公开(公告)号：US20170229925A1

公开(公告)日：2017-08-10

申请号：US15199811

申请日：2016-06-30

Applicant: HOOMAN SHIRANI-MEHR ,  AHMAD KHOSHNEVIS ,  YONGWEI WU

Inventor： HOOMAN SHIRANI-MEHR ,  AHMAD KHOSHNEVIS ,  YONGWEI WU

IPC: H02J50/80 ,  H04W76/06 ,  H02J50/12 ,  H04W24/02 ,  H02J7/02 ,  H02J50/20

CPC classification number: H02J50/80 ,  H02J7/025 ,  H02J50/12 ,  H04W76/14 ,  H04W76/30 ,  H04W76/38

Abstract: Wireless link management techniques for wireless charging systems are described. According to some such techniques, a power receiving unit (PRU) may be configured to observe a rectifier voltage while operating in a charge complete connected (CCC) mode according to which it possesses a wireless connection with a power transmitting unit (PTU) operating in a power save state. In various embodiments, the PRU may be configured to observe the rectifier voltage in an attempt to detect power beacons generated by the PTU. In some embodiments, the PRU may be configured to maintain the wireless connection if it detects power beacons, and to terminate the wireless connection if it does not detect any beacons. Other embodiments are described and claimed.

公开(公告)号：US09088872B2

公开(公告)日：2015-07-21

申请号：US13529280

申请日：2012-06-21

Applicant: Hooman Shirani-Mehr ,  Debdeep Chatterjee ,  Apostolos Papathanassiou ,  Peter J. Smith ,  Mansoor Shafi ,  Abdulla Firag

Inventor： Hooman Shirani-Mehr ,  Debdeep Chatterjee ,  Apostolos Papathanassiou ,  Peter J. Smith ,  Mansoor Shafi ,  Abdulla Firag

IPC: H04B1/38 ,  H04W4/06 ,  H04B7/04 ,  H04W52/02 ,  H04L12/891 ,  H04W52/04 ,  H04B7/06 ,  H04L5/00 ,  H04W72/04 ,  H04W4/08 ,  H04W36/00 ,  H04W28/04 ,  H04W72/00 ,  H04L12/18

CPC classification number: H04W52/0222 ,  H04B7/024 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/0613 ,  H04B7/0615 ,  H04B7/0619 ,  H04L5/0032 ,  H04L5/0037 ,  H04L12/189 ,  H04L25/0204 ,  H04L45/245 ,  H04L47/41 ,  H04W4/06 ,  H04W4/08 ,  H04W28/10 ,  H04W36/0005 ,  H04W48/12 ,  H04W48/16 ,  H04W48/18 ,  H04W52/0235 ,  H04W52/04 ,  H04W52/146 ,  H04W52/244 ,  H04W52/365 ,  H04W52/54 ,  H04W72/005 ,  H04W72/042 ,  H04W72/0426 ,  H04W72/0446 ,  H04W72/082 ,  H04W72/1215 ,  H04W72/1278 ,  H04W72/1294 ,  H04W76/28 ,  H04W76/34 ,  H04W76/40 ,  H04W84/042 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1226 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/21 ,  Y02D70/23 ,  Y02D70/24 ,  Y02D70/444

Abstract: Briefly, in accordance with one or more embodiments, a codebook for wireless transmissions may be generated by dividing a codebook into a fixed set of codewords and an adaptive set of codewords. The adaptive set of codewords may be scaled to cluster together and then rotated to be centered or nearly centered about a target. The adaptive set of codewords may then be merged with the fixed set of codewords to provide a hybrid codebook. A codeword from the hybrid codebook may be selected for precoding a transmission to provide a minimum, or nearly minimum, quantization error.

