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2nd IEEE international conference on Wireless and mobile Computing, Networking and Communications (WiMob 2006)

作者： Mnif, K. Rong, B. Kadoch, M. Ecole Technol Super LAGRIT 1100 Notre Dame O Montreal PQ Canada

ISBN: (纸本)1424404940

The main concerns of network performance are throughput, end-to-end packet delay and packet loss. A high-performance network is characterized by high throughput, small delay, and low packet loss. In this paper, a theoretical model to analyse the one hop throughput with regular structure operating under the CSMA/CA access protocol in wireless ad hoc networks is proposed. Numerical results show that we can find an optimal transmission range to achieve the highest throughput. An optimal transmission range is essential to limit the energy dissipation on the mobile devices.

关键词： collision avoidance throughput transmission range wireless ad hoc networks

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Topology Control in Wireless mobile ad hoc networks with Directional Antennas 2

Topology Control in Wireless Mobile Ad Hoc Networks with Dir...

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2nd IEEE international conference on Computer and Communications (ICCC)

作者： Zhang, Wang Peng, Laixian Xu, Renhui Zhang, Lei PLA Univ Sci & Technol Coll Commun Engn Nanjing Jiangsu Peoples R China

ISBN: (纸本)9781467390262

Topology control (TC) for ad hoc networks aims to reduce radio interference and energy consumption. Most of proposed algorithms assume the usage of isotropic antennas and thus only adjust the transmission power of each node. In this paper, we propose three kinds of topology control algorithms for wireless mobile ad hoc networks with directional antennas, which transmit in specific antenna pattern (direction(s)) to create the desired topology. Those algorithms are applied to topology control process between high-speed aircraft and low-speed ships in the Airborne-sea ad hoc networks (ASNETs). We investigate the conflict rate, energy consumption and gateway transfer of every algorithm. Analysis and simulation show that those algorithms have their own strong points and weaknesses. In the end, future possibilities to ameliorate topology control algorithms are discussed.

关键词： topology control directional antennas airborne-sea ad hoc networks

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A graph-center-based scheme for energy-efficient data collection in wireless sensor networks

A graph-center-based scheme for energy-efficient data collec...

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2nd international conference on mobile ad-hoc and sensor networks

作者： Wang, Dajin Montclair State Univ Dept Comp Sci Montclair NJ 07043 USA

ISBN: (纸本)9783540499329

We consider the problem of sensor data collection in a wireless sensor network (WSN). The geographic deployment of sensors is random, with an irregular network topology. We propose a data collection scheme for the WSN, based on the concept of the center of the graph in graph theory. The purpose of the scheme is to use less power in the process of data collection. Because it is mostly true that the sensors of WSN are powered by batteries, power saving is an especially important issue in WSN. In this paper, we will propose the energy-saving scheme, and provide the experimental results. It is shown that under the energy consumption model used in the paper, the proposed scheme saves about 20% of the power collecting data from sensors.

关键词： energy efficiency graph center hierarchical structures wireless networks wireless sensor networks

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A pure peer-to-peer approach for kNN query processing in mobile ad hoc networks

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PERSONAL And UBIQUITOUS COMPUTING 2013年第5期17卷 973-985页

作者： Nghiem, Thao P. Waluyo, Agustinus Borgy Taniar, David Monash Univ Fac Informat Technol Clayton Vic 3800 Australia

Together with advanced positioning and mobile technologies, P2P query processing has attracted a growing interest number of location-aware applications such as answering kNN queries in mobile ad hoc networks. It not only overcomes drawbacks of centralized systems, for example single point of failure and bottleneck issues, but more importantly harnesses power of peers' collaboration. In this research, we propose a pure mobile P2P query processing scheme which primarily focuses on the search and validation algorithm for kNN queries. The proposed scheme is designed for pure mobile P2P environments with the absence of the base station support. Compared with centralized and hybrid systems, our system can reduce energy consumption more than six times by making use of data sharing from peers in a reasonable mean latency of processing time for networks with high density of moving objects as can be seen in the simulation results.

