公开(公告)号：US20190059026A1

公开(公告)日：2019-02-21

申请号：US15998701

申请日：2018-08-16

Applicant: MediaTek Inc.

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

IPC: H04W36/00 ,  H04W48/16

Abstract: Various examples and schemes pertaining to enhancement of voice domain selection in 5th-Generation Systems (5GS) and fast return from Evolved Packet System (EPS) to 5GS are described. A processor of a user equipment (UE) receive an indication of whether a packet-switched (PS) voice service is supported in a first mobile communication system. The processor performs, based on the indication, voice domain selection (VDS) by selecting and engaging with one of a plurality of mobile communication systems comprising the first mobile communication system and at least a second mobile communication system. The processor performs the VDS before receiving signaling from one of the plurality of communication systems about availability of support for the PS voice service in that mobile communication system.

公开(公告)号：US20190052572A1

公开(公告)日：2019-02-14

申请号：US16039572

申请日：2018-07-19

Applicant: MediaTek Inc.

Inventor： Rohit Naik ,  Chien-Chun Huang-Fu ,  Sami Jutila

IPC: H04L12/805 ,  H04W24/02 ,  H04W76/12

Abstract: Various solutions for avoiding packet fragmentation with respect to user equipment and network apparatus in mobile communications are described. An apparatus may determine a first maximum transmission unit (MTU) configuration of a session via a first network interface. The apparatus may determine a second MTU configuration of the session via a second network interface. The apparatus may determine a tunnel overhead size between the second network interface and the first network interface. The apparatus may select a transport protocol to generate a packet according to the second MTU configuration and the tunnel overhead size. The apparatus may transmit the packet via the second network interface.

公开(公告)号：US10142251B2

公开(公告)日：2018-11-27

申请号：US15005285

申请日：2016-01-25

Applicant: MEDIATEK INC.

Inventor： Chien-Chun Huang-Fu ,  Weirong Chu ,  Yu-Syuan Jheng

IPC: H04L12/805 ,  H04L12/727 ,  H04W28/12 ,  H04W72/04 ,  H04L29/08 ,  H04L29/06 ,  H04W28/18

Abstract: A method of control Maximum Transmission Unit (MTU) reporting and discovery using AT commands is proposed. In communications networks, the MTU of a communication protocol of a layer is the size (in bytes or octets) of the largest protocol data unit that the layer can pass onwards. In an IP network, IP packets may be fragmented if the supported MTU size is smaller than the packet length. In accordance with one novel aspect, the packet data protocol (PDP) context of a packet data network (PDN) connection comprises MTU information. By introducing MTU information to the PDP contexts, TE can use AT commands to query MTU parameters from the network and thereby avoid fragmentation. TE can also use AT command to set MTU parameters and thereby control MTU discovery.

公开(公告)号：US10080109B2

公开(公告)日：2018-09-18

申请号：US15249552

申请日：2016-08-29

Applicant: MEDIATEK INC.

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

IPC: H04B7/00 ,  H04W4/08 ,  H04W4/10 ,  H04W76/40 ,  H04W36/32 ,  H04W4/06 ,  H04W72/00 ,  H04W36/08 ,  H04W76/00 ,  H04W74/00 ,  H04L5/00 ,  H04L12/18 ,  H04W24/08 ,  H04W36/00 ,  H04W36/30 ,  H04W72/12

CPC classification number: H04W4/08 ,  H04L5/0037 ,  H04L12/185 ,  H04L12/1886 ,  H04W4/06 ,  H04W4/10 ,  H04W24/08 ,  H04W36/0007 ,  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. In one embodiment, The UE requests to switch the DL multicast traffic from the multicast MBMS bearer to the unicast EPS bearer upon detecting that the UE is approaching an MBMS coverage boundary. In another embodiment, the UE transmits an indication of preferred target cells to the network before performing a handover and thereby maintaining multicast service continuity of the group communication.

公开(公告)号：US10034325B2

公开(公告)日：2018-07-24

申请号：US15273921

申请日：2016-09-23

Applicant: MEDIATEK INC.

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

IPC: H04W48/06 ,  H04W76/18 ,  H04W28/02 ,  H04W76/02 ,  H04W52/02

CPC classification number: H04W76/18 ,  H04W28/0289 ,  H04W48/06 ,  H04W52/0209 ,  Y02D70/00 ,  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.

公开(公告)号：US20180199281A1

公开(公告)日：2018-07-12

申请号：US15862646

申请日：2018-01-05

Applicant: MEDIATEK INC.

Inventor： Chien-Chun Huang-Fu ,  Yuan-Chieh Lin

IPC: H04W48/20 ,  H04W76/16 ,  H04L29/06

CPC classification number: H04W76/16 ,  H04L65/1016 ,  H04L67/14 ,  H04W28/08 ,  H04W36/14 ,  H04W48/20 ,  H04W76/11 ,  H04W76/30 ,  H04W84/12 ,  H04W88/02 ,  H04W88/06 ,  H04W88/16 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/12 ,  Y02D70/122 ,  Y02D70/1224 ,  Y02D70/124 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/14 ,  Y02D70/142 ,  Y02D70/23 ,  Y02D70/26

Abstract: Solutions are proposed to facilitate the support of 3GPP PS_Data_Off feature. The PS_Data_Off feature prevents transport via 3GPP access of all IP packets except those related to 3GPP PS_Data_Off Exempt Services. In one example, signaling storms due to frequent PS_Data_Off reconfiguration are prevented. In another example, for multi-SIM devices and for devices that supporting WiFi access, UE reconfigures the PS_Data_Off feature upon a triggering condition is satisfied. In yet another example, upon status change of PS_Data_Off feature, UE initiates RAT change to improve performance, to reduce power consumption and cost, and to maintain service continuity. Furthermore, new AT commands and parameters are introduced to enable the PS_Data_Off feature.

