Advances in Pervasive Computing and Networking

Advances in Pervasive Computing and Networking
Author: Boleslaw K. Szymanski
Publisher: Springer Science & Business Media
Total Pages: 285
Release: 2006-06-09
Genre: Computers
ISBN: 0387234667

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Pervasive Computing and Networking aim at providing ubiquitous, ever-present, adaptable, smart, enveloping and immersive environments in which computing components and humans can interact regardless of the location. The combination of an abundance of computational power of the processors and the communication bandwidth provided by the wireless and mobile networking everywhere and all the time makes such environments within the reach of current technology. Yet, to realize the full potential of such environments, many technical and economical challenges needs to be overcome. These challenges and the perspective on the seminal directions of the research in this area were the subject of the Workshop for Pervasive Computing and Networking at Rensselaer Polytechnic Institute, Troy, NY, USA. This book presents chapters based on presentations made at the workshop by leaders in the field. The scope of Advances in Pervasive Computing and Networking ranges from fundamental theory of pervasive computing and networking to crucial challenges and emerging applications. Such seminal topics as a scalable, self-organizing technology for sensor networks, the fundamental relationship between the achievable capacity and delay in mobile wireless networks, the role of self-optimization in sensor networks or similarities and differences between computer networks and their biological counterparts are the subject of the first group of chapters. The next group of chapters covers communication issues, such as cooperative communication in mobile, wireless and sensor networks, methods for maximizing aggregate throughput in 802.11 mesh networks with a physical carrier, and self-configuring location discovery systems for smart environments. The book closes with chapters focusing on sensor network emerging applications such as smart and safe buildings, a design for a distributed transmitter for reachback based on radar signals sensing and two-radio multi-channel clustering.

Cooperative Routing in Wireless Networks

Cooperative Routing in Wireless Networks
Author: Amir Ehsan Khandani
Publisher:
Total Pages: 89
Release: 2004
Genre:
ISBN:

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In this thesis, we study the problem of energy efficiency and reliability in wireless ad-hoc networks. First, we introduce the idea of wireless cooperation advantage. We formulate the problem of finding the minimum energy cooperative route for a wireless network under idealized channel and receiver models. Fundamental to the understanding of the routing problem is the understanding of the optimal power allocation for a single message transmission between two sets of nodes. We present the solution to this problem, and use that as the basis for solving the minimum energy cooperative routing problem. We analytically obtain the energy savings in regular line and regular grid networks. We propose heuristics for selecting the cooperative route in random networks and give simulation results confirming significant energy savings achieved through cooperation. In the second part, we study the problem of route reliability in a multi-hop network. We look at the reliability issue at the link level and extend those result to a wireless network setting. In the network setting, we first define and analyze the reliability for a fixed route and then propose algorithms for finding the optimal route between a source-destination pair of nodes. The relationship between the route reliability and consumed power is studied. The idea of route diversity is introduced as a way to improve the reliability by taking advantage of the broadcast property, the independence of fading state between different pairs of nodes, and space diversity created by multiple intermediate relay nodes along the route. We give analytical results on improvements due to route diversity in some simple network topologies.

Energy Efficient Cooperative Wireless Communication and Networks

Energy Efficient Cooperative Wireless Communication and Networks
Author: Zhengguo Sheng
Publisher: CRC Press
Total Pages: 216
Release: 2014-11-11
Genre: Computers
ISBN: 1482238225

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Compared with conventional communications, cooperative communication allows multiple users in a wireless network to coordinate their packet transmissions and share each other's resources, thus achieving high-performance gain and better service coverage and reliability. Energy Efficient Cooperative Wireless Communication and Networks provides a comp

Cooperative Communication In Wireless Networks

Cooperative Communication In Wireless Networks
Author: Shah A. F. M. Shahen
Publisher: LAP Lambert Academic Publishing
Total Pages: 80
Release: 2013
Genre:
ISBN: 9783659341281

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Cooperative communication allows several nodes to cooperatively transmit signals to a particular destination. Using cooperative communication, wireless networks could mitigate severe channel impairments arising from multipath propagation. In this case, the greater benefits are gained by exploiting spatial diversity in the channel. In this book, an overview on cooperative communication in wireless networks is presented. Practical issues and challenges in cooperative communication are identified. Cooperative routing strategies in different networks (wireless mesh networks, ad hoc networks and wireless sensor networks) are discussed. However, cooperative routing strategy in a network with multiple flows may cause collision among helping nodes and thus, reduce the overall system performance. In this book, a new routing protocol based on new routing metric called Contention Sensitive Cooperative Metric (CSCM) is discussed, which takes contention relationship into consideration. Finally, the performance of the routing protocol has been evaluated using simulation. The results demonstrate significant performance improvement of cooperative communication while using CSCM.

Performance Analysis of Cooperative Networking with Multi Channels

Performance Analysis of Cooperative Networking with Multi Channels
Author: Praveen Kumar Devulapalli
Publisher: CRC Press
Total Pages: 123
Release: 2024-07-18
Genre: Computers
ISBN: 1040051561

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This book covers wireless cooperative communication and advanced communication techniques for research scholars and post-graduate students. Features: • This book will be the reference book for cooperative communication. • It addresses the problems in small-scale cooperative communication. • It presents cooperative routing algorithms for large-scale cooperative networks with the constraint of throughput and transmission time. • It presents energy- efficient transmission approach by making use of multiple radio terminals. • It presents adaptive routing algorithm for large-scale cooperative network under mobility environment.

Cooperative Routing in Multi-Radio Multi-Hop Wireless Network

Cooperative Routing in Multi-Radio Multi-Hop Wireless Network
Author: Kun Xie
Publisher:
Total Pages:
Release: 2017
Genre: Computers
ISBN:

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There are many recent interests on cooperative communication (CC) in wireless networks. Despite the large capacity gain of CC in small wireless networks, CC can result in severe interference in large networks and even degraded throughput. The aim of this chapter is to concurrently exploit multi-radio and multi-channel (MRMC) and CC technique to combat co-channel interference and improve the performance of multi-hop wireless network. Our proposed solution concurrently considers cooperative routing, channel assignment, and relay selection and takes advantage of both MRMC technique and spatial diversity to improve the throughput. We propose two important metrics, contention-aware channel utilization routing metric (CACU) to capture the interference cost from both direct and cooperative transmission, and traffic aware channel condition metric (TACC) to evaluate the channel load condition. Based on these metrics, we propose three algorithms for interference-aware cooperative routing, local channel adjustment, and local path and relay adaptation, respectively, to ensure high-performance communications in dynamic wireless networks. Our algorithms are fully distributed and can effectively mitigate co-channel interference and achieve cooperative diversity gain. To our best knowledge, this is the first distributed solution that supports CC in MRMC networks. Our performance studies demonstrate that our algorithms can significantly increase the aggregate throughput.

Cooperative Wireless Communications

Cooperative Wireless Communications
Author: Yan Zhang
Publisher: CRC Press
Total Pages: 518
Release: 2009-03-10
Genre: Computers
ISBN: 1420064703

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Cooperative devices and mechanisms are increasingly important to enhance the performance of wireless communications and networks, with their ability to decrease power consumption and packet loss rate and increase system capacity, computation, and network resilience. Considering the wide range of applications, strategies, and benefits associated wit