A communication and perception integrated base station, method and storage medium

Abstract

Embodiments of the present application provide a communication and perception integrated base station, method and storage medium, the base station comprising an active antenna unit (AAU) structure, a receiving circuit arranged on the AAU structure and a controller; the controller is connected with the AAU structure and the receiving circuit respectively; the controller is used for, in the case of detecting a target service, controlling a receiving link in the receiving circuit and the AAU structure to respectively receive a first signal transmitted by a transmitting link in the AAU structure, so as to meet a receiving channel number corresponding to the target service; the target service at least comprises a perception service and / or an uplink coverage enhanced communication service.

Description

TECHNICAL FIELD

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

[0002] The existing base station has the following problems:

[0003] 1. The active antenna unit (AAU) hardware transceiver isolation degree of the existing base station cannot meet the capability of simultaneously transmitting and receiving sensing signals by a single station, so the transmission and reception specifications need to be reduced to meet the needs of the sensing scenario. When in normal communication, the device is the number of transmission channels (nT) or the number of reception channels (nR), and when in the sensing scenario, it needs to be reduced to n / 2T, n / 2R. If the number of channels is not halved, the number of transceiver channels needs to be multiplied, which is high in cost and large in cost;

[0004] 2. The existing base station channel and antenna array 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 number and large-array scale station type for the purpose of capacity improvement or coverage expansion, accurate estimation needs to be made according to the demand scenario. The radio frequency unit can only be replaced after being installed on the station, and cannot be flexibly expanded or reduced in capacity as needed. SUMMARY

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

[0007] To achieve the above-mentioned purpose, the technical scheme of the embodiments of the present application is as follows:

[0008] The embodiments of the present application provide a communication and perception integrated base station, which comprises an AAU structure, a receiving circuit arranged on the AAU structure and a controller; the controller is connected with the AAU structure and the receiving circuit respectively;

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

[0010] In the above scheme, the receiving circuit comprises a first antenna, a first filter and a first low noise amplifier (LNA); the first filter is connected with the first antenna and the first LNA respectively; the first LNA is connected with the AAU structure.

[0011] the first antenna, configured to receive the first signal;

[0012] the first filter, configured to filter an interference signal in the first signal to obtain a second signal;

[0013] the first LNA, configured to amplify the second signal to obtain a third signal;

[0014] the AAU structure, configured to receive the three signals to meet a number of receiving channels corresponding to the target service.

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

[0016] The controller is further configured to, in a case where it is detected that the target service is the awareness service and a coverage distance required by the awareness service is less than a preset threshold, control the first switch to be in an off state, so that a 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 operative state.

[0017] In the above scheme, the controller is further configured to, in a case where it is detected that the target service is the communication service, control the first switch to be in an on state and the second switch to be in an off state, so that signals received by the receiving link in the first TRX and signals received by the receiving circuit are superimposed.

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

[0019] The processor is further configured to calibrate the signals received by the receiving link to obtain a first calibration value, and calibrate the signals 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 configured to store the third calibration value, calibrate a signal received by the receiving circuit using the third calibration value to obtain a calibrated signal, and superimpose the calibrated signal and a signal received by a receiving chain in the first TRX in phase.

[0021] In the above scheme, 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 a transmitting end in the first TRX; the other end of the PA is connected to one end of the second LNA and one end of the second filter, respectively; 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 configured to amplify the first signal to obtain an amplified signal.

[0023] The second antenna is configured to receive the amplified signal.

[0024] The second filter is configured to filter interference signals in the amplified signal to obtain a filtered signal.

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

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

[0027] The controller is further configured to, in a case where it is detected that the target service is the awareness service and a coverage distance required by the awareness service is greater than or equal to a preset threshold, control a receiving chain in the third TRX to receive a signal transmitted by a transmitting chain in the third TRX.

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

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

[0030] The ADC is configured to digitally convert the modulated signal to obtain a converted digital signal.

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

[0032] In the above scheme, the AAU structure further comprises a second power amplifier (PA), a third low noise amplifier (LNA), a third filter and a third antenna; one end of the second PA is connected with a transmitting end in the second TRX; the other end of the second PA is connected with one end of the third LNA and one end of the third filter respectively; the other end of the third filter is connected with the third antenna;

[0033] The third PA is configured to amplify the first signal to obtain an amplified signal.

[0034] The third antenna is configured to receive the amplified signal.

[0035] The third filter is configured to filter interference signals in the amplified signal to obtain a filtered signal.

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

[0037] In the above scheme, the receiving circuit is detachably arranged in the AAU structure.

[0038] The embodiment of the application provides a communication and perception integrated processing method, which is applied to the base station; the method comprises the following steps:

[0039] In the case that the target service is detected, the receiving circuit in the base station and the receiving link in the AAU structure are controlled to receive the first signal transmitted by the transmitting link in the AAU structure, so as to meet the receiving channel number corresponding to the target service; the target service at least comprises a perception service and / or an uplink coverage enhanced communication service.

