Patent ID: 6859445
Filing Date: 2005-02-22
Classification: H04B,H04J,H04W

Abstract:
1. An uplink channel assignment method for user equipment (UE) in a CDMA (Code Division Multiple Access) communication system, comprising the steps of: transmitting an access preamble signal having channel information, said channel information being used to access a base station; receiving an access preamble acquisition indicator signal from the base station in response to the access preamble signal; transmitting a collision detection preamble for the reconfirmation of the right of using an uplink channel in response to the received access preamble acquisition indicator signal; receiving a first signal indicating acquisition of the collision detection preamble and a second signal indicating channel assignment, in response to the collision detection preamble; and upon receipt of the first and second signal, transmitting uplink channel data through an uplink channel assigned by the second signal.