Abstract: Methods of deploying shovels and haul trucks to meet a defined production target may include: Determining at least one production constraint for a shovel and a material processing system; estimating an effect of entropy on a cycle time of the haul trucks to produce a future cycle time estimate; estimating an effect of entropy on a material processing time of the material processing system to produce a future material processing time estimate; predicting whether a delay will occur during the operation of the shovel, the haul trucks, and the material processing system; estimating a duration of the predicted delay; determining a number of shovels and a number of haul trucks required to meet the defined production target based on the determined production constraint, the future cycle time estimate, the future material processing time estimate, and the duration of the predicted delay; and deploying the determined number of shovels and the determined number of haul trucks.

Abstract: Presented herein are techniques for assigning Ultra-Wideband (UWB) anchors for client ranging. A location server can estimate a coarse location of a mobile device using a localization technique other than a UWB localization technique. The localization technique can involve multiple wireless access points or other radio devices. The location server can define an area around the coarse location to identify a set of candidate anchors for UWB ranging. The set of candidate anchors can be disposed within the area and include at least a subset of the radio devices. The location server can modify the set of candidate anchors to create a modified set of candidate anchors that includes only UWB-enabled devices. The location server can select a primary anchor from the modified set of candidate anchors and send a command to cause a UWB ranging procedure to be initiated between the primary anchor and the mobile device.

Abstract: A method, particularly a computer-implemented method, for determining information of a bus system that has a transmission medium via which signals are transmittable. The method includes: determining a first variable which characterizes a time difference between a first point in time and a second point in time, a signal output by a transmitter onto the transmission medium of the bus system reaching a first position relative to the transmission medium at the first point in time, and the signal output by the transmitter onto the transmission medium of the bus system reaching a second position relative to the transmission medium at the second point in time; evaluating the first variable, at least one time-to-digital converter device being used for determining the first variable.

Abstract: Methods, systems, and devices for wireless communications are described. A device may transmit, to a set of receiving devices, a configuration for probing a location of an object. The configuration may include a timing gap associated with at least one transmission window and a reception window for a probing pulse signal, and the configuration may indicate for the set of devices to suspend wireless communications during the timing gap to receive a reflection of the probing pulse signal. The device may transmit the probing pulse signal to the object during the transmission window. The device may receive the reflection of the probing pulse signal from the object during the reception window. In some cases, the device may update a communication configuration for the object, or another device associated with the object, based on the reflection of the probing pulse signal.

Abstract: A method includes: receiving a ranging signal from the transmitter comprising a set of multiplexed sub-signals, each multiplexed sub-signal characterized by a frequency in a set of frequencies; calculating a time-based time-of-arrival estimate based on the series of time-domain samples of the ranging signal; calculating a time-based uncertainty of the time-based time-of-arrival; for each sub-signal pair in a subset of multiplexed sub-signals of the set of multiplexed sub-signals, extracting a phase difference of the sub-signal pair; calculating a phase-based time-of-arrival estimate based on the phase difference of each sub-signal pair in the subset of multiplexed sub-signals; calculating a phase-based uncertainty of the phase-based time-of-arrival estimate; and calculating a hybrid time-of-arrival estimate as a weighted combination of the time-based time-of-arrival estimate, the phase-based time-of-arrival estimate, based on the time-based uncertainty and the phase-based uncertainty.

Abstract: A hyper-precise positioning and communications (HPPC) system and network are provided. The HPPC system is a next-generation positioning technology that promises a low-cost, high-performance solution to the need for more sophisticated positioning technologies in increasingly cluttered environments. The HPPC system is a joint positioning-communications radio technology that simultaneously performs relative positioning and secure communications. Both of these tasks are performed with a single, co-use waveform, which efficiently utilizes limited resources and supports higher user densities. Aspects of this disclosure include an HPPC system for a network which includes an arbitrary number of network nodes (e.g., radio frequency (RF) devices communicating over a joint positions-communications waveform). As such, networking protocols and design of data link and physical layers are described herein.