[0040] In the above scheme, the method further comprises the following steps:

[0041] In the case that the target service is the perception service and the required coverage distance of 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 a non-working state; and the second switch in the base station is controlled to be in an on state, so that the receiving circuit is in a working state.

[0042] In the above scheme, the method further comprises the following steps:

[0043] In a case where it is detected that the target service is the communication service, the first switch in the base station is controlled to be in a conductive state and the second switch in the base station is controlled to be in a non-conductive 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 scheme, the method further comprises:

[0045] In a case where it is detected that the target service is the perception service and the required coverage distance of the perception service is greater than or equal to a preset threshold, the receiving link in the third TRX receives the signal transmitted by the transmitting link in the third TRX.

[0046] The application further provides a storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement any step of the method.

[0047] The embodiment of the application provides a communication and perception integrated base station, a method and a storage medium, the base station comprises an AAU structure, a receiving circuit arranged on the AAU structure and a controller; the controller is connected with the AAU structure and the receiving circuit respectively; the controller is used for controlling the receiving circuit and the receiving link in the AAU structure to receive a first signal transmitted by a transmitting link in the AAU structure respectively in a case where 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 perception service and / or an uplink coverage enhanced communication service. By adopting the technical scheme of the embodiment of the application, in a case where the perception service and / or the uplink coverage enhanced communication service is detected, the receiving circuit arranged on the AAU structure also receives the first signal transmitted by the transmitting link in the AAU structure, flexible expansion or reduction is realized according to the requirements of the perception service and / or the uplink coverage enhanced communication service, the number of perception channels, communication coverage and the cost of the whole station are considered, the function performance of the receiving branch is ensured, the architecture is simplified and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 It is a single station communication and perception scene AAU hardware architecture schematic diagram in the related art;

[0049] Figure 2 It is a communication and perception integrated base station schematic diagram provided by the embodiment of the application;

[0050] Figure 3 It is another communication and perception integrated base station schematic diagram provided by the embodiment of the application;

[0051] Figure 4 It is another communication and perception integrated base station schematic diagram provided by the embodiment of the application;

[0052] Figure 5 A schematic diagram of another communication and perception integrated base station provided by an embodiment of the present application;

[0053] Figure 6 A schematic diagram of another communication and perception integrated base station provided by an embodiment of the present application;

[0054] Figure 7 A flowchart of a communication and perception integrated method provided by an embodiment of the present application. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions of the present application will be further described in detail below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0056] With the use of high-frequency bands in 5G and the large-scale application of Massive Multiple Input Multiple Output (Massive MIMO) base stations, the frequency of communication and perception has the feasibility of integration in terms of performance. Wireless communication and radar systems are very close in terms of hardware architecture, channel characteristics, and signal processing. Wireless communication systems characterized by high-frequency, large-bandwidth, large-scale MIMO site dense deployment, and close cooperation have the potential to provide high-precision perception results. Using the same set of equipment to achieve communication and perception capabilities can reduce equipment cost, size, and power consumption, and improve spectrum utilization. Using a communication network to achieve low-latency, high-precision, seamless ubiquitous perception services, while improving communication system performance based on perception information, can achieve mutual benefit and integration.

[0057] The perception system has high requirements for latency and accuracy, i.e., the perception signal must have the ability to transmit and receive simultaneously, and has high requirements for the isolation of the AAU hardware transmit and receive chain. It can be understood in combination with Figure 1 Figure 1 The AAU hardware architecture diagram for the single-station communication and perception scenario in the related art; however, the existing base station AAU hardware transceiver isolation cannot meet the single-station simultaneous transmission and reception of perception signals, so the existing communication equipment needs to reduce the transmission and reception specifications to be used in the perception scenario, and the equipment is nT / nR in communication and n / 2T, n / 2R in perception. For example, for a conventional intermediate frequency band 64TR transceiver shared radio frequency unit, as a perception system application, to achieve transceiver isolation, it needs to be applied as 32T and 32R, which reduces the number of perception digital channels.

[0058] The disadvantages of the prior art solution are analyzed as follows: ​

[0059] 1. The existing base station AAU hardware transmit / receive isolation cannot meet the capability of a single station to simultaneously transmit and receive sensing signals. Therefore, it is necessary to reduce the transmit and receive specifications to meet the requirements of sensing scenarios. Equipment that is nT / nR in conventional communication needs to be reduced to n / 2T and n / 2R for use in sensing scenarios. If the number of channels is not halved, the number of transmit and receive channels needs to be multiplied, which is costly and costly.

[0060] 2. Existing base station channels and antenna arrays are symmetrical in transmission and reception. Due to the limited transmission capability of terminals, there is a persistent problem of limited uplink coverage.

[0061] 3. When designing a high-channel-count, large-scale station type to achieve capacity improvement or coverage expansion, it is necessary to accurately estimate the demand scenario. Once the radio frequency unit is installed on the site, it can only be replaced and cannot be flexibly expanded or reduced as needed.

