BASE STATION, TERMINAL APPARATUS, AND INITIAL CONNECTION METHOD

摘要

In order to shorten the time in which an initial connection is established when switching directivity and then performing the initial connection, a frame timing control unit (101) sets, until detection of an RACH signal, a transmission timing of a transmission frame for transmitting a search signal and a broadcast signal and also sets a reception start timing for starting the reception of the corresponding RACH signal. A search/broadcast signal generation unit (102) generates the broadcast signal and the search signal including reception timing information. A beam directivity control unit (106) sets, for a predetermined time starting from the reception start timing, a directivity pattern such that the directivity is in the same direction as the directivity pattern for the corresponding transmission timing information, whereby the beam directivity control unit (106) controls a beam directivity operation unit (107).