Communication control method and system, latency adjustment apparatus, and storage medium

Abstract

The application relates to a communication control method, a system, a time delay adjustment device and a storage medium. A time delay adjustment device with a time delay adjustment function is installed on a link between a near-end machine of a relay coverage device and a through port of a coupler and an antenna, time delay of uplink and downlink radio frequency signals is adjusted, and subsequent processing is performed, so that the problem of signal multipath interference in an overlapping area is effectively solved, and network quality is improved and user service experience in the whole base station range is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mobile communication, in particular to a communication control method and system, a time delay adjustment device and a storage medium. BACKGROUND

[0002] There are generally two ways for mobile communication system signal coverage: one is direct signal coverage by a base station, the wireless signals of each cell in the coverage area are approximately completely synchronized, and there is basically no multipath interference problem caused by time delay difference. The other is to use a relay device to expand coverage and improve the performance-price ratio of the overall coverage system by taking the base station radio frequency signal as a signal source.

[0003] At present, in the field of mobile communication, the second way is usually used for signal coverage due to cost considerations. However, when the second signal coverage method is used, the transmission time delay of the relay device (such as a repeater system) and the different installation positions thereof may cause multipath interference in the signal overlapping coverage area, affecting the user service experience in the entire base station range.

[0004] To this end, the Chinese patent application with publication number "CN114430563B" discloses a method, device and system for eliminating signal interference in an overlapping coverage area. The time delay adjustment device receives the radio frequency signal of the signal source base station and sends it after a delay, so that the signal transmission time delay of the device is synchronized with the signal transmission time delay of the repeater system, thereby avoiding the problem of signal multipath interference in the overlapping coverage area of the radio frequency signal of the signal source base station and the signal of the repeater system.

[0005] However, when the distance between each remote machine is far, the time delay caused by signal transmission and processing between each remote machine will increase, and when the time delay increases to a certain value, the coverage area of the radio frequency signal of each remote machine may also have a multipath interference problem. In this case, the implementation scheme cannot solve the multipath interference problem caused by the mutual overlapping of the signals of the two remote machines of the same signal source. Moreover, the implementation scheme is not safe, and if the time delay adjustment device fails, the entire communication system signal will be interrupted. SUMMARY

[0006] To solve the multipath interference problem caused by the mutual overlapping of the signals of the remote machines of the same signal source, the present application provides a communication control method and system, a time delay adjustment device and a storage medium.

[0007] In a first aspect, the communication control method provided by the present application adopts the following technical scheme:

[0008] A communication control method applied to a communication system comprising a first communication link and a second communication link, the first communication link comprising a source base station, a through port of a coupler, a first time delay adjustment device and an antenna connected in sequence; the second communication link comprising the source base station, a coupling port of the coupler, a near-end machine (MU), a second time delay adjustment device and a plurality of remote machines (RUx) directly hung under the near-end machine (MU) connected in sequence; the first time delay adjustment device and the second time delay adjustment device are connected through a TCP protocol; the communication control method comprises:

[0009] Through the first time delay adjustment device, a time delay setting value Tn is subtracted by a self time delay value T0 to obtain a time delay adjustment value Ta; when receiving an uplink / downlink radio frequency signal of the first communication link, the uplink / downlink signal is preprocessed and delayed by Ta, then subsequent processing is performed, and the signal is controlled to be sent to the through port of the coupler or the antenna; so as to realize transmission time delay adjustment of the first communication link.

[0010] Through the second time delay adjustment device, a time delay setting value Tn is subtracted by a self time delay value T0 and a signal transmission time Tx between the near-end machine and the corresponding remote machine RUx to obtain a time delay adjustment value Tbx; when receiving an uplink / downlink radio frequency signal of the second communication link, the uplink / downlink signal is preprocessed and delayed by Tbx, then subsequent processing is performed, and the signal is directly sent to the near-end machine MU or the remote machine RUx; so as to realize transmission time delay adjustment of the second communication link.

[0011] The RUx represents an xth remote machine hung under the near-end machine MU, and x is a natural number greater than or equal to 1; the time delay setting value Tn is a time consumed from sending a radio frequency signal by the near-end machine MU to receiving the radio frequency signal by a farthest remote machine Run.

