公开(公告)号：US20240155585A1

公开(公告)日：2024-05-09

申请号：US18500043

申请日：2023-11-01

Applicant: MEDIATEK INC.

Inventor： Yi-Ju Liao ,  Pei-Kai Liao ,  Chi-Hsuan Hsieh ,  Wei-De Wu

IPC: H04W72/0453 ,  H04W72/232

CPC classification number: H04W72/0453 ,  H04W72/232

Abstract: Apparatus and methods are provided for TxRU carrier switch. In one embodiment, the UE is configured with an anchor carrier in an anchor cell and one or more secondary carriers. In one embodiment, the TxRU carrier switch is configured as supplementary uplink (SUL)-based carrier switch with supplementary carriers or configured as a CA-based carrier switch with supplementary cells. In one embodiment, the one or more secondary carriers are supplementary carriers of the anchor cell, and wherein the anchor carrier is TDD carrier or frequency division duplex (FDD) carrier, and wherein the supplementary carrier is configured as a TDD carrier, a FDD carrier, a supplementary uplink carrier (SUL), or a supplementary downlink carrier (SDL). In another embodiment, the one or more secondary carriers are supplementary cells different from the anchor cell, and wherein the supplementary cells are configured with MAC control element (CE).

公开(公告)号：US20240040419A1

公开(公告)日：2024-02-01

申请号：US18220375

申请日：2023-07-11

Applicant: MEDIATEK INC.

Inventor： Chia-Hao Yu ,  Din-Hwa Huang ,  Pei-Kai Liao

IPC: H04W24/10 ,  H04L5/00 ,  H04W36/00

CPC classification number: H04W24/10 ,  H04L5/0051 ,  H04W36/0085

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and a wireless communication system including a control device and one or more cells are provided. The control device configures triggering conditions for a user equipment (UE) to initiate transmission of specific uplink (UL) reference signals for UL radio resource management (RRM) measurements. The one or more cells detect the specific UL reference signals transmitted by the UE on specific UL RRM resources based on a reference timing when the triggering conditions are met at the UE. The one or more cells measure the specific UL reference signals to obtain measurement results. The control device decides for a carrier change or a cell change based on the measurement results of the one or more cells. The control device indicates to the UE a set of selected cells or carriers for the UE to connect.

公开(公告)号：US20230247641A1

公开(公告)日：2023-08-03

申请号：US18133008

申请日：2023-04-11

Applicant: Mediatek Inc.

Inventor： Yiju Liao ,  Chien Hwa Hwang ,  Chien-Chang Li ,  Pei-Kai Liao

IPC: H04W72/23 ,  H04W76/27 ,  H04L5/00 ,  H04W56/00 ,  H04W74/08

CPC classification number: H04W72/23 ,  H04W76/27 ,  H04L5/0048 ,  H04W56/001 ,  H04W74/0833

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 receives a CORESET configuration specifying one or more properties of a first CORESET. The UE also determines time and frequency resource elements of the first CORESET based on the one or more properties. The UE performs blind decoding on down-link control channel candidates in a search space carried by the first CORESET to obtain a down-link control channel.

公开(公告)号：US11601944B2

公开(公告)日：2023-03-07

申请号：US17847571

申请日：2022-06-23

Applicant: MEDIATEK INC.

Inventor： Pei-Kai Liao ,  Chia-Chun Hsu ,  Tao Chen

IPC: H04W72/04 ,  H04W72/0453 ,  H04W76/27 ,  H04L5/00 ,  H04W80/02

Abstract: Apparatus and methods are provided for virtual carrier operation in wireless systems with large carrier bandwidth. In one novel aspect, virtual carrier (VC) with a block of physically contiguous radio resources within a component carrier is configured. In one embodiment, the UE configures a downlink (DL) common virtual carrier (CVC) and an uplink (UL) CVC, which carry control information for the UE, and one or more DL/UL dedicated VCs (DVCs), which carry data services. In one embodiment, the UE obtains the CVC configuration information including the channel bandwidth and the physical location through system information. In another embodiment, the UE obtains DVC configuration through an RRC-layer signaling. In another novel aspect, the UE obtains a VC configuration switch command through either a MAC signal or a PHY signal, and subsequently reconfigures one or more configured VCs based on the received switch command.

公开(公告)号：US20220272705A1

公开(公告)日：2022-08-25

申请号：US17743320

申请日：2022-05-12

Applicant: MEDIATEK INC.

Inventor： Pei-Kai Liao ,  Tao Chen ,  Chien-Chang Li

IPC: H04W72/04 ,  H04W56/00 ,  H04W48/10 ,  H04W48/16

Abstract: In one novel aspect, a plurality of synchronization signal (SS) anchors within a block of a contiguous spectrum is configured in a wireless network. Each SS anchor is a primary SS anchor or a secondary SS anchor. The UE performs an initial access by detecting a first primary SS anchor and receives one or more virtual carrier configurations with corresponding SS anchors within the block of the contiguous spectrum. In another novel aspect, the UE performs an initial access through a first RF band with a first bandwidth and a first center frequency, receives a switching signal to switch from the first RF band to a second RF band with a second bandwidth and a second center frequency, the second bandwidth is different from the first bandwidth, and performs a RF bandwidth adaptation from the first RF band to the second RF band based on the adaptation signal.

