Ordered dynamic channel assignment scheme with reassignment in highway microcells

The authors propose an ordered dynamic channel assignment with reassignment (ODCAR) scheme and study its performance in a highway microcellular radio environment where the microcells are shaped to segments of the highway. Channels are assigned on an ordered basis in conjunction with a minimax algorithm to provide high capacity and to alleviate worst case channel congestion in each microcell. Simulation results show significant performance improvements in terms of channel utilization and probability of call failure. The load sharing feature of this improved scheme is demonstrated in a highway microcellular radio network with an asymmetrical teletraffic load condition. The authors examine how load sharing is accomplished under such circumstances