Communication protocol in the field using radio links

摘要

The protocol described is designed for measurement, monitoring and control distributed systems in the field. It is a simple protocol, with reduced overhead, designed for stations with reduced intelligence level, using radio links. The protocol has elements situated in the levels 1, 2 and 7 of the OSI architecture. The level 7 service primitives implement functions specific for process monitoring and control and are all confirmed. They work on data objects as variables, domains, programs and events. The following topics are discussed: protocol structure, protocol efficiency, message optimal length, waiting queues length. An application of this protocol is shortly presented.