Title:
METHOD AND DEVICES FOR ESTIMATION OF MIMO CHANNEL STATE INFORMATION
Document Type and Number:
WIPO Patent Application WO/2019/148511
Kind Code:
A1
Abstract:
The proposed technology discloses a method for estimating Multiple Input Multiple Output, MIMO, channel state information for a radio link between a first radio node (1) comprising a number N, N ≥ 2, of receiving antenna ports (R i, i=1,... N) and a second radio node (10) comprising a number M, M ≥ 2, of transmitting antenna ports (T i, i =1,... M). The method comprises the steps of obtaining (S1) partial channel state information from a reference signal transmitted by a number X, 1 ≤ X< M, of said transmitting antenna ports (T i=1, 2.. X) and received by all of said receiving antenna ports (R i), said partial channel state information providing a measure for the N x X propagation channels between all of said receiving antenna ports (R i) and said transmitting antenna ports (T i=1, 2... X); The method also comprises estimating (S2) MIMO channel state information for all N x M propagation channels between said receiving antenna ports (R i) and said transmitting antenna portss (T i=1, 2... X) based on at least one measure assignment model that assign measures to the propagation channels between all of said receiving antenna ports (R i) and the remaining number of transmitting antenna ports (T i≠1, 2... X) that did not transmit said reference signal, and based on said obtained partial channel state information. Also disclosed is corresponding devices and computer programs. Also disclosed is a method for controlling transmission based on estimated channel state information.
Inventors:
HE ANQI (CN)
GARCIA VIRGILE (CN)
JALDÉN NIKLAS (SE)
LINCOLN BO (SE)
WANG HAI (CN)
GARCIA VIRGILE (CN)
JALDÉN NIKLAS (SE)
LINCOLN BO (SE)
WANG HAI (CN)
Application Number:
PCT/CN2018/075476
Publication Date:
August 08, 2019
Filing Date:
February 06, 2018
Export Citation:
Assignee:
ERICSSON TELEFON AB L M (SE)
HE ANQI (CN)
HE ANQI (CN)
International Classes:
H04B7/04
Domestic Patent References:
| WO2018013238A1 | 2018-01-18 |
Foreign References:
| US20140294108A1 | 2014-10-02 | |||
| CN107079308A | 2017-08-18 | |||
| US20120300867A1 | 2012-11-29 | |||
| US20170311321A1 | 2017-10-26 |
Other References:
PARTIAL RECIPROCITY BASED CSI ACQUISITION MECHANISM
See also references of EP 3750250A4
See also references of EP 3750250A4
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (CN)
Download PDF:
Previous Patent: NOVEL HETEROJUNCTION AVALANCHE PHOTODIODE
Next Patent: ANALOG BEAMFORMING ANTENNA ARRAY HAVING LOW COMPLEXITY
Next Patent: ANALOG BEAMFORMING ANTENNA ARRAY HAVING LOW COMPLEXITY