Patent ID: 8712417

Claim:
A mobile communication method comprising: a step A of a mobile station transmitting a connection setup request signal containing a radio access capability of the mobile station to a network device of a first communication scheme, upon detecting a predetermined trigger while camping on in a cell of the first communication scheme; a step B of the network device of the first communication scheme transmitting an instruction signal to the mobile station in a case where the radio access capability of the mobile station is contained in the received connection setup request signal; the instruction signal instructing the mobile station to make an attempt to set up a connection in a cell of a second communication scheme; and a step C of the mobile station setting up the connection in the cell of the second communication scheme in response to the received instruction signal, wherein in the step A, the mobile station transmits a connection setup request signal not containing the radio access capability of the mobile station, in a case where the mobile station detects the predetermined trigger but the attempt to setup the connection in the cell of the second communication scheme has been made a predetermined number of times or more within a predetermined period of time.