WO2009004109A1 - Positionnement et mise à jour de la localisation des utilisateurs dans un réseau domestique d'un système téléphonique mobile formé par un réseau d'infrastructure multimédia - Google Patents

Positionnement et mise à jour de la localisation des utilisateurs dans un réseau domestique d'un système téléphonique mobile formé par un réseau d'infrastructure multimédia Download PDF

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Publication number
WO2009004109A1
WO2009004109A1 PCT/FI2007/050303 FI2007050303W WO2009004109A1 WO 2009004109 A1 WO2009004109 A1 WO 2009004109A1 FI 2007050303 W FI2007050303 W FI 2007050303W WO 2009004109 A1 WO2009004109 A1 WO 2009004109A1
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WO
WIPO (PCT)
Prior art keywords
network
user
core network
multimedia core
mobile phone
Prior art date
Application number
PCT/FI2007/050303
Other languages
English (en)
Inventor
Markku Rautiola
Heikki Oukka
Original Assignee
Markku Rautiola
Heikki Oukka
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 Markku Rautiola, Heikki Oukka filed Critical Markku Rautiola
Priority to PCT/FI2007/050303 priority Critical patent/WO2009004109A1/fr
Publication of WO2009004109A1 publication Critical patent/WO2009004109A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/10—Mobility data transfer between location register and external networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H04W88/182—Network node acting on behalf of an other network entity, e.g. proxy

