公开(公告)号：US10652918B2

公开(公告)日：2020-05-12

申请号：US15758157

申请日：2016-08-01

申请人： QUALCOMM Incorporated ,  Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Ruiming Zheng

发明人： Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Ruiming Zheng

IPC分类号： H04W72/12 ,  H04L5/00 ,  H04W72/04 ,  H04L27/26 ,  H04L5/14 ,  H04W52/02

摘要： Increased symbol length of uplink pilot time slots (UpPTS) in special subframes is disclosed in which a configuration of a first special subframe may be independent from configuration of a second special subframe in the same frame, such that the first UpPTS of the first special subframe is longer than the second UpPTS of the second special subframe. The second UpPTS of the second special subframe may also be longer than legacy UpPTS length in select configurations. A serving base station may select the special subframe configurations in order to balance sounding reference signal (SRS) capacity for compatible user equipments (UEs) and downlink throughput for legacy UEs. The selected special subframe configurations may be transmitted by the serving base stations. In additional aspects, compatible UEs may be configured with at least two separate SRS power control parameters for use in the additional and legacy UpPTS symbols.

公开(公告)号：US11490413B2

公开(公告)日：2022-11-01

申请号：US16633399

申请日：2018-09-07

申请人： QUALCOMM Incorporated ,  Yu Zhang ,  Hao Xu ,  Chao Wei ,  Peng Cheng ,  Wanshi Chen ,  Peter Gaal ,  Durga Prasad Malladi

发明人： Yu Zhang ,  Hao Xu ,  Chao Wei ,  Peng Cheng ,  Wanshi Chen ,  Peter Gaal ,  Durga Prasad Malladi

IPC分类号： H04W72/14 ,  H04L5/00 ,  H04W72/04

摘要： Certain aspects of the present disclosure generally relate to wireless communication. More particularly, certain aspects of the present disclosure relate to early termination of a downlink channel repetition transmission, early termination of an uplink channel repetition, and/or determination of a plurality of beams for a repetition transmission. Numerous other aspects are provided.

公开(公告)号：US11258564B2

公开(公告)日：2022-02-22

申请号：US16313806

申请日：2017-05-11

申请人： Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  QUALCOMM Incorporated

发明人： Chao Wei ,  Wanshi Chen ,  Peter Gaal

IPC分类号： H04L5/00

摘要： Signaling design for interlaced frequency divisional multiplex (IFDM) demodulation reference signals (DMRS) is discussed in which a dynamic indication is provided to a user equipment (UE) from a serving base station that allows the UE to configure transmission of DMRS according to either a single carrier frequency divisional multiplex (SC-FDM) or IFDM configurations, as indicated by the dynamic indication. The IFDM configuration may be applicable to either regular uplink subframes or within the uplink portion of special subframes. In some aspects, power boosting may be provided for the DMRS in order to equalize transmit power between decimated DMRS transmitted with the data tones. Additional aspects may also provide for different offsets to be used depending on the type of uplink control signal transmitted.

公开(公告)号：US10721119B2

公开(公告)日：2020-07-21

申请号：US15028805

申请日：2014-10-28

申请人： QUALCOMM INCORPORATED ,  Wanshi Chen ,  Chao Wei ,  Peter Gaal ,  Hao Xu ,  Neng Wang

发明人： Wanshi Chen ,  Chao Wei ,  Peter Gaal ,  Hao Xu ,  Neng Wang

IPC分类号： H04L12/24 ,  H04W72/04 ,  H04L5/14 ,  H04L5/00

摘要： Certain aspects of the present disclosure relate to techniques for cross-carrier indication of TDD (Time Division Duplex) UL (Uplink)/DL (Downlink) subframe configuration. A UE may receive a configuration of a first index for a first cell, wherein the first index is mapped to a first position in a Downlink Control Information (DCI) message. The UE may receive the DCI message in a subframe and determine an indication of a UL/DL subframe configuration for the first cell based on the first index and the DCI message. The UE may communicate with the first cell based on the determined UL/DL subframe configuration for the first cell.

公开(公告)号：US10045339B2

公开(公告)日：2018-08-07

申请号：US14910567

申请日：2014-07-17

申请人： QUALCOMM INCORPORATED ,  Chao Wei ,  Wanshi Chen ,  Xiaoxia Zhang ,  Neng Wang ,  Hao Xu ,  Peter Gaal

发明人： Chao Wei ,  Wanshi Chen ,  Xiaoxia Zhang ,  Neng Wang ,  Hao Xu ,  Peter Gaal

IPC分类号： H04W72/04 ,  H04L1/00 ,  H04L1/18 ,  H04L5/00 ,  H04W52/04

CPC分类号： H04W72/0446 ,  H04L1/0073 ,  H04L1/1812 ,  H04L1/1854 ,  H04L1/1861 ,  H04L5/0055 ,  H04W52/04 ,  H04W72/04 ,  H04W72/0406

摘要： Aspects of the present disclosure relate to techniques that may help enable the determination of uplink resource allocation in systems that support dynamic uplink-downlink subframe configurations. An example method generally includes receiving signaling indicating a dynamic uplink-downlink (UL-DL) subframe configuration, determining hybrid automatic repeat request (HARQ) acknowledgment/negative acknowledgment (ACK/NACK) timing based on a reference UL-DL subframe configuration, and determining HARQ resource allocation based on the dynamic UL-DL subframe configuration.

