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211.发明授权公开(公告)号：US09775078B2
公开(公告)日：2017-09-26
申请号：US14886719
申请日：2015-10-19
Applicant: QUALCOMM Incorporated
Inventor： Tingfang Ji , Peter Gaal , Gene Fong , Kapil Bhattad , Yongbin Wei
CPC classification number: H04W36/0061 , H04L1/1845 , H04L1/1867 , H04W36/0016 , H04W48/16 , H04W56/001
Abstract: Techniques for mitigating data loss during autonomous system information (SI) reading by a user equipment (UE) are described. For autonomous SI reading, the UE may autonomously determine when to read system information from neighbor cells and may not inform a serving cell. In one design, the UE may autonomously select a SI reading gap for reading system information from a neighbor cell. During the SI reading gap, the UE may suspend reception of downlink transmission from the serving cell, receive system information from the neighbor cell, and maintain capability to transmit on the uplink to the serving cell. In one design, the serving cell may determine SI reading gaps autonomously selected by the UE for reading system information from neighbor cells. The serving cell may communicate with the UE by accounting for the SI reading gaps of the UE, e.g., may suspend communication with the UE during the SI reading gaps.
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公开(公告)号：US09742515B2
公开(公告)日：2017-08-22
申请号：US14450157
申请日：2014-08-01
Applicant: QUALCOMM Incorporated
Inventor： Kapil Bhattad , Yi Huang , Tao Luo , Taesang Yoo
CPC classification number: H04J11/005
Abstract: Aspects of the disclosure are related to identifying whether an apparatus (e.g., base station, access point, etc.) is transmitting using a CRS based transmission scheme or a UE-RS based transmission scheme. Such detection may be necessary for PDSCH interference cancellation (IC) of a neighboring cell since a UE may not know which transmission scheme is used by the neighboring cell. For instance, the UE may know the transmission scheme of the serving cell, but the UE may not know the transmission scheme of a neighboring non-serving cell. As such, aspects of the disclosure provide for a blind detection algorithm to identify or determine a transmission mode or transmission scheme of a neighboring cell to then apply interference cancellation (IC) to an interfering signal received from the neighboring cell.
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公开(公告)号：US09686800B2
公开(公告)日：2017-06-20
申请号：US13829600
申请日：2013-03-14
Applicant: QUALCOMM Incorporated
CPC classification number: H04W72/085 , H04L1/0026 , H04L1/0027 , H04L1/0028
Abstract: Certain aspects of the present disclosure relate to techniques for reporting Channel Quality Indicator (CQI). In certain aspects, a User Equipment (UE) may schedule switch from at least a first set of zero or more antennas used by the UE, to at least one second set of zero or more antennas, wherein the first and second sets differ by at least one antenna. The UE may determine a Channel Quality Indicator (CQI) to be reported from the UE for use at a base station in a subsequent CQI subframe set, based at least on the scheduled switch. The UE may thereafter transmit the CQI to the base station.
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214.发明授权公开(公告)号：US09485773B2
公开(公告)日：2016-11-01
申请号：US13888292
申请日：2013-05-06
Applicant: QUALCOMM INCORPORATED
Inventor： Kapil Bhattad , Ravi Palanki
CPC classification number: H04W72/082 , H04J3/02 , H04J11/005 , H04J11/0069 , H04W16/14 , H04W16/32
Abstract: Techniques for supporting communication in a heterogeneous network are described. In an aspect, communication in a dominant interference scenario may be supported by reserving subframes for a weaker base station observing high interference from a strong interfering base station. In another aspect, interference due to a first reference signal from a first station (e.g., a base station) may be mitigated by canceling the interference at a second station (e.g., a UE) or by selecting different resources for sending a second reference signal by the second station (e.g., another base station) to avoid collision with the first reference signal. In yet another aspect, a relay may transmit in an MBSFN mode in subframes that it listens to a macro base station and in a regular mode in subframes that it transmits to UEs. In yet another aspect, a station may transmit more TDM control symbols than a dominant interferer.
