Method for self-recovering registration information of IMS network AS

TLDR: In this paper, a method for self-recovering registration information of an application server (AS) in an internet protocol multimedia subsystem (IMS), and relates to an IP multimedia subsystem, is described.

Abstract: The invention discloses a method for self-recovering registration information of an application server (AS) in an internet protocol multimedia subsystem (IMS), and relates to an IP multimedia subsystem (IMS, IP Multiplea Subsystem). The method comprises the following steps: after an application server (AS) loses registration information of all users, an Applications Server sends the registration information to the application server; the AS is triggered by the call request to inquire from a local server (HSS, Home Subscriber Server); the registration information is recovered again, the business service can be provided for the user immediately, the business recovery time is shortened as soon as possible, the average fault time of the IMS system is remarkably reduced, and the stability of the business provided by the IMS network is improved.