[go: up one dir, main page]

WO2001052465A1 - Procede de selection de profils fast-retrain existants - Google Patents

Procede de selection de profils fast-retrain existants Download PDF

Info

Publication number
WO2001052465A1
WO2001052465A1 PCT/DE2001/000023 DE0100023W WO0152465A1 WO 2001052465 A1 WO2001052465 A1 WO 2001052465A1 DE 0100023 W DE0100023 W DE 0100023W WO 0152465 A1 WO0152465 A1 WO 0152465A1
Authority
WO
WIPO (PCT)
Prior art keywords
data transmission
line properties
line
event
rate
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.)
Ceased
Application number
PCT/DE2001/000023
Other languages
German (de)
English (en)
Inventor
Thomas Ahrndt
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens 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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to DE10190106T priority Critical patent/DE10190106D2/de
Publication of WO2001052465A1 publication Critical patent/WO2001052465A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/26—Flow control; Congestion control using explicit feedback to the source, e.g. choke packets
    • H04L47/263—Rate modification at the source after receiving feedback

Definitions

  • the present invention relates to a method for adapting the data transmission rate of a data transmission between a subscriber and a switching center and a device for carrying out this method.
  • Modern exchanges in the digital electronic dialing system are already able to provide the subscriber with high-bit-rate data services in the xDSL (x Digital Subscriber Line) process in addition to the analog or digital telephone services in the POTS (Piain Old Telephone Service) or ISDN system To make available.
  • xDSL x Digital Subscriber Line
  • POTS Peain Old Telephone Service
  • ISDN ISDN System
  • a data transmission rate of up to 8 Mbit / s and up to 640 kbit / s from the subscriber to the exchange is possible in the ADSL (asymmetry digital subscriber line) process from the exchange to the subscriber.
  • the interface between the subscriber and the exchange or the transmission network is the line module (also line card or SLMI, Subscriber Line Module Internet), which is located in the exchange.
  • the line module also line card or SLMI, Subscriber Line Module Internet
  • Several subscribers e.g. eight subscribers
  • end devices e.g. analogue telephone and computer
  • these line modules have a PCM interface (Pulse Code Modulation) for the transmission of
  • these line modules also have an interface (such as in the frame relay, Ethernet or ATM system) for packet-oriented data transmission in a data transmission network with high data transmission rates.
  • the data transfer rate according to the present invention can be automatically adapted to the changed line characteristics.
  • the lmk down times, i.e. the times when no data transmission is possible due to the implementation of a fast retram are thus reduced.
  • the line properties change e.g. when there is an incoming telephone call from another subscriber. Due to the AC voltage (with values up to 150V peak-to-peak), which is generated during the ringing phase (Rmg-ON and Ring-OFF alternately), the line properties are influenced in such a way that the maximum possible data transfer rate drops.
  • a new initialization phase i.e. a fast retram is provided.
  • this event which results in a predictable change in line characteristics, is predictable and the data transfer rate is reduced accordingly.
  • a data transfer rate is selected that is valid for both the Rmg-ON state and the Ring-OFF state.
  • This data transmission rate can now be maintained for the entire remaining duration of the data transmission, or the data transmission can be increased again automatically after the event has ended. Since the data transmission rates on a line differ in different frequency ranges, the course of the data transmission rate over the frequency range is stored in so-called profiles. According to the present inventions d ü ng of the line characteristics is selected for data transmission, a profile thus at a predictable change which comes the corresponding conduction properties closest.
  • the present invention is preferably used in data transmission systems which use the xDSL method, i.e. e.g. work according to the ADSL or UDSL procedure.
  • FIG. 1 shows the schematic structure of a switching center with the subscribers connected to it.
  • FIG. 2a shows the division of the frequency spectrum in ADSL data transmission.
  • FIG. 2b shows an example of a profile for the data transmission parameters, and
  • the switching center (Central Office, CO) 2 includes, among other things, the line modules 3a, ..., 3n for connecting the subscribers or their terminals (Customer Premises Equipment, CPE) la, ..., In to the exchange 2.
  • These line modules 3a, ..., 3n provide the subscribers la, ..., In both conventional telephone services (POTS or ISDN) and high-bit-rate data services (such as ADSL, UDSL ).
  • the participants la, ..., In are different end devices, such as a telephone 11a, ..., lln and a computer with an xDSL modem 12a, ..., 12n for using the services offered available.
  • the services offered are divided at the subscriber la, ..., In by a splitter 13a, ..., 13n between the respective end devices.
  • the services offered are divided by the line card 3a,..., 3n onto the respective transmission networks.
  • the xDSL data transmission is described below using the frequency spectrum of the ADSL system, as shown in FIG. 2a.
  • the frequency band is divided as follows: The transmission of the telephone services (analog or digital) takes place in the range up to 30 kHz. The frequency range from 30 kHz to 138 kHz is used for data transmission from the subscriber to the exchange (data upstream) and the range from 138 kHz to 1.1 MHz for data transmission from the exchange to the subscriber (data downstream).
  • the data transmission is again divided into individual sections, the so-called Bms, over the frequency range.
  • Each bin occupies a specific frequency range with a bandwidth of 4.3125 kHz, with each bin transmitting data in quadrature amplitude modulation (QAM) with an adjustable bit rate.
  • QAM quadrature amplitude modulation
  • the total data transfer rate results from the sum of the data transfer rates of the individual Bms.
  • the maximum transmission capacity of a transmission channel results, apart from the electrical parameters, from the signal / noise ratio. This means that the lower the signal-to-noise ratio, the smaller the transmission capacity.
  • the device according to the invention for carrying out the method according to the invention is implemented on the line card 3, which is located in the switching center.
  • the line card 3 determines the line properties with regard to the maximum possible data transmission rate by measuring the transmission line between the switching center and the subscriber.
  • a corresponding profile that comes closest to the measured line properties is selected and set.
  • a large number of possible profiles are stored in the memory device 33.
  • the data transmission rate is automatically adapted by the means 31 to the line properties which change due to the ringing phase of the incoming call.
  • a profile stored in the memory device 33 is selected that comes closest to the measured line properties.
  • the means 32 determines the end of the specific event, i.e. H. the end of the ringing phase.
  • the ring phase is e.g. B. then to an end when the called subscriber answers or when the calling subscriber hangs up without a conversation.
  • the currently set profile can be retained or the previous profile can be set again.

