WO2003005156A3 - System, method, and computer program product for managing communications in ethernet-based fiber optic tdma networks - Google Patents

System, method, and computer program product for managing communications in ethernet-based fiber optic tdma networks Download PDF

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Publication number
WO2003005156A3
WO2003005156A3 PCT/US2002/021044 US0221044W WO03005156A3 WO 2003005156 A3 WO2003005156 A3 WO 2003005156A3 US 0221044 W US0221044 W US 0221044W WO 03005156 A3 WO03005156 A3 WO 03005156A3
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WO
WIPO (PCT)
Prior art keywords
bandwidth
video
ethernet
computer program
program product
Prior art date
Application number
PCT/US2002/021044
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French (fr)
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WO2003005156A2 (en
Inventor
Ajay Chandra V Gummalla
Dolors Sala
Niki R Pantelias
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Broadcom Corp
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Publication of WO2003005156A2 publication Critical patent/WO2003005156A2/en
Publication of WO2003005156A3 publication Critical patent/WO2003005156A3/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0226—Fixed carrier allocation, e.g. according to service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0228—Wavelength allocation for communications one-to-all, e.g. broadcasting wavelengths
    • H04J14/023—Wavelength allocation for communications one-to-all, e.g. broadcasting wavelengths in WDM passive optical networks [WDM-PON]
    • H04J14/0232—Wavelength allocation for communications one-to-all, e.g. broadcasting wavelengths in WDM passive optical networks [WDM-PON] for downstream transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
    • H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
    • H04J14/0245—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for downstream transmission, e.g. optical line terminal [OLT] to ONU
    • H04J14/0247—Sharing one wavelength for at least a group of ONUs
    • H—ELECTRICITY
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    • H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
    • H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
    • H04J14/0249—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU
    • H04J14/025—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU using one wavelength per ONU, e.g. for transmissions from-ONU-to-OLT or from-ONU-to-ONU
    • H—ELECTRICITY
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    • H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
    • H04J14/0249—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU
    • H04J14/0252—Sharing one wavelength for at least a group of ONUs, e.g. for transmissions from-ONU-to-OLT or from-ONU-to-ONU
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Abstract

A system, method, and computer program product for management of bandwidth, cost control, quality of service, and operational efficiency in a fiber optic, ethernet-based, TDMA communications system. A network topology is described in which an aggregating optical node (310) is used between a central office (305) and end users (330). This allows a variety of topologies between the optical node and end users. Methods of spectral allocation are also described, allowing for improved service and efficient management of bandwidth. Bandwidth can also be managed in the time domain, through a system of bandwidth requests and grants, and through flexible handling of packets, e.g., fragmentation, prioritization, and the use of judiciously sized maximum data units. The invention also features mechanisms by which video service is enhanced for end users. These mechanisms include buffering of video frames, allowing channel switching at the optical node, flexible allocation of bandwidth between video and non-video requirements.
PCT/US2002/021044 2001-07-05 2002-07-05 System, method, and computer program product for managing communications in ethernet-based fiber optic tdma networks WO2003005156A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US30267401P 2001-07-05 2001-07-05
US60/302,674 2001-07-05

Publications (2)

Publication Number Publication Date
WO2003005156A2 WO2003005156A2 (en) 2003-01-16
WO2003005156A3 true WO2003005156A3 (en) 2004-03-04

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WO (1) WO2003005156A2 (en)

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