Invention Grant
- Patent Title: Telecommunications network emergency-call handover
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Application No.: US14815831Application Date: 2015-07-31
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Publication No.: US09699221B2Publication Date: 2017-07-04
- Inventor: Shujaur Mufti , Zeeshan Jahangir
- Applicant: T-Mobile USA, Inc.
- Applicant Address: US WA Bellevue
- Assignee: T-Mobile USA, Inc.
- Current Assignee: T-Mobile USA, Inc.
- Current Assignee Address: US WA Bellevue
- Agency: Lee & Hayes, PLLC
- Agent Robert C. Peck; Christopher J. White
- Main IPC: H04M11/04
- IPC: H04M11/04 ; H04L29/06 ; H04W4/22 ; H04W76/00 ; H04W60/00 ; H04W88/18 ; H04W60/06 ; H04W36/00 ; H04W76/04

Abstract:
Telecommunications network components configured to manage a handover of a communication session, e.g., an emergency communication session, of user equipment are described herein. A core network device may transmit respective handover queries to a plurality of anchoring network devices following a handover request from user equipment. Each anchoring network device can provide a respective indication of whether the emergency communication session is being proxied by that anchoring network device. The core network device may transmit an invitation message to an anchoring network device in response to a positive indication from that anchoring network device. An anchoring network device may store in a memory an address of the anchoring network device in association with an address of the user equipment. The core network device may retrieve from memory the address of the anchoring network device and transmit an invitation message to the anchoring network device using the retrieved address.
Public/Granted literature
- US20160037390A1 Telecommunications Network Emergency-Call Handover Public/Granted day:2016-02-04
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