WO2006000624A1 - Procede, systeme et serveur destines au transfert d'une session dans un systeme de transmission de donnees - Google Patents

Procede, systeme et serveur destines au transfert d'une session dans un systeme de transmission de donnees Download PDF

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Publication number
WO2006000624A1
WO2006000624A1 PCT/FI2005/000294 FI2005000294W WO2006000624A1 WO 2006000624 A1 WO2006000624 A1 WO 2006000624A1 FI 2005000294 W FI2005000294 W FI 2005000294W WO 2006000624 A1 WO2006000624 A1 WO 2006000624A1
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WO
WIPO (PCT)
Prior art keywords
terminal
service
session
user
tel
Prior art date
Application number
PCT/FI2005/000294
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English (en)
Inventor
Harri Jokela
Frans Tuomela
Original Assignee
Teliasonera Finland Oyj
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 Teliasonera Finland Oyj filed Critical Teliasonera Finland Oyj
Publication of WO2006000624A1 publication Critical patent/WO2006000624A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0815—Network architectures or network communication protocols for network security for authentication of entities providing single-sign-on or federations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1083—In-session procedures
    • H04L65/1094—Inter-user-equipment sessions transfer or sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management

Definitions

  • the invention relates to transmitting multimedia traffic in a data communications system, particularly in a data communications system comprising a packet-switched access network for providing a connection for at least one terminal through one or more access points of the access network to one or more packet-switched data networks.
  • the present invention relates to a method, system and application server for transferring a service-related session in a data communications system.
  • the convergence of data communications makes it possible to use different kinds of terminals in connection with certain services.
  • the aim is to provide the user with a uniform user experience regardless of the service in order to allow the user to focus on the actual services and their content instead of learning to use the terminals.
  • the services used with various terminals are typically different and dependent on the terminal, and it has been difficult to transfer a connection from one terminal to another.
  • separate authentication has been required between different types of terminals even if the same service has been used. Solutions which make it possible to log into a service using another terminal as an authentication means are previously known.
  • Authentication for web services for example, can be performed with a mobile terminal, either by a text message or by a WAP Push message.
  • Authentication data can be transmitted over a WAP session by a WAP Push message sent from the web service to the mobile terminal.
  • the problem with these solutions is nevertheless that authentication messages are separate from the web service, and a separate connection must be set up for them.
  • An authentication system using a mobile terminal does not enable connections between systems employing other types of connections. A completely separate system must be built, for example, for transferring a service between a digital TV and a home PC.
  • Session Initiation Protocol defines a procedure for transferring a session from one terminal to another.
  • the Mobile IP Protocol is used for mobility management between various IP-based connection links.
  • the actual IP address of a device is hidden in a separate server, and the address of the server is used for referring to the device. All traffic received at the server is transmitted to the actual IP address of the device.
  • the IP address of the device is known only to the server, and thus it can be changed flexibly, or the server may begin to address another device.
  • Liberty Alliance is a cooperation body of several players that develops open standards for network identity management and identity-based services. The solution set forth by Liberty Alliance utilizes authentication performed by one terminal to a system/service for connecting other services to a given terminal.
  • the object of the invention is to obviate the aforementioned drawbacks or at least substantially alleviate them.
  • the object of the invention is to provide a new type of method, system and application server in which a session related to a service implemented in an IP multimedia environment can be transferred from one terminal to another regardless of the type of the terminal or the protocol required.
  • the invention facilitates user authentication to different terminals.
  • the invention allows a user to use for instance a mobile terminal and a home computer or a digital TV simultaneously during the same service session.
  • the user can access the resources of a second terminal managed by him from a first terminal without separate authentication to the second terminal.
  • Such resources can be, for example, a file system or photographs taken with a mobile phone.
  • the invention is compared with the solution of Liberty Alliance, for example, the authentication made by a terminal to the IP multimedia system is utilized in the invention to connect services to terminals not registered to the IP multimedia system.
  • the invention also allows several simultaneously registered devices to be used intelligently.
  • the present invention relates to a method for transferring a service-related session in a data communications system.
