FWA710 does not seem to ever use 4x4 mimo

Jann

So this is the currently fastest connection, but it is only 1200mbit/s and that confuses me.

CQI is always 0

PMI is always 0

RI is 2, sometimes 3

MCS apparently is 1 usually, but switches to 4 during downloads.

There are also 20 MHz of b1 at this location, but allowing the FWA710 to use it is actually slower for whatever reason.

Where can i see if it uses four streams on n78? And why is MCS so low?

Service Information

BandLTE_BC3(LTE FDD 1800+)RSSI-76Cell ID28203776Physical Cell ID244UL Bandwidth (MHz)20MDL Bandwidth (MHz)20MRFCN1300RSRP-84RSRQ-8SINR17RSCPN/AEcNoN/ACQI0PMI0RI2MCS1

NR-NSA Information

• Band
• N78(TDD 3500)
• Physical Cell ID
• 921
• UL Bandwidth (MHz)
• 90M
• DL Bandwidth (MHz)
• 90M
• RFCN
• 641760
• RSSI
• -76
• RSRP
• -76
• RSRQ
• 0
• SINR
• 24

SCC Information

# 1

• Band
• LTE_BC3(LTE FDD 1800+)
• Physical Cell ID
• 437
• UL Bandwidth (MHz)
• 10M
• DL Bandwidth (MHz)
• 10M
• RFCN
• 1444
• RSSI
• -72
• RSRP
• -83
• RSRQ
• -8
• SINR
• 19
• EcNo
• 0
• CQI
• 0
• PMI
• 0
• RI
• 0
• MCS
• 0

# 2

• Band
• LTE_BC8(LTE FDD 900)
• Physical Cell ID
• 146
• UL Bandwidth (MHz)
• N/A
• DL Bandwidth (MHz)
• 10M
• RFCN
• 3749
• RSSI
• -52
• RSRP
• -66
• RSRQ
• -11
• SINR
• 19
• EcNo
• 0
• CQI
• 0
• PMI
• 0
• RI
• 0
• MCS
• 0

Zyxel_Tina

Hi @Jann,

According to our official datasheet, the FWA710 supports DL 4x4 MIMO, featuring four built-in high-gain 4G/5G antennas with up to 9 dBi per element. However, establishing a 4x4 MIMO link also depends on the capabilities of the serving cell site and the radio environment at your location. As we have checked from your IP, your device is in a rural area where its performance may be limited by these factors.

Based on the signal metrics and behavior you observed, it appears the serving base station is currently not providing 4x4 MIMO capability to your router. This could be due to cell-site configuration, load conditions, or local coverage limitations.

Since the FWA710 uses a directional antenna, we also recommend adjusting the angle of the device to ensure that the antenna is facing toward the base station. Even at the same location, antenna alignment can affect signal quality and MIMO link performance.

To further isolate the issue, we kindly recommend:

1. Checking with your mobile operator to confirm whether 4x4 MIMO is supported on the specific cell/site your device is currently connected to.
2. (If possible) Testing the router in an area known to support 4x4 MIMO, to verify whether the device can establish a 4x4 MIMO link under suitable network conditions.