The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 29, 2015
Filed:
Dec. 12, 2012
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
John Walter Diachina, Garner, NC (US);
Paul Schliwa-Bertling, Ljungsbro, SE;
Anders Molander, Linkoping, SE;
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL), Stockholm, SE;
Abstract
Packet Switched (PS) handover based Circuit Switched Fall Back (CSFB) of a mobile station is controlled from an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) cell to a target Universal Terrestrial Radio Access Network (UTRAN) cell or a target GSM EDGE Radio Access Network (GERAN) cell in a PS domain. A network node receives a handover request from a SGSN. A PLMN ID associated with the SGSN is identified. A set of PLMN IDs transmitted as system information by the target UTRAN cell or the target GERAN cell is identified. A PLMN ID index is generated to indicate an association between the PLMN ID associated with the SGSN and one of the PLMN IDs of the set. The PLMN ID index is communicated toward the mobile station for use during PS handover based CSFB. The mobile station embeds the PLMN ID index in a Location Area Update (LAU) message, and transmits the LAU message to a target BSS/RNS of the GERAN/UTRAN cell for use during the PS handover based CSFB.