一种基于端到端的Ad Hoc网络TCP拥塞控制改进算法  

Improvement of TCP Congestion Control Algorithm for Mobile Ad Hoc Networks through Employment End-to-End Identification

作　　者：蒋道霞[1,2] 潘守伟[3] 周曜[1] 刘凤玉[1] 

机构地区：[1]南京理工大学计算机科学与技术学院,南京210094 [2]江苏财经职业技术学院计算机技术与艺术设计系,淮安223003 [3]淮安工商局信息中心,淮安223001

出　　处：《计算机科学》2010年第7期105-109,共5页Computer Science

基　　金：某部委"十一五"重点项目;淮安市科技局项目(HAG07023)资助

摘　　要：提出了一种基于端到端的AdHoc网络TCP拥塞控制改进算法IADTCP(Improvement AD hoc net work TCP congestion control)。对现有AdHoc网络慢启动方案进行改进,以解决拥塞窗口增长不够平滑的问题;利用两连续数据包单向传输延迟差异IDD和短期吞吐量STT两个度量参数,联合判断网络拥塞状态;用丢包率PLR和包错序率POR判断信道错误、路由改变等网络状态;通过回送的ACK数据包携带网络状态信息,以便让发送端采取适当的控制措施。仿真结果表明,该方案是可行和有效的。This paper proposed an IADTCP （improvement ad hoe network tcp congestion control） algorithm,which improved TCP congestion control algorithm for mobile Ad Hoc networks through employing end-to-end identification. The IADTCP improved the slow-start strategy in traditional Ad Hoc network to resolve the problem that the congestion window grows un-smoothly, used two metrics IDD （inter delay difference） and STT （short term throughput） to perform multi-metric joint identification for congestion detection, used PLR （packet loss ratio） and POR （packet out-of-order delivery ratio） to identify the network states of CHANNEL ERR and ROUTE CHANGE. Then the sender side would take advisable measures in light of network state information carried by back ACK package. The simulation results have validated the feasibility and efficiency of the proposal.

关 键 词：移动AD HOC网络 传输控制协议 拥塞控制 端到端测量 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]