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公开(公告)号：US20200351691A1
公开(公告)日：2020-11-05
申请号：US16812252
申请日：2020-03-06
Applicant: Apple Inc.
Abstract: In embodiments, a UE may measure system frame number (SFN)/subframe timing differences between a master eNB (MeNB) and secondary eNB (SeNB) for dual connectivity (DC). When network-based reporting on the SFN/subframe timing offset is used, no new radio access network (RAN) signaling may be needed. However, in the case of multi-vendor deployments, no network coordination via different Operations, Administration, and Maintenance (OAM) for DC may occur. In this case, the network may not be able to obtain SFN/subframe timing offset information. To address this issue, various embodiments disclosed herein include UE-based reporting on SFN/subframe offset between an MeNB and an SeNB.
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公开(公告)号：US10790896B2
公开(公告)日：2020-09-29
申请号：US16410498
申请日：2019-05-13
Applicant: Apple Inc.
Inventor： Hua Li , Yang Tang , Jie Cui , Shuang Tian , Yuhan Zhou
IPC: H04B7/06
Abstract: Systems and methods provide for beam detection in a wireless communication system. An apparatus for a UE may be configured to identify a plurality of CSI-RS resources corresponding to different Tx beams configured for measurement by the UE, measure an L1-RSRP for the plurality of CSI-RS resources, determine a selected Tx beam of the different Tx beams based on measured L1-RSRP values for the plurality of CSI-RS resources, and determine a measurement accuracy of a first L1-RSRP value corresponding to the selected Tx beam based on successful beam detection probability.
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公开(公告)号：US10749587B2
公开(公告)日：2020-08-18
申请号：US16448951
申请日：2019-06-21
Applicant: APPLE INC.
Inventor： Candy Yiu , Jie Cui , Yang Tang , Youn Hyoung Heo
Abstract: A new radio (NR) capable user equipment (UE) to determine whether to skip cellular measurements using s-Measure configuration based on measurements of a synchronization signal (SS) block (SSB) and/or Channel State Information Reference Signal (CSI-RS) using an s-Measure configuration. For example, an s-Measure configuration can include a reference signal received power (RSRP) value and an indicator whether to apply the value to an NR SS block or a CSI-RS. If the value meets or exceeds the measurement for the indicated signal measurement, the s-Measure is satisfied. For example, in an embodiment, the network configures a single s-Measure configuration (e.g., either an NR SS s-Measure configuration or a CSI-RS s-Measure configuration), which when satisfied the UE does not perform further measurements.
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公开(公告)号：US20250150852A1
公开(公告)日：2025-05-08
申请号：US18837415
申请日：2022-02-11
Applicant: APPLE INC.
Inventor： Jie Cui , Hong He , Yang Tang , Qiming Li , Manasa Raghavan , Yuanye Wang , Xiang Chen , Dawei Zhang , Qunfeng He
Abstract: A user equipment (UE) configures radio resource management (RRM) relaxation in extended discontinuous reception (eDRX) in cases with or without a paging transmission window (PTW). The UE determines whether an eDRX cycle is configured as being greater or less than 10.24 seconds; determine whether the UE has met legacy RRM relaxation criteria for a relaxation scaling factor k; and configures RRM relaxation timing based on use of a paging transmission window (PTW) and the relaxation scaling factor k.
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公开(公告)号：US20250142504A1
公开(公告)日：2025-05-01
申请号：US18837318
申请日：2022-02-11
Applicant: APPLE INC.
Inventor： Jie Cui , Manasa Raghavan , Dawei Zhang , Yang Tang , Chunhai Yao , Qiming Li , Xiang Chen , Hong He , Yushu Zhang , Fangli Xu
IPC: H04W56/00 , H04B17/318 , H04W76/28
Abstract: Systems and methods for performing timing advance (TA) validation at a user equipment (UE) for a TA to be used when transmitting a configured grant small data transmission (CG-SDT). Mechanisms for bounding one or more measurement windows during which one or more synchronization signal blocks are measured during a reference signal received power (RSRP) measurement method of the TA validation are discussed, and may be set using information corresponding to timing drift due to relativistic effects, clock differences between a UE and a base station, and/or information about a UE discontinuous reception (DRX) cycle. Further, time interval limitations between various events attendant to such an RSRP measurement method are discussed as being determined using information corresponding to timing drift due to relativistic effects, clock differences between a UE and a base station, information about a DRX cycle used at the UE, and/or a maximum TA timer duration.
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Patent Agency Ranking
公开(公告)号：US12284016B2
公开(公告)日：2025-04-22
申请号：US18475468
申请日：2023-09-27
Applicant: Apple Inc.
