WO2023025157A1 - 对讲中继系统及其射频收发控制方法、装置 - Google Patents

对讲中继系统及其射频收发控制方法、装置 Download PDF

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Publication number
WO2023025157A1
WO2023025157A1 PCT/CN2022/114315 CN2022114315W WO2023025157A1 WO 2023025157 A1 WO2023025157 A1 WO 2023025157A1 CN 2022114315 W CN2022114315 W CN 2022114315W WO 2023025157 A1 WO2023025157 A1 WO 2023025157A1
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Prior art keywords
relay station
radio frequency
relay
slave
time
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PCT/CN2022/114315
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English (en)
French (fr)
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张威
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力同科技股份有限公司
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Publication of WO2023025157A1 publication Critical patent/WO2023025157A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of intercom technology, in particular to an intercom relay system and its radio frequency transceiver control method, device, computer equipment and storage medium.
  • the existing intercom repeater system includes multiple repeater stations.
  • the repeater in the intercom repeater system whether it is an analog system or a digital system, generally adopts the method of sending and receiving different frequencies, that is, the uplink frequency is used for reception, and the downlink frequency is used for transmission. The distance between the uplink frequency and the downlink frequency is sufficient. interval.
  • a duplexer is usually added to the intercom relay system.
  • the essence of the duplexer is two band-pass filters, the pass bands of the two band-pass filters do not overlap, and the uplink frequency and downlink frequency are respectively in one of the passbands.
  • the function of the duplexer is to isolate the transceiver frequency and reduce the blocking effect of radio frequency. If no duplexer is added, the downlink transmission signal of the intercom relay system will cause great blocking and interference to the uplink reception signal of the intercom relay system.
  • the intercom relay system when deploying the intercom relay system, since different intercom relay systems have different uplink and downlink frequencies of the relay stations, it is necessary to customize the corresponding duplexers according to the different frequencies of the different intercom relay systems, resulting in On the one hand, the cost of the intercom relay system is high, on the other hand, the deployment of the intercom relay system is very inconvenient. Once the uplink and downlink frequencies of the intercom relay system change, it may be necessary to re-customize the duplexer.
  • An intercom relay system includes a master control relay station and a slave control relay station; the master control relay station is used to send a time slot control signal to the slave control relay station; and, the slave control center
  • the relay station is used to adjust the radio frequency signal transmission time and/or radio frequency signal reception time of the slave control relay station according to the time slot control signal
  • the master control relay station is also used to adjust the radio frequency of the master control relay station according to the time slot control signal Signal transmission time and/or RF signal reception time to avoid any relay station except any relay station from transmitting during the period when any one of the master relay station and slave control relay station is receiving RF signals RF signal.
  • both the master relay station and the slave relay station are time division duplex single frequency relay stations.
  • the slave relay station when the slave relay station is initialized or woken up, it adjusts the radio frequency signal transmission time and/or the radio frequency signal reception time according to the time slot control signal.
  • the master relay station is further configured to generate a time slot control signal according to the radio frequency signal sending time and/or the radio frequency signal reception time of the master relay station.
  • the time slot control signal is a high-low level signal
  • the high-low level signal includes a high-level signal and a low-level signal
  • the slave control repeater station and the master control repeater station adjust the radio frequency according to the high-level signal
  • the signal transmission time, the slave control repeater station and the master control repeater station adjust the radio frequency signal reception time according to the low-level signal.
  • the duration of the high-level signal is equal to the duration of the transmitting time slots in the slave relay station and the master relay station
  • the duration of the low-level signal is equal to the duration of the slave relay station and the master relay station.
  • the receive slots in the stations are of equal duration.
  • the time slot control signal is a high-low level signal
  • the high-low level signal includes a high-level signal and a low-level signal
  • the slave control repeater station and the master control repeater station adjust the radio frequency according to the low-level signal
  • the signal transmission time, the slave control repeater station and the master control repeater station adjust the radio frequency signal reception time according to the high-level signal.
  • the duration of the low-level signal is equal to the duration of the transmitting time slots in the slave relay station and the master relay station
  • the duration of the high-level signal is equal to the duration of the slave relay station and the master relay station.
  • the receive slots in the stations are of equal duration.
  • the high-low level signal is a high-low level signal with multiple consecutive cycles.
  • the master relay station is used for sending and receiving control data of the control channel
  • the slave control relay station is used for forwarding the service data of the service channel from the intercom terminal.
  • the master relay station is also used to send an access response to the intercom terminal according to the state of the slave control relay station after receiving the access request from the intercom terminal, so as to notify the intercom terminal Information related to the slave control repeater.
  • the master relay station is a relay station for sending and receiving control data of a control channel
  • the slave control relay station includes a slave control station for forwarding service data of a service channel from an intercom terminal
  • the relay station, and the slave control relay station used to send and receive the control data of the control channel; when all the slave control relay stations in the slave control relay station have not received the time slot control signal, the slave control relay station specifies The slave relay station sends the time slot control signal to the slave relay station except the designated slave relay station, and the designated slave relay station sends the time slot control signal to the master relay station.
  • the slave control relay station is a slave control relay station for sending and receiving control data of the control channel.
  • An intercom relay system includes an integrated controller and at least two relay stations; the integrated controller is used to send time slot control signals to each relay station; and each relay station is used to The control signal adjusts the radio frequency signal transmission time and/or the radio frequency signal reception time of each relay station, so as to avoid any relay station except any relay station during the period when any relay station receives the radio frequency signal.
  • the station transmits radio frequency signals.
  • each relay station adjusts the radio frequency signal transmission time and/or the radio frequency signal reception time according to the time slot control signal when it is initialized or woken up.
  • the time slot control signal is a high-low level signal
  • the high-low level signal includes a high-level signal and a low-level signal
  • each relay station is used to adjust the radio frequency of each relay station according to the high-level signal signal transmission time and/or adjust the radio frequency signal reception time according to the low level signal
  • each repeater is used to adjust the radio frequency signal transmission time of each repeater station according to the low level signal and/or adjust the radio frequency according to the high level signal Signal reception time.
  • the at least two relay stations include a first relay station for forwarding service data of a service channel from an intercom terminal, and a second relay station for sending and receiving control data of a control channel ;
  • the second relay station sends the time slot control signal to the first relay station; and, the first relay station is used to control the time slot according to the time slot
  • the signal adjusts the radio frequency signal transmission time and/or radio frequency signal reception time of the first relay station, and the second relay station is also used to adjust the radio frequency signal transmission time and/or radio frequency signal of the second relay station according to the time slot control signal
  • the receiving time is used to prevent any relay station except any relay station from transmitting radio frequency signals during the period when any relay station in the first relay station and the second relay station receives radio frequency signals.
  • a radio frequency transceiver control method for an intercom relay system includes a master control relay station and a slave control relay station, the method is applied to the master control relay station, and the method includes: generating a time slot control signal ; adjust the radio frequency signal transmission time and/or radio frequency signal reception time of the master relay station according to the time slot control signal; and, send a time slot control signal to the slave control relay station to instruct the slave control relay station to control
  • the signal adjusts the RF signal transmission time and/or RF signal reception time of the slave relay station, so as to avoid any relay station receiving RF signals from the master relay station and the slave relay station. other relay stations other than the station transmit radio frequency signals.
  • a method for controlling radio frequency transmission and reception of an intercom relay system includes a master control relay station and a slave control relay station.
  • the method is applied to the slave control relay station.
  • the method includes: receiving The time slot control signal of the relay station, the master control relay station adjusts the radio frequency signal transmission time and/or the radio frequency signal reception time of the master control relay station according to the time slot control signal; and, adjusts the slave control relay station according to the time slot control signal RF signal transmission time and/or RF signal reception time, to avoid any relay station except any relay station emit radio frequency signals.
  • a radio frequency transceiver control device for an intercom relay system includes a master control relay station and a slave control relay station.
  • the device is applied to the master control relay station.
  • the device includes: a generating module for Generate a time slot control signal; the first adjustment module is used to adjust the radio frequency signal transmission time and/or radio frequency signal reception time of the master relay station according to the time slot control signal; the sending module is used to send time to the slave control relay station slot control signal to instruct the slave control relay station to adjust the radio frequency signal transmission time and/or radio frequency signal reception time of the slave control relay station according to the time slot control signal, so as to avoid any While a relay station is receiving radio frequency signals, other relay stations except any relay station transmit radio frequency signals.
  • a radio frequency transceiver control device for an intercom relay system includes a master control relay station and a slave control relay station.
  • the device is applied to a slave control relay station.
  • the device includes: a receiving module for Receiving the time slot control signal from the master relay station, the master relay station adjusts the radio frequency signal transmission time and/or radio frequency signal reception time of the master relay station according to the time slot control signal; and, the second adjustment module is used for Adjust the radio frequency signal transmission time and/or radio frequency signal reception time of the slave control relay station according to the time slot control signal, so as to avoid the Repeater stations other than any repeater transmit radio frequency signals.
  • a computer device including a memory and one or more processors, computer readable instructions are stored in the memory, and when the computer readable instructions are executed by the one or more processors, the one or more processors execute the above intercom Following the steps of the radio frequency transceiver control method of the system.
  • One or more non-volatile computer-readable storage media storing computer-readable instructions, when the computer-readable instructions are executed by one or more processors, one or more processors execute the above intercom relay system The steps of the radio frequency transceiver control method.
  • the master control relay station sends a time slot control signal to the slave control relay station, and the slave control relay station adjusts the slave control signal based on the time slot control signal.
  • the radio frequency signal transmission time and/or the radio frequency signal reception time of the control relay station meanwhile, the master control relay station adjusts the radio frequency signal transmission time and/or the radio frequency signal reception time of the master control relay station based on the time slot control signal.
  • the radio frequency signal transmission time and/or the radio frequency signal reception time are adjusted based on the same signal, so as to avoid any relay station in the master relay station and the slave relay station During the period of receiving radio frequency signals, other repeaters except any repeater transmit radio frequency signals. In this way, even if the frequency of sending and receiving of each repeater is the same, the intercom repeater system can be avoided by time division multiplexing.
  • the transmission of the downlink frequency blocks and interferes with the reception of the uplink frequency, and this application does not need to use a duplexer, which can reduce the cost of the intercom relay system and improve the deployment flexibility of the intercom relay system.
  • the above-mentioned intercom relay system sends a time slot control signal to each relay station through an integrated controller, and each relay station is used to adjust the radio frequency signal transmission time and/or radio frequency signal of each relay station according to the time slot control signal
  • the receiving time is used to prevent other relay stations except any relay station from transmitting radio frequency signals during the period when any relay station among the relay stations is receiving radio frequency signals.
  • the transmitting and receiving frequencies of each repeater station are the same, the blocking and interference of the transmission of the downlink frequency in the intercom relay system to the reception of the uplink frequency can be avoided by means of time division multiplexing, and this application does not need to use a duplexer.
  • the cost of the intercom relay system can be reduced and the deployment flexibility of the intercom relay system can be improved.
  • FIG. 1 is a schematic diagram of the structural connection of an existing intercom relay system in one or more embodiments of the present application
  • FIG. 2 is a schematic structural connection diagram of an intercom relay system of the present application in one or more embodiments of the present application;
  • FIG. 3 is a schematic diagram of alignment of sending and receiving time slots of an intercom relay system of the present application in one or more embodiments of the present application;
  • FIG. 4 is a schematic flow diagram of internal information processing of a master relay station and a slave relay station of an intercom relay system of the present application in one or more embodiments of the present application;
  • FIG. 5 is a schematic diagram of time slot alignment between a slave relay station and a master relay station through high and low level signals in one or more embodiments of the present application;
  • FIG. 6 is a schematic structural connection diagram of an intercom relay system of the present application in one or more embodiments of the present application;
  • FIG. 7 is a schematic flowchart of a method for controlling radio frequency transmission and reception of an intercom relay system of the present application in one or more embodiments of the present application;
  • FIG. 8 is a schematic flowchart of a method for controlling radio frequency transmission and reception of an intercom relay system of the present application in one or more embodiments of the present application;
  • FIG. 9 is a structural block diagram of a radio frequency transceiver control device of an intercom relay system of the present application in one or more embodiments of the present application;
  • FIG. 10 is a structural block diagram of a radio frequency transceiver control device of an intercom relay system of the present application in one or more embodiments of the present application;
  • FIG. 11 is an internal structure diagram of a computer device in one or more embodiments of the present application.
  • an intercom relay system includes a master relay station and a slave relay station. There can be one or at least two slave control repeaters. As shown in FIG. 2 , when there are multiple slave control relay stations, the multiple slave control relay stations include slave control relay station 21 , slave control relay station 22 . . . slave control relay station 2N. Both the master control repeater and the slave control repeater are intercom repeaters used to increase the communication distance of the intercom in the intercom cluster base station. Refer to Figure 2 for the connection structure of the master control repeater station and the slave control repeater station in the intercom repeater system. As shown in FIG.
