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Data transmission method and device

A data transmission method and data technology, applied in transmission systems, baseband system parts, electrical components, etc., can solve problems such as increasing system redundancy and reducing system efficiency, and achieve the effect of improving accuracy

Inactive Publication Date: 2011-04-20
HUAWEI TECH CO LTD
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Problems solved by technology

[0009] Although using this method can improve the accuracy of channel estimation in frequency hopping transmission mode, it increases system redundancy and reduces system efficiency

Method used

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  • Data transmission method and device

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Embodiment Construction

[0026] 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, not all, embodiments of the present invention. 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.

[0027] First introduce the data transmission method provided by the embodiment of the present invention, figure 1 The flow of the first embodiment of the data transmission method is described. This embodiment describes the transmission process of a time slot in a subframe, including:

[0028] 101. Generate first local reference information for data in a first time slot in a subframe, and generate second local reference information for data in a second time slot in ...

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Abstract

The invention relates to the field of communication technology and discloses data transmission method and device. The data transmission method comprises the following steps of generating first local reference information for data of a first time slot in a subframe and generating second local reference information for data of a second time slot in the subframe; generating first additional reference information for the data of the first time slot, and generating second additional reference information for the data of the second time slot; and sending the first local reference information and the first additional reference information in the same single-carrier frequency division multiple access symbol in the first time slot; and sending the second local reference information and the second additional reference information in the same single-carrier frequency division multiple access symbol in the second time slot, wherein the first local reference information and the second additional reference information are in a first subband, and the first additional reference information and the second local reference information are in a second subband. By using the invention, the accuracy of channel estimation in a frequency hopping transmission mode can be improved under the condition of not increasing system redundancy.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a data transmission method and device. Background technique [0002] The information transmitted by the wireless communication system can be roughly divided into two types: data (data) and reference information (RS: Reference Signal). The data is the information that the sending end needs to transmit to the receiving end. This information is originally unknown at the receiving end and needs to be obtained through demodulation; while the reference information is information that both the sending end and the receiving end already know. Its function is to It is convenient for the receiving end to perform operations such as channel estimation, thereby helping the receiving end to perform data demodulation. [0003] Since the reference signal cannot actually carry useful information, the reference signal increases the redundancy (Overhead) and reduces the efficiency of the sys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/713H04L25/02
Inventor 李强张永平武雨春
Owner HUAWEI TECH CO LTD
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