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213 条记录 (耗时 0.021 秒)

    Multi-hop communications with user equipment (UE) cooperation
    32.
    发明授权
    Multi-hop communications with user equipment (UE) cooperation 有权

    公开(公告)号：US12063625B2

    公开(公告)日：2024-08-13

    申请号：US17407872

    申请日：2021-08-20

    申请人： Hua Xu ,  Jianglei Ma

    发明人： Hua Xu ,  Jianglei Ma

    IPC分类号： H04W72/02 ,  H04L1/1812 ,  H04W72/0446 ,  H04W88/04

    CPC分类号： H04W72/02 ,  H04L1/1819 ,  H04W72/0446 ,  H04W88/04

    摘要： Signaling for allocating communication resources is communicated in a wireless communication network. The signaling is for allocating the communication resources in a first time duration and a second time duration for relaying data, in respective hops of a multi-hop relay between first and second end nodes, by user equipment (UE) including one or more relay UEs at each hop for example. Such relaying of data in the respective hops involves relaying the data in a first hop of the multi-hop relay and in a second hop of the multi-hop relay between the first end node and the second end node. The communication resources in the first time duration are allocated for relaying the data in the first hop of the multi-hop relay and the communication resources in the second time duration are allocated for relaying the data in the second hop of the multi-hop relay.

    Methods, apparatus, and systems for fast path switching in wireless communications with user equipment (UE) cooperation
    33.
    发明授权
    Methods, apparatus, and systems for fast path switching in wireless communications with user equipment (UE) cooperation 有权

    公开(公告)号：US11849382B2

    公开(公告)日：2023-12-19

    申请号：US17316903

    申请日：2021-05-11

    申请人： Hua Xu ,  Jianglei Ma

    发明人： Hua Xu ,  Jianglei Ma

    IPC分类号： H04W40/24 ,  H04W76/14 ,  H04W76/15 ,  H04W40/12

    CPC分类号： H04W40/248 ,  H04W40/12 ,  H04W76/14 ,  H04W76/15

    摘要： Multiple communication paths are established for communications between a User Equipment (UE) and a wireless communication network, before switching between those paths is initiated. Signaling that includes an explicit indication that the UE is to switch between the multiple communication paths is transmitted to and received by at least the UE for which the multiple communication paths were established. Responsive to the explicit indication, communications are switched between the communication paths. At least one of the communication paths includes a relay path between the UE and the wireless communication network through another UE. Establishment of the multiple paths in advance of the switching may be useful in enabling fast switching with low latency and/or no traffic loss.

    Signaling and channel estimation for uplink transmit diversity
    34.
    发明授权
    Signaling and channel estimation for uplink transmit diversity 有权
    用于上行链路传输分集的信令和信道估计

    公开(公告)号：US08982997B2

    公开(公告)日：2015-03-17

    申请号：US13394888

    申请日：2010-09-21

    申请人： Ming Jia ,  Masoud Ebrahimi Tazeh Mahalleh ,  Mohammadhaadi Baligh ,  Hua Xu ,  Jianglei Ma ,  Amir Khandani

    发明人： Ming Jia ,  Masoud Ebrahimi Tazeh Mahalleh ,  Mohammadhaadi Baligh ,  Hua Xu ,  Jianglei Ma ,  Amir Khandani

    IPC分类号： H04L27/00 ,  H04B7/06 ,  H04L27/26

    CPC分类号： H04B7/0667 ,  H04B7/0669 ,  H04B7/0671 ,  H04L1/0625 ,  H04L27/2601

    摘要： In a method of transmitting a data stream from a transmitter in a multiple-input-multiple-output (MIMO) wireless communication system, where the transmitter comprises a plurality of transmit antennas, a discrete Fourier transform (DFT) is applied to the data stream to generate a plurality of symbol sequences; symbols of a first symbol sequence from the plurality of symbol sequences are paired with symbols of a second symbol sequence from the plurality of symbol sequences to generate a plurality of symbol pairs, wherein the pairing results in an orphan symbol; a space-time block code (STBC) is applied to the symbol pairs to generate a plurality of sets of STBC symbols, each set of STBC symbols being associated with a corresponding one of the plurality of antennas; a cyclic delay diversity (CDD) operation is applied to the orphan symbol to generate a plurality of CDD symbols, each CDD symbol being associated with a corresponding one of the plurality of antennas; and each one of the antennas transmits the corresponding set of STBC symbols and the corresponding CDD symbol.

    摘要翻译： 在多输入多输出（MIMO）无线通信系统中的发射机发送数据流的方法中，其中发射机包括多个发射天线，将离散傅立叶变换（DFT）应用于数据流 以产生多个符号序列; 来自多个符号序列的第一符号序列的符号与来自多个符号序列的第二符号序列的符号配对，以产生多个符号对，其中所述配对导致孤立符号; 将空时块码（STBC）应用于符号对以产生多组STBC符号，每组STBC符号与多个天线中的相应一个天线相关联; 循环延迟分集（CDD）操作被应用于孤立符号以产生多个CDD符号，每个CDD符号与多个天线中的相应一个天线相关联; 并且每个天线发送相应的一组STBC符号和相应的CDD符号。

    MULTI-SITE MIMO COOPERATION IN CELLULAR NETWORKS
    36.
    发明申请
    MULTI-SITE MIMO COOPERATION IN CELLULAR NETWORKS 审中-公开
    细胞网络中的多场MIMO协同工作

