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公开(公告)号：US20210144569A1
公开(公告)日：2021-05-13
申请号：US17088836
申请日：2020-11-04
Applicant: QUALCOMM Incorporated
IPC: H04W24/08 , H04B17/336 , H04W8/24
Abstract: Methods, systems, and devices for wireless communications are described. A UE may transmit a capability message to a base station. The capability message may indicate a capability of the UE to monitor a defined number of resources across a set of component carriers (CCs) within a time period. The resources may be channel measurement resources (CMRs) or interference measurement resources (IMRs) for signal to interference plus noise measurement, reference signal (RS) resources for channel state information (CSI) measurement, beam failure detection (BFD), reference signal receive power (RSRP) measurement, link quality monitoring, or different active beams. Based on the capability of the UE, the base station may transmit a monitoring configuration to the UE that indicates a set of resources or active beams for the UE to monitor in the set of CCs. The UE may monitor the defined resources or beams received in the monitoring configuration from the base station.
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公开(公告)号：US20190313370A1
公开(公告)日：2019-10-10
申请号：US16374344
申请日：2019-04-03
Applicant: QUALCOMM Incorporated
Inventor： Tae Min Kim , Lei Xiao , Jae Ho Ryu , Supratik Bhattacharjee , Alberto Rico Alvarino
IPC: H04W72/00
Abstract: Cell-specific reference signal (CRS)-based unicast physical downlink shared channel (PDSCH) transmission is discussed for multicast-broadcast single frequency network (MBSFN) subframes. When one or more CRS-based transmissions are scheduled during an MBSFN subframe in an MBSFN region of a transmission frame, a transmitter can transmit CRS and CRS-based unicast transmissions when no multicast-broadcast transmissions are present in the MBSFN subframe. The transmitter will signal the intent to transmit such CRS-based transmissions, thus, allowing receivers to monitor for the CRS-based transmissions, or ignore monitoring if the receivers are configured in incompatible transmission modes. Additionally, capable receivers may enable CRS-based channel estimation for those MBSFN subframes in the MBSFN region when CRS-based transmission is activated.
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公开(公告)号：US10313167B2
公开(公告)日：2019-06-04
申请号：US15445263
申请日：2017-02-28
Applicant: QUALCOMM Incorporated
Inventor： Alberto Rico Alvarino , Chun-Hao Hsu , Xiao Feng Wang , Peter Gaal , Lei Xiao
Abstract: In order to enable a UE receiving a narrowband signal transmitted using in-band resources to use the LTE reference signals to assist the UE in receiving the narrowband signal using an in-band deployment, a phase rotation employed by the base station may be fixed relative to a known reference position in time. An apparatus for wireless communication at a base station may determine a phase offset for a narrowband signal for transmission using wideband resources, the phase offset having a relationship to a reference point in time and transmit the narrowband signal using the determined phase offset. An apparatus for wireless communication at a UE may receive a narrowband signal having a frequency location within a wideband signal and rotate a symbol of the wideband signal by a per symbol phase offset having a relationship of the phase offset to a reference point in time.
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14.发明授权Method and apparatus to dynamically select UE processing capabilities based on channel impulse response estimates 有权基于信道脉冲响应估计来动态地选择UE处理能力的方法和装置公开(公告)号：US09178562B2
公开(公告)日：2015-11-03
申请号：US13797392
申请日：2013-03-12
Applicant: QUALCOMM Incorporated
Inventor： Aditya Dua , Lei Xiao
IPC: H04B1/00 , H04B1/7115 , H04L25/02 , H04L25/03
CPC classification number: H04B1/7115 , H04L25/0216 , H04L25/03019 , H04L2025/03547 , H04L2025/0377
Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in connection with dynamic selection of a UE receiver. In one example, a communications device is equipped to obtain one or more channel impulse response (CIR) estimates, generate a delay spread metric value that characterizes a multipath delay spread of a channel based on the obtained one or more CIR estimates, and select a receiver option with a first power consumption value, for use by the UE, from a plurality receiver options with different optimal power consumption values, based on the generated delay spread metric value. In an aspect, a comparatively more complex receiver option may be selected when the channel is rich in multipath. In another aspect, a comparatively less complex receiver option may be selected when the channel exhibits flat fading.
Abstract translation: 结合UE接收机的动态选择提供了一种用于无线通信的方法，装置和计算机程序产品。 在一个示例中，通信设备被配备以获得一个或多个信道脉冲响应（CIR）估计，基于获得的一个或多个CIR估计生成表征信道的多径延迟扩展的延迟扩展度量值，并且选择 接收机选项，具有来自具有不同最佳功耗值的多个接收机选项中的UE使用的第一功率消耗值，基于所生成的延迟扩展度量值。 在一方面，当信道丰富的多路径时，可以选择比较复杂的接收机选项。 在另一方面，当信道呈现平坦衰落时，可以选择相对较不复杂的接收机选项。
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公开(公告)号：US12302158B2
公开(公告)日：2025-05-13
申请号：US17903834
申请日：2022-09-06
Applicant: QUALCOMM Incorporated
Inventor： Jing Jiang , Jae Won Yoo , Yongle Wu , Lei Xiao , Hari Sankar , Alexei Yurievitch Gorokhov , Yu Zhang , Wei Yang , Jing Lei
Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a user equipment (UE) and a network entity may utilize multi-port mobility reference signals to assist with spatial based mobility procedures. The UE may receive a reference signal that is associated with multiple antenna ports. The UE may measure a multi-dimensional channel response based on the reference signal. The multi-dimensional channel response may be associated with measured channel metrics corresponding to the multiple antenna ports. The UE may transmit a report that includes a channel measurement vector based on the multi-dimensional channel response. The channel measurement vector may indicate multiple measured channel metrics for one or more dimensions of the multi-dimensional channel response. The network entity may transmit a message that indicates one or more metrics associated with mobility management for the UE based on the report that indicates the channel measurement vector.
