公开(公告)号：US09473906B2

公开(公告)日：2016-10-18

申请号：US14221664

申请日：2014-03-21

Applicant: MEDIATEK INC.

Inventor： Chia-Hao Yu ,  Chia-Chun Hsu ,  Yih-Shen Chen

IPC: H04H20/71 ,  H04W4/08 ,  H04W4/10 ,  H04W36/32 ,  H04W72/00 ,  H04W36/08 ,  H04W76/00 ,  H04W4/06 ,  H04W74/00

CPC classification number: H04W4/08 ,  H04L5/0037 ,  H04L12/185 ,  H04L12/1886 ,  H04W4/06 ,  H04W4/10 ,  H04W24/08 ,  H04W36/0083 ,  H04W36/08 ,  H04W36/30 ,  H04W36/32 ,  H04W72/00 ,  H04W72/005 ,  H04W72/121 ,  H04W74/006 ,  H04W76/40

Abstract: A method of supporting group communication over LTE MBMS is provided. A UE first establishes a unicast Evolved Packet Service (EPS) bearer in an LTE network for group communication. The UE belongs to a communication group having a communication group ID. The UE receives access information from the network for monitoring downlink (DL) multicast traffic of the DL group communication based on a multicast decision. The UE is then ready for monitoring a multicast Multimedia Broadcast Multicast Service (MBMS) bearer for receiving the DL multicast traffic. The multicast MBMS bearer is associated with a Temporary Mobile Group Identifier (TMGI), and wherein the TMGI is associated with the communication group ID. The UE later enters RRC_IDLE mode and releases a radio bearer of the unicast EPS bearer while keep monitoring the multicast MBMS bearer for the DL multicast traffic.

Abstract translation: 提供了一种通过LTE MBMS支持群组通信的方法。 UE首先在用于组通信的LTE网络中建立单播演进分组业务（EPS）承载。 UE属于具有通信组ID的通信组。 UE从网络接收基于多播决定的DL组通信的下行链路（DL）组播流量的接入信息。 然后，UE准备监视用于接收DL多播业务的组播多媒体广播多播服务（MBMS）承载。 组播MBMS承载与临时移动组标识符（TMGI）相关联，并且其中TMGI与通信组ID相关联。 UE随后进入RRC_IDLE模式，并释放单播EPS承载的无线电承载，同时继续监视DL组播业务的组播MBMS承载。

公开(公告)号：US20160095102A1

公开(公告)日：2016-03-31

申请号：US14863492

申请日：2015-09-24

Applicant: MEDIATEK INC.

Inventor： Chia-Hao Yu ,  Ming-Po Chang ,  Aimin Justin Sang

IPC: H04W72/04 ,  H04L5/00 ,  H04W72/08

CPC classification number: H04W72/046 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0632 ,  H04L5/0057 ,  H04W16/28 ,  H04W48/20 ,  H04W72/085 ,  H04W88/02 ,  H04W88/08

Abstract: A method of beam misalignment detection for wireless communication system with beamforming is proposed. To identify a misaligned beam, a relative beam quality degradation is applied by comparing a dedicated beam quality with a reference beam quality. The reference beam favors similar transmission path as the dedicated beam, and has better mobility robustness. In one embodiment, the reference beam is an associated control beam of the dedicated beam. To detect beam misalignment, a first dedicated beam SINR is compared with a second associated control beam SINR.

Abstract translation: 提出了一种具有波束成形的无线通信系统的波束失准检测方法。 为了识别未对准的光束，通过将专用光束质量与参考光束质量进行比较来应用相对光束质量劣化。 参考光束有利于与专用光束相似的传输路径，并且具有更好的移动性鲁棒性。 在一个实施例中，参考光束是专用光束的相关控制光束。 为了检测光束未对准，将第一专用光束SINR与第二相关联的控制光束SINR进行比较。

公开(公告)号：US20140286225A1

公开(公告)日：2014-09-25

申请号：US14221722

申请日：2014-03-21

Applicant: MEDIATEK, INC.

