1. ICACT 2012 Performance Study on SNMP and SIP over SCTP in Wireless Sensor Networks Advisor: Quincy Wu Speaker: Chia-Wen Lu (Sally) National Chi Nan University Taiwan Date: 2012/02/21 1

2. Outline Wireless Sensor Network(WSN) ZigBee/6LoWPAN WSN management Simple Network Management Protocol(SNMP) Session Initiation Protocol (SIP) Stream Control Transmission Protocol(SCTP) SIP/SNMP over SCTP System architecture Conclusion and future work 2

3. Wireless Sensor Network (WSN) IEEE802.15.4 is a wireless communication standard protocol – Wireless personal area network – Characteristics: low data rate, low power consumption, short distance transmission Myriads of applications – Smart grids, home automation and so on 3

4. ZigBee/6LoWPAN 4 ZigBee ZigBee APS (Application Layer) ZigBee NWK (Network Layer) IEEE802.15.4 Date Link/Physical Layer 6LoWPAN Application Layer Transport Layer Network Layer (IPv6) LoWPAN IEEE802.15.4 Data Link/Physical Layer Protocol Stack IPv6 over Low power Wireless Personal Area Network (6LoWPAN)

5. ZigBee One popular technology in WSN Specify network and application layer protocols above IEEE802.15.4 ZigBee Local Area Network versus Internet – ZigBee devices can communication to each other in local area network – ZigBee devices can not directly communicate with servers on the Internet – An additional mechanism is required to translate ZigBee to TCP/IP 5

6. 6LoWPAN Many on-going efforts to introduce Internet Protocol (IP) into WSNs It would be better if have protocol can speak with TCP/IP without translation 6LoWPAN （ IPv6 over Low-Power Wireless Personal Area Networks ） – Based on IEEE 802.15.4 – Network layer – IPv6 6

7. ZigBee/6LoWPAN WSN Management No universal network management protocol standard to jointly manage heterogeneous ZigBee and 6LoWPAN devices. Application layer protocol – Session Initiation Protocol (SIP) – Simple Network Management Protocol(SNMP) 7

8. SIP and SNMP SIP – A signaling control protocol in Voice over Internet Protocol (VoIP) – Extensions: register, subscribe, notify, instant messaging (IM),presence, and so on SNMP – Monitor and configure network devices Application protocol – SIP/SNMP usually run over UDP/TCP 8

9. Stream Control Transmission Protocol (SCTP) SCTP is new reliable and message-oriented transport layer protocol Two powerful functions make SCTP a highly efficient and reliable transmission mechanism – Multi-homing – Multi-streaming 9

10. SCTP (Cont.) Multi-homing – Multiple network connection paths – Redundancy mechanism 10 Internet P1 P2 master backup sender receiver data

11. SCTP(Cont.) Muli-streaming – Classify data into different categories to be transferred by independent streams – Congestion control mechanism only slow down which stream occurs packets lost 11 Application SCTP IP Application SCTP IP association Stream 0 Stream 1 Sender Receiver data1 data2

12. SIP/SNMP over SCTP ZigBee/6LoWPAN WSN – Lossy communication channels – Low data rate – Small packet sizes Example: ZigBee WSN – 2.4 GHz radio band – Data rate of 250 kbps SIP over SCTP or SNMP over SCTP may be a good idea to increase the management performance in WSNs 12

13. System Architecture ZigBee Network 13

14. System Architecture 6LoWPAN Network 14

15. SIP network management module 15 Instant Message

16. Instant Message Module Servers can send commands to devices. Example: Shutting down or starting devices Changing devices settings 16

17. Conclusion and future work Some interesting future work would be analyzing the behavior of SIP and SNMP over SCTP in WSNs by simulation tools, and verified its performance in real testbeds. This would allow network administrators to wisely choose the best management protocol to manage their WSNs. 17

18. Thanks for your attention. 18 NCNU: http://www.ncnu.edu.tw/ncnuweb/http://www.ncnu.edu.tw/ncnuweb/