Patent ID: 6453165
Filing Date: 2002-09-17
Classification: H04W,Y02D

Abstract:
A method of distributing channels between base stations and a multi-base section radio system by analogy with a mathematical model wherein said analogy determines a channel distribution which has an acceptable level of inter-channel interference wherein said mathematical model is based on a heat bath having a plurality of particles immersed therein, said method comprising the steps of:assigning each base station of the radio system as a corresponding one particle of said plurality of particles of said mathematical model wherein each of said radio stations corresponds to a discrete state of each of said particles; assigning selected channels so they are represented by different states of a particles so that changes in said distribution of channels are represented respectively by changes in the states of said particles; representing interference between base station channels by an interaction between said states of different particles of said plurality of particles; representing a change in an interference range coverage area ratio (C/I) by a change in energy of said mathematical model of said heat bath; representing the total number of base stations and channels in said radio systems by the number of particles and states in said mathematical model wherein said number of particles and states correspond to those number of particles and states necessary to meet a predetermined traffic demand with a maximum acceptable level of interference between channels; wherein a first condition of said radio system is specified by the number of said plurality of particles and interaction between said number of particles and said heat bath and further wherein one of a redistribution of said radio channels and a change in number of channels is represented in said mathematical model by a change in said states and said interactions of said particles; setting an initial temperature for said heat bath of said mathematical model and reducing said temperature in a series of steps so that the states of the particles change in accordance with a stochastic process in order to establish channel allocation; and changing energy of said heat bath in order to achieve an energy content which corresponds to an acceptable interaction between said plurality of particles and an acceptable level of interference between said base stations.