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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 資訊工程學系 > 期刊論文 >  Resolving Mobile Database Overflow with Most-Idle Replacement


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/12898


    Title: Resolving Mobile Database Overflow with Most-Idle Replacement
    Authors: Hui-Nien Hung
    Yi Bing Lin
    Nan-Fu Peng
    Shun-Ren Yang
    Date: 2001
    Publisher: Institute of Electrical and Electronics Engineers Inc
    Keywords: database management systems
    personal communication networks
    telecommunication computing
    telecommunication network management
    Abstract: In a personal communications service (PCS) network, mobility databases called visitor location registers (VLRs) are utilized to temporarily store the subscription data and the location information for the roaming users. Because of user mobility, it is possible that the VLR is full when a mobile user arrives. Under such a circumstance, the incoming user has no VLR record and thus cannot receive PCS services. This issue is called VLR overflow. To resolve the VLR overflow problem, a VLR record can be selected for replacement when the VLR is full and then the reclaimed storage is used to hold the record of the requesting user. This paper considers the most idle replacement policy to provide services to mobile users without VLR records. In this policy, the record with the longest idle time is selected for replacement. We propose an analytic model to investigate the performance of this replacement policy. The analytic results are validated against simulation experiments. The results indicate that our approach effectively resolves the VLR overflow problem
    Relation Link: http://ieeexplore.ieee.org/Xplore/dynhome.jsp
    URI: http://nthur.lib.nthu.edu.tw/handle/987654321/12898
    Appears in Collections:[資訊工程學系] 期刊論文
    [積體電路設計技術研發中心] 期刊論文

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