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Modeling mis-routing calls due to user mobility in wireless VoIP

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3 Author(s)
Ai-Chun Pang ; Dept. of Comput. Sci. & Inf. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan ; Phone Lin ; Yi-Bing Lin

This letter proposes an analytic model to study the mis-routing problem caused by user mobility in a wireless VoIP system. We derive the probability that there are n mis-routed calls when a subscriber moves from IP network to the GSM network. Our study indicates that if the user residence times in GSM location areas, inter-call origination times and the inter-call delivery times are of the same order, then the mis-routing effect can not be ignored.

Published in:

Communications Letters, IEEE  (Volume:4 ,  Issue: 12 )