Abnormal protection method and relay station of extended trunking communication system
A technology of abnormal communication and trunking communication, applied in the field of abnormal protection of the system, it can solve the problems of reduced system access performance, no processing by the repeater, and increased system access time, etc., so as to improve the anti-interference ability and flexible interference. Scenario processing scheme and the effect of improving system access performance
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Embodiment 2
[0066] When dealing with the uplink frequency interference of the repeater station, the present invention provides a second embodiment of an abnormality protection method of an extended trunking communication system, the process of which is as follows image 3 As shown, the method includes:
[0067] S301. The relay station monitors the uplink frequency interference in real time;
[0068] The specific detection methods can be:
[0069] The repeater is powered on and initialized, the system network connection is normal, and stays in the standby state; the repeater is in the transmitting or dormant state, and the receiving end detects that the carrier is valid; the repeater starts the carrier detection timer; waits for the carrier detection timer to expire;
[0070] While waiting for the carrier detection timer to expire, if the repeater detects that the carrier is invalid, it stops the carrier detection timer. The repeater considers that the uplink frequency point has no interf...
Embodiment 3
[0084] When dealing with the downlink frequency interference of the repeater station, the present invention provides a third embodiment of an abnormality protection method of an extended trunking communication system, and its flow is as follows Figure 4 As shown, the method includes: .
[0085] S401. Real-time monitoring of downlink frequency interference;
[0086] The specific detection methods can be:
[0087] The repeater monitors the downlink frequency interference in real time through the detection equipment, and confirms the existence of the downlink frequency interference when receiving the notification of the downlink interference of the repeater sent by the detection equipment.
[0088] The detection device is in the receiving state of the downlink frequency of the repeater.
[0089] The detection device detects that the carrier is valid, but cannot decode a valid signal, or can decode a valid signal but its characteristics are determined to be signals outside the ...
Embodiment 5
[0115] When dealing with the disconnection of the repeater station, the present invention provides a fourth embodiment of an abnormality protection method of an extended trunking communication system, the process of which is as follows Figure 6 As shown, the method includes:
[0116] S601. The repeater monitors its own abnormal disconnection status in real time;
[0117] S602. The repeater station detects that it is abnormally disconnected, and then confirms that the communication of the repeater station is abnormal;
[0118] S603. Determine whether the repeater is a free repeater; if yes, execute step S605; otherwise, execute step S604;
[0119] S604. When the own repeater is not a free repeater, update its own repeater state information, and send broadcast state information to the terminal, the broadcast state information carries the state information of the repeater with abnormal communication.
[0120] S604. When the relay station is a free relay station, update its own...
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