Radar communication integrated signal sending method, receiving method and equipment

Abstract

This application discloses a radar communication integrated signal transmission method, receiving method, and device, relating to the field of communications technology. The method comprises: determining the polarization state of a first signal based on the communication information bits to be transmitted; and transmitting the first signal based on the polarization state of the first signal; wherein the first signal is a radar signal. The solution of this application can address the problem that existing radar communication integrated signal transmission cannot balance radar detection performance and communication performance.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a radar communication integrated signal sending method, receiving method and device. Background Art

[0002] Communication and perception integration means realizing the integrated design of communication and perception functions through spectrum sharing and hardware sharing in the same system. While transmitting information, the system can perceive information such as direction, distance, and speed, and detect, track, and identify target devices or events. The communication system and the perception system complement each other to achieve overall performance improvement and bring a better service experience.

[0003] Currently, there has been considerable research on the integrated design of radar and communication systems. Typical joint designs include spectrum coexistence, where the two systems operate independently, allowing information exchange to reduce mutual interference; receiving-end sharing, where the two systems transmit their own signal waveforms, each requiring orthogonality to ensure that the waveforms do not affect their respective receiver detection; transmitting-end sharing, where the transmitter transmits a combined radar and communication waveform; and transmitting-receiving-end sharing, where the two systems share resources on both the transmitting and receiving sides, also requiring the use of a combined waveform or waveforms with an orthogonal relationship. Waveform design is a key component of radar and communication integrated design. The key to integrated waveform design is to minimize interference between communication and sensing signals, meet the requirements of communication and sensing functions, and improve spectrum efficiency while ensuring system performance.

[0004] However, for the current main radar communication integrated waveform design, the use of a joint waveform often requires complex design and optimization, and a compromise needs to be made between radar detection performance and communication performance. For example, in order to ensure the radar detection function, the spectrum efficiency and demodulation performance of the communication system may be reduced, and the modulation of the communication information will affect the ambiguity function of the radar waveform, thereby reducing the radar signal detection performance. Summary of the Invention

[0005] The embodiments of the present application provide a radar communication integrated signal sending method, receiving method and device, which can solve the problem that the existing radar communication integrated signal transmission cannot take into account both radar detection performance and communication performance.

[0006] In a first aspect, an embodiment of the present application provides a radar communication integrated signal transmission method, which is executed by a first communication device and includes:

[0007] determining a polarization state of the first signal according to the communication information bits to be sent;

[0008] sending the first signal according to the polarization state of the first signal;

[0009] The first signal is a radar signal.

[0010] In a second aspect, an embodiment of the present application provides a radar communication integrated signal receiving method, which is executed by a second communication device and includes:

[0011] receiving a first signal sent by a first communication device;

[0012] The first signal is a radar signal, and the polarization state of the first signal is determined by the first communication device according to the communication information bits to be sent.

[0013] In a third aspect, an embodiment of the present application provides a communication device, including:

[0014] A first determining module, configured to determine a polarization state of a first signal according to communication information bits to be sent;

[0015] a sending module, configured to send the first signal according to the polarization state of the first signal;

[0016] The first signal is a radar signal.

[0017] In a fourth aspect, an embodiment of the present application provides a communication device, including:

[0018] A receiving module, configured to receive a first signal sent by a first communication device;

[0019] The first signal is a radar signal, and the polarization state of the first signal is determined by the first communication device according to the communication information bits to be sent.

[0020] In the fifth aspect, an embodiment of the present application also provides an electronic device, which includes a processor, a memory, and a program or instruction stored in the memory and runnable on the processor, and when the program or instruction is executed by the processor, implements the method described in the first aspect, or the steps of the method described in the second aspect.

[0021] In a sixth aspect, an embodiment of the present application further provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the method described in the first aspect or the steps of the method described in the second aspect are implemented.

[0022] In the seventh aspect, an embodiment of the present application provides a chip, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the method as described in the first aspect, or the method as described in the second aspect.

[0023] In an eighth aspect, an embodiment of the present application provides a program product, which is stored in a non-volatile storage medium and is executed by at least one processor to implement the method described in the first aspect, or the steps of the method described in the second aspect.

[0024] In this way, in an embodiment of the present application, by determining the polarization state of the first signal based on the communication information bits to be sent, and then further sending the first signal based on the determined polarization state of the first signal, the integrated sending of radar communication signals is achieved, and communication information can be transmitted while performing radar detection on the target, which helps to balance radar detection performance and communication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A structural diagram of a wireless communication system;

[0026] Figure 2 This is one of the flow charts of the radar communication integrated signal sending method according to an embodiment of the present application;

[0027] Figure 3 This is a second flow chart of the radar communication integrated signal sending method according to an embodiment of the present application;

[0028] Figure 4 Schematic diagram of radar signal processing;

[0029] Figure 5 Schematic diagram of polarization modulation scheme for pulse radar signals;

[0030] Figure 6 Schematic diagram of polarization modulation scheme for FMCW radar signals;

[0031] Figure 7 This is a schematic diagram of integrated signal transmission and reception for radar communication;

[0032] Figure 8 A schematic flow chart of a radar communication integrated signal receiving method according to an embodiment of the present application;

[0033] Figure 9 A structural diagram of a communication device according to an embodiment of the present application;

[0034] Figure 10 A structural diagram of a communication device according to another embodiment of the present application;

[0035] Figure 11 This is a structural diagram of a communication device according to another embodiment of the present application;

[0036] Figure 12 This is a structural diagram of a terminal according to an embodiment of the present application;

[0037] Figure 13This is a structural diagram of the network side device of an embodiment of the present application. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0039] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects and are not used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments of this application can be implemented in an order other than those illustrated or described herein. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0040] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. However, the following description describes a New Radio (NR) system for illustrative purposes, and the NR terminology is used in most of the following description, although these technologies can also be applied to applications other than NR system applications, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0041] Figure 1The following is a structural diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as a terminal device or a user terminal (UE). The terminal 11 can be a mobile phone, a tablet personal computer (TPC), a laptop computer (LC), or a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), a wearable device (WearableDevice) or a vehicle-mounted device (VUE), a pedestrian terminal (PUE) and other terminal-side devices. Wearable devices include: bracelets, headphones, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 can be a base station or a core network, where the base station can be called a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a transmitting and receiving point (Transmitting Receiving Point, TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

[0042] The radar communication integrated signal sending method provided in the embodiment of the present application is described in detail below with reference to specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0043] The method of the embodiment of the present application is applied to a communication device, which may be a user device, which may refer to an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a PDA, a handheld device with wireless communication capabilities, a computing device, or other processing device connected to a wireless modem, a vehicle-mounted device, or a wearable device. The communication device may also be a network-side device, such as a base station or a core network.