  • the data communications system comprises an IP multimedia access network and an authentication system connected to it.
  • the IP multimedia access network refers for example to an IP Multimedia Subsystem (IMS) or a corresponding data communications network for carrying multimedia services.
  • IMS IP Multimedia Subsystem
  • the invention also relates to a system provided with means to implement the method described below and its different steps.
  • the data communications system comprises a first and a second terminal, of which the user uses the first one to connect to the IP multimedia access network. According to the method, the first terminal is used for authenticating to the IP multimedia access network and for establishing a session to the service.
  • a session and a service session refer to a session related to a service or service entity that is essential to the user.
  • the authentication method used for logging into the IP multimedia access network is not relevant to the invention but can be implemented with any known and reliable method.
  • the second terminal is associated with the user's information in an authentication system. With the information he has transmitted using the first terminal, a user authenticated to the IP multimedia access network can add a second terminal, preferably of a different type, to his user information. When the second terminal has been associated with the user, it can also be utilized in a service session. A service session is established between the second terminal and the service on the basis of the authentication information transmitted by the first terminal.
  • the user is identified by a user ID according to the SIP protocol.
  • the PDP Packet Data Protocol
  • the user may also have an active SIP session with the operator's service system.
  • the service session can be handled in various ways.
  • a service session can be transferred from the first terminal to the second terminal, or at least two terminals can be activated for a single service session.
  • Supported features can be defined for various terminals for instance by establishing a set of service parameters suitable for the terminals in the authentication system. Such service parameters can be used for modifying the user interface of the service.
  • association of a terminal with the user's information can be removed by another terminal associated with the user.
  • the invention is suitable for many different types of services, such as computer games and communications services.
  • a computer game for example, can be controlled with a mobile terminal or another terminal associated with the service.
  • a game session can be transferred for instance from a digital TV to a mobile terminal, whereby the game does not have to be discontinued even if the user has to leave a certain terminal.
  • An example of a communications service is a netmeeting-type service, where several terminals are connected to a session.
  • the first terminal by which the user sets up a connection to the IP multimedia access network, is connected to the access network over a wireless telephone connection, in which case the terminal is a mobile terminal, for example.
  • the terminal can also be connected otherwise wirelessly, e.g. by WLAN, Bluetooth or infrared technologies.
  • the invention also relates to an application server which is to be used with an IP multimedia system and which comprises means for processing user information, such as authentication information, a service parameter of a user interface and features of at least two terminals of different types.
  • the server comprises means for establishing a session with a service and a terminal. The service session is preferably established through the application server.
  • the server comprises means for associating at least two terminals with a user's information and means for establishing a session between a second terminal and the service on the basis of the authentication information transmitted from the IP multimedia system by a first terminal.
  • the terminals are preferably of different types.
  • the application server can comprise means for transferring a session between the first terminal and the service into a session between the second terminal and the service or for activating a session to a shared session between at least two terminals and the service.
  • the server can also comprise means for removing a terminal from a shared session by another associated terminal.
  • the server can also function as a proxy server during a session, whereby the user interface of the service can be modified either at the server or on the basis of information transmitted by the server in the service.
  • the server preferably comprises means for transmitting the features of a terminal that is active in the session to the service.
  • a terminal can also be removed from the service by means of the server, which enables chaining of sessions between different terminals.
  • the server comprises means for removing the association of a terminal with a user's information in response to a function of another terminal.
  • the server comprises means for controlling a computer game service or a communications service with a terminal connected to it over a session.
  • the user can thus continue to use the service regardless of his location.
  • the user must authenticate only once to the IP multimedia system; the association according to the invention attends to authorizing the terminals managed by the user to the service.
  • the user does not have to resort to authentication means, which are often difficult to use, and this contributes to a uniform user experience.
  • Figure 1 is a schematic view of the operating environment of the invention
  • Figure 2 is a schematic view of simplified messaging between different network elements
  • Figures 3a and 3b are schematic views of simplified messaging between different network elements
  • Figure 4 is a signalling diagram of an embodiment of the invention.
