Good stuff. I would say that one scenario is missed for the E2E issues, when there is a correlation of low TTI utilization and low PRB utilization. This is maybe even more observed scenario when transport/core issue occurs, as it is rather expected that e/gNB will not have enough data in buffer to fully utilize both frequency and time dimensions.
Hi, Thanks for the great video. Just out of curiosity would you please let me know when you will release the second and third videos for throughput analysis via KPI and Wireshark?
LTE_UE_RB_Num_DL This attribute gives the average number of resource blocks the UE was allocated in the downlink over the sampling period. The attribute is calculated only considering the downlink transmission time intervals for which the UE received PDSCH data (TBs with RNTI-Type as C-RNTI) . This is Actix Definition ...High RB Num_DL means that the cell is congested ? or the cell can assign lots of RB due to less traffic? How can we see this?
If the UE is getting high number of RBs then it means there is no congestion. But if the UE is getting fluctuating RB assignments then that can indicate congestion.
There is one of the concern of IBS site 20 Mhz bandwidth L18 sector having low thp at one sector having RB usage around 80-90 fluctuating and DL grant 100 around Is it related to Transmission issue or RRU issue , for low scheduling cause low THP? However other sector having same bandwidth and having good Dl grants around 800 , with good THP
If there are two sectors with the same backhaul and one is working fine then it should not be a backhaul issue. It should be something sector specific like RRU as you mentioned
Great explanation! I have scenario related to what you explained. I have scenario with TDD pattern DDDSU , 100mhz bandwidth(ul/dl bwp 273rbs configured on du) , mcs 27 , sinr 30+ , rsrp is -65 , rbs given to uE is 48 rbs , grants given to uE 1100-1200. I see DL throughput on uE 30mbps and thats very very very low! On CU pdcp log I see it recieves 500mbps from the core (the amount that I pumped from the core is 500mbps) and CU gives DU only 30mbps and thats weird!!! What could be the bottleneck in my case? like du is fine and rf condition is fine and core also gives the CU the required pumped data..but CU gives DU only 30mbps!! A pleasure for your feedback/suggestion
If you have high grant count and low RBs, then it can be congestion. But if you are consistently getting very low RB count and there is no congestion then it can be related to some bwp configuration
@@OurTechPlanet Im getting constantly rbs given to uE 48rbs and grants 1100-1200 grant constantly ; on du configuration bwp in ul/dl configured 273rbs (rf condition is very good sinr 45). But noticed that CU only gives du 30mbps although CU recieved from core 500mbps but gives to du only 30mbps. So any suggestion please about what could be the issue?
Hi , plz I Have a qst if we have very low frame usage in DL so issue in backhaul or transport , but in my case I don't have problm in DL Packet loss ( OSS) , so how can we investiguat ? and there is another Kpi to check by OSS or in DT to confirm this problem (transport issue)? thxs a lot
For 5G Throughput Troubleshooting & Analysis, check out the complete playlist below :)
🌐5G Throughput Troubleshooting
💡ua-cam.com/play/PL4OXTttOk9WicLl6wjKxIyCEc6iDjCFq8.html
Thank you so much for this video and wait for more
More to come! Thanks!
Good stuff. I would say that one scenario is missed for the E2E issues, when there is a correlation of low TTI utilization and low PRB utilization. This is maybe even more observed scenario when transport/core issue occurs, as it is rather expected that e/gNB will not have enough data in buffer to fully utilize both frequency and time dimensions.
Yes that can be a scenario as well. But it should still be triggered in the Scenario-4 explained in the video :)
Great start to the Throughput Troubleshooting trilogy !!!
Thanks! More to come!
Thank you for this analysis .
Welcome!
Very clear explanation. Thanks
You are welcome!
Thank you for these contents Ali, amazing!
Glad you like them! :)
Brilliant explanation! Thanks for sharing your knowledge 👌🏻
You are welcome! :)
Great explain 👍👍
Thanks!
Oh! Nice. Enjoy it 👏👌👏
Thank you 😊
Extremely Picturesque.
Thanks :)
Thank you for sharing
You are welcome! :)
Thank you very much
You are welcome :)
Definitely Awesome ♥♥💕
Thanks a lot :)
Is the kpi analysis and wireshark log analysis videos pending? Thanks a lot for breaking down things and making it simple. Really helps.
