Method and System of Forwarding Capability Information of User Equipment in Internet Protocol Multimedia Subsystem Network

(19)

(11)

EP 2 843 907 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 A1)

(48)	Corrigendum issued on:
	08.04.2015 Bulletin 2015/15

(88)	Date of publication A3:
	04.03.2015 Bulletin 2015/10

(43)	Date of publication:
	04.03.2015 Bulletin 2015/10

(21)	Application number: 14186301.9

(22)	Date of filing: 26.04.2007

(51)

International Patent Classification (IPC):

H04L 29/06^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

(30)

Priority:

26.04.2006 KR 20060037870
27.04.2006 KR 20060038427

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	07008563.4 / 1853037

(71)	Applicant: Samsung Electronics Co., Ltd
	Gyeonggi-do 443-742 (KR)

(72)	Inventors:
	Bae, Eun-Hui Gyeonggi-do (KR) Song, O-Sok Gyeonggi-do (KR) Choi, Sung-Ho Gyeonggi-do (KR) Yeoum, Tac-Sun Gyeonggi-do (KR) Lim, Han-Na Gyeonggi-do (KR)

(74)	Representative: Grünecker Patent- und Rechtsanwälte PartG mbB
	Anwaltssozietät Leopoldstrasse 4 80802 München 80802 München (DE)


	Remarks:
	This application was filed on 25-09-2014 as a divisional application to the application mentioned under INID code 62.

(54)	Method and System of Forwarding Capability Information of User Equipment in Internet Protocol Multimedia Subsystem Network

(57) Disclosed is a method and system for mutually exchanging capability information of UEs for communication between a Circuit-Switched (CS) and IMS services (CSI) UE, which can use a CS call for voice communication while using an IMS session for PS service, and an IMS UE which uses an IMS session for both voice communication and PS service. A MGCF performs interworking of capability information between a CS message and an IMS message so that the IMS UE can process UE capability information through an IMS session request/response. When a call request message containing no capability information is created from a UE not supporting capability exchange, a CSI AS transfers the call request message to a peer UE after inserting estimable capability information of the UE into the call request message, and stores capability information of the counterpart UE for the UE.