Efficient retransmissions for wakeup radios

An apparatus for wireless communication, comprising:

• a memory that stores instructions;
• and
• a processor coupled with the memory, wherein the processor and the memory are configured to:
• transmit a first wakeup transmission to wakeup radios of a group of stations;
• determine to retransmit the first wakeup transmission to the group of stations;
• and
• transmit a second wakeup transmission to the wakeup radios of the group of stations, the second wakeup transmission including an indication that the second wakeup transmission is a retransmission of the first wakeup transmission.

An apparatus for wireless communication, comprising:

• a memory that stores instructions;
• and
• a processor coupled with the memory, wherein the processor and the memory are configured to:
• transmit a first wakeup transmission to wakeup radios of a group of stations, the first wakeup transmission addressed to the group of stations, and the first wakeup transmission indicating to each station of the group of stations to power on a second radio to communicate with the apparatus;
• identify that one or more stations of the group of stations failed to receive the first wakeup transmission;
• and
• transmit a second wakeup transmission to the identified one or more stations, the second wakeup transmission addressed individually to the one or more stations.