APERIODIC TRIGGERING OF CHANNEL QUALITY INFORMATION USING PHYSICAL DOWNLINK CONTROL CHANNEL

摘要

The invention relates methods for triggering channel quality feedback for at least one of plural component carriers of a communication system available for downlink transmission. The invention suggests a mechanism for triggering channel quality feedback from a terminal where the downlink control signaling overhead for the selection of component carrier(s) to be reported on is minimized. One aspect of the invention is a new interpretation of a predetermined format for dedicated control information comprising a CQI request flag, which is depending on the status of the CQI request flag. In case the CQI request flag is set at least one further bit of the dedicated control information is interpreted as information indicative of the one or more component carriers available for downlink transmission to the terminal and the terminal is providing channel quality feedback on the channel quality experienced on the indicated component carrier or component carriers.

主权项

1. An integrated circuit for controlling a process comprising:
receiving CQI control information consisting of a plurality of bits, the plurality of bits indicating a CQI report request specifying whether a CQI report is requested or not and, when the CQI report is requested the plurality of bits further indicating a resource indication specifying one or more downlink component carriers among a plurality of downlink component carriers, for said one more downlink component carriers the CQI report is requested, wherein a combination of the plurality of bits jointly indicates both the CQI report request and the resource indication and no one bit of the plurality of bits alone indicates the CQI report request; and transmitting, when the CQI report is requested, the CQI report for said one or more downlink component carriers specified by the resource indication.