A New Dynamic Adjustment Strategy of Transmission Control Protocol Congestion Window

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A New Dynamic Adjustment Strategy of Transmission Control Protocol Congestion Window

Journal Title: 河南科技大学学报（自然科学版） - Year 2018, Vol 39, Issue 3

Abstract

To relieve low system throughput and bandwidth utilization rate in additive-increase-multiplicativedecrease algorithm of congestion control, a new reliable congestion window ( cwnd) adjustment strategy was proposed. A normal distribution function was built by sampling the round trip delay time, which adapts to the real time network according to updating cwnd dynamically. The reasonability and feasibility of the new strategy and its algorithm was analyzed and proved from the view of mathematics. The results show that compared with original New Reno algorithm and TCP Westwood algorithm, the average value of cwnd of the new algorithm increases by 2. 25% and 3. 68%, and the packet loss rate decreases by 5. 77% and 7. 43%, respectively.Meanwhile, the system throughput and the bandwidth utilization rate are promoted. The system throughput increases by 3. 09% and 9. 25%, and the bandwidth utilization rate increases by 4. 46% and 1. 37%, respectively. The effect of the new strategy is significant.

Authors and Affiliations

Xinyu RU, Yuan LIU

Keywords

congestion window; strategy; round trip delay time; congestion avoidance; slow start threshold;

EP ID EP464903
DOI -
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