公开(公告)号：US20210321279A1

公开(公告)日：2021-10-14

申请号：US17216077

申请日：2021-03-29

Applicant: MediaTek Inc.

Inventor： Chih-Kai Yang ,  Hsuan-Li Lin ,  Tsang-Wei Yu

IPC: H04W24/10 ,  H04L5/00 ,  H04B7/06 ,  H04B17/336 ,  H04W56/00

Abstract: A user equipment terminal (UE) in a wireless network calculates a measurement period for measuring the signal-to-interference-plus-noise ratio (SINR) for a serving cell within a frequency range. The calculation is based on a channel measurement resource (CMR) and an interference measurement resource (IMR). The calculation includes evaluation of a sharing factor P, which is a maximum of PCMR of the CMR and PIMR of the IMR. The PCMR and the PIMR are evaluated, at least in part, based on periodicity of the CMR and the IMR in relation to other periodic measurements performed by the UE. The UE performs a channel measurement and an interference measurement using the CMR and the IMR, respectively, over the measurement period. The UE calculates the SINR based on the channel measurement and the interference measurement; and transmits an SINR measurement report indicating the calculated SINR to a base station.

公开(公告)号：US10932147B2

公开(公告)日：2021-02-23

申请号：US16366457

申请日：2019-03-27

Applicant: MEDIATEK INC.

Inventor： Dinhwa Huang ,  Yih-Shen Chen ,  Tsang-Wei Yu

IPC: H04W24/08 ,  H04W24/10

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.

公开(公告)号：US10911997B2

公开(公告)日：2021-02-02

申请号：US16009515

申请日：2018-06-15

Applicant: MEDIATEK INC.

Inventor： Hsuan-Li Lin ,  Tsang-Wei Yu ,  Chiao Yao Chuang

IPC: H04W36/00 ,  H04L5/00 ,  H04W36/38 ,  H04W72/04

Abstract: Apparatus and methods are provided for RRM measurement in the NR network. In one novel aspect, the RRM measurement is configured with one measurement gap for SS block and CSI-RS. In one embodiment, an extended MGL (eMGL) is configured such that the SS block and CSI-RS is measurement within one measurement gap. In another embodiment, the shorter MGL (sMGL) that is shorter than the standard MGL is configured. In another novel aspect, the CSI-RS is allocated adjacent to the SS blocks such that one measurement gap is configured for both the SS block and CSI-RS measurement. In another novel aspect, the CSI-RS measurement is conditionally configured. In yet another novel aspect, the UE decodes the time index of the SS block conditionally.

公开(公告)号：US10904821B2

公开(公告)日：2021-01-26

申请号：US16401381

申请日：2019-05-02

Applicant: MEDIATEK INC.

Inventor： Yih-Shen Chen ,  Chun-Fan Tsai ,  Tsang-Wei Yu

IPC: H04W88/02 ,  H04W48/02 ,  H04W84/04

Abstract: A User Equipment (UE) including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a cell. The controller receives first barring information and second barring information from the cell via the wireless transceiver, and ignores the first barring information in response to the UE supporting network-based Cell-specific Reference Signal (CRS) interference mitigation. Also, the controller allows the UE to access the cell in response to the UE supporting network-based CRS interference mitigation and the second barring information indicating that the cell is not barred.

公开(公告)号：US20200228222A1

公开(公告)日：2020-07-16

申请号：US16328723

申请日：2019-02-20

Applicant: MediaTek Inc.

Inventor： Mingchun Chiang ,  Fucheng Wang ,  Tsang-Wei Yu ,  Jun Ma ,  Tao Chen ,  Wen Yang Chou

IPC: H04J11/00 ,  H04W48/16

Abstract: Various examples with respect to synchronization signal block (SSB) raster shift in mobile communications are described. A processor of a user equipment (UE) performs an initial cell search to identify a cell among one or more cells of a wireless communication system. The processor then camps on the identified cell. In performing the initial cell search, the processor scans through a plurality of SSB entries for frequency bands below 3 GHz with a SSB raster spacing and a SSB raster offset frequency that support sub-carrier spacing (SCS) spaced channel raster and 100 kHz channel raster for both 15 kHz SCS and 30 kHz SCS. A minimum channel bandwidth at 5 MHz or higher for 15 kHz SCS or at 10 MHz or higher for 30 kHz SCS is supported. The SSB raster spacing is a common multiple of 15 kHz and 100 kHz. The SSB raster offset frequency for 100 kHz channel raster is a multiple of 30 kHz plus/minus 10 kHz.

公开(公告)号：US10050683B2

公开(公告)日：2018-08-14

申请号：US15235745

申请日：2016-08-12

Applicant: MEDIATEK INC.

