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WO2003065660A1 - Procede servant a creer une interaction entre des terminaux de reseaux de telecommunication et un systeme associe - Google Patents

Procede servant a creer une interaction entre des terminaux de reseaux de telecommunication et un systeme associe Download PDF

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Publication number
WO2003065660A1
WO2003065660A1 PCT/EP2003/000839 EP0300839W WO03065660A1 WO 2003065660 A1 WO2003065660 A1 WO 2003065660A1 EP 0300839 W EP0300839 W EP 0300839W WO 03065660 A1 WO03065660 A1 WO 03065660A1
Authority
WO
WIPO (PCT)
Prior art keywords
network
signalling
call
terminal
hlr
Prior art date
Application number
PCT/EP2003/000839
Other languages
English (en)
Inventor
Ciro Gaglione
Original Assignee
Telecom Italia S.P.A.
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 Telecom Italia S.P.A. filed Critical Telecom Italia S.P.A.
Priority to BR0302901-8A priority Critical patent/BR0302901A/pt
Publication of WO2003065660A1 publication Critical patent/WO2003065660A1/fr

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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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/06—Interfaces between hierarchically different network devices between gateways and public network devices

Definitions

  • the present invention relates to communication networks and it was developed with particular attention to the possible application in achieving the interaction between packet switched networks in IP (Internet Protocol) technology and mobile networks in GSM/GPRS technology for supporting integrated voice-data services towards mobile terminals .
  • IP Internet Protocol
  • the invention was developed with particular attention to operators of mobile radio networks for telecommunications provided with their own geographic network in IP technology or able to exploit a geographic network infrastructure in IP technology of a third party, such as a so-called Network Service Provider or NSP.
  • NSP Network Service Provider
  • the user domain is composed by the terminals employed by users to exploit the services offered by the network.
  • terminals employed by users to exploit the services offered by the network.
  • the network domain in turn is subdivided in two different domains: the traditional domain or circuit switched network for the mobile network (for instance GSM) and the packet switched network or network in IP technology.
  • the elements belonging to the domain of the traditional technology network are in turn subdivided - still referring by way of example to the GSM standard - into the BSS (Base Station Sub-system) or radio part and NSS (Network Switching Sub-system) or core network.
  • BSS Base Station Sub-system
  • NSS Network Switching Sub-system
  • the BSS is the set of functional elements that provide for the radio aspects of the systems, of the radio coverage of one or more cells and of the communication with the mobile terminals located within them.
  • the BSS comprises two functional units, respectively called BTS (Base Transceiver Station) and BSC (or Base Station Controller) .
  • the NSS is the set of functional elements, switches, databases, etc., that allow to manage user mobility and to control calls and support supplementary services.
  • the most important elements belonging to the NSS are constituted by the MSC (Mobile Services Switching Centre) , by the VLR
  • the MSC element essentially corresponds to the switching centre for mobile radio services and it has two fundamental tasks: managing mobility and routing calls for the served area.
  • the VLR corresponds in practice to a database associated to each MSC in which are temporarily stored the information of the mobile terminals in relation to the area served by the MSC whereto it is associated.
  • the HLR is the central database that permanently stores both the users' subscription data (known as static data) , and data that may vary as a result of the users' actions, such as moves or activation of supplementary services (the latter data being known as dynamic data) .
  • static data the users' subscription data
  • dynamic data the data that may vary as a result of the users' actions, such as moves or activation of supplementary services
  • Figure 1 of the accompanying drawings exemplifies, as an immediate reference, the procedures used to perform a call between a fixed telephone and a mobile telephone with reference to a transport network in traditional technology, for example TDM SS7 voice and data, based on the use of the three protocols currently called MAP (Mobility Application Part) , CAP (Camel Application Part) and ISUP (ISDN User Application Part) .
  • MAP Mobility Application Part
  • CAP Content Application Part
  • ISUP ISDN User Application Part
  • the fixed network user A dials the number (MSISDN, acronym for Mobile Station ISDN Number in E.164 format) of the mobile terminal B.
  • MSISDN acronym for Mobile Station ISDN Number in E.164 format
  • the number of the mobile terminal B is analysed by the involved switching centres (PSTN/ISDN) .
  • the switching centres interpret the number, comprehending the fact that they have to route the call to the so-called GMSC, i.e. the gateway MSC (GMSC) of the mobile network PLMN whereto the terminal B belongs.
  • GMSC gateway MSC
  • the MSC receives a call set-up message, in ISUP signalling (see the terminology note provided above) containing the MSISDN number.
  • This number is analysed determining the HLR on which the mobile terminal B is registered and sending a MAP signalling message to it to locate the area of the PLMN cellular network where the terminal B is positioned.
  • the HLR in question identifies, based on the MSISDN number, the IMSI (International Mobile Subscribe Identity) identifier associated to the terminal B - more specifically, to its SIM - and the VLR whereon the mobile terminal B is temporarily registered, then sending, also in MAP signalling, a request for the MSRN number (Mobile Station Roaming Number in E.164 format) which indicates the localisation area of the mobile terminal B and hence of the related MSC whereon the call is to be terminated.