Yes, they are planned to be released in this month (May)
Hi, Thanks for the great video. Just out of curiosity would you please let me know when you will release the second and third videos for throughput analysis via KPI and Wireshark?
Yes, we are working on them but might take a month or so :)
hi have you released the second session?
Great explanation. Thanks a lot.
Could you please help with 5G not showing during data testing ?
Usually, it would mean that 5G coverage is not there but detailed investigation of the issue would need drive test and signaling traces
LTE_UE_RB_Num_DL
This attribute gives the average number of resource blocks the UE was allocated in the downlink over the sampling period. The attribute is calculated only considering the downlink transmission time intervals for which the UE received PDSCH data (TBs with RNTI-Type as C-RNTI) .
This is Actix Definition ...High RB Num_DL means that the cell is congested ? or the cell can assign lots of RB due to less traffic? How can we see this?
If the UE is getting high number of RBs then it means there is no congestion. But if the UE is getting fluctuating RB assignments then that can indicate congestion.
There is one of the concern of IBS site 20 Mhz bandwidth L18 sector having low thp at one sector having RB usage around 80-90 fluctuating and DL grant 100 around
Is it related to Transmission issue or RRU issue , for low scheduling cause low THP?
However other sector having same bandwidth and having good Dl grants around 800 , with good THP
If there are two sectors with the same backhaul and one is working fine then it should not be a backhaul issue. It should be something sector specific like RRU as you mentioned
Hi, What is the difference between SSV drive test and SST drive test? SST drive test stands for what?
I think SSV is Single Site Verification and SST is Single Site Testing. Might be same things
Hello, can you pls make Video LTE Analysis to improve Buffering time, and resolution Rate using UE log and pcap file. Thanks
Sure, will work on this as well
I use Actix usually... can you provide exact name of the Frame Usage parameter in Actix
As far as I remember, it was frame usage. You can search for "frame" and see if that gives you any hits.
Great explanation! I have scenario related to what you explained.
I have scenario with TDD pattern DDDSU , 100mhz bandwidth(ul/dl bwp 273rbs configured on du) , mcs 27 , sinr 30+ , rsrp is -65 , rbs given to uE is 48 rbs , grants given to uE 1100-1200.
I see DL throughput on uE 30mbps and thats very very very low!
On CU pdcp log I see it recieves 500mbps from the core (the amount that I pumped from the core is 500mbps) and CU gives DU only 30mbps and thats weird!!!
What could be the bottleneck in my case? like du is fine and rf condition is fine and core also gives the CU the required pumped data..but CU gives DU only 30mbps!!
A pleasure for your feedback/suggestion
If you have high grant count and low RBs, then it can be congestion. But if you are consistently getting very low RB count and there is no congestion then it can be related to some bwp configuration
@@OurTechPlanet
Im getting constantly rbs given to uE 48rbs and grants 1100-1200 grant constantly ; on du configuration bwp in ul/dl configured 273rbs (rf condition is very good sinr 45).
But noticed that CU only gives du 30mbps although CU recieved from core 500mbps but gives to du only 30mbps.
So any suggestion please about what could be the issue?
@@OurTechPlanet what Im confused at is why CU only gives DU 30mbps although CU got 500mbps in its pdcp data
@@go4expert888 I am having same issue. Did you find any solution?
Hi , plz I Have a qst
if we have very low frame usage in DL so issue in backhaul or transport , but in my case I don't have problm in DL Packet loss ( OSS) , so how can we investiguat ? and there is another Kpi to check by OSS or in DT to confirm this problem (transport issue)?
thxs a lot
If you have low frame usage in DL Drive Test and no packet loss, it should still indicate a higher layer issue in most of the cases.
@@OurTechPlanet do you have plz any Idea like what ?
hello when is the the wireshark and KPI video coming. Waiting for a very long time.
Most probably in May.
@@OurTechPlanet thank you sir. I have an interview tomorrow. Your videos are a bible for 5g interviews!
@@ufo2269 That really means a lot :)
Hi where can I get the ppt
Unfortunately, we do not share the ppt at the moment. Thanks for understanding.
Please,Can you give clear explanation about spectrum?
By spectrum, we mean frequency allocation. If you want to know something specific about spectrum, kindly elaborate further on your question :)
@@OurTechPlanet yes ... Frequency allocation