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

Transcript

1. ΠϯλʔωοτͱΦʔϓϯͳແઢٕज़ͷࠓޙ
   ྗ෢ ݈࣍
   ྗ෢݈ٕ࣍ज़࢜ࣄ຿ॴ / ϖύϘݚڀॴ
   2020೥9݄3೔ ৘ใॲཧֶձୈ51ճIOTݚڀձ
   Kenji Rikitake / IPSJ IOT51 3-SEP-2020 1
   

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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
   

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3. എܠ
   ແઢٕज़ͷΦʔϓϯԽͱ
   ి೾؂ཧମ੍ͷໃ६
   Kenji Rikitake / IPSJ IOT51 3-SEP-2020 3
   

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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
   

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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
   

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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
   

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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
   

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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
   

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9. ΦʔϓϯԽͷྫ(1):
   SDRͱΠϯλʔωοτ
   Kenji Rikitake / IPSJ IOT51 3-SEP-2020 9
   

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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
    

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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
    

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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
    

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

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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
    

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20. Πϯλʔωοτ͕ΞϚνϡΞແઢʹ༩͑ͨӨڹ
    • ࿦จ΋ϥΠϒϥϦ΋ࢀর࣮૷΋͢΂ͯΠϯλʔωοτ͔Β
    • Ϋϥ΢υίϯϐϡʔςΟϯάʹΑΔੈքதͷ৘ใͷू໿
    • ௨৴ํࣜͷ։ൃ΍վྑ΋OSSͱͯ͠ਪਐ
    • άϩʔόϧͳΦʔϓϯαΠΤϯεج൫ͱͳͬͨ
    • ೔ຊ͔Β͸ి೾๏ͷࣄલڐՄݪଇͷͨΊߩݙͰ͖͍ͯͳ͍
    Kenji Rikitake / IPSJ IOT51 3-SEP-2020 20
    

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

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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
    

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

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

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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
    

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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
    

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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
    

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