UE-AUTONOMOUS CFI REPORTING

摘要

In a closed-loop wireless communication system (200), channel-side information -- such as CQI information, rank adaptation information or MIMO codebook selection information - is randomly or autonomously fed back to the transmitter (202) by having the receiver (206.i) initiate the feedback instead of using a scheduled feedback approach so that all receiving devices do not simultaneously feed back channel-side information to the transmitting device. The receiver (206.i) uses one or more antennas (209.i) to feed back channel-side information using data non-associated control multiplexing with uplink data and without uplink data, such as by using a contention-based physical channel or a synchronized random access channel.