CN1855784A - 基于分组的网络内的线路定时 - Google Patents
基于分组的网络内的线路定时 Download PDFInfo
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- CN1855784A CN1855784A CNA2006100770276A CN200610077027A CN1855784A CN 1855784 A CN1855784 A CN 1855784A CN A2006100770276 A CNA2006100770276 A CN A2006100770276A CN 200610077027 A CN200610077027 A CN 200610077027A CN 1855784 A CN1855784 A CN 1855784A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000001360 synchronised effect Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000009795 derivation Methods 0.000 claims description 11
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 2
- 238000012423 maintenance Methods 0.000 description 12
- ORQBXQOJMQIAOY-UHFFFAOYSA-N nobelium Chemical compound [No] ORQBXQOJMQIAOY-UHFFFAOYSA-N 0.000 description 10
- 230000007774 longterm Effects 0.000 description 9
- 238000012552 review Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
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- 230000000052 comparative effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
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- 229910052701 rubidium Inorganic materials 0.000 description 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Classifications
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- 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
- H04J3/0658—Clock or time synchronisation among packet nodes
-
- 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
- H04J3/0632—Synchronisation of packets and cells, e.g. transmission of voice via a packet network, circuit emulation service [CES]
-
- 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
- H04J3/0641—Change of the master or reference, e.g. take-over or failure of the master
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/14—Interfaces between hierarchically different network devices between access point controllers and backbone network device
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Hardware Design (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Small-Scale Networks (AREA)
Abstract
Description
信号对 | 结果 | 结论 |
A对B | 频率偏移小 | A和B都是好的 |
A对C | 频率偏移大 | A或C或者A和C是差的 |
A对D | 频率偏移小 | A和D都是好的 |
B对C | 频率偏移大 | B或C或者B和C是差的 |
B对D | 频率偏移小 | B和D都是好的 |
C对D | 频率偏移大 | C或D或者C和D是差的 |
值 | 规定 | 意义 |
1 | Stratum 1(G.811)可追溯 | 长期精度为0.01PPB |
2 | 同步可追溯性未知 | 网络单元不能确定它自己的时钟信号的精度 |
3 | Stratum 2(G.812型II)可追溯 | 长期精度为16PPB,保持精度为0.1PPB |
4 | TNC(G.812型V)可追溯 | 转接节点时钟可追溯,长期精度为100PPB,保持精度为1.5PPB |
5 | Stratum 3E(G.812型III)可追溯 | 长期精度为4.6PPM,保持精度为12PPB |
6 | Stratum 3(G.812型IV)可追溯 | 长期精度为4.6PPM,保持精度为0.37PPM |
7 | SONET最小时钟(G.813选项2)可追溯 | 长期精度为20PPM,保持精度为4.6PPM |
8 | Stratum 4/4E可追溯 | 长期精度为32PPM |
9 | 不用于同步 | 在任何情况下不应使用所恢复的时钟 |
TBD | 可由网络操作员提供 | 用户可以指定取换任何其他定义值的值 |
Claims (28)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/115,715 US7539200B2 (en) | 2005-04-27 | 2005-04-27 | Line-timing in packet-based networks |
US11/115,715 | 2005-04-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1855784A true CN1855784A (zh) | 2006-11-01 |
CN1855784B CN1855784B (zh) | 2011-04-13 |
Family
ID=36581065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2006100770276A Active CN1855784B (zh) | 2005-04-27 | 2006-04-26 | 基于分组的网络内的线路定时 |
Country Status (5)
Country | Link |
---|---|
US (3) | US7539200B2 (zh) |
JP (2) | JP5039319B2 (zh) |
KR (1) | KR101234360B1 (zh) |
CN (1) | CN1855784B (zh) |
GB (1) | GB2427327B (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102714590A (zh) * | 2010-01-12 | 2012-10-03 | 维特赛半导体公司 | 用于在不使业务中断的情况下切换1000base-t链路中的主装置/从装置计时的方法 |
CN106464397A (zh) * | 2014-05-08 | 2017-02-22 | 诺基亚通信公司 | 在分组交换网络中动态重新分配定时和同步的系统和方法 |
