Addition of MPDU aggregation

Addition of MPDU aggregation

[Nazarius, 2014-12-17 10:28:21]

Hi all,
I was testing MPDU aggregation and HT rates in NS-3.21 using above patch.
Surprisingly 40MHz rates are giving null throughput in my tests.
Here is the output of the modified ht-wifi-network script
(https://www.sendspace.com/file/txfep2) that tests all available 1X1 MIMO rates:

No.	DataRate	Throughput
0	6.5		5.286
1	13		9.186
2	19.5		12.234
3	26		14.64
4	39		18.276
5	52		20.85
6	58.5		10.992
7	65		22.71
8	7.2		5.76
9	14.4		9.936
10	21.7		13.14
11	28.9		15.654
12	43.3		19.29
13	57.8		21.834
14	65		0
15	72.2		23.73
16	13.5		0
17	27		0
18	40.5		0
19	54		0
20	81		0
21	108		0
22	121.5	        0
23	135		0
24	15		0
25	30		0
26	45		0
27	60		0
28	90		0
29	120		0
30	135		0
31	150		0

Does anyone have any clue for it?

Thanks,
Nazar.

[gbadawy, 2014-12-17 14:00:16]

Hi Nazar,
You need to set ChannelBonding to true for 40MHz data rates. Also make sure
you are setting ShortGuardInterval to true for data rates that use short
guard interval

Regards,
Ghada

On Wed, Dec 17, 2014 at 5:28 AM, <seytnazarovsho@gmail.com> wrote:
>
> Hi all,
> I was testing MPDU aggregation and HT rates in NS-3.21 using above
> patch. Surprisingly 40MHz rates are giving null throughput in my tests.
> Here is the output of the modified ht-wifi-network script
> (https://www.sendspace.com/file/txfep2) that tests all available 1X1
> MIMO rates:
>
> No.     DataRate        Throughput
> 0       6.5             5.286
> 1       13              9.186
> 2       19.5            12.234
> 3       26              14.64
> 4       39              18.276
> 5       52              20.85
> 6       58.5            10.992
> 7       65              22.71
> 8       7.2             5.76
> 9       14.4            9.936
> 10      21.7            13.14
> 11      28.9            15.654
> 12      43.3            19.29
> 13      57.8            21.834
> 14      65              0
> 15      72.2            23.73
> 16      13.5            0
> 17      27              0
> 18      40.5            0
> 19      54              0
> 20      81              0
> 21      108             0
> 22      121.5           0
> 23      135             0
> 24      15              0
> 25      30              0
> 26      45              0
> 27      60              0
> 28      90              0
> 29      120             0
> 30      135             0
> 31      150             0
>
> Does anyone have any clue for it?
>
> Thanks,
> Nazar.
>
> https://codereview.appspot.com/164020043/
>

[Nazarius, 2014-12-18 02:50:22]

Hi Ghada!

Thanks for the point! I didn't know that we have to explicitly tell about
channel bonding in the scripts.
Now I have this kind of result:

No.	DataRate	Throughput
0	6.5		5.286
1	13		9.186
2	19.5		12.234
3	26		14.64
4	39		18.276
5	52		20.85
6	58.5		10.992
7	65		22.71
8	7.2		5.76
9	14.4		9.936
10	21.7		13.14
11	28.9		15.654
12	43.3		19.29
13	57.8		21.834
14	65		22.944
15	72.2		23.73
16	13.5		9.534
17	27		15.18
18	40.5		9.528
19	54		21.636
20	81		25.158
21	108		27.318
22	121.5		28.428
23	135		28.68
24	15		10.344
25	30		16.26
26	45		19.992
27	60		22.608
28	90		26.04
29	120		28.182
30	135		14.67
31	150		29.736

There seem to be some problem with OfdmRate135MbpsBW40MHzShGi rate since it's
producing only half of the throughput that it is supposed to yield.

Thanks,
Nazar

On 2014/12/17 14:00:16, gbadawy wrote:
> Hi Nazar,
> You need to set ChannelBonding to true for 40MHz data rates. Also make sure
> you are setting ShortGuardInterval to true for data rates that use short
> guard interval
> 
> Regards,
> Ghada
> 
> On Wed, Dec 17, 2014 at 5:28 AM, <mailto:seytnazarovsho@gmail.com> wrote:
> >
> > Hi all,
> > I was testing MPDU aggregation and HT rates in NS-3.21 using above
> > patch. Surprisingly 40MHz rates are giving null throughput in my tests.
> > Here is the output of the modified ht-wifi-network script
> > (https://www.sendspace.com/file/txfep2) that tests all available 1X1
> > MIMO rates:
> >
> > No.     DataRate        Throughput
> > 0       6.5             5.286
> > 1       13              9.186
> > 2       19.5            12.234
> > 3       26              14.64
> > 4       39              18.276
> > 5       52              20.85
> > 6       58.5            10.992
> > 7       65              22.71
> > 8       7.2             5.76
> > 9       14.4            9.936
> > 10      21.7            13.14
> > 11      28.9            15.654
> > 12      43.3            19.29
> > 13      57.8            21.834
> > 14      65              0
> > 15      72.2            23.73
> > 16      13.5            0
> > 17      27              0
> > 18      40.5            0
> > 19      54              0
> > 20      81              0
> > 21      108             0
> > 22      121.5           0
> > 23      135             0
> > 24      15              0
> > 25      30              0
> > 26      45              0
> > 27      60              0
> > 28      90              0
> > 29      120             0
> > 30      135             0
> > 31      150             0
> >
> > Does anyone have any clue for it?
> >
> > Thanks,
> > Nazar.
> >
> > https://codereview.appspot.com/164020043/
> >