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

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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

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Introduction

•Temperature-Controlled Supply Chain•Temperature-Controlled Supply Chain• Problems

Challenges• Challenges

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Ambient systems• Smartpoints

• (chipcon CC2340 radiochip) 8bit 8051 and 2mb flash memory

• Connect box

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Monitoring of perishable products• Distributed sensing

• Shelf predication algorithm travels along with products

• Tagged sensors

• Infrastructure sensors

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Network infrastructure Requirements

• Dynamics

• Reliability and Congestion control

• High scalabilityg y

• Multiple network coexistence

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Ambient Network infrastructure

•Dynamic WSN (DWSN)•IEEE 802 15 4 PHYIEEE 802.15.4 PHY

•Two layers•Infrastructure•Smartpoints

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Ambient protocol stack:

• ARTP( Ambient reliable Transport protocol)

• RUP-Remote update Protocol

• DDI-Device Driver Interface

• RRP –rapid reader protocol

• MAC-Medium access control

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ARTP- Ambient reliable Transport protocol

• End to End reliability protocol• End –to End reliability protocol

• Criteria

• Three phases

• Cache• Cache

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ARTP vs TCP

• Fixed size segments

• Smaller overhead

• Cross –layer approach

• Cache prevent unnecessary forwarding

• Congestion control is different

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RUP-Remote update Protocol

• Designed to disseminate large files

• Based on deluge dissemination protocol• Based on deluge dissemination protocol

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DDI-Device Driver Interface

• Asynchronous communications

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MAC

• TDMA Based protocol

• Contention free (similar to LMAC)

• Contention based (CSMA)

• Priority levels & Lifebeat signal

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Ambient middleware (AmbientMW)

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Messaging efficiency

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Messaging efficiency continued

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Example deployment

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Lessons learned

• High delivery ratio demand• High delivery ratio demand

• Scalability and available bandwidth

• Congestions

• Small available bandwidthSmall available bandwidth

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Conclusions

• Distributed processing• Distributed processing

• Network /system architecture

• Remote upgrades

• Deployment challenges• Deployment challenges

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