LINEAR PRECODING IN FULL-DIMENSIONAL MIMO SYSTEMS AND DYNAMIC VERTICAL SECTORIZATION

Title:

LINEAR PRECODING IN FULL-DIMENSIONAL MIMO SYSTEMS AND DYNAMIC VERTICAL SECTORIZATION

Document Type and Number:

Japanese Patent JP2021007239

Kind Code:

A

Abstract:

To provide a method allowing reduction of an overhead caused by channel state information (CSI) feedback in full-dimensional multiple-input multiple-output (FD-MIMO) systems.SOLUTION: An evolved Node B (eNB) is configured for: generating a port precoding matrix which compress a larger number of antenna elements to a smaller number of antenna ports 1102; transmitting user equipment (UE)-specific port reference signals to UE using the generated matrix 1104; receiving a feedback signal regarding CSI measured by the UE 1106; mapping multiple data layers to UE-specific antenna ports based on the feedback signal 1108; mapping each of the UE-specific antenna ports to physical antenna elements 1110; and transmitting data to the UE based on the mapping of the multiple data layers and the mapping to the physical antenna elements 1112.SELECTED DRAWING: Figure 11

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Inventors:

ZHANG YU
WEI CHAO
CHENG PENG
WANG NENG
JILEI HOU

Application Number:

JP2020160978A

Publication Date:

January 21, 2021

Filing Date:

September 25, 2020

Export Citation:

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Assignee:

QUALCOMM INC

International Classes:

H04B7/0417; H04B7/0413; H04W16/28; H04W24/10

Foreign References:

WO2013024350A2

2013-02-21

Attorney, Agent or Firm:

Kurata Masatoshi
Morisezo Iseki
Takashi Okada

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