粒度区分和可调的无线流媒体可靠传输策略  

A Reliable Transport Scheme for Wireless Streaming Media With Unequal and Adaptive Protection

作　　者：喻莉[1] 汪恒晶[1] 戴声奎[1] 罗宁[1] 

机构地区：[1]华中科技大学电子与信息工程系宽带无线与多媒体研究中心,湖北武汉430074

出　　处：《微电子学与计算机》2005年第8期121-123,126,共4页Microelectronics & Computer

基　　金：国家863计划重大项目(2002AA119010)

摘　　要：为实现无线接入流媒体可靠传输和降低应用层设计复杂度,提出结合交织编码和RS编码,实现对应用层数据有效的分帧/重组,区分数据重要级别并采用不平等粒度的保护,支持根据信道状况对保护粒度和帧长度的自适应调节。该策略增强了传输层功能,实现了灵活的数据保护方式,显著提高了无线流媒体的传输质量。A transport scheme for streaming media over wireless access network is proposed in this paper. Combining with the interweave and RS code, the Unequal Erase Protection （UEP） scheme is achieved based on distinguishing the data importance level. The scheme realize segment/assemble of data from application layer, support adaptive adjusting of protection granularity according to channel status, improve the function of transport layer, simplify the design complexity of application layer, and greatly improve QoS of wireless streaming media with flexible error protection.

关 键 词：流媒体 交织 不平等保护 分帧/重组 

分 类 号：TN919.72[电子电信—通信与信息系统]