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مجله برنامه های کاربردی شبکه و کامپیوتر
جزئیات رویداد
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  • congestion prevention in broadband wireless access systems: an economic approach

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 956
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    • شماره تماس دبیرخانه رویداد: -
     while the demand for mobile broadband wireless services continues to increase, radio resources remain scarce. even with the substantial increase in the supported bandwidth in the next generation broadband wireless access systems (bwass), it is expected that these systems will severely suffer from congestion, due to the rapid increase in demand of bandwidth-intensive multimedia services. without efficient bandwidth management and congestion control schemes, network operators may not be able to meet the increasing demand of users for multimedia services, and hence they may suffer an immense revenue loss. in this paper, we propose an admission-level bandwidth management scheme consisting of call admission control (cac) and dynamic pricing. the main aim of our proposed scheme is to provide monetary incentives to users to use the wireless resources efficiently and rationally, hence, allowing efficient bandwidth management at the admission level. by dynamically determining the prices of units of bandwidth, the proposed scheme can guarantee that the number of connection requests to the system are less than or equal to certain optimal values computed dynamically, hence, ensuring a congestion-free system. the proposed scheme is general and can accommodate different objective functions for the admission control as well as different pricing functions. comprehensive simulation results with accurate and inaccurate demand modeling are provided to show the effectiveness and strengths of our proposed approach.

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