  • IMS IP Multimedia Subsystem
  • GPRS General Packet Radio Service
  • UMTS Universal Mobile Telecommunications System
  • IP Internet Protocol
  • 3GPP 3rd Generation Partnership Project
  • IMS per se is independent of the access network technology used. It can thus also be applied to WLAN (Wireless Local Area Network) or 2.5G mobile communications systems, for example.
  • WLAN Wireless Local Area Network
  • UMTS Universal Mobile Telecommunications Systems
  • the IP-based multimedia system (IMS, IP Multimedia Subsystem) is a platform developed for multimedia services. It allows information in different formats to be processed uniformly, and it also makes data transmission possible between different networks (e.g. mobile network and the Internet) .
  • IMS IP Multimedia Subsystem
  • Each registered IMS user has a Private User Identity, granted by the home network operator and used for example for customer authentication, registration, management and invoicing. This user identity is used only for user authentification within the home network; it is not used in the routing of SIP messages.
  • the user identity is a piece of permanent user information and remains valid as long as the user is a registered customer of the home network operator.
  • each user has one or more Public User Identities.
  • the Public User Identity is of the form SIP-URL (sip:user@home.fi) or E.164 number (1234567), and it allows other users to identify and contact the customer.
  • the user can use SIP URLs or TEL URLs for connecting.
  • the routing is implemented with SIP URI, as the setting up of the connection is based on SIP (Session Initiation Protocol) .
  • SIP Session Initiation Protocol
  • SIP Session Initiation Protocol
  • SIP Session Initiation Protocol
  • Figure 1 illustrates an IP multimedia access network IMS. In the following, the access network will also be referred to as an IMS system.
  • a first terminal TEl is connected to the IMS system wirelessly, e.g. over a GPRS connection.
  • the first terminal TEl is a mobile terminal with built-in support for IMS/SIP services.
  • a second terminal TE2 is connected to the IMS system for example over an ADSL (Asymmetric Digital Subscriber Line) connection maintained by the operator.
  • the second terminal TE2 is preferably also provided with support for IMS/SIP services.
  • the first terminal TEl is illustrated as a mobile terminal by way of example, whereas the second terminal TE2 is shown as a desk-top computer.
  • the invention is not limited to these examples, but the terminals can be any terminals that can be connected to the system.
  • the IMS system is connected to an authentication system AUTH, by which the user authenticates to the IMS system in accordance with the invention.
  • the IMS system also has a number of services SERV connected to it, such as a push-to-talk service or a file sharing service.
  • services SERV3 can also be provided by a third party.
  • the services SERV3 are connected to the authentication system AUTH of the IMS system, whereby the services can rely on the authentication and association made.
  • the invention allows a user's existing, active SIP session between a mobile device and the operator's IMS system to be transferred to another device, such as a computer at the end of a fixed broadband connection.
  • the user can also simultaneously use both a mobile terminal and a computer connected to a fixed network or a digital TV either with separate views or for transmitting information in the same service.
  • a service SERV/SERV3 started with the first terminal TEl can be continued without any interruptions with the second terminal TE2; only the user's own telephone number or SIP address is required for the transfer and authentication.
  • the user of the IMS terminal TE2 can access the resources of his terminal (e.g. file system or pictures taken with a mobile phone) for instance with a web browser without separate authentication from the second terminal TE2.
  • the system maintains the user's services at a SIP/application server in the IMS system, where the user is provided only with a single identity.
  • the user can use a service with different devices, such as a mobile phone, PC or digital TV, in such a manner that it suffices to perform the authentication once with a mobile terminal or another terminal.
  • the user can transfer between different terminals or use different terminals simultaneously simply by entering his own SIP address on a given web site or in a separate application, such as sonera.net. Separate authentication, such as a username and password, is not needed at this stage.
  • Separate authentication such as a username and password, is not needed at this stage.
  • the user's identity, the service and the service view are transferred seamlessly between the different terminals.
  • the PDP context is open. This allows messages to be transmitted immediately to the user's terminal unlike in the WAP-Push-based implementation.
  • FIG. 2 illustrates the user's authentication to the IMS system according to the invention, and a session transfer between terminals.
