A method, in a user equipment, for determining downlink control information, DCI, sizes for monitoring by the user equipment, UE, in a cell, the method comprising: for a frequency domain resource allocation, FDRA, field in each DCI format, using a field size that is a function of the size of a bandwidth part, BWP, wherein the size of the bandwidth part in the function is determined according to a first rule specifying that (i) the size of the BWP is the size of an active uplink BWP or an initial uplink BWP for a DCI format 0_0 monitored in a UE-specific search space, USS, (ii) the size of the BWP is the size of an initial uplink BWP for a DCI format 0_0 not monitored in a USS, (iii) the size of the BWP is the size of an active downlink BWP or an initial downlink BWP or CORESET 0 for a DCI format 1_0 monitored in a USS, (iv) the size of the BWP is the size of an initial downlink BWP for DCI format 1_0 not monitored in a USS, if CORESET 0 is not configured in the cell, and (v) the size of the BWP is the size of CORESET 0 for DCI format 1_0 not monitored in a USS, if CORESET 0 is configured in the cell; characterized in that the method further comprises: for each DCI format 0_0 and DCI format DCI 1_0 monitored in a common search space, CSS, applying a fourth rule specifying that (i) if the size of the DCI format 0_0 monitored in the CSS is less than the size of a DCI format 1_0 monitored in the CSS, zeroes are added to the DCI format 0_0 monitored in the CSS until the size of the DCI format 0_0 monitored in the CSS is equal to the size of the DCI format 1_0 monitored in the CSS, and (ii) if the size of the DCI format 1_0 monitored in the CSS is less than the size of a DCI format 0_0 monitored in the CSS, most significant bits of the FDRA field in the DCI format 0_0 are truncated until the size of the DCI format 0_0 monitored in the CSS is equal to the size of the DCI format 1_0 monitored in the CSS; and after applying the fourth rule, applying a fifth rule specifying that: for each DCI format 0_0 monitored in a USS, if the size of the DCI format 0_0 monitored in the USS is less than the size of a DCI format 1_0 monitored in the USS, zeroes are added to the DCI format 0_0 monitored in the USS until the size of the DCI format 0_0 monitored in the USS is equal to the size of the DCI format 1_0 monitored in the USS; and for each DCI format 1_0 monitored in a USS, if the size of the DCI format 1_0 monitored in the USS is less than the size of a DCI format 0_0 monitored in the USS, zeroes are added to the DCI format 1_0 monitored in the USS until the size of the DCI format 1_0 monitored in the USS is equal to the size of the DCI format 0_0 monitored in the USS. for each DCI format 0_0 and DCI format DCI 1_0 monitored in a common search space, CSS, applying a fourth rule specifying that (i) if the size of the DCI format 0_0 monitored in the CSS is less than the size of a DCI format 1_0 monitored in the CSS, zeroes are added to the DCI format 0_0 monitored in the CSS until the size of the DCI format 0_0 monitored in the CSS is equal to the size of the DCI format 1_0 monitored in the CSS, and (ii) if the size of the DCI format 1_0 monitored in the CSS is less than the size of a DCI format 0_0 monitored in the CSS, most significant bits of the FDRA field in the DCI format 0_0 are truncated until the size of the DCI format 0_0 monitored in the CSS is equal to the size of the DCI format 1_0 monitored in the CSS; and after applying the fourth rule, applying a fifth rule specifying that: for each DCI format 0_0 monitored in a USS, if the size of the DCI format 0_0 monitored in the USS is less than the size of a DCI format 1_0 monitored in the USS, zeroes are added to the DCI format 0_0 monitored in the USS until the size of the DCI format 0_0 monitored in the USS is equal to the size of the DCI format 1_0 monitored in the USS; and for each DCI format 1_0 monitored in a USS, if the size of the DCI format 1_0 monitored in the USS is less than the size of a DCI format 0_0 monitored in the USS, zeroes are added to the DCI format 1_0 monitored in the USS until the size of the DCI format 1_0 monitored in the USS is equal to the size of the DCI format 0_0 monitored in the USS. for each DCI format 0_0 monitored in a USS, if the size of the DCI format 0_0 monitored in the USS is less than the size of a DCI format 1_0 monitored in the USS, zeroes are added to the DCI format 0_0 monitored in the USS until the size of the DCI format 0_0 monitored in the USS is equal to the size of the DCI format 1_0 monitored in the USS; and for each DCI format 1_0 monitored in a USS, if the size of the DCI format 1_0 monitored in the USS is less than the size of a DCI format 0_0 monitored in the USS, zeroes are added to the DCI format 1_0 monitored in the USS until the size of the DCI format 1_0 monitored in the USS is equal to the size of the DCI format 0_0 monitored in the USS.