slow_decreas-8+pf.ch

对IEEE 802.11e里的分布式信道接入算法EDCA进行改进

#nodes  channel_use 	collision_rate 
2  10.142633326 0.000000000 
4  20.323830273 17.724273998 
6  30.600837998 36.030104563 
8  41.174172009 83.046645035 
10  51.653098389 138.603614469 
12  62.310094970 203.607782421 
14  65.510608449 239.466011187 
16  66.099279119 265.908688231 
18  65.389195203 297.768332453 
20  65.213977089 323.202895728 
22  64.799352526 352.481888796 
24  64.046322628 381.064052948 
26  63.006590557 419.064597131 
28  62.638553323 440.070856437 
30  62.403544909 467.789032788 
32  61.529870161 494.504273675 
34  60.987311841 528.080493348 
36  60.547902047 557.823830042 
38  59.817438054 592.676734442 
40  59.225470593 625.527762081 
42  58.560455196 665.543868917 
44  57.607220237 716.126328879 
46  56.909690355 766.129229912 
48  56.093286986 814.271517277 
50  55.449405704 856.276565952