hwl - a high performance wireless sensor research network

6/13/2012

6/13/2012

HWL – A High-Performance Wireless Sensor Research Network

Markus Scheidgen, Anatolij Zubow and Robert SombrutzkiHumboldt Universität zu Berlin

HWLhttp://hwl.hu-berlin.de http://metrik...de/projects/click-watch

http://hwl.hu-berlin.de

http://hwl.hu-berlin.de

http://metrikforge.informatik.hu-berlin.de/projects/click-watch

http://metrikforge.informatik.hu-berlin.de/projects/click-watch

Markus Scheidgen: H

WL – A

High-Perform

ance Wireless Sensor R

esearch Netw

ork

HWL: Commodity Hardware

2

‣120+ Nodes

‣indoor and outdoor

‣dense and sparse

‣short and long links

‣stationary and mobil nodes

http://www.saferproject.net/

Earthquake Early Warning

TrafficSurveillance

5





TrafficSurveillance

5

time

am

plitu

de x

spectr

al part

icip

ation o

f 5-1

5 H

z



Markus Scheidgen: H

WL – A

High-Perform


esearch Netw

ork

HWL: Research Topics

§Opportunistic Routing, Network Coding, MIMO

§ Indoor Localization1

§Mobil Nodes

§ Security for WSN/WMN

§Model Driven Software Development

§ Experiment Frameworks2

6

1 http://www.youtube.com/watch?v=HJZRfLITxQw

2 http://www.youtube.com/watch?v=c3RmUXvczV0

http://www.youtube.com/watch?v=HJZRfLITxQw

http://www.youtube.com/watch?v=HJZRfLITxQw

http://www.youtube.com/watch?v=c3RmUXvczV0

http://www.youtube.com/watch?v=c3RmUXvczV0

data

analysis

results

WSNs

data

G

analysis

results

HWL ! A test-bed for HP-WSNs

dataanalysis

resultsrequest

HP-WSNs

Markus Scheidgen: H

WL – A

High-Perform


esearch Netw

ork

ClickWatch: Developing WSNs Applications

7

4draw conclusions

1design & control experiments

2collect & manage data

3analyze & visualize

hypothesis

testbed

data

results

Markus Scheidgen: H

WL – A

High-Perform


esearch Netw

ork

8

ClickWatch: Experimentation

Markus Scheidgen: H

WL – A

High-Perform


esearch Netw

ork

4

ClickWatch: Problems with WSN Experiments

(mostly) unstructured data representation (e.g. log-files)

analysis based on scripts and log-files:

➡ unsafe

➡ not reusable

➡ not reproducible

➡ not automated

Solution:

§ give all data a structure through meta-data and types

§ record data and meta-data in a database

§ use type-safe implementations for analysis or even uses model transformation (structural transformation)

1design & control experiments

2collect & manage data

3analyze & visualize

4draw conclusions

Markus Scheidgen: H

WL – A

High-Perform


esearch Netw

ork

10

ClickWatch: Experimentation

1Scheidgen, Zubow, and Sombrutzki: ClickWatch - An Experimentation Framework for Communication Network Test-beds, IEEE WCNC 2012

http://www.caleydo.org/publication/2010_PACIFICVIS_Caleydo.pdf




Markus Scheidgen: H

WL – A

High-Perform


esearch Netw

ork

11

Click API software

Element

Element

Element

CompoundHandler

Han

dler

Net

wor

k In

terf

ace

ClickWatch: Structured Data

0.1

0.1

0.1

1

1

1

5

5

5

5

20

20

20

20

20

50

50

50

50

50

100

100

100

100

Sensor data rate (bit/s)

To

tal n

um

be

r o

f se

nso

r n

od

es

Total data rate on application layer (Mbps)

102

103

104

105

106

101

102

103

(A) (B)

(C)

(D)

Markus Scheidgen: H

WL – A

High-Perform


esearch Netw

ork

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ClickWatch: Data Rates in WSN Applications

G

G

G G

G

G

G G

singl

e ga

tew

ay

mul

tiple

gat

eway

s

multi node data store single node data store

Markus Scheidgen: H

WL – A

High-Perform


esearch Netw

ork

ClickWatch: Two Ways to Scale

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Markus Scheidgen: H

WL – A

High-Perform


esearch Netw

orkClickWatch: Storage Performance Depends on Granularity

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101 102 103 104 105100

101

102

103

104

105

106

107

Write data rate (kbit/s)

Rec

ords

per

sec

ond

SQLHBASELOGS

13 Rec/s

B w/ 1000 nodes

23 Rec/s

180 Rec/s

B w/ 100 nodes

Markus Scheidgen: H

WL – A

High-Perform


esearch Netw

ork

Summary

§ Some applications require Large nodes.

§ Research & development requires a different platform then a WSN in production.

§ if there are large quantities of different types of data involved, things do not have to become messy.

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hwl - a high performance wireless sensor research network

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