METHOD TO GAIN ACCESS TO A BASE STATION IN A DISCRETE MULTITONE SPREAD SPECTRUM COMMUNICATIONS SYSTEM

摘要

In a discrete multitone spread spectrum system, a base station distinguishes between normal collisions and noise bursts when receiving access request signals for remote units on a common access channel. The base station is the n able to reply to the remote units with information about the quality of the common access channel and why their transmissions where not successful. The remote units then use this information to adapt their retry processes to the channel's quality, depending on whether there was a noise burst, a normal collision, or a successful transmission on the channel.