Abstract translation: 描述了用于支持异构网络中的通信的技术。 在一方面，可以通过为较弱的基站预留来自强干扰基站的高干扰的较小的基站来支持主要干扰场景中的通信。 在另一方面，可以通过消除第二站（例如，UE）处的干扰或通过选择用于发送第二参考信号的不同资源来减轻由于来自第一站（例如，基站）的第一参考信号引起的干扰 由第二站（例如，另一个基站）避免与第一参考信号的冲突。 在另一方面，中继器可以以MBSFN模式在其向宏基站收听的子帧中以及在向UE发送的子帧中以常规模式进行发送。 在另一方面，站可以传输比主要干扰源更多的TDM控制符号。
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215.发明授权公开(公告)号：US09480063B2
公开(公告)日：2016-10-25
申请号：US14191017
申请日：2014-02-26
Applicant: QUALCOMM Incorporated
Inventor： Kapil Bhattad , Wanshi Chen , Peter Gaal , Juan Montojo
CPC classification number: H04W72/0426 , H04L5/0032 , H04L25/0226
Abstract: Techniques for receiving reference signals from multiple nodes and determining channel state information (CSI) for the nodes are disclosed. A user equipment (UE) may determine and report CSI for the multiple nodes to support data transmission to the UE. The nodes may transmit reference signals based on different configurations. The configuration for each node may indicate when, where, and how the node transmits its reference signal. The UE may determine CSI for different nodes and/or different combinations of nodes based on the reference signals transmitted by these nodes as well as an indication of which subframes to use to determine each CSI reported by the UE. The UE may report different CSIs for different subframes and may receive data transmission sent by a single node or a combination of nodes based on the reported CSIs.
Abstract translation: 公开了用于从多个节点接收参考信号并确定节点的信道状态信息（CSI）的技术。 用户设备（UE）可以确定并报告多个节点的CSI以支持向UE的数据传输。 节点可以基于不同的配置发送参考信号。 每个节点的配置可以指示节点发送其参考信号的时间，地点和方式。 UE可以基于由这些节点发送的参考信号来确定不同节点和/或节点的不同组合的CSI以及用于确定由UE报告的每个CSI的哪些子帧的指示。 UE可以针对不同的子帧报告不同的CSI，并且可以基于所报告的CSI接收单个节点或节点的组合发送的数据传输。
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Patent Agency Ranking
公开(公告)号：US09363001B2
公开(公告)日：2016-06-07
申请号：US14565124
申请日：2014-12-09
Applicant: QUALCOMM Incorporated
Inventor： Kapil Bhattad , Peter Gaal
CPC classification number: H04B7/0486 , H04B7/0478 , H04B7/0617 , H04B7/0671 , H04L5/0023 , H04L25/03343 , H04L2025/03426
Abstract: A method and apparatus of wireless communication are disclosed. The wireless communication performs pilot signal transmissions using a first precoding matrix for user equipment specific pilot signals, the pilot signal transmissions having a first transmission rank. The wireless communication also performs data transmissions using a second precoding matrix for data when the data transmissions have a second transmission rank less than the first transmission rank, in which the second precoding matrix includes a transformed version of the first precoding matrix. Alternatively, the wireless communication can perform data transmissions using at least two precoding matrices for data when the data transmissions have a second transmission rank less than or equal to the first transmission rank. Accordingly, the precoding matrix used for data is a transformed version of the precoding matrix used for user equipment specific pilot signals.
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217.发明申请公开(公告)号：US20140161043A1
公开(公告)日：2014-06-12
申请号：US14181953
申请日：2014-02-17
Applicant: QUALCOMM Incorporated
Inventor： Tao Luo , Kapil Bhattad , Xiaoxia Zhang , Taesang Yoo , Xiliang Luo , Ke Liu
IPC: H04W56/00
CPC classification number: H04W56/001 , H04J11/005 , H04J11/0069 , H04J11/0093 , H04W24/02 , H04W72/042
Abstract: Methods and apparatus for selecting samples for secondary synchronization signal (SSS) detection are described. Several alternatives are provided for efficient cell identifier detection. In a first alternative, multiple bursts of a signal received from a cell are sampled with non-uniform spacing between sampling intervals to determine a sequence for cell identification. In a second alternative, samples of a first and a second signal received from a stronger cell are cancelled, and a sequence for detecting a weaker cell is determined by reducing effects of the samples of a third signal received from the weaker cell which do not overlap with the primary synchronization signal (PSS) or SSS of the stronger cell. In a third alternative, a sequence for detecting a weaker cell is determined by reducing effects of any sampled bursts that correspond to a high transmission power portion of a signal from a stronger cell.
