Patent ID: 6967937
Filing Date: 2005-11-22
Classification: H04L,H04W

Abstract:
1. A method for receiving uplink data messages at a base station, without collisions, from a plurality of remote units, the method comprising: assigning, at the base station, a plurality of unique uplink request signals to a plurality of remote units, including a first unique uplink request signal to a first remote unit and a second unique uplink request signal to a second remote unit, wherein the unique uplink request signals are orthogonal signal components of TDMA, FDMA, CDMA, SDMA, or a combination thereof; monitoring the plurality of unique uplink request signals; simultaneously receiving monitored unique uplink request signals, including the first and second unique uplink request signals; in response to receiving the first and second unique uplink request signals, determining that the first and second remote units have data messages to transmit uplink; and authorizing the transmission of uplink data messages from the first and second remote units to the base station.