  • the master control relay station and the slave control relay station are respectively connected to the antenna, and the reception of the uplink radio frequency signal and the transmission of the downlink radio frequency signal are realized through the antenna. Wherein, when realizing the transmission and reception of radio frequency signals, there is no relationship between the master control relay station and the slave control relay station.
  • the master control relay station sends a time slot control signal to the slave control relay station, and the slave control relay station adjusts the radio frequency signal transmission time and/or radio frequency signal reception time of the slave control relay station according to the time slot control signal , and the master relay station adjusts the radio frequency signal transmission time and/or radio frequency signal reception time of the master relay station according to the time slot control signal, so as to avoid any relay station in the master control relay station and the slave control relay station During the period of receiving radio frequency signals, other relay stations except any relay station transmit radio frequency signals.
  • the relationship between the master relay station and the slave relay station is the master controller and the slave controller.
  • the master control and slave control here mean that the relay station as the master controls the radio frequency signal transmission time and/or the radio frequency signal reception time inside the repeater station as the slave control by sending a time slot control signal.
  • both the master control relay station and the slave control relay station adjust the radio frequency signal transmission time and/or radio frequency signal reception time according to the time slot control signal, including three implementation methods:
  • the slave control relay station is used to adjust the radio frequency signal transmission time of the slave control relay station according to the time slot control signal
  • the master control relay station is also used to adjust the radio frequency signal of the master control relay station according to the time slot control signal Transmitting time, so as to avoid any relay station except any relay station from transmitting radio frequency signals during the period when any one of the master relay station and the slave control relay station receives radio frequency signals.
  • the intercom relay system can avoid any relay station in the master relay station and the slave relay station from receiving During the radio frequency signal period, other relay stations except any relay station transmit radio frequency signals. It can be that the radio frequency transmission time of the master control relay station and the slave control repeater station are controlled to be the same through the time slot control signal, that is, any one or more repeaters of the master control repeater station and the slave control repeater station need to transmit radio frequency signals , all transmit radio frequency signals at the same time. Since the RF transmission time of the master relay station and the slave relay station are the same, there will be no situation that any relay station receives the RF signal during the RF transmission time. Therefore, in this case, the master relay station and the slave relay station The radio frequency receiving time of the control relay station can be the same or different. That is, the master relay station and the slave relay station can receive radio frequency signals at the same time, or receive radio frequency signals at different times.
  • the slave control relay station is used to adjust the radio frequency signal receiving time of the slave control relay station according to the time slot control signal
  • the master control relay station is also used to adjust the radio frequency signal of the master control relay station according to the time slot control signal
  • the receiving time is used to avoid transmitting radio frequency signals by other relay stations except any relay station during the period when any one of the master relay station and the slave control relay station receives radio frequency signals.
  • the intercom relay system can avoid any relay station in the master control relay station and the slave control relay station from receiving During the radio frequency signal period, other relay stations except any relay station transmit radio frequency signals.
  • This situation applies to the case where the uplink and downlink time slots set by the master relay station and the slave relay stations are the same. For example, both uplink and downlink time slots stipulated in the DMR protocol are used.
  • the radio frequency transmission time of the master control relay station and the slave control relay station are also the same, thereby realizing the master
  • the control repeater station and the slave control repeater station transmit radio frequency signals at the same time, avoiding the period when any relay station of the master control repeater station and the slave control repeater station receives radio frequency signals, except for any repeater station other repeaters to transmit radio frequency signals.
  • the slave control relay station is used to adjust the radio frequency signal transmission time and radio frequency signal reception time of the slave control relay station according to the time slot control signal
  • the master control relay station is also used to adjust the master control center according to the time slot control signal.
  • the radio frequency signal transmission time and radio frequency signal reception time of the relay station so as to avoid any relay station except any relay station receiving the radio frequency signal
  • the station transmits radio frequency signals.
  • the slave control relay station and the master control relay station adjust the RF reception time and RF transmission time at the same time, so that the RF transmission time and the RF reception time of the slave control relay station and the master control relay station are the same .
  • Other repeaters transmit radio frequency signals.
  • the time slot control signal may be any type of signal.
  • the time slot control signal may be a square wave signal, a sine-cosine signal, or a triangular wave signal.
  • the master relay station and the slave relay station set corresponding signal detection modes based on the signal characteristics of the time slot control signal.
  • the slave control relay station uses this signal detection method to identify the signal characteristics of the time slot control signal, and adjust the radio frequency signal transmission time and/or the slave control relay station according to the signal characteristics of the time slot control signal or RF signal reception time.
  • the master relay station uses the signal detection method to identify the signal characteristics of the time slot control signal, and adjusts the radio frequency signal transmission time and/or radio frequency signal reception time of the master control relay station according to the signal characteristics of the time slot control signal. time.
  • one of the signal characteristics of the time slot control signal is: a signal characteristic of a rectangular wave with only two values of "high” and “low".
  • “high” and “low” refer to two relative values.
  • the signal detection method in the master control repeater station and the slave control repeater station is: detecting the "high” value and its duration, and the "low” value and its duration in the time slot control signal.
  • a signal detection method of pulse detection may be used to identify the signal characteristics of the square wave signal.
  • the master relay station and the slave relay station adjust the radio frequency signal transmission time and/or radio frequency signal reception time according to the signal characteristics of the time slot control signal as follows: adjust the radio frequency signal transmission based on the "high” value of the time slot control signal time, and/or, adjust radio frequency signal reception time based on the "low” value of the slot control signal.
  • the time slot control signal is a sine-cosine signal
  • one of the signal characteristics of the time slot control signal is: there are two maximum values that are reversed and equal in value.
  • the signal detection method in the master control repeater station and the slave control repeater station is: detect the direction of the time slot control signal and record the time point when the signal in each direction reaches the maximum value.
  • the master control repeater station and the slave control repeater station adjust the radio frequency signal transmission time and/or radio frequency signal reception time according to the signal characteristics of the time slot control signal: adjust the radio frequency based on the time point of the maximum value of the time slot control signal in one direction
  • the signal transmission time, and/or, the radio frequency signal reception time adjusted based on the time point of the maximum value of the time slot control signal in the other direction.
  • the master control relay station sends a time slot control signal to the slave control relay station, and the slave control relay station adjusts the radio frequency signal transmission time and/or radio frequency signal of the slave control relay station based on the time slot control signal
  • the receiving time at the same time, the master relay station adjusts the radio frequency signal transmission time and/or the radio frequency signal reception time of the master relay station based on the time slot control signal. Therefore, for both the master relay station and the slave relay station, the radio frequency signal transmission time and/or the radio frequency signal reception time are adjusted based on the same signal, so as to avoid any relay station in the master relay station and the slave relay station During the period of receiving radio frequency signals, other repeaters except any repeater transmit radio frequency signals.
  • the intercom repeater system can be avoided by time division multiplexing.
  • the transmission of the downlink frequency blocks and interferes with the reception of the uplink frequency, and this application does not need to use a duplexer, which can reduce the cost of the intercom relay system and improve the deployment flexibility of the intercom relay system.
  • both the above-mentioned master relay station and the above-mentioned slave relay station are time-division duplex single-frequency relay stations.
  • both the master relay station and the slave relay station are single-frequency relay stations, that is, the transceiver frequency of any relay station in the master relay station and the slave relay station is the same, so duplexing is not required. Transceiver frequency isolation.
  • both the master control relay station and the slave control relay station are time-division duplex relay stations, which may specifically be time-division duplex relay stations based on the DMR protocol.
  • the slave control relay station adjusts the radio frequency signal transmission time and/or radio frequency signal reception time of the slave control relay station according to the time slot control signal
  • the master control relay station adjusts the radio frequency signal reception time according to the time slot control signal
  • the radio frequency signal transmission time and/or the radio frequency signal reception time of the master control relay station so that the uplink time slots and downlink time slots of each relay station in the slave control relay station and the master control relay station are aligned to ensure that the downlink time slots
  • the time period of the uplink time slot will not be occupied, so as to avoid the transmission of radio frequency by other relay stations except any relay station during the period when any relay station in the master relay station and the slave control relay station receives RF signals Signal.
  • the slave relay station when the slave relay station is initialized or woken up, it adjusts the radio frequency signal transmission time and/or the radio frequency signal reception time according to the time slot control signal.
  • the radio frequency signal transmission time and/or radio frequency signal reception time are adjusted according to the time slot control signal during initialization or when awakened .
  • the radio frequency signal transmission time and/or radio frequency signal reception time are adjusted according to the time slot control signal during initialization or when awakened .
  • the time slot control signal waits to receive the time slot control signal, and then adjust the radio frequency signal transmission time and/or radio frequency signal reception time according to the time slot control signal.
  • the master relay station generates a time slot control signal before transmitting the radio frequency signal, sends the time slot control signal to the slave control relay station, and adjusts the radio frequency signal transmission time and/or radio frequency signal reception time according to the time slot control signal . Therefore, it can be ensured that the intercom relay system completes the adjustment of the radio frequency signal transmission time and/or radio frequency signal reception time of the master relay station and the slave control relay station before data interaction with the intercom terminal, avoiding conflicts with the intercom terminal.
  • the downlink transmission signal will cause blocking and interference to the uplink receiving signal of the intercom relay system when the intercom terminal performs data interaction.
  • the master relay station outputs a time slot control signal to the slave relay station before transmitting the broadcast signal.
  • the master relay station may output a time slot control signal to the slave relay station before it is powered on, initialized or woken up.
  • the master relay station also synchronizes the receiving/transmitting time slot time inside the master relay station based on the time slot control signal (not shown in FIG. 4 ).
  • the slave control relay station Before the slave control relay station is powered on, initialized or woken up, it judges whether it receives the time slot control signal. If yes, perform synchronization of the internal receiving/transmitting time slots of the slave relay station according to the time slot control signal. If not, the slave relay station is in a waiting state until receiving a time slot control signal.
  • the master relay station and the slave relay station When both the master relay station and the slave relay station synchronize the internal receiving/transmitting time slot time based on the time slot control signal, the master relay station and the slave relay station enter the intercom terminal data forwarding operation process. Specifically, as shown in FIG. 4, the master relay station sends broadcast signals according to the downlink time slot determined by the time slot control signal, and judges whether there is a broadcast signal from the intercom terminal in the uplink time slot determined according to the time slot control signal. Uplink call request. If an uplink call request is received, a downlink response is sent in the downlink time slot determined according to the time slot control signal. The downlink response includes the information about the specific relay station, so that the intercom terminal can send the service data of the traffic channel to the specific relay station. If there is no idle relay station available, the intercom terminal is notified of the situation in the downlink response, so that the intercom terminal then tries an uplink call request.
  • the slave relay station adjusts the receiving time and sending time according to the time slot control signal, so as to maintain synchronization with the master relay station and other slave relay stations. If the uplink service data is received in the uplink time slot determined according to the time slot control signal, the received uplink service data is forwarded in the subsequent downlink time slot.
  • the time slots of the receiving/transmitting time slots of each relay station can be synchronized, thereby avoiding the need to During the period when any relay station receives radio frequency signals, other relay stations transmit radio frequency signals, which causes the blocking and interference of the transmission of the downlink frequency to the reception of the uplink frequency in the intercom relay system.
  • the master relay station is further configured to generate a time slot control signal according to the radio frequency signal sending time and/or the radio frequency signal reception time of the master relay station.
  • the master relay station generates a time slot control signal according to the radio frequency signal sending time of the master relay station. Or, the master relay station generates a time slot control signal according to the receiving time of the radio frequency signal of the master relay station. Or, the master relay station generates the time slot control signal according to the radio frequency signal sending time and the radio frequency signal receiving time of the master relay station. In this embodiment, the master relay station generates the time slot control signal based on its internal radio frequency signal transmission time and/or radio frequency signal reception time, without adding additional equipment to assist in generating the time slot control signal, the operation is simple and the feasibility is high, The applicable scenarios are more extensive.
  • the time slot control signal is a high-level signal
  • the high-low level signal includes a high-level signal and a low-level signal
  • the slave control relay station and the master control relay station adjust the radio frequency signal according to the high-level signal Transmitting time
  • the slave control repeater station and the master control repeater station adjust the radio frequency signal receiving time according to the low-level signal.
  • the duration of the high-level signal is equal to the duration of the transmitting time slot in the slave control relay station and the master control relay station
  • the duration of the low-level signal is equal to the duration of the slave control relay station and the master control relay station.
  • the receive slots are of equal duration.
  • the time slot control signal is a high-low level signal
  • the high-low level signal includes a high-level signal and a low-level signal
  • the slave control relay station and the master control relay station adjust the radio frequency signal according to the low-level signal Transmitting time, the slave control repeater station and the master control repeater station adjust the radio frequency signal receiving time according to the high-level signal.
  • the duration of the low-level signal is equal to the duration of the transmitting time slot in the slave control relay station and the master control relay station
  • the duration of the high-level signal is equal to the duration of the slave control relay station and the master control relay station.
  • the receive slots are of equal duration.
