Patent ID: 9572073
Date: 2017-02-14
CPC Classifications: H04L,H04W

Claim:
1. A mobile communication system, comprising: a first radio access network supporting packet-switched communication; a second radio access network supporting packet-switched communication and circuit-switched communication; an enhanced MSC/MGW; a mobile station which is configured to control for performing a handover from the first radio access network to the second radio access network realizing single radio voice call continuity (SRVCC); and a gateway which is configured to switch a path for voice communications between the mobile station and a further mobile station, from a path through the first radio access network to a path through the second radio access network in a visited network of the mobile station, based on the SRVCC capability of the mobile station, wherein the path through the second radio access network includes a circuit-switched signal exchanged between the mobile station and the enhanced MSC/MGW via the second radio access network and a VoIP media signal exchanged between the enhanced MSC/MGW and the further mobile station via the gateway.