Patent ID: 6393279
Filing Date: 2002-05-21
Classification: H04W

Abstract:
A cell selecting method for a mobile station in a multiband system using a plurality of frequency bands, the system having independent cell networks for the respective frequency bands and a memory for storing the number of neighbor cells having a frequency band being different from a frequency band of a service cell and a minimum received signal strength indicator (RSSI) for cell selecting, the method comprising the steps of:(a) detecting RSSIs of the service cell and the neighbor cells and storing the detected RSSIs; (b) determining whether the detected RSSIs satisfy a handoff condition; (c) determining whether a frequency band of the service cell is equal to a frequency band of the neighbor cells, when the handoff condition is satisfied; (d) counting, when the frequency band of the service cell is not equal to the frequency band of the neighbor cells, the number of the neighbor cells having the frequency band being different from the frequency band of the service cell, storing the counted number, comparing the counted number of the neighbor cells with a previously stored number of the neighbor cells, to determine whether the number of the neighbor cells has increased, and based on the comparison result, determining whether a camping-on condition is satisfied; and (e) camping on the neighbor cell having the different frequency band when the camping-on condition is satisfied, and camping on the present service cell when the camping-on condition is not satisfied.