WO1999020071A1 - Transfert de donnees entre des unites en interfonctionnement d'un reseau d'acces radio generique - Google Patents

Transfert de donnees entre des unites en interfonctionnement d'un reseau d'acces radio generique Download PDF

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Publication number
WO1999020071A1
WO1999020071A1 PCT/SE1998/001783 SE9801783W WO9920071A1 WO 1999020071 A1 WO1999020071 A1 WO 1999020071A1 SE 9801783 W SE9801783 W SE 9801783W WO 9920071 A1 WO9920071 A1 WO 9920071A1
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WO
WIPO (PCT)
Prior art keywords
rnc
iwu
core network
gran
forwarding
Prior art date
Application number
PCT/SE1998/001783
Other languages
English (en)
Inventor
Johan Rune
Johan Lagneborg
Original Assignee
Telefonaktiebolaget Lm Ericsson (Publ)
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 Telefonaktiebolaget Lm Ericsson (Publ) filed Critical Telefonaktiebolaget Lm Ericsson (Publ)
Priority to AU94687/98A priority Critical patent/AU9468798A/en
Publication of WO1999020071A1 publication Critical patent/WO1999020071A1/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

Definitions

  • the present invention relates generally to the problem of mobility in the Generic Radio Access Network (GRAN) , and more particularly to the problem of updating core-network specific information with a minimum of radio resources when a mobile terminal moves to an area covered by a new radio network controller (RNC) .
  • GRAN Generic Radio Access Network
  • RNC new radio network controller
  • GRAN Generic Radio Access Network
  • any type of core network e.g. GSM, ISDN, PSTN, Internet, etc.
  • core network e.g. GSM, ISDN, PSTN, Internet, etc.
  • FIG 1 The basics of a GRAN have been described in PCT/SE96/00510, "METHOD AND ARRANGEMENT FOR INCREASING THE RANGE FOR A TELECOMMUNICATION NETWORK IN A TELECOMMUNICATION SYSTEM.” It is part of the ongoing development of a Universal Mobile Telecommunications System (“UMTS”) within the European Telecommunications Standards Institute (“ETSI").
  • UMTS Universal Mobile Telecommunications System
  • ETSI European Telecommunications Standards Institute
  • UMTS has been described as a 'third-generation' mobile communications system, as compared with current mobile systems like GSM which are referred to as ⁇ second-generation.
  • ' UMTS is a broadband multimedia system that will support all that current wired and wireless technology can offer and have the ability to support new applications that are common to both, or unique to UMTS.
  • UMTS is seen as a way of facilitating the convergence of wired and wireless networks as seamlessly as possible .
  • UMTS can be thought of as having many different faces: PLMN, PSTN, wireless PABX, wireless LAN, RLL, private mobile radio, satellite systems, paging networks, mobile data networks, etc.
  • UMTS UMTS
  • the access network responsible for communication with terminals over the air interface may be independently owned and operated from those who own and operate as service providers.
  • a GSM user may access the GSM network through an independent access network in the UMTS.
  • a customer of the PSTN at home may also access the PSTN through the same, or perhaps a different, access network.
  • the mobile cellular network may be owned and operated by an access provider, the GRAN operator, by providing access to the service providers over the air interface .
  • the GRAN operator will have no subscribers of its own, but will be merely providing access to the core network service providers for their subscribers .
  • Each of the core networks will be able to access the cellular network, the GRAN, through one or more 'access ports' as shown in Figure 1 and Figure 2. These access ports will then be connected to Radio Network Controllers ("RNC") which control the various base stations in the cellular network.
  • RNC Radio Network Controllers
  • the individual subscribers to the various service providers will be provided access to their service provider through appropriate base stations .
  • FIG. 2 A diagrammatic view of this system can be seen in Figure 2.
  • Future core networks may be tailored to fit the generic interface, but existing core networks will have to use an interworking unit ("IWU") between itself and the GRAN.
  • IWU interworking unit
  • the terminals used while accessing the GRAN will consist of one part that logically belongs to the GRAN and a second part that logically belongs to the core network.
  • Core network subscribers can access their respective core network through the GRAN, which is done using bearer services that the GRAN offers the core networks.
  • the GRAN offers the core networks.
  • two major purposes of the GRAN are to extend the ranges of existing core networks and to provide wireless access and mobility to their subscribers .
  • the GRAN has no subscribers. Only the core network service providers have subscribers .
  • the GRAN is also independent of the service control signalling used by the service providing operators. It does, however, provide basic terminal control, including: idle mode control, basic access with control establishment to the service providing network associated with the terminal and service, and resource control with handover control and performance .
  • interworking functions Between the core networks and the GRAN there are interworking functions . These interworking functions can be regarded as belonging to either the GRAN, the core networks, or neither of them.
  • the interworking functions provide mapping between core network specific and GRAN specific identifiers and parameters. For core networks without support for terminal mobility, a certain subscriber is always accessed through the same access port e.g. 100. For core networks which do support terminal mobility a subscriber can be accessed through any of the access ports, e.g. 100 or 101, to which the core network is connected. Normally the one that provides the shortest route through the GRAN will be used.
  • the GRAN' s internal mobility management will be used to support the local mobility, while the mobility management of the core network will be used to realise a change of access port in the core network.
  • the IWUs contain translation data to map core-network specific identifiers and GRAN-specific identifiers.
  • the mapping data for that subscriber must be moved from the IWU at the old access port e.g. 100 to the IWU at the new access port e.g. 101.
