Title:
MOBILE COMMUNICATION METHOD AND CALL SESSION CONTROL SERVER DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/158772
Kind Code:
A1
Abstract:
A mobile communication method has: a step in which an MME restarts in a state with a bearer for UE set up between an S-GW and a P-GW; a step in which a P/S-CSCF transmits an incoming signal addressed to the UE to the S-GW via the P-GW; a step in which the S-GW notifies the P/S-CSCF of the MME restart via the P-GW; a step in which the P/S-CSCF holds the incoming signal addressed to the UE; and a step in which after the UE is re-registered in an IMS, the P/S-CSCF transmits the held incoming signal addressed to the UE to the S-GW via the P-GW.
Inventors:
NISHIDA KATSUTOSHI (JP)
SUZUKI KEISUKE (JP)
SUZUKI KEISUKE (JP)
Application Number:
PCT/JP2011/063450
Publication Date:
December 22, 2011
Filing Date:
June 13, 2011
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
NISHIDA KATSUTOSHI (JP)
SUZUKI KEISUKE (JP)
NISHIDA KATSUTOSHI (JP)
SUZUKI KEISUKE (JP)
International Classes:
H04W76/02; H04W24/04
Foreign References:
| JP2009267706A | 2009-11-12 | |||
| JP2008270926A | 2008-11-06 |
Other References:
NEC: "EPC node failure", 3GPP TSG CT4 MEETING #49 C4-101116, 10 May 2010 (2010-05-10)
"Restoration procedures", 3GPP TS 23.007 V9.3.0, 6 April 2010 (2010-04-06), pages 23 - 25
"Restoration procedures", 3GPP TS 23.007 V9.3.0, 6 April 2010 (2010-04-06), pages 23 - 25
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (JP)
Hidekazu Miyoshi (JP)
Hidekazu Miyoshi (JP)
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Claims:
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