CQI adjustment method, user equipment, base station and system

An adjustment method, a technology of user equipment, applied in transmission systems, digital transmission systems, using return channels for error prevention/detection, etc., can solve problems such as inaccurate CQI measurement values

Active Publication Date: 2011-06-15
SHANGHAI HUAWEI TECH CO LTD
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Problems solved by technology

[0005] Embodiments of the present application provide a CQI adjustment method, user equipment, base sta

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  • CQI adjustment method, user equipment, base station and system
  • CQI adjustment method, user equipment, base station and system
  • CQI adjustment method, user equipment, base station and system

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Embodiment Construction

[0043] The following embodiments of the present invention provide a CQI adjustment method, user equipment, base station and system.

[0044] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings For further detailed explanation.

[0045] see Figure 2A , is the flow chart of the first embodiment of the CQI adjustment method of the present application. This embodiment shows the process of sending two CQI measurement values ​​for the access subframe and the relay subframe respectively on the UE side:

[0046] Step 201: UE receives a signaling message sent by a base station, and the signaling message includes information of ...

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Abstract

The embodiment of the invention discloses a channel quality indication (CQI) adjustment method, user equipment, a base station and a system. The method comprises the following steps of: receiving a signaling message transmitted by the base station through the user equipment (UE); respectively measuring CQI of a relay subframe to obtain a first CQI measured value and measuring CQI of an access subframe to obtain a second CQI measured value; and transmitting the first CQI measured value and the second CQI measured value to the base station, so that the base station performs CQI adjustment on the UE scheduled on the relay subframe according to the first CQI measured value and performs CQI adjustment on the UE scheduled on the access subframe according to the second CQI measured value. Because the CQI can be adjusted according to the CQI of the relay subframe and the access subframe, the throughput of the UE scheduled on the relay subframe can be improved, and the error rate and UE retransmission rate are reduced for the UE scheduled on the access subframe.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular to a CQI (Channel Quality Indication, Channel Quality Indication) adjustment method, user equipment, base station and system. Background technique [0002] Relay (Relay) technology can improve cell edge coverage and cell coverage holes. In LET-A (LongTerm Evolution Advanced, Long Term Evolution Advanced System), each Typel Relay site can be regarded as an independent base station, and its cell can be regarded as an independent community. see figure 1 , is a schematic diagram of the structure of the LTE-A system. DeNB covers dUE1, dUE2 and aUE, but aUE is far away from DeNB, so the communication quality is poor. In order to enhance the communication quality of aUE on the edge of the cell covered by DeNB, RN is added to the system , but after joining the RN, the overlap between the RN coverage cell and the DeNB coverage cell forms a new cell edge of the ...

Claims

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Application Information

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IPC IPC(8): H04L1/16H04L1/00
Inventor 王燚郑创明杜建伟黄新宇杨亥娟
Owner SHANGHAI HUAWEI TECH CO LTD
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