ScienceDirect - Computer Communications : Priority forwarding for improving the TCP performance in mobile IP based networks with packet buffering

Computer Communications
Volume 30, Issue 6, 26 March 2007, Pages 1337-1349

Font Size:

Abstract - selected

Article Toolbox

E-mail Article

Add to my Quick Links

Bookmark and share in 2collab (opens in new window)

Request permission to reuse this article

Cited By in Scopus (2)

Related Articles in ScienceDirect

Improving TCP handoff performance in Mobile IP based ne...
Computer Communications

Improving TCP performance in ad hoc networks using sign...
Ad Hoc Networks

An accurate model for analyzing wireless TCP performanc...
Computer Networks

Performance of a GridFTP overlay network
Future Generation Computer Systems

Modeling short-lived TCP connections with open multicla...
Computer Networks

View More Related Articles

View Record in Scopus

doi:10.1016/j.comcom.2007.01.001

Priority forwarding for improving the TCP performance in mobile IP based networks with packet buffering

References and further reading may be available for this article. To view references and further reading you must purchase this article.

Kyeong Hur^a^,, Doo-Seop Eom^b^,^,, Yeon-Woo Lee^c, Jae-Ho Lee^a and Seokjoong Kang^d

^aDepartment of Computer Education, Gyeongin National University of Education, 407-753, Gyesan-Dong San 59-12, 45 Gyodae-Gil Gyeyang-Gu Incheon, Republic of Korea

^bDepartment of Electronics Engineering, Korea University, 1, 5-Ga, Anam-Dong, Sungbuk-Gu, Seoul 136-701, Republic of Korea

^cDepartment of Information and Communication Group School of Information Engineering, Mokpo National University, Republic of Korea

^dComputer Science Department, Kwangwoon University, Republic of Korea

Received 3 May 2005;

revised 20 December 2006;

accepted 2 January 2007.

Available online 11 January 2007.

Abstract

Packet losses during the handoff operation by the route optimization extension of the Mobile IP causes performance degradation at the transmission control protocol (TCP). To prevent such degradation a number of packet buffering based methods have been proposed in the literature. However, as the mobile host user continually changes location and can sometimes move into a congested BS in a new foreign subnetwork, its buffered packets are likely to be dropped at the new BS. This can lead to losses at the TCP connections of the mobile user host in the new subnetwork, as well as at the TCP connections of the new BS which experiences severe performance degradation due to the abrupt increase in congestion by the forwarded burst of packets (i.e., global synchronization). This paper proposes a priority forwarding (PF) scheme designed to significantly improve the performance of the packet buffering methods. The proposed PF scheme does not require any modification to the Mobile IP protocol with route optimization extension. The simulation results show that by using the PF scheme the period of global synchronization at the inter-subnetwork handoff is made shorter due to the reduction in packet droppings in the random early detection (RED) buffer. This improves the TCP performance in wireless networks employing Mobile IP with packet buffering.

Keywords: TCP; Mobile IP; Handoff; Packet buffering