… Second, IMS service remains unavailable to users during P-CSCF failure. Third, P-CSCF …
, where device initiates re-registration procedure with IMS network. Therefore, we can say that P…

… It becomes more challenging when a number of re-registration requests are also served …
Therefore if any emergency lunches bottle neck at CSCF it will highly effect IMS environment. …

… Therefore, the investigation of the IMS added delay in the registration … with the access
technology and IMS network [14]. A reregistration procedure modification was proposed in order to …

… Therefore, high availability is an infrastructure design that offers solutions to decrease …
IMS operators usually required this new registration after 10 times of re-registration without …

… management systems (IMS), and registration systems in national … quantitative; therefore, a
mixed-method approach was used … process, re-registration, and manufacturing sites [44, 45]. …

… If the S-CSCF has failed or is unreachable, a reregistration message is … Therefore, we
monitored the IMS interfaces to collect all messages that are related to SIP protocol inside the IMS …

… prediction of IMS signaling storms. Among this proposed … User's request mainly includes
registration request, re-registration … Therefore, we mainly consider CPU usage, CPU change rate…

… user, which may impact the entire system. Therefore, we have designed and proposed an
… in our scheme unless and otherwise required re-registration in unavoidable conditions. For …

… We are therefore driven to build an … sign up process, re-registration attempts by opponents
can hardly be impersonated, as gateway maintains a registration file with its own. Therefore, a …