Bug 656 – rate controls do not affect wifi-clear-channel-cmu example program results

Bug 656 - rate controls do not affect wifi-clear-channel-cmu example program results

Summary:

rate controls do not affect wifi-clear-channel-cmu example program results

Status:	RESOLVED DUPLICATE of bug 655

Product:	ns-3
Component:	wifi
Version:	ns-3-dev
Platform:	All All

Importance:	P5 normal
Assigned To:	ns-bugs

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2009-08-07 19:29 EDT by Tom Henderson
Modified:	2009-08-12 20:26 EDT (History)

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Description From Tom Henderson 2009-08-07 19:29:59 EDT

From ns-3-users thread 8/3/09


Hi everyone, I tried to set different rate controls in wifi-clear-
channel-cmu example, but they all get the same results(even if I don't
set the rate control method).  Is this the expected behavior? Am I not
understanding somehing?


for example

wifi.SetRemoteStationManager ("ns3::ConstantRateWifiManager",
                                  "DataMode",StringValue(modes[i]),
                                   "ControlMode",StringValue(modes
[i]));


wifi.SetRemoteStationManager("ns3::IdealRateWifiManager");

Duy

------- Comment #1 From duy 2009-08-07 21:14:15 EDT -------

I think the result should be different for every rate control because of the
varied RSS.  Anyway, I tested two additional scenarios:
1) Fix two nodes 5000 meters apart
2) Set the receiver stationary and move the sender from within range to out of
range

There should be no communication at all in the first scenario, yet receiver is
still receiving packets.  Second scenario, the result is the same for all rate
controls.

------- Comment #2 From duy 2009-08-07 22:43:01 EDT -------

I removed 802.11b phy, and it gets zero packets with the "5000 meters apart"
scenario; however rate controls are still getting the same results in other
scenarios mentioned above.

------- Comment #3 From duy 2009-08-08 00:23:44 EDT -------

Ok, I did some more testing,  rate controls are now working normal using
802.11a instead.  So, the problem lies in 802.11b.  I think we can close this
bug report and open a report on 802.11b, if no one has done it.

------- Comment #4 From duy 2009-08-08 00:39:45 EDT -------


*** This bug has been marked as a duplicate of bug 655 ***

------- Comment #5 From Gary Pei 2009-08-12 20:26:45 EDT -------

(In reply to comment #2)
> I removed 802.11b phy, and it gets zero packets with the "5000 meters apart"
> scenario; however rate controls are still getting the same results in other
> scenarios mentioned above.
> 

(In reply to comment #4)
> 
> *** This bug has been marked as a duplicate of bug 655 ***
> 

Please see my comments in 655.