| 摘要 |
<p>A method for realizing the IMS network reliability is provided, in order to solve the issue that the user service in existing IMS is interrupted for a long term as a result of invalidation of network entity during the time period from the user successfully registering to the user initiating reregistration; the method comprises: the first network entity in IMS network acquires whether the second network entity which stores the data associated with the user registration is invalid; and if the first network entity acquires that the second network entity is valid, then notifies the registered user to reregister. A method for acquiring the state change of the network entity within the IMS network is also provided.</p> |
