1. Wireless Community Ajmal Nazir Green Dot Ltd

2. AGENDA Introduction Wireless Network Coverage Spectrum Planning NMS (Network Management System)

3. Green Dot Ltd “A Year is an eternity in Networking” Wireless Define our community Geographically based Interest based Define our Scope Cost Coverage services

4. Green Dot Ltd Wireless Networking

5. Green Dot Ltd Wireless Network Point to Multipoint

6. Green Dot Ltd PTMP

7. Green Dot Ltd PTMP and PTP

8. Green Dot Ltd Connecting to the Internet

9. Green Dot Ltd Connecting to the Internet

10. Green Dot Ltd Redundancy/Load Balancing Mesh protocol Capacity Redundancy scalability

11. Green Dot Ltd Simple Mesh Network

12. Green Dot Ltd Access Point Radio for ACCESS network (2.4G) for the users Radio for BH network (5G) for the AP’s (PTP or PTMP) In built switch Outdoor enclosures

13. Green Dot Ltd Coverage

14. Green Dot Ltd Wireless Coverage

15. Green Dot Ltd

16. Coverage FREE SPACE Budget = 90db Window (3db) Wall (6-10db) 1/2/3 walls Roof(metal/wood) (3-10db) Multipath (4db)

17. Green Dot Ltd Distance Chart Budget (db)Distance (m) 90300 84150 7875 7237.5 6619 609.5 545

18. Green Dot Ltd Coverage Analysis

19. Green Dot Ltd RF Mapping Tools

20. Green Dot Ltd Spectrum Planning

21. Green Dot Ltd 802 Standards 802.11/a/b/g/n 802.16/a/d/e/m 802.20 802.1x

22. Green Dot Ltd 2.4 Spectrum 802.11b/g Channels 1 to 11 Each channel is 22 MHz in size Channel spacing is 5 MHz

23. Green Dot Ltd 2.4 Spectrum

24. Green Dot Ltd Channel Planning

25. Green Dot Ltd Interference CSMA/CA (Carrier Sense Multiple Access Collision Avoidance) Reduce through put Change channel/power Directional antennas/shielding

26. Green Dot Ltd NMS (Network Management System)

27. Green Dot Ltd Security 802.1x 802.11i WEP (RC4 stream cipher) WPA (RC4) AES/DES WPA2/RSN (AES block cipher) Authentication Server

28. Green Dot Ltd NMS (Network Management System) Security NAT/DHCP Routing/firewalls Traffic engineering http P2p Mail RTP Measure usage Speed (512kbps/1Mb/2Mb…11Mb) Traffic usage (1/5/10G)

29. Green Dot Ltd Operations Monitoring of nodes Capacity planning Usage patterns Redundancy SLA’s

30. Green Dot Ltd Multi Antenna System Upto extra 10db Extended range Robust and reliable

31. Green Dot Ltd Multipath

32. Green Dot Ltd Other Tools Space Division Multiple Access (SDMA) Directional Antennas Receivers Channel Bonding

33. Green Dot Ltd Other Factors SSID’s – Virtual mesh networks Roaming FREE wall gardens Public Safety

34. Green Dot Ltd Questions and Answers ? Ajmal Nazir