Location determination using location data items received by short-range communication
First Claim
Patent Images
1. A location determination method comprising:
- an entity receiving by short-range communication, location data items that originate at known locations and that each specifies its originating location and a time value dependent on when it originated from that location; and
the entity deriving it'"'"'s location from location data items it has received by effecting a weighted combination of the known locations specified in a plurality of the received location data items, the weighting of the known location specified in each received location data item used in effecting the weighted combination being greater than zero and dependent on the associated time value.
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Abstract
A location determination method uses location data items that originate at known locations and are passed to, and diffused between, entities by short-range communication. Each location data item received by an entity specifies its originating location and a time value dependent on when it originated from that location. An entity derives its location from received location data items by effecting a weighted combination of the known locations specified in the received location data items, the weighting of the known location specified in each received location data item being dependent on the associated time value.
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Citations
24 Claims
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1. A location determination method comprising:
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an entity receiving by short-range communication, location data items that originate at known locations and that each specifies its originating location and a time value dependent on when it originated from that location; and the entity deriving it'"'"'s location from location data items it has received by effecting a weighted combination of the known locations specified in a plurality of the received location data items, the weighting of the known location specified in each received location data item used in effecting the weighted combination being greater than zero and dependent on the associated time value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A device, comprising:
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a short-range receiver for receiving location data items from currently nearby transmitting entities, each location data item indicating its originating location and a time value dependent on when it originated from that location; a memory for storing the received location data items; and a location derivation arrangement operative to determine the location of the device by effecting a weighted combination of the known locations specified in a plurality of the received location data items, the weighting of the known location specified in each received location data item used in effecting the weighted combination being greater than zero and dependent on the associated time value. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A location determination method comprising:
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passing location data items that originate at known locations to, and diffusing between, entities by short-range communication, each location data item received by an entity including an age value dependent on when the item originated from a specified said known location; and a said entity deriving its location from a plurality of location data items it has received by assigning a weight greater than zero to the known locations specified in each of the plurality of received location data items in dependence on the related ages of the respective location data items and combining the weighted known locations.
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Specification