公开(公告)号：US20230090317A1

公开(公告)日：2023-03-23

申请号：US17480933

申请日：2021-09-21

Applicant: MEDIATEK INC.

Inventor： Gyu Bum Kyung ,  Cheng-Rung Tsai

IPC: H04B7/08 ,  H04W76/19 ,  H04L5/00 ,  H04W56/00 ,  H04W80/02

Abstract: A unified solution to support all PCell, SCell, and per-TRP based beam failure recovery (BFR) procedure is proposed, with less standard impact and reduced latency. In a first novel aspect, a set of reference signals (RSs) for BFD is configured for each BWP of a serving cell, and a maximum number of BFD RSs (N) per TRP for each BWP of a serving cell is configured. In a second novel aspect, for single DCI multi-TRP, the BFD RSs can be updated via MAC CE to reduce latency. In a third novel aspect, new RRC parameters for BFD RSs and candidate beam RSs are configured, with different sets of SSB/CSI-RS resources associated to each TRP. Specifically, an additional lists of SSB/CSI-RS resource set is defined for each corresponding TRP.