WO1999013677A1 - Reseaux de telecommunications - Google Patents

Reseaux de telecommunications Download PDF

Info

Publication number
WO1999013677A1
WO1999013677A1 PCT/EP1998/004799 EP9804799W WO9913677A1 WO 1999013677 A1 WO1999013677 A1 WO 1999013677A1 EP 9804799 W EP9804799 W EP 9804799W WO 9913677 A1 WO9913677 A1 WO 9913677A1
Authority
WO
WIPO (PCT)
Prior art keywords
subscriber
connection
network
data
switch
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/EP1998/004799
Other languages
English (en)
Inventor
Magnus HALLENSTÅL
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Priority to AU92565/98A priority Critical patent/AU9256598A/en
Publication of WO1999013677A1 publication Critical patent/WO1999013677A1/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
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H04L12/2869—Operational details of access network equipments
    • H04L12/287—Remote access server, e.g. BRAS
    • H04L12/2872—Termination of subscriber connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H04L12/2869—Operational details of access network equipments
    • H04L12/2878—Access multiplexer, e.g. DSLAM
    • H04L12/2879—Access multiplexer, e.g. DSLAM characterised by the network type on the uplink side, i.e. towards the service provider network
    • H04L12/2881—IP/Ethernet DSLAM
    • 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
    • H04Q11/0435—Details
    • H04Q11/0464—Primary rate access circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/0003—Interconnection between telephone networks and data networks
    • H04M7/0006—Interconnection between telephone networks and data networks where voice calls cross both networks

