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Feedback method of channel quality indication and user equipment

A technology of channel quality indication and user equipment, applied in the field of communication, can solve problems such as large channel quality indication error, low base station downlink data throughput rate, and inability to reflect channel quality, so as to achieve the effect of improving accuracy and reducing error

Active Publication Date: 2019-01-15
HUAWEI TECH CO LTD
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Problems solved by technology

[0006] The method of obtaining the signal-to-interference and noise ratio in the prior art cannot reflect the actual channel quality, and the use of the instantaneous signal-to-interference-noise ratio leads to a large error in the channel quality indication, thus causing the downlink data throughput of the base station to low

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  • Feedback method of channel quality indication and user equipment
  • Feedback method of channel quality indication and user equipment

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Embodiment Construction

[0023] In the following description, for purposes of illustration rather than limitation, specific details, such as specific system architectures, interfaces, and techniques, are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0024]The technology described in this article can be used in various communication systems, such as current 2G, 3G communication systems and next-generation communication systems, such as Global System for Mobile Communications (GSM, Global System for Mobile communications), Code Division Multiple Access (CDMA, Code Division Multiple Access) system, Time Division Multiple Access (...

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Abstract

The application provides a feedback method and a user device of a signal channel quality indicator. The feedback method comprises following steps: before the advent of a start time for reporting a signal channel quality indicator, signal quality in continuous M 1 / N time slots from 1 / N time slots before the start time of a common pilot channel is obtained, wherein N is larger than 1; a calculated signal quality is obtained by calculating according to the M signal quality; on the basis of mapping the calculated signal quality, the signal channel quality indicator CQI of the common pilot channel is obtained and reported to a base station. By use of the application, through changing the reference measuring points and intervals for measuring the signal quality, the accuracy of signal quality measurement is increased so that the reported CQI error to the base station is reduced.

Description

technical field [0001] The present invention belongs to the technical field of communication, specifically relates to a user equipment, and also relates to a feedback method of a channel quality indication of the user equipment. Background technique [0002] In order to increase the transmission rate of downlink data, 3GPP (The 3rd generation Partnership Project, Third Generation Partnership Project) introduces HSDPA technology (High Speed ​​Downlink Packet Access, High Speed ​​Downlink Packet Access). AMC (Adaptive Modulation and Coding) technology is used in the high-speed downlink packet access technology. The basic principle is to adaptively adjust the modulation mode and coding rate of the transmitted data to compensate for the signal fading caused by channel changes. influence, thereby improving the signal quality performance of the signal. [0003] For example, when the UE (User Equipment, user terminal) is close to the NodeB (base station), the channel conditions ar...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/04H04W24/08H04L1/20
CPCH04L1/20H04W24/04H04W24/08
Inventor 陈东舒兵
Owner HUAWEI TECH CO LTD
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