[0012] By adopting the above technical solution: by installing a time delay adjustment device with time delay adjustment function between the near-end machine of the relay coverage equipment and the through port of the coupler and the antenna, the uplink / downlink radio frequency signal is time delay adjusted and then subsequent processing is performed, which effectively solves the problem of signal multipath interference in the overlapping area, and is beneficial to improving network quality and improving user service experience in the entire base station range.

[0013] Optionally, the uplink / downlink signal is preprocessed and delayed by Ta, then subsequent processing is performed, and the signal is controlled to be sent to the through port of the coupler or the antenna, which comprises:

[0014] In the downlink, the source base station sends a part of the downlink radio frequency signal to the first time delay adjustment device through the coupler; the downlink radio frequency signal is preprocessed by the first time delay adjustment device, delayed for Ta, and then processed, and finally the downlink radio frequency signal is transmitted through the antenna.

[0015] In the uplink, the uplink radio frequency signal is received by the antenna and sent to the first time delay adjustment device; the uplink radio frequency signal is preprocessed by the first time delay adjustment device, delayed for Ta, and then processed, and finally the uplink radio frequency signal is sent to the source base station through the coupler.

[0016] Optionally, the preprocessing of the uplink and downlink signals includes:

[0017] In the downlink, the source base station sends another part of the downlink radio frequency signal to the front end of the near-end machine MU through the coupler; the downlink radio frequency signal is introduced into the second time delay adjustment device by the front end of the near-end machine; the downlink radio frequency signal is preprocessed by the second time delay adjustment device, delayed for Tbx, and then processed, and finally the downlink radio frequency signal is sent to the near-end machine MU for electro-optical signal conversion, and the optical signal is transmitted to the far-end machine RUx through the optical fiber.

[0018] In the uplink, the uplink radio frequency signal is received by the far-end machine RUx, and the optical signal is transmitted to the near-end machine MU through the optical fiber after electro-optical signal conversion; the optical signal is converted into an electrical signal by the near-end machine MU, and then enters the second time delay adjustment device; the optical signal is preprocessed by the second time delay adjustment device, delayed for Tbx, and then processed, and finally the optical signal is sent to the near-end machine MU; the near-end machine MU sends the uplink radio frequency signal after subsequent processing to the source base station through the coupler.

[0019] By adopting the above technical solutions, the time delay synchronization between the source base station and each far-end machine can be ensured.

[0020] Optionally, the preprocessing includes amplitude adjustment, mixing, low-pass filtering, analog-to-digital conversion, and down-conversion processing.

[0021] The subsequent processing includes up-conversion, digital-to-analog conversion, low-pass filtering, mixing, and amplitude adjustment processing.

[0022] Optionally, each of the far-end machines RUx and the near-end machine MU is directly connected through an optical fiber.

[0023] Optionally, the communication control method further includes:

[0024] When the state of the first time delay adjustment device and / or the second time delay adjustment device is monitored to be abnormal, the first time delay adjustment device and the second time delay adjustment device are switched to a bypass mode to control the first time delay adjustment device and the second time delay adjustment device to no longer process and time delay the uplink and downlink radio frequency signals.

[0025] By using the above technical solution, when the time delay adjustment device is abnormal, the bypass mode can be automatically switched, or when the time delay adjustment is not needed, the bypass mode can also be manually switched by the user; at this time, the uplink and downlink radio frequency signals can still maintain the connected state, and the signal coverage work of the entire mobile communication system is not affected, and the problem that the system is paralyzed due to the abnormality of the time delay adjustment device is avoided.

[0026] Optionally, the first time delay adjustment device and the second time delay adjustment device are time delay adjustment devices of the same specification; when the receiving port and the sending port of the time delay adjustment device are directly connected, the time delay adjustment device is in the bypass mode; when the receiving port and the sending port of the time delay adjustment device are connected through a radio frequency module and a baseband digital processing module, the time delay adjustment device is in a relay mode to process and time delay the received uplink and downlink radio frequency signals.

