Method and arrangement in a telecommunication system

<?claim ?>Network node (10) for a telecommunications system in which the allocations of resources are transmitted to user devices using a plurality of physical downlink control channels, PDCCH: s, the PDCCH: s are comprised in a control region of each downlink subframe, wherein the network node is arranged to to allocate communications resources by: Dividing (36) to decode the PDCCH: s into at least one common subset of the PDCCH: s and a plurality of group subsets of the PDCCH: s, which each user device is made possible, the common subset of the PDCCH: s and only one group subset of the PDCCH: s, wherein a respective group subset of the PDCCH: s, the by a user equipment to decode, is determined by modulo counting of a RNTI Radio Network Temporary Identifier, the user device.