公开(公告)号：US20200245176A1

公开(公告)日：2020-07-30

申请号：US16742725

申请日：2020-01-14

Applicant: QUALCOMM Incorporated

Inventor： Yan Zhou ,  Tao Luo ,  Kiran Venugopal ,  Tianyang Bai

IPC: H04W24/10 ,  H04B7/0408 ,  H04W24/08

Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently determining when to transmit a beam report indicating a new beam for communicating with a base station after a current beam used for communications with the base station fails. In one example, after detecting beam failure, a user equipment (UE) may compare a quality of each candidate beam available for communicating with a base station to a beam identification threshold, and the UE may perform beam reporting based on the comparisons (e.g., refrain from transmitting a beam report if the quality of each of the candidate beams is lower than the beam identification threshold). In another example, after detecting beam failure, a UE may compare a quality of each candidate beam available for communicating with a base station to a beam detection threshold, and the UE may perform beam reporting based on the comparisons.

公开(公告)号：US20200229257A1

公开(公告)日：2020-07-16

申请号：US16735378

申请日：2020-01-06

Applicant: QUALCOMM Incorporated

Inventor： Kiran Venugopal ,  Jung Ho Ryu ,  Tianyang Bai ,  Makesh Pravin John Wilson ,  Tao Luo ,  Yan Zhou

IPC: H04W76/18 ,  H04W76/15 ,  H04W72/12 ,  H04W72/04 ,  H04W72/14 ,  H04W24/08

Abstract: Methods, systems, and devices for wireless communications are described that allow secondary cell (SCell) beam failure recovery using a primary cell (PCell). A user equipment (UE) may transmit, via the PCell, an indication of a beam failure of the SCell in a scheduling request (SR) or in a dedicated SR message. After receiving the indication, the base station may request a report from the UE or alternatively, may monitor a set of resources for a report without transmitting a request to the UE. The report may be transmitted via the PCell and may include an indication of a selected beam to use for subsequent communications on the SCell. Based on the report, the base station may modify its transmission configuration for the SCell and communicate with the UE via the selected beam.