The channel segregation, a self-organized dynamic channel allocation method: application to TDMA/FDMA microcellular system

摘要

Spectrum efficiency for a TDMA/FDMA microcellular system, where the base station does not load with full system channels as is seen in a conventional cellular system, can be heavily deteriorated if a coordinated use of the channels is not adopted: the random use of the channels on the same frequency between neighboring cells is most harmful. The authors show that the channel segregation (SEG) which has been proposed as a sophisticated dynamic channel assignment (DCA) method, has a capability to resolve this problem. Results of the analysis with computer simulation reveal that the SEG gives a higher spectrum efficiency compared with the conventional DCA, when applied to a TDMA/FDMA microcellular system. No significant modification to the SEG algorithm is required except that the channel usage is restricted depending on the channel usage situation due to the partial loading of the channels.