Patent ID: 8892134

Claim:
A mobile communication method comprising the steps of: at a call control node, upon a reception of a call connection request signal which is an INVITE signal corresponding to a priority call, notifying a reception of the call connection request signal including priority call information, to a priority control node; at the priority control node, in response to a notification of the reception of the call connection request signal from the call control node, determining whether it is required to change a priority of a call control signal bearer for sending the call connection request signal from a first gateway connected to the call control node to a mobile terminal, to a higher priority than a priority set in the call control signal bearer; changing the priority of the call control signal bearer to the higher priority than the priority set in the call control signal bearer, when it is required to change the priority of the call control signal bearer; and performing a paging for the mobile terminal according to the changed priority of the call control signal bearer, wherein the call control node is a Proxy-Call Session Control Function (P-CSCF) at a terminating end which receives the INVITE signal as the call connection request signal transferred from an originating end, wherein in the step of performing the paging, when the priority of the call control signal bearer is changed to the higher priority than the priority set in the call control signal bearer, a mobility management node sends a paging signal including a priority indication to a radio base station so that the radio base station performs a prioritized paging for the mobile terminal according to the changed priority, and wherein the call control signal bearer is a dedicated call control signal bearer, set up between the first gateway and the mobile terminal for sending the INVITE signal received by the Proxy-Call Session Control Function, from the first gateway to the mobile terminal.