GB2477057B - Line-timing in packet-based networks - Google Patents

Line-timing in packet-based networks

Info

Publication number
GB2477057B
GB2477057B GB1106984A GB201106984A GB2477057B GB 2477057 B GB2477057 B GB 2477057B GB 1106984 A GB1106984 A GB 1106984A GB 201106984 A GB201106984 A GB 201106984A GB 2477057 B GB2477057 B GB 2477057B
Authority
GB
United Kingdom
Prior art keywords
packet
timing
line
based networks
networks
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 - Fee Related
Application number
GB1106984A
Other versions
GB201106984D0 (en
GB2477057A (en
Inventor
P Stephan Bedrosian
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.)
Agere Systems LLC
Original Assignee
Agere Systems LLC
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
Priority claimed from US11/115,715 external-priority patent/US7539200B2/en
Application filed by Agere Systems LLC filed Critical Agere Systems LLC
Publication of GB201106984D0 publication Critical patent/GB201106984D0/en
Publication of GB2477057A publication Critical patent/GB2477057A/en
Application granted granted Critical
Publication of GB2477057B publication Critical patent/GB2477057B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0685—Clock or time synchronisation in a node; Intranode synchronisation
    • H04J3/0688—Change of the master or reference, e.g. take-over or failure of the master
    • 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
    • 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
    • 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
    • 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
    • H04J3/0697—Synchronisation in a packet node
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Hardware Design (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
GB1106984A 2005-04-27 2006-04-21 Line-timing in packet-based networks Expired - Fee Related GB2477057B (en)

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
GB0607970A GB2427327B (en) 2005-04-27 2006-04-21 Line-timing in packet-based networks

Publications (3)

Publication Number Publication Date
GB201106984D0 GB201106984D0 (en) 2011-06-08
GB2477057A GB2477057A (en) 2011-07-20
GB2477057B true GB2477057B (en) 2011-09-07

Family

ID=44189179

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1106986A Expired - Fee Related GB2477058B (en) 2005-04-27 2006-04-21 Line-timing in packet-based networks
GB1106984A Expired - Fee Related GB2477057B (en) 2005-04-27 2006-04-21 Line-timing in packet-based networks

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1106986A Expired - Fee Related GB2477058B (en) 2005-04-27 2006-04-21 Line-timing in packet-based networks

Country Status (1)

Country Link
GB (2) GB2477058B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102404102A (en) * 2011-11-16 2012-04-04 中兴通讯股份有限公司 Method and device for synchronizing Ethernet

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1155234A (en) * 1997-07-30 1999-02-26 Fujitsu Ltd Clock frequency precision monitor circuit
EP0991216A2 (en) * 1998-09-29 2000-04-05 Hewlett-Packard Company Organization of time synchronization in a distributed system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1155234A (en) * 1997-07-30 1999-02-26 Fujitsu Ltd Clock frequency precision monitor circuit
EP0991216A2 (en) * 1998-09-29 2000-04-05 Hewlett-Packard Company Organization of time synchronization in a distributed system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEEE Standard 1588 2002 IEEE Standard for a Precision Synchronisation Protocol for Networked Measurement and Control Systems , IEEE, 8th November 2002, see especially pages 10-25, 64-76. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102404102A (en) * 2011-11-16 2012-04-04 中兴通讯股份有限公司 Method and device for synchronizing Ethernet
CN102404102B (en) * 2011-11-16 2017-07-21 南京中兴软件有限责任公司 A kind of method and apparatus of synchronous ethernet

Also Published As

Publication number Publication date
GB2477058B (en) 2011-09-07
GB201106984D0 (en) 2011-06-08
GB2477057A (en) 2011-07-20
GB201106986D0 (en) 2011-06-08
GB2477058A (en) 2011-07-20

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20160421