Section: Contracts and Grants with Industry
The OCARI (Optimization of Ad hoc Communications in Industrial networks) project, funded by ANR, started in January 2007. It has a duration of 36 months. The industrial partners are EDF (coordinator), DCN and One-RF. The academic partners are LIMOS (Clermont Ferrand university), LATTIS (Toulouse university), LRI (Paris Sud university) and INRIA.
The OCARI project aims at developing and deploying a new generation of wireless sensor networks in industrial environments. It will propose adaptive networks taking into account highly constrained environments and allowing new applications to emerge. On the one hand, the OCARI infrastructure must meet the following constraints:
a reduced energy consumption by means of protocols allowing nodes to sleep and an energy efficient routing,
an environment with electromagnetic perturbations,
a high versatility of the physical layer, limited network resources and energy constraints.
On the other hand, to meet the requirements of supported applications (remote command of actuators, tele-diagnostic...), new solutions will be brought to manage several communication modes, ranging from deterministic data transfers to delay tolerant transfers. A key issue is how to adapt routing algorithms to the industrial environment, taking into account more particularly limited network resources (e.g.; bandwidth), node mobility and hostile environment reducing radio range.
The INRIA contribution concerns energy efficient routing and nodes activity scheduling. The energy efficient extension of OLSR, called OLSRE , will be implemented on top of the MAC protocol defined by LATTIS and LIMOS. The MAC protocol is a variant of ZigBee ensuring some determinism and quality of service and allowing leave nodes (e.g. sensor, actuator) as well as router nodes to sleep. SERENA will be adapted to the specific context of OCARI (i.e.; very limited bandwidth 250kbps, small size messages 127 bytes, limited memory and limited processing power).