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WO1998048590A1 - Procede de transmission d'informations cote abonne dans un reseau de branchements locaux - Google Patents

Procede de transmission d'informations cote abonne dans un reseau de branchements locaux Download PDF

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Publication number
WO1998048590A1
WO1998048590A1 PCT/DE1998/000867 DE9800867W WO9848590A1 WO 1998048590 A1 WO1998048590 A1 WO 1998048590A1 DE 9800867 W DE9800867 W DE 9800867W WO 9848590 A1 WO9848590 A1 WO 9848590A1
Authority
WO
WIPO (PCT)
Prior art keywords
subscriber
information
packet data
time slots
channel
Prior art date
Application number
PCT/DE1998/000867
Other languages
German (de)
English (en)
Inventor
Ulrich Gremmelmaier
Manfred Huber
Gernot Von Der Straten
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
Priority to EP98928063A priority Critical patent/EP0976298A1/fr
Priority to CA002286803A priority patent/CA2286803A1/fr
Publication of WO1998048590A1 publication Critical patent/WO1998048590A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/64—Hybrid switching systems
    • H04L12/6418—Hybrid transport
    • 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
    • H04Q11/0457—Connection protocols
    • 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
    • H04Q11/0478—Provisions for broadband connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5672—Multiplexing, e.g. coding, scrambling
    • H04L2012/5675—Timeslot assignment, e.g. TDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/64—Hybrid switching systems
    • H04L12/6418—Hybrid transport
    • H04L2012/6445—Admission control
    • H04L2012/6448—Medium Access Control [MAC]
    • H04L2012/6454—Random, e.g. Ethernet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/64—Hybrid switching systems
    • H04L12/6418—Hybrid transport
    • H04L2012/6445—Admission control
    • H04L2012/6459—Multiplexing, e.g. TDMA, CDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/64—Hybrid switching systems
    • H04L12/6418—Hybrid transport
    • H04L2012/6475—N-ISDN, Public Switched Telephone Network [PSTN]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13174—Data transmission, file transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13201—Change-over of service during connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13204—Protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13209—ISDN
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13216—Code signals, frame structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1329—Asynchronous transfer mode, ATM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13293—TASI, irregular time division, burst switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13296—Packet switching, X.25, frame relay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13332—Broadband, CATV, dynamic bandwidth allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13392—Channels assigned according to rules

