Carrier Aggregation and High Order Modulation in Vehicle-to-Vehicle (V2V) Sidelink Communication

An apparatus, comprising:

• memory;
• and
• processing circuitry in communication with the memory and configured to:
• receive signaling indicating vehicle-to-vehicle (V2V) or sidelink transmission, wherein the signaling indicates using 64 quadrature amplitude modulation (64-QAM);
• in response to the signaling, determine a transport block size (TBS) using a 64-QAM specific table;
• encode a sidelink shared channel transmission using the determined transport block size;
• encode demodulation reference signals (DM-RSs) for the sidelink shared channel transmission by the UE;
• and
• map the sidelink shared channel transmission and the DM-RSs to one or more physical resource blocks (PRBs) that are allocated for a physical sidelink shared channel (PSSCH).

A non-transitory computer-readable storage medium storing program instructions executable by one or more processors to cause a user equipment (UE) to:

• receive signaling indicating sidelink transmission by the UE, wherein the signaling indicates using 64 quadrature amplitude modulation (64-QAM);
• in response to the signaling, determine a transport block size (TBS) using a 64-QAM specific table;
• encode a sidelink shared channel transmission using the determined transport block size;
• encode demodulation reference signals (DM-RSs) for the sidelink shared channel transmission by the UE;
• and
• map the sidelink shared channel transmission and the DM-RSs to one or more physical resource blocks (PRBs) that are allocated for a physical sidelink shared channel (PSSCH).

A method performed by a user equipment device (UE), comprising:

• receiving signaling indicating sidelink transmission by the UE, wherein the signaling indicates using 64 quadrature amplitude modulation (64-QAM);
• in response to the signaling, determining a transport block size (TBS) using a 64-QAM specific table;
• encoding a sidelink shared channel transmission using the determined transport block size;
• encoding demodulation reference signals (DM-RSs) for the sidelink shared channel transmission by the UE;
• and
• mapping the sidelink shared channel transmission and the DM-RSs to one or more physical resource blocks (PRBs) that are allocated for a physical sidelink shared channel (PSSCH).