RELIABLE UDP OVER THE AIR TRANSFER IN DIGITAL RADIO SYSTEM

Juan Zhang, Hesong Jiang, Hong Jiang, Chunmei Chen

The Open Fund of Robot Technology Used for Special Environment Key Laboratory of Sichuan Province , School of Information Engineering, Southwest University of Science and Technology, Mianyang, China

Reliability is very important in digital radio point-to-point transmission system, especially for bulk data transfer in narrow band channel. Currently most applications are based on raw UDP service, which does not guarantee the reliability, and existing reliable UDP transfer protocols do not satisfy the performance expectations. The article presents R2UDP(Reduced Reliable UDP) over the air transfer suitable to radio system, SBACK (selective bundled ACK) and smart probe improves the transfer efficiency and saves the bandwidth, and also minimizes the impact of bulk data transfer to other traffic on the shared channel.