Abstract: The present invention relates to a method and arrangement for positioning at least two devices, a first and a second device relative each other. The method comprises: transmitting a number of magnetic pulses with the first device, detecting said pulses with the second device, based on said detected pulses generating a number of virtual planes, and determining a crossing line between said planes corresponding to a direction between said devices.

Abstract: A method and system for alignment of sensor units comprised in at least two independent communication devices operating in the same environment, the method may comprise the steps of receiving a first signal representing sensor data collected by a first sensor unit comprised in a first communication device, receiving a second signal representing sensor data collected by a second sensor unit comprised in a second communication device, calculating a correlation function between the first signal and the second signal, defining the time difference between first and second signals by finding a maximum in the correlation function while time shifting the first and the second signals and calibrate the first and second sensor units to compensate for the defined time difference.

Abstract: The present invention relates to a method and arrangement for positioning at least two devices, a first and a second device relative each other. The method comprises: transmitting a number of magnetic pulses with the first device, detecting said pulses with the second device, based on said detected pulses generating a number of virtual planes, and determining a crossing line between said planes corresponding to a direction between said devices.