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Author: Publisher: ISBN: Category : Computer science Languages : en Pages : 137
Book Description
Mobile Ad hoc Networks (MANETs) are of much interest to both the research community and the military because of the potential to establish a communication network in any situation that involves emergencies. Examples are search-and-rescue operations, military deployment in hostile environment, and several types of police operations. One critical open issue is how to route messages considering the characteristics of these networks. The nodes act as routers in an environment without a fixed infrastructure, the nodes are mobile, the wireless medium has its own limitations compared to wired networks, and existing routing protocols cannot be employed at least without modifications. Over the last few years, a number of routing protocols have been proposed and enhanced to solve routing in MANETs. It is not clear how those different protocols perform under different environments. One protocol may be the best in one network configuration but the worst in another. This thesis describes a study of those protocols that are best from a DoD perspective. These wireless mobile networks were simulated under different mobility and traffic scenarios to evaluate their performance. The results showed which protocols performed better under several relevant scenarios and exposed a number of design flaws.
Author: Publisher: ISBN: Category : Computer science Languages : en Pages : 137
Book Description
Mobile Ad hoc Networks (MANETs) are of much interest to both the research community and the military because of the potential to establish a communication network in any situation that involves emergencies. Examples are search-and-rescue operations, military deployment in hostile environment, and several types of police operations. One critical open issue is how to route messages considering the characteristics of these networks. The nodes act as routers in an environment without a fixed infrastructure, the nodes are mobile, the wireless medium has its own limitations compared to wired networks, and existing routing protocols cannot be employed at least without modifications. Over the last few years, a number of routing protocols have been proposed and enhanced to solve routing in MANETs. It is not clear how those different protocols perform under different environments. One protocol may be the best in one network configuration but the worst in another. This thesis describes a study of those protocols that are best from a DoD perspective. These wireless mobile networks were simulated under different mobility and traffic scenarios to evaluate their performance. The results showed which protocols performed better under several relevant scenarios and exposed a number of design flaws.
Author: Daniel Lang Publisher: VDM Publishing ISBN: 9783836469081 Category : Languages : en Pages : 0
Book Description
A Mobile Ad Hoc Network (MANET) is a mobile, wireless network that does not necessitate a pre-existing infrastructure. The routing infrastructure needs to be established in a distributed, self-organized way. Many routing protocols for MANETs have been proposed, and some evaluating work has been conducted. The large number of the proposed routing protocols and evaluations makes it difficult to keep track of the development and to get an overview of the strengths and weaknesses of routing protocols. The author Daniel Lang analyses evaluation techniques from the past and describes common problems with simulation based evaluation of routing protocols for MANETs and how to resolve them. Simulation scenarios are examined and evaluated, sample applications are suggested and relations to past and present evaluations are drawn. A comprehensive number of MANET routing protocols is examined and categorized and similarities are deduced and presented. It is proposed that these can be used to reduce the number of experiments. This book is targeted at scientists and institutions conducting research about or pursuing the implementation of Mobile Ad Hoc Networks.
Author: Lee K. Thong Publisher: ISBN: 9781423521266 Category : Languages : en Pages : 153
Book Description
This thesis presents a simulation and performance evaluation analysis of the various routing protocols that have been proposed for the Mobile Ad Hoc Network (MANET) environment using the Network Simulator-2 (NS-2) tool. Many routing protocols have been proposed by the academic communities for possible practical implementation of a MANET in military, governmental and commercial environments. Four (4) such routing protocols were chosen for analysis and evaluation: Ad Hoc On-demand Distance Vector routing (AODV), Dynamic Source Routing (DSR), Destination-Sequenced Distance Vector routing (DSDV) and Optimized Link State Routing (OLSR). NS-2 is developed and maintained by the University of Southern California's Information Sciences Institute (ISI). Leveraging on NS-2 s simulation capabilities, the key performance indicators of the routing protocols were analyzed such as data network throughput, routing overhead generation, data delivery delay as well as energy efficiency or optimization. The last metric is explored, especially due to its relevance to the mobile environment. Energy is a scare commodity in a mobile ad hoc environment. Any routing software that attempts to minimize energy usage will prolong the livelihood of the devices used in the battlefield. Three important mobility models are considered, namely, Random Waypoint, Manhattan Grid, and Reference Point Group Mobility. The application of these three models will enhance the realism of simulation to actual real life mobility in an urban or military setup scenario. The performance of the routing protocols in varied node density, mobility speed as well as loading conditions have been studied. The results of the simulation will provide invaluable insights to the performance of the selected routing protocols. This can serve as a deciding factor for the U.S. Department of Defense (DoD) in their selection of the most suitable routing protocols tailored to their specific needs.
