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WO2002023939A1 - Dispositif et procede permettant de declencher la procedure d'initialisation dans des systemes de transmission de donnees a haut debit - Google Patents

Dispositif et procede permettant de declencher la procedure d'initialisation dans des systemes de transmission de donnees a haut debit Download PDF

Info

Publication number
WO2002023939A1
WO2002023939A1 PCT/DE2001/003074 DE0103074W WO0223939A1 WO 2002023939 A1 WO2002023939 A1 WO 2002023939A1 DE 0103074 W DE0103074 W DE 0103074W WO 0223939 A1 WO0223939 A1 WO 0223939A1
Authority
WO
WIPO (PCT)
Prior art keywords
data transmission
transmission device
subscriber
line module
telephone
Prior art date
Application number
PCT/DE2001/003074
Other languages
German (de)
English (en)
Inventor
Thomas Ahrndt
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2002023939A1 publication Critical patent/WO2002023939A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0435—Details
    • H04Q11/0471—Terminal access circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13039—Asymmetrical two-way transmission, e.g. ADSL, HDSL
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13093—Personal computer, PC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13109—Initializing, personal profile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1316—Service observation, testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13199—Modem, modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13389—LAN, internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13396—Signaling in general, in-band signalling

Definitions

  • the present invention relates to a line module for a switching center, a data transmission device for a personal computer and a method used in these devices for triggering an initialization procedure in a high bit rate data transmission system.
  • xDSL Digital Subscriber Line
  • ADSL asymmetry digital subscriber sine
  • the interface between the subscriber and the switching center or the telecommunications network is formed by the line module (also line card or SLMI, Subscriber Line Module Internet) in the switching center or a so-called xDSL modem (data transmission device) as a terminal (personal computer, PC) participant.
  • line module also line card or SLMI, Subscriber Line Module Internet
  • xDSL modem data transmission device
  • terminal personal computer, PC
  • CPE customer price equipment
  • the line modules described have an integrated voice / data chipset with which both a transmission of voice in the PCM system (Pulse Code Modulation) via a voice network and a transmission of data (for example in the frame relay, Ethernet or ATM) System) for packet-oriented data transmission over a data transmission network (eg Internet) with high data transmission rates is possible.
  • PCM Packet Control
  • data for example in the frame relay, Ethernet or ATM
  • connection establishment and data transmission in the xDSL process is e.g. in the standards G.992.1 and G.D t and
  • the standards G.994.1 and G.hs specify the handshake procedures when establishing a connection, e.g. Transmission parameters and methods of the respective connection are defined during an initialization procedure.
  • a so-called fast retrain procedure is defined, in which a quick initialization procedure between the subscriber's terminal (xDSL modem) and the
  • the fast initialization procedure can be triggered either by the line module or by the data transmission device (xDSL modem) of the subscriber, depending on the boundary conditions. For example, the data transmission from the exchange to the data transmission device by the data transmission device and the data transmission from the data transmission device to the exchange monitored by the line module and checked for errors. Above a certain bit error rate of the respective device (data transmission device or ⁇ pipe module) is a fast initialization procedure triggered; signaling messages which trigger the initiation procedure are generated by the corresponding device and sent to the respective other device.
  • the line properties can also change in a predictable manner, e.g. by picking up the phone's handset; when the telephone receiver is removed, the transmission properties for the high-bit-rate data transmission are negatively influenced in a predictable manner.
  • the object of the present invention is thus a line module according to claim 1, a data transmission device according to claim 6 and a
  • the present invention is based on the fact that the detection of the operating states of the telephone can be carried out much more reliably by a first sensor integrated in the line module in the exchange than by the second sensor of the data transmission device of the subscriber, however, when the initialization is triggered by the Line module of the sensor (second sensor) in the data transmission device can be bypassed, which also recognizes the operating conditions.
  • the initialization is triggered when the operating state of the subscriber's telephone changes, by the line module and not, as in the prior art, by the data processing device.
  • the operating state "handset on hook” and / or “handset off hook” (so-called on and / or off hook state) or a change in this operating state is recognized.
  • the first possibility is that all signaling messages sent from the data transmission device to the exchange for triggering an initialization procedure are ignored by the line module.
  • the advantage of this solution is that it is particularly easy to implement; the present invention must thereby be single ⁇ implemented Lich in the line module. Problems could arise, however, if the line characteristics (regardless of picking up the handset) for data transmission from the exchange to the subscriber (data downstream) change adversely; an initialization procedure then triggered by the data transmission device is also ignored by the line module.
  • the second possibility is that the line module sends a command in the form of signaling messages to the data transmission device of the subscriber, whereupon the sensor in the data transmission device (second sensor), which detects the operating state "handset off hook” or a change in this operating state, is deactivated.
  • the sensor in the data transmission device second sensor
  • the advantage of this solution is that specific requirements for initialization procedures that are triggered by this unreliable second sensor can be prevented.
  • the deactivation according to the invention of the second sensor in the data transmission device which detects the on / off hook state and accordingly triggers a short initialization procedure, is advantageously deactivated during an initialization procedure, which by definition is carried out when each connection is set up for high bit rate data transmission.
  • the command required for this (in the form of signaling messages) can be transmitted, for example, during the handshake procedure carried out in the initialization procedure in accordance with ITU standard G.994.1 (G.hs), in which basic transmission parameters are defined.
  • Another way of transmitting the command to deactivate the sensor is to use unused ones ⁇
  • This signaling message is transmitted after the handshake procedure and contains further features relating to data transmission.
  • the present invention is preferably applied to xDSL transmission systems such as e.g. ADSL and UDSL.
  • Fig. 1 shows the schematic structure for high bit rate data transmission between the terminals of a subscriber and the exchange
  • Fig. 2 shows the schematic structure of the invention
  • the exchange includes
  • Line modules 3a ... 3n for connecting the subscribers or their terminals (customer premises equipment, CPE) 1 to the exchange 2.
  • the line modules 3a ... 3n provide subscribers 1 with both conventional telephone services (POTS or ISDN) and also high bit rate data services
  • the participants 1 have various end devices, such as a telephone 4 and a personal computer 5 (PC) with an xDSL modem (data transmission device) for using the services offered; the data transmission device can be connected internally to the PC or externally to the PC.
  • the services offered are performed by subscriber 1 u> U) t) M P>
  • P- P- H P. p> PJ ⁇ Q P ⁇ P- DJ P ' ⁇ ⁇ * 1 ⁇ o P cn d et ri- 3 ⁇ ⁇ P- 0 ⁇ rt P cn ⁇ P ⁇ iQ IJ iJ tr N ⁇ ⁇ P. lJ ⁇ ⁇ St.
  • a first sensor 12 integrated in the line module 3 detects whether the handset of the telephone 4 is picked up (off-hook state). For this purpose, the second sensor 8 has to be bypassed so that a quick initialization procedure is not incorrectly carried out or not carried out.
  • either initiation of an initialization procedure by the data transmission device 7 is ignored by the initialization device 11, or the second sensor 8 is deactivated by the signaling messages generated by the signaling device 10.
  • the signaling messages sent by the data processing device 7 to trigger an initialization procedure has the advantage that the implementation is much easier; it only takes place in the line module 3.
  • the deactivation of the second sensor 8 according to the invention has the advantage that the initiation procedure is not fundamentally prevented by the data transmission device 7. changes to the line properties continue to be reacted to.
  • this embodiment of the invention requires an implementation both in the data transmission device 7 and in the line module 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)

