Transport block size (TBS) determination for NR-V2X sidelink with PSCCH signaling for multi transmission time interval (TTI) transmissions

A non-transitory computer-readable storage medium that stores instructions for execution by processing circuitry of a user equipment (UE) configured for New Radio (NR) sidelink transmission, wherein when the UE is operating as a transmitting (TX) UE, the processing circuitry is configured to:

• wherein when the UE is operating as a transmitting (TX) UE for transmission of a NR sidelink communication to another UE without traversing a network node, the processing circuitry is configured to:
• determine a transport block size (TBS) for transmission of a transport block (TB) within a current sidelink slot;
• encode a physical sidelink shared channel (PSCCH) for transmission within the current sidelink slot, the PSCCH encoded to include sidelink control information (SCI), the SCI to indicate a reservation of physical sidelink shared channel (PSSCH) resources within up to three sidelink slots including the current sidelink slot;
• and
• encode a PSSCH for transmission within available PSSCH resources of the current sidelink slot, the PSSCH transmission comprising the TB,
• wherein to determine the TBS, the processing circuitry is configured to determine number of resource elements (REs) within the current sidelink slot that are available for transmission of the PSSCH by at least:
• excluding a number of REs of the current sidelink slot occupied by the PSCCH,
• excluding a number of REs of the current sidelink slot occupied by sidelink PSSCH demodulation reference signals (DMRS) based on a sidelink PSSCH DMRS time pattern indicated by higher layers;
• and
• excluding a number of REs of the current sidelink slot that include a physical sidelink feedback channel (PSFCH) based on a PSFCH period indicated by the higher layers, if the PSFCH is configured for the current sidelink slot.

A system of a user equipment (UE) configured for New Radio (NR) sidelink transmission, the system comprising:

• one or more antennas;
• front-end circuitry coupled to the one or more antennas;
• processing circuitry including a baseband processor, coupled to the front end circuitry;
• and
• memory,
• wherein when the UE is operating as a transmitting (TX) UE for transmission of a NR sidelink communication to another UE, via the one or more antennas, without traversing a network node, the processing circuitry is configured to:
• determine a transport block size (TBS) for transmission of a transport block (TB) within a current sidelink slot;
• encode a physical sidelink shared channel (PSCCH) for transmission within the current sidelink slot, the PSCCH encoded to include sidelink control information (SCI), the SCI to indicate a reservation of physical sidelink shared channel (PSSCH) resources within up to three sidelink slots including the current sidelink slot;
• and
• encode a PSSCH for transmission within available PSSCH resources of the current sidelink slot, the PSSCH transmission comprising the TB,
• wherein to determine the TBS, the processing circuitry is configured to determine number of resource elements (REs) within the current sidelink slot that are available for transmission of the PSSCH by at least:
• excluding a number of REs of the current sidelink slot occupied by the PSCCH,
• excluding a number of REs of the current sidelink slot occupied by sidelink PSSCH demodulation reference signals (DMRS) based on a sidelink PSSCH DMRS time pattern indicated by higher layers;
• and
• excluding a number of REs of the current sidelink slot that include a physical sidelink feedback channel (PSFCH) based on a PSFCH period indicated by the higher layers, if the PSFCH is configured for the current sidelink slot, and
• wherein the memory is configured to store the SCI.