Device and method for designing composite frame structure of common-inductance integrated signal

Abstract

The invention discloses a device and a method for designing a communication and inductance integrated signal composite frame structure, and belongs to the technical field of information. According to the method, the basic scheduling unit time slot is modified, the sensing capability is improved, and communication and sensing integration is completed; the properties of OFDM symbols are stipulated in time slot formats, and various different types of communication scheduling can be realized by adopting different time slot combinations; by adding perception in a downlink time slot, a perception echo signal can be received, so that uplink and downlink communication and downlink perception capability between communication equipment and a user side are met; the time-division and inductance fusion design scheme can prevent the sensing signal from being interfered by other signals, and can improve the sensing capability on the premise of ensuring the communication efficiency.

Description

Technical Field

[0001] The invention belongs to the field of information technology, and in particular relates to a device and method for designing a composite frame structure of a synaesthesia integrated signal. Background Art

[0002] With the changes in the global military landscape and the development and widespread application of radio equipment, electronic warfare, as the core of maintaining battlefield information dominance, has become the foundation and important means of modern warfare. The traditional working system of communication testing between electronic equipment can no longer cope with the enemy's comprehensive electronic weapons, and it is difficult to meet the needs of today's combat environment for the multifunctional, miniaturized, and networked development of electronic equipment systems. The high-end strength and strategic means of modern military are constantly strengthening, and the demand for integrated joint operations of multiple types of electronic equipment is becoming increasingly strong.

[0003] To meet the needs of modern warfare environments, the integrated communication and perception system realizes the integration of system resources. By transmitting integrated signals, it partially shares hardware and software resources such as channels, antennas, and processing. The integrated communication and perception system combines the two functions of communication and perception, which can effectively utilize limited spectrum resources and quickly share information. It is expected to form a synergistic gain of communication and perception, use the same signal on the same platform, realize radar and communication functions at the same time, and improve the comprehensiveness of the system.

[0004] The design of the synaesthesia integration frame structure is one of the key contents of the implementation of the synaesthesia integration physical layer technology standardization. The frame structure design of the synaesthesia integration system needs to comprehensively consider the working frequency band characteristics, synaesthesia performance requirements and other issues. The higher the working frequency band, the larger the available bandwidth, so that each frame can contain more time slots, which is more conducive to achieving large bandwidth, low latency transmission and high-precision angle, distance, and speed perception. Therefore, in order to achieve seamless synaesthesia integration endogenous perception function, it is necessary to design corresponding synaesthesia integration signal processing methods according to different frame structures.

[0005] At present, with the advent of the 5G era, 5G base stations have been widely deployed all over the world. Using existing 5G base station hardware to achieve synaesthesia integration has the advantages of low cost and rapid deployment. Therefore, how to use existing 5G base station hardware to achieve synaesthesia integration is an important research topic. Existing methods optimize the synaesthesia integration waveform by filling the empty subcarriers of 5G base stations working in downlink mode and optimizing the transmission power of communication subcarriers. On the other hand, in order to achieve good perception performance in the presence of clutter, it is necessary to obtain environmental prior information to suppress clutter. If the clutter component of the measured signal is different from the statistical structure of the training data, the performance of clutter suppression will be reduced. At present, there is a method of using compressed sensing methods to estimate clutter spatial parameters and Doppler shift to improve perception performance.

[0006] The disadvantages of the prior art are as follows:

[0007] (1) The method of optimizing the synaesthesia integration waveform for the downlink mode. The communication waveform is essentially random. The number of empty subcarriers in the communication depends on the number of users served by the network. The data transmitted by users is bursty and discontinuous. Therefore, it is difficult to guarantee the frequency of synaesthesia integration, which may lead to irregular perception performance.

[0008] (2) The existing clutter suppression capability is insufficient. Due to the continuous and rapid changes in environmental parameters in the spatial and Doppler domains, the computational cost of compressed sensing-based methods may be very high. If multiple distributed nodes are involved in the perception, it will not be able to meet the perception requirements. Summary of the invention

[0009] In view of the above technical problems existing in the prior art, the present invention proposes a device and method for designing a composite frame structure of a synaesthesia integrated signal, which has a reasonable design, overcomes the shortcomings of the prior art, and has good effects.

