APPARATUS AND METHOD FOR ESTIMATING TAG LOCATION
First Claim
1. A method for estimating tag location in an apparatus for estimating tag location that communicates with a plurality of tags, comprising:
- selecting as a base tag a first tag that is located in a communication coverage area among the plurality of tags;
searching a second tag whose location is estimated among the plurality of tags;
estimating first distance information of the second tag by performing a ranging procedure with the second tag;
receiving second distance information that is estimated between the first tag and the second tag from the first tag; and
estimating location information of the second tag by using the first distance information and the second distance information.
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Accused Products
Abstract
A first tag that is located in a communication coverage area among a plurality of tags is selected as a base tag in order to estimate tag location in an apparatus for estimating tag location that communicates with a plurality of tags. A second tag whose location is estimated among the plurality of tags is searched. First distance information of the second tag is estimated by performing a ranging procedure of the second tag. The second distance information estimated between the first tag and the second tag is received from the first tag, and the location information of the second tag is estimated by using the first distance information and the second distance information.
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Citations
10 Claims
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1. A method for estimating tag location in an apparatus for estimating tag location that communicates with a plurality of tags, comprising:
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selecting as a base tag a first tag that is located in a communication coverage area among the plurality of tags; searching a second tag whose location is estimated among the plurality of tags; estimating first distance information of the second tag by performing a ranging procedure with the second tag; receiving second distance information that is estimated between the first tag and the second tag from the first tag; and estimating location information of the second tag by using the first distance information and the second distance information. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for estimating location of a tag adjacent to a first tag whose location is estimated in an apparatus for estimating tag location among a plurality of tags, comprising:
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searching at least one adjacent tag that is located in a communication coverage area of the first tag; updating a first location information table by estimating distance information of at least one adjacent tag; updating the first location information table by estimating distance information of the apparatus for estimating tag location; receiving an updating time of a second location information table stored in the apparatus for estimating tag location from the apparatus for estimating tag location; comparing updating time of the first location information table with the updating time of the second location information table; and transmitting the first location information table to the apparatus for estimating tag location or receiving the second location information table from the apparatus for estimating tag location. - View Dependent Claims (8, 9, 10)
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Specification