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    User equipment reference signal-based timing estimation
    11.
    发明授权
    User equipment reference signal-based timing estimation 有权
    用户设备参考信号定时估计

    公开(公告)号：US09014114B2

    公开(公告)日：2015-04-21

    申请号：US13678332

    申请日：2012-11-15

    Applicant: QUALCOMM Incorporated

    Inventor： Yi Huang ,  Tao Luo ,  Taesang Yoo ,  Xiliang Luo

    IPC: H04W4/00 ,  H04L12/66 ,  H04W72/00 ,  H04W72/04 ,  H04L27/26 ,  H04L5/00

    CPC classification number: H04W72/04 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/0073 ,  H04L27/2655 ,  H04L27/2662 ,  H04L27/2672 ,  H04L27/2675

    Abstract: Estimation of timing errors is disclosed that uses user equipment reference signals (UERSs). A UE models each channel in a user equipment reference signal (UERS) as a channel on an adjacent UERS tone multiplied by a phase ramping term. This phase ramping term is determined using an estimator on the modeled channels. The UE then determines the equivalent timing error by mapping the phase ramping terms into the estimated timing errors in the time domain. In coordinated multipoint (CoMP) systems, the UERS-based timing error may be used to identify an aligned common reference signal (CRS) associated with the network entity transmitting the data. With this determination, the UE may estimate a CRS-based timing error and either substitute the CRS-based timing error for the UERS-based timing error or calculate a further average timing error based on both the CRS-based and UERS-based timing errors.

    Abstract translation: 公开了使用用户设备参考信号（UERS）的定时误差的估计。 UE将用户设备参考信号（UERS）中的每个信道建模为在相邻UERS音调乘以相位斜变项的信道。 该相位斜变项是使用建模通道上的估计器确定的。 然后，UE通过将相位斜变项映射到时域中的估计定时误差来确定等效定时误差。 在协调多点（CoMP）系统中，基于UERS的定时误差可以用于识别与发送数据的网络实体相关联的对准的公共参考信号（CRS）。 通过该确定，UE可以估计基于CRS的定时误差，并且基于用于基于UERS的定时误差替代基于CRS的定时误差，或者基于基于CRS和基于UERS的定时误差来计算另外的平均定时误差 。

    ACK/NACK transmission for multi-carrier operation
    16.
    发明授权
    ACK/NACK transmission for multi-carrier operation 有权
    用于多载波操作的ACK / NACK传输

    公开(公告)号：US09591662B2

    公开(公告)日：2017-03-07

    申请号：US14792283

    申请日：2015-07-06

    Applicant: QUALCOMM Incorporated

    Inventor： Wanshi Chen ,  Xiaoxia Zhang ,  Peter Gaal ,  Juan Montojo ,  Xiliang Luo ,  Tao Luo ,  Jelena Damnjanovic ,  Aleksandar Damnjanovic

    IPC: H04W72/04 ,  H04W72/12 ,  H04L1/18 ,  H04W52/32 ,  H04W52/42 ,  H04B7/06 ,  H04L5/00 ,  H04W52/34

    CPC classification number: H04W72/1284 ,  H04B7/0632 ,  H04L1/1861 ,  H04L5/0055 ,  H04W52/325 ,  H04W52/34 ,  H04W52/42

    Abstract: Techniques for acknowledging data transmissions in a multi-carrier wireless communication network are disclosed. In some aspects, a user equipment (UE) receives a data transmission on at least one component carrier (CC) in a plurality of configured CCs. The UE determines acknowledgement/negative acknowledgement (ACK/NACK) information for the data transmission and determines an uplink channel for sending the ACK/NACK information. When the ACK/NACK information is sent on a PUCCH, the UE may perform power control based on which CCs in the plurality of configured CCs data is received. When the ACK/NACK information is sent on a PUSCH, the UE may determine a number of resource elements based on its CC configuration.

    Abstract translation: 公开了一种在多载波无线通信网络中确认数据传输的技术。 在一些方面，用户设备（UE）在多个配置的CC中的至少一个分量载波（CC）上接收数据传输。 UE确定用于数据传输的确认/否定确认（ACK / NACK）信息，并确定用于发送ACK / NACK信息的上行链路信道。 当在PUCCH上发送ACK / NACK信息时，UE可以基于接收到多个配置的CC中的哪个CC来执行功率控制。 当在PUSCH上发送ACK / NACK信息时，UE可以基于其CC配置来确定多个资源元素。

    MULTIPLEXING DEMODULATION REFERENCE SIGNALS IN WIRELESS COMMUNICATIONS
    17.
    发明申请
    MULTIPLEXING DEMODULATION REFERENCE SIGNALS IN WIRELESS COMMUNICATIONS 有权
    无线通信中的多路复用解调参考信号

    公开(公告)号：US20160156445A1

    公开(公告)日：2016-06-02

    申请号：US15018412

    申请日：2016-02-08

    Applicant: QUALCOMM Incorporated

    Inventor： Xiliang Luo ,  Wanshi Chen ,  Xiaoxia Zhang ,  Peter Gaal ,  Juan Montojo

    IPC: H04L5/00 ,  H04B7/04

    CPC classification number: H04L5/0051 ,  H04B7/0413 ,  H04J13/004 ,  H04J13/0074 ,  H04L5/0007 ,  H04L5/0023 ,  H04L27/2613

    Abstract: Methods and apparatuses are provided for determining cyclic shift (CS) values and/or orthogonal cover codes (OCC) for a plurality of demodulation reference signals (DM-RS) transmitted over multiple layers in multiple-input multiple-output (MIMO) communications. A CS index can be received from a base station in downlink control information (DCI) or similar signaling. Based at least in part on the CS index, CS values for the plurality of DM-RS can be determined. In addition, OCC can be explicitly signaled or similarly determined from the CS index and/or a configured CS value received from a higher layer. In addition, controlling assignment of CS indices and/or OCC can facilitate providing orthogonality for communications from paired devices in multiuser MIMO.

    Abstract translation: 提供了用于确定在多输入多输出（MIMO）通信中通过多层传输的多个解调参考信号（DM-RS）的循环移位（CS）值和/或正交覆盖码（OCC）的方法和装置。 可以在下行链路控制信息（DCI）或类似信令中从基站接收CS索引。 至少部分地基于CS索引，可以确定多个DM-RS的CS值。 另外，可以从CS索引和/或从较高层接收到的配置的CS值明确地发信号或类似地确定OCC。 此外，控制CS索引和/或OCC的分配可以有助于在多用户MIMO中为来自配对设备的通信提供正交性。

    OPEN LOOP MIMO MODE FOR LTE-A UPLINK
    18.
    发明申请
    OPEN LOOP MIMO MODE FOR LTE-A UPLINK 有权
    用于LTE-A上行链路的开环MIMO模式

    公开(公告)号：US20150195065A1

    公开(公告)日：2015-07-09

    申请号：US14661978

    申请日：2015-03-18

    Applicant: QUALCOMM Incorporated

    Inventor： Xiliang Luo ,  Peter Gaal ,  Juan Montojo ,  Wanshi Chen ,  Hao Xu ,  Tao Luo ,  Kapil Bhattad

    IPC: H04L5/00 ,  H04W72/04 ,  H04B7/04

    CPC classification number: H04L5/0023 ,  H04B7/0413 ,  H04B7/0456 ,  H04B7/0486 ,  H04L1/0031 ,  H04L1/1896 ,  H04L5/0053 ,  H04L5/0091 ,  H04L25/03343 ,  H04L25/03891 ,  H04W72/042

    Abstract: A precoding scheme to accommodate user equipment (UEs) having higher Doppler speeds. In such transmission schemes, a different precoding matrix is applied to each orthogonal frequency division multiplex (OFDM) symbol in the transmission stream. Additionally, a downlink control message format is defined to handle assignment of multiple different transmission schemes using the same message format. The downlink control message format includes a control element in one of the message fields along with a set of parameters specifically applicable to the assigned transmission scheme. Based on the value of this control element, the UE sets the specific transmission scheme and determines a set of interpretation rules uniquely associated with that transmission scheme. Using the interpretation rules, the UE is able to read the set of parameters as applied to the selected transmission scheme.

