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Data transmission method, device and system

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

Active Publication Date: 2020-04-03
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

Method used

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  • Data transmission method, device and system
  • Data transmission method, device and system
  • Data transmission method, device and system

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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

Disclosed are a data transmission method, apparatus and system, belonging to the technical field of data communications. The data transmission apparatus comprises: a processing unit for generating a data frame according to data to be transmitted, the data frame successively comprising: a low-rate (LR) preamble, a basic preamble, a high-efficiency wireless local area network (HEW) preamble and a data portion, the LR preamble comprising: a low-rate short training field (LR-STF), and the LR-STF comprising: at least two first symbols arranged in a time domain, wherein the content of each of the first symbols is the same, the period of a time domain waveform corresponding to the first symbols is 1.6 microseconds, and the LR-STF is used for timing synchronization; and a sending unit for sending the data frame to a receiving end. The present invention solves the problem of relatively poor reliability of data frame transmission, and improves the reliability of data frame transmission. The present invention is 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: AccessPoint; 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: HighEfficiencyWLAN; 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 uses To carry the data of 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 Trainin...

Claims

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Application Information

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Patent Type & Authority Patents(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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