Abstract translation: 简而言之，根据一个或多个实施例，可以通过将码本划分成固定的码字集合和自适应码字集合来生成用于无线传输的码本。 可以将自适应码字集合缩放以聚集在一起，然后旋转以围绕目标居中或几乎居中。 然后可以将自适应码字集合与固定的码字集合合并提供混合码本。 可以选择来自混合码本的码字用于预编码传输以提供最小或接近最小的量化误差。

公开(公告)号：US20150139292A1

公开(公告)日：2015-05-21

申请号：US14125258

申请日：2013-06-26

Applicant: Hooman Shirani-Mehr ,  Masoud Sajadieh

Inventor： Hooman Shirani-Mehr ,  Masoud Sajadieh

IPC: H04B7/04 ,  H04W24/10

CPC classification number: H04W8/082 ,  H04B1/56 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0619 ,  H04B7/063 ,  H04B7/0695 ,  H04B7/088 ,  H04L1/1864 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0057 ,  H04L5/0085 ,  H04L25/0206 ,  H04L25/03305 ,  H04L47/803 ,  H04L65/4092 ,  H04L65/601 ,  H04L65/602 ,  H04L65/604 ,  H04L65/607 ,  H04L65/608 ,  H04L65/80 ,  H04L2025/03426 ,  H04M1/72572 ,  H04N21/2402 ,  H04N21/8456 ,  H04N21/8543 ,  H04W4/021 ,  H04W8/02 ,  H04W8/06 ,  H04W24/00 ,  H04W24/02 ,  H04W28/02 ,  H04W28/0226 ,  H04W28/0289 ,  H04W28/085 ,  H04W28/20 ,  H04W36/0005 ,  H04W36/0011 ,  H04W36/0022 ,  H04W36/08 ,  H04W36/22 ,  H04W36/26 ,  H04W36/30 ,  H04W48/06 ,  H04W48/12 ,  H04W48/16 ,  H04W48/18 ,  H04W56/001 ,  H04W72/0446 ,  H04W72/046 ,  H04W72/082 ,  H04W76/15 ,  H04W84/042 ,  H04W84/045 ,  H04W84/12 ,  H04W88/02 ,  H04W88/08 ,  H04W88/10 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/21 ,  Y02D70/23 ,  Y02D70/444

Abstract: Technology to provide hybrid beamforming feedback is disclosed. In an example, a user equipment (UE) can include computer circuitry configured to: Receive a reference signal (RS) from a node; calculate an optimal channel direction from the RS; calculate an optimal signal-to-interference-plus-noise ratio (SINR) for the optimal channel direction, where the optimal SINR is conditionally calculated with an intra-cell interference component or calculated without the intra-cell interference component based on a feedback configuration; and transmit the optimal channel direction and the optimal SINR to the node.

Abstract translation: 公开了提供混合波束成形反馈的技术。 在一个示例中，用户设备（UE）可以包括被配置为：从节点接收参考信号（RS）的计算机电路; 从RS计算最佳信道方向; 计算最佳信道方向的最佳信号与干扰加噪声比（SINR），其中最佳SINR有条件地用小区内干扰分量计算，或者基于反馈配置在没有小区内干扰分量的情况下计算 ; 并向节点发送最优信道方向和最佳SINR。

公开(公告)号：US20130329594A1

公开(公告)日：2013-12-12

申请号：US13994031

申请日：2011-09-30

Applicant: Alexei Vladimirovich Davydov ,  Gregory Vladimirovich Morozov ,  Hooman Shirani-Mehr ,  Alexander Alexandrovich Maltsev ,  Vadim Sergeyevich Sergeyev ,  Ilya Alexandrovich Bolotin

Inventor： Alexei Vladimirovich Davydov ,  Gregory Vladimirovich Morozov ,  Hooman Shirani-Mehr ,  Alexander Alexandrovich Maltsev ,  Vadim Sergeyevich Sergeyev ,  Ilya Alexandrovich Bolotin