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

[0063] This invention provides an integrated communication and sensing base station, method, and storage medium. Figure 2 This is a schematic diagram of the structure of an integrated communication and sensing base station provided in an embodiment of the present invention; Figure 3 A schematic diagram of another integrated communication and sensing base station provided in an embodiment of the present invention; Figure 4 A schematic diagram of another integrated communication and sensing base station provided in an embodiment of the present invention; Figure 5 A schematic diagram of another integrated communication and sensing base station provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of another integrated communication and sensing base station provided in an embodiment of the present invention; as shown below. 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 disposed on the AAU structure, and a controller 203; the controller 203 is connected to the AAU structure 201 and the receiving circuit 202 respectively.

[0064] The controller 203 is configured to control the receiving circuit 202 and the receiving link in the AAU structure 201 to receive the first signal transmitted by the transmitting link in the AAU structure 201 to meet the number of receiving channels corresponding to the target service in the case of detecting the target service. The target service at least includes a sensing service and / or an uplink coverage enhanced communication service.

[0065] In the embodiment, the AAU structure 201 can be determined according to actual conditions, which is not limited herein. As an example, the AAU structure 201 can be a single station communication sensing scene AAU hardware architecture, which can include a TRX circuit, the TRX circuit can include a DIFR, an RX, a TX, a power filter, an antenna, etc. In actual application, the TRX circuit can also be referred to as a TRX module, the RX can include RX1, RX2…RXn, and the TX can include TX1, TX2…TXn.

[0066] The receiving circuit 202 arranged on the AAU structure 201 can be understood as adding a receiving circuit for supporting sensing reception of the sensing service alone. The receiving circuit 202 can be spliced or disassembled according to scene requirements. The receiving circuit 202 can include an RX' circuit, the RX' circuit can include RX1', RX2'…RXn', and in actual application, the receiving circuit 202 can also be referred to as a receiving module or an auxiliary receiving board. The AAU structure 201 can be referred to as a main module. The interface between the receiving module and the main module can include a receiving signal, a synchronization signal and a power supply.

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

[0068] The target service at least including a sensing service and / or an uplink coverage enhanced communication service can be understood as that the target service can at least include a sensing service, or the target service can at least include an uplink coverage enhanced communication service, or the target service can at least include a sensing service and an uplink coverage enhanced communication service. The sensing service can be understood as a communication sensing service. The specific type of the target service can be determined according to actual conditions, which is not limited herein.

[0069] In the case of detecting the target service, controlling the receiving circuit 202 and the receiving link in the AAU structure 201 to receive the first signal transmitted by the transmitting link in the AAU structure 201 can be understood as, in the case of detecting the target service including at least the sensing service and / or the communication service of uplink coverage enhancement, controlling the receiving circuit 202 and the receiving link in the AAU structure 201 to receive the first signal transmitted by the transmitting link in the AAU structure; wherein the first signal can be determined according to the actual situation, which is not limited here, and as an example, the first signal can include a signal of a communication function or a signal of a sensing function.

[0070] The embodiment of the application aims at the fact that the base station AAU hardware transceiver isolation degree cannot meet the capability of simultaneously transmitting and receiving sensing signals by a single station, so the transmitting and receiving specifications need to be reduced to meet the demand of the sensing scene, and the device is nT / nR in the conventional communication, and needs to be reduced to n / 2T, n / 2R in the sensing scene. If the channel number is not halved, the transceiver channel number needs to be multiplied and added, which is a problem of high cost and high price. The receiving circuit that guarantees the receiving branch function performance is flexibly added on the existing AAU, and the architecture is simplified and the cost is minimized. The scheme of considering the non-reduction of sensing channel number and the enhancement of communication uplink coverage capability is realized, and the sensing channel number, communication coverage and station cost are considered at the same time. The scheme can be flexibly expanded or reduced according to the sensing service and uplink coverage enhancement demand through the elastic splicing scheme, and the sensing channel number, communication coverage and station cost are considered.

[0071] In an optional embodiment of the application, 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 with the first antenna 2021 and the first LNA 2023 respectively; and the first LNA 2023 is connected with the AAU structure 201.

[0072] The first antenna 2021 is configured to receive the first signal.

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

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

[0075] The AAU structure 201 is configured to receive the third signal to meet the receiving channel number corresponding to the target service.

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

[0077] The controller 203 is further configured to, in a case where it is detected that the target service is the sensing service and the sensing service requires a coverage distance less than a preset threshold, control the first switch 2013 to be in an off state so as to make the receiving link in the first TRX 2012 in an inoperative state, and control the second switch 2014 to be in an on state so as to make the receiving circuit 202 in an operative state.

[0078] In the embodiment, the preset threshold can be determined according to actual conditions, which is not limited herein. As an example, the preset threshold can be 1 KM. In actual application, the case where it is detected that the target service is the sensing service and the sensing service requires a coverage distance less than a preset threshold can be understood as a scenario where the sensing 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 actual application, the first switch can be denoted as switch 1, and the second switch can be denoted as switch 2.

[0080] As an example, in the scenario where the sensing coverage distance requirement is general, when the sensing function is implemented, the switch 1 is off, the switch 2 is closed, the sensing reception is implemented by using an independent receiving module, and the original communication RX link is inoperative, so that better isolation between the analog link and the antenna is achieved.

