Will upgrading the hardware really improve anything?

[tankred]

Net has been running fine for 3 years ... all in all, I'm happy.
I'm just wondering if there is a chance for QAM256 under such conditions?
Theoretically, on 1800 (10MHz) and 2100 (15MHz) I have a max of 187,5 Mbit in MIMO 2x2 QAM64 (B535).
After upgrading the hardware to aggregate 3 bands (800(10MHz)+1800+2100) + QAM256 theoretically: 350 Mbit.
If I add DL on 2100 to the real results at 1800+800 and everything + 30% (QAM256) it should be 50% better than it is... (160 Mbit).
Calmly wait for the router to fail in an unheated attic, or change something earlier? What do you think about it ?
Regards!

Test at 15:10, soft snow.
ROUTER: Huawei B535
wifi: Frequency:5.18 GHz Bit Rate=780 Mb/s Tx-Power=22 dBm Link Quality=50/70 Signal level=-60 dBm
network card: intel ax200, ubuntu 22.04lts
Antenna: Cybertech LTE/4G 15dBi 1800-2100MHz. 6m cables.
BTS: Orange (26003) ID: 3453 (N!), Jasionka - gm. Zgierz, http://beta.btsearch.pl/bts/details/21010/
Distance: 1,7 km. View of the bts - 220 m of the forest, 80 m of the field, 80 m of the forest ... fields and you can already see the bts. The antenna looks at the sparse forest right next to the house.
SIM Orange, spedtest Orange: https://speedtest.orange.pl/

800:
rsrq=-13.0 rsrp=-107 rssi=-77 sinr=7
band=20ulbandwidth=10MHz LTEBand=80000
Download: 17.53 Mb/s Upload: 3.97 Mb/s
Ping: 18ms Jitter: 6ms

1800:
rsrq=-9.0 rsrp=-97 rssi=-71 sinr=13
band=3ulbandwidth=10MHz LTEBand=4
Download: 37.69 Mb/s Upload: 18.90 Mb/s
Ping: 16ms Jitter: 6ms

2100:
rsrq=-9.0 rsrp=-92 rssi=-61 sinr=21
band=1ulbandwidth=15MHz LTEBand=1
Download: 82.03 Mb/s Upload: 31.08 Mb/s
Ping:16ms Jitter: 6ms

2100 + 1800:
rsrq=-6.0 rsrp=-91 rssi=-65 sinr=20
band=1ulbandwidth=15MHz LTEBand=5
Download: 107.60 Mb/s Upload: 29.68 Mb/s
Ping: 15ms Jitter 6ms

[Mig25]

QAM256 is only from a really close distance, already at 500m with full visibility it is difficult.

[mothers451]

The SINR parameter on LTE2100 and you allows you to switch on QAM256 modulation, with LTE1800 it is similar, in LTE2100+1800 aggregation, higher modulation allows for an increase in DL and on UL on the baseband to use QAM64 and also higher speeds.

[tankred]

Thank you
I dug up for tests with the router (B535) on the roof (3 years ago), on built-in antennas:
BAND/rssi/rsrq/rsrp/sinr
2100 -71 -7 -95 19
2100 -69 -10 -96 17
1800 -65 -10 -91 16
1800 -69 -12 -97 10
800 -63 -8 -89 5
800 -63 -10 -90 2
Maybe a router with MIMO 4x4 in a hermetic box with built-in antennas will be an idea? E.g. B818? Any other idea?
Should be 2x faster even if it doesn't catch QAM256 ? Will this BTS handle it?
Regards.

[tankred]

I went for a walk around 13/14.
On a phone with lte cat 16 in the best place (about 600-700 m from BTS, visibility, a lot of field in front of me):
DL 198MB/s UP 0,08MB/s Ping 27ms Jitter 10ms.
150 m from the mast:
DL 140 UP 0,08 Ping 31 Jitter 10ms
At home after a walk: (B535).
DL 60-80MB/s, UP 24MB/s Ping 15ms Jitter 6ms
I went on the roof. On the chimney, in place of the antenna, the phone achieves the same as a modem with an antenna.. 60-80 DL.
It seems that the modem in the can does nothing ...
Modem + antenna in relation to the modem in the place of the antenna gives (tests 3 years ago):
RSSI/ RSRQ/ RSRP/SINR
800: -18/+2/-15,5/-0,5
1800: +3 /-2,5/ +3,5/ +3,5
2100: +9 /+0,0/ +7,5 /+7
hm ...