SECONDARY UPLINK MODE SELECTION OPTIMIZATION

摘要

The present invention provides apparatuses, methods, computer programs, computer program products and computer-readable media regarding secondary uplink mode selection optimization. The apparatus measuring, at a user equipment served by a first base station, a measurement value in downlink to the first base station, if it is determined that the measurement value is larger than a threshold, making a first random access attempt for uplink to the first base station on a first frequency corresponding to normal uplink, if it is determined that the random access attempt for uplink on the first frequency corresponding to the normal uplink is not successful, making a second random access attempt for uplink to the first base station on a second frequency corresponding to secondary uplink, the second frequency being different from the first frequency.