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Channel state information reporting method and device

A technology of channel state information and request information, which is applied to the separation device of the transmission path, sub-channel allocation of the transmission path, wireless communication, etc., can solve the problem of different direction angles, achieve small changes, improve system performance, and realize simple Effect

Active Publication Date: 2015-06-24
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in fact, because the terminal may have different positions in the vertical direction and different distances from the base station, the orientation angles on the vertical plane are also different.

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  • Channel state information reporting method and device
  • Channel state information reporting method and device

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Embodiment Construction

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0029] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be unders...

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Abstract

The present invention discloses a method for reporting channel state information, comprising the following steps of: acquiring, by UE, information about at least two sets of CSI RSs, wherein the information about CSI RSs comprises time domain resource and frequency domain resource occupied by CSI RSs; and measuring, by the UE, a reference signal according to the information about at least two sets of CSI RSs, determining channel state information, and reporting the channel state information to a base station. Another aspect of the present invention further provides a device for reporting channel state information. By the technical solutions provided by the present invention, after pre-coding the CSI RSs, the system performance can be improved, and the resources occupied by the CSI RSs may be greatly saved in practical applications, so that more downlink physical resources may be used for transmission of physical downlink shared channels (PDSCH), thereby increasing the throughput of downlink traffic.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a method and device for reporting channel state information in a multi-antenna wireless communication system. Background technique [0002] In the Long Term Evolution Advanced system (LTE-A, Long Term Evolution Advanced), in order to improve cell throughput and reduce interference between users, each cell can be configured with 16, 32, 64 or more transmit antennas for Do beamforming. The base station configures a channel state information reference signal (CSI RS, Channel State Information Reference Signal) for each user equipment (UE), and the UE uses the channel state information reference signal (CSI RS) to measure the channel state information (CSI) of the channel, and then sends the channel state information (CSI) to the base station Give feedback. Since the design of CSI RS before 3GPP Release 12 is based on the actual number of physical antennas, because the CSI RS be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02
CPCH04W24/10H04B17/24H04B7/0469H04B7/0478H04B7/0639H04B7/065H04L5/0048H04W72/23H04W72/54H04B7/04H04L5/0007H04W24/02H04W72/0446H04W72/0453
Inventor 付景兴李迎阳杨云川
Owner BEIJING SAMSUNG TELECOM R&D CENT
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