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公开(公告)号：US10674453B2
公开(公告)日：2020-06-02
申请号：US15643852
申请日：2017-07-07
Applicant: QUALCOMM Incorporated
Inventor： Hao Xu , Peter Gaal , Wanshi Chen , Stefan Geirhofer , Madhavan Srinivasan Vajapeyam
IPC: H04W52/14 , H04W52/24 , H04L5/00 , H04W52/28 , H04W52/54 , H04W52/08 , H04W52/10 , H04W52/36 , H04W52/50 , H04W52/32 , H04W52/46 , H04B7/024 , H04W74/08
Abstract: Techniques for performing path loss (PL) compensation in coordinated multipoint (CoMP) systems are provided. A method for wireless communications by a user equipment (UE) is provided. The method generally includes selecting, from a plurality of transmission points involved in uplink (UL) coordinated multipoint (CoMP) operations with the UE, a transmission point to associate with for path loss (PL) compensation, and adjusting power of one or more transmissions based on path loss measured based on the selected transmission point.
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公开(公告)号：US10439782B2
公开(公告)日：2019-10-08
申请号：US15499725
申请日：2017-04-27
Applicant: QUALCOMM Incorporated
Inventor： Stefan Geirhofer , Tao Luo , Wanshi Chen , Peter Gaal , Hao Xu , Kapil Bhattad , Tingfang Ji
Abstract: Certain aspects of the present disclosure provide techniques for implicitly linking aperiodic channel state information (A-CSI) reports to CSI-reference signal (CSI-RS) resources. In an aspect, the UE may be instructed to report on specific CSI-RS resource(s) via explicit signaling in the UE grant. Other aspects disclose techniques for implicit CSI-RS resource selection by the UE that require fewer signaling resources. Instead of explicitly signaling CSI-RS resources to the UE, the UE may implicitly select CSI-RS resource for CSI feedback reporting based on information known to the UE, e.g. a subframe on which a reporting request is received. This may reduce the impact of the additional signaling in the UE grant.
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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
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.
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公开(公告)号：US09924498B2
公开(公告)日：2018-03-20
申请号：US13794757
申请日：2013-03-11
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Stefan Geirhofer , Peter Gaal , Tao Luo , Hao Xu
CPC classification number: H04W72/0406 , H04L1/0026 , H04L1/0028 , H04L1/1861 , H04L27/2613 , H04W48/10 , H04W48/20
Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in which a cell identifier is selected based on one or more properties associated with received downlink control information (DCI), where the properties may not be exclusively associated with determining a cell identifier. The cell identifier may be selected from a plurality of cell identifiers received through radio resource control signaling. The properties of the DCI may include a type of download control channel, a type of subframe and a type of DCI format used to provide the DCI.
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35.发明申请公开(公告)号：US20180070347A1
公开(公告)日：2018-03-08
申请号：US15810528
申请日：2017-11-13
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Peter Gaal , Stefan Geirhofer , Hao Xu
Abstract: Certain aspects provide methods and apparatus for wireless communications. One example method generally includes receiving a shared channel within a subframe, determining the same precoding may be used across resource blocks belonging to the same precoding resource block group (PRG) of the shared channel, and processing the shared channel based on the determination.
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Patent Agency Ranking
公开(公告)号：US20180027500A1
公开(公告)日：2018-01-25
申请号：US15643852
申请日：2017-07-07
Applicant: QUALCOMM Incorporated
Inventor： Hao Xu , Peter Gaal , Wanshi Chen , Stefan Geirhofer , Madhavan Srinivasan Vajapeyam
Abstract: Techniques for performing path loss (PL) compensation in coordinated multipoint (CoMP) systems are provided. A method for wireless communications by a user equipment (UE) is provided. The method generally includes selecting, from a plurality of transmission points involved in uplink (UL) coordinated multipoint (CoMP) operations with the UE, a transmission point to associate with for path loss (PL) compensation, and adjusting power of one or more transmissions based on path loss measured based on the selected transmission point
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公开(公告)号：US09756627B2
公开(公告)日：2017-09-05
申请号：US14719208
申请日：2015-05-21
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Stefan Geirhofer , Peter Gaal , Hao Xu , Tao Luo
CPC classification number: H04W72/042 , H04B7/024 , H04B7/0626 , H04L1/0038 , H04L1/0067 , H04L1/1812 , H04L5/001 , H04L5/0035 , H04L5/0048 , H04L5/0053 , H04L25/0204 , H04W72/044
Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. In an aspect, the apparatus may determine whether a starting symbol of an enhanced physical downlink control channel (EPDCCH) is an initial symbol in a subframe based on an EPDCCH configuration. Based on the determination, the apparatus may refrain from decoding a subset of legacy control channels in the subframe when the starting symbol of the EPDCCH is the initial symbol in the subframe. The legacy control channel may comprise at least one of a physical control format indicator channel (PCFICH), a physical hybrid-ARQ indicator channel (PHICH), or a combination thereof.