[0081] In the embodiment, the switch can be flexibly switched to meet the sensing requirement of increasing the number of channels and increasing the transmission isolation. In the sensing scenario, the switch 1 is off, the switch 2 is closed, the sensing reception signal passes through the yellow path, the isolation degree of the antenna and the radio frequency hardware link is increased, the requirement of the isolation degree in the sensing scenario is met, and the specifications of the transmitting and receiving antennas are ensured.

[0082] In an optional embodiment of the present application, the controller 203 is further configured to, in a case where it is detected that the target service is the communication service, control the first switch 2013 to be in an on state and the second switch 2014 to be in an off state, so as to make the signal received by the receiving link in the first TRX 2012 and the signal received by the receiving circuit superimposed.

[0083] In the embodiment, superposition of the signal received by the receiving link in the first TRX 2012 and the signal received by the receiving circuit can be determined according to actual conditions, which is not limited herein. As an example, the superposition of the signal received by the receiving link in the first TRX 2012 and the signal received by the receiving circuit can be in-phase superposition of the signal received by the receiving link in the first TRX 2012 and the signal received by the receiving circuit. Wherein, the in-phase superposition can be understood as the signal received by the receiving link in the first TRX 2012 and the signal received by the receiving circuit are superimposed in phase.

[0084] As an example, when the communication function is implemented, the switch 1 is closed, the switch 2 is opened, each channel corresponds to two analog RX links, the phase consistency between the two channels is realized through the analog phase shifter, and the in-phase superposition is realized, so that the uplink receiving capability of the communication function is improved by 3dB.

[0085] In the embodiment, the demand of communication uplink coverage enhancement can be met through flexible switching of the switch. In the communication scenario, the switch 1 is closed, the switch 2 is opened, the communication receiving signal passes through the yellow and green paths at the same time, and compared with the traditional scheme, the diversity gain is increased by 3dB;

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

[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 configured to store the third calibration value, calibrate the signal received by the receiving circuit 202 by using the third calibration value to obtain a calibrated signal, so that the signal received by the receiving link in the first TRX 2012 and the calibrated signal are superimposed in phase.

[0089] In the embodiment, the processor 204 can be any device with processing function, which is not limited herein.

[0090] The calibration of the signal received by the receiving link to obtain the first calibration value can be understood as consistent calibration of the signal received by the receiving link to obtain the first calibration value; in actual application, the calibration of the signal received by the receiving link to obtain the first calibration value can be understood as consistent calibration of the signals RX1, RX2…RXn received by the receiving link to obtain the first calibration value; wherein the first calibration value can be denoted as 12 .

[0091] The calibration of the signal received by the receiving circuit 202 to obtain the second calibration value can be understood as consistent calibration of the signal received by the receiving circuit 202 to obtain the second calibration value; in actual application, the calibration of the signal received by the receiving circuit 202 to obtain the second calibration value can be understood as consistent calibration of the signals RX1', RX2'…RXn' received by the receiving circuit 202 to obtain the second calibration value; wherein the second calibration value can be denoted as 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 to take the difference between 12 -φ 13 as the third calibration value.

[0093] Calibration of the signal received by the receiving circuit 202 using the third calibration value to obtain the calibrated signal can be understood as calibration of the signal received by the receiving circuit using the third calibration value to obtain the calibrated signal, which is the same as the signal received by the receiving link in the first TRX2012, facilitating in-phase superposition.

[0094] In actual application, multi-channel consistency calibration 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, i.e. calculating 12 -φ 13 , and the difference is written into the analog phase shifter in the yellow link in the following figure, so that the two RXs are in-phase superimposed during communication, realizing diversity reception and enhancing the uplink coverage capability.

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

[0096] In an optional embodiment of the present application, the AAU structure 201 further comprises a first power amplifier PA 2015, a second amplifier LNA 2016, a second filter 2017 and a second antenna 2018; one end of the PA 2015 is connected with a transmitting end in the first TRX 2012; the other end of the PA 2015 is connected with one end of the second LNA 2016 and one end of the second filter 2017 respectively; the other end of the second LNA 2016 is connected with the second switch 2014; the other end of the second filter 2017 is connected with the second antenna 2018;

[0097] The PA 2015 is configured to amplify the first signal to obtain an amplified signal.

[0098] The second antenna 2018 is configured to receive the amplified signal.

[0099] The second filter 2017 is configured to filter interference signals in the amplified signal to obtain a filtered signal.

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

[0101] In an optional embodiment of the present application, the AAU structure 201 comprises a digital intermediate frequency receiver DIFR 20111 and a second transceiver TRX 20112; the receiving circuit 202 further comprises a third transceiver TRX 2025; the DIFR 20111 is connected with the second TRX 20112 and the third TRX 2025 respectively;

[0102] The controller 204 is further configured to control a receiving link in the third TRX 2025 to receive a signal transmitted by a transmitting link in the third TRX 2025 when it is detected that the target service is the awareness service and a coverage distance required by the awareness service is greater than or equal to a preset threshold.

