Beam Control Device and Communication and Sensing Integrated System

Abstract

The present invention relates to a beam control device and a communication and sensing integrated system. The device includes a plurality of first antenna port groups and at least one second antenna port group; a plurality of first beam channel groups and at least one second beam channel group, the first beam channel groups are connected to the first antenna port groups, and the second beam channel groups are connected to the second antenna port groups; a first signal terminal and a second signal terminal, the first signal terminal is used to connect to a first radio frequency terminal, and the second signal terminal is used to connect to a second radio frequency terminal; a switching switch configured to selectively: connect the first signal terminal to the plurality of first antenna port groups and connect the second signal terminal to the at least one second antenna port group; or, connect the first signal terminal to a part of the plurality of first antenna port groups and connect the second signal terminal to another part of the plurality of first antenna port groups. The present invention can support the sensing function of ISAC with low cost and high angular resolution on a communication system platform.

Description

Technical Field

[0001] The present invention relates to a beam control device and an integrated communication and sensing system. Background Art

[0002] The polarization direction of an antenna refers to the vibration direction of radio waves. Generally, an antenna includes two orthogonal polarization directions, such as horizontal polarization and vertical polarization, or 45° polarization and 135° polarization. Among them, horizontal polarization means that when a communication system or a sensing system transmits a signal, the vibration direction of its radio wave is the horizontal direction. Vertical polarization means that when a communication system or a sensing system transmits a signal, the vibration direction of its radio wave is the vertical direction. 45° polarization means that when a communication system or a sensing system transmits a signal, the vibration direction of its radio wave is the 45° direction. 135° polarization means that when a communication system or a sensing system transmits a signal, the vibration direction of its radio wave is the 135° direction. Since horizontal polarization and vertical polarization (or 45° polarization and 135° polarization) are 90° orthogonal and do not interfere with each other, for a communication system, different polarizations form independent wireless channels, and the system capacity is doubled. For the electromagnetic wave emitted by a sensing system, when it irradiates a target object, the characteristics of the target object itself will change the polarization state of the reflected electromagnetic wave, and this phenomenon is called the "polarization change effect". Measuring this change in polarization state can infer the physical properties of the target object, such as shape, structure, and material, etc., and can be applied to a meteorological radar for detecting clouds and rain.

[0003] However, for an integrated sensing and communication (ISAC) system for detecting aerial target objects, the transceiver systems with two polarization directions do not obtain the corresponding gain in the resolution of target object identification. If it is necessary to improve the resolution of target object identification, it is still necessary to increase the number of transmitting or receiving antennas, increasing the cost. Summary of the Invention

[0004] The object of the present invention is to provide a beam control device and an integrated communication and sensing system, which can support the sensing function of ISAC with low cost and high angular resolution on a communication system platform.

[0005] The present invention discloses a beam control device, comprising: a plurality of first antenna port groups and at least one second antenna port group, wherein the first antenna port groups are used to connect a first polarized antenna group, and the second antenna port groups are used to connect a second polarized antenna group, and each antenna group comprises one or more antennas with the same polarization direction; a plurality of first beam channel groups and at least one second beam channel group, wherein the first beam channel groups are connected to the first antenna port groups, and the second beam channel groups are connected to the second antenna port groups; a first signal terminal and a second signal terminal, wherein the first signal terminal is used to connect to a first radio frequency terminal, and the second signal terminal is used to connect to a second radio frequency terminal;

[0006] When the switching switch is configured to: select the first signal terminal to a plurality of the first antenna port groups and select the second signal terminal to at least one of the second antenna port groups, at this time, the first radio frequency terminal is selected to a plurality of the first polarized antenna groups, and the second radio frequency terminal is selected to at least one of the second polarized antenna groups. The first polarized antenna group can be used to transmit signals of the first polarization, and the second polarized antenna group can be used to transmit signals of the second polarization. That is to say, for communication signals from different first radio frequency terminals and second radio frequency terminals, each polarized antenna generates a polarized beam, so that the two polarized antenna groups form two beams, and these two beams are orthogonal and do not interfere with each other. Therefore, the two beams can carry different information, improving the communication capacity; at this time, a virtual aperture is formed at the center of the two polarized antenna groups;

[0007] When the switching switch is configured to: select the first signal terminal to a part of the plurality of first antenna port groups and select the second signal terminal to another part of the plurality of first antenna port groups, at this time, the first radio frequency terminal is selected to a part of the plurality of first polarized antenna groups, and the second radio frequency terminal is selected to another part of the plurality of first polarized antenna groups. All sensing signals are of the first polarization. That is to say, for sensing signals from different first radio frequency terminals and second radio frequency terminals, a part of the first polarized antenna group can form a beam, and another part of the first polarized antenna group can form another beam; because the space of a part and another part of the first polarized antenna group is separated, a virtual aperture is formed at the center of a part of the first polarized antenna group, and another virtual aperture is formed at the center of another part of the first polarized antenna group, doubling the virtual aperture, improving the angular resolution of the target object, without increasing the number of antennas, and reducing the cost.

[0008] In this solution, the sensing function and the communication function share the antenna group. By configuring the state of the switching switch, the virtual aperture of the antenna group is flexibly configured, meeting the communication capacity of the communication function and the angular resolution of the sensing function without increasing the number of antennas.

[0009] In one embodiment, the switching switch includes a first switching switch and a second switching switch, and in another embodiment, the switching switch includes a first switching switch to a fourth switching switch. In this solution, two switching switches can support the sensing function of ISAC at low cost, and four switching switches can time-division multiplex antennas in two polarization directions, so it can also be applied to meteorological radars.

[0010] The present invention also discloses a communication and sensing integrated system, including a beam control device and an antenna array; the beam control device is used for beamforming the service signal; the antenna array includes a transmitting antenna array and a receiving antenna array, and the transmitting antenna array is used for receiving the beamformed service signal. In one embodiment, the transmitting antenna array is arranged on both sides of the receiving antenna array in a first direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a hardware architecture block diagram of the ISAC system;

[0012] Figure 2 is a schematic diagram of the frame structure for time-division transmission of communication signals and sensing signals;

[0013] Figure 3 is a partial structural diagram of the communication system;

[0014] Figure 4 and Figure 5 are respectively partial structural diagrams of the ISAC system according to embodiments of the present invention;

[0015] Figures 6 to 8 are respectively Figure 4 detailed structural diagrams of the ISAC system shown;

[0016] Figures 9 to 12 is Figure 4 another detailed structural diagram of the ISAC system shown;

[0017] Figure 13 is a structural diagram of the first switching switch or the third switching switch according to an embodiment of the present invention;

[0018] Figure 14 is Figure 4 another detailed structural diagram of the ISAC system shown;

[0019] Figure 15 is Figure 3 a layout diagram of the antenna array of the communication system shown;

[0020] Figure 16 is Figure 4 a layout diagram of the antenna array of the ISAC system shown. Detailed implementation manners

[0021] To make the objectives and technical solutions of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] In this solution, "gating" means connecting a certain signal or circuit to a specific path or device. For example, gating the first radio frequency terminal to a plurality of the first polarization antenna groups can be understood as, through the setting of a switch, the first radio frequency terminal is connected to the plurality of the first polarization antenna groups by the switch.

