, and the beamforming matrix is represented as:

[0315] W = [B1w1+(1 - B1)w0, …, B Q w1+(1 - B Q )w0]

[0316] where w0 and w1 respectively represent the beamforming vectors corresponding to the data being 0 and the data being 1, and their specific values are obtained through the following optimization process:

[0317]

[0318]

[0319] w i H a(θ C ) = δ i

[0320] where a(θ) represents the transmit alignment vector, and δ i represents the sidelobe size of the alignment target node, δ0 < δ1.

[0321] The goal of the optimization process is to minimize the error between the beam amplitude of the sensed signal in the main lobe of the beam and the ideal state as much as possible, while satisfying the sidelobe size limit.

[0322] In one embodiment, assume that the transmission signal of the central station transmitter is the second type of transmission signal generated by the first fusion strategy, and the first fusion strategy is to obtain the communication-sensing fusion signal using the antenna beam. Then the communication-sensing fusion signal received by the target node is represented as:

[0323]

[0324] where α represents the channel parameter, b(φ C ) represents the receive-end beamforming vector of the receive module 410 of the target node's antenna at the target node, φ C represents the angle of arrival, Z C represents the channel noise, and B qRepresents the binary sequence of Q-bit data transmitted within the sensing signal pulse, and a(θ) represents the transmit alignment vector. Represents the beamforming matrix of the central station antenna array module of the central station, and w0 and w1 respectively represent the beamforming vectors when the corresponding data is 0 and when the corresponding data is 1.

[0325] The target node RF signal extraction module 420 of the target node performs pulse compression and matched filtering on the communication and sensing fusion signal to obtain:

[0326]

[0327] where z C,q Represents the noise after passing through the q-th matched filter.

[0328] The target node RF signal extraction module 420 of the target node further multiplies the result after matched filtering by the receive-end beamforming vector of the target node antenna receiving module 410 to obtain the communication signal:

[0329]

[0330] where λ represents a set threshold function.

[0331] It can be understood that the purpose of the threshold function here is to perform a windowing operation to remove information such as noise interference in the signal.

[0332] In one embodiment, a frequency-modulated continuous wave is used as the sensing signal, and the communication signal is adjusted using quadrature amplitude modulation (QAM) to obtain the above-mentioned communication and sensing fusion signal.

[0333] In one embodiment, when the preset working mode is the third working mode, the first transmission signal is an energy signal, the second transmission signal is a communication and sensing fusion signal, and the communication and sensing fusion signal is generated from the communication signal and the sensing signal according to the first fusion strategy. The method for generating the communication and sensing fusion signal of the second transmission signal is the same as that of the above-mentioned second working mode.

[0334] In one embodiment, when the preset working mode is the fourth working mode, the first transmission signal is a sensing signal, the second transmission signal is an information and energy fusion signal, and the information and energy fusion signal is generated from the communication signal and the energy signal according to the second fusion strategy.

[0335] Referring to Figure 22 , the steps for generating the information and energy fusion signal according to the second fusion strategy include:

[0336] Step S221, generate the first fusion allocation parameter.

[0337] In one embodiment, the first fusion allocation parameter includes: a first parameter and a second parameter, where the first parameter is used to characterize the energy signal, and the second parameter is used to characterize the communication signal.

[0338] Step S222: Generate an information-energy fusion signal using the energy signal and the communication signal according to a preset multiplexing strategy and the first fusion allocation parameter.

[0339] In one embodiment, the preset multiplexing strategy includes one of a time-division multiplexing strategy, a frequency-division multiplexing strategy, or a space-division multiplexing strategy.

[0340] When the preset multiplexing strategy is space-division multiplexing:

[0341] In one embodiment, referring to Figure 23 , which is a specific implementation flowchart of step S222 shown in an embodiment. In the embodiments of the present application, step S222 of generating an information-energy fusion signal using the energy signal and the communication signal according to a preset multiplexing strategy and the first fusion allocation parameter includes:

[0342] Step S2221: Allocate the preset carrier according to the first fusion allocation parameter to obtain subcarrier information.

[0343] In one embodiment, based on channel quality-related parameters, subcarrier, power, and spectrum pre-allocation can be performed on the data streams corresponding to the communication signal, the sensing signal, and the energy signal in the baseband signal in the same frequency band to generate subcarrier information. Here, the subcarrier information corresponds to the allocation parameters of different signals. For example, the subcarrier information includes: communication signal subcarriers and energy signal subcarriers. Different signals are allocated to different subcarriers to obtain corresponding baseband signals, which are respectively parallel communication signal baseband signals and energy signal baseband signals.

