阅读说明：本技术 对讲中继系统及其射频收发控制方法、装置 (Talkback relay system and its radio frequency receiving and transmitting control method and device ) 是由 张威 于 2021-08-25 设计创作，主要内容包括：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。(The application relates to an intercom relay system, a radio frequency transceiving control method and device thereof, computer equipment and a storage medium, wherein the intercom relay system comprises a master control relay station and a slave control relay station; the master control relay station is used for sending a time slot control signal to the slave control relay station; the slave control relay station is used for adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station according to the time slot control signal, and the master control relay station is also used for adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the master control relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station of the master control relay station and the slave control relay station receives the radio frequency signals. According to the talkback relay system, the blocking effect of the transmission of the downlink frequency to the reception of the uplink frequency in the talkback relay system can be avoided without using a duplexer, so that the cost of the talkback relay system is reduced, and the deployment flexibility of the talkback relay system is improved.)

1. The talkback relay system is characterized by comprising a master control relay station and a slave control relay station;

the master control relay station is used for sending a time slot control signal to the slave control relay station;

the slave control relay station is used for adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station according to the time slot control signal, and the master control relay station is also used for adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the master control relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station of the master control relay station and the slave control relay station receives the radio frequency signals.

2. The intercom relay system as in claim 1, wherein said master relay station and said slave relay station are both time division duplexed single frequency relay stations.

3. The intercom relay system according to claim 1, wherein said slave relay station adjusts a radio frequency signal transmission time and/or a radio frequency signal reception time according to said slot control signal at initialization or at wake-up.

4. The intercom relay system according to claim 1, wherein said master relay station is further configured to generate said timeslot control signal according to a radio frequency signal transmission time and/or a radio frequency signal reception time of said master relay station.

5. The intercom relay system according to claim 4, wherein said timeslot control signal is a high-low level signal, said high-low level signal comprises a high level signal and a low level signal, said slave relay station and said master relay station adjust a transmission time of a radio frequency signal according to said high level signal, and said slave relay station and said master relay station adjust a reception time of a radio frequency signal according to said low level signal.

6. The intercom relay system according to claim 5, wherein said high level signal has a duration equal to a duration of a transmission time slot in said slave relay station and said master relay station, and said low level signal has a duration equal to a duration of a reception time slot in said slave relay station and said master relay station.

7. The intercom relay system according to claim 4, wherein said timeslot control signal is a high-low level signal, said high-low level signal comprises a high level signal and a low level signal, said slave relay station and said master relay station adjust a transmission time of a radio frequency signal according to said low level signal, and said slave relay station and said master relay station adjust a reception time of a radio frequency signal according to said high level signal.

8. The intercom relay system according to claim 7, wherein said low level signal has a duration equal to a duration of a transmission time slot in said slave relay station and said master relay station, and said high level signal has a duration equal to a duration of a reception time slot in said slave relay station and said master relay station.

9. The intercom relay system according to claim 5 or 7, wherein said high-low level signal is a high-low level signal of a plurality of consecutive periods.

10. The intercom relay system according to claim 1, wherein said master relay station is configured to transmit and receive control data of a control channel, and said slave relay station is configured to forward traffic data of a traffic channel from the intercom terminal.

11. The intercom relay system according to claim 1, wherein said master relay station is further configured to send an access response to said intercom terminal according to a status of said slave relay station after receiving an access request from an intercom terminal to notify said intercom terminal of information related to said slave relay station.

12. The intercom relay system according to claim 1, wherein said master relay station is a relay station for transmitting and receiving control data of a control channel, said slave relay station includes a slave relay station for forwarding traffic data of a traffic channel from the intercom terminal, and a slave relay station for transmitting and receiving control data of a control channel;

when all the slave relay stations in the slave relay stations do not receive the time slot control signal, the designated slave relay station in the slave relay stations transmits the time slot control signal to the slave relay stations except for the designated slave relay station, and the designated slave relay station transmits the time slot control signal to the master relay station, wherein the designated slave relay station is a slave relay station for transmitting and receiving control data of a control channel.

13. An intercom relay system, characterized in that the intercom relay system comprises an integrated controller and at least two relay stations;

the integrated controller is used for sending time slot control signals to each relay station;

and each relay station is used for adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of each relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station in each relay station receives the radio frequency signals.

14. The intercom relay system according to claim 13, wherein each relay station adjusts a radio frequency signal transmission time and/or a radio frequency signal reception time according to the timeslot control signal at initialization or at wake-up.

15. The intercom relay system according to claim 13, wherein said timeslot control signal is a high-low level signal, said high-low level signal comprises a high level signal and a low level signal, said each relay station is configured to adjust a transmission time of a radio frequency signal of said each relay station according to said high level signal and/or adjust a reception time of a radio frequency signal according to said low level signal;

or, each relay station is configured to adjust the radio frequency signal transmission time of each relay station according to the low level signal and/or adjust the radio frequency signal reception time according to the high level signal.

16. The intercom relay system according to claim 13, wherein the at least two relay stations include a first relay station for forwarding the traffic data of the traffic channel from the intercom terminal, and a second relay station for transmitting and receiving the control data of the control channel;

when all relay stations in the at least two relay stations do not receive the time slot control signal, the second relay station sends the time slot control signal to the first relay station;

the first relay station is configured to adjust a radio frequency signal transmission time and/or a radio frequency signal reception time of the first relay station according to the timeslot control signal, and the second relay station is further configured to adjust a radio frequency signal transmission time and/or a radio frequency signal reception time of the second relay station according to the timeslot control signal, so as to avoid that, during a period in which any one of the first relay station and the second relay station receives a radio frequency signal, other relay stations except for the any relay station transmit a radio frequency signal.

17. A radio frequency transceiving control method of an intercom relay system is characterized in that the intercom relay system comprises a master control relay station and a slave control relay station, and the method is applied to the master control relay station and comprises the following steps:

generating a time slot control signal;

adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the main control relay station according to the time slot control signal;

and sending the time slot control signal to the slave control relay station to instruct the slave control relay station to adjust the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station of the master control relay station and the slave control relay station receives the radio frequency signals.

18. A radio frequency transceiving control method of an intercom relay system, wherein the intercom relay system comprises a master control relay station and a slave control relay station, and the method is applied to the slave control relay station, and the method comprises the following steps:

receiving a time slot control signal from the master control relay station, wherein the master control relay station adjusts the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the master control relay station according to the time slot control signal;

and adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station in the master control relay station and the slave control relay station receives the radio frequency signals.

19. A radio frequency transceiving control device of an intercom relay system, the intercom relay system comprising a master control relay station and a slave control relay station, the device being applied to the master control relay station, the device comprising:

the generating module is used for generating a time slot control signal;

the first adjusting module is used for adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the main control relay station according to the time slot control signal;

a sending module, configured to send the timeslot control signal to the slave control relay station to instruct the slave control relay station to adjust a radio frequency signal transmission time and/or a radio frequency signal reception time of the slave control relay station according to the timeslot control signal, so as to avoid that, during a period in which any one of the master control relay station and the slave control relay station receives a radio frequency signal, other relay stations except for the any relay station transmit a radio frequency signal.

