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Channel state information feedback method and device

A technology for channel state information and composition information, which is applied in the directions of space transmit diversity, transmission system, electrical components, etc., and can solve the problems of inability to know the number of CSI bits and improve the complexity of CSI for the base station.

Active Publication Date: 2019-03-22
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
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Problems solved by technology

In this case, the base station cannot know the number of bits of the CSI before decoding the CSI, which will increase the complexity of the base station's CSI detection

Method used

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  • Channel state information feedback method and device
  • Channel state information feedback method and device

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Embodiment Construction

[0063] In the following, some terms used in the embodiments of the present application are explained, so as to facilitate the understanding of those skilled in the art.

[0064] (1) In the embodiments of this application, the terms "network" and "system" are often used interchangeably, but those skilled in the art can understand their meanings.

[0065] (2) The term "multiple" in the embodiments of the present application refers to two or more, and other quantifiers are similar.

[0066] (3) "And / or", which describes the association relationship of associated objects, means that there can be three kinds of relationships, for example, A and / or B, which can mean: A exists alone, A and B exist simultaneously, and B exists independently. Condition. The character " / " generally indicates that the contextual objects are an "or" relationship.

[0067] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction w...

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Abstract

The present application discloses a channel state information feedback method and device. In the application, a terminal performs channel measurement to obtain channel state information (CSI) comprising a first CSI and a second CSI. The first CSI comprises the composition information of the second CSI used for determining the number of bits of the second CSI. The terminal sends the first CSI and the second CSI to a base station. By adopting the channel state information feedback method and device, the base station can determine the number of bits of the second CSI according to the first CSI, thereby reducing the detection complexity of the base station for the second CSI.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 201710827964.7 and the application name "A Channel State Information Feedback Method and Device" submitted to the China Patent Office on September 14, 2017, the entire contents of which are incorporated herein by reference Applying. technical field [0002] The present invention relates to the technical field of wireless communication, in particular to a channel state information feedback method and device. Background technique [0003] The terminal calculates channel state information (channel state information, CSI) through downlink channel measurement. The CSI includes one or more of rank indication (rank indication, RI), precoding matrix indication (precoding matrix indicator, PMI), channel quality indication (Channel Quality Indicator, CQI), and the CSI may further include channel state Information Reference Signal Resource Indicator (CSI-RS resource indicator, CRI...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04L1/00H04L1/06
CPCH04B7/0452H04B7/0456H04B7/0626H04L1/0052H04L1/0675
Inventor 高秋彬李辉拉盖施陈润华
Owner DATANG MOBILE COMM EQUIP CO LTD
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