公开(公告)号：US11177862B2

公开(公告)日：2021-11-16

申请号：US16088285

申请日：2017-05-10

申请人： QUALCOMM Incorporated ,  Chao Wei ,  Yu Zhang ,  Bo Chen ,  Jilei Hou

发明人： Chao Wei ,  Yu Zhang ,  Bo Chen ,  Jilei Hou

IPC分类号： H04W4/00 ,  H04B7/0452 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/06 ,  H04L5/00

摘要： A hybrid class B channel state information (CSI) reference signal (CSI-RS) scheme is discussed which configures one cell-common beamformed CSI-RS resource for beam tracking and another UE-specific beamformed CSI-RS resource for CSI feedback. The cell-common beamformed CSI-RS resource may be transmitted at a longer periodicity and shared by user equipments (UEs) in the cell. The beamforming may be cycled over a set of predefined weights transparent to UE. The UE-specific beamformed CSI-RS may be transmitted at a shorter periodicity and can be activated dynamically to allow resource sharing among multiple UEs. The UEs will report a CSI for the cell-common beamformed CSI-RS resource which provides a quality indicator for the associated cell-common beam and is utilized by the base station to determine the precoding weight for the UE-specific beamformed CSI-RS resource. Both resources can be configured with different parameter sets, such as number of ports, codebook type, and CSI reporting parameters.

公开(公告)号：US20170244462A1

公开(公告)日：2017-08-24

申请号：US15504232

申请日：2014-09-28

申请人： Chao WEI ,  Yu ZHANG ,  Jilei HOU ,  QUALCOMM Incorporated

发明人： Chao Wei ,  Yu Zhang ,  Jilei Hou

IPC分类号： H04B7/06 ,  H04B7/04

CPC分类号： H04B7/0626 ,  H04B7/0469 ,  H04B7/0478

摘要： Methods and corresponding apparatuses for wireless communication are disclosed. The method for wireless communication includes dividing a two-dimensional antenna array to a plurality of sub-arrays, mapping the two-dimensional antenna array into a one-dimensional vertical channel state information reference signal (CSI-RS) port array for receiving elevation CSI feedback and a one-dimensional horizontal CSI-RS port array for receiving azimuth CSI feedback, and transmitting one or more elevation CSI-RS from the one-dimensional vertical CSI-RS port array and one or more azimuth CSI-RS from the one-dimensional horizontal CSI-RS port array. Methods and corresponding apparatuses for CSI feedback mechanism are also disclosed.

公开(公告)号：US20200036477A1

公开(公告)日：2020-01-30

申请号：US16493364

申请日：2018-04-18

申请人： Changlong XU ,  Jian LI ,  Chao WEI ,  Jing JIANG ,  Jilei HOU ,  Qualcomm Incorporated

发明人： Changlong Xu ,  Jian Li ,  Chao Wei ,  Jing Jiang ,  Jilei Hou

IPC分类号： H04L1/00 ,  H04B7/26 ,  H03M13/09 ,  H03M13/13 ,  G06F9/30 ,  H04W40/02

摘要： Methods, systems, and devices for wireless communication are described for dynamic frozen bits of polar codes for early termination and performance improvement. A wireless device may receive a signal comprising a codeword encoded using a polar code. The wireless device may perform decoding of the codeword including at least: parity check of a first subset of decoding paths for making a decision on early termination of decoding of the codeword based on dynamic frozen bits, and generating path metrics for a second subset of the decoding paths that each pass the parity check based on the dynamic frozen bits, and performing error detection on a bit sequence corresponding to one of the second subset of the decoding paths based at part on error detection bits and the generated path metrics. The wireless device may process the information bits based on a result of the decoding.