Abstract: An illustrative geolocation authentication system designates a movement feasibility corroboration factor as a location corroboration factor for the geolocation authentication system to authenticate geolocations of mobile devices. Based on the designating of the movement feasibility corroboration factor, the geolocation authentication system determines a first reported geolocation of a mobile device associated with a first time and a second reported geolocation of the mobile device associated with a second time. Given that the mobile device is located at a true geolocation at the second time, the geolocation authentication system then determines, based on the first and second reported geolocations of the mobile device, a feasibility metric indicative of a likelihood that the second reported geolocation of the mobile device is the true geolocation at the second time. Corresponding methods and systems are also disclosed.

Abstract: Systems and methods for mobile platform localization for a mobile platform. The system includes three independent ultra-wideband (UWB) sensors mounted on the mobile platform and a UWB localization module operationally coupled to the first UWB sensor, the second UWB sensor, and the third UWB sensor, and programmed by programming instructions to: identify first beacon UWB transmissions from a first beacon external to the mobile platform and generate a spatial location of the first beacon; identify second beacon UWB transmissions from a second beacon external to the mobile platform and generate a spatial location of the second beacon; identify third beacon UWB transmissions from a third beacon located external to the mobile platform; and generate a spatial location of the mobile platform, as a function of the spatial location of the first beacon, the spatial location of the second beacon, and the spatial location of the third beacon.

Abstract: Systems and methods for locating a position of a target object (110, 210, 410) are provided. The target object can be equipped with a plurality of spatially distributed antennas (220a, 220b, 420a, 420b), and can be located within a network of a plurality of anchors (105, 305, 505) at fixed locations. A plurality of anchor pairs (105a, 105b, 305a, 305b, 505a, 505b) can be assigned. Each anchor pair can include at least two anchors. The anchor pairs can transmit and receive range request, REQ, and range response, RSP, packets (1210,1215,1220). The REQ and RSP packets can be received by the antennas on the target object (1225,1230). Distance differences between the target object to the first anchor and from the target object to the second anchor of each anchor pair can be estimated (1235), based on times at which the REQ packet and the RSP packet are received at the target object. The position of the target object can be estimated based on the distance differences (1240).

Abstract: A tire pressure monitoring system used for a vehicle includes a sensor unit, a receiving device, and a control device. The sensor unit is provided at each wheel of the vehicle, detects tire pressure of the each wheel with a tire pressure sensor and transmits data of the detected tire pressure by radio waves. The receiving device includes a receiving antenna that is provided at an outside of the vehicle to receive the data of the tire pressure transmitted from the sensor unit. The control device includes a data acquisition unit that acquires the data of the tire pressure received by the receiving device.

Abstract: A split architecture is disclosed for determining the location of a wireless device in a heterogeneous wireless communications environment. A detector within the device or another component of the environment receives signals including parameters for a localization signal of the device. The parameters describe known in advance signals within the signals. Additional metadata including each frame start of the signals and assistance data and auxiliary information are also received. The known in advance signals are detected based on the parameters of the localization signal. Samples extracted from the known in advance signals are then processed and compressed and sent with other collect data to a locate server remote from the detector. The location server uses that information as well as similar information about the environment to calculate the location of the device, as well as perform tracking and navigation of the device, and report such results to the environment.

Abstract: The embodiments described herein provide ranging capabilities in RF-opaque environments, such as a jungle, utilizing transponders located on a property line. In particular, the embodiments described herein provide for determining a perpendicular distance to a property line from a ranging device. The transponders are located on the property line and a separated from each other by a known distance. The ranging device transmits RF signals to the transponders, which are received by the transponders and re-broadcasted back to the ranging device on a different frequency. The ranging device uses information about the transmitted and received RF signals and the known distance to calculate a perpendicular distance from the ranging device to the property line.

