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    Enhance AT Command for Backoff Timer Control
    33.
    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.

    Group communication over LTE eMBMS
    34.
    发明授权
    Group communication over LTE eMBMS 有权
    通过LTE eMBMS进行群组通信

    公开(公告)号：US09386425B2

    公开(公告)日：2016-07-05

    申请号：US14221631

    申请日：2014-03-21

    Applicant: MEDIATEK INC.

    Inventor： Chia-Hao Yu ,  Chia-Chun Hsu ,  Yih-Shen Chen ,  Chien-Chun Huang-Fu ,  Yu-Syuan Jheng ,  Chia-Hung Tsai

    IPC: H04B7/00 ,  H04W4/08 ,  H04W4/10 ,  H04W36/32 ,  H04W72/00 ,  H04W36/08 ,  H04W76/00 ,  H04W4/06 ,  H04W74/00

    CPC classification number: H04W4/08 ,  H04L5/0037 ,  H04L12/185 ,  H04L12/1886 ,  H04W4/06 ,  H04W4/10 ,  H04W24/08 ,  H04W36/0083 ,  H04W36/08 ,  H04W36/30 ,  H04W36/32 ,  H04W72/00 ,  H04W72/005 ,  H04W72/121 ,  H04W74/006 ,  H04W76/40

    Abstract: A method of supporting group communication over LTE MBMS is provided. A UE first establishes a unicast Evolved Packet Service (EPS) bearer in an LTE network for group communication. The UE belongs to a communication group having a communication group ID. The UE receives access information from the network for monitoring downlink (DL) multicast traffic of the DL group communication based on a multicast decision. The UE is then ready for monitoring a multicast Multimedia Broadcast Multicast Service (MBMS) bearer for receiving the DL multicast traffic. The multicast MBMS bearer is associated with a Temporary Mobile Group Identifier (TMGI), and wherein the TMGI is associated with the communication group ID. In one embodiment, the access information comprises mapping information between the TMGI and the communication group ID.

    Abstract translation: 提供了一种通过LTE MBMS支持群组通信的方法。 UE首先在用于组通信的LTE网络中建立单播演进分组业务（EPS）承载。 UE属于具有通信组ID的通信组。 UE从网络接收基于多播决定的DL组通信的下行链路（DL）组播流量的接入信息。 然后，UE准备监视用于接收DL多播业务的组播多媒体广播多播服务（MBMS）承载。 组播MBMS承载与临时移动组标识符（TMGI）相关联，并且其中TMGI与通信组ID相关联。 在一个实施例中，访问信息包括TMGI和通信组ID之间的映射信息。

    Method to Support Service Continuity for Multiple Sessions
    35.
    发明申请
    Method to Support Service Continuity for Multiple Sessions 有权
    支持多个会话的服务连续性的方法

    公开(公告)号：US20150207827A1

    公开(公告)日：2015-07-23

    申请号：US14598040

    申请日：2015-01-15

    Applicant: MEDIATEK INC.

    Inventor： Yu-Syuan Jheng ,  Chien-Chun Huang-Fu ,  Nuan-Yu Yang

    IPC: H04L29/06 ,  H04W36/00

    CPC classification number: H04L65/1083 ,  H04L65/1016 ,  H04L65/1046 ,  H04L65/403 ,  H04L65/4038 ,  H04W36/0011 ,  H04W36/0022

    Abstract: A method to manage call continuity in a network environment including a circuit-switched network and an IP multimedia subsystem (IMS) network is provided. A UE monitors one or more ongoing sessions in an IMS network, and the ongoing sessions contain at least one conference call. The UE detects a network-switching event for the UE to switch from the IMS network to a circuit-switched CS network. The UE then determines the one or more ongoing sessions within the IMS network to be released or transferred to the CS network. Finally, the UE performs a session transfer procedure for transferring the determined sessions.

