A terminal station comprising: a broadcast channel reception processing module adapted to obtain allocation sequence information from a signal received from a base station in its cell, wherein the allocation sequence information indicates an allocation of a number of usable sequences with consecutive index numbers in an arrangement of a plurality of sequences, the arrangement associating a plurality of consecutive index numbers with the plurality of sequences, the plurality of sequences being comprised of Zadoff-Chu sequences or the plurality of sequences being comprised of Generalized Chirp-Like sequences; for each sequence of the plurality of sequences, there is a difference between a position of a correlation value peak that occurs at a wrong timing and a position of a correlation value peak that occurs at a correct timing; the plurality of sequences is arranged in the arrangement by assigning the index numbers based on these differences such that in a middle of the arrangement there are one or more sequences having differences of a specific value; and the arrangement is such that a plurality of sequences on one side from the middle of the arrangement have differences whose deviations from the specific value increase with decreasing index numbers and a plurality of sequences on the other side from the middle of the arrangement have differences whose deviations from the specific value increase with increasing index numbers, the terminal station further comprising: a preamble sequence selection module adapted to select a usable sequence for transmitting a random access burst preamble based on the obtained allocation sequence information. a broadcast channel reception processing module adapted to obtain allocation sequence information from a signal received from a base station in its cell, wherein the allocation sequence information indicates an allocation of a number of usable sequences with consecutive index numbers in an arrangement of a plurality of sequences, the arrangement associating a plurality of consecutive index numbers with the plurality of sequences, the plurality of sequences being comprised of Zadoff-Chu sequences or the plurality of sequences being comprised of Generalized Chirp-Like sequences; for each sequence of the plurality of sequences, there is a difference between a position of a correlation value peak that occurs at a wrong timing and a position of a correlation value peak that occurs at a correct timing; the plurality of sequences is arranged in the arrangement by assigning the index numbers based on these differences such that in a middle of the arrangement there are one or more sequences having differences of a specific value; and the arrangement is such that a plurality of sequences on one side from the middle of the arrangement have differences whose deviations from the specific value increase with decreasing index numbers and a plurality of sequences on the other side from the middle of the arrangement have differences whose deviations from the specific value increase with increasing index numbers, the terminal station further comprising: a preamble sequence selection module adapted to select a usable sequence for transmitting a random access burst preamble based on the obtained allocation sequence information. a preamble sequence selection module adapted to select a usable sequence for transmitting a random access burst preamble based on the obtained allocation sequence information.