[0044] like Figure 2 As shown, the radar communication integrated signal sending method of the embodiment of the present application is executed by the first communication device, including:

[0045] Step 201: Determine the polarization state of a first signal according to communication information bits to be sent.

[0046] Here, the communication information bits to be sent are obtained from the communication information to be sent, for example, the communication information bits to be sent are 0 or 1, or the communication information bits to be sent are 00, 01, 10 or 11, and so on.

[0047] In this step, the first communication device determines the polarization state of the first signal according to the communication information bits to be sent, thereby executing the next step.

[0048] Step 202: Send the first signal according to the polarization state of the first signal; wherein the first signal is a radar signal.

[0049] In this step, the first signal is transmitted based on the polarization state of the first signal determined in step 201. Because the first signal is a radar signal and its polarization state is determined based on the communication information bits to be transmitted, the communication information can be carried on the polarization state of the radar signal, enabling simultaneous transmission of the communication information while performing radar detection on the target.

[0050] Thus, the method of the embodiment of the present application achieves integrated transmission of radar communication signals by determining the polarization state of the first signal based on the communication information bits to be transmitted, and then further transmitting the first signal based on the determined polarization state of the first signal. This allows for simultaneous transmission of communication information while performing radar detection of a target. Furthermore, radar detection typically occurs in a line-of-sight (LoS) scenario, where the channel depolarization effect is minimal, facilitating polarization demodulation at the receiving end.

[0051] Optionally, in this embodiment, step 201 includes:

[0052] Based on the association between the communication information bits to be sent and the polarization states, the polarization state of the first signal is determined.

[0053] Here, an association relationship between the communication information bit and the polarization state is preset, so as to determine the polarization state of the corresponding radar signal through the association relationship for the communication information bit to be sent.

[0054] For polarization modulation of radar signals, the polarization modulation order is associated with the number of information bits carried by a single polarization modulation symbol. A higher polarization modulation order corresponds to a greater number of information bits carried by a single polarization modulation symbol. Therefore, to accommodate different polarization modulation orders, different associations between communication information bits and polarization states are pre-set.

[0055] Thus, optionally, in this embodiment, corresponding to different polarization modulation orders, the association relationship between the communication information bits to be sent and the polarization state is different, and the polarization modulation order is associated with the number of information bits carried by a single polarization modulation symbol;

[0056] Correspondingly, such as Figure 3 As shown, before determining the polarization state of the first signal based on the association between the communication information bits to be sent and the polarization state, the method further includes:

[0057] Step 301: Receive a second signal, where the second signal is a radar echo signal.

[0058] Here, the radar echo signal is the first signal, that is, the signal returned by the radar signal after detecting the target.

[0059] Step 302: Perform detection based on the second signal to obtain a detection result.

[0060] In this step, detection is performed based on the second signal received in step 301 to generate a detection result. The detection is performed based on pre-set radar detection parameters. Optionally, the radar detection parameters include, but are not limited to, range, Doppler, angle, resolution, coverage, and detection probability. The radar detection parameters can be adjusted based on the current scenario.

[0061] Step 303: Determine the current polar modulation order according to the detection result.

[0062] In this step, after the detection result is obtained in step 302, the currently applicable polarization modulation order is further determined based on the detection result. For example, the polarization modulation order is determined based on parameters such as distance and Doppler.

[0063] Step 304: Determine the association between the communication information bits to be sent and the polarization state according to the current polarization modulation order.

[0064] From the above content, it is known that the association relationship between communication information bits corresponding to different polarization modulation orders and polarization states is pre-set. Here, the current polarization modulation order is determined in step 303. Based on the current polarization modulation order, the association relationship between the communication information bits to be sent and the polarization state can be determined, so that the polarization state of the first signal can be more accurately determined based on the association relationship.

[0065] Wherein, step 302 includes:

[0066] Polarization characteristic detection is performed according to the polarization state and the second signal to obtain a detection result.

[0067] That is, for scenarios with polarization characteristic detection requirements, the radar detection parameters include parameters related to the polarization characteristics. The polarization characteristic detection will be performed in combination with the polarization state and the second signal to obtain the required detection results. Of course, the detection results can indicate the current polarization characteristics.

[0068] It should be noted that, in the first communication device, the detection based on the second signal is performed in the radar signal processing unit, so if polarization characteristic detection is to be performed, the radar signal processing unit will also know the current polarization state.

[0069] Optionally, step 202 includes:

[0070] The first signal is sent through an antenna corresponding to the polarization state.

[0071] Here, the antenna is a polarized antenna of the first communication device. Therefore, the radar signal is sent through different orthogonal polarized antennas according to the communication information bits to achieve modulation, such as BPSK modulation.

[0072] Optionally, the sending the first signal through the antenna corresponding to the polarization state includes at least one of the following methods:

[0073] sending the first signal through a first antenna;

[0074] transmitting the first signal via a second antenna;

[0075] transmitting the first signal through a first antenna and a second antenna;

[0076] The first antenna and the second antenna do not transmit the first signal;

[0077] The polarization state corresponding to the first antenna and the polarization state corresponding to the second antenna are orthogonal.

