A wireless communication system comprising a plurality of radio devices (102, 104) and one or more sink devices, each radio device (102, 104) belongs to one or more radio neighborhoods and is capable of repeating a transmission of a broadcast message regardless of whether the radio device is operating as a router device or as a non-router device, wherein radio devices (102, 104) belonging to each radio neighborhood are configured to repeat collectively a transmission of a broadcast message a collective target amount of repetitions within each radio neighborhood, wherein each radio device (102, 104), operating as a router device or as a non-router device, within each radio neighborhood to which it belongs is arranged to: define a total repetition load value representing a contribution of said radio device (102, 104) to the collective target amount of repetitions of the broadcast message within said each radio neighborhood to which it belongs, and decide whether to repeat the transmission of the broadcast message in accordance with the defined total repetition load value, wherein each radio device (102, 104) is associated with at least one parent device being a router device, characterized in that the total repetition load value is defined based on an own repetition load value of the radio device (102, 104) and a parent repetition load value of the radio device (102, 104) defined for each of the associated at least one parent device of the radio device (102, 104), wherein the own repetition load value of the router device depends on the number of router devices within the radio neighborhood and the number of member devices of said router device, wherein the parent repetition load value of the radio device (102, 104) depends on the number of router devices within the radio neighborhood and the number of member devices of the associated parent device of said radio device (102, 104), and wherein the member devices comprise one or more router member devices and/or one or more non-router member devices. define a total repetition load value representing a contribution of said radio device (102, 104) to the collective target amount of repetitions of the broadcast message within said each radio neighborhood to which it belongs, and decide whether to repeat the transmission of the broadcast message in accordance with the defined total repetition load value, wherein each radio device (102, 104) is associated with at least one parent device being a router device, characterized in that the total repetition load value is defined based on an own repetition load value of the radio device (102, 104) and a parent repetition load value of the radio device (102, 104) defined for each of the associated at least one parent device of the radio device (102, 104), wherein the own repetition load value of the router device depends on the number of router devices within the radio neighborhood and the number of member devices of said router device, wherein the parent repetition load value of the radio device (102, 104) depends on the number of router devices within the radio neighborhood and the number of member devices of the associated parent device of said radio device (102, 104), and wherein the member devices comprise one or more router member devices and/or one or more non-router member devices.