User plane location services over session initiation protocol (SIP)

摘要

A method and mechanism to allow a location server to initiate a user plane location service (e.g., SUPL defined by OMA) procedure to a user plane enabled device via Instant Messaging, or alternatively, via an existing SIP session if a multimedia session is already established. The location request is signaled to the user plane enabled device via a SIP INFO message. The location request uses SIP messaging to overcome firewall and other network security issues. Location using SUPL over SIP may be provided about a caller making an E911 emergency call. An Instant Message may be sent to the user plane enabled device, e.g., a VoIP wireless phone.

主权项

1. A method comprising:
receiving, at a location server, a location request for a particular wireless device; generating, at the location server, an instant message for the particular wireless device in response to receiving the location request; and receiving, at the location server, location information for the particular wireless device via a User Plane Location Services session, wherein the location information is provided from the particular wireless device in response to receipt of the instant message.