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SIP协议作为多媒体应用中的主要文本通信协议,其传统的传输机制已经难以适应移动互联网低带宽,不稳定的网络环境.针对上述问题,研究和设计了一种面向移动互联网的SIP节流传输机制:一方面运用MQTT协议将原始双通道传输改进为单通道传输,另一方面对SIP协议的保活及信令压缩进行优化.移动终端发出的SIP消息将通过MQTT协议的传输通道进行网络传输,由MQTT代理完成对消息体的解析和转发,最后由SIP服务器进行处理.通过上述优化设计,大大节省了SIP数据传输过程中的流量消耗,降低了移动设备对网络带宽、计算资源以及功耗的要求,提高了SIP终端应用的性能体验.
As the main text communication protocol in multimedia applications, the traditional SIP protocol has been difficult to adapt to the low bandwidth and unstable network environment of mobile Internet.Aiming at the above problems, SIP-oriented SIP throttling mechanism is studied and designed : On the one hand, the use of MQTT protocol to improve the original two-channel transmission of single-channel transmission, on the other SIP protocol to ensure the survival and signaling compression is optimized.Mobile terminal sends SIP messages through the MQTT protocol transmission channel for network transmission, The message body is parsed and forwarded by the MQTT agent, and finally processed by the SIP server. Through the above optimization design, the traffic consumption in the SIP data transmission process is greatly saved, reducing the impact of the mobile equipment on network bandwidth, computing resources and power consumption Requirements, improve the performance of SIP terminal applications experience.