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Method, device and system for data transmission

A data transmission device and a traditional technology, applied in the field of communication, can solve the problems of poor data frame signal quality, large noise, inability to effectively obtain data frame data, etc.

Active Publication Date: 2017-05-24
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Due to the limitations of some receiving end device's own attributes or the influence of environmental factors, the process of transmitting data frames from the transmitting end to the receiving end will generate relatively large noise, so that the signal-to-noise ratio in the process of transmitting data frames is low, and the receiving end receives The signal quality of the data frame is poor, and the data in the data frame cannot be effectively obtained, so the reliability of data transmission is low

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  • Method, device and system for data transmission

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Embodiment Construction

[0231] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0232] Picture 1-1 A schematic diagram of an application scenario of a data transmission method is provided for an embodiment of the present invention, as shown in Picture 1-1 As shown, the application scenario may include: AP and multiple STAs, Picture 1-1 The application scenario includes 1 AP and 3 STAs as an example. For example, the multiple STAs may include STA-1 in HEW mode and STA-2 in LR mode, and the AP may support HEW mode and Low Rate (English: Low Rate; LR for short) mode at the same time, that is, the AP is both It can exchange data frames with STA-1 in HEW mode, and the AP can also exchange data frames with STA-2 in LR mode. Exemplarily, the transmitted data frame may be a data frame in 802.11ax. When the STA-1 suppo...

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Abstract

The invention discloses a method, a device and a system for data transmission, which belong to the technical field of data communication. The data transmission device comprises a processing unit and a transmitting unit, wherein the processing unit is used for generating a data frame according to to-be-transmitted data, the data frame sequentially comprises a low rate (LR) preamble, a basic preamble, a high efficiency wireless local area network (HEW) preamble and a data part, the LR preamble comprises a low rate short training field (LR-STF), the LR-STF comprises at least two first symbols arranged in a time domain, the content of each first symbol is the same, the period of a time domain waveform corresponding to the first symbol is 1.6 microseconds, and the LR-STF is used for timing synchronization; and the transmitting unit is used for transmitting the data frame to a receiving end. Thus, the problem that the reliability of data frame transmission is poor is solved, the data frame transmission reliability is improved, and the method, the device and the system of the invention can be used for data transmission.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method, device and system. Background technique [0002] 802.11ax is a wireless local area network communication standard. In 802.11ax, an access point (English: Access Point; AP for short) and multiple stations (English: Station; STA for short) can transmit data frames to each other. [0003] In 802.11ax, a data frame consists of a basic preamble, a high-efficiency wireless local area network (English: High Efficiency WLAN; HEW for short) preamble, and a data part in sequence. Among them, the basic preamble and the HEW preamble are used to carry the parameter information of the data frame, and the data Part of the data used to carry the data frame. The basic preamble may sequentially include: traditional short training field (English: Legacy Short Training Field; abbreviation: L-STF), traditional long training field (English: Legacy Long Trai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04W84/12H04L27/26
CPCH04L5/0048H04L27/2613H04W84/12H04L1/00H04W80/00
Inventor 刘晟刘云
Owner HUAWEI TECH CO LTD
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