[0027] In a second aspect, the communication control system provided by the present application uses the following technical solution:

[0028] A communication control system comprises:

[0029] A first communication link and a second communication link, the first communication link comprising a signal source base station, a through port of a coupler, a first time delay adjustment device and an antenna connected in sequence; the second communication link comprising the signal source base station, a coupling port of the coupler, a near-end machine MU, a second time delay adjustment device and a plurality of remote machines RUx connected in sequence; the first time delay adjustment device and the second time delay adjustment device are connected through a TCP protocol communication;

[0030] The first time delay adjustment device is used to calculate a time delay adjustment value Ta by subtracting a time delay value T0 of itself from a time delay setting value Tn; when receiving the uplink and downlink radio frequency signals of the first communication link, the uplink and downlink signals are preprocessed and delayed by Ta, then subsequent processing is performed, and the signals are controlled to be sent to the through port of the coupler or the antenna; so as to realize the transmission time delay adjustment of the first communication link.

[0031] The second time delay adjustment device is used for calculating a time delay setting value Tn minus a self time delay value T0, and minus a time Tx of signal transmission between the near-end machine and a corresponding remote machine RUx, to obtain a time delay adjustment value Tbx; when receiving uplink and downlink radio frequency signals of the second communication link, the uplink and downlink signals are preprocessed with a delay Tbx, and then subsequent processing is performed to send to the near-end machine MU or the remote machine RUx; so as to realize transmission time delay adjustment of the second communication link.

[0032] The RUx represents an xth remote machine hung on the near-end machine MU, and x is a natural number greater than or equal to 1; the time delay setting value Tn is a time consumed from sending a radio frequency signal by the near-end machine MU to receiving the radio frequency signal by a most remote remote machine Run.

[0033] In a third aspect, the time delay adjustment device provided by the application adopts the following technical scheme:

[0034] A time delay adjustment device comprises a bypass function module, a radio frequency module and a baseband digital processing module connected with a control module;

[0035] The bypass function module comprises a first control switch and a second control switch, the first control switch is used for connecting a receiving port with a first relay port or a first bypass port according to a control instruction; and the second control switch is used for connecting a sending port with a second relay port or a second bypass port according to the control instruction.

[0036] The radio frequency module comprises a gain attenuation adjustment unit, a first mixer, a first low-pass filter, an analog-to-digital converter, a digital-to-analog converter, a second low-pass filter, a second mixer and a local oscillator.

[0037] The baseband digital processing module comprises a digital down-conversion unit, a first-stage signal processing unit, a time delay adjustment unit, a second-stage signal processing unit and a digital up-conversion unit.

[0038] The first relay port is connected with the second relay port through the gain attenuation adjustment unit, the first mixer, the first low-pass filter, the analog-to-digital converter, the digital down-conversion unit, the first-stage signal processing unit, the time delay adjustment unit, the second-stage signal processing unit, the digital up-conversion unit, the digital-to-analog converter, the second low-pass filter, the second mixer and the gain attenuation adjustment unit in sequence; and the first bypass port is connected with the second bypass port.

[0039] In a fourth aspect, the computer readable storage medium provided by the application adopts the following technical scheme:

[0040] A computer readable storage medium stores a computer program; the computer program is executed by a processor to implement the communication control method.

[0041] By adopting the technical solution, the carrier of the computer program of the communication control method is provided.

[0042] In summary, the present application includes at least the following beneficial technical effects:

[0043] 1. By installing a time delay adjustment device with time delay adjustment function on the link between the relay coverage device near-end machine and the coupler through port and the antenna, the uplink and downlink radio frequency signals are adjusted in time delay before subsequent processing, effectively solving the problem of signal multipath interference in the overlapping area, and improving the network quality and user service experience in the entire base station range.

[0044] 2. When the time delay adjustment device is abnormal, it can automatically switch to bypass mode, and the uplink and downlink radio frequency signals can still maintain the connected state, and the entire mobile communication system signal coverage work is not affected, and the system paralysis problem caused by abnormal time delay adjustment device is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is the structural block diagram of the communication control system in the embodiment of the present application;

[0046] Figure 2 is the structural block diagram of a time delay adjustment device in the embodiment of the present application;

[0047] Figure 3 is the structural block diagram of another time delay adjustment device in the embodiment of the present application;

[0048] Figure 4 is the internal structure function block diagram of AD9370 in the embodiment of the present application. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0050] The embodiment of the present application discloses a communication control system and a corresponding implemented communication control method.

[0051] Reference Figure 1 A communication control system includes a first communication link and a second communication link;

[0052] The first communication link comprises, in sequence, a source base station, a through port of a coupler, a first time delay adjusting system (TDAS) and an antenna.

