Service quality detection-based hot backup multiplexing method and system

Abstract

A method and system for multiplexing hot standby are provided by the present invention. A plurality of multiplexers input the same multi-service data to the switcher simultaneously; the quality of the multi-service data from different multiplexers is evaluated respectively in service as a unit according to the configured switching policy, and the multi-service data from the multiplexer with the best total quality evaluation are selected as the main export according to the quality evaluation result, the multi-service data from other multiplexers are used as the standby export; the service data with the bad quality evaluation in the main export is replaced by the service data with the good quality evaluation in the standby export in service as a unit, and the replaced main export is exported. The present invention realizes the switching function without establishing the communication handshaking between the multiplexers or between the multiplexer and the switcher, thus reducing the implementation difficulty and the complexity of the software and hardware; the service quality detection in service as a unit ensures the service quality, realizes the dependable and high-efficiency switching for the service information between a plurality of multiplex devices, shortens the development cycle, and reduces the development cost.

Description

technical field [0001] The invention relates to a multiplexing hot backup method and system based on service quality detection in a mobile multimedia broadcasting system. Background technique [0002] In recent years, China Mobile Multimedia Broadcasting CMMB has been commercialized on a large scale. In order to better meet customer needs, the requirements for the reliability of the mobile multimedia broadcasting system are getting higher and higher. In the existing mobile multimedia broadcasting technology, in order to realize the reliability of broadcasting and TV program transmission, hot standby switching is often used when transmitting broadcasting and TV programs. technology. Under normal working conditions, the main equipment provides broadcast and TV program source transmission or other services for the system; when the main equipment fails, it switches to the standby equipment, and the standby equipment provides broadcast and TV program source transmission or other...

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of method 1 is that although the switch between the master and backup devices can be realized, when the master device fails and the backup device detects that the master device has failed, it will notify the switcher to make a code stream switching input action. takes a long time

[0007] The disadvantage of method 2 is that although the switching time is reduced during the master-standby switchover, the service quality after the switchover cannot be guaranteed. If the master device receives and processes data, some video segments, audio segments or data segments The bit error is greater than that of the backup device. At this time, the serial numbers of the PMS output by the master / standby multiplexing are continuous, but the quality of the output service is obviously higher than that of the backup device. At this time, the switcher performs switching according to the PMS serial number, and the switching cannot be achieved. The real purpose, for the real-time mobile multimedia broadcasting system, the purpose of handover is to ensure the quality of the output service, and this handover method is obviously impossible to achieve

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