Patent ID: 11940540
Assignee: NEC CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G

Claim 0:
1. A position correction information delivery system comprising:
a receiver obtaining a position thereof using a positioning scheme in which the receiver and a reference station whose position is known measure a phase of a carrier wave from a satellite and the receiver obtains position information thereof in real time based on position correction information transmitted from the reference station; and
a first base station that manages a cell that the receiver camps on,
wherein the receiver transmits a request for position correction information to the first base station, and
wherein the first base station:
on reception of the request from the receiver, selects a second base station having a reference station located nearby to the first base station or a reference station located nearby to the first base station, from one or more second base stations and/or one or more reference stations, registered in a database, each of the one or more second base stations having the reference stations and providing position correction information from the reference station, each of the one or more reference stations providing position correction information,
receives the position correction information from the selected second base station or reference station, and
broadcasts the position correction information to the cell.