User plane location services over session initiation protocol (SIP)
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.
1 . A method for obtaining a location of a subscriber, comprising:
initiating a user plane location service procedure; and
if a session initiation protocol (SIP) session already exists, signaling a location request to a user plane enabled subscriber device via session initiation protocol (SIP).
2 . A method for obtaining a location of a subscriber, comprising:
initiating a user plane location service procedure via XMPP protocol.
3 . The method for obtaining a location of a subscriber according to claim 1 , wherein:
said location request is signaled to said user plane enabled subscriber device via a SIP INFO message.
4 . The method for obtaining a location of a subscriber according to claim 1 , wherein:
said location request uses SIP messaging as a transport message of said user plane location service procedure to overcome an issue otherwise introduced by network security.
5 . The method for obtaining a location of a subscriber according to claim 4 , wherein:
said issue otherwise introduced by network security is a firewall.
6 . The method for obtaining a location of a caller according to claim 1 , wherein:
a call relating to said caller is an emergency call.
7 . The method for obtaining a location of a subscriber according to claim 1 , wherein said initiating comprises:
sending an Instant Message to said user plane enabled subscriber device.
8 . The method for obtaining a location of a subscriber according to claim 1 , wherein:
said user plane enabled caller device is a voice over Internet Protocol (VoIP) phone.
9 . The method for obtaining a location of a subscriber according to claim 8 , wherein:
said VoIP phone is a wireless VoIP phone.
10 . The method for obtaining a location of a subscriber according to claim 1 , wherein:
said user plane location service procedure complies with a secure user plane for location (SUPL) standard defined by Open Mobile Alliance (OMA).
11 . Apparatus for obtaining a location of a subscriber, comprising:
means for initiating a user plane location service procedure; and
means for signaling a location request, if a session initiation protocol (SIP) session already exists, to a user plane enabled subscriber device via session initiation protocol (SIP).
12 . The apparatus for obtaining a location of a subscriber according to claim 11 , wherein:
said means for signaling said location request signals to said user plane enabled subscriber device via a SIP INFO message.
13 . The apparatus for obtaining a location of a subscriber according to claim 11 , wherein:
said means for signaling said location request uses SIP messaging as a transport message of said user plane location service procedure to overcome an issue otherwise introduced by network security.
14 . The apparatus for obtaining a location of a subscriber according to claim 13 , wherein:
said issue otherwise introduced by network security is a firewall.
15 . The apparatus for obtaining a location of a caller according to claim 11 , wherein:
a call relating to said caller is an emergency call.
16 . The apparatus for obtaining a location of a subscriber according to claim 11 , wherein said means for initiating comprises:
means for sending an Instant Message to said user plane enabled subscriber device.
17 . The apparatus for obtaining a location of a subscriber according to claim 11 , wherein:
said user plane enabled caller device is a voice over Internet Protocol (VoIP) phone.
18 . The apparatus for obtaining a location of a subscriber according to claim 17 , wherein:
said VoIP phone is a wireless VoIP phone.
19 . The apparatus for obtaining a location of a subscriber according to claim 11 , wherein:
said user plane location service procedure complies with a secure user plane for location (SUPL) standard defined by Open Mobile Alliance (OMA).
20 . A method for obtaining a location of a subscriber, comprising:
determining if a multimedia session is already established with a subscriber; and
obtaining updated location information of said subscriber via an existing session initiation protocol (SIP) session if a multimedia session is already established with said subscriber.
21 . Apparatus for obtaining a location of a subscriber, comprising:
means for determining if a multimedia session is already established with a subscriber; and
means for obtaining updated location information of said subscriber via an existing session initiation protocol (SIP) session if a multimedia session is already established with said subscriber.
22 . A method for determining whether a target device is in a conventional mobile network, comprising:
examining an identifier of a target device.
23 . A method for seamlessly interworking with a mobile network and a wireless IP network, comprising:
initiating a WAP Push/SMS message; and
initiating a presence service/Instant Message.
24 . The method for seamlessly interworking with a mobile network and said wireless IP network according to claim 23 , wherein:
said WAP Push/SMS message and said presence service/Instant Message are performed in parallel.
25 . The method for seamlessly interworking with a mobile network and said wireless IP network according to claim 23 , wherein:
said WAP Push/SMS message and said presence service/Instant Message are performed one after the other.