Inventor： Chia-Hao Yu ,  Chia-Chun Hsu ,  Yih-Shen Chen ,  Ju-Ya Chen

IPC: H04W4/06 ,  H04W72/00

CPC classification number: H04W4/08 ,  H04L5/0037 ,  H04L12/185 ,  H04L12/1886 ,  H04W4/06 ,  H04W4/10 ,  H04W24/08 ,  H04W36/0083 ,  H04W36/08 ,  H04W36/30 ,  H04W36/32 ,  H04W72/00 ,  H04W72/005 ,  H04W72/121 ,  H04W74/006 ,  H04W76/40

Abstract: A method of supporting group communication over LTE MBMS is provided. A UE first establishes a unicast Evolved Packet Service (EPS) bearer in an LTE network for group communication. The UE belongs to a communication group having a communication group ID. The UE receives access information from the network for monitoring downlink (DL) multicast traffic of the DL group communication based on a multicast decision. The UE is then ready for monitoring a multicast Multimedia Broadcast Multicast Service (MBMS) bearer for receiving the DL multicast traffic. The multicast MBMS bearer is associated with a Temporary Mobile Group Identifier (TMGI), and wherein the TMGI is associated with the communication group ID. The UE de-multiplexes DL traffic received either from the multicast MBMS bearer or from the unicast EPS bearer into a single group communication application.

Abstract translation: 提供了一种通过LTE MBMS支持群组通信的方法。 UE首先在用于组通信的LTE网络中建立单播演进分组业务（EPS）承载。 UE属于具有通信组ID的通信组。 UE从网络接收基于多播决定的DL组通信的下行链路（DL）组播流量的接入信息。 然后，UE准备监视用于接收DL多播业务的组播多媒体广播多播服务（MBMS）承载。 组播MBMS承载与临时移动组标识符（TMGI）相关联，并且其中TMGI与通信组ID相关联。 UE将从组播MBMS承载或从单播EPS承载接收的DL业务解复用为单组通信应用。

公开(公告)号：US20140029514A1

公开(公告)日：2014-01-30

申请号：US13947379

申请日：2013-07-22

Applicant: MEDIATEK, INC.

Inventor： Chia-Hao Yu ,  Yih-Shen Chen

IPC: H04W24/10

CPC classification number: H04W24/10 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/24

Abstract: An effective SCELL activation procedure is proposed to reduce the SCELL activation time. For carrier aggregation, a secondary cell (SCELL) needs to be configured and then activated before a UE can perform normal operation. In a first embodiment, the UE performs measurements on a list of candidate SCELLs before SCELL configuration. In a second embodiment, the UE performs measurements on a configured SCELL with high priority after the SCELL is configured. In a third embodiment, the UE performs deactivated-state SCELL measurements with adaptive SCELL measurement interval based on a configured measurement cycle and a state machine. Small SCELL activation time allows energy saving and network scheduling gain.

Abstract translation: 提出了一种有效的SCELL激活程序来减少SCELL激活时间。 对于载波聚合，需要配置二次小区（SCELL），然后在UE可以执行正常操作之前激活。 在第一实施例中，UE在SCELL配置之前对候选SCELL的列表进行测量。 在第二实施例中，在配置SCELL之后，UE在配置好的高优先级的SCELL上执行测量。 在第三实施例中，UE基于配置的测量周期和状态机，以自适应SCELL测量间隔执行去激活状态SCELL测量。 小的SCELL激活时间可以节省能源和网络调度增益。

公开(公告)号：US20240283493A1

公开(公告)日：2024-08-22

申请号：US18440998

申请日：2024-02-14

Applicant: MediaTek Inc.

Inventor： Chia-Hao Yu ,  Tzu-Han Chou ,  Jiann-Ching Guey ,  Chin-Kuo Jao ,  Parisa Cheraghi ,  Chun-Chia Tsai

IPC: H04B7/0417 ,  H04B7/0452

CPC classification number: H04B7/0417 ,  H04B7/0452

Abstract: Various solutions for tiered channel information feedback with respect to user equipment and network apparatus in mobile communications are described. An apparatus may determine a first tier channel state information (CSI) based on a first reference signal resource measurement. The apparatus may report the first tier CSI to a network node. The apparatus may determine a second tier CSI based on the first tier CSI and based on a second reference signal resource measurement. The apparatus may report the second tier CSI to the network node. The second tier CSI may be different from the first tier CSI.

公开(公告)号：US11405929B2

公开(公告)日：2022-08-02

申请号：US16585413

申请日：2019-09-27

Applicant: MEDIATEK INC.

Inventor： Cheng-Rung Tsai ,  Guan-Yu Lin ,  Chia-Hao Yu ,  Weidong Yang

IPC: H04L5/00 ,  H04B7/06 ,  H04B7/08 ,  H04W72/08 ,  H04W72/04 ,  H04W76/19

Abstract: Aspects of the disclosure provide an electronic device including a transceiver and processing circuitry. The transceiver can be configured to wirelessly receive at least one signal from a network including a first cell. The at least one signal can indicate a link quality of a wireless link formed between the electronic device and the base station in a first cell. The processing circuitry can be configured to determine whether beam failure occurs on the first cell based on at least one signal quality of the at least one signal. When the beam failure is determined to occur on the first cell, the processing circuitry can be configured to report information of the first cell to the network indicating the beam failure on the first cell.

