Configuration of control channels in a mobile communication system

A base station for transmitting control information of multiple control information formats on control channels in a mobile communication system, wherein the base station comprises:

• a coder configured to code the control information of the control channels to thereby generate coded control information bits,
• a modulator configured to modulate the coded control information bits of the control channels, using a given modulation scheme for a control information format, to generate modulated control information, and
• a transmitter configured to transmit the modulated control information of the control channels on physical resource elements,
• wherein, the coder is configured to generate, for each control information format, a number of coded control information bits that is a defined integer multiple of a smallest number of coded information bits for said multiple control information formats that differ in their number of information bits, wherein the defined integer multiple of the smallest number of coded control information bits corresponds to an aggregation of multiple modulation symbols or resource elements, and
• wherein the transmitter is configured to transmit information that configures one or more receiving entities to perform a blind detection on only a subset of the physical resource elements on which the control information can be mapped and/or on only a subset of the multiple control information formats.

A mobile station for receiving control information of multiple control information formats on control channels in a mobile communication system, wherein the mobile station comprises:

• a receiver configured to receive a number of physical resource elements comprising modulated control information of at least one of the control channels,
• a processor configured to perform a blind detection on only a subset of the physical resource elements on which the modulated control information can be mapped and/or on only a subset of the multiple control information formats,
• a demodulator configured to demodulate the modulated control information of the at least one control channel using a given modulation scheme to obtain coded control information bits of the at least one control channel, and
• a decoder configured to decode the coded control information bits of the at least one control channel,
• wherein, the demodulator is configured to obtain a number of coded control information bits that is a defined integer multiple of a smallest number of coded control information bits for said multiple control information formats that differ in their number of information bits, wherein the defined integer multiple of the smallest number of coded control information bits corresponds to an aggregation of multiple modulation symbols or resource elements.