Air-ground high-speed reliable file transmission communication method

Abstract

The invention discloses an air-ground high-speed reliable file transmission communication method, which relates to the technical field of aviation communication, and. Key points of a technical solution for the method is characterized by are that comprising an application layer and a transmission layer are included, and a file transmission middle layer is arranged between the transmission layer andthe application layer; the file transmission middle layer transmits control flow information according to a TCP protocol,: a sender opens a file transmission session by initiating connection to a TCPport of a receiver, the sender and the receiver perform protocol version negotiation at the same time, and the receiver sets parameters used in the file transmission process; and transmitting data stream information is transmitted according to a UDP protocol, and the receiver creates a UDP port and informs the sender of the UDP port; and then the sender starts to send the file, so that the problems of low efficiency caused by real-time file transmission of a TCP protocol in a high-delay air-ground link in the end-to-end communication process of the existing airborne equipment and the ground,and easy packet loss and easy network congestion of a UDP protocol are solved.

Description

technical field [0001] The invention relates to the technical field of aviation communication, more specifically, it relates to a communication method for high-speed and reliable file transmission in air and ground. Background technique [0002] When the aircraft is in flight, the end-to-end transmission delay of the communication link between the airborne equipment and the ground peer is often high. For example, the end-to-end transmission delay of a maritime satellite link is as high as hundreds of milliseconds, and the round-trip communication delay can reach the second level. This situation makes the traditional "stop-and-wait" protocols that ensure end-to-end reliable transmission, such as the TCP protocol, unable to fully utilize the transmission capacity of the air-ground link. The reason is that the protocol can only achieve optimal throughput when the sender stops transmitting and sends enough data before waiting for the receiver to send back a message confirming t...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the low efficiency caused by TCP protocol file transmission in the high-delay air-ground link in the existing airborne equipment and ground-to-end communication process, and the problems that UDP protocol is easy to lose packets and easily cause network congestion, the present invention provides An air-to-ground high-speed and reliable file transfer communication method, which is a real-time file transfer protocol suitable for aircraft flight. When the aircraft stays on the ground, it can use "low-latency" networks, such as 4G, Wifi, etc.

Images