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.