  • IMSI International Mobile Subscribe Identity
  • the HLR receives the MSRN number and provides it, also through the MAP signalling, to the gateway GMSC.
  • the latter analyses the MSRN number and routes the call (propagating the so-called call SET-UP) to the MSC that is temporarily responsible for the mobile terminal B, carrying out the call set-up step through ISUP signalling.
  • the connection is extended, also through any transport network in TDM technology, to the MSC-VLR that controls the localisation area where the mobile terminal indicated as B is present.
  • the MSC-VLR sets up the call through the BSS radio interface, carrying out the normal paging procedures provided for this purpose.
  • the calling terminal A is a Personal Computer accessing the network, for instance, via modem and ITSp, i.e. a so-called Internet Telephony Service Provider.
  • the fixed network user A in this case is equipped with a multimedia Personal Computer provided with a Client VoiP functionality able to encode and packetise voice, authenticate and route the call by means of a corresponding control module (for example a so-called Gate Keeper or GK in the architecture according to the ITU H.323 standard) .
  • a corresponding control module for example a so-called Gate Keeper or GK in the architecture according to the ITU H.323 standard
  • the calling terminal A dials, in this case as well, the number (in E.164 format) of the ITSP for connection to the Internet . Said number is analysed by the involved PSTN/ISDN switching centres, which interpret it as relating to a data call and route the call towards the nearest PoP of the provider's NAS system. After completing authentication procedures, the user accesses the Internet, said step being based on the ISDN access signalling.
  • the Client VoiP functionality available on the Personal Computer then dials the MSISDN number, sending in IP signalling a request for the IP address whereon the call is to be routed.
  • the aforesaid control module Based on the MSISDN number, the aforesaid control module provides the IP address of one of the vocal gateways G ; the latter serves a dual purpose:
  • the aim of the present invention therefore is to provide an enhanced solution to allow a calling terminal, such as a telephone terminal configured with a module (VoiP) for voice transmission on a transport network IP by means of a respective application server (AS) , to call in voice and/or data connection a terminal connected on a mobile telephony network (PLMN) provided with modules of the MSC (Mobile Services Switching Centre) , VLR (Visitor Location Register) and HLR (Home Location Register) type.
  • MSC Mobile Services Switching Centre
  • VLR Visitor Location Register
  • HLR Home Location Register
  • the invention also relates to the associated system.
  • the solution according to the invention allows to connect a calling terminal connected to a network with IP technology with a called terminal connected on a circuit switched mobile telephony network, keeping substantially free the signalling function of the circuit switched mobile telephony network; this is because the call is routed directly through said network in IP technology.
  • the solution according to the invention exploits the fact that the application server available at the packet domain is able to: authenticate the calling user, through an authentication server, locate the user to whom the call is destined by communicating with the databases of the mobile network
  • HLR Home Location Register
  • the signalling gateways allow interworking between the traditional network and the IP technology network in regard to localisation signalling (Mobility Application Part or MAP) , whilst voice gateways are able to handle that the signalling for controlling the call and setting the call up on IP, convert it towards the traditional domain and covert voice between the two domains and vice versa.
  • MAP Localisation Signalling
  • FIG. 4 shows in greater detail the procedures for setting up the call according to the criteria whereto reference is made in Figure 3.
  • the caller A dials through his/her functionality VoiP (in particular by means of the module called CVS or Client VoiP SIP) the MSISDN number of the called party B.
  • VoiP in particular by means of the module called CVS or Client VoiP SIP
  • said number is sent to the switching centres PSTN/ISDN involved to be analysed.
  • said number is instead routed directly on the IP network, directing it to the application server (AS) whereto the calling user A is connected.
  • AS application server
  • this takes place by causing, after the authentication step (through an authentication element) , the user A to send a call SETUP message - for example in SIP signalling - towards the application server AS.
  • the application server AS After receiving the call set-up, the application server AS starts the localisation step.
  • the application server analyses the MSISDN number, determining the signalling gateway SG that allows it to communicate with the HLR whereon the mobile terminal B is registered and sending it a MAP signalling message carried on IP network. All this to localise in which area of the cellular network PLMN the called terminal B is situated.
  • the involved HLR identifies the IMSI identifier (International Mobile Subscriber Identity) of the called terminal B, determining the VLR whereon the terminal B itself is temporarily registered.
  • IMSI identifier International Mobile Subscriber Identity
  • MAP signalling carried on IP, a request for the MSRN (Mobile Station Roaming Number) is sent (also through the signalling gateway) .
  • MSRN Mobile Station Roaming Number
  • the MSRN number identifies the area of localisation of the called terminal B and hence the related MSC whereon the call is to be terminated.
  • the HLR receives the MSRN number and provides it, also through the MAP signalling carried on IP, to the application server.
  • the latter analyses the MSRN number and selects, in relation to the MSC whereon the call is to be terminated, the vocal gateway VG whereon the call is to be routed. This takes place by means of propagation of the call set-up in SIP signalling.
  • the vocal gateway VG converts the signalling from the

