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Optimizing handover call blocking probability in cellular networks with high speed moving terminals

By K. Ioannou, S. Louvros, I. Panoutsopoulos, S. Kotsopoulos and G. K. Karagiannidis


Abstract—This letter presents a two-layer cellular architecture which optimizes the handoff blocking probability performance of high-speed moving terminals (HSMT) in a congested urban area. The lower layer of the proposed architecture is based on a microcellular solution, for absorbing the traffic loads of both the low-speed moving terminals (LSMT) and the new calls of HSMT. The higher layer is based on a macrocell umbrella solution, for absorbing the traffic load of the existed handoff calls of the HSMT. The results show that using the optimum number of channels in each layer, the handoff call blocking probability of the HSMT is optimized having the minimum effect on the call blocking probability of the microcellular layer. Index Terms—Call blocking probability, handoff, high and low speed moving terminals, multilayer architecture. I

Year: 2002
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