[0344] Step S2222: Based on the subcarrier information, generate an information-energy fusion signal according to the communication signal and the energy signal within the preset frequency band.

[0345] In one embodiment, the above parallel communication signal baseband signal and energy signal baseband signal are subjected to serial-parallel conversion to generate parallel data streams, and then the parallel data streams are classified. Corresponding modulation parameter allocation, such as power spectrum allocation, spectrum allocation, etc., is performed on the baseband signals in the parallel data streams according to the allocation parameters of different signals. Finally, the communication signal baseband signal and the energy signal baseband signal in the parallel data streams are modulated onto the pre-allocated subcarriers to obtain a serial data stream.

[0346] As can be seen from the above, in the embodiments of the present application, fusion is performed based on the carrier, and subcarriers are allocated in the same frequency band, so that an information-energy fusion signal is generated according to the communication signal and the energy signal, realizing the transmission of information and energy in the same signal.

[0347] When the preset multiplexing strategy is time division multiplexing:

[0348] In one embodiment, referring to Figure 24 , which is a specific implementation flowchart of step S222 shown in an embodiment. In the embodiments of the present application, step S222 of generating an information-energy fusion signal using an energy signal and a communication signal according to a preset multiplexing strategy and a first fusion allocation parameter includes:

[0349] Step S2223: Allocate the preset transmission time according to the first fusion allocation parameter to obtain transmission time information.

[0350] In one embodiment, based on transmission time-related parameters, the data streams corresponding to the communication signal and the energy signal in the baseband signal can be time-allocated at different transmission times to generate transmission time information. Here, the transmission time information corresponds to the allocation parameters of different signals. For example, the transmission time information includes: the communication signal transmission time and the energy signal transmission time. Different signals are allocated to different transmission times to obtain corresponding baseband signals, which are respectively the parallel communication signal baseband signal and the energy signal baseband signal.

[0351] Step S2224: Based on the transmission time information, generate an information-energy fusion signal in a preset frequency band according to the communication signal and the energy signal.

[0352] In one embodiment, the above parallel communication signal baseband signal and energy signal baseband signal are subjected to serial-parallel conversion to generate parallel data streams, and then the parallel data streams are classified. The baseband signals in the parallel data streams are modulated accordingly according to the transmission times of different signals. Finally, the communication signal baseband signal and the energy signal baseband signal in the parallel data streams are obtained as a serial data stream according to the pre-allocated transmission time.

[0353] In one embodiment, for example, when the transmission time is T, T is divided into T1 and T2 in sequence according to the actual transmission requirements. The communication signal baseband signal is transmitted in the T1 time period, and the energy signal baseband signal is transmitted in the T2 time period.

[0354] As can be seen from the above, in the embodiments of the present application, fusion is performed based on the transmission time, and the transmission time is allocated in a preset frequency band, so that an information-energy fusion signal is generated according to the communication signal and the energy signal, realizing the transmission of information and energy in the same signal.

[0355] When the preset multiplexing strategy is frequency division multiplexing:

[0356] In one embodiment, referring to Figure 25, which is a specific implementation flowchart of step S222 shown in an embodiment. In the embodiments of the present application, step S222 of generating an information-energy fusion signal using an energy signal and a communication signal according to a preset multiplexing strategy and a first fusion allocation parameter includes:

[0357] Step S2225: Allocate the transmission frequency band according to the first fusion allocation parameter to obtain transmission frequency band information.

[0358] In one embodiment, according to the relevant parameters of the transmission frequency band, the data streams corresponding to the communication signal energy signals in the baseband signal are allocated in different transmission frequency bands to generate transmission frequency band information through frequency band allocation. Here, the transmission frequency band information corresponds to the allocation parameters of different signals. For example, the transmission frequency band information includes: the communication signal transmission frequency band and the energy signal transmission frequency band. Different signals are allocated to different frequency bands to obtain corresponding baseband signals, namely, parallel communication signal baseband signals and energy signal baseband signals.

[0359] Step S2226: Based on the transmission frequency band information, generate an information-energy fusion signal according to the communication signal and the energy signal in different frequency bands.

[0360] In one embodiment, the above-mentioned parallel communication signal baseband signal and energy signal baseband signal are subjected to serial-parallel conversion to generate parallel data streams, and then the parallel data streams are classified. The baseband signals in the parallel data streams are modulated accordingly according to the transmission time of different signals. Finally, the communication signal baseband signal and the energy signal baseband signal in the parallel data streams are obtained as a serial data stream according to the pre-allocated transmission time.

