**5.2.2 Analysis of jitter**

26 Mobile Networks

As shown in the (figure 35), in the time that the AMN is in the AHA zone (between t = 1.2s and t = 10s), the traffic experiences a delay below 250ms, this is due mainly to the fact that

Fig. 33. Scenario with 20 nodes

Fig. 34. Scenario with 30 nodes

**5.2.1 Analysis of delay** 

The (figure36) illustrates the jitter behavior as time in the simulation.

As it can be seen in figure 36, the jitter has a similar behavior to the delay during the first 10s of simulation, in the sense that both present the lowest values throughout the simulation in this range, but after the AMN moves towards the PAR/LER1 a huge peak of about 650ms is registered, this corresponds with the packet that experiences more than 700ms in delay in figure 80. After this, the jitter is stabilized below 50ms when the AMN is in the ANAR/LER2 zone (after t = 20s) and below 100ms when the AMN is in the APAR/LER1 zone (between the 11s and 18s or so). Additionally it is noted that the transfer that takes place near the instant t = 16s has no significant effects on the experienced fluctuation. Finally the average jitter during the simulation was 15.84ms.

Mechamisms to Provide Quality of Service on 4G New Generation Networks 29

During the simulation 1610 packets were sent from the AMN to the ACN, out of which 1586 reached their destination, leading to the loss of 24 packets, which corresponds to 1.49% of

The table 11 presents various facts to highlight: first, both the delay and the fluctuation do not exhibit increasing tendency as the number of nodes increases, this is important because

Fig. 37. Illustrate throughput vs. time

Fig. 38. TCP congestion window vs. time

**5.2.5 Analysis of lost packets** 

the total packets.

**5.2.6 Analysis of results** 

Fig. 36. Jitter vs. time
