The present disclosure relates to methods with regards to D2D communication. According to one aspect, this disclosure proposes method of interference mitigation, performed in a network node in a cellular communication system the network node serving a wireless device supporting device-to-device, D2D, communication. The method comprises receiving S1 from the wireless device, at least one control message comprising resource allocation information associated with D2D transmissions of other wireless devices, which transmissions are obtained by the wireless device. The method further comprises utilizing S2 the received resource allocation information when allocating resources and/or providing the received information to network nodes of neighbor cells and/or to wireless devices served by the network node for utilization when allocating resources. Because the network node retrieves information about the D2D environment, resource allocation and synchronization may be optimized. The disclosure also relates to the corresponding method in a wireless device supporting D2D communication and to corresponding devices and to a computer program for executing the proposed methods.