Patent ID: 6493332
Filing Date: 2002-12-10
Classification: H04W

Abstract:
A frequency sharing method in an IS-95/W-CDMA scheme in which a plurality of IS-95 base station apparatuses including first base station apparatuses and W-CDMA base station apparatuses including second base station apparatuses are arranged in a same service area, and an IS-95 scheme and a W-CDMA scheme share same frequency bands, comprising the steps of:arranging said plurality of IS-95 base station apparatuses and said plurality of W-CDMA base station apparatuses in a one-to-one correspondence; obtaining a first base station transmission power value of one of said first base station apparatuses in each frequency band in the IS-95 scheme; obtaining second base station transmission power values of ones of said second base station apparatuses adjacent to said one first base station apparatus; determining whether there is a frequency band in the IS-95 scheme in which a sum of the first and second base station transmission power values is not less than a predetermined threshold; and when there is a frequency band in the IS-95 scheme in which the sum is not less than the predetermined threshold, performing frequency handoff to switch a communication channel in the IS-95 scheme which is using the frequency band in which the sum is not less than the predetermined threshold to another frequency band in the IS-95 scheme.