[0023] First, the usage scenario of the present invention will be described.

[0024] ISAC can uniformly design communication and sensing functions. Among them, the communication service is used to transmit data with users, such as voice data, and the sensing service is used for radar positioning, so that while the wireless network performs high-quality communication interactions, it can achieve high-precision and refined sensing functions, improving the overall performance and service capabilities of the network.

[0025] Whether it is the sensing service or the communication service, multiple antennas are required to transmit and / or receive signals. Among them, the signals on the multiple antennas can be coherently combined, so that the multiple antennas can transmit directional electromagnetic wave energy or receive directional electromagnetic wave energy. The method that enables the signals on the multiple antennas to be combined can be called beamforming. Beamforming forms a strengthened signal in the desired direction by adjusting the amplitude and / or phase of the multiple antennas, while suppressing the signals in other directions. The directional electromagnetic wave energy transmitted or received by the multiple antennas can be called a beam.

[0026] Figure 1 Shows a hardware architecture block diagram of the ISAC system.

[0027] As Figure 1 shown, the ISAC system includes a signal transmitter 210 and a signal receiver 220.

[0028] The signal transmitter 210 includes: a channel encoder 212, which is used to receive a signal stream and encode the signal to increase the anti-interference ability and error correction ability, wherein the signal stream includes a communication stream and a perception reference, and the perception reference is used as a reference signal for positioning. A modulator 213 receives the signal encoded by the channel encoder 212 and is used to modulate the signal, including amplitude modulation, frequency modulation, etc.; a precoder 214 receives the signal modulated by the modulator 213 and is used to precode the signal before sending it to optimize the transmission quality, efficiency and anti-interference ability of the signal; a D / A converter 215 receives the digital signal precoded by the precoder 214 and is used to convert the digital signal into an analog signal for subsequent processing; a radio frequency front end 216 receives the analog signal output by the D / A converter 215 and is used to amplify, filter, mix, combine, split, phase shift or One or more of the processes such as beamforming; antenna 211 is used to transmit communication and perception signals, that is, to transmit the signal processed by the RF front end 216; wherein, the transmitted communication signal and the perception signal can be sent in time-sharing. In the communication stage, the signal stream passes through the channel encoder 212, the modulator 213, the precoder 214, the D / A converter 215, and the RF front end 216 in sequence, and then the communication signal is transmitted by the antenna 211; in the perception stage, the perception reference passes through the channel encoder 212, the modulator 213, the precoder 214, the D / A converter 215, and the RF front end 216, and then the perception signal is transmitted by the antenna 211.

[0029] The signal receiver 220 includes: an antenna 221, used to receive communication signals and perception signals; a radio frequency front end 222, used to amplify, filter, combine, split, phase shift or beamform the signal received by the antenna 221. In this embodiment, in the communication stage, the radio frequency front end 222 is used to amplify, filter, combine, split, phase shift or beamform the received communication signal. One or more processes; in the perception stage, the radio frequency front end 222 is also used to perform sum and difference calculations on the received perception signals to facilitate the positioning of the device to be detected.

[0030] The signal receiver 220 further includes: an A / D converter 223, which receives the analog signal processed by the RF front-end 222 and is used to convert the received analog signal into a digital signal, where the analog signal may include an analog communication signal and an analog sensing signal; a clock frequency offset 224, which receives the digital signal output by the A / D converter 223 and is used to correct the frequency offset of the received signal to ensure signal synchronization; a channel estimation 225, which receives the signal corrected by the clock frequency offset 224 during the communication phase and is used to estimate the channel characteristics for signal recovery and decoding; a MIMO equalizer 226, which receives the signal processed by the channel estimation 225 during the communication phase and is used to equalize the signal in a multiple-input multiple-output (MIMO) system to reduce interference and multipath effects; a demodulation 227, which receives the signal processed by the MIMO equalizer 226 during the communication phase and is used to restore the received modulated signal to the original digital signal, restoring the original communication stream for the transmission of communication information; a matched filter 228, which receives the signal corrected by the clock frequency offset 224 during the sensing phase and filters the signal to improve the sensitivity and accuracy of signal detection; a moving target detector 229, which receives the signal filtered by the matched filter 228 during the sensing phase and is used to detect the presence and position of a moving target based on this signal; a CFAR detector 230, which receives the signal transmitted by the moving target detector 229 during the sensing phase and is used to detect a target object in a noise background; a DoA estimator 231, which receives the signal output by the CFAR detector 230 during the sensing phase and estimates the direction of signal arrival; a clustering 232, which receives the signal output by the DoA estimator 231 during the sensing phase and is used to perform clustering analysis on the detected target objects to identify and classify different target objects; an object detection 233, which receives the signal output by the clustering 232 during the sensing phase and is used to detect and identify the target object; a target tracking 234, which receives the signal output by the object detection 233 during the sensing phase and is used to track the movement trajectory of the target object.

[0031] In the ISAC system, the precoder 214, modulator 213, channel encoder 212, channel estimation 225, MIMO equalizer 226, and demodulation 227 are used for communication functions to parse information such as voice data carried in communication signals (or communication streams); matched filter 228, moving target detector 229, CFAR detector 230, DoA estimator 231, clustering 232, object detection 233, and target tracking 234 are used for perception functions to obtain positioning information or trajectory information of the device to be detected from the perception signal (or communication reference). Antenna 211, RF front end 216, antenna 221, RF front end 222, and clock frequency offset 224 are all used when the system performs perception functions and communication functions, so they can be reused. For example, if the perception function and communication function are performed in time-sharing (described in detail below), antenna 211, RF front end 216, antenna 221, RF front end 222, and clock frequency offset 224 are reused in different working periods. In some embodiments, the antenna of the signal transmitter 210 can be time-division multiplexed with the antenna of the signal receiver 220, and the radio frequency front end of the signal transmitter 210 can be time-division multiplexed with the radio frequency front end of the signal receiver 220.

[0032] In some technologies, in order to achieve multiplexing of the above hardware structure, the communication signal and the perception signal are transmitted (including transmission and / or reception) in a time-sharing manner.

[0033] Figure 2 It is a schematic diagram of the frame structure of time-sharing transmission of communication signals and perception signals.

[0034] like Figure 2 As shown, the horizontal axis is the time domain and the vertical axis is the frequency domain. The communication signal and the perception signal occupy different symbol resource bits in the time domain and the frequency domain, forming an ISAC frame structure. Each unit in the time domain can be called an orthogonal frequency division multiplexing (OFDM) symbol, and each unit in the frequency domain can be called a subcarrier. There is a cyclic prefix (CP) between different symbols to reduce interference between symbols. Among them, the symbol is used to transmit the communication signal or the perception signal, and the CP does not transmit the communication signal or the perception signal.

[0035] Figure 3 It is a partial structural diagram of the communication system.

[0036] like Figure 3 As shown, the communication system includes a radio frequency end 101, a beam control device 102 and an antenna array 103.