[0053] The second communication link comprises, in sequence, the source base station, a coupling port of the coupler, a main unit (MU), a second time delay adjusting system and a plurality of remote units (RUx) connected to the main unit. RUx represents the xth remote unit connected to the main unit, and x is a natural number greater than or equal to 1. In an optional embodiment of the present application, the main unit is connected to a plurality of remote units to expand the coverage area, and each remote unit RUx and the main unit are directly connected through an optical fiber.

[0054] The first time delay adjusting system and the second time delay adjusting system are connected through a TCP (Transmission Control Protocol) communication.

[0055] The user management system is signal connected to the first time delay adjusting system and the second time delay adjusting system, and is used to control the setting time delay value Tn of each time delay adjusting system, such as receiving an external setting instruction to complete the setting of the setting time delay value Tn, and communicating with the time delay adjusting system through the TCP protocol.

[0056] In the embodiment of the present application, the time delay setting value Tn is the time consumed from the main unit MU sending a radio frequency signal to the farthest remote unit Run receiving the radio frequency signal. The time delay setting value Tn can be obtained by actual measurement.

[0057] In an optional embodiment of the present application, the first time delay adjusting system and the second time delay adjusting system have the same specifications, but are arranged on different links of the communication system to realize time delay synchronization processing of the two communication links.

[0058] Specifically, the first time delay adjusting system is used to calculate the time delay setting value Tn minus the time delay value T0 of itself to obtain a time delay adjusting value Ta; when receiving the uplink and downlink radio frequency signals of the first communication link, the uplink and downlink signals are preprocessed and delayed by Ta, and then subsequent processing is performed, and the signals are controlled to be sent to the through port of the coupler or the antenna; so as to realize the transmission time delay adjustment of the first communication link.

[0059] Specifically, in the downlink, the source base station sends a part of the downlink radio frequency signal to the first time delay adjustment device through the coupler; after the first time delay adjustment device pre-processes the downlink radio frequency signal, the downlink radio frequency signal is delayed for Ta, and then is processed subsequently, and finally is transmitted by the antenna; in the uplink, the uplink radio frequency signal is received by the antenna and then is sent to the first time delay adjustment device; after the first time delay adjustment device pre-processes the uplink radio frequency signal, the uplink radio frequency signal is delayed for Ta, and then is processed subsequently, and finally is sent to the source base station through the coupler.

[0060] The pre-processing of the downlink radio frequency signal by the first time delay adjustment device includes amplitude adjustment, mixing, low-pass filtering, analog-to-digital conversion and down-conversion processing; the subsequent processing includes up-conversion, digital-to-analog conversion, low-pass filtering, mixing and amplitude adjustment processing.

[0061] The second time delay adjustment device is used to calculate a time delay setting value Tn minus a time delay value T0 of the second time delay adjustment device, and minus a signal transmission time Tx between the near-end machine and the corresponding remote machine RUx, to obtain a time delay adjustment value Tbx; when the uplink and downlink radio frequency signals of the second communication link are received, the uplink and downlink radio frequency signals are pre-processed and then are delayed for Tbx, and then are processed subsequently, to be sent to the near-end machine MU or the remote machine RUx; so as to realize the transmission time delay adjustment of the second communication link.

[0062] Specifically, in the downlink, the source base station sends another part of the downlink radio frequency signal to the near-end machine MU front end through the coupler; the near-end machine MU front end introduces the downlink radio frequency signal into the second time delay adjustment device; after the second time delay adjustment device pre-processes the downlink radio frequency signal, the downlink radio frequency signal is delayed for Tbx, and then is processed subsequently, and is sent to the near-end machine MU for electro-optical signal conversion; and the optical signal is transmitted to the remote machine RUx through the optical fiber.

[0063] In the uplink, the uplink radio frequency signal is received by the remote machine RUx, and after electro-optical signal conversion, the optical signal is transmitted to the near-end machine MU through the optical fiber; the optical signal is converted into an electrical signal by the near-end machine MU, and then is introduced into the second time delay adjustment device; after the second time delay adjustment device pre-processes the electrical signal, the electrical signal is delayed for Tbx, and then is processed subsequently, and is sent to the near-end machine MU; and the near-end machine MU sends the uplink radio frequency signal processed subsequently to the source base station through the coupler.

