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    Enhanced SRS transmission for MIMO operation in LTE-A
    444.
    发明授权
    Enhanced SRS transmission for MIMO operation in LTE-A 有权
    LTE-A中用于MIMO操作的增强型SRS传输

    公开(公告)号：US09596065B2

    公开(公告)日：2017-03-14

    申请号：US13773316

    申请日：2013-02-21

    Applicant: QUALCOMM Incorporated

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

    IPC: H04L5/00 ,  H04L25/02 ,  H04J11/00 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08

    CPC classification number: H04W72/042 ,  H04B7/0413 ,  H04B7/046 ,  H04B7/0602 ,  H04B7/0613 ,  H04B7/0615 ,  H04B7/0619 ,  H04B7/0634 ,  H04B7/0684 ,  H04B7/0697 ,  H04B7/0802 ,  H04J11/005 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0073 ,  H04L5/14 ,  H04L25/0206

    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.

    Abstract translation: 公开了用于多输入多输出（MIMO）操作的增强的探测参考信号（SRS）传输，其中用户设备（UE）检测UE的每个接收机链的观测到的干扰等级。 响应于不平衡，UE预编码针对下行链路操作的SRS以指示不平衡。 然后，UE发送预编码的SRS。 在替代方面，预编码的SRS向量可以由演进节点B（eNB）确定。 在这些方面中，eNB确定针对所服务的UE的针对下行链路操作的预编码的SRS矢量，其中所确定的预编码的SRS矢量包括在每个UE的基础上确定预编码的SRS矢量，使得能够对分频中的一个或两者进行预编码的SRS矢量 双工（FDD）系统和时分双工（TDD）系统，或仅使经过预编码的SRS矢量用于非周期性SRS。 然后，eNB将确定的预编码的SRS向量发送给UE。

    TECHNIQUES FOR ALLOCATING TIME AND FREQUENCY RESOURCES TO AN UPLINK CHANNEL TO CARRY UPLINK CONTROL INFORMATION USED FOR NARROWBAND COMMUNICATION
    445.
    发明申请
    TECHNIQUES FOR ALLOCATING TIME AND FREQUENCY RESOURCES TO AN UPLINK CHANNEL TO CARRY UPLINK CONTROL INFORMATION USED FOR NARROWBAND COMMUNICATION 审中-公开
    将时间和频率资源分配给上行链路以实施用于窄带通信的上行控制信息的技术

    公开(公告)号：US20170064694A1

    公开(公告)日：2017-03-02

    申请号：US15245640

    申请日：2016-08-24

    Applicant: QUALCOMM Incorporated

    Inventor： Renqiu Wang ,  Wanshi Chen ,  Alberto Rico Alvarino ,  Hao Xu ,  Peter Gaal ,  Seyed Ali Akbar Fakoorian ,  Madhavan Srinivasan Vajapeyam

    IPC: H04W72/04 ,  H04W74/08 ,  H04B7/06 ,  H04L5/00

    CPC classification number: H04W72/0413 ,  H04B7/0626 ,  H04B7/0632 ,  H04J2013/0088 ,  H04L5/0048 ,  H04L5/0055 ,  H04W72/044 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/1278 ,  H04W74/0833

    Abstract: Techniques are described for wireless communication. A method for wireless communication at a base station includes identifying time resources and frequency resources for narrowband communication in a plurality of subframes, identifying a plurality of user equipment (UE) devices, allocating a first portion of the time resources and the frequency resources to an uplink (UL) channel to carry UL control information, and allocating resources of the UL channel to the identified UE devices. A method for wireless communication at a UE device includes identifying time resources and frequency resources for narrowband communication in a plurality of subframes, receiving an indication of at least a first portion of the time resources and the frequency resources allocated to a UL channel to carry UL control information for the UE device, and transmitting one or both of downlink acknowledgements (ACKs) and downlink non-acknowledgements (NAKs) on the UL channel.

    Abstract translation: 技术描述为无线通信。 一种用于基站的无线通信的方法包括识别用于多个子帧中的窄带通信的时间资源和频率资源，识别多个用户设备（UE）设备，将时间资源的第一部分和频率资源分配给 上行链路（UL）信道来携带UL控制信息，并且将UL信道的资源分配给所识别的UE设备。 一种用于UE设备的无线通信的方法包括识别多个子帧中的窄带通信的时间资源和频率资源，接收分配给UL信道的至少第一部分时间资源和频率资源的指示以携带UL 用于UE设备的控制信息，以及在UL信道上发送下行链路确认（ACK）和下行链路非确认（NAK）中的一个或两个。

    Techniques for controlling transmission power in shared radio frequency spectrum
    446.
    发明授权
    Techniques for controlling transmission power in shared radio frequency spectrum 有权
    用于控制共享射频频谱中发射功率的技术

    公开(公告)号：US09585103B2

    公开(公告)日：2017-02-28

    申请号：US14603839

    申请日：2015-01-23

    Applicant: QUALCOMM Incorporated

    Inventor： Wanshi Chen ,  Peter Gaal ,  Aleksandar Damnjanovic ,  Shimman Arvind Patel ,  Kiran Kumar Somasundaram ,  Tingfang Ji ,  Hao Xu ,  Tao Luo

    IPC: H04W52/18 ,  H04W52/16 ,  H04W16/14 ,  H04W52/14 ,  H04W52/34 ,  H04W52/42 ,  H04W52/50

    CPC classification number: H04W52/18 ,  H04W16/14 ,  H04W52/143 ,  H04W52/146 ,  H04W52/16 ,  H04W52/346 ,  H04W52/42 ,  H04W52/50

    Abstract: Certain aspects of the present disclosure provide techniques for controlling transmission power in shared radio frequency spectrum (SRFS). According to techniques, devices (e.g., BSs, UEs, etc.) transmitting in SRFS band may win contention to the SRFS band for at least a portion of a radio frame period. For example, the radio frame period may include a plurality of subframe periods. The devices may also transmit a first signal at a first transmit power during a first subframe period of the radio frame period and transmit a second signal at a second transmit power during a second subframe period of the radio frame period. For example, the first transmit power and second transmit power may be controlled based, at least in part, on a power level determined for the radio frame period.

    Abstract translation: 本公开的某些方面提供了用于控制共享射频（SRFS）中的发射功率的技术。 根据技术，在SRFS频带中发射的设备（例如，BS，UE等）可以在无线电帧周期的至少一部分中赢得对SRFS频带的争用。 例如，无线帧周期可以包括多个子帧周期。 在无线电帧周期的第一子帧周期期间，设备还可以以第一发射功率发送第一信号，并且在无线电帧周期的第二子帧周期期间以第二发射功率发送第二信号。 例如，可以至少部分地基于为无线电帧周期确定的功率电平来控制第一发射功率和第二发射功率。

    BROADCAST CHANNEL REPETITION
    447.
    发明申请
    BROADCAST CHANNEL REPETITION 审中-公开
    广播频道重演

    公开(公告)号：US20170006578A1

    公开(公告)日：2017-01-05

    申请号：US15194045

    申请日：2016-06-27

    Applicant: QUALCOMM Incorporated

    Inventor： Alberto Rico Alvarino ,  Wanshi Chen ,  Hao Xu

    IPC: H04W72/00 ,  H04L1/00 ,  H04L5/00

    CPC classification number: H04W72/005 ,  H04L1/0038 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0053 ,  H04L27/2602

    Abstract: Methods, systems, and devices for wireless communication are described. A device may receive repeated portions (e.g., modulation symbols) of a physical broadcast channel (PBCH) within a subframe. Portions of a PBCH may be repeated during various symbol periods of a subframe, and symbol periods for repetition may be selected based at least in part on locations of reference signals, synchronization signals, or downlink transmissions. Symbol periods that include cell-specific reference signals (CRS) may be used to repeat portions of a PBCH. Modulation symbols of a PBCH that include both broadcast information and CRS may be repeated within a subframe during symbol periods of the subframe than include CRS. Repetitions of portions of the PBCH in the subsequent subframe may be similarly or differently mapped to available resources in the subsequent subframe. Devices may identify characteristics of the PBCH by using differences in phase between repeated portions of the PBCH.

    Abstract translation: 描述了用于无线通信的方法，系统和设备。 设备可以在子帧内接收物理广播信道（PBCH）的重复部分（例如，调制符号）。 可以在子帧的各种符号周期期间重复PBCH的部分，并且可以至少部分地基于参考信号，同步信号或下行链路传输的位置来选择用于重复的符号周期。 包括小区特定参考信号（CRS）的符号周期可以用于重复PBCH的部分。 包括广播信息和CRS的PBCH的调制符号可以在比包括CRS在子帧的符号周期期间在子帧内重复。 后续子帧中PBCH部分的重复可以类似地或不同地映射到后续子帧中的可用资源。 设备可以通过使用PBCH的重复部分之间的相位差来识别PBCH的特性。

    LOW LATENCY UNDER TIME DIVISION DUPLEX AND FLEXIBLE FREQUENCY DIVISION DUPLEX
    450.
    发明申请
    LOW LATENCY UNDER TIME DIVISION DUPLEX AND FLEXIBLE FREQUENCY DIVISION DUPLEX 审中-公开
    时分双工和柔性频分复用的低延迟

    公开(公告)号：US20160360550A1

    公开(公告)日：2016-12-08

    申请号：US15140322

    申请日：2016-04-27

    Applicant: QUALCOMM Incorporated

    Inventor： Wanshi Chen ,  Shimman Arvind Patel ,  Peter Gaal ,  Yongbin Wei ,  Hao Xu ,  Michael Mao Wang ,  Durga Prasad Malladi

    IPC: H04W72/12 ,  H04L5/00 ,  H04L5/14

    CPC classification number: H04W72/1294 ,  H04L5/0005 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0096 ,  H04L5/14 ,  H04L5/1469 ,  H04W72/1205

    Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may operate in a system that supports operation with transmission time intervals (TTIs) of different durations. The UE may monitor for a grant during a first TTI and may determine the communication direction of a second TTI based on a received grant. The UE may re-determine the communication direction of the second TTI based, for example, on an explicit indication. In some examples, the UE may adapt uplink scheduling timing based on the indicator. In some examples, a UE may communicate in one direction during a TTI of a first duration and may communicate in a different direction during a TTI of the second duration that is within the TTI of the first duration.

    Abstract translation: 描述了用于无线通信的方法，系统和设备。 用户设备（UE）可以在支持具有不同持续时间的传输时间间隔（TTI）的操作的系统中操作。 UE可以在第一TTI期间监视授权，并且可以基于接收到的授权确定第二TTI的通信方向。 UE可以例如基于显式指示来重新确定第二TTI的通信方向。 在一些示例中，UE可以基于指示符来适配上行链路调度定时。 在一些示例中，UE可以在第一持续时间的TTI期间在一个方向上进行通信，并且可以在处于第一持续时间的TTI内的第二持续时间的TTI期间以不同的方向进行通信。

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