Section: Partnerships and Cooperations

National Initiatives

ANR

GETRF

Participants : Paul Muhlethaler, Pascale Minet, Cédric Adjih, Emmanuel Baccelli, Philippe Jacquet.

Period: 2012 - 2014.

Partners: DGA/MI, Inria (coordinator), Alcatel-Lucent.

The GETRF project aims at improving the effectiveness of communications mechanisms and technologies capable of functioning in extreme conditions and GETRF also aims at opening ways for solutions that are close to the optimum. The following areas will be addressed:

• Compromise time / maximum efficiency for coloring (TDMA), which can be used to take into account the asymmetry of traffic delays to optimize routing.

• Significant energy savings for opportunistic routing (in power saving mode) even where traffic control is limited and where the nodes are idle most of the time ("low-duty cycle")

• From a completely different point of view, the finding optimal network capacity for opportunistic routing variants when designed for mobile networks

• Robustness to mobility and to changes in network conditions (difficult connectivity, foes, ...) extreme network coding - which is moreover an innovative technology in itself applied here in MANETs, at the network and/or application layer, rather than at the physical/or theoretical level as in other proposals.

The project focuses on four technical approaches which are:

• Coloring for the development of a TDMA system for energy saving and delay control,

• Cross-layer (MAC/routing) mechanism for "low-duty-cycle" mode

• Network coding,

• Opportunistic routing and mobile mobility to use relays to minimize retransmissions of packets with a target time.

The first two approaches are intended to provide energy efficient sensor networks. The second two approaches try to provide mechanisms for building ad hoc networks capable of handling high node mobility.

In this last year of the project we finalize our studies on the four main mechanism of the GETRF project:

• energy saving mechanisms using synchronous techniques,

• energy saving mechanisms using asynchronous techniques,

• network coding,

• mobile routing.

In the last deliverable of the project, we study how these techniques can be combined. We also present how to improve asynchronous techniques for energy saving and how to adapt mobile routing to other assumptions.

Competitivity Clusters

SAHARA

Participants : Pascale Minet, Ridha Soua, Erwan Livolant.

Period: 2011 - 2014.

Partners: EADS (coordinator), Astrium, BeanAir, CNES, ECE, EPMI, Eurocopter, GlobalSys, Inria, LIMOS, Oktal SE, Reflex CES, Safran Engineering Systems.

SAHARA is a FUI project, labelled by ASTECH and PEGASE, which aims at designing a wireless sensor network embedded in an aircraft. The proposed solution should improve the embedded mass, the end-to-end delays, the cost and performance in the transfers of non critical data.

During year 2014, we provided support to the SMEs in the SAHARA project for the implementation of network algorithms and protocols.

CONNEXION

Participants : Pascale Minet, Ines Khoufi, Erwan Livolant.

Period: 2012 - 2016.

Partners: EDF (coordinator), All4Tec, ALSTOM, AREVA, Atos WorldGrid, CEA, CNRS / CRAN, Corys TESS, ENS Cachan, Esterel Technologies, Inria, LIG, Predict, Rolls-Royce Civil Nuclear, Telecom ParisTech.

The Cluster CONNEXION (Digital Command Control for Nuclear EXport and renovation) project aims to propose and validate an innovative architecture platforms suitable control systems for nuclear power plants in France and abroad. This architecture integrates a set of technological components developed by the academic partners (CEA, Inria, CNRS / CRAN, ENS Cachan, LIG, Telecom ParisTech) and based on collaborations between major integrators such as ALSTOM and AREVA, the operator EDF in France and "techno-providers" of embedded software (Atos WorldGrid, Rolls-Royce Civil Nuclear, Corys TESS, Esterel Technologies, All4Tec, Predict). With the support of the competitiveness clusters System@tic, Minalogic and Burgundy Nuclear Partnership,the project started in April 2012. The key deliverables of the project covered several topics related demonstration concern-driven engineering models for the design and validation of large technical systems, design environments and evaluation of HMI, the implementation of Wireless Sensor Network context-nuclear, buses business object or real-time middleware facilitating the exchange of heterogeneous data and distributed data models standardized to ensure consistency of digital systems.

The HIPERCOM2 team is focuses more particularly on the interconnection of the OCARI wireless sensor network with the industrial facility backbone and deployment algorithms of wireless sensors. In November 2014, we contributed with our Connexion partners to a demonstration showing that OCARI:

• supports wireless sensors of various types (e.g. temperature sensor PT100, smoke detector produced by CEA, fire alarm produced by ADWAVE);

• can be interconnected via a gateway to the industrial facility backbone OPC/UA ROSA developed by Telecom ParisTech to reach the KASEM system in charge of predictive maintenance developed by Predict.

All the chain ranging from the physical sensors, the OCARI wireless network, the OPC/UA bus to the KASEM software was integrated to allow information originated from wireless sensor nodes to be displayed on the KASEM console.

We also focus on deployment algorithms for mobile wireless sensor networks in a temporary worksite or after a disaster. These deployments must ensure coverage and network connectivity. In 2013 we studied solutions to ensure full coverage of the area to monitor as well as network connectivity. We proposed solutions in a first step for autonomous mobile wireless sensor nodes and in a second step for static ones. In May 2014, we showed in a Connexion demonstration a tool displaying the deployment of wireless static sensor nodes in an indoor environment. Since these static nodes are deployed by a mobile robot, we studied how to optimize the exposition duration of a robot in an hostile environment. We also focused on network connectivity, more particularly on how to ensure a reliable connectivity to the sink of sensor nodes located at some points of interest. Our goal is to find the best trade-off between the number of relay nodes deployed and the length of the paths connecting each PoI to the sink.

SWAN

Participants : Cédric Adjih, Claudio Greco.

Period: 2011 - 2014

Partners: CNRS, Supélec, Université Paris-Sud (L2S), LTCI, LRI, Inria and IEF.

SWAN, Source-aWAre Network coding, is a DIMLSC DIGITEO project. It deals with network coding for multimedia.