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51.发明申请公开(公告)号：US20220110137A1
公开(公告)日：2022-04-07
申请号：US17492441
申请日：2021-10-01
发明人： Tianyang Bai , Tao Luo , Junyi Li
摘要： Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for adapting a configuration for transmitting or receiving a semi-persistent transmission to minimize self-interference when appropriate and maximize throughput. A first device and a second device may determine whether the semi-persistent transmission overlaps in a time domain with a dynamic transmission. If the semi-persistent transmission overlaps in the time domain with the dynamic transmission, the first device and the second device may use a full-duplex configuration to transmit or receive the semi-persistent transmission. Alternatively, if the semi-persistent transmission fails to overlap in a time domain with a dynamic transmission, the first device and the second device may use a half-duplex configuration to transmit or receive the semi-persistent transmission.
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公开(公告)号：US20220109551A1
公开(公告)日：2022-04-07
申请号：US17492235
申请日：2021-10-01
发明人： Tianyang Bai , Tao Luo , Junyi Li
摘要： Methods, systems, and devices for wireless communications are described. A first device may release an uplink resource associated with a semi-persistent uplink transmission during a portion of a transmission time interval based at least in part on a condition. For example, the first device may determine that a buffer associated with the first device satisfies a buffer threshold (e.g., a threshold amount of temporarily stored uplink data) during a first temporal period. The buffer may temporarily store uplink data associated with the semi-persistent uplink transmission. The first device may, as a result, transmit, to a second device, a feedback message including an indication that the first device skips the semi-persistent uplink transmission based on releasing the uplink resource.
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公开(公告)号：US11251849B2
公开(公告)日：2022-02-15
申请号：US16991782
申请日：2020-08-12
发明人： Sungwoo Park , Kiran Venugopal , Tianyang Bai , Wooseok Nam , Tao Luo
摘要： Methods, systems, and devices for wireless communications are described. A first device may transmit, to a second device, reference signals using combinations of analog beamforming parameters over multiple cycles. The reference signals may be transmitted for different combinations of transmit beamforming parameters and receive beamforming parameters over different cycles of the multiple cycles. The first device may receive, from the second device over the multiple cycles, a set of reports. Each report may indicate combinations of analog beamforming parameters selected for the analog beamforming parameters at the second device. Each combination of analog beamforming parameters may correspond to different cycles of the multiple cycles. The first device may set, for each radio frequency (RF) chain of a plurality of RF chains associated with the first device, a corresponding combination of analog beamforming parameters, and communicate with the second device via two or more beams based on the setting.
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公开(公告)号：US11201661B2
公开(公告)日：2021-12-14
申请号：US16660328
申请日：2019-10-22
发明人： Kiran Venugopal , Makesh Pravin John Wilson , Jung Ho Ryu , Tianyang Bai , Tao Luo , Xiaoxia Zhang
摘要： Disclosed are techniques for beam failure recovery in a wireless communications system. In an aspect, a user equipment (UE) detects a beam failure of a first downlink beam received at the UE from a base station, wherein the first downlink beam is a primary downlink beam for a first cell supported by the base station, sends, to the base station, on a supplementary uplink (SUL) beam, a message including an indication of the beam failure and an identification of a second downlink beam to replace the first downlink beam as the primary downlink beam for the first cell, and, based on the base station configuring the second downlink beam as the primary downlink beam for the first cell, establishes an uplink beam for the first cell based on properties of the second downlink beam.
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公开(公告)号：US20210367728A1
公开(公告)日：2021-11-25
申请号：US17326100
申请日：2021-05-20
发明人： Sungwoo PARK , Wooseok NAM , Kiran VENUGOPAL , Tianyang Bai , Tao Luo
IPC分类号： H04L5/00
摘要： This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, related to techniques for multiple transmission and reception point (TRP) transmission of channel state information reference signal (CSI-RS) resources. In one aspect, a user equipment (UE) can receive a CSI-RS resource including a first CSI-RS port on a first beam from a first cell of a network entity, the CSI-RS resource including a second CSI-RS port of the second cell on a second beam from a second cell of the network entity. In another aspect, a network entity can transmit, on a first beam from a first cell to a UE, a CSI-RS resource including a first CSI-RS port of the first cell, and transmit, on a second beam from a second cell to the UE, the CSI-RS resource including a second CSI-RS port of the second cell.
