Base station, mobile station and method

A base station apparatus, wherein a plurality of types of bandwidths are defined for use in a communication system, the base station apparatus comprising:

• a transmission unit configured to transmit transmission data by using a bandwidth of the plurality of types of bandwidths in a band centered on a predetermined center frequency;
• and
• a multiplexing unit configured to multiplex a synchronization channel into a center band of a predetermined width including the center frequency of the band used in the transmission unit irrespective of the bandwidth used in the transmission unit.

A base station apparatus, wherein a plurality of types of bandwidths are defined for use in a communication system, the base station apparatus comprising:

• a transmission unit configured to transmit transmission data by using a bandwidth of the plurality of types of bandwidths in a band centered on a predetermined center frequency;
• and
• a multiplexing unit configured to multiplex a control channel into a center band of a predetermined width including the center frequency of the band used in the transmission unit irrespective of the bandwidth used in the transmission unit.

A transmission method, wherein a plurality of types of bandwidths are defined for use in a communication system, the transmission method comprising the steps of:

• transmitting downlink transmission data by using a bandwidth of the plurality of types of bandwidths in a band centered on a predetermined center frequency;
• and
• multiplexing a synchronization channel into a center band of a predetermined width including the center frequency of the band irrespective of the bandwidth to be used.

A transmission method, wherein a plurality of types of bandwidths are defined for use in a communication system, the transmission method comprising the steps of:

• transmitting downlink transmission data by using a bandwidth of the plurality of types of bandwidths in a band centered on a predetermined center frequency;
• and
• multiplexing a control channel into a center band of a predetermined width including the center frequency of the band irrespective of the bandwidth to be used.

A communication system, wherein a plurality of types of bandwidths are defined for use in the communication system, the communication system comprising:

• a base station configured to transmit transmission data by using a bandwidth of the plurality of types of bandwidths in a band centered on a predetermined center frequency, and to multiplex a synchronization channel into a center band of a predetermined width including the center frequency of the band irrespective of the bandwidth to be used;
• and
• a mobile station configured to receive the synchronization channel from the base station to be synchronized with the base station, and to receive the transmission data from the base station.

A base station apparatus, wherein a plurality of types of bandwidths are defined for use in a communication system, the base station apparatus comprising:

• a transmission unit configured to transmit transmission data by using a bandwidth of the plurality of types of bandwidths;
• and
• a multiplexing unit configured to multiplex a synchronization channel into a center band of a predetermined width including a center frequency of a band used in the transmission unit irrespective of the bandwidth used in the transmission unit.

A base station apparatus, wherein a plurality of types of bandwidths are defined for use in a communication system, the base station apparatus comprising:

• a transmission unit configured to transmit transmission data by using a bandwidth of the plurality of types of bandwidths;
• and
• a multiplexing unit configured to multiplex a control channel into a center band of a predetermined width including a center frequency of a band used in the transmission unit irrespective of the bandwidth used in the transmission unit.