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公开(公告)号：US20200153497A1
公开(公告)日：2020-05-14
申请号：US16683072
申请日：2019-11-13
Applicant: MEDIATEK INC.
Inventor： Lung-Sheng Tsai , Cheng-Rung Tsai , Weidong Yang
IPC: H04B7/06 , H04W24/10 , H04B17/336
Abstract: Apparatus and methods are provided multiple transmission. In one novel aspect, TCI-state indication for non-coherent joint transmission (NCJT) channel station information (CSI) reporting is provided. The UE receives NCJT from at least a first transmission from a first transmission point (TRP) and a second transmission from a second TRP, determines a receiving (RX) spatial filter information for the NCJT and acquires channel state information (CSI) according to a report setting based on the determined RX spatial filter to simultaneously acquire at least two channel measurement resources (CMRs) and one interference measurement resource (IMR), wherein at least one CMR is from the first TRP and at least one CMR is from the second TRP. In one embodiment, the RX spatial filter information is determined based on a group-based beam reporting procedure performed by the UE. In another embodiment, the RX spatial filter information is determined based on TCI-state received from the wireless network.
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公开(公告)号：US20200052822A1
公开(公告)日：2020-02-13
申请号：US16654201
申请日：2019-10-16
Applicant: Mediatek Inc.
Inventor： Lung-Sheng Tsai , Weidong Yang
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 determines priority levels of a plurality of messages based on at least one predetermined rule. The plurality of messages contain channel state information to be reported to a base station. The at least one predetermined rule specifies that a message including an indicator indicating at least one of a beam selection at a particular dimension and an orthogonal beam group selection has a priority level higher than a priority level of a message including an indicator indicating at least one of a beam direction from a group of beam candidates or co-phasing between two sets of antennas for two polarizations. The UE sends, to the base station, one or more messages of the plurality of messages based on the priority levels of the plurality of messages.
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公开(公告)号：US10560169B2
公开(公告)日：2020-02-11
申请号：US15933610
申请日：2018-03-23
Applicant: MediaTek Inc.
Inventor： Weidong Yang , Lung-Sheng Tsai
Abstract: A user equipment (UE) utilizes a first group of antenna ports at the UE for transmitting and receiving while utilizing a second group of antenna ports for receiving but not transmitting. The UE transmits to a base station (BS) a sounding reference signal (SRS) via the first group of antenna ports through a first channel of a communication link between the UE and the BS. The UE receives from the BS a channel state information reference signal (CSI-RS) via the first and second groups of antenna ports through the first channel and a second channel of the communication link. The UE determines an estimated channel response and a matrix such that a product of the matrix and a channel response of the first channel approximates a channel response of the second channel. The UE transmits to the BS a CSI feedback indicating at least the matrix.
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公开(公告)号：US10523290B2
公开(公告)日：2019-12-31
申请号：US16129774
申请日：2018-09-12
Applicant: MediaTek Inc.
Inventor： Weidong Yang , Lung-Sheng Tsai , Bo-Si Chen
IPC: H04B7/0456 , H04B7/0404 , H04B7/04
Abstract: Various solutions with respect to codebook-based uplink transmission in wireless communications are described. A user equipment (UE) constructs a precoder to be used to wirelessly communicate with a network node of a wireless network. The UE then performs an uplink (UL) transmission to the network node using the precoder via one or more of a plurality of antennas of the UE.
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公开(公告)号：US10454652B2
公开(公告)日：2019-10-22
申请号：US15227204
申请日：2016-08-03
Applicant: MEDIATEK INC.
Inventor： Lung-Sheng Tsai , Pei-Kai Liao , Yi-Ju Liao , Chien-Hwa Hwang
Abstract: Methods of enabling multiuser superposition transmission (MUST) in LTE systems are proposed. MUST operation allows simultaneous transmission for multiple co-channel users on the same time-frequency resources. A higher-layer signaling is used for configuring a UE to enable MUST in each transmission mode (TM). MUST is a sub-TM of each TM. When a UE is configured by higher layer to enable MUST, the UE will monitor new DCI formats supported by the configured TM with new fields carrying scheduling information of another co-channel UE. Dynamic switching between MUST and non-MUST operation is allowed. Mixed transmission schemes and precoders among co-channel UEs are also supported.
