Overhead reduction for multi-carrier transmission systems

摘要

A method, apparatus, and computer program product, wherein a channel quality information received from a user in a multi-carrier transmission system is categorizing on a per-user basis, and one of a plurality of feedback overhead reduction techniques is individually selected for the user in response to a result of the channel categorization.

主权项

1. A method comprising:
categorizing on a per-user basis a channel quality information received from a user in a multi-carrier transmission system; and individually selecting for said user one of a plurality of feedback overhead reduction techniques in response to a result of said categorizing; wherein a carrier restriction technique for restricting transmission to and from said user to a single component carrier is applied in response to said channel quality information exceeding a first threshold; wherein a feedback compression technique for compressing a channel quality feedback information for a plurality of component carriers allocated to said user is applied in response to said channel quality information not exceeding said first threshold but exceeding a second threshold; and wherein a feedback bundling technique for bundling a plurality of feedback signals used for acknowledging or non-acknowledging transmission into a single feedback signal over a plurality of component carriers allocated to said user is applied in response to said channel quality information not exceeding said first and second thresholds but exceeding a third threshold.