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：US10980074B2

公开(公告)日：2021-04-13

申请号：US16458361

申请日：2019-07-01

Applicant: MEDIATEK INC.

Inventor： Chih-Yuan Tsai ,  Wei-Chiang Peng

IPC: H04W76/15 ,  H04W80/10 ,  H04W8/18 ,  H04L29/06

Abstract: A mobile communication device including a first RF device, a second RF device, and a controller is provided. The first RF device performs wireless transmission and reception utilizing a first RAT. The second RF device performs wireless transmission and reception utilizing a second RAT. The controller uses a first subscriber identity to make a first call or conduct a first data session via the first RF device, determines whether a dual connectivity on the first RAT and the second RAT is supported in response to a request for using a second subscriber identity to start a second call or a second data session via the second RF device, and allows the second call or the second data session to start during the first call or the first data session in response to the dual connectivity on the first RAT and the second RAT being supported.

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：US20230007559A1

公开(公告)日：2023-01-05

申请号：US17844049

申请日：2022-06-19

Applicant: MEDIATEK INC.

Inventor： Chiao-Chih Chang ,  Yuan-Chieh Lin ,  Chih-Yuan Tsai ,  Chien-Chun Huang-Fu ,  Yi-Lun Chen ,  Ying-You Lin

IPC: H04W36/18 ,  H04W36/08 ,  H04W36/00

Abstract: A communication apparatus comprises a radio transceiver and a modem processor. The radio transceiver is configured to transmit or receive wireless signals in a wireless network. The modem processor is coupled to the radio transceiver and configured to perform operations comprising: connecting to a first network device via a first communication link in a first frequency band; predicting a handover according to at least one of at least one measurement result or location information; connecting to a second network device via a second communication link in a second frequency band, after predicting the handover; performing the handover from the first network device to a third network device, to stop connecting to the first network device and to connect to the third network device via the first communication link in the first frequency band; and stopping connecting to the second network device, after performing the handover.

公开(公告)号：US11382003B2

公开(公告)日：2022-07-05

申请号：US16362983

申请日：2019-03-25

Applicant: MEDIATEK INC.

Inventor： Tsung-Huan Cheng ,  Hsi-Feng Chen ,  Kuan-Hung Tsai ,  Chih-Yuan Tsai ,  Tsan-Ya Peng

IPC: H04W36/00 ,  H04L65/1016 ,  H04W88/02

Abstract: A mobile communication device including a Radio Frequency (RF) device and a controller is provided. The controller is coupled to the RF device and configured to allocate the RF device to selectively communicate with a Packet Switched (PS)-based network using a first subscriber identity or with a service network using a second subscriber identity, and ignore a paging message associated with the first subscriber identity during an ongoing on-demand service associated with the second subscriber identity.

公开(公告)号：US10911995B2

公开(公告)日：2021-02-02

申请号：US16792462

申请日：2020-02-17

Applicant: MEDIATEK INC.

Inventor： Chih-Yuan Tsai ,  Wei-Chiang Peng ,  Kun-Lin Wu

IPC: H04W36/00 ,  H04W88/06 ,  H04W8/18 ,  H04M7/00 ,  H04W36/28 ,  H04W36/30 ,  H04W76/27

Abstract: A mobile communication device including a first RF device, a second RF device, and a controller is provided. The first and second RF devices perform wireless transmission and reception utilizing a first RAT and a second RAT, respectively. The controller detects, during a communication with a first cell using a first subscriber identity, an incoming event for making a voice call or conducting a data session using a second subscriber identity via the second RF device, and switches the communication associated with the first subscriber identity to a second cell which utilizes the first RAT in a frequency band on which dual connectivity over the first and second RATs is supported, or enables the voice call associated with the second subscriber identity to be made via the first RF device when the communication associated with the first subscriber identity is performed via the second RF device.

公开(公告)号：US09674758B2

公开(公告)日：2017-06-06

申请号：US14943387

申请日：2015-11-17

Applicant: MediaTek Inc.

Inventor： Chih-Yuan Tsai ,  Chi-Chen Lee

IPC: H04W36/30 ,  H04W36/00 ,  H04B1/3816 ,  H04W68/02 ,  H04W88/02 ,  H04W48/20 ,  H04W88/06

CPC classification number: H04W36/30 ,  H04B1/3816 ,  H04W36/0061 ,  H04W36/0083 ,  H04W48/20 ,  H04W68/02 ,  H04W88/02 ,  H04W88/06

Abstract: A wireless communication method and Multi-SIM user equipment are provided. The wireless communication method for Multi-SIM dual standby (DSDS) technology is applied on Multi-SIM user equipment (UE) which is capable of carrier aggregation (CA) or dual connectivity (DuCo). The wireless communication method includes the steps of determining whether a packet switch (PS) or circuit switch (CS) paging is received on a second SIM card when a first PS call is ongoing in a first SIM card; and suspending the first PS call which is ongoing on the first SIM card if the packet switch (PS) or circuit switch (CS) paging is received on the second SIM card.