DE69938977D1 - Sdh sender und verfahren zum schalten des rahmentaktes in einem sdh sender - Google Patents
Sdh sender und verfahren zum schalten des rahmentaktes in einem sdh senderInfo
- Publication number
- DE69938977D1 DE69938977D1 DE69938977T DE69938977T DE69938977D1 DE 69938977 D1 DE69938977 D1 DE 69938977D1 DE 69938977 T DE69938977 T DE 69938977T DE 69938977 T DE69938977 T DE 69938977T DE 69938977 D1 DE69938977 D1 DE 69938977D1
- Authority
- DE
- Germany
- Prior art keywords
- sdh transmitter
- switching
- frame
- sdh
- transmitter
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/062—Synchronisation of signals having the same nominal but fluctuating bit rates, e.g. using buffers
- H04J3/0623—Synchronous multiplexing systems, e.g. synchronous digital hierarchy/synchronous optical network (SDH/SONET), synchronisation with a pointer process
-
- 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
- H04J3/0685—Clock or time synchronisation in a node; Intranode synchronisation
- H04J3/0691—Synchronisation in a TDM node
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1611—Synchronous digital hierarchy [SDH] or SONET
-
- 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
- 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
- H04J2203/0089—Multiplexing, e.g. coding, scrambling, SONET
- H04J2203/0091—Time slot assignment
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP1999/002825 WO2000074283A1 (fr) | 1999-05-28 | 1999-05-28 | Emetteur sdh et procede de commutation de synchronisation de trames dans un tel emetteur |
Publications (1)
Publication Number | Publication Date |
---|---|
DE69938977D1 true DE69938977D1 (de) | 2008-08-07 |
Family
ID=14235827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69938977T Expired - Lifetime DE69938977D1 (de) | 1999-05-28 | 1999-05-28 | Sdh sender und verfahren zum schalten des rahmentaktes in einem sdh sender |
Country Status (6)
Country | Link |
---|---|
US (1) | US7145920B2 (de) |
EP (1) | EP1180865B1 (de) |
JP (1) | JP3884956B2 (de) |
CN (1) | CN1254028C (de) |
DE (1) | DE69938977D1 (de) |
WO (1) | WO2000074283A1 (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2364506A1 (en) * | 2001-12-07 | 2003-06-07 | John W. Bogdan | Integrated timing systems and circuits |
US20030112827A1 (en) * | 2001-12-13 | 2003-06-19 | International Business Machines Corporation | Method and apparatus for deskewing parallel serial data channels using asynchronous elastic buffers |
IL152314A (en) * | 2002-10-16 | 2007-07-04 | Eci Telecom Ltd | Handling traffic in a synchronous communication network |
US7606269B1 (en) * | 2004-07-27 | 2009-10-20 | Intel Corporation | Method and apparatus for detecting and managing loss of alignment in a virtually concatenated group |
US7460037B2 (en) * | 2005-05-16 | 2008-12-02 | Ensequence, Inc. | Method and apparatus for replacing a portion of a first digital signal with a second digital signal |
CN1819499B (zh) * | 2006-01-06 | 2011-12-14 | 烽火通信科技股份有限公司 | 一种主备低阶指针处理电路同步的方法 |
JP2008035318A (ja) * | 2006-07-31 | 2008-02-14 | Nec Corp | 非同期信号の同期化多重方法および装置 |
JP4745915B2 (ja) * | 2006-08-11 | 2011-08-10 | 富士通株式会社 | 伝送装置 |
DK2100402T3 (da) * | 2006-12-29 | 2012-03-05 | Nokia Corp | Apparat , fremgangsmåder og computerprogramprodukter, der tilvejebringer begrænset anvendelse af Zadoff-Chu-sekvenser i pilot- eller præampelsignaler |
US7733248B2 (en) * | 2008-09-18 | 2010-06-08 | Fairchild Semiconductor Corporation | Measuring and regenerating a variable pulse width |