公开(公告)号：US20160056907A1

公开(公告)日：2016-02-25

申请号：US14781157

申请日：2014-05-08

申请人： Chao WEI ,  Minghai FENG ,  Neng WANG ,  Jilei HOU ,  QUALCOMM INCORPORATED

发明人： Chao Wei ,  Minghai Feng ,  Neng Wang ,  Jilei Hou

IPC分类号： H04J11/00 ,  H04L5/14 ,  H04J3/16

CPC分类号： H04J11/005 ,  H04J3/1694 ,  H04L5/14 ,  H04W16/10 ,  H04W72/1226

摘要： Methods, systems, and devices are described for interference mitigation between neighboring cells through the use of cell clusters and virtual logical cell clusters. Cells may be added to a cell cluster with a first cell when a level of interference coupling between the first cell and one or more neighboring cells exceeds a first threshold. One or more other cells may be added to a virtual logical cell cluster with the first cell when the level of interference coupling is between a second threshold and the first threshold, the second threshold being less than the first threshold. Interference mitigation between cells of cell clusters and/or virtual logical cell clusters may be performed. Interference mitigation may be accomplished through, for example, coordination of TDD uplink-downlink (UL-DL) configurations for cell clusters and scheduling-dependent interference management (SDIM) for virtual logical cell clusters.

摘要翻译： 描述了通过使用小区集群和虚拟逻辑小区集群来在相邻小区之间进行干扰减轻的方法，系统和装置。 当第一小区和一个或多个相邻小区之间的干扰耦合水平超过第一阈值时，小区可以被添加到具有第一小区的小区簇。 当干扰耦合的水平处于第二阈值和第一阈值之间时，一个或多个其它小区可被添加到具有第一小区的虚拟逻辑小区簇，第二阈值小于第一阈值。 可以执行小区簇和/或虚拟逻辑小区群的小区之间的干扰减轻。 干扰减轻可以通过例如协调用于小区集群的TDD上行链路 - 下行链路（UL-DL）配置和用于虚拟逻辑小区集群的调度相关干扰管理（SDIM）来实现。

公开(公告)号：US20160029358A1

公开(公告)日：2016-01-28

申请号：US14773869

申请日：2013-03-15

申请人： Jilei HOU ,  Neng WANG ,  Chao WEI ,  QUALCOMM INCORPORATED

发明人： Jilei Hou ,  Neng Wang ,  Chao Wei

IPC分类号： H04W72/04 ,  H04W74/08 ,  H04B7/06

CPC分类号： H04W72/046 ,  H04B7/0695 ,  H04W74/0833

摘要： A method for improved random access procedures by a UE is provided. The method comprises: measuring a common CSI-RS; selecting a best horizontal/vertical beam from a set of fixed beams; determining a preamble mapped to the selected horizontal/vertical beam; transmitting the preamble; and receiving a random access response.

摘要翻译： 提供了一种用于UE改进随机接入过程的方法。 该方法包括：测量公共CSI-RS; 从一组固定光束中选择最佳水平/垂直光束; 确定映射到所选择的水平/垂直波束的前导码; 传送序言; 并接收随机接入响应。

公开(公告)号：US20150327324A1

公开(公告)日：2015-11-12

申请号：US14654660

申请日：2014-01-27

申请人： Chao WEI ,  Xipeng ZHU ,  Jilei HOU ,  Neng WANG ,  QUALCOMM INCORPORATED

发明人： Chao Wei ,  Xipeng Zhu ,  Jilei Hou ,  Neng Wang

IPC分类号： H04W76/04 ,  H04W74/00

CPC分类号： H04W74/002 ,  H04W52/02 ,  H04W52/0216 ,  H04W52/0235 ,  H04W76/28 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/22 ,  Y02D70/24 ,  Y02D70/25

摘要： Methods, systems, and devices are described for discontinuous transmission and/or discontinuous reception in time division duplex (TDD) systems that may have data transmission formats dynamically reconfigured. An initial uplink-downlink (UL-DL) configuration for TDD communication between an eNB and user equipment (UE) may be established. This initial UL-DL configuration may be reconfigured to a different UL-DL configuration for one or more UEs in communication with the eNB. When a UE switches to discontinuous reception (DRX) mode, it may monitor control information from the eNB during DRX on periods, a frequency of the DRX on periods based on a reference UL-DL configuration irrespective of any reconfiguration of UL-DL configuration for a particular UE. In some aspects, a UE that is operating in a UL-DL reconfiguration mode may, upon entering DRX mode, autonomously discontinue operating in the UL-DL re-configuration mode.

摘要翻译： 描述了可能具有动态重新配置的数据传输格式的时分双工（TDD）系统中的不连续传输和/或不连续接收的方法，系统和设备。 可以建立用于eNB和用户设备（UE）之间的TDD通信的初始上行链路 - 下行链路（UL-DL）配置。 对于与eNB通信的一个或多个UE，可将该初始UL-DL配置重新配置为不同的UL-DL配置。 当UE切换到不连续接收（DRX）模式时，它可以在DRX开启周期期间监视来自eNB的控制信息，该DRX周期是基于参考UL-DL配置的DRX开启周期的频率，而不管UL-DL配置的任何重新配置​​如何， 一个特定的UE。 在一些方面中，在进入DRX模式时，以UL-DL重新配置模式工作的UE可以在UL-DL重新配置模式下自主地停止工作。

公开(公告)号：US20160173180A1

公开(公告)日：2016-06-16

申请号：US14889108

申请日：2014-06-12

申请人： Peng CHENG ,  Chao WEI ,  Neng WANG ,  Jilei HOU ,  QUALCOMM INCORPORATED

发明人： Peng Cheng ,  Chao Wei ,  Neng Wang ,  Jilei Hou

IPC分类号： H04B7/04 ,  H04L27/26

CPC分类号： H04B7/0478 ,  H04B7/0417 ,  H04B7/0469 ,  H04B7/0617 ,  H04L27/2628

摘要： The present disclosure relates to systems and methods for a two-dimensional discrete Fourier transform based codebook for elevation beamforming. A two-dimensional discrete Fourier transform based codebook is determined for elevation beamforming. The codebook supports single stream codewords and multistream codewords. The two-dimensional discrete Fourier transform based codebook is generated by stacking the columns of the matrix product of two discrete Fourier transform codebook matrices. The codebook size may be flexibly designed based on required beam resolution in azimuth and elevation. A best codebook index is selected from the generated two-dimensional discrete Fourier transform based codebook. The selected codebook index is provided in a channel state information report. The channel state information report is transmitted to a base station.

摘要翻译： 本公开涉及用于仰角波束成形的基于二维离散傅里叶变换的码本的系统和方法。 基于二维离散傅里叶变换的码本被确定为仰角波束成形。 码本支持单流码字和多码流码字。 基于二维离散傅里叶变换的码本通过堆叠两个离散付里叶变换码本矩阵的矩阵乘积的列来生成。 可以基于方位角和高程中所需的光束分辨率灵活地设计码本大小。 从生成的基于二维离散傅立叶变换的码本中选择最佳码本索引。 所选码本索引在信道状态信息报告中提供。 信道状态信息报告被发送到基站。

公开(公告)号：US20150341927A1

公开(公告)日：2015-11-26

申请号：US14653114

申请日：2014-01-16

申请人： Chao Wei ,  Neng Wang ,  Minghai Feng ,  Jilei Hou ,  Qualcomm Incorporated

发明人： Chao Wei ,  Neng Wang ,  Minghai Feng ,  Jilei Hou

IPC分类号： H04W72/04 ,  H04W76/04 ,  H04L1/18 ,  H04L5/14 ,  H04W72/14

CPC分类号： H04W72/0446 ,  H04L1/1614 ,  H04L1/1812 ,  H04L1/1854 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0055 ,  H04L5/0092 ,  H04L5/14 ,  H04L5/1469 ,  H04W72/14 ,  H04W76/27 ,  H04W88/02

摘要： Methods, systems, and devices are described for reconfiguring a user equipment (UE) to operate in a reconfigured TDD UL-DL configuration. An initial uplink-downlink (UL-DL) configuration for TDD communication may be provided for communication between an e Node B and a UE. One or more subframes within each frame transmitted using the initial UL-DL configuration may be identified as flexible subframes. The identification of flexible subframes may permit the identification of timing for HARQ transmissions that does not change when a reconfiguration takes place. A different UL-DL configuration may be transmitted to the UE, in which at least one flexible subframe is to be changed from an uplink subframe to a downlink subframe. The different UL-DL configuration may be transmitted by, for example, a pseudo-uplink grant to the UE, which indicates that the UE is to reconfigure one or more flexible subframes from uplink to downlink transmission.

