Channel quality indicator transmission timing with discontinuous reception

摘要

A user equipment 'UE' (10) capable of operating in discontinuous reception 'DRX' operation mode, comprising: a processor (682) configured to transmit channel quality indicator 'CQI' transmissions, wherein when operating in discontinuous reception 'DRX' operation mode the processor (682) is configured to begin CQI transmissions using an assigned periodic CQI reporting resource that precedes the start of a retransmission window (230) of the DRX operation mode, the retransmission window being a period during which data can be received, and to stop CQI transmissions when a condition is met, the condition selected from the group consisting of: at the end of the retransmission window (230); after a last assigned periodic CQI reporting resource that occurs during an active time longer than the retransmission window when the UE is awake; and at the end of an active time longer than the retransmission window (230) when the UE (10) is awake. A method is also described.