WO2002033913A1 - Method for initiation of a communication session in a mobile telephony network - Google Patents

Method for initiation of a communication session in a mobile telephony network Download PDF

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Publication number
WO2002033913A1
WO2002033913A1 PCT/SE2001/002278 SE0102278W WO0233913A1 WO 2002033913 A1 WO2002033913 A1 WO 2002033913A1 SE 0102278 W SE0102278 W SE 0102278W WO 0233913 A1 WO0233913 A1 WO 0233913A1
Authority
WO
WIPO (PCT)
Prior art keywords
subscriber
network
address
external
internet access
Prior art date
Application number
PCT/SE2001/002278
Other languages
French (fr)
Inventor
Niklas Lundin
Hans-Olof Sundell
Hans RÖNNEKE
Dave Larson
Original Assignee
Telefonaktiebolaget Lm Ericsson
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 filed Critical Telefonaktiebolaget Lm Ericsson
Priority to AU2001296162A priority Critical patent/AU2001296162A1/en
Publication of WO2002033913A1 publication Critical patent/WO2002033913A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/45—Network directories; Name-to-address mapping
    • H04L61/4557—Directories for hybrid networks, e.g. including telephone numbers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/45—Network directories; Name-to-address mapping
    • H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
    • H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5007—Internet protocol [IP] addresses
    • H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5007—Internet protocol [IP] addresses
    • H04L61/503—Internet protocol [IP] addresses using an authentication, authorisation and accounting [AAA] protocol, e.g. remote authentication dial-in user service [RADIUS] or Diameter
    • 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]

Definitions

  • the present invention relates to a method by means of which an external service provider may communicate with a subscriber in a mobile telephony packet data network without the subscriber having initiated the communication.
  • wireless mobile telephony packet data systems such as for example the GPRS-system or the UMTS-system
  • service providers who are external with regards to the mobile system to provide subscribers in the system with different kinds of information services, the transfer of said information being initiated by the provider, with the information in most cases being transferred via the Internet or an Intranet.
  • information transferred by means of such services are, for example, a travel agent who wishes to notify the subscriber of a change in flight schedules, or a stock broker wishing to inform the subscriber of a change in the stock market.
  • a travel agent who wishes to notify the subscriber of a change in flight schedules
  • a stock broker wishing to inform the subscriber of a change in the stock market.
  • the subscriber receives the information without having explicitly contacted the provider at that particular point in time in order to receive the information. Rather, it is the provider who wishes to initiate the transfer of information.
  • the provider In order for the external provider to reach the subscriber in the network with the information via Internet/Intranet or similar such systems, the provider needs to know the subscriber's address from an Internet "point of view", i.e. the user's so called IP-address. In some systems, all users are assigned so called static IP-addresses. Alternatively, use is made of so called dynamic IP- addresses, i.e. a user is assigned a new, and in all likelihood different IP- address each time that he connects to the network. The external provider, wishing to transfer information to the subscriber, will thus not know which IP- address the user has been assigned at that particular point in time, and will accordingly not be able to reach him.
  • the method should also enable external providers to transfer data to users who have not at that particular point in time been assigned an IP- address, i.e. "attach” has been performed, but not "session set-up".
  • Such a method is provided by the present invention in that it comprises the use of an Internet access protocol to allow an external service provider to trigger a set-up procedure for the subscriber within the network.
  • an external service provider it is thus possible for an external service provider to trigger a procedure which it would normally only have been possible for the subscriber himself to initiate. The procedure will lead to an IP-address being assigned to the subscriber, and information about the IP-address will be sent to the external service provider who will then be able to reach the subscriber and transfer information to him.
  • the external service provider uses information about the subscriber, which is already known to the provider in triggering the set-up procedure.
  • Fig 1 shows a schematic overview of a system in which the invention can be applied.
  • FIG. 1 shows a schematic overview of a mobile telephony packet data system in which the invention can be applied. The following system components are shown in the figure:
  • GGSN Gateway GPRS Support Node.
  • SGSN Serving GPRS Support Node.
  • MS - Mobile Station i.e. the terminal or telephone as such.
  • an external web server (WS) is also shown, symbolically separated from the system as such by dashed lines.
  • This external web server is preferably an Internet or Intranet server, used by a service provider with whom the subscriber (MS) has an agreement or a subscription for the transfer of certain information.
  • IP-address IP, Internet Protocol
  • This IP-address can in some systems be assigned to the subscriber once and for all, when the subscriber first starts to use the system, so called static assignment of IP-addresses.
  • IP- addresses are assigned in a so called dynamic fashion, i.e. an IP-address is assigned to a user only for the duration of an ongoing so called session. In this case, it becomes impossible for the external web server to address information to a particular subscriber, since the external web server has no way of knowing the IP-address of the subscriber.
  • the subscriber is using his MS, but not for the transfer of data via e.g. the Internet or an Intranet.
  • the subscriber is "attached" to the network, but no IP-address has been assigned to him.
  • This subscriber has only performed what is known as an "attach” procedure, giving him access to the network, the session set up procedure which assigns an IP-address has not yet been performed.
  • the subscriber has a static IP address assigned for their exclusive use.
  • the invention provides a component in the mobile telephony network, preferably the GGSN, with the functionality of an Internet access protocol.
  • GGSN the mobile telephony network
  • This simplified version of the Internet access protocol need only allow the external web server the possibility of interfacing with the mobile network according to that particular protocol, the node or nodes in the network in which the Internet access protocol is located doesn't need to implement all of the functions of the protocol.
  • the external web server informs the network, preferably via the GGSN, that it wants to transfer information to a subscriber.
  • This can be done by a number of different Internet access protocols, such as for example the DNS protocol, but other protocols which could also be used are the RADIUS, DHCP or the DIAMETER protocols.
  • the GGSN is provided with the functionality of the Internet access protocol which is used, which means that the web server can address the mobile subscriber using protocols it would use to address any other Internet/intranet-subscriber.
  • the external web server does not know the IP-address of the subscriber, nor does it even know if he has one, for which reason the subscriber must be identified to the GGSN by the web server in some other way.
  • the web server has some information other than an IP-address regarding the subscriber stored, for example the subscriber's MSISDN.
  • the GGSN addresses the HLR, and is in return informed of which SGSN is the most suitable for addressing the MS.
  • the GGSN addresses the SGSN in question, which in turn addresses the MS. 4.
  • the MS initiates a so called "session set-up".
  • the MS is assigned an IP-address, or in the case of a user with a static IP-address, the network can obtain the IP- address.
  • the IP-address is known to the network prior to the setup, it can be returned to the WS at the same time as it is provided to the MS, or before it is provided to the MS.
  • the IP-address is returned to the WS via the Internet access protocol.
  • the Internet access protocol used could contain functions for accounting and authorization towards the external web server.
  • Authorization would mean that only certain web servers, for example web servers which have contracts with the operator of the network, would be allowed to access the network in the fashion shown above, other web servers would simply be refused access to the subscribers in the network. Accounting could be used to bill those external web servers whichaccess the network in the fashion shown above.
  • the Internet access protocol used could in principle be any suitable Internet access protocol
  • the information about the subscriber which the external web server uses to identify the subscriber to the system could be an arbitrary piece of information, as long as it identifies the subscriber to the network in a sufficient manner.
  • the invention may be applied both to wireless mobile telephony packet data network and to systems which use traditional wirelines.

Landscapes

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

Abstract

The invention relates to a method for use in a mobile telephony packet data network in which a subscriber has been assigned a user address within the network. The method allows a service provider who is external with regard to the network to receive information about the user's address and thereby to communicate with the subscriber, in that the method comprises the use of an Internet access protocol to allow an exernal service provider to initiate a set-up procedure for the subscriber within the network. According to the invention, the external service provider preferably uses information about the subscriber known to the provider in initiating the sep-up procedure.

Description

TITLE
METHOD FOR INITIATION OF A COMMUNICATION SESSION IN A MOBILE TELEPHONY NETWORK
FIELD OF THE INVENTION
The present invention relates to a method by means of which an external service provider may communicate with a subscriber in a mobile telephony packet data network without the subscriber having initiated the communication.
BACKGROUND OF THE INVENTION
In certain wireless mobile telephony packet data systems, such as for example the GPRS-system or the UMTS-system, it is possible for service providers who are external with regards to the mobile system to provide subscribers in the system with different kinds of information services, the transfer of said information being initiated by the provider, with the information in most cases being transferred via the Internet or an Intranet. Examples of information transferred by means of such services are, for example, a travel agent who wishes to notify the subscriber of a change in flight schedules, or a stock broker wishing to inform the subscriber of a change in the stock market. Common to these services is that the subscriber receives the information without having explicitly contacted the provider at that particular point in time in order to receive the information. Rather, it is the provider who wishes to initiate the transfer of information.
In order for the external provider to reach the subscriber in the network with the information via Internet/Intranet or similar such systems, the provider needs to know the subscriber's address from an Internet "point of view", i.e. the user's so called IP-address. In some systems, all users are assigned so called static IP-addresses. Alternatively, use is made of so called dynamic IP- addresses, i.e. a user is assigned a new, and in all likelihood different IP- address each time that he connects to the network. The external provider, wishing to transfer information to the subscriber, will thus not know which IP- address the user has been assigned at that particular point in time, and will accordingly not be able to reach him.
In addition, a situation might exist in a system with dynamic assignment of IP- addresses in which the subscriber hasn't even initiated a session with the data network, i.e. he has only performed the so called "attach" procedure, not the "session set-up procedure." In this case, the subscriber hasn't been assigned a dynamic IP-address, thus also making it impossible for an external provider to reach him via the Internet/Intranet.
SUMMARY
There is thus a need for a method by means of which a provider who is external with regards to a mobile telephony packet data network can reach a subscriber in the network without prior knowledge of that subscriber's address in the network. The method should be cost effective and simple to install in existing systems, and should in particular be able to address the case of subscribers being assigned their addresses in the network in a dynamic fashion, in which cases the external provider should be able to receive information about the user's dynamic address.
In addition, the method should also enable external providers to transfer data to users who have not at that particular point in time been assigned an IP- address, i.e. "attach" has been performed, but not "session set-up".
Such a method is provided by the present invention in that it comprises the use of an Internet access protocol to allow an external service provider to trigger a set-up procedure for the subscriber within the network. By means of the invention, it is thus possible for an external service provider to trigger a procedure which it would normally only have been possible for the subscriber himself to initiate. The procedure will lead to an IP-address being assigned to the subscriber, and information about the IP-address will be sent to the external service provider who will then be able to reach the subscriber and transfer information to him.
In a particular embodiment of the invention, the external service provider uses information about the subscriber, which is already known to the provider in triggering the set-up procedure.
DESCRIPTION OF THE DRAWINGS
The invention will be described in more detail below, with the aid of the appended drawings, in which
Fig 1 shows a schematic overview of a system in which the invention can be applied.
EMBODIMENTS Fig 1 shows a schematic overview of a mobile telephony packet data system in which the invention can be applied. The following system components are shown in the figure:
HLR - Home Location Register.
GGSN - Gateway GPRS Support Node. SGSN - Serving GPRS Support Node.
MS - Mobile Station, i.e. the terminal or telephone as such.
MSC - Mobile Switching Center.
In addition, the following abbreviations will also be used in the text: DHCP - Dymnamic Host Configuration Protocol DNS - Domain Name Server