[0010] In order to achieve the above object, the present invention adopts the following technical solution:

[0011] A synaesthesia integrated signal composite frame structure design device comprises a resource block, which is a basic unit of information transmission.

[0012] Preferably, the resource block includes a time slot and a subcarrier; wherein the subcarrier divides the spectrum into multiple parts by using an orthogonal frequency division multiplexing technique; and the time slot divides the time domain into several intervals.

[0013] Preferably, a time slot is a basic unit for allocating time, which divides the available time into intervals of fixed length, allowing different users or data streams to transmit alternately on the same frequency resource; time slots include uplink time slots and downlink time slots, which are time slots, respectively representing specific sections in time, and are used for data transmission in different directions to meet the needs of two-way communication;

[0014] The uplink time slot refers to the time period when the user equipment sends data to the base station. During this time slot, the user can upload information. The uplink time slot can ensure that multiple users can send data at the same time without conflict.

[0015] The downlink time slot is when the base station sends data to the user equipment and the base station can send signaling; the downlink time slot can ensure that all users can receive information smoothly.

[0016] Preferably, data is transmitted in frames on the communication network. The protocol stipulates that each frame is divided into 10 subframes of equal time length, and each subframe is 1 millisecond long; each subframe is divided into several time slots, and the length of each time slot is determined by the parameter set. Each time slot includes 14 OFDM symbols.

[0017] Preferably, each OFDM symbol consists of two parts: a communication part and a perception part; wherein the communication part is used to send a perception signal, and the perception part is used to receive a perception echo signal.

[0018] Preferably, the communication part includes a radio frequency unit, and the sensing part includes an active antenna unit and a receiving unit.

[0019] In addition, the present invention also provides a method for designing a composite frame structure of a synaesthesia integrated signal. The method adopts the above-mentioned device for designing a composite frame structure of a synaesthesia integrated signal, and specifically comprises the following steps:

[0020] Step 1: Add the perception signal to the communication frame structure to achieve time-division multiplexing communication and perception integration;

[0021] Step 2: Adjust the ratio of communication and perception signals in the frame structure to achieve flexible regulation of communication and perception functions;

[0022] Step 3: Allocate resources flexibly according to the needs of perception and communication services, realize the dual functions of communication and perception without changing the existing communication protocol framework, and organize resource blocks into a frame structure;

[0023] Step 4: insert the sensing structure into the downlink time slot of the time slot to realize the sensing function of the user receiving signal stage;

[0024] Step 5: Generate a specific sensing waveform through the radio frequency unit, receive and sample the sensing waveform signal through the active antenna unit, and extract the sensing echo data;

[0025] Step 6: Transmit the sensed echo data to the receiving unit for processing and analysis.

[0026] Beneficial technical effects brought by the present invention:

[0027] The present invention improves the perception capability and completes the integration of communication and perception by modifying the basic scheduling unit time slot; the properties of OFDM symbols are specified in the time slot format, and various types of communication scheduling can be realized by adopting different time slot combinations; by adding perception in the downlink time slot, the perception echo signal can be received, thereby satisfying the uplink and downlink communication and downlink perception capabilities between the communication device and the user end; the time-division synaesthesia fusion design scheme can avoid the interference of other signals on the perception signal, and can improve the perception capability under the premise of ensuring communication efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the relationship between frame structure, time slots, and resource blocks in 5G NR;

[0029] Figure 2 It is a schematic diagram of the frame structure of a mobile communication network;

[0030] Figure 3 A schematic diagram of a frame structure for inserting sensing into a downlink time slot to complete the sensing function.

[0031] Figure 4 The figure is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0033] The present invention provides a device and method for designing a composite frame structure of a synaesthesia integrated signal.

