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    Demodulation reference signal based channel state information feedback in OFDM-MIMO systems
    12.
    发明授权
    Demodulation reference signal based channel state information feedback in OFDM-MIMO systems 有权
    OFDM-MIMO系统中基于解调参考信号的信道状态信息反馈

    公开(公告)号：US09270495B2

    公开(公告)日：2016-02-23

    申请号：US14188233

    申请日：2014-02-24

    Applicant: InterDigital Patent Holdings, Inc.

    Inventor： Yingxue K. Li ,  Hongsan Sheng ,  Guodong Zhang ,  Philip J. Pietraski

    IPC: H04B1/38 ,  H04L25/02 ,  H04B7/04 ,  H04B7/06 ,  H04L5/00 ,  H04L25/03

    CPC classification number: H04L25/0226 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0639 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/005 ,  H04L5/0091 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/03343 ,  H04L25/03891 ,  H04L65/4076

    Abstract: A method and apparatus for using demodulation reference signal (DM-RS) based channel state information (CSI) feedback in Orthogonal Frequency Division Multiplexing-multiple-input multiple-output (OFDM-MIMO) systems is disclosed. The wireless transmit/receive unit (WTRU) receives one or more resource blocks from a base station, wherein the resource blocks (RBs) include demodulating reference signals (DM-RS) and precoder information. The precoder information is sent unicast or broadcasted over a common control channel. The WTRU estimates an effective channel estimate based on the DM-RS, derives an unprecoded channel based on the effective channel and the precoder information, generates CSI feedback based on the unprecoded channel, and transmits the CSI feedback to the base station. Alternatively, the WTRU estimates an effective channel estimate based on the DM-RS, quantizes the effective channel estimate and transmits the CSI feedback to the base station.

    Abstract translation: 公开了一种在正交频分复用多输入多输出（OFDM-MIMO）系统中使用基于解调参考信号（DM-RS）的信道状态信息（CSI）反馈的方法和装置。 无线发射/接收单元（WTRU）从基站接收一个或多个资源块，其中资源块（RB）包括解调参考信号（DM-RS）和预编码器信息。 预编码器信息通过公共控制信道单播或广播发送。 WTRU基于DM-RS估计有效信道估计，基于有效信道和预编码器信息导出未重新编码的信道，基于未重新编码的信道生成CSI反馈，并将CSI反馈发送到基站。 或者，WTRU基于DM-RS估计有效信道估计，量化有效信道估计并将CSI反馈发送到基站。

    METHOD AND APPARATUS FOR A MILLIMETER WAVE COMMUNICATION SYSTEM
    13.
    发明申请
    METHOD AND APPARATUS FOR A MILLIMETER WAVE COMMUNICATION SYSTEM 有权
    一种用于微波通信系统的方法和装置

    公开(公告)号：US20150004918A1

    公开(公告)日：2015-01-01

    申请号：US14363193

    申请日：2012-12-06

    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

    Inventor： Carl Wang ,  Yingxue K. Li ,  Onur Sahin ,  Philip J. Pietraski ,  Ravikumar V. Pragada ,  Gregg A. Charlton

    IPC: H04W40/12 ,  H04W88/02

    CPC classification number: H04W40/12 ,  H04W36/0055 ,  H04W36/14 ,  H04W48/12 ,  H04W48/16 ,  H04W88/02

    Abstract: Methods and apparatus for millimeter wave (mmW) beam acquisition are disclosed. An apparatus includes a transmitter configured to transmit millimeter wave (mmW) WTRU (mmW WTRU) information over a cellular system to a base station a receiver and a processor. The receiver receives a list of candidate mmW base stations (mB) including mmW acquisition start timing information from the base station, and the processor calculates correlation values around the received mmW acquisition start timing information for the mBs in the list.

    Abstract translation: 公开了毫米波（mmW）光束采集的方法和装置。 一种装置包括：发射机，被配置为通过蜂窝系统向基站发送毫米波（mmW）WTRU（mmW WTRU）信息的接收机和处理器。 接收机从基站接收包括mmW采集开始定时信息的候选mmW基站（mB）的列表，并且处理器计算列表中的mB的接收的mmW采集开始定时信息周围的相关值。

    METHOD AND APPARATUS FOR DATA-SPLITTING TRANSMISSION FROM MULTIPLE SITES
    14.
    发明申请
    METHOD AND APPARATUS FOR DATA-SPLITTING TRANSMISSION FROM MULTIPLE SITES 审中-公开
    用于从多个站点进行数据分割传输的方法和装置

    公开(公告)号：US20140198744A1

    公开(公告)日：2014-07-17

    申请号：US14118225

    申请日：2012-05-17

    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

    Inventor： Carl Wang ,  Yingxue K. Li ,  Kenneth P. Kearney ,  Philip J. Pietraski ,  Stephen E. Terry ,  Samian Kaur ,  Janet A. Stern-Berkowitz ,  Douglas R. Castor

    IPC: H04W52/26

    CPC classification number: H04W52/146 ,  H04B7/0617 ,  H04B7/0626 ,  H04L5/0073 ,  H04W52/267 ,  H04W52/325 ,  H04W52/38 ,  H04W72/0413 ,  H04W84/12

    Abstract: Methods and apparatus for changing cell range coverage are disclosed. The coverage may be changed on a per-sub-frame basis. An antenna beam elevation tilting angle may be adjusted to provide different effective downlink (DL) coverage. For example, a subframe may be a small tilt subframe or a large tilt subframe. A network or evolved NodeB (eNB) may determine data channel transmission power to adjust cell range per subframe. Low Power Subframe (LPS) may be used alone or with Almost Blank Subframe (ABS) to transmit data. Timing Advance (TA) handling for uplink (UL) transmissions is described. A common TA (CTA) may be determined for multi-site UL signaling. UL power control may be determined for UL transmission to multiple sites. Radio Link Monitoring (RLM) may be performed for multiple sites on a carrier frequency. A wireless transmit/receive unit (WTRU) may maintain synchronization in selected subframes for multiple cells.

    Abstract translation: 公开了改变单元范围覆盖的方法和装置。 可以在每个子帧的基础上改变覆盖。 可以调整天线波束仰角倾斜角度以提供不同的有效下行链路（DL）覆盖。 例如，子帧可以是小倾斜子帧或大倾斜子帧。 网络或演进的节点B（eNB）可以确定数据信道传输功率以调整每子帧的小区范围。 低功率子帧（LPS）可以单独使用或与几乎空白子帧（ABS）一起使用来传输数据。 描述了用于上行链路（UL）传输的定时提前（TA）处理。 可以为多站点UL信令确定公共TA（CTA）。 UL功率控制可以被确定用于UL传输到多个站点。 可以对载波频率上的多个站点执行无线电链路监视（RLM）。 无线发射/接收单元（WTRU）可以在多个小区的选定子帧中保持同步。

    METHOD AND APPARATUS FOR A MILLIMETER WAVE COMMUNICATION SYSTEM
    15.
    发明申请
    METHOD AND APPARATUS FOR A MILLIMETER WAVE COMMUNICATION SYSTEM 有权

    公开(公告)号：US20240414622A1

    公开(公告)日：2024-12-12

    申请号：US18812681

    申请日：2024-08-22

    Applicant: InterDigital Patent Holdings, Inc.

    Inventor： Carl Wang ,  Yingxue K. Li ,  Onur Sahin ,  Philip J. Pietraski ,  Ravikumar V. Pragada ,  Gregg A. Charlton

    IPC: H04W40/12 ,  H04W36/00 ,  H04W36/14 ,  H04W48/12 ,  H04W48/16 ,  H04W88/02

    Abstract: Methods and apparatuses are provided herein. A method may include receiving, from a first network node, configuration information to establish a link to a second network node. The first network node may use a first radio access technology (RAT) and the second network node may use a second RAT. The configuration information may include timing information associated with a first one of a plurality of beams of the second network node. The method may include measuring the first one of the plurality of beams of the second network node based on the timing information. The method may include selecting a beam of the plurality of beams of the second network node based on the measurement. The method may include sending a transmission to at least the first network node. The transmission may be an indication the WTRU is configured to establish the link to the second network node.

    OPEN LOOP SPATIAL PROCESSING
    19.
    发明申请
    OPEN LOOP SPATIAL PROCESSING 审中-公开
    开环空间处理

    公开(公告)号：US20160301454A1

    公开(公告)日：2016-10-13

    申请号：US15094876

    申请日：2016-04-08

    Applicant: InterDigital Patent Holdings, Inc.

