EP1493254A2 - Procede de transmission de donnees par des reseaux ip - Google Patents

Procede de transmission de donnees par des reseaux ip

Info

Publication number
EP1493254A2
EP1493254A2 EP03722363A EP03722363A EP1493254A2 EP 1493254 A2 EP1493254 A2 EP 1493254A2 EP 03722363 A EP03722363 A EP 03722363A EP 03722363 A EP03722363 A EP 03722363A EP 1493254 A2 EP1493254 A2 EP 1493254A2
Authority
EP
European Patent Office
Prior art keywords
gprs
terminal
network
information
tunnel
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Withdrawn
Application number
EP03722363A
Other languages
German (de)
English (en)
Inventor
Ramin Mirbaha
Vahid Mirbaha
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.)
fg microtec GmbH
Original Assignee
fg microtec GmbH
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 fg microtec GmbH filed Critical fg microtec GmbH
Publication of EP1493254A2 publication Critical patent/EP1493254A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/02—Inter-networking arrangements

Definitions

  • the invention relates to a method for the transmission of information via IP networks.
  • a method for transmitting information through mobile devices such as mobile telephones or PDAs, which, among other things, have access to conventional radio networks such as GSM or UMTS. If these devices work in a pure IP-based network, such as UMTS or ireless LAN, it makes sense to take up existing standards, on the one hand to achieve a simple transition to existing technologies and on the other hand to enable the user to use them easily.
  • GPRS for GSM and UMTS enable a packet-oriented network based on UMTS and GSM on the last mile.
  • the advantage of the so-called packet-oriented domains is their compatibility with each other and with the Internet.
  • IP-based networks There are a number of applications that have been specially developed for IP-based networks. This approach shows that GPRS will be a very important part of new UMTS networks. Due to the limitations of UMTS in very busy areas such as For example, in the area of a company or university, UMTS will not meet all requirements. So it will be almost impossible for a provider to do all tasks with one UMTS-GSM network to solve. In such areas, e.g. B. Wireless LAN (IEEE802.11 (x), ETSI Hiperlan) are moving in to relieve the UMTS infrastructure. In such a mixed architecture it is important that communication between the different domains is possible.
  • the object of the invention is to provide a method and a device that allow interoperability, regardless of the type of network in which the mobile user is located.
  • the invention consists of two components.
  • One component is arranged on the mobile terminal, information being embedded in IP packets in accordance with the GPRS standard in order to transmit it through an IP tunnel to the second component of the invention.
  • This second component is an IP Serving GPRS Support Node (IP-SGSN) in the IP network, which receives the packets from the tunnel and unpacks them.
  • IP-SGSN IP Serving GPRS Support Node
  • B to send to another GSN, which in turn is responsible for other mobile devices or via which a connection to the Internet is made possible (GGSN).
  • the second component thus has the form of a conventional SGSN for additional GSNs, whereby it is to be regarded as the end of a tunnel in the direction of the mobile terminal.
  • packets of another protocol are packed into an IP packet, so that a complete packet, in this case GPRS packet, can be found in the data area of the IP packet.
  • IP network in particular a wireless LAN and / or a Hiperlan Network
  • IP network a preferably mobile terminal that is connected to the IP network so that IP packets can be exchanged.
  • IP Serving GPRS Support Node in the IP network, a tunnel based on IP packets being built when the connection between the terminal and the IP Serving GPRS Support Node is initialized, the tunneling GPRS information.
  • information is transmitted through the tunnel.
  • the IP Serving GPRS Support Node is connected to other Serving GPRS Support Nodes, Gateway GPRS, Support Nodes and other GPRS Service Nodes (e.g. for SMS) via an IP network, whereby the IP SGSN provides the information depending on the direction of communication unpacked and / or repacked to send the information to the other GPRS service nodes, or packed to send the information through the tunnel to the terminal.
  • connection When the connection is initialized, it is checked whether the mobile terminal may have access to a GPRS network, known security checks taking place based on the GPRS mode. This authentication is also achieved by transmission of tunneled information.
  • a corresponding module as described below, is part of the software. However, it is also conceivable that the software intervenes in the existing authentication methods on the mobile end devices, so that no separate module is required.
  • a broadcast message is preferably sent in order to find an IP serving GPRS support node in the IP network through which a tunnel is established.
  • an HLR service which is based both on the IP address of the terminal and on other GPRS-typical information (which is stored on the mobile terminal, for example in the form of a Subscriber Identity Module -SIM- authorization) and / or localization of the terminal is permitted.
  • Such an HLR service has the task of determining or storing where a mobile terminal is and to whom it or which telephone number is assigned.
  • the network provider uses the HLR service to assign user and / or device-specific rights, which due to the special nature of this method can also be used in non-GSM / UMTS networks.
