Power headroom triggering and reporting for uplink polarization-based operation

A wireless transmit/receive unit (WTRU) comprising a processor:

• the processor configured to:
• send a power capability of the WTRU, wherein the power capability is associated with one or more antenna ports or antenna port groups;
• determine that a condition is satisfied, wherein the condition comprises one or more of the power capability changing or a serving panel of the WTRU changing;
• and
• send a power headroom report (PHR) based the condition being satisfied, wherein the PHR indicates a maximum power associated with a first polarization type and a maximum power associated with a second polarization type.

A method for a wireless transmit/receive unit (WTRU), the method comprising:

• sending a power capability of the WTRU, wherein the power capability is associated with one or more antenna ports or antenna port groups;
• determining that a condition is satisfied, wherein the condition comprises one or more of the power capability changing or a serving panel of the WTRU changing;
• and
• sending a power headroom report (PHR) based the condition being satisfied, wherein the PHR indicates a maximum power associated with a first polarization type and a maximum power associated with a second polarization type.