Communication and perception integrated base station, method and storage medium

Abstract

The embodiment of the invention provides a communication and perception integrated base station, a method and a storage medium. The base station comprises an active antenna unit (AAU) structure, a receiving circuit and a controller, wherein the receiving circuit and the controller are arranged on the AAU structure; the controller is respectively connected with the AAU structure and the receiving circuit; the controller is used for controlling the receiving circuit and a receiving link in the AAU structure to respectively receive a first signal transmitted by a transmitting link in the AAU structure under the condition that a target service is detected, so as to meet the number of receiving channels corresponding to the target service; the target service at least comprises a sensing service and / or an uplink coverage enhanced communication service.

Description

Technical Field

[0001] The present invention relates to the field of wireless communications, and in particular to a communication and perception integrated base station, method and storage medium. Background Art

[0002] The existing base stations have the following problems:

[0003] 1. The hardware transceiver isolation of the existing base station active antenna unit (AAU) cannot meet the ability of a single station to simultaneously send and receive sensing signals. Therefore, the transmission and reception specifications need to be reduced to meet the needs of the sensing scenario. In conventional communications, the number of transmitting channels (nT) or the number of receiving channels (nR) must be reduced to n / 2T or n / 2R when used in sensing scenarios. If the number of channels does not need to be halved, the number of transmitting and receiving channels needs to be doubled, which is costly and expensive.

[0004] 2. The existing base station channels and antenna arrays are symmetrical in transmission and reception. Due to the limited transmission capability of the terminal, there is a stubborn problem of limited uplink coverage;

[0005] 3. When designing a high-channel-count, large-array-scale station type for the purpose of increasing capacity or expanding coverage, it is necessary to accurately estimate the demand scenario. The RF unit can only be replaced after it is installed on the station, and the capacity cannot be flexibly expanded or reduced as needed. Summary of the invention

[0006] In order to solve the existing technical problems, the embodiments of the present invention provide a communication and perception integrated base station, method and storage medium.

[0007] To achieve the above object, the technical solution of the embodiment of the present invention is implemented as follows:

[0008] An embodiment of the present invention provides a communication and perception integrated base station, the base station comprising an AAU structure, a receiving circuit and a controller arranged on the AAU structure; the controller is connected to the AAU structure and the receiving circuit respectively;

[0009] The controller is used to control the receiving circuit and the receiving link in the AAU structure to respectively receive the first signal transmitted by the transmitting link in the AAU structure when a target service is detected, so as to meet the number of receiving channels corresponding to the target service; the target service includes at least a perception service and / or an uplink coverage enhanced communication service.

[0010] In the above scheme, the receiving circuit includes a first antenna, a first filter and a first amplifier (LowNoise Amplifier, LNA); the first filter is connected to the first antenna and the first LNA respectively; the first LNA is connected to the AAU structure;

[0011] The first antenna is used to receive the first signal;

[0012] The first filter is used to filter the interference signal in the first signal to obtain a second signal;

[0013] The first LNA is used to amplify the second signal to obtain a third signal;

[0014] The AAU structure is used to receive the three signals to meet the number of receiving channels corresponding to the target service.

[0015] In the above scheme, the AAU structure includes a digital intermediate frequency receiver (Digital Intermediate Frequency Receiver, DIFR) and a first transceiver (Transceiver, TRX); the DIFR is connected to the first TRX; the receiving end in the first TRX is connected to one end of the first LNA through a first switch; the transmitting end in the first TRX is connected to the other end of the first LNA through a second switch;

[0016] The controller is also used to control the first switch to be in an off state so that the receiving link in the first TRX is in an inoperative state; and control the second switch to be in an on state so that the receiving circuit is in an operating state when it is detected that the target service is the sensing service and the coverage distance required by the sensing service is less than a preset threshold.

[0017] In the above scheme, the controller is also used to control the first switch to be in the on state and the second switch to be in the off state when it is detected that the target service is the communication service, so that the signal received by the receiving link in the first TRX and the signal received by the receiving circuit are superimposed.

[0018] In the above solution, the receiving circuit further includes a phase shifter; the base station further includes a processor; one end of the phase shifter is connected to the first switch; the other end of the phase shifter is connected to the first LNA; the processor is connected to the receiving circuit and the first TRX respectively;

[0019] The processor is further configured to calibrate the signal received by the receiving link to obtain a first calibration value; and calibrate the signal received by the receiving circuit to obtain a second calibration value; and determine a third calibration value based on the first calibration value and the second calibration value;

[0020] The phase shifter is used to store the third calibration value, and use the third calibration value to calibrate the signal received by the receiving circuit to obtain a calibrated signal, so that the signal received by the receiving link in the first TRX and the calibrated signal are superimposed in phase.

[0021] In the above solution, the AAU structure further includes a first power amplifier (PA), a second LNA, a second filter and a second antenna; one end of the PA is connected to the transmitting end in the first TRX; the other end of the PA is respectively connected to one end of the second LNA and one end of the second filter; the other end of the second LNA is connected to the second switch; the other end of the second filter is connected to the second antenna;

[0022] The PA is used to amplify the first signal to obtain an amplified signal;

[0023] The second antenna is used to receive the amplified signal;

[0024] The second filter is used to filter the interference signal in the amplified signal to obtain a filtered signal;

[0025] The second LNA is used to amplify the filtered signal to obtain a signal received by the receiving link in the first TRX.

[0026] In the above solution, the AAU structure includes a digital intermediate frequency receiver DIFR and a second transceiver TRX; the receiving circuit also includes a third transceiver TRX; the DIFR is connected to the second TRX and the third TRX respectively;

[0027] The controller is further used to control the receiving link in the third TRX to receive the signal transmitted by the transmitting link in the third TRX when it is detected that the target service is the sensing service and the coverage distance required by the sensing service is greater than or equal to a preset threshold.

