Abstract
This paper suggests an improved probabilistic location update (IPLU) scheme for advanced cellular mobile networks. The location management cost with IPLU is analyzed, and various performance characteristics of IPLU are investigated. It is shown that IPLU has the parameter q that can be used as a control parameter to achieve the best performance when the unit location update cost (U) and the unit paging cost (P) are given. In addition, this paper provides some recommendable values of q in two cases, P>U and P/spl les/U. As a result, we demonstrate a merit of IPLU, that is, simple implementation with an acceptable performance level, especially, under the future cellular mobile network environments where a vast number of microcells/picocells exist and the relative user mobility is very high.
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