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:
Mar. 18, 2014
Filed:
Oct. 04, 2011
Katsutoshi Nishida, Tokyo, JP;
Takashi Morita, Tokyo, JP;
Katsutoshi Nishida, Tokyo, JP;
Takashi Morita, Tokyo, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
A mobile communication system according to the present invention includes the steps of: causing an UE to switch a radio access network in a connection destination from E-UTRAN to UTRAN/GERAN; causing an MME to receive 'Delete Bearer Request' to a voice communication packet bearer from an S-GW; and causing the MME to transmit to the S-GW a 'Delete Bearer Response' to the “Delete Bearer Request”, without giving an instruction to the UE#1 or the E-UTRAN to release the voice communication packet bearer, if a core bearer disconnection flag is set in the received “Delete Bearer Request”.