TECHNIQUES FOR MANAGING CELL IDENTIFIERS AND OTHER PARAMETERS FOR FLEXIBLE DUPLEX OPERATIONS

    公开(公告)号:US20180316452A1

    公开(公告)日:2018-11-01

    申请号:US15763500

    申请日:2016-08-22

    摘要: Techniques are described for wireless communications at a user equipment (UE). One method includes determining a first cell identifier (ID) associated with a first downlink transmission in a first radio frequency spectrum band of paired radio frequency spectrum bands, determining a second cell ID associated with a second downlink transmission in a second radio frequency spectrum band of the paired radio frequency spectrum bands, and communicating based on the first cell ID and the second cell ID. In some cases, the method may include determining a cell ID associated with a downlink transmission in an uplink radio frequency spectrum band, and receiving the downlink transmission in a subframe of the uplink radio frequency spectrum band. The downlink transmission may be based on the cell ID and a format of a physical uplink shared channel (PUSCH), and may include an eight layer single-user multiple-input multiple-output (SU-MIMO) transmission.

    CHANNEL COVARIANCE FEEDBACK FOR ENHANCED FD-MIMO

    公开(公告)号:US20190058560A1

    公开(公告)日:2019-02-21

    申请号:US16078434

    申请日:2017-02-17

    摘要: Channel covariance feedback is disclosed for enhanced full-dimension multiple input, multiple output (eFD-MIMO) systems. Channel state information (CSI) reference signal (CSI-RS) feedback operations are implemented using spatial covariance feedback of a covariance estimate. After obtaining a set of orthogonal basis vectors, a user equipment (UE) measures the CSI-RS from a base station and determines the spatial covariance matrix from the signal. The UE may then compress the spatial covariance matrix into a lower-dimension covariance estimate matrix using the orthogonal basis vectors. The lower-dimension matrix along with element-wise quantization allows for feedback of spatial covariance for eFD-MIMO systems without excessive feedback overhead.

    MANAGING RESOURCES FOR COOPERATIVE UPLINK TRANSMISSION

    公开(公告)号:US20170318586A1

    公开(公告)日:2017-11-02

    申请号:US15521520

    申请日:2015-07-03

    IPC分类号: H04W72/04

    摘要: Certain aspects of the present disclosure relate to techniques for managing resources for cooperative uplink transmission. A base station may determine different groups for a plurality of user equipments (UEs) participating in cooperative uplink transmission, and transmit mode configurations indicating whether or not UEs in each group are configured to transmit data as a data source or to relay data received from another UE configured to transmit data as a data source. A UE may participate, with one or more other UEs, in cooperative uplink transmission to the base station, wherein each UE belongs to a group. The UE may determine, for a transmission time interval (TTI), at least one operation to perform for the cooperative uplink transmission based, at least in part, on a group number of a group to which the UE belongs and an index of the TTI.

    LINEAR PRECODING IN FULL-DIMENSIONAL MIMO SYSTEMS AND DYNAMIC VERTICAL SECTORIZATION
    6.
    发明申请
    LINEAR PRECODING IN FULL-DIMENSIONAL MIMO SYSTEMS AND DYNAMIC VERTICAL SECTORIZATION 审中-公开
    全尺寸MIMO系统中的线性预测和动态垂直分割

    公开(公告)号:US20160065282A1

    公开(公告)日:2016-03-03

    申请号:US14786854

    申请日:2014-05-28

    IPC分类号: H04B7/04 H04W16/10 H04L1/00

    摘要: Certain aspects of the present disclosure provide methods and apparatus for linear precoding in full-dimensional MIMO (FD-MIMO) systems. According to aspects, an eNB may compress a larger number of antenna elements to a smaller number of antenna ports. The eNB may use a port precoding matrix to transmit reference signals to a UE, receive feedback regarding CSI based on the reference signals, and transmit data to the UE, based on a mapping of multiple data layers and mapping of antenna ports to the physical antenna elements. Further, aspects include performing elevation beamforming by dynamically forming one or more vertical sectors based on UE feedback in the elevation domain.

    摘要翻译: 本公开的某些方面提供了在全维MIMO(FD-MIMO)系统中用于线性预编码的方法和装置。 根据方面,eNB可以将较大数量的天线元件压缩到较少数量的天线端口。 eNB可以使用端口预编码矩阵来向UE发送参考信号,基于参考信号接收关于CSI的反馈,并且基于多个数据层的映射以及将天线端口映射到物理天线来向UE发送数据 元素。 此外,方面包括通过基于仰角域中的UE反馈动态地形成一个或多个垂直扇区来执行提升波束成形。

    TECHNIQUES FOR A HYBRID AUTOMATIC REPEAT REQUEST (HARQ) MECHANISM WITH POLAR CODES

    公开(公告)号:US20190123860A1

    公开(公告)日:2019-04-25

    申请号:US16091081

    申请日:2017-03-03

    摘要: The present disclosure describes a method, an apparatus, and a computer readable medium for hybrid automatic repeat request (HARQ) transmissions. For example, the method may include generating a first codeword for a first information block, wherein the first codeword is a first polar code, and wherein the first information block includes cyclic redundancy check (CRC) bits; transmitting the first codeword to a receiver; determining that the first polar code is not successfully decoded at the receiver based at least on a first message received from the receiver; generating a second codeword for a second information block, wherein the second codeword is a first enhanced polar code, and wherein the second information block does not include any CRC bits; transmitting the second codeword to the receiver; and determining that the second codeword and the first codeword are successfully decoded at the receiver based at least on a second message received from the receiver.

    METHOD AND APPARATUS FOR UTILIZING A RECONFIGURATION TIMER FOR UPDATING TDD CONFIGURATION
    10.
    发明申请
    METHOD AND APPARATUS FOR UTILIZING A RECONFIGURATION TIMER FOR UPDATING TDD CONFIGURATION 有权
    用于重新配置TDD配置的重新定时器的方法和装置

    公开(公告)号:US20150318974A1

    公开(公告)日:2015-11-05

    申请号:US14164907

    申请日:2013-01-28

    摘要: 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.

    摘要翻译: 在一方面,提供了用于利用重新配置定时器来更新TDD配置的方法和装置。 本公开的某些方面提出了在时分双工(TDD)系统中使用自适应上行链路 - 下行链路重新配置的同时提高系统性能的方法和装置。 对于某些方面,重配置定时器可以与信令方案一起使用,以便以最小的信令开销来享受自适应上行链路 - 下行链路重配置的优点。