User equipment and base station involved in the transmission of data

A base station, comprising:

• a receiver, which in operation, receives at least a part of a signal from a user equipment over a channel, wherein the signal is transmitted based on an initial channel quality information obtained by the user equipment before transmitting the signal and indicating a first channel quality of the channel;
• a processing circuitry, which in operation, determines during processing the received signal a transmission quality information that is not an acknowledgement (ACK) or a non-acknowledgement (NACK) and that indicates a second channel quality of the channel used for receiving the signal;
• and
• a transmitter, which in operation, transmits the transmission quality information upon determining the transmission quality information, wherein the user equipment estimates a transmission quality based on the initial channel quality information and the transmission quality information, compares the transmission quality to a threshold and determines that the transmission of the signal over the channel was successful in response to the transmission quality exceeding the threshold.

A method performed by a user equipment, comprising:

• transmitting a signal to a base station over a channel, wherein the signal is transmitted based on an initial channel quality information indicating a first channel quality of the channel and obtained by the user equipment before transmitting the signal;
• receiving, after transmitting the signal, a transmission quality information that is not an acknowledgement (ACK) or a non-acknowledgement (NACK) and that indicates a second channel quality of the channel used for transmitting the signal;
• estimating a transmission quality based on the initial channel quality information and the transmission quality information;
• comparing the transmission quality to a threshold;
• and
• determining that the transmission of the signal over the channel was successful in response to the transmission quality exceeding the threshold.