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The measurements are as follows:
The measurements are as follows:
* RSSI
* '''RSSI''' - Received Signal Strength Indicator. RSSI is a negative value, and the closer to 0, the stronger the signal
* RSRP
* '''RSRP''' - the Reference Signal Received Power is the power of the LTE Reference Signals spread over the full bandwidth and narrowband
* SINR
* '''SINR''' - Signal to Interference plus Noise Ratio. Indicates the throughput capacity of the channel. As the name implies, SINR is the strength of the signal divided by the strength of any interference
More on these measurements in separate service mode sections.
More on these measurements in separate service mode sections.
== Determining Factors of Signal Values ==
== Determining Factors of Signal Signal Strength and Quality ==
Many different factors influence signal strength and quality, including but not limited to:
Many different factors influence signal strength and quality, including but not limited to:
== 2G (GSM) ==
== 2G (GSM) ==
2G (GSM) Signal strength is defined by only one value: '''RSSI''' – Received Signal Strength Indicator; RSSI is a negative value, and the closer to 0, the stronger the signal.
2G (GSM) Signal strength is defined by only one value: '''RSSI'''
'''RSSI -''' Received Signal Strength Indicator. RSSI is a negative value, and the closer to 0, the stronger the signal
'''RSSI'''
[[File:2G RSSI.png|left|frameless|1154x1154px]]
[[File:2G RSSI.png|left|frameless|1154x1154px]]
To check the 2G signal strength value of your Teltonika Telematics device, go to configurator → I/O tab → check GSM Signal value:
To check the 2G signal strength value of your Teltonika Telematics device, go to configurator → I/O tab → check GSM Signal value:
[[File:Checking RSSI.png|center|frameless|1124x1124px]]In this element you will find that GSM signal has values from 0 to 5 and correlation to RSSI will be as shown:
[[File:Checking RSSI.png|center|frameless|1124x1124px]]In this element you will find that GSM signal has values from 0 to 5 and correlation to RSSI will be as shown:
{| class="wikitable"
{|
!GSM SIGNAL
!GSM SIGNAL
!RSSI
!RSSI
|>=-73
|>=-73
|}
|}
'''''NOTE:'' "GSM Signal"''' element is used only to determine <u>'''2G'''</u> network connection quality.
== 4G (LTE) ==
== 4G (LTE) ==
When checking LTE/4G signal strength, we should be looking at SINR and RSRP values.
When checking LTE/4G signal strength, we should be looking at SINR and RSRP values.
'''SINR -''' Signal to Interference plus Noise Ratio. Indicates the throughput capacity of the channel. As the name implies, SINR is the strength of the signal divided by the strength of any interference
'''SINR'''
[[File:SINR.png|frameless|1151x1151px]]'''RSRP -''' the Reference Signal Received Power is the power of the LTE Reference Signals spread over the full bandwidth and narrowband
[[File:SINR.png|frameless|1151x1151px]]'''RSRP'''
[[File:RSRP.png|frameless|1153x1153px]]
[[File:RSRP.png|frameless|1153x1153px]]
