Remote diagnostics between vehicles and via efficient UDT communication with a remote server

A data transmission system, comprising:

• a first vehicle diagnostic device, a second vehicle diagnostic device, and a remote diagnostic server, wherein the first vehicle diagnostic device and the second vehicle diagnostic device each comprise a processor, and each respectively establish communication connections with the remote diagnostic server through a user datagram protocol-based data transfer protocol (UDT);
• the first vehicle diagnostic device is configured for collecting vehicle monitoring data of a target vehicle;
• encapsulating the vehicle monitoring data of the target vehicle into a first UDT data packet;
• sending the first UDT data packet at a first target transmission rate corresponding to a first current congestion value, wherein the first current congestion value is determined based on a first current transmission delay between the first vehicle diagnostic device and the remote diagnostic server, a first current network state of the first vehicle diagnostic device, and a first current load capacity of the remote diagnostic server;
• receiving a second UDT data packet returned by the second vehicle diagnostic device based on the first UDT data packet, which is forwarded by the remote diagnostic server;
• and performing a vehicle maintenance operation on the target vehicle based on a vehicle diagnostic result of the target vehicle in the second UDT data packet and a vehicle maintenance plan corresponding to the vehicle diagnostic result;
• the remote diagnostic server is configured for receiving the first UDT data packet sent by the first vehicle diagnostic device and forwarding the first UDT data packet to the second vehicle diagnostic device;
• and receiving the second UDT data packet returned by the second vehicle diagnostic device and forwarding the second UDT data packet to the first vehicle diagnostic device;
• the second vehicle diagnostic device is configured for receiving the first UDT data packet forwarded by the remote diagnostic server;
• determining the vehicle diagnostic result of the target vehicle and the vehicle maintenance plan corresponding to the vehicle diagnostic result based on the vehicle monitoring data of the target vehicle in the first UDT data packet;
• encapsulating the vehicle diagnostic result of the target vehicle and the vehicle maintenance plan corresponding to the vehicle diagnostic result into the second UDT data packet;
• sending the second UDT data packet at a second target transmission rate corresponding to a second current congestion value, wherein the second current congestion value is determined based on a second current transmission delay between the second vehicle diagnostic device and the remote diagnostic server, a second current network state of the second vehicle diagnostic device, and a second current load capacity of the remote diagnostic server;
• and
• wherein the first vehicle diagnostic device performs vehicle maintenance operations on the target vehicle based on the received vehicle diagnostic result of the target vehicle and the vehicle maintenance plan corresponding to the vehicle diagnostic result.