Terminal for synchronization with candidate cell
A terminal ( 200 ) includes: a receiving unit ( 220 ) that receives, from a source gNB ( 100 A), configuration information of a candidate target cell subordinate to a target gNB ( 100 B); and a control unit ( 240 ) that performs a procedure for transition to the target gNB ( 100 B) based on the configuration information of the candidate target cell without performing a reestablishment procedure when a radio link failure occurs. The control unit ( 240 ) resumes a radio bearer suspended between the terminal ( 200 ) and the target gNB ( 100 B) in a case of performing the procedure for transition to the target gNB ( 100 B) based on the configuration information of the candidate target cell.
1. A terminal comprising:
a receiver that receives, from a source radio base station, information on a candidate cell and a transition condition to the candidate cell; and
a processor that performs a synchronization with the candidate cell based on the transition condition and performs a transition to a target radio base station which configures the information on the candidate cell, when a radio link failure is detected,
wherein the processor resumes a radio bearer suspended between the terminal and the target radio base station due to the radio link failure in a case of performing the transition to the target radio base station.
2. A terminal comprising:
a receiver that receives, from a source radio base station, information on a candidate cell and a transition condition to the candidate cell; and
a processor that performs a synchronization with the candidate cell based on the transition condition and performs a transition to a target radio base station which configures the information on the candidate cell, without transmitting a re-establishment request message, when a radio link failure is detected,
wherein the processor resumes a radio bearer suspended between the terminal and the target radio base station due to the radio link failure in a case of performing the synchronization with the candidate cell.
3. A radio communication system comprising:
a source radio base station and a terminal,
wherein the source radio base station includes a transmitter that transmits, to the terminal, information on a candidate cell and a transition condition to the candidate cell, and
the terminal includes:
a receiver that receives the information on the candidate cell and the transition condition to the candidate cell; and
a processor that performs a synchronization with the candidate cell based on the transition condition and performs a transition to a target radio base station which configures the information on the candidate cell, without transmitting a re-establishment request message, when a radio link failure is detected,
wherein the processor resumes a radio bearer suspended between the terminal and the target radio base station due to the radio link failure in a case of performing the synchronization with the candidate cell.
4. A radio communication method comprising:
transmitting to a terminal, by a source radio base station, information on a candidate cell and a transition condition to the candidate cell;
receiving, by the terminal, the information on the candidate cell and the transition condition to the candidate cell;
performing, by the terminal, a synchronization with the candidate cell based on the transition condition and performing, by the terminal, a transition to a target radio base station which configures the information on the candidate cell, without transmitting a re-establishment request message, when a radio link failure is detected; and
resuming, by the terminal, a radio bearer suspended between the terminal and the target radio base station due to the radio link failure in a case of performing the synchronization with the candidate cell.