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A Broadband Wireless Access network for the city of Lyon Group C  Alexis CHALMOT DE LA MESLIERE  Prem MARIANNIE  Viken TORAMANIAN  Vojtech KOTOUS 

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Presentation on theme: "A Broadband Wireless Access network for the city of Lyon Group C  Alexis CHALMOT DE LA MESLIERE  Prem MARIANNIE  Viken TORAMANIAN  Vojtech KOTOUS "— Presentation transcript:

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

4 Coverage

5 Size with BPSK modulation (edge of the cell) Coverage 1230 m m m 90 Size of one cell Nb of BS Quadrisector BS 1100 m m m 94 Size of one cell Nb of BS Trisector BS Outdoor Indoor Daylight Deep indoor

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

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

8 Traffic

9 Traffic (1/3)  Environment – Suburban  200 ≤ population density < 1000 inhabitants per square kilometre  Average user is active for 2 hours/day ServicesQoS Traffic 2007 Activity Total Amount VoIP 25% min/day G hours~730 GBit Websurfing, IP data 55%3 TBit/day2 hours3 TBit Video Conferences 10% include in Data - H hoursinclude in Data Mobility 10%300 GBit2 hours300 GBit Total~4 TBit/day

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

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

12 Technology

13 Antennas : European Antennas sector 120 ° Power : 13,5 dBm Base Station : Ericsson Type : RBS 6418 Power : 40 dBm Configuration: 5 MHz + 7 MHz TDD duplex mode CPE : Alvarion Type: BreezeMax (compatible) Choice of materials

14 CAPEX / OPEX

15 CAPEX evolution per year

16 OPEX per year

17 CAPEX/OPEX vs Income (Optimistic)

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

19 Conclusion

20 Conclusion and Upgrades  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)

21 Thank you for your attention Any questions ?


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