US 12,068,998 B2
Random access preamble slot allocation
Andres Reial, Malmö (SE); Henrik Sahlin, Mölnlycke (SE); and Oskar Mauritz, Johanneshov (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed on Dec. 19, 2022, as Appl. No. 18/084,000.
Application 18/084,000 is a continuation of application No. 17/191,798, filed on Mar. 4, 2021, granted, now 11,563,544.
Application 17/191,798 is a continuation of application No. 16/490,136, granted, now 10,952,258, issued on Mar. 16, 2021, previously published as PCT/SE2017/051303, filed on Dec. 20, 2017.
Claims priority of provisional application 62/465,488, filed on Mar. 1, 2017.
Prior Publication US 2023/0119731 A1, Apr. 20, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 5/00 (2006.01); H04L 27/26 (2006.01); H04W 72/0446 (2023.01); H04W 74/0833 (2024.01)
CPC H04L 5/0053 (2013.01) [H04L 27/2613 (2013.01); H04W 72/0446 (2013.01); H04W 74/0833 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method, in a user equipment (UE), for transmitting a random access preamble in a cell, the method comprising:
obtaining configurations of a set of random access preambles available in the cell;
determining a slot in which to transmit the random access preamble based on a synchronization signal and the obtained configurations;
selecting a random access preamble from the set of random access preambles, wherein the selected random access preamble is defined based on a combination of a single root sequence from a set of one or more root sequences, a single cyclic shift of a plurality of cyclic shifts for the root sequence, and a single starting position of two or more starting positions within the determined slot; and
transmitting the selected random access preamble.