[0037] The RF terminal 101 includes a first RF terminal 1011a and a second RF terminal 1011b. The first RF terminal 1011a and the second RF terminal 1011b are used to implement the conversion between the baseband signal (digital signal or intermediate frequency signal) and the RF signal, and provide or receive two service signals to / from the beam control device 102. As an example, the service signals include communication signals and sensing signals. The communication signals and the sensing signals are transmitted in a time-division manner, and the communication signals carry information data, such as voice data, etc. The sensing signals have waveform characteristics for detection, and the sensing signals do not include information data. The first RF terminal 1011a and the second RF terminal 1011b are two independent RF terminals. For example, the first RF terminal 1011a can be the V terminal, and the second RF terminal 1011b can be the H terminal; or, the first RF terminal 1011a can be the H terminal, and the second RF terminal 1011b can be the V terminal. Among them, in the communication stage, the H terminal is used to emit a signal of one polarization, and the V terminal is used to emit a signal of another polarization.

[0038] The beam control device 102 includes a plurality of antenna port groups, a plurality of beam channel groups, a first signal terminal and a second signal terminal. The first signal terminal 105a is used to connect to the first RF terminal 1011a, and the second signal terminal 105b is used to connect to the second RF terminal 1011b to receive the service signals from the first RF terminal 1011a and the second RF terminal 1011b. The plurality of beam channel groups are used to adjust the phase and / or amplitude of the service signals, so as to perform beamforming. As an example, Figure 3 only four beam channel groups 1021a - 1021d are shown. Each beam channel group 1021a - 1021d includes four beam channels. Each beam channel includes at least one amplitude-phase unit. Among them, each beam channel is used to connect to one antenna. As an example, the amplitude-phase unit is a phase shifter 201a and / or an amplitude regulator 201b. The phase shifter 201a is used to adjust the phase of the corresponding service signal based on the phase shift code, and the amplitude regulator 201b is used to adjust the amplitude of the corresponding service signal based on the amplitude code. Among them, the amplitude regulator 201b includes, such as, an attenuator or a variable gain amplifier, etc. In one example, the beam channel includes a series-connected phase shifter and amplitude regulator, so as to be able to adjust both the phase and the amplitude of the corresponding service signal. The plurality of antenna port groups are respectively connected to the plurality of beam channel groups and connected to the antenna array 103 to send the service signals output by the beam channel groups to the antenna array 103. In Figure 3 it, four antenna port groups 104a - 104d are schematically shown, which are respectively connected to the beam channel groups 1021a - 1021d. Each antenna port group may include four antenna ports to send the service signals to each antenna respectively. Among them, the number of antenna ports in the antenna port group may be the same as the number of beam channels.

[0039] The antenna array 103 is a dual-polarized antenna array. In Figure 3 , "X" represents a dual-polarized antenna, where " / " represents the antenna of the first polarization, "\" represents the antenna of the second polarization, and an antenna of the first polarization and an antenna of the second polarization form a dual-polarized antenna. As an example, Figure 3 only eight dual-polarized antennas are shown. The eight dual-polarized antennas are arranged in two rows and form the antenna array 103. The first polarization and the second polarization are orthogonal at 90°. For example: the first polarization can be vertical polarization, and the second polarization can be horizontal polarization; or, the first polarization can be horizontal polarization, and the second polarization can be vertical polarization; or, the first polarization can be 45° polarization, and the second polarization can be 135° polarization; or, the first polarization can be 135° polarization, and the second polarization can be 45° polarization.

[0040] The antenna array 103 includes a transmitting antenna array and a receiving antenna array. The transmitting antenna array is used to receive the service signal beamformed by the corresponding beam channel group from the corresponding radio frequency end and transmit it outward to the target object, and the receiving antenna array is used to receive the service signal reflected by the target object. For the sake of convenience of description, unless otherwise specified, the transmitting antenna array is taken as an example for description in this article. However, it can be understood that the principles of the transmitting antenna array and the receiving antenna array are similar, so the description of the transmitting antenna array can also be applied to the receiving antenna array.

[0041] The transmitting antenna array includes multiple antenna groups. As an example, Figure 3 only four antenna groups 1031a - 1031d are shown. Each of the antenna groups 1031a - 1031d includes four antennas with the same polarization direction. Among them, the four " / " antennas in the first row form the first polarization antenna group 1031a, the four " / " antennas in the second row form the first polarization antenna group 1031b, the four "\" antennas in the first row form the second polarization antenna group 1031c, and the four "\" antennas in the second row form the second polarization antenna group 1031d.

[0042] Continuing as Figure 3 shown, the four beam channel groups 1021a - 1021d include two first beam channel groups (i.e., beam channel groups 1021a, 1021b) and two second beam channel groups (i.e., beam channel groups 1021c, 1021d), and the four antenna groups 1031a - 1031d include two first polarization antenna groups (i.e., first polarization antenna groups 1031a, 1031b) and two second polarization antenna groups (i.e., second polarization antenna groups 1031c, 1031d).

[0043] Each first beam channel group is connected to the corresponding first polarized antenna group through the first antenna port group, and each second beam channel group is connected to the corresponding second polarized antenna group through the second antenna port group. In Figure 3 In it, the beam channel group 1021a in the first beam channel group is connected to the first polarized antenna group 1031a through the first antenna port group 104a, the beam channel group 1021b in the first beam channel group is connected to the first polarized antenna group 1031b through the first antenna port group 104b, the beam channel group 1021c in the second beam channel group is connected to the second polarized antenna group 1031c through the first antenna port group 104c, and the beam channel group 1021d in the second beam channel group is connected to the second polarized antenna group 1031d through the first antenna port group 104d.

[0044] The first radio frequency end 1011a is selected to be connected to the two first polarized antenna groups 1031a, 1031b, and the second radio frequency end 1011b is selected to be connected to the two second polarized antenna groups 1031c, 1031d. Thus, the service signals from the first radio frequency end 1011a and the service signals from the second radio frequency end 1011b are orthogonal by 90° and do not interfere with each other. If both service signals are communication signals, then due to different polarizations, independent radio channels are formed, and the system capacity is doubled. If both service signals are sensing signals, then when the sensing signal irradiates the target object, the characteristics of the target object itself will change the polarization state of the reflected electromagnetic wave signal, and this phenomenon is called the "polarization change effect". Measuring this change in polarization state can infer the physical properties of the target object, such as shape, structure, and material, etc., and can be applied to meteorological radars for detecting clouds and rain.

[0045] Therefore, there is an urgent need for a means to support the sensing function of ISAC with low cost and high angular resolution on the communication system platform.

[0046] Figure 4 and Figure 5 are respectively the schematic structural diagrams of the ISAC system according to the embodiments of the present invention.

