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Method, base station, terminal equipment and system for channel state information feedback

A technology for channel state information and terminal equipment, which is applied in baseband systems, baseband system components, transmission systems, etc., and can solve problems such as affecting system throughput.

Active Publication Date: 2021-03-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the embodiments of this patent application is to provide a method, base station, terminal equipment and system for channel state information feedback, so as to solve the problem in the prior art that affects the system throughput when the number of antennas at the data transmitting end is large. technical problem

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  • Method, base station, terminal equipment and system for channel state information feedback
  • Method, base station, terminal equipment and system for channel state information feedback
  • Method, base station, terminal equipment and system for channel state information feedback

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Embodiment Construction

[0060] The following will describe the technical solutions in the embodiments of the patent application with reference to the drawings in the embodiments of the patent application. Apparently, the described embodiments are part of the embodiments of the patent application, not all of them. Based on the embodiments in this patent application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this patent application.

[0061]With the continuous development of communication theory and practice, more and more wireless communication technologies have begun to appear and gradually mature. The above wireless communication technologies include but are not limited to Time Division Multiple Access (TDMA) technology, Frequency Division Multiple Access (FDMA) technology, Code Division Multiple Access (CDMA) technology, Time Division Synchronization Code Division Multiple Access (Time Division-Synchr...

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Abstract

The invention discloses a method for channel state information feedback, a base station, terminal equipment and a system. The method includes: a terminal device receives a reference signal sent by a base station; the terminal device determines channel state information according to the reference signal; and the terminal device sends the channel state information to the base station for the base station to determine a predetermined Encoding matrix F. The precoding matrix F=C 1 C 2 W, where C 1 is the first level precoding matrix, C 2 is the second-level precoding matrix, and W is the third-level precoding matrix. with the C 1 The corresponding channel state information includes beam information, and the C 2 The corresponding channel state information includes long-term broadband channel information, and the channel state information corresponding to W includes instantaneous channel information. The patent application can reduce the total pilot frequency and CSI feedback overhead, thereby improving the system throughput.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, to a method, base station, terminal equipment and system for channel state information feedback. Background technique [0002] The emergence of multiple input multiple output (Multiple Input Multiple Output, MIMO) technology has brought revolutionary changes to wireless communication. By deploying multiple antennas on both the transmitting end device and the receiving end device, MIMO technology can simultaneously provide multiple channels independent of each other, thus increasing the data transmission rate exponentially. MIMO technology uses precoding. In the traditional one-level precoding structure, the number of radio frequency channels is the same as the number of transmitting antennas. [0003] Massive MIMO (Massive MIMO) can improve link quality, improve cell coverage, and improve system performance by using a large number of antennas to achieve a significant inc...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B7/06
CPCH04B7/0413H04B7/0456H04B7/0626H04B7/04H04B7/06H04B7/0478H04B7/0482H04B7/0632H04B7/0634H04B7/0639H04B7/0658H04L5/0023H04L5/0091H04L25/0204H04L25/0224H04L5/0048H04L1/00H04W88/08
Inventor 武露毕晓艳尚鹏
Owner HUAWEI TECH CO LTD
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