FIELD: information technologies.
SUBSTANCE: if a competition release timer (CR) expires as competition is released in process of arbitrary access procedure, or if a signal of a physical downlink control channel (PDCCH) or a signal of a physical downlink shared channel (PDSCH), associated with the PDCCH channel, does not comply with a terminal identifier, a buffer of hybrid automatic repeat request (HARQ) is cleaned to store a package data unit of medium access control (MAC PDU), sent in the arbitrary access procedure, so that nonmandatory repeated data transfer could be prevented.
EFFECT: prevention of nonmandatory repeated data transfer.
15 cl, 11 dwg
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