A Distributed Fault-tolerant Resource Planning Scheme for Wireless Networks

Authors:
Chyi-Ren Dow;Jong-Shin Chen
Affiliations:
Department of Information Engineering and Computer Science, Feng Chia University, Taichung, Taiwan E-mail: crdow@fcu.edu.tw;Department of Information Engineering and Computer Science, Feng Chia University, Taichung, Taiwan E-mail: jschen@pluto.iecs.fcu.edu.tw
Venue:
Wireless Personal Communications: An International Journal
Year:
2003

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Abstract

Efficient management of wireless channels is critical for the performance of cellular systems. Resource planning represents the allocations of system channels into cells. Accordingly, channel assignment strategies respond for using the allocated channels of cells to provide communication services in cells. However, a cellular system that experiences the varying of traffic distributions and the mobile service stations (MSSs) failing to provide communication services or recovered from failures will lessen the utilization of channels to provide communication services. In this paper, we present a distributed fault-tolerant resource planning scheme that can adaptively allocate channels to cells according to above variations in cellular systems. When the MSS of a cell fails to provide communications, its allocated channels can be reallocated to other non-failed MSSs. Our scheme has the advantages of low message overhead and low time delay. Moreover, freedom from deadlock is ensured. Simulation results, which are observed from reducing the overall average call blocking probability and the message overhead with and without applying our resource planning scheme to various channel assignment strategies, demonstrate that our algorithm is very efficient.