Dear all,
Just an update to my previous query regarding the relation between WMM
and 802.11n:
Now from what I understand, WMM (802.11e) is part of the 802.11n
standard as it uses features (like block-Ack) in the new (MAC layer)
enhancements such as frame aggregation.
When WMM is activated (via hostapd: wmm_enabled=1) as well as frame
aggregation, I get around 230Mbps UDP/ 170Mbps TCP. When WMM is
deactivated I get 35 Mbps UDP and 27 Mbps TCP.
I tried to identify the causes of this decrease, so I disabled frame
Aggregation (A-MPDU) and disabled all the WMM associated parameters
like tx_queue_data* , wmm_ac_* (BK/BE/VI/VO) /(CW/TXOP/AIFS) etc. but
leaving the WMM option on (wmm_enabled=1). This gave around 45 Mbps
UDP and 33Mbps TCP.
So my question is what other WMM influencing factor is activated that
is causing the remaining throughput increase from 35 Mbps to 45 Mbps.
Also if someone could explain the WMM traffic identifier's (TID)
relevance in throughput improvement.
Thank you all very much
Hi,
Thank you, but I have read the discussion in that thread and it does
not answer my question.
I would be grateful someone could point out what other 802.11n
throughput improving enhancement other than frame aggregation(A-MPDU)
depend on WMM being enabled via hostapd.
Thanks
On Tue, Mar 8, 2011 at 5:20 AM, Mohammed Shafi <[email protected]> wrote:
> On Tue, Mar 8, 2011 at 2:39 AM, M. A. <[email protected]> wrote:
>> Dear all,
>>
>> Just an update to my previous query regarding the relation between WMM
>> and 802.11n:
>>
>> Now from what I understand, WMM (802.11e) is part of the 802.11n
>> standard as it uses features (like block-Ack) in the new (MAC layer)
>> enhancements such as frame aggregation.
>>
>> When WMM is activated (via hostapd: wmm_enabled=1) ?as well as frame
>> aggregation, I get around 230Mbps UDP/ 170Mbps TCP. When WMM is
>> deactivated I get 35 ?Mbps UDP and 27 Mbps TCP.
>>
>> I tried to identify the causes of this decrease, so I disabled frame
>> Aggregation (A-MPDU) and disabled all the WMM associated parameters
>> like tx_queue_data* , wmm_ac_* (BK/BE/VI/VO) /(CW/TXOP/AIFS) etc. but
>> leaving the WMM option on (wmm_enabled=1). This gave around 45 Mbps
>> UDP and 33Mbps TCP.
>
> Hi,
> ?please read through the discussion in this thread "Why is wmm_param
> required for HT40- in mlme.c" in linux wireless mailing list
>
>>
>>
>> So my question is what other WMM influencing factor is activated that
>> is causing the remaining throughput increase from 35 Mbps to 45 Mbps.
>> Also if someone could explain the WMM traffic identifier's (TID)
>> relevance in throughput improvement.
>>
>> Thank you all very much
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
>> the body of a message to [email protected]
>> More majordomo info at ?http://vger.kernel.org/majordomo-info.html
>>
>
On Tue, Mar 8, 2011 at 2:39 AM, M. A. <[email protected]> wrote:
> Dear all,
>
> Just an update to my previous query regarding the relation between WMM
> and 802.11n:
>
> Now from what I understand, WMM (802.11e) is part of the 802.11n
> standard as it uses features (like block-Ack) in the new (MAC layer)
> enhancements such as frame aggregation.
>
> When WMM is activated (via hostapd: wmm_enabled=1) ?as well as frame
> aggregation, I get around 230Mbps UDP/ 170Mbps TCP. When WMM is
> deactivated I get 35 ?Mbps UDP and 27 Mbps TCP.
>
> I tried to identify the causes of this decrease, so I disabled frame
> Aggregation (A-MPDU) and disabled all the WMM associated parameters
> like tx_queue_data* , wmm_ac_* (BK/BE/VI/VO) /(CW/TXOP/AIFS) etc. but
> leaving the WMM option on (wmm_enabled=1). This gave around 45 Mbps
> UDP and 33Mbps TCP.
Hi,
please read through the discussion in this thread "Why is wmm_param
required for HT40- in mlme.c" in linux wireless mailing list
>
>
> So my question is what other WMM influencing factor is activated that
> is causing the remaining throughput increase from 35 Mbps to 45 Mbps.
> Also if someone could explain the WMM traffic identifier's (TID)
> relevance in throughput improvement.
>
> Thank you all very much
> --
> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
> the body of a message to [email protected]
> More majordomo info at ?http://vger.kernel.org/majordomo-info.html
>