Transcript Presentation Bohechio Village Area Network

eDevelopment
Technologies to empower, enrich and interconnect
Pilot Project - Bohechio Village Area Network
March of 2001
Michael L. Best
Leandro Burnes
Marco Escobedo
Hani Shakeel
Agenda
• Bohechio, Dominican Republic
• Village Area Network
• Equipment
• Network Coverage
• Results of Deployment
• Immediate Applications
• Future Applications
• What’s Next
• Pictures
•Q&A
Bohechio, Dominican Republic
• Located in the center of the
Dominican Republic.
• Population is approximately
10,000 people.
• Main economic activities are
agriculture and livestock.
• Prior to Wireless Village Area
Network, only 5 telephone lines.
Village Area Network
• 256 kps VSAT connection at Lincos Container.
• Point to Point Link between Lincos and Base Station.
• Omni-directional antennas placed at Base Station.
• Point to Point link to Lincos.
Equipment
• 4 - Omni-directional 19dbi antenna
• 2 - PtP 24dbi antenna
• 8 - 11mbps Gold PC Cards
• 1 PCI Adapter
• 1 COR and 1 ROR
(1 COR can support 16 RORs on one Channel,
and 3 collocated channels are possible.)
• Orinoco Client and AP manager software
• 1 UPS
• 1- 5dbi antenna and 1 Yagi 14dbi antenna for tests
Results of Deployment
Tests conducted with:
• 5dbi and 14dbi Antennas
• Orinoco Client Manager - Link Test Software
Results of Deployment
11
11
Coverage:
• PC Cards ~2dbi Antenna
9
• 5dbi Antenna
8
• 14dbi Yagi Antenna
4
6
3
Site #
1
2
5
7
10
1
2
3
4
5
6
7
8
9
10
11
12
13
Location
Lincos Front Park
Lincos Container
Police Station
School
Ensanche Castillo
Rural Clinic
Ensanche Castillo
Water Tanks
Lago Sabana (west)
South Bohechio
Bohechio North
River South Bohechio
Road to Bohechio
Dist. (ft)
238
289
322
364
840
945
1050
1522
1575
1575
1837
3517
4252
Network Coverage
• 1st Wireless Village Network
• Roughly 3500 feet
• LOS
• Fixed vs. Mobile
Distance vs SNR
30
20
15
SNR (dBi)
10
5
10
50
15
22
15
75
15
75
18
37
35
17
42
52
94
5
84
0
36
4
32
2
28
9
0
23
8
SNR (dBi)
25
Distance (ft)
Immediate Applications
• Lincos, School, Clinic and Municipal Building
Immediate Applications
• IP Telephony
Future Applications
• Mobile VoIP and Radio Bohechio
What’s Next
• School Connectivity - April 2001
• Telecenters
• Better and cheaper antennas - wearable?
• Expand mobility based applications
Pictures
Question and Answer
Contact Information:
• Edevelopment Group
• The Media Laboratory
• Massachusetts Institute of Technology
• Room E15-309
• 20 Ames Street
• Cambridge, MA 02139 USA
• http://edevelopment.media.mit.edu/