Abstract

Module (3) de lignes pour un central téléphonique (2) destiné à la connexion de lignes d'abonnés comportant chacune un dispositif de transmission (7) de données pour la transmission de données à haut débit, et / ou un téléphone (4). Selon la présente invention, lorsque le combiné du téléphone (4) est décroché, cet état est reconnu par un premier capteur (12) du module (3) de lignes et une procédure d'initialisation est engagée. La présente invention concerne en outre un dispositif de transmission (7) de données pour ce module (3) de lignes et un procédé utilisé dans ces dispositifs pour déclencher une procédure d'initialisation.
PCT/DE2001/003074 2000-09-15 2001-08-10 Dispositif et procede permettant de declencher la procedure d'initialisation dans des systemes de transmission de donnees a haut debit WO2002023939A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000145775 DE10045775A1 (de) 2000-09-15 2000-09-15 Vorrichtung und Verfahren zum Auslösen der Initialisierungsprozedur bei hochbitratigen Datenübertragungssystemen
DE10045775.4 2000-09-15

Publications (1)

Publication Number Publication Date
WO2002023939A1 true WO2002023939A1 (fr) 2002-03-21

Family

ID=7656391

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/003074 WO2002023939A1 (fr) 2000-09-15 2001-08-10 Dispositif et procede permettant de declencher la procedure d'initialisation dans des systemes de transmission de donnees a haut debit

Country Status (3)

Country Link
DE (1) DE10045775A1 (fr)
TW (1) TW529287B (fr)
WO (1) WO2002023939A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999029096A1 (fr) * 1997-12-02 1999-06-10 Conexant Systems, Inc. Commutation par modulation destinee a la transmission de signaux dans dsl (boucle d'abonnes numerique)
WO1999067891A1 (fr) * 1998-06-23 1999-12-29 3Com Corporation Mecanisme d'echappement d'une sequence de re-apprentissage rapide de modem numerique
EP1011250A1 (fr) * 1998-12-18 2000-06-21 Lucent Technologies Inc. Système et Méthode pour l'allocation de tension de overhead dans la transmission des signaux de type POTS et xDSL

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999029096A1 (fr) * 1997-12-02 1999-06-10 Conexant Systems, Inc. Commutation par modulation destinee a la transmission de signaux dans dsl (boucle d'abonnes numerique)
WO1999067891A1 (fr) * 1998-06-23 1999-12-29 3Com Corporation Mecanisme d'echappement d'une sequence de re-apprentissage rapide de modem numerique
EP1011250A1 (fr) * 1998-12-18 2000-06-21 Lucent Technologies Inc. Système et Méthode pour l'allocation de tension de overhead dans la transmission des signaux de type POTS et xDSL

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JOHANSSON A: "ADSL LITE - THE BROADBAND ENABLER FOR THE MASS MARKET", ERICSSON REVIEW, no. 4, 22 December 1998 (1998-12-22), STOCKHOLM, SE, pages 154 - 161, XP000792054, ISSN: 0014-0171 *

Also Published As

Publication number Publication date
TW529287B (en) 2003-04-21
DE10045775A1 (de) 2002-04-11

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