A cross layer fast handover scheme in VANET
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Unlocking wireless performance with co-operation in co-located base station pools
COMSNETS'10 Proceedings of the 2nd international conference on COMmunication systems and NETworks
Evaluation of scan and association process for real-time communication in mobile WiMAX
IEEE Transactions on Wireless Communications
Fast Uncontrolled Handover scheme for WiMAX: infrastructure networks
International Journal of Autonomous and Adaptive Communications Systems
Fuzzy Logic Based Self-Adaptive Handover Algorithm for Mobile WiMAX
Wireless Personal Communications: An International Journal
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The most challenging research issue of investigating broadband wireless access (BWA) technologies is how to support mobility in WiMAX networks smoothly and seamlessly. It is essential that providing continuous services of multimedia streaming data when a mobile subscriber station (MSS) is across a boundary of a serving area to another one. Although the IEEE 802.16e standard is proposed to tackle this difficult problem, the disruption time (DT) of handover is still too long to overcome the maximum delay time of real-time services. To deal with this problem, this paper proposes a pre-coordination mechanism (PCM) for supporting fast handover in WiMAX networks. This goal is achieved by measuring the distance between the BS and the MSS and predicting the time of handover occurs, and thus pre-allocating available resources for handover usages. Simulation results show that the enhanced DT of handover can achieve approximately to 11 milliseconds. The proposed mechanism is fully compatible with the IEEE 802.16e standard.