An Enhancement to Freeze-TCP to Improve Its Performance

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2004, Vol. 27 ›› Issue (6): 69-73.

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An Enhancement to Freeze-TCP to Improve Its Performance

FAN Rui^1,2 ,　CHENG Shi-duan¹

1. Stat e Key Laboratory of Netw orking and Sw it ching, Bei jing Universi ty of Post s and Tel ecommunications , Bei jing 100876, China;
2. Inst itut e of Comp uting Technolog y, Chines e Academ y of Sciences, Beijing 100080, Ch ina

Received:2003-06-30 Online:2004-06-28

Abstract

Abstract: A scheme called Freeze-TCP+ is presented to improve the performance of transmission control protocol (TCP) in mobile environment. Freeze-TCP+ is based on Freeze-TCP and incorporates network measurement mechanism. Data sender in Freeze-TCP+ would not send all the packets in the window immediately as it does in Freeze-TCP when handover occurs but set its slow start threshold to a measurement result and start to transmit packets from slow start phase. Freeze-TCP+ solve the problems that Freeze-TCP faces when handover occurs in heterogeneous networks, i.e., many packets are lost due to burst transmission or the resources in the new network can not be utilized efficiently. Network simulation shows that Freeze-TCP+ can improve the performance of Freeze-TCP whatever kinds of handover occur.

Key words: transmission control protocol, mobile network, network measurement

CLC Number:

TP393

FAN Rui ,　CHENG Shi-duan. An Enhancement to Freeze-TCP to Improve Its Performance[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2004, 27(6): 69-73.

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An Enhancement to Freeze-TCP to Improve Its Performance

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