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：US20250088954A1

公开(公告)日：2025-03-13

申请号：US18826606

申请日：2024-09-06

Applicant: MEDIATEK INC.

Inventor： Chia-Lin Lai ,  Tze Jie Tan ,  Yuan-Chieh Lin ,  Yu-Hsin Lin

IPC: H04W48/18

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The method may be performed by a mobile device. In certain configurations, the mobile device registers a first network access of a first public land mobile network (PLMN). After registering to the first network access, the mobile device determines, based on first information, whether a second network access of a PLMN or a Standalone Non-Public Network (SNPN) is allowed for the UE to register thereto. In response to determining the second network access is allowed, the mobile device selects the second network access based on the first information, and registers to the second network access. The second network access may be a network access of the first PLMN, or may be a network access of a second different PLMN or the SNPN.

公开(公告)号：US20230354455A1

公开(公告)日：2023-11-02

申请号：US18119495

申请日：2023-03-09

Applicant: MEDIATEK INC

Inventor： Yuan-Chieh Lin ,  Chia-Lin Lai

IPC: H04W76/20 ,  H04W76/30 ,  H04W60/04

CPC classification number: H04W76/20 ,  H04W76/30 ,  H04W60/04

Abstract: A method of handling a service request from a UE camped on a CAG cell with emergency PDU session is proposed, where the UE is not authorized to access the current CAG cell. When the UE-maintained CAG related configuration is not synchronized with the NW-maintained CAG related configuration, the UE may try to access a CAG cell and sends a service request, but the NW may determine that the CAG cell is not suitable. Because the UE has an existing emergency PDU session, the network will accept the service request, and locally releases all non-emergency PDU sessions associated with 3GPP access. Specifically, the network will locally release SA non-emergency PDU sessions associated with 3GPP access, or MA PDU sessions with only 3GPP access user-plane resources, or 3GPP user-plane resources of MA PDU sessions with both 3GPP and non-3GPP access user-plane resources.

公开(公告)号：US20230354244A1

公开(公告)日：2023-11-02

申请号：US18119533

申请日：2023-03-09

Applicant: MEDIATEK INC.

Inventor： Yuan-Chieh Lin ,  Chia-Lin Lai

IPC: H04W60/06

CPC classification number: H04W60/06

Abstract: A method of handling deregistration procedure with updated a CAG related configuration is proposed. From the network perspective, an AMF receives a DEREGISTRATION REQUEST message from a UE in a CAG cell that broadcasts a list of supported CAG-IDs. The AMF determines that a CAG-ID is supported by the CAG cell and included in the CAG related configuration of the UE. However, the CAG-ID is associated with validity or restriction information, and the corresponding validity or restriction criteria are not met. In response to the UE-initiated DEREGISTRATION REQUEST message, the AMF initiates a de-registration procedure and send a network-initiated DEREGISTRATION REQUEST message to the UE, including a 5GMM cause value. The network-initiated DEREGISTRATION REQUEST message can also include the updated CAG related configuration for UE. Upon receiving the DEREGISTRATION REQUEST message, the UE can update the UE-maintained CAG related configuration accordingly.

公开(公告)号：US20230354176A1

公开(公告)日：2023-11-02

申请号：US18129053

申请日：2023-03-30

Applicant: MEDIATEK INC.

Inventor： Chia-Lin Lai ,  Yuan-Chieh Lin

IPC: H04W48/18 ,  H04W48/10 ,  H04W60/04 ,  H04W72/56

CPC classification number: H04W48/18 ,  H04W48/10 ,  H04W60/04 ,  H04W72/56 ,  H04W84/042

Abstract: A method for PLMN selection when UE supports accessing CAG/PNI-NPN as hosting network for localized services is proposed. When a UE is registered to a first PLMN as a non-hosting network, a cell of a second PLMN may become available for localized service. The UE can select and register to a second PLMN as a hosting network even if the second PLMN has a lower PLMN priority than the first PLMN based on traditional PLMN priority order. If multiple PLMNs are available for localized services, then the UE can select and register to a PLMN based on priority information for hosting network. The priority information for hosting network can be 1) reusing traditional PLMN priority order; 2) a new configuration for hosting network selection priority; 3) based on validity information.

公开(公告)号：US20230354155A1

公开(公告)日：2023-11-02

申请号：US18119523

申请日：2023-03-09

Applicant: MEDIATEK INC.