[0078] Optionally, the first antenna is a horizontally polarized antenna, and the second antenna is a vertically polarized antenna; or, the first antenna is a left-handed circularly polarized antenna, and the second antenna is a right-handed circularly polarized antenna.

[0079] For example, the transmitting antenna array of the first communication device includes at least one pair of dual-polarized antennas. If the dual-polarized antennas are a left-hand circularly polarized antenna and a right-hand circularly polarized antenna, when the communication information bit is 0, the radar signal is transmitted via the left-hand circularly polarized antenna; when the communication information bit is 1, the radar signal is transmitted via the right-hand circularly polarized antenna. Alternatively, when the communication information bit is 00, the radar signal is transmitted via the left-hand circularly polarized antenna; when the communication information bit is 01, the radar signal is transmitted via the right-hand circularly polarized antenna; when the communication information bit is 10, no radar signal is transmitted; and when the communication information bit is 11, the radar signal is transmitted simultaneously via the right-hand circularly polarized antenna and the left-hand circularly polarized antenna.

[0080] If the dual-polarized antenna is a horizontally polarized antenna and a vertically polarized antenna, when the communication information bit is 0, the radar signal is transmitted through the horizontally polarized antenna, and when the communication information bit is 1, the radar signal is transmitted through the vertically polarized antenna. Alternatively, when the communication information bit is 00, the radar signal is transmitted through the horizontally polarized antenna; when the communication information bit is 01, the radar signal is transmitted through the vertically polarized antenna; when the communication information bit is 10, no radar signal is transmitted; and when the communication information bit is 11, the radar signal is transmitted through both the horizontally polarized antenna and the vertically polarized antenna.

[0081] In addition, in this embodiment, optionally, the probability of sending the 00 bit can be reduced through some encoding methods to reduce the impact on radar performance.

[0082] Additionally, optionally, the sending the first signal according to the polarization state of the first signal includes:

[0083] determining an amplitude ratio and a phase difference corresponding to the polarization state;

[0084] Splitting the first signal into two signal components through a power splitting network according to the determined amplitude ratio;

[0085] According to the determined phase difference, the phases of the two signal components are set through a phase shift network.

[0086] Here, the power division network and the phase shift network are used to control the polarization state of the radar signal to send the first signal, that is, according to the communication information bit, the power division network and the phase shift network are used to change the polarization phase descriptor (amplitude δ and phase ) controls the polarization state of the radar signal, achieving polarization modulation. Each polarization state corresponds to a point in the constellation diagram. Based on the relationship between the Jones vector and the Poincare sphere, the constellation diagram can be represented on the Poincare sphere.

[0087] Among them, the amplitude ratio and phase difference corresponding to each polarization state can also be pre-set. After determining the polarization state of the first signal, the corresponding amplitude ratio and phase difference can be determined. Then, after using the power division network and the phase shift network to control the polarization state of the first signal, the first signal is sent through at least a pair of dual-polarized antennas included in the first communication device.

[0088] like Figure 4 As shown, the transfer function of the power splitter network is expressed as By changing the amplitude ratio control parameter δ i The radar signal S can be controlled i The amplitude ratio of the two signal components; the phase shift network transfer function is expressed as By changing the phase difference control parameters The radar signal S can be controlled i The phase difference between the two signal components. In this way, the radar signal (first signal) S t , after the power splitter network, it becomes the first signal component S i sinδ i and the second signal component S i cosδ i The first signal component after the phase shift network is The first polarization antenna of the dual polarization antenna is sent, and the second signal component is S i cosδ i , transmitted through the second polarized antenna of the dual-polarized antenna. Here, the first polarized antenna can be one or more antennas, and the second polarized antenna can also be one or more antennas.

[0089] Optionally, in this embodiment, step 202 includes:

[0090] sending the first signal based on a first time unit;

[0091] The first time unit is the minimum duration for the first communication device to perform polarization modulation on the first signal.

[0092] Correspondingly, the second communication device, acting as the receiving end of the first communication device, receives the first signal based on the first time unit. The second communication device can detect the information sent by the transmitting end only after determining the first time unit. The first time unit is also the minimum time unit for the second communication device to detect polarization information. For example, the first time unit is 1 ms, or one time slot.

[0093] Optionally, the first time unit is predefined.

[0094] If the protocol defines the first time unit, the second communication device determining the first time unit may be obtaining a predefined first time unit.

[0095] Considering that the second communication device cannot obtain the predefined first time unit, or the first time unit is not predefined, optionally, in this embodiment, the method further includes:

[0096] A notification message is sent, where the notification message is used to indicate the first time unit.

[0097] In this way, the second communication device can receive the notification message and determine the first time unit.

[0098] Of course, the second communication device will also determine the first time unit through blind detection. Specifically, if there are multiple first time units predefined or indicated by the notification message, such as the first time unit is 1ms or 2ms, the second communication device determines through blind detection that the first time unit is 1ms or 2ms.

[0099] Optionally, the sending the first signal based on the first time unit includes:

[0100] Repeatedly transmitting the first signal with the first time unit as a basic unit; or,

[0101] After adjusting the first time unit to a second time unit according to the adjustment parameter, the first signal is sent within the second time unit.

[0102] If the first communication device repeatedly transmits the first signal using a first time unit as a basic unit, the first communication device will also notify the second communication device of the number of repetitions N, where N is a natural number greater than or equal to 1. The second communication device determines the first time unit and N, and then detects the information sent by the first communication device.

[0103] The adjustment parameter may be predefined. However, considering the applicability of the scenario, the adjustment parameter is optionally determined by a detection result obtained by detecting the radar echo signal.

[0104] Since the first communication device can adjust the first time unit according to the detection result obtained by detecting the radar echo signal, the adjusted second time unit is more applicable to the scene.

[0105] Likewise, N may be predefined or dynamically adjustable according to a detection result obtained by detecting the radar echo signal.