[0064] In the optional embodiment of the present application, when it is monitored that the first time delay adjustment device and / or the second time delay adjustment device is abnormal / faulty, the first time delay adjustment device and the second time delay adjustment device are switched to the bypass mode, so as to control the first time delay adjustment device and the second time delay adjustment device not to process and adjust the time delay of the uplink and downlink radio frequency signals any more. Thus, the whole mobile communication system is not affected by the time delay adjustment device, and the safety of the whole mobile communication system is ensured.

[0065] The communication control method / system provided by the embodiments of the present application can not only solve the multipath interference problem caused by the signal mutual overlapping between the source base station and the relay device, but also solve the multipath interference problem caused by the signal mutual overlapping between two remote units (e.g., RU1 and RU2) of the same source, without wasting the energy of the base station radio frequency signal direct coverage. In addition, if the time delay adjustment device does not need to work, the bypass mode can be selected to reduce the power consumption; if the time delay adjustment device fails unexpectedly (e.g., power failure), the time delay adjustment device can automatically switch to the bypass mode, and the radio frequency signal of the connected path can still be kept in the connected state, and the amplitude of the radio frequency signal is not affected (without attenuation), which has no impact on the signal coverage system work of the entire mobile communication system.

[0066] Reference Figures 2-3 The time delay adjustment device includes a bypass function module 20, a radio frequency module 30 and a baseband digital processing module 40 which are signal connected with the control module 10.

[0067] The bypass function module 20 includes a first control switch 21 and a second control switch 22. The first control switch 21 is used to control the connection of the receiving port with the first relay port 211 or the first bypass port 212 according to the control instruction. The second control switch 22 is used to control the connection of the sending port with the second relay port 221 or the second bypass port 222 according to the control instruction.

[0068] The radio frequency module 30 includes a gain attenuation adjustment unit 31, a first mixer 32, a first low-pass filter 33 (LPF), an analog-to-digital converter 34 (ADC), a digital-to-analog converter 35 (DAC), a second low-pass filter 36, a second mixer 37 and a local oscillator 38. The local oscillator 38 is signal connected with the first mixer 32 and the second mixer 37 to provide an oscillation signal for the first mixer 32 and the second mixer 37.

[0069] The baseband digital processing module 40 includes a digital down conversion unit 41 (DDC), a first level signal processing unit 42, a time delay adjustment unit 43, a second level signal processing unit 44 and a digital up conversion unit 45 (DUC).

[0070] The first relay port 211 is connected with the second relay port 221 through the gain attenuation adjusting unit 31, the first mixer 32, the first low pass filter 33, the analog-digital converter 34, the digital down conversion unit 41, the first stage signal processing unit 42, the time delay adjusting unit 43, the second stage signal processing unit 44, the digital up conversion unit 45, the digital-analog converter 35, the second low pass filter 36, the second mixer 37, the gain attenuation adjusting unit 31 in sequence. When the receiving port is connected with the sending port through the first relay port 211 and the second relay port 221, the time delay adjusting device is in the relay mode at this time. The time delay adjusting device can not only adjust the time delay of the radio frequency signal, but also can adjust the amplitude of the signal in the working process, so as to ensure that the signal power has no influence on the overall system and can ensure normal processing.

[0071] The first bypass port 212 is directly connected with the second bypass port 222. When the receiving port is connected with the sending port through the first bypass port 212 and the second bypass port 222, the time delay adjusting device is in the bypass mode at this time.

[0072] In the embodiment of the application, the control module 10 is an ARM processor, which is used for configuring the working mode and working parameter of other modules, writing the upper layer software to complete the local operation software. The control module 10 includes: sending the control instruction to the bypass function module 20, controlling the time delay adjusting system to switch between the relay mode and the bypass mode; configuring the working mode of the radio frequency module 30 and the gain or attenuation adjustment of the radio frequency signal; sending the time delay adjusting parameter, and configuring the baseband digital processing module 40 to complete the time delay adjusting function.

