一种基于全IP蜂窝网络的实时业务传输机制*

针对无线蜂窝网络和Internet的业务特点,分析了在信道带宽有限、传输误码率高的无线网络中传输基于IP的实时业务所面临的问题.针对下一代蜂窝网络中基于IP技术实现多媒体业务要求,从无线网络上实际传送的码流角度,结合ROHC机制提出一种在信道传输速率不变的条件下,提高码流传输效率的方法,并且探究了空中链路的全IP机制.从采样编码后输出的净码流和经过封装后的码流两个角度来分析,提出了高效的针对全IP的蜂窝网络的实时交互式语音业务的新方案.

Novel Mechanism to Efficiently Transport Real time Traffics Based on All IP Cellular Network

Aiming at the characteristics of the wireless cellular network and Internet,the problem on the real-time services was analyzed based on IP in the wireless network,which had limited bandwidth and high transfererrors ration.It put forward a method of improving the transport efficiency in the steady speed of transport from the transport strean in the wireless network in fact,in allusion to the multimedia services based on IP technology in the next generation cellular network and ROHC Framework.It researched the AllIP mechanism of wireless link.At last,it provided an efficient scheme on realizing real-time interactive voice service in All-IP celluler network,from the point of view of pune stream which was output after sampling coding and enveloped stream.