Performance of distributed control channel allocation (DCCA) under non-uniform traffic condition in microcellular radio communications

摘要

A new technique of autonomous allocation of radio resources in microcellular PCN is described. The technique uses distributed control based on carrier-to-cochannel interference-ratio measurements by the main base station located in the centre of each cell. There are six low power sub-stations surrounding the main base station, which are used to effectively change the location of the base station within the cell. The system algorithm automatically adapts to the time-variant call traffic. It is shown by computer simulation that this adaptive system significantly improves the capacity of the network, in comparison to the conventional fixed channel assignment scheme, both under uniform call traffic and in the more realistic case of nonuniform traffic distribution condition.