[0028] In the above solution, the third TRX includes a modulator (IQ) and a converter (Analog-to-digital converter, ADC); the IQ is connected to the ADC; the IQ is connected to the first LNA;

[0029] The IQ is used to modulate the direction of the third signal to obtain a modulated signal;

[0030] The ADC is used to perform digital conversion on the modulated signal to obtain a converted digital signal;

[0031] The AAU structure is also used to receive the digital signal to meet the number of receiving channels corresponding to the target service.

[0032] In the above solution, the AAU structure further includes a second power amplifier PA, a third amplifier LNA, a third filter and a third antenna; one end of the second PA is connected to the transmitting end in the second TRX; the other end of the second PA is respectively connected to one end of the third LNA and one end of the third filter; the other end of the third filter is connected to the third antenna;

[0033] The third PA is used to amplify the first signal to obtain an amplified signal;

[0034] The third antenna is used to receive the amplified signal;

[0035] The third filter is used to filter the interference signal in the amplified signal to obtain a filtered signal;

[0036] The third LNA is used to amplify the filtered signal to obtain a signal received by the receiving link in the third TRX.

[0037] In the above solution, the receiving circuit is detachably arranged on the AAU structure.

[0038] An embodiment of the present invention provides a communication and perception integrated processing method, which is applied to the above-mentioned base station; the method includes:

[0039] When the target service is detected, the receiving circuit in the base station and the receiving link in the AAU structure are controlled to respectively receive the first signal transmitted by the transmitting link in the AAU structure to meet the number of receiving channels corresponding to the target service; the target service includes at least perception service and / or uplink coverage enhanced communication service.

[0040] In the above solution, the method further includes:

[0041] When it is detected that the target service is the perception service and the coverage distance required by the perception service is less than a preset threshold, the first switch in the base station is controlled to be in an off state so that the receiving link in the first TRX in the base station is in an inoperative state; and the second switch in the base station is controlled to be in an on state so that the receiving circuit is in an operating state.

[0042] In the above solution, the method further includes:

[0043] When it is detected that the target service is the communication service, the first switch in the base station is controlled to be in an on state and the second switch in the base station is controlled to be in an off state, so that the signal received by the receiving link in the first TRX in the base station and the signal received by the receiving circuit are superimposed.

[0044] In the above solution, the method further includes:

[0045] When it is detected that the target service is the perception service and the coverage distance required by the perception service is greater than or equal to a preset threshold, the receiving link in the third TRX in the base station is controlled to receive the signal transmitted by the transmitting link in the third TRX.

[0046] The present invention also provides a storage medium on which a computer program is stored, and when the computer program is executed by a processor, any step of the above-mentioned method is implemented.

[0047] The embodiment of the present invention provides a communication and perception integrated base station, method and storage medium, wherein the base station includes an AAU structure, a receiving circuit and a controller arranged on the AAU structure; the controller is connected to the AAU structure and the receiving circuit respectively; the controller is used to control the receiving circuit and the receiving link in the AAU structure to respectively receive the first signal transmitted by the transmitting link in the AAU structure when the target service is detected, so as to meet the number of receiving channels corresponding to the target service; the target service at least includes the perception service and / or the communication service with enhanced uplink coverage. By adopting the technical solution of the embodiment of the present invention, when the communication service including the perception service and / or the enhanced uplink coverage is detected, the receiving circuit arranged on the AAU structure also receives the first signal transmitted by the transmitting link in the AAU structure, so as to realize flexible expansion or reduction according to the needs of the perception service and / or the enhanced uplink coverage communication service, taking into account the number of perception channels, communication coverage and the cost of the whole station, and ensuring the functional performance of the receiving branch, and realizing the most simplified architecture and the lowest cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A schematic diagram of the AAU hardware architecture for a single-station communication perception scenario in related technologies;

[0049] Figure 2 A schematic diagram of a communication and sensing integrated base station provided in an embodiment of the present invention;

[0050] Figure 3 A schematic diagram of another communication and sensing integrated base station provided in an embodiment of the present invention;

[0051] Figure 4 A schematic diagram of another communication and sensing integrated base station provided in an embodiment of the present invention;

[0052] Figure 5 A schematic diagram of another communication and sensing integrated base station provided in an embodiment of the present invention;

[0053] Figure 6 A schematic diagram of another communication and sensing integrated base station provided in an embodiment of the present invention;

[0054] Figure 7 A flow chart of a communication and perception integration method provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0055] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the specific technical solution of the invention will be further described in detail below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0056] With the use of 5G medium and high frequency bands and the large-scale application of Massive Multiple Input Multiple Output (Massive MIMO) base stations, the frequencies of communication and perception have become feasible for integration in terms of performance. Wireless communication and radar systems are very close in terms of hardware architecture, channel characteristics, signal processing, etc. Wireless communication systems characterized by high frequency, large bandwidth, dense deployment of large-scale MIMO sites, and close collaboration have the potential to provide high-precision perception results. Using the same set of equipment to achieve communication and perception capabilities can reduce equipment costs, volume, power consumption, and improve spectrum utilization. Using communication networks to achieve low-latency, high-precision, seamless ubiquitous perception services, while improving the performance of communication systems based on perception information, can achieve mutual benefit, integration and common improvement.

[0057] The perception system has high requirements for latency and accuracy, that is, the perception signal must be able to be sent and received at the same time, and has high requirements for the isolation of the AAU hardware transmission and reception links. Figure 1 To understand, Figure 1 This is a schematic diagram of the AAU hardware architecture for a single-station communication perception scenario in the related technology; however, the existing base station AAU hardware transceiver isolation cannot meet the ability of a single station to simultaneously transmit and receive perception signals. Therefore, the existing communication equipment needs to reduce the transmission and reception specifications when used in perception scenarios. The equipment that is nT / nR during communication is reduced to n / 2T and n / 2R during perception. For example, for the conventional 64TR transceiver-shared RF unit in the mid-frequency band, when used as a perception system, in order to achieve transceiver isolation, it needs to be used as 32T and 32R, reducing the number of digital channels for perception.

