[srslte-users] Throughput tests

[dmakris at iit.demokritos.gr]

Hi Ismael,

thank you for your immediate response.
I tune the Tx and Rx gains to 88 and 45 dB respectively, so the snr from
trace monitoring is about 27 dB.
I run the tests using speedtest from Okla, and i measure the DL between 12
and 20 Mbps. The UL is about 25 Mbps.
Then i run an iperf UDP test. When i try to download, the DL is about 10
Mbps and the snr goes to -nan.

Best Regards,
Dimitris


> Are you using TCP or UDP? TCP performance with srsENB is not quite good at
> the moment. Try UDP first.
>
> Also tune the TX and RX gains so that you have high SNR (~27-30 dB) in
> both
> directions.
>
> On Tue, 13 Feb 2018 at 10:17 <dmakris at iit.demokritos.gr> wrote:
>
>> Hi srsLTE community,
>>
>>  in our testbed, we use the latest srsLTE software (Latest commit
>> 2734ce6)
>> running on an Intel Core i7-7700K CPU (8x4.2 GHz), with 16 Gbyte RAM.
>> The
>> OS is Ubuntu 16.04. For the RF front end we use the Ettus B210 in SISO
>> Mode.
>>  For 1.4, 3, 5 and 10 MHz Bandwidth, we achieve the expected throughput.
>> But for 15 and 20 MHz, the DL varies between 12 and 20 Mbps. The UL is
>> about 25 Mbps.
>>
>>  Should we change another parameter from drb, rr, or sib configuration
>> files?
>> Thank you for your help.
>>
>> Thank you in advance,
>> Dimitris
>>
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>