インターネットとオープンな無線技術の今後 / Future of Internet and Open Radio Engineering

Fc3b290038a97f5df6fec7660c357ef4?s=47 Kenji Rikitake
September 03, 2020

インターネットとオープンな無線技術の今後 / Future of Internet and Open Radio Engineering

情報処理学会第51回IOT研究会 2020年9月3日

Fc3b290038a97f5df6fec7660c357ef4?s=128

Kenji Rikitake

September 03, 2020
Tweet

Transcript

  1. ΠϯλʔωοτͱΦʔϓϯͳແઢٕज़ͷࠓޙ ྗ෢ ݈࣍ ྗ෢݈ٕ࣍ज़࢜ࣄ຿ॴ / ϖύϘݚڀॴ 2020೥9݄3೔ ৘ใॲཧֶձୈ51ճIOTݚڀձ Kenji Rikitake

    / IPSJ IOT51 3-SEP-2020 1
  2. ຊൃදͷ಺༰ • എܠ: ແઢٕज़ͷΦʔϓϯԽͱి೾؂ཧମ੍ͷໃ६ • ΦʔϓϯԽͷྫ(1): SDRͱΠϯλʔωοτ • ΦʔϓϯԽͷྫ(2): ΞϚνϡΞແઢͱΦʔϓϯαΠΤϯε

    • ແઢͷ҉߸ར༻Ͱͷ໰୊఺ • ·ͱΊ: ࠓޙԿΛม͑Ε͹͍͍ͷ͔ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 2
  3. എܠ ແઢٕज़ͷΦʔϓϯԽͱ ి೾؂ཧମ੍ͷໃ६ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 3

  4. ແઢٕज़ͷΦʔϓϯԽ Πϯλʔωοτͷར༻΍׆༻Λલఏʹͨ͠ΦʔϓϯԽ͕Ճ଎த • ιϑτ΢ΣΞແઢػʢSDRʣͷීٴ • FM์ૹͷϚϧνύεআڈͳͲߴ౓ͳػೳͷ࣮ݱ͕༰қʹͳͬͨ • Τϯυϊʔυ͔Βͷ৘ใू໿ʹΑΔIoTతͳར༻ͷීٴ • FlightRadar24ͳͲͰάϩʔόϧͳঢ়گͷՄࢹԽ͕Ͱ͖ΔΑ͏ʹͳͬͨ

    • ػೳͷΦʔϓϯιʔειϑτ΢ΣΞʢOSSʣԽͷਪਐ • ൿ఻ͩͬͨແઢٕज़ͷ։͕ࣔਐΈֶश͢Δ͜ͱ͕༰қʹͳͬͨ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 4
  5. ి೾؂ཧମ੍ͱΦʔϓϯԽͷໃ६ ೔ຊͷి೾๏Ͱ͸ࣄલڐՄ͕લఏ • ؂ཧͷ໨త: ࠞ৴๦֐ͷࣄલ๷ࢭͱి೾ͷެฏͳར༻ • ݱ࣮: ࣄલڐՄݪଇʹ߹Θͳ͍΋ͷ͸͢΂ͯྫ֎తڐՄ • ݁Ռ:

    ๏཯͕ෳࡶʹͳΓਝ଎ʹಈ͚ͳ͍ • Ͳͷྫ֎͕ԿΛΧόʔ͍ͯ͠Δͷ͔؆୯ʹΘ͔Βͳ͍ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 5
  6. ి೾๏͸ݸผ໔ڐʹΑΔࣄલڐՄ͕େݪଇ • ࣄલͷ໔ڐਃ੥→༧උ໔ڐ • ༧උ໔ڐʹجͮ͘޻ࣄˠམ੒ݕࠪ • མ੒ݕ͕ࠪ௨ͬͯ΍ͬͱ໔ڐঢ়ަ෇ • ٕज़త࢓༷͕มΘΔͱશ෦΍Γ௚͠: ಈతʹม͑ΒΕͳ͍

    ࢀߟ: 2020೥7݄ݱࡏͷؔ౦૯߹௨৴ہͰͷΞϚνϡΞແઢہͷਃ੥ॲཧʹ͸ຖճ໿1ϲ݄͔͔͍ͬͯΔ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 6
  7. ి೾๏ʹ͓͚Δྫ֎ͷ਺ʑ • ແઢLANʢIEEE802.11ʣ • ܞଳి࿩΍εϚʔτϑΥϯͷ୺຤: ిؾ௨৴ࣄۀऀ͕໔ڐΛ୅ߦ • LoRaWAN: 920MHzଳͷಛఆখిྗແઢ •