[0058] The shortcomings of the existing technical solutions are analyzed as follows:

[0059] 1. The existing base station AAU hardware transceiver isolation cannot meet the ability of a single station to simultaneously send and receive sensing signals. Therefore, the transmission and reception specifications need to be reduced to meet the needs of the sensing scenario. The equipment that is nT / nR in conventional communication needs to be reduced to n / 2T and n / 2R in the sensing scenario. If the number of channels does not need to be halved, the number of transceiver channels needs to be doubled, which is costly and expensive.

[0060] 2. The existing base station channels and antenna arrays are symmetrical in transmission and reception. Due to the limited transmission capability of the terminal, there is a stubborn problem of limited uplink coverage;

[0061] 3. When designing a high-channel-count, large-array-scale station type for the purpose of increasing capacity or expanding coverage, it is necessary to accurately estimate the demand scenario. The RF unit can only be replaced after it is installed on the station, and the capacity cannot be flexibly expanded or reduced as needed.

[0062] Based on this, when communication services including perception services and / or uplink coverage enhancement are detected, the receiving circuit arranged on the AAU structure also receives the first signal transmitted by the transmitting link in the AAU structure, thereby ensuring the functional performance of the receiving branch and achieving the simplest architecture and lowest cost.

[0063] The embodiments of the present invention provide a communication and perception integrated base station, method and storage medium. Figure 2 A schematic diagram of the structure of a communication and perception integrated base station provided by an embodiment of the present invention; Figure 3 A schematic diagram of another communication and sensing integrated base station provided in an embodiment of the present invention; Figure 4 A schematic diagram of another communication and sensing integrated base station provided in an embodiment of the present invention; Figure 5 A schematic diagram of another communication and sensing integrated base station provided in an embodiment of the present invention; Figure 6 A schematic diagram of another communication and sensing integrated base station provided in an embodiment of the present invention; Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the base station 200 includes an active antenna unit AAU structure 201, a receiving circuit 202 and a controller 203 arranged on the AAU structure; the controller 203 is connected to the AAU structure 201 and the receiving circuit 202 respectively;

[0064] The controller 203 is used to control the receiving circuit 202 and the receiving link 201 in the AAU structure to respectively receive the first signal transmitted by the transmitting link in the AAU structure 201 when the target service is detected, so as to meet the number of receiving channels corresponding to the target service; the target service includes at least a perception service and / or a communication service with enhanced uplink coverage.

[0065] In this embodiment, the AAU structure 201 can be determined according to actual conditions and is not limited here. As an example, the AAU structure 201 can be a single-station communication perception scenario AAU hardware architecture, and the AAU hardware frame can include a TRX circuit, and the TRX circuit can include DIFR, RX, TX, power filter, antenna, etc.; in actual applications, the TRX circuit can also be called a TRX module, and RX can include RX1, RX2...RXn; TX can include TX1, TX2...TXn.

[0066] The receiving circuit 202 arranged on the AAU structure 201 can be understood as a newly added receiving circuit for supporting perception reception independently for perception services; the receiving circuit 202 can be spliced ​​or disassembled according to scene requirements; the receiving circuit 202 may include an RX' circuit; the RX' circuit may include RX1', RX2'...RXn'; in actual applications, the receiving circuit 202 may also be called a receiving module or an auxiliary receiving board; the AAU structure 201 may be called a main module; the interface between the receiving module and the main module may include a receiving signal, a synchronization signal and a power supply.

[0067] The controller 203 is connected to the AAU structure 201 and the receiving circuit 202 respectively; wherein, the connection can be determined according to actual conditions and is not limited here. As an example, the connection can be a wired connection or a wireless connection. The wireless connection can use short-range communication technology, such as Bluetooth, Zigbee, etc.; it can also use long-range communication technology, such as WiFi connection. The controller 203 can be any device with a control function.

[0068] The target service at least includes perception service and / or communication service with uplink coverage enhancement, which can be understood as the target service can at least include perception service; or, the target service can at least include communication service with uplink coverage enhancement; or, the target service can at least include perception service and communication service with uplink coverage enhancement; wherein, the perception service can be understood as communication perception service; the specific type of service of the target service can be determined based on actual conditions and is not limited here.

[0069] When the target service is detected, controlling the receiving circuit 202 and the receiving link in the AAU structure 201 to respectively receive the first signal transmitted by the transmitting link in the AAU structure 201 can be understood as controlling the receiving circuit 202 and the receiving link in the AAU structure 201 to respectively receive the first signal transmitted by the transmitting link in the AAU structure when it is detected that the target service at least includes a perception service and / or an uplink coverage enhanced communication service; wherein, the first signal can be determined based on actual conditions and is not limited here. As an example, the first signal can include a signal of a communication function or a signal of a perception function.

[0070] The embodiment of the present application aims at the fact that the hardware transceiver isolation of the base station AAU cannot meet the ability of a single station to simultaneously transmit and receive perception signals. Therefore, it is necessary to reduce the transmission and reception specifications to meet the needs of the perception scenario. The equipment that is nT / nR in conventional communication needs to be reduced to n / 2T and n / 2R when used in the perception scenario. If the number of channels does not need to be halved, the number of transceiver channels needs to be multiplied, which is a high cost. The existing AAU can be flexibly equipped with a receiving circuit that guarantees the functional performance of the receiving branch, and the architecture can be simplified to the lowest cost. A solution that takes into account both the maintenance of the number of interaceptive channels and the enhancement of the communication uplink coverage capability is achieved. At the same time, a flexible splicing solution is used to ensure that the solution can be flexibly expanded or reduced according to the needs of the perception service and the enhancement of uplink coverage, achieving a balance between the number of perception channels, communication coverage and the cost of the entire station. .

