[srsran-users] Information about the RF status

[Robert Falkenberg]

Hi Apichart,

/overflows/ and /underruns/ happen when the application (e.g. srsUE, 
srsENB) does not /pick-up/ or /provide/ radio samples, before the 
internal buffers of the RF frontend /overflow/ or /run empty/, respectively.

While insufficient CPU performance is a frequent reason for this to 
happen, there are also other things which may cause overflow and 
underruns, e.g. CPU frequency scaling (powersafe mode), or other 
heavy-duty tasks (browser) running on the same machine.
Please also have a look into
https://docs.srsran.com/en/latest/usermanuals/source/srsenb/source/3_enb_trouble.html?highlight=scaling#computational-power

Best regards,
Robert


On 29.08.22 05:46, Cagalli Athha wrote:
> Hi
> I try to find information about RF status. I saw one in this mailing 
> list state that
>
> "
> >//>/For Example i get: />/RF status: O=0, U=0, L=1 />/or />/RF status: O=0, U=0, L=2 /
> It stands for:
> - O: Overflow
> - U: Underrun
> - L: Late
> "
> and there is information about Late that the cpu is not powerful 
> enough to keep up with the data rate. How about Overflow and Underrun? 
> What are possible causes of overflow and underrun? I got Overflow once 
> in a while.
>
> Thank you,
> Apichart
>
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> srsran-users at lists.srsran.com
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-- 


      RobertFalkenberg

Senior Engineer

Software Radio Systems

	

	
	

	

	robert at srs.io <mailto:robert at srs.io>

	www.srs.io <//www.srs.io>

	Dortmund, Germany




	
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