LTE download speed only 20+Mbps

[Henry1014]

Dear LTE expert,

The LTE DL speed only 20+Mbps, UL speed 18Mbps when i using broadband do testing on site. It shouldn't be so low. Is possible affected by interference?Any other idea?
Please advise.
Thank you very much.

[oswe]

how are you testing ? do you have a packet tool like "iperf" ?
try changing the mtu size. see if you get big difference.
check what type of port each element has in the middle (ethernet 100mbps or Gbps)
if bandwidth settings are ok and no interference is present you should consider your tx line. the why to finally probe that is making wireshark at each point and then comparing the delay in messages and the retransmissions.
regards !

[madeira]

We had the same problem in my network.
I found some problemns with MTU configuration on IP Ran (TX) and MTU configurated in eNodeB. In the eNodeb MTU has configurated with 1800 bits and in IP RAN 1730 so the header was cutted. When the values of MTU in IPRAN was changed to 1830 the TP increase 30%.