Vol. 66, n° 11-12, November-December 2011
Content available on Springerlink

A simplified approach to modeling the interaction between grounding grid and lightning stroke

Basma Harrat¹, Bachir Nekhoul¹, Kamal Kerroum² and Khalil El Khamlichi Drissi^2
1 University of Jijel, Algeria
² University Blaise Pascal, Aubière, France

Abstract In this work, a new approach for the modeling of the interaction between grounding grid and lightning stroke is described. We treat the case of direct and indirect effects of lightning strike. In the case of direct impact, we inject in point of grounding system a current with bi-exponential wave shape and we calculate the distribution of potentials and currents on the grid and the electromagnetic field it will emit.» Read the summary

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Vol. 66, n° 9-10, September-October 2011
Content available on Springerlink

A distributed MAC scheme to achieve QoS in ad hoc networks

Ulf Körner, Ali Hamidian, Michal Pioro, Christian Nyberg
Lund University, Sweden

Abstract – Real-time applications introduce new requirements on wireless networks and impose quality thresholds on parameters like delay, jitter, throughput, and packet loss in order to run smoothly. This paper addresses this issue by presenting a MAC scheme that offers real-time applications the opportunity to reserve transmission time based on their QoS requirements for contention-free medium access. Our scheme, which is called EDCA with Resource Reservation (EDCA/RR), operates in a fully distributed manner, is compatible with IEEE 802.11, and provides both prioritized and parameterized QoS.» Read the summary

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Vol. 66, n° 7-8, July-August 2011
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Guest editors
Joe Wiart, Orange Labs, France
Luk Arnault, Imperial College, UK
Walid Tabbara, Supélec, France

Foreword

Statistics for management of complexity in electromagnetism

Joe Wiart¹, Luk Arnaut², Walid Tabbara^3
1 Orange Labs, France
² Imperial College, UK
³ Supélec, France

Joined initiatives around uncertainty management, Generic methodologies, mathematical challenges, and numerical implementations

Fabien Mangeant and EADS Innovation Works
EADS, Suresnes, France

Abstract – Uncertainty in context-aware computing is mainly a consequence of the complexity of context acquisition mechanisms and context processing. The presence of uncertainty may harm the users’ confidence in the application, rendering it useless.» Read the summary

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Vol. 66, n° 5-6, May-June 2011
Content available on Springerlink

Congestion-aware fair rate control in wireless mesh networks

Muhammad Mahbub Alam* · Md. Shariful Islam* · Md. Abdul Hamid** · Choong Seon Hong* and Sungwon Lee*
Department of Computer Science, North Carolina State University, Raleigh, NC 27695–8206, USA

Abstract This paper presents a fair and efficient rate control mechanism, referred to as congestion-aware fair rate control (CFRC), for IEEE 802.11s-based wireless mesh networks. Existing mechanisms usually concentrate on achieving fairness and achieve a poor throughput. This mainly happens due to the synchronous rate reduction of neighboring links or nodes of a congested node without considering whether they actually share the same bottleneck or not.» Read the summary

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Vol. 66, n° 3-4, March-April 2011
Content available on SpringerLink

Guest editors
Laurent Ouvry, CEA-Leti, Grenoble, France
Bin Zhen, Huawei, Beijing, China
Simon Cotton, ECIT Institute, Belfast, Ireland

Foreword 

Laurent Ouvry¹ · Bin Zhen² · Simon Cotton^3
1.CEA-Leti, Grenoble, France
².Wireless Research Department, Huawei, China
³.Royal Academy of Engineering Research Fellow, ECIT Institute, Belfast, Ireland

Antenna design and channel modeling in the BAN context—part I: antennas

Christophe Roblin¹, Jean-Marc Laheurte², Raffaele D’Errico³, Azeddine Gati³ and David Lautru⁵, et al.
¹. ENSTA Paris-Tech, France
².» Read the summary

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Vol. 66, n° 1-2, January-February 2011
Content available on SpringerLink

Guest editors
Prosper Chemouil, Orange Labs, France
Michael Menth, University of Wuerzburg, Germany
Deep Medhi, University of Missouri, Kansas City, USA
Fabrice Guillemin, Orange Labs, France

Foreword 

Prosper Chemouil¹ · Michael Menth² · Deep Medhi³ · Fabrice Guillemin¹

¹.Orange Labs, France
².University of Wuerzburg, Germany
³.University of Missouri – Kansas City, USA

A new statistical approach to estimate global file populations from local observations in the eDonkey P2P file sharing system

Patrick Brown¹ · Sanja Petrovic¹

¹. Orange Labs, Sophia-Antipolis, France

Abstract In this paper, we propose a new statistical approach, also known in biology under the name capture–recapture methods in order to estimate global population statistics from local observations.» Read the summary

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