(19)

(11)

EP 2 995 036 A1

(12)

(43) Date of publication: 16.03.2016 Bulletin 2016/11 (21) Application number: 14748269.9 (22) Date of filing: 09.05.2014

(51) International Patent Classification (IPC):  H04L 5/00(2006.01) (86) International application number: PCT/IB2014/001061 (87) International publication number: WO 2014/181181 (13.11.2014 Gazette 2014/46)

(84) Designated Contracting States: AL 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 RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 10.05.2013 CN 201310172970 (71) Applicant: Alcatel Lucent 75007 Paris (FR)	(72) Inventors: YANG, Tao Shanghai 201206 (CN) LIM, Seau, Sian Swindon Wiltshire SN1 4GU (GB) (74) Representative: 2SPL Patentanwälte PartG mbB  Postfach 15 17 23 80050 München 80050 München (DE)