FIELD: wireless communication.
SUBSTANCE: group of inventions relates to wireless communication systems. The wireless transmission/reception module (WTRU) can accept the indication of the semi-static information of the upstream communication line / downstream communication line (UL/DL). WTRU can assess on the basis of configuration information whether there are RACH resource areas and determine whether any RACH resource areas are valid, with the RACH resource area being allowed based on the RACH resource area assessment after all actual SS blocks transferred are specified and/or whether the SS block redefinition is disabled or enabled. WTRU can transfer RACH to one or more of the RACH resource areas that have been identified as valid.
EFFECT: technical result consists in eliminating collisions between possible areas of the resources of the random access channel (RACH).
8 cl, 16 dwg
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