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公开(公告)号：US20210359812A1
公开(公告)日：2021-11-18
申请号：US17318985
申请日：2021-05-12
发明人： Tianyang Bai , Wooseok Nam , Sungwoo Park , Kiran Venugopal , Tao Luo , Junyi Li , Jung Ho Ryu , Qian Zhang , Ling Ho Ding
摘要： Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit, to a base station, a UE capability to receive a first portion of a tracking reference signal (TRS) and a second portion of the TRS, the first portion and the second portion associated with a TRS pattern. The UE may receive, from the base station, an indication of the TRS pattern, where the TRS pattern includes the first portion of the TRS pattern and the second portion of the TRS pattern. The UE may receive one or more TRSs according to the first portion of the TRS pattern and the second portion of the TRS pattern.
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公开(公告)号：US11166172B2
公开(公告)日：2021-11-02
申请号：US16456949
申请日：2019-06-28
发明人： Kiran Venugopal , Makesh Pravin John Wilson , Junyi Li , Tianyang Bai , Yan Zhou , Tao Luo
摘要： Aspects of the present disclosure provide techniques to improve reliability and robustness for millimeter wave (mmW) systems in fifth generation (5G) wireless communications technology (also referred to as new radio (NR)). Specifically, the present disclosure provides techniques to allow the base station to group a plurality of mmW beams for communication with the user equipment (UE) such that the selected beam(s) for communication are independent and uncorrelated. The selection of beams ensure macro-diversity in that the joint blocking probability of the selected beam(s) may be minimized and the susceptibility to blockage is reduced in comparison to the current systems.
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公开(公告)号：US20210329582A1
公开(公告)日：2021-10-21
申请号：US17231519
申请日：2021-04-15
发明人： Tianyang Bai , Wooseok Nam , Junyi Li , Tao Luo
摘要： Methods, systems, and devices for wireless communications are described. A user equipment (UE) may select a candidate pattern from a set of patterns for reference signals used to track phase error. The UE may transmit an indication of the selected pattern to a base station and receive, from the base station at least in part in response to the transmitted indication of the selected pattern, an indication of a configuration for the reference signals used to track phase error, the configuration indicating a pattern of the set of patterns, a number of reference signal groups, and a number of samples per reference signal group. The UE may receive the reference signals used to track phase error according to the indicated configuration.
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公开(公告)号：US20210321343A1
公开(公告)日：2021-10-14
申请号：US17203105
申请日：2021-03-16
发明人： Jung Ho Ryu , Junyi Li , Sony Akkarakaran , Tao Luo , Tianyang Bai , Kiran Venugopal , Ling Ding , Qian Zhang
摘要： Methods, systems, and devices for wireless communications are described. Sidelink UEs may be configured with a synchronization reference signal that may be used by the UEs to synchronize time and frequency resources. A first and second UE may perform a beam sweeping procedure to identify transmit and receive beams to use for communications between the UEs. A synchronization reference signal procedure may be initiated and the first UE may receive a sidelink synchronization reference signal from the second UE using the established receive beam. The UEs may align time and frequency resources for communications between the UEs and the UEs may communicate via the sidelink channel based on the time synchronization, frequency synchronization, or both, determined using the sidelink synchronization signal. In some cases, a sidelink UE may receive multiple synchronization reference signals from multiple sidelink UEs simultaneously, where each synchronization reference signal may include a UE identifier.
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公开(公告)号：US20210321341A1
公开(公告)日：2021-10-14
申请号：US17185457
申请日：2021-02-25
发明人： Jung Ho Ryu , Sony Akkarakaran , Junyi Li , Tao Luo , Tianyang Bai , Kiran Venugopal , Qian Zhang , Ling Ding
IPC分类号： H04W56/00
摘要： Techniques, systems, and devices for wireless communications are described. A user equipment (UE) may be in communication with a first and second transmitting device (e.g., by sidelink communication links). The UE may receive, from the first transmitting device, a first reference signal on a first set of resources. The UE may additionally receive, from the second transmitting device, a second reference signal on a second set of resources that overlap in the time domain with the first set of resources. In some cases, the first and second set of resources may additionally overlap in the frequency domain. The UE may determine synchronization information for time tracking or frequency tracking of sidelink communications with the first and second transmitting devices based on the first and second reference signals. The UE may communicate with the first and second transmitting devices based on the synchronization information for time tracking or frequency tracking.
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