CA2012361A1 - Transmission system with wideband virtual channel - Google Patents

Transmission system with wideband virtual channel

Info

Publication number
CA2012361A1
CA2012361A1 CA 2012361 CA2012361A CA2012361A1 CA 2012361 A1 CA2012361 A1 CA 2012361A1 CA 2012361 CA2012361 CA 2012361 CA 2012361 A CA2012361 A CA 2012361A CA 2012361 A1 CA2012361 A1 CA 2012361A1
Authority
CA
Canada
Prior art keywords
rate
channels
bit
data
signals
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
CA 2012361
Other languages
French (fr)
Other versions
CA2012361C (en
Inventor
David H.A. Black
Peter Musgrave
Sabino R. Ventola
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.)
Nokia Canada Inc
Original Assignee
Newbridge Networks Corp
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 Newbridge Networks Corp filed Critical Newbridge Networks Corp
Priority to CA 2012361 priority Critical patent/CA2012361C/en
Priority to PCT/CA1991/000079 priority patent/WO1991014319A1/en
Priority to EP91905469A priority patent/EP0519954B1/en
Priority to US07/949,233 priority patent/US5351239A/en
Priority to DE69113451T priority patent/DE69113451T2/en
Publication of CA2012361A1 publication Critical patent/CA2012361A1/en
Application granted granted Critical
Publication of CA2012361C publication Critical patent/CA2012361C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Time-Division Multiplex Systems (AREA)

Abstract

A method is described for transmitting signals having a bit-rate higher than the bit rate of the base rate channels in a digital data transmission system normally providing discrete base rate data channels. The method comprises allocating a group of n+1 predetermined bit-rate data channels as a virtual channel for the transmission of the high bit-rate signals. One of the n+1 channels is designated as an overhead channel arid the remaining n channels are designated as data channels. The high bit-rate signals are divided into n sub-signals having a bit-rate equal to or less than the predetermined bit-rate, and transmitted over the n data channels. Delay calibration signals are transmitted at intervals over the overhead and data channels, the delay calibration signals being transmitted in the data channels in slots normally allocated for data, said data slots being transmitted over said overhead channel while the calibration signals are transmitted in their place. At the far end the delay calibration signals are used to reassemble the n subsignals into the original high bit-rate data signal.
CA 2012361 1990-03-16 1990-03-16 Transmission system with wideband virtual channel Expired - Lifetime CA2012361C (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA 2012361 CA2012361C (en) 1990-03-16 1990-03-16 Transmission system with wideband virtual channel
PCT/CA1991/000079 WO1991014319A1 (en) 1990-03-16 1991-03-15 Digital data transmission system
EP91905469A EP0519954B1 (en) 1990-03-16 1991-03-15 Digital data transmission system
US07/949,233 US5351239A (en) 1990-03-16 1991-03-15 Digital data transmission system
DE69113451T DE69113451T2 (en) 1990-03-16 1991-03-15 DIGITAL DATA TRANSFER SYSTEM.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2012361 CA2012361C (en) 1990-03-16 1990-03-16 Transmission system with wideband virtual channel

Publications (2)

Publication Number Publication Date
CA2012361A1 true CA2012361A1 (en) 1991-09-16
CA2012361C CA2012361C (en) 2001-07-24

Family

ID=4144536

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2012361 Expired - Lifetime CA2012361C (en) 1990-03-16 1990-03-16 Transmission system with wideband virtual channel

Country Status (1)

Country Link
CA (1) CA2012361C (en)

Also Published As

Publication number Publication date
CA2012361C (en) 2001-07-24

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Legal Events

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