  • a handover can take place both at the IP level and at the GPRS level.
  • the form of the handover takes place depending on the network in which the end device is located or which network types are switched. If the mobile device z. B. remain in the area of a wireless network, the hand over is preferably carried out on an IP basis. If, on the other hand, the domains are changed, the handover can be based on GPRS.
  • this application uses a mechanism that predicts the future development of the connection quality of the various network types.
  • the hand over is optimized in time from one network type to another.
  • the information is encrypted.
  • Ipsec is used at the IP level.
  • other encryption methods it is also conceivable to use other encryption methods. Several methods can also be used in parallel.
  • a device is part of the invention, which is arranged in the IP network and takes over the function of an IP SGSN there.
  • This is a device for providing GPRS services in an IP network, with means that enable a known functionality of a serving GPRS support node in a GPRS and / or UMTS network.
  • This complete compatibility with known SGSN or GGSN (Gateway GSN) enables communication with existing networks without any great technical effort.
  • the special feature of the device is that it communicates with the preferably mobile terminals on the basis of an IP tunnel, GPRS packets being transmitted through the IP tunnel.
  • the IP SGSN can be used in any IP-based network. It is designed in such a way that it can establish connections to SGSN's, GGSN's, HLR's, CGF's in the UMTS / GSM home network. Seen from the UMTS network, it is therefore a normal "3G" SGSN, as specified in the 3GPP documents.
  • the IP SGSN can route different services to different servers. (e.g. Internet and e-mail to the "local" proxy and mail server, or other GPRS services to GGSN of the UMTS / GSM provider).
  • servers e.g. Internet and e-mail to the "local" proxy and mail server, or other GPRS services to GGSN of the UMTS / GSM provider.
  • the specific HLR and CGF are not essential
  • HLR in the IP based network. He has a list of everyone
  • HLRs from UMTS / GSM providers that have concluded a roaming agreement with each other.
  • the IP SGSN asks the adapted HLR instead of another.
  • the adapted HLR decides whether the packet should be sent from the IP SGSN to an HLR, and if so, which one.
  • the provider can also manage its own subscriber list in the customized HLR. Furthermore, the provider can use this HLR
  • the adapted CGF also works transparently like a well-known CGF, but in the IP-based network. This makes it possible to collect information that enables the user to calculate the costs or fees. Instead of establishing a connection to a conventional CFG, the IP SGSN establishes a connection to the adapted CGF. The CGF modified in this way can forward the information to the provider or carry out its own calculations.
  • the device has means that provide gateway functionality, in particular the routing of information into other networks.
  • gateway functionality in particular the routing of information into other networks.
  • it is an IP-GGSN.
  • Corresponding systems are known from the other networks.
  • the device can also take over the functionality of an HLR. It should be mentioned here in particular that means are available which allow the mapping of an IP address in an HLR. Furthermore, means are available that allow hand over at the different protocol levels and protocols, as well as means that enable encryption. Other components of the device are means that can receive broadcast messages from a terminal in order to set up a GPRS tunnel connection. After receiving such a packet, a response is sent to the mobile terminal, from which the mobile terminal can see that an IP SGSN is in the network.
  • Another component of the invention is a terminal that is able to communicate with the IP SGSN through a tunnel connection.
  • conventional end devices such as PDAs or mobile telephones, do not have such functionalities. Rather, it is necessary to adapt the software and possibly the hardware in order to enable such communication.
  • these modified end devices have means that enable an exchange of information via GPRS through an IP tunnel. The prerequisite is, of course, that an appropriate IP SGSN is available for communication.
  • the device is a device that supports several radio standards.
  • the device can preferably support both wireless LAN and UMTS or GSM / GPRS.
  • IP networks Because of the use in IP networks, known methods for address conversion should be implemented. This allows greater flexibility when used in networks that e.g. B. support different IP versions. Address conversion should be allowed, especially from IPv4 to IPv ⁇ and vice versa, and NAT or masking of addresses.
  • means are available which allow the information to be encrypted. Encryption options have already been discussed above. Especially during initialization, it is important that means are available that enable authentication in the GPRS network. One access the HLR is preferably carried out here. This approach makes it possible to clearly assign costs.
  • a software layer is available which enables the described functionality, which preferably has access to an IP stack. By tapping or redirecting the information in the IP stack that is used in GPRS or. UMTS terminals are available, a simple implementation can be done.
  • Another component of the invention is software that implements the functionality described on a conventional terminal. It should be noted that the protection should also extend to a data carrier with such software.
