LI REPORTING OF UPDATED LOCATION INFORMATION FOR EPS

• US 20110096669A1
• Filed: 03/01/2010
• Published: 04/28/2011
• Est. Priority Date: 10/23/2009
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Iovieno, Maurizio, Villani, Elvira
• Granted Patent: US 8,274,932 B2
• Time in Patent Office: Days
• US Class Current: 370/241
• CPC Class Codes: H04L 63/306 intercepting packet switched data communications, e.g. Web, Internet or IMS communications
• CPC Class Codes: H04L 63/308 retaining data, e.g. retaining successful, unsuccessful communication attempts, internet access, or e-mail, internet telephony, intercept related information or call content
• CPC Class Codes: H04W 12/80 Arrangements enabling lawful interception [LI]
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 4/20 Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
• CPC Class Codes: H04W 60/04 using triggered events
• CPC Class Codes: H04W 8/02 Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks

Abstract

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:

• • receiving to the Mobility Management Entity, a location activation message valid for the user.
  • receiving to the Mobility Management Entity, a service request related to the user;
  • detecting in the Mobility Management Entity, user location information with higher resolution than the at least one tracking area level resolution;
  • sending from the Mobility Management Entity, a monitoring message comprising high resolution information of the user'"'"'s location within the at least one tracking area.

Claims

1. Method to enhance resolution of location information of a mobile user in an Evolved Packet communication System comprising 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, which method comprises steps of receiving to the Mobility Management Entity, a location activation message valid for the user and receiving to the Mobility Management Entity, a service request related to the user, which method comprises:

detecting in the Mobility Management Entity, user location information with higher resolution than the at least one tracking area level resolution;

sending from the Mobility Management Entity, a monitoring message comprising high resolution information of the user'"'"'s location within the at least one tracking area.

2. Method to perform high resolution location update for a mobile user according to claim 1, which service request is a NAS message.

3. Method to perform high resolution location update for a mobile user according to claims 1 which service request is triggered by the user.

4. Method to perform high resolution location update for a mobile user according to claims 1 wherein a Serving Gateway in the Evolved Packet communication System interconnects the Mobility Management Entity with a Packet Data Network Gateway, whereby the service request is triggered by the Network Gateway.

5. Method to perform high resolution location update for a mobile user according to claim 1, which monitoring message is an IRI REPORT.

6. Method to perform high resolution location update for a mobile user according to claim 1 whereby a tracking area list comprising the at least one tracking area is received by the Mobility Management Entity.

7. Method to perform high resolution location update for a mobile user according to claim 1, which system further comprises a monitoring system that is attached to the Mobility Management Entity via at least one first interface and at least one second interface, wherein the location information activation message is received from the monitoring system via the at least one first interface and the monitoring message is sent to the monitoring system via the at least one second interface.

8. Method to perform high resolution location update for a mobile user according to claim 7, which monitoring system is part of a Lawful Interception system.

9. Method to perform high resolution location update for a mobile user according to claim 8 which monitoring system is part of a Lawful Interception system and which at least one second interface comprises an X2 interface and HI2 interface over which an event type and location information or alternatively a failed reason is sent in case of failure is sent.

10. Method to perform high resolution location update for a mobile user according to claim 7 which monitoring system is part of a Data Retention system.

11. (canceled)

12. A node for enhancing resolution of location information of a mobile user in an Evolved Packet communication System, which node provides the user with at least one tracking area in which the user is able to move without location information being reported, which node comprises means to receive to the node, a location activation message valid for the user and means to receive to the node, a service request related to the user which node comprises:

means to detect in the node user location information with higher resolution than the at least one tracking area level resolution;

means to send from the node, a monitoring message comprising high resolution information of the user'"'"'s location within the at least one tracking area.

13. The node for enhancing resolution location update for a mobile user according to claim 12, which service request is a NAS message.

14. The node for enhancing resolution of location information of a mobile user according to claim 13, which system further comprises a monitoring system that is attached to the node via at least one first interface and at least one second interface.

15. The node for enhancing resolution of location information of a mobile user according to claim 14 which monitoring system is part of a Lawful Interception system and which at least one second interface comprises an X2 interface and an HI2 interface.