公开(公告)号：US20220303090A1

公开(公告)日：2022-09-22

申请号：US17593455

申请日：2020-05-15

Applicant: Apple Inc.

Inventor： Yushu ZHANG ,  Chunhai YAO ,  Chunxuan YE ,  Dawei ZHANG ,  Fangli XU ,  Haijing HU ,  Haitong SUN ,  Hong HE ,  Jie CUI ,  Oghenekome OTERI ,  Wei ZENG ,  Weidong YANG ,  Yang TANG ,  Yuchul KIM ,  Yuqin CHEN

IPC: H04L5/00 ,  H04L1/20

Abstract: User equipment (UE) operation in a single frequency network (SFN). The UE may receive one or more transmission configuration indication (TCI) states corresponding to one or more downlink resources, receive a demodulated reference signal (DMRS) wherein the DMRS is quasi co-located (QCLed) with one or more channel state information reference signal (CSI-RS) from multiple cells of a SFN and quasi co-location (QCL) information is included in the one or more TCI and determine a time and frequency offset corresponding to each of the multiple cells based on the CSI-RS.

公开(公告)号：US20220303048A1

公开(公告)日：2022-09-22

申请号：US17593463

申请日：2020-09-15

Applicant: Apple Inc.

Inventor： Weidong YANG ,  Chunhai YAO ,  Chunxuan YE ,  Dawei ZHANG ,  Haitong SUN ,  Hong HE ,  Huaning NIU ,  Jie CUI ,  Manasa RAGHAVAN ,  Oghenekome OTERI ,  Seyed Ali Akbar FAKOORIAN ,  Sigen YE ,  Wei ZENG ,  Yang TANG ,  Yushu ZHANG

IPC: H04L1/00 ,  H04W24/10

Abstract: A base station is configured to receive channel state information (CSI) from a user equipment (UE). The base station transmits configuration information including one or more interference measurement resources (IMRs) allocated for measurement by the UE, receives a reference CSI report from the UE, receives a new CSI report including interference and noise power fluctuation feedback from the UE and selects a modulation and coding scheme (MCS) for the UE based on at least the interference and noise power fluctuation feedback and the reference CSI report.

公开(公告)号：US20220216964A1

公开(公告)日：2022-07-07

申请号：US17430857

申请日：2020-02-16

Applicant: Apple Inc.

Inventor： Bishwarup MONDAL ,  Avik SENGUPTA ,  Alexei DAVYDOV ,  Yushu ZHANG

IPC: H04L5/00

Abstract: Some embodiments of this disclosure include systems, apparatuses, methods, and computer-readable media for a single downlink control information (DCI) signal that supports multi-transmission reception point (TRP) transmissions from different TRPs (e.g., different 5G Node Bs or different antenna panels.) A user equipment (UE) receives a single DCI signal that includes a first transmission configuration indicator (TCI) state of a first TRP, a second TCI state of a second TRP, and a demodulation reference signal (DMRS) port indication value. The UE uses the DMRS port indication value to determine a first DMRS port and a first code division multiplexing (CDM) group of the first TCI state and a second DMRS port and a second CDM group of the second TCI state. The UE receives a multi-Physical Downlink Shared Channel (PDSCH) signal that includes multi-TRP transmissions, and uses the above determinations to decode data from the first and/or the second TCI states.

公开(公告)号：US20220200675A1

公开(公告)日：2022-06-23

申请号：US17599930

申请日：2020-03-30

Applicant: Apple Inc.

Inventor： Manasa RAGHAVAN ,  Jie CUI ,  Yushu ZHANG ,  Andrey CHERVYAKOV ,  Yang TANG

IPC: H04B7/06

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.

公开(公告)号：US20220191720A1

公开(公告)日：2022-06-16

申请号：US17593108

申请日：2020-12-15

Applicant: APPLE INC.

Inventor： Jie CUI ,  Hong HE ,  Dawei ZHANG ,  Chunhai YAO ,  Chunxuan YE ,  Haitong SUN ,  Weidong YANG ,  Wei ZENG ,  Yuchul KIM ,  Yushu ZHANG ,  Zhibin WU ,  Yang TANG

IPC: H04W24/08 ,  H04L5/00

Abstract: Methods and apparatus are provided for searcher resource coordination between NR mobility based measurement and LTE (E-UTRA) PRS based measurement without measurement gap in EN-DC mode or NE-DC mode. Other embodiments are also provided for searcher resource coordination between NR PRS measurement and LTE (E-UTRA) PRS measurement without measurement gap in EN-DC mode or NE-DC mode. Further embodiments provide for searcher resource coordination between NR or LTE (E-UTRA) PRS measurement and NR mobility measurement without measurement gap in EN-DC mode or NE-DC mode.