Author: Sv Naina Publisher: ISBN: 9781805271338 Category : Languages : en Pages : 0
Book Description
Over the past decade, there has been an emerging interest in wireless networks, as the cost of mobile devices have increased. Wireless communication has witnessed more rapid growth worldwide compared to its conventional wired counterpart in the past decades due to the volatile use of mobile equipment such as I phones, Smart phones, laptops, etc., and an increase in connection speed. Since its primary introduction, a number of technologies have emerged to improve the experience of wireless communications among which mobile ad hoc network (MANET) is an alternative (e.g., WiMAX, WLAN and Wi-Fi).
Author: Maria Carla Calzarossa Publisher: Springer ISBN: 3540457984 Category : Computers Languages : en Pages : 509
Book Description
This book presents the tutorial lectures given by leading experts in the area at the IFIP WG 7.3 International Symposium on Computer Modeling, Measurement and Evaluation, Performance 2002, held in Rome, Italy in September 2002.The survey papers presented are devoted to theoretical and methodological advances in performance and reliability evaluation as well as new perspectives in the major application fields. Modeling and verification issues, solution methods, workload characterization, and benchmarking are addressed from the methodological point of view. Among the applications dealt with are hardware and software architectures, wired and wireless networks, grid environments, Web services, and real-time voice and video processing.This book is intended to serve as a state-of-the-art survey and reference for students, scientists, and engineers active in the area of performance and reliability evaluation.
Author: Sudip Misra Publisher: Springer Science & Business Media ISBN: 1848003285 Category : Computers Languages : en Pages : 581
Book Description
Overview and Goals Wireless communication technologies are undergoing rapid advancements. The past few years have experienced a steep growth in research in the area of wireless ad hoc networks. The attractiveness of ad hoc networks, in general, is attributed to their characteristics/features such as ability for infrastructure-less setup, minimal or no reliance on network planning and the ability of the nodes to self-organize and self-configure without the involvement of a centralized n- work manager, router, access point or a switch. These features help to set up a network fast in situations where there is no existing network setup or in times when setting up a fixed infrastructure network is considered infeasible, for example, in times of emergency or during relief operations. Even though ad hoc networks have emerged to be attractive and they hold great promises for our future, there are several challenges that need to be addressed. Some of the well-known challenges are attributed to issues relating to scalability, quality-of-service, energy efficiency and security.
Author: Matthew J. Prokop Publisher: ISBN: Category : Routing protocols (Computer network protocols) Languages : en Pages : 98
Book Description
"A Vehicular Ad-hoc Networks (VANET) is an area of wireless technologies that are attracting a great deal of interest. There are still several areas of VANETS, such as medium access control, security and routing protocols, that lack large amounts of research. There is also a lack of freely available simulators that can quickly and accurately simulate VANETs. One of the two main goals of this thesis was to develop a freely available VANET simulator and to evaluate popular mobile ad-hoc network routing protocols in several VANET scenarios. The VANET simulator consisted of a network simulator, a traffic (mobility simulator) and used a client-server application to keep the two simulators in sync. The VANET simulator also models buildings in order to create a more realistic wireless network environment. The second main goal of this thesis was to provide an evaluation of the routing protocols that are commonly used in mobile ad-hoc networks, which will apply to VANETs. Ad-Hoc Distance Vector routing (AODV), Dynamic Source Routing (DSR) and Dynamic MANET On-demand (DYMO) were initially simulated in a city, country, and highway environment in order to provide an overall evaluation."--Abstract.
Author: Andres Medina Publisher: ISBN: 9781124479774 Category : Ad hoc networks (Computer networks) Languages : en Pages :
Book Description
Mobile wireless ad-hoc networks (MANETs) are being designed to be a key element in future battlefield communications, as well as a supplement to cellular networks. As a consequence of rapid changes in the topology of the network, routing packets in MANETs is a challenging task that has attracted considerable attention. However a comprehensive performance evaluation of routing protocols remains an open problem. This dissertation proposes a novel methodology for the performance evaluation of routing protocols for MANETs. The method is based on a "Divide and Conquer" approach and it provides a systematic and disciplined way to evaluate the performance of routing protocols. The full routing system is decomposed into components (subsystems). Performance models are developed for each component. Then, the performance model of the full system is the interconnection of the performance models of the components. The component based approach makes practical the performance evaluation of routing protocols, by allowing researchers to reuse a subset of the previous developed models to evaluate the performance of new ideas.
Author: 
Author: 
Author: Daniel Lang
Author: Anil Kumar Mandala
Author: Lee K. Thong
Author: Sv Naina
Author: Maria Carla Calzarossa
Author: Sudip Misra
Author: Mohd Imran
Author: Matthew J. Prokop
Author: Andres Medina