Transmission Power of Random-Access Preamble

A base station comprising:

• one or more processors;
• and
• memory storing instructions that, when executed by the one or more processors, cause the base station to:
• transmit a physical downlink control channel (PDCCH) order triggering a random-access procedure, the PDCCH order comprising a field indicating a reference signal, wherein:
• a first value of the field indicates that the reference signal is a downlink reference signal that is quasi-collocated with a demodulation reference signal (DM-RS) of the PDCCH order;
• and
• a second value of the field indicates that the reference signal is a synchronization signal block;
• receive, for the random-access procedure, a random-access preamble.

A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to:

• receive a physical downlink control channel (PDCCH) order triggering a random-access procedure, the PDCCH order comprising a field indicating a reference signal, wherein:
• a first value of the field indicates that the reference signal is a downlink reference signal that is quasi-collocated with a demodulation reference signal (DM-RS) of the PDCCH order;
• and
• a second value of the field indicates that the reference signal is a synchronization signal block;
• transmit, for the random-access procedure, a random-access preamble using a transmission power, wherein the transmission power of the random-access preamble is based on the reference signal indicated by the field.