摘要
TCP流的不公平性在无线自组网中是一个广泛存在的问题;基于服务曲线最早期限优先(Service Curve Earliest Dead-line First,SCED)调度模型,推导了保证节点内资源公平分配的无线自组网TCP流的调度算法,结合已有的节点间信道资源公平分配算法,提出TCP数据流公平性改进策略;仿真实验表明,基于服务曲线的混合改进策略在没有严重降低TCP吞吐量的情况下改进了其公平性.
The un-fairness issue is a widely exist problem in wireless ad hoc networks;A TCP data flow scheduling algorithm that can guarantee node＇s resource be distributed fairly for wireless ad hoc networks is provided,which based on Service Curve Earliest Deadline first scheduling model,incorporate with the already exist link distributed algorithm between wireless nodes then the TCP flow fairness improving scheme is proposed;Simulation results show that the TCP joint improving scheme based on service curve improved the TCP fairness without significantly impairing TCP throughput in wireless ad hoc networks.
出处
《小型微型计算机系统》
CSCD
北大核心
2010年第12期2413-2417,共5页
Journal of Chinese Computer Systems
基金
国家自然科学基金项目(60873082)资助
总装备部预研基金项目(9140A15030308QT4801)资助
中南大学研究生学位论文创新基金项目资助
湖南省教育厅科学研究项目(09C1115)资助
国家"九七三"重点基础研究发展计划项目(2007CB416608)资助
关键词
无线自组网
TCP流
SCED调度
公平性
性能仿真
wireless ad hoc network
TCP Flow
SCED scheduling
fairness
performance simulation
