Using a mobile control channel to roam between networks

• US 20050129029A1
• Filed: 12/15/2003
• Published: 06/16/2005
• Est. Priority Date: 12/15/2003
• Status: Abandoned Application

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Creamer, Thomas E., Moore, Victor S., Katz, Neil A.
• Application Number:
  US10/736,137
• Publication Number:
  US 20050129029A1
• Time in Patent Office: Days
• US Class Current: 370/395.520
• CPC Class Codes: H04L 12/5692 Selection among different networks
• CPC Class Codes: H04W 36/0019 adapted for mobile IP [MIP]
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 80/00 Wireless network protocols or protocol adaptations to wireless operation
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

A method of roaming between mobile and wireless networks can include detecting a wireless network and querying the wireless network for an Internet Protocol address for a mobile device. The Internet Protocol address can be received. Accordingly, a message can be sent to a mobile switching center of the mobile network using a mobile network control channel. The message can instruct the mobile switching center to route voice data intended for the mobile device to the Internet Protocol address via a communicatively linked gateway and the wireless network.

Claims

1. A method of roaming between mobile and wireless networks comprising:

detecting a wireless network;

querying the wireless network for an Internet Protocol address for a mobile device;

receiving the Internet Protocol address; and

sending a message to a mobile switching center of the mobile network using a mobile network control channel, wherein the message instructs the mobile switching center to route voice data intended for the mobile device to the Internet Protocol address via a communicatively linked gateway and the wireless network.

2. The method of claim 1, further comprising receiving voice data from the gateway via the wireless network.

3. The method of claim 1, further comprising configuring the mobile switching center to route voice data intended for the mobile device to the Internet Protocol address via the communicatively linked gateway and the wireless network.

4. The method of claim 1, wherein prior to said detecting step, the mobile device is in communication with a different wireless network.

5. A method of roaming between mobile and wireless networks comprising:

communicating over a wireless network;

detecting that a mobile device is roaming outside a coverage area of the wireless network; and

sending a message to a mobile switching center of a mobile network using a mobile network control channel, wherein the message instructs the mobile switching center to route voice data intended for the mobile device to the mobile device using at least one mobile voice channel.

6. The method of claim 5, further comprising receiving voice data from the mobile switching center via the mobile network.

7. The method of claim 5, further comprising configuring the mobile switching center to route voice data for the mobile device to the mobile device via the at least one mobile voice channel.

8. A system for roaming between mobile and wireless networks comprising:

means for detecting a wireless network;

means for querying the wireless network for an Internet Protocol address for a mobile device;

means for receiving the Internet Protocol address; and

means for sending a message to a mobile switching center of the mobile network using a mobile network control channel, wherein the message instructs the mobile switching center to route voice data intended for the mobile device to the Internet Protocol address via a communicatively linked gateway and the wireless network.

9. The system of claim 8, further comprising means for receiving voice data from the gateway via the wireless network.

10. The system of claim 8, further comprising means for configuring the mobile switching center to route voice data intended for the mobile device to the Internet Protocol address via the communicatively linked gateway and the wireless network.

11. The system of claim 8, wherein prior to operation of said means for detecting, the mobile device is in communication with a different wireless network.

12. A system for roaming between mobile and wireless networks comprising:

means for communicating over a wireless network;

means for detecting that a device is roaming outside a coverage area of the wireless network; and

means for sending a message to a mobile switching center of a mobile network using a mobile network control channel, wherein the message instructs the mobile switching center to route voice data intended for the mobile device to the mobile device using at least one mobile voice channel.

13. The system of claim 12, further comprising means for receiving voice data from the mobile switching center via the mobile network.

14. The system of claim 12, further comprising means for configuring the mobile switching center to route voice data intended for the mobile device to the mobile device via the at least one mobile voice channel.

15. A machine readable storage, having stored thereon a computer program having a plurality of code sections executable by a machine for causing the machine to perform the steps of:

detecting a wireless network;

querying the wireless network for an Internet Protocol address for a mobile device;

receiving the Internet Protocol address; and

sending a message to a mobile switching center of the mobile network using a mobile network control channel, wherein the message instructs the mobile switching center to route voice data intended for the mobile device to the Internet Protocol address via a communicatively linked gateway and the wireless network.

16. The machine readable storage of claim 15, further comprising receiving voice data from the gateway via the wireless network.

17. The machine readable storage of claim 15, further comprising configuring the mobile switching center to route voice data intended for the mobile device to the Internet Protocol address via the communicatively linked gateway and the wireless network.

18. The machine readable storage of claim 15, wherein prior to said detecting step, the mobile device is in communication with a different wireless network.

19. A machine readable storage, having stored thereon a computer program having a plurality of code sections executable by a machine for causing the machine to perform the steps of:

communicating over a wireless network;

detecting that a mobile device is roaming outside a coverage area of the wireless network; and

sending a message to a mobile switching center of a mobile network using a mobile network control channel, wherein the message instructs the mobile switching center to route voice data intended for the mobile device to the mobile device using at least one mobile voice channel.

20. The machine readable storage of claim 19, further comprising receiving voice data from the mobile switching center via the mobile network.

21. The machine readable storage of claim 19, further comprising configuring the mobile switching center to route voice data intended for the mobile device to the mobile device via the at least one mobile voice channel.