Definitions

  • This invention relates to a system and a method for determining and updating the location of users in a home network of a public mobile phone system formed by a multimedia core network by means of a mobility proxy (MPRX) according to the present invention.
  • MPRX mobility proxy
  • Virtual mobile communication operation has developed from mobile communication service operation.
  • service providers operated as retail dealers of mobile network operators (MNO). Their selection of services was initially very limited, but recently it has expanded and nowadays several service providers have their own apparatuses for operating quite independently within a network of a host network operator by productizing and pricing their services and also by producing new, competing services. For operation they may have their own SIM card (subscriber identity module) and their own mobile switching centre (MSC), as well as a home location register (HLR).
  • SIM card subscriber identity module
  • MSC mobile switching centre
  • HLR home location register
  • These service providers are internationally referred to as “enhanced service providers” (ESP). However, they are still service providers, not licensed network operators.
  • ESPs are not far from virtual mobile network operators (MVNO), which use their own mobile switching centre for connecting calls, connect their network to other telecommunication networks and have connection contracts with them.
  • MVNO virtual mobile network operators
  • a phone call between subscribers of a mobile network operator and a service provider is operationally and expense-wise the same as between the subscribers of the mobile network operator or between the subscribers of the service provider.
  • a virtual mobile network operator with its own wiring is a separate network operator competing with the host network, whose phone calls are routed in its own mobile switching centre. The establishment expenses create a certain threshold for starting the operation of a virtual network operator.
  • UMA Unlicensed Mobile Access
  • a radio network using unlicensed radio frequencies such as, for example, a wireless local area network in its different forms (for example different versions of IEEE 802.11) and Bluetooth networks, with a packet-switched mode for circuit-switched services (reference: UMA)
  • the virtual mobile network operator may become a real mobile network operator without it having to acquire a license or build a radio system covering the entire country.
  • UMA Unlicensed Mobile Access
  • UMA refers to a manner specified by the UMA consortium for relaying the circuit-switched signalling protocols of a public mobile phone system over a TCP/IP connection by utilizing, for example, any unlicensed radio frequency.
  • Figure 1 shows the structure of a home network of a host network operator and a virtual mobile network operator in the present situation
  • Figure 2 shows a system according to the invention which changes the multimedia core network to operate as a home core network of a virtual mobile network operator
  • the home networks (100) and (101) of the host network operator and the virtual mobile network operator according to figure 1 comprise a home location register (1), which in turn comprises an authentication centre (AuC), an equipment identity register (EIR) (2), a service control point (SCP) (3), a short message/multimedia messaging centre (SMSC/MMSC) (4), a mobile switching centre/visitor location register (MSC/VLR) (5), and a gateway mobile switching centre (GMSC) (6).
  • a virtual mobile network operator has its own interconnection gateway to external networks (102).
  • the traffic through the interconnection gateway travels from the mobile phone (7) of a subscriber of a virtual mobile network operator via a base station of a host network operator (NodeB/BTS) (8) and a base station controller (RNC/BSC) (9) to the mobile switching centre (5) of the host network company.
  • NodeB/BTS host network operator
  • RNC/BSC base station controller
  • the phone call is directed to the mobile switching centre (10) of the virtual mobile network operator.
  • the phone call is forwarded to the right destination.
  • the phone calls to the network of the virtual mobile network operator are directed via its own interconnection gateways.
  • the phone call is directed to a mobile switching centre (10), and on the basis of data provided by the connected home location register (1) the phone call is forwarded via a radio path of a host network operator to a subscriber (7) of the virtual mobile network operator.
  • An internal phone call within the virtual mobile network operator travels from a subscriber (7) of the virtual mobile network operator via a base station (8) of the host network company, a base station controller (9) and a mobile switching centre (5) to the mobile switching centre (10) of the virtual mobile network controller and from there via the network of the host network operator back to a second subscriber of the virtual mobile network operator.
  • the home network (101) of a virtual mobile network operator comprises a home location register (1), an equipment identity register (2), a user agent server (UAS) (10), a mobility proxy (11), a media gateway controller (MGC) (12), a signalling gateway (SGW) (13) and a media gateway (MGW) (14).
  • a user agent server (10) now produces the mobile services of a conventional mobile phone system based on multimedia services of a user agent server (10), the most central of which is an IP telephone service, which implements, and possibly in the future also replaces, conventional circuit-switched telephone services (i.e. teleservices) as well as supplementary services connected to them (i.e. call transfer, call holding/call pickup, etc.) in public mobile phone networks as well.
  • the IP telephone service can, in turn be a generic IP telephone service according to IETF (Internet Engineering Task Force) specifications or a proprietary IP telephone service, such as Skype. It can also be a multimedia service of an IP Multimedia Subsystem (IMS) specified by 3GPP (the 3 rd Generation Partnership Project).
  • IMS IP Multimedia Subsystem
  • 3GPP the 3 rd Generation Partnership Project
