Optimized Handover Schemes over WiMAX

  • Zina Jerjees
  • H. S. Al-Raweshidy
  • Zaineb Al-Banna
Part of the IFIP Advances in Information and Communication Technology book series (IFIPAICT, volume 308)


Voice Over Internet Protocol (VoIP) applications have received significant interests from the Mobile WiMAX standard in terms of capabilities and means of delivery multimedia services, by providing high bandwidth over long-range transmission. However, one of the main problems of IEEE 802.16 is that it covers multi BS with too many profiled layers, which can lead to potential interoperability problems. The multi BS mode requires multiple BSs to be scanned synchronously before initiating the transmission of broadcast data. In this paper, we first identify the key issues for VoIP over WiMAX. Then we present a MAC Layer solution to guarantee the demanded bandwidth and supporting a higher possible throughput between two WiMAX end points during the handover. Moreover, we propose a PHY and MAC layers scheme to maintain the required communication channel quality for VoIP during handover. Results show that our proposed schemes can significantly improve the network throughput up to 55%, reducing the data dropped to 70% while satisfying VoIP quality requirements.


WiMAX handover cross-layer 


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Copyright information

© IFIP International Federation for Information Processing 2009

Authors and Affiliations

  • Zina Jerjees
    • 1
  • H. S. Al-Raweshidy
    • 1
  • Zaineb Al-Banna
    • 1
  1. 1.Wireless Networks and Communications Centre (WNCC)Brunel UniversityLondonUK

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