Transition-aware DVS algorithm for real-time systems using tree structure analysis
Journal of Systems Architecture: the EUROMICRO Journal
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In this paper, the mobility-dependent predictiveresource reservation (MDPRR) scheme is proposed toprovide flexible usage of limited resource in mobilemultimedia wireless networks. An admission controlscheme is also considered to further guarantee the QoS ofreal-time traffic. The area of a cell is divided into non-handoff,pre-handoff, and handoff zones so thatbandwidth is reserved in the target/sub-target cell asmobile stations move into the pre-handoff zone and leavethe serving base station. The amount of bandwidth to bereserved is dynamically adjusted according to thelocation, the instantaneous variation of velocity anddirection of mobile stations. Two scenarios of theMDPRR scheme are compared by considering thevelocity threshold in the calculation of the weight ofdirection. The results show that employing the velocitythreshold in the MDPRR scheme can indeed reduceconnection dropping probability, and make better usageof the reserved bandwidth.