An embedded wireless transmission system based on the extended user datagram protocol (EUDP)

As the application of embedded wireless communication system spreads fast in many fields, it is becoming a significant problem to obtain both high speed and reliability during the transmission of large amounts of data. This paper extends the traditional UDP protocol by adding the mechanism of package sequencing and accumulative retransmission, so as to combine the speed of UDP protocol and the reliability of the extended upper protocol and build an embedded system for transmitting large amounts of data quickly and reliably. The system is designed based on STM32 microcontroller and wireless module. Through the General Packet Radio Service (GPRS), the system can communicate both data and instructions with the remote control center via Internet. Experimental results reveal that the extended UDP protocol (EUDP) reduces the transmission delay significantly compared with the usual TCP protocol, while ensuring a considerable degree of reliability. Thus the system is ideal for transmitting large amounts of data in real time.