公开(公告)号：US20200374688A1

公开(公告)日：2020-11-26

申请号：US16889518

申请日：2020-06-01

Applicant: QUALCOMM Incorporated

Inventor： Jay Kumar Sundararajan ,  Alexandros Manolakos ,  Naga Bhushan ,  Joseph Binamira Soriaga ,  Sumeeth Nagaraja

IPC: H04W8/24 ,  H04B7/0404 ,  H04B7/08 ,  H04B7/06 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) capable of supporting multiple antenna ports may determine that some combinations of antenna ports can be used simultaneously. The UE may make this determination by evaluating the relationships between the physical antennas and the transmit chains included in the UE. Upon determining that the combinations of antenna ports can be used simultaneously, the UE may send a message to a base station. The message may indicate whether two or more antenna ports can be used at the same time. The UE may communicate simultaneously over one or more antenna ports based on the scheduling information from the base station which takes into account the ability of the combination of antenna ports to be used concurrently.

公开(公告)号：US20200351813A1

公开(公告)日：2020-11-05

申请号：US16832273

申请日：2020-03-27

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Sony Akkarakaran ,  Guttorm Ringstad Opshaug ,  Sven Fischer ,  Joseph Binamira Soriaga

IPC: H04W64/00 ,  G01S5/02 ,  H04W24/10 ,  H04L5/00

Abstract: This disclosure provides methods, devices, and systems for beam group reporting for positioning in new radio (NR) wireless communications systems. In some wireless communications systems, multiple PRS resources, e.g., a beam group, received by a user equipment (UE) from the same network entity may be used to produce a combined Time of Arrival (TOA) measurement for the reference or target to derive an Reference Signal Time Difference (RSTD) estimate. The UE provides to a network entity an indication of the PRS resources in the beam group, which may be specifically or generally identified. Additionally, parameters associated with the beam group are provided, such as a relative quality of the TOA measurement for each PRS resource in the subset, a spread of the TOA measurements in the subset, a relative signal strength of each PRS resource in the subset, or a spread of the signal strength in the subset.

公开(公告)号：US20200351055A1

公开(公告)日：2020-11-05

申请号：US16583704

申请日：2019-09-26

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Xiaoxia Zhang ,  Tao Luo

IPC: H04L5/00 ,  H04W56/00 ,  H04W72/04 ,  H04J11/00

Abstract: A base station may identify an association between a set of physical cell identifiers (PCIs) identifying different transmission reception points (TRPs) and a set of transmission configuration indicator (TCI) states for a user equipment (UE). The base station may transmit a TCI state and PCI association indication to the UE. The UE may receive a downlink transmission using a receive beam associated with a TCI state, and may identify a PCI of the set of PCIs to use to decode the received downlink transmission. In cases where the TCI state used to receive the downlink transmission is associated with multiple PCIs, the UE may select a default PCI from the multiple PCIs, and may decode the received transmission accordingly. In some examples, the UE may receive reference signals from one or more of the serving TRPs and may identify a PCI to use to decode the received reference signals.

公开(公告)号：US10727929B2

公开(公告)日：2020-07-28

申请号：US16379480

申请日：2019-04-09

Applicant: QUALCOMM Incorporated

Inventor： Bilal Sadiq ,  Tianyang Bai ,  Vasanthan Raghavan ,  Juergen Cezanne ,  Pavan Kumar Vitthaladevuni ,  Alexandros Manolakos ,  Joseph Binamira Soriaga ,  Junyi Li ,  Naga Bhushan ,  Muhammad Nazmul Islam

IPC: H04B7/08 ,  H04W72/08 ,  H04B17/309 ,  H04W24/10 ,  H04B7/0417

Abstract: Disclosed are techniques for receive beam selection for measuring a reference radio frequency (RF) signal. In an aspect, a first node determines a type of measurement to be performed on the reference RF signal, selects a receive beam based on the type of measurement to be performed on the reference RF signal, generates the selected receive beam, receives, from a second node, using the generated receive beam, the reference RF signal transmitted on a wireless channel, and performs one or more measurements on the received reference RF signal according to the type of the measurement to be performed.

公开(公告)号：US20200228280A1

公开(公告)日：2020-07-16

申请号：US16837423

申请日：2020-04-01

Applicant: QUALCOMM Incorporated

Inventor： Wei Yang ,  Jing Jiang ,  Alexandros Manolakos ,  Chih-Ping Li

IPC: H04L5/00 ,  H04W76/27 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. One method may include receiving radio resource control signaling configured with a first set of demodulation reference signal parameters for transmission of an uplink data channel of a type, receiving downlink control information of a format to activate the transmission of the uplink data channel, identifying a second set of demodulation reference signal parameters for transmission of the uplink data channel of the type based on the received downlink control information, and activating the transmission of the uplink data channel using the first and second set of demodulation reference signal parameters.

公开(公告)号：US10687252B2

公开(公告)日：2020-06-16

申请号：US15466663

申请日：2017-03-22

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  June Namgoong ,  Yang Yang ,  Jing Jiang

IPC: H04W4/00 ,  H04W28/20 ,  H04W72/04 ,  H04L5/00 ,  H04W72/08 ,  H04W72/12

Abstract: A method at a scheduling entity might include determining that interference is present from a neighboring scheduling entity, which implements a second subcarrier spacing that is different from a first subcarrier spacing of the scheduling entity. The scheduling entity might request the neighboring scheduling entity to negotiate a bandwidth group (BWG), where the BWG is a bandwidth occupied by downlink subcarriers within which a transmission parameter is maintained. The method might include negotiating a bandwidth of the bandwidth group and transmitting, if negotiating is successful, downlink data to a scheduled entity served by the scheduling entity according to the negotiated bandwidth. The transmission parameter might be a precoder, rank, modulation order, power inside each BWG, or numerology. The numerology might be scalable and might be a combination of subcarrier spacing and cyclic prefix (CP) overhead, The subcarrier spacing might be scaled while keeping constant the CP overhead as a percentage of a symbol duration.

公开(公告)号：US20200186310A1

公开(公告)日：2020-06-11

申请号：US16702369

申请日：2019-12-03

Applicant: QUALCOMM Incorporated

Inventor： Wei Yang ,  Yi Huang ,  Alexandros Manolakos ,  Wanshi Chen ,  Peter Gaal ,  Gokul Sridharan ,  Juan Montojo

IPC: H04L5/00 ,  H04W72/04 ,  H04B7/0456

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may identify multiple demodulation reference signal (DMRS) symbols corresponding to multiple DMRS ports of a multiple input multiple output configuration. The transmitting device may generate multiple phase-rotated and precoded DMRS symbols by applying an orthogonal cover code, a phase rotation scheme, and a precoding matrix to the identified DMRS symbols. The transmitting device may map the phase-rotated and precoded DMRS symbols to time-frequency resources corresponding to multiple antenna ports, and transmit a DMRS based on the mapped phase-rotated and precoded DMRS symbols. The transmitting device may transmit the DMRS using multiple antennas that correspond to the antenna ports.

公开(公告)号：US10595217B2

公开(公告)日：2020-03-17

申请号：US15893459

申请日：2018-02-09

Applicant: QUALCOMM Incorporated

Inventor： Wenjun Li ,  Tao Luo ,  Alexandros Manolakos

IPC: H04W24/02 ,  H04W72/04 ,  H04W76/10 ,  H04L1/00 ,  H04W24/08 ,  H04W24/10

Abstract: Methods, systems, and devices for wireless communication are disclosed. Flexible interleaving configurations may be employed to support various operations, including beamforming. Flexible interleaving may include dynamically or semi-statically determining a combination of bit-level, tone-level, tone-group level, or other interleaving technique for one or more transmissions. The interleaving configuration may be based on delay spread, a coherence bandwidth, a signal to noise ratio, a Doppler spread, or a combination thereof. An interleaving configuration may be a determination may be made by a base station or some other network entity and explicitly signaled to another device. Additionally or alternatively, the determination may be made based on one or more implicit rules, which may be based on a variety of factors (e.g., available bandwidth, modulation and coding scheme (MCS), code block (CB) size). Further, interleaving may be enabled (or disabled) under certain conditions.

公开(公告)号：US10548155B2

公开(公告)日：2020-01-28

申请号：US16434133

申请日：2019-06-06

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Jing Jiang ,  Joseph Binamira Soriaga ,  Krishna Kiran Mukkavilli ,  Peter Pui Lok Ang ,  Tingfang Ji ,  Peter Gaal

IPC: H04W72/12 ,  H04L5/00 ,  H04L27/26 ,  H04W76/10

Abstract: Aspects of the present disclosure provide various wireless communication numerology designs that can maintain symbol boundary alignment while multiplexing different numerologies in wireless communication. The symbols may be scaled for different tone or subcarrier spacings while maintaining the symbol boundary alignment between different numerologies. Maintaining the symbol-boundary alignment between different numerologies enables symbol-level numerology multiplexing. The disclosed numerology designs enable low latency communication and improved interference management, and provide non-ambiguous symbol boundary timing reference for multiplexing different numerologies.

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)).