US 12,414,015 B2
5G multicast broadcast service handover
Paul Schliwa-Bertling, Ljungsbro (SE); Alexander Vesely, Feldbach (AT); and Hans Bertil Rönneke, Kungsbacka (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/927,017
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed May 20, 2021, PCT No. PCT/IB2021/054392
§ 371(c)(1), (2) Date Nov. 22, 2022,
PCT Pub. No. WO2021/234635, PCT Pub. Date Nov. 25, 2021.
Claims priority of provisional application 63/029,116, filed on May 22, 2020.
Prior Publication US 2023/0362740 A1, Nov. 9, 2023
Int. Cl. H04W 36/00 (2009.01)
CPC H04W 36/0007 (2018.08) [H04W 36/0016 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method performed by at least one wireless device participating in/that joined a Multicast Broadcast, MB, session for session continuity of the MB Session, the method comprising:
receiving, from a source Next Generation Radio Access Network, NG-RAN, at least one MB Session data while connected in 5G associated to a Temporary Mobile Group Identity, TMGI;
receiving an instruction to handover to a target cell in a target NG-RAN node where context for the MB session associated to the TMGI already exists being handed over to a target NG RAN; and
continuing to receive data of the at least one MB Session associated to the same TMGI via the target NG-RAN as soon as the UE switches to the target cell if context associated with the at least one MB session is active at the target NG RAN.