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(11)

EP 3 295 448 A1

(12)

(43) Date of publication: 21.03.2018 Bulletin 2018/12 (21) Application number: 16714583.8 (22) Date of filing: 28.03.2016

(51) International Patent Classification (IPC):  G09C 1/00(2006.01) H04L 9/00(2006.01) H04L 9/32(2006.01) (86) International application number: PCT/SG2016/050143 (87) International publication number: WO 2016/195591 (08.12.2016 Gazette 2016/49)

(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 Designated Validation States: MA MD (30) Priority: 02.06.2015 SG 10201504296X (71) Applicant: Huawei International Pte. Ltd. Singapore 486035 (SG)	(72) Inventors: WU, Shuang Singapore 117674 (SG) LEI, Hao Beijing 100085 (CN) WANG, Guilin Singapore 117674 (SG) (74) Representative: Gill Jennings & Every LLP  The Broadgate Tower 20 Primrose Street London EC2A 2ES London EC2A 2ES (GB)