DocumentCode :
1541587
Title :
Resolving mobile database overflow with most idle replacement
Author :
Hung, Hui-Nien ; Lin, Yi-Bing ; Peng, Nan-Fu ; Yang, Shun-Ren
Author_Institution :
Inst. of Stat., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Volume :
19
Issue :
10
fYear :
2001
fDate :
10/1/2001 12:00:00 AM
Firstpage :
1953
Lastpage :
1961
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
Keywords :
database management systems; personal communication networks; telecommunication computing; telecommunication network management; PCS network; VLR overflow; idle time; incoming user; location information; mobile database overflow; most idle replacement; personal communications service; reclaimed storage; replacement policy; requesting user; roaming users; subscription data; visitor location registers; Analytical models; Computer science; Councils; Databases; Mobile radio mobility management; Performance analysis; Personal communication networks; Roaming; Subscriptions; Wireless communication;
fLanguage :
English
Journal_Title :
Selected Areas in Communications, IEEE Journal on
Publisher :
ieee
ISSN :
0733-8716
Type :
jour
DOI :
10.1109/49.957310
Filename :
957310
Link To Document :
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