Landscapes

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

Abstract

L'invention concerne un procédé pour adapter le débit de transmission des données d'une transmission de données entre un abonné (1a...1n) et un central téléphonique (2) à des modifications apparaissant temporairement quant aux propriétés de la ligne pendant la durée de la transmission des données, les propriétés de la ligne étant déterminées lors de l'établissement de la communication et le débit de transmission des données étant adapté aux propriétés de la ligne ainsi déterminées. La présente invention concerne également un dispositif pour réaliser ledit procédé.
PCT/DE2001/000023 2000-01-13 2001-01-05 Procede de selection de profils fast-retrain existants Ceased WO2001052465A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10190106T DE10190106D2 (de) 2000-01-13 2001-01-05 Verfahren zur Auswahl bestehender Fast-Retrain-Profile

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10001152A DE10001152A1 (de) 2000-01-13 2000-01-13 Verfahren zur Auswahl bestehender Fast-Retrain-Profile
DE10001152.7 2000-01-13

Publications (1)

Publication Number Publication Date
WO2001052465A1 true WO2001052465A1 (fr) 2001-07-19

Family

ID=7627393

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/000023 Ceased WO2001052465A1 (fr) 2000-01-13 2001-01-05 Procede de selection de profils fast-retrain existants

Country Status (2)

Country Link
DE (2) DE10001152A1 (fr)
WO (1) WO2001052465A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0653873A1 (fr) * 1993-11-15 1995-05-17 AT&T Corp. Changement de débit de données activé par la parole dans une transmission simultanée de parole et de données
WO1998027665A1 (fr) * 1996-12-17 1998-06-25 Paradyne Corporation Appareil et procede de transmission de la parole et de donnees entre des installations d'abonnes et un central
WO1999012330A1 (fr) * 1997-08-28 1999-03-11 Travertine Systems, Inc. Systeme reseau de region locale et procede correspondant

