Invention Grant
- Patent Title: User equipment handover from a packet switched network to a circuit switched network
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Application No.: US14839646Application Date: 2015-08-28
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Publication No.: US09642044B2Publication Date: 2017-05-02
- Inventor: Jari Mutikainen , Curt Wong
- Applicant: NOKIA TECHNOLOGIES OY
- Applicant Address: FI Espoo
- Assignee: Nokia Technologies Oy
- Current Assignee: Nokia Technologies Oy
- Current Assignee Address: FI Espoo
- Agency: Mintz Levin Cohn Ferris Glovsky and Popeo, P.C.
- Main IPC: H04W36/14
- IPC: H04W36/14 ; H04W36/00

Abstract:
Systems, methods, apparatuses, and computer program products are provided for facilitating voice call continuity in intersystem handover. A method may include determining that a user equipment device being handed over from a packet switched network to a circuit switched network is a party to a voice call in an alerting state. The method may further include providing session state information indicating that the user equipment device is a party to a voice call in an alerting state to a network entity on the circuit switched network in response to the determination. Corresponding systems, computer program products and apparatuses are also provided.
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