Uplink Transmission Power based on a Pathloss Reference Identified by a Pathloss Index

A system comprising:

• a base station comprising:
• one or more first processors;
• and
• first memory storing first instructions that, when executed by the one or more first processors, cause the base station to:
• transmit at least one radio resource control message comprising configuration parameters of a cell, the configuration parameters comprising:
• a cell index identifying the cell;
• and
• an index identifying downlink subcarriers as a pathloss reference signal of the cell;
• and
• receive, via uplink subcarriers, at least one uplink signal employing an uplink transmission power;
• and
• a wireless device comprising:
• one or more second processors;
• and
• second memory storing second instructions that, when executed by the one or more second processors, cause the wireless device to:
• receive the at least one radio resource control message;
• and
• determine the uplink transmission power for the at least one uplink signal based on measurements of the downlink subcarriers identified by the index.