US 11,818,769 B2
First network node, second network node and methods performed thereby for handling a random access channel configuration conflict
Angelo Centonza, Torrenueva Costa (ES); Pablo Soldati, Solna (SE); and Ali Parichehrehteroujeni, Linköping (SE)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/298,134
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Aug. 12, 2020, PCT No. PCT/SE2020/050775
§ 371(c)(1), (2) Date May 28, 2021,
PCT Pub. No. WO2021/034246, PCT Pub. Date Feb. 25, 2021.
Claims priority of provisional application 62/887,778, filed on Aug. 16, 2019.
Prior Publication US 2022/0022264 A1, Jan. 20, 2022
Int. Cl. H04W 74/08 (2009.01); H04W 74/00 (2009.01); H04L 5/00 (2006.01)
CPC H04W 74/0841 (2013.01) [H04L 5/0053 (2013.01); H04W 74/008 (2013.01); H04W 74/0866 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method performed by a first network node, the method being for handling a Random Access Channel, RACH, configuration conflict, the first network node operating in a wireless communications network with Radio Access Technology with a split architecture, the first network node being a Distributed Unit, DU, and a second network node being a Centralized Unit, CU, the method comprising:
receiving one or more indications from the second network node operating in the wireless communications network, the one or more indications being one or more second indications, the one or more indications comprising at least one of:
i. a positive acknowledgement or a negative acknowledgement of a RACH configuration conflict detected between a first RACH configuration in a first cell, the first cell being a served cell by the first network node, and a second RACH configuration in a second cell, the second cell being a neighbour cell to the first cell,
ii. CU RACH assistance information associated to the RACH conflict, the CU RACH assistance information comprising the second RACH configuration, and
iii. a first third RACH configuration for the first cell,
detecting an existence of the conflict, and
updating the first RACH configuration to a second third RACH configuration, based on the detected conflict, the second third RACH configuration being obtained based on the received one or more indications, and
sending a first indication to the second network node, the first indication being based on the detected conflict, and the one or more second indications being based on the sent first indication.