Method to gain access to a base station in a discrete multitone

Details Method to gain access to a base station in a discrete multitone Method to gain access to a base station in a discrete multitone

1997-02-24

1999-12-14

Hsu, Alpus H.

Multiplex communications

Generalized orthogonal or special mathematical techniques

Quadrature carriers

370210, 370320, 370335, 375200, 375206, 375350, H04J 1302, H04B 7216

Patent

active

060026642

ABSTRACT:
In a discrete multitone spread spectrum system, a base station distinguishes between normal collisions and noise bursts when receiving access request signals from remote units on a common access channel. The base station is then able to reply to the remote units with information about the quality of the common access channel and why their transmissions were 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.

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