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The study of handoff prediction schemes for resource reservation in mobile multimedia wireless networks

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3 Author(s)
Li-Liann Lu ; Dept. of Electron. Eng., Kuang Wu Inst. of Technol., Taipei, Taiwan ; J. -L. C. Wu ; Wei-Yeh Chen

In this paper, the mobility-dependent predictive resource reservation (MDPRR) scheme is proposed to provide flexible usage of limited resource in mobile multimedia wireless networks. An admission control scheme is also considered to further guarantee the QoS of real-time traffic. The area of a cell is divided into non-handoff, pre-handoff, and handoff zones so that bandwidth is reserved in the target/sub-target cell as mobile stations move into the pre-handoff zone and leave the serving base station. The amount of bandwidth to be reserved is dynamically adjusted according to the location, the instantaneous variation of velocity and direction of mobile stations. Two scenarios of the MDPRR scheme are compared by considering the velocity threshold in the calculation of the weight of direction. The results show that employing the velocity threshold in the MDPRR scheme can indeed reduce connection dropping probability, and make better usage of the reserved bandwidth.

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Advanced Information Networking and Applications, 2004. AINA 2004. 18th International Conference on  (Volume:1 )

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