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Data transmission method and device

A data transmission method and data technology, which are applied in the field of wireless data transmission methods and systems, can solve problems such as bandwidth consumption, and achieve the effects of improving accuracy, simplifying frame structure, and removing inter-frame interval and contention time.

Active Publication Date: 2019-06-07
NUFRONT MOBILE COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Typically, frames sent in modern communications have a lot of overhead, including headers, interframe space, contention time, etc., which can consume more bandwidth than payload data frames under high traffic conditions

Method used

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  • Data transmission method and device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0047] figure 1 It is a flow chart of a data transmission method provided by the present invention, including:

[0048] S101. The sending end and the receiving end perform aggregation capability negotiation.

[0049]In this embodiment, the sending end is a station STA (Station), and the receiving end is a central access point CAP (CentralAccess Point), which aggregates upstream streams of the STAs. When the STA accesses the network and establishes a connection with the CAP, the STA and the CAP negotiate aggregation capabilities, and only use aggregation to send service data streams when both parties support aggregation. Specifically, the MPDU aggregation support configuration item is added in the CAP configuration file. During the access process, the STA sends the terminal basic capability negotiation request frame SBC_REQ to the CAP to notify the CAP of its basic capabilities; after receiving the SBC_REQ, the STA compares the capability parameters. , sending a terminal basi...

Embodiment 2

[0074] image 3 It is a block diagram of a data transmission device provided by the present invention:

[0075] In this embodiment, the sending end is a station STA (Station), and the receiving end is a central access point CAP (CentralAccess Point), which aggregates upstream streams of the STAs.

[0076] This application provides a sending end, including:

[0077] 210. A first sending unit, configured for the sending end to send a terminal basic capability negotiation request frame to the receiving end,

[0078] Carry out aggregation capability negotiation with the receiving end;

[0079] When the STA accesses the network and establishes a connection with the CAP, the STA and the CAP negotiate aggregation capabilities, and only use aggregation to send service data streams when both parties support aggregation. Specifically, an aggregation support configuration item is added to the configuration file of the CAP. During the access process, the STA sends the terminal basic ca...

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Abstract

The invention provides a data transmission method and device, and the method comprises the steps: enabling a sending end and a receiving end to carry out the negotiation of the aggregation capability,confirming that both sides support the aggregation, and sending service flow data in an aggregation mode; enabling The sending end to carry out aggregation processing on the data packet to generate an aggregation frame, wherein the aggregation frame comprises a frame delineator, and the frame delineator comprises actual length indication information of an aggregation sub-frame and indication information about whether the aggregation sub-frame is the last sub-frame of the aggregation frame or not; Sending the aggregation frame to a receiving end; And enabling the receiving end to receive the aggregated frame and analyze the aggregated frame. By using the format of the aggregation frame to transmit the data, the transmission efficiency of the message is improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a wireless data transmission method and system. Background technique [0002] Typically, frames sent in modern communications have a lot of overhead, including headers, interframe space, contention time, etc., which can consume more bandwidth than payload data frames in high traffic situations. [0003] In order to improve the transmission efficiency of the wireless medium, the Ethernet II standard stipulates that multiple frames can be aggregated together and transmitted as a single aggregated frame. There is no field indicating the length of the packet in the frame format specified by Ethernet II. The lack of a field to identify the length of the packet in the aggregation frame will cause inconvenience to the receiving end in parsing. Therefore, it is necessary to add an indicator to indicate the actual length of the aggregation subframe in the aggreg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L1/00
Inventor 闫德升占学超夏占高文春艳曹小芳
Owner NUFRONT MOBILE COMM TECH