Definitions

  • the present invention relates to telecommunications networks, and in particular to subscriber connections to the internet. DESCRIPTION OF THE RELATING ART
  • Subscribers are able to connect to the internet by way of the PSTN/ISDN network.
  • the switching resources are often not used efficiently while the subscriber is connected to the internet. This is because the total bandwidth of the subscriber lines is generally much higher than used bandwidth when connected to the internet, due to the bursty characteristics of internet traffic. Thus the internet connection is used inefficiently.
  • the public switch apparatus since the connection time for subscribers connected to the internet is generally much longer than for normal connections, the public switch apparatus will probably experience problems with congestion. Such a congestion problem is likely only to increase as subscriber use increases.
  • a method of controlling the connection of a subscriber to a network in which the connection is maintained only during data transfer between the subscriber and the network in which the connection is maintained only during data transfer between the subscriber and the network.
  • a node apparatus for connecting a subscriber to a network including a control means which is operable to maintain a subscriber's connection to a network only while data is transferred between the network and the subscriber.
  • Figure 1 is a block diagram of a previously considered network connection apparatus
  • FIG. 2 is a block diagram of further previously considered network connections apparatus
  • FIGS. 3, 4 and 5 are block diagrams of a network connection apparatus embodying the present invention during respective connection processes.
  • Figure 6 is a flowchart illustrating steps for operating the network connection apparatus shown in Figures 3, 4 and 5. DETAILED DESCRIPTION OF THE DRAWINGS
  • Figure 1 shows a previously considered switching apparatus in which subscriber lines 10 are connected via a public switch 12 and an ISDN Primary Rate
  • PRI Internet Access Server
  • IAS Internet Access Server
  • the IAS connects to an internet connection 18.
  • a subscriber who wants to be connected to the internet dials a number which identifies the access where the IAS 16 exists. Normally this equipment is connected via the PRI 14, although it could be integrated into the public switch.
  • the IAS 16 terminates the link level normally PPP, and handles authorisation, etc. It will also terminate modem signalling if the subscriber has an analogue line .
  • the total bandwidth of the subscriber lines is much higher than the actual traffic generated by the applications which the subscriber is running, since the traffic is bursty, and so the Figure 1 connection apparatus has poor economy. Furthermore, since the connection time for internet-connected subscribers is generally much longer than for normal connections, the public switch and network experiences congestion problems. These problems can only increase when the penetration of subscribers into the internet becomes much higher than today.
  • the congestion could occur within the switch, or remote subscriber stage, or in the lines connecting that stage to the switch, or in the network if the IAS 16 is connected to another switch in the public network.
  • FIG 2 illustrates three possible solutions to overcome the problems of the Figure 1 switch connection apparatus.
  • a first solution is to connect more switching resources 20 within the public switch 12.
  • additional switching equipment 22 can be inserted between the subscriber lines 10 and the switch 12.
  • An optional connection 24 can be provided between the switches 22 in order to bypass the public switch 12.
  • a third solution would be to include additional switching 26 in the subscriber stage, which provides an optional connection 28 to the terminal equipment 16.
  • additional switching 26 in the subscriber stage, which provides an optional connection 28 to the terminal equipment 16.
  • the problem with all of these solutions is that they all require new installations, which leads to more hardware being required.
  • a preferred embodiment of the present invention will now be described with reference to Figures 3 to 6 , Figures 3, 4 and 5 being block diagrams illustrating the connection apparatus in different respective stages, and Figure 6 being a flowchart illustrating those stages.
  • a subscriber uses a normal set up procedure for setting up a connection to the switch.
  • the present invention is concerned with how the connection to the internet is handled in the public switching apparatus. Internet connection traffic to and from a subscriber tends to be "bursty", meaning that the data transfer is carried out in relatively short bursts.
  • connection resources are somewhat underused.
  • a scanning process takes place.
  • the subscriber is then connected to the IAS only intermittently, when it is determined that traffic is to be transferred between the subscriber and the IAS.
  • a number of subscribers 10 are connected to a local exchange 30.
  • the local exchange 30 includes a control unit 32 which operates to control a switching sub-stage 34 and a main switching stage 36.
  • the local exchange is connected to the IAS 40 by way of a PRI 38, 39.
  • PRI 38, 39 For the sake of clarity, only 3 B-channels (Bl, B2 and B3) are shown in Figures 3, 4 and 5.
  • the D-channel 39 (A, D) is shown.
  • the D-channel connections 39 enable control data to be transferred between the IAS 40 and the control unit 32 of the exchange 30.
  • the PRI actually is only one interface, but is illustrated schematically in Figures 3, 4 and 5.
  • the interface has 23B and ID channels, and in European 30B and ID channels (called primary rate access PRA) . Operation of the connection equipment of Figures 3, 4 and 5 will now be described with reference to those Figures and to the flowchart shown in Figure 6.
  • the IAS 40 signals the control unit 32 on the control channel 39 in order to find out which B-channels are currently free for use, i.e. they are idle .
  • Subscribers who will be offered channels are identified using a standard ISDN call reference. This call reference is associated with a specific idle channel by the IAS 40.
  • step B when the control unit 32 receives the control signal, it will connect the spare B-channels to the subscribers indicated in associated call references. Appropriate paths are connected within the sub-stage switch 34 and the main switching unit 36 (step C) and an acknowledgement is returned to the IAS 40 (step D) .
  • the IAS When the IAS receives the acknowledgement from the control unit 32, it sends out in step E a
  • query_for_connection message to the subscriber terminals. This is done in band within the different B-channels.
  • the query_for_connection message is used to interrogate the connected subscribers to ascertain whether they have internet protocol (IP) datagrams to be sent to the IAS 40.
  • IP internet protocol
  • any scanning frequency can be used, a desirable level would be 4 times per second.
  • IP datagrams to be transmitted from the IAS 40 to a subscriber
  • step G following step E, IP datagrams are sent from the subscriber to the network, after that subscriber has seized the connection for its own use.
  • the IP datagrams are transmitted to the IAS 40 and an internal timer T ⁇ is started.
  • step H The subscribers which receive a connect_request message in step F respond with a "connect_accept” message (step H) so that they can receive IP datagrams from the IAS 40.
  • the IAS then records that a B-channel has been seized by the subscriber.
  • the timer T 1 is restarted. If the timer T x times out, no more IP datagrams are expected to be sent and so the subscriber terminal will release the connection by sending a "release_request" message (in band) and starting a timer T 2 (step I in Figure 6) . If the subscriber terminal has not received a "query_for_connection" message within time T 2 then a new release request will be sent and T 2 restarted.
  • the IAS receives the release_request message, it marks the corresponding B- channel as now being idle and so that B-channel can be included in the list of B-channels for scanning. The newly-used B-channels are noted as being busy
  • step J the process then continues from step A where the currently idle subscriber channels are used for new subscribers connections .
  • One possible additional feature would be to have forced release of a subscriber terminal. This would ensure better distribution and use of resources at the IAS. For example, if there are more than x subscriber channels occupied and some of the terminals have been using a connection for more than y seconds, then the IAS will send a forced release message to those terminals.
  • the values of x and y can be set depending on the scan frequency concentration factor and type of flow.
  • the protocol considerations for the present application must not effect the TCP/IP layers, and therefore the protocol will be below the IP layer. It could possibly be an extension to the PPP layer.
  • the mechanism described above might work for analogue accesses, but then resynchronisation will be needed every time there is a seizure. Furthermore, new types of modems will need to be used.
  • the invention is described herein with reference to a situation in which the internet IAS resides outside the local switch. However, the invention may also be used in a generally similar way when the internet IAS is within the local switch. In that event, the control signalling sent between the IAS and switch can be made more efficient .
  • the subscriber might perhaps be charged not for the total time over which his connection is active, but instead for the actual time for which he has a connection to the internet IAS.
  • the charge might be calculated on the basis of the number of bits of data transmitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

