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Analysis of the direction-based location update schemes for wireless cellular networks

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3 Author(s)
Hang-Wen Hwang ; Dept. of Comput. Sci. & Inf. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan ; Chien-Chao Tseng ; Ming-Feng Chang

We first compare the performance of the direction-based location update (DBLU) schemes with that of the distance-based location update scheme under various mobility behaviors of the mobile hosts (MTs). The comparison results show that under the random walk model, the base DBLU scheme outperforms the distance-based location update scheme when the mobility to call ratios (MCRs) of the MTs are low. However, it has been shown that the MTs are likely to possess forward-prone movement characteristics in microcellular architectures. If the MTs are indeed prone to make forward movements, the base DBLU scheme will be better than the distance-based location update scheme in all the MCRs according to our analysis. Therefore we further propose two enhanced DBLU schemes, namely the forward direction-based location update (FDBLU) and the restricted forward direction-based location update (RFDBLU) schemes, for the location tracking of the MTs in micro-cellular architectures. Analytical results also show that both FDBLU and RFDBLU schemes outperform the base DBLU scheme, and RFDBLU scheme is the best among the direction-based location update schemes.

Published in:

Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE  (Volume:2 )

Date of Conference:

17-21 Nov. 2002