Method and system for handling a dynamic host configuration protocol internet protocol version 4 address release

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EP 2 154 872 B8

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

(15)	Correction information:
	Corrected version no 1 (W1 B1)

(48)	Corrigendum issued on:
	20.02.2019 Bulletin 2019/08

(45)	Mention of the grant of the patent:
	03.10.2018 Bulletin 2018/40

(21)	Application number: 09167912.6

(22)	Date of filing: 14.08.2009

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International Patent Classification (IPC):

H04L 29/12^(2006.01)

H04W 80/04^(2009.01)

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Method and system for handling a dynamic host configuration protocol internet protocol version 4 address release

Verfahren und System zur Handhabung einer Dynamic-Host-Configuration-Protocol-Freigabe der Internetprotokoll-Version-4-Adresse

Procédé et système pour manipuler un protocole de configuration d'hôte dynamique, protocole Internet version 4, libération d'adresse

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

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Priority:

14.08.2008 IN 1985CH2008
31.07.2009 IN 1985CH2008

(43)	Date of publication of application:
	17.02.2010 Bulletin 2010/07

(60)	Divisional application:
	12179031.5 / 2521339
	18214228.1

(73)	Proprietor: Samsung Electronics Co., Ltd.
	Suwon-si, Gyeonggi-do, 443-742 (KR)

(72)	Inventors:
	Choi, Sungho Suwon-si, Gyeonggi-do (KR) Guttman, Erik Suwon-si, Gyeonggi-do (KR) Vaidya, Rahul Suhas Suwon-si, Gyeonggi-do (KR)

(74)	Representative: Nederlandsch Octrooibureau
	P.O. Box 29720 2502 LS The Hague 2502 LS The Hague (NL)

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References cited: :

3RD GENERATION PARTERSHIP PROJECT: "3GPP TS 23.402 V.8.2.0 (2008-06); 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Architecture enhancements for non-3GPP accesses (Release 8)" INTERNET ARTICLE, [Online] 9 June 2008 (2008-06-09), pages 1-182, XP002553313 Retrieved from the Internet: URL:http://www.3gpp.org/ftp/Specs/archive/ 23_series/23.402/23402-820.zip> [retrieved on 2009-10-30]
3RD GENERATION PARTNERSHIP PROJECT: "3GPP TS 23.401 V8.2.0 (2008-06); 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access (Release 8)" INTERNET CITATION, [Online] 9 June 2008 (2008-06-09), pages 1-182, XP002508813 Retrieved from the Internet: URL:http://www.3gpp.org/ftp/Specs/archive/ 23_series/23.401/23401-820.zip> [retrieved on 2008-12-23]
DROMS BUCKNELL UNIVERSITY R: "Dynamic Host Configuration Protocol; rfc2131.txt" IETF STANDARD, INTERNET ENGINEERING TASK FORCE, IETF, CH, 1 March 1997 (1997-03-01), XP015007915 ISSN: 0000-0003
LEUNG G DOMMETY P YEGANI CISCO SYSTEMS K CHOWDHURY STARENT NETWORKS K: "WiMAX Forum/3GPP2 Proxy Mobile IPv4; draft-leung-mip4-proxy-mode-09.txt" WIMAX FORUM/3GPP2 PROXY MOBILE IPV4; DRAFT-LEUNG-MIP4-PROXY-MODE-09.TXT, INTERNET ENGINEERING TASK FORCE, IETF; STANDARDWORKINGDRAFT, INTERNET SOCIETY (ISOC) 4, RUE DES FALAISES CH- 1205 GENEVA, SWITZERLAND, no. 9, 31 July 2008 (2008-07-31), XP015059408
SAMSUNG: "Issues related to IP address release in EPC" 3GPP DRAFT; S2-085454_DHCP_RELEASE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG2, no. Sophia; 20080819, 19 August 2008 (2008-08-19), XP050267489 [retrieved on 2008-08-19]

Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).