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公开(公告)号:US10924225B2
公开(公告)日:2021-02-16
申请号:US16529534
申请日:2019-08-01
Applicant: MEDIATEK INC.
Inventor: Cheng-Rung Tsai , Chiou-Wei Tsai
Abstract: A method can include receiving one or more downlink control informations (DCIs) that are associated with first downlink transmissions belonging to a first hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback group at a user equipment (UE) in a wireless communication system, receiving a first request that indicates a first group index (GI) of the first HARQ-ACK feedback group and a first HARQ-ACK transmission opportunity (TxOP), and transmitting first acknowledge bits for acknowledging receptions of downlink transmissions belonging to the first HARQ-ACK feedback group over the first HARQ-ACK TxOP indicated by the first request.
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公开(公告)号:US20200245353A1
公开(公告)日:2020-07-30
申请号:US16749763
申请日:2020-01-22
Applicant: MEDIATEK INC.
Inventor: Cheng-Rung Tsai , Chiou-Wei Tsai
Abstract: Aspects of the disclosure further provide an apparatus and a method for wireless communication. The apparatus includes processing circuitry that receives, from a base station (BS), a downlink (DL) grant scheduling an uplink (UL) transmission to the BS. The DL grant indicates a first type of channel access procedure for the UL transmission. The processing circuitry performs a channel access procedure for the UL transmission according to the first type of channel access procedure indicated by the DL grant.
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公开(公告)号:US20200053798A1
公开(公告)日:2020-02-13
申请号:US16536508
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, on an unlicensed carrier and from a base station, a downlink signal including Listen-Before-Talk (LBT) parameters, the downlink signal being a non-physical layer signal. The UE performs an LBT operation based on the LBT parameters. The UE transmits an uplink signal to the base station when the LBT operation is successful.
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公开(公告)号:US20200053637A1
公开(公告)日:2020-02-13
申请号:US16536611
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 detects a discovery reference signal on an unlicensed carrier. The UE determines timing information of a base station based on a location of the discovery reference signal in a transmission opportunity window of the base station. The UE determines resource elements of a down link control channel transmitted by the base station based on the timing information. The UE decodes the down link control channel.
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公开(公告)号:US20230156486A1
公开(公告)日:2023-05-18
申请号:US17966636
申请日:2022-10-14
Applicant: MEDIATEK INC.
Inventor: Cheng-Rung Tsai , Yi-Ru Chen
CPC classification number: H04W16/28 , H04L5/0051 , H04W24/10
Abstract: A beam group reporting method is proposed. The network node may allocate a report configuration for the UE and transmit the allocated report configuration to the UE. The UE may perform the measurement based on the report configuration from the network node and determine at least one beam group based on a resource set associated with the report configuration and the measurement result. Each beam group may comprise two reference-signal (RS) resources respectively associating with different physical cell indexes (PCIs). Then, the UE may report a report comprising at least one beam group to the network node.
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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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公开(公告)号:US20230044253A1
公开(公告)日:2023-02-09
申请号:US17840860
申请日:2022-06-15
Applicant: MEDIATEK INC.
Inventor: Cheng-Rung Tsai
Abstract: A partial sounding method for sounding-reference-signal (SRS) is proposed. The network node may transmit the report configuration to the user equipment (UE). The UE may determine at least one resource group based on the report configuration and report a report comprising the resource group or resource groups to the network node. The report may comprise an indicator to indicate that a first resource index in the report is associated with the first resource set or the second resource set. The network node may know that the first resource index of the report is associated with which resource set based on the indicator in the report.
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公开(公告)号:US20230008553A1
公开(公告)日:2023-01-12
申请号:US17902827
申请日:2022-09-03
Applicant: MediaTek INC.
Inventor: Chiou-Wei Tsai , Cheng-Rung Tsai
Abstract: A method for UE capability signaling to support enhancements on resource allocation for Physical Downlink Control Channel (PDCCH) candidate monitoring in NR-U is proposed. A UE transfers UE capability information to a mobile communication network. The UE capability information includes information indicating whether the UE supports Control Resource Set (CORESET) configuration with a Resource Block (RB) offset. The UE receives resource allocation configuration of an unlicensed cell from the mobile communication network. The UE monitors PDCCH candidates on the unlicensed cell according to the resource allocation configuration.
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公开(公告)号:US11336403B2
公开(公告)日:2022-05-17
申请号:US16582477
申请日:2019-09-25
Applicant: MEDIATEK INC.
Inventor: Cheng-Rung Tsai , Chun-Hsuan Kuo
Abstract: A method of a hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback mechanism includes receiving at a user equipment (UE) one or more first downlink control informations (DCIs) associated with first downlink transmissions belonging to a first HARQ-ACK feedback group. One of the first DCIs requests one or more second HARQ-ACK feedback groups to be acknowledged over a HARQ-ACK transmission opportunity (TxOP). A HARQ-ACK feedback for the first HARQ-ACK feedback group and the one or more second HARQ-ACK feedback groups is transmitted over the HARQ-ACK TxOP.
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