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EP 2 805 430 A1

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(43) Date of publication: 26.11.2014 Bulletin 2014/48 (21) Application number: 14741780.2 (22) Date of filing: 07.03.2014

(51) International Patent Classification (IPC):  H04B 7/04(2006.01) H04B 7/26(2006.01) H04W 24/00(2009.01) H04W 88/08(2009.01) H04L 27/00(2006.01) H03D 1/04(2006.01) H03M 7/00(2006.01) (86) International application number: PCT/US2014/021535 (87) International publication number: WO 2014/138525 (12.09.2014 Gazette 2014/37)

(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: 07.03.2013 US 201361774275 P 08.03.2013 US 201361775058 P 05.04.2013 US 201361808934 P 29.04.2013 US 201361817150 P 29.04.2013 US 201361817247 P 10.05.2013 US 201361821989 P 06.03.2014 US 201414198653 (60) Divisional application: 14183773.2 (71) Applicant: NEC Laboratories America, Inc. Princeton, NJ 08540 (US)

(72) Inventors: PRASAD, Narayan Wyncote, Pennsylvania 19095 (US) YUE, Guosen Plainsboro, New Jersey 08536 (US) KHOJASTEPOUR, Mohammad Lawrenceville, New Jersey 08648 (US) RANGARAJAN, Sampath Bridgewater, New Jersey 08807 (US) (74) Representative: Betten & Resch  Theatinerstrasse 8 80333 München 80333 München (DE)