JP5088281B2 (ja) * | 2008-09-19 | 2012-12-05 | 沖電気工業株式会社 | パケット同期切替方法及びゲートウェイ装置 |
JP5359202B2 (ja) * | 2008-11-06 | 2013-12-04 | 富士通株式会社 | フレーム生成装置、光伝送システム、フレーム生成方法および光伝送方法 |
US8270289B2 (en) * | 2009-02-27 | 2012-09-18 | Lsi Corporation | Methods and apparatus for system framing synchronization control for a framer/mapper/multiplexor device with 1+1 and equipment protection |
US8462907B2 (en) * | 2009-11-10 | 2013-06-11 | Futurewei Technologies, Inc. | Method and apparatus to reduce wander for network timing reference distribution |
JP5565466B2 (ja) * | 2010-09-28 | 2014-08-06 | 富士通株式会社 | クロック変換装置、フレーム処理装置及び周波数制御方法 |
JP5620876B2 (ja) * | 2011-04-26 | 2014-11-05 | 株式会社日立製作所 | 網同期装置のシェルフ、網同期装置 |
JP6413464B2 (ja) * | 2014-08-15 | 2018-10-31 | 富士通株式会社 | 分離装置及び多重装置 |
JP6632876B2 (ja) * | 2015-12-04 | 2020-01-22 | シナプティクス・ジャパン合同会社 | バッファメモリ装置及び表示駆動デバイス |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2591295B2 (ja) * | 1989-09-14 | 1997-03-19 | 日本電気株式会社 | フレーム位相同期方式 |
JPH04291533A (ja) * | 1991-03-20 | 1992-10-15 | Fujitsu Ltd | クロック供給回路のクロック選択方式 |
JP2770584B2 (ja) * | 1991-03-25 | 1998-07-02 | 三菱電機株式会社 | フレーム位相同期回路 |
JPH05167551A (ja) * | 1991-12-18 | 1993-07-02 | Fujitsu Ltd | 同期通信システムにおけるポインターの付け替え方式 |
JPH05316065A (ja) * | 1992-05-14 | 1993-11-26 | Nippon Telegr & Teleph Corp <Ntt> | 小型高速通信装置 |
US5717693A (en) * | 1992-05-21 | 1998-02-10 | Alcatel Network Systems, Inc. | Sonet payload pointer processing and architecture |
JPH0787046A (ja) * | 1993-09-16 | 1995-03-31 | Fujitsu Ltd | 同期多重通信の回線設定位相調整装置 |
DE4442506A1 (de) * | 1994-11-30 | 1996-06-05 | Sel Alcatel Ag | Synchronisierungsüberachung in einem Netzwerk |
US5796795A (en) * | 1994-11-30 | 1998-08-18 | Gte Laboratories Incorporated | Data transferring circuit which aligns clock and data |
US6278718B1 (en) * | 1996-08-29 | 2001-08-21 | Excel, Inc. | Distributed network synchronization system |
JP3425046B2 (ja) * | 1996-11-29 | 2003-07-07 | 富士通株式会社 | 受信ポインタ処理装置 |
WO1998025436A2 (en) * | 1996-12-05 | 1998-06-11 | Alcatel Usa Sourcing, L.P. | System and method for controlling timing in a distributed digital cross-connect system |
DE19653261A1 (de) * | 1996-12-20 | 1998-06-25 | Alsthom Cge Alcatel | Synchrones digitales Nachrichtenübertragungssystem, Steuerungseinrichtung, Netzelement und zentraler Taktgenerator |
WO1999007077A2 (en) * | 1997-07-31 | 1999-02-11 | Stanford Syncom Inc. | Means and method for a synchronous network communications system |
US6163549A (en) * | 1997-08-29 | 2000-12-19 | Lucent Technologies Inc. | Synchronizing a central timing unit to an external link via a switching network |
-
1999
- 1999-05-28 CN CNB998166863A patent/CN1254028C/zh not_active Expired - Fee Related
- 1999-05-28 EP EP99922542A patent/EP1180865B1/de not_active Expired - Lifetime
- 1999-05-28 DE DE69938977T patent/DE69938977D1/de not_active Expired - Lifetime
- 1999-05-28 WO PCT/JP1999/002825 patent/WO2000074283A1/ja active IP Right Grant
- 1999-05-28 JP JP2001500472A patent/JP3884956B2/ja not_active Expired - Fee Related
-
2001
- 2001-10-31 US US10/007,759 patent/US7145920B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1180865A4 (de) | 2005-05-11 |
EP1180865A1 (de) | 2002-02-20 |
CN1352836A (zh) | 2002-06-05 |
EP1180865B1 (de) | 2008-06-25 |
WO2000074283A1 (fr) | 2000-12-07 |
CN1254028C (zh) | 2006-04-26 |
US20020064184A1 (en) | 2002-05-30 |
US7145920B2 (en) | 2006-12-05 |
JP3884956B2 (ja) | 2007-02-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |