Data transmission by automatic frequency control for automatically selecting optimal data transmission rate between data sending end and mobile phone destination

摘要

The communication speeds are equalized between the sending and receiving ends to ensure correct communication, 1, a transmission protocol is set to determine an optimal transmission baud rate for sending, 2, the baud rate is gauged and is reset as the transmission protocol value, 3 and a test package is sent to the receiving end, 4. It is checked if transmission was successful, 5 and data transmission is started if it was, 6, otherwise steps 3-6 are repeated.