[0047] Compared with Figure 3 , Figure 4 and Figure 5 In the ISAC system in, a switching switch 1022 is added to the beam control device 102 on the communication system platform. The switching switch 1022 can be a switch module including one or more switches. The switching switch 1022 is configured to selectively:

[0048] In the communication phase, the first signal terminal 105a is gated to the first antenna port groups 104a and 104b, and the second signal terminal 105b is gated to the second antenna port groups 104c and 104d, so that the first radio frequency terminal 1011a is gated to the two first polarization antenna groups 1031a and 1031b, and the second radio frequency terminal 1011b is gated to the two second polarization antenna groups 1031c and 1031d. At this time, the first polarization antenna groups 1031a and 1031b generate a first-polarized beam, and the second polarization antenna groups 1031c and 1031d generate a second-polarized beam. These two beams are orthogonal and do not interfere with each other. Therefore, the two beams can carry different information. Thus, during communication, the two polarized beams jointly form a complete communication beam for sending to a user, improving the communication capacity. Moreover, since the first-polarized beam and the second-polarized beam jointly form a complete communication beam, the emission position of this communication beam is equivalent to the center position of these two groups of polarized antennas (including 8 first polarization antennas " / " and 8 first polarization antennas "\"), forming a virtual aperture.

[0049] Alternatively, in the sensing phase, the first signal terminal 105a is gated to one first antenna port group (for example, the first antenna port group 104a), and the second signal terminal 105b is gated to another first antenna port group (for example, the first antenna port group 104b), so that the first radio frequency terminal 1011a is gated to one first polarization antenna group (for example, the first polarization antenna group 1031a), and the second radio frequency terminal 1011b is gated to another first polarization antenna group (for example, the first polarization antenna group 1031b). Among them, since only one polarized beam can be used for sensing in the sensing phase, the first polarization antenna group 1031a forms an independent beam, and the first polarization antenna group 1031b forms another independent beam. The emission position of the beam of the first polarization antenna group 1031a is equivalent to the center position of the first polarization antenna group 1031a (4 first polarization antennas " / " in the first row); the emission position of the beam of the first polarization antenna group 1031b is equivalent to the center position of the first polarization antenna group 1031b (4 first polarization antennas " / " in the second row). Because the emission positions of the beams of the first polarization antenna group 1031a and the first polarization antenna group 1031b are different, two virtual apertures are formed, which can increase the virtual aperture of the transmitting antenna. Compared with the communication phase, the virtual aperture in the sensing phase is doubled, improving the angular resolution of the target object without increasing the number of antennas and reducing the cost.

[0050] In some embodiments, one first polarization antenna group and another first polarization antenna group are located in different rows or different columns. Each antenna group can have one or more antennas.

[0051] In some embodiments, the beam control device 102 is implemented in the form of a chip, or a part of the beam control device 102 is implemented in the form of a chip, and the other part is implemented in the form of a PCB. When the beam control device 102 is implemented in the form of a chip, the antenna ports in the antenna port group can be the pins of the chip, and the first signal terminal and the second signal terminal can also be the pins of the chip; when the beam control device 102 is implemented in other forms, or when the beam control device 102 is integrated with the radio frequency end and / or the antenna array in a chip, the antenna ports in the antenna port group can be the input end of the antenna or the output end of the beam channel, and the first signal terminal and the second signal terminal can be the output end of the radio frequency end.

[0052] In the case where the first radio frequency end 1011a is selected and connected to the two first polarization antenna groups 1031a, 1031b, and the second radio frequency end 1011b is selected and connected to the two second polarization antenna groups, the service signals from the first radio frequency end 1011a and the service signals from the second radio frequency end 1011b are 90° orthogonal to each other and do not interfere with each other. At this time, the service signal is a communication signal, that is to say, the communication signals from different first radio frequency ends and second radio frequency ends can form a beam with two polarized antennas, which can improve the communication capacity, so that the communication function of ISAC can be supported at low cost on the communication system platform.

[0053] In the case where the first radio frequency end 1011a is selected and connected to one first polarization antenna group 1031a, and the second radio frequency end 1011b is selected and connected to another first polarization antenna group 1031b, the polarization directions of the service signals from the first radio frequency end 1011a and the service signals from the second radio frequency end 1011b are the same. At this time, the service signal is a sensing signal, because for the ISAC system for detecting airborne target objects, it does not require the two sensing signals to be 90° orthogonal. All the sensing signals are of the first polarization, that is to say, the sensing signals from different first radio frequency ends and second radio frequency ends can form two beams with one polarized antenna, doubling the virtual aperture and improving the angular resolution of the target, so that the sensing function of ISAC can be supported at low cost on the communication system platform.

[0054] Such as Figure 4As shown, in one embodiment, the switching switch 1022 is disposed between the first signal terminal 105a, the second signal terminal 105b and the beam channel groups 1021a - 1021d. Thus, the specific configuration of the switching switch 1022 can be: in the communication phase, the first signal terminal 105a is gated to two first beam channel groups (i.e., beam channel groups 1021a, 1021b), and the second signal terminal 105b is gated to two second beam channel groups (i.e., beam channel groups 1021c, 1021d) to improve the communication capacity; or, in the sensing phase, the first signal terminal 105a is gated to one first beam channel group (e.g., beam channel group 1021a), and the second signal terminal 105b is gated to another first beam channel group (e.g., beam channel group 1021b) to increase the virtual aperture of the transmitting antenna. The switching switch 1022 is disposed between the RF terminals 1011a, 1011b and the beam channel groups 1021a - 1021d, and the power loss brought by the switching switch 1022 is low.

[0055] As Figure 5 As shown, in one embodiment, the switching switch 1022 is disposed between the beam channel groups 1021a - 1021d and the antenna groups 1031a - 1031d. Thus, the specific configuration of the switching switch 1022 can be: in the communication phase, two first beam channel groups (i.e., beam channel groups 1021a, 1021b) are gated to two first polarization antenna groups 1031a, 1031b, and two second beam channel groups (i.e., beam channel groups 1021c, 1021d) are gated to two second polarization antenna groups 1031c, 1031d to improve the communication capacity; in some specific implementation manners, in the communication phase, the switching switch 1022 can gate each beam channel in the beam channel groups 1021a, 1021b to the corresponding antenna in the first polarization antenna groups 1031a, 1031b, and gate each beam channel in the beam channel groups 1021c, 1021d to the corresponding antenna in the second polarization antenna groups 1031c, 1031d; or, in the sensing phase, one first beam channel group (e.g., beam channel group 1021a) is gated to one first polarization antenna group (e.g., the first polarization antenna group 1031a), and another first beam channel group (e.g., beam channel group 1021b) is gated to another first polarization antenna group (e.g., the first polarization antenna group 1031b) to increase the virtual aperture of the transmitting antenna; in some specific implementation manners, in the sensing phase, the switching switch 1022 can gate each beam channel in the beam channel group 1021a to the corresponding antenna in the first polarization antenna group 1031a, and gate each beam channel in the beam channel group 1021b to the corresponding antenna in the first polarization antenna group 1031b.

[0056] In some embodiments, the switching switch 1022 can be a multi-pole multi-throw switch, which can select and connect the beam channel groups to different antenna groups.

[0057] In other embodiments, the number of beam channel groups may not be limited to four beam channel groups: In some specific implementation manners, the number of beam channel groups may also be three. The three beam channel groups include two first beam channel groups and one second beam channel group. Correspondingly, the number of antenna groups is also three. The three antenna groups include two first polarization antenna groups and one second polarization antenna group; In some specific implementation manners, the number of beam channel groups may also be eight. The eight beam channel groups include four first beam channel groups and four second beam channel groups. Correspondingly, the number of antenna groups is also eight. The eight antenna groups include four first polarization antenna groups and four second polarization antenna groups; In some specific implementation manners, the number of beam channel groups and antenna groups may also be other numbers.

