ES2066862T3 - Sincronizacion de trama en una red de conmutadores espaciales opticos multiplexados en tiempo. - Google Patents

Sincronizacion de trama en una red de conmutadores espaciales opticos multiplexados en tiempo.

Info

Publication number
ES2066862T3
ES2066862T3 ES89311644T ES89311644T ES2066862T3 ES 2066862 T3 ES2066862 T3 ES 2066862T3 ES 89311644 T ES89311644 T ES 89311644T ES 89311644 T ES89311644 T ES 89311644T ES 2066862 T3 ES2066862 T3 ES 2066862T3
Authority
ES
Spain
Prior art keywords
remote
optical space
main optical
signal
auxiliary equipment
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.)
Expired - Lifetime
Application number
ES89311644T
Other languages
English (en)
Inventor
Martin Eisenberg
Jack M Holtzman
Nader Mehravari
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
AT&T Corp
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 AT&T Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of ES2066862T3 publication Critical patent/ES2066862T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0682—Clock or time synchronisation in a network by delay compensation, e.g. by compensation of propagation delay or variations thereof, by ranging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0652—Synchronisation among time division multiple access [TDMA] nodes, e.g. time triggered protocol [TTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0008—Synchronisation information channels, e.g. clock distribution lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

EN UNA RED DE CONMUTACION OPTICA, UN CONMUTADOR ESPACIAL OPTICO PRINCIPAL SE ENCUENTRA INTERCONECTADO CON EQUIPOS AUXILIARES REMOTOS PARA CONMUTAR MENSAJES MULTIPLEXADOS EN BLOQUE ENTRE LOS EQUIPOS REMOTOS. EL CONMUTADOR ESPACIAL OPTICO PRINCIPAL RESPONDE A UN RELOJ DE REFERENCIA DE FRECUENCIA Y PASA POR UNA SECUENCIA DE ESTADOS O CONFIGURACIONES, PARA ESTABLECER DIVERSAS RUTAS ENTRE LOS EQUIPOS REMOTOS PARA ENCAMINAR ADECUADAMENTE LOS MENSAJES A LOS DESTINOS CORRECTOS. EL RELOJ DE REFERENCIA DE FRECUENCIA SE DISTRIBUYE TAMBIEN A LOS EQUIPOS REMOTOS. DURANTE UNO DE LOS ESTADOS POR CADA ESTRUCTURA, CADA EQUIPO AUXILIAR REMOTO TRANSMITE UNA SEÑAL DE "FIRMA" DIFERENTE. TODOS LOS EQUIPOS AUXILIARES SE ENCUENTRAN CONECTADOS POR MEDIO DEL CONMUTADOR ESPACIAL OPTICO PRINCIPAL PARA DEVOLVERLES SUS PROPIAS SEÑALES TRANSMITIDAS DURANTE ESE INTERVALO DE TIEMPO. CADA EQUIPO AUXILIAR REMOTO COMPARA LA SEÑAL DEVUELTA CON LA SEÑAL DE FIRMA TRANSMITIDA ORIGINALMENTE PARA DETERMINAR CUANTO HA VARIADO LA DEMORA DEL TRAYECTO DE IDA Y VUELTA A PARTIR DE UN VALOR NOMINAL. LA FASE DE UNA SEÑAL DEL RELOJ DE CONTROL LOCAL EN EL EQUIPO AUXILIAR SE AJUSTA PARA CONTRARRESTAR LA VARIACION DE LA DEMORA DEL VIAJE DE IDA Y VUELTA. DE ESTE MODO SE AJUSTA EL FUNCIONAMIENTO DEL EQUIPO AUXILIAR EN SINCRONIZACION CON EL CONMUTADOR ESPACIAL OPTICO PRINCIPAL, DE FORMA QUE LOS MENSAJES TRANSMITIDOS DEL EQUIPO AUXILIAR LLEGUEN AL CONMUTADOR ESPACIAL OPTICO PRINCIPAL EN EL MOMENTO APROPIADO RESPECTO A LA RECONFIGURACION PERIODICA DEL CONMUTADOR ESPACIAL OPTICO PRINCIPAL.
ES89311644T 1988-11-18 1989-11-10 Sincronizacion de trama en una red de conmutadores espaciales opticos multiplexados en tiempo. Expired - Lifetime ES2066862T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/275,802 US4912706A (en) 1988-11-18 1988-11-18 Frame synchronization in a network of time multiplexed optical space switches

Publications (1)

Publication Number Publication Date
ES2066862T3 true ES2066862T3 (es) 1995-03-16

Family

ID=23053861

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89311644T Expired - Lifetime ES2066862T3 (es) 1988-11-18 1989-11-10 Sincronizacion de trama en una red de conmutadores espaciales opticos multiplexados en tiempo.