  • the numbered arrows illustrate the different method steps.
  • Step 21 The user connects to a web portal maintained by the operator, e.g. www.sonera.net, by the web browser of a computer TE2. From this site, the user sends a request to transfer the view and/or control of his mobile terminal to his web browser, using his own public identity.
  • the identity can be, for example, a MSISDN number or a SIP address.
  • Step 22 Having received the request, service logic SL maintained by the operator reserves the resources required and sends a session request to a telephone through the IMS network.
  • An example of a resource is a processor that converts the telephone view or control-related information to be compatible with the web browser.
  • Step 23 The mobile terminal TEl receives the session request and informs the user of the request received from the web browser to transfer the view/control to the web browser.
  • Step 24 The user accepts the session request, after which the mobile terminal TEl reserves the resources required for transferring the view/control and sends an acknowledgement request to the service logic through the IMS network.
  • Step 25 The service logic SL maintained by the operator receives the acknowledgement request and transmits the acknowledgement to the plug-in application of the web browser.
  • Step 26 The plug-in application of the web browser receives the acknowledgement request and starts the transmission/reception processors required for presentation of the view/control of the mobile terminal TEl.
  • Step 27 The view/control information is transmitted through the operator's service logic from equipment to other equipment.
  • Figure 3a illustrates steps 28 and 29, where the service logic SL maintained by the operator can send the mobile terminal TEl information related to the transfer session (e.g. invoicing information) or an enquiry to terminate the transfer session, if the session has lasted for a long time without any activity.
  • Figure 3b illustrates the removal of a terminal from association.
  • Step 30 The user cuts an existing transmission connection using the mobile terminal TEl.
  • Step 31 The mobile terminal TEl releases the reserved resources and sends a session termination request to the service logic SL through the IMS system.
  • the service logic SL receives the request and, as a result of it, releases the reserved resources and transmits the request to the plug-in application of the web browser.
  • Step 32 The plug-in application of the web browser terminates the session and releases the reserved resources.
  • the functions can also be described as follows: At first, the user authenticates to the IMS system with a mobile terminal, e.g. Nokia's N-Gage gaming device. The user begins to play and, after a while, starts a session transfer to a digital TV by logging into a service site, e.g. the address sonera.net, using the digital TV.
  • a service site e.g. the address sonera.net
  • Information on the equipment e.g. on the size of the screen, is transmitted at the same time.
  • the user does not authenticate separately at this stage but enters his own SIP address (e.g. sip: harri@sonera.net) .
  • the SIP address can be predefined in the settings, in which case the user only has to select the suitable option in the menu, e.g.: "Go to Sonera Game World” .
  • the transfer request is transmitted to the mobile terminal, which receives the notification "You are about to log into Sonera's service, OK?".
  • the user accepts the selection by pressing OK, whereby the digital TV access is linked to the IMS login and authentication performed through the mobile phone.
  • the operator and thereby also service providers have the screen and controls of both a digital TV and a mobile phone simultaneously in their use in the same service.
  • Service functionality transfers can be performed freely.
  • the user By clicking the text "Transfer N-Gage game view to digital TV", which can be shown to the user, the user can see the mobile game view on his digital TV.
  • the game can be controlled with a mobile terminal in such a manner that the control commands are routed through the operator and the game view is provided by the larger digital TV screen.
  • the same view can still be shown on the mobile terminal screen or, alternatively, some other game-related information, e.g. scores or a different view, can be displayed there.
  • the system and the application server according to the invention comprise means for managing terminal features.
  • a multimedia service can include, for example, a state machine, which stores information on screen features and on any other screens and controls.
  • a digital TV can be recorded as having a large screen but no controls; a mobile terminal can be recorded as having a web screen and game control features, and a home computer can be recorded as having, for example, a web screen and a keyboard.
  • Different terminals can thus have different screen and control features but the same login to the IMS system and association with the same identity.
  • the states of a state machine can be changed according to the requirements of the service.
  • the state machine actively transmits information to the systems and services and to the user.
  • Figure 4 shows a signalling diagram related to the service.