Inventor： Chia-Lin Lai ,  Yuan-Chieh Lin

IPC: H04W48/10 ,  H04W48/04

CPC classification number: H04W48/04 ,  H04W48/10 ,  H04W84/042

Abstract: A method of a UE determining whether a current camped CAG cell is suitable and thereby entering limited service state for PNI-NPN as a hosting network is provided. When the PNI-NPN is a hosting network providing localized services, one or more allowed CAG IDs are associated with validity information per UE stored configuration, e.g., time and/or location validity criteria. Once a CAG cell is selected and camped by the UE in a PLMN, the UE needs to consider whether the current CAG cell is suitable for obtaining normal service from the PLMN. If the hosting network functionality is not enabled (by user), or if the time and/or location validity criteria associated with CAG-IDs broadcasted by the current CAG cell are not met, then the current CAG cell is not suitable. As a result, the UE enters limited service state, and triggers cell reselection or PLMN selection procedure.

公开(公告)号：US20230327753A1

公开(公告)日：2023-10-12

申请号：US18116783

申请日：2023-03-02

Applicant: MEDIATEK INC.

Inventor： Yuan-Chieh Lin ,  Marko Niemi

IPC: H04B7/185 ,  H04W48/18

CPC classification number: H04B7/18545 ,  H04W48/18

Abstract: A method of periodically attempting to access the HPLMN or an EHPLMN with higher priority in NTN systems with discontinuous coverage is proposed. A UE registered in VPLMN starts a timer T to periodically attempt to obtain service on its HPLMN or EHPLMN. When access stratum is deactivated due to discontinuous coverage in NTN, the UE does not stop the timer T, and postpone the periodic attempts to a later time, e.g., upon or after the UE activates the access stratum.

公开(公告)号：US20230232323A1

公开(公告)日：2023-07-20

申请号：US18085395

申请日：2022-12-20

Applicant: MEDIATEK INC.

Inventor： Chia-Lin Lai ,  Yuan-Chieh Lin

IPC: H04W48/18 ,  H04W76/10 ,  H04W60/04

CPC classification number: H04W48/18 ,  H04W76/10 ,  H04W60/04 ,  H04W84/042

Abstract: A method of provisioning UE Route Selection Policy (URSP) rules received from a non-subscribed Stand-alone Non-public Network (SNPN) registered using credentials from a credentials holder (CH) is provided. After a UE register to the non-subscribed SNPN using credentials from the CH, the UE may establish a PDU session for accessing services n the SNPN. Prior to establishing the PDU session, the UE checks the corresponding URSP rules that can be used in the SNPN. If the UE is signaled with URSP rules by the registered non-subscribed. SNPN, UE should store the URSP rules and then apply those URSP rules for PDU session establishment when the UE access the services in the non-subscribed SNPN.

公开(公告)号：US20230135662A1

公开(公告)日：2023-05-04

申请号：US17963178

申请日：2022-10-10

Applicant: MEDIATEK INC.

Inventor： Yuan-Chieh Lin ,  Chi-Hsien Chen

IPC: H04W36/00 ,  H04W52/02 ,  H04W68/00

Abstract: A method of applying power-saving feature assistance information for emergency PDU session or PDN connection for emergency bearer service associated with 3GPP access is provided. In 5GS, when an emergency PDU session (associated with 3GPP access) is successfully established after the UE received the Negotiated PEIPS assistance information IE during the last registration procedure, the UE does not use the PEIPS assistance information until the emergency PDU session is successfully moved out of 5GS 3GPP access. In EPS, when an PDN connection for emergency bearer service is successfully established after the UE received the Negotiated WUS assistance information IE during the last registration (Attach/TAU) procedure, the UE does not use the WUS assistance information until the PDN connection for emergency bearer service is successfully moved out of EPS.

公开(公告)号：US11553549B2

公开(公告)日：2023-01-10

申请号：US17368820

申请日：2021-07-06

Applicant: MEDIATEK INC.

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

IPC: H04W76/25 ,  H04W60/00 ,  H04W76/10 ,  H04W56/00 ,  H04W76/30 ,  H04W80/02 ,  H04W84/04

Abstract: A PDU session status information element (IE) is used to bi-directionally synchronize the state of a multi-access (MA) Protocol data unit (PDU) session between UE and NW. In the downlink, the PDU session status IE is included in a 5GMM message sent from NW to UE over an access type, and it indicates the user plane resources are NOT established at NW side on the access type the 5GMM message is sent over. For MA PDU sessions having user plane resources established in the UE side only on the access type the 5GMM message is sent over, the UE performs a local release of those MA PDU sessions. For MA PDU sessions having user plane resources established in the UE side on both access types, the UE performs a local release on the user plane resources on the access type the 5GMM message is sent over.