Designing a sensor network for developing countries

1. A Design of
Distributed Storage System
over HTTP
for Collecting Sensor Data
Sayed Ahmad Naweed
Supervisor: Dr. Yokoyama Teruaki
4th June 2016
1

2. Environmental
Monitoring
Transportation
Industry
Weather
Military
Medical
Intelligent
Transportation
System
Background
2

3. Application of Sensor
Technology
Environmental
Monitoring
Transportation
Industry
Weather
Military
Medical
3

4. Collecting Sensor Data
4

5. Collecting Sensor Data
5

6. Collecting Sensor Data
6

7. Collecting Sensor Data
7
Data
Collection

8. Afghanistan IT Infrastructure
8
Afghanistan National Data
Center (ANDC)
e-Government
e-Commerce
m-Government
Cloud Computing
Sources: http://andc.gov.af/en/page/1098

9. Possible Image of Sensor
Network in Afghanistan
9
Sensors
ANDC Location
App
App
ANDC

10. Sensors
DC Location
Sensors
DC Location
App
App
ANDC
Challenges of Data Collection
①Storing sensor
data to a far
distant server
Long Distant
10

11. Sensors
DC Location
App
App
ANDC
Challenges of Data Collection
②Single Point of
Failure
11

12. 12
Sensors
DC Location
App
App
ANDC
Challenges of Data Collection
③Traffic Congestion
12

13. Our Proposed Design
13

14. Copying Data to the Core
Storage
14

15. Nature of Sensor Data
15
Sensor
Data
Key
Time
Value
1
2
3
Usually sensor data
is stored in time
series format.
(Key, Time, Value)

16. Data Accessing Mechanism
16
1

17. Data Accessing Mechanism
2
1
17
2
1

18. Data Accessing Mechanism
2
1
18
2
1
Data Verification Respond
3

19. Data Accessing Mechanism
2
1
19
2
1
Data Verification Respond
3
Send Data
4

20. Advantage of the Proposed
System
1
Data Availability
①Link disconnection
between Core and Edge
Node
20

21. Advantage of the Proposed
System
1
Data Availability
①Link disconnection
between Core and Edge
Node
②Core Storage failure
21
2

22. Advantage of the Proposed
System
1
Data Availability
①Link disconnection
between Core and Edge
Node
②Core Storage failure
22
2

23. Our Contributions
Transferring sensor
data to the far-
distant Core Node
1
23
Core
Storage
Edge
Storage
Sensor
Network

24. Our Contributions
Developers design
applications by
accessing sensor
data
2
24
Core
Storage
Edge
Storage
Sensor
Network

25. Originality
Available Systems
Distributed Database
System
• Mostly in one location
inside a SAN
• Requires Consistency
Our System
Distributed Storage
System
• Distributed
geographically in far-
distance places
• No consistency
because of sensor data
25

26. Limitation
• The CAP theorem:
– Consistency
– Availability
– Partitioning
Trade-off
Availability
Consistency
26

27. Challenge
27
How do clients
find or switch to a
nearest edge
storage?

28. Experiment
28
InternetCore
Storage
JapanAfghanistan
cURL
1

29. Experiment
29
Internet
Edge
Storage
Core
Storage
JapanAfghanistan
cURL
cURL
1
2

30. Result
30
Internet
Edge
Storage
Core
Storage
JapanAfghanistan
cURL
cURL
4.3
2.5
3.5
4.5
2.2
2
1.2
1
2
0.5
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
8:00 9:00 10:00 11:00 12:00
Data from
core Storage
Data from
Edge Storage
Monday 23rd May 2016

31. Future Work
31

32. Future Work
32
P2P Network

33. Thank you
“Things should be made as simple as possible, but no simpler.”
Albert Einstein
33