CA2254591A1 - Method of and apparatus for multiplexing and demultiplexing digital signal streams - Google Patents

Method of and apparatus for multiplexing and demultiplexing digital signal streams

Info

Publication number
CA2254591A1
CA2254591A1 CA002254591A CA2254591A CA2254591A1 CA 2254591 A1 CA2254591 A1 CA 2254591A1 CA 002254591 A CA002254591 A CA 002254591A CA 2254591 A CA2254591 A CA 2254591A CA 2254591 A1 CA2254591 A1 CA 2254591A1
Authority
CA
Canada
Prior art keywords
signal streams
digital signal
multiplexing
rate
srts
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.)
Granted
Application number
CA002254591A
Other languages
French (fr)
Other versions
CA2254591C (en
Inventor
Peter Dane Bird
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.)
Ciena Luxembourg SARL
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of CA2254591A1 publication Critical patent/CA2254591A1/en
Application granted granted Critical
Publication of CA2254591C publication Critical patent/CA2254591C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1605—Fixed allocated frame structures
    • H04J3/1623—Plesiochronous digital hierarchy [PDH]
    • H04J3/1641—Hierarchical systems
    • 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
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/07—Synchronising arrangements using pulse stuffing for systems with different or fluctuating information rates or bit rates
    • H04J3/073—Bit stuffing, e.g. PDH

Abstract

- Multiplexing and demultiplexing are commonplace for an efficient bandwidth utilization in telecommunications. SRTS
(Synchronous Residual Time Stamp) technique is widely used for timing recovery in processing of digital signal streams. The bit stuffing is also prevalent for various purposes, one being rate adjustment. The invention performs the SRTS technique entirely digitally to monitor the rate of slower speed signal streams in relation to the rate of a higher speed stream. The digital implementation permits the use of context switching for processing a plurality of digital signal streams. As the result, hardware requirement is greatly reduced.
CA002254591A 1997-12-19 1998-11-26 Method of and apparatus for multiplexing and demultiplexing digital signal streams Expired - Lifetime CA2254591C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/995,414 1997-12-19
US08/995,414 US6157659A (en) 1997-12-19 1997-12-19 Method of and apparatus for multiplexing and demultiplexing digital signal streams

Publications (2)

Publication Number Publication Date
CA2254591A1 true CA2254591A1 (en) 1999-06-19
CA2254591C CA2254591C (en) 2002-06-04

Family

ID=25541755

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002254591A Expired - Lifetime CA2254591C (en) 1997-12-19 1998-11-26 Method of and apparatus for multiplexing and demultiplexing digital signal streams

Country Status (6)

Country Link
US (1) US6157659A (en)
EP (2) EP0926851B1 (en)
JP (1) JP3330888B2 (en)
KR (1) KR19990063234A (en)
CA (1) CA2254591C (en)
DE (2) DE69836157T2 (en)