Landscapes

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

Abstract

Un terminal appelant (A) conçu pour effectuer une transmission sur un réseau à protocole Internet est connecté avec un terminal appelé (B) connecté sur un réseau téléphonique mobile (PLMN) comportant des modules de type MSC, VLR et HLR. Ce réseau à protocole Internet comporte des modules de passerelle de signalisation (SG) pouvant communiquer avec le HLR du réseau téléphonique mobile, ainsi que des modules de passerelle vocale VG pouvant convertir le signal en voix et la signalisation associée du format de transport dans le réseau à protocole Internet en un format compatible avec le MSC du réseau téléphonique mobile. Le terminal appelant (A) génère un message d'appel acheminé en direction du serveur d'application (AS). On détermine la passerelle de signalisation (SG) capable de communiquer avec le HLR sur lequel le terminal appelé (B) est aligné, ce qui localise la zone dudit réseau téléphonique cellulaire mobile dans laquelle est situé ce terminal appelé (B). On sélectionne ensuite la passerelle vocale (VG) dans un MSC correspondant afin d'établir l'appel par connexion du terminal appelant (A) et du terminal mobile appelé (B) par l'intermédiaire du MSC-VLR identifié.
PCT/EP2003/000839 2002-01-31 2003-01-28 Procede servant a creer une interaction entre des terminaux de reseaux de telecommunication et un systeme associe WO2003065660A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR0302901-8A BR0302901A (pt) 2002-01-31 2003-01-28 Método para atingir a interação entre terminais de redes de telecomunicação e sistema relacionado

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO02A000088 2002-01-31
IT2002TO000088A ITTO20020088A1 (it) 2002-01-31 2002-01-31 ,,procedimento per realizzare l'interazione fra terminali di reti di telecomunicazioni e relativo sistema,,.

