Telefonaktiebolaget Lm Ericsson (Publ)

Maurizio Iovieno

Ralf Keller

Karl Norrman

Mats Näslund

Enrico De Luca

Alessandro Lala

Martin Israelsson

Anders Molander

Arpad Kormos

Raffaele De Santis

Roland Gustafsson

Amedeo Imbimbo

Patrik Dannebro

Ros-Marie Furtenback

Lorenzo Fiorillo

Francesco Attanasio

Biagio Maione

Pompeo Santoro

Elvira Villani

Anders Molnader

Árpád Kormos

Jorg Christian Ewert

This invention is related to S8 Home Routing (S8HR), under specification by the Global System for Mobile Communications (GSM) Association (GSMA) and 3Generation Partnership Project (3GPP). In a first aspect of the invention, a method is provided for enabling Lawful Interception (LI) when a wireless communication terminal performs S8HR roaming. The method comprises receiving, at a first LMISF from a first SGW serving the wireless communication terminal, IMS-related information of the wireless communication terminal required for performing LI, and providing, from the first LMISF upon the wireless communication terminal relocating to a second SGW serving the wireless communication terminal, the received IMS-related information of the wireless communication terminal required for performing LI, to a second LMISF associated with the second SGW.

LI for mobility in S8HR

A method and apparatus for providing access to an encrypted communication between a sending node and a receiving node to a Law Enforcement Agency (LEA). A Key Management Server (KMS) function stores cryptographic information used to encrypt the communication at a database. The cryptographic information is associated with an identifier used to identify the encrypted communication between the sending node and the receiving node. The KMS receives a request for Lawful Interception, the request including an identity of a Lawful Interception target. The KMS uses the target identity to determine the identifier, and retrieves the cryptographic information associated with the identifier from the database. The cryptographic information can be used to decrypt the encrypted communication. The KMS then sends either information derived from the cryptographic information or a decrypted communication towards the LEA. This allows the LEA to obtain a decrypted version of the communication.

Lawful interception of encrypted communications

A method, system, and a computer program product for reducing consumption of resources for lawful interception or retention data related to traffic concerning a 2G/3G target mobile connected to a telecommunications network interworking with Evolved Packet System is provided. A first parameter value in traffic for which lawful interception or data retention has been activated is detected at a first node. Based on at least the first parameter value, whether the traffic will be intercepted or retained at a second node crossed by the traffic is evaluated. If the second node will intercept or retain the traffic, the first node foregoes a lawful interception request or retention of intercepted data.

Lawful interception for 2G/3G equipment interworking with evolved packet system

A method for providing Law Enforcement Agencies in a telecommunications network with interception and/or retention data related to a target mobile node in a Proxy Mobile Internet Protocol domain connected to the telecommunications network through a Mobile Access Gateway, comprises the steps of configuring at least one of said Mobile Access Gateway and a Local Mobility Anchor to operate as Intercepting Control Elements or Data Retention sources.

Lawful interception for targets in a proxy mobile internet protocol network

The invention relates to a radio network controller (RNC) for receiving a LOCATION_REPORTING_CONTROL message and analyzing a value of a request type information element received in the LOCATION_REPORTING_CONTROL message. The RNC directly determines requested location information for a user equipment (UE) if the request information element indicates sending location information as a direct response to the LOCATION_REPORTING_CONTROL message or the RNC determines the requested location information if the UE changes the service area if the request information element indicates sending location information at a change of service area by the UE. The RNC then sends a LOCATION_REPORT message comprising the location information and the request type information element to at least one control node.

Method for the determination of a receiver for location information

The present invention relates to methods and arrangements in a telecommunication system to override current access rights. The telecommunication system comprises an Access Point IAP; MSC, SGSN associated with a Configuration Unit ICU. The method comprises receiving to the Access Point IAP; MSC, SGSN from the Configuration Unit ICU, a request to monitor a system member MS, SIM. The method further comprises receiving to the Access Point from the Configuration Unit, a request to override deprived access rights for the system member MS, SIM. The method further comprises overriding in the Access Point IAP; MSC, SGSN, the deprived access rights for the member.

Lawful interception of unauthorized subscribers and equipments

A method, system, and a computer program product for reducing consumption of resources for lawful interception or retention data related to traffic concerning a 2G/3G target mobile connected to a telecommunications network interworking with Evolved Packet System is provided. At least a first parameter value in data for which lawful interception or data retention has been activated is detected at a first node. Based on at least the first parameter value, whether the traffic is intercepted or retained at a second node crossed by the traffic in the same network is evaluated. If the second node is located downstream of the first node, lawful interception requests or intercepted data are filtered out.

A method and apparatus for performing Lawful Interception in a communications network. An Access Transfer Control Function (ATCF) receives an activation message instructing lawful interception. The activation message includes a subject identity. The ATCF sends intercept related information to a Mediation Function at a Lawful Intercept node. The intercept related information relates to a communication session in which the subject participates.

Lawful interception in a communications network

The invention relates to a method for distinguishing between LOCATION_REPORT messages to avoid ambiguities. Therefore, a value of an information element of request type is returned by a radio network controller, depending on an intended receiver of the location information. A control node receiving the information element value analyses said value and determines the receiver depending on the result of said analysis.

The present invention relates to a method to enhance resolution of location information of a mobile user in an Evolved Packet communication System. The system comprises a Mobility Management Entity that provides the user with at least one tracking area in which the user is able to move without location information being reported, The method comprises the following steps:

LI reporting of updated location information for EPS

The invention relates to a method for distinguishing between LOCATION REPORT messages to avoid ambiguities. Therefore, a value of an information element of request type is returned by a radio network controller, depending on an intended receiver of the location information. A control node receiving the information element value analyses said value and determines the receiver depending on the result of said analysis.

The present invention relates to methods and arrangements in a telecommunication system to generate Interception Related Information IRI related to positioning activities involving a mobile subscriber/equipment MSA. The system provides information to an Intercept configuration unit ICU, collected from an Intercept Access Point IAP; MSC, GMLC that is associated to the monitored subscriber/equipment. The method comprises the following steps: receiving to the Intercept Access Point IAP; MSC, GMLC from the Intercept configuration unit ICU, a request to monitor the mobile subscriber/equipment MSA. Registration in the Intercept Access Point IAP; MSC, GMLC, of a positioning activity involving the monitored subscriber/equipment. Delivering information related to the positioning activity, from the Intercept Access Point IAP; MSC, GMLC to the Law Enforcement Agency LEA.

Lawful interception of location based service traffic

The invention relates to the provision of deferred location reporting wherein the reporting is triggered by a trigger location change event. Trigger location change events are either related to a user of a cellular telecommunication network entering, leaving or changing an area, or to an area, which is entered or left by a user.

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Mercato San Severino, Italy

Maurizio Iovieno