Abstract: Systems and methods for determining user equipment (UE) locations within a wireless network using reference signals of the wireless network are described. The disclosed systems and methods utilize a plurality of in-phase and quadrature (I/Q) samples generated from signals provided by receive channels associated with two or more antennas of the wireless system. Based on received reference signal parameters the reference signal within the signals from each receive channel among the receive channels is identified. Based on the identified reference signal from each receive channel, an angle of arrival between a baseline of the two or more antennas and incident energy from the UE to the two or more antennas is determined. That angle of arrival is then used to calculate the location of the UE. The angle of arrival may be a horizontal angle of arrival and/or a vertical angle of arrival.

Abstract: An identification device is provided having an optical detector (1), a controller (5) and an identification transmitter unit (6), wherein the optical detector (1) has a detection area with an identification pattern partially covering the detection area and the controller (5) is designed to interact with the detector (1) and the identification transmitter unit (6) in such a manner that the identification transmitter unit (6) can be activated to transmit an identification signal depending on an analysis of the temporal sequence of measurement signals from the detector (1). A method is also provided for identifying an object by an identification system.

Abstract: A method of controlling a guide machine and a navigation system. The navigation system includes: a plurality of signal sources deployed in a predetermined area; a guide machine including a signal receiver arranged to receive electromagnetic signals emitted from one or more of the plurality of signal sources; and a processor arranged to process the electromagnetic signals to identify the locations of the signal sources, and thereby to determine a current position of the guide machine with reference to the locations of the signal sources; and the processor is further arranged to determine a path for the guide machine to travel from the current position to a destination location in the predetermined area.

Abstract: A terminal area noise management method includes receiving, at a processor, aircraft information for an aircraft operating in a region in proximity to an airport; accessing a plurality of terminal area flight paths available to the aircraft; estimating a plurality of noise profiles for the aircraft, one estimated noise profile for the aircraft for each of the plurality of flight paths; calculating a plurality of cumulative noise fairness measures using each estimated noise profile; calculating a plurality of operational efficiency values for the aircraft, one or more of the calculated operational efficiency values for the aircraft for each of the flight paths; calculating a plurality of cumulative operational fairness measures using each of the calculated operational efficiency values; and selecting a flight path for the aircraft based on maximizing a cumulative noise fairness measure and a cumulative operational fairness measure.

Abstract: In a target identification device, an acquisition unit is configured to acquire trajectory information including information on a movement trajectory of a moving object in the surroundings of a vehicle. A calculation unit is configured to calculate a likelihood for each type of moving object from the trajectory information by using a plurality of models predefined for each type of moving object. A target identification unit is configured to identify the type of the moving object according to the likelihood calculated by the calculation unit.

Abstract: An electronic device includes a memory circuitry, a processor circuitry, a wireless interface, and one or more sensors. The processor circuitry is configured to obtain sensor data from the one or more sensors. The processor circuitry is configured to determine mobility data based on the sensor data. The processor circuitry is configured to control, based on the sensor data, transmission of a positioning message including the mobility data, via the wireless interface, to a location server device.

Abstract: A plurality of smart city devices are configured using an application running on a mobile device. The method includes installing a particular smart city device and automatically identifying a geo-location of the particular smart city device by identifying a current geo-location of the mobile device using a location service of the mobile device. Configuration information for the particular smart city device is entered using a user interface of the mobile device. The geo-location and the configuration information of the particular smart city device are saved in the mobile device. The installing, entering, recognizing and storing steps are repeated for each of a number of the plurality of smart city devices. The saved geo-location and the configuration information for each of the number of smart city devices are uploaded from the mobile device to a remote server.

Abstract: An array antenna configured to be placed at a determined position above the ground surface. The array antenna is assembled by a plurality of unmanned aerial vehicles (UAVs), each UAV carrying one or more antenna elements of the array antenna. The plurality of UAVs configured to create a defined formation at the determined position above the ground and thereby align the one or more antenna elements carried by the UAVs to form the array antenna. The array antenna configured to receive electromagnetic signals reflected from a region of interest, or from one or more objects, within its line of sight.

