WO2006042800A1 - Etablissement d'une liaison de service entre un terminal et un premier element reseau ayant des versions de protocole ip differentes - Google Patents

Etablissement d'une liaison de service entre un terminal et un premier element reseau ayant des versions de protocole ip differentes Download PDF

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Publication number
WO2006042800A1
WO2006042800A1 PCT/EP2005/055111 EP2005055111W WO2006042800A1 WO 2006042800 A1 WO2006042800 A1 WO 2006042800A1 EP 2005055111 W EP2005055111 W EP 2005055111W WO 2006042800 A1 WO2006042800 A1 WO 2006042800A1
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WO
WIPO (PCT)
Prior art keywords
network element
terminal
support
protocol version
former
Prior art date
Application number
PCT/EP2005/055111
Other languages
German (de)
English (en)
Inventor
Peter Braun
Wolfgang BÖHM
Bernhard Petri
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
Publication of WO2006042800A1 publication Critical patent/WO2006042800A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H04L69/167—Adaptation for transition between two IP versions, e.g. between IPv4 and IPv6

Definitions

  • the invention relates to a method and a system for establishing a service connection between a terminal which can support at least two IP protocol versions, and a former network element, which can support only an IP protocol version, via a communication network.
  • Dual-stack terminals or network elements are devices (eg mobile terminals, mobile organizers, computers, mobile computers, landline telephones, application servers, etc.) that can support both the IP protocol versions IPv4 and IPv6 for communication.
  • so-called “single-stack” terminals or network elements only support one IP protocol version (either IPv4 or IPv6).
  • IPv4 addresses are scarce, with the increasing spread of mobile data services, not every terminal or network element can be permanently assigned a public, globally routable IPv4 address (public IPv4 address).
  • private IPv4 addresses do not allow cross-network direct communication (peer-to-peer communication) with terminals or network elements in communication networks of other operators. Therefore, future support for the IPv6 protocol version will be introduced in a communication network and dual-stack terminals or network elements that can support the IPv6 and still the IPv4 protocol version.
  • dual-stack terminals or network elements book or register with the IP protocol version IPv6 in a communication network such as a cellular mobile network and receive a communication channel (PDP context), over which only data with the IPv6 protocol Version can be sent.
  • PDP context communication channel
  • the communication partners involved To establish a peer-to-peer connection (P2P connection), the communication partners involved must determine the IP address of the other communication partner and exchange the desired communication endpoints (IP address, port) for the P2P connection, via which the Communication or the service connection is handled directly.
  • a server for example a SIP proxy server
  • the communication partners such as mobile devices, mobile computers, computers, landline telephones, application servers, mobile organizers, etc. register with the server when they log in to the network with their dynamically assigned IP address (eg SIP proxy server).
  • SIP proxy server dynamically assigned IP address
  • J. Wiljakka et al. (Analysis on IPv6 Transition in 3GPP Networks, http://www.ietf.org/internet-drafts/draft-ietf-v6ops-3gpp-analysis-10.txt, May 2004) describes one way to address the IPv4-IPv6 communication problem to solve.
  • a collaboration unit (interworking unit) is introduced, which accepts the data packets with different IP protocols and forwards them to the communication partner in the supported IP protocol version (eg NAT-PT).
  • an application layer gateway application layer gateway
  • the application layer gateway is located in the signaling path and modifies the signaling messages for Communication partner so that the IP addresses of the communication partners are replaced by the IP address of the interworking unit.
  • this method has a low scalability, no end-to-end encryption and causes high costs.
  • the object of the present invention is to provide an efficient and cost-effective method and system for interworking between terminals that can support at least two IP protocol versions and former network elements that can only support one IP protocol version to realize a service connection.
  • a core of the invention can be seen in that a terminal (dual stack terminal) which can support at least two IP protocol versions, via a communication network, a second communication channel with the IP protocol Versions, the The first network element can support, builds, which persists only as long as the communication or the service connection persists.
  • the terminal may be a mobile terminal, a landline telephone, a mobile computer, a computer, a mobile organizer, etc.
  • the former network element may be a landline telephone, a mobile station, a mobile organizer, a mobile computer, a computer, an application server, or the like.
  • the communication network used may be a packet-switched communications network, such as a GPRS network, a UMTS network, a WLAN network, a LAN network and / or a cellular mobile radio network.
  • the signaling is handled for a connection between the terminal and the former network element with different IP protocol versions indirectly via a second network element in a communication network through which the communication partner (terminal and the first network element) can find and exchange their communication endpoints.
  • the terminal communicates with the second network element via the communication network in which the terminal has registered.
  • the signaling such as SIP, H323, RTSP etc., the service connection or the service and data communication to this second network element can be carried out according to the invention via different IP protocol versions. For the method or system according to the invention, the selection of the signaling Protocol irrelevant.
  • the second network element such as a SIP proxy server, a call status control function, a gateway network element, etc., which can receive signaling messages from, for example, both IPv4 and IPv6 terminals, routes this signaling Messages to the former network element of the communication partner with the IP protocol version specified at registration.
  • the terminal receives the information that a P2P connection with the former network element in the requested IP protocol version is not possible, and then opens a second communication channel to the other network element with the IP Protocol version that can be supported by the former network element.
  • An advantage of the invention is that no additional network elements such as an interworking unit have to be implemented for the method or system according to the invention. Furthermore, there is a continuous communication channel and thus any form of data encryption such as IPSEC (IP security) for the communication channel is possible. Also, the additional time when establishing a connection between the terminal and the former network element with different IP protocol versions only slightly longer than the connection between the terminal and the former network element with the same IP protocol version. The additional resource consumption compared to, for example, pure IPv4 or IPv6 connections is minimal, since a separate communication channel is also set up in this case. Only an additional (temporary) IPv4 address for the duration of the connection is necessary.