Publications (1)

Publication Number Publication Date
WO2003065660A1 true WO2003065660A1 (fr) 2003-08-07

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PCT/EP2003/000839 WO2003065660A1 (fr) 2002-01-31 2003-01-28 Procede servant a creer une interaction entre des terminaux de reseaux de telecommunication et un systeme associe

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BR (1) BR0302901A (fr)
IT (1) ITTO20020088A1 (fr)
WO (1) WO2003065660A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005110006A2 (fr) * 2004-05-14 2005-11-24 Virtualiti Holdings Ltd. Procede et dispositif lies a un reseau de transmission
EP1730883A2 (fr) * 2004-02-23 2006-12-13 Roamware, Inc. Protocole communication vocale sur l'internet integre pour le re acheminement d'appels
EP1843609A2 (fr) * 2006-04-04 2007-10-10 Bridgeport Networks, Inc. Conversion de données
CN100370870C (zh) * 2003-12-31 2008-02-20 华为技术有限公司 一种获取不同公共陆地移动网内信息的方法及其系统
EP1892907A1 (fr) * 2006-07-31 2008-02-27 Hewlett-Packard Development Company, L.P. Passerelle de signalisation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000033518A2 (fr) * 1998-12-03 2000-06-08 Telefonaktiebolaget Lm Ericsson (Publ) Systeme et procede de mise en oeuvre de commutation mobile et de services de lignes collectives dans un reseau a commutation par paquets
WO2000079807A1 (fr) * 1999-06-17 2000-12-28 Nortel Networks Corporation Passerelle de signalisation
EP1073291A2 (fr) * 1999-07-26 2001-01-31 Siemens Aktiengesellschaft Procédé et système de communication pour traiter un service de données en paquets

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000033518A2 (fr) * 1998-12-03 2000-06-08 Telefonaktiebolaget Lm Ericsson (Publ) Systeme et procede de mise en oeuvre de commutation mobile et de services de lignes collectives dans un reseau a commutation par paquets
WO2000079807A1 (fr) * 1999-06-17 2000-12-28 Nortel Networks Corporation Passerelle de signalisation
EP1073291A2 (fr) * 1999-07-26 2001-01-31 Siemens Aktiengesellschaft Procédé et système de communication pour traiter un service de données en paquets

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100370870C (zh) * 2003-12-31 2008-02-20 华为技术有限公司 一种获取不同公共陆地移动网内信息的方法及其系统
EP1730883A2 (fr) * 2004-02-23 2006-12-13 Roamware, Inc. Protocole communication vocale sur l'internet integre pour le re acheminement d'appels
EP1730883A4 (fr) * 2004-02-23 2007-04-04 Roamware Inc Protocole communication vocale sur l'internet integre pour le re acheminement d'appels
WO2005110006A2 (fr) * 2004-05-14 2005-11-24 Virtualiti Holdings Ltd. Procede et dispositif lies a un reseau de transmission
WO2005110006A3 (fr) * 2004-05-14 2006-01-05 Virtualiti Holdings Procede et dispositif lies a un reseau de transmission
EP1843609A2 (fr) * 2006-04-04 2007-10-10 Bridgeport Networks, Inc. Conversion de données
EP1843609A3 (fr) * 2006-04-04 2009-03-11 Bridgeport Networks, Inc. Conversion de données
EP1892907A1 (fr) * 2006-07-31 2008-02-27 Hewlett-Packard Development Company, L.P. Passerelle de signalisation
US7969969B2 (en) 2006-07-31 2011-06-28 Hewlett-Packard Development Company, L.P. Signalling gateway

Also Published As

Publication number Publication date
ITTO20020088A1 (it) 2003-07-31
BR0302901A (pt) 2004-07-06
ITTO20020088A0 (it) 2002-01-31

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