Hi all, I am working for dsr analyse and simulation. When I simulate DSR using ns2-2.29, sometime I get very bad results, but sometime I can alse get normal results.
I simulated dsr protocol in such situation: In tcl: ifqlen set 50, 802.11 datarate set 11Mb, ratio range set 250m dsr all opt enable, including ring 0 search, cache reply, salvage, shorten, etc. cbr:50n-20mc-4rate scene:50n-300p-20M-900t-1500x-300y I generated six scene files using setdest.exe in the same scene situation as above show. the results: scene overhead（route/data/ratio）delay（s） pdf(send/recv/ratio) scene1：304901/184097/1.656198 0.426943 64292/55843/0.868584 scene2：7703/204136/0.037735 0.024476 64291/64208/0.998709 scene3：440132/188394/2.336232 0.767900 64211/50903/0.792746 scene4： 664971/232313/2.862393 0.679598 64479/30500/0.473022 scene5：227687/179718/1.266913 0.499662 64277/61165/0.951585 scene6：8151/157065/0.051896 0.012842 64377/64339/0.999410 I think only scene2 and scene6 are reasonable results, and others are bad results. In .tr files, the main reason of the dropping packets is ifq and arp. I have checked Maltz's article "The effects of on-demand behavior in routing protocols for multihop wireless ad hoc networks". Maltz did this simulation with datarate 2Mb, and all results seems OK. I don't know what's wrong with my simulation. Can anyone help me! Thank you very much. heyang 2007-04-27
