5.5 PCH reception
38.3213GPPMedium Access Control (MAC) protocol specificationNRRelease 17TS
When the MAC entity needs to receive PCH, the MAC entity shall:
1> if a PCH assignment has been received on the PDCCH for the P-RNTI:
2> attempt to decode the TB on the PCH as indicated by the PDCCH information;
2> if the TB on the PCH has been successfully decoded:
3> deliver the decoded MAC PDU to upper layers.