关键词： mobile database mobile ad hoc networks Wireless ad hoc networks Collaborative caching

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Energy averaging schemes for ad hoc wireless sensor networks

Energy averaging schemes for Ad Hoc wireless sensor networks

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2005 2nd international conference on mobile Technology, Applications and Systems

作者： Dali, Wei Chan, H. Anthony Silombela, Benjamin IEEE Department of Electrical Engineering University of Cape Town Private Bag Rondeboseh 7701 South Africa Namwater Corporation Namibia

ISBN: (纸本)9810545738

Power consumption is an important issue in energy-constrained ad hoc wireless sensor networks. Many schemes have been proposed in this field to prolong the lifespan of the networks. However the rates of power consumption in different areas of the network are different. Though some schemes do save energy in some areas in the network, running out of energy earlier in other areas causes the connectivity of the network to be lost because of the limited RF range of the sensors. This paper proposes two schemes to average the power consumption of the whole sensor network. In this design, two scenarios are considered: Optimized Connectivity (OC) for networks with high-density sensors and Cluster Re-Partitioning (CRP) for networks with low-density sensors. Simulation results show that, the energy in the entire network is all together used up almost simultaneously so that no energy is wasted. Therefore the lifespan of the whole networks is prolonged.

关键词： Wireless sensor networks

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mobile network management and robust spatial retreats via network dynamics

Mobile network management and robust spatial retreats via ne...

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2nd IEEE international conference on mobile ad-hoc and sensor Systems, MASS 2005

作者： Ma, Ke Zhang, Yanyong Trappe, Wade Rutgers University 73 Brett Rd. Piscataway NJ 08854

ISBN: (纸本)0780394666

The mobility provided by mobile ad hoc and sensor networks will facilitate new mobility-oriented services. Recent work has demonstrated that, for many issues, mobility is advantageous to network operations. This paper proposes that the need for mobility may be captured by formulating the movement of nodes as a classical dynamical system. Motivated by classical mechanics, we propose the notion of network dynamics, where the position and movement of mobile devices evolve according to forces arising from system potential functions that capture the operational goals of the network. We argue that, in the context of moving communicating nodes, the equations of motion should be formulated as a steepest descent minimization of the system potential energy. Further, since global information is not practical in sensor networks, we introduce distributed algorithms that yield more practical implementations of network dynamics. The resulting algorithms are generic, and may be applied to produce balanced network configurations for different initial network deployments. As a second application of network dynamics, we examine the problem of adapting a mobile sensor network to the threat of a jammer. We show that the combination of spatial escape strategies with network dynamics prevents network partitioning that might arise from a mobile jammer. © 2005 IEEE.

关键词： Computer networks

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Joint design of routing and medium access control for hybrid mobile ad hoc networks

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mobile networks & APPLICATIONS 2007年第1期12卷 57-68页

作者： Du, Xiaojiang (James) Wu, Dapeng Univ Florida Dept Elect & Comp Engn Gainesville FL 32611 USA N Dakota State Univ Dept Comp Sci Fargo ND 58105 USA

Efficient routing and medium access control (MAC) are very important for mobile ad hoc networks (MANETs). Most existing routing and MAC protocols consider homogeneous ad hoc networks, in which all nodes are modeled as the same, i.e., they have the same communication capabilities and characteristics. Although a homogeneous network model is simple and easy to analyze, it misses important characteristics of many realistic MANETs such as military battlefield ad hoc networks. In addition, a homogeneous ad hoc network suffers from poor performance and scalability. In many ad hoc networks, multiple types of nodes do co-exist;and some nodes have larger transmission power, higher transmission data rate, and better processing capability, are more reliable and robust than other nodes. Hence, a hybrid network model is more realistic and provides many advantages for designing better routing and MAC protocols. In this paper, we present a new routing protocol called Hybrid Routing, which is specifically designed for hybrid MANETs. In addition, a novel MAC protocol is jointly designed for hybrid MANETs. Extensive simulations demonstrate that the proposed routing MAC protocols have very good performance.

