A survey on mobility management protocols in Wireless Sensor Networks based on 6LoWPAN technology

International audienceMobility has the advantage of enlarging WSN applications. However, proposing a mobility support protocol in Wireless Sensor Networks (WSNs) represents a significant challenge. In this paper, we propose a survey on the mobility management protocols in Wireless Sensor Networks based on 6LoWPAN technology. This technology enables to connect IP sensor devices to other IP networks without any need for gateways. We highlight the advantages and drawbacks with performances issues of each studied solution. Then, in order to select a typical classification of mobility management protocols in WSNs, we provide some classification criteria and approaches on which these protocols are based. Finally, we present a comparative study of the existing protocols in terms of the required performances for this network type

Train-to-Ground communications of a Train Control and Monitoring Systems: A simulation platform modelling approach

Under the SAFE4RAIL project, we are developing a simulation platform based on a discrete-events network simulator."br" This platform models the Train-to-Ground (T2G) link in the framework of a system-level simulation of"br" Train Control Management System (TCMS). The modelled T2G link is based on existing wireless technologies,"br" e.g. Wi-Fi and LTE. Different T2G scenarios are defined in order to evaluate the performances of the Mobile"br" Communication Gateway (managing train communications) and Quality of Services (QoS) offered to TCMS applications"br" in the context of various environments (regular train lines, train stations, shunting zones, etc.) while"br" varying the number of communicating trains, train’s speed, radio channel characteristics (delay spread, channel"br" attenuation, etc.). This paper focusses on the design and validation of the TCMS transmission over Wi-Fi/LTE via"br" an approach based on simulation. This simulation platform aims to be also used to test actual TCMS equipment’s,"br" i.e. Mobile Communication Gateway and Ground Communication Gateway, connected to it through Hardware-"br" In-the-Loop facilities of the chosen discrete-events network simulator. Document type: Contribution for newspaper or weekly magazin

EC-MRPL: An energy-efficient and mobility support routing protocol for Internet of Mobile Things

International audienceInternet of Mobile Things (IoMT) is a new paradigm of the Internet of Things (IoT) where devices such as sensors, robots, unmanned aerial vehicles (UAV) and cars, are inherently mobile. While mobility enables innovative applications and allows new services, it remains a challenging issue as it causes disconnection of nodes and intermittent connectivity, which negatively impact the network performance; namely data loss, large handover delay and application functionality failures. In this paper, we propose a new energy efficient and mobility aware routing protocol named EC-MRPL based on the well-known Routing Protocol for Low power and Lossy Networks (RPL standard). Unlike RPL which is designed for low resources networks with basically static devices, the proposed protocol enables to better conserve the energy and sustain the connectivity of mobile nodes. EC-MRPL integrates an enhanced mobility detection method and a novel point of attachment prediction and replacement strategy aware of the resources constraints. As such, EC-MRPL overcomes and mitigates problems caused by mobility. Obtained simulation results using Cooja/Contiki show that ECMRPL outperforms both the RPL and the MRPL protocols in terms of handover delay, data loss rate, signaling cost and energy consumption

EKF-MRPL: Advanced Mobility Support Routing Protocol for Internet of Mobile Things: Movement prediction approach

International audienc

Train-to-Ground communications of Train Control and Monitoring Systems: A simulation platform modelling approach

TRA 2018, 7th Transport Research Arena, Vienne, AUTRICHE, 16-/04/2018 - 19/04/2018Under the SAFE4RAIL project, we are developing a simulation platform based on a discrete-events network simulator. This platform models the Train-to-Ground (T2G) link in the framework of a system-level simulation of Train Control Management System (TCMS). The modelled T2G link is based on existing wireless technologies, e.g. Wi-Fi and LTE. Different T2G scenarios are defined in order to evaluate the performances of the Mobile Communication Gateway (managing train communications) and Quality of Services (QoS) offered to TCMS applications in the context of various environments (regular train lines, train stations, shunting zones, etc.) while varying the number of communicating trains, train's speed, radio channel characteristics (delay spread, channel attenuation, etc.). This paper focusses on the design and validation of the TCMS transmission over Wi -Fi/LTE via an approach based on simulation. This simulation platform aims to be also used to test actual TCMS equipment's, i.e. Mobile Communication Gateway and Ground Communication Gateway, connected to it through Hardware In-the-Loop facilities of the chosen discrete-events network simulator

EMA-RPL: Energy and mobility aware routing for the Internet of Mobile Things

International audienc