[0071] In an optional embodiment of the present invention, the receiving circuit 202 includes a first antenna 2021, a first filter 2022 and a first amplifier LNA 2023; the first filter 2022 is connected to the first antenna 2021 and the first LNA 2023 respectively; the first LNA 2023 is connected to the AAU structure 201;

[0072] The first antenna 2021 is used to receive the first signal;

[0073] The first filter 2022 is used to filter the interference signal in the first signal to obtain a second signal;

[0074] The first LNA 2023 is used to amplify the second signal to obtain a third signal;

[0075] The AAU structure 201 is used to receive the three signals to meet the number of receiving channels corresponding to the target service.

[0076] In an optional embodiment of the present invention, the AAU structure 201 includes a DIFR 2011 and a first TRX 2012; the DIFR 2011 is connected to the first TRX 2012; the receiving end of the first TRX 2012 is connected to one end of the first LNA 2012 through a first switch 2013; the transmitting end of the first TRX 2012 is connected to the other end of the first LNA 2012 through a second switch 2014;

[0077] The controller 203 is also used to control the first switch 2013 to be in an off state so that the receiving link in the first TRX 2012 is in an inoperative state; and control the second switch 2014 to be in an on state so that the receiving circuit 202 is in an operating state when it is detected that the target service is the perception service and the coverage distance required by the perception service is less than a preset threshold.

[0078] In this embodiment, the preset threshold value can be determined according to actual conditions and is not limited here. As an example, the preset threshold value can be 1KM. In practical applications, when it is detected that the target service is the perception service and the coverage distance required by the perception service is less than the preset threshold value, it can be understood as a scenario where the perception coverage distance requirement is general.

[0079] The first switch 2013 and the second switch 2014 can both be switches with on and off functions. In practical applications, the first switch can be recorded as switch 1, and the second switch can be recorded as switch 2.

[0080] As an example, in a general scenario with sensing coverage distance requirements, when the sensing function is implemented, switch 1 is disconnected and switch 2 is closed. Sensing reception is implemented using an independent receiving module, and the original communication RX link does not work, thereby achieving better analog link and antenna transmit and receive isolation.

[0081] In this embodiment, the number of perception channels can be increased and the transmit-receive isolation can be increased through flexible switching of switches. In the perception scenario, switch 1 is disconnected and switch 2 is closed. The perception receive signal takes the yellow path, increasing the isolation between the antenna and the RF hardware link, meeting the isolation requirements of the perception scenario while ensuring that the transmit-receive antenna specifications are not reduced.

[0082] In an optional embodiment of the present invention, the controller 203 is also used to control the first switch 2013 to be in an on state and the second switch 2014 to be in an off state when it is detected that the target service is the communication service, so that the signal received by the receiving link in the first TRX2012 and the signal received by the receiving circuit are superimposed.

[0083] In this embodiment, the signal received by the receiving link in the first TRX2012 and the signal received by the receiving circuit are superimposed according to actual conditions, which is not limited here. As an example, the signal received by the receiving link in the first TRX2012 and the signal received by the receiving circuit are superimposed for the signal received by the receiving link in the first TRX2012 and the signal received by the receiving circuit to be superimposed in phase. The in-phase superposition can be understood as the signal received by the receiving link in the first TRX2012 and the signal received by the receiving circuit to be superimposed in phase.

[0084] As an example, when the communication function is implemented, switch 1 is closed and switch 2 is open. Each channel corresponds to two analog RX links. The phase between the two channels is consistent and superimposed in phase through the analog phase shifter, thereby improving the uplink receiving capability of the communication function by 3dB.

[0085] In this embodiment, the demand for enhanced communication uplink coverage can be met through flexible switching of switches. In the communication scenario, switch 1 is closed and switch 2 is open. The communication receiving signal takes both the yellow and green paths, which increases the diversity gain by 3dB compared with the traditional solution.

[0086] In an optional embodiment of the present invention, the receiving circuit 202 further includes a phase shifter 2024; the base station 200 further includes a processor 204; one end of the phase shifter 2024 is connected to the first switch 2013; the other end of the phase shifter 2024 is connected to the first LNA 2012; the processor 204 is respectively connected to the receiving circuit 202 and the first TRX 2012;

[0087] The processor 204 is further configured to calibrate the signal received by the receiving link to obtain a first calibration value; and calibrate the signal received by the receiving circuit 202 to obtain a second calibration value; and determine a third calibration value based on the first calibration value and the second calibration value;

[0088] The phase shifter 2024 is used to store the third calibration value, and use the third calibration value to calibrate the signal received by the receiving circuit 202 to obtain a calibrated signal, so that the signal received by the receiving link in the first TRX2012 and the calibrated signal are superimposed in phase.

[0089] In this embodiment, the processor 204 may be any device having a processing function and is not limited here.

[0090] Calibrating the signal received by the receiving link to obtain the first calibration value can be understood as performing consistency calibration on the signal received by the receiving link to obtain the first calibration value; in practical applications, performing consistency calibration on the signal received by the receiving link to obtain the first calibration value can be understood as performing consistency calibration on the signals RX1, RX2…RXn received by the receiving link to obtain the first calibration value; wherein, the first calibration value can be recorded as φ 12 .

[0091] Calibrating the signal received by the receiving circuit 202 to obtain the second calibration value can be understood as performing consistency calibration on the signal received by the receiving circuit 202 to obtain the second calibration value; in practical applications, performing consistency calibration on the signal received by the receiving circuit 202 to obtain the second calibration value can be understood as performing consistency calibration on the signals RX1', RX2'...RXn' received by the receiving circuit 202 to obtain the second calibration value; wherein, the second calibration value can be recorded as φ 13 .

[0092] The specific determination process of determining the third calibration value based on the first calibration value and the second calibration value can be determined according to actual conditions. As an example, determining the third calibration value based on the first calibration value and the second calibration value can be as follows: 12 -φ 13 The difference is taken as the third calibration value.

