A communication apparatus operable to communicate with a terminal station capable of operating in a Doze state and Awake state in an IEEE 802.11 ba, decides, based on a congestion degree in a channel for communicating with the terminal station in the Awake state, a waiting time for waiting for a response to a Wake-up frame for causing the terminal station to transit from the Doze state to the Awake state from when the Wake-up frame is transmitted, transmits the Wake-up frame while the terminal station is in the Doze state, and retransmits the Wake-up frame when the waiting time has elapsed after the Wake-up frame is transmitted without receiving the response from the terminal station.