[0361] As can be seen from the above, in the embodiments of the present application, fusion is performed based on the transmission frequency band. The frequency band is allocated, and an information-energy fusion signal is generated according to the communication signal and the energy signal in different frequency bands, so as to realize the transmission of information and energy in the same signal.

[0362] Through the above three methods, the information-energy fusion signal of the distributed node includes the relevant information of the communication signal and the energy signal.

[0363] The wireless communication system proposed in the embodiments of the present application includes: a central station and at least one distributed node that send transmission signals according to a preset working mode, a target node that receives the transmission signals, and the target node extracts signals from the transmission signals according to the type of the transmission signals to obtain communication signals and / or energy signals; collects the energy in the energy signals to realize wireless power supply, obtains communication data according to the communication signals and generates communication feedback signals; the central station or the distributed node receives the communication feedback signals and / or the sensing reflection signals generated by the target node reflecting the transmission signals.

[0364] The wireless communication system according to the embodiments of the present application uses only one set of hardware and can adapt to different working modes through preset working mode adjustment, avoiding multiple sets of hardware and increasing the system complexity and cost. Moreover, since the transmitted signal includes an energy signal, a communication signal, and a sensing signal, the wireless communication system can simultaneously complete the communication process with the target node and use the sensing signal to perform sensing detection on the target node, expanding the application scenarios of the wireless communication system. At the same time, the energy signal is used to supply power to the wireless communication device, avoiding the need to frequently replace the battery, reducing the maintenance cost, and reducing environmental pollution caused by discarded batteries.

[0365] The embodiments of the present application also provide a wireless communication method applied to the above wireless communication system.

[0366] Figure 26 is an optional flowchart of the wireless communication method provided by the embodiments of the present application. Figure 26 The method in may include but is not limited to steps S2610 to S2630. At the same time, it can be understood that the embodiments of the present application do not specifically limit the order of steps S2610 to S2630 in, and the order of steps can be adjusted according to actual needs, or some steps can be reduced or added. Figure 26 In, the order of steps S2610 to S2630 is not specifically limited, and the order of steps can be adjusted according to actual needs, or some steps can be reduced or added.

[0367] Step S2610: Generate a transmission signal according to a preset working mode.

[0368] In one embodiment, the transmission signal includes: a first transmission signal and / or a second transmission signal.

[0369] Among them, when the preset working mode is the first working mode, the first transmission signal includes: a communication signal and a sensing signal, and the second transmission signal is an energy signal;

[0370] When the preset working mode is the second working mode, the first transmission signal is a communication-sensing fusion signal, which is generated by the communication signal and the sensing signal according to the first fusion strategy, and the second transmission signal is an energy signal;

[0371] When the preset working mode is the third working mode, the first transmission signal is an energy signal, and the second transmission signal is a communication-sensing fusion signal;

[0372] When the preset working mode is the fourth working mode, the first transmission signal is a sensing signal, and the second transmission signal is a communication-energy fusion signal, which is generated by the communication signal and the energy signal according to the first fusion strategy.

[0373] Step S2620: Send the transmission signal to the target node.

[0374] In one embodiment, the target node extracts signals from the transmitted signal and, according to a preset working mode, extracts signals from the transmitted signal to obtain a communication signal and / or an energy signal, and collects the energy in the energy signal to achieve wireless power supply, or obtains communication data based on the communication signal and generates a communication feedback signal.

[0375] Step S2630: Receive the communication feedback signal and / or the sensed reflection signal.

[0376] In one embodiment, the sensed reflection signal is generated by the target node reflecting the transmitted signal.

[0377] As can be seen from the above, the central station that transmits the transmitted signal according to the preset working mode, the target node that receives the transmitted signal, and the target node extract signals from the transmitted signal according to the type of the transmitted signal to obtain a communication signal and / or an energy signal; collect the energy in the energy signal to achieve wireless power supply, and obtain communication data based on the communication signal and generate a communication feedback signal.

[0378] In one embodiment, the central station receives the communication feedback signal and performs detection and analysis based on the sensed reflection signal to obtain first sensed data; and / or, receives the communication feedback signal and obtains first communication feedback data based on the communication feedback signal.

[0379] In one embodiment, the distributed node receives the communication feedback signal and performs detection and analysis based on the sensed reflection signal to obtain second sensed data; and / or, receives the communication feedback signal and obtains second communication feedback data based on the communication feedback signal.

