Changes
Mobile Signal Strength Recommendations (view source)
Revision as of 11:04, 27 July 2020
, 11:04, 27 July 2020→2G (GSM)
Signal strength values are defined by a few different measurements which vary even more for different service modes. These measurements are as follows:
Signal strength values are defined by a few different measurements which vary even more for different service modes. These measurements are as follows:
*[[RSSI]]
*[[RSSI]]
*[[RSRP and RSRQ|RSRP]]
*[[RSRP and RSRQ|RSRP]]
{| class="wikitable"
{| class="wikitable"
|+ style="text-align: left;" | RSSI
|+ style="text-align: left;" |RSSI
! style="width: 200px; background: black; color: white;" | RSSI
! style="width: 200px; background: black; color: white;" |RSSI
! style="width: 200px; background: black; color: white;" | Signal strength
! style="width: 200px; background: black; color: white;" |Signal strength
! style="width: 950px; background: black; color: white;" | Description
! style="width: 950px; background: black; color: white;" |Description
|-
|-
! style="text-align: left; background: #6ACE61;" | >= -70 dBm
! style="text-align: left; background: #6ACE61;" |>= -70 dBm
| style="text-align: left; background: #6ACE61;" | '''Excellent'''
| style="text-align: left; background: #6ACE61;" |'''Excellent'''
| style="text-align: left; background: #6ACE61;" | Strong signal with maximum data speeds
| style="text-align: left; background: #6ACE61;" |Strong signal with maximum data speeds
|-
|-
! style="text-align: left; background: #FBFB43;" | -70 dBm to -85 dBm
! style="text-align: left; background: #FBFB43;" |-70 dBm to -85 dBm
| style="text-align: left; background: #FBFB43;" | '''Good'''
| style="text-align: left; background: #FBFB43;" |'''Good'''
| style="text-align: left; background: #FBFB43;" | Strong signal with good data speeds
| style="text-align: left; background: #FBFB43;" |Strong signal with good data speeds
|-
|-
! style="text-align: left; background: #F7BA30;" | -86 dBm to -100 dBm
! style="text-align: left; background: #F7BA30;" |-86 dBm to -100 dBm
| style="text-align: left; background: #F7BA30;" | '''Fair'''
| style="text-align: left; background: #F7BA30;" |'''Fair'''
| style="text-align: left; background: #F7BA30;" | Fair but useful, fast and reliable data speeds may be attained, but marginal data with drop-outs is possible
| style="text-align: left; background: #F7BA30;" |Fair but useful, fast and reliable data speeds may be attained, but marginal data with drop-outs is possible
|-
|-
! style="text-align: left; background: #EC031D;" | < -100 dBm
! style="text-align: left; background: #EC031D;" |< -100 dBm
| style="text-align: left; background: #EC031D;" | '''Poor'''
| style="text-align: left; background: #EC031D;" |'''Poor'''
| style="text-align: left; background: #EC031D;" | Performance will drop drastically
| style="text-align: left; background: #EC031D;" |Performance will drop drastically
|-
|-
! style="text-align: left; background: #AB0312;" | -110 dBm
! style="text-align: left; background: #AB0312;" |-110 dBm
| style="text-align: left; background: #AB0312;" | '''No signal'''
| style="text-align: left; background: #AB0312;" |'''No signal'''
| style="text-align: left; background: #AB0312;" | Disconnection
| style="text-align: left; background: #AB0312;" |Disconnection
|-
|-
|}
|}
The RSSI standard values for 3G are basically the same as 2G
The RSSI standard values for 3G are basically the same as 2G
{| class="wikitable"
{| class="wikitable"
|+ style="text-align: left;" | RSSI
|+ style="text-align: left;" |RSSI
! style="width: 200px; background: black; color: white;" | RSSI
! style="width: 200px; background: black; color: white;" |RSSI
! style="width: 200px; background: black; color: white;" | Signal strength
! style="width: 200px; background: black; color: white;" |Signal strength
! style="width: 950px; background: black; color: white;" | Description
! style="width: 950px; background: black; color: white;" |Description
|-
|-
! style="text-align: left; background: #6ACE61;" | >= -70 dBm
