COMMUNICATIONS DEVICES AND METHODS FOR SELECTING A WIRELESS ACCESS INTERFACE

摘要

A communications device transmits data from a communications device to a mobile communications network or receives data from a mobile communications network at a communications device. The mobile communications network includes a plurality of infrastructure equipment each providing a wireless access interface for the communications device. The wireless access interfaces may have a different frequency but operate in accordance with the same standard or may use different radio access technologies. The communication device transmits or receives the data by selecting one of the wireless access interfaces of the infrastructure equipment as a serving wireless access interface. One or more of the selected infrastructure equipment or one or more neighbouring infrastructure equipment provide an enhanced wireless access interface providing a facility for transmitting or receiving the signals at a lower power relative to a wireless access interface which is not enhanced. The communications device selects one of the wireless access interface by generating a signal reception metric for each of the wireless access interfaces provided by the one or more neighbouring infrastructure equipment and each if the wireless access interfaces provided by the selected infrastructure equipment, and selects or reselects one of the wireless access interfaces provided by the one or more neighbouring infrastructure equipment or one of the wireless access interfaces provided by the selected infrastructure equipment in accordance with predetermined criteria based on the generated signal reception metrics.