Method and apparatus for adjusting channel quality indicator feedback period to increase uplink capacity

A wireless transmit/receive unit (WTRU) for transmitting a channel quality indicator (CQI) when the WTRU is sending uplink transmissions periodically, the WTRU comprising:

• at least one component configured to receive a first period for CQI reporting via radio resource control signaling from a wireless network;
• the at least one component further configured to monitor downlink transmissions of at least one high speed shared control channel (HS-SCCH) for high speed downlink packet access (HSDPA) transmission for the WTRU;
• the at least one component further configured to determine whether a number of transmission time intervals (TTIs) having no HSDPA transmissions for the WTRU from a last HSDPA transmission for the WTRU exceeds a first number;
• the at least one component further configured in response to the number of TTIs having no HSDPA transmission not exceeding the first number, to transmit CQI once every first period and in response to the number of TTIs having no HSDPA transmissions exceeding the first number, to transmit CQI less often than once every first period.