! style="text-align: left; background: #6ACE61;" |>= -70 dBm
| style="text-align: left; background: #6ACE61;" | '''Excellent'''
| style="text-align: left; background: #6ACE61;" |'''Excellent'''
| style="text-align: left; background: #6ACE61;" | Strong signal with maximum data speeds
| style="text-align: left; background: #6ACE61;" |Strong signal with maximum data speeds
|-
|-
! style="text-align: left; background: #FBFB43;" | -70 dBm to -85 dBm
! style="text-align: left; background: #FBFB43;" |-70 dBm to -85 dBm
| style="text-align: left; background: #FBFB43;" | '''Good'''
| style="text-align: left; background: #FBFB43;" |'''Good'''
| style="text-align: left; background: #FBFB43;" | Strong signal with good data speeds
| style="text-align: left; background: #FBFB43;" |Strong signal with good data speeds
|-
|-
! style="text-align: left; background: #F7BA30;" | -86 dBm to -100 dBm
! style="text-align: left; background: #F7BA30;" |-86 dBm to -100 dBm
| style="text-align: left; background: #F7BA30;" | '''Fair'''
| style="text-align: left; background: #F7BA30;" |'''Fair'''
| style="text-align: left; background: #F7BA30;" | Fair but useful, fast and reliable data speeds may be attained, but marginal data with drop-outs is possible
| style="text-align: left; background: #F7BA30;" |Fair but useful, fast and reliable data speeds may be attained, but marginal data with drop-outs is possible
|-
|-
! style="text-align: left; background: #EC031D;" | < -100 dBm
! style="text-align: left; background: #EC031D;" |< -100 dBm
| style="text-align: left; background: #EC031D;" | '''Poor'''
| style="text-align: left; background: #EC031D;" |'''Poor'''
| style="text-align: left; background: #EC031D;" | Performance will drop drastically
| style="text-align: left; background: #EC031D;" |Performance will drop drastically
|-
|-
! style="text-align: left; background: #AB0312;" | -110 dBm
! style="text-align: left; background: #AB0312;" |-110 dBm
| style="text-align: left; background: #AB0312;" | '''No signal'''
| style="text-align: left; background: #AB0312;" |'''No signal'''
| style="text-align: left; background: #AB0312;" | Disconnection
| style="text-align: left; background: #AB0312;" |Disconnection
|-
|-
|}
|}
{| class="wikitable"
{| class="wikitable"
|+ style="text-align: left;" | EC/IO
|+ style="text-align: left;" |EC/IO
! style="width: 200px; background: black; color: white;" | EC/IO
! style="width: 200px; background: black; color: white;" |EC/IO
! style="width: 200px; background: black; color: white;" | Signal quality
! style="width: 200px; background: black; color: white;" |Signal quality
! style="width: 950px; background: black; color: white;" | Description
! style="width: 950px; background: black; color: white;" |Description
|-
|-
! style="text-align: left; background: #6ACE61;" | 0 to -6
! style="text-align: left; background: #6ACE61;" |0 to -6
| style="text-align: left; background: #6ACE61;" | '''Excellent'''
| style="text-align: left; background: #6ACE61;" |'''Excellent'''
| style="text-align: left; background: #6ACE61;" | Strong signal with maximum data speeds
| style="text-align: left; background: #6ACE61;" |Strong signal with maximum data speeds
|-
|-
! style="text-align: left; background: #FBFB43;" | -7 to -10
! style="text-align: left; background: #FBFB43;" |-7 to -10
| style="text-align: left; background: #FBFB43;" | '''Good'''
| style="text-align: left; background: #FBFB43;" |'''Good'''
| style="text-align: left; background: #FBFB43;" | Strong signal with good data speeds
| style="text-align: left; background: #FBFB43;" |Strong signal with good data speeds
|-
|-
! style="text-align: left; background: #EC031D;" | -11 to -20
! style="text-align: left; background: #EC031D;" |-11 to -20
| style="text-align: left; background: #EC031D;" | '''Fair to poor'''
| style="text-align: left; background: #EC031D;" |'''Fair to poor'''
| style="text-align: left; background: #EC031D;" | Reliable data speeds may be attained, but marginal data with drop-outs is possible. When this value gets close to -20, performance will drop drastically