[0103] In the embodiment, the preset threshold can be determined according to actual conditions, which is not limited herein, and as an example, the preset threshold can be 1KM.

[0104] It can be understood that the scenario that the target service is the awareness service and the coverage distance required by the awareness service is greater than or equal to the preset threshold is a scenario that awareness coverage distance requirement is high and transceiver isolation requirement is high.

[0105] As an example, in a scenario where the sensing coverage distance requirement is high and the transceiver isolation requirement is high, the transceiver isolation is limited between the transceiver transmission channels, the signal returned from the sensing RX module is a digital signal, the sensing service can obtain a better transceiver channel isolation index, and analog phase shifter calibration is not required.

[0106] In an optional embodiment of the present application, the third TRX 2025 includes a modulator IQ and a converter ADC; the IQ is connected to the ADC; the IQ is connected to the first LNA 2012;

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

[0108] The ADC is configured to digitally convert the modulated signal to obtain a converted digital signal.

[0109] The AAU structure 201 is further configured 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 application, the AAU structure 201 further includes a second power amplifier PA 20113, a third amplifier LNA 20114, a third filter 20115, and a third antenna 20116; one end of the second PA 20113 is connected to the transmitting end in the second TRX 20112; the other end of the second PA 20113 is connected to one end of the third LNA 20114 and one end of the third filter 20115, respectively; the other end of the third filter 20115 is connected to the third antenna 20116;

[0111] The third PA 20113 is configured to amplify the first signal to obtain an amplified signal.

[0112] The third antenna 20116 is configured to receive the amplified signal.

[0113] The third filter 20115 is configured to filter interference signals in the amplified signal to obtain a filtered signal.

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

[0115] In actual application, for a scenario where the sensing coverage distance requirement is high and the transceiver isolation requirement is high, the transceiver isolation is limited between the transceiver transmission channels, a new receiving link includes an antenna, a single-uplink low-power filter, an LNA, and an IQ modulator + ADC.

[0116] The signal returned from the perception RX module is a digital signal, better transceiver channel isolation index can be obtained during the perception service, and analog phase shifter calibration is not required.

[0117] In the embodiment, an auxiliary receiving board composed of a sky surface, a low-noise amplifier, a phase shifter, an IQ demodulator, and an ADC, etc. is added.

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

[0119] In the embodiment, the receiving circuit 202 detachably arranged with the AAU structure 201 can be understood as that the receiving circuit 202 can be spliced or detached according to the scene requirement, for example, the receiving circuit 202 can be spliced according to the perception service and the communication coverage enhancement requirement.

[0120] The phase shifter circuit provided in the embodiment of the application adjusts the total length of the phase shift line in the phase shift module by introducing a phase shift turntable at the base of the related phase shifter, increases the phase adjustment state of a single phase shift module, so that a single digital control phase shifter can realize a larger phase shift range and real-time adjustability. Thus, through the use of the new phase shifter, the antenna system can also make flexible adjustment according to the specific coverage scene or the corresponding emergency scene, and further has the ability to adapt to multiple scene applications.

[0121] For the convenience of understanding, it is exemplarily illustrated herein that the communication and perception integrated base station can be understood as a communication and perception AAU architecture, the receiving branch function performance is flexibly added on the existing AAU, the architecture is most simplified, and the cost is lowest. Meanwhile, a new calibration algorithm scheme is proposed for the architecture, the scheme realizes the consideration of the non-reduction of the number of perception channels and the enhancement of the communication uplink coverage capability, and through the elastic splicing scheme, the scheme can be flexibly expanded or reduced according to the perception service and the uplink coverage enhancement requirement, the perception channel number, the communication coverage, and the whole station cost are considered.

[0122] The application provides a communication and perception AAU architecture and device, the overall architecture can be combined with Figure 2 It can be understood that on the basis of the original AAU, a module for supporting perception reception of the perception service alone is newly added, and the newly added module can be spliced or detached according to the scene requirement, and the interface between the main module needs to include a receiving signal, a synchronization signal, and a power supply.

[0123] On the specific circuit scheme, the newly added perception RX' circuit can be divided into scheme A and scheme B, and can be used for different requirement scenes.

[0124] Scheme A: the general scenario of the perception coverage distance requirement, the transceiver isolation is limited to the analog link and the antenna array, the new receiving link includes antenna, single uplink low-power filter, LNA and analog phase shifter

[0125] When the perception function is implemented, switch 1 is open and switch 2 is closed, the perception reception is implemented by using an independent receiving module, and the original communication RX link is not working, so that the transceiver isolation between the analog link and the antenna is better.

[0126] When the communication function is implemented, switch 1 is closed and switch 2 is open, two analog RX links are corresponding to each channel, the phase consistency between the two channels is implemented by using an analog phase shifter, and the in-phase superposition is implemented, so that the uplink receiving capacity of the communication function is improved by 3dB.

