EP1436965A2 - Verkehrssteuerung eines kommunikationsnetzes mit einem cluster von verkehrsstromsteuerungen mit gemeinsamer registrierungsdatenbasis - Google Patents
Verkehrssteuerung eines kommunikationsnetzes mit einem cluster von verkehrsstromsteuerungen mit gemeinsamer registrierungsdatenbasisInfo
- Publication number
- EP1436965A2 EP1436965A2 EP02776840A EP02776840A EP1436965A2 EP 1436965 A2 EP1436965 A2 EP 1436965A2 EP 02776840 A EP02776840 A EP 02776840A EP 02776840 A EP02776840 A EP 02776840A EP 1436965 A2 EP1436965 A2 EP 1436965A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cluster
- traffic flow
- end point
- traffic
- gatekeeper
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1043—Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
-
- 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
- H04L47/15—Flow control; Congestion control in relation to multipoint traffic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
- H04L65/1106—Call signalling protocols; H.323 and related
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
Definitions
- the ITU-T standard H.323 defines a protocol family for the standardized control of services in multimedia packet networks (in particular IP networks), i.e. of networks in which a plurality of different services can be transmitted. These services, which are implemented in a unified, multimedia environment, are also called 'multimedia applications'.
- multimedia application includes both services and ordinary telephony
- VoIP Key 'Voice over IP
- VoIP video on demand
- the essential network components of the packet-oriented H.323 are endpoints (units that want to use applications such as a PC client), gateways (GW) for the transition to the line-oriented telephone network, multipoint control units (MCU) for controlling conferences and gatekeepers (GK ).
- a gatekeeper controls access to the IP network for all H.323 network components (endpoints, GW, MCU) that belong to its zone.
- the following functions are assigned to a GK:
- the gatekeepers of a cluster jointly serve a registration zone and share the control traffic volume.
- the end points of this zone know at least one primary GK and mostly one secondary GK.
- the other existing GK of the cluster are generally not directly visible to them, even if this is generally not excluded.
- an endpoint within its gatekeeper cluster has registered with its primary GK using the H.323 message RRQ (Registration Request). If the primary GK is not available, the endpoint registers with its secondary GK (standard procedure in H.323).
- the RRQ message is part of the so-called RAS messages (RAS - Registration, Administration and Status). So that the endpoint can now also be reached via any other GK of the cluster with which other endpoints or gateways have registered, the registration data of an endpoint is e.g. sent to all gatekeepers of the gatekeeper cluster at regular intervals using UDP multicast.
- the deregistration - also called 'deregistration' - of an end point with a GK
- the other GK of the cluster are informed about it using the same method. This ensures that all gatekeepers in a cluster have identical registration databases.
- the GK of a GK cluster advantageously form its own multicast group, so that the multicast messages do not burden the other hosts of the LAN segment in which the gatekeepers of the cluster are located.
- the additional network load for exchanging the registration data is limited by the use of multicast messages, since the gatekeepers of a cluster form a well-defined, self-contained multicast group.
- registration and der- registration messages are not sent as often as signaling messages for connection establishment and disconnection.
- a nice advantage of the identical registration databases is that gateways, endpoints, MCUn or gatekeepers of other zones do not have to know which GK of the cluster a particular endpoint they want to reach is registered with.
- a gateway connects to a GK with which the desired end point has not registered, this GK also has the IP address (and possibly security data) of the end point and can establish a connection directly to the end point (so-called ' direct routed call model 'of the H.323 standard).
- the H.323 RAS connection thus exists to a gatekeeper of the cluster, while the connection signaling does not run via a gatekeeper or at least not via this gatekeeper, but via another gatekeeper of the cluster.
- the desired end point is registered with the GK, which is also to establish the connection, the connection is set up according to the 'gatekeeper routed call model'. Connections from the end point to a destination, on the other hand, always run via the primary GK with which the end point is registered.