    σδλϧ؆қແઢ / σδλϧখిྗίϛϡχςΟແઢ • ΞϚνϡΞແઢʢϏδωεͷ࿩ʹ͸࢖͑ͳ͍ʣ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 7
  8. ݱঢ়ͷి೾؂ཧମ੍ͷ໰୊఺ • ීஈ࢖͏௨৴ํࣜ͸๏཯্ͷྫ֎͹͔Γ • ηΩϡϦςΟڧԽͳͲͷ৽نٕज़΋։ൃޙ͙͢ʹ࣮ݧͰ͖ͳ͍ • ਃ੥͕ಧग़ʹͳͬͨͱ͸͍͑ࣄલڐՄݪଇ͸มΘΒͳ͍ • ߗ௚੍ͨ͠౓ͷ݁ՌɺແڐՄͷӡ༻͕ຮԆ •

    ݁Ռͱٕͯ͠ज़ͷਐาʹ๏཯͕͍͍͍ͭͯͬͯͳ͍ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 8
  9. ΦʔϓϯԽͷྫ(1): SDRͱΠϯλʔωοτ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 9

  10. RTL-SDR V3 • ςϨϏड৴νοϓͷԠ༻ • 24MHz ~ 1766MHz • FM์ૹɺߤۭແઢɺΞϚνϡΞແઢɺ

    ADS-B౳ͷड৴ʹ޿͘࢖ΘΕ͍ͯΔ • FlightRadar24ͷਪ঑ػࡐ • υϥΠό͸OSS • ֤छOSSΞϓϦʹରԠ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 10
  11. 11

  12. 12

  13. SDRʹΑΔFMϚϧνύε ϑΟϧλͷ࣮૷ྫ • ൃදऀͷOSS airspy-fmradionʹ࣮ͯ૷ • దԠϑΟϧλʹConstant Modulus AlgorithmͱෳૉLMSϑΟϧλΛ࢖༻ •

    ӈਤ͸NHKେࡕFM์ૹͷ࣌ใԻͷεϖ Ϋτϧ෼෍ɺTHD+NΛ0.918%ʢ྘ʣ͔ Β0.242%ʢ੺ʣʹ௿ݮ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 13
  14. Πϯλʔωοτ͕SDRʹ༩͑ͨӨڹ • ࿦จ΋ϥΠϒϥϦ΋ࢀর࣮૷΋͢΂ͯΠϯλʔωοτ͔Β • Ϋϥ΢υίϯϐϡʔςΟϯάʹΑΔੈքதͷ৘ใͷू໿ • ड৴ػ͚ͩͰ͸ͳ͘ૹ৴ػ΋ΦʔϓϯԽ͞Ε͍ͯΔ • ແઢ԰͞Μ͚ͩͰͳ͘ܭࢉػ԰͞Μͷແઢٕज़΁ͷࢀઓ •

    →ίϯϐϡʔλͷI/OσόΠεͱͯ͠ͷແઢػ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 14
  15. ΦʔϓϯԽͷྫ(2): ΞϚνϡΞແઢͱ ΦʔϓϯαΠΤϯε Kenji Rikitake / IPSJ IOT51 3-SEP-2020 15

  16. ΞϚνϡΞແઢͷྺ࢙ͱࠓޙ • ͔ͭͯ͸Ӧར໨తͰͳ͍ࡶஊΛָ͠ΊΔੈք࠷ॳͷSNSͩͬͨ • ݱ୅͸ιʔγϟϧϝσΟΞͷ໾ׂ͸Πϯλʔωοτʹৡͬͨ • ి೾ૹ৴ͱΞϯςφͳͲٕज़࣮ݧͷ৔ʹճؼͭͭ͋͠Δ • ͔͠͠COVID-19ԼͷݱࡏP2PͰࠃࡍ௨৴Ͱ͖Δ਺গͳ͍खஈ •

    ιϑτ΢ΣΞٕज़Ͱ௨৴৚͕݅ඈ༂తʹվળ͞Εͨ(WSJT) Kenji Rikitake / IPSJ IOT51 3-SEP-2020 16
  17. 17

  18. 18

  19. 19

  20. Πϯλʔωοτ͕ΞϚνϡΞແઢʹ༩͑ͨӨڹ • ࿦จ΋ϥΠϒϥϦ΋ࢀর࣮૷΋͢΂ͯΠϯλʔωοτ͔Β • Ϋϥ΢υίϯϐϡʔςΟϯάʹΑΔੈքதͷ৘ใͷू໿ • ௨৴ํࣜͷ։ൃ΍վྑ΋OSSͱͯ͠ਪਐ • άϩʔόϧͳΦʔϓϯαΠΤϯεج൫ͱͳͬͨ •

    ೔ຊ͔Β͸ి೾๏ͷࣄલڐՄݪଇͷͨΊߩݙͰ͖͍ͯͳ͍ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 20
  21. ೔ຊͷి೾؂ཧମ੍͕ ແઢͰͷ҉߸ར༻ʹ༩͑ΔӨڹ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 21