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0653873A1 (fr) * 1993-11-15 1995-05-17 AT&T Corp. Changement de débit de données activé par la parole dans une transmission simultanée de parole et de données
WO1998027665A1 (fr) * 1996-12-17 1998-06-25 Paradyne Corporation Appareil et procede de transmission de la parole et de donnees entre des installations d'abonnes et un central
WO1999012330A1 (fr) * 1997-08-28 1999-03-11 Travertine Systems, Inc. Systeme reseau de region locale et procede correspondant

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,SE,ERICSSON. STOCKHOLM, no. 4, 22 December 1998 (1998-12-22), pages 154 - 161, XP000792054, ISSN: 0014-0171 *

Also Published As

Publication number Publication date
DE10190106D2 (de) 2003-07-31
DE10001152A1 (de) 2001-07-19

Similar Documents

Publication Publication Date Title
DE69728630T2 (de) Verfahren und System zur Steigerung der Dienstleitungsqualität bei oder unter einem Grenz-Tarif
DE69800558T2 (de) Anrufweiterleitungssystem
EP0910201A2 (fr) Dispositif et méthode pour réaliser une connexion de parole
DE10001150A1 (de) Adaptive Anpassung der Datenübertragungsparameter bei xDSL-Verfahren zur Verringerung von Übertragungsfehlern bei der Datenübertragung
DE60012816T2 (de) System und Verfahren zur variablen Bandreite Übertragung zwischen einer lokalen Fernsprechvermittlung und einer entfernten Leitungseinheit
DE60100578T2 (de) Vermittlungsschnittstelletechniken für digitalen Teilnehmerleitungen
WO2001052465A1 (fr) Procede de selection de profils fast-retrain existants
DE60107772T2 (de) Eine DSL-kompatible Teilnehmeranschlusskarte für analoge Teilnehmeranschlussleitungen
EP1349334B1 (fr) Methode pour ajuster la mémoire-gigue dans une passerelle de media
DE19502641C2 (de) Anordnung zur Netzabschlußtechnik für öffentliche, stationäre Telekommunikationsnetze
DE4241434C2 (de) Verfahren zum Betreiben eines Fernmeldenetzes
EP1013137B1 (fr) Procede et dispositif de configuration automatique d'un equipement d'abonne a unite d'interface de reseau
EP1289335A2 (fr) Méthode et dispositif pour la commande de charge de ressources de commutation
EP0817524A2 (fr) Méthode pour la transmission de signaux d'information dans le raccordement au réseau d'un abonné
DE2103307A1 (de) Schaltungsanordnung zur Eingabe von Daten in nicht besetzte Kanäle eines Multiplexsystem
WO2001052464A1 (fr) Procede de realisation adaptative d'un tableau d'options de debits de donnees tenant compte des lignes et des perturbations pour procede de transmission de donnees xdsl
DE102005046780A1 (de) Vorrichtung und Verfahren zum Weiterleiten von Telefondaten
DE10104705B4 (de) Verfahren und Telekommunikationseinrichtung zum Übertragen von Sprach- und Allgemeindaten
DE102004043683B4 (de) Verfahren und Vorrichtung zur Datenübertragung in einem Paket basierten Übertragungsnetz sowie entsprechend ausgestaltetes Netzelement
DE4000932C2 (de) Verfahren zur Veränderung der Bitfehlerrate
EP1790175B1 (fr) Procede pour etablir une liaison de telecommunication specifique du reseau, avec un raccordement utilisateur appele, d'un reseau de telecommunication
WO2003005641A1 (fr) Etablissement d'une communication a large bande de maniere a preserver les ressources et a satisfaire aux exigences de taxation
WO2002035882A1 (fr) Dispositif et procede permettant de couper une liaison de transmission de donnees a debit binaire eleve
EP1521391A1 (fr) Procédé pour facturer des communications dans un réseau de communication
DE102012005321A1 (de) Verfahren zum Anpassen einer Datenübertragung in einem VolP-fähigen Telekommunikationsnetzwerk

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA CN DE US

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REF Corresponds to

Ref document number: 10190106

Country of ref document: DE

Date of ref document: 20030731

Kind code of ref document: P

WWE Wipo information: entry into national phase

Ref document number: 10190106

Country of ref document: DE