Nokia Corporation

Ari Henrik Hamalainen

Ilari Teikari

Ville Ranki

Antti Paavo Tapani Kainulainen

Janne Laakso

Kimmo Valkealahti

A method, comprising: periodically enabling reception of a signal at a receiver, every first time; transforming the received signal in order to determine data in the received signal; comparing the determined data with reference data; and using the difference between the determined data and the reference data to estimate a correction to a multiple of the first time in order to determine a distance between the receiver and an origin of the signal.

Distance estimation

An apparatus, a method and a computer program for determining a bearing. The apparatus may comprise: a first transformer configured to transform a first signal formed from a set of multiple orthogonal subcarriers and received via a first path, from a time domain to a frequency domain and produce for each of a plurality of the multiple orthogonal subcarriers a respective first coefficient; a second transformer configured to transform a second signal formed from the set of multiple orthogonal subcarriers and received via a second path, different from the first path, from a time domain to a frequency domain and produce for each of a plurality of the multiple orthogonal subcarriers a respective second coefficient; and processing circuitry configured to process the plurality of first coefficients and the plurality of second coefficients to determine a bearing for the apparatus.

Bearing determination using signals transformed into frequency domain

There is disclosed a technique for estimating a power change, particularly a power increase, in a communication system caused by a change in the load in the system. The technique particularly relates to a mobile communication system.

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Vantaa, Finland

Ari Henrik Hamalainen