Downlink signal reception with antenna panel switching

An apparatus, comprising:

• a processor configured to cause a cellular base station to:
• receive an indication of a delay from a wireless device;
• select a scheduling offset for a transmission to the wireless device large enough for beam switching at the wireless device based at least in part on the delay, wherein the scheduling offset is an offset between a physical downlink control channel (PDCCH) transmission and an aperiodic channel state information reference signal (A-CSI-RS) transmission that is triggered by the PDCCH, wherein:
• when the delay is one of 224 or 336 symbols, the A-CSI-RS is configured for repetitions and a number of beam groups is greater than 1, select the scheduling offset to be at least the delay, and otherwise select the scheduling offset to be a value lower than 224 or 336 symbols;
• transmit the PDCCH triggering the A-CSI-RS transmission at the scheduling offset;
• and
• transmit the A-CSI-RS to the wireless device based on the scheduling offset.

A method, comprising:

• by a base station:
• receiving an indication of a delay from a wireless device;
• selecting a scheduling offset for a transmission to the wireless device large enough for beam switching at the wireless device based at least in part on the delay, wherein the scheduling offset is an offset between a physical downlink control channel (PDCCH) transmission and an aperiodic channel state information reference signal (A-CSI-RS) transmission that is triggered by the PDCCH, wherein:
• when the delay is one of 224 or 336 symbols, the A-CSI-RS is configured for repetitions and a number of beam groups is greater than 1, select the scheduling offset to be at least the delay, and otherwise select the scheduling offset to be a value lower than 224 or 336 symbols;
• transmitting the PDCCH triggering the A-CSI-RS transmission at the scheduling offset;
• and
• transmitting the A-CSI-RS CSI RS based on the scheduling offset.