DK0787389T3 - Reconciliation method for point-to-multipoint communication systems - Google Patents

Reconciliation method for point-to-multipoint communication systems

Info

Publication number
DK0787389T3
DK0787389T3 DK95935953T DK95935953T DK0787389T3 DK 0787389 T3 DK0787389 T3 DK 0787389T3 DK 95935953 T DK95935953 T DK 95935953T DK 95935953 T DK95935953 T DK 95935953T DK 0787389 T3 DK0787389 T3 DK 0787389T3
Authority
DK
Denmark
Prior art keywords
olt
central station
onu
terminal
ranging
Prior art date
Application number
DK95935953T
Other languages
Danish (da)
Inventor
Torsten Musiol
Torsten Velker
Jens Lunau
Original Assignee
Nokia Telecommunications Oy
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 Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Application granted granted Critical
Publication of DK0787389T3 publication Critical patent/DK0787389T3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/043—Pseudo-noise [PN] codes variable during transmission
    • 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
    • H04J3/0682—Clock or time synchronisation in a network by delay compensation, e.g. by compensation of propagation delay or variations thereof, by ranging

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Small-Scale Networks (AREA)
  • Optical Communication System (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

A ranging process is disclosed for point-to-multipoint communication systems having a central station (OLT) and several terminals (ONU) connected to the central station (OLT) by a network, in particular a passive optical network. Each terminal sends a pseudo-noise sequence (ONU-PNS-TX) on a carrier outside the data transmission band, the pseudo-noise sequence is received with a delay (ONU-PNS-RX) by the central station (OLT) and is correlated with a pseudo-noise sequence (OLT-PNS) identically generated in the central station (OLT). The two-way delay to the terminal (ONU) is determined from the extreme value of the correlation function and the required delay between the burst received by the terminal and the burst sent by the terminal is derived from the two-way delay. In order to create a communication system in which the terminals have a as simple as possible ranging hardware, the ranging sequence is a binary sequence whose autocorrelation function has an extreme value at the zero point. The relative phase position between the received ranging sequence (ONU-PNS-RX) and a clock signal (OLT-CLK-SEQ) derived from the data rate (OLT-CLK-DATA) is at first determined at the central station (OLT) and the ranging sequences of the terminal and central station are then correlated in phase.
DK95935953T 1994-10-27 1995-10-20 Reconciliation method for point-to-multipoint communication systems DK0787389T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4438344A DE4438344C1 (en) 1994-10-27 1994-10-27 Voting procedure for point-to-multipoint communication systems
PCT/EP1995/004118 WO1996013915A1 (en) 1994-10-27 1995-10-20 Ranging process for point-to-multipoint communication systems

Publications (1)

Publication Number Publication Date
DK0787389T3 true DK0787389T3 (en) 1999-06-07

Family

ID=6531804

Family Applications (1)

Application Number Title Priority Date Filing Date
DK95935953T DK0787389T3 (en) 1994-10-27 1995-10-20 Reconciliation method for point-to-multipoint communication systems

Country Status (8)

Country Link
EP (1) EP0787389B1 (en)
JP (1) JPH10508443A (en)
AT (1) ATE170684T1 (en)
AU (1) AU3806195A (en)
DE (1) DE4438344C1 (en)
DK (1) DK0787389T3 (en)
ES (1) ES2123291T3 (en)
WO (1) WO1996013915A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10147164B4 (en) * 2001-09-25 2004-05-06 Siemens Ag Method for determining the delay time of a connection with transmission over a packet-based network
JP3936721B2 (en) 2005-07-29 2007-06-27 株式会社日立コミュニケーションテクノロジー Optical access system, optical subscriber unit and optical concentrator
JP4872377B2 (en) 2006-02-22 2012-02-08 沖電気工業株式会社 Ranging method for communication system between central station and multiple terminals
EP2472753B1 (en) * 2011-01-04 2013-06-12 Alcatel Lucent Method of delay measurement in an optical network

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657480B1 (en) * 1990-01-22 1992-04-10 Alcatel Business Systems BYTE TRANSMISSION METHOD USING A SYNCHRONOUS FRAME ASSOCIATING ASYNCHRONOUS CELLS WITH ISOCHRONOUS CHANNELS.
EP0521197B1 (en) * 1991-06-04 1999-01-07 Alcatel Method for determining equalization delays in a transmission system and related transmission system
GB2272610B (en) * 1992-11-12 1996-10-09 Northern Telecom Ltd Telecommunications systems
EP0616443A3 (en) * 1993-03-15 1994-10-26 Koninkl Philips Electronics Nv Telecommunication system with ranging.
EP0616444A3 (en) * 1993-03-15 1994-10-19 Koninkl Philips Electronics Nv Telecommunication system with ranging.

Also Published As

Publication number Publication date
ATE170684T1 (en) 1998-09-15
WO1996013915A1 (en) 1996-05-09
JPH10508443A (en) 1998-08-18
EP0787389A1 (en) 1997-08-06
ES2123291T3 (en) 1999-01-01
AU3806195A (en) 1996-05-23
DE4438344C1 (en) 1996-08-01
EP0787389B1 (en) 1998-09-02

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