Service quality detection-based hot backup multiplexing method and system

Abstract

The invention provides a service quality detection-based hot backup multiplexing method and a service quality detection-based hot backup multiplexing system. The method comprises the following steps that: a plurality of multiplexers input the same multi-service data to a switcher; the switcher performs quality evaluation on the multi-service data from different multiplexers according to a configured switching strategy by taking a service as a unit; the switcher takes the multi-service data of one multiplexer with the best overall quality evaluation according to a quality evaluation result as main output and takes the multi-service data of other multiplexers as standby output; and the service data with the poor quality evaluation in the main output is replaced by the data of the service with the best quality evaluation in the standby output by taking the service as a unit and the replaced main output is output. Judgment and switching are performed by taking the service as the unit in the method, so that switching accuracy is enhanced and equipment reliability is improved greatly.

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 reliability requirements of mobile multimedia broadcasting systems are getting higher and higher. In the existing mobile multimedia broadcasting technology, in order to achieve the reliability of broadcasting and TV program transmission, hot standby switching is often used when broadcasting and TV programs are transmitted. technology. Under normal working conditions, the main equipment provides the system with radio and television program source transmission or other services; when the main equipment fails, it switches to the backup equipment, and the backup equipment provides the system with radio and television program source transmissio...

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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