09509402 is referenced by 16 patents and cites 184 patents.

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.

Title
System and method for communication with a mobile device via a positioning system including RF communication devices and modulated beacon light sources
Application Number
14/553424
Publication Number
9509402 (B2)
Application Date
November 25, 2014
Publication Date
November 29, 2016
Inventor
Konstantin Klitenik
Cambridge
MA, US
Emanuel Paul Malandrakis
Boston
MA, US
Kelby Edward Green
Cambridge
MA, US
Daniel Ryan
North Andover
MA, US
Agent
RatnerPrestia
Assignee
ABL IP HOLDING
GA, US
IPC
H04B 10/116
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