EM9191 Poor Performance, High Jitter (800ms) - Anyone else having issues?

[mwax321]

Hi all. A bit new to the forum. Bought kit from Wireless Haven.

I seem to be having absolutely abysmal performance. My Pepwave Max Transit 18 has consistent, reliable connection with the same sim card. Using same antenna configuration.

With my new Wg3526 + Em9191 on usb, I'm getting jitter up to 800ms. GoldenOrb_2022-03-24 ( OpenWrt 21.02-SNAPSHOT )

I've tried connecting the modem directly to laptop via USB to rule out router/wifi. Tried additional 12v power. Anyone experienced similar issues? Anything I can do to fix this?


Bands (em9191):
B66 (Bandwidth 20 MHz)
n71 (Bandwidth 5 MHz)
B71 (CA, Bandwidth 5 MHz)

Bands (pepwave max transit 18):
b66
b71

em9191 debug:

Code: Select all

P: Vendor=1199 ProdID=90d3 Rev= 0.06	
S: Manufacturer=Sierra Wireless, Incorporated	
S: Product=EM9191

Code: Select all

!GSTATUS: 
Current Time:  8646		Temperature: 48
Modem Mitigate Level: 0		ModemProc Mitigate Level: 0	
Reset Counter: 7		Mode:        ONLINE         
System mode:   LTE        	PS state:    Attached     
LTE band:      B66    		LTE bw:      20 MHz  
LTE Rx chan:   66786		LTE Tx chan: 132322
LTE SSC1 state:INACTIVE    	LTE SSC1 band: B2     
LTE SSC1 bw  : 10 MHz  		LTE SSC1 chan: 700
LTE SSC2 state:ACTIVE      	LTE SSC2 band: B71    
LTE SSC2 bw  : 5 MHz   		LTE SSC2 chan: 0
EMM state:     Registered     	Normal Service 
RRC state:     RRC Connected  
IMS reg state: UNKNOWN         	IMS mode:    Not Support  
IMS Srv State: UNKNOWN SMS,UNKNOWN VoIP
PCC RxM RSSI:  -60		PCC RxM RSRP:  -94
PCC RxD RSSI:  -56		PCC RxD RSRP:  -91
PCC RxM1 RSSI:  -61		PCC RxM1 RSRP:  -94
PCC RxD1 RSSI:  -57		PCC RxD1 RSRP:  -92
SCC1 RxM RSSI: -73		SCC1 RxM RSRP: -96
SCC1 RxD RSSI: -69		SCC1 RxD RSRP: -92
SCC1 RxM1 RSSI:  --- 		SCC1 RxM1 RSRP:  --- 
SCC1 RxD1 RSSI:  --- 		SCC1 RxD1 RSRP:  --- 
SCC2 RxM RSSI: -50		SCC2 RxM RSRP: -80
SCC2 RxD RSSI: -52		SCC2 RxD RSRP: -82
Tx Power:      15		TAC:         793c (31036)
RSRQ (dB):     -14.2		Cell ID:     011b3302 (18559746)
SINR (dB):     10.6
NR5G band:       ---		NR5G bw:         ---		
NR5G Rx chan:    ---		NR5G Tx chan:    ---		
NR5G RSRP (dBm): ---		NR5G RSRQ (dB):  ---		
NR5G SINR (dB):  ---		
OK

Code: Select all

AT!PCTEMP?
Temp state: Normal
Temperature: 54.00 degC
OK

Code: Select all

C:* #Ifs= 5 Cfg#= 1 Atr=a0 MxPwr=896mA	
A: FirstIf#= 0 IfCount= 2 Cls=02(comm.) Sub=0e Prot=00	
I:* If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=0e Prot=00 Driver=cdc_mbim	
E: Ad=81(I) Atr=03(Int.) MxPS= 64 Ivl=32ms	
I: If#= 1 Alt= 0 #EPs= 0 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim	
I:* If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim	
E: Ad=8e(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms	
E: Ad=0f(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms	
I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=qcserial	
E: Ad=83(I) Atr=03(Int.) MxPS= 10 Ivl=32ms	
E: Ad=82(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms	
E: Ad=01(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms	
I:* If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=(none)	
E: Ad=84(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms	
E: Ad=02(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms	
I:* If#= 5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=42 Prot=01 Driver=(none)	
E: Ad=03(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms	
E: Ad=85(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms

[Esoteric]

Did you ever find info on this? I'm running up against poor performance aswell with the same setup.