A method in a first wireless device of a wireless communications network, comprising: obtaining a power headroom report, PHR, configuration including one or more PHR configuration parameters for an enhanced PHR based at least in part on one or more device-to-device, D2D, transmissions of the first wireless device; estimating a power headroom, PH, according to the obtained PHR configuration, the estimated PH based at least in part on the one or more D2D transmissions of the first wireless device; and transmitting the enhanced PHR to a node (110, 115) of the wireless communications network, the enhanced PHR comprising the PH estimated according to the obtained PHR configuration; characterized by the enhanced PHR transmitted to the node of the wireless communications network comprises one of: a D2D PHR comprising a function of: a D2D transmission configuration parameter of the first wireless device; and a parameter characterizing the distance and/or radio propagation environment between the first wireless device and the node of the wireless communications network; and a hybrid PHR comprising a function of one or more cellular parameters and one or more D2D parameters, the one or more D2D parameters comprising: a D2D transmission configuration parameter of the first wireless device; and a parameter characterizing the distance and/or radio propagation environment between the first wireless device and the node of the wireless communications network; wherein the D2D transmission configuration parameter comprises one or more of: D2D transmission resources, D2D transmission type, D2D transmission pattern, D2D transmission periodicity, D2D resource allocation type, synchronization reference for D2D transmission, and time alignment characteristic characterizing a D2D transmit timing relative to other wireless device transmissions or receptions. obtaining a power headroom report, PHR, configuration including one or more PHR configuration parameters for an enhanced PHR based at least in part on one or more device-to-device, D2D, transmissions of the first wireless device; estimating a power headroom, PH, according to the obtained PHR configuration, the estimated PH based at least in part on the one or more D2D transmissions of the first wireless device; and transmitting the enhanced PHR to a node (110, 115) of the wireless communications network, the enhanced PHR comprising the PH estimated according to the obtained PHR configuration; characterized by the enhanced PHR transmitted to the node of the wireless communications network comprises one of: a D2D PHR comprising a function of: a D2D transmission configuration parameter of the first wireless device; and a parameter characterizing the distance and/or radio propagation environment between the first wireless device and the node of the wireless communications network; and a hybrid PHR comprising a function of one or more cellular parameters and one or more D2D parameters, the one or more D2D parameters comprising: a D2D transmission configuration parameter of the first wireless device; and a parameter characterizing the distance and/or radio propagation environment between the first wireless device and the node of the wireless communications network; wherein the D2D transmission configuration parameter comprises one or more of: D2D transmission resources, D2D transmission type, D2D transmission pattern, D2D transmission periodicity, D2D resource allocation type, synchronization reference for D2D transmission, and time alignment characteristic characterizing a D2D transmit timing relative to other wireless device transmissions or receptions. a D2D PHR comprising a function of: a D2D transmission configuration parameter of the first wireless device; and a parameter characterizing the distance and/or radio propagation environment between the first wireless device and the node of the wireless communications network; and a D2D transmission configuration parameter of the first wireless device; and a parameter characterizing the distance and/or radio propagation environment between the first wireless device and the node of the wireless communications network; and a hybrid PHR comprising a function of one or more cellular parameters and one or more D2D parameters, the one or more D2D parameters comprising: a D2D transmission configuration parameter of the first wireless device; and a parameter characterizing the distance and/or radio propagation environment between the first wireless device and the node of the wireless communications network; a D2D transmission configuration parameter of the first wireless device; and a parameter characterizing the distance and/or radio propagation environment between the first wireless device and the node of the wireless communications network; wherein the D2D transmission configuration parameter comprises one or more of: D2D transmission resources, D2D transmission type, D2D transmission pattern, D2D transmission periodicity, D2D resource allocation type, synchronization reference for D2D transmission, and time alignment characteristic characterizing a D2D transmit timing relative to other wireless device transmissions or receptions.