Radio access network node, radio terminal, core network node, and method therefor

Abstract

In response to receiving from a source RAN node (), on a direct interface (), a message requesting a handover of a radio terminal () from a first network to a second network, a target RAN node () receives at least one of slice information and flow information from a core network (), and controls communication of the radio terminal () based on at least one of the slice information and the flow information. The slice information relates to a network slice in the second network. The flow information relates to at least one session to be established in the second network, serving as a bearer-less network, in order to transfer at least one packet flow of the radio terminal (). It is thus possible, for example, to provide an Inter-RAT handover procedure involving transfer of handover signaling messages on a direct inter-base-station interface.