Channel state measurement method and apparatus thereof

A measurement method and channel state technology, applied in the field of communication, can solve problems such as CSI

Active Publication Date: 2017-10-24
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the scenario of cooperative transmission of multiple transmission points, there is no CSI (Channel State Information, referred to as CSI) measurement and feedback scheme.

Method used

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  • Channel state measurement method and apparatus thereof
  • Channel state measurement method and apparatus thereof
  • Channel state measurement method and apparatus thereof

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Embodiment Construction

[0095] Currently, CSI measurement only measures PMI (Precoding Matrix Indicator) and CQI (Channel Quality Indicator) of a single cell during single-cell transmission, or measures PMI and CQI when transmitting the same signal for joint transmission. However, for multi-point diversity coordinated transmission or multi-point multi-stream coordinated transmission, if CSI measurement is performed in the above manner, measurement will be inaccurate, and communication performance will be degraded.

[0096] For this reason, the embodiment of the present invention provides a channel state measurement scheme for the scenario where multiple coordinated transmission points perform cooperative transmission to realize CSI measurement and feedback, and uses MIMO technology (including diversity technology for improving transmission reliability or improving transmission data Rate multi-stream technology) combined with coordinated multi-point transmission technology to better serve users.

[00...

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Abstract

Embodiments of the invention disclose a channel state measurement method and an apparatus thereof. In the embodiments of the invention, a terminal receives CSI report mode indication information. The CSI report mode indication information is used for indicating the terminal to carry out CSI combined measurement and feedback based on N pieces of associated CSI measurement configuration information. Therefore, the terminal can carry out CSI measurement and feedback according to the CSI report mode indication information so that a plurality of cooperation transmission points are realized to carry out the CSI measurement and feedback under a cooperation transmission scene.

Description

technical field [0001] The invention relates to the communication field, in particular to a channel state measurement method and device. Background technique [0002] Next-generation mobile communication systems require large-capacity and high-quality data transmission. Multi-Input Multi-Output (MIMO) technology is considered to be one of the key technologies that can realize high-speed data transmission in the future. In the third generation (3G) and fourth generation (4G) mobile communication systems It has broad application prospects. Multiple transmit antennas of a traditional centralized MIMO system are all concentrated at a base station (Base Station, BS for short) end. Different from the centralized MIMO system, the multiple transmitting antennas of the distributed MIMO system are distributed in different geographical locations, and each pair of transmitting and receiving links is more independent, with large capacity, low power consumption, better coverage, and low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06
CPCH04B7/0626H04B7/0632H04B7/0639H04B7/024H04B17/309H04B7/04H04W24/10H04B7/0417H04B7/063H04B7/0643H04L5/0023H04L5/0048
Inventor 邓娜王婷李元杰
Owner HUAWEI TECH CO LTD
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