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LTE Site having very low Uplink Throughput


#1

Tg Abhijeet Sinhaabhijeet (India):
Hi All,
Site having very less UL Thpt issue (-1Mbps , 5 MHz BW)
Checklist done:

  1. No uplink interference.
  2. No TNL fault/packet loss
  3. No Alarm
  4. Very less max active user
  5. No cell overshooting
  6. Cell & user thpt both very less.
    Plz suggest
    (PDCCH UL grant values also very less value in DT logs)

Tg Syed (Ivory Coast):
What is the frame configuration?

Tg Abhijeet Sinhaabhijeet (India):
Sorry can you explain little bit more about it
From where to get it?
It’s FDD

Tg Ahmed Nabawy (Egypt):
Check smart preallocation is it open or not?
Check UL synch users is it high or not

Tg Syed (Ivory Coast):
Sub frame configuration - it’s in cell if you are using Huawei check it it’s normally sa0 and sa7 for TDD check if it’s OK

Tg Ahmed Nabawy (Egypt):
If closed loop mimo is activated with DL FSS , close FSS (Frequency Selective schedule)

Tg Syed (Ivory Coast):
In FDD normally we use ol adaptive with tm3
What’s the HARQ and BLER?

Tg Abhijeet Sinhaabhijeet (India):
Yes, it’s adaptive mode
BLER was ok

Tg Syed (Ivory Coast):
And HARQ?
How did you say BLER was OK what’s the value?
Also the buffer status?

Tg Abhijeet Sinhaabhijeet (India):
BLER was OK by Drive plot

Tg Ahmed Nabawy (Egypt):
FSS is Frequency selective scheduling.
You can find it in cellalgoswithch

Tg Abhijeet Sinhaabhijeet (India):
Ok thanks for it…Will confirm

Tg Syed (Ivory Coast):
About the BLER, check it in the BLER window if it’s high? In cell configuration data you check it
Means dump

Tg Abhijeet Sinhaabhijeet (India):
Ok thanks , I have NE dump for this site , will confirm


#2

I also met such issue.