| style="text-align: left; background: #EC031D;" |Reliable data speeds may be attained, but marginal data with drop-outs is possible. When this value gets close to -20, performance will drop drastically
|-
|-
|}
|}
{| class="wikitable"
{| class="wikitable"
|+ style="text-align: left;" | RSCP
|+ style="text-align: left;" |RSCP
! style="width: 200px; background: black; color: white;" | RSCP
! style="width: 200px; background: black; color: white;" |RSCP
! style="width: 200px; background: black; color: white;" | Signal strength
! style="width: 200px; background: black; color: white;" |Signal strength
! style="width: 950px; background: black; color: white;" | Description
! style="width: 950px; background: black; color: white;" |Description
|-
|-
! style="text-align: left; background: #6ACE61;" | -60 to 0
! style="text-align: left; background: #6ACE61;" |-60 to 0
| style="text-align: left; background: #6ACE61;" | '''Excellent'''
| style="text-align: left; background: #6ACE61;" |'''Excellent'''
| style="text-align: left; background: #6ACE61;" | Strong signal with maximum data speeds
| style="text-align: left; background: #6ACE61;" |Strong signal with maximum data speeds
|-
|-
! style="text-align: left; background: #FBFB43;" | -75 to -60
! style="text-align: left; background: #FBFB43;" |-75 to -60
| style="text-align: left; background: #FBFB43;" | '''Good'''
| style="text-align: left; background: #FBFB43;" |'''Good'''
| style="text-align: left; background: #FBFB43;" | Strong signal with good data speeds
| style="text-align: left; background: #FBFB43;" |Strong signal with good data speeds
|-
|-
! style="text-align: left; background: #F7BA30;" | -85 to -75
! style="text-align: left; background: #F7BA30;" |-85 to -75
| style="text-align: left; background: #F7BA30;" | '''Fair'''
| style="text-align: left; background: #F7BA30;" |'''Fair'''
| style="text-align: left; background: #F7BA30;" | Fair but useful, fast and reliable data speeds may be attained
| style="text-align: left; background: #F7BA30;" |Fair but useful, fast and reliable data speeds may be attained
|-
|-
! style="text-align: left; background: #EC031D;" | -95 to -85
! style="text-align: left; background: #EC031D;" |-95 to -85
| style="text-align: left; background: #EC031D;" | '''Poor'''
| style="text-align: left; background: #EC031D;" |'''Poor'''
| style="text-align: left; background: #EC031D;" | Marginal data with drop-outs is possible
| style="text-align: left; background: #EC031D;" |Marginal data with drop-outs is possible
|-
|-
! style="text-align: left; background: #AB0312;" | -124 to -95
! style="text-align: left; background: #AB0312;" |-124 to -95
| style="text-align: left; background: #AB0312;" | '''Very poor'''
| style="text-align: left; background: #AB0312;" |'''Very poor'''
| style="text-align: left; background: #AB0312;" | Performance will drop drastically, closer to -124 disconnects are likely
| style="text-align: left; background: #AB0312;" |Performance will drop drastically, closer to -124 disconnects are likely
|-
|-
|}
|}
*[[RSRP and RSRQ|RSRP]] - the Reference Signal Received Power is the power of the LTE Reference Signals spread over the full bandwidth and narrowband
*[[RSRP and RSRQ|RSRP]] - the Reference Signal Received Power is the power of the LTE Reference Signals spread over the full bandwidth and narrowband
*[[RSRP and RSRQ|RSRQ]] - Reference Signal Received Quality is a C/I type of measurement and it indicates the quality of the received reference signal (similar to EC/IO)
*[[RSRP and RSRQ|RSRQ]] - Reference Signal Received Quality is a C/I type of measurement and it indicates the quality of the received reference signal (similar to EC/IO)
*[[SINR]] - Signal to Interference plus Noise Ratio (A minimum of -20 dB SINR is needed to detect RSRP/RSRQ). Indicates the throughput capacity of the channel. As the name implies, SINR is the strength of the signal divided by