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Patent Agency Ranking
公开(公告)号：US20190289665A1
公开(公告)日：2019-09-19
申请号：US16353491
申请日：2019-03-14
Applicant: MediaTek Inc.
Inventor： Weidong Yang , Chia-Chun Hsu , Yih-Shen Chen , Pavan Santhana Krishna Nuggehalli , Lung-Sheng Tsai , Yuanyuan Zhang
Abstract: A first network node receives downlink signaling from a second network node in a first occasion, received on a first carrier in a first time slot, and a second occasion, which is received either on the first carrier in a second time slot after the first time slot or on a second carrier in the first time slot or the second time slot. A MAC control element (CE) in the downlink signaling received in the first and second occasions contain a first timing padding value and a second timing padding value, respectively. A predetermined time slot is equally indicated by the first time slot plus the first timing padding value as well as by the second time slot plus the second timing padding value. The first network node effects one or more configurations in the predetermined time slot responsive to receiving the downlink signaling in the first and second occasions.
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公开(公告)号：US20190159215A1
公开(公告)日：2019-05-23
申请号：US16190148
申请日：2018-11-14
Applicant: MediaTek Inc.
Inventor： Chao-Cheng Su , Weidong Yang , Tzu-Han Chou , Lung-Sheng Tsai
Abstract: Various examples pertaining to multi-transmit/receive point (TRP) interference control in wireless communications are described. A processor of a user equipment (UE) receives, from a network node, a downlink measurement reference signal and configures an interference measurement resource (IMR) associated with a sounding reference signal (SRS) resource of the UE based on the DL measurement reference signal. The processor measures a channel response of a communication channel between the UE and the network node. The processor also measures an interference using the IMR. The processor then generates a precoder based on the measured channel response and the measured interference. The processor further performs an uplink transmission to the network node using the precoder.
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公开(公告)号：US20190081667A1
公开(公告)日：2019-03-14
申请号：US16129772
申请日：2018-09-12
Applicant: MediaTek Inc.
Inventor： Weidong Yang , Lung-Sheng Tsai , Bo-Si Chen
IPC: H04B7/0456
Abstract: Various solutions with respect to codebook-based uplink transmission in wireless communications are described. A user equipment (UE) receives a signal indicating codebook subset restriction (CBSR) from a network node of a wireless network. The UE selects one or more codewords or a codebook from a master codebook based on the CBSR. The master codebook includes codewords from multiple components. The UE then performs a physical uplink shared channel (PUSCH) transmission to the network node using the one or more codewords or the codebook.
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139.发明申请公开(公告)号：US20190052406A1
公开(公告)日：2019-02-14
申请号：US16101394
申请日：2018-08-11
Applicant: MediaTek Inc.
Inventor： Weidong Yang , Lung-Sheng Tsai
Abstract: Various solutions for blind retransmission for ultra-reliable and low-latency communications (URLLC) with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a physical downlink control channel (PDCCH). The apparatus may receive a plurality of physical downlink shared channels (PDSCHs) according to the PDCCH. The apparatus may decode the plurality of PDSCHs according to the PDCCH. The PDCCH may schedule the plurality of PDSCHs.
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公开(公告)号：US20180302192A1
公开(公告)日：2018-10-18
申请号：US15952661
申请日：2018-04-13
Applicant: Steven Yen-Hsien Liu , MediaTek Inc.
Inventor： Weidong Yang , Lung-Sheng Tsai , Tzu-Han Chou , Yu-Chuan Lin , Bo-Si Chen
Abstract: Techniques and examples of layer mapping, channel state information (CSI) feedback and hybrid automatic repeat request (HARQ) feedback in mobile communications are described. A user equipment (UE) receives from a base station one or more reference signals, which may be non-zero power (NZP) or zero power (ZP), on one or more time-frequency resources indicated by a network via a communication link between the UE and the base station. The UE estimates, based on the receiving, a subspace spanned by a channel response of an interfering signal. The UE determines a precoding matrix indicator (PMI) based on the estimated subspace. The UE transmits to the base station a channel state information (CSI) feedback comprising at least the PMI. The PMI may include at least a first precoder and a second precoder.
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