公开(公告)号：US10652918B2

公开(公告)日：2020-05-12

申请号：US15758157

申请日：2016-08-01

Applicant: QUALCOMM Incorporated ,  Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Ruiming Zheng

Inventor： Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Ruiming Zheng

IPC: H04W72/12 ,  H04L5/00 ,  H04W72/04 ,  H04L27/26 ,  H04L5/14 ,  H04W52/02

Abstract: Increased symbol length of uplink pilot time slots (UpPTS) in special subframes is disclosed in which a configuration of a first special subframe may be independent from configuration of a second special subframe in the same frame, such that the first UpPTS of the first special subframe is longer than the second UpPTS of the second special subframe. The second UpPTS of the second special subframe may also be longer than legacy UpPTS length in select configurations. A serving base station may select the special subframe configurations in order to balance sounding reference signal (SRS) capacity for compatible user equipments (UEs) and downlink throughput for legacy UEs. The selected special subframe configurations may be transmitted by the serving base stations. In additional aspects, compatible UEs may be configured with at least two separate SRS power control parameters for use in the additional and legacy UpPTS symbols.

公开(公告)号：US20200036476A1

公开(公告)日：2020-01-30

申请号：US16478759

申请日：2018-02-22

Applicant: Qualcomm Incorporated

Inventor： Yang Yang ,  Jing Jiang ,  Gabi Sarkis ,  Chao Wei ,  Jian Li ,  Hari Sankar ,  Changlong Xu ,  Joseph Binamira Soriaga

IPC: H04L1/00 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. To encode a vector of bits using a polar code, an encoder may allocate information bits of the vector to polarized bit-channels associated with a channel (e.g., a set of unpolarized bit-channels) used for a transmission. In some cases, the polarized bit-channels may be partitioned into groups associated with different values of some associated reliability metric (s). The information bits may be allocated to the polarized bit-channels based on the reliability metrics of the different polarized bit-channels and the overall capacity of a transmission. That is, the bit locations of a transmission may depend on the reliability metrics of different polarized bit-channels and the overall capacity of the transmission. To facilitate puncturing, the overall capacity of the transmission may be adjusted and the unpolarized bit-channels may be partitioned into polarized bit-channels based on the adjusted capacity.

公开(公告)号：US10341896B2

公开(公告)日：2019-07-02

申请号：US15831056

申请日：2017-12-04

Applicant: QUALCOMM Incorporated

Inventor： Peng Cheng ,  Neng Wang ,  Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Hao Xu ,  Jilei Hou

IPC: H04W24/10 ,  H04L5/14 ,  H04L29/08 ,  H04W72/04 ,  H04W76/27 ,  H04L5/00 ,  H04L1/00 ,  H04W88/02 ,  H04W88/08

Abstract: Methods, systems, and devices are described for providing periodic CSI reports and/or aperiodic CSI reports to provide CSI for both anchor and non-anchor TDD subframes in eIMTA. Periodic CSI reports may be provided based on a reference configuration, and aperiodic CSI reports may be provided based on a time of reception of a CSI request and a reference configuration. A UE may determine to report anchor or non-anchor CSI through explicit or implicit signaling. Aperiodic CSI may be used for transmission of anchor subframe CSI reports and periodic CSI may be used for transmission of non-anchor subframe CSI reports, or aperiodic CSI may be used for transmission of non-anchor subframe CSI reports and periodic CSI may be used for transmission of anchor subframe CSI reports. A determination of the reference subframe for aperiodic CSI estimation may be based on a time of receipt of an aperiodic CSI request.

公开(公告)号：US10244518B2

公开(公告)日：2019-03-26

申请号：US14905929

申请日：2014-07-14

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Hao Xu ,  Peter Gaal ,  Neng Wang ,  Chao Wei ,  Minghai Feng

IPC: H04L5/00 ,  H04W72/04 ,  H04W76/28 ,  H04L5/14

Abstract: Aspects of the present disclosure relate to techniques for dynamic indication of Time Division Duplex (TDD) Uplink (UL)/Downlink (DL) subframe configuration to User Equipments. A base station may identify one or more anchor subframes and one or more non-anchor subframes in a frame. The base station may dynamically change a UL/DL configuration of the frame used for communicating with a plurality of User Equipments (UEs) and signal the changed configuration using a common downlink control channel capable of being interpreted by the plurality of UEs in at least one of the one or more anchor subframes of the frame.

公开(公告)号：US20180375560A1

公开(公告)日：2018-12-27

申请号：US16060726

申请日：2016-11-07

Applicant: Chao WEI ,  QUALCOMM Incorporated

Inventor： Chao Wei

IPC: H04B7/06 ,  H04L1/00 ,  H04B7/0456 ,  H04B7/0452 ,  H04L5/14

Abstract: Dynamic reconfiguration of CSI-RS resources for CSI reporting is described for full dimension multiple input, multiple output (FD-MIMO) systems. While a larger number of channel state information (CSI) reference signal (CSI-RS) resources with independent resource configuration are configured and associated with a CSI process, only a subset of resources that are activated by additional signaling are used for CSI measurement and reporting. The set of activated CSI-RS resources may include only a single CSI-RS resource. Both periodic and aperiodic CSI reporting may then be based on the same set of the activated CSI-RS resources. Medium access control (MAC) control elements may be used to provide activation/deactivation of the CSI-RS resources. Additionally, CSI reporting may be based on both the activated CSI-RS resources and the associated number of antenna ports.

公开(公告)号：US10111188B2

公开(公告)日：2018-10-23

申请号：US14781159

申请日：2014-05-09

Applicant: QUALCOMM Incorporated

Inventor： Minghai Feng ,  Neng Wang ,  Chao Wei ,  Jilei Hou

IPC: H04W52/54 ,  H04L5/14 ,  H04W52/14 ,  H04W52/24 ,  H04W52/10

Abstract: Methods, systems, and-devices are described for interference mitigation in a time-division duplex(TDD)wireless communication system. First and second subframe types may be identified for TDD subframes to be transmitted using the system. Different power control parameters associated with each subframe type may be identified based on transmission directions in neighboring cells for the particular subframes. One or more TDD subframes to be transmitted may be identified as a first or second subframe type, and power control may be applied to the transmitted subframes according the power control parameter associated with the subframe type. The identification of subframes and power control parameters to be applied to each type of subframe may be transmitted, for example, to a user equipment(UE). The information may be transmitted to a UE, for example, via radio resource control(RRC)signaling or via a physical layer control channel.

公开(公告)号：US10009164B2

公开(公告)日：2018-06-26

申请号：US14164907

申请日：2013-01-28

Applicant: QUALCOMM Incorporated

Inventor： Jilei Hou ,  Minghai Feng ,  Neng Wang ,  Chao Wei

IPC: H04L5/14 ,  H04L5/00 ,  H04B1/04 ,  H04W72/04 ,  H04W28/18

CPC classification number: H04L5/14 ,  H04B1/04 ,  H04L5/0091 ,  H04W28/18 ,  H04W72/0406

Abstract: In aspects, methods and apparatus for utilizing a reconfiguration timer for updating TDD configuration are provided. Certain aspects of the present disclosure propose methods and apparatus for improving system performance while using adaptive uplink-downlink reconfiguration in a time division duplex (TDD) system. For certain aspects, a reconfiguration timer may be utilized along with a signaling scheme, in order to enjoy benefits of the adaptive uplink-downlink reconfiguration with minimum signaling overhead.

公开(公告)号：US09872193B2

公开(公告)日：2018-01-16

申请号：US14913889

申请日：2014-09-22

Applicant: QUALCOMM Incorporated

Inventor： Peng Cheng ,  Neng Wang ,  Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Hao Xu ,  Jilei Hou

IPC: H04W24/10 ,  H04L5/14 ,  H04L29/08 ,  H04W72/04 ,  H04W76/04 ,  H04W88/02 ,  H04W88/08 ,  H04L5/00

CPC classification number: H04W24/10 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0057 ,  H04L5/14 ,  H04L5/1469 ,  H04L29/08018 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0446 ,  H04W76/27 ,  H04W88/02 ,  H04W88/08

Abstract: Methods, systems, and devices are described for providing periodic CSI reports and/or aperiodic CSI reports to provide CSI for both anchor and non-anchor TDD subframes in eIMTA. Periodic CSI reports may be provided based on a reference configuration, and aperiodic CSI reports may be provided based on a time of reception of a CSI request and a reference configuration. A UE may determine to report anchor or non-anchor CSI through explicit or implicit signaling. Aperiodic CSI may be used for transmission of anchor subframe CSI reports and periodic CSI may be used for transmission of non-anchor subframe CSI reports, or aperiodic CSI may be used for transmission of non-anchor subframe CSI reports and periodic CSI may be used for transmission of anchor subframe CSI reports. A determination of the reference subframe for aperiodic CSI estimation may be based on a time of receipt of an aperiodic CSI request.

公开(公告)号：US20180007663A1

公开(公告)日：2018-01-04

申请号：US15063126

申请日：2015-03-13

Applicant: Ruiming ZHENG ,  Chao WEI ,  QUALCOMM Incorporated

Inventor： Ruiming Zheng ,  Chao Wei

IPC: H04W72/04 ,  H04L5/14

CPC classification number: H04W72/042 ,  H04L5/001 ,  H04L5/0094 ,  H04L5/1438 ,  H04L5/1469

Abstract: Enhancement of long term evolution (LTE) time division duplex (TDD) carrier aggregation for half duplex user equipments (UEs) is discussed. In one aspect of enhanced TDD carrier aggregation, the UE monitoring for a control signal indicating subframe configuration for each TDD cell of an aggregated set of TDD cells in the same band. The UE may determine the downlink subframes and receive downlink transmissions on such subframes based on the control signal. In another aspect, the UE compares the number of scheduled uplink and downlink subframes between the TDD cells in the same band to determine the downlink error-control messaging timing for each cell.

公开(公告)号：US09497002B2

公开(公告)日：2016-11-15

申请号：US14764394

申请日：2014-02-07

Applicant: QUALCOMM INCORPORATED

Inventor： Chao Wei

IPC: H04B7/02 ,  H04L5/00 ,  H04B7/04 ,  H04B7/06 ,  H04W88/08

CPC classification number: H04L5/0048 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/0695 ,  H04W88/08

Abstract: Certain aspects of the present disclosure provide techniques for a user equipment (UE) to efficiently provide feedback regarding preferred beams to a base station (BS) that transmits with different beams from different elevations. The techniques generally involve the BS transmitting first reference signals transmitted, using a plurality of elevation beams. The UE selects at least one preferred elevation beam based on the first reference signals and feeds this back to the BS. The BS transmits second reference signals using the preferred elevation beam and a plurality of azimuthal ports. The UE provides a second stage channel feedback to the base station, based on the second reference signals.

Abstract translation: 本公开的某些方面提供了用于用户设备（UE）有效提供关于优选波束的反馈到基站（BS）的技术，所述基站（BS）以不同波幅的不同高度进行传输。 这些技术通常涉及BS使用多个仰角波束发射发射的第一参考信号。 UE基于第一参考信号选择至少一个优选的仰角波束并将其馈送回BS。 BS使用优选的仰角波束和多个方位角端口发射第二参考信号。 UE基于第二参考信号向基站提供第二级信道反馈。