Mobile Cellular Telecommunications: Analog and Digital Systems
Mobile Cellular Telecommunications: Analog and Digital Systems
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In a cellular telecommunications network, a mobile telephone switching office (MTSO) co-ordinates the activities of the mobile units either directly or via intermediate base transceivers or hubs. In order to increase reliability, cells often split their traffic via multiple hubs--this ensures partial survivability in the face of equipment failures. One version of this problem was presented in Dutta and Kubat [4] where it was solved heuristically. In this paper, we show how this problem can be reduced to a significantly smaller one--one which can be solved to optimality almost instantaneously even for instances much larger than those presented in Dutta and Kubat [4]. Results from extensive computational tests are presented on various channel capacities, ranging from DS-1 to OC-192. The optimal approach is observed to provide better solutions in less time than the heuristic approach, thereby rendering the use of heuristic approaches unnecessary.