*[[SINR]] - Signal to Interference plus Noise Ratio (A minimum of -20 dB SINR is needed to detect RSRP/RSRQ). 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
the strength of any interference
{| class="wikitable"
{| class="wikitable"
|+ style="text-align: left;" | RSRP
|+ style="text-align: left;" |RSRP
! style="width: 200px; background: black; color: white;" | RSRP
! style="width: 200px; background: black; color: white;" |RSRP
! style="width: 200px; background: black; color: white;" | Signal strength
! style="width: 200px; background: black; color: white;" |Signal strength
! style="width: 950px; background: black; color: white;" | Description
! style="width: 950px; background: black; color: white;" |Description
|-
|-
! style="text-align: left; background: #6ACE61;" | >= -80 dBm
! style="text-align: left; background: #6ACE61;" |>= -80 dBm
| style="text-align: left; background: #6ACE61;" | '''Excellent'''
| style="text-align: left; background: #6ACE61;" |'''Excellent'''
| style="text-align: left; background: #6ACE61;" | Strong signal with maximum data speeds
| style="text-align: left; background: #6ACE61;" |Strong signal with maximum data speeds
|-
|-
! style="text-align: left; background: #FBFB43;" | -80 dBm to -90 dBm
! style="text-align: left; background: #FBFB43;" |-80 dBm to -90 dBm
| style="text-align: left; background: #FBFB43;" | '''Good'''
| style="text-align: left; background: #FBFB43;" |'''Good'''
| style="text-align: left; background: #FBFB43;" | Strong signal with good data speeds
| style="text-align: left; background: #FBFB43;" |Strong signal with good data speeds
|-
|-
! style="text-align: left; background: #F7BA30;" | -90 dBm to -100 dBm
! style="text-align: left; background: #F7BA30;" |-90 dBm to -100 dBm
| style="text-align: left; background: #F7BA30;" | '''Fair to poor'''
| style="text-align: left; background: #F7BA30;" |'''Fair to poor'''
| style="text-align: left; background: #F7BA30;" | Reliable data speeds may be attained, but marginal data with drop-outs is possible. When this value gets close to -100, performance will drop drastically
| style="text-align: left; background: #F7BA30;" |Reliable data speeds may be attained, but marginal data with drop-outs is possible. When this value gets close to -100, performance will drop drastically
|-
|-
! style="text-align: left; background: #EC031D;" | <= -100 dBm
! style="text-align: left; background: #EC031D;" |<= -100 dBm
| style="text-align: left; background: #EC031D;" | '''No signal'''
| style="text-align: left; background: #EC031D;" |'''No signal'''
| style="text-align: left; background: #EC031D;" | Disnonnection
| style="text-align: left; background: #EC031D;" |Disconnection
|-
|-
|}
|}
{| class="wikitable"
{| class="wikitable"
|+ style="text-align: left;" | RSRQ
|+ style="text-align: left;" |RSRQ
! style="width: 200px; background: black; color: white;" | RSRQ
! style="width: 200px; background: black; color: white;" |RSRQ
! style="width: 200px; background: black; color: white;" | Signal quality
! style="width: 200px; background: black; color: white;" |Signal quality
! style="width: 950px; background: black; color: white;" | Description
! style="width: 950px; background: black; color: white;" |Description
|-
|-
! style="text-align: left; background: #6ACE61;" | >= -10 dB
! style="text-align: left; background: #6ACE61;" |>= -10 dB
| style="text-align: left; background: #6ACE61;" | '''Excellent'''
| style="text-align: left; background: #6ACE61;" |'''Excellent'''
| style="text-align: left; background: #6ACE61;" | Strong signal with maximum data speeds
| style="text-align: left; background: #6ACE61;" |Strong signal with maximum data speeds
|-
|-
! style="text-align: left; background: #FBFB43;" | -10 dB to -15 dB
! style="text-align: left; background: #FBFB43;" |-10 dB to -15 dB
| style="text-align: left; background: #FBFB43;" | '''Good'''
| style="text-align: left; background: #FBFB43;" |'''Good'''
| style="text-align: left; background: #FBFB43;" | Strong signal with good data speeds
