Steady state analysis of P-MIP mobility management

Paging extensions for Mobile IP (P-MIP) was proposed to avoid unnecessary registration signaling overhead of Mobile IP (MIP) and there is a tradeoff between registration and paging signaling based on the probability that a mobile node (MN) is in active or idle state. This probability varies from MN to MN and changes even for a given MN as time goes by. It is, however, assumed to be a fixed value in P-MIP for simplicity. In this letter, the steady-state probability of active and idle states is derived using a semi-Markov chain approach and the performance of P-MIP is compared with MIP based on session-to-mobility ratio.