  • Fig. 1 shows a mobile terminal that supports 3 bands, namely UMTS, GSM and WLAN, which are each used in different domains, the mobile terminal being connected to SGSN via base stations, which in turn establish the connection to different domains via GGSN;
  • Fig. 2 shows a hierarchy starting with terminals (UE) via base stations (UTRAN), (serving) radio network controller, SGSN, GGSN, and HLR
  • FIG. 3 shows a logical architecture of a (UMTS) GPRS network
  • Fig. 4 user levels for GPRS over GSM
  • Fig. 5 user levels for GPRS over UMTS
  • Fig. 6 user levels for GPRS over IP
  • Fig. 7 control levels for GPRS over GSM
  • Fig. 8 control levels for GPRS over UMTS
  • Fig. 9 control levels for GPRS over IP
  • Fig. 10 Structure of the software module, which is arranged on a mobile terminal.
  • Fig. 1 shows a mobile terminal that supports 3 bands, namely UMTS, GSM and WLAN, which are each used in different domains.
  • the mobile device moves through the networks, roaming via GPRS.
  • appropriate gateways GGSN
  • the IP SGSN (fm SGSN) according to the invention, which communicates with the terminal device via an IP tunnel, is used in the network in which the WLAN is used.
  • the information is transported via the SGSN and GGSN.
  • the hierarchy starts with a terminal (UE), which is connected to SGSN, GGSN by radio via base stations (UTRAN), via a serving) radio network controller (SRNC).
  • UE terminal
  • GGSN gateways
  • SRNC radio network controller
  • the SGSN and GGSN have access to the HLR.
  • the radio network controller has the task of distributing the bandwidth and frequencies or timeslots.
  • FIG. 3 shows a logical architecture of a GPRS network, as is known from [13]. From this it can be seen that the network essentially consists of the SGSN and the GGSN, which on the one hand control the connection of the mobile end devices in the domains and on the other hand enable the connection to other networks. There can be several GGSNs in a network that are connected to each other.
  • the SMS-GMSC and SMS-IWMSC are units that are used for SMS exchange. Further details can be found in [13].
  • FIGS. 4, 5 and 6 show the user levels of the known GPRS via GSM / UMTS protocol and of the GPRS protocol tunneled via IP.
  • the tunneled protocol GTP-U in FIG. 6 is used both between the GGSN and between the terminal. This is used to transport the IP packets. Only the GTP-U protocol on a UDP / IP layer is used. In contrast to UMTS, there is no need for base stations that additionally communicate with the end device via the Packet Data Convergence Protocol. There is therefore a direct tunnel to the terminal.
  • the literature [20] For further details, reference is made to the literature [20].
  • FIGS 7, 8 and 9 show the differences at the control level.
  • RANAP Protocoll
  • This protocol encapsulates and transports Information and signals at higher levels.
  • the levels below RANAP are described in [14].
  • SCCP should be used to transport RANAP information. This should conform to the ITU-T white book.
  • the present invention is essentially based on one
  • Both the client and the server must support GPRS over IP.
  • the client's modules support a number of new standards such as (3GPP specs, IETF RFCs) or drafts, which are not part of the IP stack, but are based on it.
  • the modular approach has the advantage that simple adaptation is possible.
  • the structure of the client can be seen in FIG. 10.
  • the authenticator is responsible for the management of various information such as passwords, public and private keys, certificates and USIM. It also includes authentication methods. For GPRS over IP based networks, authentication according to the GSM and UMTS standards as disclosed in [10] and [25] is necessary.
  • the security agent is responsible for the security and integrity of the connection. It uses encryption methods and packet-based filters and firewall mechanisms. For GPRS over IP based networks, IPSec should be supported with IKE (Internet Key Exchange, [28]).
  • IKE Internet Key Exchange
  • the tunnel manager is responsible for tunnel management and handover of tunnel endpoints.
  • GTP ([22]) should be supported for GPRS over IP based networks.
  • the address converter has the task of address conversion, usually from Ipv4 to Ipv6 ([30]) and vice versa. This is necessary because the stacks of the end devices only support version 4. Older networks are also geared towards the older versions. In contrast, newer networks, such as UMTS, will be based on the newer versions. In particular, if handover takes place between the different networks, conversion is necessary. Support for masking or address translation is also of interest ([29]).
  • GSM 01.61 General Packet Radio Service (GPRS); GPRS ciphering algorithm requirements
  • GSM 03.40 Technical Realization of the Short Message
  • SMS Point-to-poin
  • PP Point-to-poin
  • GSM 04.08 Mobile radio interface layer 3 specification
  • GSM 04.60 General Packet Radio Service (GPRS);
  • MS Mobile Station
  • BSS Base Station System
  • MS-SGSN Mobile Station - Serving GPRS Support Node
  • Logical Link Control (LLC) layer specification [6] GSM 04.65, General Packet Radio Service (GPRS);
  • MS Mobile Station
  • GSM Global System for Mobile communications
  • GPRS General Packet Radio Service
  • BSS Station System
  • GSM Global System for Mobile communications
  • GPRS General Packet Radio Service
  • BSS Station System
  • SMS Message Service
  • 3GPP TS 29.060 v4.2.0 General Packet Radio Service (GPRS); GPRS Tunneling Protocol (GTP) across the Gn and Gp interface
  • GPRS General Packet Radio Service
  • GTP GPRS Tunneling Protocol
  • PLMN Public Land Mobile Network
  • PS Switched

