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公开(公告)号：US11632689B2
公开(公告)日：2023-04-18
申请号：US17461504
申请日：2021-08-30
发明人： Yan Zhou , Tao Luo , Kiran Venugopal , Tianyang Bai
IPC分类号： H04W24/10 , H04B7/0408 , H04W24/08
摘要： Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently determining when to transmit a beam report indicating a new beam for communicating with a base station after a current beam used for communications with the base station fails. In one example, after detecting beam failure, a user equipment (UE) may compare a quality of each candidate beam available for communicating with a base station to a beam identification threshold, and the UE may perform beam reporting based on the comparisons (e.g., refrain from transmitting a beam report if the quality of each of the candidate beams is lower than the beam identification threshold). In another example, after detecting beam failure, a UE may compare a quality of each candidate beam available for communicating with a base station to a beam detection threshold, and the UE may perform beam reporting based on the comparisons.
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公开(公告)号：US11627571B2
公开(公告)日：2023-04-11
申请号：US17175429
申请日：2021-02-12
发明人： Xiaoxia Zhang , Juan Montojo , Kiran Venugopal , Tianyang Bai , Tao Luo , Makesh Pravin John Wilson
IPC分类号： H04W72/04 , H04W72/14 , H04W88/02 , H04L5/00 , H04W72/0446 , H04L1/18 , H04L1/1812
摘要： Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indicator of a feedback window that is offset relative to a beginning transmission time interval (TTI) of a set of consecutive TTIs. The consecutive TTIs may include a set of aggregated slots or may correspond to a multi-TTI grant. The feedback window may include multiple control channel occasions interspersed within a duration of the set of consecutive TTIs. The UE may receive a transport block within a first TTI of the set of consecutive TTIs and transmit, within a control channel, feedback to indicate whether the transport block was successfully received.
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公开(公告)号：US11617168B2
公开(公告)日：2023-03-28
申请号：US16987000
申请日：2020-08-06
发明人： Sungwoo Park , Wooseok Nam , Tao Luo , Kiran Venugopal , Tianyang Bai , Xiaoxia Zhang
IPC分类号： H04W72/04 , H04L5/00 , H04B7/08 , H04W72/0446
摘要： Methods, systems, and devices for wireless communications are described. A base station may use beamforming to transmit control and data transmissions to a set of user equipments (UEs). A base station may transmit downlink control information (DCI) to UEs that may indicate a set of resource allocations in which the base station may schedule a data transmission, and a respective transmission configuration indicator (TCI) state. The TCI state may indicate which transmission beam the base station may use to transmit a data transmission in a particular resource allocation. The UE may receive and decode the DCI and identify resource allocation information and an index that may indicate one or more TCI states being used for transmitting a broadcast or unicast transmission to the UE within a resource allocation. The UE may select one or more of the resource allocations to monitor for, and subsequently receive, the data transmission.
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公开(公告)号：US11589343B2
公开(公告)日：2023-02-21
申请号：US17119739
申请日：2020-12-11
发明人： Tianyang Bai , Yan Zhou , Tao Luo , Kiran Venugopal , Junyi Li
IPC分类号： H04W72/04 , H04L5/00 , H04W72/0453
摘要： Certain aspects of the present disclosure relate to methods and apparatus for updating beam information across a plurality of component carriers (CCs) via downlink control information (DCI). An exemplary method, performed by a user equipment (UE), generally includes receiving, from a network entity, a downlink control information (DCI) for an update for at least of a beam or path loss (PL) reference signal (RS) activation and applying the update across at least one of a group of component carriers (CCs) or bandwidth parts (BWPs) within the group of CCs.
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公开(公告)号：US11589325B2
公开(公告)日：2023-02-21
申请号：US17212781
申请日：2021-03-25
发明人： Jung Ho Ryu , Sony Akkarakaran , Kapil Gulati , Tao Luo , Junyi Li , Ling Ding , Tianyang Bai , Qian Zhang , Kiran Venugopal
摘要： Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may determine whether to transmit a sidelink timing synchronization signal to a second UE based at least in part on a sidelink zone in which the first UE is located and a sidelink zone in which the second UE is located. The first UE may selectively transmit the sidelink timing synchronization signal to the second UE based at least in part on determining whether to transmit the sidelink timing synchronization signal to the second UE. Numerous other aspects are provided.