MSISDN - Mobile Station Integrated Services Digital Network RADIUS - Remote Authentication Dial In User Service
In addition to the system components, an external web server (WS) is also shown, symbolically separated from the system as such by dashed lines. This external web server is preferably an Internet or Intranet server, used by a service provider with whom the subscriber (MS) has an agreement or a subscription for the transfer of certain information.
In order for the web server to send information to the subscriber (MS), the web server needs to know the so called IP-address (IP, Internet Protocol) of the subscriber. This IP-address can in some systems be assigned to the subscriber once and for all, when the subscriber first starts to use the system, so called static assignment of IP-addresses. However, in other systems, IP- addresses are assigned in a so called dynamic fashion, i.e. an IP-address is assigned to a user only for the duration of an ongoing so called session. In this case, it becomes impossible for the external web server to address information to a particular subscriber, since the external web server has no way of knowing the IP-address of the subscriber. Three different cases can be seen here:
1 ) The subscriber is using his MS, but not for the transfer of data via e.g. the Internet or an Intranet. In this case, the subscriber is "attached" to the network, but no IP-address has been assigned to him. This subscriber has only performed what is known as an "attach" procedure, giving him access to the network, the session set up procedure which assigns an IP-address has not yet been performed.
2) The subscriber has performed both "attach" and "set-up", and has thus been assigned a dynamic IP-address, but as explained above, this IP- address is still unknown to the external web server which for that reason cannot transfer information to the subscriber.
3) The subscriber has a static IP address assigned for their exclusive use.
In order for the web server to be able to transfer information to the subscriber in either of the situations outlined above, i.e. static/dynamic allocation of IP- addresses, the invention provides a component in the mobile telephony network, preferably the GGSN, with the functionality of an Internet access protocol. There is no need for the entire Internet access protocol to be emulated by the network component or node, a simplified version can be used which carries out the operations which will be described in the following. This simplified version of the Internet access protocol need only allow the external web server the possibility of interfacing with the mobile network according to that particular protocol, the node or nodes in the network in which the Internet access protocol is located doesn't need to implement all of the functions of the protocol.
According to the method of the invention, a possible sequence if events is as follows:
1. The external web server informs the network, preferably via the GGSN, that it wants to transfer information to a subscriber. This can be done by a number of different Internet access protocols, such as for example the DNS protocol, but other protocols which could also be used are the RADIUS, DHCP or the DIAMETER protocols. To this end, the GGSN is provided with the functionality of the Internet access protocol which is used, which means that the web server can address the mobile subscriber using protocols it would use to address any other Internet/intranet-subscriber. The external web server does not know the IP-address of the subscriber, nor does it even know if he has one, for which reason the subscriber must be identified to the GGSN by the web server in some other way. For this purpose, the web server has some information other than an IP-address regarding the subscriber stored, for example the subscriber's MSISDN.
2. The GGSN addresses the HLR, and is in return informed of which SGSN is the most suitable for addressing the MS.
3, The GGSN addresses the SGSN in question, which in turn addresses the MS. 4. The MS initiates a so called "session set-up".
5. As a result of the "session set-up", the MS is assigned an IP-address, or in the case of a user with a static IP-address, the network can obtain the IP- address. Alternatively, if the IP-address is known to the network prior to the setup, it can be returned to the WS at the same time as it is provided to the MS, or before it is provided to the MS.
6. The IP-address is returned to the WS via the Internet access protocol.
In a further embodiment of the invention, the Internet access protocol used could contain functions for accounting and authorization towards the external web server. Authorization would mean that only certain web servers, for example web servers which have contracts with the operator of the network, would be allowed to access the network in the fashion shown above, other web servers would simply be refused access to the subscribers in the network. Accounting could be used to bill those external web servers whichaccess the network in the fashion shown above.
The invention is not limited to the embodiments shown above, but may be freely varied within the scope of the claims. For example, the Internet access protocol used could in principle be any suitable Internet access protocol, and the information about the subscriber which the external web server uses to identify the subscriber to the system could be an arbitrary piece of information, as long as it identifies the subscriber to the network in a sufficient manner. In addition, the invention may be applied both to wireless mobile telephony packet data network and to systems which use traditional wirelines.

