FIELD: wireless communication.
SUBSTANCE: control unit in a terminal uses channel quality as a base for selection of either the first method for transmission of a random access signal including a preamble section and a data section or the second method for transmission of a random access signal, which includes a preamble section and does not include a data section. A transmission unit transmits the random access signal based on the selected method.
EFFECT: improvement of the efficiency of processing of random access.
28 cl, 12 dwg
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