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公开(公告)号：US11576145B2
公开(公告)日：2023-02-07
申请号：US17111768
申请日：2020-12-04
发明人： Vasanthan Raghavan , Jung Ho Ryu , Junyi Li , Tianyang Bai
摘要： Methods, systems, and devices for wireless communications are described that allow for a first user equipment (UE) to forward a transmission from a second UE to a base station. The forwarding techniques may include the first UE performing a decoding procedure on a message received from the second UE via a sidelink communications link. Based on the results of the decoding procedure, the first UE may select an amplify and forward (AF), decode and forward (DF), or a combination thereof to forward the message from the second UE to the base station. The base station may receive the forward messages and, in some cases, a message directly from the second UE, and may determine decoding weights to use to jointly decode the two messages received at the base station.
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公开(公告)号：US11546046B2
公开(公告)日：2023-01-03
申请号：US17006300
申请日：2020-08-28
发明人： Tianyang Bai , Juergen Cezanne , Vasanthan Raghavan , Jung Ho Ryu , Ashwin Sampath , Junyi Li
摘要： Systems, apparatuses, and methods for enhancement for amplify-and-forward relay. Instead of merely passing received signal from a source, relay may equalize the received signal based on reference signal contained in the received signal, before amplifying and transmitting the signal to a destination. Compared to amplify-and-forward, equalize-and-forward may compensate the received source signal for various imperfections such as channel distortions and phase errors, using demodulation reference signal and phase tracking reference signal. The relay may apply Fast Fourier Transform (FFT) to equalize the signal in tone domain.
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公开(公告)号：US11522656B2
公开(公告)日：2022-12-06
申请号：US17089627
申请日：2020-11-04
发明人： Tianyang Bai , Juergen Cezanne , Sundar Subramanian , Junyi Li
摘要： An apparatus for wireless communication selects a recommendation for the need. The apparatus selects the resource to transmit a phase tracking reference signal based on a condition of a communication system. The apparatus performs at least one of transmitting an indication of the selected recommendation for the resource to a second wireless communication device or transmitting at least one of information or a reference signal to the second device to assist the second device in determining the resource. In an aspect, the selection may be made based on receiving a request for a recommendation from the second wireless communication device or the transmitting the at least one of the information or the reference signal are based on a request received.
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公开(公告)号：US20220386327A1
公开(公告)日：2022-12-01
申请号：US17718229
申请日：2022-04-11
发明人： Tianyang Bai , Yan Zhou , Tao Luo , Junyi Li
摘要： Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a transmission configuration indicator (TCI) state to use for communications with a network entity after switching between TCI modes (e.g., a joint TCI state mode and a separate TCI states mode for uplink transmission and downlink reception). A UE may autonomously switch between the TCI modes based on a trigger event, and may send an indication to a network entity of the trigger event prior to communicating. A UE may identify a TCI configuration with unconfigured power control parameters. The UE may determine a common power control configuration for communicating with a network entity based on applying a rule to the TCI configuration to determine the power control parameters.
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公开(公告)号：US20220368581A1
公开(公告)日：2022-11-17
申请号：US17727378
申请日：2022-04-22
发明人： Xiaoxia Zhang , Ahmed Abdelaziz Ibrahim Abdelaziz Zewail , Zhifei Fan , Tianyang Bai , Tao Luo , Jing Sun
摘要： Methods, systems, and devices for wireless communications are described. A device may precode a phase tracking reference signal (PTRS) sequence by applying a single discrete Fourier transform (DFT) to the PTRS sequence. The device may map the DFT precoded PTRS sequence to a subset of resources of a set of resources, and may transmit a signal carrying the DFT precoded PTRS sequence. Additionally or alternatively, the device may receive a signal that includes a DFT precoded PTRS sequence, demap the DFT precoded PTRS sequence to a subset of resources of a set of resources, decode the DFT precoded PTRS by applying a single inverse DFT (IDFT) to the DFT precoded PTRS sequence, estimate a phase error based on the decoding, and apply a phase error correction to a set of additional symbols associated with the signal based on the estimated phase error.
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