公开(公告)号：US20220167424A1

公开(公告)日：2022-05-26

申请号：US17441181

申请日：2020-05-04

Applicant: Apple Inc.

Inventor： Yushu ZHANG ,  Gang XIONG ,  Hong HE ,  Sergey SOSNIN

IPC: H04W74/08 ,  H04W52/36 ,  H04W52/16 ,  H04W72/12

Abstract: Techniques are provided for implementing power control in a 2-step random access channel (RACH) procedure, including implementing power control during MsgA transmission of the 2-step RACH procedure. For example, a user equipment (UE) determines a transmission power for a physical uplink shared channel (PUSCH) transmission based on a transmission power of a physical random access channel (PRACH) preamble that is associated with the PUSCH transmission during the 2-step RACH procedure. The UE further performs the 2-step RACH procedure using the determined transmission power of the PUSCH to establish a connection to the wireless network.

公开(公告)号：US20220116252A1

公开(公告)日：2022-04-14

申请号：US17421984

申请日：2020-01-09

Applicant: Apple Inc.

Inventor： Gang XIONG ,  Yushu ZHANG ,  Daewon LEE ,  Alexei DAVYDOV ,  Seunghee HAN ,  Jie Zhu

IPC: H04L27/26 ,  H04L5/00

Abstract: For single carrier based waveform, Discrete Fourier Transform-spread-OFDM (DFT-s-OFDM) and single carrier with a frequency domain equalizer (SC-FDE) can be considered for both DL and UL. For OFDM based transmission scheme including DFT-s-OFDM, a cyclic prefix (CP) is inserted at the beginning of each block, where the last data symbols in a block is repeated as the CP. Typically, the length of CP exceeds the maximum expected delay spread in order to overcome the inter-symbol interference (ISI). For SC-FDE transmission scheme, a known sequence (guard interval (GI), unique word (UW), etc.) can be inserted at both the beginning and end of one block. Further, a linear equalizer in the frequency domain can be employed to reduce the receiver complexity. Compared to OFDM, SC-FDE transmission scheme can reduce Peak to Average Power Ratio (PAPR) and thus allow the use of less costly power amplifier.

公开(公告)号：US20220086765A1

公开(公告)日：2022-03-17

申请号：US17423713

申请日：2020-01-17

Applicant: Apple Inc.

Inventor： Yushu ZHANG ,  Gang XIONG ,  Hong HE

IPC: H04W52/14 ,  H04W74/08 ,  H04W52/36 ,  H04W52/16

Abstract: Systems, apparatuses, methods, and computer-readable media are provided for power control aspects for MsgA physical uplink shared channel (PUSCH). The approach includes determining a transmission power for a PUSCH associated with a physical random access channel (PRACH) in a 2-step random access channel (RACH) mode, where the transmission power for the PUSCH is determined based on a transmission power of the associated PRACH and a power offset. The approach further includes ramping up a transmission power of the PRACH and PUSCH until a maximum transmission power is reached.

公开(公告)号：US20210328636A1

公开(公告)日：2021-10-21

申请号：US17247416

申请日：2020-12-10

Applicant: Apple Inc.

Inventor： Yeong-Sun HWANG ,  Yuan ZHU ,  Yushu ZHANG ,  Huaning NIU ,  Wenting CHANG

IPC: H04B7/0456 ,  H04B7/06 ,  H04B7/08 ,  H04B7/0413 ,  H04L5/00 ,  H04W72/04

Abstract: Example embodiments are directed towards beam formation matching for communications between a receiver and transmitter in a multiple beam Multiple Input Multiple Output (MIMO) system.

公开(公告)号：US20210306867A1

公开(公告)日：2021-09-30

申请号：US17259057

申请日：2019-08-07

Applicant: Apple Inc.

Inventor： Fatemeh HAMIDI-SEPEHR ,  Debdeep CHATTERJEE ,  Bishwarup MONDAL ,  Sergey PANTELEEV ,  Toufiqul ISLAM ,  Yushu ZHANG ,  Alexei Vladimirovich DAVYDOV

IPC: H04W16/28 ,  H04W72/04

Abstract: User equipment (UE) includes processing circuitry coupled to memory. To configure the UE for multi-transmission reception point (TRP) reception, the processing circuitry is to decode radio resource control (RRC) signaling. The RRC signaling includes configuration information configuring a plurality of transmission configuration indication (TCI) states. A media access control (MAC) control element (CE) is decoded, where the MAC CE indicates multiple active TCI states of the configured plurality of TCI states. Multiple received beams are determined using the multiple active TCI states. Downlink information is decoded, where the downlink information originates from multiple TRPs and is received via the determined multiple receive beams associated with the multiple active TCI states.