公开(公告)号：US20170303114A1

公开(公告)日：2017-10-19

申请号：US15481448

申请日：2017-04-06

Applicant: MEDIATEK INC.

Inventor： Johan Johansson ,  Chia-Chun Hsu ,  Chien-Chun Huang-Fu

IPC: H04W8/22 ,  G10L19/24 ,  H04W72/04 ,  G10L19/002 ,  H04W88/02

CPC classification number: H04W8/22 ,  G10L19/002 ,  G10L19/24 ,  H04W72/04 ,  H04W88/02

Abstract: Apparatus and methods are provided for enhanced codec control. In one novel aspect, a method includes receiving a codec control command by a user equipment (UE) in a wireless network, determining if the recommended codec characteristic will be applied to a codec executing on the UE, and adjusting a characteristic of the codec executing on the UE based on the recommended codec characteristic. The UE is connected with a radio access network (RAN) and the codec control command includes a recommended codec characteristic. In another novel aspect, the recommended codec characteristic is a maximum bitrate. In another embodiment, the recommended codec characteristic is a type of codec. In yet another novel aspect, the recommended codec characteristic is a radio resource allocation command. In another novel aspect, the UE determines all available codec bitrates that can be performed by the UE and communicates the bitrates before receiving the codec control command.

公开(公告)号：US09769750B2

公开(公告)日：2017-09-19

申请号：US15334006

申请日：2016-10-25

Applicant: MEDIATEK INC.

Inventor： Yu-Syuan Jheng ,  Chien-Chun Huang-Fu ,  Chia-Ming Chou

IPC: H04W52/02 ,  H04W28/02 ,  H04W28/12 ,  H04W52/14 ,  H04W52/28

CPC classification number: H04W52/0212 ,  H04W28/0221 ,  H04W28/0273 ,  H04W28/12 ,  H04W52/0216 ,  H04W52/0258 ,  H04W52/146 ,  H04W52/281 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/21

Abstract: Methods for enhanced UE data transmission for power consumption optimization are disclosed. A UE detects UE conditions and determines a UE traffic characteristic. The UE performs power consumption optimization based on the traffic characteristic. In one novel aspect, based on the UE condition, the UE determines that the traffic characteristic is low priority traffic or mobile originated only traffic. In one embodiment, the UE aligns prescheduled low priority data transmission with mobility management messages, or group multiple low priority prescheduled data transmission together. In another embodiment, the UE reduces NAS retry process upon detecting application triggered low priority traffic. In another embodiment, the UE turns off RF module until next data transmission for MO only traffic. In another novel aspect, the UE detects and sends UE conditions to the network. The network determines a UE traffic characteristic and performs power consumption optimization accordingly.

公开(公告)号：US09462618B2

公开(公告)日：2016-10-04

申请号：US14198892

申请日：2014-03-06

Applicant: MEDIATEK INC.

Inventor： Chien-Chun Huang-Fu ,  Yu-Syuan Jheng ,  Wei-Chiang Peng ,  Chia-Hung Tsai ,  Yih-Shen Chen

IPC: H04W76/02 ,  H04L29/06

CPC classification number: H04W76/11 ,  H04L65/1006 ,  H04L65/103 ,  H04L65/104 ,  H04L65/1069 ,  H04L65/1096 ,  H04L65/80

Abstract: Methods and apparatus are provided for a voice over LTE system to shorten the call set up time. In one novel aspect, the mobile origination (MO) UE starts the UE-initiated dedicated resource allocation before receiving any responses from the remote UE. In another embodiment, the mobile termination (MT) UE starts the UE-initiated dedicated resource allocation upon receiving the INVITE from the remote UE. In one embodiment, the UE adjusts the timeout value based on the PLMN information in its PLMN database. The timeout value can be set to be zero if early reservation is allowed. Upon timer expires, the UE starts UE-initiated dedicated resource allocation. In one novel aspect, the MO UE retrieves the codec information of a remote UE from its peer profile information database and uses a matching codec in its INVITE message. In another embodiment, the MT MO includes the SDP answer in its 180 RINGING message.

Abstract translation: 为LTE系统的语音提供方法和装置，以缩短呼叫建立时间。 在一个新颖的方面，移动发起（MO）UE在接收到来自远程UE的任何响应之前启动UE发起的专用资源分配。 在另一个实施例中，移动终端（MT）UE在从远程UE接收到INVITE时启动UE发起的专用资源分配。 在一个实施例中，UE基于其PLMN数据库中的PLMN信息来调整超时值。 如果允许提前预约，超时值可以设置为零。 定时器超时后，UE启动UE发起的专用资源分配。 在一个新颖的方面，MO UE从其对等体简档信息数据库中检索远程UE的编解码器信息，并在其INVITE消息中使用匹配的编解码器。 在另一个实施例中，MT MO包括其180RINGING消息中的SDP应答。

公开(公告)号：US20160286527A1

公开(公告)日：2016-09-29

申请号：US15172258

申请日：2016-06-03

Applicant: MEDIATEK INC.

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

IPC: H04W72/00 ,  H04L5/00 ,  H04W4/10 ,  H04L12/18 ,  H04W24/08

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。