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公开(公告)号：US20230110955A1
公开(公告)日：2023-04-13
申请号：US17947723
申请日：2022-09-19
Applicant: MEDIATEK INC.
Inventor： Chien-Yi Wang , Jiann-Ching Guey , Lung-Sheng Tsai
IPC: H04W24/10 , H04B17/345
Abstract: Apparatus and method for assistance information transmission and CSI reporting are proposed. The network node may allocate channel state information (CSI) configuration for the UE and transmit the CSI configuration to the UE. The UE may perform CSI measurement based on the CSI configuration from the network node, determine the assistance information based on the CSI measurement result, and transmit the assistance information the network node to improve the downlink (DL) throughput and save the signaling overhead of CSI measurement or CSI reporting.
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公开(公告)号：US20230102742A1
公开(公告)日：2023-03-30
申请号：US17939843
申请日：2022-09-07
Applicant: MEDIATEK INC.
Inventor： Li-Chuan Tseng , Chia-Hao Yu , Cheng-Rung Tsai , Chun-Fan Tsai , Jiann-Ching Guey
IPC: H04W74/08
Abstract: A method of acquiring timing advance (TA) for neighbor cells to reduce latency and interruption for inter-cell mobility is proposed. A UE is configured with a set of active cells for fast cell-switching. To reduce handover interruption, UE performs early RACH for potential target cells and obtains the TA of the potential target cells. In one novel aspect, for overhead reduction, a single RACH preamble may be received by multiple cells. Using a single RACH preamble, UE acquires TA for multiple cells, aiming at reducing the interruption due to RACH during handover. In another novel aspect, UE reports DL reception timing difference between the serving cell and the neighbor cell, and then adjust the TA for the neighbor cell accordingly.
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公开(公告)号：US20230064830A1
公开(公告)日：2023-03-02
申请号：US17885480
申请日：2022-08-10
Applicant: MEDIATEK INC.
Inventor： Chien-Yi Wang , Jiann-Ching Guey , Cheng-Rung Tsai , Wei-Yen Wong
IPC: H04B7/0456 , H04B7/06
Abstract: Method and UE are provided for determining precoder of MIMO system. In particular, a BS can transmit at least one CSI-RS to the UE. The UE can receive the at least one CSI-RS, and estimate at least one covariance matrix of at least one downlink channel matrix according to the at least one CSI-RS at different times and frequencies. Then, the UE can transmit the at least one covariance matrix or at least one parameter associated with the least one covariance matrix to the BS for the BS to reconstruct at least one covariance matrix, and determine a precoder according to the at least one reconstructed covariance matrix.
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44.发明授权公开(公告)号：US11330457B2
公开(公告)日：2022-05-10
申请号：US16043760
申请日：2018-07-24
Applicant: MEDIATEK INC.
Inventor： Chia-Hao Yu , Ming-Po Chang , Jiann-Ching Guey
Abstract: A beam indication (BI) mechanism is proposed to provide user equipment (UE) information of network (NW) beam(s) for later transmission. UE can then select its UE beam(s) for the later transmission based on the BI. In one embodiment, NW provides beam management configuration to UE via Radio Resource Control (RRC) signaling, and then provides beam indication index signaling to UE via MAC-CE or DCI. The beam management configuration comprises a mapping table between network beams and configured reference signal (RS) resources. The beam indication index signaling indicates one or more preferred beam pair links (BPLs). Upon triggering a beam management procedure by the network, UE is able to identify the beam management procedure and selects corresponding UE beam(s) based on the beam management configuration and the beam indication index signaling.
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公开(公告)号：US11218288B2
公开(公告)日：2022-01-04
申请号：US16738071
申请日：2020-01-09
Applicant: Mediatek Inc.
Inventor： Tzu-Han Chou , Weidong Yang , Chao-Cheng Su , Jiann-Ching Guey
Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE receives an indication for transmitting a particular DMRS sequence in an uplink transmission. The particular DMRS sequence is time domain based. The UE generates the particular DMRS sequence. The UE modulates the particular DMRS sequence to obtain a set of symbols. The UE maps a plurality of symbols of the set of symbols to a plurality of subcarriers. The UE transmits the plurality of symbols on the plurality of subcarriers.
