1. SCALE: The Safe Community Awareness and Alerting Network
Kyle Benson et al
University of California, Irvine
GCTC SCALE team

2. General IoT Architecture
Data Exchange
Cloud
Services
Networking
Devices

3. “Democratizing safety by bringing the Internet of Things (IoT) to everyone”
Analytics / Alerting Cloud
Dispatch Center
First responders arrive
Long-range wireless antenna
Yes!
Emergency?
Resident / Caretaker
Resident in distress
SCALE sends emergency message
Worked in MoCo
Resilient communications: multiple protocols, fault and congestion-tolerance, scalability, QoS

4. SCALE Client Architecture
Multi-layer architecture
Data exchange is key
Supports heterogeneous devices / technologies
Client broken into modules
Asynchronous / parallel processing of tasks
New sensors, protocols, networks added via inheritance
Potential interesting projects:
Client performance comparison (threaded vs. ‘circuits’ vs. async)
Adding new sensors
Mobile (Android?) app
Splitting data analytics pipeline across multiple devices (pushing analytics down to client)

5. SDN-enabled Publish-subscribe
SDN NOS
Pub-sub app runs on clustered Network Operating System (NOS) controller instances. It acts as the pub-sub control plane, managing pub-sub routing via a topic  tunnel mapping and installing flow rules on network devices.
3) Return event  tunnel ID mapping
Topic Mgmt
Pub-Sub Mgmt
Controller
2) Forward request to responsible NOS instance
5) Calculate and install routes
4) Subscription request
Network devices act as pub-sub data plane brokers by routing publications purely in-network via tunneled flows.
1) New topic
request
Network hypervisor provides a virtual tenant network controllable via SDN NOS
Could eliminate 1 by using a source port -> topic string mapping gleaned by NOS
----- Meeting Notes (10/10/16 13:33) -----
these are virtual switches
FIXME: Need to get rid of term ‘tunnel’
6) Published messages flow thru tunnel
Edge services
IoT devices and services express interest in topics to receive published data or register topics they publish to receive a tunnel ID.