Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Channel adaptive device and channel adaptive method

An adaptive, channel technology, applied in the direction of selection device, communication between multiple stations, radio/induction link selection arrangement, etc., can solve problems such as channel fading, improve throughput, reduce the number of retransmissions and data The effect of transmission delay and small block error rate

Inactive Publication Date: 2007-06-06
HUAWEI TECH CO LTD
View PDF0 Cites 42 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The technical problem to be solved by the present invention is to reduce the time delay in the channel adaptive scheme and improve the throughput, so as to overcome the defects caused by the time delay of CQI feedback and channel fading in the prior art

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
  • Channel adaptive device and channel adaptive method
  • Channel adaptive device and channel adaptive method
  • Channel adaptive device and channel adaptive method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] In order to overcome the mismatch between CQI and actual channel quality caused by the time-varying characteristics of mobile channels and channel measurement feedback delay, embodiments of the present invention provide a channel adaptation device and a channel adaptation method, which will be described respectively below.

[0042] Referring to FIG. 1 , it is a system block diagram of Embodiment 1 of the channel adaptation device provided by the present invention, including a correction parameter setting module 1 for setting correction parameters; a CQI adjustment module 2 connected to the correction parameter setting module 1, It is used to call the correction parameter to adjust the CQI data.

[0043] Wherein, the correction parameter setting module 1 can also include a man-machine interface (not shown in the figure), and the actual setting of the correction parameters is performed by the end user or the administrator; or, the correction parameters in the correction pa...

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

An adapting method of channel includes carrying out estimation on state of current channel by user terminal for obtaining CQI data, adjusting CQI data according to preset revision parameter and sending adjusted CQI data to base station, selecting modulation coding mode by base station according to adjusted CQI data and send data to user end. The device used for realizing said method and another adapting method of channel are also disclosed.

Description

technical field [0001] The invention belongs to the field of mobile communication, and in particular relates to a channel adaptive device and a channel adaptive method. Background technique [0002] When transmitting data on a wireless channel, due to the unsatisfactory channel transmission characteristics and the influence of additive noise, mistransmission and missing digital signals will inevitably occur between the sending end and the receiving end, and digital transmission errors will occur. The ratio of the signal to the total digital signal transmitted, known as the bit error rate, is used as a measure of the quality of data transmission. In the case of a certain signal-to-noise ratio, it is necessary to design the baseband signal, select the mode of modulation and demodulation, and use techniques such as time domain and frequency domain equalization to reduce the bit error rate as much as possible, so as to meet the quality of data transmission. If the above measure...

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 Applications(China)
IPC IPC(8): H04Q7/38H04L1/00H04B7/26H04L1/16H04L1/18
Inventor 刘晟余荣道李琦
Owner HUAWEI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com