关键词： routing medium access control hybrid mobile ad hoc networks

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Multimedia content delivery between mobile cloud and mobile devices 13

Multimedia content delivery between mobile cloud and mobile ...

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13th international conference on ad-hoc networks and Wireless, adhoc-NOW 2014 accompanied by 2nd international Workshop on Emerging Technologies for Smart Devices, ETSD 2014, 2nd international Workshop on Marine sensors and Systems, MARSS 2014, Multimedia Wireless ad hoc networks, MWaoN 2014, Security in ad hoc networks, SecAN 2014, 2nd Smart sensor Protocols and Algorithms, SSPA 2014 and 8th international Workshop on Wireless sensor, Actuator and Robot networks, WiSARN 2014

作者： Jakimovski, Goran Karadimce, Aleksandar Davcev, Danco Skopje Macedonia Skopje Macedonia

ISBN: (纸本)9783662463376

The usage of mobile devices in everyday life poses new challenges for processing, adaptation and rendering of multimedia content, which can’t be accomplished due to mobile device limitations (battery lifetime, storage limitation, processing capacity and etc.). The proposed mobile Cloud Content Delivery (MCCD) framework shows how multimedia delivery applications and services can efficiently exploit the computing power of mobile cloud resources to achieve high efficient delivery of multimedia content. The experimental case study shows how local multimedia content from the mobile device can be offloaded and processed in the mobile cloud and the transformed multimedia content can be delivered back to the user’s mobile device. The case study further shows that using different communication protocols (EDGE, 3G and LTE) to offload media content to MCCD can significantly influence the turnaround computational time. © Springer-Verlag Berlin Heidelberg 2015.

关键词： Multimedia services

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adding Reliability of Broadcast Methods in Vehicular ad hoc networks

Adding Reliability of Broadcast Methods in Vehicular Ad hoc ...

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2nd international conference on Next Generation mobile Applications, Services and Technologies

作者： Khakbaz, Samaneh Fathy, Mahmood Iran Univ Sci & Technol Tehran Iran

ISBN: (纸本)9780769533339

Many of applications in Vehicular ad hoc networks (VANET) are based on dissemination of information, so broadcasting is one of the fundamental services in these networks. Most of applications in VANET, especially safety applications, require broadcasting of messages with high reliability in different node densities. In this paper we propose a new broadcast method, which assures broadcasting of message to back and forward directions. To analyzes its performance, it has been evaluated by network Simulator (NS2). Simulation results show, this method has high reliability to deliver message in both directions, especially in low node densities.

关键词： Vehicular ad hoc networks

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Comparing the Throughput and Delay of Proactive and Reactive Routing Protocols in mobile ad-hoc networks 2

Comparing the Throughput and Delay of Proactive and Reactive...

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2nd international conference on Inventive Systems and Control (ICISC)

作者： Reddy, M. Chaitanya Kishore Sujana, Arani Sujita, Arani Rudroj, Kriti St Peters Engn Coll Dept Comp Sci & Engn Hyderabad 500010 India

ISBN: (纸本)9781538608074

mobile ad hoc networks (MANETs) are forthcoming wireless networks lying of mobile nodes that communicate without base stations. Nodes in these networks will create both user and application activity and complete network controlling and routing protocols. Rapidly evolving availability, higher error rates, collision obstructions, network partitions, and bandwidth constraints together stance new issues in network control. Many routing protocols for such networks have been recommended so far to find out improved routes from source to the destination and prominent among them are Dynamic Source Routing (DSR), ad-hoc On Demand Distance Vector (AODV), and Destination-Sequenced Distance Vector (DSDV), Dynamic MANET On-Demand (DYMO), Dynamic Source Routing (DSR), Temporally-Ordered Routing Algorithm (TORA) routing protocols. The comparison of these protocols should be considered as the essential advance towards the innovation of routing protocol and the results show that AODV's performance is optimally well than DSDV, TORA, DYMO and DSR in the different properties of the routing protocol.

关键词： AODV DSR DSDV Delay MANETs Throughput

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