Exchange and use of globally unique device identifiers for circuit-switched and packet switched integration

摘要

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.

主权项

1. A method in a mobile device for use in a network for indicating to a network component that a circuit switched (CS) call with the mobile device and a packet switched (PS) communication session originate from the same mobile device, the method comprising at the mobile device:
sending a cellular telephony protocol message including an International Mobile Equipment Identity (IMEI) in an information element of the cellular telephony protocol message; and sending a Session Initiation Protocol (SIP) message to the network, the SIP message including the IMEI in a format of a Unified Resource Name (URN) in an instance identifier (ID) contained within the SIP message.