Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
EXPLICIT CHANNEL STATE INFORMATION FEEDBACK
Document Type and Number:
WIPO Patent Application WO/2018/064801
Kind Code:
A1
Abstract:
Reporting channel state information (CSI) with reduced overhead is particularly valuable for 5G and similar systems with multiple antennas. For a downlink channel a user equipment quantizes one or more beam responses by multi-stage beamforming, selects at least one of the quantized beam responses for reporting; and reports CSI feedback for the channel to include the at least one selected beam response and indices of transmit and receive beams corresponding thereto. In a specific example this multi-stage beamforming includes a first stage transmit beamforming and a second stage receiving beamforming, such that each of the quantized beam responses is for one beam pair comprising one transmit beam and one receive beam; and the quantized beam responses that are selected and reported are only for beam pairs.

Inventors:
MIAO, Deshan (Room 903, Building 13,Linheli, Tongzhou District, Beijing 1, 101101, CN)
Application Number:
CN2016/101458
Publication Date:
April 12, 2018
Filing Date:
October 08, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NOKIA TECHNOLOGIES OY (Karaportti 3, Espoo, 02610, FI)
NOKIA TECHNOLOGIES (BEIJING) CO., LTD. (Unit 18, Room 1001 Level 10, East Tower, World Financial Center,,No. 1, East Third Ring Middle Road, Chaoyang District, Beijing 0, 100020, CN)
International Classes:
H04B17/24
Foreign References:
US20060155533A12006-07-13
US20120082198A12012-04-05
EP2134016A12009-12-16
CN103685093A2014-03-26
CN101207590A2008-06-25
Attorney, Agent or Firm:
KING & WOOD MALLESONS (20th Floor, East Tower World Financial Centre,,No. 1 Dongsanhuan Zhonglu, Chaoyang District, Beijing 0, 100020, CN)
Download PDF: