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WO2018118359A1 - Approche intégrée pour utiliser l'optique en espace libre et une autre technologie de signal avec un cardan sur un aérostat attaché - Google Patents

Approche intégrée pour utiliser l'optique en espace libre et une autre technologie de signal avec un cardan sur un aérostat attaché Download PDF

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Publication number
WO2018118359A1
WO2018118359A1 PCT/US2017/063647 US2017063647W WO2018118359A1 WO 2018118359 A1 WO2018118359 A1 WO 2018118359A1 US 2017063647 W US2017063647 W US 2017063647W WO 2018118359 A1 WO2018118359 A1 WO 2018118359A1
Authority
WO
WIPO (PCT)
Prior art keywords
free
space optical
optical communications
communications link
link
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2017/063647
Other languages
English (en)
Inventor
Mahesh Krishnaswamy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
X Development LLC
Original Assignee
X Development LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by X Development LLC filed Critical X Development LLC
Publication of WO2018118359A1 publication Critical patent/WO2018118359A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/18502—Airborne stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/005—Moving wireless networks

Definitions

  • the height of the aerostat of the communication system may be adjusted in response until the aerostat reaches an altitude where the weather conditions no longer distort optical signals.
  • the communication system may switch from transmitting MMW RF signals or other communication signals to transmitting optical signals.
  • communication systems 100, 102 are configured to establish a point-to-multipoint communication link, such as, for example, a link utilizing IEEE 802.11 standards, with user devices and/or storage systems in surrounding geographic areas.
  • communication system 100 has communication links 250, 252 with one or more devices and systems in geographic areas 260, 262, respectively, and communication system 102 has communication links 254 with one or more user devices in geographic area 264.
  • the geographic areas 260, 262, 264 may be about 4 square miles (about 10 square kilometers) or more or less.
  • Communication systems 100, 102 are also configured to establish at least one communication link 270 with each other and other communication systems.
  • Other communication systems may include stationary ground systems, high-altitude platform systems, and satellites.
  • the at least one communication link 270 may be an FSOC link established between the FSOC antennas of communication systems 100, 102 and/or an MMW link established between the MMW antennas of the communication systems 100, 102.
  • FIGURE 5 is a flow diagram 500 in accordance with some of the aspects described above that may be performed by one or more processors 142 of communication system 100. While FIGURE 5 shows blocks in a particular order, the order may be varied and that multiple operations may be performed simultaneously. Also, operations may be added or omitted.
  • the one or more processors 128 may determine which link has a higher overall quality. In the low power mode, the one or more processor 128 may monitor one or more indications of link quality of the established MMW link. The one or more indications of link quality of the MMW link may be compared with the indications of link quality of the FSOC link to see which link may have better overall quality. The link having more indications of link quality that indicate higher quality than the other link may have the better overall quality.
  • the one or more processors 128 may monitor the link utilizing IEEE 802.11 standards and may switch to operating wireless access point 125 to use the link utilizing IEEE 802.11 standards when the link utilizing IEEE 802.11 standards is determined to have a better overall quality than both the FSOC link and the MMW link based on the indications of link quality, as described above.
  • the link utilizing IEEE 802.11 standards may be initiated when the one or more processors 128 is operating the MMW antenna and the overall quality of the link utilizing IEEE 802.11 standards is determined to be higher than that of the FSOC and MMW links.
  • the MMW link or the link utilizing IEEE 802.11 standards may be the primary link, and the FSOC link may be the secondary link along with the other non-primary link, if any.
  • the switch from one type of link to the other may be near instantaneous.
  • the one or more processors 128 may determine which of the links have a highest overall quality at any given moment, rather than make the determination after deterioration of a link is detected, and switch to operating the link having the highest overall quality.
  • the one or more processors 128 may determine which link has the highest overall quality at set intervals, such as every five minutes, or may continually make the determination. The intervals may also be more or less than five minutes.
  • Weather conditions may alternatively be determined using one or more processors that are located on antenna assembly 120, tether 130, and/or sensors 132, such as the one or more processors 128.
  • the one or more processors on antenna assembly 120, tether 130, and/or sensors 132 may form a closed loop that may be configured to switch between the FSOC link and the MMW link without using the one or more processors 142 at mooring system 140.
  • the features described above may provide for an integrated approach for using FSOC, MMW RF, and other wireless access technology that allows for users to have access to a network even in remote areas.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Selon certains aspects, l'invention concerne un système qui comprend un aérostat, un ensemble antenne, un câble d'attache et un ou plusieurs processeurs. L'ensemble antenne est fixé à l'aérostat et comprend une antenne optique en espace libre et une antenne à ondes millimétriques. Le ou les processeurs font fonctionner une liaison de communication optique en espace libre à l'aide de l'antenne optique en espace libre. Le ou les processeurs sont configurés pour déterminer que la liaison de communication optique en espace libre s'est détériorée pendant une durée seuil. Sur la base de la détérioration déterminée, le ou les processeurs sont configurés pour commuter du fonctionnement de la liaison de communication optique en espace libre au fonctionnement d'une liaison à ondes millimétriques à l'aide de l'antenne à ondes millimétriques.
PCT/US2017/063647 2016-12-22 2017-11-29 Approche intégrée pour utiliser l'optique en espace libre et une autre technologie de signal avec un cardan sur un aérostat attaché Ceased WO2018118359A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201662438137P 2016-12-22 2016-12-22
US62/438,137 2016-12-22
US201762532061P 2017-07-13 2017-07-13
US62/532,061 2017-07-13

Publications (1)

Publication Number Publication Date
WO2018118359A1 true WO2018118359A1 (fr) 2018-06-28

Family

ID=60703147

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2017/063647 Ceased WO2018118359A1 (fr) 2016-12-22 2017-11-29 Approche intégrée pour utiliser l'optique en espace libre et une autre technologie de signal avec un cardan sur un aérostat attaché

Country Status (1)

Country Link
WO (1) WO2018118359A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002061971A1 (fr) * 2001-02-01 2002-08-08 Skylinc Limited Systeme de communication a l'aide d'un aerostat captif au-dessus de la surface de la terre et lie a une station de base par une fibre optique
US20020122230A1 (en) * 2001-03-05 2002-09-05 Hossein Izadpanah Hybrid RF and optical wireless communication link and network structure incorporating it therein
US20080044187A1 (en) * 2002-06-27 2008-02-21 Krill Jerry A Mobile Communications System

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002061971A1 (fr) * 2001-02-01 2002-08-08 Skylinc Limited Systeme de communication a l'aide d'un aerostat captif au-dessus de la surface de la terre et lie a une station de base par une fibre optique
US20020122230A1 (en) * 2001-03-05 2002-09-05 Hossein Izadpanah Hybrid RF and optical wireless communication link and network structure incorporating it therein
US20080044187A1 (en) * 2002-06-27 2008-02-21 Krill Jerry A Mobile Communications System

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