In one embodiment, a method includes receiving a plurality of radio frequency chains at a wireless device in a block based modulation environment, recording subcarrier phases and differences between the subcarrier phases, and using the subcarrier phase differences to construct a feature vector for use in angle of arrival calculated positioning of a mobile device.

A beacon network includes a plurality of beacons arranged at predetermined positions to periodically or intermittently emit a signal wave including identification information, and a radio wave absorber to adjust an emission angle of the signal wave emitted from at least one of the plurality of beacons.

A sales rotation system is disclosed that increases walk-up sales. The sales rotation system creates an equitable and efficient management of sales personnel on the dealership floor. The sales rotation system corrects one or more business issues with handling of walk-up sales including sales personnel bickering over who is up next in the rotation, track lead collection and close ratios, creating an automated way to notify a sales person when the sales person is up, digitally fence an up area and provide a notification when sales personnel who are up wander from the showroom entry, setting up a count to be flexible based on dealership volume and size, and improving customer experience by managing the number of sales personnel on the dealership floor and equitably rotating them.

A sales rotation system is disclosed that increases walk-up sales. The sales rotation system creates an equitable and efficient management of sales personnel on the dealership floor. The sales rotation system corrects one or more business issues with handling of walk-up sales including sales personnel bickering over who is up next in the rotation, track lead collection and close ratios, creating an automated way to notify a sales person when the sales person is up, digitally fence an up area and provide a notification when sales personnel who are up wander from the showroom entry, setting up a count to be flexible based on dealership volume and size, and improving customer experience by managing the number of sales personnel on the dealership floor and equitably rotating them.

The present invention relates to a wireless power transmission method in a wireless charging system supporting electromagnetic resonance and a device therefor. According to one embodiment of the present invention, a wireless power transmission method in a wireless power transmitter wirelessly supplying power to a wireless power receiver through a resonance phenomenon can comprise the steps of: entering a configuration state according to the application of power and performing booting; generating a random first standby offset when the booting is completed; and entering a power saving state at a point in time determined on the basis of the first standby offset, so as to initiate a beacon sequence. Therefore, the present invention has an advantage of enabling power loss caused by cross connection and device damage caused by heat generation in the wireless charging system to be minimized.

The present invention relates to a wireless power transmission method in a wireless charging system supporting electromagnetic resonance and a device therefor. According to one embodiment of the present invention, a wireless power transmission method in a wireless power transmitter wirelessly supplying power to a wireless power receiver through a resonance phenomenon can comprise the steps of: entering a configuration state according to the application of power and performing booting; generating a random first standby offset when the booting is completed; and entering a power saving state at a point in time determined on the basis of the first standby offset, so as to initiate a beacon sequence. Therefore, the present invention has an advantage of enabling power loss caused by cross connection and device damage caused by heat generation in the wireless charging system to be minimized.

A tracking system determines a location of a tracking device associated with a user using one or more access points at the location. Each access point at the location is configured to detect and couple with the tracking device when the tracking device is within a communicative range of the access point. An access point provides updates on the tracking device's presence, as well as the tracking device's arrival to and departure from the communicative range of the access point, to a tracking server. The tracking server determines, from these updates, whether the tracking device is at the location. The user may be notified, via a mobile device, of the tracking device's location.

A tracking system determines a location of a tracking device associated with a user using one or more access points at the location. Each access point at the location is configured to detect and couple with the tracking device when the tracking device is within a communicative range of the access point. An access point provides updates on the tracking device's presence, as well as the tracking device's arrival to and departure from the communicative range of the access point, to a tracking server. The tracking server determines, from these updates, whether the tracking device is at the location. The user may be notified, via a mobile device, of the tracking device's location.

An information processing device includes a processor configured to: receive first positional information related to a position of a portable device from the portable device; extract transmitters located within a certain area including a first positional coordinate, which is a positional coordinate of the portable device based on the first positional information, from among registered transmitters, calculate respective distances between transmitters within the certain area and the portable device, and extract a predetermined number or less of transmitters based on the calculated distances from among the transmitters within the certain area; and transmit first identification information of the predetermined number or less of transmitters, which allows the portable device to determine whether the first identification information includes second identification information indicating a transmitter transmitted from the transmitter in and to perform a particular process when the first identification information includes the second identification information, to the portable device.

An automated method is provided for activating a NFC application in a mobile interface device. In this method, the device receives from a beacon a wireless beacon signal comprising at least one beacon identifier. The wireless beacon signal is processed by the mobile interface device to determine the at least one beacon identifier. The mobile interface device determines based on the at least one beacon identifier, whether to activate the NFC application. Responsive to a determination that the NFC application should be activated, the mobile interface device transitions the NFC application from a passive state to an active state. NFC communication is then established between the mobile interface device and at least one NFC transmitting device disposed within a beacon range volume defined by the beacon location and the beacon range.