  • the interface (50) is a signalling interface between mobile switching centres and utilizing BICC or ISUP protocol, where the lower level protocols are MTP protocols or Sigtran protocols, such as SCTP/IP or M3UA/IP.
  • the interface (51) media is transferred between the base station controller (9) of the host network operator and the media gateway (14) of the virtual mobile network operator by using a conventional pulse code modulation method (PCM).
  • PCM pulse code modulation method
  • the interface (52) is an interface according to SIP session procedure.
  • the interface (53) is an MAP interface, where the lower level protocols are MTP protocols or Sigtran protocols, such as SCTP/IP or M3UA/IP.
  • the interface (54) is an Up interface according to UMA specifications.
  • the mobility proxy (11) according to the invention of figure 2 comprises the following functions.
  • An UNC GW function (20) comprises an UMA radio resource protocol gateway, via which the terminal (6) equipped with UMA properties registers and communicates with the mobility proxy (11) and through that with the home network (101).
  • the mobility proxy (11) does not implement the actual UMA network controller, but only the UMA radio resource protocol gateway.
  • a VLR function (22) comprises the visitor location register extended with controlling the address-of-record of the IP telephone service and address binding connected to sessions.
  • An SIP Proxy function (23) comprises a SIP proxy server extended with the registration function of a user agent client (UAC).
  • a SGW function (21) is the core of the protocol routing operation of the mobility proxy (11), which receives and relays the location updating, registering, identification, connection, disconnection requests and responses coming from and going to different interfaces.
  • the SGW function (21) shown in figure 2 receives a location updating request from the terminal (16) relayed by the UNC GW function (20) via the interface (54), it relays the request further to the VLR function (22).
  • the VLR function (22) signals the location updating via the interface (53) with the previous MSC/VLR (i.e. the MSC/VLR (5) or some other MSC/VLR that is not shown in figure 2) and the home location register of the subscriber in question (i.e. the home location register (1) or the home location register of some other home network, which is not shown in figure 2; for the purpose of example let us assume that the home core network of the subscriber in question is the home network (101)).
  • the VLR function (22) signals via the SGW (21) and UNC GW (20) functions between the terminal (16) and the home (1) and equipment identity register (2) of the subscriber.
  • the home location register (1) relays to the VLR function (22) the subscriber data of the user related the circuit-switched services etc. of the public mobile phone system, which the VLR function (22) saves in its database (or a corresponding memory).
  • the SGW function (21 ) activates the SIP Proxy function (23) to perform the registration according to the SIP session procedure to the user agent server (10) via the interface (52).
  • the SIP Proxy function (23) sets the home network registrar's domain name to the Request URI (Uniform Resource Identifier) of the SIP registration request, which domain name the SIP Proxy function (23) derives from the country and network codes of the user's International Mobile Subscriber Identity (IMSI) according to the 3GPP specifications.
  • IMSI International Mobile Subscriber Identity
  • the SIP Proxy function (23) sets the registration address, which is the public user identity of the registering user presented in the form of a uniform resource locator (URL) meant for a phone number, which in this case is the international mobile phone number (mobile station ISDN, MSISDN) of the above-mentioned registering user.
  • URL uniform resource locator
  • the SIP Proxy function (23) sets the address connection connected to the SIP session services of the user's SIP end point, which address connection follows the resource identifier structure according to the SIP session procedure, including the user's international mobile phone number as a character string + '@' character + domain name of the mobility proxy (11) or its numeric IP address.
  • the SIP Proxy function (23) relays to the user agent server (10) the address connection connected to the SIP session services of the user's SIP end point, which address connection the SIP Proxy function (23) also relays to the VLR function (22) to be stored in a database (or a corresponding memory).
  • the above-mentioned address connection of the session services of the SIP end point now specifies the location of the terminal (16) in the home network (101) and is the same as the address connection relayed in the From header field, i.e. the user's international mobile phone number as a character string + '@' character + domain name of the mobility proxy (11) or its numeric IP address.
  • the address connection in question specified by the location may also be formed of the user's international mobile phone number as a character string + domain name of the media gateway controller (12) or its numeric IP address.
  • the SIP Proxy function (23) relays the subscriber data stored by the VLR function (22) to the directory service of the user agent server (10) or the like.
  • Another way to implement the relay of subscriber data is to use, for example, an application programming interface (API) of the directory service of the user agent server (10) for adding, changing and removing subscriber data.
  • API application programming interface
  • the SIP Proxy function (23) sends a location updating response indicating acceptance to the SGW function (21), which relays it to the terminal (16) via the UNC GW function (20).
  • the SIP Proxy (23) activates the cancellation of location updating to the home location register (1).
  • the cancellation of location updating is performed by the VLR function (22) and the SGW function (22) signals it between the terminal (16) and the VLR function (19) via the UNC GW function (20).
  • the home location register (1) can also reject the original location updating request, which rejection is signalled by the SGW function (22) to the terminal (16) via the UNC GW function (20) after receiving it from the VLR function (22).