Abstract: A method for location finding includes detecting a respective phase difference between the received radio signals that are associated with each of the multiple antennas of each of the fixed transceivers. One or more respective angles are computed between each of the fixed transceivers and the mobile transceiver based on the respective phase differences. Location coordinates of the mobile transceiver are found based on the angles and the transmit locations of the transmitters.

Abstract: Systems and methods for determining a location of one or more user equipment (UE) in a wireless system can comprise receiving reference signals via a location management unit having two or more co-located channels, wherein the two or more co-located channels are tightly synchronized with each other and utilizing the received reference signals to calculate a location of at least one UE among the one or more UE. Embodiments include multichannel synchronization with a standard deviation of less than or equal 10 ns. Embodiments can include two LMUs, with each LMU having internal synchronization, or one LMU with tightly synchronized signals.

Abstract: The disclosed embodiments provide for management of a Wi-Fi network in the presence of a high priority receiver. When a high priory receiver is identified, a portion of the Wi-Fi network that could potentially interfere with the high priority receiver is identified and steps are taken to reduce the probability of such interference. For example, some wireless transmitters may be switched to alternate channels to reduce the probability of interference. By sharing information relating to high priority receivers across a plurality of wireless transmitters, the disclosed embodiments provide for more efficient operation in the presence of high priority receivers when compared to methods that independently detect a high priority receiver at each wireless transmitter.

Abstract: A system includes reception of a set of time-series data from each of a plurality of sensors, each of the plurality of sensors associated with one of a plurality of hardware devices, determination of a plurality of clusters based on the sets of time-series data, assignment of each set of time-series data to one of the plurality of clusters, and determination of associations between the plurality of hardware devices based on the assignments of time-series data to clusters.

Abstract: A method, a device, and a computer program product for managing a mobile terminal are provided. In one method, a first position of the mobile terminal at a first time point and a first signal quality of a mobile network signal of the mobile network at the first position are detected, respectively; a signal quality distribution of the mobile network signal in a surrounding area of the first position is acquired; a prediction of a second signal quality of a mobile network signal to be received by the mobile terminal at a second time point is obtained according to the signal quality distribution, the second time point being a future time point after the first time point; and according to the first signal quality and the prediction of the second signal quality, a second service quality to be provided to the mobile terminal at the second time point is determined.

Abstract: Aspects of the subject disclosure may include, for example, obtaining user input identifying a first user-identified network feature of a training image of a geographical region. The training image and the user-identified feature are provided to a neural network adapted to train itself according to the user-identified features to obtain a first trained result that classifies objects within the image according to the user-identified feature. The training image and the first trained result are displayed, and user-initiated feedback is obtained to determine whether a training requirement has been satisfied. If not satisfied, the user-initiated feedback is provided to the neural network, which retrains itself according to the feedback to obtain a second trained result that identifies an updated machine-recognized feature of the training image. The process is repeated until a training requirement has been satisfied, after which a map is annotated according to the machine-recognized feature.

Abstract: Wireless local area network (WLAN) field coverage is analyzed in a venue. A mobile data capture device measures coverage data indicative of the WLAN field coverage from a plurality of locations in the venue, and also captures image data indicative of images of the locations in the venue. A controller correlates the measured coverage data and the captured image data at each location. An interface displays the captured image data correlated with the measured coverage data at each location. Impact score value data indicative of the WLAN field coverage may also be determined, correlated, and displayed for each location.

