WO1998059467A2 - Procede et dispositif permettant d'etablir des communications entre deux abonnes de deux sous-reseaux differents - Google Patents

Procede et dispositif permettant d'etablir des communications entre deux abonnes de deux sous-reseaux differents Download PDF

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Publication number
WO1998059467A2
WO1998059467A2 PCT/SE1998/001204 SE9801204W WO9859467A2 WO 1998059467 A2 WO1998059467 A2 WO 1998059467A2 SE 9801204 W SE9801204 W SE 9801204W WO 9859467 A2 WO9859467 A2 WO 9859467A2
Authority
WO
WIPO (PCT)
Prior art keywords
gatekeeper
zone
sending
management means
signal
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/SE1998/001204
Other languages
English (en)
Other versions
WO1998059467A3 (fr
Inventor
Theo Kanter
Anders Ryde
Claes Frisk
Anders Christian Svennevik
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
Telia Co AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Telia 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, Telia AB filed Critical Telefonaktiebolaget LM Ericsson AB
Priority to AU79499/98A priority Critical patent/AU7949998A/en
Publication of WO1998059467A2 publication Critical patent/WO1998059467A2/fr
Publication of WO1998059467A3 publication Critical patent/WO1998059467A3/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]
    • H04L12/46—Interconnection of networks
    • H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/45—Network directories; Name-to-address mapping
    • H04L61/4535—Network directories; Name-to-address mapping using an address exchange platform which sets up a session between two nodes, e.g. rendezvous servers, session initiation protocols [SIP] registrars or H.323 gatekeepers

Definitions

  • the present invention relates to the communication between terminals in Internet Protocol (IP) based networks.
  • IP Internet Protocol
  • the Internet is being used to an increasing degree for commercial communication.
  • I- VPN Internet Virtual Private Network
  • a Virtual Private Network may comprise a number of zones, or subnetworks. For example each department in a company may have its own zone, all zones being connected to one large network. Each zone has its own gatekeeper, which holds information about all addresses in its own zone.
  • VPN Virtual Private Network
  • the zone management means holds information about all addresses found in gatekeepers in the VPN and assists in the address resolution within a VPN.
  • - Roaming in the network is supported, that is, users are enabled to move between different terminals and different zones in the network.
  • a private network for audio, video and/or data communication is created, which comprises internal zones and which can cooperate with external clients and location services.
  • the network according to the invention promotes distribution of functionality with respect to TCP/IP.
  • Figure 1 shows a connection between two end users in a zone, assisted by a gatekeeper, according to prior art
  • Figure 2 shows a connection between two end users in different zones, assisted by gatekeepers and a zone management means, according to the invention
  • Figure 3 shows the signalling that takes place when a connection between two end users in different zones is set up, according to the invention
  • Figures 4A and 4B show the signalling that takes place when a new gatekeeper is to be registered and unregistered, respectively, with the zone management means;
  • Figures 5A and 5B show the signalling that takes place when a new endpoint is to be registered, respectively, with the zone management means;
  • Figure 6 illustrates the principles for roaming in the network according to the invention. Detailed Description of Embodiments
  • Figure 1 is a schematic drawing of a connection between two end users 1 in a zone 3 of a private network, assisted by a gatekeeper 5, as common in the art.
  • the gatekeeper 5 holds information about the location of all addresses belonging to its zone, and also sets up connections within the zone.
  • the solution according to the invention may be implemented in any kind of data network.
  • a protocol known as H.323 which is a de facto standard in audio, video and/or data communication, will be used as a basis for the discussion.
  • FIG. 2 is a schematic drawing of a network according to the invention.
  • the network is divided into different zones 13, 13', each zone comprising a gatekeeper 15. 16'.
  • Each end user 11, 11' is connected the gatekeeper 15, 15' of the zone 13, 13 ' to which it belongs.
  • All gatekeepers are connected to one zone management means 17, according to the invention.
  • the zone management means 17 comprises a table 19 of the logical addresses, or alias addresses, of all registered end points in all zones of the network, and the zone in which each end point is registered.
  • the gatekeeper 15 requests the destination from the zone management means 15.
  • the zone management means 17 informs the gatekeeper 15 of the physical location of the end user 11 ' to which the connection is to be set up.
  • the signalling between the gatekeepers 15, 15' of the two networks then proceeds in the way common in the art.
  • FIG. 3 shows the signalling that takes place when an end user 11 in one zone 13 wishes to set up a connection to another end user 11 ' in a different zone 13 ' .
  • the end user 11 who wants to set up a connection to another end user 11 ', sends an Address Request (ARQ) signal to its gatekeeper 15.
  • ARQ Address Request
  • the ARQ signal comprises the following:
  • the destination alias address (the address of the receiving end user 11 ')
  • the Destination Call Signalling Address (normally the address of the receiving end user 11')
  • the gatekeeper 15 sends a Zone Request (Zone RQ) signal comprising the Destination Alias Address of the receiving end user 1 1 ' to the zone management means 17.
  • Zone Request Zone RQ
  • the zone management means 17 responds by sending a Zone Confirmation (Zone CF) signal to the gatekeeper 15, comprising the message
  • the gatekeeper 15 can then send a Location Request (Location RQ) signal to the gatekeeper 15' of the zone to which the receiving end user 11 ' belongs.
  • Location RQ Location Request
  • the gatekeeper 15' responds by sending a Location Confirmation (Location CF) signal to the gatekeeper 15, comprising the Destination Call Signalling Address
  • the gatekeeper 15 responds to the end user 11 with an Address Confirmation (ACF) signal comprising the following information: - the bandwidth available/allocated - the call model to be used
  • ACF Address Confirmation
  • the end user 11 then sends a Setup signal to the gatekeeper 15 comprising the following information
  • the gatekeeper forwards the information in the setup signal to the receiving end user 11 '.
  • the receiving end user 11 ' sends an Address Request (ARQ) signal to its gatekeeper 15', comprising the following information:
  • the gatekeeper 15' responds by sending an Address Confirmation (ACF) signal to the end user 11', comprising the following information
  • the receiving end user 11' then sends a Connect signal to the gatekeeper 15 in the zone of the sending end user 11, comprising the following information:
  • FIG 4A shows the signalling that takes place between a gatekeeper 15, 15' and a zone management means 17 when a new gatekeeper is to be registered with the zone management means 17, if the H.323 protocol is used.
  • the gatekeeper 15, 15' sends a Gatekeeper Registration Request , GK_RRQ, comprising the GatekeeperWellKnownRasAddress, which is the address by which the Gatekeeper 15, 15' is known in the network, to the zone management means 17.
  • the zone management means 17 responds with a Gatekeeper Registration Confirmation, GKJ .CF, signal comprising the Zoneldentifier. which is the identification to be used for the zone of the new gatekeeper, to confirm that the gatekeeper has been registered as a gatekeeper for this zone.
  • FIG 4B shows the signalling that takes place between a gatekeeper 15 and a zone management means 17 when an existing gatekeeper 15 is to be unregistered, that is deleted from the domain of the zone management means 17.
  • the gatekeeper 15 sends a Gatekeeper Unregistration Request, GKJQRQ, to the zone management means 17, comprising the Zoneldentifier.
  • the zone management means 17 responds by sending a Gatekeeper Unregistration Confirmation, GK_UCF, signal back to the gatekeeper 15, comprising the NumberOfEndPointsUnregistered, which indicates how many end points are connected to the gatekeeper 15 that has been unregistered.
  • the GK_UCF signal confirms that the gatekeeper 15, is no longer registered with the zone management means 17.
  • Figure 5 A shows the signalling that takes place between and endpoint, that is a user terminal 11, and a gatekeeper 15, and between a gatekeeper 15 and a zone management means 17, when a new endpoint 11 is to be registered, according to H.323 protocol.
  • the gatekeeper 15 sends an End Point Registration Request, EP_RRQ, signal to the zone management means 17, comprising the following:
  • the zone management means 17 responds to the gatekeeper 15 by sending an End Point Registration Confirmation, EP_RCF, signal, comprising the AliasAddress of the new end point 11.
  • EP_RCF End Point Registration Confirmation
  • the gatekeeper 15 then responds to the new end point 11 with a Registration Confirmation, RCF, signal comprising the following:
  • the new end point 11 has now been registered with the gatekeeper 15 and the zone management means 17.
  • Figure 5B shows the signalling that takes place when an existing endpoint 11 is to be unregistered, that is, now longer to be connected to the gatekeeper 15.
  • EndPointldentifier the identifier of the end point 11 to be unregistered - AliasAddress - the address by which the end point 11 is known in the network
  • the gatekeeper 15 sends an End Point Umegistration Request, EP_URQ, signal to the zone management means 17, comprising the following:
  • the zone management means 17 responds to the gatekeeper 15 by sending an End
  • EPJUCF Point Umegistration Confirmation, EPJUCF, signal, comprising the AliasAddress of the end point 11.
  • the gatekeeper 15 then responds to the new end point 11 with an Unregistration
  • the new end point 11 has now been unregistered from the gatekeeper 15 and the zone management means 17.
  • Figure 6 illustrates the principles for roaming in the network according to the invention, that is, for a person or a terminal to move between zones.
  • a number of end points, 21a, 21b, 21c in a first zone 23 are connected to a first gatekeeper 25.
  • end points 21d, 21e in a second zone 13 ' are connected to a second gatekeeper 25'.
  • Both gatekeepers 25, 25' are connected to a zone management means 27.
  • Each gatekeeper 25, 25' is also connected to a database means 29 and 29' respectively.
  • the database means 29, 29' comprise records of information about the services assigned to each end point 21a,... 2 le in the zone 23, 23 ' to which the database means 29, 29' belongs. Examples of services may be a wake-up call, or the supplementary services as specified in the H.323, such as call redirection.
  • the services are executed in execution means 31 and 31 ' respectively.
  • the logical addresses of all end points or users 21a,...21e - must be unique in the whole network.
  • the most convenient way of assuring this is to include the name of the zone to which the user belongs in the name. In this example this would mean that a user 2 la in the first zone 23 would be identified by its - number (or logical name) together with the number (or logical name) of the zone, for example 23.21a or another well-defined format. The user might keep this name even when he moved to another zone, or the zone name might be changed.
  • the gatekeeper 25' then informs the zone management means 27 that the subscriber is now found in the zone 23 ' of this gatekeeper 25'.
  • the signalling is performed according to Figure 5 A.
  • the user 21a must disconnect from the first gatekeeper 25, as shown in Figure 5B, before connecting to the new gatekeeper 25 '.
  • the zone management means automatically deletes the user 21a from the first gatekeeper 25.
  • the services assigned to the user 21a are stored in the database means 29 connected to tihe first gatekeeper 25.
  • the service records belonging to that user 21a may be moved to the database means 29' connected to the new gatekeeper 25 '.
  • a service When a service is activated, it will then be executed in the execution means 31' of this zone 23 '. It would also be possible to keep the service records in the first database 29. In that case, the execution of the service would be carried out in the execution means 31 of the first zone 23.
  • Moving within one zone may be done in the same way, except that no changes are needed to the services.

