| 摘要 |
The described method relates to indoor positioning, and tracking the locations of people or assets within an indoor space such as a hospital, comprising: determining that an absence of communication between a first radio communication apparatus (such as locator devices 10-1 to 10-6) and a second radio communication apparatus (such as an asset 11 comprising a tag 11A) for longer than a pre-determined duration has occurred (such as when asset 11 moves to corridor 109, out of communications range of any locator device 10, reference C, figure 1); and responding to the determination by causing transmission to at least one recipient radio communication apparatus 13 of a search instruction for causing the recipient radio communication apparatus 13 which receives the search instruction to be set into a search mode (reference E). The recipient radio communication apparatus is responsive to detection of an occurrence of communication between the recipient radio communication apparatus and the second radio communication apparatus 11 (reference G) to perform at least one operation. The communication may use a short-range communication protocol such as Bluetooth Low Energy, BLE. Server 12 is configured to determine when asset 11 becomes lost, missing, misplaced, absent. |
