Patent ID: 11921220
Assignee: nan
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 6:
7. The positioning system according to claim 5 further comprising
second to N-th macro cell base stations that each have a macro cell, which is an area larger than the small cell, as a communicable area and that each have a GNSS reception function of receiving radio waves transmitted from GNSS satellites and obtains GNSS data from the radio waves,
when (A) the mobile station moves from a first macro cell that is a macro cell of the first macro cell base station to a second macro cell that is a macro cell of the second macro cell base station, (B) handover processing in which a source of control plane data for performing control using the macro cell is handed over from the first macro cell base station to the second macro cell base station is performed, and (C) the number of the GNSS satellites whose radio waves can be received in common by the mobile station and the second macro cell base station is less than a predetermined number,
a process of changing a transmission source of the positioning data transmitted from the macro cell base station for positioning the mobile station to the mobile station from the first macro cell base station to a macro cell base station that is different from the second macro cell base station and in which the number of GNSS satellites that can be received in common with the mobile station is larger than a predetermined number is performed.