  • the SIP Proxy function (23) of the mobility proxy (11) receives a SIP connection session request from the media gateway controller (12) via the interface (52)
  • the SIP Proxy function (23) requests the VLR function (22) to search the routing information from the home location register of the sought subscriber (i.e. the home location register (1) or the home location register of some other home network, which is not shown in figure 2) via the interface (53).
  • the VLR function (22) derives the home location register address of the sought subscriber from the phone number of the sought user, which the SIP Proxy function (23) picks up from the To header field of the received SIP session request and relays to the VLR function (22).
  • the To header field of the received SIP session request includes the phone number of the sought user (i.e.
  • the home location register of the sought subscriber sends as a routing address the number of that mobile switching centre, via which the connection to the sought subscriber is formed (i.e. the number of that mobile switching centre whose visitor location register area the sought subscriber at that moment is located).
  • the VLR function (22) relays the routing address and the international identity of the subscriber to the SIP Proxy function (23), which performs the (re) registration of a third party of the sought subscriber by sending a SIP registration request to the registrar of the home network of the sought subscriber via the interface (52) if the above-mentioned routing address differs from the mobile switching centre number corresponding to the mobile proxy (11) in question.
  • the SIP Proxy function (23) To the request URI of the SIP registration request the SIP Proxy function (23) sets the domain name of the home network registrar of the sought subscriber, which the SIP Proxy function (23) derives from the country and network codes of the sought subscriber's international identity according to 3GPP specifications. In the To header field of the SIP registration request the SIP Proxy function (23) sets a registration address, which is the sought subscriber's telephone number (i.e. public identity) shown in the form of a resource locator meant for telephone numbers.
  • the sought subscriber's telephone number i.e. public identity
  • the SIP Proxy function (23) sets the address connection connected to the SIP session procedure of the seeking SIP end point, which address connection follows the resource identifier structure according to the SIP session procedure, including the seeking subscriber's international mobile phone number as a character string + ' ⁇ ' character + domain name of the mobility proxy (11) or its numeric IP address.
  • the SIP Proxy function (23) relays to the registrar of the sought subscriber's home network the address connection connected to the SIP session services of the SIP end point of the sought subscriber, which address connection defines the location of the SIP end point of the sought subscriber and which is the phone number of the sought user as a character string + ' @ ' character + domain name of that mobility proxy of media gateway controller that is associated to the mobile switching centre received in the routing data query (i.e. the mobility proxy or media gateway controller, via which the mobile switching centre in question can be accessed).
  • the domain name of the mobility proxy or the media gateway controller in question can be derived from the country and network codes of the mobile switching centre number in question according to the 3GPP specifications, or it can be received from the network configuration data.
  • the SIP Proxy function (23) of the mobility proxy (11 ) receives an OK response to the SIP registration request it has sent, the (re) registration to the home network of the sought subscriber has succeeded. If the Contact header field of the received OK response now also has some other address connection, which follows the resource identity structure according to the SIP session procedure including the user's phone number as a character string + ' ⁇ ' character + some domain name or a numeric IP address, i.e.
  • the SIP Proxy function (23) (re)registers the phone number of the seeking subscriber as an address connection to the mobility proxy (11) or as an address connection pointing to the media gateway controller (12), which follows the resource identity structure according to SIP session procedure, including the phone number of the sought subscriber as a character string + '@' character + domain name of the mobility proxy (11) or the media gateway controller (12) or its numeric IP address.
  • the registration is performed to the home network registrar of the seeking subscriber, whose address the SIP Proxy (23) derives from the phone number of the seeking subscriber in the From header field of the received SIP session request or from the country and network codes of the internationally identity of the seeking subscriber picked up from the database of the VLR function (22) (or a corresponding memory) according to 3GPP specifications.
  • the SIP Proxy function (23) of the mobility proxy (11) receives an OK response to the registration, the (re)registration to the home network of the seeking subscriber has succeeded.
  • the Contact header field of the received OK response now again has some other address connection, which follows the resource identity structure according to the SIP session procedure including the seeking user's phone number as a character string + ' ⁇ ' character + some domain name or a numeric IP address, i.e. the previous registration to the home network of the seeking subscriber via some other mobility proxy, that other address connection is removed by sending a registration request to the home network registrar of the seeking subscriber, the expiration time of which request is 0 seconds and whose Contact header field now has that other address connection.
  • the SIP Proxy function (23) relays a SIP session request to the user agent server (10), after which the SIP session is formed between the terminal (16) and the multimedia core network via the mobility proxy (11). The SIP session is cancelled in a corresponding manner via the mobility proxy (11).

