| 摘要 |
<p>A location determination method uses location data items (40) that originate at known locations and are passed to, and diffused between, entities (20) by short-range communication. Each location data item (40) received by an entity (20) specifies its originating location (41) and a time value (42) dependent on when it originated from that location. An entity (20) derives its location from received location data items (40) by effecting (29) a weighted combination of the known locations specified in the received location data items (40), the weighting of the known location (41) specified in each received location data item being dependent on the associated time value (42). <IMAGE></p> |
