1. Creative Project 4: Building a Zigbee Multi-hop Wireless Network-- develop a routing protocol on MicaZ 第七組 944373 黃文謙 944374 蔡志賢

2. Abstract 1.Construct a level-based distributed routing tree a. Find parent b. Adjust the transmission power level 2.Do sensing tasks and transmit the sensing result back to PC 3.Routing path recovery 4.Develop a java GUI to show the network topology

3. Find parent 1 2 3 4 5 level=1 Parent=1 level=1 Parent=1 level=2 Parent=3 level=3 Parent=4 Sink(level 0)

4. Adjust power level 1 2 3 45 Power level 1 Power level 2 ack Power level 2 Power level 4 Power level 3 RSSI must be higher than -85!

5. Rough topology The java GUI will show the rough topology including the routing tree and the power edge 1 3 2 45Power level 4 Power level 2 Power level 3

6. Sense the environment Each node will report the sensing result to the sink node along the path in the routing tree Each node periodically senses the light and keeps transmitting the result to its parent until reaching the sink node Then the sink node will transmit the result to the Java GUI and shows it

7. Routing path recovery—sensor fails 1 2 3 4 5 level=1 level=2level=3 Sink(level 0) Sensor 3 fails

8. Routing path recovery—sensor moves 1 2 3 45

9. Equipments and related work Equipments : 5 micaz motes Related works and references "On the Interdependence of Distributed Topology Control and Geographical Routing in Ad Hoc and Sensor Networks,'' to appear on JSAC Special Issue on Wireless Ad Hoc Networks, March 2005. "Optimal Local Topology Knowledge for Energy Efficient Geographical Routing in Sensor Networks,'' in Proc. of IEEE Infocom 2004, Hong Kong, P.R. China, March 2004. CC2420 Product Information and Data Sheet, chipcon, avaiable at http://www.chipcon.com

10. Thanks for your attention