WO2013185795A1 - Interdiction d'appels - Google Patents

Interdiction d'appels Download PDF

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Publication number
WO2013185795A1
WO2013185795A1 PCT/EP2012/060975 EP2012060975W WO2013185795A1 WO 2013185795 A1 WO2013185795 A1 WO 2013185795A1 EP 2012060975 W EP2012060975 W EP 2012060975W WO 2013185795 A1 WO2013185795 A1 WO 2013185795A1
Authority
WO
WIPO (PCT)
Prior art keywords
identity
premium rate
sip invite
invite message
indicator
Prior art date
Application number
PCT/EP2012/060975
Other languages
English (en)
Inventor
Magnus HALLENSTÅL
Afshin Abtin
Original Assignee
Telefonaktiebolaget L M 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 L M Ericsson (Publ) filed Critical Telefonaktiebolaget L M Ericsson (Publ)
Priority to PCT/EP2012/060975 priority Critical patent/WO2013185795A1/fr
Publication of WO2013185795A1 publication Critical patent/WO2013185795A1/fr

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Classifications

    • 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
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1063—Application servers providing network services
    • 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
    • H04L65/1096—Supplementary features, e.g. call forwarding or call holding
    • 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
    • H04L65/1069—Session establishment or de-establishment

Definitions

  • the present invention relates to a method of implementing call barring using an IP Multimedia Subsystem. It may be used for, although is not necessarily limited to, use with a roaming endpoint for a IP Multimedia Subsystem subscriber.
  • IP Multimedia Subsystems provide a combination of voice, video, messaging, data, etc, within the same session.
  • IMS IP Multimedia Subsystems
  • IMS is the technology defined by the Third Generation Partnership Project (3GPP) to provide IP Multimedia services over mobile and converged communication networks. IMS provides features to enhance the end user person-to-person communication experience through the integration and interaction of services. IMS allows enhanced person-to-person (client-to-client) as well as person-to-content (client-to-server) communications over an IP-based network.
  • the IMS makes use of the Session Initiation Protocol (SIP) to set up and control calls or sessions between user terminals (or user terminals and Application Servers).
  • SIP Session Initiation Protocol
  • SDP Session Description Protocol carried by SIP signalling is used to describe and negotiate the media components of the session.
  • CSCFs Call Session Control Functions
  • CSCFs handle session establishment, modification and release of IP multimedia sessions using the SIP/SDP protocol suite.
  • 3GPP TS23.228 describes the logical nodes P-CSCF, l-CSCF, S-CSCF, E-CSCF and BGCF.
  • the S- CSCF conforms to 3GPP TS 24.229 and performs session control services for User Equipments (UEs). It maintains the session state to support the services, and performs the following functions:
  • the S-CSCF performs SIP routing according to 3GPP routing procedures. For inbound SIP traffic, the S-CSCF will route sessions to that P-CSCF whose address was stored during subscriber registration. For outbound SIP traffic, the S-CSCF interrogates a DNS/ENUM to determine how the call should be routed. The S-CSCF interacts with the Home Subscriber Server (HSS) to obtain subscriber data and to exchange authentication information using DIAMETER messages.
  • HSS Home Subscriber Server
  • the IMS allows IMS subscribers to initiate sessions with non-IMS users, including users connected to conventional telephone networks. IMS subscribers may also be allocated addresses such as telephone numbers to allow for incoming calls to be made to these subscribers via external networks. This results in increased usage of new multimedia services and therefore higher revenues for operators.
  • Each UE in an IMS may preferentially use specific Application Servers for executing originating services, terminating services or any other services required in a communication or call session. These preferences are linked to each UE and stored in an Initial Filter Criteria (iFCs) located in the HSS of a user's home network.
  • iFCs Initial Filter Criteria
  • a user's iFCs are downloaded to the S-CSCF upon registration of the user with the S-CSCF, or upon receiving a particular service demand.
  • SIP request such as a SIP INVITE signal
  • the S-CSCF checks user agent A's iFC to determine which Application Server should execute outgoing services for A.
  • user B may always use a particular Application Server to execute terminating services.
  • an iFC for user B may specify that two distinct Application Servers are to be used for terminating services handled for B, and originating services handled for B, respectively.
  • an Application Server for an originating UE may be to implement call barring services, for example to prevent a user from connecting to premium rate services.
  • a user's UE is not connected directly to the home network, for example if they are using a laptop or a cellular phone in a different geographical location to access a session. In this case they will wish to be able to access the services regardless of their geographical location.
  • roaming is enabled in an IMS.
