DE19537103A1 - Redundant fiber optic network - Google Patents
Redundant fiber optic networkInfo
- Publication number
- DE19537103A1 DE19537103A1 DE19537103A DE19537103A DE19537103A1 DE 19537103 A1 DE19537103 A1 DE 19537103A1 DE 19537103 A DE19537103 A DE 19537103A DE 19537103 A DE19537103 A DE 19537103A DE 19537103 A1 DE19537103 A1 DE 19537103A1
- Authority
- DE
- Germany
- Prior art keywords
- optical fiber
- switches
- star
- fiber network
- ring line
- 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.)
- Withdrawn
Links
- 239000000835 fiber Substances 0.000 title claims 2
- 230000003287 optical effect Effects 0.000 claims abstract description 11
- 239000013307 optical fiber Substances 0.000 claims description 11
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 4
- 230000005693 optoelectronics Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0287—Protection in WDM systems
- H04J14/0289—Optical multiplex section protection
- H04J14/0291—Shared protection at the optical multiplex section (1:1, n:m)
-
- 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
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2589—Bidirectional transmission
-
- 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
- H04B10/27—Arrangements for networking
- H04B10/271—Combination of different networks, e.g. star and ring configuration in the same network or two ring networks interconnected
-
- 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
- H04B10/27—Arrangements for networking
- H04B10/272—Star-type networks or tree-type networks
-
- 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
- H04B10/27—Arrangements for networking
- H04B10/275—Ring-type networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
- H04Q11/0478—Provisions for broadband connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0278—WDM optical network architectures
- H04J14/0282—WDM tree architectures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0278—WDM optical network architectures
- H04J14/0283—WDM ring architectures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0028—Local loop
- H04J2203/0039—Topology
- H04J2203/0041—Star, e.g. cross-connect, concentrator, subscriber group equipment, remote electronics
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0028—Local loop
- H04J2203/0039—Topology
- H04J2203/0042—Ring
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0057—Operations, administration and maintenance [OAM]
- H04J2203/006—Fault tolerance and recovery
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0071—Provisions for the electrical-optical layer interface
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0005—Switch and router aspects
- H04Q2011/0037—Operation
- H04Q2011/0043—Fault tolerance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
- H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/009—Topology aspects
- H04Q2011/0092—Ring
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/009—Topology aspects
- H04Q2011/0094—Star
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/009—Topology aspects
- H04Q2011/0096—Tree
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computing Systems (AREA)
- Small-Scale Networks (AREA)
- Optical Communication System (AREA)
Abstract
Description
Die Erfindung geht aus von der Gattung, wie im unabhängigen Anspruch 1 angegeben. Ein solches Lichtwellenleiter-Netz ist bekannt aus der DE 43 18 732 A1.The invention is based on the genus, as in the independent Claim 1 specified. Such an optical fiber network is known from DE 43 18 732 A1.
Bei den im Anspruch 1 erwähnten Zwischen- oder Endgeräten kann es sich z. B. um dezentrale Knoten mit Demultiplex-, Multiplex- oder Konzentratorfunktion oder auch um die Eingangsschaltung eines Teilnehmergerätes handeln. Das erfindungsgemäße Lichtwellenleiter-Netz bietet neue Möglichkeiten der Ersatzschaltung für ein Teilnehmer-Anschlußnetz mit Hilfe einer bidirektional betreibbaren Ringleitung.In the intermediate or terminal devices mentioned in claim 1 can it be z. B. decentralized nodes with demultiplexing, Multiplex or concentrator function or around that Act input circuit of a subscriber device. The Optical fiber network according to the invention offers new Possibilities of the equivalent circuit for a subscriber access network with the help of a bidirectional operable Loop.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung gezeigt und in der nachfolgenden Beschreibung näher erläutert. Es ist dargestellt inAn embodiment of the invention is in the drawing shown and in the following description explained. It is shown in
Fig. 1: Ein Teil eines Lichtwellenleiter-Netzes nach der Erfindung; Fig. 1: Part of an optical fiber network according to the invention;
Fig. 2: Eine erste Ausgestaltungsmöglichkeit eines Zwischen- oder Endgerätes und Fig. 2: A first embodiment of an intermediate or terminal and
Fig. 3: Eine zweite Ausgestaltungsmöglichkeit. Fig. 3: A second design option.
