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Method for WiFi Call Handoff for Dual-Mode Phone

IP.com Disclosure Number: IPCOM000131825D
Publication Date: 2005-Nov-21
Document File: 1 page(s) / 37K

Publishing Venue

The IP.com Prior Art Database

Abstract

When a dual-mode WiFi/GPRS phone comes out, there is a natural problem that comes when you get into a situation where you are using WiFi for a call, and you move to the edge of the coverage and out of coverage. There is currently no way of handing off a call from a WiFi call to a cellular call. The proposed solution is as follows. Instead of just dropping the call as you pass out of WiFi coverage, the mobile device could "recognize" that it was crossing out of a WiFi coverage area, and initiate a process that would: • ask the PBX to connect a call to the mobile device via the cell network using the cell phone, • transfer the call from the WiFi extension to the cellphone. This would provide an essentially seamless transition from WiFi to cell. It leverages the capabilities of the mobile device to provide a seamless user experience, but should not require any changes to the phone infrastructure.

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WIFI CALL HANDOFF

Method for WiFi Call Handoff for Dual-Mode Phone

Disclosed Anonymously

When a dual-mode WiFi/GPRS phone comes out, there is a natural problem that comes when you get into a situation where you are using WiFi for a call, and you move to the edge of the coverage and out of coverage. There is currently no way of handing off a call from a WiFi call to a cellular call.

The proposed solution is as follows. Instead of just dropping the call as you pass out of WiFi coverage, the mobile device could "recognize" that it was crossing out of a WiFi coverage area, and initiate a process that would:

 

  • ask the PBX to connect a call to the mobile device via the cell network using the cell phone,
  • transfer the call from the WiFi extension to the cellphone.

This would provide an essentially seamless transition from WiFi to cell. It leverages the capabilities of the mobile device to provide a seamless user experience, but should not require any changes to the phone infrastructure.