20. A radio frequency transceiving control device of an intercom relay system, wherein the intercom relay system comprises a master relay station and a slave relay station, the device is applied to the slave relay station, and the device comprises:

the receiving module is used for receiving a time slot control signal from the master control relay station, and the master control relay station adjusts the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the master control relay station according to the time slot control signal;

and a second adjusting module, configured to adjust the radio frequency signal transmission time and/or the radio frequency signal reception time of the slave control relay station according to the timeslot control signal, so as to avoid that, during a period in which any relay station of the master control relay station and the slave control relay station receives a radio frequency signal, other relay stations except for the any relay station transmit a radio frequency signal.

21. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method of any of claims 17 or 18 are implemented by the processor when executing the computer program.

22. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of one of claims 17 or 18.

Technical Field

The present invention relates to the field of intercom technologies, and in particular, to an intercom relay system, a radio frequency transceiving control method and apparatus thereof, a computer device, and a storage medium.

Background

The existing talk-back relay system includes a plurality of relay stations. The relay station in the talkback relay system, whether in analog or digital mode, generally adopts a mode of transceiving different frequencies, that is, the uplink frequency is used for receiving, the downlink frequency is used for transmitting, and the uplink frequency and the downlink frequency are separated by a sufficient interval. To prevent the blocking effect of the transmission of the downlink frequency on the reception of the uplink frequency, a duplexer is usually added to the talk-around relay system, as shown in fig. 1. The duplexer is essentially two band-pass filters, the passbands of the two band-pass filters are not overlapped, and the uplink frequency and the downlink frequency are respectively positioned in one passband. The duplexer is used for isolating the transmitting and receiving frequency and reducing the blocking effect of radio frequency. If a duplexer is not added, the downlink transmitting signal of the talkback relay system will cause great blocking and interference to the uplink receiving signal of the talkback relay system.

However, when the talkback relay system is deployed, because the uplink and downlink frequencies of the relay station of different talkback relay systems are different, the corresponding duplexer needs to be customized according to the different frequencies of the different talkback relay systems, which results in a higher cost of the talkback relay system on one hand and inconvenience in deployment of the talkback relay system on the other hand.

Disclosure of Invention

Therefore, in order to solve the above technical problems, there is a need to provide an intercom relay system, a radio frequency transceiving control method and apparatus thereof, a computer device, and a storage medium, which can avoid the blocking effect of the transmission of the downlink frequency to the reception of the uplink frequency in the intercom relay system without using a duplexer, thereby reducing the cost of the intercom relay system and improving the deployment flexibility of the intercom relay system.

The talkback relay system comprises a master control relay station and a slave control relay station; the master control relay station is used for sending a time slot control signal to the slave control relay station; the slave control relay station is used for adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station according to the time slot control signal, and the master control relay station is also used for adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the master control relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station of the master control relay station and the slave control relay station receives the radio frequency signals.

In one embodiment, the master relay station and the slave relay station are both single frequency relay stations of time division duplex.

In one embodiment, the slave control relay station adjusts the transmission time and/or the reception time of the radio frequency signal according to the time slot control signal when the slave control relay station is initialized or awakened.

In one embodiment, the master relay station is further configured to generate the timeslot control signal according to a radio frequency signal transmission time and/or a radio frequency signal reception time of the master relay station.

In one embodiment, the timeslot 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 transmission time of the radio frequency signal according to the high-level signal, and the slave control relay station and the master control relay station adjust the reception time of the radio frequency signal according to the low-level signal.

In one embodiment, the duration of the high-level signal is equal to the duration of the transmission time slots in the slave relay station and the master relay station, and the duration of the low-level signal is equal to the duration of the reception time slots in the slave relay station and the master relay station.

In one embodiment, the timeslot 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 transmission time of the radio frequency signal according to the low-level signal, and the slave control relay station and the master control relay station adjust the reception time of the radio frequency signal according to the high-level signal.

In one embodiment, the duration of the low-level signal is equal to the duration of the transmission time slots in the slave relay station and the master relay station, and the duration of the high-level signal is equal to the duration of the reception time slots in the slave relay station and the master relay station.

In one embodiment, the high-low level signal is a high-low level signal of a plurality of continuous periods.

In one embodiment, the master relay station is used for sending and receiving control data of a control channel, and the slave relay station is used for forwarding service data of a service channel from the talkback terminal.

In one embodiment, the master relay station is further configured to send an access response to the intercom terminal according to the state of the slave relay station after receiving the access request from the intercom terminal, so as to inform the intercom terminal of the information related to the slave relay station.

In one embodiment, the master relay station is a relay station for transmitting and receiving control data of a control channel, and the slave relay station comprises a slave relay station for forwarding service data of a service channel from the talkback terminal and a slave relay station for transmitting and receiving control data of the control channel; when all the slave relay stations in the slave relay stations do not receive the time slot control signal, the designated slave relay station in the slave relay stations transmits the time slot control signal to the slave relay stations except the designated slave relay station, and the designated slave relay station transmits the time slot control signal to the master relay station, wherein the designated slave relay station is the slave relay station for transmitting and receiving the control data of the control channel.

An intercom relay system comprises an integrated controller and at least two relay stations; the integrated controller is used for sending time slot control signals to each relay station; each relay station is used for adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of each relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station in each relay station receives the radio frequency signals.

In one embodiment, each relay station adjusts the transmission time and/or the reception time of the radio frequency signal according to the timeslot control signal when the relay station is initialized or awakened.

In one embodiment, the timeslot control signal is a high-low level signal, the high-low level signal includes a high-level signal and a low-level signal, and each relay station is configured to adjust a radio frequency signal transmission time of each relay station according to the high-level signal and/or adjust a radio frequency signal reception time according to the low-level signal; or, each relay station is used for adjusting the radio frequency signal transmitting time of each relay station according to the low level signal and/or adjusting the radio frequency signal receiving time according to the high level signal.

In one embodiment, the at least two relay stations comprise a first relay station for forwarding the service data of the service channel from the talkback terminal and a second relay station for sending and receiving the control data of the control channel; when all relay stations in at least two relay stations do not receive the time slot control signal, the second relay station sends the time slot control signal to the first relay station; the first relay station is used for adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the first relay station according to the time slot control signal, and the second relay station is also used for adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the second relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station of the first relay station and the second relay station receives the radio frequency signals.

A radio frequency receiving and dispatching control method of an talkback relay system, the talkback relay system comprises a master control relay station and a slave control relay station, the method is applied to the master control relay station, and the method comprises the following steps: generating a time slot control signal; adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the main control relay station according to the time slot control signal; and sending a time slot control signal to the slave control relay station to instruct the slave control relay station to adjust the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that the master control relay station and any slave control relay station receive the radio frequency signals.

A radio frequency transceiving control method of an intercom relay system, the intercom relay system comprises a master control relay station and a slave control relay station, the method is applied to the slave control relay station, and the method comprises the following steps: receiving a time slot control signal from a master control relay station, and adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the master control relay station by the master control relay station according to the time slot control signal; and adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station in the master control relay station and the slave control relay station receives the radio frequency signals.