[0058] In other embodiments, in each beam channel group, the number of beam channels may not be limited to four: In some specific implementation manners, the number of beam channels in each beam channel group may also be two, five, six, seven, eight or more. Correspondingly, in each antenna group, the number of antennas may not be limited to four: In some specific implementation manners, the number of antennas in each antenna group may also be two, five, six, seven, eight or more.

[0059] Figures 6 to 8 respectively Figure 4 The detailed structural schematic diagram of the ISAC system shown.

[0060] As Figure 6 shown, in one embodiment, the beam control device 200 further includes a first splitter 1023a and a second splitter 1023b. The input end of the first splitter 1023a is connected to the first signal terminal 105a, and the two output ends of the first splitter 1023a are connected to two first beam channel groups 1021a, 1021b, and are used to split the service signal from the first radio frequency terminal 1011a to the two first beam channel groups 1021a, 1021b. The input end of the second splitter 1023b is connected to the second signal terminal 105b, and the two output ends of the second splitter 1023b are connected to two second beam channel groups 1021c, 1021d, and are used to split the service signal from the second radio frequency terminal 1011b to the two second beam channel groups 1021c, 1021d. In this embodiment, the switching switch 1022 is Figure 4 a specific implementation manner of the switching switch 1022 in , and in this implementation manner, the switching switch 1022 is further arranged between the radio frequency terminals 1011a, 1011b and the splitters 1023a, 1023b.

[0061] Continue as Figure 6 shown. In one embodiment, the switching switch 1022 includes a first switching switch 1022a and a second switching switch 1022b. The first end ① of the first switching switch 1022a is connected to the second signal end 105b, the second end ② of the first switching switch 1022a is connected to the input end of the second splitter 1023b, the third end ③ of the first switching switch 1022a is connected to the first end ① of the second switching switch 1022b, the second end ② of the second switching switch 1022b is connected to the first beam channel group 1021b, and the third end ③ of the second switching switch 1022b is connected to an output end of the first splitter 1023a. Among them, in some embodiments, the first switching switch 1022a and the second switching switch 1022b can be single-pole double-throw switches. Figure 6 The structure of the switching switch 1022 shown is simple. Only by setting switching switches in two paths (the path between the second signal end 105b and the second splitter 1023b, the path between the first splitter 1023a and the first beam channel group 1021b), the insertion loss can be effectively reduced.

[0062] As Figure 7 shown, in the communication stage, when the first switching switch 1022a connects the first end ① and the second end ②, and the second switching switch 1022b connects the second end ② and the third end ③, the service signals (communication signals) from the first radio frequency end 1011a are split to the two first beam channel groups 1021a, 1021b through the two output ends of the first splitter 1023a, and thus are selected to the two first polarization antenna groups 1031a, 1031b. The service signals (communication signals) from the second radio frequency end 1011b are split to the two second beam channel groups 1021c, 1021d through the two output ends of the first switching switch 1022a and the second splitter 1023b, and thus are selected to the two second polarization antenna groups 1031c, 1031d. Among them, the central positions of the first polarization antenna groups 1031a, 1031b and the second polarization antenna groups 1031c, 1031d are the same, and a virtual aperture can be formed.

[0063] As Figure 8As shown, in the sensing stage, when the first switching switch 1022a connects the first terminal ① and the third terminal ③, and the second switching switch 1022b connects the first terminal ① and the second terminal ②, the service signal (sensing signal) from the first radio frequency terminal 1011a is split to the first beam channel group 1021a via the other output terminal of the first splitter 1023a, and thus is selected to the first polarization antenna group 1031a. The service signal (sensing signal) from the second radio frequency terminal 1011b is split to the first beam channel group 1021b via the first switching switch 1022a and the second switching switch 1022b, and thus is selected to the first polarization antenna group 1031b. Among them, the first polarization antenna group 1031a and the first polarization antenna group 1031b are located at different positions and can form two virtual apertures. Compared with the communication stage, the virtual aperture in the sensing stage is doubled, improving the angular resolution of the target object without increasing the number of antennas and reducing costs.

[0064] Continue as Figure 6 As shown, in one embodiment, the fourth terminal ④ of the first switching switch 1022a is grounded to GND. When the first switching switch 1022a connects the first terminal ① and the fourth terminal ④, the service signal from the second radio frequency terminal 1011b is selected to the ground GND via the first switching switch 1022a, thus turning off the service signal from the second radio frequency terminal 1011b. The antenna feed can be configured more flexibly. And when there is no signal input in the second radio frequency terminal 1011b, the second signal terminal 105b can be grounded to prevent signal reflection. More specifically, the fourth terminal of the first switching switch 1022a is grounded to GND via a matching resistor R1, and the resistance value of the matching resistor R1 is, for example, 50 ohms.

[0065] Figures 9 to 12 is Figure 4 Another detailed structural schematic diagram of the ISAC system shown.

[0066] Compared with Figure 6 , in addition to the first switching switch 1022a and the second switching switch 1022b, Figure 9 the switching switch 1022 in

[0067] AsFigure 10 As shown, during the communication phase, when the third switching switch 1022c connects the first terminal ① and the second terminal ②, and the fourth switching switch 1022d connects the second terminal ② and the third terminal ③, and when the first switching switch 1022a connects the first terminal ① and the second terminal ②, and the second switching switch 1022b connects the second terminal ② and the third terminal ③, the service signal from the first radio frequency terminal 1011a is split to two first beam channel groups 1021a, 1021b via the two output terminals of the first splitter 1023a, and thus is gated to two first polarization antenna groups 1031a, 1031b. The service signal from the second radio frequency terminal 1011b is split to two second beam channel groups 1021c, 1021d via the first switching switch 1022a and the two output terminals of the second splitter 1023b, and thus is gated to two second polarization antenna groups 1031c, 1031d. At this time, it is suitable for transmitting communication signals.

[0068] As Figure 11 shown, during the sensing phase, when the third switching switch 1022c connects the first terminal ① and the second terminal ②, and the fourth switching switch 1022d connects the second terminal ② and the third terminal ③, and when the first switching switch 1022a connects the first terminal ① and the third terminal ③, and the second switching switch 1022b connects the first terminal ① and the second terminal ②, the service signal from the first radio frequency terminal 1011a is split to the first beam channel group 1021a via another output terminal of the first splitter 1023a, and thus is gated to the first polarization antenna group 1031a. The service signal from the second radio frequency terminal 1011b is split to the first beam channel group 1021b via the first switching switch 1022a and the second switching switch 1022b, and thus is gated to the first polarization antenna group 1031b. At this time, it is suitable for transmitting sensing signals.

