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Il progetto CSP White FI

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Presentazione al Seminario FUB del 4 luglio 2011 "La sfida per l’accesso dinamico e flessibile allo spettro: radio cognitiva, spazi bianchi e nuovo quadro regolatorio "

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Il progetto CSP White FI

  1. 1. La sfida per l’accesso dinamico e flessibile allo spettro: radio cognitiva, spazi bianchi e nuovo quadro regolatorio CSP WhiteFi project Seminari FUB – Bologna 4 luglio 2011 Roberto Borri Direzione Ricerca e Sviluppo, CSP
  2. 2. dell’autorizzazione alla sperimentazione Si ringrazia il MISE – Dip Com per la concessione e la società Rete Capri per la disponibilità all’utilizzo del canale 57 di cui sono titolari del diritto d’uso nella Provincia di Torino. WhiteFi @ 763 MHz
  3. 3. Digital divide: Non solo hotspot, bensì “Wide area coverage” @ wifi-like performance Internet delle cose (IoT): Dal “skeduled data gathering“ al “Near-always on sensor access” Due grandi necessità ancora irrisolte
  4. 4. 4 Valli di Lanzo / Val di Viù
  5. 5. 5 Val di Viù
  6. 6. System parameters WhiteFi IEEE 802.11h Operational channel 5MHz @ 763MHz 20MHz @ 5GHz Tx Power 18 dBm 22 dBm AP antennas 70° span 9 dBi gain 150° span 8 dBi gain STA antennas Omnidir. 6 dBi gain Omnidir. 5 dBi gain 6
  7. 7. 7 Lab test: throughput assessment • Single UDP flow
  8. 8. 763MHz AP antenna 8
  9. 9. Antennas 9 5GHz Antennas 763MHz Antennas
  10. 10. 5GHz coverage 10
  11. 11. 763MHz coverage 11
  12. 12. Throughput with a 2Mb/s UDP flow from AP to station (downlink) 12
  13. 13. Throughput with a 2Mb/s UDP flow from station to AP (uplink) 13
  14. 14. Throughput at 763MHz with a 6Mb/s UDP flow 14
  15. 15. CSP roadmap for SDR WhiteSpace system • Objective: – development of a cognitive network of software-defined wireless nodes operating in the TV white spaces • Main characteristics – DVB-T specific sensing (cyclic prefix correlation) – High spectral efficiency • Full bandwidth exploitation • Adaptive coding and modulation schemes – Relaying • Inter-frequency • Multi-hop 15
  16. 16. CSP roadmap for SDR WhiteSpace system • 2011-Q2 – Study and definition of the whole system (PHY layer, MAC layer, Sensing, network structure) – Development of the spectrum sensing module – Development of the transceiver module • 2011-Q3 – Lab testing of the sensing module – Development of the transceiver module • 2011-Q4 – Lab testing of the transceiver module – Integration of the whole system, lab and field testing • 2012: improvements • higher spectral efficiency • better radio resource management • relaying 16
  17. 17. CSP roadmap for SDR WhiteSpace system • SDR prototype architecture – AP and STA nodes • General-purpose workstations (Linux-based) • Ettus USRP2 radio front-ends • Critical aspects – High latency of the USRP ↔ workstation connection – Limited overall bandwidth – Planned improvement: bus-based platform i.e. Microsoft SORA 17
  18. 18. 18 Contatti CSP innovazione nelle ICT Sede via Livorno 60 - 10144 Torino Edificio Laboratori A1 Tel +39 011 4815111 Fax +39 011 4815001 E-mail: info@csp.it Seconda sede operativa Villa Gualino - Viale Settimio Severo 63 10133 Torino www.csp.it Roberto Borri R&D Department mail: roberto.borri@csp.it tel: +39 0114815184

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