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公开(公告)号:US20220104044A1
公开(公告)日:2022-03-31
申请号:US17471986
申请日:2021-09-10
Applicant: MEDIATEK INC.
Inventor: Din-Hwa Huang , Tsang-Wei Yu , Hsuan-Li Lin , Wei-De Wu
Abstract: Methods are proposed for UE to perform radio link monitoring (RLM) and beam failure detection (BFD) measurements in a relaxed measurement state with an extended evaluation period for power saving. Different criteria for UE to enter and exit the relaxed RLM/BFD measurement state are proposed. In relaxed measurement state, UE can perform RLM/BFD measurements with an extended evaluation period by a scaling factor K when the serving cell quality is higher than a threshold and/or when the serving cell quality variation is lower than a threshold within a time period.
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公开(公告)号:US11153840B2
公开(公告)日:2021-10-19
申请号:US16831939
申请日:2020-03-27
Applicant: MediaTek Inc.
Inventor: Tsang-Wei Yu , Din-Hwa Huang
IPC: H04W56/00
Abstract: A user equipment terminal (UE) operates in a wireless network. The UE receives, from a base station, timing advance parameter values which indicate a time difference measured by the base station between uplink and downlink for a band occupied by one or more serving cells. The UE calculates a length of a post-measurement gap (post-MG) time period for the one or more serving cells based on the timing advance parameter values. The post-MG time period is after a measurement gap before uplink transmission. The UE then sends an indication of the length of the post-MG time period to the base station.
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公开(公告)号:US11089499B2
公开(公告)日:2021-08-10
申请号:US16835729
申请日:2020-03-31
Applicant: MEDIATEK INC.
Inventor: Hsuan-Li Lin , Tsang-Wei Yu
Abstract: Apparatus and methods are provided for candidate beam detection (CBD) in DRX mode. In one novel aspect, the CBD evaluation period uses the uniformed scaling factor and the base period for the CBD evaluation period is the same when no DRX is configured and when the DRX is configured with DRX cycle length smaller than or equals to a predefined threshold. In one embodiment, the UE receives DRX configuration including a DRX cycle length, determines a base period for an evaluation period of CBD measurements based on the DRX cycle length and determines a multiplicator for the evaluation period based on a scaling factor and one or more measurement factors, and performs CBD measurements based on the evaluation period, wherein the evaluation period is based on the determined base period and the multiplicator. In one embodiment, the scaling factor is the same for all DRX configurations.
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公开(公告)号:US10856340B2
公开(公告)日:2020-12-01
申请号:US16124443
申请日:2018-09-07
Applicant: MediaTek Inc.
Inventor: Chien-Chun Huang-Fu , Tsang-Wei Yu , Tao Chen , I-Kang Fu
IPC: H04L5/14 , H04W76/10 , H04W48/20 , H04W72/02 , H04L12/24 , H04L29/08 , H04W72/04 , H04W8/18 , H04W48/18 , H04W84/04 , H04W88/02
Abstract: Various examples and schemes pertaining to enhanced cell selection mechanisms in mobile communications are described. A user equipment (UE) performs a cell selection or reselection procedure to select a cell of a wireless network and establishes a wireless connection with the selected cell. In performing the cell selection or reselection procedure, the UE determines a frequency band and a subcarrier spacing (SCS) configuration by checking a profile, and the UE performs the cell selection or reselection procedure in the frequency band based on the SCS configuration.
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公开(公告)号:US20200314675A1
公开(公告)日:2020-10-01
申请号:US16835729
申请日:2020-03-31
Applicant: MEDIATEK INC.
Inventor: Hsuan-Li Lin , Tsang-Wei Yu
Abstract: Apparatus and methods are provided for candidate beam detection (CBD) in DRX mode. In one novel aspect, the CBD evaluation period uses the uniformed scaling factor and the base period for the CBD evaluation period is the same when no DRX is configured and when the DRX is configured with DRX cycle length smaller than or equals to a predefined threshold. In one embodiment, the UE receives DRX configuration including a DRX cycle length, determines a base period for an evaluation period of CBD measurements based on the DRX cycle length and determines a multiplicator for the evaluation period based on a scaling factor and one or more measurement factors, and performs CBD measurements based on the evaluation period, wherein the evaluation period is based on the determined base period and the multiplicator. In one embodiment, the scaling factor is the same for all DRX configurations.
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公开(公告)号:US20190306734A1
公开(公告)日:2019-10-03
申请号:US16366457
申请日:2019-03-27
Applicant: MEDIATEK INC.
