公开(公告)号：US10594532B2

公开(公告)日：2020-03-17

申请号：US16228168

申请日：2018-12-20

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Jing Jiang ,  Yi Huang ,  Wei Zeng ,  Wanshi Chen ,  Tingfang Ji

IPC: H04L27/26 ,  H04B7/0404 ,  H04B7/06 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0456 ,  H04J13/12

Abstract: A configurable new radio (NR) uplink (UL) transmission may use transmit diversity. A user equipment (UE) may identify an uplink transmission of at least one stream as using one of cyclic prefix orthogonal frequency division multiplexing or discrete Fourier transform spread orthogonal frequency division multiplexing. The UE may apply a precoding matrix to the at least one identified stream. The precoding matrix changes over time. The precoding matrix may change based on closed loop feedback, a precoding cycling pattern, and/or a code division multiplexing group. The UE may transmit the at least one identified stream from multiple antennas according to the applied precoding matrix.

公开(公告)号：US10567205B2

公开(公告)日：2020-02-18

申请号：US15674428

申请日：2017-08-10

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Sony Akkarakaran ,  Wei Zeng ,  Peter Gaal ,  Yi Huang ,  Renqiu Wang ,  Hao Xu ,  Tao Luo ,  Tingfang Ji

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

Abstract: Methods, systems, and devices for wireless communications are described that support frequency and time domain multiplexing for low peak-to-average waveforms with multiple streams. A user equipment (UE) may identify sets of symbols associated with different streams (e.g., multiple single-carrier discrete Fourier transform (DFT)-spread waveforms), where each stream may be associated with a low peak-to-average power ratio (PAPR). In some cases, different waveforms may be mapped to subsets of frequency resources through frequency division multiplexing (FDM). The UE may further reduce the PAPR of the multiplexed waveforms by performing time division multiplexing (TDM) across the single-carrier streams, and sets of symbols that are not used by one waveform may be used by another waveform. Frequency domain phase ramps may be applied to align the multiplexed waveforms. Signals included in an uplink transmission according to these techniques may maintain properties similar to single-carrier waveforms, including a low PAPR.

公开(公告)号：US10530625B2

公开(公告)日：2020-01-07

申请号：US15873668

申请日：2018-01-17

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Wei Zeng ,  Peter Gaal ,  Hao Xu ,  Yi Huang ,  Renqiu Wang ,  Sony Akkarakaran ,  Tao Luo ,  Tingfang Ji

IPC: H04K1/10 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may be configured with a transmission stream processor used to maintain a lower peak-to-average power ratio (PAPR) for uplink transmissions. In some cases, a UE may map modulated symbols of different signals (or waveforms) to interleaved subsets of frequency resources, and this form of frequency division multiplexing (FDM) may increase the PAPR of an uplink transmission. To reduce the PAPR of uplink transmissions, a transmission stream processor at the UE may support techniques for phase ramping modulated symbols in the time domain prior to mapping the symbols to the frequency resources. These techniques may help to ensure that the signals to be included in an uplink transmission are aligned in such a way that the PAPR of the uplink transmission is reduced.

公开(公告)号：US20190379437A1

公开(公告)日：2019-12-12

申请号：US16476408

申请日：2018-02-05

Applicant: Se Yong PARK ,  Wei ZENG ,  Alexandros MANOLAKOS ,  Sony AKKARAKARAN ,  Yi HUANG ,  Renqiu WANG ,  Hao XU ,  Yu ZHANG ,  Joseph Binamira SORIAGA ,  Tingfang JI ,  Peter GAAL ,  Qualcomm Incorporated

Inventor： Se Yong Park ,  Wei Zeng ,  Alexandros Manolakos ,  Sony Akkarakaran ,  Yi Huang ,  Renqiu Wang ,  Hao Xu ,  Yu Zhang ,  Joseph Binamira Soriago ,  Tingfang Ji ,  Peter Gaal

IPC: H04B7/0456 ,  H04L27/26 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described that support a low peak-to-average power ratio (PAPR) precoded reference signal design for multiple-input, multiple-output (MIMO) transmissions. A user equipment (UE) may identify multiple sets of symbols associated with different reference signal waveforms, where each reference signal waveform may be associated with a low PAPR. In some cases, different single-carrier reference signal waveforms may be mapped to subsets of frequency resources through frequency division multiplexing (FDM) for a transmission on a single antenna. However, the addition of single-carrier waveforms through FDM for a transmission via an antenna may result in an uplink transmission having a high PAPR (e.g., as compared to single-carrier waveforms). The UE may reduce the PAPR of the uplink transmission by multiplexing the reference signal waveforms in the time domain (e.g., using time division multiplexing (TDM)).

公开(公告)号：US10454542B2

公开(公告)日：2019-10-22

申请号：US15660325

申请日：2017-07-26

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Wei Zeng ,  Xiaoxia Zhang ,  Hao Xu

IPC: H04B7/0456 ,  H04B7/0417 ,  H04B7/0452 ,  H04L27/26 ,  H04W88/02 ,  H04B7/06

Abstract: Aspects of the disclosure relate to multiple-input multiple-output (MIMO) signals, and the determination of a precoding matrix for configuring the MIMO signals. An uplink traffic channel may be configured utilizing orthogonal frequency division multiplexing (OFDM) waveform. Determination of the precoding matrix may be based at least in part on an estimate of the uplink carrier, where the uplink carrier estimate is based at least in part on a downlink reference signal, exploiting channel reciprocity in a time division duplex (TDD) carrier. Determination of the precoding matrix may further be based at least in part on a cross-correlation matrix Rnn or a whitening matrix determined by a scheduling entity. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US10389477B2

公开(公告)日：2019-08-20

申请号：US14856491

申请日：2015-09-16

Applicant: QUALCOMM Incorporated

Inventor： Tingfang Ji ,  John Edward Smee ,  Joseph Binamira Soriaga ,  Naga Bhushan ,  Wei Zeng ,  Krishna Kiran Mukkavilli

IPC: H04L27/26 ,  H04W72/04 ,  H04L1/00 ,  H04B1/7107

Abstract: Wireless communication devices are adapted to facilitate non-orthogonal underlay transmissions. In one example, wireless communication devices can receive a wireless transmission via a particular time and frequency resource, where the wireless transmission includes a first signal employing a modulation associated with orthogonal wireless communication, and a second signal employing a modulation associated with non-orthogonal wireless communication. The wireless communication device can decode the first signal and the second signal. In another example, wireless communication devices may transmit a first signal utilizing a first type of modulation associated with non-orthogonal wireless communication, where the first signal is transmitted over at least a portion of a time and frequency resource scheduled for a second signal from a second wireless communication device, the second signal utilizing a second type of modulation associated with orthogonal wireless communication. Other aspects, embodiments, and features are also included.

公开(公告)号：US20190124568A1

公开(公告)日：2019-04-25

申请号：US16222588

申请日：2018-12-17

Applicant: QUALCOMM Incorporated

Inventor： Keiichi Kubota ,  Tingfang Ji ,  Naga Bhushan ,  Gavin Bernard Hom ,  John Edward Smee ,  Joseph Binamira Soriaga ,  Wei Zeng

IPC: H04W36/00 ,  H04W48/12 ,  H04L12/18 ,  H04B7/0413

Abstract: A wireless network may provide system information by either a fixed periodic broadcast or broad-beam transmission or in response to a request by a user equipment (UE). The wireless network may broadcast (or broad-beam transmit) a signal that indicates to the UEs within a cell or zone coverage area that system information is to be transmitted on a fixed periodic schedule or in response to a request sent by one or more UEs.

公开(公告)号：US10264600B2

公开(公告)日：2019-04-16

申请号：US15411904

申请日：2017-01-20

Applicant: QUALCOMM Incorporated

Inventor： Yi Huang ,  Tao Luo ,  Krishna Kiran Mukkavilli ,  Wei Zeng

IPC: H04B7/00 ,  H04W72/12 ,  H04W72/04 ,  H04L5/00

Abstract: Aspects of the present disclosure provide a scheduling entity in communication with a set of scheduled entities within a wireless communication network. The scheduling entity groups a plurality of tones into uplink clusters, where each uplink cluster includes one or more adjacent tones. In addition, the scheduling entity maps a first set of uplink clusters to a first virtual cluster group (VCG) for an uplink control channel, assigns the first VCG to a first scheduled entity of the set of one or more scheduled entities, provides a first VCG index identifying the first VCG to the first scheduled entity and receives uplink control information from the first scheduled entity on the first VCG over the uplink control channel.

公开(公告)号：US10237105B2

公开(公告)日：2019-03-19

申请号：US15850821

申请日：2017-12-21

Applicant: QUALCOMM Incorporated

Inventor： Yi Huang ,  Wei Zeng ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Renqiu Wang

IPC: H04W52/14 ,  H04L27/26 ,  H04J13/00 ,  H04L1/06 ,  H04L5/00 ,  H04J11/00 ,  H04B7/06 ,  H04L5/14 ,  H04L1/00

Abstract: Methods, systems, and devices for wireless communication are described that support multiplexing uplink transmissions with transmit diversity with a single carrier waveform. Two or more UEs may be configured to use space time block codes (STBC) for transmissions using multiple uplink antennas. A first UE may be configured to use a first STBC for a first uplink transmission. An orthogonal cover code (OCC), such as a Walsh code, may be applied to the first STBC to generate a second STBC, and a second UE may use the second STBC for a second uplink transmission. The first UE and the second UE may concurrently transmit the first uplink transmission and the second uplink transmission. The first STBC and the second STBC may be applied across multiple OFDM symbols, or may be applied within an OFDM symbol on a modulated symbol level.

公开(公告)号：US10225065B2

公开(公告)日：2019-03-05

申请号：US15268450

申请日：2016-09-16

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok Ang ,  Tao Luo ,  Wei Zeng ,  Joseph Binamira Soriaga ,  Tingfang Ji ,  Jing Jiang

IPC: H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit control information using a narrowband common control region that occupies a portion of a system bandwidth. In some cases, data may be multiplexed during the same time period in tones that are not used by the common control region. The base station may transmit control region configuration information to one or more user equipment (UE) devices such as the bandwidth, central frequency, and multiplexing status of the common control region. In some cases, the common control region may be divided into subbands, and different UEs may be assigned to monitor different subbands. Unassigned UEs may monitor a default anchor subband.