A radio frequency receiving and dispatching control device of an talkback relay system, the talkback relay system comprises a master control relay station and a slave control relay station, the device is applied to the master control relay station, and the device comprises: the generating module is used for generating a time slot control signal; the first adjusting module is used for adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the main control relay station according to the time slot control signal; and the sending module is used for sending a time slot control signal to the slave control relay station so as to instruct the slave control relay station to adjust the radio frequency signal sending time and/or the radio frequency signal receiving time of the slave control relay station according to the time slot control signal, so that the other relay stations except any relay station can avoid sending the radio frequency signal during the period that any relay station of the master control relay station and the slave control relay station receives the radio frequency signal.

A radio frequency transmit-receive control device of an talkback relay system, the talkback relay system comprises a master control relay station and a slave control relay station, the device is applied to the slave control relay station, the device comprises: the receiving module is used for receiving a time slot control signal from the master control relay station, and the master control relay station adjusts the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the master control relay station according to the time slot control signal; and the second adjusting module is used for adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station in the master control relay station and the slave control relay station receives the radio frequency signals.

According to the talkback relay system and the radio frequency transceiving control method, device, computer equipment and storage medium thereof, the master control relay station sends the time slot control signal to the slave control relay station, the slave control relay station adjusts the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station based on the time slot control signal, and meanwhile, the master control relay station adjusts the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the master control relay station based on the time slot control signal. Therefore, for the master control relay station and the slave control relay station, the radio frequency signal transmitting time and/or the radio frequency signal receiving time are adjusted based on the same signal, and the radio frequency signals are prevented from being transmitted by other relay stations except any relay station in the period of receiving the radio frequency signals by any relay station in the master control relay station and the slave control relay station, so that even if the transmitting and receiving frequencies of all the relay stations are the same, the blocking and the interference of the transmission of the downlink frequency in the talkback relay system on the reception of the uplink frequency can be avoided in a time division multiplexing mode, and in addition, a duplexer is not required to be used in the method, the cost of the talkback relay system can be reduced, and the deployment flexibility of the talkback relay system can be improved.

In addition, the above-mentioned intercom relay system sends the timeslot control signal to each relay station through the integrated controller, and each relay station is used for adjusting the radio frequency signal transmission time and/or the radio frequency signal reception time of each relay station according to the timeslot control signal, so as to avoid that any relay station of each relay station transmits the radio frequency signal during the period that any relay station receives the radio frequency signal, and other relay stations except any relay station transmit the radio frequency signal. Therefore, even if the transmitting and receiving frequencies of the relay stations are the same, the blocking and interference of the transmission of the downlink frequency to the reception of the uplink frequency in the talkback relay system can be avoided in a time division multiplexing mode, and the cost of the talkback relay system can be reduced and the deployment flexibility of the talkback relay system can be improved without using a duplexer.

Drawings

Fig. 1 is a schematic diagram illustrating a structural connection of a conventional intercom relay system in one embodiment;

FIG. 2 is a schematic diagram of an exemplary embodiment of an intercom relay system of the present application;

fig. 3 is a schematic diagram illustrating alignment of transmission and reception time slots of an intercom relay system according to an embodiment of the present application;

fig. 4 is a schematic flowchart illustrating internal information processing of a master relay station and a slave relay station of an intercom relay system according to an embodiment of the present application;

fig. 5 is a schematic diagram illustrating timeslot alignment between a slave relay station and a master relay station by high and low level signals according to an embodiment;

fig. 6 is a schematic structural connection diagram of an intercom relay system of the present application in another embodiment;

fig. 7 is a schematic flowchart illustrating an rf transceiving control method of an intercom relay system according to an embodiment of the present application;

fig. 8 is a schematic flowchart illustrating an rf transceiving control method of an intercom relay system according to another embodiment of the present application;

fig. 9 is a block diagram illustrating an exemplary embodiment of an rf transceiver control device of an intercom relay system of the present application;

fig. 10 is a block diagram illustrating an rf transceiving control apparatus of an intercom relay system according to another embodiment of the present application;

FIG. 11 is a diagram illustrating an internal structure of a computer device in one embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The application provides an intercom relay system. In one embodiment, an intercom relay system includes a master relay station and a slave relay station. The slave control relay station may be one or at least two. As shown in fig. 2, when there are a plurality of slave relay stations, the plurality of slave relay stations include the slave relay station 21 and the slave relay station 22 … … as the slave relay station 2N. The master control relay station and the slave control relay stations are all interphone relay stations used for increasing the communication distance of the interphones in the talkback cluster base station. A connection structure of the master relay station and the slave relay station in the intercom relay system is shown in fig. 2. As shown in fig. 2, the master relay station and the slave relay station are respectively connected to an antenna, and receive an uplink radio frequency signal and transmit a downlink radio frequency signal are implemented by the antenna. When the transmission and the reception of the radio frequency signals are realized, the relationship between the master control relay station and the slave control relay station does not exist.

In this embodiment, the master control relay station sends a timeslot control signal to the slave control relay station, the slave control relay station adjusts the radio frequency signal transmission time and/or the radio frequency signal reception time of the slave control relay station according to the timeslot control signal, and 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 timeslot control signal, so as to avoid that, during a period in which any relay station of the master control relay station and the slave control relay station receives a radio frequency signal, other relay stations except for any relay station transmit a radio frequency signal. In this case, the master relay station and the slave relay station are in a master-slave relationship. The master control and the slave control herein refer to that the relay station as the master control controls the transmission time and/or the reception time of the radio frequency signal inside the relay station as the slave control by sending the time slot control signal.

In this embodiment, the master control relay station and the slave control relay station both adjust the radio frequency signal transmission time and/or the radio frequency signal reception time according to the time slot control signal, and the method includes three implementation manners:

one is as follows: the slave control relay station is used for adjusting the radio frequency signal transmitting time of the slave control relay station according to the time slot control signal, and the master control relay station is also used for adjusting the radio frequency signal transmitting time of the master control relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station of the master control relay station and the slave control relay station receives the radio frequency signals.

In this implementation, the talkback relay system can avoid the transmission of the radio frequency signal by the relay stations other than any relay station during the period when any relay station of the master control relay station and the slave control relay station receives the radio frequency signal by adjusting the radio frequency transmission time of the slave control relay station and the master control relay station. The radio frequency transmission time of the master control relay station and the radio frequency transmission time of the slave control relay station are controlled to be the same through the time slot control signal, namely when any one or more of the master control relay station and the slave control relay station needs to transmit radio frequency signals, the radio frequency signals are transmitted at the same time. Because the radio frequency transmitting time of the master control relay station is the same as that of the slave control relay station, the situation that any relay station receives radio frequency signals in the radio frequency transmitting time does not exist, and therefore in the situation, the radio frequency receiving time of the master control relay station and the radio frequency receiving time of the slave control relay station can be the same or different. That is, the master relay station and the slave relay station may receive the radio frequency signal at the same time or may receive the radio frequency signal at different times.

