Provided is a method and system that includes a lighting fixture having a sensor unit and a processor and that includes an audio detection device which includes a microphone connected with the processor to detect audio signal adjacent to the lighting fixture, a time measuring device for recording a time measurement associated with the audio signal, a pair of mobile devices that each include a sonic wave generator for generating sonic wave signal in a direction of the microphone, and a distance calculation unit to calculate a distance between the sonic wave signal and the audio signal based on a time-stamp of the sonic wave signal and the audio signal, to determine a sonic pole position triangulation indicative of a location of the lighting fixture.

Provided is a method and system that includes a lighting fixture having a sensor unit and a processor and that includes an audio detection device which includes a microphone connected with the processor to detect audio signal adjacent to the lighting fixture, a time measuring device for recording a time measurement associated with the audio signal, a pair of mobile devices that each include a sonic wave generator for generating sonic wave signal in a direction of the microphone, and a distance calculation unit to calculate a distance between the sonic wave signal and the audio signal based on a time-stamp of the sonic wave signal and the audio signal, to determine a sonic pole position triangulation indicative of a location of the lighting fixture.

Methods and apparatus for wireless communication area augmentation. A plurality of Nodes or Tags assist in aligning real-world with virtual-world content. Using augmented reality, an Agent may detect one or more Tags by the reflection or other reception of wireless energy in a Radio Target Area. This may be correlated with information in a database about an object proximate to the Tag. In this way, messages, history, and other information about the object may be easily conveyable to the Agent.

An electronic device including a sound receiver and a processor is provided. The sound receiver receives a sound signal provided by a sound generator. When the processor determines that an obstacle is blocked between the electronic device and the fixed device, the processor estimates a virtual position of the electronic device at a current time according to previous movement information and a previous position of the electronic device. The virtual position has a shortest path between a boundary position of the obstacle and the sound generator. The processor obtains a first relative distance between the electronic device and the boundary position according to the sound signal received by the sound receiver and the boundary position. The processor calculates a relative velocity and a relative acceleration of the electronic device relative to the fixed device at the current time according to the sound signal and the first relative distance.

An electronic device including a sound receiver and a processor is provided. The sound receiver receives a sound signal provided by a sound generator. When the processor determines that an obstacle is blocked between the electronic device and the fixed device, the processor estimates a virtual position of the electronic device at a current time according to previous movement information and a previous position of the electronic device. The virtual position has a shortest path between a boundary position of the obstacle and the sound generator. The processor obtains a first relative distance between the electronic device and the boundary position according to the sound signal received by the sound receiver and the boundary position. The processor calculates a relative velocity and a relative acceleration of the electronic device relative to the fixed device at the current time according to the sound signal and the first relative distance.

A method for radio measuring applications, wherein at least two radio nodes operate at least once in a transmit mode and in a receive mode and form a cell and at least one radio node operates as an extra radio node works exclusively in a receive or transmit mode, each radio node has a timer and a further data interface, to initiate the measurement cycle, an initial signal with a first carrier frequency is transmitted by one of the radio nodes and received by at least one radio node of the cell, during the measurement cycle at least one radio node of the cell transmits a response signal with a further carrier frequency and the response signal is received by at least one radio node.

A hybrid infrared-ultrasound real time location system includes at least one emitter having an infrared transmitter and a plurality of ultrasound transmitters and at least one tag. The tag receives an infrared signal from the infrared transmitter and ultrasound signals from the ultrasound transmitters. The time between the time-of-arrival of the IR signal and the time-of-arrival of each ultrasound signal is calculated and used to measure the respective time-of-flight of each of the US transmissions from the US transmitters to the tag and compute location.

A hybrid infrared-ultrasound real time location system includes at least one emitter having an infrared transmitter and a plurality of ultrasound transmitters and at least one tag. The tag receives an infrared signal from the infrared transmitter and ultrasound signals from the ultrasound transmitters. The time between the time-of-arrival of the IR signal and the time-of-arrival of each ultrasound signal is calculated and used to measure the respective time-of-flight of each of the US transmissions from the US transmitters to the tag and compute location.

Examples of the disclosure relate to apparatus (101) for positioning mobile devices (105). The apparatus (101) comprises means for: obtaining a time of arrival of at least one audio signal (131) at a mobile device (105), wherein the audio signal (131) is generated with a photoacoustic effect; and using the time of the arrival of the audio signal (131) to estimate a location of the mobile device (105).

Examples of the disclosure relate to apparatus (101) for positioning mobile devices (105). The apparatus (101) comprises means for: obtaining a time of arrival of at least one audio signal (131) at a mobile device (105), wherein the audio signal (131) is generated with a photoacoustic effect; and using the time of the arrival of the audio signal (131) to estimate a location of the mobile device (105).