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Database and Expert Systems Applications, 15th International Workshop on (DEXA'04)
Reducing Group Management Overhead in Group-Based Location Management
Zaragoza, Spain
August 30-September 03
ISBN: 0-7695-2195-9
Gary Hoi Kit Lam, The Hong Kong Polytechnic University
Hong Va Leong, The Hong Kong Polytechnic University
Stephen Chi Fai Chan, The Hong Kong Polytechnic University
Location management is fundamental in supporting location-dependent applications in a mobile environment. It is crucial to reduce the high uplink communication cost in reporting the location of mobile hosts. Group-based location updating scheme is able to exploit the spatial locality of mobile hosts to generate an aggregated location update from a group leader, thereby reducing the number of high cost individual location updates to the server. Under such a scheme, group management becomes an integral component for maintaining hosts' membership. A mechanism is needed for a mobile host to find a suitable group for joining. Those tasks induce more local messages. Based on our preliminary work, host interaction in the group finding process becomes a dominant factor in generating a high local communication overhead. Two improved variants of the group joining procedure are proposed for reducing the overhead. Performance study indicates that both variants do lead to a drastic reduction in local message count and hence the aggregated communication cost.
Citation:
Gary Hoi Kit Lam, Hong Va Leong, Stephen Chi Fai Chan, "Reducing Group Management Overhead in Group-Based Location Management," dexa, pp.640-644, Database and Expert Systems Applications, 15th International Workshop on (DEXA'04), 2004
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