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51.
公开(公告)号:US20240284376A1
公开(公告)日:2024-08-22
申请号:US18379642
申请日:2023-10-12
Applicant: MediaTek Inc.
Inventor: Chien-Chun Cheng , Wei-De Wu , Yi-Ju Liao , Din-Hwa Huang , Yi-Chia Lo
CPC classification number: H04W56/0075 , H04W52/0229
Abstract: Examples pertaining to synchronization and radio resource management in mobile communications are described. A user equipment (UE) receives a periodic low power synchronization signal (LP-SS) from a network node via a low-power wake-up receiver (LP-WUR) of the apparatus. Then, the UE performs a synchronization based on the periodic LP-SS via the LP-WUR of the apparatus in an event that a main radio of the apparatus is in a power saving mode. The synchronization comprises at least a coarse time synchronization and a coarse frequency synchronization.
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公开(公告)号:US20240040418A1
公开(公告)日:2024-02-01
申请号:US18209764
申请日:2023-06-14
Applicant: MediaTek Inc.
Inventor: Yi-Ju Liao , Din-Hwa Huang , Wei-De Wu , Chien-Chun Cheng
CPC classification number: H04W24/10 , H04L5/0051
Abstract: Examples pertaining to reference signal (RS) enhancements in mobile communications are described. An apparatus (e.g., a user equipment (UE)) may receive a minimum broadcast RS from a network node (e.g., a base station (BS)). Based on the minimum broadcast RS, the apparatus may perform basic downlink (DL) measurement. The apparatus may also receive or transmit an on-demand RS from or to the network node in a case that a triggering condition is fulfilled. Based on the on-demand RS, the apparatus may perform additional DL or uplink (UL) measurement.
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公开(公告)号:US11743867B2
公开(公告)日:2023-08-29
申请号:US17702902
申请日:2022-03-24
Applicant: Mediatek Inc.
Inventor: Lung-Sheng Tsai , Chien-Hwa Hwang , Yi-Ju Liao
IPC: H04L5/00 , H04W72/02 , H04W72/04 , H04W8/24 , H04L29/12 , H04W88/02 , H04W72/12 , H04L25/02 , H04W72/1273 , H04W52/02 , H04L1/00
CPC classification number: H04W72/02 , H04W72/1273 , H04L1/0038 , H04L5/0098 , H04W52/0229
Abstract: A UE determines N1 component carriers on each of which the UE is configured to detect a respective one PDCCH in a slot. The UE determines N2 component carriers on each of which the UE is configured to detect respective at least two PDCCHs in the slot. The UE determines a total Q blind detections of PDCCH that the UE is capable of performing. The UE determines a first predetermined scaling factor X. The UE allocates M1 blind detections of the Q blind detections to be available on each of the N1 component carriers and M2 blind detections of the Q blind detections to be available on each of the N2 component carriers such that (N1*M1+N2*M2) is a largest integer no greater than Q. M2 equals to X*M1. The UE performs blind detections in accordance with the allocations.
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公开(公告)号:US11622284B2
公开(公告)日:2023-04-04
申请号:US16926864
申请日:2020-07-13
Applicant: MEDIATEK INC.
Inventor: Chien-Hwa Hwang , Chien-Chang Li , Yi-Ju Liao , Pei-Kai Liao , Weidong Yang
IPC: H04L5/00 , H04W16/28 , H04W72/044 , H04L1/1829 , H04W72/04 , H04W74/08 , H04B7/06
Abstract: A new design for physical downlink control channel (PDCCH) is proposed for the next generation 5G new radio systems. A UE receives the configuration of a default control resource set (CORESET) in MIB/SIB from its serving base station. The default CORESET contains both common search space and UE-specific search space for candidate PDCCH transmission. A PDCCH in a default CORESET is mapped to physical resource in a distributed or localized manner. Specifically, various REG-to-CCE mapping rules are proposed to improve frequency diversity gain, or frequency selectivity gain, or to reduce latency of PDCCH processing. Further, to facilitate analog beamforming in mmWave systems, the default CORESET is transmitted in a synchronization signal (SS) block associated with a corresponding analog beam direction.
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公开(公告)号:US20230050894A1
公开(公告)日:2023-02-16
申请号:US17860744
申请日:2022-07-08
Applicant: MEDIATEK INC.
Inventor: Wei-De Wu , Yi-Ju Liao , Pei-Kai Liao
Abstract: Method and UE are provided for scheduling for PDCCH PEI detection. In particular, a BS can transmit a higher layer signaling to a UE. The higher layer signaling includes a configuration of at least one configurable PDCCH candidate number for PEI procedure used under a non-active mode. After receiving the higher layer signaling, the UE performs blind decoding under the non-active mode according to the configuration of the at least one configurable PDCCH candidate number.