- the endpoints monitor the gatekeeper with which they have registered via periodically sent H.323 RRQ messages which the GK has to answer. If the gatekeeper does not acknowledge the RRQ message, the endpoint tries to register with another gatekeeper known to it. This can be a so-called secondary GK, for example. Even if all GK known to an end point have failed, it can still be reached by the other GK of the cluster, since these too have saved the profile of the end point (which in particular contains the IP address of the end point). An "intelligent" endpoint can also learn the IP addresses of other gatekeepers, by capturing their IP address during a call and then registering with them if necessary (with the aim of not only being available, but also being able to establish connections again).
- the invention is thus a solution which ensures the individual accessibility of the subscribers at a very low cost and at the same time enables GK zones to be scaled to increasing numbers of subscribers without great effort by simply installing additional GK servers in a zone which is in line with the traffic volume automatically share this zone with each other.
- FIG. 2 shows a connection setup in the arrangement according to FIG. 1.
- FIG. 1 shows the registration process for an H.323 end point, which is designed as an H.323 client EP, and an H.323 end point, which is designed as an H.323 gateway GW.
- the H.323 client EP registers with its primary gatekeeper GKi, the gateway GW with its primary gatekeeper GK 2 in accordance with the RAS (Registration, Admission and Status) protocol.
- the registration of the client EP is stored in the registration database DBi of the gatekeeper GKi, that of the gateway GW in the registration database DB 2 of the gatekeeper GK 2 .
- the gatekeepers GKi and GK 2 form a gatekeeper cluster CL according to the invention.
- the registration data are exchanged, for example in a common LAN (Local Area Network) segment, between GKi and GK 2 in accordance with an exchange protocol DBEX, which is preferably implemented as a multicast MC.
- DBEX Exchange Protocol
- the registration of the H.323 client EP with the gatekeeper GK 2 and that of the gateway GW with gatekeeper GK ⁇ are thus known.
- the data of all registered endpoints EP, MG are available to each of the gatekeepers (eg IP address, crypto token for the secure transmission of messages, etc.), which provides a common registration database.
- FIG. 2 shows the connection establishment from the gateway GW to the H.323 client EP. Since the gateway is registered with GK 2, it sends RAS messages to this gatekeeper. A subsequent connection establishment request from the gateway GW to the client EP is then communicated to the gatekeeper GK 2 in accordance with the gatekeeper routed model GRM. Since this GK 2 also knows the registration database DBi of the gatekeeper GKi and thus also has the registration data of the H.323 client EP, it knows that the client EP is online and can signal the signaling messages from the gateway directly, ie according to the direct routed call model DRM, forward to the client EP. The client EP is in turn registered with GKi, so it will use RAS to inquire whether it can accept connections from gatekeeper GK 2 . Since gatekeeper GKi is the registration database DB 2 of gatekeeper GK 2 of cluster CL Knows according to the invention, gatekeeper GKi can send the client EP a positive confirmation on its request.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Telephonic Communication Services (AREA)
- Traffic Control Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10151443 | 2001-10-18 | ||
| DE10151443A DE10151443A1 (de) | 2001-10-18 | 2001-10-18 | Cluster von Verkehrsstromsteuerungen mit gemeinsamer Registrierungsdatenbasis |
| PCT/DE2002/003936 WO2003036868A2 (de) | 2001-10-18 | 2002-10-17 | Verkehrssteuerung eines kommunikationsnetzes mit einem cluster von verkehrsstromsteuerungen mit gemeinsamer registrierungsdatenbasis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1436965A2 true EP1436965A2 (de) | 2004-07-14 |
