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Integrated cellular and ad hoc relaying systems: iCAR

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4 Author(s)
Wu, H. ; Dept. of Comput. Sci. & Eng., State Univ. of New York, Buffalo, NY, USA ; Chunming Qiao ; De, S. ; Tonguz, O.

Integrated cellular and ad hoc relaying systems (iCAR) is a new wireless system architecture based on the integration of cellular and modern ad hoc relaying technologies. It addresses the congestion problem due to unbalanced traffic in a cellular system and provides interoperability for heterogeneous networks. The iCAR system can efficiently balance traffic loads between cells by using ad hoc relaying stations (ARS) to relay traffic from one cell to another dynamically. This not only increases the system's capacity cost effectively, but also reduces the transmission power for mobile hosts and extends system coverage. We compare the performance of the iCAR system with conventional cellular systems in terms of the call blocking/dropping probability, throughput, and signaling overhead via analysis and simulation. Our results show that with a limited number of ARSs and some increase in the signaling overhead (as well as hardware complexity), the call blocking/dropping probability in a congested cell and the overall system can be reduced

Published in:

Selected Areas in Communications, IEEE Journal on  (Volume:19 ,  Issue: 10 )

Date of Publication:

Oct 2001

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