Claims

2001-10-16 7
1 A method for use in a mobile telephony packet data network in which a subscriber has been assigned an IP-address within the network, said method allowing a service provider who is external with regard to the network to receive information about the user's an IP-address, and thereby to communicate with the subscriber, said method being characterized in that it comprises the use of an Internet access protocol to allow an external service provider to initiate a set-up procedure for the subscriber within the network
2 A method according to claim 1 , applied in a wireless mobile telephony packet data network
3 A method according to claim 1 or 2, in which the user's IP-address is assigned in a dynamic fashion
4 A method according to claim 1 or 2, in which the user's IP-address is assigned in a static fashion
5 A method according to any of claims 1 -4, in which the Internet access protocol used is the DNS-protocol
6 A method according to any of claims 1 -4, in which the Internet access protocol used is the RADIUS-protocol
7 A method according to any of claims 1 -4, in which the Internet access protocol used is the DHCP-protocol
8 A method according to any of claims 1 -4, in which the Internet access protocol used is the DIAMETER-protocol
PCT/SE2001/002278 2000-10-18 2001-10-18 Method for initiation of a communication session in a mobile telephony network WO2002033913A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001296162A AU2001296162A1 (en) 2000-10-18 2001-10-18 Method for initiation of a communication session in a mobile telephony network

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0003777A SE0003777D0 (en) 2000-10-18 2000-10-18 Method for use in a mobile telephony packet data network for initiation of a communication session from a service provider external to the network
SE0003777-0 2000-10-18

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WO2002033913A1 true WO2002033913A1 (en) 2002-04-25

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003081940A1 (en) * 2002-03-27 2003-10-02 Telefonaktiebolaget L M Ericsson (Publ) A method for exchanging user-specific data from a mobile network to a service application of an external service provider using a unique application user id code
WO2005109940A1 (en) * 2004-05-12 2005-11-17 Nokia Corporation Session establishment for real-time media communication service

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000044148A1 (en) * 1999-01-19 2000-07-27 3Com Corporation Mapping id addresses to identification numbers for wireless communication
EP1028569A2 (en) * 1999-02-10 2000-08-16 Celestica Limited Mobile Internet video telephony communications protocol
EP1065870A2 (en) * 1999-06-17 2001-01-03 Lucent Technologies Inc. Internet protocol telephony

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000044148A1 (en) * 1999-01-19 2000-07-27 3Com Corporation Mapping id addresses to identification numbers for wireless communication
EP1028569A2 (en) * 1999-02-10 2000-08-16 Celestica Limited Mobile Internet video telephony communications protocol
EP1065870A2 (en) * 1999-06-17 2001-01-03 Lucent Technologies Inc. Internet protocol telephony

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003081940A1 (en) * 2002-03-27 2003-10-02 Telefonaktiebolaget L M Ericsson (Publ) A method for exchanging user-specific data from a mobile network to a service application of an external service provider using a unique application user id code
WO2005109940A1 (en) * 2004-05-12 2005-11-17 Nokia Corporation Session establishment for real-time media communication service
US8451849B2 (en) 2004-05-12 2013-05-28 Nokia Corporation Session establishment for real-time media communication service

Also Published As

Publication number Publication date
SE0003777D0 (en) 2000-10-18
AU2001296162A1 (en) 2002-04-29

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