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38.发明授权公开(公告)号：US09755706B2
公开(公告)日：2017-09-05
申请号：US13923067
申请日：2013-06-20
Applicant: QUALCOMM Incorporated
Inventor： Stefan Geirhofer , Wanshi Chen , Hao Xu , Peter Gaal
CPC classification number: H04B7/024 , H04L5/001 , H04L5/0035 , H04L5/0057 , H04L25/0224 , H04L25/03891
Abstract: Certain aspects of the present disclosure provide methods and apparatus for joint support of coordinated multipoint (CoMP) operations and carrier aggregation (CA). One method generally includes receiving signaling indicating a configuration, from a set of possible configurations, that defines how the UE is to communicate with one or more base stations (BSs) using coordinated multipoint (CoMP) operations on one or more component carriers (CCs) and communicating in accordance with the configuration.
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39.发明申请ANTENNA TIME OFFSET IN MULTIPLE-INPUT-MULTIPLE-OUTPUT AND COORDINATED MULTIPOINT TRANSMISSIONS 有权多输入多输出和协调多点传输中的天线时间偏移公开(公告)号：US20150131634A1
公开(公告)日：2015-05-14
申请号：US14602027
申请日：2015-01-21
Applicant: QUALCOMM Incorporated
Inventor： Tao Luo , Stefan Geirhofer , Peter Gaal
CPC classification number: H04L5/0035 , H04B7/024 , H04B7/0417 , H04B7/063 , H04B7/0665 , H04B7/0671 , H04B7/0673 , H04B17/104 , H04B17/24 , H04L5/0051 , H04L5/0053 , H04W72/0406 , H04W72/0413 , H04W72/0446
Abstract: A method for wireless communication is provided which includes receiving first and second signals transmitted from first and second antennas, respectively, determining a time offset between the first and second antennas based on the first and second signals, and reporting information regarding the time offset, including information regarding the time offset as being above or below a predetermined threshold. Another method for wireless communication is provided which includes generating channel state information feedback based on an assumption that the time offset is being compensated at a transmitter side. Yet another method for wireless communication is provided which includes receiving information regarding a time offset between multiple transmit antennas, including information regarding the time offset as being above or below a predetermined threshold, and adapting downlink transmissions to account for the time offset.
Abstract translation: 提供了一种用于无线通信的方法，包括分别接收从第一和第二天线发送的第一和第二信号，基于第一和第二信号确定第一和第二天线之间的时间偏移，以及报告关于时间偏移的信息，包括 关于时间偏移的信息高于或低于预定阈值。 提供了另一种用于无线通信的方法，其包括基于在发射机侧补偿时间偏移的假设来生成信道状态信息反馈。 提供了另一种用于无线通信的方法，其包括接收关于多个发射天线之间的时间偏移的信息，包括关于时间偏移的信息高于或低于预定阈值，以及适配下行链路传输以考虑时间偏移。
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公开(公告)号：US20140112168A1
公开(公告)日：2014-04-24
申请号：US13773316
申请日：2013-02-21
Applicant: QUALCOMM INCORPORATED
Inventor： Wanshi Chen , Peter Gaal , Hao Xu , Yongbin Wei , Stefan Geirhofer
IPC: H04B7/04
CPC classification number: H04W72/042 , H04B7/0413 , H04B7/046 , H04B7/0602 , H04B7/0613 , H04B7/0615 , H04B7/0619 , H04B7/0634 , H04B7/0684 , H04B7/0697 , H04B7/0802 , H04J11/005 , H04L5/0048 , H04L5/0051 , H04L5/0073 , H04L5/14 , H04L25/0206
Abstract: Enhanced sounding reference signal (SRS) transmissions for multiple input, multiple output (MIMO) operation are disclosed in which a user equipment (UE) detects an observed interference level for each receiver chain of the UE. In response to an imbalance, the UE precodes a SRS targeting downlink operation to indicate the imbalance. The UE then transmits the precoded SRS. In alternative aspects, the precoded SRS vector may be determined by an evolved nodeB (eNB). In such aspects, the eNB determines the precoded SRS vector targeting downlink operations for the served UEs, wherein the determined precoded SRS vector includes determining the precoded SRS vector on a per UE basis, enabling the precoded SRS vector for either one or both of frequency division duplex (FDD) systems and time division duplex (TDD) systems, or enabling the precoded SRS vector for aperiodic SRS only. The eNB then transmits the determined precoded SRS vector to the UE.
Abstract translation: 公开了用于多输入多输出（MIMO）操作的增强的探测参考信号（SRS）传输，其中用户设备（UE）检测UE的每个接收机链的观测到的干扰等级。 响应于不平衡，UE预编码针对下行链路操作的SRS以指示不平衡。 然后，UE发送预编码的SRS。 在替代方面，预编码的SRS向量可以由演进节点B（eNB）确定。 在这些方面中，eNB确定针对所服务的UE的针对下行链路操作的预编码的SRS矢量，其中所确定的预编码的SRS矢量包括在每个UE的基础上确定预编码的SRS矢量，使得能够对分频中的一个或两者进行预编码的SRS矢量 双工（FDD）系统和时分双工（TDD）系统，或仅使经过预编码的SRS矢量用于非周期性SRS。 然后，eNB将确定的预编码的SRS向量发送给UE。
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