… reregistration at IMS as illustrated in Figure 1. UE exchanges messages over Gm interface to
initiate registration process … Therefore the delay of handover preparation is equal to time of …

… Therefore, we integrate the IMS AKA with the certificate to improve the registration procedure…
Then, we illustrate the C-IMS AKA for initial registration and re-registration procedures, …

… 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. …

… Second, during P-CSCF failure as well as the time device connects to new P-CSCF, IMS …
, where device initiates re-registration procedure with IMS network. Therefore, we can say P-…

… our work, therefore some performance tests of IMS can be … The re-registration request by
client 1 is sending back to IMS … The registration process was accomplished by receiving “200 OK…

… Therefore, the application of IMS streaming media … In this paper, the process of satellite access
to IMS and the … -server, if the registration fails, reregister is needed, and then open the SIP …

… Therefore, we analysing the work of the queuing system, in our case the IMS system. The …
performance only for registration scenarios (registration, reregistration and cancellation of …

… 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 …