In Fig. 1 stellen dar:
Z: Eine Zentrale mit Verteil- oder Knotenfunktion;
D1 bis D3: Zwischen- oder Endgeräte in einem Sternnetz;
U1 bis U3: Optische Sternleitungen zwischen der Zentrale Z
und jeweils einem der Zwischen- oder Endgeräte D1 bis D3;
T11 . . . T1n, T21 . . . T2n, T31 . . . T3n: Weiterführende optische
Leitungen im Sternnetz von jeweils einem der Zwischen- oder
Endgeräte D1, D2 beziehungsweise D3 zu
Teilnehmereinrichtungen;
R: Eine bidirektional betreibbare Ringleitung auf der selben
Netzebene wie die Sternleitungen U1 bis U3;
S1, S2: Gegensinnig steuerbare Schalter zum Verbinden der
Ringleitung R mit der Zentrale Z;
K1 bis K3: Bidirektionale Verzweigungspunkte (bevorzugt in
Gestalt optischer Konferenzgabeln) in der Ringleitung R;
A1 bis A3: Verbindungsleitungen zwischen jeweils einem
Verzweigungspunkt und einem Zwischen- oder Endgerät. . Constitute in Figure 1 represent:
Z: A center with a distribution or node function;
D1 to D3: intermediate or terminal devices in a star network;
U1 to U3: optical star lines between the control center Z and one of the intermediate or terminal devices D1 to D3;
T11. . . T1n, T21. . . T2n, T31. . . T3n: further optical lines in the star network from one of the intermediate or terminal devices D1, D2 or D3 to subscriber devices;
R: A bidirectionally operable ring line on the same network level as the star lines U1 to U3;
S1, S2: Oppositely controllable switches for connecting the ring line R to the center Z;
K1 to K3: bidirectional branching points (preferably in the form of optical conference forks) in the ring line R;
A1 to A3: connecting lines between a branch point and an intermediate or terminal device.
Fig. 2 zeigt eine Gestaltungsmöglichkeit eines Zwischen- oder Endgerätes D′, das sowohl an eine Sternleitung U als auch an eine Verbindungsleitung A angeschlossen ist. Zur Umschaltung zwischen diesen beiden Leitungen dient ein optischer Umschalter UO, dem ein opto-elektrischer Wandler W folgt. Fig. 2 shows a design option of an intermediate or terminal D ', which is connected to both a star line U and a connecting line A. An optical switch UO, which is followed by an opto-electrical converter W, is used to switch between these two lines.
Fig. 3 zeigt eine Gestaltungsmöglichkeit eines alternativen Zwischen- oder Endgerätes D′′, bei dem zunächst über opto elektronische Wandler WU beziehungsweise WA elektrische Signale erzeugt werden, zwischen denen durch einen elektrischen Umschalter UE umgeschaltet werden kann. Fig. 3 shows a design option of an alternative intermediate or terminal D '', in which electrical signals are first generated via opto-electronic converter WU or WA, between which can be switched by an electrical switch UE.
Alle Verbindungen in den Figuren sind nur in einer Übertragungsrichtung (von der Zentrale zu den Teilnehmereinrichtungen) dargestellt, jedoch in Wirklichkeit bidirektional zu betrachten, wobei die Übertragung entweder auf einem gemeinsamen oder zwei getrennten Lichtwellenleitern erfolgen kann.All connections in the figures are only in one Direction of transmission (from headquarters to Subscriber facilities), but in reality to be considered bidirectionally, with either transmission on a common or two separate Optical fibers can be made.
