Method for tracking moving entities
First Claim
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1. A method for tracking moving entities in a monitored space subdivided into a plurality of cells having a first predetermined granularity, said method including repetition of the following operations:
- transmitting information from said moving entities to a server;
determining at said server at least in part from said transmitted information a current spatial and/or temporal state of the moving entities within said monitored space;
checking said transmitted information for occurrence of a triggering event in connection with said state;
upon occurrence of said triggering event, changing granularity of at least one of the plurality of cells of the monitored space to a second predetermined granularity while maintaining the first granularity for at least one other of the plurality of cells of the monitored space; and
tracking said moving entities in the monitored space in accordance with said changed granularity.
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Abstract
Method for tracking entities (2) evolving in a monitored space having a metrics with at least one predetermined granularity, said method including repetition of the following operations:
- determining a current spatial and/or temporal state of the entities (2) within said space, according to said metrics,
- checking occurrence of a triggering event in connection with said state,
- upon occurrence of said triggering event, changing granularity of the monitored space for at least one entity (2).
18 Citations
17 Claims
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1. A method for tracking moving entities in a monitored space subdivided into a plurality of cells having a first predetermined granularity, said method including repetition of the following operations:
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transmitting information from said moving entities to a server; determining at said server at least in part from said transmitted information a current spatial and/or temporal state of the moving entities within said monitored space; checking said transmitted information for occurrence of a triggering event in connection with said state; upon occurrence of said triggering event, changing granularity of at least one of the plurality of cells of the monitored space to a second predetermined granularity while maintaining the first granularity for at least one other of the plurality of cells of the monitored space; and tracking said moving entities in the monitored space in accordance with said changed granularity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 10, 14, 15, 16, 17)
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8. A system for tracking moving entities in a monitored space subdivided into a plurality of cells having a first predetermined granularity, said system including:
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an application server configured to perform the following functions; determining a current spatial and/or temporal state of the moving entities within said monitored space; checking occurrence of a triggering event in connection with said state; and upon occurrence of said triggering event, changing granularity of at least one of the plurality of cells of the monitored space to a second predetermined granularity while maintaining the first granularity for at least one other of the plurality of cells of the monitored space; and a communication server connected to the application server and configured to manage communications with the moving entities, said communications including; contextual information sent by the moving entities in connection with their current spatial and/or temporal state within the monitored space; and granularity parameters of the plurality of cells of the monitored space sent by the communication server.
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9. A computer program product comprising a non-transitory computer readable medium carrying program code which when executed on a processing unit of a computer will cause the following steps to be performed:
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determining a current spatial and/or temporal state of moving entities within a monitored space subdivided into a plurality of cells having a first predetermined granularity; checking occurrence of a triggering event in connection with said state; upon occurrence of said triggering event, changing granularity of at least one of the plurality of cells of the monitored space to a second predetermined granularity while maintaining the first granularity for at least one other of the plurality of cells of the monitored space; and forming a message including new granularity parameters to be sent to at least one moving entity. - View Dependent Claims (11)
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12. A method for tracking entities moving in a monitored space subdivided into a plurality of cells having a first predetermined granularity, said method including repetition of the following operations:
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transmitting information from each of said entities to a server; determining at said server at least in part from said transmitted information at least one of a current location within said monitored space and a current velocity of movement within the plurality of cells of said monitored space of each of the entities; checking said transmitted information for occurrence of a triggering event in connection with said location and/or velocity of at least one of said entities, upon occurrence of said triggering event, changing granularity of at least one of the plurality of cells of the monitored space to a second predetermined granularity while maintaining the first granularity for at least one other of the plurality of cells of the monitored space; and tracking said entities in the monitored space in accordance with said changed granularity. - View Dependent Claims (13)
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Specification