US 12,225,594 B2
Configuring random access channels for wireless communications
Johan Axnäs, Solna (SE); and Henrik Sahlin, Mölnlycke (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed on Apr. 21, 2022, as Appl. No. 17/726,213.
Application 17/726,213 is a continuation of application No. 16/535,705, filed on Aug. 8, 2019, granted, now 11,343,858.
Application 16/535,705 is a continuation of application No. 16/196,341, filed on Nov. 20, 2018, granted, now 10,425,974, issued on Sep. 24, 2019.
Application 16/196,341 is a continuation of application No. PCT/IB2018/056747, filed on Sep. 4, 2018.
Claims priority of provisional application 62/567,168, filed on Oct. 2, 2017.
Prior Publication US 2022/0248459 A1, Aug. 4, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/0833 (2024.01); H04W 72/0446 (2023.01); H04W 72/0453 (2023.01); H04W 74/00 (2009.01); H04W 56/00 (2009.01)
CPC H04W 74/085 (2013.01) [H04W 72/0446 (2013.01); H04W 72/0453 (2013.01); H04W 74/004 (2013.01); H04W 74/0833 (2013.01); H04W 56/00 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method performed by a wireless device operating in an unpaired spectrum, the method comprising:
receiving, from a network, a configuration corresponding to a Physical Random Access Channel (PRACH);
receiving, from the network via Radio Resource Control (RRC) signaling, a bitmap that provides an indication of time locations corresponding to synchronization signal (SS) blocks of an SS burst set transmitted by the network;
restricting at least one PRACH transmission during at least one of the time locations;
determining, based on the configuration and the bitmap, a time slot between the time locations that does not overlap with the time locations; and
performing a PRACH transmission during the time slot.