Country Status (7)

Country Link
US (1) US4912706A (es)
EP (1) EP0369690B1 (es)
JP (1) JPH0648870B2 (es)
AU (1) AU610442B2 (es)
CA (1) CA1312682C (es)
DE (1) DE68920957T2 (es)
ES (1) ES2066862T3 (es)

Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8903567D0 (en) * 1989-02-16 1989-04-05 British Telecomm An optical network
AU627953B2 (en) * 1989-11-15 1992-09-03 Digital Equipment Corporation Integrated communications link having dynamically allocatable bandwidth and a protocol for transmission or allocation information over the link
US5600672A (en) 1991-03-27 1997-02-04 Matsushita Electric Industrial Co., Ltd. Communication system
USRE39890E1 (en) 1991-03-27 2007-10-23 Matsushita Electric Industrial Co., Ltd. Communication system
USRE42643E1 (en) 1991-03-27 2011-08-23 Panasonic Corporation Communication system
USRE40241E1 (en) 1991-03-27 2008-04-15 Matsushita Electric Industrial Co., Ltd. Communication system
US5206753A (en) * 1991-07-31 1993-04-27 At&T Bell Laboratories Optical switching system
US6724976B2 (en) 1992-03-26 2004-04-20 Matsushita Electric Industrial Co., Ltd. Communication system
USRE38513E1 (en) 1992-03-26 2004-05-11 Matsushita Electric Industrial Co., Ltd. Communication system
US7894541B2 (en) * 1992-03-26 2011-02-22 Panasonic Corporation Communication system
US5802241A (en) 1992-03-26 1998-09-01 Matsushita Electric Industrial Co., Ltd. Communication system
CA2226489C (en) * 1992-03-26 2001-07-24 Matsushita Electric Industrial Co., Ltd. Communication system
US7158577B1 (en) 1992-03-26 2007-01-02 Matsushita Electric Industrial Co., Ltd. Communication system
US6728467B2 (en) * 1992-03-26 2004-04-27 Matsushita Electric Industrial Co., Ltd. Communication system
DE59310304D1 (de) * 1992-05-15 2002-10-31 Siemens Ag Optische Koppeleinrichtung
US5459607A (en) * 1993-04-19 1995-10-17 C-Cor/Comlux, Inc. Synchronous optical digital transmission system and method
DE4329733A1 (de) * 1993-09-03 1995-03-09 Sel Alcatel Ag Zeitmultiplex-Verfahren
EP0723721A1 (en) * 1994-08-12 1996-07-31 Koninklijke Philips Electronics N.V. Optical synchronisation arrangement and transmission system
FR2726726A1 (fr) * 1994-11-04 1996-05-10 Guillemot Christian Systeme de commutateur pour paquets optiques
JPH10512685A (ja) * 1995-01-19 1998-12-02 ブリティッシュ・テレコミュニケーションズ・パブリック・リミテッド・カンパニー 光スイッチ
US5638379A (en) * 1995-06-06 1997-06-10 Symmetricom, Inc. Encoding system for distribution of synchronization
US5828670A (en) * 1995-06-06 1998-10-27 Symmetricom, Inc. Distribution of synchronization in a synchronous optical environment
JP3417741B2 (ja) * 1995-10-06 2003-06-16 富士通株式会社 取引制御システム
US6236623B1 (en) * 1998-10-16 2001-05-22 Moore Industries System and method for synchronizing clocks in a plurality of devices across a communication channel
US6363086B1 (en) * 1998-12-03 2002-03-26 Telefonaktiebolaget L M Ericsson (Publ) Method for combining signals on a digital interface
SE9901654L (sv) * 1999-05-06 2001-01-03 Net Insight Ab Synkroniseringsförfarande och -anordning
US6646953B1 (en) 2000-07-06 2003-11-11 Rambus Inc. Single-clock, strobeless signaling system
US6643787B1 (en) 1999-10-19 2003-11-04 Rambus Inc. Bus system optimization
JP3536909B2 (ja) * 1999-12-24 2004-06-14 日本電気株式会社 交換装置とスクランブル方法
US6870831B2 (en) 2000-05-04 2005-03-22 Pmc-Sierra, Inc. Flexible, self-aligning time and space switch fabrics
US20020131103A1 (en) * 2001-03-16 2002-09-19 Nicholas Bambos Method and system for reconfiguring a network element such as an optical network element
JP4704214B2 (ja) * 2006-01-11 2011-06-15 富士通株式会社 光伝送システム
US7630597B2 (en) * 2006-05-30 2009-12-08 Rogers Communications Inc. Master/slave multiple path optical switching device
JP4823056B2 (ja) * 2006-12-27 2011-11-24 富士通株式会社 光伝送システム
JP4757215B2 (ja) * 2007-02-28 2011-08-24 富士通株式会社 光伝送システムおよび光伝送方法
JP5520209B2 (ja) 2010-12-16 2014-06-11 富士通テレコムネットワークス株式会社 光パケット交換システムおよび光パケット送信装置
GB201717689D0 (en) * 2017-10-27 2017-12-13 Microsoft Technology Licensing Llc Phase cashing for fast data recovery
JP7174271B2 (ja) * 2018-07-10 2022-11-17 株式会社ソシオネクスト 位相同期回路、送受信回路及び集積回路
GB201905471D0 (en) 2019-04-17 2019-05-29 Microsoft Technology Licensing Llc Amplitude caching in receive-from-many communications networks
US12353988B2 (en) 2020-07-09 2025-07-08 Celestial Ai Inc. Neuromorphic photonics with coherent linear neurons
US12271595B2 (en) 2022-03-18 2025-04-08 Celestial Ai Inc. Photonic memory fabric for system memory interconnection
US12564047B2 (en) 2022-10-28 2026-02-24 Celestial Ai Inc. Thermal control of an optical component
EP4336859A3 (en) * 2021-06-18 2024-06-05 Celestial AI Inc. Electro-photonic network for machine learning
US12436346B2 (en) 2022-03-18 2025-10-07 Celestial Ai Inc. Optically bridged multicomponent package with extended temperature range
KR20240155370A (ko) 2022-03-18 2024-10-28 셀레스티얼 에이아이 인코포레이티드 광 멀티 다이 상호 연결 브리지(omib)
US20240038657A1 (en) 2022-07-26 2024-02-01 Celestial Ai Inc. Via formed using a partial plug that extends into a substrate
US12283584B2 (en) 2022-07-26 2025-04-22 Celestial Ai Inc. Electrical bridge package with integrated off-bridge photonic channel interface
US12191257B2 (en) 2022-07-26 2025-01-07 Celestial Ai Inc. Electrical bridge package with integrated off-bridge photonic channel interface
US12217056B2 (en) 2023-01-27 2025-02-04 Celestial Ai Inc. Load/store unit for a tensor engine and methods for loading or storing a tensor

