Load Balancing and Resource Reservation in Mobile Ad-hoc Networks PDF Download
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Author: Gautam Chakrabarti
Publisher:
ISBN:
Category : Mobile communication systems
Languages : en
Pages : 118
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Book Description
Author: Gautam Chakrabarti
Publisher:
ISBN:
Category : Mobile communication systems
Languages : en
Pages : 118
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Book Description
Author: Bora Karaoglu
Publisher:
ISBN:
Category :
Languages : en
Pages : 274
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Book Description
"Efficient use of the resources in mobile ad hoc networks (MANETs) is of great importance to maintain the required quality of service and to prolong the network lifetime. The utilization of the resources such as bandwidth and energy depends on a number of conditions such as network size, node density, and load distribution. These conditions are uncontrollable and often vary throughout the operation of the network. In order to efficiently use the resources, the protocols that determine the behavior of the network should dynamically adapt to these changing conditions. My thesis is that a protocol architecture for MANETs that dynamically adapts to changing conditions based on cooperation and information sharing leads to more efficient use of the system resources compared to competition based architectures. In particular, in this dissertation we explore the benefits of adaptation based on cooperation and information sharing at the medium access control (MAC) and network (routing) layers of the protocol stack. At the MAC layer, we develop an analytical model that reflects the relationships between protocol parameters and the overall performance of the protocol under various network conditions. This model reveals that the protocol parameters at the MAC layer can be adjusted to make best use of the channel resources depending on the application requirements and network conditions obtained through information sharing, such as average network load density. In order to provide a dynamic system that adapts not only to changing conditions but also to spatially non-uniform traffic load distributions, a lightweight dynamic channel allocation algorithm and a cooperative load balancing algorithm that facilitate efficient use of resources based on local information sharing are proposed. Through extensive simulations, we show that both dynamic channel allocation and cooperative load balancing improve the bandwidth efficiency under non-uniform load distributions compared with protocols that do not use these mechanisms as well as compared with the IEEE 802.11 uncoordinated protocol. Properly routing the data over a MANET is another challenging topic due to the dynamic behavior of the network, yet it is also crucial in terms of efficient use of resources. Two important routing schemes, network-wide broadcasting and multicasting, are investigated for trade-offs and merged into a single framework. The framework allows the selection of the optimal routing scheme based on the network conditions obtained through information sharing, leading to the best use of the system resources in terms of spectrum efficiency and energy efficiency. The interaction of a network with other networks coexisting at the same site also strongly determines its efficiency. We developed an approach for symbiotic networking using hybrid nodes, and our results clearly show that symbiotic networking can provide vital support to co-located networks, which is especially important in resource-constrained networks such as MANETs. Although theoretical analysis and simulations are efficient tools to comparatively evaluate the efficiency of different protocols, they cannot reflect many of the challenges for real implementation of these protocols, such as clock-drift, synchronization, imperfect physical layers, and interference from devices outside of the system. In order to prove the feasibility of the MAC and Network layer algorithms proposed in this thesis, a working prototype system that incorporates these algorithms is implemented on the Microsoft Research's SORA software defined radio (SDR) platform. The experiments with the prototype system show not only the viability of real time communications but also show the resilience of the system against interference. To sum up, a variety of methods ranging from MAC layer techniques for optimal spatial reuse and dynamic channel allocation, to network layer techniques for optimal data dissemination schemes and symbiotic interactions with co-located networks are described in this thesis. These concepts enable protocol architectures for MANETs that dynamically adapt to changing conditions based on cooperation and local information sharing. The efficient use of the limited bandwidth and energy resources obtained through such protocol architectures with a realistic set of constraints ensure the viability of future applications"--Page vi-viii.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: David Coudert
Publisher: Springer
ISBN: 3540852093
Category : Computers
Languages : en
Pages : 511
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Book Description
This book constitutes the refereed proceedings of the 7th International Conference on Ad-Hoc, Mobile, and Wireless Networks, ADHOC-NOW 2008, held in Sophia-Antipolis, France, September 2008. The 40 revised full papers and the 15 poster presentations were carefully reviewed and selected from 110 submissions. The papers deal with advances in Ad-Hoc networks, i.e. wireless, self-organizing systems formed by co-operating nodes within communication range of each other that form temporary networks. Their topology is dynamic, decentralized, ever changing and the nodes may move around arbitrarily.
