Patent ID: 6940839
Filing Date: 2005-09-06
Classification: H04W

Abstract:
1. A method of controlling the transmit power of a plurality of CDMA downlink channels from a base station to a plurality of mobile stations within a control range between a nominal lower limit and a nominal upper limit, said method comprising: receiving at the base station a request from one of the mobile stations to decrease the transmit power of a downlink channel from the base station to the one of the mobile stations; determining whether a hypothetically decremented value of the transmit power is higher or lower than the nominal lower limit; when the hypothetically decremented value is equal to or higher than the nominal lower limit, decreasing the transmit power when the hypothetically decremented value is lower than the nominal lower limit, decreasing the transmit power if the downlink channel has a quality equal to or higher than a specified value; and when the hypothetically decremented value is lower than the nominal lower limit, setting the transmit power to the nominal lower limit if the downlink channel has a quality lower than the specified value.