Power headroom reporting with dual connectivity

A method to be performed by an evolved Node B (“eNB”), the method comprising:

• receiving a first power headroom (“PHR”) value associated with communication between the eNB and a user equipment (“UE”);
• receiving a second PHR value associated with communication between another eNB and the UE;
• determining an uplink transmission power associated with the communication between the eNB and the UE based on the first PHR value and the second PHR value;
• and
• transmitting an indication of the uplink transmission power to the UE.

An apparatus to be included in a user equipment (“UE”), the apparatus comprising:

• transmitter circuitry;
• and
• processor circuitry coupled to the transmitter circuitry, the processor circuitry to simultaneously operate on a first wireless cell, provided by a first eNB, and a second wireless cell, provided by a second eNB, and to compute a first estimate of a power headroom (“PHR”) associated with the first wireless cell and a second estimate of a PHR associated with the second wireless cell;
• the processor circuitry to identify an uplink transmission power based on the first estimate and the second estimate in response to transmission of the first estimate and the second estimate;
• the processor circuitry to cause the transmitter circuitry to transmit an uplink communication based on said uplink transmission power in response to receipt of an indication of said uplink transmission power.