A handoff packet marker for diffserv in mobile IP-based networks with packet buffering

Seung Beom Lee, Kyeong Hur, Jong-Kook Kim, Doo-Seop Eom

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Performance of TCP can be severely degraded in Mobile IP-based wireless networks where packet losses not related to network congestion occur frequently during intersubnetwork handoffs by user mobility. To solve such a problem in the networks using Mobile IP, the packet buffering method at a base station recovers those packets dropped during handoff by forwarding the buffered packets at the old base station to the mobile users. But, when the mobile user moves to a congested base station in a new foreign subnetwork, those buffered packets forwarded by the old base station are dropped and TCP transmission performance of a mobile user degrades severely. In this paper, a PBM (Packet Buffering Marker) at a base station is proposed to prevent burst losses of out-of-profile packets during handoffs for DiffServ Assured Services. From simulation results, it is shown that PBM scheme improves TCP throughputs of an Assured Service flow during handoffs.

Original languageEnglish
Pages (from-to)438-446
Number of pages9
JournalIEEE Transactions on Consumer Electronics
Volume55
Issue number2
DOIs
Publication statusPublished - 2009 Aug 25

Keywords

  • DiffServ
  • Marker
  • Mobile IP
  • Packet Buffering

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Media Technology

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