基于TCP Vegas拥塞控制算法的改进研究  

Research on Improvement of Congestion Control Algorithm Based on TCP Vegas

作　　者：张奎 李丙春 ZHANG Kui;LI Bing-chun(School of Computer Science and Technology,Kashi University,Kashi,Xinjiang,844006,China)

机构地区：[1]喀什大学计算机科学与技术学院,新疆喀什844006

出　　处：《新疆师范大学学报（自然科学版）》2021年第1期18-21,48,共5页Journal of Xinjiang Normal University(Natural Sciences Edition)

基　　金：新疆高校科研计划项目(XJEDU2019Y041);喀什大学校内课题(2020)2738。

摘　　要：文章针对同构型网络环境下Vegas算法优于其他算法,而在异构型网络环境下由于Vegas算法保守型的拥塞避免机制,导致其网络性能表现较差进而未能获得广泛应用的问题,在分析Vegas算法工作原理的基础上,提出一种Vegas参数优化算法。NS2仿真结果表明:Vegas参数优化算法具有大拥塞窗口和高吞吐量、低误码率等性能,与Reno算法共存兼容性较好,从而验证了算法的有效性。Aiming at the problem that the Vegas algorithm is superior to other algorithms in a homogeneous network environment,but in the heterogeneous network environment,due to the conservative congestion avoidance mechanism of the Vegas algorithm,its network performance is poor and therefore it cannot be widely used.Based on the working principle of Vegas algorithm,a Vegas parameter optimization algorithm was proposed.NS2 simulation results show that the Vegas parameter optimization algorithm has large congestion window,high throughput,low bit error rate and other performances,and it has good coexistence compatibility with Reno algorithm,thus verifying the effectiveness of the algorithm.

关 键 词：拥塞控制 异构型网络 Vegas算法 改进研究 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]