  • the time slot control signal is a high-level signal and the low-level signal includes a high-level signal and a low-level signal.
  • the RF signal receiving time can be adjusted based on the high level signal, and the RF signal transmitting time can be adjusted based on the low level signal. Or, adjust the transmitting time of the radio frequency signal based on the high level signal, and adjust the receiving time of the radio frequency signal based on the low level signal.
  • the high-level signal The duration of the low-level signal is equal to the duration of the receiving time slots in the slave relay station and the master relay station. For example, the following gives an example of time slot alignment between the slave relay station and the master relay station through high and low level signals, as shown in Figure 5:
  • the master control repeater sends out high and low level signals.
  • a low-level signal means that the master repeater is in the receiving state, and the slave repeater is also in the receiving state.
  • the time period of the receiving state is T0.
  • the high-level signal changes from a low-level signal to a high-level signal, as shown in Figure 5, the high-level signal first enters the power ramp time T1 of the transmitting power amplifier, and the high-level signal is received from the control relay station Or level signal or transition signal from low to high.
  • the slave control relay station has a service requirement of forwarding calls, it also immediately enters the radio frequency signal transmission preparation stage. If there is no business demand for transit business, it is in a waiting state. As shown in FIG.
  • the master relay station and the slave relay station enter the transmission state, and the time period of the transmission state is T2.
  • the duration of the receiving time slots in the slave relay station and the master relay station is T0, and the duration of the transmission time slots in the slave relay station and the master relay station is T2.
  • the low-level signal When the slave control repeater station and the master control repeater station adjust the RF signal transmission time according to the low-level signal, and the slave control repeater station and the master control repeater station adjust the RF signal reception time according to the high-level signal, the low-level signal
  • the duration of the signal is equal to the duration of the transmitting time slot in the slave control relay station and the master control relay station
  • the duration of the high level signal is equal to the duration of the receiving time slot in the slave control relay station and the master control relay station.
  • the duration of the high-level signal in the control high-level and low-level signals is equal to the duration of the time slot of the corresponding relay station, and the duration of the low-level signal is equal to the duration of the time slot of the corresponding relay station, thereby improving the main control
  • the accuracy of the alignment of the uplink and downlink time slots of the relay station and the relay stations in the slave control station so as to more accurately avoid the period when any relay station in the master control station and the slave control station receives radio frequency signals , Other relay stations except any relay station transmit radio frequency signals.
  • the above-mentioned high-low level signal is a high-low level signal of multiple consecutive cycles.
  • both the slave control relay station and the master control relay station are time-division duplex single-frequency relay stations, and the transmit time slot and the receive time slot of the slave control relay station and the master control relay station alternate periodically .
  • the high and low level signals are high and low levels of continuous multiple cycles flat signal.
  • the high and low level signals of a single period are shown in FIG. 5 . Therefore, each of the periodically alternating transmitting time slots and receiving time slots in the slave control relay station and the master control relay station can be accurately adjusted through the continuous high and low level signals.
  • both the slave relay station and the master relay station are time-division duplex single-frequency relay stations, and the transmit time slot and the receive time slot in the slave relay station and the master relay station are periodic alternately.
  • the above-mentioned high and low level signals may also be high and low level signals of a single period. Since the transmit time slot and receive time slot of the slave control relay station and the master control repeater station are periodic, the transmission of one cycle of the slave control relay station and the master control relay station is adjusted through a single cycle of high and low level signals time slot and receiving time slot, other transmitting time slots and receiving time slots are also adjusted accordingly, so the effect of adjusting each transmitting time slot and receiving time slot of the slave control relay station and the master control relay station can also be achieved.
  • the master relay station is used for sending and receiving control data of the control channel
  • the slave control relay station is used for forwarding the service data of the traffic channel from the intercom terminal.
  • the master relay station is the relay station corresponding to the control channel
  • the slave control relay station is the relay station of the traffic channel.
  • the control channel is mainly used for the base station of the intercom relay system to broadcast control signaling and data, and to handle interactions such as intercom terminal login, authentication, and call application.
  • the intercom terminal usually waits on the control channel when it is in standby, so as to grasp the situation of the base station at any time.
  • the base station does not have any calls in progress, only the control channel is in the state of sending and receiving.
  • the intercom terminal needs to initiate a voice service or data service call, it will first apply for a call on the control channel, wait for the base station to authorize and allocate a service channel to perform the call service.
  • the master relay station is used to send and receive control data of the control channel.
  • the control data of the control channel includes interactive data such as intercom terminal login, authentication, and call application.
  • the slave control relay station is used to forward the service data from the service channel of the intercom terminal.
  • the service data of the service channel includes voice service data and data service data of the intercom terminal.
  • the repeater station of the control channel has a certain control ability to the repeater station of the service channel, so setting the repeater station of the control channel as the master repeater station is simple to operate and easy to implement.
  • the master relay station is further configured to send an access response to the intercom terminal according to the state of the slave control relay station after receiving the access request from the intercom terminal, so as to notify the intercom terminal Information related to the control repeater.
  • the master relay station is a relay station that controls the channel. After both the master relay station and the slave relay station have finished adjusting the radio frequency signal transmission time and/or radio frequency signal reception time according to the time slot control signal, the master control relay station is also used to broadcast signals to the intercom terminal. After receiving the access request from the intercom terminal, the master relay station obtains the status information of the slave relay station, and determines the status of the slave relay station based on the status information of the slave relay station. The status of the relay station sends an access response to the intercom terminal. When it is determined that the state of the controlled relay station is idle and available, an access response is sent to the intercom terminal to notify the intercom terminal of relevant information about the controlled relay station.
  • the information related to the controlled relay station includes the access information of the controlled relay station and the sending and receiving time slot information of the controlled relay station.
  • the intercom terminal performs data interaction with the slave control relay station based on the information related to the slave control relay station. Therefore, normal communication between the intercom relay system and the intercom terminal can be ensured.
  • the master relay station is a relay station for sending and receiving control data of a control channel
  • the slave control relay station includes a slave control center for forwarding service data of a traffic channel from an intercom terminal relay station, and the slave control relay station used to send and receive the control data of the control channel; when all the slave control relay stations in the slave control relay station do not receive the time slot control signal, the specified slave control relay station
  • the slave relay station sends the time slot control signal to the slave relay station except the designated slave relay station, and the designated slave relay station sends the time slot control signal to the master relay station, and the designated The slave relay station is a slave relay station for sending and receiving control data of the control channel.
  • the master relay station is a relay station that controls the channel.
  • the multiple relay stations include a control channel relay station and a service channel relay station. If all the slave relay stations in the slave control relay stations have not received the time slot control signal, for example, all the slave control relay stations have not received the time slot control signal within a period of time after power-on, it means that the master The control relay station fails to send the time slot control signal.
  • the slave control station designated in the slave control station can be used as an alternative master device, and the designated slave control station sends the signal to other relay stations. Time slot control signal.
  • the designated slave relay station is a preset slave relay station for sending and receiving control data of the control channel.
  • the designated slave relay station can be used as the Optionally, execute the time master function of the master relay station, and send time slot control signals to the master relay station and other slave relay stations, so as to avoid failure to control the master relay station due to failure of the master control relay station.
  • the radio frequency signal transmission time and/or the radio frequency signal reception time of the station and the slave relay station are examples of the master relay station.
  • the present application also provides an intercom relay system, as shown in FIG. 6 , the intercom relay system includes an integrated controller and at least two repeaters. As shown in FIG. 6 , at least two relay stations include a relay station 61 , a relay station 62 , a relay station 63 . . . a relay station 6N. Each repeater is an intercom repeater used to increase the communication distance of the intercom in the intercom cluster base station. Refer to Figure 6 for the connection structure of the integrated controller and each repeater in the intercom repeater system. As shown in FIG. 6 , each relay station is connected to an antenna respectively, and the reception of the uplink radio frequency signal and the transmission of the downlink radio frequency signal are realized through the antenna.
  • the integrated controller is used to send time slot control signals to each relay station; each relay station is used to adjust the radio frequency signal transmission time and/or radio frequency signal reception time of each relay station according to the time slot control signal, so as to During the period when any relay station among the relay stations is receiving radio frequency signals, other relay stations except any relay station are prevented from transmitting radio frequency signals.
  • each relay station is used to adjust the radio frequency signal transmission time and/or radio frequency signal reception time of each relay station according to the time slot control signal, including three implementation methods:
  • each relay station is used to adjust the radio frequency signal transmission time of each relay station according to the time slot control signal, so as to avoid any relay station receiving radio frequency signals in each relay station. Radio frequency signals are transmitted by other repeaters outside.
  • the intercom relay system can avoid the radio frequency transmission time of each relay station during the period when any relay station receives radio frequency signals, except for any relay station.
  • Other repeaters transmit radio frequency signals. It may be that the radio frequency transmission time of each relay station is controlled to be the same through the time slot control signal, that is, when any one or more repeaters in each relay station need to transmit radio frequency signals, they all perform radio frequency signal transmission at the same time. Since the radio frequency transmission time of each relay station is the same, there will be no situation that any relay station receives a radio frequency signal during the radio frequency transmission time, so in this case, the radio frequency reception time of each relay station can be the same or different . That is, each relay station may perform radio frequency signal reception at the same time, or may perform radio frequency signal reception at different times.
  • Each relay station is used to adjust the radio frequency signal receiving time of each relay station according to the time slot control signal, so as to avoid any relay station receiving radio frequency signals in each relay station. Radio frequency signals are transmitted by other repeaters outside.
  • the intercom relay system can avoid the radio frequency signal reception time of any relay station in each relay station by adjusting the radio frequency receiving time of each relay station, except for any relay station.
  • Other repeaters transmit radio frequency signals. This situation applies to the fact that the uplink and downlink time slots set by each relay station in each relay station are the same. For example, both uplink and downlink time slots stipulated in the DMR protocol are used.
  • the radio frequency transmission time of each relay station is also the same, thereby realizing that each relay station transmits radio frequency signals at the same time, avoiding During the period when any one of the relay stations receives the radio frequency signal, other relay stations except any one relay station transmit radio frequency signals.
  • Each relay station is used to adjust the radio frequency signal transmission time and radio frequency signal reception time of each relay station according to the time slot control signal, so as to avoid the period when any relay station in each relay station receives the radio frequency signal.
  • Radio frequency signals are transmitted by other repeater stations than one repeater station.
  • each relay station adjusts the radio frequency receiving time and the radio frequency transmitting time at the same time, so that the radio frequency transmitting time and the radio frequency receiving time of each relay station are the same.
  • the time slot control signal may be any type of signal.
  • the time slot control signal may be a square wave signal, a sine-cosine signal, or a triangular wave signal.
  • Each relay station sets a corresponding signal detection mode based on the signal characteristics of the time slot control signal.
  • each relay station uses this signal detection method to identify the signal characteristics of the time slot control signal, and adjusts the radio frequency signal transmission time and/or radio frequency of each relay station according to the signal characteristics of the time slot control signal. Signal reception time.
  • one of the signal characteristics of the time slot control signal is: a signal characteristic of a rectangular wave with only two values of "high” and “low".
  • “high” and “low” refer to two relative values.
  • the signal detection method in each relay station is: detecting the "high” value and its duration, and the "low” value and its duration in the time slot control signal.
  • a signal detection method of pulse detection may be used to identify the signal characteristics of the square wave signal.
  • each relay station adjusts the radio frequency signal transmission time and/or the radio frequency signal reception time according to the signal characteristics of the time slot control signal as: adjusting the radio frequency signal transmission time based on the "high” value of the time slot control signal, and/or, based on The "low” value of the time slot control signal adjusts the RF signal reception time.
  • the time slot control signal is a sine-cosine signal
  • one of the signal characteristics of the time slot control signal is: there are two maximum values that are reversed and equal in value.
  • the signal detection method in each relay station is: detecting the direction of the time slot control signal and recording the time point when the signal in each direction reaches the maximum value.
  • Each relay station adjusts the radio frequency signal transmission time and/or the radio frequency signal reception time according to the signal characteristics of the time slot control signal: adjust the radio frequency signal transmission time based on the time point of the maximum value of the time slot control signal in one direction, and/or , the radio frequency signal receiving time adjusted based on the time point of the maximum value of the time slot control signal in the other direction.
  • each relay station adjusts the radio frequency signal transmission time and/or radio frequency signal reception time of each relay station based on the time slot control signal. Therefore, for each relay station, the radio frequency signal transmission time and/or radio frequency signal reception time are adjusted based on the same signal, so as to avoid any relay station receiving radio frequency signals during any relay station, except for any relay station. In this way, even if the transmitting and receiving frequencies of each relay station are the same, the blocking and interference of the transmission of the downlink frequency on the reception of the uplink frequency in the intercom relay system can be avoided through time division multiplexing. Moreover, the application does not need to use a duplexer, which can reduce the cost of the intercom relay system and improve the deployment flexibility of the intercom relay system.