| style="text-align: left; background: #FBFB43;" |Strong signal with good data speeds
|-
|-
! style="text-align: left; background: #F7BA30;" | -15 dB to -20 dB
! style="text-align: left; background: #F7BA30;" |-15 dB to -20 dB
| style="text-align: left; background: #F7BA30;" | '''Fair to poor'''
| style="text-align: left; background: #F7BA30;" |'''Fair to poor'''
| style="text-align: left; background: #F7BA30;" | Reliable data speeds may be attained, but marginal data with drop-outs is possible. When this value gets close to -20, performance will drop drastically
| style="text-align: left; background: #F7BA30;" |Reliable data speeds may be attained, but marginal data with drop-outs is possible. When this value gets close to -20, performance will drop drastically
|-
|-
! style="text-align: left; background: #EC031D;" | <= -20 dB
! style="text-align: left; background: #EC031D;" |<= -20 dB
| style="text-align: left; background: #EC031D;" | '''No signal'''
| style="text-align: left; background: #EC031D;" |'''No signal'''
| style="text-align: left; background: #EC031D;" | Disconnection
| style="text-align: left; background: #EC031D;" |Disconnection
|-
|-
|}
|}
{| class="wikitable"
{| class="wikitable"
|+ style="text-align: left;" | SINR
|+ style="text-align: left;" |SINR
! style="width: 200px; background: black; color: white;" | SINR
! style="width: 200px; background: black; color: white;" |SINR
! style="width: 200px; background: black; color: white;" | Signal strength
! style="width: 200px; background: black; color: white;" |Signal strength
! style="width: 950px; background: black; color: white;" | Description
! style="width: 950px; background: black; color: white;" |Description
|-
|-
! style="text-align: left; background: #6ACE61;" | >= 20 dB
! style="text-align: left; background: #6ACE61;" |>= 20 dB
| style="text-align: left; background: #6ACE61;" | '''Excellent'''
| style="text-align: left; background: #6ACE61;" |'''Excellent'''
| style="text-align: left; background: #6ACE61;" | Strong signal with maximum data speeds
| style="text-align: left; background: #6ACE61;" |Strong signal with maximum data speeds
|-
|-
! style="text-align: left; background: #FBFB43;" | 13 dB to 20 dB
! style="text-align: left; background: #FBFB43;" |13 dB to 20 dB
| style="text-align: left; background: #FBFB43;" | '''Good'''
| style="text-align: left; background: #FBFB43;" |'''Good'''
| style="text-align: left; background: #FBFB43;" | Strong signal with good data speeds
| style="text-align: left; background: #FBFB43;" |Strong signal with good data speeds
|-
|-
! style="text-align: left; background: #F7BA30;" | 0 dB to 13 dB
! style="text-align: left; background: #F7BA30;" |0 dB to 13 dB
| style="text-align: left; background: #F7BA30;" | '''Fair to poor'''
| style="text-align: left; background: #F7BA30;" |'''Fair to poor'''
| style="text-align: left; background: #F7BA30;" | Reliable data speeds may be attained, but marginal data with drop-outs is possible. When this value gets close to 0, performance will drop drastically
| style="text-align: left; background: #F7BA30;" |Reliable data speeds may be attained, but marginal data with drop-outs is possible. When this value gets close to 0, performance will drop drastically
|-
|-
! style="text-align: left; background: #EC031D;" | <= 0 dB
! style="text-align: left; background: #EC031D;" |<= 0 dB
| style="text-align: left; background: #EC031D;" | '''No signal'''
| style="text-align: left; background: #EC031D;" |'''No signal'''
| style="text-align: left; background: #EC031D;" | Disconnection
| style="text-align: left; background: #EC031D;" |Disconnection
|-
|-
|}
|}
'''RSRQ = -16 dB'''
'''RSRQ = -16 dB'''
'''SNR = -1.8 dB'''
'''SINR = -1.8 dB'''
In this case, the signal quality is actually very poor. This could be due to the device being some distance away from the LTE transmitter. It’s also possible that something is interfering with the signal, such as a building or other obstructions between the device and the tower.
