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清理未知參數

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{{Infobox company
| name = Sigfox S.A.

| logo_size =
| logo_alt =
| logo_caption =
| logo_padding =
| image =
| image_size =
| image_alt =
| image_caption =
| native_name = SIGFOX
| native_name_lang = 
| former_name =
| type = {{link-en|S.A. (組織)|S.A. (corporation)|Société Anonyme}}
| industry = 無線服務
| founded = 2010
| founders = Ludovic Le Moan and Christophe Fourtet
| location = [[法国]][[拉贝格]][[圖盧茲]]附近
| area_served = Global 
| key_people = [[首席执行官]] Ludovic le Moan, Chairman {{link-en|Anne Lauvergeon|Anne Lauvergeon}}, Scientific Director Christophe Fourtet,
| products =
| brands =
| num_employees = 375 (04/2017)
| services = IoT
| revenue = 5000萬歐元<ref name=IT>{{cite web|title=Sigfox presents 2017 results and 2018 roadmap|url=https://www.sigfox.com/en/news/sigfox-presents-2017-results-and-2018-roadmap|website=Sigfox|publisher=Sigfox|accessdate=1 August 2018|archive-date=2019-03-29|archive-url=https://web.archive.org/web/20190329144637/https://www.sigfox.com/en/news/sigfox-presents-2017-results-and-2018-roadmap|dead-url=no}}</ref> <small>(2017)</small>
| owner = 
| website = {{URL|http://www.sigfox.com/}} 
}}

'''Sigfox'''是[[法国]]的網路公司，在2010年成立<ref>{{Cite web|url=https://www.sigfox.com/en/sigfox-story|title=Our Story {{!}} Sigfox|last=|first=|date=2020|website=Sigfox|archive-url=|archive-date=|access-date=}}</ref>，利用[[无线网络]]連接低功率設備（例如[[電度錶]]及[[智能手表]]），這些設備需要持續性的連線，會送出小量資料。

Sigfox總部在法國[[圖盧茲]]附近的[[拉贝格]]，有375名員工。Sigfox在[[马德里]]、[[旧金山]]、[[悉尼]]和[[巴黎]]也有辦公室<ref name="Partech Shaker">{{cite web|title=Residents|url=http://partechshaker.com/sigfox-paris-shaker/|website=Partech Shaker|publisher=Partech Shaker|accessdate=13 May 2015|archive-date=2019-03-29|archive-url=https://web.archive.org/web/20190329144639/https://partechshaker.com/sigfox-paris-shaker/|dead-url=no}}</ref><ref name="Le Figaro">{{cite web|last1=Renault|first1=Enguérand|title=Le Shaker, une fabrique à start-up, s'installe au cœur de Paris|url=http://www.lefigaro.fr/secteur/high-tech/2014/07/09/01007-20140709ARTFIG00240-le-shaker-une-fabrique-a-start-up-s-installe-au-coeur-de-paris.php|website=Le Figaro|publisher=Le Figaro|accessdate=13 May 2015|date=2014-07-09|archive-date=2015-05-18|archive-url=https://web.archive.org/web/20150518084306/http://www.lefigaro.fr/secteur/high-tech/2014/07/09/01007-20140709ARTFIG00240-le-shaker-une-fabrique-a-start-up-s-installe-au-coeur-de-paris.php|dead-url=no}}</ref>。

==技術==
Sigfox使用差動二位元[[相位偏移調變]]（DBPSK）及[[頻率偏移調變]]（GFSK），利用工業、科學及醫療用的[[ISM频段]]通訊，在歐洲是868MHz，美國是902MHz。其使用的訊號可以遠距傳送，也可以通過固體媒介傳播，稱為{{link-en|Ultra Narrowband|Ultra Narrowband}}，需要能量也很少，也稱為[[LPWAN]]。網路是以one-hop的[[网络拓扑]]，需要mobile operator來處理所產生的網路流量<ref name="DregvaiteDamasevicius2016">{{cite book|author1=Giedre Dregvaite|author2=Robertas Damasevicius|title=Information and Software Technologies: 22nd International Conference, ICIST 2016, Druskininkai, Lithuania, October 13-15, 2016, Proceedings|url=https://books.google.com/books?id=ApcoDQAAQBAJ&pg=PA665|date=30 October 2016|publisher=Springer|isbn=978-3-319-46254-7|pages=665–|access-date=2020-02-21|archive-date=2019-03-29|archive-url=https://web.archive.org/web/20190329144631/https://books.google.com/books?id=ApcoDQAAQBAJ&pg=PA665|dead-url=no}}</ref>。信號也可以覆蓋很大的區域，並且深達地下<ref name="AghaPujolle2016">{{cite book|author1=Khaldoun Al Agha|author2=Guy Pujolle|author3=Tara Ali Yahiya|title=Mobile and Wireless Networks|url=https://books.google.com/books?id=_BzfDAAAQBAJ&pg=PA241|date=17 August 2016|publisher=Wiley|isbn=978-1-119-00755-5|pages=241–|access-date=2020-02-21|archive-date=2019-03-29|archive-url=https://web.archive.org/web/20190329144634/https://books.google.com/books?id=_BzfDAAAQBAJ&pg=PA241|dead-url=no}}</ref>。至2018年10月為止，Sigfox IoT網路已經覆蓋了50個國家的4200萬平方公里的面積<ref>{{Cite web|url=https://www.electronicsweekly.com/news/products/rf-microwave-optoelectronics/sigfox-iot-network-reaches-50-countries-2018-10/|title=Sigfox IoT network reaches 50 countries|last=Bush|first=Steve|date=2018-10-02|website=Electronics Weekly|access-date=2018-12-03|archive-date=2018-12-04|archive-url=https://web.archive.org/web/20181204005636/https://www.electronicsweekly.com/news/products/rf-microwave-optoelectronics/sigfox-iot-network-reaches-50-countries-2018-10/|dead-url=no}}</ref>。

有許多LPWAN產業的公司是Sigfox的合作夥伴，例如[[德州仪器]]、{{link-en|Silicon Labs|Silicon Labs}}及[[安森美]]。ISM頻段支援有限量的雙向通訊。目前已有的Sigfox通訊標準可以支援每天140個上傳訊息，每一個的酬載為12[[八位元組]]，通訊速度可以到每秒100位元<ref>{{Cite journal|last=Augustin|first=Aloÿs|last2=Yi|first2=Jiazi|last3=Clausen|first3=Thomas|last4=Townsley|first4=William Mark|date=2016-09-09|editor-last=Kim|editor-first=Dongkyun|title=A Study of LoRa: Long Range & Low Power Networks for the Internet of Things|journal=Sensors|volume=16|issue=9|pages=2–3|doi=10.3390/s16091466|pmid=27618064|pmc=5038744}}</ref>。

==參考資料==
{{reflist}}

==外部連結==
*{{Official website|http://www.sigfox.com/}}

{{DEFAULTSORT:Sigfox}}
[[Category:无线网络]]
[[Category:法國公司]]

Sigfox - 版本历史

imported>Comrade John：​清理未知參數

imported>Comrade John：清理未知參數