EXCHANGE AND USE OF GLOBALLY UNIQUE DEVICE IDENTIFIERS FOR CIRCUIT-SWITCHED AND PACKET SWITCHED INTEGRATION

• US 20130156025A1
• Filed: 02/04/2013
• Published: 06/20/2013
• Est. Priority Date: 06/22/2005
• Status: Active Grant

• Current Assignee: Blackberry Limited
• Original Assignee: Blackberry Limited
• Inventors: ALLEN, Andrew, Buckley, Adrian
• Granted Patent: US 9,049,121 B2
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 2101/39 Globally routable user-agent uniform resource identifier [GRUU] for the session initiation protocol [SIP]
• CPC Class Codes: H04L 41/0846 based on copy from other elements
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1073 Registration or de-registration
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04M 7/0048 where the text-based messaging service is a Short Message Service
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42
• CPC Class Codes: H04M 7/0075 Details of addressing, directories or routing tables
• CPC Class Codes: H04W 4/12 Messaging; Mailboxes; Announcements

Abstract

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.

Claims

1. A method in a first telephony-enabled device of enabling packet switched communications with a second telephony-enabled device, the method comprising:

obtaining a first GUDI (globally unique device identifier); and

sending the first GUDI to the second telephony-enabled device via a first circuit switched message;

wherein if a second GUDI is received from the second telephony-enabled device, then packet-switched data is routable to the second telephony-enabled device using the second GUDI and packet-switched data is routable to the first telephony-enabled device using the first GUDI.

2-20. -20. (canceled)