WO2006122499A8 - Method and system of locking clock - Google Patents

Method and system of locking clock

Info

Publication number
WO2006122499A8
WO2006122499A8 PCT/CN2006/001007 CN2006001007W WO2006122499A8 WO 2006122499 A8 WO2006122499 A8 WO 2006122499A8 CN 2006001007 W CN2006001007 W CN 2006001007W WO 2006122499 A8 WO2006122499 A8 WO 2006122499A8
Authority
WO
WIPO (PCT)
Prior art keywords
clock
packet network
clock source
locked
transmission delay
Prior art date
Application number
PCT/CN2006/001007
Other languages
French (fr)
Chinese (zh)
Other versions
WO2006122499A1 (en
Inventor
Yuxin Su
Original Assignee
Huawei Tech Co Ltd
Yuxin Su
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 Huawei Tech Co Ltd, Yuxin Su filed Critical Huawei Tech Co Ltd
Publication of WO2006122499A1 publication Critical patent/WO2006122499A1/en
Publication of WO2006122499A8 publication Critical patent/WO2006122499A8/en

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
    • H04J3/0632—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
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems

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)
  • Mobile Radio Communication Systems (AREA)

Abstract

A method and system of locking clock enable devices to directly extract high precise reference lock on packet network. In the present invention, the characteristic that the minimum transmission delay of packet network is a fixed value is utilized and the minimum transmission delay may be precisely approached by transmitting and receiving sufficient quantity of a set of measurement frames. Reference clock source and clock source to be locked (for example, the clock in a base station) are connected by packet network, two sets of measurement frame successively spaced predetermined time (T) are transmitted and received, two transmission delay minimum values of the packet network are calculated respectively, clock offset between the reference clock source and the clock source to be locked in the period of T is obtained, clock frequency of the clock source to be locked is adjusted according to the clock offset. The transmission of measurement frames can use request transmission mode or periodic transmission mode.
PCT/CN2006/001007 2005-05-17 2006-05-17 Method and system of locking clock WO2006122499A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200510025869.2 2005-05-17
CN2005100258692A CN1866814B (en) 2005-05-17 2005-05-17 Clock locking method and its system

Publications (2)

Publication Number Publication Date
WO2006122499A1 WO2006122499A1 (en) 2006-11-23
WO2006122499A8 true WO2006122499A8 (en) 2008-01-03

Family

ID=37425707

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2006/001007 WO2006122499A1 (en) 2005-05-17 2006-05-17 Method and system of locking clock

Country Status (2)

Country Link
CN (1) CN1866814B (en)
WO (1) WO2006122499A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7948833B2 (en) 2007-07-25 2011-05-24 Computime, Ltd. Clock setup over a network
CN101183898B (en) * 2007-12-27 2011-05-25 中兴通讯股份有限公司 System, method and device for implementing synchronization of micromicro honeycomb base station
CN102202386B (en) * 2010-03-24 2014-05-07 华为技术有限公司 Clock synchronization method, device and system
CN101931400B (en) * 2010-08-31 2012-09-05 新邮通信设备有限公司 Method for locking clock of base station and device thereof
CN102932906B (en) * 2011-08-11 2017-11-03 中兴通讯股份有限公司 Global positioning system lockout failure judges and the synchronous method and device kept
CN104378194A (en) * 2014-11-26 2015-02-25 重庆金美通信有限责任公司 Optimization method for mutual synchronization algorithm
CN107508573B (en) * 2017-08-11 2020-11-10 北京瑞华高科技术有限责任公司 Crystal oscillator oscillation frequency correction method and device
CN108449126B (en) * 2018-02-08 2020-10-23 中国航天时代电子有限公司 Multi-satellite ground networking remote docking test system
CN114258126A (en) * 2020-09-25 2022-03-29 上海华为技术有限公司 Data processing method and device
CN114337890B (en) * 2021-11-25 2023-08-01 伟乐视讯科技股份有限公司 Multi-terminal broadcasting synchronization system and method based on PTP network synchronization

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6816510B1 (en) * 2000-02-09 2004-11-09 Koninklijke Philips Electronics N.V. Method for clock synchronization between nodes in a packet network
US7068746B1 (en) * 2000-03-01 2006-06-27 Lucent Technologies Inc. Base station transceiver to radio network controller synchronization filtering function
US7099354B2 (en) * 2002-01-24 2006-08-29 Radioframe Networks, Inc. Method and apparatus for frequency and timing distribution through a packet-based network

Also Published As

Publication number Publication date
CN1866814A (en) 2006-11-22
WO2006122499A1 (en) 2006-11-23
CN1866814B (en) 2011-02-02

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