US 12,438,653 B2
Access node, user equipment and methods in a wireless communications network
Claes-Göran Persson, Mjölby (SE); Paul Schliwa-Bertling, Ljungsbro (SE); Johan Rune, Lidingö (SE); Pontus Wallentin, Linköping (SE); and Pradeepa Ramachandra, Linköping (SE)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 17/288,706
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Oct. 29, 2019, PCT No. PCT/SE2019/051074
§ 371(c)(1), (2) Date Apr. 26, 2021,
PCT Pub. No. WO2020/091670, PCT Pub. Date May 7, 2020.
Claims priority of provisional application 62/753,980, filed on Nov. 1, 2018.
Prior Publication US 2021/0410027 A1, Dec. 30, 2021
Int. Cl. H04L 1/1867 (2023.01); H04W 36/00 (2009.01); H04W 36/18 (2009.01)
CPC H04L 1/1896 (2013.01) [H04W 36/0058 (2018.08); H04W 36/185 (2023.05)] 6 Claims
OG exemplary drawing
 
1. A method performed by a source access node for performing data forwarding at handover of a UE from a source cell served by the source access node, to a target cell served by a target access node in a wireless communications network, the method comprising:
obtaining a trigger for downlink data forwarding in the source access node, the trigger being obtained from one or both of the UE and the target access node, the trigger comprising an indication that the target access node transmitted a random access response, RAR, to the UE; and
when obtaining the trigger, initiating downlink data forwarding to the UE via the target access node.