Patent ID: 8761835

Claim:
A wireless communication node adapted to be connected to an antenna part with a plurality of antenna elements and one antenna port for each of the plurality of antenna element, the wireless communication device comprising: a plurality of feeder ports to be connected to the plurality of antenna elements via respective antenna ports, each antenna port being associated with a unique antenna port identification, and each feeder port being associated with a unique feeder port identification; a signal analyzing unit to analyze a signal received from a mobile station, and to, for each pair of antenna elements, calculate respective phase difference or phase angle between the signals from the antenna elements of the pair; a phase progression function handling unit to calculate or collect a phase progression function over the antenna ports based on information about relationships between distance between antenna elements and signal wavelength; a connection combination handling unit to find all possible combinations of connections between the antenna ports and the feeder ports and for each connection combination the corresponding phase angle or phase difference; an ordering unit to order the phase angles or phase differences for each combination; and an error detecting unit to fit the ordered phase angles or differences to the phase progression function to find the errors between the ordered, calculated phase differences or phase angles corresponding to each connection combination and the phase progression function and to identify the connection combination for which the error of the fit is lowest.