  • each relay station when each relay station is initialized or woken up, it adjusts the radio frequency signal transmission time and/or the radio frequency signal reception time according to the time slot control signal.
  • the specific operation of adjusting the radio frequency signal transmission time and/or radio frequency signal reception time inside each relay station according to the time slot control signal is the same as that of the slave control relay station adjusting the radio frequency signal transmission according to the time slot control signal in the above embodiment.
  • the specific operation of time and/or RF signal reception time is the same.
  • For instructions on adjusting the radio frequency signal transmission time and/or radio frequency signal reception time according to the time slot control signal when each relay station is initialized or awakened please refer to the above-mentioned slave controlled relay station according to the time slot control when initialized or awakened. Description of Embodiments of Signal Adjustment of Radio Frequency Signal Transmission Timing and/or Radio Frequency Signal Receiving Timing.
  • the time slot control signal is a high-low level signal
  • the high-low level signal includes a high-level signal and a low-level signal
  • each relay station is used to adjust the radio frequency signal of each relay station according to the high-level signal
  • the transmitting time and/or adjusting the receiving time of the radio frequency signal according to the low level signal; or, each repeater is used to adjust the radio frequency signal transmitting time of each repeater station according to the low level signal and/or adjust the radio frequency signal according to the high level signal receive time.
  • each relay station adjusts the radio frequency signal transmission time of each relay station according to the high-level signal and/or adjusts the radio frequency signal reception time according to the low-level signal; or, each relay station is used to adjust the radio frequency signal reception time according to the low-level signal;
  • the signal adjusts the radio frequency signal transmission time of each relay station and/or adjusts the radio frequency signal reception time according to the high-level signal.
  • the specific operation of adjusting the receiving time of the radio frequency signal by the high-level signal is the same, and details may refer to the descriptions in the corresponding embodiments above.
  • the at least two relay stations include a first relay station for forwarding traffic data from a traffic channel of the intercom terminal, and a second relay station for sending and receiving control data of a control channel;
  • the second relay station sends the time slot control signal to the first relay station;
  • the first relay station is used to adjust the time slot control signal according to the time slot control signal
  • the radio frequency signal transmission time and/or radio frequency signal reception time of a relay station, and the second relay station is also used to adjust the radio frequency signal transmission time and/or radio frequency signal reception time of the second relay station according to the time slot control signal, It is avoided that any relay station except any one relay station transmits radio frequency signals during the period when any one of the first relay station and the second relay station receives the radio frequency signal.
  • the second relay station may serve as an alternative master control device, and the second relay station may send the time slot control signal to the first relay station.
  • the second relay station can be used as an alternative to perform the time master control of the integrated controller
  • the function is to send a time slot control signal to the first relay station, so as to avoid failure to control the radio frequency signal transmission time and/or radio frequency signal reception time of each relay station due to failure of the integrated controller.
  • the second relay station when the second relay station is used as an alternative master control device, and the second relay station sends a time slot control signal to the first relay station, the data interaction mode between the first relay station and the second relay station As well as the specific operations for each relay station to adjust the radio frequency signal transmission time and/or radio frequency signal reception time according to the time slot control signal, refer to the description of the embodiment corresponding to FIG. 2 above. That is, when the integrated controller cannot send time slot control signals to at least two relay stations, the designated relay station among the at least two relay stations acts as the master relay station, and the other relay stations serve as slave control relay stations, Execute the flow operations of adjusting the radio frequency signal transmission time and/or the radio frequency signal reception time according to the time slot control signal respectively.
  • the integrated controller fails, the downlink frequency caused by any relay station in the intercom relay system receiving radio frequency signals and other relay stations except any relay station transmitting radio frequency signals can be avoided. Blocking and interference of transmissions to reception on uplink frequencies.
  • the present application also provides a method for controlling radio frequency transmission and reception of an intercom relay system.
  • the intercom relay system includes a master control repeater station and a slave control repeater station. The method is applied to the master control repeater station.
  • a method for radio frequency transceiver control of an intercom relay system includes the following steps:
  • a method for controlling radio frequency transmission and reception of an intercom relay system in this embodiment is applied to the main control relay station in the above-mentioned intercom relay system.
  • the specific operation process please refer to the above-mentioned main control relay of the intercom relay system
  • the specific operation instructions of the platform will not be described in detail here.
  • the present application also provides a method for controlling radio frequency transmission and reception of an intercom relay system.
  • the intercom relay system includes a master control relay station and a slave control relay station. This method is applied to a slave control relay station, as shown in FIG. 8
  • a method for controlling radio frequency transmission and reception of an intercom relay system comprises the following steps:
  • the radio frequency transceiver control method of the intercom relay system in this embodiment is applied to the slave control relay station in the above-mentioned intercom relay system, and the specific operation process can be found in the above-mentioned slave control relay of the intercom relay system
  • the specific operation instructions of the platform will not be described in detail here.
  • the application also provides a radio frequency transceiver control device for an intercom relay system.
  • the intercom relay system includes a master control relay station and a slave control relay station. As shown in Figure 9, the device is applied to the master control relay station , including a generation module 902 , a first adjustment module 904 and a sending module 906 .
  • the generation module 902 is used to generate a time slot control signal; the first adjustment module 904 is used to adjust the radio frequency signal transmission time and/or radio frequency signal reception time of the master relay station according to the time slot control signal; the sending module 906 is used to Send a time slot control signal to the slave control relay station to instruct the slave control relay station to adjust the radio frequency signal transmission time and/or radio frequency signal reception time of the slave control relay station according to the time slot control signal, so as to avoid During the period when any relay station in the station and the slave relay station receives radio frequency signals, other relay stations except any relay station transmit radio frequency signals.
  • Each module in the radio frequency transceiver control device of the above-mentioned intercom relay system can be fully or partially realized by software, hardware and a combination thereof.
  • the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, and can also be stored in the memory of the computer device in the form of software, so that the processor can invoke and execute the corresponding operations of the above-mentioned modules.
  • the application also provides a radio frequency transceiver control device for an intercom relay system.
  • the intercom relay system includes a master control relay station and a slave control relay station. As shown in Figure 10, the device is applied to a slave control relay station , including a receiving module 1002 and a second adjusting module 1004.
  • the receiving module 1002 is configured to receive a time slot control signal from the master relay station, and the master control relay station adjusts the radio frequency signal transmission time and/or radio frequency signal reception time of the master relay station according to the time slot control signal; the second adjustment Module 1004, configured to adjust the radio frequency signal transmission time and/or radio frequency signal reception time of the slave relay station according to the time slot control signal, so as to avoid receiving radio frequency by any relay station in the master relay station and the slave relay station During the signal period, other relay stations except any relay station transmit radio frequency signals.
  • Each module in the radio frequency transceiver control device of the above-mentioned intercom relay system can be fully or partially realized by software, hardware and a combination thereof.
  • the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, and can also be stored in the memory of the computer device in the form of software, so that the processor can invoke and execute the corresponding operations of the above-mentioned modules.
  • a computer device is provided.
  • the computer device may be the above-mentioned master control relay station, and its internal structure may be as shown in FIG. 11 .
  • the computer device includes a processor, memory, network interface and database connected by a system bus. Wherein, the processor of the computer device is used to provide calculation and control capabilities.
  • the memory of the computer device includes a non-volatile storage medium and an internal memory.
  • the non-volatile storage medium stores an operating system, computer readable instructions and a database.
  • the internal memory provides an environment for the execution of the operating system and computer readable instructions in the non-volatile storage medium.
  • the network interface of the computer device is used to connect with the external slave control relay station, so as to perform data interaction with the external slave control relay station.
  • a computer device is provided.
  • the computer device may be the above-mentioned slave control relay station, and its internal structure may be shown in FIG. 11 .
  • the computer device includes a processor, memory, network interface and database connected by a system bus. Wherein, the processor of the computer device is used to provide calculation and control capabilities.
  • the memory of the computer device includes a non-volatile storage medium and an internal memory.
  • the non-volatile storage medium stores an operating system, computer readable instructions and a database.
  • the internal memory provides an environment for the execution of the operating system and computer readable instructions in the non-volatile storage medium.
  • the network interface of the computer equipment is used to connect with the external master control relay station, so as to perform data interaction with the external master control repeater station.
  • FIG. 11 is only a block diagram of a part of the structure related to the solution of this application, and does not constitute a limitation on the computer equipment on which the solution of this application is applied.
  • the specific computer equipment can be More or fewer components than shown in the figures may be included, or some components may be combined, or have a different arrangement of components.
  • a computer device including a memory, a processor, and computer-readable instructions stored in the memory and operable on the processor.
  • the processor executes the computer-readable instructions, the following steps are implemented: when generating Slot control signal; adjust the radio frequency signal transmission time and/or radio frequency signal reception time of the master relay station according to the time slot control signal; send a time slot control signal to the slave control relay station to instruct the slave control relay station
  • the control signal adjusts the radio frequency signal transmission time and/or the radio frequency signal reception time of the slave control relay station, so as to avoid the period when any one of the master control repeater station and the slave control relay station receives the radio frequency signal, except for any Other repeaters besides the repeater transmit radio frequency signals.
  • a computer device including a memory, a processor, and computer-readable instructions stored on the memory and operable on the processor.
  • the processor executes the computer-readable instructions, the following steps are implemented: receiving The time slot control signal of the master control repeater station, the master control repeater station adjusts the radio frequency signal transmission time and/or the radio frequency signal reception time of the master control repeater station according to the time slot control signal; adjusts the slave control repeater station according to the time slot control signal RF signal transmission time and/or RF signal reception time, to avoid any relay station except any relay station receiving RF signal
  • the station transmits radio frequency signals.
  • a computer-readable storage medium on which computer-readable instructions are stored.
  • the following steps are implemented: generating a time slot control signal; adjusting the time slot according to the time slot control signal Radio frequency signal transmission time and/or radio frequency signal reception time of the master control relay station; send a time slot control signal to the slave control relay station to instruct the slave control relay station to adjust the radio frequency of the slave control relay station according to the time slot control signal Signal transmission time and/or RF signal reception time to avoid any relay station except any relay station from transmitting during the period when any one of the master relay station and slave control relay station is receiving RF signals RF signal.
  • a computer-readable storage medium on which computer-readable instructions are stored, and when the computer-readable instructions are executed by a processor, the following steps are implemented: receiving a time slot control signal from a master relay station , the master control relay station adjusts the radio frequency signal transmission time and/or radio frequency signal reception time of the master control relay station according to the time slot control signal; adjusts the radio frequency signal transmission time and/or radio frequency signal of the slave control relay station according to the time slot control signal
  • the receiving time is used to avoid transmitting radio frequency signals by other relay stations except any relay station during the period when any one of the master relay station and the slave control relay station receives radio frequency signals.
  • Nonvolatile memory can include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory.
  • Volatile memory can include random access memory (RAM) or external cache memory.
