16.23.4.2.2 Timing acquisition signal

An R2D timing acquisition signal (R-TAS) is transmitted immediately before a PRDCH, and consists of a start indicator part (SIP) followed by a clock acquisition part (CAP). The device determines that an R2D transmission begins upon determining that a SIP of R-TAS has been received. The CAP indicates the number of chips per OFDM symbol and chip duration for PRDCH.