MX2016014037A - Metodo y aparato para determinar el retardo de propagacion en una red de comunicaciones. - Google Patents

Metodo y aparato para determinar el retardo de propagacion en una red de comunicaciones.

Info

Publication number
MX2016014037A
MX2016014037A MX2016014037A MX2016014037A MX2016014037A MX 2016014037 A MX2016014037 A MX 2016014037A MX 2016014037 A MX2016014037 A MX 2016014037A MX 2016014037 A MX2016014037 A MX 2016014037A MX 2016014037 A MX2016014037 A MX 2016014037A
Authority
MX
Mexico
Prior art keywords
transceiver unit
path
signal
time reference
time
Prior art date
Application number
MX2016014037A
Other languages
English (en)
Inventor
Ruffini Stefano
STRACCA Stefano
Cavaliere Fabio
Original Assignee
ERICSSON TELEFON AB L M (publ)
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 ERICSSON TELEFON AB L M (publ) filed Critical ERICSSON TELEFON AB L M (publ)
Publication of MX2016014037A publication Critical patent/MX2016014037A/es

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
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0658—Clock or time synchronisation among packet nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/073—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an out-of-service signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
    • H04B10/25752—Optical arrangements for wireless networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
    • H04B10/25752—Optical arrangements for wireless networks
    • H04B10/25753—Distribution optical network, e.g. between a base station and a plurality of remote units
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
    • H04B10/25752—Optical arrangements for wireless networks
    • H04B10/25758—Optical arrangements for wireless networks between a central unit and a single remote unit by means of an optical fibre
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/212—Time-division multiple access [TDMA]
    • H04B7/2125—Synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation
    • H04B7/2678—Time 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
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0644—External master-clock
    • 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
    • H04J3/0647—Synchronisation among TDM nodes
    • 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
    • H04J3/0647—Synchronisation among TDM nodes
    • H04J3/065—Synchronisation among TDM nodes using timestamps
    • 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
    • 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
    • H04J3/0676—Mutual
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0852—Delays
    • H04L43/0858—One way delays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0852—Delays
    • H04L43/0864—Round trip delays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
    • H04L43/106—Active monitoring, e.g. heartbeat, ping or trace-route using time related information in packets, e.g. by adding timestamps
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2215/00—Reducing interference at the transmission system level
    • H04B2215/064—Reduction of clock or synthesizer reference frequency harmonics
    • H04B2215/065—Reduction of clock or synthesizer reference frequency harmonics by changing the frequency of clock or reference frequency

Abstract

Un método y un aparato para determinar el retardo de propagación de una primera ruta y/o de una segunda ruta que conecta una primera unidad de transceptor asociada con un primer reloj con una segunda unidad de transceptor asociada con un segundo reloj en una red de comunicaciones. El aparato comprende una unidad de control configurada para provocar que la primera unidad de transceptor transmita una primera señal a la segunda unidad de transceptor sobre la primera ruta y reciba una respuesta a la primera señal de la segunda unidad de transceptor sobre la segunda ruta, y transmita una segunda señal a la segunda unidad de transceptor sobre la segunda ruta y reciba una respuesta de la segunda señal a la segunda unidad de transceptor sobre la primera ruta. El aparato comprende además una unidad de recepción configurada para recibir una primera referencia de tiempo que representa el tiempo de transmisión de la primera señal de la primera unidad de transceptor, una segunda referencia de tiempo que representa el tiempo de recepción de la primera señal en la segunda unidad de transceptor, una tercera referencia de tiempo que representa el momento de la transmisión de la respuesta de la segunda señal a la segunda unidad de transceptor y una cuarta referencia de tiempo que representa el momento de la recepción de la respuesta a la segunda señal en la primera unidad de transceptor. El aparato comprende además una unidad de determinación configurada para determinar un retardo de propagación de la primera ruta y/o de la segunda ruta con la primera referencia de tiempo, la segunda referencia de tiempo, la tercera referencia de tiempo y la cuarta referencia de tiempo.
MX2016014037A 2014-05-08 2014-05-08 Metodo y aparato para determinar el retardo de propagacion en una red de comunicaciones. MX2016014037A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/059417 WO2015169363A1 (en) 2014-05-08 2014-05-08 Method and apparatus for determining propagation delay in a communications network

Publications (1)

Publication Number Publication Date
MX2016014037A true MX2016014037A (es) 2017-02-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
MX2016014037A MX2016014037A (es) 2014-05-08 2014-05-08 Metodo y aparato para determinar el retardo de propagacion en una red de comunicaciones.