  • a user's UE connects to a P-SCSF in the visited network (i.e. the network where they have an IP connection).
  • the P-CSCF connects to the user's S- CSCF in the user's home network and the S-CSCF acts to perform session control for that user.
  • FIG. 1 An example of a network where call roaming occurs is illustrated in Figure 1 .
  • the Application Server in the home network must be aware of all of the relevant premium numbers across the world. This can be time consuming to configure and, if the list is not up to date then connections to premium rate services may inadvertently occur.
  • a Proxy-Call Session Control Function P-CSCF.
  • the P-CSCF includes an input to receive a SIP INVITE message from a UE.
  • the SIP INVITE message includes an identity of a terminating endpoint.
  • the P-CSCF also includes a memory including an identity of a premium rate service and a processor to compare the identity of the terminating endpoint to the identity of the premium rate service. If the identity of the terminating endpoint is the same as the identity of the premium rate service, the P- CSCF inserts an indicator into the SIP INVITE message to produce a modified SIP INVITE message. The P-CSCF may then transmit the modified SIP INVITE message from an output.
  • a P-CSCF in a visited network can indicate whether the terminating identity relates to a premium rate service in the visited network. This means that network each need only maintain a database of identities associated with premium rate services in their network as, if the terminating identity relates to a premium rate service in the visited network this will be indicated in the SIP INVITE message.
  • the memory of the P-CSCF may optionally include identities for a plurality of premium rate services, each premium rate service relating to one or more of a plurality of types of premium rate services.
  • the inserted indicator will relate to one of the plurality of types of premium rate service or may be a general indicator indicating that connections to any type of premium rate service are to be denied. This allows call connections to be denied selectively according to the types of services a user is barred from connecting to.
  • a Proxy-Call Session Control Function receives a SIP INVITE message from a UE.
  • the SIP INVITE message includes an identity of a terminating endpoint.
  • the method includes comparing the identity of the terminating endpoint to the identity of a premium rate service stored in a memory of the P-CSCF.
  • An indicator is inserted into the SIP INVITE message to produce a modified SIP INVITE message if the identity of the terminating endpoint is the same as the identity of the premium rate service.
  • the modified SIP INVITE message is transmitted.
  • a P-CSCF in a visited network can indicate whether the terminating identity relates to a premium rate service in the visited network. This means that each network need only maintain a database of identities associated with premium rate services in their network as, if the terminating identity relates to a premium rate service in the visited network this will be indicated in the SIP INVITE message.
  • the memory includes identities for a plurality of premium rate services and the premium rate services relate to a plurality of types of premium rate services.
  • inserting an indicator into the SIP INVITE message takes the form of inserting an indicator to one of the plurality of types of premium rate service. This allows call connections to be denied selectively according to the types of services a user is barred from connecting to.
  • an Application Server includes an input to receive an SIP INVITE message.
  • the SIP INVITE message includes an originating endpoint identity, a terminating endpoint identity and an indicator that the terminating endpoint is associated with a premium rate service.
  • the Application Server also includes a memory including a subscriber profile associated with the originating endpoint identity.
  • a processor is included in the Application Server and generates a reject message if it determines, from the subscriber profile, that connections from the subscriber associated with the originating endpoint identity to premium rate services are to be denied and, from the indicator, that the terminating endpoint is associated with a premium rate service.
  • the Application Server further includes an output to transmit the reject message in order to terminate the call.
  • the indicator in the SIP INVITE message may specify a type of premium rate service.
  • the processor of the Application Server determines from the subscriber profile that connections from endpoints associated with the subscriber to terminating identities associate with the type of premium rate service in the indicator should be barred. This allows call connections to be denied selectively according to the types of services a user is barred from connecting to.
  • the processor of the Application Server may alternatively determine, from the indicator or an absence of an indicator that the identity of the terminating endpoint is not an identity associated with a premium rate service. This enables the Application Server to automatically continue with connection initiation procedures without having to further consult the subscriber profile to determine whether call barring is implemented for that subscriber.
