Multi-carrier-based method and device for feeding back channel quality indicator

A channel quality indication, multi-carrier technology, applied in the field of communication, can solve the problems of no CQI feedback mechanism, inability to realize multi-carrier system carrier scheduling, etc., to achieve the effect of improving performance

Inactive Publication Date: 2010-06-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention is proposed to solve the above-mentioned problem that the carrier scheduling of terminals in a multi-carrier system cannot be realized due to the absence of a CQI feedback mechanism applied to multiple carriers. The present invention aims to provide a multi-carrier-based CQI feedback method and device, to solve the above problems

Method used

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  • Multi-carrier-based method and device for feeding back channel quality indicator
  • Multi-carrier-based method and device for feeding back channel quality indicator
  • Multi-carrier-based method and device for feeding back channel quality indicator

Examples

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Embodiment 1

[0035] In this embodiment, the implementation process of carrier scheduling for multi-carrier terminals on the system side is described.

[0036] figure 1 It is a flowchart of a multi-carrier terminal feeding back multi-carrier CQI information according to an embodiment of the present invention, such as figure 1 Shown, comprise the following steps (step S102-step S110):

[0037] Step S102, the system side judges the scheduling requirements between carriers according to the resource allocation of the system and the channel quality of the carriers in the connected state, judges that scheduling between carriers is required, and then sends a multi-carrier CQI information feedback command to the multi-carrier terminal through the control channel. In the specific implementation process, the CQI information feedback instruction may be a format instruction indication sent to the multi-carrier terminal through the control channel. For example, if the value of the format instruction is...

Embodiment 2

[0046] In this embodiment, the implementation process of carrier scheduling for terminals in a multi-carrier cell by the system side is described.

[0047] image 3 It is a flow chart of feeding back multi-carrier CQI information by a terminal in a multi-carrier cell according to an embodiment of the present invention, as shown in image 3 As shown, the following steps are included (step S302-step S306):

[0048] Step S302, the terminal periodically acquires CQI information of all carriers in the cell. Similar to the CQI information of each carrier in Embodiment 1, the CQI information of each carrier acquired by the terminal may be one of the above four types, and, preferably, the CQI information of each carrier may be combined into one CQI information packet .

[0049] Step S304, the terminal sends the obtained multi-carrier CQI information of the cell to the system side through the PUCCH or PUSCH of the carrier in the connected state of the terminal.

[0050] Figure 4 ...

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Abstract

The invention provides a multi-carrier-based method and a multi-carrier-based device for feeding back a channel quality indicator (CQI). The method comprises the following steps that: a terminal acquires multi-carrier channel quality indicator information aperiodically or periodically, and reports the multi-carrier channel quality indicator information to a system side so as to ensure that the system side takes the multi-carrier channel quality indicator information as one of carrier scheduling parameters to carry out carrier scheduling of a terminal service or a cell carrier scheduling of the terminal service, wherein the multi-carrier channel quality indicator information comprises channel quality indicator information of each carrier of terminal working carriers or channel quality indicator information of a plurality of carriers in a cell of the terminal. The method and the device realize that the system side schedules the multi-carrier according to multi-carrier CQI information reported by the terminal, and solve the problems that carrier scheduling of the terminal in a multi-carrier system cannot be realized in the prior art because of not being applied to a CQI feedback mechanism of the plurality of carriers so as to improve the performance of the system.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a multi-carrier-based Channel Quality Indication (Channel Quality Indication, CQI for short) feedback method and device. Background technique [0002] The fourth-generation mobile communication system has higher spectral efficiency than the third-generation mobile communication system (for example, TD-SCDMA system or 802.16E system), but due to the need for smooth evolution of the mobile communication system and to protect the interests of operators, Within a certain period of time, the fourth generation communication system and the third generation mobile communication system will be compatible or coexist. [0003] In a large bandwidth / multi-carrier system such as the fourth-generation communication system, the inter-carrier scheduling of multi-carrier terminals, as well as the work service scheduling and resource scheduling allocation of terminals on multi-carriers in the cel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/16H04W72/12
CPCH04W72/1284H04W72/21
Inventor 韩小江毕峰夏树强孙云锋
Owner ZTE CORP
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