Landscapes

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

Abstract

L'invention concerne deux composants. Le premier composant est placé sur le terminal mobile, les données correspondant au standard GPRS étant transmises par paquets IP au deuxième composant de l'invention via un tunnel IP. Ce deuxième composant de l'invention est un noeud support GPRS de desserte IP (IP-SGSN) du réseau IP qui reçoit les paquets provenant du tunnel et les déballe pour ensuite les envoyer, par exemple, à un autre GSN qui, à son tour, est responsable d'autres terminaux mobiles ou permet une liaison avec l'internet (GGSN). Pour d'autres GSN, le deuxième composant a ainsi de l'extérieur la forme d'un SGSN classique et est considéré, en direction du terminal mobile, comme l'extrémité d'un tunnel.
EP03722363A 2002-04-05 2003-03-27 Procede de transmission de donnees par des reseaux ip Withdrawn EP1493254A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10215151A DE10215151A1 (de) 2002-04-05 2002-04-05 Verfahren zur Übertragung von Informationen über IP-Netzwerke
DE10215151 2002-04-05
PCT/EP2003/003203 WO2003085920A2 (fr) 2002-04-05 2003-03-27 Procede de transmission de donnees par des reseaux ip

Publications (1)

Publication Number Publication Date
EP1493254A2 true EP1493254A2 (fr) 2005-01-05

Family

ID=28051145

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03722363A Withdrawn EP1493254A2 (fr) 2002-04-05 2003-03-27 Procede de transmission de donnees par des reseaux ip

Country Status (6)

