Patent ID: 6587526
Filing Date: 2003-07-01
Classification: H04L

Abstract:
Apparatus for use in a wireless communications system for generating a timing control signal comprising:a receiver for receiving a signal including a plurality of tones from at least one mobile station; a first prescribed processor supplied with Wd received tones for generating a corresponding plurality of complex scalars of the mobile user transmission channel; and an estimate processor supplied with said plurality of complex scalars for generating a single prescribed parameter representative of delay characteristics of said mobile user transmission channel and for utilizing said single prescribed parameter representative of delay characteristics in accordance with prescribed criteria to generate said timing control signal, wherein said timing control signal is to be transmitted to said mobile unit where it ensures proper positioning of a transmitted mobile signal in the optimum sampling window at a base station by being responsive to said timing control signal to controllably delay or advance a transmit symbol clock in said mobile unit.