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

Precoding feedback method, system, user equipment and base station

A user equipment and precoding technology, which is applied in the transmission system, baseband system components, radio transmission system, etc., can solve the problem of high feedback overhead and achieve the effect of reducing feedback overhead

Inactive Publication Date: 2013-04-24
HUAWEI TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a precoding feedback method and system, user equipment and base station to solve the problem of large feedback overhead

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
  • Precoding feedback method, system, user equipment and base station
  • Precoding feedback method, system, user equipment and base station
  • Precoding feedback method, system, user equipment and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The technical solutions of the present invention will be further described in detail below through the accompanying drawings and embodiments.

[0032] figure 1 Is a schematic diagram of the method flow of the first embodiment of the present invention, figure 2 It is a schematic structural diagram corresponding to the first embodiment of the present invention. See figure 1 , The embodiment of the present invention includes:

[0033] Step 11: The user equipment receives the random beam information stream, and determines the optimal beam set according to the signal to interference and noise ratio of the random beam information stream.

[0034] Step 12: The user equipment obtains the feedback threshold.

[0035] Steps 11 and 12 have no time sequence restriction relationship.

[0036] Step 13: The user equipment feeds back to the base station information about at least one beam with a signal-to-interference-to-noise ratio higher than the feedback threshold in the optimal beam set.

...

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

A method, system, user equipment and base station for pre-coding feedback are provided. The method includes the following steps: receiving random beam information flows; determining the optimal beam set according to the signal to interference-plus-noise ratio (SINR) of the random beam information flows; getting the feedback threshold value; feeding back the information of at least one beam, of which the SINR is larger than the feedback threshold value, in the optimal beam set. The method can decrease the pre-coding feedback quantity.

Description

Technical field [0001] The present invention relates to mobile communication technology, in particular to a precoding feedback method and system, user equipment and base station. Background technique [0002] Multiple Input Multiple Output (MIMO) technology can greatly increase the transmission rate of a wireless communication system without increasing the bandwidth, and meet the requirements of high-rate data transmission services. In the MIMO system, the use of precoding technology to simultaneously transmit multiple data streams can improve the reliability and transmission rate of the transmission link. The precoding technology is performed based on the assumption that the transmitter knows all or part of the channel state information. Therefore, in many cases, the receiver needs to feed back the channel state information to the transmitter. In a multi-user environment, in order to reduce the amount of feedback, random beamforming is a possible solution. In a multi-user envi...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04L1/06H04B7/08
CPCH04B7/0417H04B7/0634
Inventor 王晓东李斌沈晖罗毅刘锋
Owner HUAWEI TECH CO LTD