公开(公告)号：US10985958B2

公开(公告)日：2021-04-20

申请号：US16337746

申请日：2017-09-19

Applicant: IDAC Holdings, Inc.

Inventor： Alphan Sahin ,  Erdem Bala ,  Rui Yang ,  Mihaela C. Beluri ,  Moon-il Lee ,  Janet A. Stern-Berkowitz

IPC: H04L27/26 ,  H04L5/00 ,  H04L25/03 ,  H04L1/08

Abstract: Systems, methods, and instrumentalities are disclosed for separating a channel and data without the use of reference signals. For example, a wireless transmit/receive unit (WTRU) may determine a first orthogonal frequency-division multiplexing (OFDM) symbol based on a data vector. The WTRU may determine a second OFDM symbol by applying a circular time-inverse operation and a conjugate operation to the first OFDM symbol. The WTRU may send the first OFDM symbol and the second OFDM symbol. The first and the second OFDM symbols may be sent to consecutively. Discrete Fourier Transform (DFT)-spread and nonlinear preprocessing (exponential transformation at the transmitter) may be used and/or peak-to-average power ratio (PAPR) may be reduced via randomizer block at the receiver.

公开(公告)号：US20200145069A1

公开(公告)日：2020-05-07

申请号：US16088363

申请日：2017-03-29

Applicant: IDAC Holdings, Inc.

Inventor： Steven Ferrante ,  Fengjun Xi ,  Rui Yang ,  Chunxuan Ye ,  Kyle Jung-Lin Pan

IPC: H04B7/06 ,  H04B7/10 ,  H04B7/0456

Abstract: Systems and methods described herein are provided for radiation pattern and modulation (RPM) based on channel-state information (CSI). The method may comprise receiving a set of bits; dividing the set of bits into at least three groups, wherein at least one group is size limited by a diversity order and selection factor applied by a CSI controller; mapping the groups to distinct control signals; generating a modulated RF signal and selecting at least one configurable antenna and a configuration of said at least one antenna based on the control signals; and transmitting the modulated RF signal through the at least one configured antenna.

公开(公告)号：US20200067680A1

公开(公告)日：2020-02-27

申请号：US16610222

申请日：2018-05-01

Applicant: IDAC Holdings, Inc.

Inventor： Shahrokh Nayeb Nazar ,  Mahmoud Taherzadeh Boroujeni ,  Erdem Bala ,  Alphan Sahin ,  Oghenekome Oteri ,  Rui Yang ,  Frank La Sita ,  Ahmad Reza Hedayat

IPC: H04L5/00 ,  H04W72/04 ,  H04L1/16

Abstract: A wireless transmit receive unit (WTRU) may be configured to transmit uplink control information such as Hybrid Automatic Retransmission Request (HARQ) Acknowledgement or Negative Acknowledgement (ACK/NACK) using a sequence. The HARQ ACK/NACK may comprise one bit or two bits of information, and the WTRU may use a cyclic shift of the sequence to transmit the HARQ ACK/NACK. The WTRU may use different cyclic shifts of the sequence to transmit different HARQ ACK/NACK values and the cyclic shifts may be separated from each other in a manner to facilitate the transmissions. The WTRU may be further configured to receive, from a physical downlink control channel (PDCCH), an indication of a resource block for transmitting the HARQ ACK/NACK.

公开(公告)号：US10567147B2

公开(公告)日：2020-02-18

申请号：US14424740

申请日：2013-08-27

Applicant: IDAC Holdings, Inc.

Inventor： Robert A. DiFazio ,  Philip J. Pietraski ,  Rui Yang ,  Erdem Bala ,  Jialing Li

IPC: H04B7/14 ,  H04L5/14

Abstract: Embodiments contemplate TDD systems and techniques where timeslots may be allocated as DL, UL, or FDSC; the base station (BS) may be full duplex singled channel (FDSC) capable; and some, all, or none of the UEs (or WTRUs) may be FDSC capable. In one or more embodiments, FDSC1 timeslots may be contemplated that may be used (in some embodiments perhaps exclusively used) by a pair of radios, for example one BS and one UE, both having FD capability. In one or more embodiments, FDSC timeslots may be shared among a BS with FDSC capability and two or more UEs, that may be half duplex (HD). Embodiments also contemplate various FDD systems and techniques, including full duplex FDD systems and techniques.

公开(公告)号：US20200052948A1

公开(公告)日：2020-02-13

申请号：US16094748

申请日：2017-04-20

Applicant: IDAC Holdings, Inc.

Inventor： Alphan Sahin ,  Mihaela C Beluri ,  Rui Yang ,  Erdem Bala ,  Afshin Haghighat

IPC: H04L27/26 ,  H04B1/7085 ,  H04L5/00

Abstract: The invention pertains to methods and apparatus for non-systematic complex coded unique word DFT spread orthogonal frequency division multiplexing.

公开(公告)号：US20200008228A1

公开(公告)日：2020-01-02

申请号：US16337774

申请日：2017-09-28

Applicant: IDAC Holdings, Inc.

Inventor： Moon-il Lee ,  Erdem Bala ,  Janet A. Stern-Berkowitz ,  Mihaela C. Beluri ,  Alphan Sahin ,  Rui Yang

IPC: H04W72/12 ,  H04L5/00 ,  H04L27/26

Abstract: Systems, methods, and instrumentalities are disclosed for phase noise reference signal (PNRS) transmission, comprising receiving, at a wireless transmit receive unit (WTRU), scheduling information for a Physical Uplink Shared Channel (PUSCH) transmission, wherein the scheduling information includes an indication of a set of physical resource blocks (PRBs) and a modulation coding scheme (MCS) level, determining a density for the PNRS transmission based on at least one of: the MCS level, a frequency band for the PUSCH transmission, or a subcarrier spacing of the PUSCH transmission, and transmitting the PUSCH in the scheduled set of PRBs using the determined density of PNRS.

公开(公告)号：US20190357222A1

公开(公告)日：2019-11-21

申请号：US16475818

申请日：2018-01-05

Applicant: IDAC HOLDINGS, INC.

Inventor： Hanqing Lou ,  Xiaofei Wang ,  Rui Yang ,  Mihaela C. Beluri ,  Janet A. Stern-Berkowitz

IPC: H04W72/08 ,  H04L5/00 ,  H04W74/08 ,  H04W4/70

Abstract: A wireless transmit/receive unit (WTRU) may receive a grant-less (GL) transmission configuration that may include a first indication of a first set of resource blocks (RBs) for a first resource pool and a second indication of a second set of RBs for a second resource pool. The WTRU may select a subset of RBs in the first set, determine a subset of RBs in the second set based on the selected subset of RBs in the first set, and transmit UL data to the base station via the determined subset of RBs in the second set. The WTRU may receive a negative acknowledgement (NAK) with a third indication for at least one of a first transmission failure reason and a second transmission reason. The WTRU may adjust a backoff and determine a retransmission scheme based on the received third indication, and retransmit the UL data.

公开(公告)号：US20190222371A1

公开(公告)日：2019-07-18

申请号：US16300195

申请日：2017-05-08

Applicant: IDAC Holdings, Inc.

Inventor： Alphan Sahin ,  Erdem Bala ,  Mihaela C. Beluri ,  Rui Yang

IPC: H04L5/00 ,  H04L27/34 ,  H04L27/26 ,  H04W76/27 ,  H04L1/00

CPC classification number: H04L5/0021 ,  H04L1/0068 ,  H04L27/2636 ,  H04L27/3416 ,  H04W76/27

Abstract: A method for increasing the efficiency and robustness of non-orthogonal multiple access (NOMA) schemes may include storing relationships that associate codewords with values of bit sets, receiving information bits and converting the information bits into bit sets, determining codewords associated with the bit sets, and transmitting the determined codewords. A first codeword may be pre-defined for a WTRU. A second codeword associated with a first bit set may be determined using a first relationship between the first codeword and a value of the first bit set. A third codeword associated with a second bit set may be determined using a second relationship between the second codeword and a value of the second bit set.

公开(公告)号：US10305651B2

公开(公告)日：2019-05-28

申请号：US14875459

申请日：2015-10-05

Applicant: IDAC Holdings, Inc. ,  University of South Florida

Inventor： Ertugrul Guvenkaya ,  Rui Yang ,  Erdem Bala ,  Huseyin Arslan

IPC: H04L5/00 ,  H04L27/26 ,  H04L27/00 ,  H04J11/00 ,  H04L27/20 ,  H04L27/36

Abstract: Systems, methods and instrumentalities are disclosed for superposed signaling for bandwidth efficiency in wireless communications. Homogeneous and heterogeneous signals may be superposed on the same channel. Superposed signals may comprise, for example, multi carrier, frequency division and code division signals, including multiple access, e.g., OFDMA and CDMA, signals. Data for various receivers may be dynamically selected for signal superpositioning, for example, based on radio access technology, communication rate (e.g. high and low rates), distance between transmitter and receiver (e.g. near and far signals). Communication rate and power may be allocated to superposed signals. Interference nulling may be applied, for example, by selecting or excluding spreading codes and/or subcarriers. Nulled locations may be used to transmit critical information. Interference shaping may be applied to modify interference, e.g., by transmitting interference symbols using reserved spreading codes. Support information, e.g., code indices, code length and/or subcarriers, may be signaled to support or optimize performance.

公开(公告)号：US20190068425A1

公开(公告)日：2019-02-28

申请号：US16173507

申请日：2018-10-29

Applicant: IDAC Holdings, Inc.

Inventor： Alphan Sahin ,  Rui Yang ,  Fengjun Xi ,  Oghenekome Oteri ,  Hanqing Lou ,  Robert L. Olesen

IPC: H04L27/26 ,  H04L25/03

Abstract: A wireless transmit/receive unit (WTRU) may generate a first signal that utilizes a tail suppression signal generated from data and utilizes a first unique word. Elements of the data and the first signal may be mapped to one or more discrete Fourier transform spread (DFT-S) functions. An inverse DFT on symbols generated by the one or more DFT-S functions may be performed to generate a second signal for transmission.