A wireless transmit/receive unit, WTRU, that comprises: a processor, configured to: determine that the WTRU is to perform a first transmission using a first transmission beam and a second transmission using a second transmission beam; determine an uplink transmission power for any one or more of the first transmission and the second transmission, wherein: on condition that a first angular separation of the first transmission beam and the second transmission beam is greater than a first threshold, determine the uplink transmission power based on a first maximum power level parameter configured for the first transmission associated with the first transmission beam and a second maximum power level parameter configured for the second transmission associated with the second transmission beam, and on condition that a second angular separation of the first transmission beam and second transmission beam is less than a second threshold, determine the uplink transmission power based on a shared maximum power level parameter configured for the first transmission associated with the first transmission beam and the second transmission associated with the second transmission beam; and a transmitter configured to transmit the first transmission using the first transmission beam and the second transmission using the second transmission beam. a processor, configured to: determine that the WTRU is to perform a first transmission using a first transmission beam and a second transmission using a second transmission beam; determine an uplink transmission power for any one or more of the first transmission and the second transmission, wherein: on condition that a first angular separation of the first transmission beam and the second transmission beam is greater than a first threshold, determine the uplink transmission power based on a first maximum power level parameter configured for the first transmission associated with the first transmission beam and a second maximum power level parameter configured for the second transmission associated with the second transmission beam, and on condition that a second angular separation of the first transmission beam and second transmission beam is less than a second threshold, determine the uplink transmission power based on a shared maximum power level parameter configured for the first transmission associated with the first transmission beam and the second transmission associated with the second transmission beam; and determine that the WTRU is to perform a first transmission using a first transmission beam and a second transmission using a second transmission beam; determine an uplink transmission power for any one or more of the first transmission and the second transmission, wherein: on condition that a first angular separation of the first transmission beam and the second transmission beam is greater than a first threshold, determine the uplink transmission power based on a first maximum power level parameter configured for the first transmission associated with the first transmission beam and a second maximum power level parameter configured for the second transmission associated with the second transmission beam, and on condition that a second angular separation of the first transmission beam and second transmission beam is less than a second threshold, determine the uplink transmission power based on a shared maximum power level parameter configured for the first transmission associated with the first transmission beam and the second transmission associated with the second transmission beam; and on condition that a first angular separation of the first transmission beam and the second transmission beam is greater than a first threshold, determine the uplink transmission power based on a first maximum power level parameter configured for the first transmission associated with the first transmission beam and a second maximum power level parameter configured for the second transmission associated with the second transmission beam, and on condition that a second angular separation of the first transmission beam and second transmission beam is less than a second threshold, determine the uplink transmission power based on a shared maximum power level parameter configured for the first transmission associated with the first transmission beam and the second transmission associated with the second transmission beam; and a transmitter configured to transmit the first transmission using the first transmission beam and the second transmission using the second transmission beam.