METHOD FOR REGISTERING HOME ROUTED ROAMING USER EQUIPMENT WITH IMS NETWORK

Title:

METHOD FOR REGISTERING HOME ROUTED ROAMING USER EQUIPMENT WITH IMS NETWORK

Document Type and Number:

WIPO Patent Application WO/2017/039187

Kind Code:

A1

Abstract:

One disclosure of the present specification provides a method for a proxy-call session control function (P-CSCF) of a home public land mobile network (H-PLMN) to register a roaming user equipment with an IP multimedia subsystem (IMS) network. The method may comprise the steps of: receiving an identifier of a visited public land mobile network (V-PLMN) in which a user equipment is roaming, wherein the identifier of the V-PLMN is received in a state where packet data network (PDN) connection for the user equipment is established but the user equipment is not registered with the IMS network; receiving, from the user equipment, a REGISTER message for registration with the IMS network; adding the identifier of the V-PLMN to a header of the REGISTER message; and transmitting the REGISTER message to which the identifier of the V-PLMN is added to an Interrogating-CSCF (I-CSCF).

Inventors:

KIM HYUNSOOK (KR)
RYU JINSOOK (KR)
KIM LAEYOUNG (KR)
YOUN MYUNGJUNE (KR)
KIM DONGSOO (KR)

Application Number:

PCT/KR2016/009025

Publication Date:

March 09, 2017

Filing Date:

August 17, 2016

Export Citation:

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Assignee:

LG ELECTRONICS INC (KR)

International Classes:

H04L29/06; H04L12/28; H04W8/08

Domestic Patent References:

WO2015028083A1

2015-03-05

Foreign References:

US20120084246A1	2012-04-05
KR20100074315A	2010-07-01
US20120134323A1	2012-05-31
US20090047947A1	2009-02-19

Other References: