公开(公告)号：US20210234717A1

公开(公告)日：2021-07-29

申请号：US17053312

申请日：2019-05-24

Applicant: Qualcomm incorporated

Inventor： Sebastian Speicher ,  Haris ZISIMOPOULOS ,  Miguel GRIOT ,  Hong CHENG ,  Juan ZHANG ,  Siefano FACCIN

IPC: H04L12/18 ,  H04W72/00 ,  H04W28/02 ,  H04W36/00

Abstract: Methods, systems, and devices for wireless communications are described. A multicast architecture may support flexible change between unicast and multicast operations and may support additional traffic types (e.g., Internet Protocol and Ethernet traffic). For example, the multicast architecture may include transmitting data over a shared multicast radio bearer (MRB) and/or specific data radio bearers (DRBs), a multicast user plane function (UPF) for supplying the multicast data to a base station, multicast data from different radio access networks (RANs), protecting the multicast data through creating a group key, ciphering the multicast data sent on the MRB using the group key, and transitioning the multicast data from a source RAN to a target RAN.