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A Broadband Wireless Access network for the city of Lyon

A Broadband Wireless Access network for the city of Lyon. Group C Alexis CHALMOT DE LA MESLIERE Prem MARIANNIE. Viken TORAMANIAN Vojtech KOTOUS Yohan GUILLET. Wireless Telecommunication ISEP 2006/2007. Choice. Choice of technology.

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A Broadband Wireless Access network for the city of Lyon

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  1. A Broadband Wireless Access network for the city of Lyon Group C • Alexis CHALMOT DE LA MESLIERE • Prem MARIANNIE • Viken TORAMANIAN • Vojtech KOTOUS • Yohan GUILLET Wireless Telecommunication ISEP 2006/2007

  2. Choice

  3. Choice of technology With the Wimax technology, we assign to our network the bigger capacity and we share all the resources for everybody. • Nomadic and mobility (60 km/h) and also regional roamingwith Wimax802.16e (SOFDMA modulation). • TDD enables adjustment of the downlink / uplink ratioto efficiently support asymmetric downlink / uplink traffic. Two 15 MHz TDD bands on both sides of the 3.5GHz only licensed frequency for Wimax in France:

  4. Coverage

  5. Coverage Size with BPSK modulation (edge of the cell) Deep indoor Indoor Daylight Outdoor Size of one cell Nb of BS 470 m 94 740 m 41 1100 m 27 Trisector BS Size of one cell Nb of BS 530 m 90 830 m 38 1230 m 25 Quadrisector BS

  6. Interferences The computing of the C/I is very important to make a choice of cell patern. 7.794 0.287 Less than 7.794 2.404

  7. Network architecture synthesis Wireless Access • 4 antennas by station- 4 frequencies by station- high capacity : 10x4 actives users- Voice, Video conference, websurfing possible Wimax Network architecture - Trisector Base Station- Important size cell- Low interference - High C/I (up to 7 dBm)- Best quality

  8. Traffic

  9. Services QoS Traffic 2007 Activity Total Amount VoIP 25% 200 000 min/day G.711 5 hours ~730 GBit Websurfing, IP data 55% 3 TBit/day 2 hours 3 TBit Video Conferences 10% include in Data - H.264 2 hours include in Data Mobility 10% 300 GBit 2 hours 300 GBit Total ~4 TBit/day Traffic (1/3) • Environment – Suburban • 200 ≤ population density < 1000 inhabitants per square kilometre • Average user is active for 2 hours/day

  10. Number of cell based on criterium (2/3)

  11. Traffic (3/3) • 45 Cells are needed 1st year for 1000 simultaneous users • Capacity upgrades are seen on the graph.

  12. Technology

  13. Choice of materials Antennas : European Antennassector 120 °Power : 13,5 dBmBase Station : EricssonType : RBS 6418 Power : 40 dBmConfiguration: 5 MHz + 7 MHz TDD duplex mode CPE : Alvarion Type: BreezeMax (compatible)

  14. CAPEX / OPEX

  15. CAPEX evolution per year

  16. OPEX per year

  17. CAPEX/OPEX vs Income (Optimistic)

  18. Total balance after each year from 2007 (optimistic) We are profitable after four years

  19. Conclusion

  20. Fully operationnal Mobile Wimax solution from 2007 Full coverage and enough capacity for Lyon Profitability reached after four years (2010) Big profits to improve the network even more after 2010 Optimisation of the load of the network Different frequency band for specific areas Improved Mobility (speed,handover) Conclusion and Upgrades

  21. Thank you for your attention Any questions ? http://lyontel.free.fr

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