IPC: H04W24/02 ,  H04B7/04

CPC classification number: H04W56/001 ,  H04B7/0456 ,  H04B7/0486 ,  H04B7/0632 ,  H04B7/0639 ,  H04L5/003 ,  H04L5/0037 ,  H04L5/005 ,  H04L5/0094 ,  H04L25/0206 ,  H04L25/0226 ,  H04L25/0328 ,  H04L25/03343 ,  H04L43/50 ,  H04L45/70 ,  H04L65/608 ,  H04L2025/03426 ,  H04L2025/03802 ,  H04W4/70 ,  H04W24/00 ,  H04W24/02 ,  H04W24/10 ,  H04W28/08 ,  H04W48/10 ,  H04W48/12 ,  H04W48/16 ,  H04W48/20 ,  H04W52/0216 ,  H04W52/0219 ,  H04W52/146 ,  H04W52/18 ,  H04W72/00 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0453 ,  H04W88/02 ,  H04W88/08 ,  H04W92/20 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1226 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/21 ,  Y02D70/444

Abstract: In various embodiments, a first base station may communicate with a first user equipment (UE) over a wireless communication channel. The first base station may receive an interference indication from a second base station communicating with a second UE on the same wireless communication channel. In response to the interference indication, the first base station may transmit a request to the first UE for the first UE to send feedback information associated with the wireless communication channel to the first base station for one or more transmission ranks specified by the first base station. The first UE may determine the requested feedback information and transmit the determined feedback information to the first base station. Thereafter, the first base station may reduce a transmission rank of ongoing transmissions to the UE based on the interference indication and the determined feedback information.

Abstract translation: 在各种实施例中，第一基站可以通过无线通信信道与第一用户设备（UE）进行通信。 第一基站可以在相同无线通信信道上从与第二UE进行通信的第二基站接收干扰指示。 响应于干扰指示，第一基站可以向第一UE发送请求以将第一UE发送与无线通信信道相关联的反馈信息发送给第一基站，用于由第一基站指定的一个或多个传输等级 。 第一UE可以确定所请求的反馈信息并将确定的反馈信息发送到第一基站。 此后，第一基站可以基于干扰指示和所确定的反馈信息来减少对UE的正在进行的传输的传输等级。

公开(公告)号：US20130265975A1

公开(公告)日：2013-10-10

申请号：US13994322

申请日：2011-12-30

Applicant: Hooman Shirani-Mehr ,  Shafi Bashar ,  Jong-Kae Fwu ,  Xiaogang Chen ,  Apostolos Papathanassiou

Inventor： Hooman Shirani-Mehr ,  Shafi Bashar ,  Jong-Kae Fwu ,  Xiaogang Chen ,  Apostolos Papathanassiou

IPC: H04W72/04

CPC classification number: H04W72/042 ,  H04B7/0697 ,  H04B15/00 ,  H04L1/0025 ,  H04L1/0038 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/06 ,  H04L5/0037 ,  H04L5/14 ,  H04L27/34 ,  H04L27/362 ,  H04W4/70 ,  H04W8/02 ,  H04W24/00 ,  H04W24/08 ,  H04W52/0209 ,  H04W52/0212 ,  H04W52/0251 ,  H04W52/0258 ,  H04W52/143 ,  H04W52/242 ,  H04W52/244 ,  H04W52/325 ,  H04W72/02 ,  H04W72/04 ,  H04W72/0446 ,  H04W72/082 ,  H04W72/1215 ,  H04W72/1278 ,  H04W76/19 ,  H04W76/28 ,  H04W84/042 ,  H04W88/06 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1226 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/21 ,  Y02D70/23 ,  Y02D70/24 ,  Y02D70/444

Abstract: In accordance with some embodiments, uplink control information, including a channel quality index, may be transmitted using at least two layers. As a result, more information can be provided for use in situations, such as those involving carrier aggregation, where information for a large number of component carriers must all be provided on one primary component carrier.

