A Fuzzy Distance-Based Location Management Scheme for PCS Networks

TitleA Fuzzy Distance-Based Location Management Scheme for PCS Networks
Publication TypeConference Paper
Year of Publication2006
AuthorsZhu, Y. -hua, and V. C. M. Leung
Conference NameVehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd
Pagination1063 -1067
Date Publishedmay.
Keywordsdistance threshold, dynamic location management schemes, fuzzy control, fuzzy distance-based location management scheme, fuzzy logic controller, location update, mobile terminal, mobile terminal mobility, mobility management (mobile radio), near-optimal cost performance, paging cost, PCS networks, personal communication networks, telecommunication control, telecommunication traffic, total signaling cost, traffic patterns

It is well-known that, among dynamic location management schemes, the lowest total signaling cost is achieved by the distance-based scheme, which invokes a location update when the moving distance of a mobile terminal measured in number of cells exceeds a predefined distance threshold. The cost performance of the distance-based scheme is highly dependent on the distance threshold, as the paging cost increases and location update cost decreases with the distance threshold. Hence, how to choose a suitable distance threshold is critical for a distance-based scheme to be effectively and efficiently applied. In this paper, a fuzzy distance-based location management scheme (FDLMS) is proposed, which employs a fuzzy logic controller to dynamically adjust the distance threshold for each mobile terminal so that optimal or near-optimal cost performance can be obtained regardless of the mobile terminals' changing mobility and traffic patterns. Simulation results are presented to compare the cost of FDLMS with that of distance-based schemes with different fixed distance thresholds


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