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针对高误码率链路上的多媒体通信,提出了一种高效率、高鲁棒性的复接方案。方案采用了双层的数据复接结构,结合了定长帧和变长帧复接方案的优点,在高误码率链路上提供了良好的同步特性。同时多种业务的数据流能灵活地进行复接,从而提高了整体的通信效率。该方案针对实时和非实时业务进行复接,有效降低了实时业务的通信时延。实验证明:与ITU-TH.223附录C中提出的方案相比,该方案在10-2随机误码的链路上,通信效率提高了17.3%。
Aiming at the multimedia communication on the link with high bit error rate, a high efficiency and high robust multiplexing scheme is proposed. The scheme adopts a double-layer data multiplexing structure, combining the advantages of the fixed-length frame and the variable-length frame multiplexing scheme, and provides good synchronization characteristics on a high bit error rate link. At the same time a variety of business data streams can be flexibly multiplexed, thereby enhancing the overall communication efficiency. The scheme is aimed at multiplexing the real-time and non-real-time services, effectively reducing the communication delay of real-time services. Experiments show that: Compared with the scheme proposed in Appendix C of ITU-T H.223, the scheme improves the communication efficiency by 17.3% on 10-2 random error links.