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Design and Evaluation of Ad Hoc Routing Protocol examines ad hoc communications between vehicles in a road environment. In this context, the book questions the sustainability of communications-dependent driver assistance services in areas where no communications infrastructure is operational. Starting with an ad hoc routing protocol proposed by the authors, this book presents a methodology from its design to its evaluation. It presents the functional requirements-based design approach and offers analyses to help us understand how the protocol functions, its properties and its performance in relation to target applications. This book is primarily aimed at beginners in the fields of protocol engineering, ad hoc networks or intelligent transport systems, but also provides specialists with an original perspective on the scientific literature in these fields. In particular, it offers concrete tools to help them develop their own methods for designing and evaluating communications protocols.
An ad hoc network is a group of mobile nodes that autonomously establish connectivity via multi-hop wireless links, without relying on any pre-configured network infrastructure. Traditional ad hoc routing protocols use a large number of routing packets to adapt to network changes, thereby reducing the amount of bandwidth left to carry data. Moreover, they route data packets along a single path from source to destination, which introduces considerable latency for recovery from a link failure along this path. Finally, they often use the minimum hop count as a basis for routing, which does not always guarantee a high throughput. This thesis presents AMPER (Ad hoc, Modular, Probabilistic, Enhanced Routing), an ad hoc routing protocol that minimizes the routing packet overhead, allows the use of alternate paths in the event of a link outage, and employs - without loss of generality - the expected number of transmissions to make forwarding decisions. Following the design of AMPER, ns-2 is used to simulate it, evaluate it and compare it to other ad hoc routing protocols.
This book constitutes the thoroughly refereed post-conference proceedings of the 9th International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2013, which was held in National Capital Region (NCR) of India during January 2013. The 87 revised full papers were carefully selected from 169 submissions and present the recent technological developments in broadband high-speed networks, peer-to-peer networks, and wireless and mobile networks.
The authoritative guide to the state of the art in ad hoc wireless networking. Reflects the field's latest breakthroughs Covers media access, routing, service discovery, multicasting, power conservation, transport protocol, and much more Includes a complete narration of prototype implementation with communication performance results from practical field trials Introduces key applications for home, business, auto, and defense "Ad hoc" wireless networks eliminate the complexities of infrastructure setup and administration, enabling devices to create and join networks "on the fly"-anywhere, anytime, for virtually any application. The field is rapidly coming of age, reflecting powerful advances in protocols, systems, and real-world implementation experience. In Ad Hoc Mobile Wireless Networks, one of the field's leading researchers brings together these advances in a single consolidated and comprehensive archive. C.K. Toh covers all this, and more: Key challenges: device heterogeneity, diverse traffic profiles, mobility, and power conservation Routing protocols for ad hoc networks, including Associativity Based Routing (ABR) and other IETF MANET protocols Real-world implementation issues-including a complete prototype implementation Ad hoc wireless network performance: results obtained from the latest field trials Leading approaches to service discovery Addressing TCP over an ad hoc wireless network environment Support for multicast communications The role of Bluetooth and WAP Ad Hoc Mobile Wireless Networks introduces detailed application scenarios ranging from home and car to office and battlefield. C.K. Toh also introduces several of the field's leading projects, from Motorola's PIANO platform to UC Berkeley's "Smart Dust." Whether you're a researcher, scientist, implementer, consultant, technical manager, CTO, or student, you won't find a more authoritative and comprehensive guide to the new state of the art in ad hoc networking.
"The flexibility of movement for the wireless ad hoc devices, referred to as node mobility, introduces challenges such as dynamic topological changes, increased frequency of route disconnections and high packet loss rate in Mobile Ad hoc Wireless Network (MANET) routing. This research proposes a novel on-demand routing protocol, Speed-Aware Routing Protocol (SARP) to mitigate the effects of high node mobility by reducing the frequency of route disconnections in a MANET. SARP identifies a highly mobile node which forms an unstable link by predicting the link expiration time (LET) for a transmitter and receiver pair. When the nodes have high relative velocity, the LET calculated is a small value; this means that the link is predicted to disconnect before the successful transmission of a specific demand. SARP omits such a packet-sending node from the link route during the route discovery phase. The omission of such unstable links helps SARP limit the flooding of control packets during route maintenance and reduces the overall control overhead generated in on-demand routing protocols. NS2 was used to implement the SARP with ad hoc on-demand vector (AODV) as the underlying routing algorithm. Extensive simulations were then conducted using Random Waypoint Mobility model to analyze the performance of SARP. The results from these simulations demonstrated that SARP reduced the overall control traffic of the underlying protocol AODV significantly in situations of high mobility and dense networks; in addition, it showed only a marginal difference as compared to AODV, in all aspects of quality-of-service (QOS) in situations of low mobility and sparse networks"--Abstract, leaf iii
In this book, the focus is on the analysis and design of efficient, adaptive, and scalable routing protocols for Mobile Ad Hoc Networks. Next section presents the objective of the work performed in the context of this book. The main objective of this book is to develop routing protocols, which are appropriate for challenging environment of mobile ad-hoc networks. Given the inherent characteristics of these networks, the solutions must be adaptable to dynamic topologies, efficient with the bandwidth usage, scalable and energy efficient when various network parameters are concerned. Moreover, the focus is also on realistic approaches having relevance in real-life deployments. This means that the protocols should not be designed merely based on generic assumptions, which could lead to incorrect conclusions. Network Simulator (ns2.34) is the tools, which are used to determine that the developed algorithms are implementable in real networks. For validation in ad hoc networks, a specific scenario should also be mentioned for which the routing protocol has been designed. Meeting of these objectives includes providing the perception of the realities of ad-hoc networking. In addition, the proposed solutions should be compared against corresponding solutions found in the literature. New solutions must offer better performance with respect to others, to be able to contribute something to the research community. To summarize, the main goal of this book is to improve the knowledge in ad-hoc networking by providing solutions, which can help in developing new features for MANETs. This book will give the details of the methodology employed to achieve the goals.