Title:
WIRELESS COMMUNICATION SYSTEM, GATEWAY DEVICE, MOBILITY MANAGEMENT ENTITY, AND COMMUNICATION CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2017/029909
Kind Code:
A1
Abstract:
Provided are: a wireless communication system which is capable of implementing swift returns to a connected state from an idle state, even in cases when a vast number of user devices (UE) are connected to a wireless network like a cellular internet of things (CIoT), while ensuring flexibility with regard to coping with future wireless network architecture; a gateway device; a mobility management entity; and a communication control method. The communication control method includes: a step in which, when an S/PGW receives, from an MME, a session cancellation request requesting cancellation of a session for a UE, the S/PGW transmits, to the MME, a session cancellation response including the ESM context of the session; a step in which the MME transmits, to the S/PGW, in accordance with the start of processing for returning the UE to a connected state from an idle state, a session generation request including the ESM context; and a step in which the S/PGW resets the session on the basis of the ESM context included in the session generation request received from the MME.
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Inventors:
KOSHIMIZU TAKASHI (JP)
ALI IRFAN (TR)
HUSAIN SYED (US)
ALI IRFAN (TR)
HUSAIN SYED (US)
Application Number:
PCT/JP2016/070507
Publication Date:
February 23, 2017
Filing Date:
July 12, 2016
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
International Classes:
H04W76/04; H04W88/16; H04W92/24
Domestic Patent References:
| WO2011129273A1 | 2011-10-20 | |||
| WO2014183833A1 | 2014-11-20 |
Foreign References:
| JP2014510496A | 2014-04-24 |
Other References:
"3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Architecture enhancements for Cellular Internet of Things; (Release 13)", 3GPP TR 23.720 V0.1.0, July 2015 (2015-07-01), XP055365522
NTT DOCOMO: "Removing per UE GTP-C on Sll during idle-mode", 3GPP TSG-SA WG2 #110AH S2-152845, 26 August 2015 (2015-08-26), pages 2 - 152845, XP051043088
NTT DOCOMO: "Efficient Service Request even for mobile UEs", 3GPP TSG-SA WG2 #110AH S2-152843, 26 August 2015 (2015-08-26), pages 2 - 152843, XP051043087
See also references of EP 3340730A4
NTT DOCOMO: "Removing per UE GTP-C on Sll during idle-mode", 3GPP TSG-SA WG2 #110AH S2-152845, 26 August 2015 (2015-08-26), pages 2 - 152845, XP051043088
NTT DOCOMO: "Efficient Service Request even for mobile UEs", 3GPP TSG-SA WG2 #110AH S2-152843, 26 August 2015 (2015-08-26), pages 2 - 152843, XP051043087
See also references of EP 3340730A4
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (JP)
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