Techniques for reservation preamble for low latency detection in a new radio shared spectrum communication system

An apparatus for wireless communications, comprising:

• means for generating a first reservation preamble of a first operator based on at least one of a compressed representation in a signal space, a basis function of the signal space, or a constant amplitude zero autocorrelation waveform (CAZAC) sequences, wherein a time duration of the first reservation preamble includes a plurality of waveform samples of a multi-tone transmission and a switching gap without one or more active transmissions;
• and
• means for transmitting, on a first timeslot of multiple time slots of a downlink channel, the first reservation preamble of the first operator to at least a user equipment (UE).

A non-transitory computer-readable medium storing computer executable code for wireless communications, comprising code for:

• generating a first reservation preamble of a first operator based on at least one of a compressed representation in a signal space, a basis function of the signal space, or a constant amplitude zero autocorrelation waveform (CAZAC) sequences, wherein a time duration of the first reservation preamble includes a plurality of waveform samples of a multi-tone transmission and a switching gap without one or more active transmissions;
• and
• transmitting, on a first timeslot of multiple time slots of a downlink channel, the first reservation preamble of the first operator to at least a user equipment (UE).

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

• determining whether a first reservation preamble of a first operator is received on a first time slot of multiple time slots of a downlink channel from a first network entity, wherein a time duration of the first reservation preamble includes a plurality of waveform samples of a multi-tone transmission and a switching gap without one or more active transmissions;
• and
• transmitting a second reservation preamble of the first operator on an uplink channel to a second network entity based on a determination that the first reservation preamble of the first operator is received.

An apparatus for wireless communications at a user equipment (UE), comprising:

• means for determining whether a first reservation preamble of a first operator is received on a first time slot of multiple time slots of a downlink channel from a first network entity, wherein a time duration of the first reservation preamble includes a plurality of waveform samples of a multi-tone transmission and a switching gap without one or more active transmissions;
• and
• means for transmitting a second reservation preamble of the first operator on an uplink channel to a second network entity based on a determination that the first reservation preamble of the first operator is received.

A non-transitory computer-readable medium storing computer executable code for wireless communications at a user equipment (UE), comprising code for:

• determining whether a first reservation preamble of a first operator is received on a first time slot of multiple time slots of a downlink channel from a first network entity, wherein a time duration of the first reservation preamble includes a plurality of waveform samples of a multi-tone transmission and a switching gap without one or more active transmissions;
• and
• transmitting a second reservation preamble of the first operator on an uplink channel to a second network entity based on a determination that the first reservation preamble of the first operator is received.