CN112887122A (zh) * | 2019-11-29 | 2021-06-01 | 华为技术有限公司 | 一种时钟故障定位方法和网络设备 |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7539200B2 (en) * | 2005-04-27 | 2009-05-26 | Agere Systems Inc. | Line-timing in packet-based networks |
FR2886793A1 (fr) * | 2005-06-06 | 2006-12-08 | France Telecom | Procede et systeme de transmission d'un rythme de synchronisation sur un lien reseau de technologie ethernet et leurs applications |
US7835366B2 (en) * | 2005-11-01 | 2010-11-16 | Ciena Corporation | Three-way message exchange clock synchronization |
US7492732B2 (en) * | 2005-11-01 | 2009-02-17 | Nortel Networks Limited | Differential clock recovery in packet networks |
US8306070B2 (en) | 2005-12-02 | 2012-11-06 | Broadcom Corporation | Method and system for speed negotiation for twisted pair links using intelligent E-FIFO in fibre channel systems |
DE602007010225D1 (de) * | 2006-10-18 | 2010-12-16 | Tellabs Oy | Synchronisationsverfahren und -anordnung |
US8199695B2 (en) * | 2007-04-10 | 2012-06-12 | International Business Machines Corporation | Clock signal synchronization among computers in a network |
ATE532280T1 (de) | 2007-06-28 | 2011-11-15 | Alcatel Lucent | Verfahren zur verteilung eines uhrensignals in einem schaltungsemulierungs-dienstnetzwerk |
US7864747B2 (en) | 2008-03-28 | 2011-01-04 | Embarq Holdings Company, Llc | System and method for communicating timing to a remote node |
JP4628440B2 (ja) * | 2008-03-31 | 2011-02-09 | 富士通株式会社 | クロック発生機能付き装置、基準周波数等設定方法、および基準周波数等調整方法 |
WO2009126665A1 (en) | 2008-04-07 | 2009-10-15 | Actelis Networks Ltd. | Method and apparatus for resilient clock transfer over multiple dsl lines |
JP5143952B2 (ja) * | 2009-04-24 | 2013-02-13 | 三菱電機株式会社 | 無線基地局 |
CN101931524A (zh) * | 2009-06-25 | 2010-12-29 | 中兴通讯股份有限公司 | 一种同步数字传输网的时钟源选择方法 |
KR101298806B1 (ko) * | 2009-12-21 | 2013-08-22 | 한국전자통신연구원 | 다수의 이더넷 물리층 인터페이스를 지원하는 클럭 운용 방법 및 그 장치 |
EP2521292B1 (en) * | 2011-05-06 | 2017-08-09 | ADVA Optical Networking SE | Clock monitoring in a synchronous network |
US8934891B2 (en) * | 2012-04-19 | 2015-01-13 | Broadcom Corporation | Small cell network self-synchronization |
US9301267B2 (en) * | 2012-08-01 | 2016-03-29 | Broadcom Corporation | Radio over Ethernet |
US9513388B2 (en) * | 2014-03-12 | 2016-12-06 | Sercel | Method for providing synchronization in a data acquisition system |
FR3026255B1 (fr) * | 2014-09-24 | 2017-12-22 | Thales Sa | Architecture d'echange de donnees numeriques utilisable dans des applications avioniques |
EP3396877A4 (en) * | 2016-01-19 | 2019-01-02 | Huawei Technologies Co., Ltd. | Clock packet transmission method and device |
JP2018074375A (ja) * | 2016-10-28 | 2018-05-10 | 富士通株式会社 | クロック再生回路,半導体集積回路装置およびrfタグ |
US10390116B1 (en) * | 2018-11-30 | 2019-08-20 | Ciena Corporation | Optical modem line timing |
JP7301689B2 (ja) | 2019-09-13 | 2023-07-03 | 株式会社東芝 | Ptpメッセージ選択方法およびプログラム、ならびにptpスレーブ装置 |
Family Cites Families (25)
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JPS6066539A (ja) | 1983-09-22 | 1985-04-16 | Nec Corp | クロック信号選択方式 |
SU1270764A1 (ru) | 1984-07-25 | 1986-11-15 | Военная Ордена Ленина,Ордена Октябрьской Революции И Ордена Суворова Академия Им.Ф.Э.Дзержинского | Устройство дл определени выборочной медианы |
FR2638591B1 (fr) * | 1988-11-03 | 1990-11-30 | Telephonie Ind Commerciale | Agencement de synchronisation pour autocommutateur numerique prive raccorde a un reseau rnis |
JP3244247B2 (ja) * | 1994-08-24 | 2002-01-07 | 日本電信電話株式会社 | クロック信号現用予備切替方式 |
JPH08256136A (ja) * | 1995-03-17 | 1996-10-01 | Fujitsu Ltd | 同期クロック切替装置 |
JP3298353B2 (ja) * | 1995-03-20 | 2002-07-02 | 富士通株式会社 | 同期信号源選択方式 |
US5982831A (en) * | 1996-02-21 | 1999-11-09 | Hewlett-Packard Company | Feed forward method and apparatus for generating a clock signal |
JPH1155234A (ja) | 1997-07-30 | 1999-02-26 | Fujitsu Ltd | クロック周波数精度監視回路 |
