Techniques for tone reservation in orthogonal time-frequency space waveform communications

An apparatus for wireless communication at a transmitting device, comprising:

• one or more processors;
• one or more memories coupled with the one or more processors;
• and
• instructions stored in the memory and executable by the one or more processors to cause the apparatus to:
• generate an orthogonal time-frequency space (OTFS) tone reservation signal for transmission via a first subset of resources of a plurality of resources of an OTFS frame, the plurality of resources spanning a delay-Doppler resource grid associated with the OTFS frame for communications between the transmitting device and a receiving device;
• generate an information signal for transmission via a second subset of resources of the plurality of resources for the OTFS frame, the information signal including information bits modulated according to an OTFS waveform;
• and
• transmit, to the receiving device, the OTFS tone reservation signal via the first subset of resources and the information signal via the second subset of resources.

An apparatus for wireless communication at a receiving device, comprising:

• one or more processors;
• one or more memories coupled with the one or more processors;
• and
• instructions stored in the memory and executable by the one or more processors to cause the apparatus to:
• receive, from a transmitting device, an orthogonal time-frequency space (OTFS) frame via a set of resources that span a delay-Doppler resource grid associated with the OTFS frame, wherein a first subset of the set of resources provide an OTFS tone reservation signal and a second subset of resources of the set of resources provide an information signal including information bits modulated according to an OTFS waveform;
• and
• decode the information signal from the second subset of resources based at least in part on the second subset of resources and the OTFS waveform.