SYSTEMS AND METHODS FOR INTER-RADIO ACCESS TECHNOLOGY (RAT) MOBILITY

摘要

Methods and apparatus for providing inter-RAT mobility between 2G/3G and 4 networks are described. A UE camped or connected to a GERAN or UTRAN network may be configured to move, either directly or through network-controlled functions, to an LTE network to perform a data call. The UE may then return to a 2G/3G network.