Simone, > -- how does CORE manage distance. In fact I have to reproduce real distances, > 100 m, 500 m and 1000 m. > -- do I have to draw my network playing with coordinates. I mean > NODE1(X1,Y1), NODE2(X2,Y2) and then for the first scenario (i.e. 100m) I > should have X2-X1 = 100 and Y2-Y1=0. Of course setting up the right scale in > canvas options Scale 100pixel =100m. > > - Pathloss: -- If I use 80211abg model in EMANE which mode do I have to > select? 2ray or pathloss? -- If I do have to use pathloss mode, do I > have to calculate separately the pathloss for 100m, 500m and 1000m and > then create Events in the PathlossEventGenerator?
Currently your options for EMANE loss between nodes (pathloss) are: 1. X,Y locations using GUI and properly setting the pixels-per-meter scale 2. lat/long/alt location events using 2-ray/freespace pathloss mode 3. using pathloss events, directly specify dB path loss between node pairs If you're using #2, a tool like Google Earth or similar may help with authoring geographic waypoints; for #3 it seems that you really would need to understand what you were doing and what the SINR curves look like... > Last about CORE, if I launch a scenario via python similarly as described > here: http://pf.itd.nrl.navy.mil/pipermail/core-users/2012-July/000980.html > and then I link the CORE GUI to this session. > May I change parameters, e.g. pathloss mode to use PathlossEvent Generator? > I have some doubts that these changes don't have any effect on the emulation. Attached is an example CORE Python script that adds N nodes to an EMANE 802.11 network. In this example, I've changed the pathloss mode to 'pathloss'. You can see the resulting setting in /tmp/pycore.*/*phy.xml. You could change any of the 802.11 MAC/PHY parameters at that same line in the code. I'll include this example in the CORE source under core/daemon/examples/netns/ (for future snapshots/releases.) -Jeff
emane80211.py
Description: emane80211.py
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