Reducing handover delay by location management in mobile WiMAX multicast and broadcast services

Ji Hoon Lee, Sangheon Pack, Taekyoung Kwon, Yanghee Choi

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Mobile Worldwide Interoperability for Microwave Access (WiMAX) includes a multimedia multicast/broadcast service (MBS), but delay-sensitive applications such as video and audio streaming require the combination of efficient handling of wireless-link bandwidth and reduced handover delays, which remains a challenge. To reduce the handover delay in the MBS, the IEEE 802.16e standard introduces an MBS zone, which is a group of base stations that are broadcasting the same multicast packets. However, this raises the MBS traffic load on Mobile WiMAX networks, particularly the wireless part. This paper presents an MBS architecture that is based on location-management areas (LMAs), which can increase the sizes of MBS zones to reduce the average handover delay without too much bandwidth waste. An analytical model is developed to quantify service-disruption time, bandwidth usage, and blocking probability for different sizes of MBS zones and LMAs while considering user mobility, user distribution, and MBS session popularity. Using this model, we also propose how to determine the best sizes of MBS zones and LMAs, along with performance guarantees. Analytical and simulation results demonstrate that our LMA-based MBS scheme can achieve a bandwidth-efficient multicast delivery while retaining an acceptable service-disruption time.

Original languageEnglish
Article number5658173
Pages (from-to)605-617
Number of pages13
JournalIEEE Transactions on Vehicular Technology
Volume60
Issue number2
DOIs
Publication statusPublished - 2011 Feb

Keywords

  • Broadband wireless
  • Worldwide Interoperability for Microwave Access (WiMAX)
  • broadcast
  • multicast
  • multicast/broadcast service (MBS)
  • multimedia streaming

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics

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