[0034] The integrated frame structure realizes the integration of time-division-based communication and perception by adding perception signals to the communication frame structure. The flexible regulation of communication and perception functions can be achieved by changing the ratio of communication and perception signals in the frame structure. Resources can be flexibly allocated according to the needs of perception and communication services, and the spectrum utilization efficiency can be improved. The dual functions of communication and perception can be realized without changing the existing communication protocol framework.

[0035] In the 5G NR system, communication information is mapped into resource blocks, which are the basic units of information transmission. Resource blocks consist of time slots and subcarriers, where subcarriers divide the spectrum into multiple parts through orthogonal frequency division multiplexing (OFDM) technology, with flexible configuration options to meet different application requirements. Time slots divide the time domain into several intervals, usually 1 millisecond or less in length. These resource blocks are organized in a frame structure, and each frame is 10 milliseconds long. This design enables the 5G NR system to efficiently schedule and allocate resources, ensure the flexibility and reliability of data transmission, and meet diverse communication needs. The flexibility and efficiency of the frame structure are particularly important in the 5G system, providing the basis for it to support ultra-high data speeds and low-latency services. The relationship between time slots and resource blocks in 5G NR is as follows Figure 1 shown.

[0036] In the communication network, data is transmitted in frames. The protocol stipulates that each frame is divided into 10 subframes of equal length, and each subframe is 1 millisecond long. Each subframe is divided into several time slots. The length of each time slot is determined by the parameter set, and each time slot contains 14 OFDM symbols. The frame structure of the mobile communication network is as follows: Figure 2 shown.

[0037] Time slots are the basic unit for allocating time and are very important in time division multiplexing. Time slots divide available time into intervals of fixed length, allowing different users or data streams to transmit alternately on the same frequency resource, thereby optimizing spectrum usage and avoiding signal interference. To ensure accurate data transmission, the sender and receiver need to be synchronized at the beginning and end of the time slot. Uplink time slots and downlink time slots are specific applications of time slots, representing specific segments in time, which are used for data transmission in different directions to meet the needs of two-way communication. Uplink time slots refer to the time period when the user equipment sends data to the base station. During this time slot, the user can upload information. Uplink time slots can ensure that multiple users send data at the same time without conflict. Downlink time slots are when the base station sends data to the user equipment, and the base station can send signaling. Downlink time slots can ensure that all users can receive information smoothly. The uplink time slot and downlink time slot structure flexibly support multiple users to use the network at the same time, while ensuring the efficiency and orderliness of data transmission. Therefore, inserting a perception structure into the downlink time slot can complete the perception function in the user's reception process, Figure 3 Shown is the frame structure for inserting sensing into the downlink time slot to complete the sensing function.

[0038] Specific perception waveforms are generated by the radio frequency unit, and these waveforms are transmitted through the active antenna unit to detect the surrounding environment. After the transmission is completed, the active antenna unit not only transmits these waveforms, but also receives and samples the recovered perception waveform signals to extract the perception echo data. The echo data is then transmitted to the receiving unit for further processing and analysis. In order to enhance the accuracy of target detection and parameter estimation, the receiving unit can accumulate and process the perception pulse echo signals within multiple wireless frame periods. Through this accumulation, the system can obtain clearer and more reliable signals, which helps to improve the overall detection performance and efficiency and adapt to the needs of complex wireless environments.

[0039] The present invention also provides a method for designing a composite frame structure of a synaesthesia integrated signal, the process of which is as follows: Figure 4 As shown, the specific steps include:

[0040] Step 1: Add the perception signal to the communication frame structure to achieve time-division multiplexing communication and perception integration;

[0041] Step 2: Adjust the ratio of communication and perception signals in the frame structure to achieve flexible regulation of communication and perception functions;

[0042] Step 3: Allocate resources flexibly according to the needs of perception and communication services, realize the dual functions of communication and perception without changing the existing communication protocol framework, and organize resource blocks into a frame structure;

[0043] Step 4: insert the sensing structure into the downlink time slot of the time slot to realize the sensing function of the user receiving signal stage;

[0044] Step 5: Generate a specific sensing waveform through the radio frequency unit, receive and sample the sensing waveform signal through the active antenna unit, and extract the sensing echo data;

[0045] Step 6: Transmit the sensed echo data to the receiving unit for processing and analysis.

