Methods for facilitating a relative position determination

A radio frequency, RF, communication device, comprising:

• a measurement unit configured to measure an angle of arrival of RF signals received from an external RF communication device;
• a sensor configured to sense the orientation of the RF communication device;
• a processing unit;
• wherein the measurement unit is configured to measure a first angle of arrival and a second angle of arrival;
• wherein the sensor is configured to sense a first orientation and a second orientation;
• wherein the processing unit is configured to determine the relative position of the second RF communication device with respect to the first RF communication device using a difference between the first angle of arrival and the second angle of arrival and a difference between the first orientation and the second orientation;
• and
• wherein the processing unit is configured to correlate the difference between the first angle of arrival and the second angle of arrival with the difference between the first orientation and the second orientation, and wherein the first angle of arrival is confirmed if the result of said correlation matches an expected correlation result.

A method for facilitating a relative position determination, comprising:

• a first radio frequency, RF, communication device measures a first angle of arrival, being an angle of arrival of an RF signal received from a second RF communication device;
• the first RF communication device senses its orientation, resulting in a first orientation;
• the second RF communication device measures a second angle of arrival, being an angle of arrival of an RF signal received from the first RF communication device;
• the second RF communication device senses its orientation, resulting in a second orientation;
• the relative position of the second RF communication device with respect to the first RF communication device is determined using a difference between the first angle of arrival and the second angle of arrival and a difference between the first orientation and the second orientation;
• and
• wherein the difference between the first angle of arrival and the second angle of arrival is correlated with the difference between the first orientation and the second orientation, and wherein the relative position of the second RF communication device with respect to the first RF communication device is determined if the result of said correlation matches an expected correlation result.