Collision deadlock resolution

An apparatus for wireless communication, the apparatus comprising:

• a processor;
• a transceiver communicatively coupled to the processor;
• and
• a memory communicatively coupled to the processor,
• wherein the processor is configured to:
• in a first discovery frame, determine whether a discovery resource corresponding to a particular communication channel is available for communication;
• if the discovery resource is available for communication, in each of two second discovery frames following the first discovery frame, transmit a discovery signal using the discovery resource and puncture the discovery signal during a listening window, wherein a duration of time or number of symbols of the listening window in a first of the two second discovery frames is different from the duration of time or number of symbols of the listening window in a second of the two second discovery frames;
• detect an energy of a received signal at the discovery resource during the listening window;
• and
• abandon the discovery resource if the detected energy is above a first threshold.

A non-transitory computer-readable medium storing computer-executable code comprising instructions configured to:

• in a first discovery frame, determine whether a discovery resource corresponding to a particular communication channel is available for communication;
• if the discovery resource is available for communication, in each of two second discovery frames following the first discovery frame, transmit a discovery signal using the discovery resource and puncture the discovery signal during a listening window, wherein a duration of time or number of symbols of the listening window in a first of the two second discovery frames is different from the duration of time or number of symbols of the listening window in a second of the two second discovery frames;
• detect an energy of a received signal at the discovery resource during the listening window;
• and
• abandon the discovery resource if the detected energy is above a first threshold.

An apparatus for wireless communication, the apparatus comprising:

• means for, in a first discovery frame, determining whether a discovery resource corresponding to a particular communication channel is available for communication;
• if the discovery resource is available for communication, means for transmitting, in each of two second discovery frames following the first discovery frame, a discovery signal using the discovery resource and puncturing the discovery signal during a listening window;
• means for detecting an energy of a received signal at the discovery resource during the listening window, wherein a duration of time or number of symbols of the listening window in a first of the two second discovery frames is different from the duration of time or number of symbols of the listening window in a second of the two second discovery frames;
• and
• means for abandoning the discovery resource if the detected energy is above a first threshold.