Patent ID: RE39980

Claim:
A method for transmitting control information and user traffic signals from a first base station to a plurality of mobile stations in a code division multiple access communication system comprising the steps of: coding control information using a spread spectrum code unique to control information to form a calling channel signal; coding each user traffic signal using a spread spectrum code unique to each traffic signal; adding said calling channel signal and said coded traffic signal using predetermined weighting factors to obtain a composite signal; modulating said composite signal on a radio frequency carder to form a radio frequency signal; transmitting said radio frequency signal to said plurality of said mobile stations; receiving said radio frequency signal at at least one of said mobile stations; decoding said received signal in said mobile station to extract said control information wherein said control information is used by said mobile station to determine if said mobile station is being called and to determine a phase of the calling channel signal; and decoding said radio frequency signal in said mobile station using said phase of the calling channel signal to extract traffic information intended for said mobile station.