[0380] In one embodiment, when the preset working mode is the first working mode, the central station receives the communication feedback signal and the sensed reflection signal; when the preset working mode is the second working mode, the central station receives the communication feedback signal and the sensed reflection signal; when the preset working mode is the third working mode, the distributed node receives the communication feedback signal and the sensed reflection signal; when the preset working mode is the fourth working mode, the central station receives the sensed reflection signal and the distributed node receives the communication feedback signal.

[0381] The generation process of the transmitted signal in the wireless communication method of this embodiment is described below.

[0382] In one embodiment, when the preset working mode is the first working mode, the first transmitted signal includes: a communication signal and a sensing signal, and the second transmitted signal is an energy signal.

[0383] The central station and the distributed node respectively generate a communication signal, a sensing signal, and an energy signal according to communication requirements.

[0384] In one embodiment, when the preset working mode is the second working mode, the first transmission signal is a communication and sensing fusion signal, which is generated by a communication signal and a sensing signal according to a first fusion strategy, and the second transmission signal is an energy signal.

[0385] The steps of generating the communication and sensing fusion signal according to the first fusion strategy include: using the sensing signal as a basic carrier signal, and then modulating according to the communication data on the basic carrier signal to obtain the communication and sensing fusion signal.

[0386] In one embodiment, the first fusion strategy is implemented by adding an information carrier to the sensing signal originally used for sensing.

[0387] For example, the sensing signal is a frequency-swept signal, and the frequency of the frequency-swept signal increases linearly with time, expressed as:

[0388]

[0389] where A represents the signal amplitude, f0 represents the starting frequency, k represents the frequency-sweeping rate, φ0 represents the initial phase, and T0 represents the signal duration.

[0390] According to the communication requirements, the signal amplitude A, the starting frequency f0, and the initial phase φ0 of the sensing signal can be adjusted to represent different communication data, so as to form different communication and sensing fusion signals.

[0391] It can be understood that in the above adjustment process, the amplitude-shift keying method (ASK) is used to adjust the signal amplitude A, the frequency-shift keying method (FSK) is used to adjust the starting frequency f0, and the phase-shift keying method (PSK) is used to adjust the initial phase φ0, so as to modulate different communication data on the sensing signal to obtain the required communication and sensing fusion signal.

[0392] In one embodiment, the communication and sensing fusion signal can be obtained by using an antenna beam. The steps of generating the communication and sensing fusion signal according to the first fusion strategy include: generating a beamforming matrix, and then modulating the sensing signal on the main lobe of the carrier signal and modulating the communication signal on the side lobe of the carrier signal according to the beamforming matrix to obtain the communication and sensing fusion signal.

[0393] In one embodiment, both the central station antenna array module of the central station or the distributed node antenna array module of the distributed node include multiple antennas. Therefore, the first fusion strategy can be used to use the main lobe of the beam of the carrier signal for sensing signals to achieve target detection, and use the side lobe of the beam of the carrier signal for communication signals to achieve data communication.

[0394] In one embodiment, when the preset working mode is the third working mode, the first transmission signal is an energy signal, the second transmission signal is a communication-sensing fusion signal, and the communication-sensing fusion signal is generated from a communication signal and a sensing signal according to a first fusion strategy. The method for generating the communication-sensing fusion signal of the second transmission signal is the same as that of the above-mentioned second working mode.

[0395] In one embodiment, when the preset working mode is the fourth working mode, the first transmission signal is a sensing signal, the second transmission signal is a communication-energy fusion signal, and the communication-energy fusion signal is generated from a communication signal and an energy signal according to a second fusion strategy.

[0396] The steps for generating the communication-energy fusion signal according to the second fusion strategy include: generating first fusion allocation parameters, and generating the communication-energy fusion signal from the energy signal and the communication signal according to a preset multiplexing strategy and the first fusion allocation parameters.

[0397] In one embodiment, the first fusion allocation parameters include: a first parameter and a second parameter, where the first parameter is used to characterize the energy signal and the second parameter is used to characterize the communication signal.

[0398] In one embodiment, the preset multiplexing strategy includes one of a time-division multiplexing strategy, a frequency-division multiplexing strategy, or a space-division multiplexing strategy.

[0399] When the preset multiplexing strategy is space-division multiplexing: allocate the preset carrier according to the first fusion allocation parameters to obtain subcarrier information, and then generate the communication-energy fusion signal from the communication signal and the energy signal within a preset frequency band based on the subcarrier information.

