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An Adaptive Follow-Me Replication Scheme for Service Profile Management in Virtual Home Environment  

황진경 (KT 서비스개발연구소)
권순종 (KT 기술본부)
박명순 (고려대학교 컴퓨터학과)
Publication Information
Journal of KIISE:Information Networking / v.30, no.4, 2003 , pp. 545-558 More about this Journal
Abstract
It is expected that per-user customized services are widely used in next generation Personal Communication Network. The ultimate goal for personalized service is the Virtual home Environment (VHE) providing ´same-look-and-feel´ services for the subscriber wherever he roams to. To provide personalized services for each call, per-user service profiles are frequently referenced, so efficient service profile management is essentially required. To realized the VHE, typically two schemes, can be employed; One is Intelligent Network based service control and the other is a full replication scheme that always replicates profile in user´s current zone. The first scheme is referred as Central scheme and th second scheme is the modified replication scheme of IMT-2000, we refer to as Follow-Me Replication Unconditional (FMRU). Since the Central scheme only depends on the service cal rate and the FMRU is merely dependent on the movement rate, it is apparent that FMRU scheme outperforms the Central scheme if the call to mobility ratio (CMR) is large, and vice versa. In this paper, we propose a new service profile replication schemes, Adaptive Follow-Me Replication (AFMR) that determine replication automatically according to the user´s CMR. We compared the performance of the AFMR with the non-adaptive Follow-Me Replication unconditional on Demand (FMRUD) scheme. Performance results indicate that as the CMR of a user changes AFMR adapts well compared to the existing schemes.
Keywords
Virtual Home Environment; Service profile; Intelligent Network; Profile replication; On-demand replication; Adaptive replication algorithm;
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