公开(公告)号：US20180083818A1

公开(公告)日：2018-03-22

申请号：US15491337

申请日：2017-04-19

Applicant: QUALCOMM Incorporated

Inventor： Yi HUANG ,  Wanshi Chen ,  Hao Xu ,  Wei Zeng

IPC: H04L27/26 ,  H04L5/00 ,  H04W72/04

CPC classification number: H04L27/2613 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0051 ,  H04L27/2611 ,  H04W72/0446

Abstract: A method and apparatus for demodulation reference signal (DMRS) communication are described. The method and apparatus include determining a DMRS pattern for at least two multiplexing schemes. In some aspects, the at least two multiplexing schemes may include orthogonal frequency-division multiplexing (OFDM) and single carrier frequency-division multiplexing (SC-FDM). Further, in some aspects, the DMRS pattern may correspond to a continuous tone pattern in each subframe transmitted in accordance with both SC-FDM and OFDM. Additionally, in some aspects, the DMRS pattern may correspond to a comb tone pattern in each subframe transmitted in accordance with both SC-FDM and OFDM. The method and apparatus further include transmitting a DMRS in accordance with at least one of the two multiplexing schemes and based on the DMRS pattern.

公开(公告)号：US20170171850A1

公开(公告)日：2017-06-15

申请号：US15268207

申请日：2016-09-16

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok Ang ,  Wei Zeng ,  Krishna Kiran Mukkavilli ,  Tao Luo ,  Tingfang Ji ,  Yang Yang

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/0406 ,  H04L5/0055 ,  H04L5/1469 ,  H04W72/0413 ,  H04W72/0446

Abstract: Control information may be identified and provided to a user equipment (UE) that is formatted into a codeword that is transmitted in a first symbol of a downlink transmission to the UE. The control information may include an allocation of downlink or uplink resources for the UE and data processing parameters. The control information may be partitioned into first control information transmitted in a first codeword and second control information that may be formatted into a second codeword. The second control information may be determined based at least in part on the data acknowledgment from the UE. Such partitioned control information may allow a base station to perform some processing related to transmissions for a transmission time interval (TTI) prior to the start of the TTI, and allow the base station to perform some processing for the TTI after the start of the TTI.

公开(公告)号：US20170164397A1

公开(公告)日：2017-06-08

申请号：US15274738

申请日：2016-09-23

Applicant: QUALCOMM Incorporated

Inventor： Wei Zeng ,  Krishna Kiran Mukkavilli ,  Tingfang Ji ,  Joseph Binamira Soriaga ,  Peter Pui Lok Ang ,  Jing Jiang ,  Tao Luo ,  Naga Bhushan ,  John Edward Smee

IPC: H04W72/12 ,  H04L5/00 ,  H04W72/04 ,  H04L5/14

CPC classification number: H04W72/1278 ,  H04L1/1854 ,  H04L1/1864 ,  H04L5/0055 ,  H04L5/14 ,  H04L5/1469 ,  H04W72/0446 ,  H04W72/1268 ,  H04W72/1273

Abstract: Various aspects of the disclosure provide for apparatus, methods, and software for implementing a time division duplex (TDD) wireless communication system that can utilize configurable delays to relax data processing timelines when needed. By implementing these configurable delays, very high data rates may be accommodated at the same time as lower data rates for devices that may have reduced or lesser processing capabilities.

公开(公告)号：US11570760B2

公开(公告)日：2023-01-31

申请号：US16579472

申请日：2019-09-23

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Wei Zeng ,  Jing Jiang ,  Tingfang Ji

IPC: H04W72/04 ,  H04L5/00 ,  H04L5/26 ,  H04L41/0896 ,  H04L27/00

Abstract: Methods, systems, and devices for wireless communication are described that provide for uplink channel multiplexing and waveform selection. Uplink channels to be transmitted from one or more user equipment (UEs) to a base station are multiplexed together or separately into an uplink subframe. Each UE is capable of using different waveforms to transmit different channels. Reference signals are communicated according to an RS pattern, which is symmetric across uplink and downlink channels.

公开(公告)号：US11405914B2

公开(公告)日：2022-08-02

申请号：US15612762

申请日：2017-06-02

Applicant: QUALCOMM Incorporated

Inventor： Wei Zeng ,  Wanshi Chen ,  Tingfang Ji ,  Peter Gaal

IPC: H04W72/04 ,  H04W88/06 ,  H04L27/26 ,  H04L5/00 ,  H04L5/14 ,  H04L27/00

Abstract: Techniques are described that provide for waveform selection for uplink (UL) and/or downlink (DL) wireless transmissions based on one or more factors associated with the wireless transmission, a transmitter that is to transmit the wireless transmission, or combinations thereof. UL and DL transmissions may use one of a number of different waveforms, such as single-carrier waveforms that use a single carrier for information transmission of a wireless channel, and multi-carrier waveforms that use multiple carriers at different frequencies to transmit some of the bits on each channel. Multi-carrier transmission waveforms or single-carrier waveforms may be selected for wireless transmissions based on a bandwidth allocated for the transmissions, a capability of a transmitter that is to transmit the transmissions, or combinations thereof.

公开(公告)号：US10959188B2

公开(公告)日：2021-03-23

申请号：US15851868

申请日：2017-12-22

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Wei Zeng ,  Tingfang Ji ,  Amir Aminzadeh Gohari

IPC: H04W52/32 ,  H04W72/04 ,  H04W52/14 ,  H04W52/16 ,  H04W52/22 ,  H04W52/34 ,  H04W72/14

Abstract: A user equipment (UE) may transmit a control channel and a data channel using contiguous resource allocations of a portion of a slot. The control channel may be associated with control channel power spectral density (PSD) and the data channel may be associated with a data channel PSD. When a difference between the control channel PSD and the data channel PSD exceeds a maximum delta value, the UE may experience degraded performance as a result of tonal interference and/or the like. In some aspects, the UE may determine a control channel transmit power for the control channel and a data channel transmit power for the data channel. The control channel transmit power and the data channel transmit power may be determined such that the maximum delta value is not exceeded and that a threshold relating to a link budget is satisfied, thereby ensuring that performance is not degraded.

公开(公告)号：US10784934B2

公开(公告)日：2020-09-22

申请号：US16476408

申请日：2018-02-05

Applicant: Qualcomm Incorporated

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

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

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：US10651996B2

公开(公告)日：2020-05-12

申请号：US15493922

申请日：2017-04-21

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04W48/12 ,  H04W24/02 ,  H04L1/18

Abstract: Methods and apparatuses for demodulation reference signal (DMRS) transmission are described. At a user equipment (UE), a method and apparatus may include receiving, from a network entity, a transmission configuration indication including a DMRS pattern for configuring DMRS transmission on a communication channel. The method and apparatus further includes transmitting or receiving a DMRS to or from the network entity on the channel in accordance with the DMRS pattern. At a network entity, a method and apparatus may include transmitting, to a UE, a transmission configuration indication including a DMRS pattern for configuring DMRS transmission on a communication channel. The method and apparatus further includes transmitting or receiving a DMRS to or from the UE on the channel in accordance with the DMRS pattern.

公开(公告)号：US10469224B2

公开(公告)日：2019-11-05

申请号：US15689476

申请日：2017-08-29

Applicant: QUALCOMM Incorporated

Inventor： Yi Huang ,  Wei Zeng ,  Wanshi Chen ,  Hao Xu ,  Tingfang Ji

IPC: H04W4/00 ,  H04L5/00 ,  H04L1/00 ,  H04B7/0413 ,  H04W88/02 ,  H04W88/08 ,  H04B7/0404

Abstract: Both precoded sounding reference signals (SRS) and unprecoded SRS are transmitted from a UE to an eNB. The UE may transmit both in the same subframe using either TDM or FDM. Or the UE may transmit each in different subframes from each other. The eNB uses some combination of the precoded SRS and the unprecoded SRS in scheduling resources for the UE. The eNB may also provide instruction to the UE for PUSCH precoding for data transmission. The eNB may signal the UE to use the same precoding as for the precoded SRS. The eNB may instead signal the UE to use different precoding by including the precoding information or delta information between the precoding used for the precoded SRS and the selected precoding for the PUSCH data.

公开(公告)号：US10440698B2

公开(公告)日：2019-10-08

申请号：US15888588

申请日：2018-02-05

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L5/00

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided that may be configured to receive a downlink control message, to determine a beta offset value for transmitting UCI based at least in part on the downlink control message, and to transmit the UCI on an uplink shared channel interleaved with data based on the determined beta offset value. The apparatus may identify the beta offset from a set of values based on the downlink control message. An apparatus may identify resources allocated for PUSCH and may map UCI to the identified resources for PUSCH in a frequency interleaved manner over a bandwidth of the identified resources. The apparatus may map data to the identified resources in a time-first or frequency-first manner, and may transmit a signal comprising UCI and data on the identified resources of the PUSCH in accordance with the mapping.