公开(公告)号：US20230100822A1

公开(公告)日：2023-03-30

申请号：US17901845

申请日：2022-09-01

Applicant: MEDIATEK INC.

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

IPC: H04W40/02

Abstract: A method for route selection policy (URSP) rule matching supporting redundant PDU session is proposed. When an application is executed, the upper layer of a UE sends the application information to URSP entity for matching a URSP rule. The UE selects and evaluates a route selection descriptor (RSD) from a list of RSDs of a selected URSP rule to be matched with a PDU session. If there is a “PDU session pair ID type” or “RSN type” route selection descriptor component in an RSD, and there is also “multi-access preference type” descriptor component, or a “preferred access type” descriptor component set to “non-3GPP access” in the same RSD, UE ignores the RSD since it is invalid for a redundant PDU session.

公开(公告)号：US20220369192A1

公开(公告)日：2022-11-17

申请号：US17719093

申请日：2022-04-12

Applicant: MEDIATEK INC.

Inventor： Chien-Chun Huang-Fu

IPC: H04W36/14 ,  H04W36/00

Abstract: A method for S-NSSAI handling of a 5GS capable UE supporting session continuity between 3GPP and non-3GPP interworking is proposed. The UE maintains a PDN connection/PDU session. The UE performs interworking among S1 mode, N1 mode (including 3GPP and non-3GPP access), and ePDG. The UE associates the existing S-NSSAI with the new PDN connection/PDU session after interworking, no matter whether the S-NSSAI is provided by the network or not. The UE can update the S-NSSAI upon receipt of new value from the network. When interwork to N1 mode, the UE applies the S-NSSAI.

公开(公告)号：US11419174B2

公开(公告)日：2022-08-16

申请号：US16742918

申请日：2020-01-15

Applicant: MEDIATEK INC.

Inventor： Ren-Huang Liu ,  Chien-Chun Huang-Fu

IPC: H04W76/19 ,  H04W76/18 ,  H04W88/02 ,  H04W80/10 ,  H04W8/08

Abstract: A connection recovery method for recovering a connection between a communications apparatus and a data network includes: receiving a first message indicating a non-3GPP access from the 3GPP network device in a CM-IDLE state in the non-3GPP access network; transmitting a second message to the 3GPP network device via 5GMM protocol over 3GPP control plane to establish the user plane resources for the non-3GPP PDU session; receiving a third message indicating that the user plane resources cannot be reestablished; and transmitting to the 3GPP network device a service request message via the 5GMM protocol over the 3GPP Internet PDU session of 3GPP user plane to reestablish the user plane resources, or a PDU session establishment request message via 5GSM protocol over the 3GPP control plane to handover the non-3GPP PDU session from the non-3GPP access network to the 3GPP access network in response to the third message.

公开(公告)号：US11259205B2

公开(公告)日：2022-02-22

申请号：US16866787

申请日：2020-05-05

Applicant: MEDIATEK INC.

Inventor： Chien-Chun Huang-Fu ,  Yu-Hsin Lin ,  Po-Ying Chuang

IPC: H04W28/02 ,  H04L65/1016 ,  H04W76/25 ,  H04W80/10

Abstract: A method of supporting IMS signaling over EPS bearer or QoS flow upon inter-system change between EPS and 5GS is proposed. When inter-system change from 5GS to EPS occurs, a PDU session is converted to a PDN connection having multiple EPS bearers. The EPS bearer mapped from the QoS flow that is used for IMS signaling in 5GS is the EPS bearer for IMS signaling in EPS. When inter-system change from EPS to 5GS occurs, a PDN connection is converted to a PDU session having multiple QoS flows. The QoS flow that is associated with the default QoS rule is the QoS flow for IMS signaling in 5GS, regardless of which EPS bearer is used for IMS signaling in EPS.

公开(公告)号：US11246054B2

公开(公告)日：2022-02-08

申请号：US16828090

申请日：2020-03-24

Applicant: MEDIATEK INC.

Inventor： Chien-Chun Huang-Fu ,  Shang-Ru Mo

IPC: H04W28/02 ,  H04W76/10

Abstract: A method can include receiving a “create new evolved packet system (EPS) bearer” operation code in a mapped EPS bearer contexts information element (IE) in a first protocol data unit (PDU) session modification command message for creating a mapped EPS bearer context at a user equipment (UE) in a wireless communication system, and when there is neither a quality of service (QoS) flow descriptions IE in the first PDU session modification command message indicating a QoS flow description corresponding to an EPS bearer identity (EBI) in the mapped EPS bearer context, nor an existing QoS flow description at the UE corresponding to the EBI included in the mapped EPS bearer context, sending a PDU session modification request message including a mapped EPS bearer contexts IE to delete the mapped EPS bearer context.

公开(公告)号：US11223988B2

公开(公告)日：2022-01-11

申请号：US16366125

申请日：2019-03-27

Applicant: MEDIATEK INC.

