Techniques for transmission of discovery reference signals in new radio shared spectrum

An apparatus for wireless communications, comprising:

• a transmitter;
• a memory configured to store instructions;
• and
• at least one processor communicatively coupled with the transmitter and the memory, wherein the at least one processor is configured to execute the instructions to:
• detect that a medium in a shared spectrum is busy;
• delay a transmission of a synchronization signal (SS) block in the shared spectrum in response to detecting that the medium is busy;
• detect that the previously busy medium is free;
• and
• transmit, via the transmitter and in response to detecting that the medium is free, a filler signal before transmitting the SS block in the shared spectrum, wherein the SS block includes one or more discovery reference signals (DRSs) and the filler signal comprises a noise signal.

An apparatus for wireless communications, comprising:

• means for detecting that a medium in a shared spectrum is busy;
• means for delaying a transmission of a synchronization signal (SS) block in the shared spectrum in response to detecting that the medium is busy;
• means for detecting that the previously busy medium is free;
• and
• means for transmitting, in response to detecting that the medium is free, a filler signal before transmitting the SS block in the shared spectrum, wherein the SS block includes one or more discovery reference signals (DRSs) and the filler signal comprises a noise signal.

A non-transitory computer-readable medium storing code executable by at least one processor, comprising:

• code to detect that a medium in a shared spectrum is busy;
• code to delay a transmission of a synchronization signal (SS) block in the shared spectrum in response to detecting that the medium is busy;
• code to detect that the previously busy medium is free;
• and
• code to transmit, in response to detecting that the medium is free, a filler signal before transmitting the SS block in the shared spectrum, wherein the SS block includes one or more discovery reference signals (DRSs) and the filler signal comprises a noise signal.