Abstract: A method of training a predictor to predict a location of a computing device in an indoor environment incudes: receiving training data including strength of signals received from wireless access points at positions of an indoor environment, where the training data includes: a subset of labeled data including signal strength values and location labels; and a subset of unlabeled data including signal strength values and not including labels indicative of locations; training a variational autoencoder to minimize a reconstruction loss of the signal strength values of the training data, where the variational autoencoder includes encoder neural networks and decoder neural networks; and training a classification neural network to minimize a prediction loss on the labeled data, where the classification neural network generates a predicted location based on the latent variable, and where the encoder neural networks and the classification neural network form the predictor.

Abstract: A method of processing incoming signals, such as RF signals, includes receiving the incoming RF signals at two (or more) spatially-separated receivers, then processing the signals to determine a phase lag between the two signals. This allows a presumed location of the signal source to be determined, based on the time difference of arrival (TDOA) of signals at the separated receivers. This can be used to produce a phase adjustment of one of the signals, allowing the signals to be coherently summed. The coherently summed combined signal is then examined for instances where a threshold magnitude is exceeded. This information is then used to create a blanking mask, which is then employed as a filter to incoming signals, to blank out non-coherent signals, such as noise and extraneous signals from sources that are not of interest. The blanked signal train is then examined/analyzed for constant pulse repetitions.

Abstract: An apparatus and associated methods for measuring thickness and velocity of flat moving materials utilizing high frequency radar technologies. Two identical radar-based systems for measuring absolute distances between the source of the radar-generated electromagnetic wave and each surface of a flat sheet material is used to determine the thickness of that material as a relative distance. A pair of high frequency radars situated at different locations used to measure the delay time between the occurrences of fingerprint-like unevenness on the moving flat sheet of material to determine the linear velocity of the moving material sheet.

Abstract: A method whereby a user equipment transmits/receives a reference signal for distance measurement in a wireless communication system according to an embodiment of the present invention comprises: a step of receiving, from a base station, a downlink (DL) positioning reference signal (PRS) including sinusoidal components of different angular frequencies; a step of acquiring a phase difference between the sinusoidal components of the DL PRS; a step of transmitting a first uplink (UL) PRS indicating the phase difference, so as to measure a first distance between the user equipment and the base station at a first point of time; and a step of transmitting a second UL PRS so as to measure a second distance between the user equipment, the position of which has changed after the first point of time, and the base station, wherein the user equipment may configure the same phase difference, acquired via the DL PRS before the first point of time, for the second UL PRS, without receiving an additional DL PRS for measuring t

Abstract: A system having a distributed node hardware and software product is disclosed. The distributed topology allows for multiple GPS receiver node positions. The multiple GPS receiver node positions enable an accurate location estimation of a GPS spoofing signal emitter source of an incoming malicious GPS signal. The system detects the presence of a GPS spoofing signal emitter with high confidence against any spoofing geometry or strategy while the GPS receiver nodes are on the move.

Abstract: A split architecture is disclosed for determining the location of a wireless device in a heterogeneous wireless communications environment. A detector within the device or another component of the environment receives signals including parameters for a localization signal of the device. The parameters describe known in advance signals within the signals. Additional metadata including each frame start of the signals and assistance data and auxiliary information are also received. The known in advance signals are detected based on the parameters of the localization signal. Samples extracted from the known in advance signals are then processed and compressed and sent with other collect data to a locate server remote from the detector. The location server uses that information as well as similar information about the environment to calculate the location of the device, as well as perform tracking and navigation of the device, and report such results to the environment.

Abstract: In a method for estimating a position of a missile, an incident angle of a signal of a radar irradiated to the moving missile is calculated. The incident angle is defined by an angle between a measurement vector indicating a direction from the radar toward the missile and a movement vector indicating a moving direction of the missile. A distance compensation value from a point on a surface of the missile to an origin point of the missile is calculated based on the calculated incident angle. A distance from the radar to the origin point of the missile is calculated based on the calculated distance compensation value and a distance from the radar to the point on the surface of the missile. A position of the missile is estimated based on a position of the radar and the calculated distance from the radar to the origin point of the missile.

