Invention Grant
- Patent Title: Method, system and apparatus for managing call handoff
- Patent Title (中): 用于管理呼叫切换的方法,系统和装置
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Application No.: US13090361Application Date: 2011-04-20
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Publication No.: US08718019B2Publication Date: 2014-05-06
- Inventor: Ximing Zeng , Jerod David Klink , Christopher Edward Prest
- Applicant: Ximing Zeng , Jerod David Klink , Christopher Edward Prest
- Applicant Address: CA Waterloo, Ontario
- Assignee: BlackBerry Limited
- Current Assignee: BlackBerry Limited
- Current Assignee Address: CA Waterloo, Ontario
- Agency: Perry + Currier Inc.
- Main IPC: H04W4/00
- IPC: H04W4/00

Abstract:
A method, system and apparatus for managing call handoff are provided. A mobile device engaged in a first media session over a first transport determines a second transport is available. A reflected media session is established via an echo server over the second transport. Quality of the reflected media session is evaluated by determining a call metric based on call transport data received at the mobile device from the mobile device (itself) in the reflected media session. Call handover is requested from the first media session to a second media session over the second transport when the call metric indicates that the quality of the reflected media session meets a threshold.
Public/Granted literature
- US20120269171A1 METHOD, SYSTEM AND APPARATUS FOR MANAGING CALL HANDOFF Public/Granted day:2012-10-25
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