公开(公告)号：US20180183507A1

公开(公告)日：2018-06-28

申请号：US15392302

申请日：2016-12-28

申请人： Stefan Franz ,  Ziyang Ju ,  Yeong-Sun Hwang ,  Ismael Gutierrez

发明人： Stefan Franz ,  Ziyang Ju ,  Yeong-Sun Hwang ,  Ismael Gutierrez

IPC分类号： H04B7/06 ,  H04L5/00 ,  H04B7/04 ,  H04B17/336 ,  H04B17/364 ,  H04L25/02

CPC分类号： H04B7/0626 ,  H04B7/0452 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/0695 ,  H04L5/0051 ,  H04L25/0226

摘要： An apparatus of a user equipment (UE) may include memory and processing circuitry coupled to the memory. The processing circuitry may be configured to estimate a communication channel for a multi-carrier signal based on a received reference signal, the multi-carrier signal aggregating a plurality of component carriers. During a transmission time interval of the multi-carrier signal, the UE can perform a global search over a beam search space to obtain a beam index recommendation for a component carrier of the plurality of component carriers. The beam index recommendation corresponds to a maximized channel quality metric of the estimated communication channel and is indicative of a beam grid within the beam search space. The UE can perform a localized search of a subset of the beam search space to obtain a second beam index recommendation for a second component carrier of the plurality of component carriers.

公开(公告)号：US20180167115A1

公开(公告)日：2018-06-14

申请号：US15575226

申请日：2015-06-25

申请人： Yuan Zhu ,  Yang Tang ,  Jiacheng Wang ,  Ismael Gutierrez ,  Yeong-Sun Hwang

发明人： Yuan Zhu ,  Yang Tang ,  Jiacheng Wang ,  Ismael Gutierrez ,  Yeong-Sun Hwang

IPC分类号： H04B7/04 ,  H04B7/06

CPC分类号： H04B7/0478 ,  H04B7/0639 ,  H04B7/065 ,  H04B7/0695

摘要： An enhanced Node B (eNB) for precoding is generally described. In some embodiments, a first precoding-matrix indicator (PMI) and a second PMI is received on an uplink channel from user equipment (UE). Symbols for multiple-input multiple output (MIMO) beamforming may be precoded by the eNB using a precoder matrix recommended by the first and second PMIs, for a MIMO downlink orthogonal frequency division multiple access (OFDMA) transmission. The first PMI and the second PMI are calculated by selecting a representative codeword that is indexed by i1 and i2 for a plurality of 2TX constituent beams, the 2TX constituent beam that provides the best system evaluation metric. The i1 index for wideband and the i2 index for each subband are identified from the defined 2TX constituent beam.

公开(公告)号：US20150071367A1

公开(公告)日：2015-03-12

申请号：US14022339

申请日：2013-09-10

申请人： Yeong-Sun Hwang ,  Huaning Niu ,  Holger Neuhaus

发明人： Yeong-Sun Hwang ,  Huaning Niu ,  Holger Neuhaus

IPC分类号： H04B7/04

CPC分类号： H04B7/0456 ,  H04B7/0408 ,  H04B7/0617

摘要： A method for determining a transmission direction for a communication of a network component of a radio communications network may include: determining a reference transmission direction based on a plurality of predetermined transmission directions that a network component of a radio communications network is configured to transmit at; selecting a plurality of candidate transmission directions in a spatial vicinity of the reference transmission direction, the plurality of candidate transmission directions being a subset of the plurality of predetermined transmission directions; and selecting a transmission direction for a communication of the network component from the reference transmission direction and the plurality of candidate transmission directions based on a selection criterion.

摘要翻译： 一种用于确定无线电通信网络的网络组件的通信的传输方向的方法可以包括：基于无线电通信网络的网络组件被配置为在其发送的多个预定传输方向来确定参考传输方向; 在参考传输方向的空间附近选择多个候选传输方向，所述多个候选传输方向是所述多个预定传输方向的子集; 以及基于选择标准从所述参考传送方向和所述多个候选传输方向选择所述网络组件的通信的传输方向。