Method and system for transmitting channel quality indicator information

Abstract

The invention discloses a method and a system for transmitting channel quality indicator (CQI) information. The method comprises the following steps of: interweaving the channel quality indicator information of a plurality of downlink component carriers by a predetermined method so as to obtain a plurality of interwoven channel quality indicator information; and transmitting the plurality of interwoven channel quality indicator information through a plurality of physical uplink control channels, namely PUCCHs. By means of the method and the system, the problem of poor transmission quality of the PUCHH because the PUCCH under different channel conditions bears the CQI of each component carrier respectively and the problem that the plurality of component carriers cannot be utilized fully to acquire the frequency diversity grain in the prior art are solved by interweaving the CQI information of the plurality of downlink component carriers before the CQI information of the plurality of downlink component carriers are transmitted. Through the technical scheme of the invention, the transmission quality of the PUCCH can be improved and a high frequency diversity gain is acquired so as to improve the overall performance of the system.

Description

technical field [0001] The present invention relates to the communication field, and in particular, to a method and system for transmitting Channel Quality Indicator (CQI) information. Background technique [0002] An International Mobile Telecommunications-Advanced (abbreviated as IMT-Advanced) system has relatively large system capacity and can realize high-speed data transmission. Among them, in the case of low-speed mobile and hotspot coverage, the peak rate of the IMT-Advanced system can reach 1Gbit / s, and in the case of high-speed mobile and wide-area coverage, the peak rate of the IMT-Advanced system can also reach 100Mbit / s. [0003] While achieving high-speed data transmission, in order to meet the requirements of the International Telecommunication Union-Advanced (ITU-Advanced for short), Long Term Evolution (LTE-Advanced), which is an evolution standard of Long Term Evolution (LTE for short), is The Long Term Evolution Advanced (referred to as LTE-Advanced, LTE-A...

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Problems solved by technology

[0009] In view of the above-mentioned problems in the related art aimed at the poor transmission quality of the PUCCH channel caused by the PUCCHs with different channel conditions carrying the CQI of each component carrier and the inability to make full use of multiple component carriers to obtain frequency diversity gain, the present invention is made for Therefore, the main purpose of the present invention is to provide a method and system for transmitting channel quality indication information to solve at least one of the above problems

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