一种新的卫星网络传输控制协议

刘炯; 曹志刚

doi:10.3724/SP.J.1146.2007.00411

一种新的卫星网络传输控制协议

doi: 10.3724/SP.J.1146.2007.00411

刘炯^{①② 曹志刚,},
曹志刚

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- 被引次数: 0
出版历程
- 收稿日期: 2007-03-22
- 修回日期: 2007-07-18
- 刊出日期: 2008-10-19

A Novel Transmission Control Protocol for Satellite Networks

Liu Jiong^{①② 曹志刚
,},
Cao Zhi-Gang

摘要

摘要: 为了解决TCP协议在卫星通信网络中性能差的问题，该文提出了一种适合卫星网络的新型传输控制协议TP-Satellite。为了加速在连接开始阶段拥塞窗口(cwnd)增涨速度，该协议不再采用传统的Slow Start策略，而是采用一种新的窗口增涨策略超起始策略。为了将误码与网络拥塞造成的数据丢失区分开，协议还采用基于不同优先级IP数据交错发送的丢失判断策略。另外，协议采用了主动周期应答策略。通过理论分析和仿真比较，TP-Satellite协议能够迅速提升数据发送速率和有效地区分数据丢失原因，明显提高前向链路的吞吐量，同时降低反向链路的带宽占用。
- 卫星通信 /
- 传输控制协议 /
- 长传播延时 /
- 随机和突发误码 /
- 带宽不对称
Abstract: To address the problem that TCP performance degrades significantly on the Satellite communication networks, a new transport control protocol, TP-Satellite is introduced. In order to increase the Congestion Window (cwnd) rapidly at the beginning of data transmission, the traditional Slow Start strategy is replaced by a new strategy, named as Super Start. In order to decouple congestion decision from errors, a new scheme, which is based on two class priority IP packets alternately sending, is included in TP-Satellite. Bandwidth asymmetry problem is addressed by adoption of a ACK periodically sending strategy. Theoretical analyses and simulations indicate that TP-Satellite can increase the sending rate rapidly, discriminate the reason of packet loss effectively, enhance throughput performance significantly, and reduce the bandwidth used in the reverse path sharply.
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参考文献(1)

[1] Allman M, Paxson V, and Stevens W. TCP CongestionControl. RFC 2581, 1999. [2] Partridge C and Shepard T. TCP/IP performance oversatellite links. IEEE Network, 1997, 11(5): 44-49. [3] Allman M, Glover D, and Sanchez L. Enhancing TCP OverSatellite Channels using Standard Mechanisms. RFC 2488,1999. [4] Lakshman T V and Madhow U. The performance of TCP/IPfor networks with high bandwidth-delay products andrandom loss[J].IEEE/ACM Trans. on Networking.1997, 5(3):336-350 [5] Balakrishnan H, Padmanabhan V, and Katz R. The effects ofasymmetry on TCP performance. Proc. 3rd ACM/IEEEMobiCom Conf, Sept. 1997: 77-89. [6] Border J, Kojo M, and Griner J, Performance EnhancingProxies Intended to Mitigate Link Related Defradations.RFC 3135, 2001. [7] Mario M, Michele R, and Giacomo M. PETRA: Performanceenchancing transport architecture for satellitecommunicaions[J].IEEE J. Select. Areas Commun.2004, 22(2):320-332 [8] Luglio M, Sanadidi M Y, and Gerla M, et al.. On-boardsatellite split TCP proxy[J].IEEE J. Select. Areas Commun.2004, 22(2):362-370 [9] Padmanabhan V N and Katz R. TCP fast start: A techniquefor speeding up web transfer. IEEE Globecom, 1998, 157-162. [10] Akyildiz I F, Giacomo M, and Sergio P. TCP-peach: A newcongestion control scheme for satellite IP networks[J].IEEE/ACM Trans. Networking.2001, 9(3):307-321 [11] Akyildiz I F, Zhang X, and Fang J. TCP-Peach+:Enhancement of TCPPeach for satellite IP networks. IEEECommun. Lett., 2002, 6(7): 303-305. [12] Henderson T and Katz R. Transport protocols for internetcompatible satellite networks[J].IEEE J. Select. AreasCommun.1999, 17(2):326-344 [13] Katabi D, Handley M, and Rohrs C. Congestion control forhigh bandwidth delay product networks. ACM SIGCOMM2002, Pittsburgh, Aug. 2002: 89-102. [14] Casetti C, Gerla M, and Mascolo S, et al.. TCP Westwood:Bandwidth estimation for enhanced transport over wirelesslink. in Proc. Mobicom 2001, Rome. Jul. 2001: 287-297.

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