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Method, base station and system for feeding back codebook in LTE network through terminal

A feedback method and terminal technology, applied in the field of terminal feedback codebook, can solve the problems of not supporting more than 8 antenna port codebook feedback, not supporting vertical codebook feedback, not defining MassiveMIMORRC signaling configuration and feedback method, etc., to achieve capacity Enhanced effect

Active Publication Date: 2016-03-09
CHINA TELECOM CORP LTD
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Problems solved by technology

However, the current LTE system does not define MassiveMIMO-related RRC signaling configuration and feedback methods, so it does not support codebook feedback with more than 8 antenna ports, nor does it support vertical codebook feedback

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  • Method, base station and system for feeding back codebook in LTE network through terminal
  • Method, base station and system for feeding back codebook in LTE network through terminal
  • Method, base station and system for feeding back codebook in LTE network through terminal

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Embodiment Construction

[0023] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated. The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. The technical solution of the present invention will be described in various aspects below in conjunction with various figures and embodiments.

[0024] figure 1 It is a flowchart of an embodiment of a method for a terminal feedback codebook in an LTE network according to the present inventi...

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Abstract

The invention discloses a method, base station and system for feeding back a codebook in an LTE network through a terminal. The base station sends an RRC signal to inform the terminal that a downlink PDSCH employs a Massive MIMO transmission mode and to inform the terminal of the number of SCI-RS antenna ports. The base station sends the RRC signal to configure the codebook feedback mode of the terminal. The base station generates a forming matrix according to a PMI, and carries out the forming transmission of the data of the downlink PDSCH. The PMI comprises a polarization coupling codebook index, a horizontal codebook index, and a vertical codebook index. The method, base station and system enable a base station and a terminal of a conventional LTE system to support the configuration and feedback for the Massive MIMO technology through the extension of a conventional RRC signal and a conventional uplink feedback signal of LTE, enable the Massive MIMO technology to be used in the LTE system better, and enable the capacity, compared with the capacity of a conventional system, of the LTE system to be greatly improved.

Description

technical field [0001] The present invention relates to the technical field of mobile networks, in particular to a method, base station and system for terminal feedback codebook in LTE network. Background technique [0002] The Long Term Evolution LTE wireless communication system has become the mainstream mobile communication system in the future. Compared with the 3G CDMA wireless communication system, it further improves the system spectrum efficiency and user data throughput. The development of wireless technology, post-LTE system research (that is, 5G system) has also begun. As a new antenna technology, MassiveMIMO (large-scale MIMO) enables the MassiveMIMO system to support 3D beamforming by increasing the number of antenna elements and independently configuring radio frequency units for each element. At the same time, due to the large number of base station antennas Due to the number of terminals, the base station can support a large number of users to multiplex info...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04L1/16
Inventor 蒋峥陈鹏李欣毕奇
Owner CHINA TELECOM CORP LTD
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