Jedes der dargestellten Zwischen- oder Endgeräte, zum Beispiel Demultiplexer STM-4, ist auf zweierlei Weise an die Zentrale Z anschließbar. Die normale Verbindung verläuft sternförmig über die Sternleitungen U1 bis U3. Darüberhinaus gibt es noch einen zweiten, bedarfsweise aktivierbaren Übertragungsweg, der über eine an die Zentrale Z angeschlossene, für alle Zwischen- oder Endgeräte D1 bis D3 gemeinsame Ringleitung R führt, die in räumlicher Nähe zu allen Zwischen- oder Endgeräten der selben Netzebene des gesamten Lichtwellenleiter-Netzes verlaufen sollte. Die Ringleitung kann über die gegensinnig gesteuerten Schalter 51, 52 bezüglich der Übertragungsrichtung entweder im Uhrzeigersinn oder umgekehrt betrieben werden.Each of the intermediate or terminal devices shown, for example demultiplexer STM-4, can be connected to the control center Z in two ways. The normal connection runs in a star shape over the star lines U1 to U3. In addition, there is a second transmission path that can be activated as required, which leads via a ring line R connected to the central station Z and common to all intermediate or terminal devices D1 to D3, which is in spatial proximity to all intermediate or terminal devices of the same network level of the entire optical waveguide Network should run. The ring line can be operated via the counter-controlled switches 51 , 52 with respect to the direction of transmission either clockwise or vice versa.
Die Anschaltung der Zwischen- oder Endgeräte D1 bis D3 an die Ringleitung R erfolgt mittels optischer Konferenzgabeln K1 bis K3, welche gleichrangigen Verkehr zwischen (d. h. von beziehungsweise zu) drei Toren erlauben und die aus einer Zusammenschaltung dreier symmetrischer Gabeln bestehen. Die Ringleitung R wird nur im Bedarfsfalle aktiviert, d. h. einer der Schalter S1, S2 wird nur dann geschlossen, wenn eine der Sternleitungen U1 bis U3 unterbrochen ist. Die Ringleitung R kann aber auch dauernd für weniger wichtigen Verkehr zum Beispiel auf einer eigenen Wellenlänge benutzt werden, solange die Sternleitungen noch intakt sind, und nur im Bedarfsfalle als Ersatzweg benutzt werden.The connection of the intermediate or terminal devices D1 to D3 the ring line R takes place by means of optical conference forks K1 to K3, which rank traffic between (i.e. from allow three gates and one from one Interconnection of three symmetrical forks exist. The Ring line R is only activated when needed, i.e. H. one the switch S1, S2 is only closed when one of the Star lines U1 to U3 is interrupted. The ring line R can also be used continuously for less important traffic Example are used on their own wavelength, as long as the star lines are still intact, and only in If necessary, traps can be used as an alternative route.
Die Ringleitung R bietet eine Mehrwege-Ersatzschaltungsmöglichkeit für alle Zwischen- oder Endgeräte D1 bis D3. Durch die Möglichkeit des Betriebes im Uhrzeigersinn und im entgegengesetzten Sinn ist eine zusätzliche Redundanz erreicht, da auch eine Unterbrechung der Ringleitung selbst miterfaßt wird.The ring line R offers a multi-way equivalent circuit for any intermediate or Terminal devices D1 to D3. Due to the possibility of operating in Clockwise and in the opposite sense is one additional redundancy achieved because of an interruption the loop itself is included.
