A Seamless Media Stream Delivery Scheme between MSS and UMTS with SIP-based Soft Handover
A Seamless Media Stream Delivery Scheme between MSS and UMTS with SIP-based Soft Handover
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DOI：
10.4304/jnw.7.8.1233-1238
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发表时间：
2012-01
期刊：
影响因子：
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通讯作者：
Hongguang Lan;Yilei Sun;X. Xia;Ming Ma;Jianjun Wu
中科院分区：
文献类型：
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作者：
Hongguang Lan;Yilei Sun;X. Xia;Ming Ma;Jianjun Wu
更多的多媒体业务是基于IP网络的，如VoIP和IPTV。在移动的卫星系统（MSS）和UMTS之间的垂直切换过程中，多媒体业务会出现时延抖动、丢包和乱序等问题。通过对RTP和RTCP协议进行扩展，修改终端缓冲区大小和RTP包播放时间，使业务在切换过程中不中断。分析结果表明，该方案可以实现MSS和UMTS之间的无缝媒体流切换。
A greater of multimedia services are based on the IP network, such as VoIP and IPTV. During the vertical handover process between Mobile Satellite System (MSS) and UMTS, delay jitter, packet loss and disorder will happen to multimedia services. We used the method of extension of RTP and RTCP protocols, modification of terminal buffer size and RTP packet play time to make the service not disrupted during handover. Analysis results demonstrate that this scheme could achieve the seamless media stream handover between MSS and UMTS.