MAC and Routing Protocols for Multi-hop Wireless Networks - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook MAC and Routing Protocols for Multi-hop Wireless Networks write by Chih-Yuan Liao. This book was released on 2004. MAC and Routing Protocols for Multi-hop Wireless Networks available in PDF, EPUB and Kindle. Abstract: "Wireless systems for industry have mostly used cellular-phone-style radio links, using point-to-point or point-to-multipoint transmission. Past research has indicated that these network architectures are not suitable for several industrial applications because of their rigid structure, meticulous planning requirements, and dropped signals. In contrast, wireless mesh networks are multi-hop systems in which devices assist each other in transmitting packets through the network, and they provide a reliable, flexible system that can be extended to thousands of devices. Some inherent advantages with mesh networks are scalability, non line-of-sight communications, high data rates, and low-cost deployment. Mesh networks have been deployed by MIT researchers and a few companies on a small scale. Mesh networks have not been deployed widely, in part because of some fundamental problems with the current protocols with regards to QoS support and scalability. To meet these requirements, the MAC protocol should be able to guarantee near constant capacity for networks of different sizes, and the routing protocol should perform admission control. Current CSMA-based MAC protocols have been shown to perform inadequately in terms of throughput and scalability in multi-hop deployments. The key problem with using protocols like IEEE 802.11 is that the link throughput is affected severely due to the exposed terminal problem, uncoordinated contentions, and wasteful backoffs. With the 802.11 MAC protocol, our results show that the capacity falls to about 1/10th for a chain and below 1/20th for a grid with horizontal constant bit rate flows. We have developed the WisperNet MAC and routing protocols, which provide end-to-end QoS guarantees over a multi-hop mesh network. By exploiting the topology information and the fact that fixed wireless nodes separated by 3 hops or more can transmit simultaneously, we eliminate collisions and maximize network utilization. The WisperNet routing protocol performs admission control. We show that the WisperNet MAC protocol can guarantee up to 9 times more capacity than IEEE 802.11, and this capacity remains nearly constant as the network grows. Also included is a performance analysis of different routing policies, and their effect on network utilization."
Secure Routing and Medium Access Protocols in Wireless Multi-hop Networks
Secure Routing and Medium Access Protocols in Wireless Multi-hop Networks - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Secure Routing and Medium Access Protocols in Wireless Multi-hop Networks write by Soufiene Djahel. This book was released on 2011-10-28. Secure Routing and Medium Access Protocols in Wireless Multi-hop Networks available in PDF, EPUB and Kindle. Doctoral Thesis / Dissertation from the year 2011 in the subject Computer Science - Internet, New Technologies, Lille 1 University (Laboratoire d'Informatique Fondamentale de Lille), course: Security in Wireless Multi-hop Networks, language: English, abstract: While the rapid proliferation of mobile devices along with the tremendous growth of various applications using wireless multi-hop networks have significantly facilitate our human life, securing and ensuring high quality services of these networks are still a primary concern. In particular, anomalous protocol operation in wireless multi-hop networks has recently received considerable attention in the research community. These relevant security issues are fundamentally different from those of wireline networks due to the special characteristics of wireless multi-hop networks, such as the limited energy resources and the lack of centralized control. These issues are extremely hard to cope with due to the absence of trust relationships between the nodes. To enhance security in wireless multi-hop networks, this dissertation addresses both MAC and routing layers misbehaviors issues, with main focuses on thwarting black hole attack in proactive routing protocols like OLSR, and greedy behavior in IEEE 802.11 MAC protocol. Our contributions are briefly summarized as follows. As for black hole attack, we analyze two types of attack scenarios: one is launched at routing layer, and the other is cross layer. We then provide comprehensive analysis on the consequences of this attack and propose effective countermeasures. As for MAC layer misbehavior, we particularly study the adaptive greedy behavior in the context of Wireless Mesh Networks (WMNs) and propose FLSAC (Fuzzy Logic based scheme to Struggle against Adaptive Cheaters) to cope with it. A new characterization of the greedy behavior in Mobile Ad Hoc Networks (MANETs) is also introduced. Finally, we design a new backoff scheme to quickly detect the greedy nodes that do not comply with IEEE 802.11 MAC protocol, together with a reaction scheme that encourages the greedy nodes to become honest rather than punishing them.
Ad Hoc Mobile Wireless Networks
Ad Hoc Mobile Wireless Networks - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Ad Hoc Mobile Wireless Networks write by Subir Kumar Sarkar. This book was released on 2013-02-05. Ad Hoc Mobile Wireless Networks available in PDF, EPUB and Kindle. The military, the research community, emergency services, and industrial environments all rely on ad hoc mobile wireless networks because of their simple infrastructure and minimal central administration. Now in its second edition, Ad Hoc Mobile Wireless Networks: Principles, Protocols, and Applications explains the concepts, mechanism, design, and performance of these highly valued systems. Following an overview of wireless network fundamentals, the book explores MAC layer, routing, multicast, and transport layer protocols for ad hoc mobile wireless networks. Next, it examines quality of service and energy management systems. Additional chapters cover mobility models for multi-hop ad hoc wireless networks as well as cross-layer design issues. Exploring Bluetooth, IrDA (Infrared Data Association), HomeRF, WiFi, WiMax, Wireless Internet, and Mobile IP, the book contains appropriate examples and problems at the end of each chapter to illustrate each concept. This second edition has been completely updated with the latest technology and includes a new chapter on recent developments in the field, including sensor networks, personal area networks (PANs), smart dress, and vehicular ad hoc networks. Self-organized, self-configured, and self-controlled, ad hoc mobile wireless networks will continue to be valued for a range of applications, as they can be set up and deployed anywhere and anytime. This volume captures the current state of the field as well as upcoming challenges awaiting researchers.
Routing for Wireless Multi-Hop Networks
Routing for Wireless Multi-Hop Networks - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Routing for Wireless Multi-Hop Networks write by Sherin Abdel Hamid. This book was released on 2013-01-18. Routing for Wireless Multi-Hop Networks available in PDF, EPUB and Kindle. The focus of this brief is to identify what unifies and what distinguishes the routing functions in four wireless multi-hop network paradigms. The brief introduces a generic routing model that can be used as a foundation of wireless multi-hop routing protocol analysis and design. It demonstrates that such model can be adopted by any wireless multi-hop routing protocol. Also presented is a glimpse of the ideal wireless multi-hop routing protocol along with several open issues.
Multi-hop Ad Hoc Networks from Theory to Reality
Multi-hop Ad Hoc Networks from Theory to Reality - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Multi-hop Ad Hoc Networks from Theory to Reality write by Marco Conti. This book was released on 2007. Multi-hop Ad Hoc Networks from Theory to Reality available in PDF, EPUB and Kindle. Mobile Multi-hop Ad Hoc Networks are collections of mobile nodes connected together over a wireless medium. These nodes can freely and dynamically self-organise into arbitrary and temporary, "ad-hoc" network topologies, allowing people and devices to seamlessly internetwork in areas with no pre-existing communication infrastructure, (e.g., disaster recovery environments). The aim of this book is to present some of the most relevant results achieved by applying an experimental approach to the research on multi-hop ad hoc networks. The unique aspect of the book is to present measurements, experiences and lessons obtained by implementing ad hoc networks prototypes.