  • the GRAN must be able to accomplish the transfer of subscriber, core network-specific, data. Since the GRAN concept is relatively new, there are no existing methods to deal with this problem. However, it is envisioned that the mobility management protocol of the core network should go transparently through the GRAN between the core network and the core network-specific part of the terminal .
  • Each terminal that will be able to access its core network through the GRAN will have a core network-specific part e.g. 70a and a GRAN-specific part e.g. 70b.
  • the designation of the two parts in Figure 2 serves merely to illustrate the logical separation between the two parts of the terminal.
  • the GRAN- specific part will be responsible for all contact with the GRAN and for all signalling for bearer services between the core network and the core network-specific part of the terminal.
  • the core network-specific part of the terminal will take care of everything else, e.g. call setup, terminal to core network signalling, etc.
  • the core network-specific part of the terminal will also be responsible for a core network location update according to the standard procedures of the core network. For a change of access port between calls, as would occur in a core network location update, this would mean that the core network- specific part of the terminal would initiate and perform a core network location update . In that procedure it would transfer its identity to the new IWU.
  • the GRAN specific part of the mapping data would be transferred directly from the GRAN.
  • Radio resources would be consumed at several stages. First, to inform the terminal that it has entered a new core network location area (corresponding to a change of access port) , if this is not clear from broadcast system information, and that a core network location update should be performed. Second, to set up the radio connection which will be used to convey core network mobility management messages in the core network location update. Finally, the actual transfer of the location update message and acknowledgement between the core network-specific part of the terminal and the core network.
  • the present invention relates generally to the problem of mobility in the Generic Radio Access Network (GRAN) , and more particularly to the problems discussed above.
  • GRAN Generic Radio Access Network
  • GRAN Generic Radio Access Network
  • the acknowledgement message from the IWU 110 comprises an optional, variable-length, field for core network 50 specific data.
  • the IWU 110 inserts the core network 50 specific identifier for the concerned subscriber, possibly along with other core network 50 specific data in this field.
  • the data in this field is not interpreted by the GRAN 60, but is transferred from the old RNC e.g. 120 to the new RNC e.g. 121, along with other data that needs to be transferred between the RNCs 120, 121, and then forwarded to the new IWU 111.
  • the new IWU 111 can then send the relevant core network location update message to the core network 50. In this way the core network location update can be performed without involving the terminal, which is another object of the present invention.
  • mapping data initiated by a location update it is to be understood by anyone skilled in the art that other types of user specific data may also be considered.
  • FIG. 1 is a drawing of a cellular mobile communications system where several service providers provide services over a cellular network operated by an access provider.
  • FIG. 2 is a diagram of the system of shown in Figure 1.
  • FIG. 3 is a flowchart illustrating the steps of the method in the preferred embodiment of the present invention.
  • the present invention addresses a situation that can occur in systems using a GRAN 60 as shown in Figure 2 wherein a core network 50 supports terminal mobility. Although it is possible to support mobility throughout the GRAN 60 while always accessing the core network 50 through the same access port 100, 101, the preferred situation is to use the shortest route from the mobile terminal 70 through the GRAN 60 to the core network 50. This involves changing access ports 100, 101, for a subscriber when that particular subscriber moves to an area covered by an RNC 120, 121, connected to a new access port 100, 101. For example, in Figure 2 the mobile terminal 70 has just moved to the area covered by the second RNC 121 from the area covered by the first RNC 120.
  • the IWU 110 for the core network 50 connected to the same access port 100 contains translation data that is used to map core network-specific identifiers and GRAN-specific identifiers.
  • the access port 100 is changed for a subscriber terminal, in Figure 2 the terminal has changed to a new access port 101, the mapping data relevant for that particular subscriber must be transferred to from the IWU 110 at the old access port 100 to the IWU 111 at the new access port 101.
  • the method of the present invention is initiated when the GRAN- specific part 70b of the terminal 70 contacts, step 300, the new RNC 121 to perform a GRAN 60 location update.
  • the terminal 70 will, as part of this contact with the new RNC 121, transfer, step 310, its GRAN specific temporary identity to the new RNC 121, which will later also transfer, step 360, it to the new IWU 111, or generate a new GRAN specific temporary identity and transfer it to the new IWU 111 and to the GRAN specific part of the terminal .
  • the next step is for the new RNC 121 to contact the old RNC 120, step 320, to notify it that the terminal 70 has moved to a new location.
  • the old RNC 120 will then send a message, step 330, to the old IWU 110 telling it that the mapping data it has for this particular terminal 70 identity is no longer valid.
  • the old IWU 110 will then send an acknowledgement message, step 340, to the old RNC 120.
  • the subscriber identity is added. Because the RNC 120, 121, is part of the GRAN 60, it normally has no knowledge regarding subscriber information, such as the subscriber identity. This information is normally stored on the core network 50 side of the access port 120, 121, e.g. in the IWU 110, 111.
  • the old RNC 120 will then forward, step 350, the subscriber identity, along with GRAN-specific information, to the new RNC 121.
  • the new RNC 121 will then forward, step 360, the subscriber identity along with the temporary identity to the new IWU 111.
  • the new IWU 111 now has both identities, subscriber and temporary. It next contacts, step 370, the core network 50 and performs a core network location update on behalf of the terminal. This core network location update is performed according to the standard procedures of the core network 50.

