Method for transmitting very high frequency radio large file based on serial hardware flow control

Abstract

The invention discloses a method for transmitting a very high frequency radio large file based on serial hardware flow control. The method comprises the following steps: first the large file is divided into N file packages of the same size; a sender very high frequency (VHF) radio sends header information of the large file to a receiver VHF radio; if a success response message is received, the sender VHF radio sends each file package to the receiver VHF radio; if no response message is received in a set time after all the file packages are sent, the file sending for the first time is finished; if the success response ratio of the file sending for the first time is larger than a set value, the sender VHF radio resends N0 unsuccessfully sent file packages to the receiver VHF radio; if no response message is received in a set time after N0 file packages are sent, the file sending for the second time is finished; and if the successful response rate of the file sending for the second time is larger than a second set vale, it is regarded that the large file is 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, central heating And other fields, used to realize the 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 transm...

AI Technical Summary

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

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