公开(公告)号：US20230261729A1

公开(公告)日：2023-08-17

申请号：US18003576

申请日：2020-08-21

Applicant: QUALCOMM Incorporated

Inventor： Min Huang ,  Chao Wei ,  Qiaoyu Li ,  Jing Dai ,  Wei Xi ,  Chenxi Hao ,  Kangqi Liu ,  Hao Xu ,  Changlong Xu ,  Wanshi Chen

IPC: H04B7/08 ,  H04B7/06

CPC classification number: H04B7/0888 ,  H04B7/0626 ,  H04B7/0857

Abstract: Aspects of the disclosure relate to transmitting, from a user equipment (UE) to a base station, information indicative of a multicast session that the UE is interested in accessing; transmitting information indicating that a first beam of a plurality of beams is a preferred beam for receiving multicast data associated with the multicast session; receiving, from the base station, a list of at least one beam of the plurality of beams associated with the multicast session; and receiving, from the base station using a beam from the list, multicast data associated with the multicast session. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US20230093589A1

公开(公告)日：2023-03-23

申请号：US17759605

申请日：2020-02-14

Applicant: QUALCOMM Incorporated

Inventor： Liangming Wu ,  Chenxi Hao ,  Yu Zhang ,  Chao Wei ,  Qiaoyu Li ,  Min Huang ,  Hao Xu

IPC: H04B7/06 ,  H04B7/0456

Abstract: A method includes receiving, by a user equipment (UE) device, a joint transmission of channel state information (CSI) reference signals (CSI-RS) from a first transmission and reception point (TRP) associated with a wireless network and at least a second TRP associated with the wireless network. The method further includes determining a joint rank parameter associated with the joint transmission and accessing, based on the joint rank parameter, a rank-to-port mapping codebook to determine a port index parameter. The method further includes, after determining the port index parameter, communicating, by the UE device, with one or more of the first TRP or the second TRP. Other aspects and features are also claimed and described.

公开(公告)号：US11509367B2

公开(公告)日：2022-11-22

申请号：US17312074

申请日：2019-12-20

Applicant: Qualcomm Incorporated ,  Min Huang ,  Chao Wei ,  Chenxi Hao ,  Liangming Wu ,  Qiaoyu Li

Inventor： Min Huang ,  Chao Wei ,  Chenxi Hao ,  Liangming Wu ,  Qiaoyu Li

IPC: H04L23/02 ,  H04B7/0456 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described that provide for channel state information (CSI) feedback for multiple discrete Fourier transform (DFT) beams on multiple transmission layers. A user equipment (UE) may report a total number of non-zero power DFT beams across all of the transmission layers. The UE may be configured with a total number of leading beams (Ktotal) across all of the transmission layers for which to provide high quantization feedback. When the total number of non-zero DFT beams across all the transmission layers exceeds the configured total number of leading beams across all the transmission layers, the UE may report high-resolution quantization feedback for Ktotal non-zero power precoding coefficients having the highest amplitude coefficients, and may report low-resolution quantization feedback for the remaining non-zero power precoding coefficients. A base station may receive the CSI feedback to determine a precoding matrix.