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EYES
IST-2001-34734
http://eyes.eu.org

The EYES project is a three years European research project (IST-2001-34734), on self-organizing and collaborative energy-efficient sensor networks. It addresses the convergence of distributed information processing, wireless communications, and mobile computing. The project runs from March 2002 till February 2005. The vision of ubiquitous computing requires the development of devices and technologies, which can be pervasive without being intrusive. The basic components of such a smart environment will be small nodes with sensing and wireless communications capabilities, able to flexibly organize into a network for data collection and delivery. Realizing such a network presents very significant challenges, especially at the architectural and protocol/software levels. Major steps forward are required in the field of communications protocol, data processing, and application support. Although sensor nodes will be equipped with a power supply and embedded processor that makes them autonomous and self-aware, their functionality and capabilities will be very limited. Therefore, collaboration between nodes is essential to deliver smart services in a ubiquitous setting. In this project we investigate new algorithms for networking and distributed collaboration, and we evaluate their feasibility through experimentations. These algorithms will be the key for building self-organizing and collaborative sensor networks that can operate in a challenging environment where nodes move, fail, and energy is a scarce resource.

The technical work will focus mostly on architectural, protocol and software issues. This area is in fact believed to be the true bottleneck in current sensor networks. The challenges to face in developing new technologies for sensor networks are the need for the nodes to be smart, self-configurable, capable of networking together, and the inherent poverty of resources of the nodes themselves. The main thrust of the work will therefore be directed towards the development of new architectural schemes and communications protocols and algorithms at multiple layers, taking into account those specific features. In particular, schemes which are able to work efficiently in the presence of limited energy, processing power and memory, will be developed. In the EYES architecture, applications rely on a two-level structure. The lower layer deals with sensors and networking, whereas the upper layer provides distributed services to the application by using the networking and transport capabilities offered by the lower layer. Detailed architectural studies will be carried out during a system architecture WP, whose aim is to produce an open framework for flexible development of new applications. According to this architectural view, there are two main research WPs. WP2 on sensor and networking will develop technology for communications and networking, including internal sensor architecture, distributed wireless access, routing protocols, reliable end-to-end transport, synchronization and localization of nodes. WP3 on distributed services deals with the service layer, which supports mobile sensor applications, and it will address issues and services such as information collection, lookup, discovery, security. As a vehicle to show the usability of a sensor network, a large-scale sensor network (100+ nodes) will be built and some of the developed algorithms will be implemented and tested.

Our contribution regards study and implementation of power aware routing solutions with low complexity. The idea is to integrate the second and third ISO-OSI layers into the same layer and to allow the information forwarding attempting to reach the destination by selecting the relay nodes closer to it. The addressing scheme is directly linked to the nodes position and the node loops between working and idle state to preserve battery energy. Further investigations regard localization mechanism, based on on-board sensor resources and aimed at information labeling and routing support. Finally, some efforts are directed to create a low complexity cryptographic system with performance similar to the AES one. On this object chaotic techniques are explored.

 
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