Method, device and system for reporting channel quality indicator

A technology of channel quality indication and channel matrix, which is applied in the field of communication, can solve problems such as inability to accurately grasp terminal interference, inability to correctly execute resource allocation and scheduling, and achieve the effect of improving system throughput and system performance

Active Publication Date: 2011-08-10
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 ac...

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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

[0040] 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.

[0041] 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

The invention discloses a method, device and system for reporting a channel quality indicator, which are used for solving the problem that resources can not be correctly distributed and dispatched because a network side cannot accurately master interference to a terminal in a multi-point cooperative transmission technology. The method comprises the following steps: UE (User Equipment) feeds back an initial CQI (Channel Quality Indicator) of each device in a measurement set to a network side device according to measuring reference information transmitted by each device in the measurement set; and the network side device calculates a target CQI of the UE according to the initial CQI of each device fed back by the UE and channel matrix reference information fed back by the UE. Therefore, the network side can accurately master the interference to the UE so as to correctly execute UE dispatching, resource distribution and MCS (Modulation and Coding Schemes) selection, thereby system throughout under coordinated multipoint transmission is effectively increased and system performance is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for reporting channel quality indicators. Background technique [0002] In a wireless cellular network system, each cell usually has a base station that communicates with terminals. Types of terminals include mobile phones, notebooks, and PDAs, among others. Before the data transmission process starts, the base station will send reference signals (eg, pilot signals) to the terminal, and the terminal will obtain channel estimation values ​​according to these reference signals. The reference signal is a known signal sequence sent at a specific time and a specific frequency by agreement. Factors such as interference and noise will affect the quality of channel estimation. [0003] Usually, terminals are located in different geographic locations, and have different received signal strengths and strengths of noise and interference. Therefore, some termi...

Claims

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Application Information

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IPC IPC(8): H04W24/10H04L1/06
CPCH04L1/0009H04L1/0003H04L1/0026H04W24/10H04J11/0053H04W24/02H04L1/06H04L5/0035H04L2001/0092H04L1/00H04L5/0073H04L1/0019H04L1/0035H04L1/0077H04L1/20H04W72/00H04W72/12
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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