公开(公告)号：US11121752B2

公开(公告)日：2021-09-14

申请号：US15780451

申请日：2016-01-07

申请人： QUALCOMM Incorporated ,  Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Yu Zhang

发明人： Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Yu Zhang

IPC分类号： H04B7/06 ,  H04L5/00 ,  H04W24/10 ,  H04B7/0456 ,  H04W72/08

摘要： Enhanced channel state information (CSI) feedback is disclosed for full dimensional multiple input, multiple output (FD-MIMO) operations. In one aspect, a CSI process is defined that may be used to identify an azimuth and elevation CSI-reference signal (RS) ports. A user equipment (UE) will send a precoding matrix indictor (PMI) report including a precoding matrix indicator (PMI) for the azimuth ports and a PMI for the elevation ports. One of the PMIs is assigned a low rank. The base station will use the two PMIs to create a whole channel precoding matrix. In another aspect, a single CSI process is configured having a plurality of CSI-RS resources. The UE generates channel measurement information for each of the CSI-RS resources, but only sets a CSI report to the base station of a subset of the total number of resources.

公开(公告)号：US10826577B2

公开(公告)日：2020-11-03

申请号：US15531131

申请日：2015-01-19

申请人： QUALCOMM Incorporated ,  Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Yu Zhang

发明人： Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Yu Zhang

IPC分类号： H04B7/0456 ,  H04B7/06 ,  H04B7/17 ,  H04B7/26

摘要： Enhanced channel state information (CSI) feedback is disclosed for full dimensional multiple input, multiple output (FD-MIMO) operations. In one aspect, a single CSI process is defined that is configured with an azimuth and elevation CSI-reference signal (RS) ports. A user equipment (UE) will send a precoding matrix indictor (PMI) report including a precoding matrix indicator (PMI) for the azimuth ports and a PMI for the elevation ports. One of the PMIs is assigned a low rank. The base station will use the two PMIs to create a whole channel precoding matrix. In another aspect, a single CSI process is configured having a plurality of CSI-RS resources. The UE generates channel measurement information for each of the CSI-RS resources, but only sets a CSI report to the base station of a subset of the total number of resources.

公开(公告)号：US20210367724A1

公开(公告)日：2021-11-25

申请号：US16641639

申请日：2017-09-07

申请人： Yu ZHANG ,  Wanshi CHEN ,  Chao WEI ,  Peter GAAL ,  Timo Ville VINTOLA ,  Vishal MAHAJAN ,  Alexei Yurievitch GOROKHOV ,  Amir AMINZADEH GOHARI ,  Alexandros MANOLAKOS ,  Joseph Binamira SORIAGA ,  Valentin Alexandru GHEORGHIU ,  Quaicomm Incorporated

发明人： Yu Zhang ,  Wanshi Chen ,  Chao Wei ,  Peter Gaal ,  Timo Ville Vintola ,  Vishal Mahajan ,  Alexei Yurievitch Gorokhov ,  Amir Aminzadeh Gohari ,  Alexandros Manolakos ,  Joseph Binamira Soriaga ,  Valentin Alexandru Gheorghiu

IPC分类号： H04L5/00 ,  H04B7/0413

摘要： Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a UE capability message, the UE capability message indicating a supported transmit antenna switching (TxAS) capability for each port of the UE. The UE may receive a configuration message indicating an uplink multiple-input/multiple-output (UL MIMO) configuration for the UE, the UL MIMO configuration being based at least in part on the UE capability message. The UE may identify, based at least in part on the configuration message, a sounding reference signal (SRS) configuration to use for transmitting SRSs in conjunction with the UL MIMO communications, the SRS configuration comprising a configuration for transmission by the UE of SRSs using at least one of the two or more ports of the UE, the SRSs transmitted on one or more antennas of the UE selected according to a TxAS configuration for the respective port.

公开(公告)号：US11251842B2

公开(公告)日：2022-02-15

申请号：US16645894

申请日：2018-09-11

申请人： QUALCOMM Incorporated ,  Yu Zhang ,  Chenxi Hao ,  Wanshi Chen ,  Peter Gaal ,  Hao Xu

发明人： Yu Zhang ,  Chenxi Hao ,  Wanshi Chen ,  Peter Gaal ,  Hao Xu

IPC分类号： H04B7/0456 ,  H04B7/06 ,  H04L5/00

摘要： Aspects of the present disclosure relate to techniques for non-codebook based uplink (UL) transmission. In some cases, a user equipment (UE) may signal, to a network entity, capability information of the UE for non-codebook uplink transmissions. The UE may then receive, signaling, from the network entity, indicating a plurality of sounding reference signal (SRS) configurations based at least on the signaled capability information, wherein at least one configuration indicates at least one SRS resource and determine a plurality of precoding candidates, wherein each precoding candidate is associated with a configured SRS resource. The UE may then transmit the SRSs using the associated precoding candidates.

公开(公告)号：US20200244419A1

公开(公告)日：2020-07-30

申请号：US16637067

申请日：2017-08-11

申请人： Alexandros MANOLAKOS ,  Chenxi HAO ,  Yu ZHANG ,  Wanshi CHEN ,  Peter GAAL ,  QUALCOMM Incorporated

发明人： Alexandros Manolakos ,  Chenxi Hao ,  Yu Zhang ,  Wanshi Chen ,  Peter Gaal

IPC分类号： H04L5/00 ,  H04W72/04

摘要： Wireless communication that includes transmission, reception, and configuration of a CSIRS with a configurable band-width is discussed. A base station/gNB may determine a number of antenna ports to be used for wireless communication. The base station/gNB may allocate a first plurality of frequency resources for the transmission of the CSIRS based on the determined number of antenna ports, and may transmit the CSIRS over the first plurality of frequency resources. A mobile device may receive the CSIRS over the first plurality of frequency resources and estimate at least one of channel quality and interference associated with the first plurality of frequency resources based on the received CSIRS.