  • RAM random access memory
  • RAM is available in many forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Chain Synchlink DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

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Abstract

本申请涉及一种对讲中继系统及其射频收发控制方法、装置、计算机设备和存储介质，对讲中继系统包括主控中继台和从控中继台；主控中继台用于向从控中继台发送时隙控制信号；从控中继台用于根据时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，且主控中继台还用于根据时隙控制信号调整主控中继台的射频信号发射时间和/或射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。上述对讲中继系统无需使用双工器即可避免对讲中继系统中下行频率的发射对上行频率的接收的阻塞效应，从而降低对讲中继系统的成本以及提高对讲中继系统的部署灵活性。

Description

对讲中继系统及其射频收发控制方法、装置
相关申请的交叉引用
本申请要求于2021年8月25日提交中国专利局，申请号为202110980339.2，申请名称为“对讲中继系统及其射频收发控制方法、装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及对讲技术领域，特别是涉及一种对讲中继系统及其射频收发控制方法、装置、计算机设备和存储介质。
背景技术
现有的对讲中继系统包含多个中继台。对讲中继系统中的中继台，无论是模拟制式还是数字制式，一般采取收发异频的方式，即上行频率用于接收，下行频率用于发射，上行频率和下行频率之间相隔足够的间隔。为了防止下行频率的发射对上行频率的接收的阻塞效应，如图1所示，通常会在对讲中继系统中增加一个双工器。双工器的本质是两个带通滤波器，两个带通滤波器的通带不重叠，上行频率和下行频率分别处于其中一个通带内。双工器的作用在于隔离收发频率，降低射频的阻塞效应。若不增加双工器，对讲中继系统的下行发射信号将对对讲中继系统的上行接收信号造成很大的阻塞和干扰。
然而，在部署对讲中继系统时，由于不同的对讲中继系统，其中继台的上下行频率不同，因此需要根据不同对讲中继系统的不同频率定制对应的双工器，从而导致一方面对讲中继系统的成本较高，另一方面对讲中继系统的部署很不方便，一旦对讲中继系统的上下行频率变化，可能需要重新定制双工器。
发明内容
基于此，有必要针对上述技术问题，提供一种无需使用双工器即可避免对讲中继系统中下行频率的发射对上行频率的接收的阻塞效应，从而降低对讲中继系统的成本以及提高对讲中继系统的部署灵活性的对讲中继系统及其射频收发控制方法、装置、计算机设备和存储介质。
一种对讲中继系统，对讲中继系统包括主控中继台和从控中继台；主控中继台用于向从控中继台发送时隙控制信号；和，从控中继台用于根据时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，且主控中继台还用于根据时隙控制信号调整主控中继台的射频信号发射时间和/或射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
在其中一个实施例中，主控中继台和从控中继台均为时分双工的单频中继台。
在其中一个实施例中，从控中继台在初始化时或者被唤醒时，根据时隙控制信号调整射频信号发射时间和/或射频信号接收时间。
在其中一个实施例中，主控中继台还用于根据主控中继台的射频信号发送时间和/或射频信号接收时间生成时隙控制信号。
在其中一个实施例中，时隙控制信号为高低电平信号，高低电平信号包含高电平信号和低电平信号，从控中继台和主控中继台根据高电平信号调整射频信号发射时间，从控中继台和主控中继台根据低电平信号调整射频信号接收时间。
在其中一个实施例中，高电平信号的时长与从控中继台以及主控中继台中的发射时隙的时长相等，低电平信号的时长与从控中继台以及主控中继台中的接收时隙的时长相等。
在其中一个实施例中，时隙控制信号为高低电平信号，高低电平信号包含高电平信号和低电平信号，从控中继台和主控中继台根据低电平信号调整射频信号发射时间，从控中继台和主控中继台根据高电平信号调整射频信号接收时间。
在其中一个实施例中，低电平信号的时长与从控中继台以及主控中继台中的发射时隙的时长相等，高电平信号的时长与从控中继台以及主控中继台中的接收时隙的时长相等。
在其中一个实施例中，高低电平信号为连续多个周期的高低电平信号。
在其中一个实施例中，主控中继台用于发送和接收控制信道的控制数据，从控中继台用于转发来自对讲终端的业务信道的业务数据。
在其中一个实施例中，主控中继台还用于在接收到来自对讲终端的接入请求之后，根据从控中继台的状态向对讲终端发送接入响应，以通知对讲终端从控中继台相关的信息。
在其中一个实施例中，主控中继台为用于发送和接收控制信道的控制数据的中继台，从控中继台包括用于转发来自对讲终端的业务信道的业务数据的从控中继台、以及用于发送和接收控制信道的控制数据的从控中继台；从控中继台中所有的从控中继台均未接收到时隙控制信号时，从控中继台中指定的从控中继台向除指定的从控中继台之外的从控中继台发送时隙控制信号，以及指定的从控中继台向主控中继台发送时隙控制信号，指定的从控中继台为用于发送和接收控制信道的控制数据的从控中继台。
一种对讲中继系统，对讲中继系统包括集成控制器和至少两台中继台；集成控制器用于向各中继台发送时隙控制信号；和，各中继台用于根据时隙控制信号调整各中继台的射频信号发射时间和/或射频信号接收时间，以避免在各中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
在其中一个实施例中，各中继台在初始化时或者被唤醒时，根据时隙控制信号调整射频信号发射时间和/或射频信号接收时间。
在其中一个实施例中，时隙控制信号为高低电平信号，高低电平信号包含高电平信号和低电平信号，各中继台用于根据高电平信号调整各中继台的射频信号发射时间和/或根据低电平信号调整射频信号接收时间；或，各中继台用于根据低电平信号调整各中继台的射频信号发射时间和/或根据高电平信号调整射频信号接收时间。
在其中一个实施例中，至少两台中继台中包含用于转发来自对讲终端的业务信道的业务数据的第一中继台、以及用于发送和接收控制信道的控制数据的第二中继台；至少两台中继台中所有中继台均未接收到时隙控制信号时，第二中继台向第一中继台发送时隙控制信号；和，第一中继台用于根据时隙控制信号调整第一中继台的射频信号发射时间和/或射频信号接收时间，且第二中继台还用于根据时隙控制信号调整第二中继台的射频信号发射时间和/或射频信号接收时间，以避免在第一中继台和第二中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
一种对讲中继系统的射频收发控制方法，对讲中继系统包括主控中继台和从控中继台，该方法应用于主控中继台，该方法包括：生成时隙控制信号；根据时隙控制信号调整主控中继台的射频信号发射时间和/或射频信号接收时间；和，向从控中继台发送时隙控制信号， 以指示从控中继台根据时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
一种对讲中继系统的射频收发控制方法，对讲中继系统包括主控中继台和从控中继台，该方法应用于从控中继台，该方法包括：接收来自主控中继台的时隙控制信号，主控中继台根据时隙控制信号调整主控中继台射频信号发射时间和/或射频信号接收时间；和，根据时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
一种对讲中继系统的射频收发控制装置，对讲中继系统包括主控中继台和从控中继台，该装置应用于主控中继台，该装置包括：生成模块，用于生成时隙控制信号；第一调整模块，用于根据时隙控制信号调整主控中继台的射频信号发射时间和/或射频信号接收时间；发送模块，用于向从控中继台发送时隙控制信号，以指示从控中继台根据时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
一种对讲中继系统的射频收发控制装置，对讲中继系统包括主控中继台和从控中继台，该装置应用于从控中继台，该装置包括：接收模块，用于接收来自主控中继台的时隙控制信号，主控中继台根据时隙控制信号调整主控中继台射频信号发射时间和/或射频信号接收时间；和，第二调整模块，用于根据时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
一种计算机设备，包括存储器及一个或多个处理器，存储器中储存有计算机可读指令，计算机可读指令被一个或多个处理器执行时，使得一个或多个处理器执行如上对讲中继系统的射频收发控制方法的步骤。
一个或多个存储有计算机可读指令的非易失性计算机可读存储介质，计算机可读指令被一个或多个处理器执行时，使得一个或多个处理器执行如上对讲中继系统的射频收发控制方法的步骤。
上述对讲中继系统及其射频收发控制方法、装置、计算机设备和存储介质，主控中继台向从控中继台发送时隙控制信号，从控中继台基于时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，同时，主控中继台基于时隙控制信号调整主控中继台的射频信号发射时间和/或射频信号接收时间。因此，对于主控中继台和从控中继台，均基于同一信号调整射频信号发射时间和/或射频信号接收时间，避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号，如此，即便是各中继台收发频率相同，也可以通过时分复用的方式避免对讲中继系统中下行频率的发射对上行频率的接收的阻塞和干扰，而且本申请无需使用双工器，能够降低对讲中继系统的成本以及提高对讲中继系统的部署灵活性。
另外，上述对讲中继系统，通过集成控制器向各中继台发送时隙控制信号，各中继台用于根据时隙控制信号调整各中继台的射频信号发射时间和/或射频信号接收时间，以避免在各中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。如此，即便是各中继台收发频率相同，也可以通过时分复用的方式避免对讲中继系统中下行频率的发射对上行频率的接收的阻塞和干扰，而且本申请无需使用双工器，能够降低对 讲中继系统的成本以及提高对讲中继系统的部署灵活性。
附图说明
图1为本申请一个或多个实施例中现有对讲中继系统的结构连接示意图；
图2为本申请一个或多个实施例中本申请的一种对讲中继系统的结构连接示意图；
图3为本申请一个或多个实施例中本申请的一种对讲中继系统的收发时隙对齐的示意图；
图4为本申请一个或多个实施例中本申请的一种对讲中继系统的主控中继台和从控中继台的内部信息处理的流程示意图；
图5为本申请一个或多个实施例中通过高低电平信号对从控中继台和主控中继台进行时隙对齐的示意图；
图6为本申请一个或多个实施例中本申请的一种对讲中继系统的结构连接示意图；
图7为本申请一个或多个实施例中本申请的一种对讲中继系统的射频收发控制方法的流程示意图；
图8为本申请一个或多个实施例中本申请的一种对讲中继系统的射频收发控制方法的流程示意图；
图9为本申请一个或多个实施例中本申请的一种对讲中继系统的射频收发控制装置的结构框图；
图10为本申请一个或多个实施例中本申请的一种对讲中继系统的射频收发控制装置的结构框图；
图11为本申请一个或多个实施例中计算机设备的内部结构图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
本申请提供一种对讲中继系统。在一个实施例中，一种对讲中继系统包括主控中继台和从控中继台。从控中继台可以是一台或至少两台。如图2所示，当从控中继台为多台时，多台从控中继台包括从控中继台21、从控中继台22……从控中继台2N。主控中继台和从控中继台均为对讲集群基站中用于增大对讲机通讯距离的对讲机中继台。在对讲中继系统中主控中继台和从控中继台的连接结构参见图2所示。如图2所示，主控中继台和从控中继台分别与天线连接，通过天线实现上行射频信号的接收和下行射频信号的发射。其中，在实现射频信号的发射以及接收时，主控中继台和从控中继台之间不存在主控和从控的关系。
本实施例中，主控中继台向从控中继台发送时隙控制信号，从控中继台根据时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，且主控中继台根据时隙控制信号调整主控中继台的射频信号发射时间和/或射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。此种情况下，主控中继台和从控中继台之间为主控和从控的关系。此处的主控和从控，指的是作为主控的中继台通过发送时隙控制信号的方式，控制作为从控的中继台内部的射频信号发射时间和/或射频信号接收时间。
本实施例中，主控中继台和从控中继台均根据时隙控制信号调整射频信号发射时间和/ 或射频信号接收时间，包括三种实现方式：
其一：从控中继台用于根据时隙控制信号调整从控中继台的射频信号发射时间，且主控中继台还用于根据时隙控制信号调整主控中继台的射频信号发射时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
这一实现方式中，对讲中继系统通过调整从控中继台以及主控中继台的射频发射时间，即可避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。可以是，通过时隙控制信号控制主控中继台和从控中继台的射频发射时间相同，即主控中继台和从控中继台中任意一台或多台中继器需要发射射频信号时，均在同一时间进行射频信号发射。由于主控中继台和从控中继台的射频发射时间相同，因此不会存在射频发射时间内任一中继台接收射频信号的情况，因此此种情况下，主控中继台和从控中继台的射频接收时间可以相同也可以不相同。即，主控中继台和从控中继台可以在同一时间进行射频信号接收，也可以在不同时间进行射频信号接收。
