US 12,114,363 B2
Methods for balancing resources utilized in random-access procedures
Krishna Chitti, Secunderabad Telangana (IN); Andreas Cedergren, Bjärred (SE); Robert Mark Harrison, Grapevine, TX (US); Zhipeng Lin, Nanjing Jiangsu (CN); and Jonas Sedin, Sollentuna (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/765,111
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Nov. 5, 2020, PCT No. PCT/SE2020/051064
§ 371(c)(1), (2) Date Mar. 30, 2022,
PCT Pub. No. WO2021/091464, PCT Pub. Date May 14, 2021.
Claims priority of provisional application 62/931,916, filed on Nov. 7, 2019.
Prior Publication US 2022/0386381 A1, Dec. 1, 2022
Int. Cl. H04W 74/0833 (2024.01); H04W 74/00 (2009.01)
CPC H04W 74/0833 (2013.01) [H04W 74/004 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A method for user equipment (UE) random access to a cell in a wireless network, the method comprising:
selecting one of a plurality of available random-access preambles;
mapping the selected random-access preamble to one of a plurality of available physical uplink shared channel (PUSCH) resource units (PRUs) based on a mapping constraint that comprises:
one or more of the available PRUs are not used for the mapping, and
an integer number of the available random-access preambles are mapped to each of the available PRUs that are used for the mapping;
transmitting the selected random-access preamble on a random access channel (RACH); and
transmitting a data message on the PRU to which the selected random-access preamble is mapped.