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Patent Agency Ranking
16.发明授权公开(公告)号：US11881924B2
公开(公告)日：2024-01-23
申请号：US17444801
申请日：2021-08-10
Applicant: QUALCOMM Incorporated
Inventor： Qunfeng He , Huilin Xu , Awlok Singh Josan , Yong Li , Lei Xiao
CPC classification number: H04B7/0888 , H04B7/0617 , H04B7/0626 , H04W56/001
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration that indicates a channel state information reference signal (CSI-RS) Layer 3 (L3) signal corresponding to a first cell. The UE may select, based at least in part on an angle of arrival (AoA) difference between a first AoA and a second AoA, a UE reception (Rx) beam for receiving the CSI-RS L3 signal, wherein the first AoA is associated with the CSI-RS L3 signal, and wherein the second AoA is associated with a communication corresponding to a second cell. The UE may receive the CSI-RS L3 signal using the UE Rx beam. Numerous other aspects are provided.
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公开(公告)号：US11711830B2
公开(公告)日：2023-07-25
申请号：US17683030
申请日：2022-02-28
Applicant: QUALCOMM Incorporated
Inventor： Mostafa Khoshnevisan , Chenxi Hao , Faris Rassam , Lei Xiao , Tao Luo , Xiaoxia Zhang , Hao Xu , Peter Gaal
IPC: H04L12/28 , H04W72/51 , H04B7/06 , H04W72/0453 , H04W72/044 , H04B7/0456 , H04B7/08 , H04W72/542 , H04J1/16
CPC classification number: H04W72/51 , H04B7/0473 , H04B7/0486 , H04B7/0626 , H04B7/0639 , H04B7/0848 , H04W72/046 , H04W72/0453 , H04W72/542
Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may indicate, to a base station, a capability of the UE to use a channel measurement resource for both a joint transmission hypothesis and a single transmission hypothesis. The UE may receive, based on indicating the capability of the UE, a configuration message indicating a first channel measurement resource that is associated with a first transmission configuration indicator state and that is configured for a first joint transmission hypothesis. The UE may obtain a channel measurement for both the first joint transmission hypothesis and a first single transmission hypothesis using the first channel measurement resource based on the configuration message.
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公开(公告)号：US11057250B2
公开(公告)日：2021-07-06
申请号：US16427045
申请日：2019-05-30
Applicant: QUALCOMM Incorporated
Inventor： Alberto Rico Alvarino , Chun-Hao Hsu , Xiao Feng Wang , Peter Gaal , Lei Xiao
Abstract: In order to enable a UE receiving a narrowband signal transmitted using in-band resources to use the LTE reference signals to assist the UE in receiving the narrowband signal using an in-band deployment, a phase rotation employed by the base station may be fixed relative to a known reference position in time. An apparatus for wireless communication at a base station may determine a phase offset for a narrowband signal for transmission using wideband resources, the phase offset having a relationship to a reference point in time and transmit the narrowband signal using the determined phase offset. An apparatus for wireless communication at a UE may receive a narrowband signal having a frequency location within a wideband signal and rotate a symbol of the wideband signal by a per symbol phase offset having a relationship of the phase offset to a reference point in time.
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19.发明授权公开(公告)号：US09872242B2
公开(公告)日：2018-01-16
申请号：US14606757
申请日：2015-01-27
Applicant: QUALCOMM Incorporated
Inventor： Lei Xiao , Brian Clarke Banister , Amir Farajidana , Alexei Yurievitch Gorokhov
CPC classification number: H04W48/20 , H04B7/0417 , H04B7/0478 , H04L5/0035 , H04L5/0057 , H04L5/0073 , H04W24/10 , H04W72/042
Abstract: Certain example embodiments of the present disclosure provide techniques for joint transmission of channel state information reference signals (CSI-RS) from multiple transmission points (TPs) for channel state feedback and/or TP selection. An example method generally includes coordinating with one or more other TPs to jointly transmit a channel state information reference signal (CSI-RS) to a user equipment (UE); signaling a reporting restriction to the UE; receiving precoding matrix indicator (PMI) feedback from the UE based on the jointly transmitted CSI-RS and subject to the reporting restriction; and selecting one or more of the TPs to serve based on the PMI feedback.
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20.发明公开公开(公告)号：US20240333561A1
公开(公告)日：2024-10-03
申请号：US18193564
申请日：2023-03-30
Applicant: QUALCOMM Incorporated
Inventor： Jing Jiang , Seyedkianoush Hosseini , Lei Xiao , Vinayak Suresh , Jae Won Yoo
IPC: H04L25/03 , H04W72/0453 , H04W72/20
CPC classification number: H04L25/03828 , H04W72/0453 , H04W72/20
Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may filter data tones (e.g., in edge subbands of an allocated frequency band) to achieve time domain windowing or shaping. Data tones of edge subbands of a configured frequency band may be filtered to shape a waveform such that it does not extend beyond symbol boundaries (e.g., does not result in emission leakage). In some examples, the transmitter may provide an indication of subband frequency domain shaping filters used to the receiver, to support demodulation on the receiver side. In some examples, the transmitter may indicate a demodulation reference signal (DMRS) comb structure (e.g., of the edge subbands) to the receiver, and the receiver may determine or estimate the filters of the subband frequency domain shaping based on the comb structure or the indication of the filters.
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