Title:
SYSTEM AND METHOD FOR INITIAL ATTACHMENT IN A COMMUNICATIONS SYSTEM UTILIZING BEAM-FORMED SIGNALS
Document Type and Number:
WIPO Patent Application WO/2017/181847
Kind Code:
A1
Abstract:
A method for operating a user equipment (UE) in a millimeter wave (mmWave) communications system includes receiving a first wide beam beam-formed reference signal from a mmWave evolved NodeB (eNB) during an initial time interval, the first wide beam beam-formed reference signal carrying timing information, detecting a wide beam boundary between the first wide beam beam-formed reference signal and a second wide beam beam-formed reference signal during a subsequent time interval, wherein both the first wide beam beam-formed reference signal and the second wide beam beam-formed reference signal are rotated by a narrow beam beam-width during each intermediate time interval between the initial time interval and the subsequent time interval, and informing the mmWave eNB of an indication that the UE detected the wide beam boundary during the subsequent time interval, the indication being used to assign a narrow beam direction to the UE.
Inventors:
LIU BIN (US)
STIRLING-GALLACHER RICHARD (US)
STIRLING-GALLACHER RICHARD (US)
Application Number:
PCT/CN2017/079497
Publication Date:
October 26, 2017
Filing Date:
April 05, 2017
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04W72/04; H04W48/08
Domestic Patent References:
| WO2013032188A2 | 2013-03-07 |
Foreign References:
| US20160095003A1 | 2016-03-31 |
Other References:
WEI-CHANG LIU ET AL.: "All-Digital Synchronization for SC/OFDM Mode of IEEE 802.15.3c and IEEE 802.11 ad", IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS, vol. 62, no. 2, 28 February 2015 (2015-02-28), pages 545 - 553, XP011571617
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