Analysis of Quality of Service in Wimax networks

 

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LIST OF TABLES 
 
TABLES 
Table 1 WiMAX/802.16 QoS Model............................................................................ 6 
Table 2 Example for jitter calculation ........................................................................ 31 
Table 3 Details for VOIP Codecs ............................................................................... 34 
LIST OF FIGURES 
FIGURES 
Figure 1 WiMAX Network IP-Based Architecture .................................................... 12 
Figure 2 Bandwidth allocation for different service classes...................................... 19 
Figure 3 Simulation Setup .......................................................................................... 24 
Figure 4 NS-2 architecture and set up......................................................................... 25 
Figure 5 NS-2 Simulation Example............................................................................ 27 
Figure 6 Throughput with number of nodes for BE service flow............................... 35 
Figure 7 Packet Loss with number of nodes for BE service flow .............................. 36 
Figure 8 Average Jitter with number of nodes for BE service flow ........................... 37 
Figure 9 Average Delay with number of nodes for BE service flow.......................... 38 
Figure 10 Throughput with number of nodes for rtPS service flow ........................... 39 
Figure 11 Packet Loss with number of nodes for rtPS ............................................... 40 
Figure 12 Average Jitter with number of nodes for rtPS............................................ 41 
Figure 13 Average Delay with number of nodes for rtPS .......................................... 42 
Figure 14 Throughput with number of nodes for UGS............................................... 43 
Figure 15 Packet Loss with number of nodes for UGS .............................................. 44 
Figure 16 Average Jitter with number of nodes for UGS........................................... 45 
Figure 17 Average Delay with number of nodes for UGS ......................................... 45 
Figure 18 Throughput with number of nodes for all service flows ............................ 46 
Figure 19 Packet Loss with number of nodes for all service flows ............................ 47 
Figure 20 Average Jitter with number of nodes for all service flows......................... 48 
Figure 21 Average Delay with number of nodes for all service flows ....................... 49 
Figure 23 Variation of Packet loss across different VOIP codecs............................. 51 

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Figure 24 Variation of Average jitter across different VOIP codecs.......................... 52 
Figure 26 Throughput with number of nodes for BE service flows ........................... 55 
Figure 27 Packet Loss with number of nodes for BE service flows........................... 56 
Figure 28 Average Jitter with number of nodes for BE service flows........................ 56 
Figure 29 Average Delay with number of nodes for BE service flows ...................... 57 
Figure 30 Throughput with number of nodes for rtPS service flows ......................... 58 
Figure 31 Packet Loss with number of nodes for rtPS service flows ......................... 59 
Figure 32 Average Jitter with number of nodes for rtPS service flows...................... 60 
Figure 33 Average Delay with number of nodes for rtPS service flows .................... 60 
Figure 34 Throughput with number of nodes for UGS service flows ........................ 61 
Figure 35 Packet Loss with number of nodes for UGS service flows ........................ 62 
Figure 36 Average Jitter with number of nodes for UGS service flows..................... 63 
Figure 37 Average Delay with number of nodes for UGS service flows ................... 64 
Figure 38 Variation of Throughput for all service flows for video traffic.................. 65 
Figure 39 Variation of Packet loss for all service flows for video traffic................... 66 
Figure 40 Variation of Average jitter for all service flows for video traffic .............. 67 
Figure 41 Variation of Average delay for all service flows for video traffic ............. 68 

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