Definitions

  • the invention relates to a method for subscriber-side information transmission in a connecting line network according to the preamble of claim 1.
  • Modern telecommunications networks have digital access line networks in the subscriber access area that connect one or more local exchanges to subscriber terminals via subscriber access lines.
  • Line networks were originally conceived for the transmission of low-frequency information signals, such as in analogue telephony or when using narrowband services.
  • the bit rate transmitted on the subscriber side in the access network is, for example, narrowband ISDN 2 x 64 kBit / s for 2 B channels (user channels) plus 16 kBit / s for a D channel (control channel) such that the longest occurring connecting lines can still be used.
  • narrowband ISDN 2 x 64 kBit / s for 2 B channels (user channels) plus 16 kBit / s for a D channel (control channel) such that the longest occurring connecting lines can still be used.
  • a large part of the maximum reliably transmissible bit rate ie the maximum bandwidth in the area of the connecting line network with shorter connecting lines, remains unused.
  • the damping measure for symmetrical double cores of copper connecting lines which limits the range of the digital signal transmission, increases with the line length.
  • connection line networks designed for narrowband services are consequently also suitable for the transmission of broadband services.
  • procedures have become established with which the existing copper lines in the connection network can be used for the transmission of digital information signals. These include, for example the so-called ADSL method (from the English-speaking From ⁇ pressure "Asymmetrical Digital Subscriber Line” for "asymmetrical digital subscriber line”) and the so-called HDSL process (from the English term "high bit rate Digital Subscriber Line” for "digital subscriber line for high bit rate” ).
  • DE 43 43 982 describes a connection line network with subscriber lines for the transmission of digital information signals, in which bit patterns are sent from a local exchange over a subscriber line and the bit patterns which are mirrored and returned to the subscriber are evaluated in order to determine the maximum possible bit rate per transmission line. The bit patterns received are then evaluated in the exchange. The maximum possible bit rate is then determined depending on the results.
  • a method for transmitting information signals in a connection line network via subscriber lines in which transmission parameters of the subscriber line are measured and settings are made in the exchange and subscriber settings in accordance with the measurement results. These settings are, for example, the maximum bit rate that can be transmitted safely and, if applicable, the transmission method.
  • the bit rate and transmission method can be carried out adaptively on a line-by-line basis as a function of the physical transmission parameters. This makes it possible, in addition to a D channel with a bandwidth of 16 kbit / s, to transmit several user channels, each with a bandwidth of 64 kbit / s.
  • the maximum number of user channels that can be transmitted depends on the bandwidth of the individual subscriber line configuration, in particular on the length of the subscriber line.
  • a method for subscriber-side information transmission in such connection line networks is from the article by MN Huber and PJ Kühn, Modeling of a Multi-Queue Polling System with Arbitrary Server Interrupts for the Idle-Slot-Concatenation Packet Switching Principle in a Hybrid CS / PS Node; Proceedings of the 12th International Teletraffic Congress, Torino, 1988, known to provide an information transport frame that is divided into equally sized time slots.
  • Each of these time slots is either occupied with switching system data (CS data from the English term circuit switching) or with packet data (PS data from the English language phrase packet switching), all the time slots not occupied with switching system data being combined to form a remaining packet data transport channel (idle slot concatenation).
  • the type of traffic from which the remaining packet data transport channel is occupied is determined by the connection configuration, in particular by the packet data protocol that can be edited by the subscriber-side protocol evaluation device.
  • the invention is based on the object of specifying a method for subscriber-side information transmission which enables a more flexible use of connecting line networks.
  • the invention solves this problem in that each time slot of the remaining packet data Transport channel a protocol discriminator is inserted. This protocol discriminator enables the data contained in a time slot of the remaining packet data transport channel to be uniquely assigned to a traffic type, so that a traffic-type-specific protocol evaluation can be carried out in each case.
  • the method according to the invention thus makes it possible to use the remaining packet data transport channel, which subsequently also is the ISC channel (from the English term idle slot
  • Concatenation is called, by different types of traffic, such as ATM and LAN.
  • a further development of a method according to the invention provides that for the transmission of messages of variable length in the remaining packet data transport channel, each message is preceded by its length.
  • the length of a message is in each case predetermined by the constant length of an ATM cell, so that the protocol discriminator suffices to know the length of each message on the receiver side.
  • messages of variable length e.g. 16 bit word
  • a length specification inserted per message can be transmitted.
