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    SYSTEMS AND METHODS FOR ENHANCED MIMO OPERATION
    61.
    发明申请
    SYSTEMS AND METHODS FOR ENHANCED MIMO OPERATION 有权
    用于增强MIMO操作的系统和方法

    公开(公告)号：US20140254701A1

    公开(公告)日：2014-09-11

    申请号：US14199743

    申请日：2014-03-06

    Applicant: QUALCOMM Incorporated

    Inventor： Stefan Geirhofer ,  Peter Gaal ,  Wanshi Chen ,  Hao Xu

    IPC: H04B7/06

    CPC classification number: H04B7/0626 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0639 ,  H04B7/0647 ,  H04B7/0695

    Abstract: A method for channel state information (CSI) reporting by a wireless communication device is described. The method includes determining a codebook for a CSI report corresponding to four transmit antenna (4Tx) transmissions from a base station. The codebook has a dual codebook structure. The method also includes generating the CSI report using the codebook. The method further includes transmitting the CSI report to a base station.

    Abstract translation: 描述了由无线通信设备报告信道状态信息（CSI）的方法。 该方法包括确定与来自基站的四个发送天线（4Tx）传输相对应的CSI报告的码本。 该码本具有双码本结构。 该方法还包括使用码本生成CSI报告。 该方法还包括将CSI报告发送到基站。

    STRUCTURE OF ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL (e-PDCCH) IN LONG TERM EVOLUTION (LTE)
    63.
    发明申请
    STRUCTURE OF ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL (e-PDCCH) IN LONG TERM EVOLUTION (LTE) 有权
    长期演进（LTE）中增强物理下行链路控制信道（e-PDCCH）的结构

    公开(公告)号：US20130114565A1

    公开(公告)日：2013-05-09

    申请号：US13665771

    申请日：2012-10-31

    Applicant: QUALCOMM Incorporated

    Inventor： Wanshi Chen ,  Peter Gaal ,  Yongbin Wei ,  Juan Montojo ,  Tao Luo ,  Hao Xu ,  Stefan Geirhofer ,  Jelena Damnjanovic ,  Aleksandar Damnjanovic

    IPC: H04W72/04

    CPC classification number: H04L5/0053 ,  H04L5/0007

    Abstract: Aspects of the present disclosure relate generally to wireless communication systems, and more particularly, to defining a structure of and enhanced physical downlink control channel (e-PDCCH). Certain aspects provide methods and apparatus for determining a search space in which a base station (eNodeB) may transmit an enhanced physical downlink control channel (e-PDCCH), wherein the search space comprises one or more fractional portions of frequency-time resources of a physical resource block (PRB) pair, and attempting to decode the e-PDCCH based on the determined search space.

    Abstract translation: 本公开的方面一般涉及无线通信系统，更具体地，涉及定义和增强物理下行链路控制信道（e-PDCCH）的结构。 某些方面提供用于确定搜索空间的方法和装置，其中基站（eNodeB）可以在其中发送增强的物理下行链路控制信道（e-PDCCH），其中搜索空间包括一个或多个频率 - 时间资源的小数部分 物理资源块（PRB）对，并且基于所确定的搜索空间尝试对所述e-PDCCH进行解码。

    Enhanced SRS transmission for MIMO operation in LTE-A
    65.
    发明授权
    Enhanced SRS transmission for MIMO operation in LTE-A 有权