[0073] The bypass function module 20 is realized by using a high frequency / radio frequency relay, and the switching of different working modes of the time delay adjusting system is completed by receiving the control instruction sent by the control module 10. The working mode of the time delay adjusting system has two modes: the relay mode and the bypass mode. When the time delay adjusting system is in the relay mode, the receiving port of the time delay adjusting system is connected with the radio frequency module, the received radio frequency signal is converted and processed by the radio frequency module and the baseband digital processing module in correspondence, and then is connected to the sending port through the bypass function module. When the control time delay adjusting system is in the bypass mode, the receiving port of the time delay adjusting system is directly connected to the sending port through the bypass function module, which is equivalent to that the input radio frequency signal of the time delay adjusting system is directly output without any processing. In addition, when the time delay adjusting system encounters a fault (such as power failure), the bypass function module will automatically switch to the bypass mode, the received radio frequency signal flows to the sending port through the receiving port, so as to ensure the normal working of the whole system.

[0074] The main function of the radio frequency module 30 is to receive the control signal of the control module 10, when the amplitude of the radio frequency analog signal input by the bypass function module 20 is large or small, the gain attenuation adjustment unit can adjust the amplitude, the value of the amplitude adjustment can be flexibly adjusted according to the actual value of the input radio frequency analog signal, so that the signal amplitude becomes a signal suitable for subsequent unit or module processing, after the amplitude adjustment, the analog signal and the local oscillation signal are mixed, low-pass filtered and converted into a digital signal, which is input to the next stage of the baseband digital processing module 40; at the same time, the digital signal input by the baseband digital processing module 40 is converted into an analog signal, low-pass filtered and mixed, and then the gain attenuation adjustment unit is adjusted to an appropriate amplitude (for example, the same amplitude as the input), and finally output to the previous stage of the bypass function module.

[0075] The gain attenuation adjustment unit 31 inside the radio frequency module 30 can realize the amplitude adjustment of the radio frequency signal in the relay mode of the time delay adjustment system, so that the amplitude of the radio frequency signal is not affected after passing through the time delay adjustment system, thereby not affecting the normal work of the relay coverage device.

[0076] The radio frequency module 30 can be built with discrete components or can use an integrated radio frequency transceiver chip. For example, the radio frequency module 30 can use a highly integrated wideband radio frequency transceiver AD9370 to achieve, AD9370 provides a dual-channel transmitter and receiver, an integrated frequency synthesizer and a digital signal processing function. The working frequency range of the device is 300 MHz to 6000 MHz, covering most of the licensed and unlicensed cellular frequency bands, supporting a maximum of 100 MHz receiver bandwidth. In addition, it also supports an observation receiver with a bandwidth of up to 250 MHz and a transmission frequency synthesis that can adapt to digital correction algorithms. The use of integrated radio frequency transceiver chips has low power consumption, which is conducive to system stability, and reduces the heat dissipation requirement, Figure 4 is the internal structure function block diagram of AD9370.

[0077] The baseband digital processing module is mainly composed of FPGA (Field Programmable Gate Array), the function of the module is to receive the digital signal input by the radio frequency module, and then perform digital down conversion by DDC (digital down conversion unit), after the first stage signal processing unit extracts the filter and converts it into an easy-to-handle baseband signal, the baseband signal is input to the second stage signal processing unit for interpolation filtering after the time delay adjustment unit completes the corresponding delay, and finally performs digital up conversion by DUC (digital up conversion unit) and outputs to the radio frequency module. The baseband digital processing module is also controlled by the control module, and the time delay adjustment unit is configured to complete the corresponding time delay value.

[0078] FPGA is Field Programmable Gate Array, FPGA device has the following characteristics: fast response, small batch production, programmable, no need to flow, no need to do back-end design, easy to upgrade, so the selection of FPGA to realize the baseband digital processing module can reduce the development cost, shorten the time to market, can be reconfigured.

[0079] The application also provides a computer readable storage medium, which stores a program capable of implementing the steps of the communication control method.

[0080] The computer readable storage medium includes, for example, a U disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and various storage program code media.

[0081] The above embodiments are only used to introduce the technical solutions of the application in detail, but the above embodiment descriptions are only used to help understand the method and the core idea of the application, and should not be understood as a limitation of the application. Those skilled in the art can easily think of changes or replacements within the technical range disclosed by the application, which should be covered within the protection scope of the application.

