Mobile Fast Alerting

• US 20100331055A1
• Filed: 06/26/2009
• Published: 12/30/2010
• Est. Priority Date: 06/26/2009
• Status: Active Grant

• Current Assignee: RPX Clearinghouse LLC (RPX Corporation)
• Original Assignee: Nortel Networks Limited (Nortel Networks Corporation)
• Inventors: Lothrop, David, Sylvain, Dany
• Granted Patent: US 8,208,968 B2
• Time in Patent Office: Days
• US Class Current: 455/567
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04M 1/2535 adapted for voice communication over an Internet Protocol [IP] network Voice over Internet Protocol (VoIP) network equipment and services H04M7/006; implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP] H04L69/16
• CPC Class Codes: H04M 2201/14 Delay circuits; Timers
• CPC Class Codes: H04M 2207/18 wireless networks
• CPC Class Codes: H04M 3/02 Calling substations, e.g. by ringing selective calling H04Q
• CPC Class Codes: H04M 7/0033 Notification or handling of incoming calls by a computer
• CPC Class Codes: H04W 36/0022 for transferring data sessions between adjacent core network technologies
• CPC Class Codes: H04W 36/00226 wherein the core network technologies comprise IP multimedia system [IMS], e.g. single radio voice call continuity [SRVCC]
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 68/005 Transmission of information for alerting of incoming communication
• CPC Class Codes: H04W 76/12 Setup of transport tunnels

Abstract

Where a separate bearer channel is required to be set up in a mobile network to complete a hybrid VoIP call on the mobile network as specified in 3GPP ICS standard TR 23.892, an alerting process may be started after a provisionable delay rather than upon completion of the network call setup. This allows the mobile network user to start responding to the impending call before signaling of the call has been completed, so that the person can answer closer in time to completion of call signaling. Additionally, the person who placed the call may be provided with ringing feedback to make it sound like the call has been completed. The amount of delay between receipt of a SIP invite and the onset of an alerting process may be specified in the mobile handset or may be specified as a header in the SIP invite. The amount of delay may be fixed or adjusted based on feedback.

Claims

1. A method of initiating an alert process by a wireless phone associated with the establishment of a wireless telephone call prior to completion of a signaling process associated with establishing the wireless telephone call, the method comprising the steps of:

receiving, by the wireless phone, a session invite via the wireless packet network, the session invite requesting establishment of a wireless telephone call with the wireless phone on the wireless network;

initiating establishment of a bearer circuit call by the wireless phone on the wireless circuit network; and

initiating an alert process, by the wireless phone, upon expiration of a first delay timer, the first delay timer starting upon receipt of the session invite by the wireless phone.

2. The method of claim 1, wherein the session invite is a Session Initiation Protocol (SIP) invite.

3. The method of claim 1, wherein the bearer circuit call is implemented by a circuit subsystem agent on the wireless phone so that the bearer circuit is established using circuit-switched access for the voice media bearer.

4. The method of claim 3, wherein the session invite contains a Public Service Identifier Directory Number (PSI DN) associated with a Session Continuity and Control Application Server (SCC AS), and wherein the step of initiating establishment of the bearer circuit is implemented on the circuit-switched access to initiate establishment of a call to the PSI DN of the SCC AS.

5. The method of claim 4, wherein the session invite is a Session Initiation Protocol (SIP) invite.

6. The method of claim 1, wherein the step of initiating an alert process, by the wireless phone, comprises emitting at least one of an audible, visual, and tactile alert.

7. The method of claim 1, wherein the step of initiating an alert process comprises sending a SIP Ringing message, by the wireless phone on the wireless network.

8. The method of claim 1, wherein the session invite is received from a Packet Switched wireless network.

9. The method of claim 1, wherein the first delay timer is configured to provide a first amount of delay, and wherein the session invite specifies the first amount of delay.

10. The method of claim 9, wherein the first amount of delay is adjustable by the SCC AS based on feedback related to a speed with which a user of the wireless phone has historically answered other previously established phone calls after initiation of the alert process by the wireless phone.

11. The method of claim 10, wherein the amount of delay is adjusted on a per-user basis.

12. The method of claim 9, wherein the amount of delay is adjusted to cause the step of initiation of the alerting process to occur so that the user answers the mobile phone after completion of a signaling process associated with establishing the wireless telephone call.

13. The method of claim 1, wherein the first delay timer is configured to provide a first amount of delay, and wherein the wireless phone is programmed with the first amount of delay prior to receipt of the SIP invite.

14. The method of claim 13, wherein the wireless phone is configured to adjust the first amount of delay based on feedback related to a speed with which a user of the wireless phone has historically answered other previously established phone calls after initiation of the alert process by the wireless phone.

15. The method of claim 1, wherein the expiration of a first delay timer occurs before the completion of the signaling process associated with establishing the wireless telephone call.

16. A method of establishing a hybrid Voice over Internet Protocol (VoIP) call combining packet based signaling with circuit based media, the method comprising the steps of:

transmitting a session invite containing a header specifying an amount of time that a mobile telephone should wait between receipt of the SIP invite and initiation of an alerting process by the mobile telephone.

17. The method of claim 16, wherein the session invite is a Session Initiation Protocol (SIP) invite.

18. The method of claim 16, wherein the alerting process comprises sending a ringing response by the mobile telephone.

19. The method of claim 16, wherein the alerting process comprises emitting at least one of an audible, visual, and tactile alert.

20. The method of claim 16, further comprising the step of adjusting the amount of time that the mobile telephone should wait based on how fast a user associated with the mobile telephone answered previous telephone calls.