Patent ID: 6452913
Filing Date: 2002-09-17
Classification: H04B,H04J,H04L,H04Q,H04W

Abstract:
A method for communication of data between a base station and multiple subscriber units over one or more CDMA communication channels, the method comprising:providing a plurality of subchannels within each of at least one CDMA channel; assigning subchannels for communication between the base station and subscriber units on an as-needed basis; and maintaining a synchronizing idle mode connection between at least one subscriber unit and the base station, wherein the step of maintaining an idle mode connection further comprises: analyzing a signal received form a subscriber unit at the base station and detecting whether a corresponding message from a subscriber unit is early or late; and in response thereto, transmitting a timing alignment correction message on a predetermined channel to the corresponding subscriber unit in the idle mode to achieve synchronization with the base station.