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

Patent metadata

Field	Value
Publication number	US-9282534-B2
Application number	US-201013508629-A
Country	US
Kind code	B2
Filing date	Nov 9, 2010
Priority date	Nov 9, 2009
Publication date	Mar 8, 2016
Grant date	Mar 8, 2016

Abstract

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.

First claim

The invention claimed is:

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.

2. A mobility management node, wherein the mobility management node is configured to:
in 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, receive a downlink data notification from the serving gateway device, wherein the serving gateway device checks a header of GPRS Tunneling Protocol-U plane (GTP-U) data received from the packet data network gateway device;
perform priority control for a transmission of a paging signal to a radio base station based on a priority identifier indicating whether or not a signal is related to the prioritized call based on reception of the GTP-U data included in the received downlink data notification, wherein the mobility management node transmits the paging signal including the priority identifier to the radio base station; and
determine whether to transmit the paging signal including the priority identifier, to the radio base station, in response to the received downlink data notification, wherein 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.

Assignees

• Nishida Katsutoshi
• Kawakatsu Shimpei
• Ntt Docomo Inc

Inventors

• Nishida Katsutoshi
• Kawakatsu Shimpei

Classifications

• H04W80/10

  adapted for {application} session management, e.g. SIP [Session Initiation Protocol] {(connection management H04W76/00; arrangements for session management H04L67/14)} · CPC title

• H04W76/10

  Connection setup · CPC title

• H04L65/1069

  Session establishment or de-establishment · CPC title

• H04L65/1046

  Call controllers; Call servers · CPC title

• H04L65/104

  in the network · CPC title