其二：从控中继台用于根据时隙控制信号调整从控中继台的射频信号接收时间，且主控中继台还用于根据时隙控制信号调整主控中继台的射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
这一实现方式中，对讲中继系统通过调整从控中继台以及主控中继台的射频接收时间，即可避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。这种情况适用于主控中继台和从控中继台中各中继台设定的上下行时隙相同。如，均采用DMR协议规定的上下行时隙。此种情况下，通过时隙控制信号控制主控中继台和从控中继台的射频接收时间相同之后，主控中继台和从控中继台的射频发射时间也相同，进而实现主控中继台和从控中继台在同一时间进行射频信号发射，避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
其三：从控中继台用于根据时隙控制信号调整从控中继台的射频信号发射时间以及射频信号接收时间，且主控中继台还用于根据时隙控制信号调整主控中继台的射频信号发射时间以及射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
这一实现方式中，从控中继台以及主控中继台同时调整了射频接收时间以及射频发射时间，使得从控中继台以及主控中继台的射频发射时间相同以及射频接收时间相同。此种情况下，能够控制对讲中继系统中从控中继台以及主控中继台的上行时隙的时间严格对齐以及下行时隙的时间也严格对齐，进而更加精准地确保对讲中继系统中下行时隙不会占据上行时隙的时间段，从而避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
此外，本实施例中，时隙控制信号可以是任意类型的信号。如，时隙控制信号可以是方波信号、正余弦信号或三角波信号等。主控中继台和从控中继台基于时隙控制信号的信号特性设置对应的信号检测方式。当从控中继台接收到时隙控制信号时，采用该信号检测方式识别出时隙控制信号的信号特性，根据时隙控制信号的信号特性调整从控中继台的射频信号发射时间和/或射频信号接收时间。同样地，主控中继台采用该采用该信号检测方式识别出时隙控制信号的信号特性，根据时隙控制信号的信号特性调整主控中继台的射频信号发射时间 和/或射频信号接收时间。
例如，在具体工作中，时隙控制信号为方波信号时，时隙控制信号的其中一个信号特性为：矩形波且只有“高”和“低”两个值的信号特性。此处的“高”和“低”指的是相对的两个值。主控中继台和从控中继台中的信号检测方式为：检测出时隙控制信号中“高”值及其持续时长、以及“低”值及其持续时长。因此，可识别出时隙控制信号的矩形波的信号特性以及“高”和“低”两个值的信号特性。具体地，可采用脉冲检测的信号检测方式识别方波信号的信号特性。此时，主控中继台和从控中继台根据时隙控制信号的信号特性调整射频信号发射时间和/或射频信号接收时间为：基于时隙控制信号的“高”值调整射频信号发射时间，和/或，基于时隙控制信号的“低”值调整射频信号接收时间。
例如，在具体工作中，时隙控制信号为正余弦信号时，时隙控制信号的其中一个信号特性为：存在反向且数值相等的两个最值。主控中继台和从控中继台中的信号检测方式为：检测时隙控制信号的方向并记录各方向上信号达到最大值时的时间点。主控中继台和从控中继台根据时隙控制信号的信号特性调整射频信号发射时间和/或射频信号接收时间为：基于时隙控制信号的一个方向上的最大值的时间点调整射频信号发射时间，和/或，基于时隙控制信号的另一个方向上的最大值的时间点调整的射频信号接收时间。
上述对讲中继系统，主控中继台向从控中继台发送时隙控制信号，从控中继台基于时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，同时，主控中继台基于时隙控制信号调整主控中继台的射频信号发射时间和/或射频信号接收时间。因此，对于主控中继台和从控中继台，均基于同一信号调整射频信号发射时间和/或射频信号接收时间，避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号，如此，即便是各中继台收发频率相同，也可以通过时分复用的方式避免对讲中继系统中下行频率的发射对上行频率的接收的阻塞和干扰，而且本申请无需使用双工器，能够降低对讲中继系统的成本以及提高对讲中继系统的部署灵活性。
在一个实施例中，上述主控中继台和上述从控中继台均为时分双工的单频中继台。
该实施例中，主控中继台和从控中继台均为单频中继台，即主控中继台和从控中继台中任一中继台的收发频率相同，因此无需双工器进行收发频率隔离。此外，主控中继台和从控中继台均为时分双工的中继台，具体可以是基于DMR协议的时分双工的中继台。此时，如图3所示，从控中继台根据时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，且主控中继台根据时隙控制信号调整主控中继台的射频信号发射时间和/或射频信号接收时间，以使得从控中继台和主控中继台中各中继台的上行时隙对齐以及下行时隙对齐，确保下行时隙不会占据上行时隙的时间段，从而避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
在一个实施例中，从控中继台在初始化时或者被唤醒时，根据时隙控制信号调整射频信号发射时间和/或射频信号接收时间。
该实施例中，若从控中继台在初始化之前或者被唤醒之前接收到时隙控制信号，则在初始化时或者被唤醒时根据时隙控制信号调整射频信号发射时间和/或射频信号接收时间。反之，则在初始化之后或者被唤醒之后，等待接收时隙控制信号，进而根据时隙控制信号调整射频信号发射时间和/或射频信号接收时间。
此外，主控中继台在射频信号发射之前，生成时隙控制信号，将时隙控制信号发送到从控中继台，并根据时隙控制信号调整射频信号发射时间和/或射频信号接收时间。因此，可确保对讲中继系统在与对讲终端进行数据交互之前，完成对主控中继台和从控中继台的射频 信号发射时间和/或射频信号接收时间的调整，避免与对讲终端进行数据交互时下行发射信号将对对讲中继系统的上行接收信号造成的阻塞和干扰。
例如，如图4所示，主控中继台在发射广播信号之前，向从控中继台输出时隙控制信号。主控中继台可以是在上电启动，初始化或被唤醒之前，向从控中继台输出时隙控制信号。同时，主控中继台内部也基于时隙控制信号同步主控中继台内部的收/发时隙时间(图4未示出)。从控中继台在上电启动，初始化或被唤醒之前，判断是否接收到时隙控制信号。若是，则执行根据时隙控制信号同步从控中继台内部的收/发时隙时间。若否，从控中继台处于等待状态，直至接收到时隙控制信号。
当主控中继台和从控中继台均基于时隙控制信号同步内部的收/发时隙时间之后，主控中继台和从控中继台进入对讲终端数据的转发操作流程。具体地，如图4所示，主控中继台根据时隙控制信号所确定的下行时隙发送广播信号，并在根据时隙控制信号所确定的上行时隙判断是否有来自对讲终端的上行呼叫请求。若接收到上行呼叫请求，则在根据时隙控制信号所确定的下行时隙发送下行响应。在该下行响应中包括关于特定中继台的信息，从而对讲终端能够将业务信道的业务数据发送给该特定中继台。若没有空闲的中继台可以使用，则在该下行响应中将该情况通知给对讲终端，以便对讲终端随后再尝试上行呼叫请求。
优选地，从控中继台根据时隙控制信号调整接收时间和发送时间，从而保持与主控中继台和其他从控中继台的同步。若在根据时隙控制信号所确定的上行时隙接收到上行业务数据，则在随后的下行时隙将所接收到的上行业务数据进行转发。
因此，能够在主控中继台和从控中继台执行具体的对讲业务操作之前，各中继台的收/发时隙时间的同步，从而避免在执行具体的对讲业务操作时，任一中继台接收射频信号的期间其他中继台发射射频信号，造成对讲中继系统中下行频率的发射对上行频率的接收的阻塞和干扰。
在一个实施例中，主控中继台还用于根据主控中继台的射频信号发送时间和/或射频信号接收时间生成时隙控制信号。
该实施例中，主控中继台根据主控中继台的射频信号发送时间生成时隙控制信号。或，主控中继台根据主控中继台的射频信号接收时间生成时隙控制信号。或，主控中继台根据主控中继台的射频信号发送时间和射频信号接收时间生成时隙控制信号。该实施例，主控中继台基于其内部的射频信号发送时间和/或射频信号接收时间生成时隙控制信号，无需增加额外的设备以辅助生成时隙控制信号，操作简单且可行性高，适用场景更加广泛。
在一个实施例中，时隙控制信号为高低电平信号，高低电平信号包含高电平信号和低电平信号，从控中继台和主控中继台根据高电平信号调整射频信号发射时间，从控中继台和主控中继台根据低电平信号调整射频信号接收时间。
该实施例中，高电平信号的时长与从控中继台以及主控中继台中的发射时隙的时长相等，低电平信号的时长与从控中继台以及主控中继台中的接收时隙的时长相等。
在一个实施例中，时隙控制信号为高低电平信号，高低电平信号包含高电平信号和低电平信号，从控中继台和主控中继台根据低电平信号调整射频信号发射时间，从控中继台和主控中继台根据高电平信号调整射频信号接收时间。
该实施例中，低电平信号的时长与从控中继台以及主控中继台中的发射时隙的时长相等，高电平信号的时长与从控中继台以及主控中继台中的接收时隙的时长相等。
以上两个实施例中，时隙控制信号为高低电平信号，高低电平信号包含高电平信号和低电平信号。可以基于高电平信号调整射频信号接收时间、基于低电平信号调整射频信号发射 时间。或，基于高电平信号调整射频信号发射时间、基于低电平信号调整射频信号接收时间。
当从控中继台和主控中继台根据高电平信号调整射频信号发射时间、从控中继台和主控中继台根据低电平信号调整射频信号接收时间时，高电平信号的时长与从控中继台以及主控中继台中的发射时隙的时长相等，低电平信号的时长与从控中继台以及主控中继台中的接收时隙的时长相等。例如，以下给出一个通过高低电平信号对从控中继台和主控中继台进行时隙对齐的例子，参见图5所示：
主控中继台发出高低电平信号。低电平信号代表主控中继台处于接收状态，从控中继台也处于接收状态。如图5所示，接收状态的时间段为T0。当高低电平信号从低电平信号变为高电平信号时，如图5所示，高低电平信号先进入发射功放的功率爬坡时间T1，从控中继台接收到高电平信号或电平信号或从低到高的跳变信号。此时，如果从控中继台有转发呼叫的业务需求，也立即进入射频信号发射准备阶段。如果没有中转业务的业务需求，则处于等待状态。如图5所示，发射功放的功率稳定后，主控中继台和从控中继台进入发射状态，发射状态的时间段为T2。此时，从控中继台以及主控中继台中的接收时隙的时长为T0，从控中继台以及主控中继台中的发射时隙的时长为T2。
当从控中继台和主控中继台根据低电平信号调整射频信号发射时间、从控中继台和主控中继台根据高电平信号调整射频信号接收时间时，低电平信号的时长与从控中继台以及主控中继台中的发射时隙的时长相等，高电平信号的时长与从控中继台以及主控中继台中的接收时隙的时长相等。以上述时隙对齐的例子为说明，将上述例子中的低电平信号代表中继台处于发射状态，高电平信号代表中继台处于接收状态。此时，从控中继台以及主控中继台中的接收时隙的时长为T2，从控中继台以及主控中继台中的发射时隙的时长为T0。
因此，控制高低电平信号中高电平信号的时长与其对应的中继台的时隙的时长相等、且低电平信号的时长与其对应的中继台的时隙的时长相等，从而提高主控中继台以及从控中继台中各中继台的上下行时隙对齐的准确性，进而更加准确地避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
在一个实施例中，上述高低电平信号为连续多个周期的高低电平信号。
该实施例中，从控中继台和主控中继台均为时分双工的单频中继台，且从控中继台和主控中继台中发射时隙和接收时隙周期性交替。在使用高低电平信号作为时隙控制信号以调整从控中继台和主控中继台的射频信号发射时间和/或射频信号接收时间时，高低电平信号为连续多个周期的高低电平信号。连续多个周期的高低电平信号中，单个周期的高低电平信号如图5所示。因此，通过连续多个周期的高低电平信号可以准确调整从控中继台和主控中继台中周期性交替的发射时隙和接收时隙中的各个发射时隙和接收时隙。
在其他实施例中，从控中继台和主控中继台均为时分双工的单频中继台，且从控中继台和主控中继台中发射时隙和接收时隙周期性交替。上述高低电平信号也可以是单个周期的高低电平信号。由于从控中继台和主控中继台的发射时隙和接收时隙为周期性，通过单个周期的高低电平信号调整从控中继台和主控中继台的其中一个周期的发射时隙和接收时隙，其他发射时隙和接收时隙也随之调整，因此也可以达到调整从控中继台和主控中继台的各个发射时隙和接收时隙的效果。
使用连续多个周期的高低电平信号调整从控中继台和主控中继台的各个发射时隙和接收时隙，保证各个发射时隙和接收时隙均能对齐，提高了对讲中继系统中从控中继台和主控中继台的上下行时隙对齐的准确性。使用单个周期的高低电平信号调整从控中继台和主控中继 台的各个发射时隙和接收时隙，无需主控中继台持续性输出高低电平信号，可以节省主控中继台的资源损耗。
在一个实施例中，主控中继台用于发送和接收控制信道的控制数据，从控中继台用于转发来自对讲终端的业务信道的业务数据。
该实施例中，主控中继台为控制信道对应的中继台，从控中继台为业务信道的中继台。控制信道主要用于对讲中继系统的基站广播控制信令和数据，处理对讲终端登录、鉴权、呼叫申请等交互。其中，对讲终端机待机时候一般守候在控制信道上，随时掌握基站的情况。当基站没有任何呼叫进行时候，只有控制信道处于收发的状态。这时候对讲终端如果需要发起语音业务或者数据业务呼叫，会先在控制信道上进行呼叫申请，等待基站授权并分配业务信道以执行进行呼叫业务。
主控中继台用于发送和接收控制信道的控制数据。控制信道的控制数据包括对讲终端登录、鉴权、呼叫申请等交互数据。从控中继台用于转发来自对讲终端的业务信道的业务数据。业务信道的业务数据包括对讲终端的语音业务数据和数据业务数据。
在对讲中继系统中，控制信道的中继台对业务信道的中继台具备一定的控制能力，因此将控制信道的中继台设置为主控中继台，操作简单，易于实现。
