Title:
COMMUNICATION TERMINAL, CORE NETWORK DEVICE, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/090861
Kind Code:
A1
Abstract:
The purpose of the present disclosure is to provide a communication terminal with which it is possible for a user device (UE) to start data transmission/reception normally, even when there is a difference between the minimum information required by an access management function (AMF) and the minimum information recognized by the UE. A communication terminal (10) according to the present disclosure comprises: a transmission unit (11) that, when the communication terminal (10) transitions from an idle state to a connected state, transmits, to a core network device (20), a notification message including information necessary for continuing with a registration process of the communication terminal (10) in the core network device (20); and a reception unit (12) for receiving, from the core network device (20), a response message indicating that the registration process cannot be continued due to a shortage of minimum information. When the reception unit (12) receives the response message, the transmission unit (11) re-transmits, to the core network device (20), a notification message including additional information not transmitted to the core network device (20).
Inventors:
SUZUKI NAOAKI (JP)
Application Number:
PCT/JP2019/042500
Publication Date:
May 07, 2020
Filing Date:
October 30, 2019
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04W8/06; H04W12/06; H04W60/04; H04W76/18
Other References:
QUALCOMM INCORPORATED: "Moving the HASHAMF behaviour from subclause 6.7.2 to subclause 6.4.6", 3GPP TSG SA WG3 #92 S3-182477, 24 August 2018 (2018-08-24), XP051541555
HUAWEI ET AL.: "Discussion on Protection of initial NAS message", 3GPP TSG-SA WG3 (SECURITY) MEETING #92 AD-HOC S3-183046, 28 September 2018 (2018-09-28), XP051541096
INTEL: "Initial NAS-Discussion on Initial NAS protection", 3GPP TSG SA WG3 (SECURITY) MEETING #92 AD-HOC S3-183041, 28 September 2018 (2018-09-28), XP051541091
HUAWEI ET AL.: "Discussion on Protection of initial NAS message", 3GPP TSG-SA WG3 (SECURITY) MEETING #92 AD-HOC S3-183046, 28 September 2018 (2018-09-28), XP051541096
INTEL: "Initial NAS-Discussion on Initial NAS protection", 3GPP TSG SA WG3 (SECURITY) MEETING #92 AD-HOC S3-183041, 28 September 2018 (2018-09-28), XP051541091
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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