Time division duplexing techniques in shared radio frequency spectrum

An apparatus for wireless communication, comprising:

• a processor,
• memory in electronic communication with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• select a time division duplexing (TDD) frame structure for communicating with a user equipment (UE) via a shared radio frequency spectrum, the TDD frame structure including one or more downlink subframes, one or more uplink subframes, and one or more special subframes;
• determine a frame based equipment (FBE) frame starting location for a first FBE frame within a first TDD frame having the TDD frame structure, wherein the FBE frame starting location is offset from an initial subframe of the first TDD frame and aligned with a subsequent subframe boundary of a first downlink subframe that is subsequent to the initial subframe and within the first TDD frame;
• perform a listen-before-talk (LBT) procedure prior to the FBE frame starting location;
• and
• initiate transmissions with the UE responsive to a successful LBT procedure, wherein the transmissions start at the FBE frame starting location and the first FBE frame extend into a second TDD frame having the TDD frame structure.

An apparatus for wireless communication, comprising:

• means for selecting a time division duplexing (TDD) frame structure for communicating with a user equipment (UE) via a shared radio frequency spectrum, the TDD frame structure including one or more downlink subframes, one or more uplink subframes, and one or more special subframes;
• means for determining a frame based equipment (FBE) frame starting location for a first FBE frame within a first TDD frame having the TDD frame structure, wherein the FBE frame starting location is offset from an initial subframe of the first TDD frame and aligned with a subsequent subframe boundary of a first downlink subframe that is subsequent to the initial subframe and within the first TDD frame;
• means for performing a listen-before-talk (LBT) procedure prior to the FBE frame starting location;
• and
• means for initiating transmissions with the UE responsive to a successful LBT procedure, wherein the transmissions start at the FBE frame starting location and the first FBE frame extend into a second TDD frame having the TDD frame structure.

A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to:

• select a time division duplexing (TDD) frame structure for communicating with a user equipment (UE) via a shared radio frequency spectrum, the TDD frame structure including one or more downlink subframes, one or more uplink subframes, and one or more special subframes;
• determine a frame based equipment (FBE) frame starting location for a first FBE frame within a first TDD frame having the TDD frame structure, wherein the FBE frame starting location is offset from an initial subframe of the first TDD frame and aligned with a subsequent subframe boundary of a first downlink subframe that is subsequent to the initial subframe and within the first TDD frame;
• perform a listen-before-talk (LBT) procedure prior to the FBE frame starting location;
• and
• initiate transmissions with the UE responsive to a successful LBT procedure, wherein the transmissions start at the FBE frame starting location and the first FBE frame extend into a second TDD frame having the TDD frame structure.