公开(公告)号：US11357007B2

公开(公告)日：2022-06-07

申请号：US16932952

申请日：2020-07-20

Applicant: MEDIATEK INC.

Inventor： Pei-Kai Liao ,  Tao Chen ,  Chien-Chang Li

IPC: H04W72/04 ,  H04W56/00 ,  H04W48/10 ,  H04W48/16 ,  H04W48/14

Abstract: In one novel aspect, a plurality of synchronization signal (SS) anchors within a block of a contiguous spectrum is configured in a wireless network. Each SS anchor is a primary SS anchor or a secondary SS anchor. The UE performs an initial access by detecting a first primary SS anchor and receives one or more virtual carrier configurations with corresponding SS anchors within the block of the contiguous spectrum. In another novel aspect, the UE performs an initial access through a first RF band with a first bandwidth and a first center frequency, receives a switching signal to switch from the first RF band to a second RF band with a second bandwidth and a second center frequency, the second bandwidth is different from the first bandwidth, and performs a RF bandwidth adaptation from the first RF band to the second RF band based on the adaptation signal.

公开(公告)号：US11329793B2

公开(公告)日：2022-05-10

申请号：US16790937

申请日：2020-02-14

Applicant: MEDIATEK INC.

Inventor： Pei-Kai Liao ,  Chia-Chun Hsu

IPC: H04L5/00 ,  H04W76/28 ,  H04W72/12

Abstract: Apparatus and methods are provided for efficient bandwidth adaptation for wideband carrier. In one novel aspect, the UE starts a BWP timer upon detecting one or more BWP timer starting triggering events, resets the BWP timer upon detecting BWP resetting triggering events, and switches to the default BWP upon expiration of the BWP timer. The BWP timer starting triggering events comprises decoding a command to switch away from the default BWP, the detection of end of DL data transmission in DRX mode. In another novel aspect, the UE only decodes the DCI indication for active BWP switching in the first three OFDM symbols of a subframe or a slot. In yet another novel aspect, when the SPS is configured for the serving cell for a UE with multiple BWPs, the SPS is configured for all the BWPs accordingly.

公开(公告)号：US10932245B2

公开(公告)日：2021-02-23

申请号：US16272055

申请日：2019-02-11

Applicant: Mediatek Inc.

Inventor： Chien Hwa Hwang ,  Pei-Kai Liao ,  Wei-De Wu ,  Yen Shuo Chang

IPC: H04W72/04 ,  H04W76/11 ,  H04W72/12 ,  H04W4/06 ,  H04W72/10

Abstract: A method of wireless communication of a UE is provided. The UE determines resources of a first PDSCH and resources of second at least one PDSCH on a cell, the first PDSCH being a unicast PDSCH specific to the UE. The UE determines that the first PDSCH overlaps with the second at least one PDSCH in a time domain. The UE determines whether the second at least one PDSCH is another unicast PDSCH specific to the UE. When the second at least one PDSCH is not another unicast PDSCH specific to the UE, a duration required for decoding the first PDSCH meets a duration threshold, and the cell is in a first frequency range, the UE (a) refrains from decoding the first PDSCH independently of a transport block size of the second at least one PDSCH or (b) determines a transport block size of the second at least one PDSCH.

公开(公告)号：US20200304159A1

公开(公告)日：2020-09-24

申请号：US16820925

申请日：2020-03-17

Applicant: MEDIATEK INC.

Inventor： Pei-Kai Liao ,  Chun-Ming Kuo ,  Chien-Hwa Hwang ,  Jiann-Ching Guey

IPC: H04B1/12 ,  H04W72/04

Abstract: 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.

公开(公告)号：US10785769B2

公开(公告)日：2020-09-22

申请号：US16559373

申请日：2019-09-03

Applicant: MEDIATEK INC.

Inventor： Chien-Hwa Hwang ,  Weidong Yang ,  Pei-Kai Liao ,  Wei-De Wu

IPC: H04W72/04 ,  H04L1/18 ,  H04L1/00 ,  H04W88/02

Abstract: A method to improve the design of new radio physical downlink control channel (NR-PDCCH) transmission and to reduce the false alarm rate of NR-PDCCH blind decoding is proposed. The downlink control information (DCI) bits are carried by NR-PDCCH to be transmitted to UEs after CRC attachment, channel encoding, interleaving, and modulation. The proposed NR-PDCCH design is separated into two parts. In a first part, a UE-ID or RNTI is used to derive a CRC mask or a scrambling sequence for CRC attachment of the DCI bits. In a second part, a UE-specific ID is used to derive an interleaver before or after channel encoding of the DCI bits. If the interleaver is placed before channel encoding, it takes the form of a bit interleaver. If the interleaver is placed after channel encoding, it takes the form of a bit interleaver or a channel interleaver.