[0093] Using the third calibration value to calibrate the signal received by the receiving circuit 202 to obtain a calibrated signal can be understood as using the third calibration value to calibrate the signal received by the receiving circuit to obtain a calibrated signal. The calibrated signal is the same as the signal received by the receiving link in the first TRX2012, which is convenient for in-phase superposition.

[0094] In practical applications, the consistency calibration between multiple channels can be performed according to the traditional communication module calibration scheme; then the phase difference between the two RX links of each transceiver unit is calibrated, that is, φ is calculated. 12 -φ 13 , and the difference is written into the analog phase shifter in the yellow link in the figure below, so that the two RX channels are superimposed in phase during communication, achieving diversity reception and enhancing uplink coverage capability.

[0095] In this embodiment, for a single-channel dual-path analog receiving path in a newly introduced communication scenario, an analog phase shifter is added, and a new calibration algorithm is introduced to achieve in-phase superposition, thereby meeting the long-distance coverage of uplink reception in the communication scenario.

[0096] In an optional embodiment of the present invention, the AAU structure 201 further includes a first power amplifier PA2015, a second amplifier LNA2016, a second filter 2017 and a second antenna 2018; one end of the PA2015 is connected to the transmitting end in the first TRX2012; the other end of the PA2015 is respectively connected to one end of the second LNA2016 and one end of the second filter 2017; the other end of the second LNA2016 is connected to the second switch 2014; the other end of the second filter 2017 is connected to the second antenna 2018;

[0097] The PA2015 is used to amplify the first signal to obtain an amplified signal;

[0098] The second antenna 2018 is used to receive the amplified signal;

[0099] The second filter 2017 is used to filter the interference signal in the amplified signal to obtain a filtered signal;

[0100] The second LNA 2016 is used to amplify the filtered signal to obtain a signal received by the receiving link in the first TRX 2012.

[0101] In an optional embodiment of the present invention, the AAU structure 201 includes a digital intermediate frequency receiver DIFR20111 and a second transceiver TRX20112; the receiving circuit 202 also includes a third transceiver TRX2025; the DIFR20111 is connected to the second TRX20112 and the third TRX2025 respectively;

[0102] The controller 204 is also used to control the receiving link in the third TRX2025 to receive the signal transmitted by the transmitting link in the third TRX2025 when it is detected that the target service is the perception service and the coverage distance required by the perception service is greater than or equal to a preset threshold.

[0103] In this embodiment, the preset threshold value can be determined according to actual conditions and is not limited here. As an example, the preset threshold value can be 1KM.

[0104] When it is detected that the target service is the perception service and the coverage distance required by the perception service is greater than or equal to a preset threshold, it can be understood as a scenario with high perception coverage distance requirements and high transceiver isolation requirements.

[0105] As an example, in scenarios with high requirements for sensing coverage distance and transceiver isolation, the transceiver isolation is limited by the transceiver transceiver channels. The signal returned from the sensing RX module is a digital signal. When sensing services are used, better transceiver channel isolation indicators can be obtained without the need for analog phase shifter calibration.

[0106] In an optional embodiment of the present invention, the third TRX2025 includes a modulator IQ and a converter ADC; the IQ is connected to the ADC; the IQ is connected to the first LNA2012;

[0107] The IQ is used to modulate the direction of the third signal to obtain a modulated signal;

[0108] The ADC is used to perform digital conversion on the modulated signal to obtain a converted digital signal;

[0109] The AAU structure 201 is also used to receive the digital signal to meet the number of receiving channels corresponding to the target service.

[0110] In an optional embodiment of the present invention, the AAU structure 201 further includes a second power amplifier PA20113, a third amplifier LNA20114, a third filter 20115 and a third antenna 20116; one end of the second PA20113 is connected to the transmitting end in the second TRX20112; the other end of the second PA20113 is respectively connected to one end of the third LNA20114 and one end of the third filter 20115; the other end of the third filter 20115 is connected to the third antenna 20116;

[0111] The third PA20113 is used to amplify the first signal to obtain an amplified signal;

[0112] The third antenna 20116 is used to receive the amplified signal;

[0113] The third filter 20115 is used to filter the interference signal in the amplified signal to obtain a filtered signal;

[0114] The third LNA 20114 is used to amplify the filtered signal to obtain a signal received by the receiving link in the third TRX.

[0115] In actual applications, for scenarios with high requirements for perception coverage distance and transceiver isolation, the degree of transceiver isolation is limited by the transceiver transceiver channels. The newly added receiving link includes an antenna, a single uplink low-power filter, an LNA, and an IQ modulator + ADC.

[0116] The signal returned from the sensing RX module is a digital signal, which can obtain better transmit and receive channel isolation indicators when sensing services, and there is no need to calibrate the analog phase shifter.

[0117] In this embodiment, an auxiliary receiving board is added, which is composed of a receiving chain including a antenna, a low noise amplifier, a phase shifter, an IQ demodulator and an ADC.

[0118] In an optional embodiment of the present invention, the receiving circuit 202 is detachably arranged on the AAU structure 201 .

[0119] In this embodiment, the detachable setting of the receiving circuit 202 and the AAU structure 201 can be understood as the receiving circuit 202 can be spliced ​​or disassembled according to scene requirements, for example, it can be spliced ​​on demand according to the requirements of perception services and communication coverage enhancement.

[0120] The phase shift circuit provided by the embodiment of the present invention introduces a phase shifting disk at the base of the relevant phase shifter, adjusts the total length of the phase shifting line in the phase shifting module, and increases the adjustable phase state of a single phase shifting module, so that a single digitally controlled phase shifter can simultaneously achieve a larger phase shifting range and real-time adjustability. Therefore, through the use of this new phase shifter, the antenna system can also make flexible adjustments according to specific coverage scenarios or corresponding emergency scenarios, and thus has the ability to adapt to multi-scenario applications.

