1. National Chi Nan University
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
P.3 字首大寫（不一致）
P.4 large-scale
P.4 mana-gement
P.4 field -> application
P.5 For security reason, meter data are generally transported by private TCP/IP networks, instead of the Internet.
P.6 這頁和 Smart Grid 無關呀！標題要改 
P.6 英文簡報不該有中文頓號
P.8 這頁也沒有 Smart Grid. 基本上你講的只是 Network Layer Protocol.
P.9 圖中是  LoWPAN 還是 6LoWPAN?
P.9 這圖左邊看起來，ZigBee 沒有 Transport Layer. 但其實它是有的。ZigBee 的 Transport Layer 功能叫什麼？Try to figure out. (See P.13)
P.9 到 P.10 轉得太硬了。最好是用一張同時有 ZigBee, 6LoWPAN, Internet 的圖來說明為何要有一個 universal network mgmt protocol
P.10 proposed "using" SIP "as" the application layer protocol
P.11 什麼叫 control communication protocol? 沒聽過這名詞！
P.12 這頁很奇怪，看起來好像世界上的 Smart Grid 只用 ZigBee 和 6LoWPAN 這兩種協定，但事實上還有其他的協定。建議把這頁刪掉，在下頁中說明系統中加入 IPv6 & SIP 即可。
P.19 你何時講到 Power Plants 了？你的 clients 指的是什麼（這名詞被濫用了，不夠 precise）。
P.19 強調是 Empirically comparing 會更佳

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

3. Internet of Things(IoT)
Fringe Internet
未來趨勢:
真實世界中的任何物體透過網際網路可以彼此交換訊息
達到管理與通訊的目的
簡單來說就是物物相連的網路，稱為物聯網
Smart
Metering
00000
Home
Automation
Core Internet
Industrial
Automation
Personal Sensors
The Figure from:
Transportation

4. IoT(cont.)
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.

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

6. ZigBee
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

7. 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 to translate ZigBee to TCP/IP.
It would be better if have protocol can speak with TCP/IP without translation.

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

9. ZigBee/6LoWPAN
ZigBee APS
ZigBee NWK

10. Hybrid Smart Grid system architecture
6LoWPAN
ZigBee

11. Problem
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.

12. Network management-SIP
Signaling protocol
Point to point
Multiple points
Applications
Voice over Internet Protocol(VoIP)
Instant Message
Network Management

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

14. ZigBee-based Smart Grid system architecture

15. 6LoWPAN-based Smart Grid system architecture

16. Hybrid Smart Grid system architecture

17. SIP network management module
Instant Message
Subscribe / Notify

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

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

20. Conclusion and future work
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.

21. Conclusion and future work (cont.)
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.

22. Thanks for your attention.