摘要翻译： 描述了用于重新配置用户设备（UE）以在重新配置的TDD UL-DL配置中操作的方法，系统和设备。 可以提供用于TDD通信的初始上行链路 - 下行链路（UL-DL）配置，用于e节点B和UE之间的通信。 使用初始UL-DL配置发送的每个帧内的一个或多个子帧可以被识别为灵活的子帧。 灵活子帧的识别可以允许识别在发生重新配置时不改变的HARQ传输的定时。 可以向UE发送不同的UL-DL配置，其中至少一个灵活子帧将从上行链路子帧改变到下行链路子帧。 可以通过例如伪上行链路授权向UE发送不同的UL-DL配置，其指示UE将从上行链路到下行链路传输重新配置一个或多个灵活的子帧。

公开(公告)号：US20150334704A1

公开(公告)日：2015-11-19

申请号：US14650669

申请日：2014-01-09

申请人： Chao WEI ,  Jiming GUO ,  Jilei HOU ,  QUALCOMM INCORPORATED

发明人： Chao Wei ,  Jiming Guo ,  Jilei Hou

IPC分类号： H04W72/04 ,  H04W24/02 ,  H04L5/14

CPC分类号： H04W72/0446 ,  H04L5/14 ,  H04W24/02

摘要： Dynamic intra-cluster coordination for TDD UL-DL reconfiguration using distributed TDD UL-DL reconfiguration techniques and/or new physical layer signaling. Cell weighting techniques may be used so that distributed TDD UL-DL reconfiguration of the cell cluster can be weighted towards cells of the cluster with higher load. Cells within a cell cluster may independently determine their preferred TDD UL-DL reconfiguration and one or more cells of the cluster may be eligible cells for determining the TDD UL-DL reconfiguration for the cluster. Special subframes may be used for transmission of TDD UL-DL reconfiguration messages from the configuring cell and transmission of ACK messages from other cells of the cluster. The TDD UL-DL reconfiguration message may be an orthogonal sequence based on a signature determined by the cell ID of the configuring cell.

摘要翻译： 使用分布式TDD UL-DL重配置技术和/或新的物理层信令的TDD UL-DL重配置的动态集群内协调。 可以使用小区加权技术，使得小区集群的分布式TDD UL-DL重新配置可以以更高的负载向集群的小区加权。 小区簇内的小区可以独立地确定其优选的TDD UL-DL重新配置，并且该簇的一个或多个小区可以是用于确定簇的TDD UL-DL重新配置的合格小区。 可以将特殊子帧用于从配置小区发送TDD UL-DL重新配置消息，并从集群的其他小区发送ACK消息。 TDD UL-DL重配置消息可以是基于由配置小区的小区ID确定的签名的正交序列。

公开(公告)号：US11171672B2

公开(公告)日：2021-11-09

申请号：US16471388

申请日：2018-01-16

申请人： Jian Li ,  Changlong Xu ,  Chao Wei ,  Jilei Hou ,  Jing Jiang ,  QUALCOMM Incorporated

发明人： Jian Li ,  Changlong Xu ,  Chao Wei ,  Jilei Hou ,  Jing Jiang

IPC分类号： H03M13/35 ,  H03M7/30 ,  H03M13/09 ,  H03M13/13 ,  H03M13/29 ,  H04L1/00

摘要： Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for dynamic frozen polar codes, for example, for control channels. An exemplary method may be performed at the encoder. The method generally includes encoding a stream of bits using a polar code. The encoding includes selecting a first set of channel indices for encoding information bits. The encoding includes selecting a second set of the channel indices smaller than a channel index for a first information bit for encoding fixed frozen bits. The encoding includes selecting remaining channel indices for dynamic frozen (PCF) bits having values based on one or more of the information bits. The method includes transmitting the encoded stream of bits.