  • the elements of the signalling diagram are the browser BRWSR of a home computer, a service portal PORTAL, a call session control function P/I/S- CSCF (Proxy/Interrrogating/Serving - Call Session Control Function), and a first terminal TEl.
  • the signalling is divided into blocks referred to in the following.
  • Block 410 The user enters the portal PORTAL, which directs the session further to the confirmation page.
  • Block 420 The user enters his own SIP address or E.164 number in order to confirm his login performed with another terminal.
  • Block 430 The user accepts the session invitation in order to confirm authentication. At this stage, the user does not submit any personal passwords or other secret authentication information.
  • Block 440 A cookie, for example, is transmitted to indicate that the identity has been verified.
  • the following browser request contains this cookie.
  • Such a cookie is an auxiliary file of a web browser, and the information it contains can be used for controlling the connection between the browser and a server.
  • Block 450 A ticket (CDR, Call Detail Record) is generated for the processing of invoicing information.
  • Block 460 Invoicing information related to the service, for example, is transmitted.
  • Block 470 The user terminates, for example, the web session used. This step can also be sent in reverse order, in which case the user is informed of the termination of the session.
  • the above means are implemented with means known per se, e.g. with software components, wherefore they will not be described in greater detail.
  • the invention is not limited merely to the above embodiments but can be varied within the scope of the inventive idea of the invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Computer Security & Cryptography (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Multimedia (AREA)
  • Telephonic Communication Services (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé, un système et un serveur d'applications destinés au transfert d'une session liée à un service. Le système de transmission de données comprend un réseau d'accès multimédia IP (IMS) ; un système d'authentification (AUTH) connecté au réseau d'accès multimédia IP (IMS) ; un premier terminal (TE1), grâce auquel un utilisateur se connecte au réseau d'accès multimédia IP (IMS) ; et un second terminal (TE2) connecté au réseau d'accès multimédia IP (IMS). Le premier terminal (TE1) est utilisé pour s'authentifier auprès du réseau d'accès multimédia IP (IMS) et pour établir une session avec un service. Le second terminal (TE2) est associé aux informations d'utilisateur dans le système d'authentification (AUTH) et une session de service est établie entre le second terminal (TE2) et le service (SERV) sur la base des informations d'authentification transmises par le premier terminal (TE1).
PCT/FI2005/000294 2004-06-23 2005-06-22 Procede, systeme et serveur destines au transfert d'une session dans un systeme de transmission de donnees WO2006000624A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20040871 2004-06-23
FI20040871A FI20040871A (fi) 2004-06-23 2004-06-23 Menetelmä, järjestelmä ja palvelin session siirtämiseksi tietoliikennejärjestelmässä

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WO2006000624A1 true WO2006000624A1 (fr) 2006-01-05

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EP1330098A1 (fr) * 2002-01-21 2003-07-23 BRITISH TELECOMMUNICATIONS public limited company Procédé et système de communication pour le transfert des sessions Web

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US8543092B2 (en) 2006-06-24 2013-09-24 Huawei Technologies Co., Ltd. Access method of network terminals, access system and gateway
WO2008000192A1 (fr) * 2006-06-24 2008-01-03 Huawei Technologies Co., Ltd. Procédé d'accès au réseau de terminaux, système d'accès au réseau et équipement de passerelle
WO2008038200A2 (fr) * 2006-09-25 2008-04-03 Telefonaktiebolaget Lm Ericsson (Publ) Procédé et serveur pour le transfert d'une session multimédia d'un premier terminal à un second terminal
WO2008038200A3 (fr) * 2006-09-25 2008-07-03 Ericsson Telefon Ab L M Procédé et serveur pour le transfert d'une session multimédia d'un premier terminal à un second terminal
WO2008052488A1 (fr) * 2006-11-03 2008-05-08 Huawei Technologies Co., Ltd. Procede de traitement associe d'informations de service et serveur de service
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ES2316265A1 (es) * 2006-12-22 2009-04-01 France Telecom España S.A. Metodo para conmutar la recepcion de video entre una terminal movil y un dispositivo fijo del hogar, ambos con capacidades multimedia.
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