  • An input of the Application Server may receive a request from the subscriber or a third party to include in the subscriber's profile an indication to deny connections to premium rate services or to deny connections to one or more types of premium rate services.
  • the third party may be, for example, a telephony operator
  • the Application Server may be a multimedia telephony service (MMTel AS), telephony Application Server, or any other related Application Server.
  • MMTel AS multimedia telephony service
  • telephony Application Server or any other related Application Server.
  • a method of implementing call barring includes receiving a SIP INVITE message at an Application Server.
  • the SIP INVITE message includes an originating endpoint identity, a terminating endpoint identity and an indicator that the terminating endpoint is associated with a premium rate service.
  • the method further includes determining, from a subscriber profile associated with the originating endpoint identity, if the subscriber associated with the originating endpoint identity has selected to deny connections to premium rate services. If the subscriber associated with the originating endpoint identity has selected to deny connections to premium rate services and the indicator indicates that the terminating endpoint is associated with a premium rate service then a reject message is generated and transmitted. In this way the Application Server can easily determine whether or not to deny the connection requested in the SIP INVITE message.
  • the indicator may specify a type of premium rate service in which case the Application Server performs the step of determining from the subscriber profile whether the subscriber has selected to deny connections to the type of premium rate service in the indicator and generates a reject message if the subscriber associated with the originating endpoint identity has selected to deny connections to a type of premium rate service presented in the indicator.
  • the method may further include the step of determining, from the indicator or an absence of an indicator that the identity of the terminating endpoint is not an identity associated with a premium rate service.
  • This enables the Application Server to automatically continue with connection initiation procedures without having to further consult the subscriber profile to determine whether call barring is implemented for that subscriber.
  • an Application Server includes an input to receive an SIP INVITE message, the SIP INVITE message including an originating endpoint identity.
  • the Application Server further includes a memory including a subscriber profile associated with the originating endpoint identity and a processor.
  • the processor determines, from the subscriber profile associated with the originating endpoint identity, that connections from the subscriber associated with the originating endpoint identity to premium rate services are to be denied. If connections to premium rate services by the subscriber are to be denied then the Application Server inserts an indicator into the SIP INVITE message to produce a modified SIP INVITE message. Finally, the Application Server transmits the modified SIP INVITE message from an output. By inserting an indicator into the SIP INVITE message to indicate whether the connections to premium rate services are to be denied the Application Server does not need to perform a look-up to determine whether or not the terminating identity in the SIP INVITE message relates to premium rate services.
  • the processor of the Application Server may further determine from the subscriber profile indicates whether connections between an endpoint associated with the subscriber and a type of premium rate service are to be denied. In such a case the indicator inserted into the SIP INVITE message specifies the type of premium rate service. Optionally, the indicator may specifically indicate that connections to any type of premium rate service are to be denied. Further the processor may also be configured to determine, from the subscriber profile that connections to premium rate services are allowed and include an indicator that connections for the subscriber to premium rate services should be allowed.
  • the Application Server may include an input to receive a request from a subscriber or a third party to include in a subscriber profile indications to deny connections to premium rate services. The third party may be a telephony operator.
  • a method of implementing call barring includes the step of receiving a SIP INVITE message, the SIP INVITE message including an originating endpoint identity.
  • a subscriber profile associated with the originating endpoint identity is used to determine that connections from the subscriber associated with the originating endpoint identity to premium rate services are to be denied. If the subscriber associated with the originating endpoint identity has selected to deny connections to premium rate services an indicator is inserted into the SIP INVITE message to produce a modified SIP INVITE message. The modified SIP INVITE message is then transmitted.
  • a transit roaming function TRF.
  • the TRF includes an input, a memory and a processor.
