公开(公告)号：US20190090165A1

公开(公告)日：2019-03-21

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 ,  H04W36/04 ,  H04W36/14 ,  H04W36/30 ,  H04L29/06 ,  H04W88/08

CPC classification number: H04W36/0022 ,  H04L65/1016 ,  H04L65/1063 ,  H04L65/1083 ,  H04W36/04 ,  H04W36/14 ,  H04W36/30 ,  H04W60/00 ,  H04W88/08

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.

公开(公告)号：US10219147B2

公开(公告)日：2019-02-26

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 ,  G10L19/002 ,  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：US20180359614A1

公开(公告)日：2018-12-13

申请号：US16106541

申请日：2018-08-21

Applicant: MEDIATEK INC.

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

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

Abstract: A method of supporting group communication over LTE MBMS is provided. A UE first establishes a unicast bearer in a 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 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：US10117279B2

公开(公告)日：2018-10-30

申请号：US14884913

申请日：2015-10-16

Applicant: MEDIATEK INC.

Inventor： Chi-Hsien Chen ,  Po-Ying Chuang ,  Chien-Chun Huang-Fu

IPC: H04W36/28 ,  H04W36/00 ,  H04W76/18 ,  H04W76/02 ,  H04W76/16 ,  H04W76/50

Abstract: A method of maintaining maximum number of bearers when maximum number of bearers reached is proposed. An enhanced SM/ESM procedure is proposed to synchronize between UE and network and to determine a precise maximum bearer number for protecting network resource and improving user experience. The UE determines the maximum bearer number based on a cause code contained in an SM reject message and updates the number under various network scenarios including system change.

公开(公告)号：US20180199395A1

公开(公告)日：2018-07-12

申请号：US15862644

申请日：2018-01-05

Applicant: Mediatek Inc.

Inventor： Chien-Chun Huang-Fu ,  Mohamed Abdelrazek El-Saidny ,  Yuan-Chieh Lin

IPC: H04W76/16 ,  H04W88/16

CPC classification number: H04W76/16 ,  H04L65/1016 ,  H04W28/08 ,  H04W36/14 ,  H04W48/20 ,  H04W76/11 ,  H04W84/12 ,  H04W88/02 ,  H04W88/06 ,  H04W88/16

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：US09980310B2

公开(公告)日：2018-05-22

申请号：US14884896

申请日：2015-10-16

Applicant: MEDIATEK INC.

Inventor： Po-Ying Chuang ,  Chi-Hsien Chen ,  Chien-Chun Huang-Fu

IPC: H04W76/02

CPC classification number: H04W76/18

Abstract: A method of enhanced session management procedure is proposed. A user equipment, upon receiving a rejected PDN connectivity request with a cause code, automatically alters the rejected factor to fit network restrictions based on the received cause code. The UE then retries the PDN connectivity procedure by sending a subsequent PDN connectivity request using the altered factor. By automatically altering the rejected factor and reattempting to establish an EPS bearer for data service without user interaction, possible permanent rejection can be avoided in case of user error or unawareness.

公开(公告)号：US20170324574A1

公开(公告)日：2017-11-09

申请号：US15584379

申请日：2017-05-02

Applicant: MEDIATEK INC.

Inventor： Chien-Chun Huang-Fu ,  Yu-Tien Yeh ,  Cheng-Hsiao Ko

IPC: H04L12/18 ,  H04W28/02 ,  H04L29/12 ,  H04L12/801

CPC classification number: H04L12/1877 ,  H04L29/12 ,  H04L47/12 ,  H04L47/2475 ,  H04L47/33 ,  H04W28/02 ,  H04W28/0273 ,  H04W28/0284 ,  H04W28/0289 ,  H04W28/12 ,  H04W48/04

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). Application specific access control is an application/service specific access control mechanism for the operator to allow/prevent new access attempts from particular, operator-identified applications/services in the UE in idle mode. However, a TE does not always know the applicability of application specific access control. In accordance with one novel aspect, a new AT command interface that can report application specific access control status to the TE is proposed. It reduces wasteful signaling overhead by retries from the TE. Through the new AT command interface, the TE can query application specific access control status. Via unsolicited result code (URC), the MT can detect application specific access control applicability status change and report updated status to the TE.

公开(公告)号：US09787596B2

公开(公告)日：2017-10-10

申请号：US15005329

申请日：2016-01-25

Applicant: MEDIATEK INC.

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

IPC: H04L12/70 ,  H04L12/805 ,  H04L12/727 ,  H04W28/12 ,  H04W72/04 ,  H04L29/08 ,  H04L29/06 ,  H04W28/18

CPC classification number: H04L47/365 ,  H04L29/08 ,  H04L45/121 ,  H04L47/36 ,  H04L69/166 ,  H04W28/12 ,  H04W28/18 ,  H04W72/0426

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：US20170041872A1

公开(公告)日：2017-02-09

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 ,  H04W52/14 ,  H04W52/28 ,  H04W28/02

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.

Abstract translation: 公开了用于功率消耗优化的增强的UE数据传输的方法。 UE检测UE条件并确定UE业务特性。 UE根据业务特性进行功耗优化。 在一个新颖的方面，基于UE条件，UE确定业务特性是低优先级业务或移动发起的业务。 在一个实施例中，UE将预调节的低优先级数据传输与移动性管理消息对齐，或者将多个低优先级预先调度的数据传输组合在一起。 在另一个实施例中，UE在检测到应用触发的低优先级业务时，减少NAS重试过程。 在另一个实施例中，UE关闭RF模块，直到下一次数据传输为MO仅流量。 在另一个新颖的方面，UE检测并向网络发送UE条件。 网络确定UE流量特性并相应地执行功耗优化。

公开(公告)号：US20160373902A1

公开(公告)日：2016-12-22

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: H04W4/08 ,  H04W4/06 ,  H04W4/10 ,  H04W72/12 ,  H04W36/30 ,  H04W74/00 ,  H04W36/08 ,  H04W36/00

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. 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.

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。 在一个实施例中，当UE正在接近MBMS覆盖边界时，UE请求将DL组播业务从组播MBMS承载切换到单播EPS承载。 在另一个实施例中，UE在执行切换之前向网络发送优选目标小区的指示，从而保持组通信的多播服务连续性。