An electronic building automation system, comprising one or more electronic building automation devices, comprising a beacon receiver arranged to receive localizing beacon signals transmitted from multiple beacons, a processor circuit configured to generate a service request comprising the beacon identifiers stored in the beacon identifier memory, the control computer arranged to generate a servicing message comprising data localizing the building automation device, said data being obtained from the beacon identifiers in the received service request.

In an aspect, a wireless node (e.g., UE or BS) determines timing information associated with a first one or more reference signals for positioning or with a first one or more measurements derived using the first one or more reference signals for positioning, the first timing information including a transmit or receive hardware group delay, timing error, timing calibration error, or a combination thereof. The wireless node further determines that the first one or more reference signals or the first one or more measurements are associated with one of a plurality of timing groups at least based on the first timing information. The wireless node transmits (e.g., to a position estimation entity) an indication of the associated timing group in association with the first one or more reference signals for positioning or with the first one or more measurements derived using the first one or more reference signals for positioning.

The invention relates to a method and a system for aircraft navigation along a predetermined airway, including an on-board navigation system supplying a positioning integrity of the aircraft during flight relative to said airway respecting an expected position precision performance level, and at least one on-board radio receiver on the aircraft suitable for communicating with at least one land-based radio beacon suitable for supplying a distance of the aircraft relative to said radio beacon. The system includes a module configured to obtain, from a current position of the aircraft and stored data, a tuple of radio beacons to be used, a module configured to obtain a distance measurement of the aircraft relative to each of the N radio beacons of said tuple, a module configured to compute an integrity position from distance measurements obtained by a predetermined computing method, and a module configured to use the computed integrity position as current integrity position.

A method may include generating a receive timing error group (Rx TEG) based on a time delay of a receive (Rx) signal, wherein the time delay is a time measured from an arrival of the Rx signal at a Rx antenna to a time of the Rx signal being digitized and time-stamped at a baseband processor of a user equipment (UE), determining a timing error group (TEG) index corresponding to the generated Rx TEG, determining a positioning measurement associated with the Rx antenna used to generate the Rx TEG, and reporting the positioning measurement associated with the Rx TEG index.

A method is disclosed. In various examples, the method may include receiving an instruction for generating a signal comprising a ranging signal and a data signal. The method may also include transmitting, via a terrestrial transmitter for transmitting radio waves having encoded messaging information and timing information for one or more of positioning, navigation and timing, the signal at least partially responsive to the instruction. The signal may include a pulse group comprising a number of ranging pulses and a number of data pulses subsequent to the number of ranging pulses. Respective ones of the number of data pulses may have a phase of either a positive-going phase or a negative-going phase. Information may be encoded using the either positive-going phases or negative-going phases of the data pulses.

A mobile radio direction finding (RDF) calibrator, and a method of using it to calibrate an RDF system aboard a vehicle. The calibrator has a GPS (global positioning satellite) or other GNSS (global navigation satellite system) receiver, which permits the calibrator to make its location known to the calibration process of the RDF-equipped vehicle. During calibration, the calibration process controls the calibrator remotely. As the RDF-equipped vehicle moves in a circle, it collects calibration response data, as well as location data, so that the calibration response data can be mapped to the correct azimuth.

Disclosed are various techniques for wireless communication. In an aspect, a user equipment (UE) may determine that the UE is or will be at a location within a calibration region. The UE may report, to a network entity, location information, the location information being associated with the location within the calibration region. In an aspect, a network entity may obtain calibration error information associated with a user equipment (UE) and a calibration region. The network entity may send the calibration error information to the UE, to a base station, or to combinations thereof.

An electronic building automation system, comprising one or more electronic building automation devices, comprising a beacon receiver arranged to receive localizing beacon signals transmitted from multiple beacons, a processor circuit configured to generate a service request comprising the beacon identifiers stored in the beacon identifier memory, the control computer arranged to generate a servicing message comprising data localizing the building automation device, said data being obtained from the beacon identifiers in the received service request.

A radio frequency (RF) device includes a spatial orientation sensor and logic circuit configured to determine spatial orientation of the RF device relative to a reference position or relative to a RF transmitter. In particular, the RF device determines a distance between the RF receiver and the RF transmitter based on a received signal strength of the signal and a determined spatial orientation of the RF device, by determining an orientation compensation value from a stored orientation compensation profile and determining a resulting compensated received signal strength. The RF device is thereby able to determine distance in an orientationally-invariant manner.

The invention relates to calibrating a device or a system for signal-transit-time measurement or signal-transit-time-measurement-based distance measurement on the basis of at least one phase measurement. A method for calibrating at least one system for carrying out a signal-transit-time measurement where the system is designed, in cooperation with a first object, to carry out a distance measurement on the basis of a phase measurement, at least one first distance measurement to the first object being carried out by means of phase measurement, particularly by phase shifting and/or modifying a phase shift by the frequency, and at least one signal-transit-time measurement or a second distance measurement carried out on the basis of at least one signal-transit-time measurement to or via the first object. The system is calibrated on the basis of at least one signal-transit-time measurement by means of the at least one first phase measurement.