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

Abstract

A method and apparatus for adjusting a channel quality indicator (CQI) feedback period to increase uplink capacity in a wireless communication system are disclosed. The uplink capacity is increased by reducing the uplink interference caused by CQI transmissions. A wireless transmit/receive unit (WTRU) monitors a status of downlink transmissions to the WTRU and sets the CQI feedback period based on the status of the downlink transmissions to the WTRU. A base station monitors uplink and downlink transmission needs. The base station determines the CQI feedback period of at least one WTRU based on the uplink and downlink transmission needs and sends a command to the WTRU to change the CQI feedback period of the WTRU.

What is claimed is: 
     
         1 . A method for use in a wireless transmit/receive unit (WTRU), the method comprising:
 receiving a radio resource control (RRC) message including channel quality indicator (CQI) configuration information associated with more than one CQI feedback periods for reporting CQI;   transmitting CQI information according to CQI configuration information associated with a first CQI feedback period of the more than one CQI feedback periods; and   responsive to the WTRU receiving a message that (1) indicates that it is for the WTRU, and (2) includes a CQI feedback command, transmitting the CQI information according to CQI configuration information associated with a second CQI feedback period of the more than one CQI feedback periods.