A method, terminal device, network element, and computer program product for signalling a scheduling information used for indicating resource allocation states of a plurality of available resource blocks to a plurality of scheduled devices are disclosed, wherein a resource allocation state is set for each of the available resource blocks and multiplied by the number of possible allocation states to the power of a sequential number of the resource block. Then, the multiplication results of all available resource blocks are summed and the summing result is transmitted to the plurality of scheduled devices. Thereby, the required amount of signalling bits can be reduced considerably, while still maintaining the same signalling content.