US 11,877,284 B2
Integrated access and backhaul with reversed scheduling
Henrik Ronkainen, Södra Sandby (SE); and Christer Östberg, Staffanstorp (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/424,626
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Jan. 20, 2020, PCT No. PCT/SE2020/050048
§ 371(c)(1), (2) Date Jul. 21, 2021,
PCT Pub. No. WO2020/153893, PCT Pub. Date Jul. 30, 2020.
Claims priority of provisional application 62/794,932, filed on Jan. 21, 2019.
Prior Publication US 2022/0086884 A1, Mar. 17, 2022
Int. Cl. H04W 72/12 (2023.01); H04W 72/20 (2023.01); H04W 28/16 (2009.01); H04W 40/22 (2009.01); H04W 92/12 (2009.01)
CPC H04W 72/20 (2023.01) [H04W 28/16 (2013.01); H04W 40/22 (2013.01); H04W 92/12 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for performing integrated access and backhaul, IAB, in a cellular telecommunications network that comprises a first IAB node and a second IAB node, the method being performed by the first IAB node, the method comprising:
scheduling, in a first phase, downstream backhaul data from the first IAB node to the second IAB node; and
receiving, in a third phase, from the second IAB node, upstream backhaul data as scheduled by the second IAB node;
wherein:
the downstream backhaul data of the first phase is acknowledged or negatively acknowledged by the second IAB node in the third phase, or
the upstream backhaul data of the third phase is acknowledged or negatively acknowledged by the first IAB node in a subsequent first phase, or
both the downstream backhaul data of the first phase is acknowledged or negatively acknowledged by the second IAB node in the third phase and the upstream backhaul data of the third phase is acknowledged or negatively acknowledged by the first IAB node in the subsequent first phase.