公开(公告)号：US10136452B2

公开(公告)日：2018-11-20

申请号：US15050404

申请日：2016-02-22

Applicant: QUALCOMM Incorporated

Inventor： Zhengwei Liu ,  Xiaoxia Zhang ,  Wanshi Chen ,  Siddhartha Mallik ,  Aleksandar Damnjanovic ,  Onkar Jayant Dabeer

IPC: H04W16/14 ,  H04W74/08 ,  H04W84/04

Abstract: Additional improvements to the design of enhanced physical random access channel (ePRACH) procedures are disclosed for communications systems having contention-based shared spectrum including unlicensed frequency bands. The additional improvements address the uncertainty of transmission in listen before talk (LBT)-based communications and cooperation with other radio access technologies competing for the same frequency spectrum.

公开(公告)号：US10123313B2

公开(公告)日：2018-11-06

申请号：US14719220

申请日：2015-05-21

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Stefan Geirhofer ,  Peter Gaal ,  Hao Xu ,  Tao Luo

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/024 ,  H04B7/06 ,  H04L1/18 ,  H04L1/00 ,  H04L25/02

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. In an aspect, the apparatus may configure at least a first resource set and a second resource set for a control channel. The first and second resource sets may be configured with a common reference signal configuration. The apparatus also configures first rate-matching parameters for the first resource set and second rate-matching parameters for the second resource set. Then, the apparatus transmits the first rate-matching parameters and the second rate-matching parameters and transmits the control channel using the first resource set and the second resource set.

公开(公告)号：US10122429B2

公开(公告)日：2018-11-06

申请号：US14995453

申请日：2016-01-14

Applicant: QUALCOMM Incorporated

Inventor： Jelena Damnjanovic ,  Wanshi Chen ,  Peter Gaal ,  Aleksandar Damnjanovic

IPC: H04W4/00 ,  H04B7/06 ,  H04W24/10 ,  H04W72/04 ,  H04L5/00

Abstract: Methods, systems, and devices are described for wireless communication in a system that supports enhanced carrier aggregation (eCA). An eCA configuration with a large number of component carriers (CCs) may include CCs grouped into channel state information (CSI) reporting groups. Channel state reports for the CCs in each group may be reported together. In some cases, individual CC reports may be multiplexed into a single report, and in other cases a single channel state report may contain information related to each CC in the group. The combined reports may be transmitted over an uplink control channel or an uplink data channel, or both. Collisions between reports may be resolved based on the reporting type of the groups or the serving cell indices of the CCs in the group.

公开(公告)号：US20180309489A1

公开(公告)日：2018-10-25

申请号：US15955520

申请日：2018-04-17

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Wanshi Chen ,  Shimman Arvind Patel

IPC: H04B7/06 ,  H04L5/00 ,  H04L1/00

CPC classification number: H04B7/0626 ,  H04L1/0031 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/0057 ,  H04L5/0092

Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit downlink control information (DCI) to a user equipment (UE) in a control region of a shortened transmission time interval (sTTI) using an aggregation level or control channel element (CCE) structure, which may depend or vary based on characteristics of the sTTI. For instance, the CCE structure or the aggregation may vary based on a type of reference signal and/or on an sTTI index because the sTTI index may correspond to the number of resource elements available for DCI within the sTTI. The control region of the sTTI may include transmissions of cell-specific reference signals (CRSs), demodulation reference signals (DMRSs), or channel state information reference signals (CSI-RSs). The number of resource elements available for DCI within the control region may depend on whether such reference signals are present or on whether CRS-based or DMRS-based demodulation is employed.

公开(公告)号：US10110405B2

公开(公告)日：2018-10-23

申请号：US15255069

申请日：2016-09-01

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Xiao Feng Wang ,  Wanshi Chen ,  Yongbin Wei ,  Seyed Ali Akbar Fakoorian ,  Alberto Rico Alvarino ,  Madhavan Srinivasan Vajapeyam ,  Jing Lei

IPC: H04L27/26 ,  H04L5/00 ,  H04W74/08 ,  H04B1/713 ,  H04W74/00 ,  H04L29/06 ,  H04B7/06

Abstract: An apparatus may receive signaling from a base station that indicates different tone indices. The apparatus may further transmit a plurality of symbols in a single tone uplink transmission. In an aspect, groups of symbols in the plurality of symbols are transmitted using the different tone indices of the single tone uplink transmission indicated by the received signaling. A second apparatus may signal to at least one user equipment (UE) information associated with different tone indices for use in transmitting a plurality of symbols in a single tone uplink transmission. The second apparatus may further receive the plurality of symbols in the single tone uplink transmission. In an aspect, pairs of symbols in the plurality of symbols are received in different tone indices of the single tone uplink transmission.