[0121] For ease of understanding, an example is given here. In practical applications, the communication and perception integrated base station can be understood as a communication and perception AAU architecture, which can be flexibly installed on the existing AAU to ensure the functional performance of the receiving branch, and can achieve the simplest architecture and the lowest cost. At the same time, a new calibration algorithm solution is proposed for this architecture, which achieves a solution that takes into account both the number of interawareness channels and the enhancement of communication uplink coverage capabilities. At the same time, a flexible splicing solution is used to ensure that the solution can be flexibly expanded or reduced according to the needs of perception services and uplink coverage enhancement, achieving a balance between the number of perception channels, communication coverage and the cost of the entire station.

[0122] This application proposes a communication and perception AAU architecture and device. The overall architecture can be combined with Figure 2 To understand, on the basis of the original AAU, a new module is added for perception services to independently support perception reception, and the new module can be spliced ​​or disassembled according to scene requirements, and the interface between the main module must include receiving signals, synchronization signals and power supply.

[0123] In terms of specific circuit solutions, the newly added sensing RX' circuit can be divided into Solution A and Solution B, which can be used in different demand scenarios.

[0124] Solution A: The sensing coverage distance requirement is general. The transmit and receive isolation is limited by the analog link and the antenna array. The newly added receive link includes the antenna, a single uplink low-power filter, an LNA, and an analog phase shifter.

[0125] When the sensing function is realized, switch 1 is opened and switch 2 is closed. The sensing reception is realized by an independent receiving module, and the original communication RX link does not work, thereby achieving better isolation between the analog link and the antenna.

[0126] When the communication function is realized, switch 1 is closed and switch 2 is opened. Each channel corresponds to two analog RX links. The phase between the two channels is consistent and superimposed in phase through the analog phase shifter, thereby improving the uplink receiving capability of the communication function by 3dB.

[0127] At this time, it is necessary to introduce two new receiving channels and phase consistency between multiple different channels. The calibration scheme is as follows:

[0128] 1) First, the multi-channel consistency calibration is performed according to the traditional communication module calibration scheme;

[0129] Based on 1), the phase difference between the two RX links of each transceiver unit needs to be calibrated, that is, φ 12 -φ 13 , and the difference is written into the analog phase shifter in the yellow link in the figure below, so that the two RX channels are superimposed in phase during communication, achieving diversity reception and enhancing uplink coverage capability.

[0130] In this embodiment, on the one hand, an auxiliary receiving board consisting of an analog signal receiving link such as a antenna, a low-noise amplifier, and a phase shifter is added. The auxiliary receiving board can be spliced ​​on demand according to the needs of perception services and communication coverage enhancement; and the needs of improving the number of perception channels, increasing the transmit-receive isolation, and enhancing the communication uplink coverage can be met at the same time through flexible switching of switches: in the perception scenario, switch 1 is disconnected and switch 2 is closed, and the perception receiving signal takes the yellow path, increasing the isolation between the antenna and the RF hardware link, meeting the isolation requirements of the perception scenario, and ensuring that the specifications of the transmitting and receiving antennas are not reduced; in the communication scenario, switch 1 is closed and switch 2 is disconnected, and the communication receiving signal takes two paths at the same time, increasing 3dB diversity gain compared to the traditional solution; on the other hand, for the single-channel dual-path analog receiving path in the newly introduced communication scenario, an analog phase shifter is added, and a new calibration algorithm is introduced to achieve in-phase superposition, so as to meet the long-distance coverage of uplink reception in the communication scenario.

[0131] Solution B: The scenario requires high sensing coverage distance and high transmit-receive isolation. The transmit-receive isolation is limited by the transceiver transmit-receive channel. The newly added receive link includes an antenna, a single uplink low-power filter, an LNA, and an IQ modulator + ADC.

[0132] The signal returned from the sensing RX module is a digital signal, which can obtain better transmit and receive channel isolation indicators when sensing services, and there is no need to calibrate the analog phase shifter.

[0133] In this embodiment, by combining a fast switching switch and an adjustable phase shifting dial, the phase shifting range of the CNC phase shifter is improved while ensuring that the response speed can achieve real-time performance; and the adjustable phase shifting dial control form can adopt various methods such as electric control or manual pull-out control, which is easy to operate and improves efficiency.

[0134] In this embodiment, an auxiliary receiving board consisting of a receiving chain including a antenna, a low-noise amplifier, a phase shifter, an IQ demodulator and an ADC is added. The auxiliary receiving board can be spliced ​​on demand according to the requirements of sensing services and communication coverage enhancement.

[0135] The solution in this implementation has the following beneficial effects: First, the number of sensing channels is not reduced: it can be flexibly spliced ​​in combination with the needs of inter-sensory integration services, while meeting the isolation of sensing transmission and reception, solving the problem of reducing the number of sensing channels to half in the traditional solution, so that the number of channels is not reduced during sensing services; Second, the communication uplink coverage is enhanced: while meeting the requirement of not reducing the number of sensing channels, the communication uplink obtains a 3dB diversity gain. Third, according to different isolation requirements, two different uplink auxiliary boards are designed to meet the needs of increasing the number of sensing channels and enhancing the communication uplink coverage in different scenarios.

[0136] Based on the above-mentioned communication and perception integrated processing base station 200, the present invention also provides a communication and perception integrated processing method, which is applied to the above-mentioned communication and perception integrated processing base station 200. Figure 7 FIG. 1 is a schematic diagram of an implementation flow of a positioning method according to an embodiment of the present invention. Figure 7 As shown, the method includes:

[0137] Step 701, when the target service is detected, controls the receiving circuit in the base station and the receiving link in the AAU structure to respectively receive the first signal transmitted by the transmitting link in the AAU structure to meet the number of receiving channels corresponding to the target service; the target service includes at least perception service and / or uplink coverage enhanced communication service.