[0046] The present invention is directed to a method for designing a synaesthesia fusion frame structure for a downlink time slot. By modifying the downlink time slot in the communication signal frame, a perception structure is added to the downlink time slot to achieve synaesthesia integration. The purpose of modifying the downlink time slot is to increase the perception performance and complete the perception capability during the user's signal reception stage. The scheme can be based on the existing 5G communication base station, and the frame structure can be designed and modified under the current hardware conditions to meet the test of the existing hardware foundation.

[0047] The present invention discloses a time-division synaesthesia fusion frame structure design method. For each OFDM symbol, it is composed of two parts: communication and perception. The communication part is used to send a perception signal, and the perception part is used to receive a perception echo signal. When the base station receives the echo signal, the signal interference in the echo process can be filtered out to improve the perception capability. This solution can avoid the interference of the perception signal on the basis of the existing communication efficiency and meet the improvement of the perception capability.

[0048] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A composite frame structure design device for synaesthesia integrated signal, characterized in that: It includes resource blocks, which are the basic units of information transmission.

2. The device for designing a composite frame structure of a synaesthesia integrated signal according to claim 1, characterized in that: A resource block includes time slots and subcarriers; the subcarriers divide the spectrum into multiple parts through orthogonal frequency division multiplexing technology; and the time slots divide the time domain into several intervals.

3. The synaesthesia integrated signal composite frame structure design device according to claim 2, characterized in that: A time slot is a basic unit for allocating time. It divides available time into intervals of fixed length, allowing different users or data streams to transmit alternately on the same frequency resource. Time slots include uplink time slots and downlink time slots, which represent specific segments in time and are used for data transmission in different directions to meet the needs of two-way communication. The uplink time slot refers to the time period when the user equipment sends data to the base station. During this time slot, the user can upload information. The uplink time slot can ensure that multiple users can send data at the same time without conflict. The downlink time slot is when the base station sends data to the user equipment and the base station can send signaling; the downlink time slot can ensure that all users can receive information smoothly.

4. The device for designing a composite frame structure of a synaesthesia integrated signal according to claim 3, characterized in that: Data is transmitted in frames on the communication network. The protocol stipulates that each frame is divided into 10 subframes of equal time length, and each subframe is 1 millisecond long; each subframe is divided into several time slots, and the length of each time slot is determined by the parameter set. Each time slot includes 14 OFDM symbols.

5. The device for designing a composite frame structure of a synaesthesia integrated signal according to claim 4, characterized in that: Each OFDM symbol consists of two parts: communication and perception. The communication part is used to send perception signals, and the perception part is used to receive perception echo signals.

6. The device for designing a composite frame structure of a synaesthesia integrated signal according to claim 5, characterized in that: The communication part includes a radio frequency unit, and the sensing part includes an active antenna unit and a receiving unit.

7. A method for designing a composite frame structure of a synaesthesia integrated signal, characterized in that: The device for designing a composite frame structure of a synaesthesia integrated signal as claimed in claim 5 specifically comprises the following steps: Step 1: Add the perception signal to the communication frame structure to achieve time-division multiplexing communication and perception integration; Step 2: Adjust the ratio of communication and perception signals in the frame structure to achieve flexible regulation of communication and perception functions; Step 3: Allocate resources flexibly according to the needs of perception and communication services, realize the dual functions of communication and perception without changing the existing communication protocol framework, and organize resource blocks into a frame structure; Step 4: insert the sensing structure into the downlink time slot of the time slot to realize the sensing function of the user receiving signal stage; Step 5: Generate a specific sensing waveform through the radio frequency unit, receive and sample the sensing waveform signal through the active antenna unit, and extract the sensing echo data; Step 6: Transmit the sensed echo data to the receiving unit for processing and analysis.

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