The second step is as follows: the slave control relay station is used for adjusting the radio frequency signal receiving time of the slave control relay station according to the time slot control signal, and the master control relay station is also used for adjusting the radio frequency signal receiving time of the master control relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station of the master control relay station and the slave control relay station receives the radio frequency signals.

In this implementation, the talkback relay system can avoid the transmission of the radio frequency signal by the relay stations other than any relay station during the period when any relay station of the master control relay station and the slave control relay station receives the radio frequency signal by adjusting the radio frequency receiving time of the slave control relay station and the master control relay station. This applies to the case where the uplink and downlink timeslots set by each relay station are the same between the master relay station and the slave relay station. For example, the uplink and downlink time slots specified by the DMR protocol are all used. In this case, after the time slot control signal controls the radio frequency receiving time of the master relay station and the slave relay station to be the same, the radio frequency transmitting time of the master relay station and the slave relay station is also the same, so that the master relay station and the slave relay station transmit the radio frequency signal at the same time, and the transmission of the radio frequency signal by other relay stations except any relay station is avoided during the period when any relay station of the master relay station and the slave relay station receives the radio frequency signal.

And thirdly: the slave control relay station is used for adjusting the radio frequency signal transmitting time and the radio frequency signal receiving time of the slave control relay station according to the time slot control signal, and the master control relay station is also used for adjusting the radio frequency signal transmitting time and the radio frequency signal receiving time of the master control relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station of the master control relay station and the slave control relay station receives the radio frequency signals.

In this implementation, the slave control relay station and the master control relay station simultaneously adjust the radio frequency receiving time and the radio frequency transmitting time, so that the radio frequency transmitting time and the radio frequency receiving time of the slave control relay station and the master control relay station are the same. In this case, the time of the uplink time slot of the slave relay station and the master relay station in the intercom relay system can be controlled to be strictly aligned, and the time of the downlink time slot can be also strictly aligned, so that the time period of the uplink time slot in the intercom relay system can be ensured to be not occupied by the downlink time slot, and the radio frequency signals are prevented from being transmitted by other relay stations except any relay station during the period when the master relay station and any relay station in the slave relay stations receive the radio frequency signals.

In addition, in the present embodiment, the slot control signal may be any type of signal. For example, the slot control signal may be a square wave signal, a sine-cosine signal, a triangular wave signal, or the like. And the master control relay station and the slave control relay station set corresponding signal detection modes based on the signal characteristics of the time slot control signals. When the slave control relay station receives the time slot control signal, the signal detection mode is adopted to identify the signal characteristic of the time slot control signal, and the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station are/is adjusted according to the signal characteristic of the time slot control signal. Similarly, the main control relay station adopts the signal detection mode to identify the signal characteristics of the time slot control signal, and adjusts the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the main control relay station according to the signal characteristics of the time slot control signal.

For example, in a specific operation, when the timeslot control signal is a square wave signal, one of the signal characteristics of the timeslot control signal is: rectangular waves and only two values, "high" and "low". "high" and "low" herein refer to two values in opposition. The signal detection mode in the master control relay station and the slave control relay station is as follows: a high value and its duration, and a low value and its duration in the slot control signal are detected. Accordingly, the signal characteristics of the rectangular wave of the slot control signal and the signal characteristics of the two values "high" and "low" can be identified. Specifically, the signal characteristics of the square wave signal can be identified by a signal detection method of pulse detection. At this time, the master control relay station and the slave control relay station adjust the radio frequency signal transmitting time and/or the radio frequency signal receiving time according to the signal characteristics of the time slot control signal as follows: the radio frequency signal transmission time is adjusted based on a "high" value of the timeslot control signal and/or the radio frequency signal reception time is adjusted based on a "low" value of the timeslot control signal.

For example, in a specific operation, when the timeslot control signal is a sine and cosine signal, one of the signal characteristics of the timeslot control signal is: there are two maxima that are inverted and equal in value. The signal detection mode in the master control relay station and the slave control relay station is as follows: the direction of the time slot control signal is detected and the time points when the signal reaches a maximum value in each direction are recorded. The master control relay station and the slave control relay station adjust the radio frequency signal transmitting time and/or the radio frequency signal receiving time according to the signal characteristics of the time slot control signals as follows: the radio frequency signal transmission time is adjusted based on a time point of a maximum value in one direction of the slot control signal, and/or the radio frequency signal reception time is adjusted based on a time point of a maximum value in another direction of the slot control signal.

In the talkback relay system, the master control relay station sends the time slot control signal to the slave control relay station, the slave control relay station adjusts the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station based on the time slot control signal, and meanwhile, the master control relay station adjusts the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the master control relay station based on the time slot control signal. Therefore, for the master control relay station and the slave control relay station, the radio frequency signal transmitting time and/or the radio frequency signal receiving time are adjusted based on the same signal, and the radio frequency signals are prevented from being transmitted by other relay stations except any relay station in the period of receiving the radio frequency signals by any relay station in the master control relay station and the slave control relay station, so that even if the transmitting and receiving frequencies of all the relay stations are the same, the blocking and the interference of the transmission of the downlink frequency in the talkback relay system on the reception of the uplink frequency can be avoided in a time division multiplexing mode, and in addition, a duplexer is not required to be used in the method, the cost of the talkback relay system can be reduced, and the deployment flexibility of the talkback relay system can be improved.

In one embodiment, the master relay station and the slave relay station are both single frequency relay stations of time division duplex.

In this embodiment, the master control relay station and the slave control relay station are both single frequency relay stations, that is, the transceiving frequencies of any relay station of the master control relay station and the slave control relay station are the same, so that the transceiving frequencies are not required to be isolated by a duplexer. In addition, the master relay station and the slave relay station are both time division duplex relay stations, and may specifically be time division duplex relay stations based on a DMR protocol. At this time, as shown in fig. 3, the slave control relay station adjusts the radio frequency signal transmission time and/or the radio frequency signal reception time of the slave control relay station according to the timeslot control signal, and 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 timeslot control signal, so that the uplink timeslots and the downlink timeslots of each relay station in the slave control relay station and the master control relay station are aligned, and it is ensured that the downlink timeslots do not occupy the time period of the uplink timeslots, thereby avoiding that the other relay stations except any relay station transmit radio frequency signals during the period when any relay station in the master control relay station and the slave control relay station receives radio frequency signals.

In one embodiment, the slave control relay station adjusts the transmission time of the radio frequency signal and/or the reception time of the radio frequency signal according to the time slot control signal when the slave control relay station is initialized or awakened.

In this embodiment, if the slave relay station receives the timeslot control signal before initialization or before being awakened, the radio frequency signal transmission time and/or the radio frequency signal reception time are/is adjusted according to the timeslot control signal at the time of initialization or at the time of being awakened. Otherwise, after the initialization or after the wakeup, the receiving of the time slot control signal is waited, and the radio frequency signal transmitting time and/or the radio frequency signal receiving time are adjusted according to the time slot control signal.

