A measurement method performed at a receiving device involves sequentially receiving RF signals, each comprising a different set of at least first and second tones at differing frequencies. Complex gain responses (CGRs) for each of the first and second tones of each of the RF signals are measured. A phase offset is determined between: i) a phase of the CGR of the second tone of a first RF signal, and ii) a phase of the CGR of the first tone of a second RF signal. A coherent channel frequency (CCF) response of the second tone of the second RF signal is computed by adjusting a phase of the CGR of the second tone of the first RF signal by the phase offset. A processor executes a signal paths calculation algorithm using the CCF response of the second tone of the second RF signal to determine an angle or time of arrival of the first RF signal.

This application provides example positioning methods and example apparatuses. One example method includes sending, by a positioning management network element, a positioning measurement request to a positioning measurement network element. The positioning measurement request is used to request the positioning measurement network element to feed back channel state information of a terminal device. Then, the positioning management network element receives a positioning measurement response from the positioning measurement network element. The positioning measurement response includes the channel state information of the terminal device. Then, the positioning management network element determines a location of the terminal device based on the channel state information of the terminal device.

Methods and systems for determining a device position include determining a first position estimate using radio-based range information. A second position estimate is determined using visual odometry information. The first position estimate and the second position estimate are fused based on radio environmental conditions and visual environmental conditions to determine a final position estimate. Resources are deployed based on the final position estimate.

In accordance with a first aspect of the present disclosure, a localization device is provided, comprising: an ultra-wideband, UWB, communication unit configured to transmit a localization signal to an external device and to receive a response signal from the external device; an angle of arrival measurement unit configured to measure an angle at which the response signal is received; an orientation sensor configured to sense an orientation of the localization device; and a processing unit configured to determine if an angle at which the localization signal is received by the external device, an orientation of the external device, said orientation of the localization device, and said angle at which the response signal is received meet a predefined relationship. In accordance with a second aspect of the present disclosure, a corresponding method of operating a localization device is conceived.

A method is disclosed, performed by a first wireless node, such as a wireless device, for enabling positioning of the wireless device. The method comprises providing, to a network node, a measurement report comprising a positioning measurement based on one or more reference signals transmitted from one or more second wireless nodes, such as base stations. The measurement report comprises an indication as to whether the positioning measurement is performed on a Line of Sight, LoS, component of the one or more reference signals.

A UE includes: a transceiver configured to receive positioning signals from a positioning-signal source; a memory; and a processor communicatively coupled to the transceiver and the memory, the processor configured to: measure a plurality of the positioning signals, from a plurality of ports, spanning a collection of Orthogonal Frequency Division Multiplexed symbols to obtain a plurality of multi-port measurements; determine, based on the plurality of multi-port measurements, that a particular effective beam corresponds to an earliest time of arrival from the positioning-signal source to the UE of a plurality of effective beams associated with the plurality of ports; and send, via the transceiver to a first network entity, abeam indication indicative of the particular effective beam.

A communication device, computer program product, and method mitigate interference during mobility management of antenna beam selection. A controller of the communication device determines a first direction to a first downlink from a base station downlink that is beam steered toward the communication device. The controller determines a second direction to a second downlink from the base station that is beam steered toward a second communication device. The controller determines a scan cone of two or more beam entries oriented generally in the first direction and being at least one of angularly narrowed or directed away from the second direction to avoid receiving the second downlink. The controller configures the RF frontend of the communication device with a reduced codebook based on a subset of the two or more beam entries within the scan cone for mobility management of the communication device.

A communication device comprising: a wireless communication section; and a control section configured to correlate a first signal with a second signal from another communication device at a designated interval, convert a data matrix including an array of a plurality of correlation computation results into a format including a matrix product of an expanded modal matrix and an expanded signal matrix, estimate the expanded signal matrix that minimizes a predetermined norm, and estimate reception time of the second signal on a basis of the expanded signal matrix that minimizes the predetermined norm.

The disclosure relates to a detection method and a detection apparatus, the method including: calculating, when a location base station in an ultra-wideband location system receives a pulse response, values of a plurality of specified pulse response characteristics using the received pulse response, and using the calculated values as values of the plurality of specified pulse response characteristics of the location base station; calculating differences between the values of the plurality of specified pulse response characteristics of the location base station and values of the plurality of specified pulse response characteristics of the location base station at a previous time, and using the calculated differences as variations of the plurality of specified pulse response characteristics of the location base station; determining, based on at least the variations of the plurality of specified pulse response characteristics of the location base station and by means of a trained classifier, whether signal propagation in which the location base station participates is non-line-of-sight propagation.

The invention relates to a method and a system for position determination of at least one object, in particular inside a building. In a method for position determination of at least one object, at least four transmitters transmit circularly polarized signals and a receiver to be localized receives the circularly polarized signals. At least two and in particular all transmitters transmit periodic signals of different frequencies, these frequencies being closely adjacent.