1) The document proposes Aura, a framework that uses IoT devices to create a localized mobile cloud for computation offloading. This allows computations to be outsourced to proximate devices for better security, performance and mobile computing. 2) Aura's architecture includes mobile agents, IoT devices that perform outsourced tasks, and a controller that monitors the localized IoT cloud. 3) An experimental implementation of Aura ported MapReduce to IoT devices and demonstrated a word counting task, showing the feasibility of localized computation offloading using proximate devices.

1. SECuRE and Trustworthy
Computing Lab
Aura: An IoT based Cloud Infrastructure for
Localized Mobile Computation Outsourcing
Authors
Ragib Hasan, Md Mahmud Hossain, and Rasib Khan
SECuRE and Trustworthy computing Lab (SECRETLab)
University of Alabama at Birmingham
Presenter: Ragib Hasan, Assistant Professor, Dept. of Computer
and Information Sciences, UAB
http://secret.cis.uab.edu
CLOUD
COMPUTING
IoT

2. SECuRE and Trustworthy
Computing Lab
Do Clouds/computations always need to be
stationary (and far far away)?
Today’s clouds are all stationary, located far away from
users, and are housed in dedicated cloud data centers.
But sometimes, users need to perform local computation
offloading, sending data to resources close to them.
Why?
 Security
 Performance
 Mobile computing
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3. SECuRE and Trustworthy
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How can we use the power of clouds, while
doing localized computation offloading?
Solution:
 Outsource computation locally
 Use idle or underutilized local devices
 Use the idea of bidding and micropayments to
create a sustainable computation ecosystem
 Use the cloud computing paradigm to manage
services
 Make the computation and data follow the user
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4. SECuRE and Trustworthy
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In our grand vision, the cloud should follow
the user as she moves between locations
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5. SECuRE and Trustworthy
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Finding computing devices in a building:
Internet of Things (IoT) to the rescue!
 IoT devices are everywhere (approximately 18.2 billions)
 Leverage the WIDE availability of IoT devices for computation offloading
 Concept: a ‘traveling’ cloud using IoT devices for mobile devices
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6. SECuRE and Trustworthy
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Internet of
Things
M2M
Smart
Cards
Ubiquitous
computing
Web of
things
Wearables
Context -
aware
computing
Pieces of the Puzzle: Internet of Things (IoT)
 Future of computing,
communications, and services
 Self configuring capabilities
 Integrates…
 Machine-to-machine (M2M)
 Context-aware computing
 Wearables
 Ubiquitous computing
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7. SECuRE and Trustworthy
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Smart Spaces – IoT Ecosystems
 Homes, offices, etc.
 Smart things
 Interconnected devices
 Proximal/Remote communication
 IoT information network
 Cooperative decision making
 Send/Receive data
 Share contexts
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8. SECuRE and Trustworthy
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Cloud
Computing
Pay As You Use
Scalability
Highly
Automated
Utility Based
Reliability &
Sustainability
Device &
Location
Independent
Pieces of the Puzzle: Cloud Computing
 Elastic resource scalability
 On-demand provisioning
 Pay-as-you-go
 Complex problem solving
using inexpensive yet large
scale computing model.
 Distributed data processing
(e.g. MapReduce)
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9. SECuRE and Trustworthy
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Pieces of the Puzzle: Computation Offloading
 Offloading/ distributed
computation of mobile
applications using cloud
resources
 Augmented execution of
partial or full process using
virtually much more
powerful devices.
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Mobile Device
HW
OS
PaaS/IaaS Cloud
Virtual Machine
Virtual HW
OS
Partial/Full offloading
Process/Application
Process/Application

10. SECuRE and Trustworthy
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Our Approach
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11. SECuRE and Trustworthy
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Aura
Contributions
 Create a framework for outsourcing computations to IoT devices in a
building
 Create a mobile cloud using the IoT devices
 Proof of concept: Ported MapReduce to IoT devices
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12. SECuRE and Trustworthy
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Our solution, Aura: An IoT based Computation
Outsourcing Framework, creates a localized cloud
 Localized IoT-based cloud
 Physical proximity
 Uses available IoT devices
 Computation outsourcing
 Secure
 Less network b/w
 Supports interruption,
result preservation, and
resumption
 Increased battery lifetime
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13. SECuRE and Trustworthy
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Aura Architecture
 Mobile devices (agents)
 Smart phone, tablet, wearables, etc.
 IoT devices
 Perform outsourced computations
 Controller
 Monitors localized IoT cloud
 Communicational and
computational abstraction between
IoT devices and the M-Agent
 High end devices (Laptop, Smart
TV, etc.)
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14. SECuRE and Trustworthy
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Aura Operational Model (1)
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Mobile Agent
Controller
IoT NodeIoT Node

15. SECuRE and Trustworthy
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Aura Operational Model (2)
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Mobile Agent
Controller
IoT Node
3. Device Spec[req.]
4. Device Spec[resp.]
IoT Node

16. SECuRE and Trustworthy
Computing Lab
Aura Operational Model (3)
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Mobile Agent
Controller
IoT Node
3. Device Spec[req.]
4. Device Spec[resp.]
IoT Node

17. SECuRE and Trustworthy
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Aura Operational Model (4)
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Mobile Agent
Controller
IoT Node
3. Device Spec[req.]
4. Device Spec[resp.]
7. Submit Task Spec.
8. Task Ack.
IoT Node

18. SECuRE and Trustworthy
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Aura Operational Model (5)
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Mobile Agent
Controller
IoT Node
3. Device Spec[req.]
4. Device Spec[resp.]
7. Submit Task Spec.
8. Task Ack.
9. Submit Task
IoT Node

19. SECuRE and Trustworthy
Computing Lab
Aura Operational Model (6)
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Mobile Agent
Controller
IoT Node
3. Device Spec[req.]
4. Device Spec[resp.]
7. Submit Task Spec.
8. Task Ack.
9. Submit Task 10. Forward Task
IoT Node

20. SECuRE and Trustworthy
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Aura Operational Model (7)
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Mobile Agent
Controller
IoT Node
3. Device Spec[req.]
4. Device Spec[resp.]
7. Submit Task Spec.
8. Task Ack.
9. Submit Task 10. Forward Task
11. Results
IoT Node

21. SECuRE and Trustworthy
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Aura Operational Model (8)
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Mobile Agent
Controller
IoT Node
3. Device Spec[req.]
4. Device Spec[resp.]
7. Submit Task Spec.
8. Task Ack.
9. Submit Task
12. Forward Results
10. Forward Task
11. Results
IoT Node

22. SECuRE and Trustworthy
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Implementation and Experimental Results
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23. SECuRE and Trustworthy
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Experimental Environment
 Ubuntu 12.04 LTS
 Java Controller
 T-Mote Sky IoT node
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 Android Mobile Agent
 Contiki OS
 Cooja Simulator.

24. SECuRE and Trustworthy
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Experiment
 ‘Word Count’ using MapReduce
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25. SECuRE and Trustworthy
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Experimental Result
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26. SECuRE and Trustworthy
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Open Problems and Future Work
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Application &
use case scenarios
Plug & Play devices
Self-configuring protocol
Large scale
experiment &
evaluation
Incentive model
Security

27. SECuRE and Trustworthy
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Thank You
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SECRETLab@UAB
 Phone: 205.934.8643
 Fax: 205.934.5473
 Web: http://secret.cis.uab.edu/
Ragib Hasan
 Email: ragib@cis.uab.edu
 Web: http://www.ragibhasan.com/