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Channel quality index feedback method, receiver and transmitter

A channel quality and receiver technology, applied in the field of communications, can solve problems such as system performance degradation, and achieve the effect of improving performance

Inactive Publication Date: 2010-02-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] The present invention is made in consideration of the above-mentioned problems. For this reason, the main purpose of the present invention is to provide a channel quality index feedback method, receiver and transmitter, to solve the problem of using the same CQI feedback in different communication scenarios in the related art. method, making the problem of system performance degradation

Method used

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  • Channel quality index feedback method, receiver and transmitter
  • Channel quality index feedback method, receiver and transmitter
  • Channel quality index feedback method, receiver and transmitter

Examples

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Embodiment 1

[0080] According to an embodiment of the present invention, a receiver is provided for feeding back CQI. image 3 is a block diagram of a receiver according to an embodiment of the present invention, such as image 3 As shown, it includes a receiving module 30 , a determining module 32 , and a feedback module 34 , and the above modules will be described in detail below.

[0081] The receiving module 30 is configured to receive a notification message from the transmitter, wherein the notification message carries index information and feedback resource information corresponding to the channel quality index feedback mode, and the feedback resource information carries the required uplink resources;

[0082] The determining module 32 is connected with the receiving module 30, and is used to feed back resource information according to the index information corresponding to the channel quality index feedback mode received by the receiving module 30 and carrying the uplink resource f...

Embodiment 2

[0088] According to an embodiment of the present invention, a transmitter is provided, which is used to determine the channel quality index feedback method used by the receiver and the uplink resources required for the feedback, and perform resource allocation according to the channel quality index fed back by the receiver. Figure 4 is a block diagram of a transmitter according to an embodiment of the present invention, such as Figure 4 As shown, it includes a determination module 40, a sending module 42, a receiving module 44, and a resource allocation module 46. In addition, it may also include a setting module, which is used to pre-set the channel environment information, the moving speed of the receiver, the scheduling mode information and the feedback mode. Mapping relations. Next, each of the above-mentioned modules will be described in detail.

[0089] The determination module 40 is used to determine the channel quality index feedback mode, the index information corr...

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Abstract

The invention discloses a channel quality index feedback method, a receiver and a transmitter. The method comprises that: the transmitter determines a channel quality index feedback mode and index information corresponding to the channel quality index feedback mode according to the movement speed of the receiver, channel environment information and dispatching mode information; the transmitter transmits notification message to the receiver, wherein the notification message carries the index information corresponding to the channel quality index feedback mode and feedback resource information,and the feedback resource information carries uplink resources required when the receiver feeds back channel quality indexes; and the receiver determines the corresponding channel quality index feedback mode according to the index information, and adopts the corresponding channel quality index feedback mode to feed back the channel quality index information on the uplink resources according to thefeedback resource information. Through the technical scheme, the determination of different CQI feedback modes according to communication scenes can be realized, and the dispatching performance of the system can be improved.

Description

technical field [0001] The present invention relates to the communication field, and in particular, relates to a channel quality index feedback method, a receiver and a transmitter. Background technique [0002] In the communication field, a channel quality index (Channel Quality Indication, CQI for short) is information that a receiver feeds back channel conditions to a transmitter in a communication system. [0003] The transmitter corresponds the CQI information fed back by the receiver to a certain transport block size, coding mode, and modulation mode, and on this basis, performs resource allocation and scheduling for the receiver according to the CQI information. Therefore, the authenticity of the channel that can be reflected by the CQI information and the uplink overhead occupied during feedback will have a greater impact on system performance. [0004] However, in practice, the realness of the channel reflected by the CQI information and the resources consumed by t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04B7/26
Inventor 彭爱华朱常青赵楠梁枫李峰王斌
Owner ZTE CORP
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