Patent ID: 8571561
Filing Date: 2013-10-29
Classification: H04W

Abstract:
1. A mobile communication method in a mobile communication system including a plurality of radio access technologies, the mobile communication method comprising the steps of: notifying, from a mobile station to an access node in a first radio access technology, a desired call type for communication; notifying, from a mobile exchange station in the first radio access technology to the access node in the first radio access technology, a radio access capability of the mobile station; determining, at the access node in the first radio access technology, whether or not a radio access technology of the mobile station is to be changed from the first radio access technology to a second radio access technology, on the basis of the desired call type for the communication notified and the radio access capability of the mobile station; making, at the access node in the first radio access technology, an instruction to the mobile station, when determining that the radio access technology of the mobile station is to be changed from the first radio access technology to the second radio access technology, the instruction instructing the change from the first radio access technology to the second radio access technology; and transmitting, from the mobile station to an access node in the second radio access technology, a connection request signal, in accordance with the instruction from the access node in the first radio access technology.