4.2.5. Experiment Five

Aim: A comparative analysis has been done with an optimization model dealing with the recovery of HLR mobility databases presented in [40]. In this work, analytical performance results evaluation for the location updating scheme have been done for the mobility database failure recovery under some assumptions. The lost incoming calls cost is calculated versus the system probability distribution for the recovery time. Therefore, in our proposal, a simulation for a traffic analysis with random log file sizes is done into failure recovery time to calculate the lost packet rates.

Main Results: The results in Figure 8 show a significant decrease in the average lost packets in the proposed model compared to the comparative protocol under different failure recovery time.

Discussion: That is because the proposed model switched between a pool of recovery algorithms that may suitable for any environment rather than using a fixed recovery method that may not be suitable, which leads to the retrieval system not constantly updating its database in a proper time. Thus, it reduces the packet loss rate.
