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Channel quality indicator (CQI) feedback method, communication equipment and communication system

A technology of channel quality indication and communication equipment, applied in the wireless field, can solve problems such as wasting air interface resources, and achieve the effect of saving air interface resources and reducing energy consumption

Inactive Publication Date: 2011-07-06
HUAWEI TECH CO LTD
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The size and location of the bandwidth used by the HeNB are determined by the algorithm, and the size and location of the bandwidth can be changed. According to the CQI feedback method in the prior art, when the UE under the coverage of the HeNB feeds back the CQI, many of the CQIs fed back are not used by the HeNB. frequency band, wasting air interface resources

Method used

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  • Channel quality indicator (CQI) feedback method, communication equipment and communication system
  • Channel quality indicator (CQI) feedback method, communication equipment and communication system
  • Channel quality indicator (CQI) feedback method, communication equipment and communication system

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Embodiment Construction

[0025] In order to make the specific technical solution and the purpose of the invention clearer, further description will be made below in conjunction with specific implementation methods and accompanying drawings.

[0026] Such as figure 1 As shown, a CQI feedback method provided by an embodiment of the present invention includes:

[0027] Step 101: The UE receives the frequency band information used by the femtocell sent by the femtocell;

[0028] Step 102: Measure the frequency band indicated by the frequency band information;

[0029] Step 103: Feedback the measured CQI to the micro base station.

[0030] Such as figure 2 As shown, the embodiment of the present invention also provides a CQI feedback method, including:

[0031] Step 201: the femtocell sends information about the frequency band used by the femtocell to the UE;

[0032] Step 202: Receive the CQI sent by the UE, and the CQI is fed back by the UE after measuring the frequency band indicated by the freque...

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Abstract

The invention relates to the wireless technical field and discloses a channel quality indicator (CQI) feedback method, including the following steps: a miniature base station transmits the self-use frequency band information to user equipment (UE), and a channel quality indicator transmitted by the user equipment is received and fed back after the frequency band indicated by the frequency band information is measured by the user equipment. The invention also discloses communication equipment and a communication system. In the scheme, the UE measures the frequency band indicated by the frequency band information and feeds back the measured CQI according to the frequency band information used and transmitted by the miniature base station in need of feeding back the CQI. Therefore, the UE does not need to measure all frequency bands and feed back the CQI, thus saving air interface resources.

Description

technical field [0001] The present invention relates to the field of wireless technology, in particular to a channel quality indication (Channel Quality Indication, CQI) feedback method, communication equipment and system. Background technique [0002] In a Long Term Evolution (LTE) system, in order to obtain downlink channel quality, a user equipment (User Equipment, UE) needs to feed back a CQI, and the network side selects an appropriate modulation and coding scheme for the UE according to the CQI reported by the UE. The network side controls the time and content of CQI feedback through signaling. [0003] In the prior art, according to the time when the UE feeds back the CQI, the CQI feedback can be divided into periodic triggered feedback and aperiodic triggered feedback. According to the content of CQI feedback, CQI feedback can be divided into wideband CQI and subband CQI. The wideband CQI feedback means that the UE measures the signal quality of the entire bandwidth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04L1/00
CPCH04L1/0026H04W24/10H04L1/0033
Inventor 彭劲东
Owner HUAWEI TECH CO LTD
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