In addition, the master control relay station generates a time slot control signal before the radio frequency signal is transmitted, transmits the time slot control signal to the slave control relay station, and adjusts the radio frequency signal transmission time and/or the radio frequency signal receiving time according to the time slot control signal. Therefore, the talkback relay system can be ensured to complete the adjustment of the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the master control relay station and the slave control relay station before the talkback relay system performs data interaction with the talkback terminal, and the blockage and the interference of the uplink receiving signal of the talkback relay system caused by the downlink transmitting signal when the talkback relay system performs data interaction with the talkback terminal are avoided.

For example, as shown in fig. 4, the master relay station outputs a slot control signal to the slave relay station before transmitting a broadcast signal. The master relay station may output a slot control signal to the slave relay station before power-on start, initialization, or wake-up. Meanwhile, the master relay station synchronizes the receiving/transmitting time slot time (not shown in fig. 4) inside the master relay station based on the time slot control signal. And judging whether the time slot control signal is received or not before the slave control relay station is powered on, started, initialized or awakened. If yes, the receiving/sending time slot time inside the slave control relay station is synchronized according to the time slot control signal. If not, the slave control relay station is in a waiting state until receiving the time slot control signal.

And after the master control relay station and the slave control relay station synchronize internal receiving/sending time slot time based on the time slot control signal, the master control relay station and the slave control relay station enter a data forwarding operation process of the talkback terminal. Specifically, as shown in fig. 4, the main control relay station sends a broadcast signal according to the downlink timeslot determined by the timeslot control signal, and determines whether there is an uplink call request from the intercom terminal in the uplink timeslot determined by the timeslot control signal. And if the uplink call request is received, sending a downlink response in the downlink time slot determined according to the time slot control signal. Information about a specific relay station is included in the downlink response so that the intercom terminal can transmit traffic data of the traffic channel to the specific relay station. If no idle relay station is available, the situation is notified to the talkback terminal in the downlink response, so that the talkback terminal can try the uplink call request again later.

Preferably, the slave control relay station adjusts the reception time and the transmission time according to the slot control signal, thereby maintaining synchronization with the master control relay station and other slave control relay stations. And if the uplink service data is received in the uplink time slot determined according to the time slot control signal, forwarding the received uplink service data in the subsequent downlink time slot.

Therefore, before the master control relay station and the slave control relay station execute specific talkback service operation, the receiving/transmitting time slot time of each relay station can be synchronized, so that the problem that when the specific talkback service operation is executed, other relay stations transmit radio frequency signals during the period that any relay station receives the radio frequency signals, and the blockage and the interference of the transmission of downlink frequency in the talkback relay system on the reception of uplink frequency are caused is avoided.

In one embodiment, the master relay station is further configured to generate the timeslot control signal according to a radio frequency signal transmission time and/or a radio frequency signal reception time of the master relay station.

In this embodiment, the master relay station generates the timeslot control signal according to the radio frequency signal transmission time of the master relay station. Or the main control relay station generates the time slot control signal according to the radio frequency signal receiving time of the main control relay station. Or the main control 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 main control relay station. According to the embodiment, the main control relay station generates the time slot control signal based on the radio frequency signal sending time and/or the radio frequency signal receiving time inside the main control relay station, additional equipment does not need to be added to assist in generating the time slot control signal, the operation is simple, the feasibility is high, and the application scene is wider.

In one embodiment, the timeslot 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 transmission time of the radio frequency signal according to the high-level signal, and the slave control relay station and the master control relay station adjust the reception time of the radio frequency signal according to the low-level signal.

In this embodiment, the duration of the high-level signal is equal to the duration of the transmission time slots in the slave control relay station and the master control relay station, and the duration of the low-level signal is equal to the duration of the reception time slots in the slave control relay station and the master control relay station.

In one embodiment, the timeslot 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 transmission time of the radio frequency signal according to the low-level signal, and the slave control relay station and the master control relay station adjust the reception time of the radio frequency signal according to the high-level signal.

In this embodiment, the duration of the low-level signal is equal to the duration of the transmission time slots in the slave control relay station and the master control relay station, and the duration of the high-level signal is equal to the duration of the reception time slots in the slave control relay station and the master control relay station.

In the above two embodiments, the timeslot control signal is a high-low level signal, and the high-low level signal includes a high level signal and a low level signal. The radio frequency signal receiving time can be adjusted based on the high level signal, and the radio frequency signal transmitting time can be adjusted based on the low level signal. Or, the radio frequency signal transmitting time is adjusted based on the high level signal, and the radio frequency signal receiving time is adjusted based on the low level signal.

When the slave control relay station and the master control relay station adjust the transmission time of the radio frequency signal according to the high level signal and the slave control relay station and the master control relay station adjust the receiving time of the radio frequency signal according to the low level signal, the time length of the high level signal is equal to the time length of the transmission time slot in the slave control relay station and the master control relay station, and the time length of the low level signal is equal to the time length of the receiving time slot in the slave control relay station and the master control relay station. For example, an example of time slot alignment between the slave relay station and the master relay station by the high-low level signal is given below, and is shown in fig. 5:

the master control relay station sends out high and low level signals. The low level signal represents that the master relay station is in a receiving state, and the slave relay station is also in the receiving state. As shown in fig. 5, the time period of the reception state is T0. When the high-low level signal changes from the low level signal to the high level signal, as shown in fig. 5, the high-low level signal enters the power ramp time T1 of the transmission power amplifier, and the slave control relay station receives the high level signal or the low-to-high jump signal. At this time, if the slave control relay station has the service requirement of forwarding the call, the radio frequency signal transmission preparation phase is also immediately entered. If there is no traffic demand for the transit service, it is in a waiting state. As shown in fig. 5, after the power of the transmission power amplifier is stabilized, the master control relay station and the slave control relay station enter a transmission state, and the time period of the transmission state is T2. At this time, the time length of the reception slot in the slave relay station and the master relay station is T0, and the time length of the transmission slot in the slave relay station and the master relay station is T2.

When the slave control relay station and the master control relay station adjust the transmission time of the radio frequency signal according to the low level signal and the slave control relay station and the master control relay station adjust the receiving time of the radio frequency signal according to the high level signal, the duration of the low level signal is equal to the duration of the transmission time slot in the slave control relay station and the master control relay station, and 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. Taking the above example of time slot alignment as an illustration, the low level signal in the above example represents that the relay station is in the transmitting state, and the high level signal represents that the relay station is in the receiving state. At this time, the time length of the reception slot in the slave relay station and the master relay station is T2, and the time length of the transmission slot in the slave relay station and the master relay station is T0.

Therefore, the duration of the high-level signal in the high-level and low-level signals is controlled to be equal to the duration of the time slot of the relay station corresponding to the high-level and low-level signals, and the duration of the low-level signal is controlled to be equal to the duration of the time slot of the relay station corresponding to the low-level signal, so that the accuracy of the alignment of the uplink time slot and the downlink time slot of each relay station in the master control relay station and the slave control relay station is improved, and the radio frequency signals transmitted by other relay stations except any relay station in the period of receiving the radio frequency signals by any relay station in the master control relay station and the slave control relay station are further accurately avoided.

In one embodiment, the high-low level signal is a high-low level signal of a plurality of continuous periods.