Country Link
US (1) US20050169237A1 (fr)
EP (1) EP1493254A2 (fr)
CN (1) CN100591032C (fr)
AU (1) AU2003229577A1 (fr)
DE (1) DE10215151A1 (fr)
WO (1) WO2003085920A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004004681A1 (de) * 2004-01-29 2005-08-25 Deutsche Telekom Ag Verfahren zum Durchführen eines Handovers in IP-Basierten Funknetzen
DE102004008696A1 (de) * 2004-02-23 2005-09-08 Giesecke & Devrient Gmbh Verfahren zur Gewährung eines Zugangs zu einem Netzwerk
JP5108786B2 (ja) * 2006-12-26 2012-12-26 富士通株式会社 無線通信方法並びに無線制御局及び無線基地局
EP2176967A4 (fr) * 2007-07-14 2013-08-14 Tatara Systems Inc Procédé et appareil pour la prise en charge de femtocellules sip/ims
CN102291699A (zh) * 2011-09-14 2011-12-21 深圳市金立通信设备有限公司 一种ip信息与sms短消息结合的手机短信发送系统及方法
CN103945054A (zh) * 2014-03-14 2014-07-23 上海天奕达电子科技有限公司 一种短信发送的方法及移动终端

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6937566B1 (en) * 1997-07-25 2005-08-30 Telefonaktiebolaget Lm Ericsson (Publ) Dynamic quality of service reservation in a mobile communications network
US6608832B2 (en) * 1997-09-25 2003-08-19 Telefonaktiebolaget Lm Ericsson Common access between a mobile communications network and an external network with selectable packet-switched and circuit-switched and circuit-switched services
DE19742681C2 (de) * 1997-09-26 2003-03-06 Ericsson Telefon Ab L M GPRS-Teilnehmerauswahl von mehreren Internet-Dienstanbietern
FI110987B (fi) * 1998-03-31 2003-04-30 Nokia Corp Menetelmä tiedonsiirtovirtausten kytkemiseksi
US8516055B2 (en) * 1998-05-29 2013-08-20 Research In Motion Limited System and method for pushing information from a host system to a mobile data communication device in a wireless data network
DE19832290B4 (de) * 1998-07-17 2011-12-08 Telefonaktiebolaget Lm Ericsson (Publ) Kommunikationssystem und Verfahren zum Aufbauen von Verbindungen zwischen Terminals eines ersten und eines zweiten Kommunikationsnetzes
US7023820B2 (en) * 2000-12-28 2006-04-04 Nokia, Inc. Method and apparatus for communicating data in a GPRS network based on a plurality of traffic classes
FI19992593A (fi) * 1999-12-02 2001-06-03 Nokia Networks Oy Puheluiden reititys tietoliikennejärjestelmässä
DE10007012B4 (de) * 2000-02-16 2010-07-01 Ipcom Gmbh & Co. Kg Verfahren zur bidirektionalen Datenübertragung über eine paketorientierte Netzwerkeinrichtung
DE10025270C2 (de) * 2000-05-22 2002-12-12 Siemens Ag Verfahren und System zum Anmelden einer Teilnehmer-Station an der Paketdienst-Dienstezustands-Steuerfunktion CSCF in einem Kommunikationssystem
US6621793B2 (en) * 2000-05-22 2003-09-16 Telefonaktiebolaget Lm Ericsson (Publ) Application influenced policy
FI20001544A (fi) * 2000-06-29 2001-12-30 Nokia Networks Oy Poikkeavan päätelaitteen tukeminen verkossa
US20020101859A1 (en) * 2000-09-12 2002-08-01 Maclean Ian B. Communicating between nodes in different wireless networks
DE10046344C2 (de) * 2000-09-19 2003-07-24 Siemens Ag Zugangsnetz und Verfahren zu dessen Betrieb
US20020136226A1 (en) * 2001-03-26 2002-09-26 Bluesocket, Inc. Methods and systems for enabling seamless roaming of mobile devices among wireless networks
AU2002302956A1 (en) * 2001-05-16 2002-11-25 Adjungo Networks Ltd. Access to plmn networks for non-plmn devices
US7061894B2 (en) * 2001-08-07 2006-06-13 Industrial Technology Research Institute System and method for providing voice communications for radio network
FI114365B (fi) * 2001-08-31 2004-09-30 First Hop Oy Menetelmä langattomien verkkojen suorituskyvyn optimoimiseksi
US6891842B2 (en) * 2001-09-21 2005-05-10 Nokia Corporation System and method for enabling mobile edge services
US7107066B2 (en) * 2001-10-23 2006-09-12 Telefonaktiebolaget Lm Ericsson (Publ) Multicast support in packet switched wireless networks
FI20012339A0 (fi) * 2001-11-29 2001-11-29 Stonesoft Corp Palomuurien välillä siirtyvien yhteyksien käsittely
US7408906B2 (en) * 2002-02-20 2008-08-05 Ericsson Inc. Mobile data communications apparatus, methods and computer program products implementing cellular wireless data communications via a wireless local area network
US7489672B2 (en) * 2002-03-26 2009-02-10 Interdigital Technology Corp. RLAN wireless telecommunication system with RAN IP gateway and methods