  • Another development of a method according to the invention provides for the transmission of messages of variable length not to occupy a time slot of the remaining packet data transport channel in the remaining packet data transport channel between two messages.
  • time slots of the information transport frame in a further development of a method according to the invention Because it corresponds to a 64 kbit / s channel, the low-loss transmission of information from an ISDN basic access is possible, which has two useful information channels with 64 kbit / s transmission capacity and a signaling channel with 16 kbit / s transmission capacity.
  • a particularly favorable further development of a method according to the invention results if the duration of an information transport frame is 0.125 milliseconds in each case.
  • the structure of an information transport frame according to the invention corresponds to a modified version of a standardized ISDN primary rate connection.
  • the number of time slots of an information transport frame is preferably between 5 and 32, depending on the bit rate of a transmission system in which the method is used.
  • a favorable embodiment of a method according to the invention for subscriber-side information transmission provides that a time slot of the information transport frame is used for frame control and a time slot for ISDN signaling. These time slots provided for the transmission of control information are preferably arranged at fixedly defined locations within the information transport frame. The time slot used for frame control is preferably provided at the beginning of an information transport frame in order to enable simple synchronization.
  • the information transport frame is divided into an even number of time slots, synchronization is additionally facilitated if the time interval between the time slot used for frame control and the time slot used for ISDN signaling of an information transport frame is the same as the time interval between it and the ISDN Signaling used time slot and the time slot used for frame control of the subsequent information transport frame.
  • FIG. 1 shows an exemplary embodiment of an information transport frame and the conversion of the information from an ATM cell into the ISC channel of this information transport frame
  • Figure 2 shows a schematic block diagram of an exemplary embodiment of a connecting line network for connecting a subscriber unit to an ISDN network, an ATM network and a LAN network.
  • the remaining time slots 2 to 10 and 12 to 20 can in principle be freely assigned with switching system data or packet data.
  • time slots 3, 6, 7, 9, 12, 15, 17, 18 and 20 are occupied with switching system data in the form of ISDN user channel information.
  • ISDN payload channel information can be, for example, facsimile information or voice information.
  • Time slots 2, 4, 5, 8, 10, 13, 14, 16 and 19 together form an ISC channel for the transmission of packet data.
  • an ATM cell ATM shown in FIG. 1 is transmitted in the ISC channel of the information transport frame.
  • the information contained in the ATM cell ATM is shown in Divided information parts 1, 2, 3, 4, each Informa tion ⁇ part 1, 2, 3, 4 is smaller than that of a time slot of the information transport frame Transd bare amount of information PS.
  • a protocol discriminator PD is added to each of the pieces of information 1, 2, 3, 4 of the ATM cell information. In the illustration according to FIG. 1, this is arranged on the left side, that is to say at the beginning of the information PS, for a time slot.
  • FIG. 2 shows a schematic block diagram of a connecting line network AN with a switching node CPN for switching through switching system data and packet data to a subscriber connecting line and thus in the exemplary embodiment shown for connecting a subscriber line unit SSU (subscriber unit) to an ISDN network ISDN-NET an ATM network ATM-NET and to a local data network LAN.
  • SSU subscriber unit
  • the subscriber-side information transmission that is to say the information transmission between subscriber unit SSU and the connecting line network AN takes place in the exemplary embodiment according to FIGS. 1 and 2 with the aid of information transport frames according to FIG. 1.
  • the first time slot of an information transport frame is used in each case for transmitting the frame control information Sync OAM and the eleventh time slot of an information transport frame is used to transmit the ISDN signaling information between the subscriber unit SSU and the ISDN network ISDN-NET.
  • Part of the time slots of an information transport frame is used for the transmission of ISDN user information between the subscriber unit SSU and the ISDN network ISDN-NET.
  • the remaining time slots of an information transport frames together form an ISC channel and either serve to transmit information between the subscriber unit SSU and the local data network LAN or between the subscriber unit SSU and the ATM network -ET.
  • the type of information transmitted in the time slots of the ISC channel is identified in each time slot PS by a protocol discriminator PD.
  • part 1, 2, 3, 4 of an ATM cell ATM is transmitted in each time slot of the packet data transport channel, so that the protocol discriminator PD in each case contains the information “ATM”.
  • the time slots with the packet data information PS can be collected and assembled on the receiver side, that is to say either in the line network AN or in the subscriber unit SSU (depending on the direction of transmission).
  • the ATM cell thus composed can then either be processed on the subscriber side or forwarded from the access line network AN to the ATM network ATMNET.
  • the protocol discriminator (not shown) of each time slot of the ISC channel must contain the information LAN accordingly, so that the information can be processed or forwarded accordingly.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

