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Multi-States Based Hybrid Location Update Strategy in Wireless Communication System  

Lee, Goo-Yeon (Dept. of Computer Eng. Kangwon National University)
Lee, Yong (Samsung Electronics, TN R&D Center)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.44, no.1, 2007 , pp. 113-122 More about this Journal
Abstract
In this paper, we propose a multi-state based hybrid location update scheme, which integrates the time-based and the movement-based methods. In the proposed scheme, a mobile terminal updates its location after n cell boundary crossing and a time interval of T[sec]. We derive an analytical solution for the performance of the hybrid scheme with exponential cell resident time and evaluate it numerically with time-varying random walk mobility model, which we model as multi-states Markov chain. Furthermore, we also evaluate the scheme for arbitrary cell resident times by simulation. From the numerical analysis and the simulation results, we prove that the proposed scheme significantly outperforms the time-based and the movement-based methods, when implemented alone, more accurately adapting to the time-varying user mobility.
Keywords
hybrid-location update;
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