In this embodiment, the slave control relay station and the master control relay station are both single frequency relay stations of time division duplex, and the transmission time slots and the reception time slots in the slave control relay station and the master control relay station are periodically alternated. When the high-low level signal is used as the time slot control signal to adjust the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station and the master control relay station, the high-low level signal is a high-low level signal of a plurality of continuous periods. Of the high-low level signals of consecutive periods, the high-low level signal of a single period is as shown in fig. 5. Therefore, each of the periodically alternating transmission time slots and reception time slots in the slave relay station and the master relay station can be accurately adjusted by continuously transmitting the high-low level signals for a plurality of periods.

In other embodiments, the slave relay station and the master relay station are both single frequency relay stations of time division duplex, and the transmission time slots and the reception time slots in the slave relay station and the master relay station are periodically alternated. The high-low level signal may be a single period of high-low level signal. Because the transmitting time slot and the receiving time slot of the slave control relay station and the master control relay station are periodic, the transmitting time slot and the receiving time slot of one period of the slave control relay station and the master control relay station are adjusted through the high-low level signal of a single period, and other transmitting time slots and receiving time slots are also adjusted accordingly, so that the effect of adjusting each transmitting time slot and each receiving time slot of the slave control relay station and the master control relay station can be achieved.

And the high-low level signals of a plurality of continuous periods are used for adjusting each transmitting time slot and each receiving time slot of the slave control relay station and the master control relay station, so that the alignment of each transmitting time slot and each receiving time slot is ensured, and the accuracy of the alignment of the uplink time slot and the downlink time slot of the slave control relay station and the master control relay station in the talkback relay system is improved. The high-low level signals of a single period are used for adjusting the transmitting time slots and the receiving time slots of the slave control relay station and the master control relay station, the master control relay station is not required to continuously output the high-low level signals, and the resource loss of the master control relay station can be saved.

In one embodiment, the master relay station is used for sending and receiving control data of a control channel, and the slave relay station is used for forwarding service data of a service channel from the talkback terminal.

In this embodiment, the master relay station is a relay station corresponding to the control channel, and the slave relay station is a relay station of the traffic channel. The control channel is mainly used for broadcasting control signaling and data by a base station of the talkback relay system and processing interaction of talkback terminal login, authentication, call application and the like. When the intercom terminal is in standby, the intercom terminal generally waits on the control channel to master the condition of the base station at any time. When the base station does not have any call in progress, only the control channel is in a transceiving state. At this time, if the intercom terminal needs to initiate a voice service or data service call, a call application is firstly carried out on the control channel, and the base station waits for authorization and allocates a service channel to execute the call service.

The main control relay station is used for sending and receiving control data of the control channel. The control data of the control channel comprises interactive data such as talkback terminal login, authentication, call application and the like. The slave control relay station is used for forwarding the service data of the service channel from the talkback terminal. The service data of the service channel comprises voice service data and data service data of the talkback terminal.

In the talkback relay system, the relay station of the control channel has certain control capability on the relay station of the service channel, so the relay station of the control channel is set as a master control relay station, the operation is simple, and the realization is easy.

In one embodiment, the master relay station is further configured to send an access response to the intercom terminal according to the state of the slave relay station after receiving the access request from the intercom terminal, so as to inform the intercom terminal of the information related to the slave relay station.

In this embodiment, the master relay station is a relay station of a control channel. And after the master control relay station and the slave control relay station finish adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time according to the time slot control signal, the master control relay station is also used for broadcasting signals to the talkback terminal. After receiving the access request from the intercom terminal, the master relay station acquires the state information of the slave relay station, determines the state of the slave relay station based on the state information of the slave relay station, and sends an access response to the intercom terminal according to the state of the slave relay station. And when the state of the slave control relay station is determined to be an idle and usable state, sending an access response to the talkback terminal to inform the talkback terminal of the information related to the slave control relay station. The slave control relay station-related information includes access information of the slave control relay station and transmission/reception slot information of the slave control relay station. And the talkback 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 talkback relay system and the talkback terminal can be ensured.

In one embodiment, the master relay station is a relay station for transmitting and receiving control data of a control channel, and the slave relay station comprises a slave relay station for forwarding traffic data of a traffic channel from the intercom terminal and a slave relay station for transmitting and receiving control data of the control channel; when all the slave relay stations in the slave relay stations do not receive the time slot control signal, the designated slave relay station in the slave relay stations transmits the time slot control signal to the slave relay stations except the designated slave relay station, and the designated slave relay station transmits the time slot control signal to the master relay station, wherein the designated slave relay station is the slave relay station for transmitting and receiving the control data of the control channel.

In this embodiment, the master relay station is a relay station of a control channel. The slave control relay stations are provided in plural, and the plural relay stations include a relay station of a control channel and a relay station of a traffic channel. If all the slave control relay stations in the slave control relay stations do not receive the time slot control signal, if all the slave control relay stations do not receive the time slot control signal within a period of time after the power-on start, it indicates that the master control relay station fails to transmit the time slot control signal, and at this time, the designated slave control relay station in the slave control relay stations can be used as a standby master control device, and the designated slave control relay station transmits the time slot control signal to other relay stations. Wherein the designated slave relay station is a preset slave relay station for transmitting and receiving control data of the control channel. Therefore, when the master control relay station fails to control the radio frequency signal transmission time and/or the radio frequency signal receiving time of the master control relay station and the slave control relay station, the appointed slave control relay station is used as an alternative to execute the time master control function of the master control relay station and send time slot control signals to the master control relay station and other slave control relay stations, and the problem that the master control relay station fails to control the radio frequency signal transmission time and/or the radio frequency signal receiving time of the master control relay station and the slave control relay stations due to the failure of the master control relay station is avoided.

In one embodiment, the present application further provides an intercom relay system, as shown in fig. 6, comprising an integrated controller and at least two relay stations. As shown in fig. 6, the at least two relay stations include the relay station 61, the relay station 62, and the relay station 63 … …, and the relay station 6N. Each relay station is an interphone relay station used for increasing the communication distance of the interphone in the talkback cluster base station. The connection structure of the integrated controller and each relay station in the intercom relay system is shown in fig. 6. As shown in fig. 6, each relay station is connected to an antenna, and the reception of the uplink radio frequency signal and the transmission of the downlink radio frequency signal are realized through the antennas.

In this embodiment, the integrated controller is configured to send a timeslot control signal to each relay station; each relay station is used for adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of each relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station in each relay station receives the radio frequency signals.

In this embodiment, each relay station is configured to adjust the radio frequency signal transmission time and/or the radio frequency signal reception time of each relay station according to the timeslot control signal, and includes three implementation manners:

one is as follows: each relay station is used for adjusting the radio frequency signal transmitting time of each relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station in each relay station receives the radio frequency signals.

In this implementation, the talkback relay system can avoid the transmission of the radio frequency signal by the relay stations except any relay station during the period when any relay station of the relay stations receives the radio frequency signal by adjusting the radio frequency transmission time of each relay station. 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 relays in each relay station need to transmit radio frequency signals, the radio frequency signals are transmitted at the same time. Since the radio frequency transmission time of each relay station is the same, the situation that any relay station receives radio frequency signals in the radio frequency transmission time does not exist, and therefore in the situation, the radio frequency receiving time of each relay station can be the same or different. That is, each relay station may receive the rf signal at the same time or may receive the rf signal at different times.

