US 11,991,749 B2
Method and apparatus for random access preamble partition for small data transmission in a wireless communication system
Yi-Hsuan Huang, Taipei (TW); and Meng-Hui Ou, Taipei (TW)
Assigned to ASUSTek Computer Inc., Taipei (TW)
Filed by ASUSTek Computer Inc., Taipei (TW)
Filed on Mar. 31, 2021, as Appl. No. 17/219,107.
Claims priority of provisional application 63/015,238, filed on Apr. 24, 2020.
Claims priority of provisional application 63/002,716, filed on Mar. 31, 2020.
Prior Publication US 2021/0307073 A1, Sep. 30, 2021
Int. Cl. H04W 74/08 (2009.01); H04W 74/00 (2009.01); H04W 74/02 (2009.01); H04W 74/0833 (2024.01)
CPC H04W 74/0833 (2013.01) [H04W 74/008 (2013.01); H04W 74/02 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for a User Equipment (UE), comprising:
receiving, from a network node, a configuration of a 2-step random access (RA);
receiving, from the network node, a second parameter indicating a starting preamble and a third parameter indicating a number of preambles;
initiating a RA procedure for a 2-step RA for small data;
determining a RA preamble for the RA procedure based on the second parameter and the third parameter; and
determining Random Access Channel (RACH) occasion(s) for the RA procedure based on whether a first parameter is present or absent in the configuration of the 2-step RA, wherein:
the RACH occasion(s) for the RA procedure shares RACH occasion(s) for the 2-step RA in case the first parameter is present in the configuration of the 2-step RA, and
the RACH occasion(s) for the RA procedure shares RACH occasion(s) for a 4-step RA in case the first parameter is absent in the configuration of the 2-step RA.