Inventor: Dinhwa HUANG , Yih-Shen Chen , Tsang-Wei Yu
Abstract: A method can include receiving measurement configurations for measuring serving/neighboring cells at a user equipment (UE) in a wireless communication system. The measurement configurations can indicate multiple measurement objects (MOs) each with a SSB measurement timing configuration (SMTC) specifying a sequence of SMTC window durations (i.e. SMTC occasions), and a sequence of gap occasions. The MOs can be measured within the SMTC occasions that overlap the gap occasions. The method can further include determining a carrier-specific scaling factor for a target MO in the multiple MOs based on candidate MOs to be measured in each of the gap occasions.
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公开(公告)号:US10111066B2
公开(公告)日:2018-10-23
申请号:US15008281
申请日:2016-01-27
Applicant: MEDIATEK INC.
Inventor: Kuhn-Chang Lin , Tsang-Wei Yu , Chiao Yao Chuang
IPC: H04W72/08 , H04W4/00 , H04W4/70 , H04W24/08 , H04W72/04 , H04L5/00 , H04B17/318 , H04B17/364
Abstract: Methods to support measurements for LTE user equipments are proposed. Due to reduced bandwidth design for cost reduction, resources for UEs are limited to contiguous six physical resource block (PRB) pairs (1.4 MHz). Six or less contiguous PRBs per narrow sub-band located in the whole channel bandwidth is allocated for transmission and reception for UEs. Novel control channel and data channel designs are proposed to make UEs be able to camp on LTE cells. Methods for intra-frequency measurement, for received signal time difference (RSTD) measurement, and for channel quality assessment for UEs are also provided. In one embodiment, UE is allocated with a measurement gap for intra-frequency measurements and RSTD measurements. In another embodiment, UE is configured with a frequency-hopping pattern and receives a PRB pair starting index per subframe for CSI measurement.
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公开(公告)号:US20240048254A1
公开(公告)日:2024-02-08
申请号:US18223732
申请日:2023-07-19
Applicant: MediaTek Inc.
Inventor: Hsuan-Li Lin , Tsang-Wei Yu
IPC: H04B17/318 , H04W24/08
CPC classification number: H04B17/318 , H04W24/08
Abstract: Examples pertaining to determining transmission configuration indicator (TCI) for received signal strength indicator (RSSI) measurement in mobile communications are described. A user equipment (UE) determines a quasi-co-location (QCL) assumption with respect to a received signal strength indicator (RSSI) responsive to not receiving a TCI from a network. The UE also performs an RSSI measurement based on the determined QCL assumption in an expanded Frequency Range 2 (FR2-2) band according to a 3rd Generation Partnership Project (3GPP) specification.
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公开(公告)号:US20230124729A1
公开(公告)日:2023-04-20
申请号:US17952283
申请日:2022-09-25
Applicant: MEDIATEK INC.
Inventor: Hsuan-Li Lin , Tsang-Wei Yu
Abstract: A method of determining the maximum timing change (MTC) based on subcarrier spacing (SCS) configuration for UE measurement and reporting of a neighbor cell in 5 GS is proposed. During measurement procedure, UE first checks whether a neighbor cell has been detectable at least for the time period Tidentity, and becomes undetectable for a period ≤5 seconds, and then the cell becomes detectable again. UE then determines the MTC of the cell according to the SCS configuration of the cell. If the timing change of the cell is MTC, UE reports the event triggered measurement reporting less than a second period (T2) after the measurement event is triggered.
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公开(公告)号:US20230096588A1
公开(公告)日:2023-03-30
申请号:US17945069
申请日:2022-09-14
Applicant: MEDIATEK INC
Inventor: Chih-Kai Yang , Tsang-Wei Yu , Chi-Hsuan Hsieh , Din-Hwa Huang , Ming-Yuan Cheng
Abstract: Apparatus and methods for unknown physical uplink control channel (PUCCH) secondary cell (SCell) activation are proposed. The network node may transmit a PUCCH SCell activation command for an unknown target PUCCH SCell to the UE. After receiving the PUCCH SCell activation command for the unknown target PUCCH SCell, the UE may transmit a layer 1 (L1) report or a layer 3 (L3) report for the unknown target PUCCH SCell to the network node before the unknown target PUCCH SCell is activated. The network node may obtain measurement information based on the L1 report or the L3 report before the unknown target PUCCH SCell is activated. Then, the network node may perform corresponding operations based on the L1 report or the L3 report before the unknown target PUCCH SCell is activated.
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