Inventor： Chien-Hwa Hwang ,  Yi-Ju Liao ,  Tsang-Wei Yu ,  Lung-Sheng Tsai ,  Pei-Kai Liao

IPC: H04W72/04 ,  H04B7/04 ,  H04L5/00 ,  H04B7/0452 ,  H04L27/34

Abstract: A method of modulating and demodulating superposed signals for MUST scheme is proposed. A transmitter takes bit sequences intended for multiple receivers under MUST scheme to go through a “bit sequence to constellation points” mapper before entering the modulators to satisfy the Gray coding rule and to achieve high demodulation performance for the receivers. In a first method, each bit sequence is assigned for each constellation point on the constellation map to satisfy one or more conditions under different power split factors. In a second method, the constellation map is divided into sub-regions according to the clustering of the constellation points for bit sequence assignment. A near-UE may use an ML receiver for demodulation and decoding the superposed signal. A far-UE may use an ML receiver or an MMSE receiver for demodulation and decoding the superposed signal.

公开(公告)号：US20170135114A1

公开(公告)日：2017-05-11

申请号：US15341846

申请日：2016-11-02

Applicant: MEDIATEK INC.

Inventor： Chien-Hwa Hwang ,  Lung-Sheng Tsai ,  Yi-Ju Liao ,  Tsang-Wei Yu ,  Pei-Kai Liao

IPC: H04W72/08 ,  H04L25/02 ,  H04B7/04

CPC classification number: H04W72/082 ,  H04B7/0452 ,  H04J11/00 ,  H04L1/00 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0041 ,  H04L1/0048 ,  H04L1/0066 ,  H04L25/0202 ,  H04L2001/0093 ,  H04W88/08 ,  H04W92/10

Abstract: A new air interface that is interference cancellation friendly is proposed. In one novel aspect, a novel code rate assignment with rate splitting is proposed. In one embodiment, a base station decomposes a codeword {x1} into two codewords {x1a} and {x1b}. The two codewords are applied with different code rates and/or modulation orders. More specifically, the code rate or modulation order of codeword {x1a} is set appropriately so that a victim UE can decode and cancel {1a} under the channel quality of the victim UE. Typically, the channel quality of a victim UE is poorer than the channel quality of the intended UE. As a result, the MCS for {1a} can be lower than the MCS for {1b} such that the victim UE is able to apply CWIC to decode and cancel {1a}.

公开(公告)号：US20170094668A1

公开(公告)日：2017-03-30

申请号：US15277709

申请日：2016-09-27

Applicant: MEDIATEK INC.

Inventor： Lung-Sheng Tsai ,  Chien-Hwa Hwang ,  Tsang-Wei Yu ,  Yi-Ju Liao ,  Pei-Kai Liao

IPC: H04W72/04 ,  H04B7/06

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. When a UE is configured by higher layer to enable MUST, the UE will monitor physical-layer control signaling carrying scheduling information and MUST-related information. Depending on whether MUST exists in each subframe, the UE derives the power allocation between the UE and its co-channel UE on allocated resource blocks. The UE also derives the power allocation based on whether it is configured for CRS-based transmission mode or DMRS-based transmission mode.

公开(公告)号：US11956738B2

公开(公告)日：2024-04-09

申请号：US17617658

申请日：2020-08-14

Applicant: MEDIATEK INC.

Inventor： Din-Hwa Huang ,  Tsang-Wei Yu

IPC: H04W52/52 ,  H04B7/06 ,  H04W52/22

CPC classification number: H04W52/52 ,  H04B7/0617 ,  H04W52/225

Abstract: A UE performs a cell activation process in a wireless network. The UE calculates a first automatic gain control (AGC) setting based on downlink signals from a base station. The downlink signals include a coarse beam reference signal, a fine beam reference signal, and a conversion indication that indicates a power conversion between the coarse beam reference signal and the fine beam reference signal. The UE further calculates a second AGC setting based on the first AGC setting and the conversion indication. The UE performs a cell search using one of the first AGC setting and the second AGC setting, and performs fine time-frequency tracking using the other of the first AGC setting and the second AGC setting.

公开(公告)号：US11910257B2

公开(公告)日：2024-02-20

申请号：US17930308

申请日：2022-09-07

Applicant: MEDIATEK INC.

Inventor： Din-Hwa Huang ,  Hsuan-Li Lin ,  Tsang-Wei Yu ,  Yih-Shen Chen ,  Chiao Yao Chuang

IPC: H04B7/06 ,  H04W8/24 ,  H04L5/00 ,  H04W36/22 ,  H04L25/02 ,  H04W72/04 ,  H04W36/00 ,  H04W72/23 ,  H04W36/38 ,  H04W72/044

CPC classification number: H04W36/0094 ,  H04L5/0057 ,  H04W36/0088 ,  H04W36/38 ,  H04W72/046 ,  H04W72/23 ,  H04L5/0007 ,  H04L5/0048

Abstract: Apparatus and methods are provided for RRM measurement in the NR network. In one novel aspect, the RRM measurement is configured with one measurement gap for SS block and CSI-RS. In one embodiment, an extended MGL (eMGL) is configured such that the SS block and CSI-RS is measurement within one measurement gap. In another embodiment, the shorter MGL (sMGL) that is shorter than the standard MGL is configured. In another novel aspect, the CSI-RS is allocated adjacent to the SS blocks such that one measurement gap is configured for both the SS block and CSI-RS measurement. In another novel aspect, the CSI-RS measurement is conditionally configured. In yet another novel aspect, the UE decodes the time index of the SS block conditionally.