ICST 2011Interconnecting ZigBee and 6LoWPAN

Wireless Sensor Networks for Smart Grid Applications

Advisor: Quincy Wu Speaker: Chia-Wen Lu

National Chi Nan UniversityTaiwan

Date: 2011/11/30

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

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Outline

Internet of Things(IoT)

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Core Internet

Fringe Internet

IoT

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01245012

Smart Metering

Industrial Automation

Transportation

Personal Sensors

HomeAutomation

The Figure from: http://6lowpan.net/

In large-scale IoT deployment there will be rich combination of sensors and intelligent management schemes. Wireless sensor networks (WSNs) play a very

important role in IoT.

WSNs are adopted in many applications. This paper focus on the application of Smart Grid.

IoT(cont.)

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Smart Grid

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01245012 meter

aggregation point (translator)

utility system

Internet

ZigBee

The Figure from: Li-Wen Chen, “ZigBee/TCPIP Translators in Smart Grid”, ICET2011

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IPNetwork

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

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ZigBee

Local network and InternetZigBee devices can communication to each

other.ZigBee devices can not directly communicate

with servers on the Internet.An additional mechanism is required to

translate ZigBee to TCP/IP. It would be better if have protocol can speak

with TCP/IP without translation.

ZigBee (cont.)

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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.

6LoWPAN

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ZigBee/6LoWPAN

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ZigBee NWK

ZigBee APS

Hybrid Smart Grid system architecture

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ZigBee

6LoWPAN

There is still no universal network management protocol standard to manage two different types of ZigBee and 6LoWPAN devices.

This paper proposed using SIP(Session Initiation Protocol ) as the application layer protocol to manage ZigBee and 6LoWPAN WSNs.

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Problem

Signaling protocol Point to point Multiple points

Applications Voice over Internet Protocol(VoIP) Instant Message Network Management

Network management-SIP

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ZigBee-based Smart Grid system architecture

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6LoWPAN-based Smart Grid system architecture

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Hybrid Smart Grid system architecture

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SIP network management module

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Subscribe / Notify

Instant Message

Subscribe and Notify Module

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Servers can subscribe data which it wants to monitor from end devices.

Example:Electricity consumption Temperature of meter

Instant Message Module

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Servers can send commands to devices.

Example:Shutting down or

starting devicesChanging devices

settings

This paper compared the communication protocols between a utility system and smart meters, and suggested how network management applications can be carried on these protocols.

Two major network management protocols: SNMP(Simple Network Management Protocol)and SIP.

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Conclusion and future work

Empirically 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.)

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Thanks for your attention.