A TCP Enhanced Scheme Based on Bottleneck Bandwidth Estimation for Satellite Links

Author

Yin, Zhizhong ; Zhang, Jiguang ; Zhou, Xianwei ; Wu, Qiwu

Author_Institution

Sch. of Inf. Eng., Univ. of Sci. & Technol. Beijing, Beijing, China

fYear

2009

fDate

24-26 Sept. 2009

Firstpage

1

Lastpage

4

Abstract

Based on estimation to the bottleneck bandwidth, a TCP enhanced scheme for satellite link, TCP-BBE (TCP for bottleneck bandwidth estimation) which is improved upon TCP Reno, is brought forward. There are three key innovations in this scheme. Firstly, in the progress of bandwidth estimation, to avoid error caused by some ACK´s extra delay, more than two back-to-back packets are used by averaging their ACKs´ interval. Secondly, to avoid infecting the estimation precision by delay ACK, a reserved bit is used to reset the ACK delay send timer. Thirdly, because of packets burst in satellite link, to avoid pricking up the congestion impact by estimation packets, a small interval timer is used to space the estimation packets and the user packets. TCP-BBE modifies the congestion window and the slow start threshold in time by the estimation value. By comparing TCP-BBE to TCP Reno, the experiment result shows TCP-BBE improves the transmission efficiency obviously.

Keywords

satellite links; transport protocols; ACK delay send timer; TCP enhanced scheme; bottleneck bandwidth estimation; congestion window; satellite links; slow start threshold; Analytical models; Bandwidth; Delay estimation; Estimation error; Low pass filters; Motion control; Motion estimation; Satellites; Sections; Technological innovation;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-3692-7

Electronic_ISBN

978-1-4244-3693-4

Type

conf

DOI

10.1109/WICOM.2009.5303225

Filename

5303225