JP3460118B2 (ja) * | 1998-08-26 | 2003-10-27 | 富士通株式会社 | 同期網システムのクロック管理方法及び伝送装置 |
US6618358B2 (en) * | 1998-09-24 | 2003-09-09 | Cisco Technology, Inc. | Method and apparatus for switching a clock source from among multiple T1/E1 lines with user defined priority |
US6665316B1 (en) | 1998-09-29 | 2003-12-16 | Agilent Technologies, Inc. | Organization of time synchronization in a distributed system |
JP2000350245A (ja) * | 1999-06-03 | 2000-12-15 | Matsushita Electric Ind Co Ltd | 無線通信システム |
US6810270B1 (en) * | 2000-11-02 | 2004-10-26 | Ericsson Inc. | Providing reference signal to radio heads |
US20030012158A1 (en) * | 2001-01-25 | 2003-01-16 | Hang Jin | System and method for synchronizing a base station in a distributed radio system |
KR100401199B1 (ko) * | 2001-09-27 | 2003-10-10 | 삼성전자주식회사 | 공중용 및 사설용 이동통신 시스템에서의 신호 공급 장치 |
JP3886392B2 (ja) * | 2002-02-20 | 2007-02-28 | Necエンジニアリング株式会社 | クロック再生回路 |
US7391975B2 (en) * | 2002-04-29 | 2008-06-24 | Texas Instruments Incorporated | Method of synchronizing servo timing in an optical wireless link |
CN100433593C (zh) * | 2002-05-21 | 2008-11-12 | 中兴通讯股份有限公司 | 一种宽带码分多址系统中时间同步的方法 |
JP3993508B2 (ja) | 2002-12-02 | 2007-10-17 | 株式会社エヌ・ティ・ティ・ドコモ | 無線アクセスネットワークシステム、無線通信方法、同期サーバ及びノード装置 |
CN100488082C (zh) | 2003-07-28 | 2009-05-13 | 华为技术有限公司 | 时钟源频率偏移检测方法 |
CN1961522B (zh) * | 2004-05-28 | 2011-07-20 | 松下电器产业株式会社 | 传输流处理装置和传输流处理方法 |
JP2006217359A (ja) * | 2005-02-04 | 2006-08-17 | Matsushita Electric Ind Co Ltd | 移動体通信システムの同期装置及び同期方法 |
US7539200B2 (en) * | 2005-04-27 | 2009-05-26 | Agere Systems Inc. | Line-timing in packet-based networks |
EP3062580A1 (en) * | 2005-10-04 | 2016-08-31 | Telefonaktiebolaget LM Ericsson (publ) | Automatic configuration of pico radio base station |
EP2269362B1 (en) * | 2008-04-21 | 2018-06-13 | Telefonaktiebolaget LM Ericsson (publ) | Method for enabling communication between a user equipment and an ims gateway |
-
2005
- 2005-04-27 US US11/115,715 patent/US7539200B2/en active Active
-
2006
- 2006-04-21 GB GB0607970A patent/GB2427327B/en not_active Expired - Fee Related
- 2006-04-26 CN CN2006100770276A patent/CN1855784B/zh active Active
- 2006-04-27 JP JP2006122764A patent/JP5039319B2/ja not_active Expired - Fee Related
- 2006-04-27 KR KR1020060038091A patent/KR101234360B1/ko active IP Right Grant
-
2009
- 2009-02-12 US US12/369,878 patent/US8213436B2/en active Active
-
2012
- 2012-05-02 JP JP2012105019A patent/JP5563620B2/ja not_active Expired - Fee Related
- 2012-05-03 US US13/462,927 patent/US8774197B2/en active Active
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102714590A (zh) * | 2010-01-12 | 2012-10-03 | 维特赛半导体公司 | 用于在不使业务中断的情况下切换1000base-t链路中的主装置/从装置计时的方法 |
CN102714590B (zh) * | 2010-01-12 | 2015-03-25 | 维特赛半导体公司 | 用于在不使业务中断的情况下切换1000base-t链路中的主装置/从装置计时的方法 |
CN106464397A (zh) * | 2014-05-08 | 2017-02-22 | 诺基亚通信公司 | 在分组交换网络中动态重新分配定时和同步的系统和方法 |
CN112887122A (zh) * | 2019-11-29 | 2021-06-01 | 华为技术有限公司 | 一种时钟故障定位方法和网络设备 |
WO2021104522A1 (zh) * | 2019-11-29 | 2021-06-03 | 华为技术有限公司 | 一种时钟故障定位方法和网络设备 |
CN112887122B (zh) * | 2019-11-29 | 2022-11-04 | 华为技术有限公司 | 一种时钟故障定位方法和网络设备 |
Also Published As
Publication number | Publication date |
---|---|
CN1855784B (zh) | 2011-04-13 |
US20090141725A1 (en) | 2009-06-04 |
US8774197B2 (en) | 2014-07-08 |
KR20060113493A (ko) | 2006-11-02 |
JP2006311559A (ja) | 2006-11-09 |
US20060245453A1 (en) | 2006-11-02 |
JP5563620B2 (ja) | 2014-07-30 |
US20120218986A1 (en) | 2012-08-30 |
US8213436B2 (en) | 2012-07-03 |
GB2427327B (en) | 2011-07-06 |
GB0607970D0 (en) | 2006-05-31 |
GB2427327A (en) | 2006-12-20 |
US7539200B2 (en) | 2009-05-26 |
KR101234360B1 (ko) | 2013-02-15 |
JP2012186831A (ja) | 2012-09-27 |
JP5039319B2 (ja) | 2012-10-03 |
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