[0106] For example, the longer the distance, the longer the first time unit, or the larger N, the easier it is for the second communication device to first accumulate and combine signals and then perform polarization state detection, thereby obtaining diversity / combining gain and improving the detection signal-to-noise ratio.

[0107] For example, radar signals are pulse radar signals. Pulse radar signals can radiate short high-frequency pulses, and then the antenna is connected to the receiver to receive the signal. The transmitted and received signals are separated in time. Its polarization modulation scheme is as follows: Figure 5 As shown. Among them, the pulse repetition interval (PRI) can be used to represent the speed of radar pulse transmission, and Tmin is the minimum time interval (first time unit) in the polarization modulation scheme. When transmitting integrated radar communication signals based on pulse signals, there is at least one radar pulse signal within each Tmin. As mentioned above, in order to improve the detection signal-to-noise ratio, Tmin can be increased, that is, the communication information transmission rate can be reduced so that there are at least multiple radar pulse signals within each Tmin; or the communication information can be repeatedly transmitted according to Tmin, that is, multiple consecutive Tmin correspond to the same polarization state, that is, the same communication information bit.

[0108] Alternatively, the radar signal is a continuous wave radar signal, which can be a single frequency continuous wave (CW) or a frequency modulated continuous wave (FMCW). Taking FMCW as an example, its polarization modulation scheme is as follows: Figure 6 As shown, T is the FMCW frequency sweep period, and Tmin is the minimum time interval (first time unit) in the polarization modulation scheme. Preferably, the polarization state is switched at the beginning or end of each FMCW frequency sweep period, that is, the polarization state is kept unchanged in each FMCW frequency sweep period, corresponding to the same communication information bit. As mentioned above, in order to improve the detection signal-to-noise ratio, Tmin can be increased, that is, the communication information transmission rate is reduced, so that each Tmin includes at least multiple frequency sweep periods T; or the communication information is repeatedly sent according to Tmin, that is, multiple consecutive Tmin correspond to the same polarization state, that is, the same communication information bit. Optionally, when the FMCW frequency sweep period is constant, in order to further improve the communication rate, Tmin is reduced so that the radar signal within one frequency sweep period T corresponds to multiple polarization states, that is, different communication information bits.

[0109] It should be noted that, in this embodiment, the first communication device may serve as a transmitter of the first signal, and may also serve as a receiver of the first signal sent by the third communication device, which will not be described in detail here.

[0110] Below, as Figure 7 As shown, the transmission and reception of the first signal are explained in combination with the structure of the first communication device that executes the radar communication integrated signal sending method of the embodiment of the present application.

[0111] The baseband processing section is divided into a radar baseband processing unit and a communication baseband processing unit. The radar baseband processing unit is responsible for generating radar signals, which can be pulse signals or continuous wave signals; the communication baseband processing unit is responsible for generating communication information (communication source information) to obtain communication information bits. Optionally, the communication baseband processing unit can also perform scrambling and encoding.

[0112] The polarization state processing unit is responsible for determining the polarization state according to the communication information bits.

[0113] The transmitting front end and transmitting antenna array are shared by the communication system and the radar system. They are responsible for the digital-to-analog conversion and frequency up-conversion of the radar signal, polarization modulation of the radar signal based on the communication information bits, and transmission of the joint signal. The transmitting antenna array includes at least one pair of dual-polarized antennas, which can be a left-hand circularly polarized antenna and a right-hand circularly polarized antenna, or a horizontally polarized antenna and a vertically polarized antenna.

[0114] The receiving front end and receiving antenna array are shared by the communication system and the radar system, and are responsible for the down-conversion, analog-to-digital conversion, and amplitude and phase calibration of radar signals and / or communication signals. The receiving antenna array includes at least one pair of dual-polarized antennas, which can be, for example, a left-hand circularly polarized antenna and a right-hand circularly polarized antenna, or a horizontally polarized antenna and a vertically polarized antenna.

[0115] The radar signal processing unit is responsible for analyzing and detecting the radar echo signal to obtain the corresponding radar detection parameters, such as distance, Doppler, angle, resolution, coverage, detection probability, etc., and / or performing polarization characteristic analysis on the radar echo signal based on the transmitting end communication information bits.

[0116] The communication signal processing unit is responsible for decoding and judging the communication signal and performing polarization demodulation on the communication signal.

[0117] In summary, the method of the embodiment of the present application determines the polarization state of the first signal according to the communication information bit to be sent, and then further sends the first signal according to the determined polarization state of the first signal, thereby realizing the integrated transmission of radar communication signals. Communication information can be transmitted while performing radar detection on the target, and radar detection is usually a line-of-sight (LoS) scenario, and the channel depolarization effect is relatively light, which is conducive to polarization demodulation at the receiving end.

[0118] like Figure 8 As shown, a radar communication integrated signal receiving method according to an embodiment of the present application is executed by a second communication device, including:

[0119] Step 801: receiving a first signal sent by a first communication device;

[0120] The first signal is a radar signal, and the polarization state of the first signal is determined by the first communication device according to the communication information bits to be sent.

[0121] By receiving the first signal, since the first signal is a radar signal and the polarization state of the first signal is determined by the first communication device based on the communication information bits to be sent, the integrated transmission of the radar communication signal is completed. Communication information can be transmitted while radar detection of the target is being performed. In addition, radar detection is usually a line-of-sight (LoS) scenario, and the channel depolarization effect is relatively light, which is conducive to polarization demodulation at the receiving end.

[0122] Optionally, before step 801, the method further includes:

[0123] determining a first time unit;

[0124] The receiving a first signal sent by a first communication device includes:

[0125] receiving the first signal based on the first time unit;

[0126] The first time unit is the minimum duration for the first communication device to perform polarization modulation on the first signal.

[0127] Optionally, determining the first time unit includes at least one of the following methods:

[0128] receiving a notification message sent by the first communication device, where the notification message is used to indicate the first time unit;

[0129] Obtaining the predefined first time unit;

[0130] The first time unit is determined by blind detection.

[0131] Optionally, after receiving the first signal sent by the first communication device, the method further includes:

[0132] Polarization demodulation is performed on the first signal.

[0133] Specifically, for sending the first signal through the antenna corresponding to the polarization state, the second communication device can adopt non-coherent demodulation and directly measure the receiving power of different orthogonal polarization antennas. For example, if a left-hand circularly polarized antenna and a right-hand circularly polarized antenna are used, when the receiving power of the left-hand circularly polarized antenna of the second communication device is larger, it is considered that the communication information bit sent by the transmitting end is 0, and when the receiving power of the right-hand circularly polarized antenna of the second communication device is larger, it is considered that the communication information bit sent by the transmitting end is 1; if a horizontal and vertical polarized antenna is used, when the receiving power of the horizontal polarized antenna of the second communication device is larger, it is considered that the communication information bit sent by the transmitting end is 0, and when the receiving power of the vertical polarized antenna of the second communication device is larger, it is considered that the communication information bit sent by the transmitting end is 1. Or for example, if a left-hand circularly polarized antenna and a right-hand circularly polarized antenna are used, when the receiving power of the left-hand circularly polarized antenna of the second communication device is larger, it is considered that the communication information bit sent by the transmitting end is 00, and when the receiving power of the right-hand circularly polarized antenna of the second communication device is larger, it is considered that the communication information bit sent by the transmitting end is 01. When the receiving power of both the left-hand and right-hand circularly polarized antennas is lower, for example, lower than a certain threshold, it is considered that the communication information bit sent by the transmitting end is 10. When the receiving power of both the left-hand and right-hand circularly polarized antennas is higher, for example, higher than a certain threshold, it is considered that the communication information bit sent by the transmitting end is 01. The communication information bit is 11; if a horizontal and vertical polarized antenna is used, when the receiving power of the horizontal polarized antenna of the second communication device is larger, the communication information bit sent by the transmitting end is considered to be 00; when the receiving power of the vertical polarized antenna of the second communication device is larger, the communication information bit sent by the transmitting end is considered to be 01; when the receiving powers of the horizontal and vertical polarized antennas are both low, for example, lower than a certain threshold, the communication information bit sent by the transmitting end is considered to be 10; when the receiving powers of the horizontal and vertical antennas are both high, for example, higher than a certain threshold, the communication information bit sent by the transmitting end is considered to be 11. When using a power splitter network and a phase shift network to control the polarization state of the radar signal to send the first signal, the second communication device can adopt the Stokes parameter extraction method to obtain the Stokes vector of the radar signal. The first communication device controls the polarization phase descriptor of the radar signal, that is, controls the Jones vector of the radar signal to obtain different polarization states corresponding to different constellation points in MQAM modulation. After the second communication device obtains the Stokes vector of the radar signal, the polarization state of the radar signal transmitted by the transmitting end can be determined based on the one-to-one mapping relationship between the Stokes vector and the Jones vector, thereby completing polarization demodulation.

[0134] In this embodiment, the second communication device may serve as a receiving end of the first signal, and may also serve as a sending end of the first signal received by the fourth communication device, which will not be described in detail here.

[0135] It should be noted that this method is implemented in conjunction with the above-mentioned radar communication integrated signal sending method. The implementation method of the embodiment of the above-mentioned radar communication integrated signal sending method is applicable to this method and can also achieve the same technical effect.

[0136] It should be noted that the method provided in the embodiments of the present application can be performed by a device or a control module in the device for performing the loading method. In the embodiments of the present application, the method for performing loading by a device is used as an example to illustrate the radar communication integrated signal sending method or receiving method provided in the embodiments of the present application.

[0137] like Figure 9 As shown, a communication device according to an embodiment of the present application includes:

[0138] A first determination module 910 is configured to determine a polarization state of a first signal based on communication information bits to be sent;

[0139] a sending module 920, configured to send the first signal according to the polarization state of the first signal;

[0140] The first signal is a radar signal.

[0141] Optionally, the first determining module is further configured to:

[0142] Based on the association between the communication information bits to be sent and the polarization states, the polarization state of the first signal is determined.

[0143] Optionally, corresponding to different polarization modulation orders, the association relationship between the communication information bits to be sent and the polarization state is different, and the polarization modulation order is associated with the number of information bits carried by a single polarization modulation symbol;

[0144] The device further comprises:

[0145] A receiving module, configured to receive a second signal, where the second signal is a radar echo signal;

[0146] a detection module, configured to perform detection according to the second signal and obtain a detection result;

[0147] A first processing module, configured to determine a current polar modulation order according to the detection result;

[0148] The second processing module is used to determine the association relationship between the communication information bit and the polarization state according to the current polarization modulation order.

[0149] Optionally, the detection module includes:

[0150] Polarization characteristic detection is performed according to the polarization state and the second signal to obtain a detection result.

[0151] Optionally, the sending module includes:

[0152] The first sending submodule is configured to send the first signal through an antenna corresponding to the polarization state.

[0153] Optionally, the first sending submodule sends the first signal in at least one of the following ways:

[0154] sending the first signal through a first antenna;

[0155] transmitting the first signal via a second antenna;

[0156] transmitting the first signal through a first antenna and a second antenna;

[0157] The first antenna and the second antenna do not transmit the first signal;

[0158] The polarization state corresponding to the first antenna and the polarization state corresponding to the second antenna are orthogonal.

[0159] Optionally, the first antenna is a horizontally polarized antenna, and the second antenna is a vertically polarized antenna; or, the first antenna is a left-handed circularly polarized antenna, and the second antenna is a right-handed circularly polarized antenna.

[0160] Optionally, the sending module includes:

[0161] a determination submodule, configured to determine an amplitude ratio and a phase difference corresponding to the polarization state;

[0162] a first processing submodule, configured to divide the first signal into two signal components through a power splitting network according to the determined amplitude ratio;

[0163] The second processing submodule is configured to set the phases of the two signal components through a phase shifting network according to the determined phase difference.