  22. ݱࡏ͸ηΩϡϦςΟରࡦ͕ਝ଎ʹͰ͖ͳ͍ • ڞ௨伴҉߸͚ͩͰ͸ෆे෼ͳͨΊPKIج൫͕ඞཁ • GPS΍ADS-BͳͲ҉߸Λ࢖͍ͬͯͳ͍௨৴ํ͕ࣜࣾձͷࠜװΛ ࢧ͑Δঢ়گʹ͸ɺࣄલڐՄ͚ͩͰͳ͘ҧ๏ӡ༻΍ѱҙʹΑΔ๦ ֐Λܧଓత໢ཏతʹ؂ࢹ͠ਝ଎ʹऔΓక·Δ͜ͱ͕ඞཁ • ࣄલڐՄݪଇ͚ͩͰ͸ɺΦʔϓϯͳ҉߸ඪ४΍࣮૷Λਝ଎ʹ࠾ ༻Ͱ͖ͣɺةຆԽ๷ࢭ΁ͷରࡦ΍࣮ূ࣮ݧ΋ਝ଎ʹͰ͖ͳ͍

    Kenji Rikitake / IPSJ IOT51 3-SEP-2020 22
  23. ·ͱΊ ࠓޙͲͷΑ͏ʹ ೔ຊͷి೾؂ཧମ੍Λ ม͍͑ͯ͘΂͖͔ Kenji Rikitake / IPSJ IOT51 3-SEP-2020

    23
  24. ແઢٕज़ͷΦʔϓϯԽ͸طఆͷࣄ࣮ ΦʔϓϯԽٕͨ͠ज़Λద੾ʹ؂ཧ͢ΔͨΊʹ ࣄલڐՄݪଇґଘ͔Βͷ୤٫͕ඞཁ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 24

  25. ࠓ͙͢Ͱ͖Δ੍౓ͷվળ(1) • ࣄલਃ੥ͳࣗ͘༝ͳར༻͕ՄೳͳଳҬͷ֦ॆ • ࠃࡍن֨੒ཱલͷ௨৴ํࣜ΍ϓϩτίϧͷ࣮ݧͷࣗ༝Խ • ࣄલڐՄʹཔΒͳ͍ૹ৴ݩೝূج൫ͷ੔උ • ҧ๏ͳి೾͕ग़͍ͯΔલఏͰͷ؂ཧମ੍ͷݟ௚͠ •

    దਖ਼ͳར༻Λอূ͢ΔͨΊͷϞχλϦϯάମ੍ͷڧԽ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 25
  26. ࠓ͙͢Ͱ͖Δ੍౓ͷվળ(2) • ػثͷมߋ͝ͱʹඞཁͳखଓͷ؆ུԽ͋Δ͍͸ഇࢭ • ӡ༻ར༻લఏͰͷੈք֤ࠃ֤஍Ҭͱͷ૬ޓೝূ • ݱߦͷ࣮ݧ౳Ͱͷ180೔ؒݶఆͷಛྫ੍౓ͷ֦ॆ • ໔ڐ৘ใͷσʔλϕʔε؂ཧͱࢴͷ໔ڐঢ়ͷഇࢭ •

    ୤ϋϯίͱϖʔύʔϨε͸೔ຊ੓෎ͷجຊํ਑ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 26
  27. ຊൃදͷؔ࿈ݚڀใࠂ/࿦จ • ༧ߘ: ྗ෢݈࣍: ΠϯλʔωοτͱΦʔϓϯͳແઢٕज़ͷࠓޙ, Vol. 2020-IOT-51, No. 1, IPSJ,

    pp. 1--8 (2020). ISSN 2188-8787. ༧ߘͷPDFϑΝΠϧʢஶऀWebαΠτʣ 1 • Frissell, N. A., Miller, E. S., Kaeppler, S. R., Ceglia, F., Pascoe, D., Sinanis, N., Smith, P., Williams, R., and Shovkoplyas, A. (2014), Ionospheric Sounding Using Real‐Time Amateur Radio Reporting Networks, Space Weather, 12, 651– 656, doi: 10.1002/2014SW001132. 1 ͜͜ʹܝࡌͨ͠ஶ࡞෺ͷར༻ʹؔ͢Δ஫ҙ: ຊൃදͷ༧ߘͷஶ࡞ݖ͸৘ใॲཧֶձʹؼଐ͠·͢ɻຊஶ࡞෺͸ஶ࡞ ݖऀͰ͋Δ৘ใॲཧֶձͷڐՄͷ΋ͱʹஶऀͷWebαΠτʹܝࡌ͢Δ΋ͷͰ͢ɻ͝ར༻ʹ౰ͨͬͯ͸ʮஶ࡞ݖ๏ʯ ͳΒͼʹʮ৘ใॲཧֶձྙཧߝྖʯʹै͏͜ͱΛ͓ئ͍͍ͨ͠·͢ɻ Kenji Rikitake / IPSJ IOT51 3-SEP-2020 27