1. System Design of Internet-of-Things for Residential Smart Grid
Viswanath, Sanjana Kadaba, et al
arXiv preprint arXiv:
Prepared by Shriya Parthasarathy

2. OUTLINE Elements of the IoT IoT Layers Protocols
Features of Universal Home Gateway
System Setup
Results and Discussion
Prepared by Shriya Parthasarathy

3. IoT Layers Device Layer
layer consists of sensors, actuators, smart plugs etc
Network Layer
connects device layer to application layer.
Cloud management layer
data storage and information retrieval
Application Layer
services to the end users
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4. IoT Layers
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5. Protocols RESTful HTTP Lightweight and easy to implement CoAP
Specialized web transfer protocol for using with constrained devices and networks
MQTT
Designed for constrained devices and low bandwidth, high-latency or unreliable networks
XMPP
Enables near-real-time exchange of structured yet extensible data between network entities
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6. IoT Features for Universal Home Gateway
Security
Provisioning
Interoperability
Latency
Massive number of devices
Scalability
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7. System Setup
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8. System Setup (cont.) Overall setup
Application layer and cloud management layer are implemented within the cloud server
Grid service, energy management, Home Automation service
Area ID, Family ID, Device ID, User ID, Gateway ID, Node ID
Protocols
XMPP and RESTful HTTP
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9. System Setup (cont.) Gateway Side
Openfire for massive number of devices, low latency and provisioning
UHG for interoperability and scalability
Consumer Side with Mobile Apps
GCM for real-time notifications
Mobile Application for user interface
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10. Results and Discussion
Latency is low for sending a message from client (mobile app) to cloud server (0.0710s)
Latency to control a node from gateway and get acknowledgement is higher (0.7852s)
Limited processing speed of gateway
Broadcast message (through AID) s
one-to-one message (through JID) from openfire to UHG takes s
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11. Results and Discussion (cont.)
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12. QUESTIONS?
Prepared by Shriya Parthasarathy