Method and apparatus for feedback overhead reduction in wireless communications

摘要

A method and apparatus for reducing feedback transmission overhead in wireless communications. Averaging, compression, or both are used to reduce a number of bits needed for transmission of channel quality information.

主权项

1. A wireless transmit/receive unit (WTRU) comprising:
a processor configured to determine a channel quality index (CQI) for a first transmission layer of each of N groups of frequency resource blocks used in a multiple input/multiple output (MIMO) communication scheme;wherein the N groups of frequency resource blocks divide a downlink bandwidth;
wherein the processor is configured to transmit each of the N channel quality indices in a different reporting transmission time interval (TTI); and wherein the processor is further configured to transmit along with each of the N channel quality indices information indicating a channel quality index corresponding to at least a second transmission layer for the same frequency resource block group.