CMT-SC:异构无线环境下CMT丢包类型识别机制  

CMT-SC:Packet loss detection scheme for CMT in heterogeneous wireless environment

作　　者：随楠楠 王聪[1] 张冬梅[1] 周欣[2] 徐友云[1,3] 

机构地区：[1]解放军理工大学通信工程学院 [2]中国人民解放军63612部队 [3]南京邮电大学通信与网络技术国家工程研究中心

出　　处：《计算机工程与应用》2018年第3期94-99,共6页Computer Engineering and Applications

基　　金：国家自然科学基金(No.61371123;No.61301165);国家自然科学基金重大研究计划(培育项目)(No.91438115)

摘　　要：M2M网关与M2M服务器之间采用CMT协议传输数据,针对CMT协议不能对异构无线环境下的丢包原因进行判别的问题,提出了一种基于路径拥塞状态的丢包类型识别机制CMT-SC。CMT-SC提出了平稳特征参数(S参数)和拥塞特征参数(C参数),基于路径的往返时间评估路径状态;依据S参数和C参数,CMT-SC将无线环境下的丢包类型分为无线随机丢包和拥塞丢包,分别执行相应的拥塞控制机制。基于NS-2.35的仿真结果表明,CMT-SC能够有效提升吞吐量,丢包类型识别准确率较高。CMT is exploited for data transmission between M2 M gateway and M2 M server. However, CMT cannot identify packet loss reasons in the heterogeneous wireless environment. Based on path congestion status, this paper proposes a loss detection mechanism called CMT-SC to solve this problem. CMT-SC utilizes steady parameters(S parameters)and congestion parameters(C parameters)to estimate the path status based on round trip time. According to S parameters and C parameters, CMT-SC divides the packet loss type into wireless loss and congestion loss, and executes the corresponding congestion control mechanism. The experimental results based on NS-2.35 show that CMT-SC can improve the throughput efficiently, and the detection accuracy of CMT-SC is high.

关 键 词：M2M 并发多路传输(CMT) 异构无线网络 无线丢包识别 拥塞控制 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]