一种移动即时通讯消息重传改进机制

为应对移动即时通讯(instant messaging,IM)消息频繁重传给服务器和网络造成的负荷,基于随机过程的更新理论,提出移动即时通讯消息重传模型来研究消息重传性能.仿真实验结果表明,平均消息重传数为1.22次,与重传模型分析结果1.25次非常接近,取得比同类型模型更好的描述能力.基于建模分析结果提出一种移动即时通讯消息重传改进机制,采用固定重传间隔,设置重传计数器控制最大尝试次数,相关仿真结果表明该机制能有效减少消息重传次数,同时又不显著增加消息传递时间.最后利用概率论中独立同分布的中心极限定理分析消息重传机制如何影响移动即时通讯消息传递的总体服务质量,并给出调整重传间隔参数等服务优化建议.

An improved message retransmission mechanism of mobile instant messaging

As a new type of campus media platform in mobile internet era, the official wechat of colleges and universities has made rapid progress. It features authoritative content, young audience, multiple ways of information communication and comprehensive interaction on-and-off campus. Its function has exceeded the current modes of information circular and simple service on campus, which helps to enhance brand and image building, boost cohesion, cultural development and profound service on campus. Therefore, it has become the light brigade with internet plus for campus construction. Its user-oriented strategy, vision priority strategy, interaction strategy and so on worth our thinking and learning.