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US7346698B2 (en) * 2000-12-20 2008-03-18 G. W. Hannaway & Associates Webcasting method and system for time-based synchronization of multiple, independent media streams
US20020163930A1 (en) * 2001-02-28 2002-11-07 Phillip Kreider Methods and systems for interleaving data from multi-rate channels into a single interface
WO2003019873A1 (en) * 2001-08-22 2003-03-06 Tekelec Methods and systems for improving utilization of high-speed time division multiplexed communications links at signal transfer point
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US7184728B2 (en) 2002-02-25 2007-02-27 Adc Telecommunications, Inc. Distributed automatic gain control system
US7308004B1 (en) 2002-03-06 2007-12-11 Redback Networks, Inc. Method and apparatus of multiplexing and demultiplexing communication signals
US6831901B2 (en) * 2002-05-31 2004-12-14 Opencell Corporation System and method for retransmission of data
US8958789B2 (en) 2002-12-03 2015-02-17 Adc Telecommunications, Inc. Distributed digital antenna system
EP1455472A1 (en) * 2003-03-07 2004-09-08 STMicroelectronics Limited Timing control for packet streams
US20050036522A1 (en) * 2003-08-15 2005-02-17 Adc Dsl Systems, Inc. Multiplexers in a synchronous optical network
US7031256B2 (en) * 2004-01-20 2006-04-18 Transwitch Corporation Methods and apparatus for implementing LCAS ( link capacity adjustment scheme) sinking with rate based flow control
US7787854B2 (en) * 2005-02-01 2010-08-31 Adc Telecommunications, Inc. Scalable distributed radio network
US7484160B2 (en) * 2005-03-04 2009-01-27 Tellabs Operations, Inc. Systems and methods for delineating a cell in a communications network
US20070008939A1 (en) * 2005-06-10 2007-01-11 Adc Telecommunications, Inc. Providing wireless coverage into substantially closed environments
US9544638B2 (en) * 2006-04-17 2017-01-10 Broadcom Corporation Method for reconstructing system time clock (STC) without carrying PCR
US7805073B2 (en) 2006-04-28 2010-09-28 Adc Telecommunications, Inc. Systems and methods of optical path protection for distributed antenna systems
US7844273B2 (en) * 2006-07-14 2010-11-30 Lgc Wireless, Inc. System for and method of for providing dedicated capacity in a cellular network
US7848770B2 (en) 2006-08-29 2010-12-07 Lgc Wireless, Inc. Distributed antenna communications system and methods of implementing thereof
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US7817958B2 (en) 2006-12-22 2010-10-19 Lgc Wireless Inc. System for and method of providing remote coverage area for wireless communications
US8737454B2 (en) 2007-01-25 2014-05-27 Adc Telecommunications, Inc. Modular wireless communications platform
US8583100B2 (en) 2007-01-25 2013-11-12 Adc Telecommunications, Inc. Distributed remote base station system
US8005050B2 (en) 2007-03-23 2011-08-23 Lgc Wireless, Inc. Localization of a mobile device in distributed antenna communications system
US20080236393A1 (en) * 2007-03-28 2008-10-02 Adc Dsl Systems, Inc. Filter assembly
US20080240090A1 (en) * 2007-03-28 2008-10-02 Adc Dsl Systems, Inc. Programmable high speed crossbar switch
US8010116B2 (en) 2007-06-26 2011-08-30 Lgc Wireless, Inc. Distributed antenna communications system
US9112547B2 (en) 2007-08-31 2015-08-18 Adc Telecommunications, Inc. System for and method of configuring distributed antenna communications system
US8310963B2 (en) * 2008-06-24 2012-11-13 Adc Telecommunications, Inc. System and method for synchronized time-division duplex signal switching
US9001811B2 (en) 2009-05-19 2015-04-07 Adc Telecommunications, Inc. Method of inserting CDMA beacon pilots in output of distributed remote antenna nodes
US8472579B2 (en) 2010-07-28 2013-06-25 Adc Telecommunications, Inc. Distributed digital reference clock
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US8532242B2 (en) 2010-10-27 2013-09-10 Adc Telecommunications, Inc. Distributed antenna system with combination of both all digital transport and hybrid digital/analog transport
US8462683B2 (en) 2011-01-12 2013-06-11 Adc Telecommunications, Inc. Distinct transport path for MIMO transmissions in distributed antenna systems
US8693342B2 (en) 2011-10-28 2014-04-08 Adc Telecommunications, Inc. Distributed antenna system using time division duplexing scheme
RU2514092C2 (en) * 2012-03-30 2014-04-27 Федеральное государственное унитарное предприятие "Ростовский-на-Дону научно-исследовательский институт радиосвязи" (ФГУП "РНИИРС") Method and apparatus for synchronising and demultiplexing component signals in digital streams
EP3484060B1 (en) 2013-02-22 2021-04-07 ADC Telecommunications, Inc. Master reference for base station network interface sourced from distributed antenna system
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US9787457B2 (en) 2013-10-07 2017-10-10 Commscope Technologies Llc Systems and methods for integrating asynchronous signals in distributed antenna system with direct digital interface to base station
WO2015126828A1 (en) 2014-02-18 2015-08-27 Commscope Technologiees Llc Selectively combining uplink signals in distributed antenna systems
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US10499269B2 (en) 2015-11-12 2019-12-03 Commscope Technologies Llc Systems and methods for assigning controlled nodes to channel interfaces of a controller

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Also Published As

Publication number Publication date
JPH11252034A (en) 1999-09-17
DE69836157D1 (en) 2006-11-23
DE69836157T2 (en) 2007-01-18
EP0926851A3 (en) 2003-04-02
DE69831473T2 (en) 2006-02-02
JP3330888B2 (en) 2002-09-30
EP0926851B1 (en) 2005-09-07
US6157659A (en) 2000-12-05
CA2254591C (en) 2002-06-04
EP1585243A1 (en) 2005-10-12
DE69831473D1 (en) 2005-10-13
KR19990063234A (en) 1999-07-26
EP0926851A2 (en) 1999-06-30
EP1585243B1 (en) 2006-10-11

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Effective date: 20181126