Routing for Wireless Multi-Hop Networks


Book Description

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.




Wireless Mesh Networks


Book Description

This book collects articles featuring recent advances in the theory and applications of wireless mesh networking technology. The contributed articles, from the leading experts in the field, cover both theoretical concepts and system-level implementation issues. The book starts with the essential background on the basic concepts and architectures of wireless mesh networking and then presents advanced level materials in a step-by-step fashion.




Load and Interference Aware Routing Metric for Wlan Mesh Networks


Book Description

Wireless Mesh Networks recently attract significant interests due to the minimal infrastructure demands and their potential for supporting mobile and pervasive computing. This work introduces a routing scheme to find best performance routes in WLAN mesh networks. A cross-layer approach is used to overcome self-interference issue of existing load-aware routing metrics. The proposed routing metric was evaluated on a multi-hop wireless emulator which allows us to emulate wireless networks on a wired testbed. Design and implementation of AEROMAN (Architecture to Evaluate Routing Protocols for Multi-hop Ad-hoc Networks) used in the emulator are presented. AEROMAN is the first, to the best of our knowledge, fully distributed approach taking into account properties of contention-based media access for wireless channel, and does not require any special hardware to emulate wireless channel.




Multihop Wireless Networks


Book Description

This book provides an introduction to opportunistic routing an emerging technology designed to improve the packet forwarding reliability, network capacity and energy efficiency of multihop wireless networks This book presents a comprehensive background to the technological challenges lying behind opportunistic routing. The authors cover many fundamental research issues for this new concept, including the basic principles, performance limit and performance improvement of opportunistic routing compared to traditional routing, energy efficiency and distributed opportunistic routing protocol design, geographic opportunistic routing, opportunistic broadcasting, and security issues associated with opportunistic routing, etc. Furthermore, the authors discuss technologies such as multi-rate, multi-channel, multi-radio wireless communications, energy detection, channel measurement, etc. The book brings together all the new results on this topic in a systematic, coherent and unified presentation and provides a much needed comprehensive introduction to this topic. Key Features: Addresses opportunistic routing, an emerging technology designed to improve the packet forwarding reliability, network capacity and energy efficiency of multihop wireless networks Discusses the technological challenges lying behind this new technology, and covers a wide range of practical implementation issues Explores many fundamental research issues for this new concept, including the basic principles of opportunistic routing, performance limits and performance improvement, and compares them to traditional routing (e.g. energy efficiency and distributed opportunistic routing protocol design, broadcasting, and security issues) Covers technologies such as multi-rate, multi-channel, multi-radio wireless communications, energy detection, channel measurement, etc. This book provides an invaluable reference for researchers working in the field of wireless networks and wireless communications, and Wireless professionals. Graduate students will also find this book of interest.




Multi-hop Routing for Wireless Mesh Networks


Book Description

Wireless Mesh networks have the potential to provide inexpensive and quick access to the internet for military communications, surveillance, education, healthcare and disaster management. This work caters to the growing high-bandwidth demands by providing low delay and high throughput by designing efficient, robust routing algorithms for wireless mesh networks. Chapters 2 and 3 of this dissertation describe adaptive routing algorithms that opportunistically route the packets in the absence of reliable knowledge about channel statistics and the network model. We design two adaptive routing algorithms, Distributed Opportunistic Routing (d-AdaptOR) and No Regret Routing (NRR), which minimize the expected number of transmissions and thus improving the throughput. The remainder of the dissertation concerns with the design routing algorithms to avoid congestion in the network. In Chapter 4, we describe a Distributed Opportunistic Routing algorithm with Congestion Diversity (ORCD) which employs receiver diversity and minimizes end-end delay. In Chapter 5, we present the Congestion Diversity Protocol (CDP), a distributed routing protocol for 802.11-based multi-hop wireless networks that combines important aspects of shortest-path and back-pressure routing to achieve improved end-end delay performance. This work reports on a practical (hardware and software) implementation of CDP in an indoor Wi-Fi testbed.




Advanced Routing Protocols for Wireless Networks


Book Description

This text introduces the principles of routing protocols and metrics as they affect wireless networking environments, specifically in urban areas. Timely because of the recent rise in small city life, this topic includes the consideration of ad hoc, mesh, vehicular, sensor, and delay tolerant networks. These approaches are each unique, and author Miguel Mitre Campista provides a thorough, but accessible, explanation of their individual characteristics for engineers, computer scientists, IT professionals, and curious Internet users.




Guide to Wireless Sensor Networks


Book Description

Overview and Goals Wireless communication technologies are undergoing rapid advancements. The last few years have experienced a steep growth in research in the area of wireless sensor networks (WSNs). In WSNs, communication takes place with the help of spatially distributedautonomoussensornodesequippedtosensespeci?cinformation. WSNs, especially the ones that have gained much popularity in the recent years, are, ty- cally, ad hoc in nature and they inherit many characteristics/features of wireless ad hoc networks such as the ability for infrastructure-less setup, minimal or no reliance on network planning, and the ability of the nodes to self-organize and self-con?gure without the involvement of a centralized network manager, router, access point, or a switch. These features help to set up WSNs fast in situations where there is no existing network setup or in times when setting up a ?xed infrastructure network is considered infeasible, for example, in times of emergency or during relief - erations. WSNs ?nd a variety of applications in both the military and the civilian population worldwide such as in cases of enemy intrusion in the battle?eld, object tracking, habitat monitoring, patient monitoring, ?re detection, and so on. Even though sensor 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 coverage and deployment, scalability, quality-of-service, size, computational power, energy ef?ciency, and security.