CONTROL AND TRANSMISSION OF UPLINK FEEDBACK INFORMATION FROM A WTRU IN A CELL_FACH STATE

摘要

A method and apparatus for transmitting uplink feedback information by a WTRU in a Cell_FACH state is disclosed. Uplink feedback information such as a channel quality information (CQI) and hybrid automatic retransmission request (HARQ) acknowledgement/negative acknowledgement (ACK/NACK) information may be transmitted to the universal terrestrial radio access network (UTRAN) by a wireless transmit/receive unit (WTRU). A E-DCH resource for UL transmission is received, an assignment of a contention-free access is received, and a configuration from the network to send UL feedback information is also received. In a different embodiment, uplink feedback information is transmitted based on an existance of at least a predetermined condition. Explizit and implicit triggers.