公开(公告)号：US20180287734A1

公开(公告)日：2018-10-04

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

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：US20180278384A1

公开(公告)日：2018-09-27

申请号：US15933068

申请日：2018-03-22

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Joseph Binamira Soriaga ,  Hao Xu ,  Wanshi Chen ,  Tingfang Ji ,  Peter Gaal

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

Abstract: Various aspects described herein relate to techniques for multi-cluster uplink transmissions in wireless communications systems. A method, a computer-readable medium, and an apparatus are provided. In an aspect, the method comprises receiving, by a user equipment (UE), information of one or more sounding reference signal (SRS) patterns, generating, by the UE, one or more rate matching parameters based on the information, and transmitting, by the UE, an uplink signal based on the generated one or more rate matching parameters.

公开(公告)号：US10075309B2

公开(公告)日：2018-09-11

申请号：US14617888

申请日：2015-02-09

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Peter Gaal

IPC: H04L27/00 ,  H04W74/00 ,  H04L1/00

CPC classification number: H04L27/0008 ,  H04L1/0003 ,  H04L1/0016 ,  H04L1/0025 ,  H04L1/0029 ,  H04L1/0031 ,  H04W74/006

Abstract: Methods, systems, and devices for indicating a modulation coding scheme (MCS) in LTE are described. A user equipment (UE) may receive downlink control information (DCI) from an evolved Node B (eNB) that includes an uplink grant of resources. The DCI may be configured and have a format that conveys an MCS table reference. The UE may identify the MCS table reference and, based on the reference, identify a legacy MCS table or a non-legacy MCS table. The legacy MCS table may be associated with quadrature amplitude modulation (QAM) up to a first order, and the non-legacy MCS table may be associated with QAM up to a second order, the second order being higher than the first order. The UE may modulate and code information for uplink transmissions using the identified MCS table.

公开(公告)号：US20180242319A1

公开(公告)日：2018-08-23

申请号：US15897999

申请日：2018-02-15

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Wanshi Chen ,  Tao Luo ,  Hao Xu ,  Peter Gaal

IPC: H04W72/04 ,  H04W8/24

CPC classification number: H04W72/0446 ,  H04L1/1812 ,  H04L5/0007 ,  H04L5/0051 ,  H04L5/0053 ,  H04W8/24 ,  H04W52/0216 ,  H04W52/0219 ,  H04W72/042 ,  H04W72/048 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communication are described for improved scheduling and/or scheduling configuration. A base station may receive, from a user equipment (UE), an indication of one or more UE capabilities. The base station may determine, based on the one or more UE capabilities, when a grant to be transmitted is usable by the UE. The base station may transmit the grant to the UE, the grant including an assignment of resources based on when the grant is usable. In some examples, a UE may identify one or more UE capabilities in association with different grant characteristics and transmit, to a base station, an indication of the one or more UE capabilities. The UE may receive, from the base station, a grant having one of the different grant characteristics and including an assignment of resources, the assignment of resources based on the one or more UE capabilities.

公开(公告)号：US10057893B2

公开(公告)日：2018-08-21

申请号：US13889946

申请日：2013-05-08

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Tao Luo ,  Peter Gaal

IPC: H04W72/04 ,  H04W72/12 ,  H04L5/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/16

CPC classification number: H04W72/042 ,  H04L1/0026 ,  H04L1/06 ,  H04L1/1671 ,  H04L5/0035 ,  H04L5/0053 ,  H04L5/0091 ,  H04W72/1289

Abstract: Certain aspects of the present disclosure provide methods and apparatus for facilitating interaction of sounding reference signals (SRS) with uplink channels, while supporting coordinated multipoint (CoMP) transmission/reception operations. One method generally includes receiving, from one or more nodes participating in the CoMP operations with a user equipment (UE), signaling indicating at least one of cell-specific SRS configurations or formats for uplink channels, and determining based, at least in part upon the signaling, whether at least one last symbol of a subframe is available for transmitting one or more of the uplink channels from the UE.