US 11,758,432 B2
Enhanced end to end flow control for multi-hop integrated access backhaul (IAB) networks
Oumer Teyeb, Solna (SE); and Gunnar Mildh, Sollentuna (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/266,660
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Aug. 9, 2019, PCT No. PCT/IB2019/056809
§ 371(c)(1), (2) Date Feb. 8, 2021,
PCT Pub. No. WO2020/031154, PCT Pub. Date Feb. 13, 2020.
Claims priority of provisional application 62/716,681, filed on Aug. 9, 2018.
Prior Publication US 2021/0314809 A1, Oct. 7, 2021
Int. Cl. H04W 28/02 (2009.01); H04W 76/12 (2018.01); H04W 28/12 (2009.01); H04W 88/14 (2009.01)
CPC H04W 28/0284 (2013.01) [H04W 28/0278 (2013.01); H04W 28/12 (2013.01); H04W 76/12 (2018.02); H04W 88/14 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method, performed by an integrated access backhaul (IAB) node in a radio network, the method comprising:
generating a delivery status that indicates a status of a data connection carried by the IAB node,
wherein the data connection has a logical interface connection to a central unit (CU) node, and
wherein the logical interface connection of the data connection is not terminated at the IAB node; and
transmitting the delivery status to the CU node in response to a downlink delivery status request message from the CU node,
wherein the downlink delivery status request message includes a time value that specifies that the IAB node should send the delivery status every time a timer expires until a certain number of delivery statuses are sent;
wherein the delivery status comprises a buffer size list including pairs of IAB node addresses and buffer statuses of buffers.