[0127] At this time, a new two-way receiving channel and the phase consistency between multiple different channels need to be introduced, and the calibration scheme is as follows:

[0128] 1) First, the consistency calibration between multiple channels is performed according to the traditional communication module calibration scheme;

[0129] On the basis of 1), the phase difference between the two RX links of each transceiver unit needs to be calibrated, that is, φ 12 -φ 13 The difference is written into the analog phase shifter in the yellow link in the following figure, so that the two RX links are in phase during communication, the diversity reception is implemented, and the uplink coverage capacity is enhanced.

[0130] In this embodiment, on the one hand, an auxiliary receiving board composed of a radome, a low-noise amplifier and a phase shifter is added, and the auxiliary receiving board can be spliced according to the perception business and the communication coverage enhancement demand; and the switch can be flexibly switched to meet the demand of increasing the number of perception channels, increasing the transceiver isolation and enhancing the uplink coverage of communication: in the perception scene, switch 1 is open and switch 2 is closed, the perception receiving signal passes through the yellow path, the isolation degree of the radome and the radio frequency hardware link is increased, the isolation degree requirement of the perception scene is met, and the transceiver antenna specification is ensured; in the communication scene, switch 1 is closed and switch 2 is open, the communication receiving signal passes through two paths at the same time, and the diversity gain of 3dB is increased compared with the traditional scheme; on the other hand, for the newly introduced single-channel double-path analog receiving path in the communication scene, an analog phase shifter is added, and a new calibration algorithm is introduced, so that the in-phase superposition is implemented, and the uplink receiving long-distance coverage is met in the communication scene.

[0131] Scheme B: the scenario of high perception coverage distance requirement and high transceiver isolation requirement, the transceiver isolation is limited to the transceiver channel, the new receiving link includes antenna, single uplink low-power filter, LNA and IQ modulator + ADC.

[0132] The signal returned from the perception RX module is a digital signal, better transceiver channel isolation index can be obtained during the perception service, and analog phase shifter calibration is not required.

[0133] In the embodiment, the combination of the fast switching switch and the controllable phase shift turntable can improve the phase shift range of the numerical control phase shifter under the premise of ensuring response speed and realizing real-time performance; and the controllable phase shift turntable control form can adopt various methods such as electric control or manual pull control, which is convenient to operate and improves efficiency.

[0134] The embodiment adds an auxiliary receiving board composed of a sky surface, a low-noise amplifier, a phase shifter, an IQ demodulator and an ADC receiving link, and the auxiliary receiving board can be spliced as needed according to the perception service and communication coverage enhancement requirements.

[0135] The scheme in the embodiment has the following beneficial effects: first, the number of perception channels is not reduced: the perception channel number is not reduced during the perception service, the problem that the number of perception channels is reduced to half in the traditional scheme is solved, and the channel number is not reduced during the perception service; second, communication uplink coverage enhancement: while meeting the requirement that the number of perception channels is not reduced, 3dB diversity gain is obtained for the communication uplink; third, two different uplink auxiliary boards are designed for different isolation requirements to meet the requirements of increasing the number of perception 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 application also provides a communication and perception integrated processing method applied to the above-mentioned communication and perception integrated processing base station 200, Figure 7 The implementation flowchart of the positioning method of the embodiment of the application is shown in Figure 7 As shown in the figure, the method comprises:

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

[0138] It should be noted that the target service at least includes a perception service and / or an uplink coverage enhanced communication service can be understood as the target service can at least include a perception service; or the target service can at least include an uplink coverage enhanced communication service; or the target service can at least include a perception service and an uplink coverage enhanced communication service; wherein the perception service can be understood as a communication perception service; the specific type of the target service can be determined according to the actual situation, which is not limited here.

[0139] In the case of detecting the target service, controlling the receiving circuit in the base station and the receiving link in the AAU structure to receive the first signal transmitted by the transmitting link in the AAU structure can be understood as, in the case of detecting the target service including at least the sensing service and / or the communication service of uplink coverage enhancement, controlling the receiving circuit in the base station and the receiving link in the AAU structure to receive the first signal transmitted by the transmitting link in the AAU structure; wherein the first signal can be determined according to actual conditions, which is not limited herein, and as an example, the first signal can include a signal of a communication function or a signal of a sensing function.

[0140] The embodiments of the present application aim at that the AAU hardware transceiver isolation degree of the base station cannot meet the capability of simultaneously transmitting and receiving sensing signals, and therefore the transmitting and receiving specifications need to be reduced to meet the demand of the sensing scene. The device is nT / nR in the conventional communication, and needs to be reduced to n / 2T, n / 2R in the sensing scene. If the channel number is not halved, the number of transceiving channels needs to be doubled, which is a problem of high cost and large cost. The receiving circuit that guarantees the function performance of the receiving branch is flexibly added on the existing AAU, and the architecture is simplified and the cost is minimized. The scheme of considering the non-reduction of sensing channel number and the enhancement of communication uplink coverage capability is realized, and the sensing channel number, communication coverage and station cost are considered.

