A method for reducing the number of decodes to be tested in a blind decode processing in a receiver circuitry, which is adapted to receive from a wireless network system enhanced Physical Downlink Control Channel (ePDCCH) demodulation reference signals, DMRS, and encoded control channel messages mapped to a plurality of physical resource blocks, PRBs, the receiver circuitry being configured to evaluate a plurality of control channel message candidates, each control channel message candidate being associated with one control channel DMRS candidate of a set of control channel DMRS candidates, a control channel DMRS candidate comprising a plurality of PRB indicators and one control channel DMRS sequence identifier, wherein the method comprises: - receiving a signal from the wireless network system (S110); - calculating a DMRS sequence based on the control channel DMRS sequence identifier of a first control channel DMRS candidate (S120); - extracting a signal sequence from the received signal using the plurality of PRB indicators of the first control channel DMRS candidate (S130); - computing one first quality measure for the first control channel DMRS candidate based on the extracted signal sequence and the calculated DMRS sequence (S140), and wherein the method further comprises: - calculating a DMRS sequence based on the control channel DMRS sequence identifier of a second control channel DMRS candidate (S122); - extracting a signal sequence from the received signal using the plurality of PRB indicators of the second control channel DMRS candidate (S132); - computing one second quality measure for the second control channel DMRS candidate based on the extracted signal sequence and the calculated DMRS sequence (S142); - controlling a decoding of the plurality of control channel message candidates by selecting based on said first quality measure and the second quality measure at least one control channel message candidate for decoding of a received control channel message (S152), characterized in that each of the first and second quality measure is a function of interpolated channel estimates and residuals, wherein the function is a ratio between a power of the interpolated channel estimates and a power of the residuals, wherein the residuals are produced as a difference between raw channel estimates and the interpolated channel estimates, wherein interpolated channel estimates are produced using interpolation between two or more raw channel estimates, and wherein the raw channel estimates are computed by de-rotating received reference signal data with assumed transmitted pilot data. - receiving a signal from the wireless network system (S110); - calculating a DMRS sequence based on the control channel DMRS sequence identifier of a first control channel DMRS candidate (S120); - extracting a signal sequence from the received signal using the plurality of PRB indicators of the first control channel DMRS candidate (S130); - computing one first quality measure for the first control channel DMRS candidate based on the extracted signal sequence and the calculated DMRS sequence (S140), - calculating a DMRS sequence based on the control channel DMRS sequence identifier of a second control channel DMRS candidate (S122); - extracting a signal sequence from the received signal using the plurality of PRB indicators of the second control channel DMRS candidate (S132); - computing one second quality measure for the second control channel DMRS candidate based on the extracted signal sequence and the calculated DMRS sequence (S142); - controlling a decoding of the plurality of control channel message candidates by selecting based on said first quality measure and the second quality measure at least one control channel message candidate for decoding of a received control channel message (S152), <EOS>