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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

L'invention concerne la mobilité dans le réseau d'accès radio générique (GRAN) et plus particulièrement la mise à jour des informations spécifiques au réseau-noyau avec une consommation minimale en ressources radio lorsqu'un terminal mobile se déplace vers une zone couverte par un nouveau contrôleur réseau radio (RNC). Lorsque le réseau GRAN informe l'ancienne unité en interfonctionnement (IWU) que son port d'accès n'est plus valide pour un utilisateur précis, le message accusé réception de l'ancienne unité (IWU) comprend un champ optionnel de longueur variable pour les données spécifiques au réseau noyau. L'unité IWU insère l'identificateur spécifique au réseau noyau de cet utilisateur dans le champ. Les informations peuvent ensuite être acheminées jusqu'à la nouvelle unité IWU sans interprétation par le réseau GRAN. La nouvelle IWU peut ensuite réaliser la mise à jour de la localisation du réseau noyau pour le compte du terminal. Ainsi, le terminal de l'abonné n'est pas impliqué et de précieuses ressources radio sont épargnées.
PCT/SE1998/001783 1997-10-10 1998-10-02 Transfert de donnees entre des unites en interfonctionnement d'un reseau d'acces radio generique WO1999020071A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU94687/98A AU9468798A (en) 1997-10-10 1998-10-02 Data transfer between gran interworking units

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9703697-4 1997-10-10
SE9703697A SE513935C2 (sv) 1997-10-10 1997-10-10 Förfarande och system för dataöverföring mellan samverkande GRAN-enheter

Publications (1)

Publication Number Publication Date
WO1999020071A1 true WO1999020071A1 (fr) 1999-04-22

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AU (1) AU9468798A (fr)
SE (1) SE513935C2 (fr)
WO (1) WO1999020071A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1058471A2 (fr) * 1999-05-28 2000-12-06 Nec Corporation Système de communication mobile
WO2001001718A1 (fr) * 1999-06-28 2001-01-04 Nokia Networks Oy Gestion de positions pour systèmes cellulaires
DE10043203A1 (de) * 2000-09-01 2002-03-21 Siemens Ag Generische WLAN-Architektur
EP1263247A1 (fr) * 2001-05-31 2002-12-04 Alcatel Réseau d'accès radio pour l'accès par plusieurs opérateurs de réseau mobiles
WO2003037021A1 (fr) * 2001-10-19 2003-05-01 Nokia Corporation Transmission de l'identite d'un terminal entre noeuds de reseaux centraux
WO2006011753A1 (fr) * 2004-07-27 2006-02-02 Sk Telecom Co., Ltd. Procede et systeme d'interfonctionnement entre un reseau internet portable et d'autres types de reseaux
US7180883B2 (en) 2000-06-26 2007-02-20 Nokia Corporation Transmission method for packet data and a network element
US7623447B1 (en) 2000-04-10 2009-11-24 Nokia Corporation Telephony services in mobile IP networks

