Fault detection method, gateway, user equipment, and communications system

摘要

Embodiments of the present invention provide a fault detection method, including discovering that a fault occurs in a DNS server or a service server related to a UE; performing, by a gateway, fault detection on the DNS server or the service server; and, after the fault is rectified, instructing the UE to establish a connection to the DNS server or the service server. Correspondingly, the embodiments of the present invention further provide a gateway, a UE, and a communications system, thereby avoiding frequent air interface release and connections, and frequent bearer deactivation and activation, which reduces the signaling overhead of the system, and enhances stability of a mobile network.

主权项

1. A fault detection method, comprising:
discovering, by a gateway, that a fault occurs in a domain name system (DNS) server or a service server related to a user equipment (UE); detecting, by the gateway, as a proxy for the UE, whether the fault is rectified; instructing, by the gateway, the UE to stop detecting whether the fault is rectified; and after detecting that the fault is rectified, instructing, by the gateway, the UE to establish a connection to the DNS server or the service server.