QUALCOMM Incorporated
DEMODULATION REFERENCE SIGNAL (DMRS) OVERHEAD IN SIDELINK WIRELESS COMMUNICATIONS

Abstract:

Transmit and receive wireless communication devices configured to independently determine the same transport block size (TBS) for use with sidelink communications. In an illustrative example, a transmitting device includes a transceiver; a memory; and a processor, with the processor configured to generate or obtain a Physical Sidelink Feedback Channel (PSFCH) overhead indicator indicating whether PSFCH overhead is used in determining the TBS. The processor also determines a number of demodulation reference signal (DMRS) resource elements (REs) associated with DMRS overhead for use in the TBS determination. The processor determines the TBS based on the number of DMRS REs and on the PSFCH overhead indicator, and then transmits signals to a receiving device using sidelink wireless communication that include a PSFCH overhead indicator. The signals are transmitted according to the determined TBS. The PSFCH overhead indicator indicates whether PSFCH overhead is to be used by the receiving device for TBS determination.