US 12,177,699 B2
Terminal and communication node
Hideaki Takahashi, Tokyo (JP); Tianyang Min, Tokyo (JP); and Kenji Kai, Tokyo (JP)
Assigned to NTT DOCOMO, INC., Tokyo (JP)
Appl. No. 17/630,439
Filed by NTT DOCOMO, INC., Tokyo (JP)
PCT Filed Jul. 31, 2019, PCT No. PCT/JP2019/030039
§ 371(c)(1), (2) Date Jan. 26, 2022,
PCT Pub. No. WO2021/019735, PCT Pub. Date Feb. 4, 2021.
Prior Publication US 2022/0286879 A1, Sep. 8, 2022
Int. Cl. H04W 64/00 (2009.01); H04W 24/08 (2009.01); H04W 24/10 (2009.01); H04W 76/15 (2018.01)
CPC H04W 24/08 (2013.01) [H04W 24/10 (2013.01); H04W 64/003 (2013.01); H04W 76/15 (2018.02)] 10 Claims
OG exemplary drawing
 
1. A terminal comprising:
a communication unit that communicates with a first communication node and a second communication node by using dual connectivity;
a detection unit that detects a failure in communication with the second communication node; and
a transmitting unit that transmits failure information including positional information to the first communication node via a bearer for control messages between the first communication node and the terminal, the failure information concerning a failure in communication with the second communication node and the positional information being obtained at the time when the failure was detected and including a failure type,
wherein the positional information indicates a position of the terminal at a time when the terminal detects the failure, and
wherein when a timer T310 expires, the detection unit detects the failure and sets the failure type to t310-Expiry.