一種異構網絡TCP擁塞控制算法

王志明; 曾孝平; 劉學; 陳禮; 郭博文

doi:10.11999/JEIT150774

一種異構網絡TCP擁塞控制算法

doi: 10.11999/JEIT150774 cstr: 32379.14.JEIT150774

基金項目:

國家自然科學基金(61171089, 61302054)，國家自然科學基金項目重大研究計劃(91438104)，重慶大學研究生科研創(chuàng)新基金(CYS14005)

計量
- 文章訪問數(shù): 1884
- HTML全文瀏覽量: 167
- PDF下載量: 812
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2015-06-29
- 修回日期: 2015-11-17
- 刊出日期: 2016-04-19

TCP Congestion Control Algorithm for Heterogeneous Networks

Funds:

The National Natural Science Foundation of China (61171089, 61302054), The Training Program of the Major Research Plan of the National Natural Science Foundation of China (91438104), The Scientific Research Innovation Program of Chongqing University for Graduate Students (CYS14005)

摘要

摘要: 針對互聯(lián)網中端對端帶寬、時延和丟包率等的差異性日益加劇，導致TCP傳輸性能嚴重退化，該文提出一種鏈路自適應TCP擁塞控制算法(INVS)。INVS在擁塞避免階段初期采用基于指數(shù)函數(shù)的凸窗口增長函數(shù)，以提高鏈路利用率；在窗口增長函數(shù)中引入了自適應增長因子實現(xiàn)窗口增長速率與鏈路狀態(tài)相匹配；采用了自適應隊列門限的丟包區(qū)分策略以提高無線環(huán)境下TCP的性能。性能分析和評估表明，INVS提高了TCP擁塞控制算法的吞吐量、公平性、鏈路利用率和RTT公平性。
- 異構網 /
- 傳輸控制協(xié)議 /
- 擁塞控制 /
- 時延帶寬積
Abstract: The end-to-end bandwidth, the Round Trip Time (RTT) and the packet loss rate vary over many orders of magnitude in Internet, which cause significant performance degradation of Transmission Control Protocol (TCP). To cope with this, a path-adaptive TCP congestion control protocol, called INVerse Sigmoid (INVS), is proposed. INVS employs an exponential function based convex growth function of congestion window to improve the path utilization. An adaptive increase factor in the growth function is introduced to match the window growth rate with the path condition. An adaptive queue-threshold in the loss distinguishing scheme is used to enhance the performance of TCP over wireless links. The performance analysis and evaluation show that INVS improves the throughput, the fairness, the total link utilization and the RTT-fairness of TCP congestion control algorithm.
- Heterogeneous networks /
- Transmission Control Protocol (TCP) /
- Congestion control /
- Bandwidth Delay Product (BDP)

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參考文獻(19)

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