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A direction-based location update scheme with a line-paging strategy for PCS networks

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

On the problem of location update and terminal paging, many schemes using ring-paging strategies have been proposed. However, sequentially paging the rings surrounding the mobile user's last updated location may cause large paging cost. We propose a direction-based location update (DBLU) scheme using a line-paging strategy to reduce the paging cost. A moving direction identification mechanism using only simple computations detects the change of moving direction and updates the mobile's location. The numerical results show that our DBLU scheme achieves good performance when the paging cost is high.

Published in:

IEEE Communications Letters  (Volume:4 ,  Issue: 5 )