Location determination using location data items received by short-range communication
First Claim
1. A location determination method wherein an entity receives, by short-range communication, location data items originating at known locations and each specifying its originating location and a time value dependent on when it originated from that location;
- the entity deriving its location from location data items it has received 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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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 wherein an entity receives, by short-range communication, location data items originating at known locations and each specifying its originating location and a time value dependent on when it originated from that location;
- the entity deriving its location from location data items it has received 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.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23)
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16. An entity provided with a location discovery system 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 entity 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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24. A location determination method wherein location data items originating at known locations are passed to, and diffused 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;
- a said entity deriving its location from location data items it has received by combining the known locations specified in the location data items in dependence on the related ages of the location data items.
Specification