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EP0697798A2 (fr) * 1994-08-19 1996-02-21 AT&T Corp. Accès impartial aux opérateurs de réseaux inter-commutateurs pour système de radio-communication mobile de données par paquets
WO1996034504A1 (fr) * 1995-04-24 1996-10-31 Telefonaktiebolaget Lm Ericsson (Publ) Procede et configuration permettant d'accroitre la portee d'un reseau de telecommunications d'un systeme de telecommunications
WO1997016936A1 (fr) * 1995-10-31 1997-05-09 Telefonaktiebolaget Lm Ericsson (Publ) Agencement et procede concernant des reseaux de telecommunications
US5629974A (en) * 1995-11-16 1997-05-13 Nokia Telecommunications Oy Communication system providing mobility management internetworking between a C-interface radio system and an overlay mobile radio network

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0697798A2 (fr) * 1994-08-19 1996-02-21 AT&T Corp. Accès impartial aux opérateurs de réseaux inter-commutateurs pour système de radio-communication mobile de données par paquets
WO1996034504A1 (fr) * 1995-04-24 1996-10-31 Telefonaktiebolaget Lm Ericsson (Publ) Procede et configuration permettant d'accroitre la portee d'un reseau de telecommunications d'un systeme de telecommunications
WO1997016936A1 (fr) * 1995-10-31 1997-05-09 Telefonaktiebolaget Lm Ericsson (Publ) Agencement et procede concernant des reseaux de telecommunications
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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2389753B (en) * 1999-05-28 2004-02-25 Nec Corp Mobile telecommunications system
US9247582B2 (en) 1999-05-28 2016-01-26 Nec Corporation Mobile telecommunications system
US8792893B2 (en) 1999-05-28 2014-07-29 Nec Corporation Mobile telecommunications system
US6725039B1 (en) 1999-05-28 2004-04-20 Nec Corporation Mobile telecommunications system
EP1237390A1 (fr) * 1999-05-28 2002-09-04 Nec Corporation Contrôleur de réseau radio pour un réseau UMTS
EP1058471A2 (fr) * 1999-05-28 2000-12-06 Nec Corporation Système de communication mobile
US10028189B2 (en) 1999-05-28 2018-07-17 Nec Corporation Mobile telecommunications system
GB2389753A (en) * 1999-05-28 2003-12-17 Nec Corp Allocating utran resources corresponding to gsm call parameters to enable handover of a call from a gsm network to a umts network
EP1058471A3 (fr) * 1999-05-28 2001-02-28 Nec Corporation Système de communication mobile
US9591538B2 (en) 1999-05-28 2017-03-07 Nec Corporation Mobile telecommunications system
US8107962B2 (en) 1999-05-28 2012-01-31 Nec Corporation Mobile telecommunications system
WO2001001718A1 (fr) * 1999-06-28 2001-01-04 Nokia Networks Oy Gestion de positions pour systèmes cellulaires
US6898433B1 (en) 1999-06-28 2005-05-24 Nokia Networks Oy Location management for cellular systems
US8160540B2 (en) 2000-04-10 2012-04-17 Motorola Mobility, Inc. Telephony services in mobile IP networks
US7623447B1 (en) 2000-04-10 2009-11-24 Nokia Corporation Telephony services in mobile IP networks
USRE43108E1 (en) 2000-06-26 2012-01-17 Intellectual Ventures I Llc Transmission method for packet data and a network element
US7180883B2 (en) 2000-06-26 2007-02-20 Nokia Corporation Transmission method for packet data and a network element
US7522907B2 (en) 2000-09-01 2009-04-21 Siemens Aktiengesellschaft Generic wlan architecture
DE10043203A1 (de) * 2000-09-01 2002-03-21 Siemens Ag Generische WLAN-Architektur
EP1263247A1 (fr) * 2001-05-31 2002-12-04 Alcatel Réseau d'accès radio pour l'accès par plusieurs opérateurs de réseau mobiles
US7792078B2 (en) 2001-10-19 2010-09-07 Nokia Corporation Forwarding a terminal identity between core network nodes
WO2003037021A1 (fr) * 2001-10-19 2003-05-01 Nokia Corporation Transmission de l'identite d'un terminal entre noeuds de reseaux centraux
WO2006011753A1 (fr) * 2004-07-27 2006-02-02 Sk Telecom Co., Ltd. Procede et systeme d'interfonctionnement entre un reseau internet portable et d'autres types de reseaux

Also Published As

Publication number Publication date
SE513935C2 (sv) 2000-11-27
AU9468798A (en) 1999-05-03
SE9703697D0 (sv) 1997-10-10
SE9703697L (sv) 1999-04-11

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