    Inventor： Shahrokh Nayeb Nazar ,  Robert L. Olesen ,  Manasa Raghavan ,  Muhammad U. Fazili ,  William E. Lawton ,  Yingxue K. Li

    IPC: H04B7/04 ,  H04B7/06 ,  H04L25/03 ,  H04B7/02 ,  H04L25/02

    CPC classification number: H04B7/0456 ,  H04B7/022 ,  H04B7/0626 ,  H04L25/0206 ,  H04L25/03343 ,  H04L2025/03426

    Abstract: Methods and apparatus for multiple-input multiple-output (MIMO) transmissions are disclosed. A base station may precode wireless transmit/receive unit (WTRU)-specific reference signals and data that are transmitted to a WTRU using a randomly selected precoder. The precoder may be selected based on a predefined precoder selection sequence or by the base station. A different precoder may be applied to different resource blocks (RBs). In addition, a large delay cyclic delay diversity (CDD) or discrete Fourier transform (DFT) spreading may be applied on the WTRU-specific reference signals and the data. For heterogeneous deployed antennas, spatial diversity gain is achieved by dynamically scheduling resources between transmission points. A hopping scheme may be applied across the transmission points as the resources are dynamically partitioned between the transmission points. A different randomly selected precoder may be applied to each RB transmitted from a different transmission point.

    Abstract translation: 公开了用于多输入多输出（MIMO）传输的方法和装置。 基站可以使用随机选择的预编码器对无线发射/接收单元（WTRU）特定的参考信号和数据进行预编码，所述参考信号和数据被发送到WTRU。 可以基于预定义的预编码器选择序列或基站来选择预编码器。 不同的预编码器可以应用于不同的资源块（RB）。 此外，可以对WTRU特定的参考信号和数据应用大的延迟循环延迟分集（CDD）或离散傅立叶变换（DFT）扩展。 对于异构部署的天线，通过在传输点之间动态调度资源来实现空间分集增益。 当资源在传输点之间动态分配时，可以跨传输点应用跳频方案。 可以将不同的随机选择的预编码器应用于从不同传输点发送的每个RB。

    METHOD AND APPARATUS FOR DATA-SPLITTING TRANSMISSION FROM MULTIPLE SITES
    20.
    发明申请
    METHOD AND APPARATUS FOR DATA-SPLITTING TRANSMISSION FROM MULTIPLE SITES 审中-公开
    用于从多个站点进行数据分割传输的方法和装置

    公开(公告)号：US20160255590A1

    公开(公告)日：2016-09-01

    申请号：US15148677

    申请日：2016-05-06

    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

    Inventor： Carl Wang ,  Yingxue K. Li ,  Kenneth Kearney ,  Philip J. Pietraski ,  Stephen E. Terry ,  Samian Kaur ,  Janet A. Stern-Berkowitz ,  Douglas R. Castor

    IPC: H04W52/14 ,  H04W72/04

    CPC classification number: H04W52/146 ,  H04B7/0617 ,  H04B7/0626 ,  H04L5/0073 ,  H04W52/267 ,  H04W52/325 ,  H04W52/38 ,  H04W72/0413 ,  H04W84/12

    Abstract: Methods and apparatus for changing cell range coverage are disclosed. A wireless transmit/receive unit (WTRU) may include circuitry configured to transmit subframes of radio frames using a physical uplink shared channel (PUSCH), where the subframes are divided into first and second sets. The circuitry may include a first power control loop utilized for the first set of subframes and a second power control loop utilized for the second set of subframes. The first power control loop may set transmission power levels for transmission over the PUSCH for the first set of subframes, and the second power control loop may set transmission power levels for transmission over the PUSCH for the second set of subframes. The circuitry may be configured with a first physical uplink control channel (PUCCH) for a first eNodeB and a second PUCCH for a second eNodeB to simultaneously communicate with the first and the second eNodeBs.

    Abstract translation: 公开了改变单元范围覆盖的方法和装置。 无线发射/接收单元（WTRU）可以包括被配置为使用物理上行链路共享信道（PUSCH）发送无线电帧的子帧的电路，其中子帧被划分为第一和第二组。 电路可以包括用于第一组子帧的第一功率控制回路和用于第二组子帧的第二功率控制回路。 第一功率控制环路可以设置用于第一组子帧的PUSCH上的传输的发射功率电平，并且第二功率控制环路可以设置用于第二组子帧的PUSCH上的传输的发射功率电平。 电路可以配置有用于第一eNodeB的第一物理上行链路控制信道（PUCCH）和用于第二eNodeB的第二PUCCH，以同时与第一和第二eNodeB进行通信。

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