Protocol Engineering

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Communication protocols are essential for the operation of computer networks and telecommunication systems, defining how these systems interact, the order of interactions, and data formats. Protocol Engineering encompasses the design, validation, and implementation of these protocols. The first part of the book covers the fundamentals, explaining key concepts such as service, protocol, layer, and layered architecture, and introduces essential elements for protocol description using a model language. It also outlines crucial protocol functions. Part II focuses on the description of communication protocols, presenting various formal methods central to Protocol Engineering. The author discusses fundamental description methods, including finite state machines, Petri nets, process calculi, and temporal logics, which serve as semantic models for formal techniques. Representative techniques like SDL and LOTOS are introduced, along with a survey of UML for protocol description. Part III examines the protocol life cycle and development stages, offering systematic design approaches, verification methods, implementation techniques, and testing strategies, particularly conformance and interoperability tests using the test description language TTCN. Throughout the book, the XDT (eXample Data Transfer) protocol serves as a reference to illustrate description techniques and validation approaches. This work is aimed at undergraduate and gr