Feedback method and equipment for channel state information

A technology of channel state information and unit state, applied in the field of communication, can solve problems such as not taking into account

Inactive Publication Date: 2011-04-20
CHINA MOBILE COMM GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in the existing LTE feedback scheme, only the feedback information of a single carrier component is considered, and how to reduce the overhead of transmitting the feedback information in the case of the increase of the feedback information overhead caused by the channel quality information feedback of multiple carrier components is not considered. method

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  • Feedback method and equipment for channel state information
  • Feedback method and equipment for channel state information

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Embodiment Construction

[0080] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0081] Embodiments of the present invention provide a channel state information feedback method, which is applied to the terminal device side for channel state information feedback, such as figure 1 shown, including:

[0082] Step s101, in PUCCH (Physical Uplink Control Channel, physical uplink control channel), feed back the channel state information of the main carrier unit, and feed back the channel state information of the auxiliary carrier unit b...

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Abstract

The embodiment of the invention discloses a feedback method and feedback equipment for channel state information. The method comprises the following steps of: in a physical uplink control channel (PUCCH), feeding back the channel state information of a main carrier unit, and feeding back the channel state information of an auxiliary carrier unit in a differential quantization coding mode; in a physical uplink shared channel (PUSCH), feeding back the channel state information of a plurality of subcarriers in the main carrier unit in the differential quantization coding mode according to the difference of the channel state information of the plurality of subcarriers in the main carrier unit and the channel state information of the main carrier unit; and feeding back the channel state information of a plurality of subcarriers in the auxiliary carrier unit in the differential quantization coding mode according to the difference of the channel state information of the plurality of subcarriers in the auxiliary carrier unit and the channel state information of the auxiliary carrier unit. The feedback method and the feedback equipment save bit overhead required in the feedback of the channel state information of a plurality of carrier units.

Description

technical field [0001] The invention relates to the communication field, in particular to a feedback method and equipment for channel state information. Background technique [0002] In the LTE-Advanced (Long Term Evolution-Advanced, hereinafter referred to as LTE-A) system, in order to support a wider system bandwidth than the LTE system, such as 100MHz, it is necessary to combine multiple carrier units (also known as component carrier ) resources are aggregated and used. The specific aggregation methods include the following two types: [0003] (1) Multiple continuous carrier components are aggregated to provide larger transmission bandwidth for LTE-A. [0004] (2) Multiple discontinuous carrier components are aggregated to provide larger transmission bandwidth for LTE-A; discontinuous carrier aggregation has more aggregation flexibility. [0005] However, in the existing LTE feedback scheme, only the feedback information of a single carrier component is considered, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/06H04W72/12
Inventor 曹亘郑瑞明程顺川张欣潘峮胡南王军
Owner CHINA MOBILE COMM GRP CO LTD
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