Dr Djamel Djenouri's Outputs (106)

Cost effective node deployment strategy for energy-balanced and delay-efficient data collection in wireless sensor networks (2014)
Presentation / Conference Contribution

© 2014 IEEE. The real-world node deployment aspect is investigated, while considering cost minimization for resolving the energy hole around the sink, which represents a serious problem in typical sensor networks with uniform distribution. A novel st... Read More about Cost effective node deployment strategy for energy-balanced and delay-efficient data collection in wireless sensor networks.

Preface of the 6th IEEE international workshop on management of emerging networks and services (IEEE Globecom MENS 2014) (2014)
Presentation / Conference Contribution

© 2014 IEEE. This short paper serves as the preface of the 6th IEEE International Workshop on Management of Emerging Networks and Services (IEEE Globecom MENS 2014). The 6th IEEE MENS 2014 attracted a significant number of papers this year, as in the... Read More about Preface of the 6th IEEE international workshop on management of emerging networks and services (IEEE Globecom MENS 2014).

Congestion control protocols in wireless sensor networks: A survey (2014)
Journal Article

The performance of wireless sensor networks (WSN) is affected by the lossy communication medium, application diversity, dense deployment, limited processing power and storage capacity, frequent topology change. All these limitations provide significa... Read More about Congestion control protocols in wireless sensor networks: A survey.

DZ50: Energy-efficient wireless sensor mote platform for low data rate applications (2014)
Presentation / Conference Contribution

© 2014 The Authors. A low cost and energy efficient wireless sensor mote platform for low data rate monitoring applications is presented. The new platform, named DZ50, is based on the ATmega328P micro-controller and the RFM12b transceiver, which cons... Read More about DZ50: Energy-efficient wireless sensor mote platform for low data rate applications.

Ubiquitous sensor network management: The least interference beaconing model (2013)
Presentation / Conference Contribution

Network management is revisited in the emerging ubiquitous sensor networks (USNs) that form the Internet-of-the-Things (IoT) with the objective of evaluating the impact of traffic engineering on energy efficiency and assessing if routing simplicity t... Read More about Ubiquitous sensor network management: The least interference beaconing model.

On the relevance of using interference and service differentiation routing in the internet-of-things (2013)
Presentation / Conference Contribution

Next generation sensor networks are predicted to be deployed in the Internet-of-the-Things (IoT) with a high level of heterogeneity. They will be using sensor motes which are equipped with different sensing and communication devices and tasked to del... Read More about On the relevance of using interference and service differentiation routing in the internet-of-things.

BOD-LEACH: Broadcasting over duty-cycled radio using LEACH clustering for delay/power efficient dissimilation in wireless sensor networks (2013)
Journal Article

Copyright © 2013 John Wiley & Sons, Ltd. Broadcasting delay-sensitive information over a duty-cycled wireless sensor network is considered, and a cluster-based protocol is proposed. The proposed protocol, namely Broadcast over Duty-Cycle and LEACH... Read More about BOD-LEACH: Broadcasting over duty-cycled radio using LEACH clustering for delay/power efficient dissimilation in wireless sensor networks.

Duo-MAC: Energy and time constrained data delivery MAC protocol in wireless sensor networks (2013)
Presentation / Conference Contribution

We present Duo-MAC, an asynchronous cascading wake-up scheduled MAC protocol for heterogeneous traffic forwarding in low-power wireless networks. Duo-MAC deals with energy-delay minimization problem and copes with transmission latency encountered by... Read More about Duo-MAC: Energy and time constrained data delivery MAC protocol in wireless sensor networks.

Theoretical estimators and lower-bounds for receiver-to-receiver time synchronization in multi-hop wireless networks (2013)
Presentation / Conference Contribution

Maximum likelihood estimators (MLE) for time synchronization parameters of receiver-to-receiver protocols are derived. The MLE are first provided for a single-hop model, then generalized to a multi-hop model. The appropriate Cramer- Rao lower bounds... Read More about Theoretical estimators and lower-bounds for receiver-to-receiver time synchronization in multi-hop wireless networks.

Fault-tolerant implementation of a distributed MLE-based time synchronization protocol for wireless sensor networks (2013)
Presentation / Conference Contribution

This paper describes the implementation and evaluation of R4Syn protocol on MICAz platform and TinyOS operating system. The contribution is two folds. First, the implementation uses thorough maximum-likelihood estimators (MLE) in the joint offset/ske... Read More about Fault-tolerant implementation of a distributed MLE-based time synchronization protocol for wireless sensor networks.