The second step is as follows: each relay station is used for adjusting the radio frequency signal receiving time of each relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station in each relay station receives the radio frequency signals.

In this implementation, the talkback relay system can avoid the transmission of the radio frequency signal by any relay station except any relay station during the period when any relay station of the relay stations receives the radio frequency signal by adjusting the radio frequency receiving time of each relay station. This applies to the case where the uplink and downlink timeslots set by each relay station are the same among the relay stations. For example, the uplink and downlink time slots specified by the DMR protocol are all used. In this case, after the time slot control signal controls the radio frequency receiving time of each relay station to be the same, the radio frequency transmitting time of each relay station is also the same, so that each relay station transmits the radio frequency signal at the same time, and the transmission of the radio frequency signal by other relay stations except any relay station is avoided during the period when any relay station receives the radio frequency signal.

And thirdly: each relay station is used for adjusting the radio frequency signal transmitting time and the radio frequency signal receiving time of each relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station in each relay station receives the radio frequency signals.

In this implementation, each relay station adjusts the rf receiving time and the rf transmitting time at the same time, so that the rf transmitting time and the rf receiving time of each relay station are the same. In this case, the time of the uplink time slot of each relay station in the talkback relay system can be controlled to be strictly aligned, and the time of the downlink time slot of each relay station in the talkback relay system can also be strictly aligned, so that the time period that the downlink time slot of the talkback relay system does not occupy the uplink time slot can be more accurately ensured, and the radio frequency signals are prevented from being transmitted by other relay stations except any relay station during the period that any relay station in each relay station receives the radio frequency signals.

In addition, in the present embodiment, the slot control signal may be any type of signal. For example, the slot control signal may be a square wave signal, a sine-cosine signal, a triangular wave signal, or the like. Each relay station sets a corresponding signal detection method based on the signal characteristics of the slot control signal. When each relay station receives the time slot control signal, the signal detection mode is adopted to identify the signal characteristic of the time slot control signal, and the radio frequency signal transmitting time and/or the radio frequency signal receiving time of each relay station are/is adjusted according to the signal characteristic of the time slot control signal.

For example, in a specific operation, when the timeslot control signal is a square wave signal, one of the signal characteristics of the timeslot control signal is: rectangular waves and only two values, "high" and "low". "high" and "low" herein refer to two values in opposition. The signal detection method in each relay station is as follows: a high value and its duration, and a low value and its duration in the slot control signal are detected. Accordingly, the signal characteristics of the rectangular wave of the slot control signal and the signal characteristics of the two values "high" and "low" can be identified. Specifically, the signal characteristics of the square wave signal can be identified by a signal detection method of pulse detection. At this time, each relay station adjusts the radio frequency signal transmission time and/or the radio frequency signal receiving time according to the signal characteristics of the timeslot control signal as follows: the radio frequency signal transmission time is adjusted based on a "high" value of the timeslot control signal and/or the radio frequency signal reception time is adjusted based on a "low" value of the timeslot control signal.

For example, in a specific operation, when the timeslot control signal is a sine and cosine signal, one of the signal characteristics of the timeslot control signal is: there are two maxima that are inverted and equal in value. The signal detection method in each relay station is as follows: the direction of the time slot control signal is detected and the time points when the signal reaches a maximum value in each direction are recorded. Each relay station adjusts the radio frequency signal transmitting time and/or the radio frequency signal receiving time according to the signal characteristics of the time slot control signal as follows: the radio frequency signal transmission time is adjusted based on a time point of a maximum value in one direction of the slot control signal, and/or the radio frequency signal reception time is adjusted based on a time point of a maximum value in another direction of the slot control signal.

In the talkback relay system, each relay station adjusts the radio frequency signal transmitting time and/or the radio frequency signal receiving time of each relay station based on the time slot control signal. Therefore, for each relay station, the radio frequency signal transmitting time and/or the radio frequency signal receiving time are/is adjusted based on the same signal, and the radio frequency signals are prevented from being transmitted by other relay stations except any relay station during the period that any relay station in each relay station receives the radio frequency signals, so that even if the transmitting and receiving frequencies of all relay stations are the same, the blocking and the interference of the transmission of the downlink frequency in the talkback relay system on the reception of the uplink frequency can be avoided in a time division multiplexing mode, and a duplexer is not required to be used in the method, so that the cost of the talkback relay system can be reduced, and the deployment flexibility of the talkback relay system can be improved.

In one embodiment, each relay station adjusts the transmission time and/or the reception time of the radio frequency signal according to the timeslot control signal when the relay station is initialized or awakened.

In this embodiment, the specific operation of adjusting the transmission time and/or the reception time of the radio frequency signal according to the timeslot control signal in each relay station is the same as the specific operation of adjusting the transmission time and/or the reception time of the radio frequency signal according to the timeslot control signal in the slave relay station in the above embodiment. For the description of each relay station adjusting the transmission time and/or the reception time of the radio frequency signal according to the timeslot control signal when initializing or waking up, refer to the description of the above embodiment in which the slave relay station adjusts the transmission time and/or the reception time of the radio frequency signal according to the timeslot control signal when initializing or waking up.

In one embodiment, the timeslot control signal is a high-low level signal, the high-low level signal includes a high-level signal and a low-level signal, and each relay station is configured to adjust a radio frequency signal transmission time of each relay station according to the high-level signal and/or adjust a radio frequency signal reception time according to the low-level signal; or, each relay station is used for adjusting the radio frequency signal transmitting time of each relay station according to the low level signal and/or adjusting the radio frequency signal receiving time according to the high level signal.

In the embodiment, each relay station adjusts the radio frequency signal transmitting time of each relay station according to the high level signal and/or adjusts the radio frequency signal receiving time according to the low level signal; or, each relay station is configured to adjust the radio frequency signal transmission time of each relay station according to the low level signal and/or adjust the radio frequency signal reception time according to the high level signal, and in both cases, as in the above embodiment, the slave control relay station adjusts the radio frequency signal transmission time of the slave control relay station according to the high level signal and/or adjusts the radio frequency signal reception time according to the low level signal; alternatively, the slave control repeater adjusts the radio frequency signal transmission time of the slave control repeater according to the low level signal and/or adjusts the radio frequency signal reception time according to the high level signal, and the specific operations are the same, and the description of the corresponding embodiments above can be specifically referred to.

In one embodiment, the at least two relay stations comprise a first relay station for forwarding the service data of the service channel from the talkback terminal and a second relay station for sending and receiving the control data of the control channel; when all relay stations in at least two relay stations do not receive the time slot control signal, the second relay station sends the time slot control signal to the first relay station; the first relay station is used for adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the first relay station according to the time slot control signal, and the second relay station is also used for adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the second relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station of the first relay station and the second relay station receives the radio frequency signals.

