Vol. 64, n° 11-12, November-December 2009
Content available on Springerlink

Aggregated traffic flow weight controlled hierarchical MAC protocol for wireless sensor networks

M. Abdur Razzaque, M. Mamun-Or-Rashid, Muhammad Mahbub Alam, and Choong Seon Hong

Department of Computer Engineering, Kyung Hee University, 1, 446-701 Gyeonggi-do, South Korea

Abstract  It has been discussed in the literature that the medium-access control (MAC) protocols, which schedule periodic sleep–active states of sensor nodes, can increase the longevity of sensor networks. However, these protocols suffer from very low end-to-end throughput and increased end-to-end packet delay. How to design an energy-efficient MAC protocol that greatly minimizes the packet delay while maximizing the achievable data delivery rate, however, remains unanswered.» Read the summary

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Vol. 64, n° 9-10, September-October 2009
Content available on Springerlink

Guest editors
Gérard Lachapelle, University of Calgary, Canada
Nel Samama, Télécom SudParis, France
Masato Takahashi, NICT, Tokyo, Japan

Foreword

Gérard Lachapelle, Nel Samama, Masato Takahashi

A non-coherent architecture for GNSS digital tracking loops

Daniele Borio · Gérard Lachapelle

University of Calgary, 2500 University Dr NW, Calgary, Alberta T2N 1N4 Canada

Abstract In this paper, a new, noncoherent architecture for global navigation satellite system tracking loops is proposed and analyzed. A noncoherent phase discriminator, able to extend the integration time beyond the bit duration, is derived from the maximum likelihood principle and integrated into a Costas loop.» Read the summary

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Vol. 64, n° 7-8, July-August 2009
Content available on SpringerLink

Guest editors
Christophe Moy, Supélec, France
Linda Doyle, Trinity College, Ireland
Yukitoshi Sanada, Keio University, Japan

Foreword

Christophe Moy, Linda Doyle, Yukitoshi Sanada

Cognitive radio architecture evolution

Joseph Mitola III
Stevens Institute of Technology, Castle Point on Hudson, Hoboken, NJ 03070, USA

Abstract: Cognitive radio research has developed dynamic radio spectrum management to enhance spectrum efficiency, e.g., as secondary users in unused TV bands. The location and user context of the mobile wireless user that regulatory bodies and lawmakers view as significant to spectrum interference policies have not been addressed as thoroughly.» Read the summary

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Vol. 64, n° 5-6, May-June 2009
Content available on SpringerLink

Guest editors
Omar Cherkaoui, UQUAM, Canada
Masum Z. Hasan, Cisco, USA
Guy Pujolle, LIP6, France

Foreword

Omar Cherkaoui, Masum Z. Hasan, Guy Pujolle

Brief Report: The clean slate approach to future Internet design: a survey of research initiatives

Jim Roberts
Orange Labs

The AGAVE approach for network virtualization: differentiated services delivery

M. Boucadair¹, P. Georgatsos²,  N. Wang³, D. Griffin⁴, G. Pavlou⁴, M. Howarth³, A. Elizondo^5
1France Telecom R&D, Caen, France
²Algonet SA, Athens, Greece
³University of Surrey, Guildford, UK
⁴University College London, UK
⁵Téléfonica, Madrid, Spain

Abstract: This paper describes a new paradigm to realize network virtualization and defines two novel concepts, network planes and parallel Internets, to achieve service differentiation.» Read the summary

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Vol. 64, n° 3-4, March-April 2009
Content available on SpringerLink

A next-generation service overlay architecture

Emmanuel Lavinal¹, Noëmie Simoni¹, Meng Song², Bertrand Mathieu²
1 Télécom ParisTech, France
2 France Télécom R&D, Lannion, France

Abstract The rapid evolution of next-generation networks and, in particular, fixed mobile convergence infrastructures raises the issue of providing personalized services adapted to the user’s context such as its device, access network, preferences, or quality of service (QoS) requirements. To design such value-added services, one solution consists in composing dynamically distributed service entities. In this paper, we propose a service overlay architecture in which a service level path is dynamically established to fulfill the user’s requirements.» Read the summary

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Vol. 64, n° 1-2, January-February 2009
Content available on SpringerLink

Guest editors
Gordon Blair, University Lancaster, UK
Thierry Coupaye, Orange Labs, France
Jean-Bernard Stefani, Inria, France

Foreword

Gordon Blair , Thierry Coupaye, Jean-Bernard Stefani

GCM: a grid extension to Fractal for autonomous distributed components

Françoise Baude¹ · Denis Caromel¹ · Cédric Dalmasso¹ · Marco Danelutto · Vladimir Getov² · Ludovic Henrio¹ · Christian Pérez^3
1 INRIA Sophia-Antipolis, France
² Université de Pise, Italy
³ Université de Westminster, UK
⁴ INRIA/IRISA Rennes, France

Abstract This article presents an extension of the Fractal component model targeted at programming applications to be run on computing grids: the grid component model (GCM).» Read the summary

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