[0164] Optionally, the sending module is further configured to:

[0165] sending the first signal based on a first time unit;

[0166] The first time unit is the minimum duration for the first communication device to perform polarization modulation on the first signal.

[0167] Optionally, the first time unit is predefined.

[0168] Optionally, the device further includes:

[0169] The notification module is used to send a notification message, where the notification message is used to indicate the first time unit.

[0170] Optionally, the sending module is further configured to:

[0171] Repeatedly transmitting the first signal with the first time unit as a basic unit; or,

[0172] After adjusting the first time unit to a second time unit according to the adjustment parameter, the first signal is sent within the second time unit.

[0173] Optionally, the adjustment parameter is determined by a detection result obtained by detecting a radar echo signal.

[0174] The communication device determines the polarization state of the first signal based on the communication information bits to be sent, and then further sends the first signal based on the determined polarization state of the first signal, thereby achieving integrated transmission of radar communication signals. This allows for simultaneous transmission of communication information while performing radar detection of targets. Furthermore, radar detection is typically performed in a line-of-sight (LoS) scenario, where the channel depolarization effect is relatively mild, facilitating polarization demodulation at the receiving end.

[0175] The communication devices in the embodiments of the present application may also be terminals, such as mobile electronic devices, or non-mobile electronic devices. For example, the mobile electronic devices may be mobile phones, tablet computers, laptop computers, PDAs, in-vehicle electronic devices, wearable devices, UMPCs, netbooks, or PDAs, and the non-mobile electronic devices may be servers, network attached storage (NAS), personal computers (PCs), televisions (TVs), ATMs, or self-service machines, etc., which are not specifically limited in the embodiments of the present application. Of course, network-side devices may also be used.

[0176] The communication device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0177] The communication device provided in the embodiment of the present application can achieve Figures 2 to 7 To avoid repetition, the various processes implemented by the first communication device in the method embodiment are not described here.

[0178] like Figure 10 As shown, a communication device according to an embodiment of the present application includes:

[0179] The receiving module 1010 is configured to receive a first signal sent by a first communication device;

[0180] The first signal is a radar signal, and the polarization state of the first signal is determined by the first communication device according to the communication information bits to be sent.

[0181] Optionally, the device further includes:

[0182] A second determining module, configured to determine a first time unit;

[0183] The receiving module is further configured to:

[0184] receiving the first signal based on the first time unit;

[0185] The first time unit is the minimum duration for the first communication device to perform polarization modulation on the first signal.

[0186] Optionally, the second determining module determines the first time unit in at least one of the following ways:

[0187] receiving a notification message sent by the first communication device, where the notification message is used to indicate the first time unit;

[0188] Obtaining the predefined first time unit;

[0189] The first time unit is determined by blind detection.

[0190] Optionally, the device further includes:

[0191] A demodulation module is configured to perform polarization demodulation on the first signal.

[0192] The communication device receives a first signal. Because the first signal is a radar signal and the polarization state of the first signal is determined by the first communication device based on the communication information bits to be sent, the communication device completes the integrated transmission of the radar communication signal. The communication device can transmit communication information while performing radar detection on the target. In addition, radar detection is usually a line-of-sight (LoS) scenario, and the channel depolarization effect is relatively light, which is conducive to polarization demodulation at the receiving end.

[0193] The communication devices in the embodiments of the present application may be terminals, such as mobile electronic devices, or non-mobile electronic devices. For example, the mobile electronic devices may be mobile phones, tablet computers, laptop computers, PDAs, in-vehicle electronic devices, wearable devices, UMPCs, netbooks, or PDAs, and the non-mobile electronic devices may be servers, network attached storage (NAS), personal computers (PCs), televisions (TVs), ATMs, or self-service machines, etc., which are not specifically limited in the embodiments of the present application. Of course, network-side devices may also be used.

[0194] The communication device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0195] The communication device provided in the embodiment of the present application can achieve Figure 8 To avoid repetition, the various processes implemented by the second communication device in the method embodiment are not described here.

[0196] Optional, such as Figure 11 As shown, an embodiment of the present application further provides a communication device, including a processor 1101, a memory 1102, and a program or instruction stored in the memory 1102 and executable on the processor 1101. For example, when the communication device 1100 is a terminal, the program or instruction, when executed by the processor 1101, implements the various processes of the embodiment of the above-mentioned radar communication integrated signal transmission method or the radar communication integrated signal reception method, and can achieve the same technical effects. When the communication device 1100 is a first communication device, the program or instruction, when executed by the processor 1101, implements the various processes of the embodiment of the above-mentioned radar communication integrated signal transmission method, and can achieve the same technical effects. To avoid repetition, the details are not repeated here. When the communication device 1100 is a second communication device, the program or instruction, when executed by the processor 1101, implements the various processes of the embodiment of the above-mentioned radar communication integrated signal reception method, and can achieve the same technical effects. To avoid repetition, the details are not repeated here.

[0197] Figure 12 A schematic diagram of the hardware structure of a terminal serving as a communication device for implementing various embodiments of the present application.

[0198] The terminal 1200 includes but is not limited to components such as a radio frequency unit 1201 , a network module 1202 , an audio output unit 1203 , an input unit 1204 , a sensor 1205 , a display unit 1206 , a user input unit 1207 , an interface unit 1208 , a memory 1209 , and a processor 1210 .

[0199] Those skilled in the art will understand that the terminal 1200 may also include a power supply (such as a battery) to power each component, and the power supply may be logically connected to the processor 1210 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. Figure 12 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be repeated here.

