CPC H04W 74/0816 (2013.01) [H04W 72/23 (2023.01); H04W 74/002 (2013.01); H04W 74/085 (2013.01)] | 9 Claims |
1. A user equipment comprising circuitry, the circuitry configured to
receive, from a network node, a configuration including a first threshold with respect to a first counter for falling back to 4-step random access (RA);
based on confirming that a value of the first counter is not greater than the first threshold, increment a second counter and transmit a MsgA as a 2-step RA preamble transmission to the network node, the second counter being for calculating a RA target power for the 2-step RA preamble transmission;
receive, from the network node, a MsgB as a Random Access Response (RAR) for the 2-step RA preamble transmission, wherein the MsgB is comprised of an indication that a MsgA payload was unsuccessfully decoded and uplink (UL) grant for a Msg3 transmission, wherein the indication that the MsgA payload was unsuccessfully decoded is provided by a field for RA preamble ID in a MAC subheader; and
based on detecting the indication, commence with step 3 of the 4-step RA by transmitting, to the network node, a Msg3 on UL resources configured in the UL grant, wherein the Msg3 comprises the MsgA payload.
|