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56.
公开(公告)号:US11582015B2
公开(公告)日:2023-02-14
申请号:US17198989
申请日:2021-03-11
Applicant: MEDIATEK INC.
Inventor: Chi-Hsuan Hsieh , Yi-Ju Liao , Wei-De Wu
IPC: H04L5/00 , H04L1/18 , H04W72/04 , H04W36/06 , H04W36/18 , H04L1/1867 , H04L1/1812 , H04W72/0453
Abstract: A method for enhancing Bandwidth Part (BWP) operation towards Secondary Cell (SCell) dormancy indication is proposed. A User Equipment (UE) detects a Downlink Control Information (DCI) format including an SCell dormancy indication that indicates an active BWP change for a serving cell. The UE performs BWP switching for the serving cell in response to the DCI format. The UE stops transmission or reception in the serving cell during a time duration from a slot containing a last symbol of the DCI format, wherein the time duration includes a first period of time of delay for the BWP switching and a second period of time of interruption to other active serving cells.
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57.
公开(公告)号:US20220322384A1
公开(公告)日:2022-10-06
申请号:US17689982
申请日:2022-03-08
Applicant: MEDIATEK INC.
Inventor: Chi-Hsuan Hsieh , Yi-Ju Liao , Wei-De Wu , Pei-Kai Liao , Chia-Hao Yu
Abstract: Method and UE are provided for scheduling for CCS from SCell to PCell. In particular, a UE can connect to a PCell and a SCell. A CCS is configured between the PCell and the SCell. According to a UE type, the UE can monitor PDCCHs from both the PCell and the SCell in a same slot when the UE is a first type UE, or ignore the PDCCHs from the SCell in the same slot when the UE is a second type UE.
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公开(公告)号:US20220217683A1
公开(公告)日:2022-07-07
申请号:US17702902
申请日:2022-03-24
Applicant: Mediatek Inc.
Inventor: Lung-Sheng Tsai , Chien-Hwa Hwang , Yi-Ju Liao
Abstract: A UE determines N1 component carriers on each of which the UE is configured to detect a respective one PDCCH in a slot. The UE determines N2 component carriers on each of which the UE is configured to detect respective at least two PDCCHs in the slot. The UE determines a total Q blind detections of PDCCH that the UE is capable of performing. The UE determines a first predetermined scaling factor X. The UE allocates M1 blind detections of the Q blind detections to be available on each of the N1 component carriers and M2 blind detections of the Q blind detections to be available on each of the N2 component carriers such that (N1*M1+N2*M2) is a largest integer no greater than Q. M2 equals to X*M1. The UE performs blind detections in accordance with the allocations.
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公开(公告)号:US11297574B2
公开(公告)日:2022-04-05
申请号:US16861372
申请日:2020-04-29
Applicant: Mediatek Inc.
Inventor: Yi-Ju Liao , Wei-De Wu
Abstract: A UE receives one or more modulation symbols on one or more resource elements prior to an ON duration in a particular DRX cycle in RRC connected mode. The one or more resource elements are allocated to carry a wake-up signal. The UE performs a blind detection of the wake-up signal on the one or more modulation symbols in accordance with a DCI format and a group identifier identifying a group of UEs including the UE. The wake-up signal includes an indication that indicates whether one or more UEs of the group of UEs should monitor a down link control channel in the ON duration. The UE determines whether to operate in a normal state and monitor a down link control channel in the ON duration based on the wake-up signal when the wake-up signal is detected.
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公开(公告)号:US10484986B2
公开(公告)日:2019-11-19
申请号:US16247570
申请日:2019-01-15
Applicant: MEDIATEK INC.
Inventor: Pei-Kai Liao , Yi-Ju Liao
Abstract: A method of two-stage scheduling in downlink control channel is proposed to enhance downlink control information (DCI) forward compatibility and hardware flexibility. The DCI comprises a basic DCI and an extended DCI. The basic DCI provides basic scheduling information of the scheduled data. The extended DCI provides extended scheduling information of the scheduled data channel. The basic DCI can be unicast to a single UE over UE-specific search space. The basic DCI can also be broadcast or multicast to a group of UEs over common search space. UE performs blind detection of the basic DCI only, while the location and size of the extended DCI can be provided by the basic DCI or provided by a higher layer signaling. Cross-slot/subframe and Multi-slot/subframe scheduling can also be applied in the two-stage scheduling.
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