Procédé permettant d'accéder à Internet (40) depuis un réseau RNIS ou un réseau similaire. L'abonné n'est pas connecté en permanence à l'équipement terminal d'Internet (40), mais seulement par intermittence, lorsque du trafic doit être envoyé sur la connexion. Un équipement de commutation (30) recherche régulièrement tous les usagers actifs (par exemple, quatre fois à la seconde) et établit une connexion pour les abonnés qui ont des données à envoyer ou à qui des données doivent être envoyées.
PCT/EP1998/004799 1997-09-08 1998-07-31 Reseaux de telecommunications Ceased WO1999013677A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU92565/98A AU9256598A (en) 1997-09-08 1998-07-31 Telecommunications networks

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9719055.7 1997-09-08
GB9719055A GB2329091A (en) 1997-09-08 1997-09-08 Telecommunications networks

Publications (1)

Publication Number Publication Date
WO1999013677A1 true WO1999013677A1 (fr) 1999-03-18

Family

ID=10818734

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/004799 Ceased WO1999013677A1 (fr) 1997-09-08 1998-07-31 Reseaux de telecommunications

Country Status (3)

Country Link
AU (1) AU9256598A (fr)
GB (1) GB2329091A (fr)
WO (1) WO1999013677A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3233221A1 (de) * 1982-09-07 1984-03-08 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zum uebertragen von signalen zwischen teilnehmeranschlussleitungen und wenigstens einer uebertragungsleitung einer dienstintegrierten fernmeldeanlage
EP0605349A2 (fr) * 1992-12-29 1994-07-06 International Business Machines Corporation Méthode de gestion de commutation en circuit pour des réseaux étendus par des réseaux de données publiques
US5668857A (en) * 1996-03-29 1997-09-16 Netspeed, Inc. Communication server apparatus and method
WO1998017079A1 (fr) * 1996-10-15 1998-04-23 Siemens Aktiengesellschaft Procede pour traiter des connexions de service dans un reseau de telecommunications

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539676A (en) * 1982-05-03 1985-09-03 At&T Bell Laboratories Bulk/interactive data switching system
GB9027186D0 (en) * 1990-12-14 1991-02-06 Int Computers Ltd Data processing network
FI90173C (fi) * 1992-01-31 1993-12-27 Nokia Telecommunications Oy Foerfarande och anordning foer anslutning av en datamaskin till ett digitalt telefonnaet eller annat digitalt oeverfoeringssystem