    公开(公告)号：US10779266B2

    公开(公告)日：2020-09-15

    申请号：US15422185

    申请日：2017-02-01

    Applicant: QUALCOMM Incorporated

    Inventor： Wanshi Chen ,  Peter Gaal ,  Hao Xu ,  Yongbin Wei ,  Stefan Geirhofer

    IPC: H04W72/04 ,  H04B7/0456 ,  H04B7/06 ,  H04J11/00 ,  H04L25/02 ,  H04L5/00 ,  H04B7/0413 ,  H04L5/14 ,  H04B7/08

    Abstract: Enhanced sounding reference signal (SRS) transmissions for multiple input, multiple output (MIMO) operation are disclosed in which a user equipment (UE) detects an observed interference level for each receiver chain of the UE. In response to an imbalance, the UE precodes a SRS targeting downlink operation to indicate the imbalance. The UE then transmits the precoded SRS. In alternative aspects, the precoded SRS vector may be determined by an evolved nodeB (eNB). In such aspects, the eNB determines the precoded SRS vector targeting downlink operations for the served UEs, wherein the determined precoded SRS vector includes determining the precoded SRS vector on a per UE basis, enabling the precoded SRS vector for either one or both of frequency division duplex (FDD) systems and time division duplex (TDD) systems, or enabling the precoded SRS vector for aperiodic SRS only. The eNB then transmits the determined precoded SRS vector to the UE.

    Systems and methods for enhanced MIMO operation
    67.
    发明授权
    Systems and methods for enhanced MIMO operation 有权

    公开(公告)号：US10284273B2

    公开(公告)日：2019-05-07

    申请号：US15621990

    申请日：2017-06-13

    Applicant: QUALCOMM Incorporated

    Inventor： Stefan Geirhofer ,  Peter Gaal ,  Wanshi Chen ,  Hao Xu

    IPC: H04B7/06 ,  H04B7/0456

    Abstract: A method for channel state information (CSI) reporting by a wireless communication device is described. The method includes determining a codebook for a CSI report corresponding to four transmit antenna (4Tx) transmissions from a base station. The codebook has a dual codebook structure. The method also includes generating the CSI report using the codebook. The method further includes transmitting the CSI report to a base station.

    Interference management for adaptive TDD with frequency domain separations
    68.
    发明授权
    Interference management for adaptive TDD with frequency domain separations 有权

    公开(公告)号：US10230517B2

    公开(公告)日：2019-03-12

    申请号：US15403114

    申请日：2017-01-10

    Applicant: QUALCOMM Incorporated

    Inventor： Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Stefan Geirhofer

    IPC: H04L5/00 ,  H04L5/14 ,  H04W72/08 ,  H04W72/12 ,  H04W72/04 ,  H04J1/02 ,  H01J1/02

    Abstract: A method of wireless communication at a serving base station identifies a potential interference condition based on an uplink/downlink configuration mismatch. The method includes signaling, to a neighbor base station, to restrict transmissions based on the identified potential interference condition. The transmissions may be restricted by beamforming the transmissions into a different direction and/or blocking transmissions on a frequency. The signaling prompts the neighbor base station to restrict downlink transmissions that will potentially interfere with uplink control channel transmissions received at the serving base station, or to restrict uplink transmissions, intended for the neighbor base station, that will potentially interfere with downlink control channel transmissions from the serving base station.

    MULTI-HYPOTHESIS CHANNEL QUALITY INDICATOR FEEDBACK
    69.
    发明申请
    MULTI-HYPOTHESIS CHANNEL QUALITY INDICATOR FEEDBACK 审中-公开

    公开(公告)号：US20180145738A1

    公开(公告)日：2018-05-24

    申请号：US15873273

    申请日：2018-01-17

    Applicant: QUALCOMM Incorporated

    Inventor： Stefan Geirhofer ,  Peter Gaal ,  Tingfang Ji ,  Alan Barbieri

    IPC: H04B7/06

    CPC classification number: H04B7/0632 ,  H04W72/1231

    Abstract: A method for providing multi-hypothesis channel quality indicator (MH-CQI) feedback is described. Hypotheses corresponding to rank indicator (RI) and precoding matrix indicator (PMI) assumptions associated with a dominant interferer are selected. Multi-hypothesis channel quality indicator (MH-CQI) values based on the selected hypotheses are generated. The multi-hypothesis channel quality indicator (MH-CQI) values are encoded. The multi-hypothesis channel quality indicator (MH-CQI) values are sent as feedback.

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