Claims

1. A communication control method characterized by comprising: The communication control method is applied to a communication system comprising a first communication link and a second communication link, the first communication link comprising a source base station, a through port of a coupler, a first time delay adjustment device and an antenna connected in sequence; the second communication link comprising the source base station, a coupling port of the coupler, a near-end machine (MU), a second time delay adjustment device and a plurality of remote machines (RUx) directly hung under the near-end machine (MU) connected in sequence; The first time delay adjustment device and the second time delay adjustment device are connected through a TCP protocol; the communication control method comprises: Through the first time delay adjustment device, a time delay setting value Tn is subtracted by a self time delay value T0 to obtain a time delay adjustment value Ta; when receiving an uplink / downlink radio frequency signal of the first communication link, the uplink / downlink radio frequency signal is preprocessed and delayed by Ta, then subsequent processing is performed, and the uplink / downlink radio frequency signal is controlled to be sent to the through port of the coupler or the antenna; so as to realize transmission time delay adjustment of the first communication link; Through the second time delay adjustment device, a time delay setting value Tn is subtracted by a self time delay value T0, and a signal transmission time Tx between the near-end machine and a corresponding remote machine RUx is subtracted to obtain a time delay adjustment value Tbx; when receiving an uplink / downlink radio frequency signal of the second communication link, the uplink / downlink radio frequency signal is preprocessed and delayed by Tbx, then subsequent processing is performed, and the uplink / downlink radio frequency signal is directly sent to the near-end machine MU or the remote machine RUx; so as to realize transmission time delay adjustment of the second communication link; The RUx represents an xth remote machine hung under the near-end machine MU, and x is a natural number greater than or equal to 1; the time delay setting value Tn is a time consumed from sending a radio frequency signal by the near-end machine MU to receiving the radio frequency signal by a farthest remote machine RUn; The communication control method further comprises: when monitoring that a state of the first time delay adjustment device and / or the second time delay adjustment device is abnormal, switching the first time delay adjustment device and the second time delay adjustment device to a bypass mode, so as to control the first time delay adjustment device and the second time delay adjustment device to no longer process and adjust time delay of the uplink / downlink radio frequency signal; The first time delay adjustment device and the second time delay adjustment device are time delay adjustment devices of the same specification; when a receiving port and a sending port of the time delay adjustment device are directly connected, the time delay adjustment device is in the bypass mode; when the receiving port and the sending port of the time delay adjustment device are connected through a radio frequency module and a baseband digital processing module, the time delay adjustment device is in a relay mode, so as to process and delay time of the received uplink / downlink radio frequency signal.

2. The communication control method according to claim 1, characterized by, The uplink / downlink radio frequency signal is preprocessed and delayed by Ta, then subsequent processing is performed, and the uplink / downlink radio frequency signal is controlled to be sent to the through port of the coupler or the antenna. In the downlink, the source base station sends a part of the downlink radio frequency signal to the first time delay adjustment device through the coupler; after the downlink radio frequency signal is preprocessed by the first time delay adjustment device, the downlink radio frequency signal is delayed by Ta, and then subsequent processing is performed, and finally the downlink radio frequency signal is transmitted through the antenna; In the uplink, the uplink radio frequency signal is received through the antenna and then enters the first time delay adjustment device; after the uplink radio frequency signal is preprocessed by the first time delay adjustment device, the uplink radio frequency signal is delayed by Ta, and then subsequent processing is performed, and finally the uplink radio frequency signal is sent to the source base station through the coupler.

3. The communication control method according to claim 1, characterized by, The preprocessed uplink and downlink radio frequency signals are delayed by Tbx, and then subsequent processing is performed to send the signals to the near-end machine MU or the far-end machine RUx. In the downlink, the source base station sends another part of the downlink radio frequency signal to the near-end machine MU front end through the coupler; the near-end machine front end introduces the downlink radio frequency signal into the second time delay adjustment device; after the downlink radio frequency signal is preprocessed by the second time delay adjustment device, the downlink radio frequency signal is delayed by Tbx, and then subsequent processing is performed, and finally the downlink radio frequency signal is sent to the near-end machine MU for electro-optical signal conversion, and the optical signal is transmitted to the far-end machine RUx through an optical fiber; In the uplink, the uplink radio frequency signal is received by the far-end machine RUx, and after electro-optical signal conversion, the optical signal is transmitted to the near-end machine MU through an optical fiber; the near-end machine MU converts the optical signal into an electrical signal, and then the electrical signal enters the second time delay adjustment device; after the electrical signal is preprocessed by the second time delay adjustment device, the electrical signal is delayed by Tbx, and then subsequent processing is performed, and finally the electrical signal is sent to the near-end machine MU; the near-end machine MU sends the uplink radio frequency signal subjected to subsequent processing to the source base station through the coupler.

