CA2005997A1 - Photonic local/metropolitan area network - Google Patents

Photonic local/metropolitan area network

Info

Publication number
CA2005997A1
CA2005997A1 CA2005997A CA2005997A CA2005997A1 CA 2005997 A1 CA2005997 A1 CA 2005997A1 CA 2005997 A CA2005997 A CA 2005997A CA 2005997 A CA2005997 A CA 2005997A CA 2005997 A1 CA2005997 A1 CA 2005997A1
Authority
CA
Canada
Prior art keywords
optical
path
packet
packets
node
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.)
Granted
Application number
CA2005997A
Other languages
French (fr)
Other versions
CA2005997C (en
Inventor
Zygmunt Haas
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Publication of CA2005997A1 publication Critical patent/CA2005997A1/en
Application granted granted Critical
Publication of CA2005997C publication Critical patent/CA2005997C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2852—Metropolitan area networks

Abstract

This invention is directed toward providing higher speed local and/or metropolitan area optical networks by storing light in the fiber of an optical network to resolve collisions between advancing packets. One condition that needs to be resolved in packet-switched networks occurs when two packets attempt to exit a switching node on the same output link. With this invention, collisions of optical packets are resolved by coupling all packets that cannot be forwarded onto the reverse links for transmission to the node they came from. With this invention, each branch of a network, for example, a star type of network, is provided with an optical fiber path having two parallel opposite-directed, optical links which can be selectively configured to form either a direct straight throughput or a loop-back path. Prior to advancing a packet to the next occurring path, a test is made to determine if it is occupied with a packet. If it is not occupied, the packet is advanced along the forward optical link to the next node. If it is occupied, then the two optical links of the optical path directed to the previous node are very rapidly configured to form a loop-back path, and the packet is sent around the loop-back path, again and again, as required, until the path to the next node is cleared.
CA002005997A 1989-02-23 1989-12-19 Photonic local/metropolitan area network Expired - Fee Related CA2005997C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/314,724 US4970717A (en) 1989-02-23 1989-02-23 Photonic local/metropolitan area network
US314,724 1989-02-23

Publications (2)

Publication Number Publication Date
CA2005997A1 true CA2005997A1 (en) 1990-08-23
CA2005997C CA2005997C (en) 1995-02-14

Family

ID=23221168

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002005997A Expired - Fee Related CA2005997C (en) 1989-02-23 1989-12-19 Photonic local/metropolitan area network

Country Status (8)

Country Link
US (1) US4970717A (en)
EP (1) EP0389097B1 (en)
JP (1) JP2523201B2 (en)
KR (1) KR900013738A (en)
CA (1) CA2005997C (en)
DE (1) DE69022758T2 (en)
ES (1) ES2078940T3 (en)
HK (1) HK33596A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5138615A (en) * 1989-06-22 1992-08-11 Digital Equipment Corporation Reconfiguration system and method for high-speed mesh connected local area network
US5421030A (en) * 1991-09-17 1995-05-30 Com21, Inc. Communications system and method for bi-directional communications between an upstream control facility and downstream user terminals
US5341415A (en) * 1992-09-22 1994-08-23 Paul Baran Method and apparatus for sharing of common in-house wiring to permit multiple telephone carriers to serve the same customer
CA2144953A1 (en) * 1992-09-29 1994-04-14 Paul Baran Cell based wide area network alternative access telephone and data system
US5425027A (en) * 1993-01-04 1995-06-13 Com21, Inc. Wide area fiber and TV cable fast packet cell network
GB2321563B (en) * 1997-01-24 1999-04-21 Plessey Telecomm Burst mode wavelength manager
DE69841787D1 (en) * 1997-09-17 2010-09-09 British Telecomm PROCESS MANAGEMENT SYSTEM IN A COMPUTER NETWORK
US6128113A (en) * 1998-03-04 2000-10-03 Dynamics Research Corporation Transparent optical communications switch
US6748451B2 (en) 1998-05-26 2004-06-08 Dow Global Technologies Inc. Distributed computing environment using real-time scheduling logic and time deterministic architecture
US6567429B1 (en) 1998-06-02 2003-05-20 Dynamics Research Corporation Wide area multi-service broadband network
DE19940565C1 (en) * 1999-08-26 2001-02-01 Siemens Ag Connection path control for optic data packet transmission
US7145704B1 (en) 2003-11-25 2006-12-05 Cheetah Omni, Llc Optical logic gate based optical router
US7308002B2 (en) * 2003-11-24 2007-12-11 Intergrated System Solution Corp. Packet type arbitrator in WLAN and corresponding arbitrating method
US7245831B2 (en) * 2004-10-04 2007-07-17 Board Of Supervisors Of Louisiana State University And Agricultural And Mechanical College Optical packet switching

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4674085A (en) * 1985-03-21 1987-06-16 American Telephone And Telegraph Co. Local area network
FR2586874B1 (en) * 1985-08-29 1988-08-05 Comp Generale Electricite OPTICAL FIBER TELECOMMUNICATION DEVICE.
GB8530087D0 (en) * 1985-12-06 1986-02-12 British Telecomm Operating multi access optical network
US4701907C1 (en) * 1986-02-03 2002-08-27 Collins Mary Dynamically reconfigurable time-space-time digital switch and network
US4829512A (en) * 1986-08-26 1989-05-09 Nec Corporation Loop-back control apparatus for a loop network having duplicate optical fiber transmission lines
US4847837A (en) * 1986-11-07 1989-07-11 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Local area network with fault-checking, priorities and redundant backup
US4766530A (en) * 1986-11-24 1988-08-23 Westinghouse Electric Corp. Token passing scheme for a predetermined configuration local area network
US4835763A (en) * 1988-02-04 1989-05-30 Bell Communications Research, Inc. Survivable ring network

Also Published As

Publication number Publication date
DE69022758T2 (en) 1996-03-14
EP0389097A2 (en) 1990-09-26
JP2523201B2 (en) 1996-08-07
CA2005997C (en) 1995-02-14
ES2078940T3 (en) 1996-01-01
HK33596A (en) 1996-03-08
EP0389097B1 (en) 1995-10-04
US4970717A (en) 1990-11-13
EP0389097A3 (en) 1991-12-04
JPH02248133A (en) 1990-10-03
KR900013738A (en) 1990-09-06
DE69022758D1 (en) 1995-11-09

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