ICST 2011 Interconnecting 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 1

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

Internet of Things(IoT) 3 Core Internet Fringe Internet IoT Smart metering Industrial automation Transportation Personal Sensors Home Automation The Figure from:

 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. IoT(cont.) 4

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

 IEEE 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  Network layer and application layer 6 Smart Grid-ZigBee

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

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

ZigBee/6LoWPAN 9

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

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

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

ZigBee-based Smart Grid system architecture 13

6LoWPAN-based Smart Grid system architecture 14

Hybrid Smart Grid system architecture 15 ZigBee 6LoWPAN

SIP network management module 16 Subscribe / Notify Instant Message

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

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

 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. 19 Conclusion and future work

 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. Conclusion and future work (cont.) 20