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03085920A2 *

Also Published As

Publication number Publication date
DE10215151A1 (de) 2003-10-16
US20050169237A1 (en) 2005-08-04
CN1647465A (zh) 2005-07-27
AU2003229577A1 (en) 2003-10-20
CN100591032C (zh) 2010-02-17
WO2003085920A2 (fr) 2003-10-16
WO2003085920A3 (fr) 2004-03-11
AU2003229577A8 (en) 2003-10-20

Similar Documents

Publication Publication Date Title
EP1316230B1 (fr) Architecture generique d'un reseau local sans fil (wlan)
DE102006015033B4 (de) Mobile Station als Gateway für mobile Endgeräte zu einem Zugangsnetz sowie Verfahren zur Netzanmeldung der mobilen Station und der mobilen Endgeräte
EP1761082B1 (fr) Procédé et système pour connecter un deuxième réseau de communication avec une noeud d'accès à un premièr réseau de communication avec un noeud de contact
DE60208382T2 (de) Hybrides UMTS/WLAN Telekommunikationssystem
EP1391081B1 (fr) Systeme radio mobile heterogene
DE60121626T2 (de) Zugriffssystem für ein Zugriffsnetzwerk
EP1529374B2 (fr) Procede et systeme d'authentification gsm pour une itinerance wlan
DE60308620T2 (de) Roaming-Dienst, der mehrere Anbieter für mobile Datenkommunikation abdeckt
DE112008003065B4 (de) Ad-hoc-Kommunikations-Funkmodul, Ad-hoc-Kommunikationseinrichtung und Verfahren zum Steuern eines Ad-hoc-Kommunikations-Funkmoduls
DE10131561A1 (de) Verfahren zur Übertragung von Anwendungspaketdaten
DE202006020961U1 (de) Zugangspunkt für Mobilkommunikationsnetz
KR101011885B1 (ko) 무선랜 타이트 커플링 해법
KR20020014512A (ko) 통신시스템에서의 망요소 통합 방법
US20060179474A1 (en) Authentication of a wlan connection using gprs/umts infrastructure
DE60312184T2 (de) Verfahren eines gateways zum auswählen eines kanals zur übertragung von datenpaketen
WO2007051793A1 (fr) Forçage de l'ip mobile proxy (pmip) a la place de l'ip mobile client (cmip) de maniere specifique a l'abonne
CN102843666B (zh) 分组数据网关和移动节点
EP1493254A2 (fr) Procede de transmission de donnees par des reseaux ip
EP1925127B1 (fr) Maintien de connexion entre un dispositif terminal et un service
US20110078764A1 (en) Tight coupling signaling connection management for coupling a wireless network with a cellular network
EP1563691B1 (fr) Procede et dispositif de mise en oeuvre d'une voie de connexion vers un reseau de telephonie mobile et terminal de communication destine a cet effet
WO2004043014A2 (fr) Procede de transmission de donnees
EP1659740B1 (fr) Solution de couplage serré pour un réseau local sans fil
DE602004005582T2 (de) Paketbasiertes Kommunikationssystem und Verfahren
EP1322089A2 (fr) Dispositifs et système pour rattacher dynamiquement, au niveau du protocole, des stations mobiles sans fil, à des réseaux utilisant le protocole IP

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20040925

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MIRBAHA, VAHID

Inventor name: MIRBAHA, RAMIN

17Q First examination report despatched

Effective date: 20070516

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20121114