[0138] It should be noted that the target service at least includes perception service and / or communication service with uplink coverage enhancement, which can be understood as the target service can at least include perception service; or, the target service can at least include communication service with uplink coverage enhancement; or, the target service can at least include perception service and communication service with uplink coverage enhancement; wherein, the perception service can be understood as communication perception service; the specific type of service of the target service can be determined based on actual conditions and is not limited here.

[0139] When the target service is detected, controlling the receiving circuit in the base station and the receiving link in the AAU structure to respectively receive the first signal transmitted by the transmitting link in the AAU structure can be understood as controlling the receiving circuit in the base station and the receiving link in the AAU structure to respectively receive the first signal transmitted by the transmitting link in the AAU structure when it is detected that the target service at least includes the perception service and / or the uplink coverage enhanced communication service; wherein, the first signal can be determined according to actual conditions and is not limited here. As an example, the first signal can include a signal of a communication function or a signal of a perception function.

[0140] The embodiment of the present application is aimed at the fact that the hardware transceiver isolation of the base station AAU cannot meet the ability of a single station to simultaneously transmit and receive perception signals. Therefore, it is necessary to reduce the transmission and reception specifications to meet the needs of the perception scenario. The equipment that is nT / nR in conventional communication needs to be reduced to n / 2T and n / 2R when used in the perception scenario. If the number of channels does not need to be halved, the number of transceiver channels needs to be multiplied, which is a high cost problem. The existing AAU can be flexibly equipped with a receiving circuit that guarantees the functional performance of the receiving branch, and the architecture can be simplified to the lowest cost. A solution that takes into account both the maintenance of the number of interaceptive channels and the enhancement of the communication uplink coverage capability is achieved. At the same time, a flexible splicing solution is used to ensure that the solution can be flexibly expanded or reduced according to the needs of the perception service and the enhancement of uplink coverage, achieving a balance between the number of perception channels, communication coverage and the cost of the entire station.

[0141] In an optional embodiment of the present invention, the method further includes:

[0142] When it is detected that the target service is the perception service and the coverage distance required by the perception service is less than a preset threshold, the first switch in the base station is controlled to be in an off state so that the receiving link in the first TRX in the base station is in an inoperative state; and the second switch in the base station is controlled to be in an on state so that the receiving circuit is in an operating state.

[0143] It should be noted that, in this embodiment, the preset threshold value can be determined according to actual conditions and is not limited here. As an example, the preset threshold value can be 1KM. In practical applications, when it is detected that the target service is the perception service and the coverage distance required by the perception service is less than the preset threshold value, it can be understood as a scenario where the perception coverage distance requirement is general.

[0144] The first switch and the second switch can both be switches with on and off functions. In practical applications, the first switch can be recorded as switch 1, and the second switch can be recorded as switch 2.

[0145] As an example, in a general scenario with sensing coverage distance requirements, when the sensing function is implemented, switch 1 is disconnected and switch 2 is closed. Sensing reception is implemented using an independent receiving module, and the original communication RX link does not work, thereby achieving better analog link and antenna transmit and receive isolation.

[0146] In this embodiment, the number of perception channels can be increased and the transmit-receive isolation can be increased through flexible switching of switches. In the perception scenario, switch 1 is disconnected and switch 2 is closed. The perception receive signal takes the yellow path, increasing the isolation between the antenna and the RF hardware link, meeting the isolation requirements of the perception scenario while ensuring that the transmit-receive antenna specifications are not reduced.

[0147] In an optional embodiment of the present invention, the method further includes:

[0148] When it is detected that the target service is the communication service, the first switch in the base station is controlled to be in an on state and the second switch in the base station is controlled to be in an off state, so that the signal received by the receiving link in the first TRX in the base station and the signal received by the receiving circuit are superimposed.

[0149] It should be noted that, in this embodiment, the signal received by the receiving link in the first TRX and the signal received by the receiving circuit are superimposed according to actual conditions, and are not limited here. As an example, the signal received by the receiving link in the first TRX and the signal received by the receiving circuit are superimposed by in-phase superposition of the signal received by the receiving link in the first TRX and the signal received by the receiving circuit. The in-phase superposition can be understood as the superposition of the signal received by the receiving link in the first TRX and the signal received by the receiving circuit with consistent phases.

[0150] As an example, when the communication function is implemented, switch 1 is closed and switch 2 is open. Each channel corresponds to two analog RX links. The phase between the two channels is consistent and superimposed in phase through the analog phase shifter, thereby improving the uplink receiving capability of the communication function by 3dB.

[0151] In this embodiment, the demand for enhanced communication uplink coverage can be met through flexible switching of switches. In the communication scenario, switch 1 is closed and switch 2 is open, and the communication receiving signal takes the yellow and green paths at the same time, which increases the diversity gain by 3dB compared with the traditional solution.

[0152] An embodiment of the present invention further provides a computer-readable medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the above-mentioned method embodiment are implemented. The aforementioned storage medium includes: a mobile storage device, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0153] If the method steps in the above-mentioned system of the embodiment of the present invention are implemented in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, and the computer software product is stored in a storage medium. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a magnetic disk or an optical disk. In this way, the embodiment of the present invention is not limited to any specific combination of hardware and software.

[0154] A person skilled in the art can understand that: all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), disks or optical disks, etc. Various media that can store program codes.

[0155] The method disclosed in the above embodiment of the present invention can be applied to a processor or implemented by a processor. The processor may be an integrated circuit chip with signal processing capabilities. The steps of the method disclosed in the embodiment of the present invention can be directly embodied as a hardware decoding processor, or a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium, which is located in a memory. The processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0156] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A communication and sensing integrated base station, characterized in that: The base station comprises an active antenna unit AAU structure, a receiving circuit and a controller arranged on the AAU structure; the controller is connected to the AAU structure and the receiving circuit respectively; The controller is used to control the receiving circuit and the receiving link in the AAU structure to respectively receive the first signal transmitted by the transmitting link in the AAU structure when a target service is detected, so as to meet the number of receiving channels corresponding to the target service; the target service includes at least a perception service and / or an uplink coverage enhanced communication service.