[0200] It should be understood that in an embodiment of the present application, the input unit 1204 may include a graphics processing unit (GPU) 12041 and a microphone 12042, and the graphics processor 12041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1206 may include a display panel 12061, and the display panel 12061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1207 includes a touch panel 12071 and other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 may include two parts: a touch detection device and a touch controller. Other input devices 12072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0201] In this embodiment of the present application, RF unit 1201 receives downlink data from a network-side device and transmits it to processor 1210 for processing. Furthermore, RF unit 1201 transmits uplink data to the network-side device. Typically, RF unit 1201 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0202] The memory 1209 can be used to store software programs or instructions and various data. The memory 1209 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, at least one application program or instruction required for a function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1209 may include a high-speed random access memory and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. For example, at least one disk storage device, a flash memory device, or other non-volatile solid-state memory device.

[0203] Processor 1210 may include one or more processing units. Optionally, processor 1210 may integrate an application processor and a modem processor. The application processor primarily processes the operating system, user interface, and application programs or instructions, while the modem processor primarily processes wireless communications, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1210.

[0204] The processor 1210 is configured to determine a polarization state of a first signal based on communication information bits to be sent; and send the first signal based on the polarization state of the first signal; wherein the first signal is a radar signal.

[0205] The terminal realizes the integrated transmission of radar communication signals and can transmit communication information while performing radar detection on the target. Radar detection is usually a line-of-sight (LoS) scenario, and the channel depolarization effect is relatively mild, which is conducive to polarization demodulation at the receiving end.

[0206] Specifically, the embodiment of the present application also provides a network side device as a communication device. Figure 13 As shown, network device 1300 includes an antenna 1301, a radio frequency device 1302, and a baseband device 1303. Antenna 1301 is connected to radio frequency device 1302. In the uplink direction, radio frequency device 1302 receives information via antenna 1301 and sends the received information to baseband device 1303 for processing. In the downlink direction, baseband device 1303 processes the information to be transmitted and sends it to radio frequency device 1302. Radio frequency device 1302 processes the received information and then sends it through antenna 1301.

[0207] The frequency band processing device may be located in the baseband device 1303 . The method performed by the network-side device in the above embodiment may be implemented in the baseband device 1303 . The baseband device 1303 includes a processor 1304 and a memory 1305 .

[0208] The baseband device 1303 may include, for example, at least one baseband board on which a plurality of chips are arranged, such as Figure 13 As shown, one of the chips is, for example, a processor 1304, which is connected to a memory 1305 to call a program in the memory 1305 and execute the network device operations shown in the above method embodiment.

[0209] The baseband device 1303 may further include a network interface 1306 for exchanging information with the radio frequency device 1302 . The interface may be, for example, a common public radio interface (CPRI).

[0210] Specifically, the network side device of an embodiment of the present invention also includes: instructions or programs stored in the memory 1305 and executable on the processor 1304. The processor 1304 calls the instructions or programs in the memory 1305 to execute the method of executing each module and achieve the same technical effect. To avoid repetition, it will not be described here.

[0211] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned radar communication integrated signal sending method, or the radar communication integrated signal receiving method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, they will not be repeated here.

[0212] The processor is the processor in the communication device described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0213] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the above-mentioned radar communication integrated signal sending method, or the various processes of the radar communication integrated signal receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0214] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0215] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0216] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0217] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A radar communication integrated signal sending method, characterized in that: The method is executed by a first communication device and includes: determining a polarization state of the first signal according to the communication information bits to be sent; sending the first signal according to the polarization state of the first signal; Wherein, the first signal is a radar signal; The determining, based on the communication information bits to be sent, the polarization state of the first signal includes: Determining the polarization state of the first signal based on the association between the communication information bits to be sent and the polarization state; The association between the communication information bits to be sent and the polarization state is different for different polarization modulation orders, and the polarization modulation order is associated with the number of information bits carried by a single polarization modulation symbol; Before determining the polarization state of the first signal based on the association between the communication information bits to be sent and the polarization state, the method further includes: receiving a second signal, where the second signal is a radar echo signal; Performing detection according to the second signal to obtain a detection result; Determining a current polarization modulation order according to the detection result; Determine an association between the communication information bits to be sent and the polarization state according to the current polarization modulation order.

2. The method according to claim 1, characterized in that The performing detection according to the second signal to obtain a detection result includes: Polarization characteristic detection is performed according to the polarization state and the second signal to obtain a detection result.

3. The method according to claim 1, characterized in that The sending the first signal according to the polarization state of the first signal includes: The first signal is sent through an antenna corresponding to the polarization state.

4. The method according to claim 3, characterized in that The sending of the first signal through the antenna corresponding to the polarization state includes at least one of the following methods: sending the first signal through a first antenna; transmitting the first signal via a second antenna; transmitting the first signal through a first antenna and a second antenna; The first antenna and the second antenna do not transmit the first signal; The polarization state corresponding to the first antenna and the polarization state corresponding to the second antenna are orthogonal.

5. The method according to claim 4, characterized in that The first antenna is a horizontally polarized antenna, and the second antenna is a vertically polarized antenna; or the first antenna is a left-handed circularly polarized antenna, and the second antenna is a right-handed circularly polarized antenna.

6. The method according to claim 1, characterized in that The sending the first signal according to the polarization state of the first signal includes: determining an amplitude ratio and a phase difference corresponding to the polarization state; Splitting the first signal into two signal components through a power splitting network according to the determined amplitude ratio; According to the determined phase difference, the phases of the two signal components are set through a phase shift network.

7. The method according to claim 1, characterized in that The sending the first signal according to the polarization state of the first signal includes: sending the first signal based on a first time unit; The first time unit is the minimum duration for the first communication device to perform polarization modulation on the first signal.

8. The method according to claim 7, characterized in that The first time unit is predefined.

9. The method according to claim 7, characterized in that Also includes: A notification message is sent, where the notification message is used to indicate the first time unit.

10. The method according to claim 7, characterized in that The sending the first signal based on the first time unit includes: Repeatedly transmitting the first signal with the first time unit as a basic unit; or, After adjusting the first time unit to a second time unit according to the adjustment parameter, the first signal is sent within the second time unit.

