| 卫星网络中基于BaseRTT计算的TCP Vegas算法改进 |
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| 引用本文： | 潘成胜,宣景朋,魏德宾,杨力. 卫星网络中基于BaseRTT计算的TCP Vegas算法改进[J]. 系统仿真学报, 2012, 24(6): 1254-1258 |
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| 作者姓名： | 潘成胜 宣景朋 魏德宾 杨力 |
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| 作者单位： | 辽宁省通信网络与信息处理重点实验室,辽宁116622／大连大学信息工程学院,辽宁116622 |
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| 基金项目： | 国家863计划项目(2009AAXX);辽宁省教育厅创新团队(2009T004) |
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| 摘 要： | 传统的TCPVegas是一种基于测量的拥塞控制算法,并没有考虑通信节点移动的情况。针对卫星间距离变化对往返时延的影响较大,以及带宽分配的不公平性问题,提出一种基于最小往返时延计算的拥塞控制算法Vegas_Sat(Vegas over Satellite)。该算法根据卫星间的距离计算出最小往返时延,据此进行拥塞控制,提高了网络的资源利用率,改善了带宽分配的不公平性问题。最后,利用NS2的仿真软件验证了算法的有效性。
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| 关 键 词： | 拥塞控制 TCP Vegas 卫星网络 最小往返时延 |
Improvement on TCP Vegas Algorithm Based on BaseRTT Computation in Satellite Network |
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| PAN Cheng-sheng,XUAN Jing-peng,WEI De-bin,Yang Li. Improvement on TCP Vegas Algorithm Based on BaseRTT Computation in Satellite Network[J]. Journal of System Simulation, 2012, 24(6): 1254-1258 |
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| Authors: | PAN Cheng-sheng XUAN Jing-peng WEI De-bin Yang Li |
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| Affiliation: | 1.Key Laboratory of Communications Network and Information Processing,Dalian University,Dalian 116622,China; 2.College of Information Engineering,Dalian University,Dalian 116622,China) |
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| Abstract: | TCP Vegas is a measurement-based congestion control algorithm,it does not consider the communication node movement.To overcome the changes of delay due to the satellite movement,and the problem of malapportioned bandwidth,Vegas_Sat algorithm was proposed for the satellite network.The new algorithm calculated the Base_RTT using the distance between the communicate satellites to congestion control.The Vegas_Sat improved network resource utilization and the problem of malapportioned bandwidth.Finally,the validity of the new algorithm was verified by NS2 simulation software. |
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| Keywords: | congestion control TCP Vegas satellite network BaseRTT |
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