US 11,943,819 B2
Radio terminal, radio station, core network node, and method therein
Hisashi Futaki, Tokyo (JP); and Sadafuku Hayashi, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 15/779,208
Filed by NEC CORPORATION, Tokyo (JP)
PCT Filed Sep. 13, 2016, PCT No. PCT/JP2016/004165
§ 371(c)(1), (2) Date May 25, 2018,
PCT Pub. No. WO2017/115452, PCT Pub. Date Jul. 6, 2017.
Claims priority of application No. 2015-256034 (JP), filed on Dec. 28, 2015.
Prior Publication US 2021/0212131 A1, Jul. 8, 2021
Int. Cl. H04W 76/10 (2018.01); H04W 8/24 (2009.01); H04W 76/27 (2018.01)
CPC H04W 76/10 (2018.02) [H04W 8/24 (2013.01); H04W 76/27 (2018.02)] 17 Claims
OG exemplary drawing
 
1. A radio terminal comprising:
a memory; and
at least one processor coupled to the memory, wherein
the at least one processor is configured to:
support a first Cellular Internet of Things (CIoT) architecture which enables the radio terminal to transport user data over a control plane;
support a second CIoT architecture which enables the radio terminal to transport user data over a user plane; and
transmit to a radio station a Radio Resource Control (RRC) Connection Setup Complete message including an information element indicating to the radio station that the radio terminal supports the second CIoT architecture,
wherein the RCC Connection Setup Complete message further includes a Non-Access Stratum (NAS) message, the NAS message being different from the information element, and
wherein the information element is Access Stratum (AS) layer information and is not included in the NAS message.