Positioning method based on reliability and apparatus thereof
AssigneeElectronics and Telecommunications Research Institute
InventorManho PARK
Life of this patent
Estimating the term…
Abstract
According to a positioning method of estimating a position of a terminal by being connected with a plurality of positioning, in the state in which a first reference position is calculated based on absolute coordinate positional information provided from one positioning resource, when a second reference position based on new absolute coordinate positional information from the positioning resource and reliability of the second reference position are calculated, an update of an reference position for user position estimation is optionally performed depending on whether the reliability of the second reference position satisfies a preset reference position update reference.
Claims16
A positioning method of estimating a position of a terminal by being connected with a plurality of positioning resources, comprising:
- estimating, by a positioning apparatus, a position of a user and calculating reliability of the estimated position of the user for the estimated position of the user, based on a first reference position depending on a first absolute coordinate position received from a positioning resource;
- calculating, by the positioning apparatus, a second reference position and reliability of the second reference position, based on a second absolute coordinate position received from the positioning resource;
- determining, by the positioning apparatus, whether the reliability of the second reference position satisfies a preset reference position update reference;
- updating, by the positioning apparatus, an reference position for user position estimation from the first reference position to the second reference position when the reliability of the second reference position satisfies the reference position update reference;
- and
- newly estimating, by the positioning apparatus, the position of the user based on the updated second reference position and calculating reliability of the estimated position of the user for the estimated position of the user.
A positioning apparatus for estimating a position of a terminal by being connected with a plurality of positioning resources, comprising:
- a positioning resource information receiving unit configured to receive absolute coordinate positional information provided from the positioning resources;
- an reference position calculation unit configured to calculate an reference position for user position estimation and reliability of the reference position based on the absolute coordinate positional information;
- an reference position update unit configured to determine whether reliability of a second reference position satisfies a preset reference position update reference and update whether the reference position is updated, when the second reference position based on a new absolute coordinate positional information from the positioning resources and the reliability of the second reference position are calculated, in the state in which the first reference position is calculated;
- and
- a dead reckoning unit configured to estimate a position of a user based on the reference position and calculate the reliability of an estimated position of the user for the estimated position of the user,
- wherein the dead reckoning unit newly estimates the position of the user based on the second reference position and newly calculates the reliability of the corresponding estimated position of the user when the reliability of the second reference position satisfies the preset reference position update reference.
Dependencies are inferred from the claim text.