FIELD: radio communication.
SUBSTANCE: invention relates to sequence controls for a demodulation reference signal. A sequence for the demodulation reference signal based on the symbol index and the slot index is generated. A demodulation reference signal is transmitted, and if group hopping is activated, the sequence group number for the demodulation reference signal is determined based on the symbol index and slot index.
EFFECT: providing the proper configuration of the sequence to be applied to the demodulation reference signal and/or the PUCCH channel in future radio communication systems.
4 cl, 17 dwg
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