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A VHF Radio Large File Transmission Method Based on Serial Port Hard Flow Control

A file transmission and very high frequency technology, applied in the field of serial communication, can solve problems such as link quality failure, large file transmission failure, etc., and achieve the effect of increasing the sending rate

Active Publication Date: 2018-02-02
西安烽火电子科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the link quality is unstable (the link quality is 0 for a certain period of time, that is, communication is not possible, and after a period of time, the link quality returns to a state greater than 0, and communication is possible again at this time), a In the process of continuous retransmission of the file package, the link quality has been unable to communicate, and the transmission of large files will fail

Method used

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  • A VHF Radio Large File Transmission Method Based on Serial Port Hard Flow Control
  • A VHF Radio Large File Transmission Method Based on Serial Port Hard Flow Control
  • A VHF Radio Large File Transmission Method Based on Serial Port Hard Flow Control

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Embodiment Construction

[0030] A method for transmitting a large file of a VHF radio station based on serial port hard flow control of the present invention comprises the following specific steps:

[0031] Step 1. First, refer to figure 1 , setting the application environment includes: the VHF station of the sender, the upper computer of the sender, the VHF station of the receiver and the upper computer of the receiver, the VHF station of the sender sends a large file to the VHF station of the receiver through wireless transmission, so The receiver VHF radio station is connected to the sender VHF radio station through wireless transmission, the sender VHF radio station communicates with the sender host computer through the sender serial port, and the receiver VHF radio station communicates with the receiver host computer through the receiver serial port achieve communication; then, refer to figure 2 , before sending the large file, query the link quality from the sending VHF station to the receivin...

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Abstract

The invention discloses a large file transmission method of a VHF radio station based on serial port hard flow control, comprising the following steps: first, splitting the large file into N file packages of the same size; then, sending the VHF radio station to the receiving party The VHF radio station sends the header information of the large file. If a successful response message is received, the sending VHF radio station will send each file package to the receiving VHF radio station; when all the file packages are sent and the set time has elapsed, they are not received. When the response information is received, the first file transmission is completed; if the successful response ratio of the first file transmission is greater than the first set value, the sending VHF station will resend the N0 file packages that were not successfully sent to the receiving VHF station; When all N0 file packages are sent and no response message is received after the set time, the second pass of file sending is completed; if the success response ratio of the second pass of file sending is greater than the second set value, it is considered Large file sent successfully.

Description

technical field [0001] The invention belongs to the technical field of serial port communication, and relates to a large file transmission method of a VHF radio station based on serial port hard flow control. Background technique [0002] Serial communication has a very wide range of applications in the field of communication, such as telephone, fax, video control, long-distance communication, automatic control and other industries. The serial port communication of VHF (Very High Frequency, VHF) radio station is mainly used to form a network of multiple radio stations to enhance the mutual communication between each station. It is widely used in electric power, oil fields, coal mines, urban water treatment, centralized Heating and other fields are used to realize real-time collection and transmission of on-site data. [0003] When the large file transmission of the VHF station is realized through serial port communication, the size of the large file is determined by the tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/38H04L29/08H04L1/18H04W72/08
Inventor 韩宇华杨勇王陈春黄思远梁峰张亦希常浩宇陈晨仇妙月
Owner 西安烽火电子科技有限责任公司
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