A method for operating a first device-to-device (D2D) device in a cellular communications system includes receiving geo-location information from a first entity in the cellular communications system, the geo-location information including location information for cellular users of the cellular communications system and resources of the cellular communications system available to the cellular users, selecting one of the resources to avoid causing interference to a cellular transmission, the resource being selected in accordance with the geo-location information, and transmitting to a second D2D device over the selected resource.