Abstract
Mobility tracking operations in Personal Communication Services Networks (PCS) are signal-consuming. Several strategies have been proposed in the literature to reduce both the location update (LU) and the paging (PG) costs. In this paper, we use a Three Location Area (TrLA) Location Tracking Algorithm. In the TrLA, the Mobile Terminal (MT) is located in three Location Areas (LAs) with a common perimeter between them. They form the Big Location Area (BLA). Each time the MT exits the BLA, and thus enters a new LA, it triggers an LU message towards the Fixed Network (FN) and updates its caché memory. In this article, we evaluate the impact of the TrLA Location Tracking Algorithm in the FN and provide the Registration (RG) and Interrogation (IG) costs in order to estimate the load per MT in the FN devices. These devices are the Home Location Register (HLR) and the Visitor Location Registers (VLRs), and they form the System DataBase (SDB). Our study is based on an analytical model of a semi-Markov process.
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Escalle, P.G., Giner, V.C. Evaluating Registration and Interrogation Costs in a PCS Network. Wireless Personal Communications 18, 227–245 (2001). https://doi.org/10.1023/A:1017586212245
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DOI: https://doi.org/10.1023/A:1017586212245