  • the input receives a SIP INVITE message, the SIP INVITE message including an identity of an originating endpoint, an identity of a terminating endpoint and an indicator that connections from the subscriber associated with the originating endpoint identity to premium rate services are to be denied.
  • the memory includes an identity of a premium rate service.
  • the processor is arranged to compare the identity of the terminating endpoint to the identity of the premium rate service and, if the identity of the terminating endpoint is the same as the identity of the premium rate service, generate a reject message.
  • the indicator in the SIP INVITE message may specify a type of premium rate service and the memory of the TRF include identities for a plurality of premium rate services, the premium rate services relating to a plurality of types of premium rate services.
  • the processor of the TRF generates the reject message if the type of premium rate service associated with the identity of the terminating endpoint in the memory is the same as the type of premium rate service specified in the indicator.
  • the input of the TRF may also be able to receive an SIP INVITE message including an indicator that connections to premium rate services for the subscriber associated with the originating endpoint are not to be denied. This means that the TRF does not need to determine whether the terminating endpoint relates to a premium rate service but can continue with call set-up.
  • Figure 1 is a block diagram of elements in a home network and a visited network including an IMS;
  • Figure 2 illustrates the paths of signals according in a first embodiment of the invention
  • Figure 3 is a flow diagram of the first embodiment of the invention
  • Figure 4 illustrates a P-CSCF for use in the first embodiment of the invention
  • FIG. 5 illustrates an MMTel Application Server for use in the first embodiment of the invention
  • Figure 6 illustrates the paths of signals according to a second embodiment of the invention
  • FIG. 7 is a flow diagram of the second embodiment of the invention.
  • FIG. 8 illustrates an MMTel Application Server for use in the first embodiment of the invention.
  • Figure 9 illustrates a transit routing function for use in the first embodiment of the invention.
  • a UE 12 of a user registered with an IMS is connected to a visited network.
  • the UE 12 transmits a SIP INVITE to the P-CSCF 20 in the visited network.
  • the P-CSCF 20 has a memory 24 which stores identities of premium rate services for the visited network and a processor 26.
  • the P-CSCF receives the SIP INVITE message at an input 22.
  • the P-CSCF 20 determines whether the terminating identity in the SIP INVITE message is a number relating to a premium rate service using the identities of premium rate services stored in the memory 24.
  • the P-CSCF 20 determines that the terminating identity does not relate to that of a premium service then the SIP INVITE message is transmitted from the output 28 to the CSCF of the home network in the usual manner.
  • the processor 26 inserts an indicator into the SIP INVITE message indicating that the terminating identity relates to a premium rate service.
  • An example of such a message is illustrated in Figure 2.
  • the modified SIP INVITE message is transmitted from the output 26 to the CSCF of the home network in step 3.
  • the S-CSCF of the home network receives the modified SIP INVITE message it examines the initial Filter Criteria (iFC) for the user that the UE is associated with.
  • the iFCs for the user includes an iFC for an MMTel Application Server 30 requiring invocation of the MMTel Application Server 30 when a SIP INVITE message is received by the S-CSCF.
  • the S-CSCF forwards the modified SIP INVITE message to the MMTel Application Server 30 in step 4 of the method.
  • the MMTel Application Server 30 receives the modified SIP INVITE at the input and the processor 36 determines whether the SIP INVITE message includes an indication that the terminating identity is for a premium service. If the SIP INVITE message includes no indication then the MMTel Application Server carries out any other processing required by the user and transmits the SIP INVITE message from the output 38 to the CSCF 16. If the SIP INVITE includes an indication then in Step 5 the MMTel Application Server will also determine from the user's subscriber profile stored in the memory 34 whether connections to premium rate services are barred for the user.
  • the MMTel Application Server 30 transmits a reject message to the CSCF 16 of the home network in step 6.
  • the S-CSCF then terminates the call initiation sequence in step 7.
  • the call initiation sequence may be terminated using any suitable method.
  • the second embodiment of the invention is illustrated in Figures 6 and 7.
  • UE 12 which is registered with an IMS transmits a SIP INVITE message to a P-CSCF 20 in the visited network.
  • the P-CSCF determines the CSCF in for the home network and in step 3, the P-CSCF 20 forwards the SIP INVITE message to the CSCF 16 of the home network according to any suitable method.
  • the S-CSCF of the home network upon receiving the SIP INVITE message examines the initial Filter Criteria (iFC) for the user that the UE is associated with.
  • iFC initial Filter Criteria
  • the iFCs for the user includes an iFC for an MMTel Application Server 30 requiring invocation of the MMTel Application Server 30 when a SIP INVITE message is received by the S-CSCF.
