Exchange and use of globally unique device identifiers for circuit-switched and packet switched integration
According to one aspect, a system and method of exchanging GRUUs (Globally Routed User Agent URI (Uniform Resource Identifier)) between a first telephony-enabled device and a second telephony enabled device using a circuit-switched message is provided. Once exchanged, the telephony enabled devices can exchange SIP (session initiated protocol) communications routed by the GRUUs. Any one of the telephony-enabled devices can add a media component to the SIP communications. According to another aspect, a system and method of generating GRUUs is provided. According to another aspect, a system and method of handing off communications to a packet switched network from a circuit switched network is provided.
1. A method of obtaining a globally unique device identifier [GUDI] for a device, the method comprising:
generating an instance identifier [ID] using an equipment identifier that uniquely identifies the device, the instance ID having a form of a uniform resource name [URN];
sending the instance ID generated in a session initiation protocol [SIP] register request to a SIP registrar; and
receiving in a SIP 200 OK response a GUDI, the GUDI being in a form of a SIP uniform resources identifier [URI], including at least a user identity, a domain name, and a value in the form of a URN generated from a transformation using at least a portion of the equipment identifier.
2. The method of claim 1 wherein sending the instance ID generated in the SIP register request comprises sending the instance ID as a Contact header field parameter of the SIP register request.
3. The method of claim 1 wherein the GUDI is a GRUU (Globally Routable User Agent URI (Uniform Resource Identifier)).
4. The method of claim 1 wherein the device is a wireless device.
5. A non-transitory computer readable medium having computer executable instructions stored thereon for execution on a processor of a device so to obtain a globally unique device identifier [GUDI] by:
generating an instance identifier [ID] using an equipment identifier that uniquely identifies the device, the instance ID having a form of a uniform resource name [URN];
sending the instance ID generated in a session initiation protocol [SIP] register request to a SIP registrar; and
receiving in a SIP 200 OK response a GUDI, the GUDI being in a form of a SIP uniform resources identifier [URI], including at least a user identity, a domain name, and a value in the form of a URN generated from a transformation using at least a portion of the equipment identifier.
6. A device configured to obtain a globally unique device identifier [GUDI], the device comprising:
a processor; and
a GUDI obtaining function configured to:
generate an instance identifier [ID] using an equipment identifier that uniquely identifies the device, the instance ID having a form of a uniform resource name [URN];
send the instance ID generated in a session initiation protocol [SIP] register request to a SIP registrar; and
receive in a SIP 200 OK response a GUDI, the GUDI being in a form of a SIP uniform resource identifier [URI], including at least a user identity, a domain name, and a value in the form of a URN generated from a transformation using at least a portion of the equipment identifier.
7. The device of claim 6 wherein the GUDI obtaining function is configured to send the instance ID generated as a Contact header field parameter of the SIP register request.
8. The device of claim 6 wherein the GUDI is a GRUU (Globally Routable User Agent URI (Uniform Resource Identifier)).
9. The device of claim 6 wherein the device is a wireless device.
10. A method for generating a globally unique device identifier [GUDI] for a device, the method comprising:
receiving, by a session initiation protocol [SIP] registrar, a SIP register request comprising an instance identifier [ID] generated using an equipment identifier that uniquely identifies the device, the instance ID having a form of a uniform resource name [URN];
generating a GUDI based on the instance ID received, the GUDI being in a form of a SIP uniform resources identifier [URI], including at least a user identity, a domain name, and a value in the form of a URN generated from a transformation using at least a portion of the equipment identifier; and
sending, in a SIP 200 OK response, the GUDI generated to the device.
11. The method of claim 10 wherein receiving the instance ID comprises receiving the instance ID as a Contact header field parameter of the SIP register request.
12. The method of claim 10 wherein the GUDI is a GRUU (Globally Routable User Agent URI (Uniform Resource identifier)).
13. The method of claim 10 wherein the device is a wireless device.
14. A non-transitory computer readable medium having computer executable instructions stored thereon for execution on a processor of a packet-switched network element so as to generate a globally unique device identifier [GUDI] for a device by:
receiving, by a session initiation protocol [SIP] registrar, a SIP register request comprising an instance identifier [ID] generated using an equipment identifier that uniquely identifies the device, the instance ID having a form of a uniform resource name [URN];
generating a GUDI based on the instance ID received, the GUDI being in a form of a SIP uniform resources identifier [URI], including at least a user identity, a domain name, and a value in the form of a URN generated from a transformation using at least a portion of the equipment identifier; and
sending, in a SIP 200 OK response, the GUDI generated to the device.
15. A session initiation protocol [SIP] registrar configured to generate a globally unique device identifier [GUDI] for a device, the SIP registrar comprising:
a processor; and
a GUDI generation function configured to:
receive a SIP register request comprising an instance identifier [ID] generated using an equipment identifier that uniquely identifies the device, the instance ID having a form of a uniform resource name [URN];
generate a GUDI based on the instance ID received, the GUDI being in a form of a SIP uniform resources identifier [URI], including at least a user identity, a domain name, and a value in the form of a URN generated from a transformation using at least a portion of the equipment identifier; and
send, in a SIP 200 OK response, the GUDI generated to the device.
16. The SIP registrar of claim 15 wherein the GUDI generation function is configured to receive the instance ID as a Contact header field parameter of the SIP register request.
17. The packet-switched network element of claim 15 wherein the GUDI is a GRUU (Globally Routable User Agent URI (Uniform Resource Identifier)).