Fast distributed multi-hop relative time synchronization protocol and estimators for wireless sensor networks (2013)
Journal Article

The challenging problem of time synchronization in wireless sensor networks is considered in this paper, where a new distributed protocol is proposed for both local and multi-hop synchronization. The receiver-to-receiver paradigm is used, which has t... Read More about Fast distributed multi-hop relative time synchronization protocol and estimators for wireless sensor networks.

A study of wireless sensor networks for urban traffic monitoring: Applications and architectures (2013)
Presentation / Conference Contribution

With the constant increasing of vehicular traffic around the world, especially in urban areas, existing traffic management solutions become inefficient. This can be clearly seen in our life through persistent traffic jam and rising number of accident... Read More about A study of wireless sensor networks for urban traffic monitoring: Applications and architectures.

Synchronous contention-based MAC protocols for delay-sensitive wireless sensor networks: A review and taxonomy (2013)
Journal Article

Duty-cycling allows obtaining significant energy saving compared to full duty cycle (sleepless) random access MAC protocols. However, it may result in significant latency. In slotted duty-cycled medium access control (MAC) protocols, sensor nodes per... Read More about Synchronous contention-based MAC protocols for delay-sensitive wireless sensor networks: A review and taxonomy.

FDAP: Fast data aggregation protocol in wireless sensor networks (2012)
Presentation / Conference Contribution

This paper focuses on data aggregation latency in wireless sensors networks. A distributed algorithm to generate a collision-free schedule for data aggregation in wireless sensor networks is proposed. The proposed algorithm is based on maximal indepe... Read More about FDAP: Fast data aggregation protocol in wireless sensor networks.

Cluster-based fast broadcast in duty-cycled wireless sensor networks (2012)
Presentation / Conference Contribution

This paper proposes a cluster-based broadcast protocol to disseminate delay-sensitive information throughout a wireless sensor network (WSN). The protocol considers the use of duty-cycling at the MAC layer, which is essential to reduce energy dissipa... Read More about Cluster-based fast broadcast in duty-cycled wireless sensor networks.

A study of wireless sensor network architectures and projects for traffic light monitoring (2012)
Presentation / Conference Contribution

Vehicular traffic is increasing around the world, especially in urban areas. This increase results in a huge traffic congestion, which has dramatic consequences on economy, human health, and environment. Traditional methods used for traffic managemen... Read More about A study of wireless sensor network architectures and projects for traffic light monitoring.

Slotted contention-based energy-efficient MAC protocols in delay-sensitive wireless sensor networks (2012)
Presentation / Conference Contribution

This paper considers slotted duty-cycled medium access control (MAC) protocols, where sensor nodes periodically and synchronously alternate their operations between active and sleep modes to save energy. Communications can occur only when nodes are i... Read More about Slotted contention-based energy-efficient MAC protocols in delay-sensitive wireless sensor networks.

Survey on latency issues of asynchronous MAC protocols in delay-sensitive wireless sensor networks (2012)
Journal Article

Energy-efficiency is the main concern in most Wireless Sensor Network (WSN) applications. For this purpose, current WSN MAC (Medium Access Control) protocols use duty-cycling schemes, where they consciously switch a node's radio between active and sl... Read More about Survey on latency issues of asynchronous MAC protocols in delay-sensitive wireless sensor networks.

R^{4}Syn: Relative referenceless receiver/receiver time synchronization in wireless sensor networks (2012)
Journal Article

A new time synchronization protocol for wireless sensor networks (WSN) is proposed. It uses the receiver-to-receiver principle introduced by the Reference Broadcast Synchronization (RBS), which reduces the time-critical path compared to the sender-to... Read More about R^{4}Syn: Relative referenceless receiver/receiver time synchronization in wireless sensor networks.

Estimators for RBS-based time synchronization in heterogeneous wireless networks (2011)
Presentation / Conference Contribution

A general scenario for using reference broadcast synchronization (RBS) in heterogeneous multi-hop wireless networks is defined, together with an appropriate model allowing to directly derive maximum likelihood estimators (MLE) to the skew and offset... Read More about Estimators for RBS-based time synchronization in heterogeneous wireless networks.