Claims (7)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19537103A DE19537103A1 (en) | 1995-10-05 | 1995-10-05 | Redundant fiber optic network |
PCT/DE1996/001686 WO1997013291A1 (en) | 1995-10-05 | 1996-09-09 | Redundant optical waveguide network |
BR9610728A BR9610728A (en) | 1995-10-05 | 1996-09-09 | Redundant network of light wave conductors |
EP96938925A EP0853829A1 (en) | 1995-10-05 | 1996-09-09 | Redundant optical waveguide network |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19537103A DE19537103A1 (en) | 1995-10-05 | 1995-10-05 | Redundant fiber optic network |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19537103A1 true DE19537103A1 (en) | 1997-04-10 |
Family
ID=7774096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19537103A Withdrawn DE19537103A1 (en) | 1995-10-05 | 1995-10-05 | Redundant fiber optic network |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0853829A1 (en) |
BR (1) | BR9610728A (en) |
DE (1) | DE19537103A1 (en) |
WO (1) | WO1997013291A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999037050A1 (en) * | 1998-01-03 | 1999-07-22 | British Telecommunications Public Limited Company | Communications system with star/ring topology |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2327020A (en) * | 1997-06-30 | 1999-01-06 | Ericsson Telefon Ab L M | A self-healing meshed network |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3726660A1 (en) * | 1987-08-11 | 1989-02-23 | Telefonbau & Normalzeit Gmbh | Optical fibre transmission system |
EP0305994A2 (en) * | 1987-08-31 | 1989-03-08 | Fujitsu Limited | Data communication system having means for switching between main and stand-by apparatuses |
DE3937738A1 (en) * | 1989-11-13 | 1991-05-16 | Standard Elektrik Lorenz Ag | SUBSCRIBER CONNECTION NODE OF A DIGITAL MESSAGE TRANSMISSION SYSTEM |
DE4113795C1 (en) * | 1991-04-25 | 1992-12-17 | Krone Ag, 1000 Berlin, De | Optical light beam distributor for fibre=optic network - has beam deflector in form of truncated equilateral pyramid between input dispensing optics and output focusing optics |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3422219A1 (en) * | 1984-06-15 | 1985-12-19 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Optical data transmission system in the access network |
DE3836773A1 (en) * | 1988-10-28 | 1990-05-23 | Licentia Gmbh | Network access circuit |
DE4318732A1 (en) * | 1993-06-05 | 1994-12-08 | Sel Alcatel Ag | Optical network |
-
1995
- 1995-10-05 DE DE19537103A patent/DE19537103A1/en not_active Withdrawn
-
1996
- 1996-09-09 BR BR9610728A patent/BR9610728A/en not_active Application Discontinuation
- 1996-09-09 EP EP96938925A patent/EP0853829A1/en not_active Withdrawn
- 1996-09-09 WO PCT/DE1996/001686 patent/WO1997013291A1/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3726660A1 (en) * | 1987-08-11 | 1989-02-23 | Telefonbau & Normalzeit Gmbh | Optical fibre transmission system |
EP0305994A2 (en) * | 1987-08-31 | 1989-03-08 | Fujitsu Limited | Data communication system having means for switching between main and stand-by apparatuses |
DE3937738A1 (en) * | 1989-11-13 | 1991-05-16 | Standard Elektrik Lorenz Ag | SUBSCRIBER CONNECTION NODE OF A DIGITAL MESSAGE TRANSMISSION SYSTEM |
DE4113795C1 (en) * | 1991-04-25 | 1992-12-17 | Krone Ag, 1000 Berlin, De | Optical light beam distributor for fibre=optic network - has beam deflector in form of truncated equilateral pyramid between input dispensing optics and output focusing optics |
Non-Patent Citations (1)
Title |
---|
LUTZKE,Dieter: Licht Wellenleiter Technik, Pflaum Verlag, München, 1986, S.327-331 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999037050A1 (en) * | 1998-01-03 | 1999-07-22 | British Telecommunications Public Limited Company | Communications system with star/ring topology |
Also Published As
Publication number | Publication date |
---|---|
BR9610728A (en) | 1999-07-13 |
EP0853829A1 (en) | 1998-07-22 |
WO1997013291A1 (en) | 1997-04-10 |
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Legal Events
Date | Code | Title | Description |
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8139 | Disposal/non-payment of the annual fee |