You would use a Mobile IP solution, rather than DHCP or a simple WLAN, when you are interested in which of the following?
Always-on IP mobility
Stationary IP communication
What is the difference between nomadicity and mobility in the context of Mobile IP?
What are the four requirements that a mobility solution must address?
Link-layer mobility protocols by themselves are capable of handling interaccess technology handovers.
IP layer mobility allows all IP-enabled applications, whether they use TCP, UDP, or another transport protocol, to seamlessly inherit full mobility across a diverse range of access link types.