TUTWSN - Wireless Sensor Network 

Wireless mesh sensor network technology in practise

See below a summary of  the outstanding features that have been designed, implemented and fully proofed to work in practise in real-life deployments of TUTWSN technology. TUTWSN is used in sensing, positioning, control and messaging applications.

Presentations

Overview of TUTWSN (2007)
Langattoman anturiverkon kokemukset ja mahdollisuudet (2009)
TUTWSN: Experiences on the development and field testing of autonomous Wireless Sensor Network (2009)
Ubiikkiteknologiatkaupunkiympäristössä (2009)
Ultra-Low Energy Wireless Sensor Networks in Practice (2008)
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• TUTWSN nodes form arbitrary mesh topology automatically
• No other networks required to operate
• Nodes can be sources or sinks of data
• No limits to the number of nodes
• TUTWSN scales well to very large or dense networks

• No logical or physical central network coordinator or controller
• No single point of failure

• Data is routed from node to node in multi-hopping
• No limits to the number of hops
• Each node perform routing decisions independently but taking into account neighbours
• No central controller or off-network route calculation required

• Several physically isolated TUTWSN networks can co-exist on same area
• Physically separated networks use different radio addresses
• Nodes are not able to physically communicate with nodes of different networks

• Several logically isolated TUTWSN networks can co-exist on same area
• All nodes are available for routing, but data is secured and only available for a specific network

• Nodes can be freely added or removed without breaking remaining nodes operation
• No manual configuration for node(s) or network - just add or remove
• No pre-installation radio signal measurements or network planning required

• Aribtrary number of gateway nodes to/from other networks
• Note: Gateway node(s) are not base stations and do not control the network
• Gateway nodes can be freely placed withing network coverage
• Gateway node(s) act as data sources or sinks in network like other nodes
• Use of several gateways prevents congestion in routing

• One or more nodes can freely move with respect to other nodes with different speeds
• All nodes (whole network) can move
• TUTWSN features energy efficient continuous neigbour discovery algorithms for rapid re-routing

• TUTWSN includes all mesh WSN features with record breaking energy efficiency
• Network-wide energy optimization
• Nodes change automatically roles on the fly to balance energy as whole
• Nodes with low energy stop routing  but stay associated to a routing node
• Nodes take routing role automatically again if energy is later increased

• Secure on-field firmware re-programming
• Deploy one node with new firmware within network and the rest of the nodes upgrade themselves automatically
• Each node has secured bootloader

• TUTWSN optionally uses strong encryption and authentication
• Energy efficient AES implementation