[0069] As Figure 12 shown, when the third switching switch 1022c connects the first terminal ① and the third terminal ③, and the fourth switching switch 1022d connects the first terminal ① and the third terminal ③, and when the first switching switch 1022a connects the first terminal ① and the second terminal ②, and the second switching switch 1022b connects the first terminal ① and the second terminal ②, the service signal from the first radio frequency terminal 1011a is split to the second beam channel group 1021c via the third switching switch 1022c and the fourth switching switch 1022d, and thus is gated to the second polarization antenna group 1031c. The service signal from the second radio frequency terminal 1011b is split to the second beam channel group 1021d corresponding to one output terminal of the second splitter 1023b via the first switching switch 1022a and one output terminal of the second splitter 1023b, and thus is gated to the second polarization antenna group 1031d. At this time, it is suitable for transmitting sensing signals.

[0070] Refer toFigure 11 and Figure 12 , compared with Figure 8 , due to the addition of the third switching switch 1022c and the fourth switching switch 1022d, two different polarization antenna groups can be time-division multiplexed. The antenna groups of two polarizations can form more beams, can detect more information, and thus can also be used in a weather radar.

[0071] Return to Figure 9 , compared with Figure 6 , in one embodiment, in addition to the fourth terminal ④ of the first switching switch 1022a being grounded to GND via the matching resistor R1, the fourth terminal ④ of the third switching switch 1022c is grounded to GND. When the third switching switch 1022c connects the first terminal ① and the fourth terminal ④, the service signal from the first radio frequency terminal 1011a is gated to the ground GND via the third switching switch 1022c, so as to turn off the service signal from the first radio frequency terminal 1011a, and the antenna feed can be configured more flexibly. And when there is no signal input in the first radio frequency terminal 1011a, the first signal terminal 105a can be grounded to prevent signal reflection. More specifically, the fourth terminal of the third switching switch 1022c is grounded to GND via the matching resistor R2, and the resistance value of the matching resistor R2 is, for example, 50 ohms.

[0072] Return to Figure 4 and Figure 5 , in one embodiment, during beam switching, a service switching signal is sent to the corresponding switching switch 1022 to connect the corresponding terminals of the switching switch 1022; the service switching signal can be a digital signal. In addition, a wave control code is sent to the corresponding beam channel group 1021, and the beam channel group 1021 adjusts the phase and / or amplitude of the corresponding service signal based on the wave control code to adjust the direction and / or shape of the beam; the wave control code can be a digital signal. As an example, the wave control code includes a phase shift code and / or an amplitude code. The phase shift code is a control signal for controlling the phase of the service signal, and the amplitude code is a control signal for controlling the amplitude of the service signal.

[0073] Specifically, during the first service signal is sent from the radio frequency terminal 101 to the beam control device 102, the selected beam channel group 1021 adjusts the phase and / or amplitude of the first service signal based on the first wave control code. When the service signal is switched to the second service signal, the service switching signal is sent to the switching switch 1022, and the selected beam channel group 1021 adjusts the phase and / or amplitude of the second service signal based on the second wave control code. The second service signal is a service signal that is located after the first service signal in the time domain, for example, in Figure 2Among them, the first service signal can be any symbol in the time domain, and the second service signal is any symbol after this symbol. That is to say, the second service signal can be the first, second, or third symbol after the first service signal. For example, the first service signal can be symbol 1, and the second service signal can be symbol 2. It can be understood that when the beam of the second service signal changes from that of the first service signal, it is necessary to use the second beam control code to adjust the phase and / or amplitude of the second service signal. In one embodiment, within the cyclic prefix (CP) of the symbol where the second service signal is located, the service switching signal is sent to the switching switch 1022 to ensure that a proper gating path is established before the second service signal is sent.

[0074] In one embodiment, the beam control device 102 includes a control interface 1024, and the service switching signal and the beam control code are respectively sent to the corresponding switching switch 1022 and the beam channel group 1021 via the control interface 1024. As an example, the control interface 1024 includes an SPI bus interface.

[0075] Figure 13 It is a schematic structural diagram of the first switching switch and the third switching switch according to an embodiment of the present invention, where Figure 13 the terminals ①, ②, ③, and ④ in Figures 6 - 12 correspond to the terminals ①, ②, ③, and ④ of the first switching switch and the third switching switch in

[0076] As shown in Figure 13 , the first switching switch or the third switching switch includes: the first switch tube M1 to the fourth switch tube M4 and the first inverter INV1 and the second inverter INV2.

[0077] The control end of the first switch tube M1 is used to receive the service switching signal 1 via the first inverter INV1. The first end of the first switch tube M1 is connected to the first radio frequency end or the second radio frequency end. The first end of the first switch tube M1 is used to receive the service signal, and the second end of the first switch tube M1 is used to output the service signal when the first switch tube M1 is turned on. Among them, the service signal can be a sensing signal or a communication signal; the service switching signal 1 is used to switch the on or off state of the first switch tube M1 and the second switch tube M2.

[0078] The control end of the second switch tube M2 is used to receive the service switching signal 1. The first end of the second switch tube M2 is connected to the first radio frequency end or the second radio frequency end. The first end of the second switch tube M2 is used to receive the service signal, and the second end of the second switch tube M2 is used to ground the first radio frequency end or the second radio frequency end when the second switch tube M2 is turned on to prevent signal reflection.

[0079] By setting the first inverter INV1, the switching states of the first switching transistor M1 and the second switching transistor M2 are always opposite.

[0080] The control terminal of the third switching transistor M3 is used to receive the service switching signal 2 via the second inverter INV2. The first terminal of the third switching transistor M3 is connected to the second terminal of the first switching transistor M1. The first terminal of the third switching transistor M3 is used to receive the service signal, and the second terminal of the third switching transistor M3 is used to output the service signal when the third switching transistor M3 is turned on, and send the service signal to the corresponding beam channel group; the service switching signal 2 is used to switch the on or off states of the third switching transistor M3 and the fourth switching transistor M4.

[0081] The control terminal of the fourth switching transistor M4 is used to receive the service switching signal 2. The first terminal of the fourth switching transistor M4 is connected to the second terminal of the first switching transistor M1. The first terminal of the fourth switching transistor M4 is used to receive the service signal, and the second terminal of the fourth switching transistor M4 is used to output the service signal when the fourth switching transistor M4 is turned on, and send the service signal to the corresponding beam channel group.

[0082] By setting the second inverter INV2, the switching states of the third switching transistor M3 and the fourth switching transistor M4 are always opposite, so that the service signal can only be output via one of the third switching transistor M3 and the fourth switching transistor M4.

[0083] The first switching switch or the third switching switch may further include input matching and output matching for impedance matching.

[0084] Figure 13 In the shown switching switch, the first switching transistor M1 and the second switching transistor M2 can be controlled by the same service switching signal 2, and the third switching transistor M3 and the fourth switching transistor M4 can be controlled by the same service switching signal 1. The control logic is simple and the chip area is saved; compared with the third switching transistor M3 and the fourth switching transistor M4, the first switching transistor M1 and the second switching transistor M2 are arranged close to end ①. Only the service switching signal 1 is needed to control the first switching transistor M1 to be turned off and the second switching transistor M2 to be turned on, and the ground switching can be conveniently realized.

[0085] In some embodiments, the second switching switch 1022b and the fourth switching switch 1022d are single-pole double-throw switches.

