(19)

(11)

EP 2 893 655 A1

(12)

(43) Date of publication: 15.07.2015 Bulletin 2015/29 (21) Application number: 12758592.5 (22) Date of filing: 04.09.2012

(51) International Patent Classification (IPC):  H04J 3/06(2006.01) H04L 12/26(2006.01) G06F 1/14(2006.01) (86) International application number: PCT/GB2012/052166 (87) International publication number: WO 2014/037684 (13.03.2014 Gazette 2014/11)

(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 (71) Applicants: Khalifa University of Science, Technology and Research Abu Dhabi (AE) British Telecommunications PLC London EC1A 7AJ (GB) Emirates Telecommunications Corporation Abu-Dhabi (AE)	(72) Inventors: AWEYA, James Abu Dhabi (AE) AL SINDI, Nayef Abu Dhabi (AE) (74) Representative: Hodsdon, Stephen James et al Mewburn Ellis LLP City Tower 40 Basinghall Street London EC2V 5DE London EC2V 5DE (GB)