Inventor： Manasa Raghavan , Jie Cui , Yushu Zhang , Andrey Chervyakov , Yang Tang
Abstract: Techniques for changing a Transmission Configuration Indication (TCI) state by a user equipment (UE) operating in a wireless communications system are provided. The UE receives a first message including a TCI state change command from a network and determines, based on the first message, whether a time offset/frequency offset (TO/FO) and a reception (Rx) beam for a new TCI state are known by the UE. Based on the determination, the UE calculates a time delay of the UE to be prepared to receive a reference signal with the new TCI state, generates a second message indicating the time delay of the UE for the new TCI state, and transmits the second message to the network.
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公开(公告)号：US12273906B2
公开(公告)日：2025-04-08
申请号：US17439024
申请日：2020-10-12
Applicant: Apple Inc.
Inventor： Haitong Sun , Yushu Zhang , Huaning Niu , Hong He , Wei Zeng , Chunxuan Ye , Oghenekome Oteri , Sigen Ye , Dawei Zhang , Chunhai Yao , Jie Cui , Yang Tang
IPC: H04W72/542 , H04L5/00 , H04W72/0446 , H04W72/23
Abstract: A cellular base station (BS) which transmits more flexible downlink control information (DCI) to the UE, and a UE capable of receiving and processing a received DCI message. The DCI message may have a DCI format of 0_1 or 0_2 and further may comprise an UL-SCH set to 0, a CSI request field of all 0s and an SRS request field having a nonzero value. The DCI message may indicate to the UE that the UE should: 1) transmit an aperiodic SRS corresponding to SRS request; and 2) that the UE should not transmit on the PUSCH. The DCI may include existing fields that specify either a slot offset or beam information useable when transmitting the aperiodic SRS. The base station may also generate a DCI message with an SRS trigger that is targeted to a plurality of UEs in a group, or a plurality of groups of UEs, for greater efficiency.
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公开(公告)号：US12267798B2
公开(公告)日：2025-04-01
申请号：US17813783
申请日：2022-07-20
Applicant: Apple Inc.
Inventor： Ankit Bhamri , Dawei Zhang , Sigen Ye , Wei Zeng , Yang Tang
Abstract: This application relates to wireless communications, including methods and apparatus to manage uplink (UL) transmit switching with multiple timing advance groups (TAGs) for wireless devices. A wireless device is configured to use multiple carriers selected from a set of available carriers that can be associated with different TAGs. When a second set of carriers, used after switching from a first set of carriers, includes carriers that belong to different TAGs, the wireless device determines whether to transmit on one or more first uplink transmission occasions for each of the carriers in the second set of carriers based on whether a first UL transmission occasion for at least one carrier overlaps a switching gap time period. The wireless device can disallow transmission on first UL transmission occasions of one or more carriers to accommodate the overlap.
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公开(公告)号：US12261797B2
公开(公告)日：2025-03-25
申请号：US17755678
申请日：2021-05-11
Applicant: Apple Inc.
Inventor： Jie Cui , Chunxuan Ye , Dawei Zhang , Haitong Sun , Hong He , Huaning Niu , Manasa Raghavan , Qiming Li , Xiang Chen , Yang Tang
Abstract: A user equipment (UE) is configured to determine to perform a sounding reference signal (SRS) transmission with an antenna port switch operation, wherein the SRS transmission with the antenna port switch operation is performed during an SRS transmission occasion comprising one or more symbols of a slot and apply one or more scheduling restriction rules corresponding to the SRS transmission with the antenna port switch to provide one or more scheduling restrictions for the UE, wherein the scheduling restrictions cause the UE to omit performing at least one of transmission operations or reception operations during one or more symbols of the slot or one or more symbols of an adjacent slot.
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公开(公告)号：US12250565B2
公开(公告)日：2025-03-11
申请号：US17440611
申请日：2020-04-08
Applicant: Apple Inc.
Inventor： Haitong Sun , Dawei Zhang , Fangli Xu , Haijing Hu , Jie Cui , Wei Zeng , Yang Tang , Yushu Zhang
Abstract: Some aspects include an apparatus, method, and computer program product for facilitating control messaging for multi-beam communications in 5G wireless communication systems. Nodes of a 5G network may be generate Medium Access Control Control Elements (MAC CEs) to update User Equipment (UE) with different Component Carrier (CC) settings. The MAC CEs may update a list of CCs to reduce messaging overhead and latency. For example, a MAC CE may indicate an update for a Transmission Configuration Indication (TCI) state for a list of CCs. Similarly, a MAC CE may be used to update a spatial relation for a Sounding Reference Signal (SRS) resource set and/or a SRS resource corresponding to a list of CCs. A MAC CE may also be used to update multiple TCI codepoints having one or two TCI states in a multi-Transmission Reception Point (multi-TRP) scenario.
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