[0086] In some embodiments, Figure 4 The switching switch 1022 in Figure 6It is implemented in the manner shown. For example, the switching switch may further include a first switching switch and a second switching switch; the first end of the first switching switch is connected to the output end of the corresponding beam channel group 1021c of the second splitter 1023b, the second end of the first switching switch is connected to the second beam channel group 1021c, the third end of the first switching switch is connected to the first end of the second switching switch, the second end of the second switching switch is connected to the first beam channel group 1021b, and the third end of the second switching switch is connected to the output end of the corresponding beam channel group 1021b of the first splitter 1023a. The switching switch in this embodiment can also achieve different configurations in the communication phase and the sensing phase.

[0087] In some embodiments, Figure 4 the switching switch 1022 in Figure 14 may also adopt a switching switch as shown in Figure 14 As shown in the switching switch 1022 includes four ends: the first end is connected to an output end of the first splitter 1023a, the second end is connected to the first beam channel group 1021b, the third end is connected to the second signal end 105b, and the fourth end is connected to the input end of the second splitter 1023b. In the communication phase, the first end is conducted with the second end the third end is conducted with the fourth end and the second end is disconnected from the third end In the sensing phase, the first end is disconnected from the second end the third end is disconnected from the fourth end and the second end is conducted with the third end. The switching switch in this embodiment can also achieve different configurations in the communication phase and the sensing phase, and has a simple structure and small insertion loss.

[0088] Those skilled in the art can understand that the structure of the switching switch 1022 is not limited to the example cases listed above. Based on the technical principles and concepts of the present invention, the switching switch 1022 can also adopt other various reasonable structural forms, and the specific structural form of the switching switch 1022 is not limited herein.

[0089] Figure 15 is a schematic diagram of the virtual aperture of the antenna array in the comparative example.

[0090] As Figure 15As shown, the antenna array 103 includes a transmitting antenna array 1, a transmitting antenna array 2, and a receiving antenna array. All these antenna arrays use dual-polarized antennas. Among them, both the transmitting antenna array 1 and the transmitting antenna array 2 can adopt the antenna array 103 as shown in Figure 3 In Figure 3 the antenna array 103 is a 2×4 array. Figure 15 In Figure 3 and Figure 15 , when performing ISAC sensing on this communication system platform, all the first-polarized antennas " / " in the transmitting antenna array 1 receive a sensing signal transmitted from a radio frequency end, and the transmitting antenna array 1 forms a transmitting beam. All the first-polarized antennas " / " in the transmitting antenna array 2 receive a sensing signal transmitted from a radio frequency end, and the transmitting antenna array 2 forms another transmitting beam. When the receiving antenna array includes four antennas, this system is called a 2T4R system. If the spacing between the two beams is 4d, and the spacing between the four antennas in the receiving antenna array is d, that is, the received phase relationship is satisfied, then these four receiving antennas are shifted by 4d. After combination, they can be equivalent to two receiving antenna arrays, that is to say, equivalent to 2×4 receiving antennas, and the virtual aperture of this system is eight.

[0091] The angular resolution Δθ of the sensing of the dual-polarized transceiver pair system does not gain. Among them, the angular resolution Δθ satisfies the following formula: , is the signal incoming direction, is the number of receiving antenna groups, is the number of transmitting antenna groups. The angular resolution Δθ is used to indicate the ability to sense two different objects. As the number of antennas increases, the angular resolution Δθ begins to become smaller, that is, two objects with a very small spacing can be sensed. However, increasing the number of transmitting or receiving antennas will increase the cost.

[0092] Figure 16 is the schematic diagram of the virtual aperture of the antenna array in the embodiment of this application.

[0093] As Figure 16 shown, the antenna array 103 includes a transmitting antenna array 1, a transmitting antenna array 2, and a receiving antenna array. Among them, both the transmitting antenna array 1 and the transmitting antenna array 2 can adopt the antenna array 103 as shown in Figure 4 In Figure 4 the antenna array 103 is a 2×4 array. Figure 16The transmit antenna array 1 is a 2×4 array, and the transmit antenna array 2 is a 2×4 array. In other embodiments, the number of transmit antenna arrays is not limited to two, and may also be three, four, or more. The number of receive antenna arrays is not limited to one, and may also be two, three, or more. The receive antenna array can be located between any two different transmit antenna arrays. When both the transmit antenna array and the receive antenna array include multiple ones, different receive antenna arrays can be located between different transmit antenna arrays.

[0094] Combined with Figure 4 and Figure 16 , when ISAC sensing is performed in this ISAC system, through switch switching, all the first-polarized antennas " / " in the transmit antenna array 1 can receive the sensing signals transmitted by two RF terminals, and the transmit antenna array 1 forms two transmit beams. All the first-polarized antennas " / " in the transmit antenna array 2 receive the sensing signals transmitted by two RF terminals, and the transmit antenna array 2 forms another two transmit beams.

[0095] Figure 16 The transmit antenna array 1 in includes two rows of the same-polarized antenna groups from top to bottom. Among them, one path of sensing signal is fed into the first-row antenna group of this transmit antenna array to form one transmit beam; the other path of sensing signal is fed into the second-row antenna group of this transmit antenna array to form another transmit beam. Thus, the transmit antenna array 1 forms two transmit beams. Similarly, the transmit antenna array 2 also forms two transmit beams. Therefore, the transmit antenna arrays 1 and 2 together form 4 transmit beams. When the receive antenna array includes four antennas, this system is called a 4T4R system. When the received phase relationship is satisfied, after combination, it can be equivalent to four receive antenna arrays, that is, equivalent to 4×4 receive antennas. The virtual aperture of this system is sixteen, compared with Figure 15 the virtual aperture of has doubled.

[0096] Since the equivalent number of transmit antennas has doubled, the angular resolution Δθ has also doubled, but the actual number of transmit antennas has not increased, that is, the cost has not increased.

[0097] In other embodiments, the transmitting antenna array is not limited to a 2×4 array, and can also be a 4×4 array, or an array with other numbers. In one embodiment, in the first direction (e.g., the vertical direction), a part of the first polarization antenna group and another part of the first polarization antenna group are spaced apart from each other. For example, when the transmitting antenna array is a 4×4 array, in the sensing stage, one sensing signal is fed into the first row and the third row of the transmitting antenna array, and the other sensing signal is fed into the second row and the fourth row of the transmitting antenna array. That is to say, the antennas corresponding to one sensing signal and the antennas corresponding to the other sensing signal are spaced apart from each other. In one embodiment, in the first direction (e.g., the vertical direction), a part of the multiple first polarization antenna groups and another part of the multiple first polarization antenna groups are located on both end sides of the antenna array. For example, when the transmitting antenna array is a 4×4 array, in the sensing stage, one sensing signal is fed into the antenna groups of the first row of the transmitting antenna array, and the other sensing signal is fed into the antenna groups of the fourth row of the transmitting antenna array, so as to maximize the distance between the two sensing signals as much as possible. The two orthogonal sensing signals are radiated from both end sides of the receiving antenna array respectively, so that a larger virtual aperture can be formed, and the angular resolution Δθ can be further improved.