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

Abstract

La présente invention concerne un procédé et un appareil permettant d'établir des communications entre deux abonnés dans un réseau basé sur un protocole Internet (IP). Ce réseau est divisé en zones, ou sous-réseaux, chacune étant gérée par un gardien de passerelle (15, 15'; 25, 25'). Tous les gardiens de passerelles sont reliés à un moyen de gestion de zone (17; 27) qui actualise les informations concernant les adresses logiques de tous les terminaux (11, 11') des utilisateurs. Un premier utilisateur (11) qui appartient à une première zone (13) gérée par un premier gardien de passerelle et qui souhaite établir une communication avec un autre utilisateur (11') d'une autre zone (13') gérée par un second gardien de passerelle (15'), envoie une demande au premier gardien de passerelle (15) qui la transmet au moyen de gestion de zone (17). Le moyen de gestion de zone (17) demande l'adresse du second gardien de passerelle (15') et renvoie une confirmation d'adresse pour permettre l'établissement de la communication.
PCT/SE1998/001204 1997-06-23 1998-06-22 Procede et dispositif permettant d'etablir des communications entre deux abonnes de deux sous-reseaux differents Ceased WO1998059467A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU79499/98A AU7949998A (en) 1997-06-23 1998-06-22 Method and device for establishing connections between two subscribers in two different subnetworks

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9702384A SE513246C2 (sv) 1997-06-23 1997-06-23 Förfarande och anordning i ett IP-baserat nät
SE9702384-0 1997-06-23

Publications (2)

Publication Number Publication Date
WO1998059467A2 true WO1998059467A2 (fr) 1998-12-30
WO1998059467A3 WO1998059467A3 (fr) 1999-04-01

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AU (1) AU7949998A (fr)
SE (1) SE513246C2 (fr)
WO (1) WO1998059467A2 (fr)

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SE9702384L (sv) 1998-12-24
SE513246C2 (sv) 2000-08-07
WO1998059467A3 (fr) 1999-04-01
AU7949998A (en) 1999-01-04
SE9702384D0 (sv) 1997-06-23

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