In this embodiment, if all the relay stations in the at least two relay stations do not receive the timeslot control signal, if all the relay stations do not receive the timeslot control signal within a period of time after the power-on start, it indicates that the integrated controller fails to send the timeslot control signal, and at this time, the second relay station may be used as an alternative main control device, and the second relay station sends the timeslot control signal to the first relay station. Therefore, when the integrated controller fails to control the radio frequency signal transmission time and/or the radio frequency signal receiving time of each relay station, the second relay station can execute the time master control function of the integrated controller as an alternative to send the time slot control signal to the first relay station, and the problem that the radio frequency signal transmission time and/or the radio frequency signal receiving time of each relay station cannot be controlled due to the failure of the integrated controller is avoided.

When the second relay station serves as an alternative main control device and the second relay station sends a timeslot control signal to the first relay station, the specific operation of the first relay station and the second relay station in a data interaction manner and the specific operation of each relay station in adjusting the radio frequency signal transmission time and/or the radio frequency signal reception time according to the timeslot control signal can be referred to the description of the embodiment corresponding to fig. 2. That is, when the integrated controller cannot send the timeslot control signal to the at least two relay stations, the designated relay station of the at least two relay stations serves as the master relay station, and the other relay stations serve as the slave relay stations, and respectively perform the flow operation of adjusting the radio frequency signal transmission time and/or the radio frequency signal reception time according to the timeslot control signal. In this case, the process flow of the embodiment corresponding to fig. 2 is entered, and the specific operation flow refers to the description of the embodiment corresponding to fig. 2. Therefore, when the integrated controller fails, the blocking and interference of the downlink frequency transmission to the uplink frequency reception caused by the transmission of the radio frequency signals from the relay stations except any relay station during the period when any relay station in the talkback relay system receives the radio frequency signals can be avoided.

The application also provides a radio frequency transceiving control method of the talkback relay system, the talkback relay system comprises a master control relay station and a slave control relay station, and the method is applied to the master control relay station. As shown in fig. 7, a radio frequency transceiving control method of an intercom relay system includes the following steps:

s702 generates a slot control signal.

S704, adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the main control relay station according to the time slot control signal.

And S706, sending a time slot control signal to the slave control relay station to instruct the slave control relay station to adjust the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station according to the time slot control signal so as to avoid that the other relay stations except any relay station transmit the radio frequency signal during the period that any relay station of the master control relay station and the slave control relay station receives the radio frequency signal.

The radio frequency transceiving control method of the intercom relay system according to the embodiment is applied to the main control relay station in the intercom relay system, and the specific operation flow can refer to the specific operation description of the main control relay station of the intercom relay system, and is not described in detail herein.

The present application also provides a radio frequency transceiving control method of an intercom relay system, where the intercom relay system includes a master control relay station and a slave control relay station, and the method is applied to the slave control relay station, as shown in fig. 8, the radio frequency transceiving control method of the intercom relay system includes the following steps:

s802, receiving a time slot control signal from the master control relay station, and adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the master control relay station by the master control relay station according to the time slot control signal.

And S804, adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station of the master control relay station and the slave control relay station receives the radio frequency signals.

The radio frequency transceiving control method of the intercom relay system of the embodiment is applied to the slave control relay station in the intercom relay system, and the specific operation flow can refer to the specific operation description of the slave control relay station of the intercom relay system, and is not described in detail herein.

It should be understood that, although the steps in the flowchart are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

The present application further provides various radio frequency transceiving control devices of an intercom relay system, where the intercom relay system includes a master control relay station and a slave control relay station, as shown in fig. 9, the device is applied to the master control relay station, and includes a generating module 902, a first adjusting module 904, and a sending module 906. A generating module 902, configured to generate a timeslot control signal; a first adjusting module 904, configured to adjust a radio frequency signal transmitting time and/or a radio frequency signal receiving time of the master control relay station according to the timeslot control signal; a sending module 906, configured to send a timeslot control signal to the slave relay station to instruct the slave relay station to adjust a radio frequency signal transmission time and/or a radio frequency signal reception time of the slave relay station according to the timeslot control signal, so as to avoid that, during a period in which any one of the master relay station and the slave relay station receives a radio frequency signal, other relay stations except for any one relay station transmit a radio frequency signal.

For specific limitations of the rf transceiving control device of the talkback relay system, reference may be made to the above limitations of the rf transceiving control method of the talkback relay system, and details are not described herein again. All or part of the modules in the radio frequency transceiving control device of the talkback relay system can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

The present application further provides a radio frequency transceiving control device of an intercom relay system, where the intercom relay system includes a master relay station and a slave relay station, as shown in fig. 10, the device is applied to the slave relay station, and includes a receiving module 1002 and a second adjusting module 1004. A receiving module 1002, configured to receive a time slot control signal from a master relay station, where the master relay station adjusts a radio frequency signal transmission time and/or a radio frequency signal receiving time of the master relay station according to the time slot control signal; a second adjusting module 1004, configured to adjust the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave relay station according to the timeslot control signal, so as to avoid that, during a period in which any relay station of the master relay station and the slave relay station receives a radio frequency signal, other relay stations except for any relay station transmit a radio frequency signal.

For specific limitations of the rf transceiving control device of the talkback relay system, reference may be made to the above limitations of the rf transceiving control method of the talkback relay system, and details are not described herein again. All or part of the modules in the radio frequency transceiving control device of the talkback relay system can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

In one embodiment, a computer device is provided, which may be the master relay station described above, and its internal structure diagram may be as shown in fig. 11. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for connecting with an external slave control relay station so as to perform data interaction with the external slave control relay station. The computer program is executed by a processor to implement a radio frequency transmission and reception control method of an intercom relay system.

In one embodiment, a computer device is provided, which may be the slave relay station described above, and its internal structure diagram may be as shown in fig. 11. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer equipment is used for being connected with an external main control relay station so as to perform data interaction with the external main control relay station. The computer program is executed by a processor to implement a radio frequency transmission and reception control method of an intercom relay system.

Those skilled in the art will appreciate that the architecture shown in fig. 11 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.

In one embodiment, a computer device is provided, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program: generating a time slot control signal; adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the main control relay station according to the time slot control signal; and sending a time slot control signal to the slave control relay station to instruct the slave control relay station to adjust the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that the master control relay station and any slave control relay station receive the radio frequency signals.

In one embodiment, a computer device is provided, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program: receiving a time slot control signal from a master control relay station, and adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the master control relay station by the master control relay station according to the time slot control signal; and adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station in the master control relay station and the slave control relay station receives the radio frequency signals.

In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of: generating a time slot control signal; adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the main control relay station according to the time slot control signal; and sending a time slot control signal to the slave control relay station to instruct the slave control relay station to adjust the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that the master control relay station and any slave control relay station receive the radio frequency signals.

In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of: receiving a time slot control signal from a master control relay station, and adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the master control relay station by the master control relay station according to the time slot control signal; and adjusting the radio frequency signal transmitting time and/or the radio frequency signal receiving time of the slave control relay station according to the time slot control signal so as to avoid that other relay stations except any relay station transmit radio frequency signals during the period that any relay station in the master control relay station and the slave control relay station receives the radio frequency signals.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile 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. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.