[0098] In this solution, as Figure 16 shown, in the first direction (such as Figure 16 the longitudinal direction), the receiving antenna array is placed in the middle of the transmitting antenna array. The two orthogonal sensing signals are radiated from both sides of the receiving antenna array respectively, and a larger virtual aperture can be formed, thereby improving the angular resolution.

[0099] It should be noted that in the claims and the specification of this patent, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one" does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0100] Although the present invention has been illustrated and described by referring to some preferred embodiments of the present invention, those of ordinary skill in the art should understand that various changes can be made in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A beam control device, characterized in that, Comprising: A plurality of first antenna port groups and at least one second antenna port group, the plurality of first antenna port groups being for connecting to a plurality of first polarized antenna groups, and the at least one second antenna port group being for connecting to at least one second polarized antenna group, each antenna group including one or more antennas with the same polarization direction; A plurality of first beam channel groups and at least one second beam channel group, the first beam channel groups being connected to the first antenna port groups, and the second beam channel groups being connected to the second antenna port groups; A first signal terminal and a second signal terminal, the first signal terminal being for connecting to a first radio frequency terminal, and the second signal terminal being for connecting to a second radio frequency terminal; A switching switch configured to selectively: Route the first signal terminal to the plurality of first antenna port groups and route the second signal terminal to the at least one second antenna port group; Or, Route the first signal terminal to a part of the plurality of first antenna port groups and route the second signal terminal to another part of the plurality of first antenna port groups.

2. The beam control device according to claim 1, wherein The switching switch is located between the first signal terminal, the second signal terminal and the beam channel groups; The switching switch being configured to selectively route the first signal terminal to the plurality of first antenna port groups and route the second signal terminal to the at least one second antenna port group includes: routing the first signal terminal to the plurality of first beam channel groups and routing the second signal terminal to the at least one second beam channel group; The switching switch being configured to selectively route the first signal terminal to a part of the plurality of first antenna port groups and route the second signal terminal to another part of the plurality of first antenna port groups includes: routing the first signal terminal to a part of the plurality of first beam channel groups and routing the second signal terminal to another part of the plurality of first beam channel groups.

3. The beam control device according to claim 1, characterized in that, The switching switch is located between the beam channel groups and the first antenna port groups, the second antenna port groups; The switching switch being configured to selectively route the first signal terminal to the plurality of first antenna port groups and route the second signal terminal to the at least one second antenna port group includes: routing the plurality of first beam channel groups to the plurality of first antenna port groups and routing the second beam channel group to the at least one second antenna port group; The switching switch being configured to selectively route the first signal terminal to a part of the plurality of first antenna port groups and route the second signal terminal to another part of the plurality of first antenna port groups includes: routing a part of the first beam channel groups to a part of the plurality of first antenna port groups and routing the second beam channel group to another part of the plurality of first antenna port groups.

4. The beam control device according to claim 2, characterized in that Further comprising: A first splitter for splitting the service signal from the first signal terminal to the plurality of first beam channel groups; A second splitter for splitting the service signal from the second signal terminal to the at least one second beam channel group.

5. The beam control device according to claim 4, wherein The switching switch includes a first switching switch and a second switching switch; Wherein, a first end of the first switching switch is connected to the second signal terminal, a second end of the first switching switch is connected to an input end of the second splitter, a third end of the first switching switch is connected to a first end of the second switching switch, a second end of the second switching switch is connected to at least one in the first beam channel group, and a third end of the second switching switch is connected to partial output ends of the first splitter.

6. The beam control device according to claim 5, wherein A fourth end of the first switching switch is grounded.

7. The beam control device according to claim 5, wherein The switching switch further includes a third switching switch and a fourth switching switch; Wherein, a first end of the third switching switch is connected to the first signal terminal, a second end of the third switching switch is connected to an input end of the first splitter, a third end of the third switching switch is connected to a first end of the fourth switching switch, a second end of the fourth switching switch is connected to partial output ends of the second splitter, and a third end of the fourth switching switch is connected to at least one in the second beam channel group.

8. The beam control device according to claim 7, wherein A fourth end of the first switching switch is grounded, and a fourth end of the third switching switch is grounded.

9. The beam control device according to claim 8, wherein, Both the first switching switch and the third switching switch include a first switching tube, a second switching tube, a third switching tube, and a fourth switching tube, and each switching tube includes a first end, a second end, and a control end; A control end of the first switching tube is configured to receive a first service switching signal, a first end of the first switching tube is connected to the first signal terminal or the second signal terminal, and a second end of the first switching tube is connected to first ends of the third switching tube and the fourth switching tube; A control end of the second switching tube is configured to receive an inverted first service switching signal, a first end of the second switching tube is connected to the first signal terminal or the second signal terminal, and a second end of the second switching tube is grounded; A control end of the third switching tube is configured to receive a second service switching signal, and a second end of the third switching tube is connected to the corresponding beam channel group; A control end of the fourth switching tube is configured to receive an inverted second service switching signal, and a second end of the fourth switching tube is connected to the corresponding beam channel group; Both the second switching switch and the fourth switching switch are single-pole double-throw switches.

10. The beam control device according to claim 9, wherein, Within a cyclic prefix of a symbol where the service signal is located, the service switching signal is sent to each of the switching switches.

11. The beam control device according to claim 4, wherein The switching switch includes a first switching switch and a second switching switch; Wherein, a first end of the first switching switch is connected to partial output ends of the second splitter, a second end of the first switching switch is connected to at least one in the second beam channel group, a third end of the first switching switch is connected to a first end of the second switching switch, a second end of the second switching switch is connected to at least one in the first beam channel group, and a third end of the second switching switch is connected to partial output ends of the first splitter.

12. The beam control device according to claim 4, wherein The switching switch includes a first end, a second end, a third end, and a fourth end: the first end is connected to an output end of the first splitter, the second end is connected to an input end of the first beam channel group, the third end is connected to a second signal end, and the fourth end is connected to an input end of the second splitter; Between the first end and the second end is configured to be conductive or disconnected, between the third end and the fourth end is configured to be conductive or disconnected, and between the second end and the third end is configured to be conductive or disconnected.

13. The beam control device according to claim 1, characterized in that, The switching switch is configured to selectively: When transmitting communication signals, select the first signal end to multiple of the first antenna port groups and select the second signal end to at least one of the second antenna port groups; Or, When transmitting sensing signals, select the first signal end to a part of multiple of the first antenna port groups and select the second signal end to another part of multiple of the first antenna port groups.

14. A communication and sensing integrated system, characterized in that, Comprising: The beam control device according to any one of claims 1 to 13, for beamforming service signals; An antenna array, including a transmitting antenna array and a receiving antenna array, the transmitting antenna array is connected to the beam control device for receiving the beamformed service signals.

15. The integrated communication and sensing system according to claim 14, wherein The transmitting antenna array includes the first polarization antenna group and the second polarization antenna group; In a first direction, a part of the first polarization antenna group and another part of the first polarization antenna group are spaced apart from each other; Or, in the first direction, another part of multiple of the first polarization antenna groups is located at both ends of the first polarization antenna group.

16. The integrated communication and sensing system according to claim 14, wherein Comprising at least two of the transmitting antenna arrays, and the receiving antenna array is located between different transmitting antenna arrays.

Images