Movement-aware vertical handoff of WLAN and mobile WiMAX for seamless ubiquitous access

Wonjun Lee, Eunkyo Kim, Joongheon Kim, Inkyu Lee, Choonhwa Lee

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

This paper addresses a movement-aware vertical (MAV) handover algorithm between WLAN and Mobile WiMAX for seamless ubiquitous access. An MAV handover algorithm is proposed in this paper to exploit movement pattern for avoiding unnecessary handovers in the integrated WLAN and Mobile WiMAX networks. If a mobile station (MS)'s velocity is high and its movement pattern is irregular, unnecessary handovers likely occur more frequently. Therefore, the MS velocity and moving pattern are important factors for the handover decision procedure. To avoid unnecessary handovers, the MAV handover algorithm adjusts the dwell time adaptively and predicts the residual time in the cell of target base station (BS). Consequently, the adaptive dwell timer of MAV handover algorithm allows an MS a better connection as long as possible. Our simulation results show that the reduction of unnecessary handovers by leads to significant throughput improvements.

Original languageEnglish
Pages (from-to)1268-1275
Number of pages8
JournalIEEE Transactions on Consumer Electronics
Volume53
Issue number4
DOIs
Publication statusPublished - 2007 Nov

Keywords

  • IEEE 802.11 WLAN
  • IEEE 802.16e mobile WiMAX
  • Movement-awareness
  • Ubiquitous computing
  • Vertical handover

ASJC Scopus subject areas

  • Media Technology
  • Electrical and Electronic Engineering

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