Patent · US Active

Seamless handoff across heterogeneous access networks using a handoff controller in a service control point

US7664501B2 · kind B2 · utility

20Cited by

4References

28Claims

0Family size

Inventors

Ashutosh Dutta · Bound Brook, US
Subir Das · Kendall Park, US
Donald Lukacs · Red Bank, US
Tao Zhang · Beijing, CN
David Shrader · Jacksonville, US
Raquel Morera Sempere · Morristown, US
Stephanie Demers · Westfield, US
Bryan J. Lyles · Bedminster, US
James Alfieri · Easton, US

Key dates

Filing date	May 18, 2006
Grant date	Feb 16, 2010
Priority date	—
Expiry date	Jan 1, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH04W80/00
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

In a telecommunications network in which a mobile handset is capable of communicating in both an IP domain and a non-IP domain, the handoff of an existing communications session between the mobile handset and a fixed user is facilitated by a handoff controller implemented in a service control point. The handoff controller implements different handoff methods depending on the status of the fixed user and the transition of the mobile user. Additionally 802.21 Media Independent Handover Function in conjunction with SIP is used to facilitate handover between IP and Non-IP points in the system.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.