16-10-2010, 02:57 PM
[attachment=6283]
WISENET-Wireless Sensor Network (Download Seminar Report)
Communication Power
Consumption
• How to communicate when nodes sleep
most of the time?
• Design MAC to reduce wasted power due
to:
– Idle listening
– Overemitting
– Overhearing
– Collisions
Power Comparison
• CSMA limited at low traffic
– Receiver never turned off
• T-MAC
– Choose duty cycle
– Drops packets at low duty cycles, so get either
low power in low traffic or high throughput
• WiseNET is ultralow-power for low traffic,
efficient for high traffic.
WISENET-Wireless Sensor Network (Download Seminar Report)
Communication Power
Consumption
• How to communicate when nodes sleep
most of the time?
• Design MAC to reduce wasted power due
to:
– Idle listening
– Overemitting
– Overhearing
– Collisions
Power Comparison
• CSMA limited at low traffic
– Receiver never turned off
• T-MAC
– Choose duty cycle
– Drops packets at low duty cycles, so get either
low power in low traffic or high throughput
• WiseNET is ultralow-power for low traffic,
efficient for high traffic.