Country Status (5)

Country Link
US (2) US9948419B2 (es)
EP (1) EP3140957A1 (es)
KR (1) KR20160143773A (es)
MX (1) MX2016014037A (es)
WO (1) WO2015169363A1 (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160143773A (ko) * 2014-05-08 2016-12-14 텔레호낙티에볼라게트 엘엠 에릭슨(피유비엘) 통신 네트워크에서 전파 지연을 결정하기 위한 방법 및 장치
US9872189B2 (en) * 2016-03-31 2018-01-16 Corning Optical Communications Wireless Ltd Systems and methods for determining asymmetric downlink and uplink propagation delays in a wireless distribution system (WDS) for more accurately determining propagation delay
US10191345B2 (en) * 2016-11-01 2019-01-29 Innolux Corporation Display device
IT201700006409A1 (it) * 2017-01-20 2018-07-20 Teko Telecom S R L Apparecchiatura radio con architettura ridondante automatica
CN108989105B (zh) * 2018-07-16 2021-09-07 创新先进技术有限公司 传播路径图生成方法、装置及服务器
EP3963898A1 (en) 2019-04-29 2022-03-09 Telefonaktiebolaget LM Ericsson (publ) Method and apparatus for controlling transmission of an upstream packet traffic in a tdm pon-based fronthaul
US11425013B2 (en) * 2019-10-17 2022-08-23 Ii-Vi Delaware, Inc. Optical link time-of-flight and traffic latency determination using optical transceiver
US11431425B2 (en) 2020-09-24 2022-08-30 Corning Research & Development Corporation Measuring an end-to-end delay(s) in a distributed communications system
WO2023192190A1 (en) * 2022-03-30 2023-10-05 Commscope Technologies Llc Systems and methods for geolocation of user equipment

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6243369B1 (en) * 1998-05-06 2001-06-05 Terayon Communication Systems, Inc. Apparatus and method for synchronizing an SCDMA upstream or any other type upstream to an MCNS downstream or any other type downstream with a different clock rate than the upstream
US7505688B2 (en) * 2002-06-04 2009-03-17 Finisar Corporation Optical transceiver
US7072432B2 (en) * 2002-07-05 2006-07-04 Meshnetworks, Inc. System and method for correcting the clock drift and maintaining the synchronization of low quality clocks in wireless networks
US9337948B2 (en) * 2003-06-10 2016-05-10 Alexander I. Soto System and method for performing high-speed communications over fiber optical networks
US7602873B2 (en) * 2005-12-23 2009-10-13 Agilent Technologies, Inc. Correcting time synchronization inaccuracy caused by asymmetric delay on a communication link
US8208815B1 (en) * 2006-11-30 2012-06-26 Marvell International Ltd. Bit accurate upstream burst transmission phase method for reducing burst data arrival variation
US8873947B2 (en) * 2007-09-05 2014-10-28 Alcatel Lucent Method and apparatus for determining fiber characteristics in an optical communication network
KR20090032306A (ko) * 2007-09-27 2009-04-01 한국전자통신연구원 네트워크상의 타임 동기화 시스템 및 방법
US8045858B2 (en) * 2008-07-24 2011-10-25 The Boeing Company Methods and systems for providing full avionics data services over a single fiber
WO2010088788A1 (en) * 2009-02-09 2010-08-12 Abb Research Ltd Method for detecting network asymmetrical status and asymmetrical communication channels for power system
WO2012048975A1 (en) 2010-10-13 2012-04-19 Telefonaktiebolaget L M Ericsson (Publ) Determining asymmetries in a communication network
US8576778B2 (en) * 2011-01-27 2013-11-05 Telefonaktiebolaget L M Ericsson (Publ) Transfer of synchronization in a hybrid global satellite packet network system
US8600239B2 (en) * 2011-09-26 2013-12-03 Symmetricom Precise clock synchronization over optical fiber
US8738042B2 (en) * 2011-10-12 2014-05-27 Qualcomm Incorporated Methods, systems, and devices for determining a closest base station to a multi-mode mobile device
US8599827B2 (en) * 2011-10-21 2013-12-03 Telefonaktiebolaget Lm Ericsson (Publ) Methods and apparatuses for maintaining synchronization between a radio equipment controller and an item of radio equipment
WO2013170910A1 (en) * 2012-05-16 2013-11-21 Telefonaktiebolaget L M Ericsson (Publ) Determining properties of an optical communications path in an optical communications network
US8842994B2 (en) * 2012-05-24 2014-09-23 Telefonaktiebolaget L M Ericsson (Publ) Distributing clock synchronization information within an optical communications network
US9628259B2 (en) * 2012-05-24 2017-04-18 Telefonaktiebolaget L M Ericsson (Publ) Distributing clock synchronization information within an optical communications network
WO2014075725A1 (en) * 2012-11-15 2014-05-22 Telefonaktiebolaget L M Ericsson (Publ) Method and arrangement for monitoring optical transmission lines
US20140348182A1 (en) * 2013-05-22 2014-11-27 Iii Holdings 2, Llc Time synchronization between nodes of a switched interconnect fabric
KR20160143773A (ko) * 2014-05-08 2016-12-14 텔레호낙티에볼라게트 엘엠 에릭슨(피유비엘) 통신 네트워크에서 전파 지연을 결정하기 위한 방법 및 장치
US9166881B1 (en) * 2014-12-31 2015-10-20 Contact Solutions LLC Methods and apparatus for adaptive bandwidth-based communication management
US9929855B2 (en) * 2015-10-02 2018-03-27 Telefonaktiebolaget Lm Ericsson (Publ) Synchronizing clocks in a communications network

Also Published As

Publication number Publication date
WO2015169363A1 (en) 2015-11-12
US9948419B2 (en) 2018-04-17
EP3140957A1 (en) 2017-03-15
US20170180070A1 (en) 2017-06-22
US20180205478A1 (en) 2018-07-19
KR20160143773A (ko) 2016-12-14
US10404392B2 (en) 2019-09-03

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