Inventor： Chien-Chun Huang-Fu ,  Po-Ying Chuang

IPC: H04W36/14 ,  H04W36/00 ,  H04L29/08 ,  H04W24/02 ,  H04W76/38 ,  H04W28/24 ,  H04W60/06 ,  H04L12/851 ,  H04L12/857 ,  H04L12/863 ,  H04L29/06 ,  H04W28/02 ,  H04W88/02 ,  H04W84/04

Abstract: A method of managing default QoS rules for PDU session is proposed. A PDU session defines the association between the UE and the data network that provides a PDU connectivity service. Each PDU session is identified by a PDU session ID, and may include multiple QoS flows and QoS rules. There can be more than one QoS rule associated with the same QoS flow. A default QoS rule is required to be sent to the UE for every PDU session establishment and it is associated with a QoS flow. Within a PDU session, there should be one and only one default QoS rule. In one novel aspect, UE behavior and error handling for proper QoS rule management is defined for PDU session establishment and modification procedures to enforce the one and only one default QoS rule policy.

公开(公告)号：US11184934B2

公开(公告)日：2021-11-23

申请号：US16593490

申请日：2019-10-04

Applicant: MediaTek Inc.

Inventor： Chien-Chun Huang-Fu

IPC: H04W76/10 ,  H04W76/11 ,  H04W76/36 ,  H04W76/18 ,  H04W76/30 ,  H04W8/30 ,  H04W28/04 ,  H04W80/02 ,  H04W12/06 ,  H04W80/10 ,  H04W80/12

Abstract: Various examples and schemes pertaining to an AT-command for an always-on PDU session in mobile communications are described. A processor of an apparatus implemented as a user equipment (UE) establishes a protocol data unit (PDU) session between a modem of the apparatus and a network node of a wireless network in response to a trigger by an application executed on the processor. The processor forwards a query from the application to the modem for an indication provided by the network node on whether the established PDU session is an always-on PDU session. The processor then receives the indication provided by the network node from the modem.

公开(公告)号：US11160123B2

公开(公告)日：2021-10-26

申请号：US16593016

申请日：2019-10-04

Applicant: MEDIATEK INC.

Inventor： Chien-Chun Huang-Fu ,  Chi-Hsien Chen ,  Yu-Chieh Tien

IPC: H04B7/212 ,  H04W76/11 ,  H04W76/36 ,  H04W76/10 ,  H04W76/18 ,  H04W76/30 ,  H04W8/30 ,  H04W28/04 ,  H04W80/02 ,  H04W12/06 ,  H04W80/10 ,  H04W80/12

Abstract: A method of handling PDU session identity (PSI) mismatch for PDU session procedures is proposed. In case a user equipment (UE) receives a 5G session management (5GSM) message in which the PSI value indicates that the PDU session is in 5GSM state PDU SESSION INACTIVE, the UE stays in its current 5GSM state for the PDU session and responds with a 5GSM status message including a 5GSM cause #43 “Invalid PDU session identity” to reduce signaling and UE handling effort. In case the UE receives a 5GSM message in which the PSI value is a reserved or an assigned value, the UE stays in its current 5GSM state for the PDU session and ignores the 5GSM message to reduce signaling.

公开(公告)号：US11159976B2

公开(公告)日：2021-10-26

申请号：US16687166

申请日：2019-11-18

Applicant: MEDIATEK INC.

Inventor： Chien-Chun Huang-Fu ,  Shang-Ru Mo ,  Chi-Hsien Chen

IPC: H04W36/00 ,  H04W76/18 ,  H04W28/02 ,  H04W76/10 ,  H04W88/02 ,  H04W80/10 ,  H04W56/00 ,  H04W76/30

Abstract: A method of handling mapped Evolved Packet System (EPS) bearer context for invalid QoS flow description is proposed. During a PDU session establishment procedure or a PDU session modification procedure, a UE may receive a mapped EPS bearer context IE for creating a new mapped EPS bearer of a PDU session. If there is no corresponding QoS flow description associated to the new mapped EPS bearer, e.g., if there is no corresponding authorized QoS flow description IE in the PDU session establishment accept message or in the PDU session modification command message, then the UE should send another PDU session modification request message to the network to delete the new mapped EPS bearer context.

公开(公告)号：US11153797B2

公开(公告)日：2021-10-19

申请号：US16366106

申请日：2019-03-27

Applicant: MEDIATEK INC.

Inventor： Chien-Chun Huang-Fu ,  Po-Ying Chuang

IPC: H04W36/14 ,  H04W36/00 ,  H04L29/08 ,  H04W24/02 ,  H04W76/38 ,  H04W28/24 ,  H04W60/06 ,  H04L12/851 ,  H04L12/857 ,  H04L12/863 ,  H04L29/06 ,  H04W28/02 ,  H04W88/02 ,  H04W84/04

Abstract: A method of managing default QoS rules for PDU session is proposed. A PDU session defines the association between the UE and the data network that provides a PDU connectivity service. Each PDU session is identified by a PDU session ID, and may include multiple QoS flows and QoS rules. There can be more than one QoS rule associated with the same QoS flow. A default QoS rule is required to be sent to the UE for every PDU session establishment and it is associated with a QoS flow. Within a PDU session, there should be one and only one default QoS rule. In one novel aspect, UE behavior and error handling for proper QoS rule management is defined for PDU session establishment and modification procedures to enforce the one and only one default QoS rule policy.