[0400] In one embodiment, based on channel quality-related parameters, subcarrier, power, and spectrum pre-allocation can be performed on the data streams corresponding to the communication signal, sensing signal, and energy signal in the baseband signal within the same frequency band to generate subcarrier information, where the subcarrier information corresponds to the allocation parameters of different signals. For example, the subcarrier information includes: communication signal subcarriers and energy signal subcarriers, and different signals are allocated to different subcarriers to obtain corresponding baseband signals, namely parallel communication signal baseband signals and energy signal baseband signals.

[0401] In one embodiment, the above-mentioned parallel communication signal baseband signal and energy signal baseband signal are subjected to serial-parallel conversion to generate parallel data streams, and then the parallel data streams are classified, and corresponding modulation parameter allocation, such as power spectrum allocation, spectrum allocation, etc., is performed on the baseband signals in the parallel data streams according to the allocation parameters of different signals. Finally, the communication signal baseband signal and energy signal baseband signal in the parallel data streams are modulated onto the pre-allocated subcarriers to obtain serial data streams.

[0402] As can be seen from the above, in the embodiments of the present application, fusion is performed based on a carrier. In the same frequency band, subcarriers are allocated so that an information-energy fusion signal is generated according to a communication signal and an energy signal, realizing the transmission of information and energy in the same signal.

[0403] When the preset multiplexing strategy is time-division multiplexing: the preset transmission time is allocated according to the first fusion allocation parameter to obtain transmission time information, and then based on the transmission time information, an information-energy fusion signal is generated according to the communication signal and the energy signal within the preset frequency band.

[0404] In one embodiment, based on transmission time-related parameters, time allocation can be performed on the data streams corresponding to the communication signal and the energy signal in the baseband signal at different transmission times to generate transmission time information, where the transmission time information corresponds to the allocation parameters of different signals. For example, the transmission time information includes: the communication signal transmission time and the energy signal transmission time. Different signals are allocated to different transmission times to obtain corresponding baseband signals, which are respectively parallel communication signal baseband signals and energy signal baseband signals.

[0405] In one embodiment, the above parallel communication signal baseband signal and energy signal baseband signal are subjected to serial-parallel conversion to generate parallel data streams, and then the parallel data streams are classified. The baseband signals in the parallel data streams are modulated accordingly according to the transmission times of different signals. Finally, the communication signal baseband signal and the energy signal baseband signal in the parallel data streams are obtained as a serial data stream according to the pre-allocated transmission time.

[0406] As can be seen from the above, in the embodiments of the present application, fusion is performed based on the transmission time. The transmission time is allocated within the preset frequency band so that an information-energy fusion signal is generated according to the communication signal and the energy signal, realizing the transmission of information and energy in the same signal.

[0407] When the preset multiplexing strategy is frequency-division multiplexing: the transmission frequency band is allocated according to the first fusion allocation parameter to obtain transmission frequency band information, and then based on the transmission frequency band information, an information-energy fusion signal is generated according to the communication signal and the energy signal in different frequency bands.

[0408] In one embodiment, based on the relevant parameters of the transmission frequency band, the data streams corresponding to the communication signal and the energy signal in the baseband signal are allocated to different transmission frequency bands for frequency band allocation to generate transmission frequency band information, where the transmission frequency band information corresponds to the allocation parameters of different signals. For example, the transmission frequency band information includes: the communication signal transmission frequency band and the energy signal transmission frequency band. Different signals are allocated to different frequency bands to obtain corresponding baseband signals, which are respectively parallel communication signal baseband signals and energy signal baseband signals.

[0409] In one embodiment, the above-mentioned parallel communication signal baseband signal and energy signal baseband signal are subjected to serial-parallel conversion to generate a parallel data stream, and then the parallel data stream is classified. The baseband signals in the parallel data stream are modulated accordingly according to the transmission times of different signals. Finally, the communication signal baseband signal and the energy signal baseband signal in the parallel data stream are obtained as a serial data stream according to the pre-allocated transmission times.

[0410] Through the above three methods, the information related to the communication signal and the energy signal is included in the signal energy fusion of the distributed node.

[0411] It should be noted that the wireless communication method in the embodiments of the present application is the execution process of the sensing relay node in the wireless communication system in the above embodiments. It belongs to the same inventive concept as the above wireless communication system. Therefore, these embodiments have the same implementation principles and technical effects, which will not be elaborated here.

[0412] In addition, an embodiment of the embodiments of the present application further provides a computer device, which includes: a memory, a processor, and a computer program stored on the memory and executable on the processor.

[0413] The processor and the memory can be connected through a bus or other means.