在一个实施例中，主控中继台还用于在接收到来自对讲终端的接入请求之后，根据从控中继台的状态向对讲终端发送接入响应，以通知对讲终端从控中继台相关的信息。
该实施例中，主控中继台为控制信道的中继台。在主控中继台和从控中继台均已结束根据时隙控制信号调整射频信号发射时间和/或射频信号接收时间之后，主控中继台还用于向对讲终端广播信号。在接收到来自对讲终端的接入请求之后，主控中继台获取从控中继台的状态信息，基于从控中继台的状态信息确定从控中继台的状态，根据从控中继台的状态向对讲终端发送接入响应。当确定从控中继台的状态为空闲且可以使用的状态时，向对讲终端发送接入响应，以通知对讲终端从控中继台相关的信息。从控中继台相关的信息包括从控中继台的接入信息以及从控中继台的收发时隙信息。对讲终端基于从控中继台相关的信息与从控中继台进行数据交互。因此，可确保对讲中继系统与对讲终端的正常通信。
在一个实施例中，主控中继台为用于发送和接收控制信道的控制数据的中继台，从控中继台包括用于转发来自对讲终端的业务信道的业务数据的从控中继台、以及用于发送和接收控制信道的控制数据的从控中继台；从控中继台中所有的从控中继台均未接收到时隙控制信号时，从控中继台中指定的从控中继台向除指定的从控中继台之外的从控中继台发送时隙控制信号，以及指定的从控中继台向主控中继台发送时隙控制信号，指定的从控中继台为用于发送和接收控制信道的控制数据的从控中继台。
该实施例中，主控中继台为控制信道的中继台。从控中继台为多台，多台中继台中包含控制信道的中继台和业务信道的中继台。若从控中继台中所有的从控中继台均未接收到时隙控制信号，如，所有的从控中继台在上电启动后一段时间内没有接收到时隙控制信号，则表明主控中继台发送时隙控制信号失败，此时可以由从控中继台中指定的从控中继台作为备选的主控设备，由指定的从控中继台向其他的中继台发送时隙控制信号。其中，指定的从控中继台为预先设置的用于发送和接收控制信道的控制数据的从控中继台。因此，可以在主控中继台发生故障无法实现对主控中继台和从控中继台的射频信号发射时间和/或射频信号接收时间进行控制时，由指定的从控中继台作为备选，执行主控中继台的时间主控功能，向主控中继台和其他从控中继台发送时隙控制信号，避免因主控中继台发生故障而无法控制主控中继台和从控中继台的射频信号发射时间和/或射频信号接收时间。
在一个实施例中，本申请还提供一种对讲中继系统，如图6所示，该对讲中继系统包括集成控制器和至少两台中继台。如图6所示，至少两台中继台包括中继台61、中继台62、中继台63……中继台6N。各中继台均为对讲集群基站中用于增大对讲机通讯距离的对讲机中继台。对讲中继系统中集成控制器以及各中继台的连接结构参见图6所示。如图6所示，各中继台分别与天线连接，通过天线实现上行射频信号的接收和下行射频信号的发射。
本实施例中，集成控制器用于向各中继台发送时隙控制信号；各中继台用于根据时隙控制信号调整各中继台的射频信号发射时间和/或射频信号接收时间，以避免在各中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
本实施例中，各中继台用于根据时隙控制信号调整各中继台的射频信号发射时间和/或射频信号接收时间，包括三种实现方式：
其一：各中继台用于根据时隙控制信号调整各中继台的射频信号发射时间，以避免在各中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
这一实现方式中，对讲中继系统通过调整各中继台的射频发射时间，即可避免在各中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。可以是，通过时隙控制信号控制各中继台的射频发射时间相同，即各中继台中任意一台或多台中继器需要发射射频信号时，均在同一时间进行射频信号发射。由于各中继台的射频发射时间相同，因此不会存在射频发射时间内任一中继台接收射频信号的情况，因此此种情况下，各中继台的射频接收时间可以相同也可以不相同。即，各中继台可以在同一时间进行射频信号接收，也可以在不同时间进行射频信号接收。
其二：各中继台用于根据时隙控制信号调整各中继台的射频信号接收时间，以避免在各中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
这一实现方式中，对讲中继系统通过调整各中继台的射频接收时间，即可避免在各中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。这种情况适用于各中继台中各中继台设定的上下行时隙相同。如，均采用DMR协议规定的上下行时隙。此种情况下，通过时隙控制信号控制各中继台的射频接收时间相同之后，各中继台的射频发射时间也相同，进而实现各中继台在同一时间进行射频信号发射，避免在各中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
其三：各中继台用于根据时隙控制信号调整各中继台的射频信号发射时间以及射频信号接收时间，以避免在各中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
这一实现方式中，各中继台同时调整了射频接收时间以及射频发射时间，使得各中继台的射频发射时间相同以及射频接收时间相同。此种情况下，能够控制对讲中继系统中各中继台的上行时隙的时间严格对齐以及下行时隙的时间也严格对齐，进而更加精准地确保对讲中继系统中下行时隙不会占据上行时隙的时间段，从而避免在各中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
此外，本实施例中，时隙控制信号可以是任意类型的信号。如，时隙控制信号可以是方波信号、正余弦信号或三角波信号等。各中继台基于时隙控制信号的信号特性设置对应的信号检测方式。当各中继台接收到时隙控制信号时，采用该信号检测方式识别出时隙控制信号的信号特性，根据时隙控制信号的信号特性调整各中继台的射频信号发射时间和/或射频信号接收时间。
例如，在具体工作中，时隙控制信号为方波信号时，时隙控制信号的其中一个信号特性 为：矩形波且只有“高”和“低”两个值的信号特性。此处的“高”和“低”指的是相对的两个值。各中继台中的信号检测方式为：检测出时隙控制信号中“高”值及其持续时长、以及“低”值及其持续时长。因此，可识别出时隙控制信号的矩形波的信号特性以及“高”和“低”两个值的信号特性。具体地，可采用脉冲检测的信号检测方式识别方波信号的信号特性。此时，各中继台根据时隙控制信号的信号特性调整射频信号发射时间和/或射频信号接收时间为：基于时隙控制信号的“高”值调整射频信号发射时间，和/或，基于时隙控制信号的“低”值调整射频信号接收时间。
例如，在具体工作中，时隙控制信号为正余弦信号时，时隙控制信号的其中一个信号特性为：存在反向且数值相等的两个最值。各中继台中的信号检测方式为：检测时隙控制信号的方向并记录各方向上信号达到最大值时的时间点。各中继台根据时隙控制信号的信号特性调整射频信号发射时间和/或射频信号接收时间为：基于时隙控制信号的一个方向上的最大值的时间点调整射频信号发射时间，和/或，基于时隙控制信号的另一个方向上的最大值的时间点调整的射频信号接收时间。
上述对讲中继系统，各中继台基于时隙控制信号调整各中继台的射频信号发射时间和/或射频信号接收时间。因此，对于各中继台，均基于同一信号调整射频信号发射时间和/或射频信号接收时间，避免在各中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号，如此，即便是各中继台收发频率相同，也可以通过时分复用的方式避免对讲中继系统中下行频率的发射对上行频率的接收的阻塞和干扰，而且本申请无需使用双工器，能够降低对讲中继系统的成本以及提高对讲中继系统的部署灵活性。
在一个实施例中，各中继台在初始化时或者被唤醒时，根据时隙控制信号调整射频信号发射时间和/或射频信号接收时间。
该实施例中，各中继台内部根据时隙控制信号调整射频信号发射时间和/或射频信号接收时间的具体操作与上述实施例中从控中继台内部根据时隙控制信号调整射频信号发射时间和/或射频信号接收时间的具体操作相同。各中继台在初始化时或者被唤醒时根据时隙控制信号调整射频信号发射时间和/或射频信号接收时间的说明，可参见上述从控中继台在初始化时或者被唤醒时根据时隙控制信号调整射频信号发射时间和/或射频信号接收时间的实施例的说明。
在一个实施例中，时隙控制信号为高低电平信号，高低电平信号包含高电平信号和低电平信号，各中继台用于根据高电平信号调整各中继台的射频信号发射时间和/或根据低电平信号调整射频信号接收时间；或，各中继台用于根据低电平信号调整各中继台的射频信号发射时间和/或根据高电平信号调整射频信号接收时间。
该实施例中，各中继台根据高电平信号调整各中继台的射频信号发射时间和/或根据低电平信号调整射频信号接收时间；或，各中继台用于根据低电平信号调整各中继台的射频信号发射时间和/或根据高电平信号调整射频信号接收时间，两种情况下的具体操作如上述实施例中，从控中继台根据高电平信号调整从控中继台的射频信号发射时间和/或根据低电平信号调整射频信号接收时间；或，从控中继台根据低电平信号调整从控中继台的射频信号发射时间和/或根据高电平信号调整射频信号接收时间的具体操作相同，具体可参加上述相应实施例中的说明。
在一个实施例中，至少两台中继台中包含用于转发来自对讲终端的业务信道的业务数据的第一中继台、以及用于发送和接收控制信道的控制数据的第二中继台；至少两台中继台中所有中继台均未接收到时隙控制信号时，第二中继台向第一中继台发送时隙控制信号；第一 中继台用于根据时隙控制信号调整第一中继台的射频信号发射时间和/或射频信号接收时间，且第二中继台还用于根据时隙控制信号调整第二中继台的射频信号发射时间和/或射频信号接收时间，以避免在第一中继台和第二中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
该实施例中，若至少两台中继台中所有中继台均未接收到时隙控制信号，如，所有的中继台在上电启动后一段时间内没有接收到时隙控制信号，则表明集成控制器发送时隙控制信号失败，此时可以由第二中继台作为备选的主控设备，由第二中继台向第一中继台发送时隙控制信号。因此，可以在集成控制器发生故障无法实现对各中继台的射频信号发射时间和/或射频信号接收时间进行控制时，由第二中继台作为备选，执行集成控制器的时间主控功能，向第一中继台发送时隙控制信号，避免因集成控制器发生故障而无法控制各中继台的射频信号发射时间和/或射频信号接收时间。
其中，当第二中继台作为备选的主控设备，由第二中继台向第一中继台发送时隙控制信号时，第一中继台和第二中继台的数据交互方式以及各中继台根据时隙控制信号调整射频信号发射时间和/或射频信号接收时间的具体操作均可参见上述图2对应的实施例的说明。也即是，当集成控制器无法向至少两台中继台发送时隙控制信号时，至少两台中继台中指定的中继台作为主控中继台，其他中继台作为从控中继台，分别执行根据时隙控制信号调整射频信号发射时间和/或射频信号接收时间的流程操作。此种情况下，也即进入如图2对应的实施例的流程，具体操作流程参见图2对应的实施例的说明。因此，可以避免集成控制器发生故障时，对讲中继系统中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号而造成的下行频率的发射对上行频率的接收的阻塞和干扰。
本申请还提供一种对讲中继系统的射频收发控制方法，对讲中继系统包括主控中继台和从控中继台，该方法应用于主控中继台。如图7所示，一种对讲中继系统的射频收发控制方法包括以下步骤：
S702，生成时隙控制信号。
S704，根据时隙控制信号调整主控中继台的射频信号发射时间和/或射频信号接收时间。
S706，向从控中继台发送时隙控制信号，以指示从控中继台根据时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
本实施例的一种对讲中继系统的射频收发控制方法，应用于上述对讲中继系统中的主控中继台，具体的操作流程可参见上述对讲中继系统的主控中继台的具体操作说明，此处不再详述。
本申请还提供一种对讲中继系统的射频收发控制方法，对讲中继系统包括主控中继台和从控中继台，该方法应用于从控中继台，如图8所示，一种对讲中继系统的射频收发控制方法包括以下步骤：
S802，接收来自主控中继台的时隙控制信号，主控中继台根据时隙控制信号调整主控中继台射频信号发射时间和/或射频信号接收时间。
S804，根据时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
本实施例的一种对讲中继系统的射频收发控制方法，应用于上述对讲中继系统中的从控 中继台，具体的操作流程可参见上述对讲中继系统的从控中继台的具体操作说明，此处不再详述。
应该理解的是，虽然流程图中的各个步骤按照箭头的指示依次显示，但是这些步骤并不是必然按照箭头指示的顺序依次执行。除非本文中有明确的说明，这些步骤的执行并没有严格的顺序限制，这些步骤可以以其它的顺序执行。而且，附图中的至少一部分步骤可以包括多个子步骤或者多个阶段，这些子步骤或者阶段并不必然是在同一时刻执行完成，而是可以在不同的时刻执行，这些子步骤或者阶段的执行顺序也不必然是依次进行，而是可以与其它步骤或者其它步骤的子步骤或者阶段的至少一部分轮流或者交替地执行。
本申请还提供一种种对讲中继系统的射频收发控制装置，对讲中继系统包括主控中继台和从控中继台，如图9所示，该装置应用于主控中继台，包括生成模块902、第一调整模块904以及发送模块906。生成模块902，用于生成时隙控制信号；第一调整模块904，用于根据时隙控制信号调整主控中继台的射频信号发射时间和/或射频信号接收时间；发送模块906，用于向从控中继台发送时隙控制信号，以指示从控中继台根据时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
关于对讲中继系统的射频收发控制装置的具体限定可以参见上文中对于对讲中继系统的射频收发控制方法的限定，在此不再赘述。上述对讲中继系统的射频收发控制装置中的各个模块可全部或部分通过软件、硬件及其组合来实现。上述各模块可以硬件形式内嵌于或独立于计算机设备中的处理器中，也可以以软件形式存储于计算机设备中的存储器中，以便于处理器调用执行以上各个模块对应的操作。