[0141] In an optional embodiment of the present application, the method further comprises:

[0142] In the case of detecting that the target service is the sensing service and the coverage distance required by the sensing service is less than a preset threshold, controlling the first switch in the base station 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 controlling the second switch in the base station to be in an on state, so that the receiving circuit is in an operative state.

[0143] It should be noted that in the present embodiment, the preset threshold can be determined according to actual conditions, which is not limited herein. As an example, the preset threshold can be 1KM. In actual application, in the case of detecting that the target service is the sensing service and the coverage distance required by the sensing service is less than a preset threshold, it can be understood as a scene in which the sensing coverage distance requirement is general.

[0144] The first switch and the second switch can both be switches with on and off functions. In actual application, the first switch can be denoted as switch 1, and the second switch can be denoted as switch 2.

[0145] As an example, the general scenario of the perception coverage distance requirement is that when the perception function is implemented, switch 1 is disconnected, switch 2 is connected, the perception reception is implemented by using an independent receiving module, and the original communication RX link is not in operation, so that better transmission and reception isolation between the analog link and the antenna is achieved.

[0146] In the embodiment, the number of perception promotion channels and the transmission and reception isolation can be satisfied by flexible switching of the switch, switch 1 is disconnected, switch 2 is connected, the perception reception signal passes through the yellow path, the isolation degree of the antenna surface and the radio frequency hardware link is increased, the requirement of the isolation degree in the perception scenario is satisfied, and the specification of the transmission and reception antenna is ensured.

[0147] In an optional embodiment of the application, the method further comprises:

[0148] In the case that the target service is detected as the communication service, the first switch in the base station is controlled to be in a conduction state, and the second switch in the base station is controlled to be in a disconnection 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 the embodiment, the superimposition of the signal received by the receiving link in the first TRX and the signal received by the receiving circuit can be determined according to actual conditions, which is not limited herein. As an example, the superimposition of the signal received by the receiving link in the first TRX and the signal received by the receiving circuit can be in-phase superimposition of the signal received by the receiving link in the first TRX and the signal received by the receiving circuit. Wherein, the in-phase superimposition can be understood as the superimposition 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 connected, switch 2 is disconnected, two analog RX links are corresponding to each channel, the phase consistency between the two channels is achieved by using an analog phase shifter, and in-phase superimposition is achieved, so that the uplink reception capability of the communication function is improved by 3dB.

[0151] In the embodiment, the requirement of the communication uplink coverage enhancement can be satisfied by flexible switching of the switch, switch 1 is connected, switch 2 is disconnected, the communication reception signal passes through the yellow and green paths at the same time, and compared with the traditional scheme, 3dB diversity gain is increased.

[0152] The embodiment of the present application further provides a computer readable medium, which stores a computer program, and the computer program is executed by a processor to realize the steps of the method embodiment.

[0153] The method steps in the system of the embodiment of the present application can be stored in a computer readable storage medium if the method steps are realized in the form of software function modules and sold or used as independent products. Based on this understanding, the technical solutions of the embodiment of the present application can be embodied in the form of a software product, and the computer software product is stored in a storage medium. The storage medium includes a U disk, a mobile hard disk, a read-only memory (ROM), a magnetic disk or an optical disk, and various media that can store program codes. Thus, the embodiment of the present application is not limited to any specific combination of hardware and software.

[0154] Those skilled in the art can understand that all or part of the steps of the method embodiment can be completed by program instruction related hardware, and the program can be stored in a computer readable storage medium. When the program is executed, the steps of the method embodiment are executed. The 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 various media that can store program codes.

[0155] The method disclosed in the embodiment of the present application can be applied to a processor or implemented by the processor. The processor can be an integrated circuit chip with a signal processing capability. The steps of the method disclosed in the embodiment of the present application can be directly embodied in a hardware decoding processor for execution, or executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium, and the storage medium is located in a memory. The processor reads the information in the memory and combines the hardware to complete the steps of the method.

[0156] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication and sensing integrated base station, characterized by, The base station comprises an active antenna unit (AAU) structure, a receiving circuit arranged on the AAU structure, and a controller; the controller is connected with the AAU structure and the receiving circuit respectively; the receiving circuit comprises a first antenna, a first filter, and a first low noise amplifier (LNA); the first filter is connected with the first antenna and the first LNA respectively; the first LNA is connected with the AAU structure; The controller is configured to, in a case where a target service is detected, control a receiving link in the receiving circuit and the AAU structure to respectively receive a first signal transmitted by a transmitting link in the AAU structure, so as to satisfy a number of receiving channels corresponding to the target service. The target service at least comprises a sensing service and / or a communication service of uplink coverage enhancement. The first antenna is configured to receive the first signal. The first filter is configured to filter an interference signal in the first signal to obtain a second signal. The first LNA is configured to amplify the second signal to obtain a third signal. The AAU structure is configured to receive the third signal, so as to satisfy the number of receiving channels corresponding to the target service.