11. The method according to claim 10, characterized in that The adjustment parameter is determined by a detection result obtained by detecting the radar echo signal.

12. A radar communication integrated signal receiving method, characterized in that: Executed by a second communication device, including: receiving a first signal sent by a first communication device; The first signal is a radar signal, and the polarization state of the first signal is determined by the first communication device according to an association between the communication information bits to be sent and the polarization state; The association between the communication information bits to be sent and the polarization state is different for different polarization modulation orders, and the polarization modulation order is associated with the number of information bits carried by a single polarization modulation symbol; In which, the association between the communication information bit to be sent and the polarization state is determined by the first communication device based on the current polarization modulation order, and the current polarization modulation order is determined by the first communication device based on the detection result of the second signal, and the second signal is a radar echo signal.

13. The method according to claim 12, characterized in that Before receiving the first signal sent by the first communication device, the method further includes: determining a first time unit; The receiving a first signal sent by a first communication device includes: receiving the first signal based on the first time unit; The first time unit is the minimum duration for the first communication device to perform polarization modulation on the first signal.

14. The method according to claim 13, characterized in that Determining the first time unit includes at least one of the following methods: receiving a notification message sent by the first communication device, where the notification message is used to indicate the first time unit; Obtaining the predefined first time unit; The first time unit is determined by blind detection.

15. The method according to claim 12, characterized in that After receiving the first signal sent by the first communication device, the method further includes: Polarization demodulation is performed on the first signal.

16. A communication device, characterized in that: include: A first determining module, configured to determine a polarization state of a first signal according to communication information bits to be sent; a sending module, configured to send the first signal according to the polarization state of the first signal; Wherein, the first signal is a radar signal; The first determining module is further configured to: Determining the polarization state of the first signal based on the association between the communication information bits to be sent and the polarization state; The association between the communication information bits to be sent and the polarization state is different for different polarization modulation orders, and the polarization modulation order is associated with the number of information bits carried by a single polarization modulation symbol; The device further comprises: A receiving module, configured to receive a second signal, where the second signal is a radar echo signal; a detection module, configured to perform detection according to the second signal and obtain a detection result; A first processing module, configured to determine a current polar modulation order according to the detection result; The second processing module is used to determine the association relationship between the communication information bit and the polarization state according to the current polarization modulation order.

17. The device according to claim 16, characterized in that The detection module includes: Polarization characteristic detection is performed according to the polarization state and the second signal to obtain a detection result.

18. The device according to claim 16, characterized in that The sending module includes: The first sending submodule is configured to send the first signal through an antenna corresponding to the polarization state.

19. The device according to claim 18, characterized in that The first sending submodule sends the first signal in at least one of the following ways: sending the first signal through a first antenna; transmitting the first signal via a second antenna; transmitting the first signal through a first antenna and a second antenna; The first antenna and the second antenna do not transmit the first signal; The polarization state corresponding to the first antenna and the polarization state corresponding to the second antenna are orthogonal.

20. The device according to claim 19, characterized in that The first antenna is a horizontally polarized antenna, and the second antenna is a vertically polarized antenna; or the first antenna is a left-handed circularly polarized antenna, and the second antenna is a right-handed circularly polarized antenna.

21. The apparatus according to claim 16, wherein The sending module includes: a determination submodule, configured to determine an amplitude ratio and a phase difference corresponding to the polarization state; a first processing submodule, configured to divide the first signal into two signal components through a power splitting network according to the determined amplitude ratio; The second processing submodule is configured to set the phases of the two signal components through a phase shifting network according to the determined phase difference.

22. The apparatus according to claim 16, wherein The sending module is further used for: sending the first signal based on a first time unit; The first time unit is the minimum duration for the first communication device to perform polarization modulation on the first signal.

23. The device according to claim 22, characterized in that The first time unit is predefined.

24. The device according to claim 22, characterized in that Also includes: The notification module is used to send a notification message, where the notification message is used to indicate the first time unit.

25. The apparatus according to claim 22, wherein The sending module is further used for: Repeatedly transmitting the first signal with the first time unit as a basic unit; or, After adjusting the first time unit to a second time unit according to the adjustment parameter, the first signal is sent within the second time unit.

26. The device according to claim 25, characterized in that The adjustment parameter is determined by a detection result obtained by detecting the radar echo signal.

27. A communication device, characterized in that: include: A receiving module, configured to receive a first signal sent by a first communication device; The first signal is a radar signal, and the polarization state of the first signal is determined by the first communication device according to an association between the communication information bits to be sent and the polarization state; The association between the communication information bits to be sent and the polarization state is different for different polarization modulation orders, and the polarization modulation order is associated with the number of information bits carried by a single polarization modulation symbol; In which, the association between the communication information bit to be sent and the polarization state is determined by the first communication device based on the current polarization modulation order, and the current polarization modulation order is determined by the first communication device based on the detection result of the second signal, and the second signal is a radar echo signal.

28. The device according to claim 27, characterized in that Also includes: A second determining module, configured to determine a first time unit; The receiving module is further configured to: receiving the first signal based on the first time unit; The first time unit is the minimum duration for the first communication device to perform polarization modulation on the first signal.

29. The device according to claim 28, characterized in that The second determining module determines the first time unit by at least one of the following methods: receiving a notification message sent by the first communication device, where the notification message is used to indicate the first time unit; Obtaining the predefined first time unit; The first time unit is determined by blind detection.

30. The apparatus according to claim 27, wherein Also includes: A demodulation module is configured to perform polarization demodulation on the first signal.

31. A communication device, characterized in that: The invention comprises a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the radar communication integrated signal sending method according to any one of claims 1 to 11, or the steps of the radar communication integrated signal receiving method according to any one of claims 12 to 15.

32. A readable storage medium, characterized in that The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, it implements the radar communication integrated signal sending method according to any one of claims 1 to 11, or the steps of the radar communication integrated signal receiving method according to any one of claims 12 to 15.

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