Patent ID: 6707805
Filing Date: 2004-03-16
Classification: G06F,H03H,H04B,H04J,H04L,H04N,H04W,Y02D

Abstract:
An improved method for maintaining control of power from a subscriber unit (SU) to a base station (BS), comprising the steps of:(a) sending from the SU to the BS, using spread-spectrum modulation, a SU-spreading code on a status channel; (b) detecting, at the BS, the SU-spreading code from the SU; (c) sending, from the BS to the SU, using spread-spectrum modulation, in response to detecting the SU-spreading code, a BS-spreading code on a checkup channel; (d) detecting, at the SU, the BS-spreading code on the checkup channel; (e) reducing, at the SU, in response to detecting the BS-spreading code, transmit power of the SU; and (f) increasing, at the SU, in response to not detecting the BS-spreading code, transmit power of the SU.