Radio resource management technique for multilayered cell system with different bandwidths

An intelligent radio resource management technique is proposed for multi-layered cellular systems to achieve flexible and high capacity wireless communication systems. In the proposed system, terminals with lower mobility are connected to the wideband microcell systems to support a variety of services, including high bit rate data transmission; terminals with higher mobility are connected to the narrowband macrocell systems to reduce intercell hand-off frequency. To flexibly cope with temporal and spatial variations of the ratio of the microcell and macrocell terminals, system bandwidths for microcell and macrocell systems are adaptively changed to minimise the sum of the call blocking rate of both systems. Computer simulations confirm that the proposed system can improve the blocking probability under any traffic condition