Abstract translation: 根据一些实施例，可以使用至少两个层来发送包括信道质量指标的上行链路控制信息。 因此，可以提供更多的信息用于诸如涉及载波聚合的情况，其中大量分量载波的信息必须都在一个主要分量载波上提供。

公开(公告)号：US08331481B2

公开(公告)日：2012-12-11

申请号：US12274046

申请日：2008-11-19

Applicant: Seung Joon Lee ,  Dong Seung Kwon ,  Giuseppe Caire ,  Hooman Shirani-Mehr

Inventor： Seung Joon Lee ,  Dong Seung Kwon ,  Giuseppe Caire ,  Hooman Shirani-Mehr

IPC: H04L27/00

CPC classification number: H04B17/336 ,  H04B7/0434 ,  H04B7/0632 ,  H04B17/24 ,  H04L5/0053 ,  H04L25/0204

Abstract: The present invention relates to a channel state transmission method using time domain coefficient quantization. A terminal measures channel information in the time domain and transmits it to a base station. In this instance, a multipath frequency selective fading channel is displayed in a tapped delay line format configured with a per-path path delay value and a path gain in the time domain, differentiates a quantization level for each path gain for more efficient transmission, quantizes the same, and transmits it to a transmitter. Therefore, while the amount of bandwidths required for transmitting state information from the terminal to the base station is reduced, the base station can efficiently acquire channel state information on the entire bandwidths. Also, the base station transmits signals to many terminals through beamforming by using the acquired reliable channel state information, thereby increasing the terminal's signal receiving performance.

Abstract translation: 本发明涉及使用时域系数量化的信道状态传输方法。 终端在时域中测量信道信息并将其发送到基站。 在这种情况下，以具有每路径路径延迟值和时域中的路径增益的抽头延迟线格式显示多路径频率选择性衰落信道，对于每个路径增益的量化级别进行区分以实现更有效的传输，量化 相同，并将其发送到发射机。 因此，尽管从终端向基站发送状态信息所需的带宽量减少，但是基站可以有效地获取关于整个带宽的信道状态信息。 此外，基站通过使用获取的可靠信道状态信息通过波束形成向多个终端发送信号，从而增加终端的信号接收性能。

公开(公告)号：US09807723B2

公开(公告)日：2017-10-31

申请号：US13992726

申请日：2012-03-30

Applicant: Hooman Shirani-Mehr ,  Jong-Kae Fwu ,  Shafi Bashar

Inventor： Hooman Shirani-Mehr ,  Jong-Kae Fwu ,  Shafi Bashar

IPC: H04L5/00 ,  H04W56/00 ,  H04W52/34 ,  H04W24/02 ,  H04L1/00 ,  H04B3/36 ,  H04B7/0413 ,  H04L1/18 ,  H04W76/04 ,  H04W48/12 ,  H04W52/14 ,  H04W52/24 ,  H04B7/024 ,  H04W16/14 ,  H04W84/04

CPC classification number: H04W56/0045 ,  H04B3/36 ,  H04B7/024 ,  H04B7/0413 ,  H04L1/0003 ,  H04L1/0026 ,  H04L1/1812 ,  H04L5/001 ,  H04L5/0032 ,  H04L5/0057 ,  H04L5/0073 ,  H04L5/0091 ,  H04W16/14 ,  H04W24/02 ,  H04W48/12 ,  H04W52/146 ,  H04W52/241 ,  H04W52/34 ,  H04W76/27 ,  H04W84/045

Abstract: A system for updating channel state information may include a base station wirelessly sending a reference signal to a user device. The bases station may receive channel state information based on the reference signal. Then, the bases station may determine a number of transport blocks to enable, a number of layers to use, and an order of modulation for each transport block based on the channel state information. The bases station may then receive subsequent channel state information from the user device using the determined parameters.

公开(公告)号：US20160080051A1

公开(公告)日：2016-03-17

申请号：US14784256

申请日：2013-12-12

Applicant: Masoud SAJADIEH ,  Hooman SHIRANI-MEHR ,  Feng XUE ,  Qinghua LI

Inventor： Masoud SAJADIEH ,  Hooman SHIRANI-MEHR ,  Feng XUE ,  Qinghua LI

IPC: H04B7/04 ,  H04L27/20 ,  H04B7/06

CPC classification number: H04B7/0456 ,  H04B7/0452 ,  H04B7/0486 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04L27/20 ,  H04W4/70 ,  H04W12/02 ,  H04W28/0289 ,  H04W48/16 ,  H04W76/14 ,  H04W92/24

Abstract: A hybrid digital and analog beamforming device for a node operable with an antenna array is disclosed. In an example, the hybrid digital and analog beamforming device can include computer circuitry configured to: Segment antenna elements of an antenna array into at least two groups of antenna elements; map antenna ports for transmission chains to one group of the antenna elements; constrain digital precoding weights for a digital precoder for the antenna elements, where the digital precoding weight in dudes a digital phase and amplitude; and determine analog precoding weights for an analog precoder for the antenna elements, where the analog precoding weight includes an analog phase.

Abstract translation: 公开了一种用于可与天线阵列可操作的节点的混合数字和模拟波束成形装置。 在一个示例中，混合数字和模拟波束成形装置可以包括被配置为：将天线阵列的天线元件分成至少两组天线元件的计算机电路; 将传输链的天线端口映射到一组天线元件; 约束用于天线元件的数字预编码器的数字预编码权重，其中数字预编码权重在数字相位和振幅中; 并确定用于天线元件的模拟预编码器的模拟预编码权重，其中模拟预编码权重包括模拟相位。

公开(公告)号：US20160020843A1

公开(公告)日：2016-01-21

申请号：US14766952

申请日：2013-12-16

Applicant: Qinghua LI ,  Hooman SHIRANI-MEHR ,  Yuan ZHU ,  Xiaogang CHEN ,  Feng XUE

Inventor： Qinghua LI ,  Hooman SHIRANI-MEHR ,  Yuan ZHU ,  Xiaogang CHEN ,  Feng XUE

IPC: H04B7/06 ,  H04B7/04

CPC classification number: H04W8/082 ,  H04B1/56 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0619 ,  H04B7/063 ,  H04B7/0695 ,  H04B7/088 ,  H04L1/1864 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0057 ,  H04L5/0085 ,  H04L25/0206 ,  H04L25/03305 ,  H04L47/803 ,  H04L65/4092 ,  H04L65/601 ,  H04L65/602 ,  H04L65/604 ,  H04L65/607 ,  H04L65/608 ,  H04L65/80 ,  H04L2025/03426 ,  H04M1/72572 ,  H04N21/2402 ,  H04N21/8456 ,  H04N21/8543 ,  H04W4/021 ,  H04W8/02 ,  H04W8/06 ,  H04W24/00 ,  H04W24/02 ,  H04W28/02 ,  H04W28/0226 ,  H04W28/0289 ,  H04W28/085 ,  H04W28/20 ,  H04W36/0005 ,  H04W36/0011 ,  H04W36/0022 ,  H04W36/08 ,  H04W36/22 ,  H04W36/26 ,  H04W36/30 ,  H04W48/06 ,  H04W48/12 ,  H04W48/16 ,  H04W48/18 ,  H04W56/001 ,  H04W72/0446 ,  H04W72/046 ,  H04W72/082 ,  H04W76/15 ,  H04W84/042 ,  H04W84/045 ,  H04W84/12 ,  H04W88/02 ,  H04W88/08 ,  H04W88/10 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/21 ,  Y02D70/23 ,  Y02D70/444

Abstract: In embodiments, apparatuses, methods, and storage media may be described for reducing the overhead associated with the transmission of channel training signals from an eNodeB (eNB) of a wireless network. Specifically, the eNB may receive feedback from a user equipment (UE) regarding the received signal energy of a first and second beamformed signal produced with a first and second beamforming vector, respectively. The eNB may identify, based on the feedback of the received signal energy, a signal subspace and a null subspace. The eNB may then transmit a channel training signal to the signal subspace.

Abstract translation: 在实施例中，可以描述装置，方法和存储介质，用于减少与来自无线网络的eNodeB（eNB）的信道训练信号的传输相关联的开销。 具体地，eNB可以分别从用户设备（UE）接收关于由第一和第二波束成形向量产生的第一和第二波束形成信号的接收信号能量的反馈。 eNB可以基于接收到的信号能量的反馈来识别信号子空间和空子空间。 然后，eNB可以向信号子空间发送信道训练信号。

公开(公告)号：US20150029875A1

公开(公告)日：2015-01-29

申请号：US14231158

申请日：2014-03-31

Applicant: Yuan Zhu ,  Qinghua Li ,  Xiaogang Chen ,  Feng Xue ,  Hooman Shirani-Mehr

Inventor： Yuan Zhu ,  Qinghua Li ,  Xiaogang Chen ,  Feng Xue ,  Hooman Shirani-Mehr

IPC: H04W24/08 ,  H04W72/08

CPC classification number: H04W72/082 ,  H01Q1/243 ,  H01Q3/00 ,  H04B7/0632 ,  H04B7/0686 ,  H04B7/0695 ,  H04B17/318 ,  H04J11/0023 ,  H04L5/0007 ,  H04L5/0094 ,  H04L5/14 ,  H04L69/16 ,  H04W4/70 ,  H04W16/28 ,  H04W24/02 ,  H04W24/08 ,  H04W24/10 ,  H04W28/12 ,  H04W36/0066 ,  H04W36/0072 ,  H04W36/0083 ,  H04W36/30 ,  H04W52/0209 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0446 ,  H04W74/0833 ,  H04W76/10 ,  H04W76/11 ,  H04W76/14 ,  H04W76/27 ,  H04W84/045 ,  H04W84/12 ,  H04W84/18 ,  H04W88/06 ,  H04W88/08 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1226 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/166 ,  Y02D70/168 ,  Y02D70/21 ,  Y02D70/22 ,  Y02D70/23 ,  Y02D70/24 ,  Y02D70/25 ,  Y02D70/444

Abstract: A technology for an enhanced node B (eNode B) in a cellular network that is operable to determine downtilt using full dimensional (FD) multiple-input multiple-output (MIMO). A plurality of orthogonal frequency division multiple access (OFDMA) signals can be transmitted, wherein each transmitted OFDMA signal is transmitted with a selected downtilt angle from a two dimensional antenna array of the eNode B. Reference signal received power (RSRP) feedback information can be received from a UE for each of transmitted OFDMA signals at the selected downtilt angles. Received signal strength indicator (RSSI) feedback information can be received from the UE. A reference signal received quality (RSRQ) can be calculated for each of the selected antennas angles using the RSRP feedback information and the RSSI feedback information. A downtilt angle can be selected for transmitting data from the eNode B with a highest signal to interference plus noise ratio (SINR).

Abstract translation: 蜂窝网络中用于增强节点B（eNode B）的技术，其可操作以使用全维（FD）多输入多输出（MIMO）来确定下倾斜。 可以发送多个正交频分多址（OFDMA）信号，其中每个发送的OFDMA信号以来自eNode B的二维天线阵列的选定的下倾斜角发送。参考信号接收功率（RSRP）反馈信息可以是 在所选择的下倾角处从UE发送的每个发送的OFDMA信号。 可以从UE接收到接收信号强度指示符（RSSI）反馈信息。 可以使用RSRP反馈信息和RSSI反馈信息为每个所选择的天线角度计算参考信号接收质量（RSRQ）。 可以选择下倾角，以便从具有最高信号到干扰加噪声比（SINR）的eNode B传输数据。