A hidden node interference reduction method of an access point of a wireless communication network is disclosed, wherein the access point is adapted to serve a plurality of mobile terminals. The method comprises receiving a signal from at least two of the plurality of mobile terminals in response to transmitting the positioning signal, wherein each signal is indicative of a position of the respective mobile terminal. The method further comprises partitioning the plurality of mobile terminals into one or more groups by determining a metric for at least one pair of mobile terminals based on the indicated positions (wherein the pair of mobile terminals comprises a first mobile terminal and a second mobile terminal, and wherein the metric is associated with a distance between the first mobile terminal and the second mobile terminal of the pair of mobile terminals) and letting the first and second mobile terminals of the pair of mobile terminals belong to different groups if the metric fulfills a condition (wherein the condition is indicative of the first mobile terminal causing hidden node interference to the second mobile terminal). The method also comprises allocating a separate respective frequency resource to each group of mobile terminals. Corresponding computer program product, arrangement and access point are also disclosed.