公开(公告)号：US10686579B2

公开(公告)日：2020-06-16

申请号：US15633397

申请日：2017-06-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Zukang Shen ,  Tarik Muharemovic ,  Runhua Chen ,  Eko Nugroho Onggosanusi

IPC: H04L5/00 ,  H04L1/00 ,  H04L25/03

Abstract: Within a wireless network, feedback information from user equipment (UE) to a control node (eNodeB) is necessary to support various functions. A UE receives an allocation from the eNodeB comprising a plurality of periodic transmission instances for a channel quality indicator (CQI) and a schedule comprising a plurality of periodic transmission instances for a rank indicator (RI), wherein the CQI comprises RI and other CQI fields. The UE then transmits an RI without transmitting the other CQI fields in a transmission instance allocated for both RI and other CQI fields.

公开(公告)号：US20200029203A1

公开(公告)日：2020-01-23

申请号：US16588231

申请日：2019-09-30

Applicant: Texas Instruments Incorporated

Inventor： Anthony Ekpenyong ,  Ralf Bendlin ,  Runhua Chen

IPC: H04W8/24 ,  H04B7/024 ,  H04L5/00 ,  H04W28/18 ,  H04W52/02 ,  H04W52/32

Abstract: A method of operating a wireless communication system is disclosed (FIG. 6). The method includes receiving a virtual cell identification (VCID) parameter (600) from a remote transmitter. A base sequence index (BSI) and a cyclic shift hopping (CSH) parameter (604,606) are determined in response to the VCID. A pseudo-random sequence is selected in response to the BSI and CSH (610,612). A reference signal is generated using the selected pseudo-random sequence (614).

公开(公告)号：US20190335432A1

公开(公告)日：2019-10-31

申请号：US16504699

申请日：2019-07-08

Applicant: Texas Instruments Incorporated

Inventor： Runhua Chen ,  Ralf Matthias Bendlin

IPC: H04W72/04 ,  H04L1/00

Abstract: A system and method for providing both localized and distributed transmission modes for EPDCCH is disclosed, where one EPDCCH comprises of one or multiple CCEs. Localized versus distributed transmission may be defined in terms of the EPDCCH to CCE resource mapping. In a localized transmission CCEs are restricted to be contained within one PRB. In a distributed transmission a CCE spans over multiple PRBs. A UE can be configured to either receive the EPDCCH only in localized or only in distributed transmissions. A UE can also be configured to expect EPDCCH transmissions in both localized and distributed transmissions. In each PRB configured by the higher layer as an EPDCCH resource, 24 REs that may be used for any DMRS transmission are always reserved and not used for EPDCCH transmission.

公开(公告)号：US20180146397A1

公开(公告)日：2018-05-24

申请号：US15877362

申请日：2018-01-22

Applicant: Texas Instruments Incorporated

Inventor： Runhua Chen ,  Anthony E. Ekpenyong

IPC: H04W28/06 ,  H04L5/00 ,  H04W72/04 ,  H04L1/06 ,  H04L1/18 ,  H04W88/02

CPC classification number: H04W28/06 ,  H04L1/06 ,  H04L1/1812 ,  H04L1/1861 ,  H04L5/0051 ,  H04L5/0055 ,  H04W72/042 ,  H04W88/02

Abstract: A method and apparatus of wireless communication between a base station and at least one user equipment. The method includes: transmitting an enhanced physical downlink control channel from the base station to the at least one user equipment using a demodulation reference signal antenna port; transmitting message from the base station to the at least one user equipment which is scheduled by the enhanced physical downlink control channel; receiving the message at the at least one user equipment; determining at the at least one user equipment whether the message was correctly received; and transmitting an ACK/NAK signal on an ACK/NAK resource determined from the enhanced physical downlink control channel from the at least one user equipment to the base station indicating whether the message was correctly received by the at least one user.

公开(公告)号：US09603141B2

公开(公告)日：2017-03-21

申请号：US14679913

申请日：2015-04-06

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Runhua Chen ,  Eko N. Onggosanusi ,  Vikram Chandrasekhar ,  Anthony Edet Ekpenyong

IPC: H04W4/00 ,  H04W72/04 ,  H04J11/00 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04J11/0033 ,  H04L1/1812 ,  H04L5/0023 ,  H04L5/0053 ,  H04L27/2601 ,  H04W72/14 ,  H04W88/02

Abstract: A wireless transmission system included at least one user equipment and a base station. The base station is operable to form a downlink control information block, modulate the downlink control information, precode the modulated downlink control information, and transmit the precoded, modulated downlink control information on at least one demodulation reference signal antenna port to the at least one user equipment. The precoded, modulated downlink control information is mapped to a set of N1 physical resource block pairs in a subframe from an orthogonal frequency division multiplexing symbol T1 to and orthogonal frequency division multiplexing symbol T2.

公开(公告)号：US09559828B2

公开(公告)日：2017-01-31

申请号：US14262032

申请日：2014-04-25

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Runhua Chen ,  Eko N. Onggosanusi

IPC: H04L5/00 ,  H04B7/04 ,  H04L1/00 ,  H04B7/02 ,  H04B7/06

CPC classification number: H04L5/0057 ,  H04B7/022 ,  H04B7/024 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0639 ,  H04L1/0025 ,  H04L5/0051

Abstract: Single user and multiuser MIMO transmission in a cellular network may be performed by a base station (eNB) transmitting either one or two transmission layers. A user equipment (UE) receives a reference symbol from the base station. The UE processes the reference symbol with one or more of a plurality of preceding matrices to form a plurality of channel quality indices (CQI). The UE provides feedback to the eNB comprising one or more feedback CQI selected from the plurality of CQI and one or more preceding matrix indicators (PMI) identifying the one or more preceding matrices used to form each of the one or more feedback CQIs, wherein at least two PMI are included in the feedback.

Abstract translation: 蜂窝网络中的单用户和多用户MIMO传输可以由发送一个或两个传输层的基站（eNB）执行。 用户设备（UE）从基站接收参考符号。 UE用多个前面的矩阵中的一个或多个来处理参考符号，以形成多个信道质量索引（CQI）。 UE向eNB提供包括从多个CQI中选择的一个或多个反馈CQI的反馈，以及标识用于形成一个或多个反馈CQI中的每一个的一个或多个先前矩阵的一个或多个先前矩阵指示符（PMI），其中， 反馈中包含最少两个PMI。

公开(公告)号：US20160345201A1

公开(公告)日：2016-11-24

申请号：US15230167

申请日：2016-08-05

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Runhua Chen ,  Anthony E. Ekpenyong

IPC: H04W28/06 ,  H04L5/00 ,  H04L1/18 ,  H04W72/04

CPC classification number: H04W28/06 ,  H04L1/06 ,  H04L1/1812 ,  H04L1/1861 ,  H04L5/0051 ,  H04L5/0055 ,  H04W72/042 ,  H04W88/02

Abstract: A method and apparatus of wireless communication between a base station and at least one user equipment. The method includes: transmitting an enhanced physical downlink control channel from the base station to the at least one user equipment using a demodulation reference signal antenna port; transmitting message from the base station to the at least one user equipment which is scheduled by the enhanced physical downlink control channel; receiving the message at the at least one user equipment; determining at the at least one user equipment whether the message was correctly received; and transmitting an ACK/NAK signal on an ACK/NAK resource determined from the enhanced physical downlink control channel from the at least one user equipment to the base station indicating whether the message was correctly received by the at least one user.

Abstract translation: 一种基站与至少一个用户设备之间的无线通信的方法和装置。 该方法包括：使用解调参考信号天线端口从基站向至少一个用户设备发送增强的物理下行链路控制信道; 从所述基站向由所述增强物理下行链路控制信道调度的所述至少一个用户设备发送消息; 在所述至少一个用户设备处接收所述消息; 在所述至少一个用户设备处确定所述消息是否被正确接收; 以及在从所述增强物理下行链路控制信道从至少一个用户设备到所述基站确定的ACK / NAK资源上发送ACK / NAK信号，指示所述消息是否被所述至少一个用户正确接收。

公开(公告)号：US20160254848A1

公开(公告)日：2016-09-01

申请号：US15132024

申请日：2016-04-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Eko Onggosanusi ,  Runhua Chen ,  Ralf Bendlin

IPC: H04B7/04

CPC classification number: H04B7/0456 ,  H04B7/0417 ,  H04B7/046 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0626 ,  H04B7/0639

Abstract: Channel state information (CSI) feedback in a wireless communication system is disclosed. A precoding matrix is generated for multi-antenna transmission based on precoding matrix indicator (PMI) feedback, wherein the PMI indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first codebook and a second codebook. In one embodiment, the first codebook comprises at least a first precoding matrix constructed with a first group of adjacent Discrete-Fourier-Transform (DFT) vectors. In another embodiment, the first codebook comprises at least a second precoding matrix constructed with a second group of uniformly distributed non-adjacent DFT vectors. In yet another embodiment, the first codebook comprises at least a first precoding matrix and a second precoding matrix, where said first precoding matrix is constructed with a first group of adjacent DFT vectors, and said second precoding matrix is constructed with a second group of uniformly distributed non-adjacent DFT vectors.

Abstract translation: 公开了无线通信系统中的信道状态信息（CSI）反馈。 基于预编码矩阵指示符（PMI）反馈生成用于多天线传输的预编码矩阵，其中PMI指示从来自第一码本和第二码本的两个矩阵的矩阵乘法导出的预编码矩阵的选择。 在一个实施例中，第一码本至少包括由第一组相邻离散付里叶变换（DFT）矢量构成的第一预编码矩阵。 在另一个实施例中，第一码本包括至少第二预编码矩阵，其由第二组均匀分布的非相邻DFT向量构成。 在又一实施例中，第一码本至少包括第一预编码矩阵和第二预编码矩阵，其中所述第一预编码矩阵由第一组相邻DFT向量构成，并且所述第二预编码矩阵由第二组均匀 分布不相邻的DFT向量。

公开(公告)号：US09397816B2

公开(公告)日：2016-07-19

申请号：US14682900

申请日：2015-04-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Zukang Shen ,  Tarik Muharemovic ,  Runhua Chen ,  Eko Nugroho Onggosanusi

IPC: H04L5/00 ,  H04L1/00 ,  H04L25/03

CPC classification number: H04L5/0058 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/0029 ,  H04L5/00 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0092 ,  H04L25/03343 ,  H04L2025/03802

Abstract: Within a wireless network, feedback information from user equipment (UE) to a control node (eNodeB) is necessary to support various functions. A UE receives an allocation from the eNodeB comprising a plurality of periodic transmission instances for a channel quality indicator (CQI) and a schedule comprising a plurality of periodic transmission instances for a rank indicator (RI), wherein the CQI comprises RI and other CQI fields. The UE then transmits an RI without transmitting the other CQI fields in a transmission instance allocated for both RI and other CQI fields.

公开(公告)号：US09042480B2

公开(公告)日：2015-05-26

申请号：US13864764

申请日：2013-04-17

Applicant: Texas Instruments Incorporated

Inventor： Eko N. Onggosanusi ,  Badri N. Varadarajan ,  Runhua Chen ,  Zukang Shen ,  Tarik Muharemovic

IPC: H04B15/00 ,  H04B7/04 ,  H04B7/06 ,  H04L27/34 ,  H04L27/26

CPC classification number: H04B7/0456 ,  H04B7/0426 ,  H04B7/0465 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0617 ,  H04L27/2601 ,  H04L27/34

Abstract: A transmitter is for use with multiple transmit antennas and includes a precoder unit configured to precode data for a transmission using a precoding matrix selected from a codebook, wherein the codebook corresponds to the following three transmission properties for an uplink transmission: 1) all precoding elements from the precoding matrix have a same magnitude, 2) each precoding element from the precoding matrix is taken from a set of finite values and 3) there is only one non-zero element in any row of the precoding matrix. The transmitter also includes a transmit unit configured to transmit the precoded data.

Abstract translation: 发射机用于多个发射天线，并且包括预编码器单元，其配置为使用从码本中选择的预编码矩阵来对数据进行预编码，其中所述码本对应于上行链路传输的以下三种传输属性：1）所有预编码元件 来自预编码矩阵具有相同的量值，2）来自预编码矩阵的每个预编码元素取自一组有限值，并且3）在预编码矩阵的任何行中只有一个非零元素。 发射机还包括被配置为发送预编码数据的发射单元。