FIELD: radio engineering, communication.
SUBSTANCE: channel quality information may be estimated for a number of downlink carriers. An uplink control channel may be configured in a flexible manner based on the number of activated carriers and whether those carriers are configured with MIMO. The feedback cycle for the channel quality information may remain constant.
EFFECT: systems, methods, devices and computer-readable media enable transmission of downlink channel quality information and acknowledgment information in a multi-carrier wireless communication system.
41 cl, 22 dwg, 2 tbl
