A mobile station (UE1, 10) for: receiving control information signalled from a radio access network over a physical layer downlink shared control channel, the control information including parameters indicating a modulation and coding scheme used on a data channel corresponding to the control channel; and receiving data packets on the data channel using the control information, wherein the mobile station is configured to: determine, using a mask for the mobile station, whether first received signalling of said control information is for the mobile station, and in the event that the first received signalling of said control information is for the mobile station, receiving a first of said data packets on the data channel using the first received signalling of said control information (50, 52, 54); after receiving the first of said data packets, determine, using the mask for the mobile station, whether second received signalling of said control information is for the mobile station, and in the event that the second received signalling of said control information is not for the mobile station, receiving a second of said data packets on the data channel using the first received signalling of said control information; and after receiving the second of said data packets, determine, using the mask for the mobile station, whether third received signalling of said control information is for the mobile station, and in the event that the third received signalling of said control information is for the mobile station, receiving a third of said data packets on the data channel using the third received signalling of said control information (50, 52, 54), wherein the third received signalling of said control information used for receiving the third of said data packets is different from the first received signalling of said control information used for receiving the first and second of said data packets. receiving control information signalled from a radio access network over a physical layer downlink shared control channel, the control information including parameters indicating a modulation and coding scheme used on a data channel corresponding to the control channel; and receiving data packets on the data channel using the control information, wherein the mobile station is configured to: determine, using a mask for the mobile station, whether first received signalling of said control information is for the mobile station, and in the event that the first received signalling of said control information is for the mobile station, receiving a first of said data packets on the data channel using the first received signalling of said control information (50, 52, 54); after receiving the first of said data packets, determine, using the mask for the mobile station, whether second received signalling of said control information is for the mobile station, and in the event that the second received signalling of said control information is not for the mobile station, receiving a second of said data packets on the data channel using the first received signalling of said control information; and after receiving the second of said data packets, determine, using the mask for the mobile station, whether third received signalling of said control information is for the mobile station, and in the event that the third received signalling of said control information is for the mobile station, receiving a third of said data packets on the data channel using the third received signalling of said control information (50, 52, 54), determine, using a mask for the mobile station, whether first received signalling of said control information is for the mobile station, and in the event that the first received signalling of said control information is for the mobile station, receiving a first of said data packets on the data channel using the first received signalling of said control information (50, 52, 54); after receiving the first of said data packets, determine, using the mask for the mobile station, whether second received signalling of said control information is for the mobile station, and in the event that the second received signalling of said control information is not for the mobile station, receiving a second of said data packets on the data channel using the first received signalling of said control information; and after receiving the second of said data packets, determine, using the mask for the mobile station, whether third received signalling of said control information is for the mobile station, and in the event that the third received signalling of said control information is for the mobile station, receiving a third of said data packets on the data channel using the third received signalling of said control information (50, 52, 54), wherein the third received signalling of said control information used for receiving the third of said data packets is different from the first received signalling of said control information used for receiving the first and second of said data packets.