Mobile station, base station and communications method

A mobile station comprising:

• a mapping portion that maps an uplink shared data channel to which an uplink shared control channel and a pilot channel pertain, on a resource block assigned by a base station,
• wherein plural resource blocks are arranged on a frequency axis and plural resource blocks are time-divisionally multiplexed on a time axis in an uplink;
• and
• a transmitting portion that transmits the uplink shared data channel mapped in the mapping portion,
• wherein the mapping portion arranges the uplink shared control channel before and after the pilot channel in the uplink shared data channel to which the uplink shared control channel and the pilot channel pertain, and
• wherein the mapping portion maps on a resource block an uplink shared control channel to which no uplink shared data channel pertains, in a sub-frame on which an uplink shared data channel is not mapped,
• wherein the transmission portion transmits the uplink shared control channel mapped in the mapping portion,
• wherein a modulation method of the uplink shared data channel mapped in the mapping portion is variable, and
• wherein a modulation method of the uplink shared control channel mapped in the mapping portion is variable within a range less than or equal to a transmission rate of the uplink shared data channel.

A transmission method comprising steps of:

• mapping an uplink shared data channel to which an uplink shared control channel and a pilot channel pertain, on a resource block assigned by a base station,
• wherein plural resource blocks are arranged on a frequency axis and plural resource blocks are time-divisionally multiplexed on a time axis in an uplink;
• and
• transmitting the mapped uplink shared data channel,
• wherein the uplink shared control channel is arranged right before and right after the pilot channel in the uplink shared data channel to which the uplink shared control channel and the pilot channel pertain, in the mapping step.

A communication system comprising:

• a mobile station that transmits an uplink shared data channel;
• and
• a base station that receives the uplink shared data channel from the mobile station,
• wherein the mobile station comprises:
• a mapping portion that maps an uplink shared data channel to which an uplink shared control channel and a pilot channel pertain, on a resource block assigned by a base station,
• wherein plural resource blocks are arranged on a frequency axis and plural resource blocks are time-divisionally multiplexed on a time axis in an uplink;
• and
• a transmitting portion that transmits the uplink shared data channel mapped in the mapping portion,
• wherein the mapping portion arranges the uplink shared control channel right before and right after the pilot channel in the uplink shared data channel to which the uplink shared control channel and the pilot channel pertain.

A base station comprising:

• a receiving portion that receives an uplink shared data channel, mapped on a resource block assigned to a mobile station, to which an uplink shared control channel and a pilot channel pertain,
• wherein plural resource blocks are arranged on a frequency axis and plural resource blocks are time-divisionally multiplexed on a time axis in an uplink;
• and
• a processing portion that processes the uplink shared data channel received in the receiving portion,
• wherein the uplink shared control channel is arranged right before and right after the pilot channel in the uplink shared data channel, received in the receiving portion, to which the uplink shared control channel and the pilot channel pertain.

A receiving method in a base station, comprising steps of:

• receiving an uplink shared data channel, mapped on a resource block assigned to a mobile station, to which an uplink shared control channel and a pilot channel pertain,
• wherein plural resource blocks are arranged on a frequency axis and plural resource blocks are time-divisionally multiplexed on a time axis in an uplink;
• and
• processing the received uplink shared data channel,
• wherein the uplink shared control channel is arranged right before and right after the pilot channel in the uplink shared data channel, received in the receiving step, to which the uplink shared control channel and the pilot channel pertain.