公开(公告)号：US20190312660A1

公开(公告)日：2019-10-10

申请号：US16377123

申请日：2019-04-05

Applicant: MediaTek Inc.

Inventor： Chun-Hsuan Kuo ,  Jiann-Ching Guey ,  Chiou-Wei Tsai ,  Ming-Po Chang ,  Cheng-Rung Tsai

IPC: H04J13/16 ,  H04J13/00 ,  H04L1/00 ,  H04W72/04

Abstract: Techniques and examples of channel multiplexing within interlace for New Radio (NR) unlicensed spectrum (NR-U) operation are described. An apparatus (e.g., user equipment (UE)) determines which sub-interlace of multiple sub-interlaces in each of a plurality of interlaces is assigned to the apparatus. The apparatus then performs an uplink (UL) transmission to a wireless network in an NR-U using the assigned sub-interlace in each of the plurality of interlaces. Each of the plurality of interlaces may be divided into respective multiple sub-interlaces with channel multiplexing.

公开(公告)号：US20190253281A1

公开(公告)日：2019-08-15

申请号：US16393943

申请日：2019-04-24

Applicant: MEDIATEK INC.

Inventor： Guo-Hau Gau ,  Chiou-Wei Tsai

IPC: H04L25/02 ,  H04L5/00 ,  H04W56/00

CPC classification number: H04L25/0202 ,  H04J13/0003 ,  H04L5/00 ,  H04L5/0007 ,  H04L25/02 ,  H04L25/0224 ,  H04W56/00 ,  H04W56/0015 ,  H04W56/005 ,  H04W72/0413

Abstract: A method for data transmission of a random access procedure for a user equipment of a wireless communication system is disclosed. The method comprises transmitting a preamble and data of the random access procedure in one message to a network of the wireless communication system, wherein the step of transmitting the preamble and the data comprises transmitting the data with the same numerology as that of the preamble.

公开(公告)号：US20190082335A1

公开(公告)日：2019-03-14

申请号：US16127481

申请日：2018-09-11

Applicant: MEDIATEK INC.

Inventor： Chia-Hao Yu ,  Ming-Po Chang ,  Chiou-Wei Tsai ,  Chien-Hwa Hwang ,  Jiann-Ching Guey

IPC: H04W24/04 ,  H04W74/08 ,  H04W16/28

Abstract: A method of beam failure recovery request (BFRQ) transmission is proposed. UE can search for UE-specific control channel in a search space that is signaled specifically for monitoring network response of the BFRQ. Furthermore, configurations indicated specifically for BFRQ can be carried by dedicated signaling such as high-layer radio resource control (RRC) signaling. After successfully rebuilding connection, UE assumes the demodulation reference signal (DMRS) ports of UE-specific control channel to be spatially quasi-co-located (QCL-ed) with the reference signals identified during the beam failure recovery procedure.

公开(公告)号：US20180376428A1

公开(公告)日：2018-12-27

申请号：US16014242

申请日：2018-06-21

Applicant: MEDIATEK INC.

Inventor： Guan-Yu Lin ,  Chiou-Wei Tsai

IPC: H04W52/14 ,  H04W72/04 ,  H04W74/08 ,  H04W16/28

Abstract: A method of physical random-access channel (PRACH) preamble retransmission for new radio (NR) is proposed. A power ramping counter is introduced in addition to a preamble transmission counter for a RACH procedure. A UE determines the preamble TX power based on the power ramping counter. The UE updates the power ramping counter based on each PRACH transmission condition, which comprises both a selected DL beam and a selected UL beam for preamble transmission. The power ramping counter is incremented by one if the transmission condition remains the same as a previous PRACH preamble transmission. On the other hand, the power ramping counter remains unchanged if the transmission condition is different from a previous PRACH preamble transmission.

公开(公告)号：US12022510B2

公开(公告)日：2024-06-25

申请号：US18138923

申请日：2023-04-25

Applicant: MediaTek Inc.

Inventor： Chiou-Wei Tsai ,  Chun-Hsuan Kuo

IPC: H04W74/08 ,  H04W72/0446 ,  H04W72/1268 ,  H04W74/0808 ,  H04W74/0833

CPC classification number: H04W74/0808 ,  H04W72/0446 ,  H04W72/1268 ,  H04W74/0833

Abstract: Various examples and schemes pertaining to uplink (UL) designs for New Radio (NR) unlicensed spectrum (NR-U) operation in mobile communications are described. An apparatus as a user equipment (UE) receives, from a network node, a scheduling of a plurality of starting slots for an UL transmission by the apparatus. The apparatus performs a listen-before-talk (LBT) procedure and, based on a result of the LBT procedure, the apparatus performs the UL transmission with an initial slot of the UL transmission in one of the plurality of starting slots.