  • IP security IP security
  • the invention is based on a shown in a figure
  • FIG. 1 shows a flow chart for an example according to the invention that a terminal registers with the IP protocol version IPv6 and establishes a SIP connection with a former network element that can support the IP protocol version IPv4,
  • FIG. 2 shows a flow chart for a second example according to the invention, in which a first network element which can support the IP protocol version IPv4 connects to a terminal which is in contact with the IP network.
  • Protocol version IPv6 has registered, builds,
  • FIG 1 shows a flow diagram for an example of this invention that a terminal MS is, for example, IPv6, registered with a first IP-Pro ⁇ protocol version and a SIP connection with a former network element MS2 / AS, the another IP protocol Version, for example, IPv4, support, builds.
  • the signaling of the terminal MS or of the former network element MS2 / AS takes place in each case with the IP protocol version used during the registration.
  • the connection setup shown in Figure 1 and Figure 2 largely corresponds to the connection setup between a terminal MS and a former network element MS2 / AS with the same IP protocol version as in 3GPP TS 23.228 (UMTS)
  • the terminal MS accesses the original invitation "INVITE" message or signaling Connection request receives the feedback that the communication partner can not support IP protocol version IPv6. Then a new invitation INVITE process is started and a new invitation message with included IPv4 contact address is sent to another network element GGSN.
  • a second PDP context with the IP protocol is used for the duration of the communication. Version IPv4 built without quality of service requirements If the application requires a "preferred quality of service (QoS)" communication channel, it will be set up as the second PDP context to the IPv4 context, which will receive the same IP address.
  • QoS quality of service
  • the terminal MS sends an invitation message "INVITE" to the former network element MS2 / AS and outputs as
  • a second network element S-CSCF such as a SIP proxy server, a call state control function (Call State Control Function), a gateway network element etc., in which the former network element MS2 / responds.
  • AS is registered, or the former network element MS2 / AS sends, for example via the second network element S-CSCF feedback to the terminal MS, that the former network element MS2 / AS does not support IP protocol version IPv6.
  • the second network element S-CSCF triggers the response or the message that the former network element MS2 / AS can not support the desired IP protocol version, the former network element MS2 / AS can not detect that it is communicating with a terminal MS performs. This ensures that the inventive method can also be used without modification for existing former network elements MS2 / AS, which can support only the IP protocol version IPv4, for example.
  • the terminal MS After receiving the message, the terminal MS sets up a (temporary) second communication channel with the IP protocol version IPv4, which can support the former network element MS2 / AS, to form another network element GGSN.
  • the terminal MS transmits the IPv4 contact address in a new invitation message via the first communication channel.
  • the former network element MS2 / AS responds with its contact address with the message "183 Session Progress".
  • FIG. 2 shows a flow chart for a second example according to the invention.
  • a first network element MS2 / AS which can support the IP protocol version IPv4, wants to establish a service connection with a (dual-stack) terminal MS, which has registered with the IP protocol version IPv6.
  • the terminal MS receives for this purpose an invitation message with an IPv4 contact address.
  • the terminal MS recognizes at the contact address provided in the signaling message from the former network element
  • MS2 / AS that the former network element MS2 / AS is a network element MS2 / AS that wants to communicate with the IP protocol version IPv4.
  • IPv4 communication channel IPv4 communication channel
  • a service connection is understood to mean the connection between a terminal MS and a former network element MS2 / AS for exchanging data of a service.
  • a service can be a call, a message service (SMS (short message), MMS (multimedia message) Message), e-mail (electronic message), etc.), a downloading service of data regarding pictures, multitonal sequences, videos, audio sequences, games, programs, etc., a multimedia service, a location based service, and / or be a similar service.
  • SMS short message
  • MMS multimedia message
  • e-mail electronic message
  • FIG. 3 shows a terminal MS according to the invention for carrying out the method according to the invention.
  • the terminal MS has a transmitting unit S and a receiving unit E for communication with first, second and further network elements S-CSCF, GGSN, MS2 / AS, a processing unit V for setting up a connection via a first communication channel, to a further network element GGSN, which at least can support two IP protocol versions.
  • the processing unit V receives a message from a second network element S-CSCF with the IP protocol
  • the processing unit V then builds a further communication channel for the further network element GGSN which supports the IP protocol version that can support the former network element MS2 / AS, and establishes a service connection to the former network element MS2 / AS.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un système pour établir une liaison de service entre un terminal (MS) qui est compatible avec au moins deux versions de protocole IP, et un premier élément réseau (MS2/AS) qui est compatible avec une seule version de protocole IP, par un réseau de communication. Selon l'invention, le terminal (MS) qui est compatible avec au moins deux versions de protocole IP, établit une liaison, par un premier canal de communication qui est compatible avec une première version de protocole IP, avec un autre élément réseau (GGSN) qui est compatible avec au moins deux versions de protocole IP. Le terminal (MS) est informé de la version de protocole IP avec laquelle le premier élément réseau (MS2/AS) est compatible. Ensuite, le terminal (MS) établit avec l'autre élément réseau (GGSN) un autre canal de communication qui est compatible avec la version de protocole IP avec laquelle le premier élément réseau (MS2/AS) est compatible, afin d'établir la liaison de service avec le premier élément réseau (MS2/AS).
PCT/EP2005/055111 2004-10-15 2005-10-07 Etablissement d'une liaison de service entre un terminal et un premier element reseau ayant des versions de protocole ip differentes WO2006042800A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004050572.1 2004-10-15
DE200410050572 DE102004050572A1 (de) 2004-10-15 2004-10-15 Aufbau einer Dienste-Verbindung zwischen einem Endgerät und einem ersteren Netzelement mit unterschiedlichen IP-Protokoll-Versionen