L'invention concerne un procédé pour le transfert d'informations côté abonné dans un réseau de branchements locaux (AN), faisant appel à une trame de transport d'informations divisées en tranches de temps de grandeur égale, une partie de ces tranches de temps étant des tranches de temps pour canal utile, dont chacune est occupée soit avec des données de système de transmission (ISDN) ou des données en paquet (PS) et toutes les tranches de temps pour canal utile non occupées par des données de système de transmission (ISDN) sont réunies en un canal de transport de données en paquet. Dans chaque tranche de temps du canal de transport de données en paquet restant, est incorporé un discriminateur de protocoles (PD) qui permet une affectation univoque des données contenues dans une tranche de temps du canal de transport de données en paquet restant à un type de trafic.
PCT/DE1998/000867 1997-04-18 1998-03-24 Procede de transmission d'informations cote abonne dans un reseau de branchements locaux WO1998048590A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP98928063A EP0976298A1 (fr) 1997-04-18 1998-03-24 Procede de transmission d'informations cote abonne dans un reseau de branchements locaux
CA002286803A CA2286803A1 (fr) 1997-04-18 1998-03-24 Procede de transmission d'informations cote abonne dans un reseau de branchements locaux

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19716429.3 1997-04-18
DE19716429 1997-04-18

Publications (1)

Publication Number Publication Date
WO1998048590A1 true WO1998048590A1 (fr) 1998-10-29

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EP (1) EP0976298A1 (fr)
CA (1) CA2286803A1 (fr)
WO (1) WO1998048590A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000052953A1 (fr) * 1999-03-04 2000-09-08 Rvs Datentechnik Gmbh Procede et dispositif de transmission de donnees continue
WO2002091791A1 (fr) * 2001-05-09 2002-11-14 Siemens Aktiengesellschaft Procede d'attribution dynamique de canaux
WO2003067920A1 (fr) * 2002-02-04 2003-08-14 Telefonaktiebolaget Lm Ericsson (Publ) Procede et appareil de multiplexage de sessions internet commutees
EP1227699A3 (fr) * 2001-01-24 2007-05-09 Siemens Aktiengesellschaft Méthode pour commander des transports multimédia

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5229992A (en) * 1991-03-28 1993-07-20 Sprint International Communications Corp. Fixed interval composite framing in integrated services networks

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5229992A (en) * 1991-03-28 1993-07-20 Sprint International Communications Corp. Fixed interval composite framing in integrated services networks

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
GERKE P R: "THE INTEGRATED SERVICES DIGITAL NETWORK (ISDN) AS A BASIS FOR COMBINED TELECOMMUNICATION", FROM ELECTRONICS TO MICROELECTRONICS (EUROCON '80), 4TH CONFERENCE, 24 March 1980 (1980-03-24) - 28 March 1980 (1980-03-28), STUTTGART, pages 233 - 236, XP002037606 *
HUBER M N ET AL: "MODELLING OF A MULTI-QUEUE POLLING SYSTEM WITH ARBITRARY SERVER INTERRUPTS FOR THE IDLE-SLOT-CONCATENATION PACKET SWITCHING PRINCIPLE IN A HYBRID CS/PS NODE", PROCEEDINGS OF THE TWELFTH INTERNATIONAL TELETRAFFIC CONGRESS (ITC-12), vol. 1, 1 June 1988 (1988-06-01) - 8 June 1988 (1988-06-08), TORINO, pages 521 - 528, XP000279785 *
MORITA S ET AL: ""ELASTIC BASKET SWITCHING" APPLICATION TO DISTRIBUTED PBX", ICC '87, vol. 2 OF 3, 7 June 1987 (1987-06-07) - 10 June 1987 (1987-06-10), SEATTLE, pages 789 - 793, XP002063261 *
SLATTER R C ET AL: "CUSTOMER ACCESS TO INTEGRATED SERVICES DIGITAL NETWORKS", ELECTRICAL COMMUNICATION, vol. 56, no. 1, 1981, pages 31 - 43, XP002053606 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000052953A1 (fr) * 1999-03-04 2000-09-08 Rvs Datentechnik Gmbh Procede et dispositif de transmission de donnees continue
EP1227699A3 (fr) * 2001-01-24 2007-05-09 Siemens Aktiengesellschaft Méthode pour commander des transports multimédia
WO2002091791A1 (fr) * 2001-05-09 2002-11-14 Siemens Aktiengesellschaft Procede d'attribution dynamique de canaux
DE10122419B4 (de) * 2001-05-09 2007-11-08 Siemens Ag Verfahren zur dynammischen Kanalzuordnung
WO2003067920A1 (fr) * 2002-02-04 2003-08-14 Telefonaktiebolaget Lm Ericsson (Publ) Procede et appareil de multiplexage de sessions internet commutees

Also Published As

Publication number Publication date
EP0976298A1 (fr) 2000-02-02
CA2286803A1 (fr) 1998-10-29

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