Methods and Devices for Switching Anchor Carrier

摘要

Methods and devices are provided whereby the primary uplink (and downlink carrier) can be dynamically changed. Embodiments are described wherein it is determine which carrier that is to be used as a new primary carrier instead of an old carrier currently being used as a primary carrier based on a criteria/trigger event. The new carrier can be signaled between the radio base station and the user equipment when switching to the new primary carrier.