Cycle feedback method, device and system of broadband channel information

A technology for wideband channel and channel state information, applied in the field of devices and systems, periodic feedback methods for wideband channel information, and can solve problems such as inability to support wideband channel information feedback

Active Publication Date: 2013-11-13
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, a periodic feedback mode cannot support wideband channel information feedback from one or more transmission points based on one or more CQI values ​​based on different interference assumptions

Method used

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  • Cycle feedback method, device and system of broadband channel information
  • Cycle feedback method, device and system of broadband channel information
  • Cycle feedback method, device and system of broadband channel information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] In this embodiment, feedback N is required resource = Common RI, N of channels measured by 2 non-zero power CSI-RS resources resource The wideband PMI of each non-zero power CSI-RS resource and the N based on each non-zero power CSI-RS resource CQI = wideband CQI information for 2 interference hypotheses;

[0088] In terms of resource carrying, including 1+N resource +N resource ·(N CQI -1)=5 report types, respectively used to report RI, wideband PMI of the first CSI-RS resource, CQI based on the first interference assumption, and CQI of the first CSI-RS resource based on the second interference assumption , the wideband PMI of the second CSI-RS resource and the CQI based on the first interference assumption, and the CQI of the second CSI-RS resource based on the second interference assumption;

[0089] figure 2 It is a schematic diagram of the content and time reported in this embodiment, and the reporting time of each report type is as follows:

[0090]

[...

Embodiment 2

[0100] In this embodiment, feedback N is required resource = The channel RI measured by 1 non-zero power CSI-RS resource, the wideband PMI of the non-zero power CSI-RS resource and the non-zero power CSI-RS resource based on N CQI = wideband CQI information for 2 interference hypotheses;

[0101] In terms of resource carrying, including 1+N resource +N resource ·(N CQI -1)=3 types of reports, respectively used to report RI, wideband PMI of the CSI-RS resource, CQI based on the first interference hypothesis, and CQI of the CSI-RS resource based on the second interference hypothesis;

[0102] image 3 It is a schematic diagram of the content and time reported in this embodiment, and the reporting time of each report type is as follows:

[0103]

[0104] and

[0105]

[0106] Among them, n f is the frame number, n s is the slot number, N OFFSET，CQI and N pd Configure parameters for the upper layer, respectively indicating the subframe offset and reporting period...

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Abstract

The invention discloses a cycle feedback method, device and system of broadband channel information and relates to the communication technology. When cycle feedback is performed on a terminal, broadband channel information measured by one or more non-zero channel state indication-reference signal (CSI-RS) resources are fed back, each CSI-RS resource is based on one or more channel quality indication (CQI) information based on interference hypotheses, accordingly broadband channel information feedback of one or more transmission points based on one or more CQI values based on different interference hypotheses is supported. Meanwhile, the network side configures parameters such as corresponding non-zero-power reference signals, configuration information of interference measurement resources and cycle feedback reported moment configuration parameters for the terminal side so that needed one or more broadband channel information based on different interference hypotheses and measured by one or more non-zero-power CSI-RS resources can be received on an expected sub frame.

Description

technical field [0001] The invention relates to communication technology, in particular to a method, device and system for periodic feedback of broadband 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 be roug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00
Inventor 张然然高秋彬倪浩彭莹
Owner DATANG MOBILE COMM EQUIP CO LTD
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