FIELD: physics, communication.
SUBSTANCE: invention relates to the field of communication. UE in accordance with this invention includes a module 12 of RACH operation, made as capable of making attempts to detect a PD response to a PD preamble only on a descending carrier entering multiple descending carriers, corresponding to the ascending carrier, when the mobile station uses combination of carriers and has sent the PD preamble on the ascending carrier.
EFFECT: technical result consists in limitation of quantity of descending carriers, on which the mobile station of UE detects a PDCCH channel.
8 cl, 11 dwg
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