Abstract translation: 描述了用于选择二次同步信号（SSS）检测的样本的方法和装置。 提供了多种替代方案用于高效的小区标识符检测。 在第一替代方案中，从采样间隔之间以不均匀的间隔对从小区接收的信号的多个突发进行采样，以确定用于小区识别的序列。 在第二替代方案中，从较强小区接收到的第一和第二信号的样本被取消，并且用于检测较弱小区的序列是通过减少从不重叠的较弱小区接收的第三信号的样本的影响来确定的 具有较强小区的主同步信号（PSS）或SSS。 在第三替代方案中，用于检测较弱小区的序列通过减少对应于来自较强小区的信号的高发射功率部分的任何采样突发的影响来确定。
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218.发明授权公开(公告)号：US12289166B2
公开(公告)日：2025-04-29
申请号：US17662019
申请日：2022-05-04
Applicant: QUALCOMM Incorporated
Inventor： Kapil Bhattad , Jing Sun , Tanumay Datta , Ananta Narayanan Thyagarajan , Xiaoxia Zhang
IPC: H04L1/1812 , H04L1/1607 , H04W72/23
Abstract: Hybrid automatic repeat request (HARQ) acknowledgement (ACK) feedback enhancements are disclosed for new radio (NR) unlicensed (NR-U). In the downlink control channel, two sets of identifiers (IDs) may be explicitly or implicitly signaled. The two IDs identify a current set ID and an additional set ID. Where the two IDs match, then the ACK feedback transmitted in the current ACK message will reflect the current transmissions. Otherwise, where the two IDs are different, the additional set ID identifies any previous or different ACK information that should be transmitted for prior transmissions.
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公开(公告)号：US12279306B2
公开(公告)日：2025-04-15
申请号：US17093374
申请日：2020-11-09
Applicant: QUALCOMM Incorporated
Inventor： Pravjyot Singh Deogun , Xiaoxia Zhang , Ozcan Ozturk , Jing Sun , Kapil Bhattad , Ananta Narayanan Thyagarajan
IPC: H04W74/08 , H04L5/00 , H04W8/00 , H04W56/00 , H04W74/0808 , H04W74/0833 , H04W80/02
Abstract: Random access channel access and validity procedures are disclosed. In one aspect, the medium access control (MAC) indications multiple random access occasions (ROs) to user equipments (UEs) for random access transmissions. In such aspect, random access failure would only be declared if listen before talk (LBT) procedures for the random access transmission fail on all of the ROs indicated by the MAC layer. Similarly, in additional aspects, a UE will not apply a backoff value for any LBT failures for random access attempts that occur within an LBT time window. In further aspects, a UE may determine the validity of ROs that overlap with a discovery reference signal measurement timing configuration (DMTC) window. In such aspects, the UE may not use overlapping ROs or may determine a portion of the DMTC window that is not used for base station transmissions and declare the overlapping ROs with the unused portion valid.
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公开(公告)号：US12245274B2
公开(公告)日：2025-03-04
申请号：US18057786
申请日：2022-11-22
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Ananta Narayanan Thyagarajan , Xiaoxia Zhang , Kapil Bhattad
IPC: H04W4/00 , H04W72/0446 , H04W72/23 , H04W74/0808
Abstract: This disclosure provides systems, methods and apparatus for a user equipment (UE), operating in a shared spectrum in a connected state or an idle state, to receive a channel occupancy time structure information (COT-SI) which includes one or more of a COT duration, a COT end symbol, and a COT pause indication, in addition to slot format indication for one or more slots. Some aspects described herein define a hierarchical approach to COT structure information (COT-SI) signaling. For example, a UE may be configured with a set of short COT tables using remaining minimum system information (RMSI) signaling and may receive concatenation of COT-SI signaling identifying index values in a control channel corresponding to one or more of the set of COT tables. Based on receiving COT-SI signaling, the UE may communicate in accordance with an occurrence of a COT.
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