Patent ID: 8488579

Claim:
A wireless transmit receive unit (WTRU) for code division multiple access (CDMA) telecommunications comprising: a processor configured to process data in a physical layer and a medium access control (MAC) layer such that the MAC layer communicates data with the physical layer via a plurality of transport channels, where one transport channel is a random access channel (RACH) associated with a set of logical channels including: at least one of a dedicated traffic channel (DTCH) and a dedicated control channel (DCCH), and at least one of a shared channel control channel (SHCCH) and a common control channel (CCCH); said processor configured to process logical-channel data for the RACH in data units having a bit size evenly divisible by N where N is an integer greater than three; and said processor configured to process logical-channel data for each logical channel within said set of logical channels associated with the RACH with a RACH MAC header that has a selected bit size equal to M r modulo N bits.