Mobile Ad Hoc Networks

Guiding readers through the basics of these rapidly emerging networks to more advanced concepts and future expectations, Mobile Ad hoc Networks: Current Status and Future Trends identifies and examines the most pressing research issues in Mobile Ad hoc Networks (MANETs). Containing the contributions of leading researchers, industry professionals, and academics, this forward-looking reference provides an authoritative perspective of the state of the art in MANETs. The book includes surveys of recent publications that investigate key areas of interest such as limited resources and the mobility of mobile nodes. It considers routing, multicast, energy, security, channel assignment, and ensuring quality of service. Also suitable as a text for graduate students, the book is organized into three sections: Fundamentals of MANET Modeling and Simulation—Describes how MANETs operate and perform through simulations and models Communication Protocols of MANETs—Presents cutting-edge research on key issues, including MAC layer issues and routing in high mobility Future Networks Inspired By MANETs—Tackles open research issues and emerging trends Illustrating the role MANETs are likely to play in future networks, this book supplies the foundation and insight you will need to make your own contributions to the field. It includes coverage of routing protocols, modeling and simulations tools, intelligent optimization techniques to multicriteria routing, security issues in FHAMIPv6, connecting moving smart objects to the Internet, underwater sensor networks, wireless mesh network architecture and protocols, adaptive routing provision using Bayesian inference, and adaptive flow control in transport layer using genetic algorithms

Mobile Ad Hoc Networks

Guiding readers through the basics of these rapidly emerging networks to more advanced concepts and future expectations, Mobile Ad hoc Networks: Current Status and Future Trends identifies and examines the most pressing research issues in Mobile Ad hoc Networks (MANETs). Containing the contributions of leading researchers, industry professionals, and academics, this forward-looking reference provides an authoritative perspective of the state of the art in MANETs. The book includes surveys of recent publications that investigate key areas of interest such as limited resources and the mobility of mobile nodes. It considers routing, multicast, energy, security, channel assignment, and ensuring quality of service. Also suitable as a text for graduate students, the book is organized into three sections: Fundamentals of MANET Modeling and Simulation—Describes how MANETs operate and perform through simulations and models Communication Protocols of MANETs—Presents cutting-edge research on key issues, including MAC layer issues and routing in high mobility Future Networks Inspired By MANETs—Tackles open research issues and emerging trends Illustrating the role MANETs are likely to play in future networks, this book supplies the foundation and insight you will need to make your own contributions to the field. It includes coverage of routing protocols, modeling and simulations tools, intelligent optimization techniques to multicriteria routing, security issues in FHAMIPv6, connecting moving smart objects to the Internet, underwater sensor networks, wireless mesh network architecture and protocols, adaptive routing provision using Bayesian inference, and adaptive flow control in transport layer using genetic algorithms

Exploiting the power of multiplicity: a holistic survey of network-layer multipath

The Internet is inherently a multipath network: For an underlying network with only a single path, connecting various nodes would have been debilitatingly fragile. Unfortunately, traditional Internet technologies have been designed around the restrictive assumption of a single working path between a source and a destination. The lack of native multipath support constrains network performance even as the underlying network is richly connected and has redundant multiple paths. Computer networks can exploit the power of multiplicity, through which a diverse collection of paths is resource pooled as a single resource, to unlock the inherent redundancy of the Internet. This opens up a new vista of opportunities, promising increased throughput (through concurrent usage of multiple paths) and increased reliability and fault tolerance (through the use of multiple paths in backup/redundant arrangements). There are many emerging trends in networking that signify that the Internet's future will be multipath, including the use of multipath technology in data center computing; the ready availability of multiple heterogeneous radio interfaces in wireless (such as Wi-Fi and cellular) in wireless devices; ubiquity of mobile devices that are multihomed with heterogeneous access networks; and the development and standardization of multipath transport protocols such as multipath TCP. The aim of this paper is to provide a comprehensive survey of the literature on network-layer multipath solutions. We will present a detailed investigation of two important design issues, namely, the control plane problem of how to compute and select the routes and the data plane problem of how to split the flow on the computed paths. The main contribution of this paper is a systematic articulation of the main design issues in network-layer multipath routing along with a broad-ranging survey of the vast literature on network-layer multipathing. We also highlight open issues and identify directions for future work

