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CQI correction method and base station

A base station and threshold technology, applied in the direction of correct operation test, error prevention/detection using return channel, digital transmission system, etc., can solve problems affecting network throughput and high air interface BLER, etc., to improve throughput, The effect of reducing air interface jitter, low time complexity and space complexity

Active Publication Date: 2009-10-28
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0014] In view of this, the main purpose of the present invention is to provide a method and base station for CQI correction, so as to solve the problem that the BLER of the air interface tends to remain high and affect the network throughput in the prior art when the CQI correction method is used.

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  • CQI correction method and base station

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Embodiment Construction

[0041] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0042] A CQI correction method provided by the present invention, when it is determined that the current processing capability of the UE reaches or exceeds the set capability threshold, corrects the RTBS ​​currently fed back by the UE through the CQI status of the UE's previous feedback recorded in the tolerance window ; Correction of the current feedback RTBS ​​is controlled by the effect of the feedback CQI in the early stage, so that the revised RTBS ​​is closer to the real air interface channel quality requirement when the NodeB actually sends data.

[0043] Such as figure 2 As shown, the method for CQI correction provided by the present invention mainly includes the following steps:

[0044] Step 201. When the NodeB determines that the current processing capability of the UE reaches or exceeds the correspondin...

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Abstract

The invention discloses a channel quality indicator (CQI) correction method, which comprises the following steps: when determining that the current processing capacity of user equipment (UE) reaches or exceeds a capacity threshold corresponding to the UE, acquiring the CQI condition fed back by the UE at the earlier stage recorded in a tolerance window; and according to the length of the tolerance window and the recorded CQI condition, correcting expected data transmission block size (RTBS) of CQI fed back by the current UE. The invention also discloses a base station. The CQI correction method makes the corrected RTBS closer to real over-the-air channel quality requirement when the base station (NodeB) sends data actually, and the corrected RTBS does not exceed the upper limit of the self processing capacity of the UE so as to reduce dithering over the air and improve the system throughput.

Description

technical field [0001] The present invention relates to the resource allocation technology in the mobile communication system, in particular to a channel quality indicator (CQI) correction method and a base station. Background technique [0002] The High Speed ​​Downlink Packages Access (HSDPA, High Speed ​​Downlink Packages Access) system uses Adaptive Modulation Coding (AMC, Adapt modulation coding) technology to adaptively change transmission according to channel quality, thereby improving system performance. Channel quality indicator (CQI, channel quality indicator) is a test quantity that reflects the channel quality of the air interface. It belongs to an AMC technology. The main content of CQI includes the expected modulation mode of the user terminal (UE, User Equipment) and the expected data transmission of the UE. Block size (RTBS, Recommend Transport Block Size). CQI is the feedback made by the UE based on the measured air interface channel quality of the received...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/24H04L1/16
Inventor 孙军帅崔潇扬许芳丽阮磊峰沈雅娜张怡
Owner DATANG MOBILE COMM EQUIP CO LTD
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