2. The base station of claim 1, wherein, The AAU structure comprises a digital intermediate frequency receiver (DIFR) and a first transceiver (TRX); the DIFR is connected with the first TRX; a receiving end in the first TRX is connected with one end of the first LNA through a first switch; a transmitting end in the first TRX is connected with the other end of the first LNA through a second switch. The controller is further configured to, in a case where the target service is detected as the sensing service and a coverage distance required by the sensing service is less than a preset threshold, control the first switch to be in an off state, so as to make the receiving link in the first TRX in an inoperative state; and control the second switch to be in an on state, so as to make the receiving circuit in an operative state. The controller is further configured to, in a case where the target service is detected as the communication service, control the first switch to be in an on state and the second switch to be in an off state, so as to make signals received by the receiving link in the first TRX and signals received by the receiving circuit superimposed. The receiving circuit further comprises a phase shifter; the base station further comprises a processor; one end of the phase shifter is connected with the first switch; the other end of the phase shifter is connected with the first LNA; the processor is connected with the receiving circuit and the first TRX respectively. The processor is further configured to calibrate signals received by the receiving link to obtain a first calibration value; and calibrate signals received by the receiving circuit to obtain a second calibration value; determine a third calibration value based on the first calibration value and the second calibration value; and store the third calibration value in the phase shifter.

4. The base station of claim 2, wherein, The phase shifter is configured to calibrate signals received by the receiving circuit by using the third calibration value to obtain calibrated signals, so as to make signals received by the receiving link in the first TRX and the calibrated signals superimposed in phase. ​ ​ ​ ​ 5. The base station of claim 3, wherein, The AAU structure further comprises a first power amplifier PA, a second amplifier LNA, a second filter and a second antenna; one end of the first power amplifier PA is connected with a transmitting end in the first TRX; the other end of the first power amplifier PA is connected with one end of the second LNA and one end of the second filter respectively; the other end of the second LNA is connected with the second switch; the other end of the second filter is connected with the second antenna; The first power amplifier PA is used for amplifying the first signal to obtain an amplified signal; The second antenna is used for receiving the amplified signal; The second filter is used for filtering interference signals in the amplified signal to obtain a filtered signal; The second LNA is used for amplifying the filtered signal to obtain a signal received by a receiving link in the first TRX.

6. The base station of claim 1, wherein, The AAU structure comprises a digital intermediate frequency receiver DIFR and a second transceiver TRX; the receiving circuit further comprises a third transceiver TRX; the DIFR is connected with the second TRX and the third TRX respectively; The controller is further used for controlling a receiving link in the third TRX to receive a signal transmitted by a transmitting link in the third TRX in the case that the target service is detected as the awareness service and a coverage distance required by the awareness service is greater than or equal to a preset threshold.

7. The base station of claim 6, characterized in that, The third TRX comprises a modulator IQ and a converter ADC; the IQ is connected with the ADC; the IQ is connected with the first LNA; The IQ is used for modulating a direction of the third signal to obtain a modulated signal; The ADC is used for digitally converting the modulated signal to obtain a converted digital signal; The AAU structure is further used for receiving the digital signal to satisfy a receiving channel number corresponding to the target service.

8. The base station of claim 6, wherein, The AAU structure further comprises a second power amplifier PA, a third amplifier LNA, a third filter and a third antenna; one end of the second PA is connected with a transmitting end in the second TRX; the other end of the second PA is connected with one end of the third LNA and one end of the third filter respectively; the other end of the third filter is connected with the third antenna; The second PA is used for amplifying the first signal to obtain an amplified signal; The third antenna is used for receiving the amplified signal; The third filter is used for filtering interference signals in the amplified signal to obtain a filtered signal; The third LNA is used for amplifying the filtered signal to obtain a signal received by a receiving link in the third TRX.

9. The base station according to any of claims 1-6, characterized by The receiving circuit is detachably arranged with the AAU structure.

10. A communication and perception integrated processing method, characterized by, The method is applied to the base station in any one of claims 1 to 9; the method comprises: In a case where a target service is detected, the receiving circuit in the base station and the receiving link in the AAU structure are controlled to receive a first signal transmitted by a transmitting link in the AAU structure, so as to meet a receiving channel number corresponding to the target service; the target service at least includes a sensing service and / or a communication service for uplink coverage enhancement.

11. The method of claim 10, wherein, The method further includes: In a case where the target service is detected as the sensing service and a coverage distance required by the sensing service is less than a preset threshold, a first switch in the base station is controlled to be in an off state, so as to make a receiving link in a first TRX in the base station in an inoperative state; and a second switch in the base station is controlled to be in an on state, so as to make the receiving circuit in an operative state.

12. The method of claim 10, wherein, The method further includes: In a case where the target service is detected as 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 as to make a signal received by the receiving link in the first TRX in the base station and a signal received by the receiving circuit superimposed.

13. The method of claim 10, wherein, The method further includes: In a case where the target service is detected as the sensing service and a coverage distance required by the sensing service is greater than or equal to a preset threshold, a receiving link in a third TRX in the base station is controlled to receive a signal transmitted by a transmitting link in the third TRX.

14. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by a processor to implement the steps in the communication and sensing integrated processing method of any one of claims 10 to 13.

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