Supercharge Your Innovation With Domain-Expert AI Agents!

Method and system for determining channel quality indicator

A technique for channel quality indication, channel measurement, used in wireless communications, error prevention/detection using return channels, electrical components, etc.

Inactive Publication Date: 2012-10-24
ZTE CORP
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method and system for determining the channel quality indication, so as to overcome the defect that the existing channel quality can only be reported for the entire bandwidth range

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
  • Method and system for determining channel quality indicator
  • Method and system for determining channel quality indicator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0033] A channel quality indicator (Channel Quality Indicator, CQI for short) is a measurement standard for communication quality of a wireless channel. A high value of CQI indicates better channel quality, and vice versa. The CQI of a channel can be reflected by the following performance indicators: signal-to-noise ratio (SNR), signal-to-interference-plus-noise ratio (SINR), and signal-to-noise-distortion ratio (SNDR). These values ​​are calculated by taking measurements on a given channel.

[0034] In this embodiment, a method for determining a channel quality indicator, ...

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 method and a system for determining a channel quality indicator (CQI). The method comprises the following steps that a transmitting terminal transmits a pilot signal to a receiving terminal; and after carrying on channel measurement of a sub-band which bears the pilot signal, the receiving terminal feeds back the acquired CQI of the sub-band to the transmitting terminal. The system comprises the transmitting terminal which is used for transmitting the pilot signal to the receiving terminal, and the receiving terminal which is used for feeding back the acquired CQI of the sub-band to the transmitting terminal after carrying on channel measurement of the sub-band which bears the pilot signal. By adopting the method and system disclosed by the invention, the transmitting terminal can be enabled to acquire the CQI on different sub-bands, and a basis for subsequent selection of proper modulation and coding modes on different sub-bands is supplied, so that gains of adaptive coding and modulation are acquired.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method and system for determining channel quality indication. Background technique [0002] In mobile communication systems, due to the time-varying characteristics of wireless fading channels, there are a lot of uncertainties in the communication process. In order to improve the system throughput, high-order modulation with high transmission rate and less redundant error correction codes are usually used for communication, so that the system throughput is greatly improved when the signal-to-noise ratio of the wireless fading channel is ideal, but when the channel When it is in deep fading, it is impossible to ensure reliable and stable communication; in order to ensure the reliability of communication, low-order modulation with low transmission rate and large redundant error correction codes are usually used for communication, that is, when the wireless channel is i...

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): H04W24/08H04W24/10H04L1/16
CPCH04W24/10H04W24/08
Inventor 张帅许进郁光辉梁春丽郝鹏戴博
Owner ZTE CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com