Abstract: Within several applications the ability to localize an individual within an environment is beneficial. However, existing indoor localization approaches depend upon at least one of two assumptions. First, the subject(s) localization is achieved by localizing a wireless device carried by the subject and second, wireless fingerprints are established for the localization via a site survey being performed before a system can actually localize the subject(s). However, in many application scenarios, neither of the above two assumptions are true, namely that the user is not carrying an active wireless device or that the site has been surveyed. Accordingly, embodiments of the invention provide for subject localization by a dynamic calibration of wireless signals between a receiver and a transmitter, where neither the receiver or transmitter are associated with an electronic device carried or worn by the subject.

Abstract: Methods and apparatus for determining an item of equipment in a direction of interest based upon coordinates derived from wireless communication between wireless transceivers. A smart device assembly is operative to communicate via multiple antennas with a reference point transceiver. A set of coordinates is generated indicating a relative position and/or angle of the wireless transceiver in relation to the reference position transceiver. A query may be made based upon the relative position and angle of the wireless transceiver in relation to the reference position transceiver. A response to the query may include a human readable interface indicating one or more of: direction of travel, a virtual image based upon location and location and direction, and annotative and pictorial information.

Abstract: Systems and methods for determining user equipment (UE) locations within a wireless network using reference signals of the wireless network are described. The disclosed systems and methods utilize a plurality of in-phase and quadrature (I/Q) samples generated from signals provided by receive channels associated with two or more antennas of the wireless system. Based on received reference signal parameters the reference signal within the signals from each receive channel among the receive channels is identified. Based on the identified reference signal from each receive channel, an angle of arrival between a baseline of the two or more antennas and incident energy from the UE to the two or more antennas is determined. That angle of arrival is then used to calculate the location of the UE. The angle of arrival may be a horizontal angle of arrival and/or a vertical angle of arrival.

Abstract: A computer-implemented method, system, and computer program product are provided for positioning an unmanned autonomous vehicle (UAV) in a long term evolution radio access network. The method includes acquiring, by a processor-device, a position of the UAV with a global position system. The method also includes determining, by the processor-device, physical distances from the UAV to each of a plurality of user equipment (UE) responsive to a time-of-flight from the UAV to each of the plurality of UE. The method additionally includes generating, by the processor-device, radio environment maps for each of the plurality of UE with signal-to-noise ratios (SNR) from each of the plurality of UEs to the UAV. The method further includes selecting, by the processor-device, a determined position for the UAV as a position with a minimum SNR in the REMs. The method also includes commanding the UAV to move to the determined position.

Abstract: The embodiments described herein provide ranging capabilities in RF-opaque environments, such as a jungle, utilizing transponders located on a property line. In particular, the embodiments described herein provide for determining a perpendicular distance to a property line from a ranging device. The transponders are located on the property line and a separated from each other by a known distance. The ranging device transmits RF signals to the transponders, which are received by the transponders and re-broadcasted back to the ranging device on a different frequency. The ranging device uses information about the transmitted and received RF signals and the known distance to calculate a perpendicular distance from the ranging device to the property line.

Abstract: A method of determining spin parameters of a sports ball, such as spin axis and rotation velocity of a golf ball. The spin axis is determined solely from the trajectory of the flying ball, and the rotational velocity is determined from a frequency analysis of a signal provided by a radar, which signal comprises spectrum traces positioned equidistantly in frequency, which frequency distance relates to the spin velocity.

Abstract: A non-transitory computer-readable recording medium having stored therein a communication control program for causing a computer to execute a process includes: receiving, from each of a plurality of base stations, communication result between the respective base stations and a communication terminal; storing, when the received communication result indicates that transmission of a message from a first base station to a specific communication terminal is failed, the message in a storage in association with identification information on the specific communication terminal; and referring, when the received communication results indicates that communication is established between a second base station and the specific communication terminal, to the storage, transmitting the message stored in association with the identification information on the specific communication terminal to the second base station, and requesting the second base station to transmit the message to the specific communication terminal.