2. The base station according to claim 1, characterized in that The receiving circuit includes a first antenna, a first filter and a first amplifier LNA; the first filter is connected to the first antenna and the first LNA respectively; the first LNA is connected to the AAU structure; The first antenna is used to receive the first signal; The first filter is used to filter the interference signal in the first signal to obtain a second signal; The first LNA is used to amplify the second signal to obtain a third signal; The AAU structure is used to receive the three signals to meet the number of receiving channels corresponding to the target service.

3. The base station according to claim 2, characterized in that The AAU structure includes a digital intermediate frequency receiver DIFR and a first transceiver TRX; the DIFR is connected to the first TRX; a receiving end in the first TRX is connected to one end of the first LNA through a first switch; and a transmitting end in the first TRX is connected to the other end of the first LNA through a second switch; The controller is further configured to control the first switch to be in an off state, so that the receiving link in the first TRX is in an inoperative state, when it is detected that the target service is the sensing service and the coverage distance required by the sensing service is less than a preset threshold; And controlling the second switch to be in an on state so that the receiving circuit is in an operating state.

4. The base station according to claim 3, characterized in that The controller is further configured to control the first switch to be in an on state and the second switch to be in an off state when detecting that the target service is the communication service, so that a signal received by the receiving link in the first TRX and a signal received by the receiving circuit are superimposed.

5. The base station according to claim 3, characterized in that: The receiving circuit further includes a phase shifter; the base station further includes a processor; one end of the phase shifter is connected to the first switch; the other end of the phase shifter is connected to the first LNA; the processor is connected to the receiving circuit and the first TRX respectively; The processor is further configured to calibrate the signal received by the receiving link to obtain a first calibration value; and calibrating the signal received by the receiving circuit to obtain a second calibration value; determining a third calibration value based on the first calibration value and the second calibration value; The phase shifter is used to store the third calibration value, and use the third calibration value to calibrate the signal received by the receiving circuit to obtain a calibrated signal, so that the signal received by the receiving link in the first TRX and the calibrated signal are superimposed in phase.

6. The base station according to claim 4, characterized in that The AAU structure further includes a first power amplifier PA, a second amplifier LNA, a second filter and a second antenna; one end of the PA is connected to the transmitting end in the first TRX; the other end of the PA is respectively connected to one end of the second LNA and one end of the second filter; the other end of the second LNA is connected to the second switch; the other end of the second filter is connected to the second antenna; The PA is used to amplify the first signal to obtain an amplified signal; The second antenna is used to receive the amplified signal; The second filter is used to filter the interference signal in the amplified signal to obtain a filtered signal; The second LNA is used to amplify the filtered signal to obtain a signal received by the receiving link in the first TRX.

7. The base station according to claim 2, characterized in that: The AAU structure includes a digital intermediate frequency receiver DIFR and a second transceiver TRX; the receiving circuit also includes a third transceiver TRX; the DIFR is connected to the second TRX and the third TRX respectively; The controller is further used to control the receiving link in the third TRX to receive the signal transmitted by the transmitting link in the third TRX when it is detected that the target service is the sensing service and the coverage distance required by the sensing service is greater than or equal to a preset threshold.

8. The base station according to claim 7, characterized in that: The third TRX includes a modulator IQ and a converter ADC; the IQ is connected to the ADC; the IQ is connected to the first LNA; The IQ is used to modulate the direction of the third signal to obtain a modulated signal; The ADC is used to perform digital conversion on the modulated signal to obtain a converted digital signal; The AAU structure is also used to receive the digital signal to meet the number of receiving channels corresponding to the target service.

9. The base station according to claim 7, characterized in that: The AAU structure further includes a second power amplifier PA, a third amplifier LNA, a third filter and a third antenna; one end of the second PA is connected to the transmitting end in the second TRX; the other end of the second PA is respectively connected to one end of the third LNA and one end of the third filter; the other end of the third filter is connected to the third antenna; The third PA is used to amplify the first signal to obtain an amplified signal; The third antenna is used to receive the amplified signal; The third filter is used to filter the interference signal in the amplified signal to obtain a filtered signal; The third LNA is used to amplify the filtered signal to obtain a signal received by the receiving link in the third TRX.

10. The base station according to any one of claims 1 to 7, characterized in that: The receiving circuit is detachably arranged on the AAU structure.

11. A communication and perception integrated processing method, characterized in that: Applicable to the base station according to any one of claims 1 to 10; the method comprising: When the target service is detected, the receiving circuit in the base station and the receiving link in the AAU structure are controlled to respectively receive the first signal transmitted by the transmitting link in the AAU structure to meet the number of receiving channels corresponding to the target service; the target service includes at least perception service and / or uplink coverage enhanced communication service.

12. The method according to claim 11, characterized in that The method further comprises: When it is detected that the target service is the perception service and the coverage distance required by the perception service is less than a preset threshold, the first switch in the base station is controlled to be in an off state so that the receiving link in the first TRX in the base station is in an inoperative state; and the second switch in the base station is controlled to be in an on state so that the receiving circuit is in an operating state.

13. The method according to claim 11, characterized in that The method further comprises: When it is detected that the target service is the communication service, the first switch in the base station is controlled to be in an on state and the second switch in the base station is controlled to be in an off state, so that the signal received by the receiving link in the first TRX in the base station and the signal received by the receiving circuit are superimposed.

14. The method according to claim 11, characterized in that The method further comprises: When it is detected that the target service is the perception service and the coverage distance required by the perception service is greater than or equal to a preset threshold, the receiving link in the third TRX in the base station is controlled to receive the signal transmitted by the transmitting link in the third TRX.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps in the communication and perception integrated processing method described in any one of claims 11 to 14 are implemented.

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