Opportunistic networks allow mobile users to share information without any network infrastructure.This book is suitable for both undergraduates and postgraduates as it discusses various aspects of opportunistic networking including, foundations of ad hoc network; taxonomy of mobility models, etc.

A crucial step during the design and engineering of communication systems is the estimation of their performance and behavior; especially for mathematically complex or highly dynamic systems network simulation is particularly useful. This book focuses on tools, modeling principles and state-of-the art models for discrete-event based network simulations, the standard method applied today in academia and industry for performance evaluation of new network designs and architectures. The focus of the tools part is on two distinct simulations engines: OmNet++ and ns-3, while it also deals with issues like parallelization, software integration and hardware simulations. The parts dealing with modeling and models for network simulations are split into a wireless section and a section dealing with higher layers. The wireless section covers all essential modeling principles for dealing with physical layer, link layer and wireless channel behavior. In addition, detailed models for prominent wireless systems like IEEE 802.11 and IEEE 802.16 are presented. In the part on higher layers, classical modeling approaches for the network layer, the transport layer and the application layer are presented in addition to modeling approaches for peer-to-peer networks and topologies of networks. The modeling parts are accompanied with catalogues of model implementations for a large set of different simulation engines. The book is aimed at master students and PhD students of computer science and electrical engineering as well as at researchers and practitioners from academia and industry that are dealing with network simulation at any layer of the protocol stack.

This book contains the proceedings of the Third International Network Conference (INC 2002), which was held in Plymouth, UK, in July 2002. A total of 72 papers were accepted for inclusion in the conference, and they are presented here in 8 themed chapters. The main topics of the book include: Web Technologies and Applications; Network Technologies; Multimedia over IP; Quality of Service; Security and Privacy; Distributed Technologies; Mobility; and Applications and Impacts. The papers address state-of-the-art research and applications of network technology, arising from both the academic and industrial domains. The book should consequently be of interest to network practitioners, researchers, academics, and technical managers involved in the design, development and use of network systems.