Unlock instant, AI-driven research and patent intelligence for your innovation.

Feedback method and terminal for channel state information

A technology of channel status information and status information, which is applied in the direction of transmission path sub-channel allocation, signaling allocation, and signaling as a feature to achieve the effect of increasing speed

Inactive Publication Date: 2010-12-01
ZTE CORP
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0049] The main purpose of the present invention is to provide a channel state information feedback method and terminal to at least solve the above-mentioned problems of increasing signaling overhead or expanding PUCCH required for feedback of channel state information

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Feedback method and terminal for channel state information
  • Feedback method and terminal for channel state information
  • Feedback method and terminal for channel state information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Such as figure 2 As shown, in the mode supporting closed-loop spatial multiplexing, the user equipment uses at least three report types (Report Type) to feed back channel state information, including Report Type A, Report Type B, and Report Type C; where:

[0087]When the rank RI of the channel is less than or equal to M, the user equipment uses the codeword W1 and the codeword W2 to jointly represent the channel state information of the subband or the broadband, and feeds back the indication information of the codeword W1 and the codeword W2 to the base station; Report Type A contains The rank RI of the channel and the joint indication information of a codeword W2 set division; Report Type B contains a W1 indication information and n1 channel quality indicator information CQI; Report Type C contains n2 another codeword W2 set division Indication information and n3 channel quality indication information CQI; among them, the set indication information of a codeword W2 i...

Embodiment 2

[0110] Such as image 3 As shown, in the mode supporting closed-loop spatial multiplexing, the user equipment uses at least three report types (Report Type) to feed back channel state information, including Report Type A, Report Type B, and Report Type C; where:

[0111] When the rank RI of the channel is less than or equal to M, the user equipment uses the codeword W1 and the codeword W2 to jointly represent the channel state information of the subband or the broadband, and feeds back the indication information of the codeword W1 and the codeword W2 to the base station; Report Type A contains The rank RI of the channel and the indication information of a joint coding of codeword W2 set division; Report Type B contains a W1 indication information, a W2 indication information and n1 channel quality indication information CQI; Report Type C contains n2 other A codeword W2 set division indication information and n3 channel quality indication information CQI; among them, a codewor...

Embodiment 3

[0123] Such as Figure 4 As shown, in the mode supporting closed-loop spatial multiplexing, the user equipment uses at least three report types (Report Type) to feed back channel state information, including Report Type A, Report Type B, and Report Type C; where:

[0124] When the rank RI of the channel is less than or equal to M, the user equipment uses the codeword W1 and the codeword W2 to jointly represent the channel state information of the subband or the broadband, and feeds back the indication information of the codeword W1 and the codeword W2 to the base station; Report Type A contains The rank RI of the channel, the joint indication information of a codeword W2 set division and a codeword W1 set division (that is, the joint indication information includes three parts: the indication information of RI, the set belonging indication information of W2 and the set of W1 belonging indication information); Report Type B contains another codeword W1 set division indication i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a feedback method and a feedback terminal for channel state information. The method comprises the following steps that: the terminal compares the rank RI of a channel with a set value M; the terminal determines report types of multiple pieces of feedback channel state information according to the comparison result; and the terminal feeds back the channel state information by using the determined report type. The method and the terminal solve the problem of need of increasing the signaling cost or expanding the capacity of PUCCH existing in related feedback channel state information technology and increase the speed for feeding back the channel state information to a base station.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a channel state information feedback method and a terminal. Background technique [0002] In a wireless communication system, the sending end and the receiving end use multiple antennas to obtain a higher rate by means of spatial multiplexing. Compared with the general spatial multiplexing method, an enhanced technology is that the receiving end feeds back the channel state information to the sending end, and the sending end uses the transmit precoding technology according to the obtained channel state information, which can greatly improve the transmission performance. For Single User Multi-input Multi-output (SU-MIMO), channel feature vector information can be directly used for precoding; for Multiple User MIMO (MU-MIMO), More accurate channel state information is required. [0003] In the 3rd Generation Partnership Project (3rd Generation Partnership Pro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04L1/06
CPCH04B7/0626H04L1/0028H04L5/0057H04B7/065H04L5/0091H04L5/0023H04L1/06H04L1/0026
Inventor 李儒岳徐俊陈艺戬张峻峰
Owner ZTE CORP