[0414] As a non-transitory computer-readable storage medium, the memory can be used to store non-transitory software programs and non-transitory computer-executable programs. In addition, the memory can include high-speed random access memory, and can also include non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some embodiments, the memory may optionally include a memory remotely provided with respect to the processor, and these remote memories can be connected to the processor through a network. Examples of the above network include, but are not limited to, the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0415] The non-transitory software programs and instructions required to implement the wireless communication method in the above embodiments are stored in the memory, and when executed by the processor, they execute the wireless communication method in the above embodiments.

[0416] In addition, an embodiment of the embodiments of the present application further provides a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are executed by a processor or a controller, for example, executed by a processor in the above computer device embodiment, the processor can execute the wireless communication method in the above embodiments.

[0417] For another example, when executed by a processor in the computer device embodiment described above, the processor may be caused to execute the wireless communication method in the above embodiment.

[0418] Those of ordinary skill in the art will appreciate that all or some of the steps and systems in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or transitory medium). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disks (DVDs) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and that can be accessed by a computer. In addition, as is well known to those of ordinary skill in the art, a communication medium typically includes computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery medium.

[0419] The above is a specific description of the preferred embodiments of the present application, but the embodiments of the present application are not limited to the above embodiments. Those skilled in the art can also make various equivalent deformations or substitutions without departing from the spirit of the embodiments of the present application, and these equivalent deformations or substitutions are all included within the scope defined by the claims of the embodiments of the present application.

Claims

1. A distributed wireless communication system, characterized in that, Including: A central station for sending a first transmission signal according to a preset working mode; At least one distributed node for sending a second transmission signal according to the preset working mode; When the preset working mode is the first working mode, the first transmission signal includes a communication signal and a sensing signal, and the second transmission signal is an energy signal; When the preset working mode is the second working mode, the first transmission signal is a communication and sensing fusion signal, which is generated by the communication signal and the sensing signal according to a first fusion strategy, and the second transmission signal is an energy signal; When the preset working mode is the third working mode, the first transmission signal is an energy signal, and the second transmission signal is a communication and sensing fusion signal; When the preset working mode is the fourth working mode, the first transmission signal is a sensing signal, and the second transmission signal is a communication and energy fusion signal, which is generated by the communication signal and the energy signal according to a second fusion strategy; At least one target node for receiving the transmission signal, where the transmission signal includes the first transmission signal and / or the second transmission signal, and performing signal extraction on the transmission signal according to the preset working mode to obtain the communication signal and / or the energy signal; The target node is further configured to collect the energy in the energy signal to achieve wireless power supply; or, obtain communication data according to the communication signal and generate a communication feedback signal; The central station and the distributed node are further configured to receive the communication feedback signal and / or the sensing reflection signal, where the sensing reflection signal is generated by the target node reflecting the transmission signal; Wherein, when the preset working mode is the first working mode, the second working mode, and the fourth working mode, the distance between the central station and the target node is greater than the distance between the distributed node and the target node; when the preset working mode is the third working mode, the distance between the central station and the target node is less than the distance between any distributed node and the target node.

2. The distributed wireless communication system according to claim 1, wherein The central station includes: A central station waveform generation module for generating a first transmission baseband signal of the first transmission signal according to a preset working mode; A central station transmitting radio frequency processing module for performing radio frequency processing on the first transmission baseband signal to obtain the first transmission signal; A central station antenna array module for sending the first transmission signal to the target node; A central station receiving module for receiving the sensing reflection signal and performing detection and analysis according to the sensing reflection signal to obtain first sensing data; and / or, receiving the communication feedback signal and obtaining first communication feedback data according to the communication feedback signal.

3. The distributed wireless communication system according to claim 2, wherein The central station receiving module includes a central station sensing receiving module and / or a central station communication receiving module; The central station sensing receiving module is configured to receive the sensing reflection signal and perform detection and analysis according to the sensing reflection signal to obtain first sensing data; The central station communication receiving module is used to receive the communication feedback signal and obtain first communication feedback data according to the communication feedback signal.

4. The distributed wireless communication system according to claim 2, wherein The distributed node includes: A distributed node waveform generation module, configured to generate a second transmission baseband signal of the second transmission signal according to a preset working mode; A distributed node transmitting radio frequency processing module, configured to perform radio frequency processing on the second transmission baseband signal to obtain the second transmission signal; A distributed node antenna array module, configured to transmit the second transmission signal to the target node.

