Method for allocating preamble sequence subblock for supporting irregular system bandwidth in wireless communication system and an apparatus therefor

A base station comprising:

• a processor allocating a plurality of sequence subblocks corresponding to a regular system bandwidth and configuring a secondary advanced-preamble (SA-preamble) by dropping one or more sequence subblock pairs among the plurality of sequence subblocks symmetrically in base of a DC component;
• and
• a transmitting module transmitting the SA-preamble to a mobile station,
• wherein a bandwidth of the SA-preamble is same as or narrower than an irregular system bandwidth.

A mobile station comprising:

• a receiving module receiving a primary advanced-preamble (PA-preamble) indicating an irregular system bandwidth from a base station and receiving a secondary advanced-preamble (SA-preamble) corresponding to the irregular system bandwidth;
• and
• a processor determining a cell identifier of the base station by using the SA-preamble,
• wherein a bandwidth of the SA-preamble is same as or narrower than the irregular system bandwidth.

A method for receiving a secondary advanced-preamble (SA-preamble) in a mobile station of a wireless communication system, the SA-preamble supporting an irregular system bandwidth, the method comprising:

• receiving a primary advanced-preamble (PA-preamble) indicating the irregular system bandwidth from a base station;
• and
• receiving a secondary advanced-preamble (SA-preamble) corresponding to the irregular system bandwidth,
• wherein a bandwidth of the SA-preamble is same as or narrower than the irregular system bandwidth.