公开(公告)号：US11528595B2

公开(公告)日：2022-12-13

申请号：US17148135

申请日：2021-01-13

Applicant: MEDIATEK INC.

Inventor： Chiou-Wei Tsai

IPC: H04W8/20 ,  H04W36/00 ,  H04W72/04 ,  H04W48/14

Abstract: A method for UE capability signaling to support NR-U is proposed. A UE transfers UE capability information to a mobile communication network, and the UE capability information includes information regarding whether the UE supports system information acquisition on an unlicensed cell. The UE receives configuration from a serving cell of the mobile communication network, and the configuration includes information for system information acquisition of one or more unlicensed cells on a frequency. The UE acquires system information of the one or more unlicensed cells on the frequency and reports the acquired system information to the serving cell, or stores the acquired system information in the UE.

公开(公告)号：US11490428B2

公开(公告)日：2022-11-01

申请号：US16368853

申请日：2019-03-29

Applicant: MediaTek Inc.

Inventor： Chiou-Wei Tsai ,  Jiann-Ching Guey ,  Chun-Hsuan Kuo

IPC: H04W74/08 ,  H04L5/00 ,  H04W72/12 ,  H04W74/00

Abstract: Techniques and examples of design for initial access in New Radio (NR) unlicensed spectrum (NR-U) are described. An apparatus receives from a base station of a wireless network which transmits one or multiple synchronization signal and PBCH blocks (SS/PBCH blocks) whose indices are indicated in a cyclic-wrapped order subject to a result of listen-before-talk (LBT) in NR-U. The apparatus also transmits a random access request on random access channel (RACH) resources allocated by the base station.

公开(公告)号：US11445538B2

公开(公告)日：2022-09-13

申请号：US16749763

申请日：2020-01-22

Applicant: MEDIATEK INC.

Inventor： Cheng-Rung Tsai ,  Chiou-Wei Tsai

IPC: H04W74/08 ,  H04W72/14 ,  H04W72/12 ,  H04W72/04 ,  H04L1/18 ,  H04L5/00

Abstract: Aspects of the disclosure further provide an apparatus and a method for wireless communication. The apparatus includes processing circuitry that receives, from a base station (BS), a downlink (DL) grant scheduling an uplink (UL) transmission to the BS. The DL grant indicates a first type of channel access procedure for the UL transmission. The processing circuitry performs a channel access procedure for the UL transmission according to the first type of channel access procedure indicated by the DL grant.

公开(公告)号：US20210266968A1

公开(公告)日：2021-08-26

申请号：US17315333

申请日：2021-05-09

Applicant: MediaTek Inc.

Inventor： Jiann-Ching Guey ,  Chun-Hsuan Kuo ,  Chien-Hwa Hwang ,  Chiou-Wei Tsai ,  Ming-Po Chang

IPC: H04W74/08 ,  H04W74/00 ,  H04W72/12 ,  H04W24/00 ,  H04W48/16

Abstract: 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.

公开(公告)号：US11032851B2

公开(公告)日：2021-06-08

申请号：US16276783

申请日：2019-02-15

Applicant: Mediatek Inc.

Inventor： Chiou-Wei Tsai ,  Chia-Hao Yu

IPC: H04L5/00 ,  H04W56/00 ,  H04L1/00 ,  H04W24/10 ,  H04W76/11 ,  H04W72/04 ,  H04W72/12 ,  H04W72/14 ,  H04W74/00 ,  H04W74/08

Abstract: A UE determines (a) resources of a PDCCH indicating a PDSCH that contains a random access message or indicating an uplink grant for transmitting a random access message and (b) resources of a second PDCCH. The UE further determines, in a time domain, (a) that the first PDCCH overlaps with the second PDCCH, (b) that the first PDCCH overlaps with a second PDSCH that contains system data or user data and indicated by the second PDCCH, (c) that the first PDSCH overlaps with the second PDCCH, or (d) that the first PDSCH overlaps with the second PDSCH. The UE then determines that monitoring the second PDCCH is an unexpected operation.