Techniques for power control in millimeter wave systems

A method for wireless communications at a first device in a wireless communication system, comprising:

• performing an array gain measurement of a wideband channel in a millimeter wave frequency band to determine an array gain variation across a set of subbands of the wideband channel;
• applying, based at least in part on the array gain measurement, a power offset to one or more power control parameters of a set of power control parameters associated with the wideband channel for transmission of a signal using a subband of the set of subbands, the power offset corresponding to the subband and based at least in part on the array gain variation;
• and
• transmitting an indication of the one or more power control parameters to a second device.

An apparatus for wireless communications at a first device in a wireless communication system, comprising:

• means for performing an array gain measurement of a wideband channel in a millimeter wave frequency band to determine an array gain variation across a set of subbands of the wideband channel;
• means for applying, based at least in part on the array gain measurement, a power offset to one or more power control parameters of a set of power control parameters associated with the wideband channel for transmission of a signal using a subband of the set of subbands, the power offset corresponding to the subband and based at least in part on the array gain variation;
• and
• means for transmitting an indication of the one or more power control parameters to a second device.

A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by a processor to:

• perform an array gain measurement of a wideband channel in a millimeter wave frequency band to determine an array gain variation across a set of subbands of the wideband channel;
• apply, based at least in part on the array gain measurement, a power offset to one or more power control parameters of a set of power control parameters associated with the wideband channel for transmission of a signal using a subband of the set of subbands, the power offset corresponding to the subband and based at least in part on the array gain variation;
• and
• transmit an indication of the one or more power control parameters to a second device.