    Abstract translation: 提供了一种在包括电路交换网络和IP多媒体子系统（IMS）网络的网络环境中管理呼叫连续性的方法。 UE监视IMS网络中的一个或多个正在进行的会话，并且正在进行的会话包含至少一个电话会议。 UE检测用于UE从IMS网络切换到电路交换CS网络的网络切换事件。 然后，UE确定将要释放或传送到CS网络的IMS网络内的一个或多个正在进行的会话。 最后，UE执行用于传送所确定的会话的会话转移过程。

    Control and management of reflective QoS
    38.
    发明授权
    Control and management of reflective QoS 有权

    公开(公告)号：US10542454B2

    公开(公告)日：2020-01-21

    申请号：US15892501

    申请日：2018-02-09

    Applicant: MEDIATEK INC.

    Inventor： Yu-Syuan Jheng ,  Pavan Nuggehalli ,  Guillaume Sebire ,  Chien-Chun Huang-Fu ,  Per Johan Mikael Johansson

    IPC: H04W28/02 ,  H04L12/851 ,  H04L29/08 ,  H04W28/26 ,  H04L12/813

    Abstract: Aspects of the disclosure provide a method for reflective quality of service (QoS) control and management at a user equipment (UE). The method can include creating a derived QoS rule belonging to a session and having a QoS flow identifier (QFI). The derived QoS rule includes a precedence value that is set to one of a precedence value associated with a session identifier (ID) of the session received from a core network (CN) of a wireless communication system during a session establishment procedure for establishing the session, a precedence value associated with the QFI received from the CN during the session establishment procedure for establishing the session or when a downlink QoS flow having the QFI is added to the session, or a precedence value that is defined by an operator of the wireless communication system.

    Enhanced multimedia call control in next generation mobile communication systems
    39.
    发明授权
    Enhanced multimedia call control in next generation mobile communication systems 有权

    公开(公告)号：US10477438B2

    公开(公告)日：2019-11-12

    申请号：US16191648

    申请日：2018-11-15

    Applicant: MEDIATEK INC.

    Inventor： Chien-Chun Huang-Fu ,  Guillaume Sebire ,  Yu-Syuan Jheng

    IPC: H04W36/00 ,  H04L29/06 ,  H04W36/04 ,  H04W36/30 ,  H04W36/14 ,  H04W88/08 ,  H04W60/00

    Abstract: A network-based solution of supporting IP multimedia subsystem (IMS) call setup in a next generation system (5GS) is proposed. During an attach or registration area update procedure, a serving base station sends an indication to a UE indicating whether IMS voice over PS session is supported or not. Upon receipt of the indication that IMS VoPS is supported, the UE triggers an IMS registration procedure. However, when an MO/MT call happens, the network determines that the UE may be in conditions where voice service is not supported because the network is not able to provide a successful IMS VoPS over the current serving cell connected to 5G core network. The network then triggers a RAT change or a EPS fallback procedure such that the UE is handover to a target cell that supports IMS VoPS.

    Apparatuses and methods for reducing circuit switch fallback (CSFB) call setup time
    40.
    发明授权
    Apparatuses and methods for reducing circuit switch fallback (CSFB) call setup time 有权

    公开(公告)号：US10390384B2

    公开(公告)日：2019-08-20

    申请号：US15138720

    申请日：2016-04-26

    Applicant: MediaTek Inc.

    Inventor： Yu-Cheng Huang ,  Chien-Chun Huang-Fu ,  Yu-Syuan Jheng ,  Jou-Man Lin

    IPC: H04W76/30 ,  H04W76/16 ,  H04W36/00 ,  H04W76/18 ,  H04W76/50 ,  H04W60/00 ,  H04W60/06

    Abstract: A mobile communication device including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a first network supporting only Packet-Switched (PS) services or a second network supporting Circuit-Switched (CS) services. The controller receives a rejection message of a Tracking Area Updating (TAU) procedure from the first network via the wireless transceiver when a Circuit Switch Fallback (CSFB)-related call originated from or terminated to the mobile communication device is pending, determines whether the rejection message includes a predetermined rejection cause, and in response to the rejection message including the predetermined rejection cause, selects the second network to make the CSFB-related call via the wireless transceiver without re-attaching to the first network.

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