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    • 51. 发明授权
    • MIMO beamforming-based single carrier frequency division multiple access system
    • 基于MIMO波束成形的单载波频分多址系统
    • US08553521B2
    • 2013-10-08
    • US12377975
    • 2006-09-25
    • Guodong ZhangJung-Lin PanRobert Lind OlesenYingming Tsai
    • Guodong ZhangJung-Lin PanRobert Lind OlesenYingming Tsai
    • H04J11/00
    • H04B7/0417H04B7/0617H04B7/086H04L5/023H04L25/0248H04L27/2601H04L27/2614H04L27/2647
    • A multiple-input multiple-output (MIMO) beamforming-based single carrier frequency division multiple access (SC-FDMA) system is disclosed. At the transmitter, a fast Fourier transform (FFT) is performed on transmission data to generate frequency domain data. The frequency domain transmit data is mapped to assigned subcarriers. An inverse fast Fourier transform (IFFT) is performed on the transmit data mapped to the assigned subcarriers to generate time domain transmit data. The time domain transmit data is transmitted via antennas. At a receiver, an FFT is performed on the received data to generate frequency domain received data. Subcarrier demapping is performed to extract data mapped on the assigned subcarriers. A channel estimator generates a channel matrix which is decomposed into U, D and VH matrices. A channel distortion and interference between transmit and receive antennas are equalized based on the decomposed channel matrices to the extracted frequency domain received data.
    • 公开了一种基于多输入多输出(MIMO)波束成形的单载波频分多址(SC-FDMA)系统。 在发射机上,对传输数据进行快速傅里叶变换(FFT)以产生频域数据。 频域发射数据被映射到分配的子载波。 对映射到所分配的子载波的发送数据执行快速傅里叶逆变换(IFFT),以生成时域发送数据。 时域发送数据通过天线发送。 在接收机处,对接收到的数据执行FFT以产生频域接收的数据。 执行子载波解映射以提取映射在所分配的子载波上的数据。 信道估计器生成分解为U,D和VH矩阵的信道矩阵。 基于分解的信道矩阵到提取的频域接收数据,发送和接收天线之间的信道失真和干扰被均衡。
    • 55. 发明申请
    • METHOD AND APPARATUS FOR CONTROL OF ENHANCED DEDICATED CHANNEL TRANSMISSIONS
    • 用于控制增强专用信道传输的方法和装置
    • US20120257591A1
    • 2012-10-11
    • US13523306
    • 2012-06-14
    • Stephen E. TerryGuodong ZhangJung-Lin PanPeter S. Wang
    • Stephen E. TerryGuodong ZhangJung-Lin PanPeter S. Wang
    • H04W72/04
    • H04W72/0446H04W28/18H04W52/346H04W52/367H04W72/04H04W72/1226H04W72/14
    • A method and apparatus for controlling enhanced dedicated channel (E-DCH) transmissions are disclosed. An enhanced uplink medium access control (MAC-e/es) entity processes a received scheduling grant to calculate a serving grant. The MAC-e/es entity determines whether both a hybrid automatic repeat request (H-ARQ) process for scheduled data and scheduled data are available. If an H-ARQ process for scheduled data and scheduled data are available, the MAC-e/es entity determines whether a serving grant exists. The MAC-e/es entity calculates a remaining power based on maximum allowed power and restricts an E-DCH transport format combination (E-TFC) based on the remaining power. The MAC-e/es entity selects an E-TFC using the serving grant and generates a MAC-e protocol data unit. The MAC-e/es entity may process the received scheduled grant is at each transmission time interval or may store the received scheduled grant in a grant list until there is E-DCH data to transmit.
    • 公开了一种用于控制增强专用信道(E-DCH)传输的方法和装置。 增强的上行链路媒体接入控制(MAC-e / es)实体处理接收到的调度许可以计算服务授权。 MAC-e / es实体确定调度数据和调度数据的混合自动重传请求(H-ARQ)是否可用。 如果调度数据和调度数据的H-ARQ过程可用,则MAC-e / es实体确定是否存在服务授权。 MAC-e / es实体基于最大允许功率计算剩余功率,并且基于剩余功率限制E-DCH传输格式组合(E-TFC)。 MAC-e / es实体使用服务授权选择E-TFC,并生成MAC-e协议数据单元。 MAC-e / es实体可以在每个传输时间间隔处理接收到的调度许可,或者可以将接收到的调度许可存储在授权列表中,直到有E-DCH数据要发送。
    • 57. 发明申请
    • DOWNLINK CONTROL IN HETEROGENEOUS NETWORKS
    • 异构网络中的下行链路控制
    • US20120106465A1
    • 2012-05-03
    • US13098022
    • 2011-04-29
    • Afshin HaghighatPascal M. AdjakpleDavid S. BassMahmoud WatfaMihaela C. BeluriGuodong Zhang
    • Afshin HaghighatPascal M. AdjakpleDavid S. BassMahmoud WatfaMihaela C. BeluriGuodong Zhang
    • H04W74/04H04W72/04
    • H04W72/1289H04L1/1829H04L5/0053H04W84/045
    • Embodiments contemplate a wireless transmit/receive unit (WTRU) that may operate in a heterogeneous wireless communication network (HetNet). The WTRU may detect the presence of an extended physical downlink control channel (E-PDCCH) and may decode a physical downlink control channel (PDCCH) upon detecting the E-PDCCH. The WTRU may obtain scheduling information of the E-PDCCH on a physical downlink shared control channel (PDSCH) from the decoded PDCCH. The WTRU may also determine control information for the WTRU from the E-PDCCH using the scheduling information of the E-PDCCH. The HetNet may further include a first eNB and a second eNB and the WTRU may receive the E-PDCCH from the first eNB and another E-PDCCH from the second eNB. The other E-PDCCH may be coordinated with the E-PDCCH such that the interference between the other E-PDCCH and the E-PDCCH from the perspective of the WTRU may be reduced relative to no coordination.
    • 实施例考虑可以在异构无线通信网络(HetNet)中操作的无线发射/接收单元(WTRU)。 WTRU可以检测到扩展物理下行链路控制信道(E-PDCCH)的存在,并且可以在检测到E-PDCCH时解码物理下行链路控制信道(PDCCH)。 WTRU可以从解码的PDCCH获取物理下行链路共享控制信道(PDSCH)上的E-PDCCH的调度信息。 WTRU还可以使用E-PDCCH的调度信息从E-PDCCH确定WTRU的控制信息。 HetNet还可以包括第一eNB和第二eNB,并且WTRU可以从第一eNB接收E-PDCCH,并从另一个eNB接收另一个E-PDCCH。 其他E-PDCCH可以与E-PDCCH协调,使得相对于无协调,可以减少来自WTRU的角度的其他E-PDCCH与E-PDCCH之间的干扰。