Patent ID: 6606497
Filing Date: 2003-08-12
Classification: H04B,H04W

Abstract:
A base station which supports a wireless channel for a mobile station together with one or more other base stations in a soft handoff mode, the base station transmitting and receiving, with the mobile station, radio frames having a predetermined length, comprising:a transmitter which transmits a downlink signal to the mobile station, the mobile station being capable of receiving the downlink signal and downlink signals from the other base stations in the soft handoff mode; a receiver that receives an uplink signal from the mobile station; and a controller that identifies if the base station is a selected base station upon the base station receiving, from the mobile station, an uplink signal indicating the selected base station for subsequent communication with the mobile station from which the downlink signal shows a preferred signal quality; wherein when said base station is the selected base station, said base station transmits the next downlink signal, otherwise said base station maintains the soft handoff mode with the mobile station without sending the next downlink signal.