Techniques for cellular networks incorporating microcells

A layered radio cell architecture is described for high capacity cellular networks, such as PCN, in which the microcells are used to increase the capacity of the system. Alternative frequency assignment schemes which support this approach are considered. A technique for handling high speed mobiles is proposed. This scheme effectively prevents handover between layers for mobiles moving too fast for the microcells and is being incorporated into phase 2 of the GSM/DCS 1800 European digital cellular/PCN standards.<
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