Beam sweeping to improve the range of wireless power transfer

A network entity, comprising:

• at least one processor;
• and
• at least one memory coupled with the at least one processor, the at least one memory storing instructions executable by the at least one processor to cause the network entity to:
• transmit an indication of a set of time resources associated with a beam sweeping transmission and one or more frequency shifts associated with backscattering the beam sweeping transmission by one or more energy harvesting user equipments (UEs), wherein each of the one or more frequency shifts corresponds to a power level of a plurality of power levels associated with the beam sweeping transmission;
• obtain a beam sweeping sequence including a plurality of beamforming parameters corresponding to a plurality of beams associated with wireless power transmission to the one or more energy harvesting UEs;
• and
• transmit a plurality of beamformed power signals, wherein transmitting the plurality of beamformed power signals comprises cycling through the plurality of beams in accordance with the beam sweeping sequence.

A method for wireless communication at a user equipment (UE), comprising:

• receiving, from a network entity, an indication of a set of time resources associated with a beam sweeping transmission by the network entity and one or more frequency shifts associated with backscattering the beam sweeping transmission, wherein each of the one or more frequency shifts corresponds to a power level of a plurality of power levels associated with receiving the beam sweeping transmission;
• transmitting a backscattered signal based at least in part on the beam sweeping transmission and the one or more frequency shifts;
• receiving, from the network entity, a beamformed power signal in accordance with transmitting the backscattered signal;
• and
• storing energy for powering the UE based at least in part on the beamformed power signal.

A method for wireless communication at a network entity, comprising:

• transmitting an indication of a set of time resources associated with a beam sweeping transmission and one or more frequency shifts associated with backscattering the beam sweeping transmission by one or more energy harvesting user equipments (UEs), wherein each of the one or more frequency shifts corresponds to a power level of a plurality of power levels associated with the beam sweeping transmission;
• obtaining a beam sweeping sequence including a plurality of beamforming parameters corresponding to a plurality of beams associated with wireless power transmission to the one or more energy harvesting UEs;
• and
• transmitting a plurality of beamformed power signals, wherein transmitting the plurality of beamformed power signals comprises cycling through the plurality of beams in accordance with the beam sweeping sequence.