Using GPRS

[Jacob Erlbeck]

Hi Csaba,

On 13.08.2015 12:44, Sipos Csaba wrote:
> What algorithm (PCU) would you prefer if the goal is to maximize the single UE throughput?

UL is one PDCH in general with either algorithm.

For DL: Algo B (multislot) if you have >1 PDCH. In branch
jerlbeck/master (which will be merged to master soon) you can also use
'alloc-algorithm dynamic' which will provide a higher DL throughput if
there are only a few connections and will move over to algo A on higher
usage.

Regards

Jacob
> 
> ----- Eredeti üzenet -----
> Feladó: "Jacob Erlbeck" <jerlbeck at sysmocom.de>
> Címzett: "Sipos Csaba" <sipos.csaba at kvk.uni-obuda.hu>
> Másolatot kap: "OpenBSC Mailing List" <openbsc at lists.osmocom.org>
> Elküldött üzenetek: Csütörtök, 2015. Augusztus 13. 12:20:01
> Tárgy: Re: Using GPRS
> 
> Hi
> 
> On 26.07.2015 20:02, Sipos Csaba wrote:
>> I will try to give you as many feedback as possible. :-)
>>
>> I finally have a more or less working setup. At least there is no crash whatsoever, and the PS domain is working, the UE can attach, activate PDP, transfer data to some extent.
>>
>> For example when i tried to ping the TUN interface, I got 2500-2600ms latency.
> 
> That's normal in the default case, since the MS will have to issue a
> RACH to get an uplink TBF for the response. You can allow to keep the
> PACCH open for a longer time by configuring
> 
>   pcu
>     dl-tbf-idle-time 2000
> 
> This keeps the DL TBF open for the time given (in ms) by periodically
> sending LLC dummy commands.
> 
> HTH
> 
> Jacob
> 
> 
> 
> 


-- 
- Jacob Erlbeck <jerlbeck at sysmocom.de>       http://www.sysmocom.de/
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