NICT s Activities on TVWS Communication Systems

Transcription

1 NICT s Activities on TVWS Communication Systems Dr. Takeshi Matsumura, Dr. Kentaro Ishizu Smart Wireless Laboratory, Wireless Network Research Institute, NICT Glasgow TV Whites Spaces Pilot Event May 14,

2 NICT s R&D on TV White Space Standardization IEEE af / IEEE m / IEEE / IEEE b IEEE DySPAN-SC / IEEE / IEEE ITU-R WP5A System Development White-space Database White-space Devices Field Trials Long-distance Heterogeneous multi-hopping Mobile broadband Practical Application 2

3 TV WSDB developed by NICT Viewer Viewer TVWS Database I/F (U.S. FCC) (U.K. OFCOM) I/F (IETF PAWS) (Singapore) Plug-in (Others) I/F (PAWS) I/F (PAWS) I/F (PAWS) I/F (PAWS) (CDIS/CM) (RLSS) (Spectrum Manager) (Manager) TVWS Devices IEEE IEEE af IEEE White Space LTE Co-existence Wireless LAN Wireless RAN 3

4 License Agreement with ICTO 5/07-1.html 4

5 NICT s R&D on TV White Space Standardization IEEE af / IEEE m / IEEE / IEEE b IEEE DySPAN-SC / IEEE / IEEE ITU-R WP5A System Development White-space Database White-space Devices Field Trials Long-distance Heterogeneous multi-hopping Mobile broadband Practical Application 5

6 IEEE af system High power type (Output=30dBm) High power type (Output=10dBm) Usable as Access Point (AP) or Station (STA) according to software configuration Item Standard Operating freq. Multiple access TX signal Modulation Occupied BW RF power Standard Specification IEEE af-2013 (published in Feb. 2014) MHz CSMA/CA OFDM BPSK, QPSK, 16QAM, 64QAM 4.8 MHz 30 dbm max (High-power type) IEEE af 6

7 WS LTE system (enb and UE) NICT Server room Evolved packet Core TVWS Database Internet enb UE Item TVWS enb TVWS UE 3GPP release Rel-8 Duplex mode FDD, TDD Spatial multiplexing SISO Operating freq MHz Channel bandwidth 5/10/20 MHz Duplex spacing > 80 MHz (FDD) Maximum Tx Power 19 dbm 15.5 dbm Size (W x L x H) [mm] 170x420x300 84x133x30 The Spectrum mask satisfies ETSI device emission class 5. 7 LTE enb for TVWS Network TV band Terminal USB plug LTE UE Adaptor

8 WS LTE system (smart phone) Capable of switching between TVWS and commercial band Same size, weight and OS as commercial smart phone TDD for WS, FDD for commercial band Item Supporting frequency band Bandwidth Output power Modulation Duplex mode Multiple access Specification UHF : MHz (TVWS) Band 1 : 1,920 1,980 MHz (uplink) 2,110 2,170 MHz (downlink) 5, 10, 20 MHz Up to 20 dbm BPSK / QPSK / 16QAM / 64QAM BPSK : Control channel 64QAM : Downlink data channel UHF : TDD Band 1 : FDD OFDMA (downlink) SC-FDMA (uplink) 8

9 NICT s R&D on TV White Space Standardization IEEE af / IEEE m / IEEE / IEEE b IEEE DySPAN-SC / IEEE / IEEE ITU-R WP5A System Development White-space Database White-space Devices Field Trials Long-distance Heterogeneous multi-hopping Mobile broadband Practical Application 9

10 20m 12m 12m Results scenario 1 and 2 (long-distance) Takashimizu BS CPE EIRP:3.8W EIRP:966mW CPE EIRP:3.8W Sadato The center BS EIRP:2.9W 10

11 Results of fixed point-to-point link (IEEE af) 27dBm, 7.6 dbi London Bridge King s College London Guy s Campus ビッグベン 通信拠点 1 通信拠点 km, 2.2Mbit/s 3.7 km 27dBm, 7.6 dbi King s College London Denmark Hill Campus 11

12 Results of mobile broadband system (LTE Rel.8) King s College London (KCL), Denmark Hill Campus Point A WS UE B A Duplex Mode Frequency Bandwidth WS enb Tx Power Spatial Multiplexing FDD, TDD FDD DL: 714 MHz; UL: 626 MHz, TDD: 682 MHz 20 MHz FDD: 14.2 dbm, TDD: 16.2 dbm SISO WS enb PDSCH Modulation 64QAM TDD Subframe Ratio DL:UL = 4:4 Point B 12 FDD mode 45.4 Mbit/s TDD mode 19.5 Mbit/s

13 Conclusions White Space Database Following rules of FCC / Ofcom / Singapore /Philippine IETF PAWS interface White Space Devices IEEE af / IEEE / LTE Comply with FCC/ETSI requirements on spectrum mask Trials Long-distance point-to-point link IEEE (with 1 ch) UL 4.5 Mbit/s/DL 5.2 Mbit/s over 12.7 km Mobile broadband TVWS LTE 45.4Mbit/s (FDD, 20MHz 2) / 19.5Mbit/s (TDD, 20MHz) 13

14 Acknowledgement Thank you for your attention. National Institute of Information and Communications Technology Wireless Network Institute Smart Wireless Laboratory Takeshi Matsumura 14