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Re: [Discuss-gnuradio] gr-ieee 802.11 and commercial AP (late ACK packet
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From: |
Bastian Bloessl |
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Subject: |
Re: [Discuss-gnuradio] gr-ieee 802.11 and commercial AP (late ACK packets) |
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Date: |
Wed, 29 Mar 2017 22:19:08 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 |
Hi,
On 03/29/2017 01:11 PM, sumitstop wrote:
> Hi,
>
> With gr-ieee 802.11, I know that SIFS cannot be respected becz of USB delays
> (B210), but what we can also try is that : sending ACK packet before all the
> layer-2 retries are exhausted ! Instead of sending ACK withing 10 microsecs.
>
> In this way, the throughput will be down for sure but the device can
> communicate with a commercial 802.11 AP.
>
> I was wondering if anyone tried like this and I can get some heads up.
>
It's not only about sending fast enough, but mainly about sending at the
right point in time (i.e. immediately after a frame). Since the SDR
doesn't do channel sensing on the FPGA, this is at least not
straightforward.
Best,
Bastian