RF communication for secure access
An Ultra-Wideband (UWB) wireless communication device includes a scanning circuit, an ordering circuit, and a selecting circuit. The scanning circuit is configured for scanning at least a channel supported by the communication device for detecting a plurality of patterns of a UWB frame format. The ordering circuit is configured for ordering the plurality of patterns in a patterns list according to a predefined quality parameter. The selecting circuit is configured for selecting at least one of the patterns in the list to start an Ultra Wideband (UWB) wireless communications.
1. An Ultra-Wideband (UWB) wireless communication device, the communicating device including:
a scanning circuit configured for scanning at least a channel supported by the communication device for detecting a plurality of patterns of a UWB frame format,
an ordering circuit configured for ordering the plurality of patterns in a patterns list according to a predefined quality parameter,
a selecting circuit configured for selecting at least one of the patterns in the list to start a Ultra-Wideband (UWB) wireless communication.
2. The Ultra-Wideband (UWB) wireless communication device according to claim 1 , wherein the plurality of patterns are at least one of a plurality of SYNC pattern or of a plurality of SFD patterns.
3. The Ultra-Wideband (UWB) wireless communication device according to claim 1 , wherein the ordering circuit is configured for ordering the plurality of patterns from the least susceptible to interferences to the most susceptible to interferences.
4. An Ultra-Wideband (UWB) wireless communication system including an initiator device and a responder device, wherein at least one of the initiator device and the responder device is a wireless communication device according to claim 1 .
5. The Ultra-Wideband (UWB) wireless communication system according to claim 4 , wherein one of the initiator device and the responder device is a key fob or a smartphone and the other of the initiator device and the responder device is installed on a vehicle.
6. The Ultra-Wideband (UWB) wireless communication system according to claim 4 , wherein the wireless communication includes a ranging session for calculating a distance between the initiator device and the responder device.
7. The Ultra-Wideband (UWB) wireless communication system according to claim 4 , wherein the initiator device is configured for performing a UWB wireless communication with the responder device using a pattern of the list.
8. The Ultra-Wideband (UWB) wireless communication system according to claim 7 , wherein, if after a timeout time no answer has been received from the responder device, the initiator device switches to the next pattern of the list.
9. An Ultra-Wideband (UWB) wireless communication method between an initiator device and a responder device, wherein the method includes the step of:
scanning at least a channel supported by the communication device for detecting a plurality of patterns of a UWB frame format,
ordering the plurality of patterns in a patterns list according to a predefined quality parameter,
selecting at least one of the patterns in the list to start a Ultra-Wideband (UWB) wireless communication.
10. The Ultra-Wideband (UWB) wireless communication method of claim 9 , wherein in the step of selecting, the pattern on top of the list is chosen.
11. The Ultra-Wideband (UWB) wireless communication method of claim 9 , wherein after the step of selecting one of the patterns in the list to start a Ultra-Wideband (UWB) wireless communication, if after a timeout time no answer has been received from the responder device, the selection is changed to the next pattern in the list.
12. The Ultra-Wideband (UWB) wireless communication method of claim 9 , wherein before the steps of scanning and ordering are performed by the responder, the initiator device initiates a communication session with the the responder device upon receipt of a beaconing signal.
13. The Ultra-Wideband (UWB) wireless communication method of claim 12 , wherein after receiving the beaconing signal, the steps of scanning and ordering the plurality of patterns is performed also in the initiator device to generate a second patterns list, the method comprising a further step of modifying the patterns list by removing patterns which are not included in the second patterns list.
14. The Ultra-Wideband (UWB) wireless communication method of claim 9 , wherein the steps of scanning and ordering are performed continuously by the responder.
15. The Ultra-Wideband (UWB) wireless communication method of claim 14 , wherein the patterns list is optimized after comparison with existing lists from other responders nearby.