Communication techniques using passive beacons
Certain embodiments are directed to techniques (e.g., a device, a method, a memory or non-transitory computer readable medium storing code or instructions executable by one or more processors) for passive beacon communication techniques. Transmitting devices (e.g., beacons) can transmit advertising messages using a first wireless protocol to provide timing for ranging messages for one of more ranging messages over a second protocol (e.g., UWB). One or more receiving devices can determine using signal strength if the devices are within a threshold range to perform communication techniques. Various ranging communications techniques can be used to determine a range between the receiving device and transmitting device. Other techniques can be used to passively calculate the angle of arrival for transmitter signals. The angle of arrival information can be used for precise position locating for the receiving device or to indicate interest in information provided by the one or more transmitting devices.
1. A method of communicating with a transmitting device by a mobile device, the method comprising performing, by the mobile device:
receiving an advertising packet from the transmitting device via a first wireless protocol, wherein the advertising packet specifies a schedule for one or more ranging signals using a second wireless protocol that is different from the first wireless protocol;
determining a listening window for the one or more ranging signals based on the schedule specified by the advertising packet;
receiving, at an antenna array of the mobile device, a ranging signal via the second wireless protocol during the listening window, wherein the antenna array comprises a plurality of antennas including a first antenna and a second antenna;
comparing a first measurement of the ranging signal at the first antenna to a second measurement of the ranging signal at the second antenna; and
determining an angle of arrival of the ranging signal using the comparison and a physical configuration of the plurality of antennas.
2. The method of claim 1 , further comprising:
receiving transmitting device identification information in the advertising packet; and
based on the transmitting device identification information, determining if the transmitting device has information relevant to an application executing on the mobile device, the application including functionality that is dependent on a position of mobile device relative to the transmitting device.
3. The method of claim 2 , wherein the position of the mobile device includes an orientation of the mobile device.
4. The method of claim 2 , wherein the transmitting device identification information comprises details about an object to which the transmitting device is attached.
5. The method of claim 1 , wherein a schedule for transmitting the one or more ranging signals that comprise transmitting device identification information via the advertising packet using the first wireless protocol is hardcoded in one or more mobile devices.
6. The method of claim 1 , wherein one or more ranging packets of the ranging signal comprise a deep link, wherein the deep link is a hyperlink that links to a specific piece of web content on a website.
7. The method of claim 1 , wherein the advertising packet comprises one or more deep links.
8. The method of claim 1 , wherein the advertising packet comprises a schedule for transmitting information packets, the schedule specifies a time delay following transmission of the advertising packet to listen for the information packets.
9. The method of claim 1 , further comprising receiving transmitting device information that comprises a location of the transmitting device.
10. The method of claim 1 , further comprising receiving transmitting device information that comprises a link to a floorplan for a transmitting device location.
11. The method of claim 1 , further comprising:
determining a second angle of arrival from a second ranging signal from a second transmitting device; and
determining a location of the mobile device by triangulating the ranging signal and the second ranging signal.
12. The method of claim 1 , further comprising:
based on the angle of arrival, retrieving information specified by the transmitting device, wherein the information is specified by the advertising packet or the ranging signal.
13. A mobile device, comprising:
a processor; and
a memory coupled to the processor, the memory storing instructions, which when executed by the processor, cause the mobile device to perform operations including:
receiving an advertising packet from a transmitting device via a first wireless protocol, wherein the advertising packet specifies a schedule for one or more ranging signals using a second wireless protocol that is different from the first wireless protocol;
determining a listening window for the one or more ranging signals based on the schedule specified by the advertising packet;
receiving, at an antenna array of the mobile device during a listening window, a ranging signal via a second wireless protocol during the listening window, wherein the antenna array comprises a plurality of antennas including a first antenna and a second antenna;
comparing a first measurement of the ranging signal at the first antenna to a second measurement of the ranging signal at the second antenna; and
determining an angle of arrival of the ranging signal using the comparison and a physical configuration of the plurality of antennas.
14. The mobile device of claim 13 , wherein the operations further include:
receiving transmitting device identification information in the advertising packet; and
based on the transmitting device identification information, determining if the transmitting device has information relevant to an application executing on the mobile device, the application including functionality that is dependent on a position of mobile device relative to the transmitting device.
15. The mobile device of claim 14 , wherein the position of the mobile device includes an orientation of the mobile device.
16. The mobile device of claim 14 , wherein the transmitting device identification information comprises details about an object to which the transmitting device is attached.
17. The mobile device of claim 13 , wherein a schedule for transmitting the ranging signal that comprise transmitting device identification information via the advertising packet using the first wireless protocol is hardcoded in one or more mobile devices.
18. The mobile device of claim 13 , wherein one or more ranging packets comprise a deep link, wherein a deep link is a hyperlink that links to a specific piece of web content on a website.
19. The mobile device of claim 13 , wherein the advertising packet comprises one or more deep links.