Advisor: Quincy Wu Speaker: Chia-Wen Lu National Chi Nan University Taiwan Date: 2011/11/30

1. ICST 2011Interconnecting ZigBee and 6LoWPAN Wireless Sensor Networks for Smart Grid Applications Advisor: Quincy Wu Speaker: Chia-Wen Lu National Chi Nan University Taiwan Date: 2011/11/30

2. Outline • Internet of Things (IoT) • Smart Grid • Smart Grid-ZigBee • Smart Grid-6LoWPAN • ZigBee/6LoWPAN • Problem • Network management-SIP • System architecture • Conclusion and future work

3. 00000 01245012 Internet of Things(IoT) IoT Fringe Internet Smart metering Core Internet Home Automation Industrial automation Personal Sensors The Figure from:http://6lowpan.net/ Transportation

4. IoT(cont.) • In large scale IoT deployment there will be rich combination of sensors and intelligent mana-gement schemes. • Wireless sensor networks (WSNs) play a very important role in IoT. • WSNs are applied in many fields. • This paper focus on the field of Smart Grid.

5. 00000 01245012 Smart Grid aggregation point (translator) Internet utility system meter Internet ZigBee The Figure from: Li-Wen Chen, “ZigBee/TCPIP Translators in Smart Grid”, ICET2011

6. Smart Grid-ZigBee • IEEE 802.15.4 was proposed for wireless personal area network communication. • Physical layer and data link layer • Characteristics: short distance transmission、low power consumption、low cost • ZigBee • Based on IEEE 802.15.4 • Network layer and application layer

7. Smart Grid-ZigBee(cont.) • Local network and Internet • ZigBee devices can communication to each other. • ZigBee devices can not directly communicate with servers on the Internet. • An additional mechanism is required.

8. Smart Grid-6LoWPAN • 6LoWPAN（IPv6 over Low-Power Wireless Personal Area Networks） • Based on IEEE 802.15.4 • Network layer – IPv6 • Compatible with Internet • Do not need additional protocol translation.

9. ZigBee/6LoWPAN

10. Problem • There is still no universal network management protocol standard to manage two different types of ZigBee and 6LoWPAN devices. • This paper proposed SIP(Session Initiation Protocol ) application layer protocol to manage ZigBee and 6LoWPAN WSNs.

11. Network management-SIP • Control communication protocol • Point to point • Multiple points • Applications • Voice over Internet Protocol(VoIP) • Instant Message • Network Management

12. System Architecture • IPv6 and SIP are added to the Smart Grid management system. • Smart Grid • ZigBee-based • 6LoWPAN-based • Hybrid • SIP network management module

13. ZigBee-based Smart Grid system architecture

14. 6LoWPAN-based Smart Grid system architecture

15. Hybrid Smart Grid system architecture 6LoWPAN ZigBee

16. SIP network management module Instant Message Subscribe / Notify

17. Subscribe and Notify Module • Servers can subscribe data which it wants to monitor from end devices. • Example: • Electricity consumption • Temperature of meter

18. Instant Message Module • Servers can send commands to devices. • Example: • Shutting down or starting devices • Changing devices settings

19. Conclusion and future work This paper compared the communication protocols between power plants and clients, and suggested how network management applications can be carried on these protocols. Two major network management protocols: SNMP(Simple Network Management Protocol)and SIP.

20. Conclusion and future work (cont.) Comparing SNMP and SIP, especially analyzing the transmission performance and the system resources consumption on a device. This would allow administrators to manage a smart grid with the best management protocol.