Abstract: Methods and apparatus for determining a direction of interest based upon coordinates derived from wireless communication between wireless transceivers. A smart device assembly is operative to communicate via multiple antennas with a reference point transceiver. A set of coordinates is generated indicating a relative position and/or angle of the wireless transceiver in relation to the reference position transceiver. A query may be made based upon the relative position and angle of the wireless transceiver in relation to the reference position transceiver. A response to the query may include a human readable interface indicating one or more of: direction of travel, a virtual image based upon location and location and direction, and annotative and pictorial information.

Abstract: Methods and apparatus for determining a location and an orientation of a smart device via wireless communication. The location and direction of the smart device may be used to generate a data query and/or submit information into a data storage, referencing a time, place and direction of the smart device.

Abstract: Described is an machine-readable storage media having instruction stored thereon, that when executed, cause one or more processors to perform an operation comprising: sequentially transmit, in a first mode, at least two first probe request messages in at least two beam steering directions, respectively, towards a device; and receive, from the device, at least two first probe response messages in response to transmitting the at least two first probe request messages.

Abstract: A fireman positioning system includes: a first radio wave emitting device and a second radio wave emitting device, spaced with a predetermined distance and utilized for correspondingly emitting a first frequency modulated signal and a second frequency modulated signal; and a position receiving device, carried or worn by a fireman, and utilized for receiving the first frequency modulating signal and the second frequency modulating signal, and can demodulate the first frequency modulated signal via a first carrier signal so as to obtain a first output signal, and demodulate the second frequency modulated signal via a second carrier signal so as to obtain a second output signal, wherein a phase difference is formed between the first output signal and the second output signal, and the position receiving device can determine a direction angle of the fireman relative to the two radio wave emitting devices via the phase difference.

Abstract: A configurable site safety system includes a plurality of wearable signaling devices, each with an array of independently addressable lighting elements, a location receiver and one or more communication interfaces. The system may also include a site safety server to track location information received from at least each of the signaling devices, and to cause, based on a subset of the plurality of signaling devices satisfying defined geographical, event-based or other defined criteria, the lighting array of each of the subset of signaling devices to display a defined lighting scheme.

Abstract: Methods and apparatus for determining a location and an orientation of a smart device via wireless communication. The location and direction of the smart device may be used to generate a data query and/or submit information into a data storage, referencing a time, place and direction of the smart device.

Abstract: A method of receiving a recommendation of Point of Interest (POI) information from a place recommending apparatus is provided. The method includes sending a POI information recommendation request to the place recommending apparatus using sensor data and receiving a recommendation response to the POI information recommendation request from the place recommending apparatus based on user-desired environment information.

Abstract: The invention provides a system and method for receiving hazard and event information in a mobile unit and using that information to warn a user of an event or future hazard with reference to the mobile unit's location and/or intended direction of travel. A hazard location algorithm compares a forecast location of each mobile unit with a forecast hazard and transmits a warning to each mobile unit that is predicted to encounter the hazard. As the mobile unit moves, its actual position is updated in an event center, and a revised warning is transmitted to the mobile unit as applicable. Warnings include audio warnings for playback and/or visual warnings for display on the mobile device. Users may also wirelessly report events or hazards to a central server in an event center by sending data to the event center via a wireless communications network. Secondary information may be included, based on the selected event type.

Abstract: A method for tracking a device determines correlations among locations of the device including a set of previous locations of the device and an initial estimate of a current location of the device, and determines, for each access point (AP), a current path loss exponent for the current location of the device using previous path loss exponents determined for the previous locations of the device and the correlations among the locations of the device. The method determines the current location of the device according to a path loss model using received signal strengths (RSS) of signals received from each AP at the current location and the current path loss exponent determined for each AP. The current path loss exponent for each AP are updated using the current location of the device and the RSS of signals received from the corresponding AP.