59 results about "Radio location" patented technology

Methods and systems for adapting positioning reference signal (PRS) transmissions are disclosed. A server receives a request to support an emergency call associated with a user equipment (UE) and sends a first PRS schedule to a first base station, the first PRS schedule configured to enable the first base station to switch to a first emergency PRS mode and to transmit PRS signals according to the first PRS schedule. The base station establishes a PRS schedule, switches to an emergency PRS mode, and transmits PRS signals in accordance with the PRS schedule. A UE initiates an emergency call, receives positioning assistance data from a server, performs terrestrial radio location positioning measurements based on the received positioning assistance data, and provides the terrestrial radio location positioning measurements or a location computed from these measurements to the server.

A method and apparatus for selecting radio stations for reception based on a preferred program content. A list of radio station identifiers is stored in a memory and organized according to program content specifiers. When a presently received signal fades, the memory is searched for an alternate radio station with similar program content. If none is available, a prioritized list of alternative program content preferences is accessed and used to index other preferred radio stations for searching. In one embodiment, radio station geographic location information is stored in the memory, and the searching operation considers both program content preference and geographic proximity. The memory can be manually programmed, pre-programmed, updated by subscription, or programmed over-the-air by radio transmission. In one embodiment, a global positioning system receiver is employed to provide instantaneous radio location information.

A location measurement unit 401 for a radio location measuring system has two or more coupling devices 404,405 for picking up the signals from a plurality of base transceiver stations (BTSs) of a cellular radio communication system. A switching device 510, is connected to the coupling devices, for switching between the signals picked up by the coupling devices and/or one/two or more receivers 510, 610-613 are connected to respective coupling devices, for receiving the signals picked up by the coupling devices. A processor 512, 614 is connected to the or each receiver, for processing the signals output by the receiver. A communications link 513, 615 is connected to the processor, for transferring the processed signals to a calculation node 514.

A target radio can be located and tracked by an array of anchor radios. The anchor radios are calibrated when each anchor radio transmits an anchor message that is received by the other anchor radios. The distance between anchor radios is known because their positions are known. The received signal strengths are dependent on distance and an attenuation value. The calibration operation uses the received signal strengths and known anchor radio locations to determine the attenuation values of the anchor radios. After calibration, a target radio transmission can be received by the anchor radios. Each anchor radio estimates the distance to the target. The distance estimates and the anchor locations can then be used to determine the target radio's location.

Methods and apparatus for using an energy emanating device to find a person (17a,b) or an object based on preselected attributes (33) stored in the energy emanating device (10) are disclosed. A network radio (52) enables the user of the device to communicate with others over a wireless network (50) via voice calls, text messaging, instant messaging, e-mails and Internet access.

An environment analysis system for indoor wireless location by using locations of a plurality of access points (AP) includes, a first environment analysis tool (10) for receiving indoor environment information for indoor wireless location, performing a simulation for calculating location accuracies, performing a simulation for relocating and/or additionally installing the access points (AP), and displaying results of the simulation; and a second environment analysis tool (20) for receiving wireless communications signals from the access points (AP), calculating distances from the second environment analysis tool (20) to the access points (AP), calculating a location of the second environment analysis tool (20), calculating errors in the distances and in the location calculated, and providing the errors calculated to the first environment analysis tool (10). The first environment analysis tool (10) corrects errors in the simulations performed thereby by using the errors received from the second environment analysis tool (20), and then repeats the simulations and the displaying process.

The invention discloses an indicating method of a positioning system information sending window, a terrestrial radio location signal sending device, a wireless communication access point, a radio location terminal and a wireless communication access point-assisted positioning system. The indicating method comprises the following step: indication information for indicating the position of a positioning system information sending window is sent into a service area from a first carrier sent by a first wireless communication access point complying with a first wireless communication mode. The sending mode of positioning system information is specifically as follows: in a positioning system information sending window carried by a second carrier sent by the first wireless communication access point complying with a first or second wireless communication mode, or in a positioning system information sending window carried by the first carrier sent by a second wireless communication access point complying with the first wireless communication mode, positioning system information is sent to the radio location terminal. According to the invention, base station downlink capacity and spectrum resource occupation can be avoided.

A system and method for determining the relative position of stations through radio location is proposed. In one aspect, a station is configured as an apparatus having at least one antenna. At least one first station has at least one first antenna, and at least one second station has at least two base-modulated antennas. The first station sends at least one locating signal via the first antenna. The second station reflects the locating signal as a first modulated reflected locating signal via a first base-modulated antenna and as a second modulated reflected locating signal via a second base-modulated antenna. The first station receives the modulated reflected locating signals via the antenna. The phase relationships of the received modulated reflected locating signals are used to ascertain at least one position angle for the relative position between the first station and the second station.