公开(公告)号：US11201711B2

公开(公告)日：2021-12-14

申请号：US16683089

申请日：2019-11-13

Applicant: MEDIATEK INC.

Inventor： Lung-Sheng Tsai ,  Weidong Yang ,  Cheng-Rung Tsai ,  Jiann-Ching Guey ,  Chia-Hao Yu

IPC: H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04B17/336 ,  H04B7/06 ,  H04W24/10

Abstract: In one novel aspect, configurations for PDCCH transmission and reception with multiple transmission points are provided. The UE configures a PDCCH associated with a CORSET comprising multiple CCEs, partitions the CORSET into multiple TCI-state sets, wherein each TCI state set includes multiple CCE groups associated with corresponding TCI-state, which corresponds to a source TRP, activates one TCI state set, and receives DCI via the PDCCH, wherein the PDCCH is transmitted from at least the first source TRP and the second source TRP, and wherein each source TRP transmits corresponding portion of DCI data mapping to the corresponding first and second CCE group. The CORSET is partitioned in FDM or TDM way. In another novel aspect, a first and a second PDCCH associated with a first and a second TRP are configured for repetition transmission. The second PDCCH configuration is dependent upon the first PDCCH configuration.

公开(公告)号：US10917212B2

公开(公告)日：2021-02-09

申请号：US16536571

申请日：2019-08-09

Applicant: MEDIATEK INC.

Inventor： Chia-Hao Yu ,  Cheng-Rung Tsai ,  Weidong Yang

IPC: H04L5/00 ,  H04W72/04

Abstract: A method of default Quasi-Co-Location (QCL) assumption for Physical Downlink Shared Channel (PDSCH) reception in NR network is proposed. When PDSCH is scheduled by a DCI over PDCCH after a Scheduling Offset, the spatial RX filter for the PDSCH reception can be determined according to a QCL indication conveyed by the DCI. When the Scheduling Offset for PDSCH reception scheduled by DCI is less than a time duration, then a default QCL assumption is applied. UE assumes that the DMRS ports of PDSCH of a serving cell are QCLed with the RS(s) with respect to QCL parameter(s) used for PDCCH QCL indication of a CORESET. The CORESET is associated with a UE-monitored search space in the latest slot with the lowest CORESET-IF on an active BWP on the serving cell.

公开(公告)号：US20190253904A1

公开(公告)日：2019-08-15

申请号：US16260922

申请日：2019-01-29

Applicant: MEDIATEK INC.

Inventor： Cheng-Rung Tsai ,  Chia-Hao Yu ,  Jiann-Ching Guey

IPC: H04W24/08 ,  H04W16/14 ,  H04W72/04 ,  H04W80/02 ,  H04W76/27

CPC classification number: H04W24/08 ,  H04L5/001 ,  H04W16/14 ,  H04W72/0446 ,  H04W72/046 ,  H04W76/27 ,  H04W80/02

Abstract: Aspects of the disclosure provide a method for reception of simultaneously transmitted downlink channels having different spatial quasi-co-location (sQCL) assumptions. The method can include receiving a configuration specifying a control resource set (CORESET) monitoring occasion of a first physical downlink control channel (PDCCH) at a user equipment (UE), receiving a second PDCCH scheduling or activating transmission of a physical downlink shared channel (PDSCH) at the UE, determining whether the PDSCH overlaps the first PDCCH in time domain, determining whether a first spatial quasi-co-location (sQCL) assumption for reception of the first PDCCH and a second sQCL assumption for reception of the PDSCH are different, and prioritizing the reception of the first PDCCH when the PDSCH overlaps the first PDCCH in time domain and the first and second sQCL assumptions are different.

公开(公告)号：US20190082471A1

公开(公告)日：2019-03-14

申请号：US16127457

申请日：2018-09-11

Applicant: Mediatek Inc.

Inventor： Chiou-Wei Tsai ,  Chia-Hao Yu

IPC: H04W74/08 ,  H04L5/00

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 that a random access event has occurred. The UE detects one or more down-link reference signals that are UE-specifically configured or predefined. The UE further selects a first message that is associated with a first down-link reference signal of the one or more down-link reference signals, the first down-link reference signal being quasi-colocated with a first DMRS of a serving control channel of the UE. The UE sends the first message to a base station to request a random access to the base station.