Family
ID=7702921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02776840A Withdrawn EP1436965A2 (de) | 2001-10-18 | 2002-10-17 | Verkehrssteuerung eines kommunikationsnetzes mit einem cluster von verkehrsstromsteuerungen mit gemeinsamer registrierungsdatenbasis |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20050021820A1 (de) |
| EP (1) | EP1436965A2 (de) |
| AU (1) | AU2002339376A1 (de) |
| DE (1) | DE10151443A1 (de) |
| WO (1) | WO2003036868A2 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7363381B2 (en) * | 2003-01-09 | 2008-04-22 | Level 3 Communications, Llc | Routing calls through a network |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6205211B1 (en) * | 1998-08-04 | 2001-03-20 | Transnexus, Llc | Internet telephony call pricing center |
| US6965591B1 (en) * | 1998-09-14 | 2005-11-15 | At&T Corp. | System and method for gatekeeper-to-gatekeeper communication |
| US6229804B1 (en) * | 1998-11-17 | 2001-05-08 | 3Com Corporation | Gatekeeper election methods for internet telephony |
| US6667968B1 (en) * | 1998-12-03 | 2003-12-23 | Telefonaktiebolaget L M Ericsson (Publ) | System and method for providing multiple endpoints in a device disposed in a packet-switched network |
| US6519249B1 (en) * | 1998-12-23 | 2003-02-11 | Nortel Networks Ltd | Scalable gatekeepers in an internet telephony system and a method of operation |
| NO310800B1 (no) * | 1999-02-09 | 2001-08-27 | Ericsson Telefon Ab L M | Anordning for distribusjon og befordring av trafikk i et nett, spesielt H.323 generert trafikk |
| GB9903125D0 (en) * | 1999-02-11 | 1999-04-07 | Nokia Telecommunications Oy | Handover in a mobile communication system |
| US6785223B1 (en) * | 1999-04-22 | 2004-08-31 | Siemens Information And Communication Networks, Inc. | System and method for restarting of signaling entities in H.323-based realtime communication networks |
| US6751652B1 (en) * | 1999-06-29 | 2004-06-15 | Transnexus, Inc. | Intelligent end user devices for clearinghouse services in an internet telephony system |
| US7099301B1 (en) * | 1999-07-13 | 2006-08-29 | Innomedia, Inc. | Voice over internet protocol proxy gateway |
| NO314608B1 (no) * | 1999-10-04 | 2003-04-14 | Ericsson Telefon Ab L M | Fremgangsmåte for ruting av anrop |
| US7203956B2 (en) * | 1999-12-22 | 2007-04-10 | Transnexus, Inc. | System and method for the secure enrollment of devices with a clearinghouse server for internet telephony and multimedia communications |
| DE10004811A1 (de) * | 2000-02-04 | 2001-08-09 | Ericsson Telefon Ab L M | Kommunikationssystem, Verfahren und Steuereinrichtung zum Leiten von Anrufen innerhalb von privaten Netzen, die über geographische beabstandete Zonen verteilt sind |
| US7218722B1 (en) * | 2000-12-18 | 2007-05-15 | Westell Technologies, Inc. | System and method for providing call management services in a virtual private network using voice or video over internet protocol |
| US7197567B1 (en) * | 2002-02-28 | 2007-03-27 | Cisco Technology, Inc. | Devices, softwares and methods for enabling SIP devices to operate in H.323 networks and H.323 devices to operate in sip networks |
-
2001
- 2001-10-18 DE DE10151443A patent/DE10151443A1/de not_active Withdrawn
-
2002
- 2002-10-17 AU AU2002339376A patent/AU2002339376A1/en not_active Abandoned
- 2002-10-17 US US10/493,252 patent/US20050021820A1/en not_active Abandoned
- 2002-10-17 EP EP02776840A patent/EP1436965A2/de not_active Withdrawn
- 2002-10-17 WO PCT/DE2002/003936 patent/WO2003036868A2/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03036868A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10151443A1 (de) | 2003-05-08 |
| WO2003036868A2 (de) | 2003-05-01 |
| US20050021820A1 (en) | 2005-01-27 |
| AU2002339376A1 (en) | 2003-05-06 |
| WO2003036868A3 (de) | 2003-11-27 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NOKIA SIEMENS NETWORKS GMBH & CO. KG |
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| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
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