US 11,889,365 B2
Base station device, program, flying body, and control method
Akihiro Baba, Tokyo (JP); Mizuki Funakoshi, Tokyo (JP); and Yonghong Tan, Tokyo (JP)
Assigned to SoftBank Corp., Tokyo (JP)
Filed by HAPSMobile Inc., Tokyo (JP)
Filed on Jun. 22, 2023, as Appl. No. 18/339,246.
Application 18/339,246 is a continuation of application No. PCT/JP2021/046357, filed on Dec. 15, 2021.
Claims priority of application No. 2020-215885 (JP), filed on Dec. 24, 2020.
Prior Publication US 2023/0337078 A1, Oct. 19, 2023
Int. Cl. H04W 36/00 (2009.01)
CPC H04W 36/008355 (2023.05) [H04W 36/0085 (2018.08)] 20 Claims
OG exemplary drawing
 
1. A base station device comprising:
a storage unit that stores a neighbor relation table;
a scheme selection unit that selects a scheme of HO from a first scheme not using the neighbor relation table and a second scheme using the neighbor relation table when receiving a measurement report for HO from a user terminal; and
an HO control unit that, when the first scheme is selected, causes the user terminal to measure system information of an HO candidate cell, receives, from the user terminal, a cell global identifier included in the system information, and controls HO of the user terminal by using cell information of the HO candidate cell received from a core network by using the cell global identifier, and
when the second scheme is selected, determines whether a physical cell identifier of the HO candidate cell is included in the neighbor relation table, when the physical cell identifier is included, controls the HO of the user terminal by using cell information corresponding to the physical cell identifier, and when the physical cell identifier is not included, causes the user terminal to measure the system information of the HO candidate cell, receives, from the user terminal, the cell global identifier included in the system information, controls the HO of the user terminal by using the cell information of the HO candidate cell received from the core network by using the cell global identifier, and registers the cell information in the neighbor relation table.