Author: Archana Mantri
Publisher: Springer
ISBN: 3642225772
Category : Computers
Languages : en
Pages : 675
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Book Description
This book constitutes the refereeds proceedings of the International Conference on High Performance Architecture and Grid Computing, HPAGC 2011, held in Chandigarh, India, in July 2011. The 87 revised full papers presented were carefully reviewed and selected from 240 submissions. The papers are organized in topical sections on grid and cloud computing; high performance architecture; information management and network security.
Author: Sudip Misra
Publisher: Springer Science & Business Media
ISBN: 1848009097
Category : Technology & Engineering
Languages : en
Pages : 537
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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 mesh networks (WMNs). The attractiveness of WMNs, in general, is attributed to their characteristics such as the ability to dynamically self-organize and self-con?gure, coupled with the ability to maintain mesh connectivity leading, in effect, to low set-up/installation costs, simpler maintenance tasks, and service coverage with high reliability and fault-tolerance. WMNs also support their integration with existing wireless networks such as cellular networks, WLANs, wireless-?delity (Wi-Fi), and worldwide interoperability of microwave access (WiMAX). WMNs have found u- ful applications in a broad range of domains such as broadband home networking, commercial/business networking, and community networking – particularly attr- tive in offering broadband wireless access with low initial installation and set-up costs. Even though WMNs 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 wellknownchallenges areattributedtoissuesrelatingtoscalability(signi?cantdrop in throughput with the increase in the number of nodes), multicasting, offering qu- ity of service guarantees, energy ef?ciency, and security. This handbook attempts to provide a comprehensive guide on fundamental key topics coupled with new ideas and results in the areas of WMNs. The book has been prepared keeping in mind that it needs to prove itself to be a valuable resource dealing with both the important core and the specialized issues in WMNs.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Xiaohua Jia
Publisher: Springer Science & Business Media
ISBN: 3540308563
Category : Business & Economics
Languages : en
Pages : 1154
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Book Description
This book constitutes the refereed proceedings of the First International Conference on Mobile Ad-hoc and Sensor Networks, MSN 2005, held in Wuhan, China in December 2005. The volume also contains 12 papers of the MSN workshop on Modeling and the Security in the Next Generation Mobile Information Systems (MSNG 2005). The 112 revised full papers were carefully reviewed and selected from a total of 512 submissions. The papers address all current topical areas in mobile ad hoc and sensor networks such as network architecture and protocols, software platforms and development tools, self-organization and synchronization, routing and data dissemination, failure resilience and fault isolation, energy management, data, information, and signal processing, security and privacy, network planning, provisioning, and deployment, network modeling and performance evaluation, developments and applications, as well as integration with other systems.
Author: Jonathan Rodriguez
Publisher: Springer
ISBN: 3642351557
Category : Computers
Languages : en
Pages : 725
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Book Description
This book constitutes the thoroughly refereed post-conference proceedings of the 6th International ICST Conference on Mobile Multimedia Communications (MOBIMEDIA 2010) held in Lisbon, Portugal, in September 2010, which was accompanied by the First International Workshop on Cognitive Radio and Cooperative Strategies for POWER Saving (C2POWER 2010), the Workshop on Impact of Scalable Video Coding on Multimedia Provisioning (SVCVision 2010), and the First International Workshop on Energy-efficient and Reconfigurable Transceivers (EERT 2010). The 59 revised full papers presented were carefully reviewed and selected from numerous submissions and are organized in topical sections on advanced techniques for video transmission; multimedia distribution; modelling of wireless systems; cellular networks; mobility concepts for IMT-advances (MOBILIA); media independent handovers (MIH-4-MEDIA); and IP-based emergency applications and services for next generation networks (PEACE).
Author: Suman Lata
Publisher:
ISBN: 9783656674979
Category :
Languages : de
Pages : 12
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Book Description
Seminar paper from the year 2010 in the subject Computer Science - Internet, New Technologies, language: English, abstract: The formation of ad hoc wireless networks is stimulated by the requirement of a temporary communication infrastructure for quick communication with minimal configuration among a group of heterogeneous devices. Devices used for such applications could typically be enhanced personal digital assistants (PDAs), laptops with add-on wireless interface cards, or mobile devices with high processing power. Thus, this collaborative and distributed computing environment demands interoperatibilty among the devices. The additional features never come for free as they make the routing and other services more challenging and causes vulnerabilities in network services. Resource constrained, battery powered wireless mobile nodes not only have to self configure and self monitor them but also generates a very accommodating, trustworthy and affable environment. A classification of routing protocols and their brief description, based on their operating principles and underlying features is explained in this paper.
