Patent ID: 6606499
Filing Date: 2003-08-12
Classification: H04W

Abstract:
A method of dynamically allocating channels in a cellular radio network, wherein a set of physical channels is used in said network to form logical channels dedicated to communications in circuit mode between mobile stations and geographically distributed base stations, each logical channel belonging to a physical channel, and wherein, for each communication established on a logical channel between a base station and a mobile station, radio parameters representative of conditions of said communication on said logical channel are periodically measured, the method comprising the following steps, carried out for each base station:associating a respective priority index to each physical channel of said set; holding a first list of physical channels which are not being used by said base station to communicate with any mobile station, and at least a second list of busy physical channels, each having at least one active logical channel dedicated to a communication currently taking place between said base station and any mobile station; updating the priority indices associated with the physical channels of the second list on the basis of the radio parameters measured in relation to communications taking place on the logical channels belonging to said physical channels of the second list; and when establishing a communication with a mobile station, selecting for said communication an accessible and non-active logical channel belonging to a physical channel whose priority index is maximum.