5. The distributed wireless communication system according to claim 4, wherein The distributed node further includes: a distributed node receiving module; The distributed node receiving module includes: a distributed node sensing receiving module and / or a distributed node communication receiving module; The distributed node sensing receiving module is used to receive the sensing reflection signal and perform detection and analysis according to the sensing reflection signal to obtain second sensing data; The distributed node communication receiving module is used to receive the communication feedback signal and obtain second communication feedback data according to the communication feedback signal.

6. The distributed wireless communication system according to claim 4, wherein When the preset working mode is the first working mode: The central station waveform generation module includes: A central station communication signal generation module, configured to generate a communication baseband signal; A central station sensing signal generation module, configured to generate a sensing baseband signal; The central station transmitting radio frequency processing module includes: A central station communication signal radio frequency front end, configured to perform radio frequency processing on the communication baseband signal to obtain the communication signal; A central station sensing signal radio frequency front end, configured to perform radio frequency processing on the sensing baseband signal to obtain the sensing signal; The distributed node waveform generation module includes: A distributed node energy signal generation module, configured to generate an energy baseband signal; The distributed node transmitting radio frequency processing module includes: A distributed node energy signal radio frequency front end, configured to perform radio frequency processing on the energy baseband signal to obtain the energy signal.

7. The distributed wireless communication system according to claim 4, wherein When the preset working mode is the second working mode: The central station waveform generation module includes: A central station communication and sensing fusion signal generation module, configured to generate a communication and sensing fusion baseband signal according to the communication signal and the sensing signal; The central station transmitting radio frequency processing module includes: A central station communication and sensing fusion signal radio frequency front end, configured to perform radio frequency processing on the communication and sensing fusion baseband signal to obtain the communication and sensing fusion signal; The distributed node waveform generation module includes: A distributed node energy signal generation module, configured to generate an energy baseband signal; The distributed node transmitting radio frequency processing module includes: A distributed node energy signal radio frequency front end, configured to perform radio frequency processing on the energy baseband signal to obtain the energy signal.

8. The distributed wireless communication system according to claim 4, characterized in that, When the preset working mode is the third working mode: The central station waveform generation module includes: A central station energy signal generation module, configured to generate an energy baseband signal; The central station transmitting radio frequency processing module includes: A central station energy signal radio frequency front end, configured to perform radio frequency processing on the energy baseband signal to obtain the energy signal; The distributed node waveform generation module includes: A distributed node communication and sensing fusion signal generation module, configured to generate a communication and sensing fusion baseband signal according to the communication signal and the sensing signal; The distributed node transmission radio frequency (RF) processing module includes: A distributed node communication and sensing fusion signal RF front-end, configured to perform RF processing on the communication and sensing fusion baseband signal to obtain the communication and sensing fusion signal.

9. The distributed wireless communication system according to claim 4, wherein When the preset operating mode is the fourth operating mode: The central station waveform generation module includes: A central station sensing signal generation module, configured to generate a sensing baseband signal; The central station transmission RF processing module includes: A central station sensing signal RF front-end, configured to perform RF processing on the sensing baseband signal to obtain the sensing signal; The distributed node waveform generation module includes: A distributed node communication and energy fusion signal generation module, configured to generate a communication and energy fusion baseband signal according to a communication signal and an energy signal; The distributed node transmission RF processing module includes: A distributed node communication and energy fusion signal RF front-end, configured to perform RF processing on the communication and energy fusion baseband signal to obtain the communication and energy fusion signal.

10. The distributed wireless communication system according to claim 3, wherein The central station sensing reception module includes: A central station echo reception RF front-end, configured to perform RF front-end processing on the received sensing reflection signal; A central station matched filtering module, configured to perform pulse compression and matched filtering on the sensing reflection signal that has undergone RF front-end processing to obtain a first filtered signal; A central station clutter filtering module, configured to filter out clutter signals in the first filtered signal to obtain a detection signal; A central station target detection module, configured to perform detection and analysis on the detection signal to obtain the first sensing data.

11. The distributed wireless communication system according to claim 3, wherein The central station communication reception module includes: A central station communication reception RF front-end, configured to receive the communication feedback signal; A central station communication signal demodulation module, configured to obtain first communication feedback data according to the communication feedback signal.

12. The distributed wireless communication system according to claim 5, wherein The distributed node sensing reception module includes: A distributed node echo reception RF front-end, configured to perform RF front-end processing on the received sensing reflection signal; A distributed node matched filtering module, configured to perform pulse compression and matched filtering on the sensing reflection signal that has undergone RF front-end processing to obtain a second filtered signal; A distributed node clutter filtering module, configured to filter out clutter signals in the second filtered signal to obtain a detection signal; A distributed node target detection module, configured to perform detection and analysis on the detection signal to obtain the second sensing data.