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3201934A1 (de) * 1982-01-22 1983-08-04 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt System zur uebertragung von digitalen informatonssignalen
JPS5922464A (ja) * 1982-07-29 1984-02-04 Fuji Xerox Co Ltd タイミング同期回路
JPS61145995A (ja) * 1984-12-20 1986-07-03 Toshiba Corp 集線分配装置
JPS61169047A (ja) * 1985-01-22 1986-07-30 Kokusai Denshin Denwa Co Ltd <Kdd> 光フアイバ伝送路の伝搬遅延時間変動量検出方式
JPS61219237A (ja) * 1985-03-26 1986-09-29 Anritsu Corp 双方向性時分割光通信用端局装置
JPS62125725A (ja) * 1985-11-26 1987-06-08 Nec Corp 光信号伝送システム
US4731878A (en) * 1985-11-29 1988-03-15 American Telephone And Telegraph Company, At&T Bell Laboratories Self-routing switch node combining electronic and photonic switching
JPH0761183B2 (ja) * 1986-01-09 1995-06-28 株式会社東芝 集線分配装置
US4701907C1 (en) * 1986-02-03 2002-08-27 Collins Mary Dynamically reconfigurable time-space-time digital switch and network
US4736462A (en) * 1986-03-20 1988-04-05 American Telephone And Telegraph Company, At&T Bell Laboratories Photonic switching
US4736393A (en) * 1986-04-16 1988-04-05 American Telephone And Telegraph Co., At&T Information Systems, Inc. Distributed timing control for a distributed digital communication system
US4829511A (en) * 1987-10-14 1989-05-09 International Business Machines Corporation Switched network of optical buses

Also Published As

Publication number Publication date
DE68920957D1 (de) 1995-03-16
EP0369690A2 (en) 1990-05-23
JPH02186898A (ja) 1990-07-23
JPH0648870B2 (ja) 1994-06-22
EP0369690A3 (en) 1991-06-12
AU610442B2 (en) 1991-05-16
DE68920957T2 (de) 1995-06-14
CA1312682C (en) 1993-01-12
US4912706A (en) 1990-03-27
EP0369690B1 (en) 1995-02-01
AU4388489A (en) 1990-05-31

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