    公开(公告)号：US20150003431A9

    公开(公告)日：2015-01-01

    申请号：US12887004

    申请日：2010-09-21

    申请人： Mohammadhadi Baligh ,  Jianglei Ma ,  Hua Xu

    发明人： Mohammadhadi Baligh ,  Jianglei Ma ,  Hua Xu

    IPC分类号： H04B7/212

    CPC分类号： H04B7/024 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/0689 ,  H04B7/12 ,  H04L1/0026 ,  H04L1/0071 ,  H04L1/0625 ,  H04L1/0656 ,  H04L1/0668 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/003 ,  H04L5/0035 ,  H04W72/1231

    摘要： A method of serving a given data stream to a target mobile terminal, in a cellular communications network that includes a plurality of transmitting sites wherein each transmitting site including at least one antenna, is provided. The method includes designating at least two of the plurality of transmitting sites as cooperating sites; assigning tones to each transmitting site from a sub-band associated with the cooperating sites; dividing the data stream into at least two sub-data streams, each of the sub-data streams for transmission over selected tones; and interlacing tones of the cooperating sites in accordance with a selected one of a time switching and a frequency switching transmit diversity technique. Other techniques for multi-site MIMO cooperation are also provided.

    摘要翻译： 一种在包括多个发送站点的蜂窝通信网络中向目标移动终端提供给定数据流的方法，其中提供了包括至少一个天线的每个发送站点。 该方法包括将多个发送站点中的至少两个指定为协作站点; 从与合作站点相关联的子带向每个发送站点分配音调; 将数据流划分为至少两个子数据流，用于在所选音调上传输的每个子数据流; 以及根据时间切换和频率切换发射分集技术中选择的一个来协作的场所的交织音调。 还提供了用于多站点MIMO协作的其他技术。

    COMMUNICATION SYSTEMS AND METHODS
    38.
    发明申请
    COMMUNICATION SYSTEMS AND METHODS 有权
    通信系统与方法

    公开(公告)号：US20130039388A1

    公开(公告)日：2013-02-14

    申请号：US13556363

    申请日：2012-07-24

    申请人： Hua Xu ,  Jianglei Ma ,  Ming Jia

    发明人： Hua Xu ,  Jianglei Ma ,  Ming Jia

    IPC分类号： H04B1/707

    CPC分类号： H04B7/0669 ,  H04L1/0073 ,  H04L1/0668 ,  H04L1/1607 ,  H04L1/1861 ,  H04L5/0055 ,  H04W52/42 ,  H04W72/1263 ,  H04W72/1278

    摘要： In accordance with embodiments, a communication system includes a first device and a second device in communication with the first device. The second device has at least a first pair and a second pair of antennas. The second device spreads a communication bit by a predetermined spreading factor and forms a first set of spatial block codes in frequency domain based on the spread communication bit. The first set of spatial block codes being consecutively transmitted on one of the first and second pairs of antennas.

    摘要翻译： 根据实施例，通信系统包括与第一设备通信的第一设备和第二设备。 第二装置具有至少第一对和第二对天线。 第二设备以预定的扩展因子扩展通信位，并且基于扩展通信位在频域中形成第一组空间块码。 第一组空间块码在第一和第二对天线之一上连续发射。

    Adaptive two-dimensional channel interpolation
    40.
    发明授权
    Adaptive two-dimensional channel interpolation 有权
    自适应二维信道插值

    公开(公告)号：US08331465B2

    公开(公告)日：2012-12-11

    申请号：US12064566

    申请日：2006-08-22

    申请人： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Dong-Sheng Yu ,  Hang Zhang

    发明人： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Dong-Sheng Yu ,  Hang Zhang

    IPC分类号： H04K1/10

    CPC分类号： H04L27/2611 ,  H04B7/06 ,  H04B7/08 ,  H04L5/0007 ,  H04L5/0023 ,  H04L25/0226 ,  H04L25/0232 ,  H04L27/2626 ,  H04L27/2647

    摘要： A method and apparatus for improving channel estimation within an OFDM communication system. Channel estimation in OFDM is usually performed with the aid of pilot symbols. The pilot symbols are typically spaced in time and frequency. The set of frequencies and times at which pilot symbols are inserted is referred to as a pilot pattern. In some cases, the pilot pattern is a diagonal-shaped lattice, either regular or irregular. The method first interpolates in the direction of larger coherence (time or frequency). Using these measurements, the density of pilot symbols in the direction of faster change will be increased thereby improving channel estimation without increasing overhead. As such, the results of the first interpolating step can then be used to assist the interpolation in the dimension of smaller coherence (time or frequency).

    摘要翻译： 一种用于改善OFDM通信系统内的信道估计的方法和装置。 OFDM中的信道估计通常借助于导频符号来执行。 导频符号通常在时间和频率上间隔开。 将导频符号插入的频率和时间的集合称为导频模式。 在一些情况下，导频图案是对角线形格子，规则的或不规则的。 该方法首先在较大相干性（时间或频率）的方向内插。 使用这些测量，导频符号在更快变化方向上的密度将增加，从而改善信道估计而不增加开销。 因此，第一内插步骤的结果然后可以用于辅助尺寸较小的相干性（时间或频率）的内插。