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针对移动通信网络下视频通信的质量要求,本文引入了动态再协商的思想,在SDP协议基础上进行了改进和扩展,提出了一种适合媒体通信的动态非对称媒体协商协议,该协议的基本思想是在扩展原SDP协议包格式的基础上,基于RTCP协议实时检测网络状况,根据网络变化情况,调整媒体协商参数,优化视频通信质量。仿真实验结果表明:该动态非对称动态媒体算法能够提供不同业务的媒体协商协议保障,能很好地均衡网络负载,提高视频通信的质量。
Aiming at the quality requirements of video communication in mobile communication network, this paper introduces the idea of dynamic renegotiation, and improves and expands on the basis of SDP protocol. A dynamic asymmetric media negotiation protocol suitable for media communication is proposed. The basic protocol The idea is to extend the original SDP protocol packet format, based on RTCP protocol real-time detection of network conditions, according to changes in the network, adjust the media negotiation parameters, optimize video communication quality. The simulation results show that this dynamic asymmetric dynamic media algorithm can provide media negotiation protocol guarantees for different services, well balance network load and improve video communication quality.