Publications (1)

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WO2006042800A1 true WO2006042800A1 (fr) 2006-04-27

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WO (1) WO2006042800A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102008048872A1 (de) 2008-09-25 2010-04-08 Siemens Ag Österreich Verfahren und Einrichtung zur bidirektionalen Adressumsetzung in SIP-gesteuerten Datenströmen zwischen IPv4- und IPv6-Datenendgeräten

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004086717A1 (fr) * 2003-03-26 2004-10-07 Siemens Aktiengesellschaft Procede permettant de transmettre des donnees dans un reseau de donnees comportant une pluralite d'ordinateurs

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JP2005086467A (ja) * 2003-09-09 2005-03-31 Hitachi Ltd セッション制御装置、情報通信端末、サーバ、及び端末

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004086717A1 (fr) * 2003-03-26 2004-10-07 Siemens Aktiengesellschaft Procede permettant de transmettre des donnees dans un reseau de donnees comportant une pluralite d'ordinateurs

Non-Patent Citations (3)

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Title
KAWARASAKI Y ET AL: "IPv4/IPv6 SIP interworking methods in dual-stack network", COMMUNICATIONS, 2003. APCC 2003. THE 9TH ASIA-PACIFIC CONFERENCE ON 21-24 SEPT. 2003, PISCATAWAY, NJ, USA,IEEE, vol. 3, 21 September 2003 (2003-09-21), pages 1124 - 1128, XP010687978, ISBN: 0-7803-8114-9 *
MULAHUSIC J ET AL: "SIP Issues in Dual-stack Environments draft-persson-sipping-sip-issue s-dual-stack-00.txt", IETF STANDARD-WORKING-DRAFT, INTERNET ENGINEERING TASK FORCE, IETF, CH, February 2003 (2003-02-01), XP015004821, ISSN: 0000-0004 *
SOININEN: "Transition Scenarios for 3GPP Networks draft-soininen-v6ops-3gpp-case s-00.txt", IETF STANDARD-WORKING-DRAFT, INTERNET ENGINEERING TASK FORCE, IETF, CH, September 2002 (2002-09-01), XP015005331, ISSN: 0000-0004 *

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