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A method and device for reporting channel state information

A technology of channel status information and frequency bands, applied in digital transmission systems, electrical components, and error prevention, etc., can solve the problems of inability to complete multiple frequency band broadband component information and sub-band component information, reporting, etc., to improve feedback efficiency and accuracy , improve accuracy, and save channel resources

Active Publication Date: 2011-12-21
DATANG MOBILE COMM EQUIP CO LTD
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AI Technical Summary

Problems solved by technology

[0025] In the existing technical solutions, the PUSCH reporting format can only report the broadband component information and sub-band component information of the entire system bandwidth, and cannot complete the reporting of broadband component information and sub-band component information in multiple frequency bands

Method used

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  • A method and device for reporting channel state information
  • A method and device for reporting channel state information
  • A method and device for reporting channel state information

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Embodiment Construction

[0049] In the prior art, when determining the precoding matrix corresponding to the subband, the broadband component information used is the broadband component information corresponding to the broadband of the whole system. Since the bandwidth information of the whole system cannot match the channels of all subbands, As a result, the precoding matrix selected for some subbands does not match the channel of the subband, which in turn leads to the problem of inaccurate channel state information feedback; moreover, the current PUSCH reporting format cannot realize broadband component information and subband component information of multiple frequency bands report. In view of the above-mentioned problems existing in the prior art, an embodiment of the present invention provides a method for reporting channel state information. The method mainly includes: dividing the system bandwidth into multiple frequency bands, and for each frequency band, according to the frequency range corre...

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Abstract

The invention discloses a method and device for reporting channel state information so as to improve the accuracy and the efficiency of the channel state information. The method comprises the following steps that: a terminal acquires the number of frequency bands included in a system bandwidth range; the terminal determines the frequency range of each frequency band according to the number of frequency bands; the terminal determines wideband element information corresponding to the frequency band according to a channel estimation parameter of the frequency range corresponding to the frequency band aiming at each frequency band; the terminal determines sub-band element information corresponding to a sub-band according to wideband element information of the frequency band to which the sub-band belongs and the channel state information of the sub-band aiming at each sub-band; and the terminal feeds back the channel state information to a base station, wherein the channel state information comprises the sub-band element information of each sub-band or a label of the sub-band element information of each sub-band in a code book. By adopting the technical scheme provided by the invention, the accuracy and the efficiency of the channel state information are improved.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method and device for reporting channel state information based on PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel). Background technique [0002] At present, each cell in the wireless cellular network system usually has a base station to communicate with terminals, and the types of terminals include mobile terminals (such as mobile phones), personal computers, PDAs (Personal Digital Assistant, personal digital assistants) and so on. Before data transmission with the terminal, the base station sends a known signal sequence to the terminal at an agreed time and on a specific frequency. The known sequence is a reference signal or pilot signal, so that the terminal can obtain a channel based on the received reference signal estimated value, and feed back the channel estimated value to the base station; the base station then preprocesses the data to...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/06
Inventor 高秋彬荆梅芳肖国军孙韶辉
Owner DATANG MOBILE COMM EQUIP CO LTD
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