Frequency hopping and fixed frequency selection for ambient internet of things (IoT) devices

A method for wireless communications by a device of a first wireless system, comprising:

• determining to configure an energy harvesting device for frequency hopping based on detected signals of one or more other wireless systems;
• transmitting a wake-up signal, the wake-up signal including an indication for frequency hopping;
• receiving a first response from the energy-harvesting device on a first frequency channel;
• and
• receiving a second response from the energy harvesting device on a second frequency channel based on a frequency hopping pattern.

A non-transitory computer-readable medium having stored thereon instructions that, when executed by at least one processor, cause the at least one processor to:

• determine to configure an energy harvesting device for frequency hopping based on detected signals of one or more other wireless systems;
• transmit a wake-up signal, the wake-up signal including an indication for frequency hopping;
• receive a first response from the energy harvesting device on a first frequency channel;
• and
• receive a second response from the energy harvesting device on a second frequency channel based on a frequency hopping pattern.