公开(公告)号：US20200351933A1

公开(公告)日：2020-11-05

申请号：US16863782

申请日：2020-04-30

Applicant: QUALCOMM Incorporated

Inventor： Wooseok Nam ,  Juan Montojo ,  Tao Luo ,  Wanshi Chen ,  Peter Pui Luk Ang ,  Peter Gaal ,  Gabi Sarkis

IPC: H04W72/14 ,  H04W72/04 ,  H04W24/08 ,  H04L1/18 ,  H04L5/00 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described that support feedback for multicast communications. A user equipment (UE) in a group of UEs may receive multicast information from a base station in a downlink (DL) transmission scheduled by a DL grant. The DL grant may also indicate a set of uplink resources for the group of UEs to use to transmit feedback. The UE may attempt to decode a message containing the multicast information in the DL transmission. If the UE determines the message was successfully decoded, the UE may send no feedback to the base station. If the UE determines the message was not successfully decoded, the UE may transmit a feedback message to the base station to indicate the message was unsuccessfully decoded. The base station may monitor for the feedback message and determine to retransmit the multicast information if the feedback message is received.