公开(公告)号：US10574388B2

公开(公告)日：2020-02-25

申请号：US15943533

申请日：2018-04-02

Applicant: QUALCOMM Incorporated

Inventor： Heechoon Lee ,  Peter Gaal ,  Jing Sun ,  Wanshi Chen

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

Abstract: Techniques for monitoring for control information in sets of downlink control channel resources are described, where multiple sets of downlink control channel resources may overlap. The described techniques include monitoring for one or more search spaces in a set of downlink control channel resources by rate matching downlink control channel resources independently of other sets of downlink control channel resources. Alternatively, overlapping sets of downlink control channel resources may be rate-matched accounting for reference signals of overlapping sets of downlink control channel resources.

公开(公告)号：US10560304B2

公开(公告)日：2020-02-11

申请号：US16030319

申请日：2018-07-09

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Jing Sun ,  Tamer Kadous

IPC: H04L27/36 ,  H04L27/38 ,  H04W16/28 ,  H04W72/04 ,  H04J3/02

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. More particularly, aspects of the present disclosure provide multiplexing schemes which may be suited for the single carrier waveform. For example, some techniques and apparatuses described herein permit multiplexing of multiple, different data streams without destroying the single-carrier properties of the waveform. Additionally, or alternatively, some techniques and apparatuses described herein may provide unequal error protection, unequal bandwidth allocation, and/or the like as part of the multiplexing schemes. Examples of multiplexing schemes described herein include in-phase/quadrature (I/Q) multiplexing, superposition quadrature amplitude modulation (QAM) based at least in part on layered bit mapping, polarization division multiplexing of QAM with superposition coding, and frequency division multiplexing using UE-specific beams.

公开(公告)号：US10555331B2

公开(公告)日：2020-02-04

申请号：US14957417

申请日：2015-12-02

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Jing Sun

IPC: H04W72/12 ,  H04L5/00 ,  H04L1/00 ,  H04W72/04

Abstract: Methods, systems, and devices are described for resource scheduling for different services in a wireless communications system. A base station or a user equipment (UE) operating within a wireless communication system may, for example, communicate using two or more different configurations of resource (e.g., symbol) duration, while maintaining a common tone spacing, bandwidth, transmission time interval (TTI) designation, or the like. For instance, an orthogonal frequency division multiplexing (OFDM) symbol may be subdivided or segmented, and each segment, which may include a cyclic prefix, may be utilized as a resource unit.

公开(公告)号：US20200037361A1

公开(公告)日：2020-01-30

申请号：US16508610

申请日：2019-07-11

Applicant: QUALCOMM Incorporated

Inventor： Kaushik Chakraborty ,  Xiaoxia Zhang ,  Jing Sun ,  Kapil Bhattad ,  Tao Luo

IPC: H04W74/08 ,  H04W72/14 ,  H04L5/00 ,  H04W16/14

Abstract: Wireless communications systems and methods related to communicating random access messages are provided. A method includes communicating, by a first wireless communication device with a second wireless communication device, mode information for determining whether to perform a listen-before-talk (LBT) mode for a random access procedure. The method also includes communicating, by the first wireless communication device with the second wireless communication device, a random access message based on the mode information.

公开(公告)号：US20200037305A1

公开(公告)日：2020-01-30

申请号：US16518317

申请日：2019-07-22

Applicant: QUALCOMM Incorporated

Inventor： Wei Yang ,  Wanshi Chen ,  Heechoon Lee ,  Jing Sun ,  Xiaoxia Zhang

IPC: H04W72/04 ,  H04L5/00 ,  H04W72/10

Abstract: Methods, systems, and devices for wireless communications are described. A transmission reception point (TRP) may determine a configuration for downlink transmission of group-common control information associated with a plurality of TRPs. The TRP may identify a set of downlink resources allocated for transmission of the group-common control information. A user equipment (UE) may receive the configuration from at least one TRP of the plurality of TRPs. The UE may monitor downlink resources for reception of the group-common information based on the configuration. The TRP may transmit, and the UE may receive, the group-common control information over the downlink resources. The group-common control information may indicate communication parameters for communications between the UE and at least one TRP.

公开(公告)号：US10548151B2

公开(公告)日：2020-01-28

申请号：US15693654

申请日：2017-09-01

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jing Sun

IPC: H04W72/12 ,  H04W72/04

Abstract: Wireless communications systems and methods related to asynchronous medium sharing are provided. A first wireless communication device transmits a first channel reservation message to reserve a transmission opportunity (TXOP) in a shared spectrum. The first wireless communication device transmits a second channel reservation message during the TXOP. The first wireless communication device communicates, with a second wireless communication device, data over the shared spectrum during the TXOP.

