Period feedback method, device and system of sub-band channel information

A technology for channel information and channel state information, applied in the field of periodic feedback methods, devices and systems for subband channel information, can solve the problems of not considering frequency domain interference coordination, indistinguishable interference measurement, unable to support subband channel information feedback, etc.

Active Publication Date: 2013-11-13
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

However, the existing periodic feedback mode is designed to support single-point multiple input multiple output (MIMO), and only supports CSI feedback based on a non-zero power CSI-RS resource measurement. At the same time, the design does not consider Dynamic frequency domain interference coordination, CQI interference measurement is only real

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  • Period feedback method, device and system of sub-band channel information
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  • Period feedback method, device and system of sub-band channel information

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Embodiment Construction

[0076] Embodiments of the present invention provide a method, device, and system for periodic feedback of sub-band channel information. When a terminal performs periodic feedback, the broadband and / or sub-band channel information measured by a non-zero power CSI-RS resource, and the non-zero power CSI-RS resource The zero-power CSI-RS resources are based on the feedback of wideband and subband CQI information for one or more interference hypotheses. In this way, subband channel information feedback that supports a transmission point based on CQI values ​​of one or more different interference assumptions is realized.

[0077] Such as figure 1 As shown, the periodic feedback method of sub-band channel information provided by the embodiment of the present invention includes:

[0078] Step S101, receiving non-zero power channel state information reference signal, configuration information of interference measurement resources, and periodic feedback reporting time configuration pa...

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Abstract

The invention discloses a period feedback method, device and system of sub-band channel information and relates to a communication technology. When period feedback is performed on a terminal, feedback of broadband and/or sub-band channel information which is measured through a non-zero power CSI - RS (Channel State Information - Reference Signal) source and broadband and sub-band CQI (Channel Quality Indicator) information of the non-zero power CSI - RS source and based on an interference hypothesis or a plurality of interference hypotheses is performed and accordingly feedback of broadband and sub-band channel information of a CQI value of a transmission point and based on the interference hypothesis or the plurality of different interference hypotheses is approved. Corresponding parameters such as non-zero power reference signals, configuration information which interferes with measurement resources and period feedback reporting time configuration parameters are configured for the terminal side through the network side and accordingly the required broadband channel information which is measured through the non-zero power CSI - RS source and based on the interference hypothesis or the plurality of different interference hypotheses can be received on expected sub-frames.

Description

technical field [0001] The present invention relates to communication technology, in particular to a method, device and system for periodic feedback of sub-band channel information. Background technique [0002] The long-term evolution-advanced (LTE-A, long-term evolution-advanced) system adopts the same-frequency networking, which not only greatly improves the spectrum utilization rate, but also causes serious signal fading at the edge of the cell and suffers from high interference from other cells. If the signal fading and interference problems are not dealt with, it will seriously affect the experience of edge users. Coordinated multiple point (CoMP) technology introduces information interaction and joint transmission between multiple cells, which can not only improve signal quality but also reduce inter-cell interference, thereby greatly improving the data transmission performance of cell edge users. [0003] The current coordinated multi-point transmission schemes can ...

Claims

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Application Information

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IPC IPC(8): H04B7/06
Inventor 张然然高秋彬倪浩彭莹
Owner DATANG MOBILE COMM EQUIP CO LTD
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