Patent ID: 6725062
Filing Date: 2004-04-20
Classification: H04B,H04J

Abstract:
A method for sharing Walsh codes between at least two mobile stations operating simultaneously in a Control Hold Medium Access Control (MAC) state in Code Division Multiple Access (CDMA), comprising for each respective mobile station, upon entry of the respective mobile station into the Control Hold MAC state, the following steps performed by a base station serving the respective mobile station:a) determining a gating rate 1/Ã— to be used by the respective mobile station, wherein Ã— is greater than one; b) identifying a Walsh code being used by less than Ã— mobile stations in the control hold MAC state, and allocating the identified Walsh code to the respective mobile station to thereby define a channel of communication for the respective mobile station; c) identifying a time slot which is not being used by the base station to transmit to any mobile stations using the identified Walsh code in the control hold MAC state, and allocating the identified time slot for transmission of at least one signal to the respective mobile station; and d) transmitting at least one signal between the base station and the respective mobile station using the identified Walsh code during the identified time slot.