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Method for transmitting downlink channel response information and terminal

A channel response and information transmission technology, applied in the field of channel estimation, can solve the problem of no terminal feedback Cdl to propose a specific solution, etc., to achieve the effect of facilitating early scheduling, reducing the amount of information, and reducing the amount of transmitted data

Active Publication Date: 2009-12-30
芯鑫融资租赁(厦门)有限责任公司
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  • Application Information

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Problems solved by technology

It can be seen that if the symmetry of the spatial channel is to be used to simplify the work of channel estimation, the terminal needs to feed back the downlink channel response information Cdl. However, the current prior art does not propose a specific solution for how the terminal feeds back Cdl

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  • Method for transmitting downlink channel response information and terminal
  • Method for transmitting downlink channel response information and terminal
  • Method for transmitting downlink channel response information and terminal

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Embodiment Construction

[0027] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0029] The first embodiment of the present invention relates to a downlink channel response information transmission method, specifically as figure 2 shown.

[0030] In step 210, the terminal divides the system bandwidth into N frequency bands, where N>1. In this step, the frequency bands are divided in a manner of equal width, which makes the ...

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Abstract

The invention relates to the field of wireless communication, and discloses a method for transmitting downlink channel response information and a terminal. In the invention, the detected downlink channel response information is subjected to first-order quantification in a plurality of frequency bands respectively and then transmitted so that the downlink channel response information can be separately transmitted to a base station more accurately. M pieces of maximum channel response information in the channel response can be firstly fed back, and then other channel response information is fed back; each piece of channel response information also can be transmitted in predetermined order; and each first-order quantification value of the downlink channel response information also can be transformed, main components in the transformation result are transmitted, and then secondary components are transmitted.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to channel estimation technology. Background technique [0002] In order to improve the system capacity of the wireless communication system, the base station needs to adopt dynamic resource scheduling technology on both the downlink and uplink, which requires the base station to know the channel response information of the downlink and uplink. In the current communication system, the base station understands the coding and modulation schemes that the current terminal can use for the downlink through the downlink channel quality indication information (Channel Quality Information, referred to as "CQI") returned by the terminal, where the CQI includes the channel response C and the interference I The common influence of CQI can be correctly considered as a monotonic function of C / I. [0003] The uplink and downlink channel quality indicator generation and usage schemes are as f...

Claims

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Application Information

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IPC IPC(8): H04B7/12H04B1/707
Inventor 张小东简相超吴涛陈垚
Owner 芯鑫融资租赁(厦门)有限责任公司
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