Mobile communication method, session control node, gateway device, and mobility management node

摘要

A mobile communication method according to the present invention includes a step of establishing, by a session control node S/P-CSCF, a prioritized-call bearer between a gateway device P-GW and a mobile station UE when an Invite signal including prioritized-call information is received; a step of transmitting, by the session control node S/P-CSCF, the Invite signal including the prioritized-call information to the gateway device P-GW after the prioritized-call bearer is established; and a step of transmitting, by the gateway device P-GW, the Invite signal including the prioritized-call information to the mobile station UE.

主权项

1. A mobile communication method which performs a process for an incoming call destined to a mobile station that is in a state of having a session control bearer relating to a prioritized call set between a serving gateway device of the mobile station and a packet data network gateway device, the method comprising:
a step A of checking, by the serving gateway device, a header of GPRS Tunneling Protocol-U plane (GTP-U) data received from the packet data network gateway device and notifying a mobility management node of a downlink data notification including a priority identifier indicating whether or not a signal is related to the prioritized call based on reception of the GTP-U data; a step B of transmitting, by the mobility management node, a paging signal to a radio base station, in response to the downlink data notification received from the serving gateway device; a step C of transmitting, by the radio base station, a paging signal to the mobile station, in response to the paging signal received from the mobility management node; and a step D of transmitting, by the mobile station, a connection setup request signal to the radio base station, in response to the paging signal received from the radio base station, wherein in the step B, the mobility management node performs priority control for the transmission of the paging signal, based on the priority identifier included in the received downlink data notification, and wherein in the step B, the mobility management node transmits the paging signal including the priority identifier to the radio base station, and in the step C, the radio base station preferentially processes the paging signal caused by arrival of a prioritized call to the mobile station in idle state over the paging signal caused by arrival of a normal call, based on the priority identifier included in the received paging signal.