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    Modem and Application Interaction for Voice Calls
    21.
    发明申请
    Modem and Application Interaction for Voice Calls 有权

    公开(公告)号：US20210007030A1

    公开(公告)日：2021-01-07

    申请号：US16890181

    申请日：2020-06-02

    Applicant: MEDIATEK INC.

    Inventor： Yucheng Huang ,  Chun Hsu ,  Cheng-Yu Chen ,  Marko Niemi

    IPC: H04W36/24 ,  H04W36/14

    Abstract: Methods and apparatus are provided for EPS fallback status report by the modem to the upper layers. In one embodiment, the mobile terminal (MT) initiates a 5G voice call, detects an EPSFB triggered by the wireless network, identifies one or more EPSFB status and sends one or more EPSFB status indicators to at least one upper layer based on the identified one or more EPSFB status. In one embodiment, the EPS fall back is a redirection procedure. In another embodiment, the EPS fallback is a handover procedure. In yet another embodiment, the one or more EPSFB status indictors comprising a redirection to EPS started indicator, a handover to EPS started indicator, a redirection to EPS failed indicator, a handover to EPS failed indicator, a redirection to EPS success indicator, and a handover to EPS success indicator. In one embodiment, the MT sends EPSFB status indicators using AT command.

    ENHANCEMENT FOR CLOSED ACCESS GROUPS
    22.
    发明申请
    ENHANCEMENT FOR CLOSED ACCESS GROUPS 审中-公开

    公开(公告)号：US20200351755A1

    公开(公告)日：2020-11-05

    申请号：US16861624

    申请日：2020-04-29

    Applicant: MEDIATEK INC.

    Inventor： Chien-Chun Huang-Fu ,  Marko Niemi

    IPC: H04W48/02 ,  H04W8/08

    Abstract: Aspects of the disclosure provide methods and an apparatus for enhancement of closed access groups (CAGs). For example, the apparatus can include a non-volatile memory, receiving circuitry, transmitting circuitry and processing circuitry. The receiving circuitry can be configured to receive a configuration update command message and a registration accept message, each of which includes a CAG information list IE containing a CAG information list. The transmitting circuitry can be configured to transmit a configuration update complete message and a registration request message. The processing circuitry can be configured to store the CAG information list of the CAG information list IE in the non-volatile memory, and select a public land mobile network based on the CAG information list stored in the non-volatile memory.

    Maintenance of forbidden tacking area list in NR systems
    23.
    发明授权
    Maintenance of forbidden tacking area list in NR systems 有权

    公开(公告)号：US10764952B2

    公开(公告)日：2020-09-01

    申请号：US16244259

    申请日：2019-01-10

    Applicant: MEDIATEK INC.

    Inventor： Chien-Chun Huang-Fu ,  Pan-Yen Chiang ,  Marko Niemi ,  Yuan-Chieh Lin

    IPC: H04W4/00 ,  H04W76/18 ,  H04W4/90 ,  H04M1/725 ,  H04W48/04

    Abstract: A method of maintaining a proper forbidden tracking area identifier (TAI) list is proposed. A UE receives a service area list comprising one or more allowed tracking areas. The service area list may be carried by a configuration update command. UE compares if any of the allowed tracking area having a matching TAI in the forbidden TAI list. Accordingly, UE removes any allowed tracking areas having a matching TAI from the forbidden TAI list. In one embodiment, UE sends a REGISTRATION REQUEST message to initiate a registration procedure. In response, UE receives a REGISTRATION ACCEPT message, which may also carry a service area list. UE may remove the allowed tracking area having a matching TAI from the forbidden TAI list. However, if UE is registered for emergency services, then UE shall not remove the allowed tracking area from the forbidden TAI list.

    Enhanced Handling on Forbidden PLMN List
    24.
    发明申请
    Enhanced Handling on Forbidden PLMN List 审中-公开

    公开(公告)号：US20190357116A1

    公开(公告)日：2019-11-21

    申请号：US16408729

    申请日：2019-05-10

    Applicant: Mediatek Inc.

    Inventor： Chien-Chun Huang-Fu ,  Marko Niemi

    IPC: H04W48/04 ,  H04W48/18 ,  H04W60/00 ,  H04W8/20 ,  H04W76/25 ,  H04W8/24

    Abstract: A method of enhanced handling of a Forbidden Public Land Mobile Network (PLMN) list is proposed. When a UE tries to attach to a PLMN and receives an ATTACH Reject message having no integrity protection, it could be transmitted from a network entity trying to block the PLMN for providing service. Therefore, by introducing a temporary forbidden PLMN list and a timer T3247, UE can avoid adding the PLMN ID to the Forbidden PLMN list and avoid being blocked for network access. Instead, UE is only temporary refrained from selecting the PLMN ID and is able to retry for the network access after T3247 expiry. The temporary list together with T3247 mechanism thus gives UE more opportunity to try with the same PLMN ID at a different time and/or a different UE location, where the malicious blocking is no longer available.

    Enhance AT Command for Backoff Timer Control
    28.
    发明申请
    Enhance AT Command for Backoff Timer Control 有权

    公开(公告)号：US20170094603A1

    公开(公告)日：2017-03-30

    申请号：US15273886

    申请日：2016-09-23

    Applicant: MEDIATEK INC.

    Inventor： Chien-Chun Huang-Fu ,  Yuan-Chieh Lin ,  Marko Niemi ,  Yu-Syuan Jheng

    IPC: H04W52/02

    CPC classification number: H04W52/0229 ,  H04W28/06 ,  H04W28/12 ,  H04W76/00 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262

    Abstract: AT commands are used for controlling Mobile Termination (MT) functions and GSM/UMTS network services from a Terminal Equipment (TE) through Terminal Adaptor (TA). 3GPP introduces multiple backoff timers and barring to solve network congestion problem. However, a TE does not know the timer value and the barring status. In accordance with one novel aspect, a new AT command interface that can respond timer value and barring status to the TE is proposed. It reduces wasteful retries and saves power consumption of the TE. Through the new AT command interface, the TE can query backoff timer status. Via unsolicited result code (URC), the MT can detect backoff timer status change and report updated backoff timer status to the TE.

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