公开(公告)号：US20170295000A1

公开(公告)日：2017-10-12

申请号：US15460079

申请日：2017-03-15

Applicant: QUALCOMM INCORPORATED

Inventor： TAESANG YOO ,  ZHIFEI FAN ,  WEILIANG ZENG ,  JING SUN ,  JUAN MONTOJO

IPC: H04L5/00 ,  H04L27/26 ,  H04B17/336

CPC classification number: H04L5/0048 ,  H04B17/336 ,  H04J13/004 ,  H04L5/0007 ,  H04L5/0026 ,  H04L5/005 ,  H04L5/026 ,  H04L27/2613 ,  H04L27/2636

Abstract: Methods, systems, and devices for wireless communication are described. A base station may multiplex reference signal (RS) transmissions for different antenna ports over a set of resource elements using a code division multiplexing (CDM) group spreading in a time dimension and a frequency dimension. The base station may transmit the RS transmissions over the set of resource elements based at least in part on the multiplexing to a user equipment (UE). The UE may demultiplex the RS transmissions based at least in part on a CDM group and may select at least one of the time dimension or the frequency dimension over which to demultiplex the RS transmissions based on a determination or other information.

公开(公告)号：US20220264640A1

公开(公告)日：2022-08-18

申请号：US17658524

申请日：2022-04-08

Applicant: QUALCOMM Incorporated

Inventor： JING SUN ,  Xiaoxia Zhang ,  Taesang Yoo ,  Tamer Kadous ,  Yongbin Wei ,  Aleksandar Damnjanovic

IPC: H04W74/08 ,  H04W72/14

Abstract: New radio (NR) transmission opportunity (TxOP) structure having flexible starting points are disclosed for wireless communications. When a typical listen before talk (LBT) procedure is performed, the transmitting node will not know ahead of time when the LBT will pass and, thus, when data transmissions can start. NR systems may include a mini-slot design for accommodating transmission units smaller than a slot. Aspects of the present disclosure provide for flexibly increasing the number of potential starting transmission boundaries depending on when the LBT pass is detected. Alternative aspects of the present disclosure determine the potential starting transmission points using a mini-slot based design, a floating slot based design, or a punctured slot based design with a code block group (CBG) level retransmission mechanism.

公开(公告)号：US20170026935A1

公开(公告)日：2017-01-26

申请号：US15199119

申请日：2016-06-30

Applicant: QUALCOMM INCORPORATED

Inventor： XIAOXIA ZHANG ,  JING SUN

IPC: H04W72/00 ,  H04W72/04 ,  H04W4/06

Abstract: Enhancement of multicast-broadcast multimedia services is disclosed by providing multiple layers that may carry additional or enhanced information. The layers may be defined over a single multicast-broadcast single frequency network (MBSFN) area, or, in additional aspects, may be defined having separate MBSFN areas. When the network provides a single MBSFN area for each layer, control information for the layers may be transmitted in a scheduled multicast-broadcast control message, while when the layers are nested with separate MBSFN areas, the control information for each layer may be transmitted in a separate multicast-broadcast control message.

Abstract translation: 通过提供可承载附加或增强信息的多个层来公开多播广播多媒体服务的增强。 可以通过单个多播广播单频网络（MBSFN）区域来定义这些层，或者在另外的方面，可以定义具有单独的MBSFN区域。 当网络为每个层提供单个MBSFN区域时，可以在调度的多播广播控制消息中发送用于各层的控制信息，而当层被分离为单独的MBSFN区域时，每层的控制信息可以以 单独的多播广播控制消息。