13. The distributed wireless communication system according to claim 5, characterized in that, The distributed node communication reception module includes: A distributed node communication reception RF front-end, configured to receive the communication feedback signal; A distributed node communication signal demodulation module, configured to obtain second communication feedback data according to the communication feedback signal.

14. The distributed wireless communication system according to claim 1, characterized in that The target node includes: A target node antenna reception module, configured to receive the transmission signal; A target node RF signal extraction module, configured to extract signals from the transmission signal to obtain the communication signal and / or the energy signal; A target node energy module, configured to collect energy in the energy signal to achieve wireless power supply; A target node communication transceiver module, configured to obtain communication data according to the communication signal and generate a communication feedback signal.

15. The distributed wireless communication system according to any one of claims 1 to 14, characterized in that, The steps of the first fusion strategy include: Using the sensing signal as a basic carrier signal; Modulating according to the communication data on the basic carrier signal to obtain the communication and sensing fusion signal.

16. The distributed wireless communication system according to any one of claims 1 to 14, characterized in that, The steps of the first fusion strategy include: Generate a beamforming matrix; Modulate the sensing signal on the main lobe of the carrier signal and modulate the communication signal on the side lobe of the carrier signal according to the beamforming matrix to obtain the communication-sensing fusion signal.

17. The distributed wireless communication system according to any one of claims 1 to 14, characterized in that, The steps of the second fusion strategy include: Generate a first fusion allocation parameter; Generate the communication-energy fusion signal using the communication signal and the energy signal according to a preset multiplexing strategy and the first fusion allocation parameter, where the preset multiplexing strategy includes one of a time-division multiplexing strategy, a frequency-division multiplexing strategy, or a space-division multiplexing strategy.

18. A wireless communication method, characterized in that, The method includes: Transmit a transmission signal according to a preset working mode so that at least one target node receives the transmission signal, and extract signals from the transmission signal according to the preset working mode to obtain a communication signal and / or an energy signal; and collect the energy in the energy signal to achieve wireless power supply; the transmission signal includes: a first transmission signal and / or a second transmission signal; Receive the communication feedback signal generated by the target node according to the communication signal, and / or, the sensing reflection signal generated by the target node reflecting the transmission signal; When the preset working mode is the first working mode, the first transmission signal includes: a communication signal and a sensing signal, and the second transmission signal is an energy signal; When the preset working mode is the second working mode, the first transmission signal is a communication-sensing fusion signal, which is generated by a communication signal and a sensing signal according to the first fusion strategy, and the second transmission signal is an energy signal; When the preset working mode is the third working mode, the first transmission signal is an energy signal, and the second transmission signal is a communication-sensing fusion signal; When the preset working mode is the fourth working mode, the first transmission signal is a sensing signal, and the second transmission signal is a communication-energy fusion signal, which is generated by a communication signal and an energy signal according to the second fusion strategy; Wherein, when the preset working mode is the first working mode, the second working mode, or the fourth working mode, the distance between the central station and the target node is greater than the distance between the distributed node and the target node; when the preset working mode is the third working mode, the distance between the central station and the target node is less than the distance between any distributed node and the target node.

19. A wireless communication method according to claim 18, characterized in that, The steps of the first fusion strategy include: Use the sensing signal as the basic carrier signal; Modulate according to communication data on the basic carrier signal to obtain the communication-sensing fusion signal.

20. A wireless communication method according to claim 18, characterized in that, The steps of the first fusion strategy include: Generate a beamforming matrix; Modulate and map the sensing signal to the main lobe of the antenna beam and modulate and map the communication signal to the side lobe of the antenna beam according to the beamforming matrix to obtain the communication-sensing fusion signal.

21. A wireless communication method according to claim 18, characterized in that, The steps of the second fusion strategy include: Generate a second fusion allocation parameter; According to the preset multiplexing strategy and the second fusion allocation parameter, generate the signal energy fusion signal by using the communication signal and the energy signal, wherein the preset multiplexing strategy includes one of a time division multiplexing strategy, a frequency division multiplexing strategy, or a space division multiplexing strategy.

22. An electronic device, characterized in that, The electronic device includes a memory and a processor, the memory stores a computer program, and when the processor executes the computer program, the wireless communication method according to any one of claims 18 to 21 is implemented.

23. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, the wireless communication method according to any one of claims 18 to 21 is implemented.

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