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ER-TCP (Exponential Recovery-TCP): High-Performance TCP for Satellite Networks
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- Authors
- Mankyu PARK, Minsu SHIN, Deockgil OH, Doseob AHN, Byungchul KIM, Jaeyong LEE
- Issue Date
- 2012-05
- Citation
- IEICE Transactions on Communications, v.E95-B, no.5, pp.1679-1688
- ISSN
- 0916-8516
- Publisher
- 일본, 전자정보통신학회 (IEICE)
- Language
- English
- Type
- Journal Article
- Abstract
- A transmission control protocol (TCP) using an additive increase multiplicative decrease (AIMD) algorithm for congestion control plays a leading role in advanced Internet services. However, the AIMD method shows only low link utilization in lossy networks with long delay such as satellite networks. This is because the cwnd dynamics of TCP are reduced by long propagation delay, and TCP uses an inadequate congestion control algorithm, which does not distinguish packet loss from wireless errors from that due to congestion of the wireless networks. To overcome these problems, we propose an exponential recovery (ER) TCP that uses the exponential recovery function for rapidly occupying available bandwidth during a congestion avoidance period, and an adaptive congestion window decrease scheme using timestamp base available bandwidth estimation (TABE) to cope with wireless channel errors. We simulate the proposed ER-TCP under various test scenarios using the ns-2 network simulator to verify its performance enhancement. Simulation results show that the proposal is a more suitable TCP than the several TCP variants under long delay and heavy loss probability environments of satellite networks. Copyright © 2012 The Institute of Electronics, Information and Communication Engineers.
- KSP Keywords
- Additive increase multiplicative(AIMD), Additive increase multiplicative decrease (AIMD) algorithm, Advanced Internet services, Available bandwidth estimation, Congestion Avoidance, Congestion Window, Congestion control algorithm, High performance, Information and communication, Long propagation delay, Loss probability