The present disclosure relates to an information processing system, an information processing terminal, and an information processing method that enable payment processing to be performed more reliably.

An information processing system includes: a payment processing unit that performs data communication for executing payment processing with an information processing terminal; and a positioning processing unit that performs positioning by switching a positioning method for measuring a position of the information processing terminal for each of a plurality of ranging zones from a wide area to a narrow area set according to a distance from the payment processing unit. The present technology can be applied to, for example, a payment processing system capable of performing payment in a touchless manner.

A positioning method relating to the field of communications technologies includes: a positioning device obtains a positioning parameter set and sends the positioning parameter set to a positioning center, where the positioning parameter set includes multipath information of a to-be-positioned terminal, and the multipath information is used to position the to-be-positioned terminal. The positioning center may position the to-be-positioned terminal by using the multipath information of the to-be-positioned terminal.

A Bluetooth-enabled device is provided, the Bluetooth-enabled device being configured to control a radio frequency (RF) chain during a first period to receive at a single antenna selected from a plurality of antennas, a constant tone extension (CTE) signal of multiple frames transmitted by the Bluetooth-enabled transmitter over multiple frequencies. Further the RF chain is controlled during a second period to switch among the plurality of antennas to receive the CTE signal at each of the plurality of antennas. An initial time-of-flight (ToF) data of the CTE signal is determined from first samples of the CTE signal received during the first period. Further, the Bluetooth-enabled transmitter is localized with respect to a location of the Bluetooth-enabled device using a signal model connecting samples of the CTE signal with an unknown angle-of-arrival of the CTE signal received at specific times, an unknown ToF conditioned on the initial ToF data.

Methods for locating electromagnetic pulse emission sources in an environment including reflectors is disclosed. In one aspect, the method includes receiving, by a detector, for each source to be located, at least one same emitted pulse, received directly from said source and received by reflection on one of the reflectors. The method also includes identifying direct subsets and reflected subsets, regrouping by pairs of direct subsets with reflected subsets, calculating, for each pair, differences in dates of arrival between the pulses of the reflected subset and the pulses of the direct subset of the pair, and determining the distance of each source from the detector from calculated differences in dates of arrival of the pulses of each pair.

Methods for locating electromagnetic pulse emission sources in an environment including reflectors is disclosed. In one aspect, the method includes receiving, by a detector, for each source to be located, at least one same emitted pulse, received directly from said source and received by reflection on one of the reflectors. The method also includes identifying direct subsets and reflected subsets, regrouping by pairs of direct subsets with reflected subsets, calculating, for each pair, differences in dates of arrival between the pulses of the reflected subset and the pulses of the direct subset of the pair, and determining the distance of each source from the detector from calculated differences in dates of arrival of the pulses of each pair.

A first communication i) selects one or more respective preliminary identifiers (IDs) for one or more second communication devices, or ii) receives one or more respective preliminary IDs from one or more second communication devices, the one or more respective preliminary IDs having been respectively selected by the one or more second communication devices. The first communication device generates a trigger frame, the trigger frame indicating one or more first frequency resource and/or spatial stream allocations to one or more second communication devices using the one or more respective preliminary IDs. The first communication device transmits the trigger frame to initiate at least an uplink (UL) MU transmission by multiple second communication devices for a ranging procedure.

A target device positioning method and a mobile terminal are provided. The mobile terminal determines, according to obtained measurement signals sent by a target device from a trigger moment to a current measurement moment, azimuths of the target device relative to the mobile terminal at the moments, obtains an original motion trail of the target device from the trigger moment to the current measurement moment, determines an effective motion trail of the target device according to the original motion trail and change rates of the azimuths of the target device relative to the mobile terminal at the moments, performs matching with a map according to an azimuth of the target device relative to the mobile terminal at the current measurement moment and the effective motion trail of the target device, to determine location information of the target device, and displays the location information of the target device.

A navigation system featuring audio prompts including: a database including a plurality of beacon identifiers corresponding to physical beacons that are members of quadrants including one or more beacons, the database including navigation instructions between beacons in a quadrant and between beacons and adjacent quadrants; a controller adapted to: provide a first beacon and a destination beacon, determine a route from the first beacon to the destination beacon in a destination quadrant, provide, via the user interface, navigation instructions from the first beacon to a first quadrant of the route, for each quadrant along the route: receive, a newly encountered beacon identifier; and provide navigation instructions for the user to navigate from the newly encountered beacon to the next quadrant in the ordered list, and upon receiving a beacon identifier of a detected beacon in the destination quadrant, provide navigation instructions to navigate from the detected beacon to the destination beacon.

A navigation system featuring audio prompts including: a database including a plurality of beacon identifiers corresponding to physical beacons that are members of quadrants including one or more beacons, the database including navigation instructions between beacons in a quadrant and between beacons and adjacent quadrants; a controller adapted to: provide a first beacon and a destination beacon, determine a route from the first beacon to the destination beacon in a destination quadrant, provide, via the user interface, navigation instructions from the first beacon to a first quadrant of the route, for each quadrant along the route: receive, a newly encountered beacon identifier; and provide navigation instructions for the user to navigate from the newly encountered beacon to the next quadrant in the ordered list, and upon receiving a beacon identifier of a detected beacon in the destination quadrant, provide navigation instructions to navigate from the detected beacon to the destination beacon.

Apparatuses and methods are disclosed for performing ranging operations between an initiator device and a responder device. The initiator device may transmit, to the responder device, a fine timing measurement (FTM) request frame including a request to estimate angle information for a number of frames exchanged between the initiator device and the responder device and indicating a level of accuracy for the estimated angle information. The initiator device may receive a first FTM frame from the responder device, and may transmit an acknowledgement (ACK) frame to the responder device. The initiator device may receive, from the responder device, a second FTM frame including angle information of the first FTM frame and timing information of one or more of the exchanged frames.