System and method for communication with a mobile device via a positioning system including RF communication devices and modulated beacon light sources
First Claim
Patent Images
1. A lighting device, comprising:
- a radio frequency transceiver configured to transmit signals to and receive signals from other lighting devices in a network;
a light source for providing illumination;
a memory device storing data and programming instructions; and
a processor coupled to the transceiver, the light source and the memory device, wherein the processor, when executing the programming instructions, is configured to perform functions, including functions to;
output a request message to the other lighting devices in the network, the request message requesting a reply message from each of the other lighting devices in the network;
receive a reply message from each of the other lighting devices in the network, wherein each received reply message includes a respective lighting device identifier of the respective other lighting device that transmitted the respective reply message;
retrieve a respective lighting device identifier from each of the received reply messages, generate a list of lighting device identifiers in use in the network; and
in response to the generated list of lighting device identifiers used in the network, adopt an unused lighting device identifier as the lighting device identifier of the lighting device for use in the network.
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Abstract
A light source emits a modulated light, and a radio-frequency transceiver disposed therewith emits a radio-frequency signal. A mobile device may receive either or both signals and determine its position based thereon. The light and radio-frequency sources may be disposed in node in a network of said sources, and the nodes may communicate via the radio-frequency transceivers.
199 Citations
20 Claims
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1. A lighting device, comprising:
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a radio frequency transceiver configured to transmit signals to and receive signals from other lighting devices in a network; a light source for providing illumination; a memory device storing data and programming instructions; and a processor coupled to the transceiver, the light source and the memory device, wherein the processor, when executing the programming instructions, is configured to perform functions, including functions to; output a request message to the other lighting devices in the network, the request message requesting a reply message from each of the other lighting devices in the network; receive a reply message from each of the other lighting devices in the network, wherein each received reply message includes a respective lighting device identifier of the respective other lighting device that transmitted the respective reply message; retrieve a respective lighting device identifier from each of the received reply messages, generate a list of lighting device identifiers in use in the network; and in response to the generated list of lighting device identifiers used in the network, adopt an unused lighting device identifier as the lighting device identifier of the lighting device for use in the network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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outputting, by a processor of a lighting device, a request message via a radio frequency transceiver to other lighting devices in a network, the request message requesting a reply message from each of the other lighting devices in the network, the reply message including a respective identifier of each of the other lighting devices; receiving a reply message from each of the other lighting devices in the network, wherein each received reply message includes a lighting device identifier of a respective lighting device of the other lighting device that transmitted the respective reply message; retrieving a respective lighting device identifier from each of the received reply messages; generating a list of device identifiers in use in the network using the retrieved respective lighting device identifiers; and in response to the generated list, adopting a device identifier that is unused in the network as a device identifier of the lighting device. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification