Method for handover in non-terrestrial network, and apparatus for the same
AssigneeElectronics and Telecommunications Research Institute
InventorsMi Young Yun, Ji Hyung Kim
Life of this patent
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Abstract
A handover method performed by a terminal in a non-terrestrial network may comprise transmitting a measurement report including measurement results for neighbor cells to a serving satellite base station; receiving, from the serving satellite base station, connection configuration information for at least one target base station candidate and information on an activation time when the connection configuration information for the at least one target base station candidate is activated; and performing a handover to a first target base station candidate among the at least one target base station candidate based on information received from the at least one target base station candidate at the activation time.
Claims17
A handover method performed by a terminal in a non-terrestrial network, the handover method comprising:
- transmitting a measurement report including measurement results for neighbor cells to a serving satellite base station;
- receiving, from the serving satellite base station, connection configuration information for at least one target base station candidate and information on an activation time when the connection configuration information for the at least one target base station candidate is activated;
- performing a handover to a first target base station candidate among the at least one target base station candidate based on information received from the at least one target base station candidate at the activation time;
- and
- transmitting information on a remaining target base station or remaining target base stations except the first target base station candidate among the at least one target base station candidate to the first target base station,
- wherein the first target base station notifies the remaining target base station or remaining base stations that the terminal is not handed over to the remaining target base station or remaining base stations.
A method of supporting a handover of a terminal, performed by a serving satellite base station in a non-terrestrial network, the method comprising:
- receiving a measurement report including measurement results for neighbor cells from the terminal;
- determining at least one target base station candidate based on the measurement report, and receiving connection configuration information from the at least one target base station candidate;
- transmitting, to the terminal, connection configuration information for the at least one target base station candidate and information on an activation time when the connection configuration information for the at least one target base station candidate is activated;
- and
- when reconnection configuration for maintaining connection is requested from the terminal, receiving information on the at least one target base station candidate from the terminal and notifying the at least one target base station candidate that the terminal is not handed over to the at least one target base station candidate.
A handover method performed by a terminal in a non-terrestrial network, the handover method comprising:
- transmitting a measurement report including measurement results for neighbor cells to a serving satellite base station;
- receiving, from the serving satellite base station, connection configuration information for a first base station and information on an activation time when the connection configuration information for the first base station is activated;
- when receiving information of a second base station that is different from the first base station at the activation time, performing a handover to the second base station by proceeding with a connection configuration procedure with the second base station;
- and
- transmitting information on the first base station to the second base station, wherein the second base station notifies the first base station that the terminal is not handed over to the first base station based on the information on the first base station.
Dependencies are inferred from the claim text.