A method of determining speed and heading of a rover/rover having one degree of freedom comprising the following steps: (A) determining a rover position coordinates using at least one source of a radio position measurements; (B) storing a set of statistically different rover points in a memory block, and (C) using a subset of rover points including a plurality of stored rover points and a current rover point to determine a speed and a heading of the rover. It is assumed that each rover point comprises a time Epoch and a rover position determined at time Epoch, and that each pair of statistically different rover points comprises two rover positions separated by a statistically significant distance.

The invention relates to a radio location method based on reach path reverse tracking, using multi-path and NLOS path signal idea for locating, adopting the information fusion technology for reverse tracking different signal reach paths of the base station, gradually reducing the position feasible region of the mobile table and locating the mobile table. The radio location method adopts the environment geographic information for reducing the impact to the location result from the NLOS error, raising location precision and raising the effectiveness of the reverse ray tracking location method, the location precision is more accurate for more reach paths, the reliability of the radio location method is improved, the location precision is higher and the robustness is stronger.

Methods and apparatus for using an energy emanating device to find a person (17a,b) or an object based on preselected attributes (33) stored in the energy emanating device (10) are disclosed. A network radio (52) enables the user of the device to communicate with others over a wireless network (50) via voice calls, text messaging, instant messaging, e-mails and Internet access.

A radio-location method of locating a target device that is contained within a region of space, comprising obtaining a first set of detected signals by detecting, at a plurality of points in space, a beacon signal from the target device, or by detecting at the target device, beacon signals sent from one or more radio transmitters in the region of space; determining a current estimate of the target device's location; obtaining successive sets of detected signals, for each successive set of detected signals: determining one or more candidate locations for the target device; comparing the candidate locations with a radio map of the region of space, identifying one or more feasible candidate locations that are consistent with the radio map; determining a new estimate of the target device's location based on the one or more feasible candidate locations; and setting the new estimate as the current estimate of the target device's location.

In a radio location system for vehicles moving along a guideway, a transmitter for energizes a transponder beside the guideway. A first detector for detects a response signal from the energized transponder to determine the transponder identification. A second detector detects a positional signal received from the transponder that is decoupled from the first signal and contains precise positional information. In one embodiment, the second detector picks up a crossover signal from a crossover antenna.

Methods and apparatus for using an energy emanating device to find a person (17a,b) or an object based on preselected attributes (33) stored in the energy emanating device (10) are disclosed. An alternative embodiment provides a relationship prediction based on the correlation of personal characteristics and the analysis of genetic characteristics.

A method and device for channel allocation using channel allocation tiering (CHAT), where radio resources are de-coupled from hardware resources and the available hardware resource units in a cell are divided into logical groups, “channel tiers”. Each tier simultaneously utilizes, partly or fully, the same radio resources. There is a first tier and at least a second tier. In accordance with the invention terminals are allocated to the first tier until a radio resource load threshold close to but less than 100% is reached. Terminals are allocated channels on said at least second tier based upon a terminal's interference suppression capabilities, or the radio requirements of the service being used on the terminal, or the radio location of the terminal, or a combination of the above.

User throughput fairness between a small cell and a macrocell is improved without affecting load balancing with another small cell. A radio station (100) having a radio area (100a) thereof, at least a part of which is adjacent to a radio area (300a) which is larger than the radio area (100a) of the radio station (100) and is managed by another radio station (300), acquires a load on the own station and a load on the another radio station and controls the transmission power of a radio terminal (200) connected to the radio area of the own cell, based on the relative magnitude of the load on the own cell to the load on the another radio station.

The disclosure generally relates to a method, apparatus and system for identifying non-compliant radio emissions and for enforcing compliance. In one embodiment, the disclosure relates to a dynamic radiation control of a radio by measuring a signal attribute for an outbound signal having a protocol; comparing the signal attribute with a predefined mask, the predefined mask governed by at least one of a radio location or a signal protocol; and determining whether to transmit the outbound signal.

The invention relates to a method and an apparatus for monitoring a drive of a vehicle in which the practical parameter for representing a movement of the vehicle and a rated parameter for representing the desired movement of the vehicle are compared, wherein the practical parameter for respresting the movement of the vehicle is formed by using signals of radio location.

A radio position and two-way information transmission is an accurate, three dimension positioning technology. Spectrum spread and FH is applied to up line, working band at 2M to 2.4G and three ways can be applied to down stream 1. POCSAG message call play, or Eurosignal bp or Eemes enhanced radio information system. The center asks a position device to give the signal intensity and the nearest ID number to the positioner and receives feedback signals transferred by other two base station devices close to the first which are different in three things: A. different ID number to each station B. different signal field intensities C. Different arriving time. The central vector computer computes the three-dimension coordinates of positioner by an triangle checking method.