Channel Segregation, a Distributed Adaptive Channel Allocation Scheme for Mobile Communication Systems

Yukitsuna FURUYA  Yoshihiko AKAIWA  

IEICE TRANSACTIONS on Communications   Vol.E74-B   No.6   pp.1531-1537
Publication Date: 1991/06/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Issue on Mobile Communications)

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A new channel allocation algorithm named "Channel Segregation" is proposed for small cell mobile radio systems. The proposed scheme in principle requires no effort in the cell design and is highly adaptive to the change of propagation conditions. Channel allocation is determined in each base station in a distributed manner, without measuring propagation conditions in advance. By learning from statistical data of carrier sense results, each base station makes its favorite channel independently so that unnecessary interferences will not occur. As a result, each base station captures its favorite channels for dedicated use. Simulation results show that channel segregation actually takes place by a distributed control. Performances are measured in two criteria, interference probability due to carrier sense error and total blocking probability. Compared with a system without segregation, the proposed sheme decreases interference probability by 1/10-1/100, and increase channel utilization efficiency by 28% for a 2-dimensional interference model.