CPC H04W 74/0833 (2013.01) [H04B 17/318 (2015.01); H04L 5/0048 (2013.01); H04W 24/08 (2013.01); H04W 72/04 (2013.01)] | 18 Claims |
1. A method for performing a random access (RA) procedure by a user equipment (UE) in a wireless communication system, the method comprising:
receiving a downlink reference signal in a downlink bandwidth part (DL BWP);
performing a measurement based on the received downlink reference signal;
based on the measurement, performing a 2-step RA procedure in an uplink (UL) BWP;
based on the 2-step RA procedure being initiated, transmitting a message A (msgA) including both a RA preamble and a physical uplink shared channel (PUSCH), wherein a cell-radio network temporary identifier (C-RNTI) is included in the msgA;
receiving a physical downlink control channel (PDCCH) for scheduling a physical downlink shared channel (PDSCH); and
receiving the PDSCH based on the PDCCH,
wherein, based on the PDCCH for the C-RNTI and based on the PDSCH including a timing advanced (TA) command, the UE considers the RA procedure as successfully completed.
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