公开(公告)号：US20180351785A1

公开(公告)日：2018-12-06

申请号：US15614758

申请日：2017-06-06

Applicant: MEDIATEK INC.

Inventor： Shang-Ru MO ,  Yung Hsiang HSIEH ,  Yen-Chun HSU

IPC: H04L12/24 ,  H04W76/02 ,  H04W48/00

CPC classification number: H04L41/0654 ,  H04W36/0005 ,  H04W36/0033 ,  H04W48/17 ,  H04W76/18 ,  H04W76/19

Abstract: An user equipment and a data connection recovery method thereof are provided. The user equipment transmits at least one UDP query packets to a robust server via the base station, and determines that there is no response from the robust server during a default period. Then the user equipment determines that a data connection with a backhaul network is abnormal between the base station and the backhaul network. Accordingly, the user equipment transmits a trigger packet to the backhaul network via the base station under NAS protocol and recovers the data connection with the backhaul network.

公开(公告)号：US20200275305A1

公开(公告)日：2020-08-27

申请号：US16795421

申请日：2020-02-19

Applicant: MEDIATEK INC.

Inventor： Chien-Chun HUANG-FU ,  Yu-Chieh TIEN ,  Chi-Hsien CHEN ,  Shang-Ru MO

IPC: H04W28/02 ,  H04W28/12 ,  H04W76/25 ,  H04W80/10

Abstract: A method can include receiving a non-access stratum (NAS) message for establishing or modifying a protocol data unit (PDU) session at a user equipment (UE) from a core network, determining whether there is a quality of service (QoS) flow description resulting from the establishment or modification of the PDU session that is associated with a guaranteed bit rate (GBR) QoS flow of the PDU session, and invalid, and when it is determined that there is the invalid QoS flow description associated with the GBR QoS flow of the PDU session, performing an error handling operation.