JP4224025B2 - 無線ネットワークにおいて低品質のクロックのクロックドリフトを補正し、同期を維持するためのシステムおよび方法 - Google Patents

無線ネットワークにおいて低品質のクロックのクロックドリフトを補正し、同期を維持するためのシステムおよび方法 Download PDF

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JP4224025B2
JP4224025B2 JP2004519816A JP2004519816A JP4224025B2 JP 4224025 B2 JP4224025 B2 JP 4224025B2 JP 2004519816 A JP2004519816 A JP 2004519816A JP 2004519816 A JP2004519816 A JP 2004519816A JP 4224025 B2 JP4224025 B2 JP 4224025B2
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clock
node
client
value
drift
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JP2005536919A (ja
JP2005536919A5 (US20040005902A1-20040108-P00001.png
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ベルセア、ジョン、エム．
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メシュネットワークス、インコーポレイテッド
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • 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
    • H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
    • H04J3/0667—Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • 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
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
JP2004519816A 2002-07-05 2003-07-03 無線ネットワークにおいて低品質のクロックのクロックドリフトを補正し、同期を維持するためのシステムおよび方法 Expired - Fee Related JP4224025B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/188,982 US7072432B2 (en) 2002-07-05 2002-07-05 System and method for correcting the clock drift and maintaining the synchronization of low quality clocks in wireless networks
PCT/US2003/020909 WO2004006493A1 (en) 2002-07-05 2003-07-03 A system and method for correcting the clock drift and maintaining the synchronization in wireless networks

Publications (3)

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JP2005536919A JP2005536919A (ja) 2005-12-02
JP2005536919A5 JP2005536919A5 (US20040005902A1-20040108-P00001.png) 2006-06-01
JP4224025B2 true JP4224025B2 (ja) 2009-02-12

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JP2004519816A Expired - Fee Related JP4224025B2 (ja) 2002-07-05 2003-07-03 無線ネットワークにおいて低品質のクロックのクロックドリフトを補正し、同期を維持するためのシステムおよび方法

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US (1) US7072432B2 (US20040005902A1-20040108-P00001.png)
EP (1) EP1520365B1 (US20040005902A1-20040108-P00001.png)
JP (1) JP4224025B2 (US20040005902A1-20040108-P00001.png)
KR (1) KR20050025582A (US20040005902A1-20040108-P00001.png)
AT (1) ATE441984T1 (US20040005902A1-20040108-P00001.png)
AU (1) AU2003281454A1 (US20040005902A1-20040108-P00001.png)
CA (1) CA2490258A1 (US20040005902A1-20040108-P00001.png)
DE (1) DE60329102D1 (US20040005902A1-20040108-P00001.png)
WO (1) WO2004006493A1 (US20040005902A1-20040108-P00001.png)

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EP1520365A4 (en) 2007-04-11
JP2005536919A (ja) 2005-12-02
WO2004006493A1 (en) 2004-01-15
DE60329102D1 (de) 2009-10-15
US7072432B2 (en) 2006-07-04
AU2003281454A1 (en) 2004-01-23
EP1520365B1 (en) 2009-09-02
KR20050025582A (ko) 2005-03-14
CA2490258A1 (en) 2004-01-15
US20040005902A1 (en) 2004-01-08
ATE441984T1 (de) 2009-09-15

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