Patent · US Active

Inter-PLMN roaming

US8452278B2 · kind B2 · utility

3Cited by

4References

19Claims

0Family size

Assignee

Alcatel Lucent · FR

Inventors

Lu Tian · Plano, US
Bruce Zhao · Plano, US
Ping Sha · Shanghai, CN
Eddy Lin · Diamond Bar, US

Key dates

Filing date	Aug 21, 2007
Grant date	May 28, 2013
Priority date	—
Expiry date	Jun 6, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH04Q3/0045
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A method for facilitating inter-PLMN (Public Land Mobile Network) roaming comprises a plurality of operations. A home PLMN of a caller's wireless communication device performs an operation for determining that the caller's wireless communication device is not located in the home PLMN and, in response to determining that the caller's wireless communication device is not located in the home PLMN, an operation for facilitating a call routing service in a Service Control Point (SCP) of the home PLMN. The call routing service causes a call originated by the caller's wireless communication device while roaming in a visited PLMN to be routed back to a Gateway Mobile Switching Center (GMSC) of the home PLMN thereby allowing the home PLMN to have control over the roaming caller originated call and to have limited dependency on the visited PLMN.

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