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Seminar WSNU i D i WSN i l i i f f i d Using Dynamic WSNs in smart logistics for fruits and pharmacy Sensys ’11 Ambient Systems
Presenter :Emanuel DiasPresenter :Emanuel DiasStnr :4097416
Slide 1 of 20Challenge the future
Outline
• Introduction• Introduction • Ambient systems• Monitoring of perishable products
• Distributed sensing• Distributed sensing• Network Infrastructure requirements• Ambient Network Infrastucture• Ambient protocol stack• Ambient protocol stack
• DDI ,MAC ,ARTP ,RUP• Ambient middleware• Messaging efficiencyMessaging efficiency• Lessons learend• Conclusion
Slide 2 of 20Challenge the future
Introduction
•Temperature-Controlled Supply Chain•Temperature-Controlled Supply Chain• Problems
Challenges• Challenges
Slide 3 of 20Challenge the future
Ambient systems• Smartpoints
• (chipcon CC2340 radiochip) 8bit 8051 and 2mb flash memory
• Connect box
Slide 5 of 20Challenge the future
Monitoring of perishable products• Distributed sensing
• Shelf predication algorithm travels along with products
• Tagged sensors
• Infrastructure sensors
Slide 6 of 20Challenge the future
Network infrastructure Requirements
• Dynamics
• Reliability and Congestion control
• High scalabilityg y
• Multiple network coexistence
Slide 7 of 20Challenge the future
Ambient Network infrastructure
•Dynamic WSN (DWSN)•IEEE 802 15 4 PHYIEEE 802.15.4 PHY
•Two layers•Infrastructure•Smartpoints
Slide 8 of 20Challenge the future
Ambient protocol stack:
• ARTP( Ambient reliable Transport protocol)
• RUP-Remote update Protocol
• DDI-Device Driver Interface
• RRP –rapid reader protocol
• MAC-Medium access control
Slide 9 of 20Challenge the future
ARTP- Ambient reliable Transport protocol
• End to End reliability protocol• End –to End reliability protocol
• Criteria
• Three phases
• Cache• Cache
Slide 10 of 20Challenge the future
ARTP vs TCP
• Fixed size segments
• Smaller overhead
• Cross –layer approach
• Cache prevent unnecessary forwarding
• Congestion control is different
Slide 11 of 20Challenge the future
RUP-Remote update Protocol
• Designed to disseminate large files
• Based on deluge dissemination protocol• Based on deluge dissemination protocol
Slide 12 of 20Challenge the future
MAC
• TDMA Based protocol
• Contention free (similar to LMAC)
• Contention based (CSMA)
• Priority levels & Lifebeat signal
Slide 14 of 20Challenge the future
Lessons learned
• High delivery ratio demand• High delivery ratio demand
• Scalability and available bandwidth
• Congestions
• Small available bandwidthSmall available bandwidth
Slide 19 of 20Challenge the future
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