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Patent Agency Ranking
公开(公告)号：US11057780B2
公开(公告)日：2021-07-06
申请号：US16536576
申请日：2019-08-09
Applicant: Mediatek Inc.
Inventor： Chiou-Wei Tsai , Jiann-Ching Guey , Chun-Hsuan Kuo , Cheng-Rung Tsai
Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE receives, from a base station, one or more downlink reference signals on an unlicensed carrier. The UE determines that the base station occupies the unlicensed carrier for a predetermined first channel occupancy time based on the one or more downlink reference signals. The UE receives, on the unlicensed carrier and in the predetermined first channel occupancy time, a control burst including a plurality of down link control channels. The UE attempts to decode a first down link control channel directed to the UE from the control burst.
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公开(公告)号：US20210083704A1
公开(公告)日：2021-03-18
申请号：US17108138
申请日：2020-12-01
Applicant: MEDIATEK INC.
Inventor： Pei-Kai Liao , Chun-Ming Kuo , Chien-Hwa Hwang , Jiann-Ching Guey
Abstract: A method of providing over-the-air assistance information for interference cancellation or suppression to the receiver is proposed. Under a first solution, a two-stage DCI (downlink control information) or SCI (sidelink control information) scheduling method is proposed. The set of first-stage DCI or SCI provides a part of scheduling information which is beneficial for interference cancellation or suppression and is broadcasted by a transmitter or scheduler to all receivers. The set of second-stage DCI or SCI includes the remaining scheduling information and is unicasted by a transmitter or scheduler to each receiver. Under a second solution, assistance information DCI for interference cancellation or suppression is broadcasted by a transmitter or scheduler to all receivers.
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公开(公告)号：US20200314810A1
公开(公告)日：2020-10-01
申请号：US16823770
申请日：2020-03-19
Applicant: MediaTek Inc.
Inventor： Cheng-Rung Tsai , Jiann-Ching Guey
Abstract: A user equipment terminal (UE) operates in a wireless network according to a configuration. The UE receives the configuration for a physical downlink control channel (PDCCH), and detects downlink control information (DCI) in the PDCCH. From the DCI, the UE receives control information for a serving cell configured with one or more bandwidth units in a frequency domain. The control information is provided for each bandwidth unit of the serving cell. According to the control information, the UE performs a downlink reception from the serving cell or an uplink transmission to the serving cell.
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公开(公告)号：US10779171B2
公开(公告)日：2020-09-15
申请号：US16127481
申请日：2018-09-11
Applicant: MEDIATEK INC.
Inventor： Chia-Hao Yu , Ming-Po Chang , Chiou-Wei Tsai , Chien-Hwa Hwang , Jiann-Ching Guey
Abstract: A method of beam failure recovery request (BFRQ) transmission is proposed. UE can search for UE-specific control channel in a search space that is signaled specifically for monitoring network response of the BFRQ. Furthermore, configurations indicated specifically for BFRQ can be carried by dedicated signaling such as high-layer radio resource control (RRC) signaling. After successfully rebuilding connection, UE assumes the demodulation reference signal (DMRS) ports of UE-specific control channel to be spatially quasi-co-located (QCL-ed) with the reference signals identified during the beam failure recovery procedure.
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公开(公告)号：US10674383B2
公开(公告)日：2020-06-02
申请号：US16043718
申请日：2018-07-24
Applicant: MEDIATEK INC.
Inventor： Chia-Hao Yu , Yuanyuan Zhang , Ming-Po Chang , Jiann-Ching Guey
Abstract: A method of beam failure recovery request (BFRQ) transmission is proposed. In a first step of beam failure detection, UE detects a beam failure condition of the original serving beam. In a second step of new candidate beam identification, UE performs measurements for candidate beam selection. In a third step of beam failure recovery request (BFRQ) transmission, UE transmits a BFRQ message to BS upon the triggering condition for BFRQ transmission is satisfied. In a fourth step of monitoring BS response, UE monitors BS response to decide the success or failure of the BFRQ transmission attempt. In one advantageous aspect, the BFRQ transmission is over dedicated contention-free PRACH or PUCCH resources or over contention-based PRACH resources. Furthermore, a beam failure recovery timer is used to oversee the initiation and the termination of the BFRQ transmission.
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