Mobile communication system and its radio channel distribution scheme

Abstract

A mobile communication system using an autonomous distributed type dynamic channel allocation scheme, in which each base station manages allocation priority levels for the available radio channels according to past records of channel use for each radio channel, and updates the allocation priority level of each radio channel by weighting past allocation accept/reject judgement results for each radio channel with weight factors which vary according to time intervals of the past allocation accept/reject judgement results from a current time. The mobile stations can be grouped into N groups according to states of the mobile stations and allocation priority levels for each radio channel in correspondence to these N groups can be managed at each base station. The thresholds for grouping the mobile stations can be determined according to past records of states of the mobile stations.

Description

[0001] This application is a divisional application of the patent application No. 95101476.5. technical field [0002] The present invention relates to a mobile communication system composed of base stations and mobile stations, and more particularly, to a channel allocation scheme employed by each base station when establishing communication with a mobile station. Background technique [0003] A known mobile communication system currently in practical use as a pocket telephone system or an automatic telephone system is a cellular system in which communication services are provided by distributing a certain number of base stations in its service area, and each base station Serves a radius area of ​​the order of a few kilometers. [0004] Generally, in order to effectively utilize limited available radio channel resources, such mobile communication systems adopt geographical reuse of radio channels, wherein the same radio channel is used by more than one geographically distan...

AI Technical Summary

Problems solved by technology

[0019] However, such a thorough analysis of all the numerous radio areas existing in the service area of ​​the system requires a lot of time and effort, and there is also a problem that a redesign is required at the time of system expansion such as adding base stations

In addition, in addition to system expansion, new construction and destruction of buildings, roads, etc. around each base station will have a great impact on the radio wave propagation state and traffic distribution, so redesign is necessary to cope with such changes

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