Hi, I live in Italy and in the last 2 months I have been able to get the RM551E-GL modem (M2 interface with 2.5G ethernet adapter, dual SIM, USBC) working well by getting to aggregate 4 LTE bands (b1,b3,b7,b20) and 2 5G bands (n38+n78) at the same time getting 1150 mb/s in dl and 130 in ul. In Italy my provider wind3 has introduced CA in 5G between different blocks of N78 and N38. But the RM551E-GL modem does not aggregate the different N78 and N38 blocks. I would expect that in 5G NSA could aggregate N38+N38+N78+N78, but this does not happen … what can it depend on? is there a software patch I can apply to the firmware?
I use the latest firmware available, which is RM551EGL00AAR01A01M8G.
Dear @gpedulla73
RM551EGL00AAR01A01M8G is the latest firmware.
For CA combination, it depends on the ue capability of module and the base station deployment.
Many thank’s Silvia.
The base station can aggregate four carrier in 5G NSA.
So the problem is in the ue equipmente and in my case is RM551E-GL modem.
My RM551E-GL it’s not able to aggregate double n78 and double n38 (N38+N38+N78+N78), but is an X75 based modem with 4CA capability in 5G SA and NSA.
There is some patch to solve this issue?