Patent ID: 7430234

Claim:
A wireless transmit receive unit (WTRU) for use in a wireless communication system comprising: a receiver configured to receive sequential time frame of wireless signals of spread communication data for selected channels in formats selected from among a set of predefined formats wherein communication data for each time frame is received in a format-defined number of physical channels in which the data for each physical channel has been spread using a respective format-defined spreading code and a respective format-defined spreading factor and where at least two different spreading codes are defined for use within the set of predefined formats; a memory; a received chip rate processor (RCRP) configured to despread each wireless signal of spread data received in each time frame using a key sequence which is usable to despread the spreading codes defined for all of the physical channels of all formats of the set of predefined formats and configured to store resultant despread data for each respective time frame in the memory; and a format detector configured to determine the number of physical channels and the respective spreading factor for each physical channel for the wireless signal of the spread data received in each time frame based upon processing the received signal for each respective time frame.