    Abstract translation: 一种用于适应具有更高多普勒速度的用户设备（UE）的预编码方案。 在这种传输方案中，将不同的预编码矩阵应用于传输流中的每个正交频分复用（OFDM）符号。 另外，下行链路控制消息格式被定义为使用相同的消息格式来处理多个不同传输方案的分配。 下行链路控制消息格式包括在消息字段之一中的控制元素以及特定适用于所分配的传输方案的一组参数。 基于该控制元件的值，UE设置特定的传输方案并且确定与该传输方案唯一相关联的一组解释规则。 使用解释规则，UE能够读取应用于所选传输方案的一组参数。

    DRX WAKEUP RULE IN AN EICIC ENVIRONMENT
    19.
    发明申请
    DRX WAKEUP RULE IN AN EICIC ENVIRONMENT 有权
    非法环境中的DRX唤醒规则

    公开(公告)号：US20150181641A1

    公开(公告)日：2015-06-25

    申请号：US14139803

    申请日：2013-12-23

    Applicant: QUALCOMM Incorporated

    Inventor： Amir Farajidana ,  Xiliang Luo ,  Alexei Yurievitch Gorokhov ,  Hisham A. Mahmoud ,  Keith William Saints

    IPC: H04W76/04 ,  H04W24/08

    CPC classification number: H04W76/048 ,  H04W24/08 ,  H04W52/0216 ,  H04W76/28 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/24

    Abstract: Methods, systems, and devices are described for a UE to determine a DRX wakeup rule in an eICIC environment. A UE may identify a measurement period associated with reduced interference from one or more cells in a wireless communications network. The cells may be a serving cell or a neighbor cell. The measurement period may be identified based on eICIC data available to the UE. The eICIC data may be sent to the UE by a serving cell and/or determined by the UE. The UE may power up a wireless modem to perform a warm-up measurement of the serving cell during the identified measurement period prior to transitioning the UE to a DRX on state.

    Abstract translation: 描述了用于UE在eICIC环境中确定DRX唤醒规则的方法，系统和设备。 UE可以识别与无线通信网络中的一个或多个小区的减少的干扰相关联的测量周期。 小区可以是服务小区或邻居小区。 可以基于UE可用的eICIC数据来识别测量周期。 eICIC数据可以由服务小区发送给UE，和/或由UE确定。 在将UE转换到DRX打开状态之前，UE可以在识别的测量周期期间为无线调制解调器上电以执行服务小区的预热测量。

    Sub-band dependent resource management
    20.
    发明申请
    Sub-band dependent resource management 有权
    子带相关资源管理

    公开(公告)号：US20150131585A1

    公开(公告)日：2015-05-14

    申请号：US14594550

    申请日：2015-01-12

    Applicant: QUALCOMM Incorporated

    Inventor： Wanshi Chen ,  Xiaoxia Zhang ,  Durga Prasad Malladi ,  Xiliang Luo

    IPC: H04W72/04

    CPC classification number: H04W72/0486 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0092 ,  H04W52/248 ,  H04W52/34

    Abstract: A system and method for facilitating resource management in OFDM systems is provided. The system permits different and flexible resource cell metric operations levels (e.g. uplink load management, admission control, congestion control, signal handoff control) for different sub-bands. For the uplink load management, there are multiple distinct load operation points (e.g. IoT, RoT) per sub-band group instead of the same operation level across the entire available band. The sub-band groups encompass the entire band. The facilitation system also comprises a variety of transmitting protocols, command increment variable stepsize methods and robust command response methods. The system thus provides more flexible reverse link resource management and more efficient utilization of the bandwidth.

    Abstract translation: 提供了一种用于促进OFDM系统中的资源管理的系统和方法。 该系统允许针对不同子带的不同且灵活的资源小区度量操作级别（例如，上行链路负载管理，准入控制，拥塞控制，信号切换控制）。 对于上行链路负载管理，每个子带组存在多个不同的负载操作点（例如，IoT，RoT），而不是跨整个可用频带的相同操作级别。 子带组包含整个频带。 促进系统还包括各种传输协议，命令增量可变步长方法和鲁棒的命令响应方法。 因此，该系统提供更灵活的反向链路资源管理和带宽的更有效利用。

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