本申请还提供一种对讲中继系统的射频收发控制装置，对讲中继系统包括主控中继台和从控中继台，如图10所示，该装置应用于从控中继台，包括接收模块1002以及第二调整模块1004。接收模块1002，用于接收来自主控中继台的时隙控制信号，主控中继台根据时隙控制信号调整主控中继台射频信号发射时间和/或射频信号接收时间；第二调整模块1004，用于根据时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
关于对讲中继系统的射频收发控制装置的具体限定可以参见上文中对于对讲中继系统的射频收发控制方法的限定，在此不再赘述。上述对讲中继系统的射频收发控制装置中的各个模块可全部或部分通过软件、硬件及其组合来实现。上述各模块可以硬件形式内嵌于或独立于计算机设备中的处理器中，也可以以软件形式存储于计算机设备中的存储器中，以便于处理器调用执行以上各个模块对应的操作。
在一个实施例中，提供了一种计算机设备，该计算机设备可以上述主控中继台，其内部结构图可以如图11所示。该计算机设备包括通过系统总线连接的处理器、存储器、网络接口和数据库。其中，该计算机设备的处理器用于提供计算和控制能力。该计算机设备的存储器包括非易失性存储介质、内存储器。该非易失性存储介质存储有操作系统、计算机可读指令和数据库。该内存储器为非易失性存储介质中的操作系统和计算机可读指令的运行提供环境。该计算机设备的网络接口用于与外部的从控中继台连接，以与外部的从控中继台进行数据交互。该计算机可读指令被处理器执行时以实现一种对讲中继系统的射频收发控制方法。
在一个实施例中，提供了一种计算机设备，该计算机设备可以上述从控中继台，其内部结构图可以如图11所示。该计算机设备包括通过系统总线连接的处理器、存储器、网络接 口和数据库。其中，该计算机设备的处理器用于提供计算和控制能力。该计算机设备的存储器包括非易失性存储介质、内存储器。该非易失性存储介质存储有操作系统、计算机可读指令和数据库。该内存储器为非易失性存储介质中的操作系统和计算机可读指令的运行提供环境。该计算机设备的网络接口用于与外部的主控中继台连接，以与外部的主控中继台进行数据交互。该计算机可读指令被处理器执行时以实现一种对讲中继系统的射频收发控制方法。
本领域技术人员可以理解，图11中示出的结构，仅仅是与本申请方案相关的部分结构的框图，并不构成对本申请方案所应用于其上的计算机设备的限定，具体的计算机设备可以包括比图中所示更多或更少的部件，或者组合某些部件，或者具有不同的部件布置。
在一个实施例中，提供了一种计算机设备，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机可读指令，处理器执行计算机可读指令时实现以下步骤：生成时隙控制信号；根据时隙控制信号调整主控中继台的射频信号发射时间和/或射频信号接收时间；向从控中继台发送时隙控制信号，以指示从控中继台根据时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
在一个实施例中，提供了一种计算机设备，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机可读指令，处理器执行计算机可读指令时实现以下步骤：接收来自主控中继台的时隙控制信号，主控中继台根据时隙控制信号调整主控中继台射频信号发射时间和/或射频信号接收时间；根据时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
在一个实施例中，提供了一种计算机可读存储介质，其上存储有计算机可读指令，计算机可读指令被处理器执行时实现以下步骤：生成时隙控制信号；根据时隙控制信号调整主控中继台的射频信号发射时间和/或射频信号接收时间；向从控中继台发送时隙控制信号，以指示从控中继台根据时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
在一个实施例中，提供了一种计算机可读存储介质，其上存储有计算机可读指令，计算机可读指令被处理器执行时实现以下步骤：接收来自主控中继台的时隙控制信号，主控中继台根据时隙控制信号调整主控中继台射频信号发射时间和/或射频信号接收时间；根据时隙控制信号调整从控中继台的射频信号发射时间和/或射频信号接收时间，以避免在主控中继台和从控中继台中任一中继台接收射频信号的期间、除任一中继台之外的其他中继台发射射频信号。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机可读指令来指令相关的硬件来完成，所述的计算机可读指令可存储于一非易失性计算机可读取存储介质中，该计算机可读指令在执行时，可包括如上述各方法的实施例的流程。其中，本申请所提供的各实施例中所使用的对存储器、存储、数据库或其它介质的任何引用，均可包括非易失性和/或易失性存储器。非易失性存储器可包括只读存储器(ROM)、可编程ROM(PROM)、电可编程ROM(EPROM)、电可擦除可编程ROM(EEPROM)或闪存。易失性存储器可包括随机存取存储器(RAM)或者外部高速缓冲存储器。作为说明而非局限，RAM以多种形式可得，诸如静态RAM(SRAM)、动态RAM(DRAM)、同步DRAM(SDRAM)、双数据率SDRAM(DDRSDRAM)、增强型SDRAM(ESDRAM)、同步链路(Synchlink)DRAM(SLDRAM)、存 储器总线(Rambus)直接RAM(RDRAM)、直接存储器总线动态RAM(DRDRAM)、以及存储器总线动态RAM(RDRAM)等。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (22)

  1. 一种对讲中继系统，其特征在于，所述对讲中继系统包括主控中继台和从控中继台；
    所述主控中继台用于向所述从控中继台发送时隙控制信号；和
    所述从控中继台用于根据所述时隙控制信号调整所述从控中继台的射频信号发射时间和/或射频信号接收时间，且所述主控中继台还用于根据所述时隙控制信号调整所述主控中继台的射频信号发射时间和/或射频信号接收时间，以避免在所述主控中继台和所述从控中继台中任一中继台接收射频信号的期间、除所述任一中继台之外的其他中继台发射射频信号。
  2. 根据权利要求1所述的对讲中继系统，其特征在于，所述主控中继台和所述从控中继台均为时分双工的单频中继台。
  3. 根据权利要求1-2中任一项所述的对讲中继系统，其特征在于，所述从控中继台在初始化时或者被唤醒时，根据所述时隙控制信号调整射频信号发射时间和/或射频信号接收时间。
  4. 根据权利要求1-3中任一项所述的对讲中继系统，其特征在于，所述主控中继台还用于根据所述主控中继台的射频信号发送时间和/或射频信号接收时间生成所述时隙控制信号。
  5. 根据权利要求4所述的对讲中继系统，其特征在于，所述时隙控制信号为高低电平信号，所述高低电平信号包含高电平信号和低电平信号，所述从控中继台和所述主控中继台根据所述高电平信号调整射频信号发射时间，所述从控中继台和所述主控中继台根据所述低电平信号调整射频信号接收时间。
  6. 根据权利要求5所述的对讲中继系统，其特征在于，所述高电平信号的时长与所述从控中继台以及所述主控中继台中的发射时隙的时长相等，所述低电平信号的时长与所述从控中继台以及所述主控中继台中的接收时隙的时长相等。
  7. 根据权利要求4所述的对讲中继系统，其特征在于，所述时隙控制信号为高低电平信号，所述高低电平信号包含高电平信号和低电平信号，所述从控中继台和所述主控中继台根据所述低电平信号调整射频信号发射时间，所述从控中继台和所述主控中继台根据所述高电平信号调整射频信号接收时间。
  8. 根据权利要求7所述的对讲中继系统，其特征在于，所述低电平信号的时长与所述从控中继台以及所述主控中继台中的发射时隙的时长相等，所述高电平信号的时长与所述从控中继台以及所述主控中继台中的接收时隙的时长相等。
  9. 根据权利要求5或7所述的对讲中继系统，其特征在于，所述高低电平信号为连续多个周期的高低电平信号。
  10. 根据权利要求1-9中任一项所述的对讲中继系统，其特征在于，所述主控中继台用于发送和接收控制信道的控制数据，所述从控中继台用于转发来自对讲终端的业务信道的业务数据。
  11. 根据权利要求1-10中任一项所述的对讲中继系统，其特征在于，所述主控中继台还用于在接收到来自对讲终端的接入请求之后，根据所述从控中继台的状态向所述对讲终端发送接入响应，以通知所述对讲终端所述从控中继台相关的信息。
  12. 根据权利要求1-11中任一项所述的对讲中继系统，其特征在于，所述主控中继台为用于发送和接收控制信道的控制数据的中继台，所述从控中继台包括用于转发来自对讲终端的业务信道的业务数据的从控中继台、以及用于发送和接收控制信道的控制数 据的从控中继台；和
    所述从控中继台中所有的从控中继台均未接收到所述时隙控制信号时，所述从控中继台中指定的从控中继台向除所述指定的从控中继台之外的从控中继台发送所述时隙控制信号，以及所述指定的从控中继台向所述主控中继台发送所述时隙控制信号，所述指定的从控中继台为用于发送和接收控制信道的控制数据的从控中继台。
  13. 一种对讲中继系统，其特征在于，所述对讲中继系统包括集成控制器和至少两台中继台；
    所述集成控制器用于向各中继台发送时隙控制信号；和
    所述各中继台用于根据所述时隙控制信号调整所述各中继台的射频信号发射时间和/或射频信号接收时间，以避免在所述各中继台中任一中继台接收射频信号的期间、除所述任一中继台之外的其他中继台发射射频信号。
  14. 根据权利要求13所述的对讲中继系统，其特征在于，所述各中继台在初始化时或者被唤醒时，根据所述时隙控制信号调整射频信号发射时间和/或射频信号接收时间。
  15. 根据权利要求13-14中任一项所述的对讲中继系统，其特征在于，所述时隙控制信号为高低电平信号，所述高低电平信号包含高电平信号和低电平信号，所述各中继台用于根据所述高电平信号调整所述各中继台的射频信号发射时间和/或根据所述低电平信号调整射频信号接收时间；
    或，所述各中继台用于根据所述低电平信号调整所述各中继台的射频信号发射时间和/或根据所述高电平信号调整射频信号接收时间。
  16. 根据权利要求13-15中任一项所述的对讲中继系统，其特征在于，至少两台中继台中包含用于转发来自对讲终端的业务信道的业务数据的第一中继台、以及用于发送和接收控制信道的控制数据的第二中继台；
    所述至少两台中继台中所有中继台均未接收到所述时隙控制信号时，所述第二中继台向所述第一中继台发送所述时隙控制信号；和
    所述第一中继台用于根据所述时隙控制信号调整所述第一中继台的射频信号发射时间和/或射频信号接收时间，且所述第二中继台还用于根据所述时隙控制信号调整所述第二中继台的射频信号发射时间和/或射频信号接收时间，以避免在所述第一中继台和所述第二中继台中任一中继台接收射频信号的期间、除所述任一中继台之外的其他中继台发射射频信号。
  17. 一种对讲中继系统的射频收发控制方法，其特征在于，所述对讲中继系统包括主控中继台和从控中继台，所述方法应用于所述主控中继台，所述方法包括：
    生成时隙控制信号；
    根据所述时隙控制信号调整所述主控中继台的射频信号发射时间和/或射频信号接收时间；和
    向所述从控中继台发送所述时隙控制信号，以指示所述从控中继台根据所述时隙控制信号调整所述从控中继台的射频信号发射时间和/或射频信号接收时间，以避免在所述主控中继台和所述从控中继台中任一中继台接收射频信号的期间、除所述任一中继台之外的其他中继台发射射频信号。
  18. 一种对讲中继系统的射频收发控制方法，其特征在于，所述对讲中继系统包括主控中继台和从控中继台，所述方法应用于所述从控中继台，所述方法包括：
    接收来自所述主控中继台的时隙控制信号，所述主控中继台根据所述时隙控制信号调整所述主控中继台射频信号发射时间和/或射频信号接收时间；和
    根据所述时隙控制信号调整所述从控中继台的射频信号发射时间和/或射频信号接收时间，以避免在所述主控中继台和所述从控中继台中任一中继台接收射频信号的期间、除所述任一中继台之外的其他中继台发射射频信号。
  19. 一种对讲中继系统的射频收发控制装置，其特征在于，所述对讲中继系统包括主控中继台和从控中继台，所述装置应用于所述主控中继台，所述装置包括：
    生成模块，用于生成时隙控制信号；
    第一调整模块，用于根据所述时隙控制信号调整所述主控中继台的射频信号发射时间和/或射频信号接收时间；和
    发送模块，用于向所述从控中继台发送所述时隙控制信号，以指示所述从控中继台根据所述时隙控制信号调整所述从控中继台的射频信号发射时间和/或射频信号接收时间，以避免在所述主控中继台和所述从控中继台中任一中继台接收射频信号的期间、除所述任一中继台之外的其他中继台发射射频信号。
  20. 一种对讲中继系统的射频收发控制装置，其特征在于，所述对讲中继系统包括主控中继台和从控中继台，所述装置应用于所述从控中继台，所述装置包括：
    接收模块，用于接收来自所述主控中继台的时隙控制信号，所述主控中继台根据所述时隙控制信号调整所述主控中继台射频信号发射时间和/或射频信号接收时间；和
    第二调整模块，用于根据所述时隙控制信号调整所述从控中继台的射频信号发射时间和/或射频信号接收时间，以避免在所述主控中继台和所述从控中继台中任一中继台接收射频信号的期间、除所述任一中继台之外的其他中继台发射射频信号。
  21. 一种计算机设备，其特征在于，包括存储器及一个或多个处理器，所述存储器中储存有计算机可读指令，所述计算机可读指令被所述一个或多个处理器执行时，使得所述一个或多个处理器执行如权利要求17或18任意一项所述的方法的步骤。
  22. 一个或多个存储有计算机可读指令的非易失性计算机可读存储介质，其特征在于，所述计算机可读指令被一个或多个处理器执行时，使得所述一个或多个处理器执行如权利要求17或18任意一项所述的方法的步骤。
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