WO2002071657A3 - Hybrid rf and optical wireless communication link and network structure incorporating it therein - Google Patents

Hybrid rf and optical wireless communication link and network structure incorporating it therein Download PDF

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Publication number
WO2002071657A3
WO2002071657A3 PCT/US2002/006735 US0206735W WO02071657A3 WO 2002071657 A3 WO2002071657 A3 WO 2002071657A3 US 0206735 W US0206735 W US 0206735W WO 02071657 A3 WO02071657 A3 WO 02071657A3
Authority
WO
WIPO (PCT)
Prior art keywords
radio frequency
wireless link
hybrid
optical wireless
wireless communication
Prior art date
Application number
PCT/US2002/006735
Other languages
French (fr)
Other versions
WO2002071657A2 (en
Inventor
Hossein Izadpanah
Gregory L Tangonan
Original Assignee
Hrl Lab Llc
Hossein Izadpanah
Gregory L Tangonan
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 Hrl Lab Llc, Hossein Izadpanah, Gregory L Tangonan filed Critical Hrl Lab Llc
Priority to JP2002570447A priority Critical patent/JP2005506718A/en
Publication of WO2002071657A2 publication Critical patent/WO2002071657A2/en
Publication of WO2002071657A3 publication Critical patent/WO2002071657A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/112—Line-of-sight transmission over an extended range
    • H04B10/1121—One-way transmission

Abstract

A hybrid wireless link (100) of the present invention provides a gateway between two wired data systems (102), such as backbone fiber networks, and comprises a laser portion (104), a radio frequency portion (106), and a controller (108). The laser portion (104) and the radio frequency portion (106) provide, side-by-side and point-to-point, a free-space optical wireless link and a radio frequency wireless link. The controller (108) may be designed to respond to atmospheric conditions based on environmental information such as weather tables or the transmit/receive power of the laser portion (104) and the radio frequency portion (106), with signal switched between the laser portion (104) and the radio frequency portion (106) with a binary switch or a variety of latched levels using an incremental switch. The hybrid wireless link (100) may also use multiple channels and may be configured for a variety of networks including multi-channel ring topologies.
PCT/US2002/006735 2001-03-05 2002-03-05 Hybrid rf and optical wireless communication link and network structure incorporating it therein WO2002071657A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002570447A JP2005506718A (en) 2001-03-05 2002-03-05 Hybrid RF / optical wireless communication link and network structure incorporating the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/800,917 US20020122230A1 (en) 2001-03-05 2001-03-05 Hybrid RF and optical wireless communication link and network structure incorporating it therein
US09/800,917 2001-03-05

Publications (2)

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WO2002071657A2 WO2002071657A2 (en) 2002-09-12
WO2002071657A3 true WO2002071657A3 (en) 2003-11-13

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Family Applications (1)

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PCT/US2002/006735 WO2002071657A2 (en) 2001-03-05 2002-03-05 Hybrid rf and optical wireless communication link and network structure incorporating it therein

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US (1) US20020122230A1 (en)
JP (1) JP2005506718A (en)
WO (1) WO2002071657A2 (en)

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US20020122230A1 (en) 2002-09-05
JP2005506718A (en) 2005-03-03

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