Patent ID: 6301286
Filing Date: 2001-10-09
Classification: H04B,H04J,H04L,H04W

Abstract:
A code-division-multiple-access (CDMA) wireless base station, comprising:a CDMA transmitter;a CDMA receiver; anda controller coupled to the CDMA receiver for responding to signals received via the CDMA receiver and coupled for controlling the CDMA transmitter, such that in operation the CDMA base station is for performing the following steps:receiving from a remote station an access burst comprising a sequence of coded preamble signals at sequentially increasing discrete power levels;detecting a first one of the coded preamble signals of the sequence that is received at an adequate power level;upon detection of the first coded preamble signal at the adequate power level, transmitting an acknowledgement signal;receiving from the remote station a remote station collision detection preamble;transmitting to the remote station a base station collision detection preamble corresponding to the received remote station collision detection preamble; andsubsequently, receiving any of data and control information over the common packet channel from the remote station, or transmitting any of data and control information to the remote station.