| CPC G01S 13/56 (2013.01) [G01S 7/412 (2013.01); G01S 13/04 (2013.01)] | 10 Claims |
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1. A context-sensing control device comprising:
a pair-assignment device comprising:
a sensing-node position ascertainment unit configured to ascertain position information pertaining to respective positions of external RF-sensing nodes with respect to a predefined sensing volume of a RF context-sensing arrangement; and
a pair-assigning unit connected to the sensing-node position ascertainment-unit and configured:
to assign, using the ascertained position information, at least one transmitter-receiver pair among the individual RF-sensing nodes of the RF context-sensing arrangement to perform a RF context-sensing function;
to assign to the RF sensing nodes of the given transmitter-receiver pair a transmitter role and a receiver role, respectively; and
to provide pair information indicative of the at least one assigned transmitter-receiver pair and the assigned transmitter and receiver roles; and
wherein the pair-assignment device further comprising:
an environment-information ascertainment unit configured to ascertain environment information pertaining to one or more objects present in the sensing volume; and
wherein the pair-assigning unit is further connected to the environment-information ascertainment unit and configured to assign the at least one transmitter-receiver pair and the transmitter and receiver role also using the ascertained environment information;
wherein the environment information is indicative of a material of which the one or more objects are made and confidence level of a possibility of the one or more objects being moved or static; and
wherein context-sensing control device further comprises:
a baseline storage unit configured to store, for the at least one transmitter-receiver pair, a baseline associated thereto;
a context-determination unit connected to the baseline storage unit and to the pair-assignment device and configured to ascertain a signal quality value indicative of a predetermined RF-signal metric of an RF-signal received by that RF-sensing node having the receiver role and sent by that RF-sensing node having the transmitter role, the RF-signal metric being influenceable by a presence of a living being in the sensing volume and further configured to determine, using the ascertained signal quality value, and the corresponding baseline, whether a predetermined context-situation has occurred in the sensing volume.
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