Invention Grant
- Patent Title: Communication system, mobile station and communication method
- Patent Title (中): 通讯系统，移动台及通讯方式
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Application No.: US14379073Application Date: 2013-04-05
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Publication No.: US09554364B2Publication Date: 2017-01-24
- Inventor: Shinya Takeda , Itsuma Tanaka
- Applicant: NTT DOCOMO, INC.
- Applicant Address: JP Tokyo
- Assignee: NTT DOCOMO, INC.
- Current Assignee: NTT DOCOMO, INC.
- Current Assignee Address: JP Tokyo
- Agency: Osha Liang LLP
- Priority: JP2012-087943 20120406
- International Application: PCT/JP2013/060476 WO 20130405
- International Announcement: WO2013/151156 WO 20131010
- Main IPC: H04W72/04
- IPC: H04W72/04 ; H04W76/02 ; H04L29/06 ; H04W80/04 ; H04W48/18 ; H04W88/16
Abstract:
Provided are a communication system, a mobile station and a communication method that can suppress the increase of processing loads of an IP-CAN accompanying trials made by mobile stations to connect to the IP-CAN via a wireless access network that does not support any services on the IP multimedia core network subsystem (IMS). For example, a UE (100) receives, from an SGSN via the 3G, service non-supporting information indicating that the 3G does not support any services on the IP multimedia subsystem, and, when having received the service non-supporting information, stops the transmission of an Activate PDP Context Request via the 3G.
Public/Granted literature
- US20150023276A1 COMMUNICATION SYSTEM, MOBILE STATION AND COMMUNICATION METHOD Public/Granted day:2015-01-22
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