A user equipment (UE) for decoding control information, the UE comprising: a receiver for receiving a Physical Downlink Control Channel (PDCCH) from a base station at subframe k; and a decoder for decoding a set of PDCCH candidates within a search space of the PDCCH at the subframe k, wherein each of the set of PDCCH candidates comprises ‘L’ control channel elements (CCEs), wherein the ‘L’ CCEs corresponding to a specific PDCCH candidate among the set of PDCCH candidates of the search space at the subframe k are contiguously located from a position given by using a variable of Y_k for the subframe k and a modulo ‘C’ operation, wherein ‘C’ is determined as ‘floor(N/L)’, wherein ‘N’ represents a total number of CCEs in the subframe k, and wherein Y_k is defined by:
Y_k=(A*Y_k−1)mod D, wherein A, and D are predetermined constant values. view more

The UE of claim 6, wherein A and D are 39827 and 65537, respectively.

A mobile station for transmitting uplink signals comprising control signals and data signals in a wireless communication system, the mobile station comprising: a processor serially multiplexing first control signals and data signals, wherein the first control signals are placed at a front part of the multiplexed signals and the data signals are placed at a rear part of the multiplexed signals; the processor mapping the multiplexed signals to a 2-dimensional resource matrix comprising a plurality of columns and a plurality of rows, wherein the columns and the rows of the 2-dimensional resource matrix correspond to single carrier frequency divisional multiple access (SC-FDMA) and subcarriers for each SC-FDMA symbol, respectively, wherein a number of columns of the 2-dimensional resource matrix corresponds to a number of SC-FDMA symbols within one subframe except specific SC_FDMA symbols used for a reference signal, and wherein the multiplexed signals are mapped from the first column of the first row to the last column of the first row, the first column of the second row to the last column of the second row, and so on, until all the multiplexed signals are mapped to the 2-dimensional resource matrix; and the processor mapping ACK/NACK control signals to specific columns of the 2-dimensional resource matrix, wherein the specific columns correspond to SC-FDMA symbols right adjacent to the specific SC-FDMA symbols, wherein the ACK/NACK control signals overwrite some of the multiplexed signals mapped to the 2-dimensional resource matrix from the last row of the specific columns. view more

A mobile terminal for use in a mobile communication system, the mobile terminal comprising: a receiver unit for receiving a sub-frame of physical radio resources comprising a control channel signal destined to the mobile terminal, a processing unit for determining based on the received control channel signal a transport format of and a redundancy version for an initial transmission or a retransmission of a protocol data unit conveying user data, and a transmitter unit for transmitting the protocol data unit on at least one physical radio resource using the transport format and the redundancy version of the protocol data unit indicated in the received control channel signal, wherein the control channel signal received within said sub-frame comprises a control information field, in which the transport format and the redundancy version of the protocol data unit are jointly encoded, wherein the processing unit is further configured for the determination of the control information field, which consists of a number of bits representing a range of values that can be represented in the control information field, wherein a first subset of the values is reserved for indicating the transport format of the protocol data unit and a second subset of the values, different from the first subset of the values, is reserved for indicating the redundancy version for transmitting the user data, and wherein the first subset of the values contains more values than the second subset of the values. view more

A method for use in a mobile communication system, the method comprising the following steps performed by a mobile terminal: receiving a sub-frame of physical radio resources comprising a control channel signal destined to the mobile terminal, determining based on the received control channel signal a transport format of and a redundancy version for an initial transmission or a retransmission a protocol data unit conveying user data, and transmitting the protocol data unit on at least one physical radio resource using the transport format and the redundancy version of the protocol data unit indicated in the received control channel signal, wherein the control channel signal received within said sub-frame comprises a control information field, in which the transport format and the redundancy version of the protocol data unit are jointly encoded, wherein the control information field consists of a number of bits representing a range of values that can be represented in the control information field, wherein a first subset of the values is reserved for indicating the transport format of the protocol data unit and a second subset of the values, different from the first subset of the values, is reserved for indicating the redundancy version for transmitting the user data, and wherein the first subset of the values contains more values than the second subset of the values. view more

The method according to claim 14, wherein the transport format is transport block size information of the protocol data unit, and wherein the received control channel signal further comprises a resource allocation field indicating the physical radio resource or resources allocated to the mobile terminal, and said determining depends on the information comprised in the resource allocation field and the control information field. view more

A mobile station apparatus comprising: a receiving unit configured to receive control information; a selecting unit configured to randomly select a sequence from a plurality of sequences contained in one group of a plurality of groups, into which a predetermined number of sequences that are generated from a plurality of base sequences are grouped and which are respectively associated with different amounts of data or reception qualities, wherein the predetermined number of sequences are grouped by partitioning the predetermined number of sequences, in which sequences generated from the same base sequence and having different cyclic shifts are arranged in an increasing order of the cyclic shifts; and a transmitting unit configured to transmit the selected sequence, wherein a position at which the predetermined number of sequences are partitioned is determined based on the control information, and a number of sequences contained in each of the plurality of groups varies in accordance with the control information. view more

A random access method comprising: receiving control information; grouping a predetermined number of sequences that are generated from a plurality of base sequences into a plurality of groups, which are respectively associated with different amounts of data or reception qualities, by partitioning the predetermined number of sequences, in which sequences generated from the same base sequence and having different cyclic shifts are arranged in an increasing order of the cyclic shifts; and randomly selecting a sequence from a plurality of sequences contained in one group of the plurality of groups, wherein a position at which the predetermined number of sequences are partitioned is determined based on the control information, and a number of sequences contained in each of the plurality of groups varies in accordance with the control information. view more

A method, comprising: receiving a processing parameter for transmission of data on two antenna ports, the processing parameter including at least one of a time delay, a phase rotation and a gain determined based on a received uplink signal; receiving a first pilot, a second pilot, a first data symbol and a second data symbol transmitted on the two antenna ports; and demodulating the first data symbol and the second data symbol based on the processing parameter, the first pilot and the second pilot. view more