4. The communication control method according to claim 1, characterized by, The preprocessing includes amplitude adjustment, mixing, low-pass filtering, analog-to-digital conversion, and down-conversion processing. The subsequent processing includes up-conversion, digital-to-analog conversion, low-pass filtering, mixing, and amplitude adjustment processing.

5. The communication control method according to any one of claims 1 to 4, characterized by, Each of the far-end machines RUx and the near-end machine MU is directly connected to each other through an optical fiber.

6. The communication control method according to claim 1, characterized by, The time delay adjustment device includes a bypass function module, a radio frequency module, and a baseband digital processing module which are connected to a control module; The bypass function module includes a first control switch and a second control switch; the first control switch is used to connect a receiving port to a first relay port or a first bypass port according to a control instruction; and the second control switch is used to connect a sending port to a second relay port or a second bypass port according to the control instruction. The radio frequency module includes a gain attenuation adjustment unit, a first mixer, a first low-pass filter, an analog-to-digital converter, a digital-to-analog converter, a second low-pass filter, a second mixer, and a local oscillator. The baseband digital processing module includes a digital down-conversion unit, a first-stage signal processing unit, a time delay adjustment unit, a second-stage signal processing unit, and a digital up-conversion unit. The first relay port is connected with the second relay port through the gain attenuation adjustment unit, the first mixer, the first low pass filter, the analog-to-digital converter, the digital down conversion unit, the first stage signal processing unit, the time delay adjustment unit, the second stage signal processing unit, the digital up conversion unit, the digital-to-analog converter, the second low pass filter, the second mixer and the gain attenuation adjustment unit in sequence; and the first bypass port is connected with the second bypass port.

7. A communication control system characterized by comprising: The communication control system comprises a first communication link and a second communication link, the first communication link comprises a signal source base station, a through port of a coupler, a first time delay adjustment device and an antenna which are connected in sequence; the second communication link comprises the signal source base station, a coupling port of the coupler, a near-end machine (MU), a second time delay adjustment device and a plurality of remote machines (RUx) which are connected in sequence; the first time delay adjustment device and the second time delay adjustment device are connected through a TCP protocol; The first time delay adjustment device is used for calculating a time delay setting value Tn minus a self time delay value T0 to obtain a time delay adjustment value Ta; when receiving uplink and downlink radio frequency signals of the first communication link, the uplink and downlink radio frequency signals are preprocessed and delayed by Ta, then subsequent processing is performed, and the signals are sent to the through port of the coupler or the antenna; so as to realize transmission time delay adjustment of the first communication link; The second time delay adjustment device is used for calculating the time delay setting value Tn minus the self time delay value T0, and minus a signal transmission time Tx between the near-end machine and a corresponding remote machine RUx to obtain a time delay adjustment value Tbx; when receiving uplink and downlink radio frequency signals of the second communication link, the uplink and downlink radio frequency signals are preprocessed and delayed by Tbx, then subsequent processing is performed, and the signals are sent to the near-end machine MU or the remote machine RUx; so as to realize transmission time delay adjustment of the second communication link; The RUx represents an xth remote machine hung on the near-end machine MU, and x is a natural number greater than or equal to 1; the time delay setting value Tn is a time consumed from sending a radio frequency signal by the near-end machine MU to receiving the radio frequency signal by a farthest remote machine RUn; The communication control system is used for: when monitoring that a state of the first time delay adjustment device and / or the second time delay adjustment device is abnormal, switching the first time delay adjustment device and the second time delay adjustment device to a bypass mode, so as to control the first time delay adjustment device and the second time delay adjustment device not to process and adjust time delay of the uplink and downlink radio frequency signals any more; The first time delay adjustment device and the second time delay adjustment device are time delay adjustment devices with same specifications; when a receiving port and a sending port of the time delay adjustment device are directly connected, the time delay adjustment device is in the bypass mode; when the receiving port and the sending port of the time delay adjustment device are connected through a radio frequency module and a baseband digital processing module, the time delay adjustment device is in a relay mode, so as to process and adjust time delay of received uplink and downlink radio frequency signals.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program; the computer program is executed by a processor to implement the communication control method in any one of claims 1-5.

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