Intelligent Approaches for Routing Protocols In Cognitive Ad-Hoc Networks

This dissertation describes the CogNet architecture and five cognitive routing protocols designed to function within this architecture. In this document, I first provide detailed modeling and analysis of CogNet architecture and then provide the detailed approach, mathematical analysis, and simulation results for each of the developed cognitive routing protocols. The fundamental idea for these cognitive routing protocols is that a proper and adaptive network topology should be constructed from network nodes based on predictions using cognitive functions and past experience. The nodes in the cognitive radio network employ machine learning techniques to use past experience and make wise decisions by predicting future network conditions. The cognitive protocol architecture is a cross-layer optimized construct where the lower layer knowledge of the wireless medium is shared with the network layer. This dissertation investigates several intelligent approaches for cognitive routing protocols, such as the multi-channel optimized approach, the scalability optimized cognitive approach, the multi-path optimized approach, and the mobility optimized approach. Analytical and simulation results demonstrate that network performance can be increased significantly by applying cognitive routing protocols

A Survey On Hybrid Routing Protocols In MANETS

Mobile Ad hoc NETwork (MANET) is a collection of mobile nodes that are arbitrarily located so that the interconnections between nodes are dynamically changing. A routing protocol is used to find routes between mobile nodes to facilitate communication wi thin the network. The main goal of such an ad hoc network routing protocol is to establish correct and efficient route between a pair of mobile nodes. Route should be discovered and maintained with a minimum of overhead and bandwidth consumption. There are number of routing protocols were proposed for ad hoc networks. T he objective of this paper is to create a taxonomy of the ad hoc hybrid routing protocols, and to survey and comp are each type of hybrid protocols. We try to show the requirements considered by the different hybrid protocols, the resource limitations under which they operate, and the design decisions made by the author

Topics on modelling and simulation of wireless networking protocols

The use of computer simulation to study complex systems has grown significantly over the past several decades. This is especially true with regard to computer networks, where simulation has become a widespread tool used in academic, commercial and military applications. Computer model representations of communication protocol stacks are used to replicate and predict the behavior of real world counterparts to solve a variety of problems.The performance of simulators, measured in both accuracy of results and run time, is a constant concern to simulation users. The running time for high delity simulation of large-scale mobile ad hoc networks can be prohibitively high. The execution time of propagation e ects calculations for a single transmission alone can grow unmanageable to account for all potential receivers. Discrete event simulators can also su er from excessive generation and processing of events, both due to network size and model complexity. In this thesis, three levels of abstracting the Institute of Electrical and Electronics Engineers (IEEE) 802.11 Request to Send/Clear to Send (RTS/CTS) channel access mechanism are presented. In the process of assessing the abstractions' ability to mitigate runtimecost while retaining comparable results to that of a commercially available simulator, OPNET, the abstractions were found to be better suited to collecting one metric over another.Performance issues aside, simulation is an ideal choice for use in prototyping and developing protocols. The costs of simulation are orders of magnitude smaller than that of network testbeds, especially after factoring in the logistics, maintenance, and space required to test live networks. For instance, Internet Protocol version 6 (IPv6) stateless address autocon guration protocols have yet to be convincingly shown to cope with the dynamic, infrastructure-free environment of Mobile Ad hoc Networks (MANETs). This thesis provides a literature survey of autocon guration schemes designed for MANETs, with particular focus on a stateless autocon guration scheme by Jelger andNoel (SECON 2005). The selected scheme provides globally routable IPv6 pre xes to a MANET attached to the Internet via gateways. Using OPNET simulation, the Jelger-Noel scheme is examined with new cluster mobility models, added gateway mobility, and varied network sizes. Performance of the Jelger-Noel scheme, derived from overhead, autocon gura ion time and pre x stability metrics, was found to be highly dependent on network density, and suggested further re nement before deployment.Finally, in cases where a network testbed is used to test protocols, it is still advantageous to run simulations in parallel. While testbeds can help expose design aws due to code or hardware di erences, discrete event simulation environments can o er extensive debugging capabilities andevent control. The two tools provide independent methods of validating the performance of protocols, as well as providing useful feedback on correct protocol implementation and con guration. This thesis presents the Open Shortest Path First (OSPF) routing protocol and its MANET extensions as candidate protocols to test in simulated and emulated MANETs. The measured OSPF overhead from both environments was used as a benchmark to construct equivalent MANET representations and protocol con guration, made particularly challenging due to the wired nature of the emulation testbed. While attempting to duplicate and validate results of a previous OSPF study, limitations of the simulated implementation of OSPF were revealed.M.S., Electrical Engineering -- Drexel University, 200