ISR research accomplishments

Energy Conserving Sensor Communications

Research team

Jae-Hwan Chang, Leandros Tassiulas (ECE/ISR)

Accomplishment

We developed communication network protocols for sensor networks that conserve energy and maximize the system lifetime.

System set-up and evaluation. A typical senario for evaluation and comparisons of our algorithms is presented.

Area: 500 m x 500 m
# of sensors : 100
Sensor range : 100 m
Transmission range:100 m
Target speed : 20 m/sec
Energy expenditure
Packet generation interval: 1 sec during detection

Impact

• The availability of simple inexpensive sensor nodes generated a lot of activity on the development of sensor systems for monitoring and data collection in diverse applications fields.
• Energy consumption is a crucial factor for the operation of the system. It determines the lifetime of the system as recharging is usually infeasible.
• The routing algorithms we developed maximize the lifetime of the system achieving improvements of the order of 150% compared to the lifetime achieved by the minimum transmitted energy path routing that had been proposed earlier.

For more information

J.H. Chang, L. Tassiulas, “Energy Conserving Routing in Wireless Ad-hoc Networks,” Proceedings of IEEE INFOCOM00, Tel-Aviv, Israel, March 2000.

J.H. Chang, L. Tassiulas, “Maximum lifetime routing in sensor networks,” Proceedings of ATIRP 2000.