User plane location based service using message tunneling to support roaming
View Patent ↗An improved User Plane location based service (LBS) architecture and message flow, enabling seamless User Plane location based services even when a mobile or wireless device has roamed among different carrier networks. The present invention overcomes constraints inherent in the current protocol for roaming support defined by the Secure User Plane Location Service specification. A location system is enabled to automatically fall back to a message tunneling mechanism to ensure the security of a communication path between the location service system and the target wireless device, ensuring that the communication path is uninterrupted as the wireless device travels.
1. A method of providing user plane location services using message tunneling to support roaming, comprising:
establishing a user plane roaming communication between a roaming wireless device and a serving positioning server that serves a geographic area where said roaming wireless device is currently, via an intermediary home location server, said user plane roaming communication comprising at least one of: an RRLP based transaction, an IS-801 based transaction, and an RRC based transaction; and
providing an IP address of said serving positioning server to said roaming wireless device.
2. The method of providing user plane location services using message tunneling to support roaming according to claim 1 , wherein said user plane roaming communication comprises:
an Internet Protocol (IP) packetized message.
3. The method of providing user plane location services using message tunneling to support roaming according to claim 1 , wherein said user plane roaming communication comprises:
a short messaging system (SMS) message.
4. The method of providing user plane location services using message tunneling to support roaming according to claim 1 , wherein said user plane roaming communication comprises:
a text message.
5. The method of providing user plane location services using message tunneling to support roaming according to claim 1 , wherein:
said user plane roaming communication is established over a roaming interface (Lr) between said intermediary home location server and a visited location server that serves said geographic area.
6. The method of providing user plane location services using message tunneling to support roaming according to claim 1 , wherein said user plane roaming communication passes through a firewall protecting a visited location server that serves said geographic area.
7. The method of providing user plane location services using message tunneling to support roaming according to claim 1 , wherein said user plane roaming communication comprises:
an Lr request.
8. The method of providing user plane location services using message tunneling to support roaming according to claim 1 , wherein:
said user plane roaming communication includes an indicator that message tunneling is being used.
9. The method of providing user plane location services using message tunneling to support roaming according to claim 1 , wherein:
said intermediary home location server transmits a PDINIT message inside a Position Data message corresponding to a sessionid to a visited location server.
10. The method of providing user plane location services using message tunneling to support roaming according to claim 9 , wherein:
said PDINIT message is transmitted via a relevant roaming interface (Lr).
11. A home network location server to provide user plane location services using message tunneling to support roaming, comprising:
a roaming interface to establish a user plane roaming communication between a roaming wireless device and a serving positioning server that serves a geographic area where said roaming wireless device is currently, via an intermediary home location server, said user plane roaming communication comprising at least one of: an RRLP based transaction, an IS-801 based transaction, and an RRC based transaction; and
a home location services manager (H-LCS), associated with a home location server associated with said roaming wireless device, to obtain an IP address of said serving positioning server, and to transmit said IP address of said serving positioning server to said roaming wireless device.
12. A home network location server to provide user plane location services using message tunneling to support roaming according to claim 11 , wherein:
said IP address is a private IP address.
13. A home network location server to provide user plane location services using message tunneling to support roaming according to claim 11 , wherein:
said roaming interface passes through a firewall associated with a visited location server.
14. A home network location server to provide user plane location services using message tunneling to support roaming according to claim 11 , wherein said user plane roaming communication comprises:
a short messaging system (SMS) message.
15. A home network location server to provide user plane location services using message tunneling to support roaming according to claim 11 , wherein said user plane roaming communication comprises:
a text message.
16. A home network location server to provide user plane location services using message tunneling to support roaming according to claim 11 , wherein said user plane roaming communication comprises:
an Lr request.
17. A home network location server to provide user plane location services using message tunneling to support roaming according to claim 11 , wherein said user plane roaming communication comprises:
said user plane roaming communication includes an indicator that message tunneling is being used.
18. A home network location server to provide user plane location services using message tunneling to support roaming according to claim 11 , wherein:
said intermediary home location server transmits a PDINIT message inside a Position Data message corresponding to a sessionid to a visited location server.