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

Abstract

La présente invention concerne un système et un procédé servant à définir et à mettre à jour la localisation d'utilisateurs dans un réseau domestique d'un système téléphonique mobile public formé par un réseau d'infrastructure multimédia. Le système et le procédé selon la présente invention peuvent être utilisés, par exemple, par des fournisseurs de services fournissant des services de télécommunication pour des entreprises, lorsqu'ils commencent à fonctionner en tant qu'opérateurs d'un réseau mobile virtuel en fournissant des services téléphoniques mobiles à leurs clients en utilisant des réseaux d'infrastructure multimédia existants en tant que tels. Le système selon l'invention comprend un réseau d'infrastructure multimédia; une passerelle de signalisation qui relie le réseau multimédia au réseau téléphonique mobile public; et un serveur mandataire de mobilité qui connecte le réseau d'infrastructure multimédia à l'enregistreur de localisation nominale du réseau téléphonique mobile public. Le serveur mandataire de mobilité conserve la localisation des utilisateurs dans le réseau d'infrastructure multimédia en (ré)enregistrant les utilisateurs sur le réseau d'infrastructure multimédia toujours au moment de la connexion. La localisation d'un utilisateur A (c'est-à-dire l'expéditeur d'une demande d'établissement de connexion) est associée à cette passerelle de signalisation ou à ce serveur mandataire de mobilité, via lesquels la demande d'établissement de connexion de l'utilisateur A arrive dans le réseau d'infrastructure multimédia. La localisation d'un utilisateur B (c'est-à-dire le récepteur de la demande d'établissement de connexion) est à son tour associée à cette passerelle de signalisation ou à ce serveur mandataire de mobilité, via lesquels l'utilisateur B peut être joint à partir d'un réseau téléphonique mobile public. La localisation de l'utilisateur B est définie sur la base d'une identité du centre de commutation mobile reçue depuis le registre de localisation nominale de l'utilisateur B.
PCT/FI2007/050303 2007-05-28 2007-05-28 Positionnement et mise à jour de la localisation des utilisateurs dans un réseau domestique d'un système téléphonique mobile formé par un réseau d'infrastructure multimédia WO2009004109A1 (fr)

Priority Applications (1)

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PCT/FI2007/050303 WO2009004109A1 (fr) 2007-05-28 2007-05-28 Positionnement et mise à jour de la localisation des utilisateurs dans un réseau domestique d'un système téléphonique mobile formé par un réseau d'infrastructure multimédia

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PCT/FI2007/050303 WO2009004109A1 (fr) 2007-05-28 2007-05-28 Positionnement et mise à jour de la localisation des utilisateurs dans un réseau domestique d'un système téléphonique mobile formé par un réseau d'infrastructure multimédia

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002102107A1 (fr) * 2001-06-08 2002-12-19 Nokia Corporation Acces a un sous-systeme multimedia ip
US6871070B2 (en) * 2001-07-31 2005-03-22 Lucent Technologies Inc. Communication system for providing roaming between an internet protocol multimedia system and a circuit-switched domain
US6996087B2 (en) * 2001-07-31 2006-02-07 Lucent Technologies Inc. Communication system including an interworking mobile switching center for call termination
WO2006085295A1 (fr) * 2005-02-14 2006-08-17 Accuris Technologies Limited Passerelle itinerante

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002102107A1 (fr) * 2001-06-08 2002-12-19 Nokia Corporation Acces a un sous-systeme multimedia ip
US6871070B2 (en) * 2001-07-31 2005-03-22 Lucent Technologies Inc. Communication system for providing roaming between an internet protocol multimedia system and a circuit-switched domain
US6996087B2 (en) * 2001-07-31 2006-02-07 Lucent Technologies Inc. Communication system including an interworking mobile switching center for call termination
WO2006085295A1 (fr) * 2005-02-14 2006-08-17 Accuris Technologies Limited Passerelle itinerante

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