  • the S-CSCF forwards the modified SIP INVITE message to the MMTel Application Server 30 in step 4 of the method.
  • the MMTel Application Server 40 includes a number of subscriber profiles in the memory, amongst other information a subscriber profile may include information on whether connections to premium rate services are barred for the user.
  • the processor 46 of the MMTel Application Server 40 determines from the subscriber profile whether connections to premium rate services are barred for the user.
  • the SIP INVITE message is transmitted from the output 48 of the MMTel Application Server 40 to the CSCF 16 and a call connection can continue according to any suitable method.
  • the processor 46 modifies the SIP INVITE message to include an indicator that connections to premium rate services are barred for the users (Step 5).
  • the modified SIP INVITE message is transmitted from the output 26 to the CSCF in step 6.
  • An example of such a modified SIP INVITE message is illustrated in Figure 6.
  • step 7 the CSCF 16 upon receiving the modified SIP INVITE message transmits the modified SIP INVITE message to a transit routing function (TRF) 50 such as that illustrated in Figure 9.
  • TRF 50 may be implemented on any suitable device, for example, it may be implemented on a device as part of the l-CSCF.
  • the TRF 50 includes a memory 54 which stores identities of premium rate services for the visited network and a processor 56.
  • the TRF 50 receives the SIP INVITE message at an input 52.
  • processor 56 of the TRF 50 determines whether the SIP INVITE message includes an indication that the connections to premium rate services are barred for the subscriber. If the SIP INVITE message includes no such indication then the TRF continues call set up in the usual manner. If the SIP INVITE includes an indication then in Step 8 the TRF 50 will also determine whether the terminating identity in the SIP INVITE message is a number relating to a premium rate service using the identities of premium rate services stored in the memory 54.
  • the TRF 50 terminates the call initiation sequence in step 9.
  • the call initiation sequence may be terminated using any suitable method.
  • the Application Server may be a multimedia telephony application server, a telephony server or any other suitable type of application server.
  • the subscriber profile may include information on barred services entered by the subscriber or by the operator of the home network.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Telephonic Communication Services (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un procédé d'interdiction d'appels à la suite d'une fonction de contrôle de session d'appel proxy recevant un message SIP INVITE depuis un équipement d'utilisateur UE, le message SIP INVITE incluant une identité d'un point d'extrémité de terminaison. La P-CSCF compare l'identité du point d'extrémité de terminaison à l'identité de services à revenus partagés stockés dans une mémoire de la P-CSCF et, si l'identité du point d'extrémité de terminaison est la même qu'une identité du service à revenus partagés stocké dans la mémoire, insère un indicateur dans le message SIP INVITE pour produire un message SIP INVITE modifié. Lorsque le message SIP INVITE modifié est reçu sur un serveur d'application, le serveur d'application détermine, à partir d'un profil d'abonné associé à l'identité du point d'extrémité d'origine, si l'abonné associé à l'identité du point d'extrémité d'origine a choisi de refuser les connexions aux services à revenus partagés. Si l'abonné a choisi de refuser les connexions et qu'un indicateur est inclus dans le message SIP INVITE, alors le serveur d'application entraîne le refus de la connexion d'appel demandée dans le message SIP INVITE. Dans un autre procédé, le serveur d'application reçoit un message SIP INVITE non modifié et détermine, à partir d'un profil d'abonné associé à l'identité du point d'extrémité d'origine, si l'abonné associé à l'identité du point d'extrémité d'origine a choisi de refuser les connexions aux services à revenus partagés. Si l'abonné a choisi de refuser les connexions aux services à revenus partagés, le serveur d'application insère alors un indicateur dans le message SIP INVITE pour indiquer que les connexions doivent être refusées. Cet indicateur peut être utilisé ensuite par une autre fonction pour déterminer si oui ou non la requête de connexion d'appel doit être refusée dans le message SIP INVITE.
PCT/EP2012/060975 2012-06-11 2012-06-11 Interdiction d'appels WO2013185795A1 (fr)

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PCT/EP2012/060975 WO2013185795A1 (fr) 2012-06-11 2012-06-11 Interdiction d'appels

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114979006A (zh) * 2021-10-14 2022-08-30 中移互联网有限公司 一种会话初始协议sip消息处理方法及其消息处理系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SIVACHELVAN CISCO SYSTEMS C ET AL: "The Call Type tel URI Parameter for Session Initiation Protocol (SIP); draft-sivachelvan-iptel-call-type-00.txt", 20060906, 6 September 2006 (2006-09-06), XP015047269, ISSN: 0000-0004 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114979006A (zh) * 2021-10-14 2022-08-30 中移互联网有限公司 一种会话初始协议sip消息处理方法及其消息处理系统
CN114979006B (zh) * 2021-10-14 2023-09-05 中移互联网有限公司 一种会话初始协议sip消息处理方法及其消息处理系统

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