US 11,757,595 B2
NB LTE PRACH design
Xingqin Lin, Santa Clara, CA (US); Ansuman Adhikary, Hyderabad (IN); Niklas Johansson, Uppsala (SE); and Yi-Pin Eric Wang, Fremont, CA (US)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed on Aug. 27, 2021, as Appl. No. 17/458,934.
Application 17/458,934 is a continuation of application No. 16/708,832, filed on Dec. 10, 2019, granted, now 11,108,525.
Application 16/708,832 is a continuation of application No. 15/747,503, granted, now 10,554,366, issued on Feb. 4, 2020, previously published as PCT/IB2016/054399, filed on Jul. 22, 2016.
Claims priority of provisional application 62/197,374, filed on Jul. 27, 2015.
Prior Publication US 2022/0060303 A1, Feb. 24, 2022
Int. Cl. H04L 5/00 (2006.01); H04L 27/26 (2006.01); H04W 74/08 (2009.01); H04W 72/52 (2023.01)
CPC H04L 5/0053 (2013.01) [H04L 27/2605 (2013.01); H04L 27/2613 (2013.01); H04L 27/26025 (2021.01); H04W 72/52 (2023.01); H04W 74/0833 (2013.01); H04W 74/0866 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method in a user equipment, comprising:
determining a coverage level of the user equipment,
selecting a configuration of a time-frequency narrowband physical random access channel (PRACH) resource,
determining, based on the determined coverage level of the user equipment, a number of repetitions for a narrowband random access preamble,
transmitting, to a network node, a narrowband random access message via said PRACH resource, wherein the narrowband random access message includes a repetition of the same said narrowband random access preamble according to the determined number of repetitions,
wherein the narrowband PRACH resource is frequency multiplexed with a narrowband physical uplink shared channel (PUSCH).