公开(公告)号：US11570616B2

公开(公告)日：2023-01-31

申请号：US17633326

申请日：2020-08-07

Applicant: MEDIATEK INC.

Inventor： Yu-Cheng Huang ,  Chi-Chen Lee ,  Hao-Hsiang Chung ,  Yung-Chun Yang ,  Chien-Chun Huang-Fu

IPC: H04W12/03 ,  H04W76/10 ,  H04W60/04

Abstract: Methods and apparatus are provided for providing UE EPS capability information and receiving non-access stratum (NAS) security algorithm information for an interworking procedure in the 5GS network. In one novel aspect, the UE provides the UE EPS capability information in cleartext before the security mode procedure, and the NAS security algorithm information is included in a security mode command message during the security mode procedure. In one embodiment, the UE EPS capability information is an S1 mode indicator or the 5GMM capability information including the Si mode indicator. In another novel aspect, the network provides the NAS security algorithm information before interworking procedure from 5GS to LTE. In one embodiment, the network provides the NAS security algorithm information in the Registration Accept message. In another embodiment, the network provides the NAS security algorithm information in handover procedure from the 5GS to LTE.

公开(公告)号：US20240040459A1

公开(公告)日：2024-02-01

申请号：US18218099

申请日：2023-07-04

Applicant: MEDIATEK INC.

Inventor： Yuan-Chieh Lin ,  Yung-Chun Yang ,  Yu-Hsin Lin

IPC: H04W36/14 ,  H04W36/00

CPC classification number: H04W36/14 ,  H04W36/00222

Abstract: A method of performing intersystem change without N26 interface supported or not supported when a UE is registered to the same or different networks over 3GPP and non-3GPP accesses is proposed. UE registers to one or more PLMN/SNPN over 3GPP access and non-3GPP access. UE receives a REGISTRATION ACCEPT message over 3GPP access, which carries a first 5GS network feature support IE, which indicates that interworking without N26 interface not supported. UE also receives a REGISTRATION ACCEPT message over non-3GPP access, which carries a second 5GS network feature support IE, which indicates that interworking without N26 interface supported. UE ignores the second indication received over non-3GPP access and considers that N26 interface is supported for interworking. As a result, after intersystem change from 5G to 4G, UE triggers a TAU procedure over LTE in 4G EPS.

公开(公告)号：US20180176136A1

公开(公告)日：2018-06-21

申请号：US15844730

申请日：2017-12-18

Applicant: MEDIATEK INC.

Inventor： Yung-Chun Yang ,  Cheng-Jie Tsai ,  Tsern-Huei Lee ,  Guan-Yu Lin ,  Yung-Hsiang Liu ,  Jun-Hua Chou ,  Chia-Chun Hsu

IPC: H04L12/801 ,  H04L12/807

CPC classification number: H04L47/12 ,  H04L47/193 ,  H04L47/27 ,  H04L47/283 ,  H04L47/30

Abstract: Apparatus and methods are provided for TCP bufferbloat resolution. In one novel aspect, the TCP client monitors a TCP throughput, determines a TCP throughput stability based on a changing rate of the TCP throughput, adjusts a RWND size dynamically based on the determined TCP throughput stability, and sends the dynamically adjusted RWND size to the TCP server for flow control. In one embodiment, the TCP throughput is stable if the changing rate of an increase or decrease of the TCP throughput is smaller than a threshold, otherwise, the TCP throughput is unstable. The TCP client decreases the RWND size if the TCP throughput is stable, otherwise the TCP client increases the RWND size. In one embodiment, the increase of the RWND size uses the default RWND size adjustment method and the decrease of the RWND size is further depending on the increasing or decreasing state of the TCP client.

公开(公告)号：US20240040530A1

公开(公告)日：2024-02-01

申请号：US18218097

申请日：2023-07-04

Applicant: MEDIATEK INC.

Inventor： Yu-Hsin Lin ,  Yung-Chun Yang ,  Yuan-Chieh Lin

IPC: H04W60/00

CPC classification number: H04W60/005

Abstract: A method of determining UE registration status for a UE that is registered to different PLMN networks over 3GPP and non-3GPP accesses is proposed. The UE triggers registration to a second Public Land Mobile Network (PLMN) or Standalone Non-Public Network (SNPN) over a second access, and receives a REGISTRATION ACCEPT message from the second network over the second access. The REGISTRATION ACCEPT message carries a 5GS registration result IE having a 5GS registration result value. If the 5GS registration result value indicates that the UE is registered (or not registered) to a first network over a first access, then the UE may ignore the indication and considers the UE is not registered (or registered) to the first network over the first access.

公开(公告)号：US20240040496A1

公开(公告)日：2024-02-01

申请号：US18218101

申请日：2023-07-04

Applicant: MEDIATEK INC.

Inventor： YUAN-CHIEH Lin ,  Yung-Chun Yang ,  Yu-Hsin Lin

IPC: H04W48/18 ,  H04W48/16 ,  H04W60/00

CPC classification number: H04W48/18 ,  H04W48/16 ,  H04W60/00

Abstract: A method of determining UE access identity for a UE that is registered to the same or different PLMN networks over 3GPP and non-3GPP accesses is proposed. The UE registers to one or more Public Land Mobile Network (PLMN) or Standalone Non-Public Network (SNPN) over 3GPP access and non-3GPP access. If the UE registers to the same PLMN/SNPN over 3GPP and non-3GPP access, then the UE handles the UE access identity as one common parameters. On the other hand, if the UE registers to different PLMN/SNPN over 3GPP and non-3GPP, then the UE handles the UE access identity as two independent parameters. The access identity may comprise a priority indicator IE that is set to “Access Identity 1 valid” for MPS or “Access Identity 2 valid” for MCS.