摘要：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.
关键词：MSS;UMTS;handover;delivery;multimedia;RTP;RTCP;QoS;jitter buffer;packet loss rate
