公开(公告)号：US11202237B2

公开(公告)日：2021-12-14

申请号：US16505300

申请日：2019-07-08

Applicant: MEDIATEK INC.

Inventor： Lung-Wen Chen ,  Tsung-Ming Lee ,  Chun-Pin Chen

IPC: H04L12/28 ,  H04W36/00 ,  H04W36/32 ,  H04W36/30 ,  H04W76/10 ,  H04W76/30

Abstract: A method for enhancing mobility of a communications apparatus is provided. The method includes the steps of: establishing a connection with a cell; measuring one or more parameters of one or more cells; transmitting a measurement report to a network device according to the measured parameters of the one or more cells; determining whether a mobility command is received from the network device after transmitting the measurement report; and triggering a connection release procedure based on no mobility command being received from the network device after transmitting the measurement report.

公开(公告)号：US11032857B2

公开(公告)日：2021-06-08

申请号：US16413899

申请日：2019-05-16

Applicant: MEDIATEK INC.

Inventor： Chih-Yuan Tsai ,  Mohamed Abdelrazek El-Saidny ,  Yung-Chun Lin ,  Tzu-Ting Lo ,  Tsung-Ming Lee ,  Chun-Pin Chen

IPC: H04W76/10 ,  H04W8/18 ,  H04W76/30 ,  H04W24/10 ,  H04B17/309 ,  H04W76/27 ,  H04W36/30 ,  H04W36/00 ,  H04L1/00

Abstract: A mobile communication device including a Radio Frequency (RF) device and a baseband processor is provided. The RF device performs wireless transmission and reception to and from one or more cells. The baseband processor uses a first subscriber identity to establish a connection with a serving cell via the RF device to perform a first communication procedure, and in response to completing the first communication procedure or the first communication procedure being interrupted by a second communication procedure associated with a second subscriber identity, uses the first subscriber identity to send a measurement report to the serving cell via the RF device. In particular, the measurement report indicates a reported signal quality of the serving cell is poor enough to release the connection.

公开(公告)号：US20240224174A1

公开(公告)日：2024-07-04

申请号：US18090517

申请日：2022-12-29

Applicant: MEDIATEK INC.

Inventor： Tsung-Ming Lee ,  Chiao-Chih Chang ,  Nien-En Wu ,  Chih-Yuan Tsai ,  Jun-Jie Su

IPC: H04W52/02 ,  H04W24/10

CPC classification number: H04W52/0206 ,  H04W24/10

Abstract: A method for dynamically de-activating a secondary cell group (SCG) of dual connectivity includes: checking if at least one radio frequency (RF) band used by the SCG meets a pre-defined criterion, and in response to the at least one RF band meeting the pre-defined criterion, de-activating the SCG. For example, the at least one RF band is a 5G New Radio (NR) band.

公开(公告)号：US10477448B2

公开(公告)日：2019-11-12

申请号：US16149368

申请日：2018-10-02

Applicant: MediaTek Inc.

Inventor： Tsung-Ming Lee ,  Chun-Pin Chen ,  I-Hsien Yeh ,  Nien-En Wu ,  Shiau-Tsung Chiu

IPC: H04W36/00 ,  H04W36/30

Abstract: Various solutions for cell reselection with interference avoidance with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive frequency information of a target cell from a broadcast channel of a serving cell. The apparatus may determine an overlapped bandwidth region between the serving cell and the target cell according to the frequency information. The apparatus may compare a signal quality of the serving cell in the overlapped bandwidth region with a signal quality of the target cell in the overlapped bandwidth region. The apparatus may determine whether to perform a cell reselection according to a comparison result.

公开(公告)号：US11910247B2

公开(公告)日：2024-02-20

申请号：US17466076

申请日：2021-09-03

Applicant: MEDIATEK INC.

Inventor： Chih-Yuan Tsai ,  Tsung-Ming Lee ,  Ho-Wen Pu

IPC: H04W36/00 ,  H04W36/30 ,  H04W76/30 ,  H04W84/04

CPC classification number: H04W36/0022 ,  H04W36/0058 ,  H04W36/00837 ,  H04W36/30 ,  H04W76/30 ,  H04W84/042

Abstract: A method for switching between different RATs is provided. The method is executed by a mobile communications device camping on a first cell using a first Radio Access Technology (RAT). The method includes: determining, by a controller of the mobile communications device, a data transmission rate of the mobile communications device in the first cell; sending, by the controller, a first measurement report according to the determined data transmission rate, wherein the first measurement report is intended to trigger a handover procedure initiated by the first cell or to release a radio resource control (RRC) connection; and switching, by the controller, to camp on a second cell using a second RAT via the handover procedure or a local releasing procedure after the sending of the first measurement report.

公开(公告)号：US11159973B2

公开(公告)日：2021-10-26

申请号：US16704205

申请日：2019-12-05

Applicant: MEDIATEK INC.

Inventor： Chih-Cheng Yang ,  Tsung-Ming Lee ,  Wei-Chih Liao

IPC: H04W24/10 ,  H04W8/18 ,  H04W48/02 ,  H04W48/20 ,  H04W76/27 ,  H04W88/06 ,  H04W84/04

Abstract: A mobile communication device supporting wireless communications using a first subscriber identity and a second subscriber identity is provided. The mobile communication device includes a Radio Frequency (RF) device and a controller. The controller is coupled to the RF device such that the controller performs the following actions: performing a first measurement on a cell via the RF device by using the first subscriber identity to obtain a first measurement result; determining whether the first measurement result is valid; and based on a result of the determining, performing a second measurement on the cell via the RF device by using the second subscriber identity to obtain a second measurement result.

公开(公告)号：US20190327655A1

公开(公告)日：2019-10-24

申请号：US16140704

申请日：2018-09-25

Applicant: MediaTek Inc.

Inventor： Tsung-Ming Lee ,  Chun-Pin Chen ,  Lung-Wen Chen ,  Sian-Jheng Wong

IPC: H04W36/08 ,  H04W36/00 ,  H04W36/30 ,  H04W24/10

Abstract: Various solutions for selecting large-bandwidth cell with respect to user equipment and network apparatus in mobile communications are described. An apparatus may measure a first cell. The apparatus may measure a second cell. The apparatus may add an offset value to a measurement report of the second cell. The apparatus may transmit the measurement report of the second cell to a serving cell. A second bandwidth of the second cell may be greater than a first bandwidth of the first cell.

公开(公告)号：US20190116537A1

公开(公告)日：2019-04-18

申请号：US16149368

申请日：2018-10-02

Applicant: MediaTek Inc.

Inventor： Tsung-Ming Lee ,  Chun-Pin Chen ,  I-Hsien Yeh ,  Nien-En Wu ,  Shiau-Tsung Chiu

IPC: H04W36/30 ,  H04W36/00

Abstract: Various solutions for cell reselection with interference avoidance with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive frequency information of a target cell from a broadcast channel of a serving cell. The apparatus may determine an overlapped bandwidth region between the serving cell and the target cell according to the frequency information. The apparatus may compare a signal quality of the serving cell in the overlapped bandwidth region with a signal quality of the target cell in the overlapped bandwidth region. The apparatus may determine whether to perform a cell reselection according to a comparison result.