Outline of our approach to wirelessly reprogramme the nodes in the sensor network. The system is able to update itself, and reduces the communication cost by distribution only the changes to the currently running code.
The design of the T-MAC protocol. The protocol saves energy by turning off the radio for a period of time when no more messages have to be exchanged. The sleeping time is not fixed, allowing the protocol to adapt to different levels of network activity. Simulation results show considerable energy savings.