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Reducing group management overhead in group-based location management

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3 Author(s)
Gary Hoi Kit Lam ; Dept. of Comput., Hong Kong Polytech. Univ., China ; Leong, H.V. ; Stephen Chi Fai Chan

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.

Published in:

Database and Expert Systems Applications, 2004. Proceedings. 15th International Workshop on

Date of Conference:

30 Aug.-3 Sept. 2004