公开(公告)号：US10548118B2

公开(公告)日：2020-01-28

申请号：US15592850

申请日：2017-05-11

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Juan Montojo ,  Jing Sun ,  Seyedkianoush Hosseini

IPC: H04W72/04 ,  H04L5/00 ,  H04L5/14 ,  H04L1/18

Abstract: Methods, systems, and devices for wireless communication are described. Data may be received during transmission time intervals (TTIs) that have a short duration relative to other TTIs. The short-duration TTIs may occur within or overlap a longer duration TTI, such as a subframe. Feedback responsive to the data may be generated and assigned for transmission during an uplink TTI according to a feedback timing or delay, which may be selected to reduce latency or balance the payload size of uplink messages sent during the assigned uplink TTI. Data and feedback assignments in short-duration TTIs may be configured based on a time division duplexing (TDD) configuration for some TTIs (e.g., subframes). TTIs that are a Long Term Evolution (LTE) subframe, an LTE slot, and a duration of two LTE symbol periods may be supported. Portions of special TTIs may be used for transmissions according to shorter-duration TTIs.

公开(公告)号：US20200022168A1

公开(公告)日：2020-01-16

申请号：US16506743

申请日：2019-07-09

Applicant: QUALCOMM Incorporated

Inventor： Huilin Xu ,  Jing Sun ,  Heechoon Lee ,  Peter Pui Lok Ang

IPC: H04W72/12 ,  H04W16/14

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive downlink control information within a control resource set (CORESET) configured with a wideband demodulation reference signal (DMRS) and including disjoint segments of resource blocks (RBs). The downlink control information may be located at least partially within a first segment of the disjoint segments and a second segment of the disjoint segments may be exclusive of the downlink control information. The downlink control information may include a grant of a set of resources for a downlink shared channel that overlaps with the CORESET. The UE may determine a rate matching operation for the wideband DMRS for a downlink shared channel for portions of the set of resources that overlap with the second segment of the disjoint segments, and receive the downlink shared channel on the set of resources according to the determined rate matching operation.

公开(公告)号：US20200008131A1

公开(公告)日：2020-01-02

申请号：US16446120

申请日：2019-06-19

Applicant: QUALCOMM INCORPORATED

Inventor： Kaushik Chakraborty ,  Xiaoxia Zhang ,  Jing Sun ,  Tamer Kadous

IPC: H04W48/10 ,  H04W16/14 ,  H04W16/28 ,  H04W72/04 ,  H04W24/08 ,  H04W74/08

Abstract: Wireless communications systems and methods related to initial network access in a network deployed over a downlink unlicensed band paired with one or more UL bands are provided. A first wireless communication device communicates, with a second wireless communication device in a downlink unlicensed band, a first broadcast communication signal during a discovery time period configured based on a network discovery configuration. The first broadcast communication signal includes a configuration for requesting a second broadcast communication signal when there is no second broadcast communication signal detected within the discovery time period. The first wireless communication device communicates, with the second wireless communication device, a request for the second broadcast communication signal based on the configuration. The first wireless communication device communicates, with the second wireless communication device in the downlink unlicensed band, the second broadcast communication signal outside of the discovery time period in response to the request.

公开(公告)号：US10511373B2

公开(公告)日：2019-12-17

申请号：US16512229

申请日：2019-07-15

Applicant: Qualcomm Incorporated

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Jing Sun ,  Andrei Dragos Radulescu ,  Aleksandar Damnjanovic ,  Arumugam Chendamarai Kannan

IPC: H04B7/06

Abstract: Methods, systems, and devices for wireless communication are described that support overriding a beam monitoring pattern for control channel transmissions based on channel conditions between a user equipment and a base station. A base station may select a beam monitoring pattern for transmitting control channel transmissions, which may include a pattern in which two or more beams are used for control channel transmissions. In the event that a first beam of the beams used in the beam monitoring pattern meets certain metrics, the use of one or more additional beams according to the beam monitoring pattern may be overridden and transmissions continued using the first beam. The metrics for continuing use of the first beam may include channel quality metrics, a number of consecutive successful transmissions using the first beam, one or more other metrics, or any combination thereof.