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Method, device and system for reporting channel quality indicator

A technology of channel quality indication and channel matrix, applied in the field of communication

Active Publication Date: 2014-01-01
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The embodiment of the present invention provides a method, device and system for reporting channel quality indicators, which are used to solve the problem that the network side cannot accurately grasp the received information of the terminal in the coordinated multi-point transmission technology. Interference, so that resource allocation and scheduling cannot be performed correctly

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  • Method, device and system for reporting channel quality indicator
  • Method, device and system for reporting channel quality indicator
  • Method, device and system for reporting channel quality indicator

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Embodiment Construction

[0043] In the coordinated multi-point transmission technology, in order to enable the network side to accurately grasp the interference received by the terminal, so as to correctly perform resource allocation and scheduling, in the embodiment of the present invention, the terminal needs to perform initial CQI measurement for each device in the measurement set and The initial CQI of the device is reported to the network side device, and the channel matrix reference information is sent to the network side device, so that the network side device calculates and obtains the target CQI of the terminal based on the received initial CQI and channel matrix reference information of each device.

[0044] The above-mentioned measurement set includes a first device that sends service data to the UE, and at least one second device that participates in performing coordinated multi-point transmission to the UE; the first device and the second device may be base stations of different cells, or t...

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Abstract

Disclosed are a method, device, and system for reporting a channel quality indicator (CQI), applicable in solving the problem in coordinated multipoint transmission technology of the incapability of a network side to execute accurately resource distribution and scheduling due to the incapability of the network side to have accurate knowledge of the interference that a terminal is being subjected to. The method is: on the basis of measurement reference signals transmitted by each device in a measurement collection, the terminal feeding back to a network side device an initial CQI of each device in the measurement collection; on the basis of the initial CQI of each device fed back by the terminal, and of channel matrix reference information fed back by the terminal, the network side device calculating a target CQI of the terminal. This allows the network side to learn accurately the interference that the terminal is being subjected to, thus allowing for accurate execution of terminal scheduling, resource distribution, and MCS selection, for effectively improved system throughput in coordinated multipoint transmission, and for improved system performance.

Description

Technical field [0001] The present invention involves a reporting method, device and system that specializes in a channel quality instruction. Background technique [0002] In wireless honeycomb network systems, each community usually has a base station and terminal communication.Terminal types include mobile phones, notebooks, PDA, and so on.Before the data transmission process begins, the base station will send reference signals (such as the context signal) to the terminal, and the terminal obtains channel estimation values based on these reference signals.The reference signal is a known signal sequence sent at a specific time and specific frequency. Factors such as interference and noise will affect the quality of channel estimates. [0003] Under normal circumstances, the terminal is located in different geographical locations, and there will be different receiving signal intensity and noise and interference.Therefore, some terminals can communicate at a higher rate, such as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/10H04L1/06
CPCH04L2001/0092H04J11/0053H04L1/0003H04L1/0009H04L1/0026H04L1/0019H04L1/0035H04L1/0077H04L1/20H04W72/00H04W72/12H04W24/10H04L5/0035H04L5/0073H04W24/02
Inventor 高秋彬陈文洪倪浩骆纯李辉孙韶辉
Owner DATANG MOBILE COMM EQUIP CO LTD
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