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Dynamic Handoff Priority Adjustment Based on Mobility-Awareness in Multimedia Cellular Networks

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DOI: 10.4236/ijcns.2011.48061    3,845 Downloads   7,474 Views   Citations

ABSTRACT

In multimedia cellular networks, when a Mobile Host requests multimedia services, it may experience hand-offs to several cells before the request is completely served. If a target cell cannot provide adequate bandwidth for a service request, instead of directly dropping the request, the MH is put into the handoff queue and hopefully the requested bandwidth can be satisfied by later released bandwidth. Obviously, it is important to properly assign priorities for queued handoff of MHs based on their inborn dynamics to avoid unnecessary dropping. In this paper, we present a dynamic handoff priority adjustment scheme which applied a handoff queuing scheme to dynamically adjust handoff priority based on receiving signal strength, service class, and mobility of Mobile Hosts. In addition, idle bandwidth reserved by inactive MHs is reallocated to urgent handoff MHs to reduce the call dropping probability. The goal of the proposed dynamic handoff priority adjustment scheme is to further reduce call dropping probability while still maintaining high bandwidth utilization and acceptable call blocking probability on multimedia cellular networks.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

C. Lin and P. Huang, "Dynamic Handoff Priority Adjustment Based on Mobility-Awareness in Multimedia Cellular Networks," International Journal of Communications, Network and System Sciences, Vol. 4 No. 8, 2011, pp. 495-506. doi: 10.4236/ijcns.2011.48061.

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