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3233221A1 (de) * 1982-09-07 1984-03-08 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zum uebertragen von signalen zwischen teilnehmeranschlussleitungen und wenigstens einer uebertragungsleitung einer dienstintegrierten fernmeldeanlage
EP0605349A2 (fr) * 1992-12-29 1994-07-06 International Business Machines Corporation Méthode de gestion de commutation en circuit pour des réseaux étendus par des réseaux de données publiques
US5668857A (en) * 1996-03-29 1997-09-16 Netspeed, Inc. Communication server apparatus and method
WO1998017079A1 (fr) * 1996-10-15 1998-04-23 Siemens Aktiengesellschaft Procede pour traiter des connexions de service dans un reseau de telecommunications

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
MARSHALL G: "ISDN INTERNET ACCESS", LAN MAGAZINE, October 1995 (1995-10-01), pages 56 - 59, 61/62, 65/66, XP000764447 *
TAO J ET AL: "INTERNET ACCESS VIA BASEBAND AND BROADBAND ISDN GATEWAYS", PROCEEDINGS OF THE ANNUAL INTERNATIONAL PHOENIX CONFERENCE ON COMPUTERS AND COMMUNICATIONS, PHOENIX, APR. 12 - 15, 1994, no. CONF. 13, 12 April 1994 (1994-04-12), INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, pages 485 - 490, XP000462600 *

Also Published As

Publication number Publication date
GB2329091A (en) 1999-03-10
GB9719055D0 (en) 1997-11-12
AU9256598A (en) 1999-03-29

Similar Documents

Publication Publication Date Title
US6643262B1 (en) System and method for dynamic sharing of connection resources
US5802042A (en) Autosensing LMI protocols in frame relay networks
JP3961717B2 (ja) 公衆交換電話網およびインターネットを介する呼の最適ルーティング
EP0965204B1 (fr) Acces a des reseaux de telecommunications dans un environnement multiservices
AU6537998A (en) System and method for managing internet user access
RU2218673C2 (ru) Способ обработки соединений в сети связи
US6434120B1 (en) Autosensing LMI protocols in frame relay networks
US6424700B1 (en) Network based distributed PBX with connection loss survival features
EP0969689A1 (fr) Commutation de trafic internet à travers des commutateurs numériques avec un réseau de commutation de canaux temporels
EP0969689A2 (fr) Commutation de trafic internet à travers des commutateurs numériques avec un réseau de commutation de canaux temporels
US5828652A (en) Establishment of a flexible rate interface link to restore channels from a failed communication link
US5446732A (en) Method of and apparatus for signalling between nodes in network
EP0835038B1 (fr) Restauration d'interface à débit de base RNIS sans perte d'appels
WO1999013677A1 (fr) Reseaux de telecommunications
US6370243B2 (en) Method for transmitting data traffic in a telecommunications system
AU741495B2 (en) Procedure for the switching of data traffic in a data communication system
US5761274A (en) Method for regurating call congestion and ISDN exchanger for performing the same
AU741494B2 (en) Procedure for the switching of data traffic in a data communication system
JP3622692B2 (ja) マルチメディア通信における伝送経路制御方法及びその通信システム並びにプログラム
US6519256B1 (en) Technique for constructing and controlling a private line using a switched virtual circuit in an ATM network
JP2581469B2 (ja) ローカルエリアネットワーク間接続装置
KR100237473B1 (ko) 협대역 종합정보통신망에서 패킷 영구 가상채널 설정방법
JP3149262B2 (ja) Ｉｓｄｎ端末装置の通信方法
JPH10257102A (ja) Ｌａｎシステム
JP2000106573A (ja) ネットワーク間接続システム、ゲートウェイ装置、ゲートウェイ間接続方法及び記録媒体

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM HR HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
NENP Non-entry into the national phase

Ref country code: KR

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA