公开(公告)号：US10333595B2

公开(公告)日：2019-06-25

申请号：US15932312

申请日：2018-02-16

Applicant: QUALCOMM Incorporated

Inventor： Seyed Ali Akbar Fakoorian ,  Xiaoxia Zhang ,  Taesang Yoo ,  Siddhartha Mallik ,  Juan Montojo

IPC: H04B7/04 ,  H04B7/0456 ,  H04B7/08 ,  H04B7/00 ,  H04B7/022 ,  H04L5/00

Abstract: Reference signal and transmitter (Tx)/receiver (Rx) precoding for user equipment (UE) multiplexing in new radio (NR) shared spectrum networks is discussed. In certain reference signals, a base station may schedule multiple UEs for transmission of uplink reference signals within an identified subframe. The base station may transmit a reference signal configuration message, wherein the reference signal configuration message includes a transmission sequence identifier identifying a multiplexing for antenna ports assigned for transmission of the uplink reference signals. The multiplexing may be one or both of frequency divisional multiplexing (FDM) and time division multiplexing (TDM) over the identified subframe. Additional reference signals, transmit precoders may be identified by the base station based on channel inversion calculations of the channel matrix determined based on uplink reference signals.

公开(公告)号：US20190174532A1

公开(公告)日：2019-06-06

申请号：US16245802

申请日：2019-01-11

Applicant: QUALCOMM Incorporated

Inventor： Jelena Damnjanovic ,  Taesang Yoo ,  Siddhartha Mallik ,  Aleksandar Damnjanovic ,  Arumugam Chendamarai Kannan ,  Madhavan Srinivasan Vajapeyam ,  Durga Prasad Malladi ,  Yongbin Wei ,  Tao Luo

IPC: H04W72/12 ,  H04L5/00 ,  H04W72/14 ,  H04L5/14 ,  H04L1/18

Abstract: Methods, systems, and devices for wireless communication are described. A base station may employ a multiplexing configuration based on latency and efficiency considerations. The base station may transmit a resource grant, a signal indicating the length of a downlink (DL) transmission time interval (TTI), and a signal indicating the length of a subsequent uplink (UL) TTI to one or more user equipment (UEs). The base station may dynamically select a new multiplexing configuration by, for example, setting the length of an UL TTI to zero or assigning multiple UEs resources in the same DL TTI. Latency may also be reduced by employing block feedback, such as block hybrid automatic repeat request (HARQ) feedback. A UE may determine and transmit HARQ feedback for each transport block (TB) of a set of TBs, which may be based on a time duration of a downlink TTI.

公开(公告)号：US10285117B2

公开(公告)日：2019-05-07

申请号：US15143821

申请日：2016-05-02

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Hao Xu ,  Durga Prasad Malladi ,  Yongbin Wei ,  Siddhartha Mallik ,  Jing Sun ,  Madhavan Srinivasan Vajapeyam ,  Jun Wang ,  Tao Luo ,  Xiaoxia Zhang ,  Wanshi Chen ,  Aleksandar Damnjanovic

IPC: H04W4/00 ,  H04W48/16 ,  H04W16/14 ,  H04W74/08 ,  H04L5/00 ,  H04W4/06 ,  H04W76/10

Abstract: Techniques are described for wireless communication. One method for wireless communication at a base station includes contending for access to a shared channel of a shared radio frequency spectrum band, and multiplexing first component carrier (CC) communication windows and second CC communication windows in the shared channel. A duration of orthogonal frequency domain multiplexed (OFDM) symbols of the first CC communication windows may be different from a duration of OFDM symbols of the second CC communication windows, and the multiplexing may occur on the shared channel upon winning contention for access to the shared channel. One method for wireless communication at a user equipment (UE) includes monitoring a shared channel of a shared radio frequency spectrum band for a first CC Listen Before Talk (LBT) frame, and receiving, in a second CC preamble, an indication of the first CC LBT frame.

公开(公告)号：US10187900B2

公开(公告)日：2019-01-22

申请号：US15608512

申请日：2017-05-30

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Taesang Yoo ,  Siddhartha Mallik ,  Juan Montojo ,  Aleksandar Damnjanovic

IPC: H04W74/08 ,  H04W72/12 ,  H04J11/00

Abstract: Interference management with a coloring concept is discussed. A target transmitter may obtain a first priority schedule for a transmission opportunity of the target transmitter, wherein the first priority schedule identifies transmission priority for a plurality of base station groups. Each of the base station groups may include one or more base stations that are grouped according to various transmission criteria. The target transmitter will identify data for transmission and monitor the medium sensing slots corresponding to each of the base station groups for a medium reservation signal. The highest priority medium reservation signal may be determined out of any medium reservation signals detected during the monitoring, The highest priority medium reservation signal is determined according to the first priority schedule. Once identified, the data is transmitted by the target transmitter when the highest priority medium reservation signal corresponds to the target transmitter.

公开(公告)号：US20190013921A1

公开(公告)日：2019-01-10

申请号：US16016176

申请日：2018-06-22

Applicant: QUALCOMM Incorporated

Inventor： Qingsi Wang ,  Yisheng Xue ,  Siddhartha Mallik ,  Ahmed Kamel Sadek

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

CPC classification number: H04L5/0057 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/1864 ,  H04L1/1867 ,  H04L1/20 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0082 ,  H04L5/14 ,  H04W72/0446

Abstract: Methods, systems, and devices for wireless communication are described. A method may include obtaining a first channel quality indicator (CQI) backoff value based on a first set of acknowledgment messages associated with a first subframe of a first interval; setting a modulation and coding scheme (MCS) of a first subframe of a second interval using the first CQI backoff value; obtaining a second CQI backoff value based on a second set of acknowledgment messages associated with a second subframe of the first interval; and setting a MCS of the second subframe of the second interval using the second CQI backoff value.

公开(公告)号：US20180352520A1

公开(公告)日：2018-12-06

申请号：US15615451

申请日：2017-06-06

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Siddhartha Mallik ,  Taesang Yoo ,  Tao Luo

IPC: H04W52/40 ,  H04W36/22 ,  H04W52/26 ,  H04W36/12 ,  H04W52/42 ,  H04W52/24

Abstract: Wireless communications systems and methods related to improving macro diversity are provided. A first wireless communication device communicates, in a frequency channel, a first signal with a user equipment (UE) during a first time period. The first wireless communication device coordinates, with a second wireless communication device, a communication of a second signal with the UE in the frequency channel during a second time period. The coordination with the second wireless communication device is based on a switch to coordinate with the second wireless communication device based on at least occupancy of the frequency channel. The second wireless communication device communicates, in the frequency channel, the second signal with the UE during the second time period based on the coordination. The first wireless communication device and the second wireless communication device are different. The first time period and the second time period are different.

公开(公告)号：US10149318B2

公开(公告)日：2018-12-04

申请号：US14812983

申请日：2015-07-29

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tao Luo ,  Yongbin Wei ,  Durga Prasad Malladi ,  Siddhartha Mallik ,  Xiaoxia Zhang ,  Hao Xu

IPC: H04W74/00 ,  H04W72/08 ,  H04W72/12 ,  H04J11/00

Abstract: Techniques are described for wireless communication. A first method includes receiving downlink control information for a first UE based at least in part on a group identifier associated with a NOMA group including the first UE and at least a second UE; and receiving a set of NOMA downlink transmissions at the first UE based at least in part on the downlink control information for the first UE. A second method includes receiving downlink control information for a first UE, the downlink control information for the first UE including an indication of at least a second UE; receiving downlink control information for the second UE based at least in part on the indication of at least the second UE; and receiving a set of NOMA downlink transmissions at the first UE based at least in part on the downlink control information for the first UE and the downlink control information for the second UE.

公开(公告)号：US10136333B2

公开(公告)日：2018-11-20

申请号：US15860442

申请日：2018-01-02

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Siddhartha Mallik ,  Xiaoxia Zhang ,  Jing Sun ,  Arumugam Chendamarai Kannan

IPC: H04W16/14 ,  H04L1/16 ,  H04L5/00 ,  H04L1/00 ,  H04W24/10 ,  H04W48/16 ,  H04W72/04 ,  H04W72/08 ,  H04W72/12 ,  H04L1/18

Abstract: Methods, systems, and devices are described for wireless communication. A device may use enhanced reporting mechanisms to support control information reporting on shared spectrum. In some cases, a device may utilize enhanced component carriers (eCCs) for data transmissions. In one example, the device may transmit control information (e.g., ACK/NACK, CSI, etc.) to a corresponding device using a CCA exempt transmission (CET). In another example, a device may report control information quasi-periodically. For instance, a device may be assigned a specified interval and a control feedback window for reporting control information (e.g., CSI). The window may provide a duration prior and subsequent to the specified interval during which a UE may transmit control information. For example, the device may perform a CCA reserving the channel for a duration that does not include the specified interval but may transmit feedback information based on determining the specified interval falls within the assigned window.

公开(公告)号：US10085283B2

公开(公告)日：2018-09-25

申请号：US14972344

申请日：2015-12-17

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Tao Luo ,  Arumugam Chendamarai Kannan ,  Siddhartha Mallik

IPC: H04W74/08 ,  H04W16/14 ,  H04L5/00 ,  H04B7/06 ,  H04B7/08 ,  H04W72/04

CPC classification number: H04W74/0808 ,  H04B7/0691 ,  H04B7/0695 ,  H04B7/0874 ,  H04B7/088 ,  H04L5/0048 ,  H04W16/14 ,  H04W72/044 ,  H04W74/08

Abstract: Techniques are provided for accessing a shared radio frequency spectrum band by selecting a subset antennas associated with a successful access procedure for accessing the shared radio frequency spectrum. In some examples, a wireless communication device, such as a network node, may perform a listen before talk (LBT) procedure for each of two or more subsets of antennas associated with the network node, and only those subsets of antennas that pass the LBT procedure are used for transmissions during the associated time period, while other antennas are idle, or used for transmissions on another radio frequency spectrum band during the associated time period. In some examples, antennas of a wireless communication device may perform an access procedure utilizing beamforming capabilities of associated antennas to determine one or more different spatial directions that may provide access to the shared radio frequency spectrum band.

公开(公告)号：US20180139018A1

公开(公告)日：2018-05-17

申请号：US15637555

申请日：2017-06-29

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha Mallik ,  Xiaoxia Zhang ,  Taesang Yoo ,  Aleksandar Damnjanovic ,  Juan Montejo

IPC: H04L5/00 ,  H04W8/00 ,  H04W48/16 ,  H04W28/18 ,  H04J3/06 ,  H04W40/24 ,  H04L29/08

CPC classification number: H04L5/0035 ,  H04J3/0602 ,  H04L5/0078 ,  H04L67/04 ,  H04W8/005 ,  H04W16/14 ,  H04W28/18 ,  H04W40/244 ,  H04W48/16 ,  H04W56/001 ,  H04W74/0808

Abstract: Network discovery and synchronization for new radio (NR) shared spectrum (NR-SS) is discussed for a wireless network having a super frame configuration on a shared spectrum shared between a plurality of network operators. A base station may obtain a discovery preamble from a plurality of network entities within the wireless network, wherein each of the plurality of network entities belongs to one or more of the plurality of network operators and shares the super frame configuration. The base station detects the timing of the super frame configuration using the discovery preamble and may then synchronize the base station to the super frame configuration according to the detected timing.