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公开(公告)号：US11848878B2
公开(公告)日：2023-12-19
申请号：US16407435
申请日：2019-05-09
申请人： Mediatek Inc.
IPC分类号： H04L5/00 , H04W72/0446 , H04W72/0453 , H04W72/02 , H04W72/23 , H04W72/51 , H04W72/21 , H04W74/08
CPC分类号： H04L5/0039 , H04L5/0055 , H04W72/0446 , H04W72/0453 , H04W72/21 , H04W72/23 , H04W72/51 , H04W74/0816
摘要： 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 one or more signals transmitted from a base station in a first unit of a set of units contained in a bandwidth part of an unlicensed carrier, the first unit having contiguous frequency resources. The one or more signals indicating that the base station has occupied the first unit for a first time duration and indicating a schedule of a set of slots in the first time duration for communication with the base station. The UE receives, in a first time slot of the set of slots and from the base station, a control channel.
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公开(公告)号：US11653301B2
公开(公告)日：2023-05-16
申请号：US16537537
申请日：2019-08-10
申请人： MediaTek Inc.
CPC分类号： H04W52/0229 , H04L5/0051 , H04L5/0055 , H04W8/005 , H04W24/08 , H04W72/14 , H04W74/0808
摘要： Various solutions for wake-up signal and preamble design for mobile communications are described. An apparatus, while in a first mode of operation, receives a wake-up signal (WUS) from a network. In response to receiving the WUS, the apparatus switches to a second mode of operation from the first mode of operation. The apparatus then detects a preamble in downlink (DL) transmissions from the network. In response to detecting the preamble, the apparatus monitors a physical downlink control channel (PDCCH) to check for an uplink (UL) transmission grant for the apparatus from the network.
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公开(公告)号：US11563467B2
公开(公告)日：2023-01-24
申请号：US17394384
申请日：2021-08-04
申请人： MediaTek Inc.
发明人： Lung-Sheng Tsai , Jiann-Ching Guey
IPC分类号： H04B7/02 , H04B7/0417 , H04W24/08 , H04B7/06 , H04B7/0456
摘要： Examples pertaining to precoding-matched channel state information (CSI) feedback in mobile communications are described. An apparatus (e.g., UE) beamforms one or more of a plurality of ports used in reception of a channel state information reference signal (CSI-RS) with one or more precoders that are applied on one or more of the plurality of ports used in reception of a demodulation reference signal (DMRS) or a physical downlink shared channel (PDSCH). The apparatus generates a CSI feedback comprising at least a plurality of channel quality indication (CQIs) with respect to a plurality of hypothesized ranks. The apparatus then transmits the CSI feedback to a network.
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公开(公告)号：US20230007659A1
公开(公告)日：2023-01-05
申请号：US17825424
申请日：2022-05-26
申请人： MEDIATEK INC.
发明人： Chien-Yi Wang , Jiann-Ching Guey
摘要： A method of providing channel state information (CSI) reference signal (RS) configuration is proposed to support high velocity in new radio (NR) systems. A CSI-RS resource can be configured with a bursty period in which the same CSI-RS resource is repeatedly transmitted over time. Any two repetitions of the CSI-RS resource are not overlapped in time. For periodic and semi-persistent CSI-RS, the repetitions of CSI-RS in the bursty period can be signalled by radio resource control (RRC) signaling. For aperiodic CSI-RS, the CSI-RS repetitions in the bursty period can be indicated by the triggering downlink control information (DCI). UE can acquire Doppler-domain information based on the CSI-RS repetition to facilitate high velocity scenarios in 5G NR systems.
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公开(公告)号：US20220321312A1
公开(公告)日：2022-10-06
申请号：US17686791
申请日：2022-03-04
申请人： MEDIATEK INC.
发明人： Tzu-Han Chou , Cheng-Rung Tsai , Jiann-Ching Guey
IPC分类号： H04L5/00
摘要： A partial sounding method for sounding-reference-signal (SRS) is proposed. The network node may transmit higher-layer signal configuring a fractional SRS resource for partial sounding in configured resource blocks (RBs) to user equipment (UE). The UE may determine an SRS sequence length and a frequency-domain starting position of the fractional SRS resource based on the higher-layer signal to increase the SRS capacity.
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公开(公告)号：US11039475B2
公开(公告)日：2021-06-15
申请号：US16377118
申请日：2019-04-05
申请人： MediaTek Inc.
摘要： Techniques and examples of efficient detection of a transmission session in New Radio unlicensed spectrum (NR-U) are described. An apparatus (e.g., user equipment (UE)) detects presence of an indication from a base station of a wireless network in an NR-U. The apparatus determines that a transmission opportunity (TXOP) follows the indication responsive to the detecting. The apparatus then receives a downlink (DL) transmission in the NR-U from the base station during the TXOP.
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公开(公告)号：US20200304159A1
公开(公告)日：2020-09-24
申请号：US16820925
申请日：2020-03-17
申请人： MEDIATEK INC.
发明人： Pei-Kai Liao , Chun-Ming Kuo , Chien-Hwa Hwang , Jiann-Ching Guey
摘要： 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：US20200053798A1
公开(公告)日：2020-02-13
申请号：US16536508
申请日：2019-08-09
申请人： Mediatek Inc.
摘要： 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
申请人： Mediatek Inc.
摘要： 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：US10542545B2
公开(公告)日：2020-01-21
申请号：US15888250
申请日：2018-02-05
申请人： MEDIATEK INC.
发明人： Chia-Hao Yu , Yuanyuan Zhang , Ming-Po Chang , Jiann-Ching Guey
IPC分类号： H04L1/16 , H04W72/04 , H04B17/318 , H04W74/08
摘要： A method of beam failure recovery for multi-beam operation in wireless communication systems with beamforming is proposed. Specifically, a four-step beam failure recovery procedure is proposed. In a first step of beam failure detection, UE detects a beam failure condition of the original serving beam pair link. 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 beam failure recovery.
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