WO2002086555A3 - Method and apparatus for aligning optical wireless links - Google Patents

Method and apparatus for aligning optical wireless links Download PDF

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Publication number
WO2002086555A3
WO2002086555A3 PCT/US2002/012436 US0212436W WO02086555A3 WO 2002086555 A3 WO2002086555 A3 WO 2002086555A3 US 0212436 W US0212436 W US 0212436W WO 02086555 A3 WO02086555 A3 WO 02086555A3
Authority
WO
WIPO (PCT)
Prior art keywords
link
alignment information
point
wireless links
optical wireless
Prior art date
Application number
PCT/US2002/012436
Other languages
French (fr)
Other versions
WO2002086555A2 (en
Inventor
Mark David Heminger
Eric Gregory Oettinger
Mark David Hagen
Karl Kirk Northrup
Original Assignee
Texas Instruments Inc
Mark David Heminger
Eric Gregory Oettinger
Mark David Hagen
Karl Kirk Northrup
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
Priority claimed from US09/940,763 external-priority patent/US6915080B2/en
Application filed by Texas Instruments Inc, Mark David Heminger, Eric Gregory Oettinger, Mark David Hagen, Karl Kirk Northrup filed Critical Texas Instruments Inc
Priority to AU2002254676A priority Critical patent/AU2002254676A1/en
Priority to EP02723916A priority patent/EP1389371A4/en
Publication of WO2002086555A2 publication Critical patent/WO2002086555A2/en
Publication of WO2002086555A3 publication Critical patent/WO2002086555A3/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114Indoor or close-range type systems
    • H04B10/1143Bidirectional transmission
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/112Line-of-sight transmission over an extended range
    • H04B10/1123Bidirectional transmission
    • H04B10/1127Bidirectional transmission using two distinct parallel optical paths
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/40Transceivers

Abstract

Optical wireless links (4, 6) automatically align themselves using feedback information that is transmitted over the light beams (16, 20) being aligned. Each link (4, 6) performs an acquisition routine in which its light beam is swept through a pre-defined pattern while transmitting its beam alignment information. When a link (4, 6) receives beam alignment information from a remote link, it updates its transmission to include the alignment information received from the remote link. At some point, during the acquisition routine, the remote link will receive its own alignment information 'echoed back' from the first link and will re-align its beam accordingly. At some point, each link (4, 6) will have received its own alignment information echoed back from the other link and will have aligned itself to that position. Data communication can begin at that point, or a more refined alignment step can then be performed. The alignment information can be based upon position, sample number, or time transmitted.
PCT/US2002/012436 2001-04-20 2002-04-19 Method and apparatus for aligning optical wireless links WO2002086555A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002254676A AU2002254676A1 (en) 2001-04-20 2002-04-19 Method and apparatus for aligning optical wireless links
EP02723916A EP1389371A4 (en) 2001-04-20 2002-04-19 Method and apparatus for aligning optical wireless links

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US28546101P 2001-04-20 2001-04-20
US60/285,461 2001-04-20
US09/940,763 2001-08-27
US09/940,763 US6915080B2 (en) 2000-09-20 2001-08-27 Method and apparatus for aligning optical wireless links

Publications (2)

Publication Number Publication Date
WO2002086555A2 WO2002086555A2 (en) 2002-10-31
WO2002086555A3 true WO2002086555A3 (en) 2003-03-13

Family

ID=26963208

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/012436 WO2002086555A2 (en) 2001-04-20 2002-04-19 Method and apparatus for aligning optical wireless links

Country Status (3)

Country Link
EP (1) EP1389371A4 (en)
AU (1) AU2002254676A1 (en)
WO (1) WO2002086555A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9838119B1 (en) 2015-01-29 2017-12-05 Google Llc Automatically steered optical wireless communication for mobile devices
WO2022225499A1 (en) * 2021-04-22 2022-10-27 Tretiakov Dmytro Vitalijovych Information transmission method and system for its implementation
WO2024028212A1 (en) 2022-08-04 2024-02-08 Signify Holding B.V. Fast target acquisition for steerable light beams in optical wireless communication systems

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6181450B1 (en) * 1998-05-12 2001-01-30 Harris Corporation System and method for free space optical communications
US6285481B1 (en) * 1997-09-05 2001-09-04 Trex Communications Corporation Free-space laser communications error control system
US6381055B1 (en) * 1998-04-16 2002-04-30 At&T Corp. Transceiver positioning in free-space optical networks

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5592320A (en) * 1994-08-15 1997-01-07 Hughes Aircraft Company Satellite communications system
US5953146A (en) * 1997-01-30 1999-09-14 At&T Corp. Method and apparatus for tracking alignment in wireless optical communications

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6285481B1 (en) * 1997-09-05 2001-09-04 Trex Communications Corporation Free-space laser communications error control system
US6381055B1 (en) * 1998-04-16 2002-04-30 At&T Corp. Transceiver positioning in free-space optical networks
US6181450B1 (en) * 1998-05-12 2001-01-30 Harris Corporation System and method for free space optical communications

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1389371A4 *

Also Published As

Publication number Publication date
AU2002254676A1 (en) 2002-11-05
EP1389371A4 (en) 2006-11-08
WO2002086555A2 (en) 2002-10-31
EP1389371A2 (en) 2004-02-18

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