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Method and device for correcting channel quality indicator value

A channel quality indicator and equipment technology, applied in the field of wireless communication, can solve the problem of uncontrollable network side, and achieve the effect of improving the transmission rate and air interface capacity

Active Publication Date: 2011-11-30
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The accuracy of CQI measurement is related to the implementation algorithm of the user terminal, which cannot be controlled by the network side

Method used

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  • Method and device for correcting channel quality indicator value
  • Method and device for correcting channel quality indicator value
  • Method and device for correcting channel quality indicator value

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Embodiment Construction

[0020] In order to make the purpose, technical solution, and advantages of the present invention clearer, the technical solution provided by the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0021] The technical solution of this embodiment can be applied to various communication systems, for example: Wideband Code Division Multiple Access (WCDMA), Time Division Synchronous Code Division Multiple Access (Time Division Synchronous Code Division Multiple Access, referred to as TD- SCDMA), Long Term Evolution (LTE for short), etc. In WCDMA and TD-SCDMA systems, the base station is a NodeB, and the base station control device is a Radio Network Controller (RNC for short); in the LTE system, the base station is an evolved base station (eNodeB), and the base station control device is a serving gateway ( Servicing Gateway, referred to as SGW) and Mobile Management Entity (Mobile Management Entity, referred to as...

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Abstract

The embodiment of the present invention discloses a method and a device for correcting CQI value to avoid the influence of error of the CQI measured value. The method for correcting the CQI value mainly comprises the steps of obtaining information representing wireless channel characteristics, determining a target value of the BLER according to the information representing the wireless channel characteristics, and correcting the CQI measured value according to the BLER measured value and the determined BLER target value. The method and device can determine the BLER target value according to obtained information representing the wireless channel characteristics, and correct the CQI value according to the BLER target value, taking different channel conditions into account, thereby avoiding the influence of the error of the CQI measured value and improving the transmission rate and idle port capacity.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a correction technology of a channel quality indicator value. Background technique [0002] The 3rd Generation Partnership Project (3GPP) Release 5 (Release 5, R5) introduces High Speed ​​Downlink Packet Access (HSDPA) technology, through adaptive modulation and coding, hybrid automatic retransmission, A series of key technologies such as high-order modulation and 2ms fast scheduling of base stations have realized downlink high-speed data transmission. [0003] In the HSDPA system, the user terminal measures the received wireless channel quality, each channel quality level corresponds to a Channel Quality Indicator (CQI) value, and feeds back the CQI value to the base station. After receiving the CQI, the base station combines the available power resources and code resources and the amount of data in the transmission buffer, and uses appropriate transmission power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/24H04L1/16
CPCH04L1/0026H04L1/24H04L1/0028H04L1/00H04W24/02H04L1/16
Inventor 王成毅郭房富
Owner HUAWEI TECH CO LTD
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