In this case, the signal quality is actually very poor. This could be due to the device being some distance away from the LTE transmitter. It’s also possible that something is interfering with the signal, such as a building or other obstructions between the device and the tower.
{| class="wikitable"
{| class="wikitable"
|+ style="text-align: left;" | RSSI
|+ style="text-align: left;" |RSSI
! style="width: 200px; background: black; color: white;" | RSSI
! style="width: 200px; background: black; color: white;" |RSSI
! style="width: 200px; background: black; color: white;" | Signal strength
! style="width: 200px; background: black; color: white;" |Signal strength
! style="width: 950px; background: black; color: white;" | Description
! style="width: 950px; background: black; color: white;" |Description
|-
|-
! style="text-align: left; background: #6ACE61;" | > -65 dBm
! style="text-align: left; background: #6ACE61;" |> -65 dBm
| style="text-align: left; background: #6ACE61;" | '''Excellent'''
| style="text-align: left; background: #6ACE61;" |'''Excellent'''
| style="text-align: left; background: #6ACE61;" | Strong signal with maximum data speeds
| style="text-align: left; background: #6ACE61;" |Strong signal with maximum data speeds
|-
|-
! style="text-align: left; background: #FBFB43;" | -65 dBm to -75 dBm
! style="text-align: left; background: #FBFB43;" |-65 dBm to -75 dBm
| style="text-align: left; background: #FBFB43;" | '''Good'''
| style="text-align: left; background: #FBFB43;" |'''Good'''
| style="text-align: left; background: #FBFB43;" | Strong signal with good data speeds
| style="text-align: left; background: #FBFB43;" |Strong signal with good data speeds
|-
|-
! style="text-align: left; background: #F7BA30;" | -75 dBm to -85 dBm
! style="text-align: left; background: #F7BA30;" |-75 dBm to -85 dBm
| style="text-align: left; background: #F7BA30;" | '''Fair'''
| style="text-align: left; background: #F7BA30;" |'''Fair'''
| style="text-align: left; background: #F7BA30;" | Fair but useful, fast and reliable data speeds may be attained, but marginal data with drop-outs is possible
| style="text-align: left; background: #F7BA30;" |Fair but useful, fast and reliable data speeds may be attained, but marginal data with drop-outs is possible
|-
|-
! style="text-align: left; background: #EC031D;" | -85 dBm to -95 dBm
! style="text-align: left; background: #EC031D;" |-85 dBm to -95 dBm
| style="text-align: left; background: #EC031D;" | '''Poor'''
| style="text-align: left; background: #EC031D;" |'''Poor'''
| style="text-align: left; background: #EC031D;" | Performance will drop drastically
| style="text-align: left; background: #EC031D;" |Performance will drop drastically
|-
|-
! style="text-align: left; background: #AB0312;" | <= -95 dBm
! style="text-align: left; background: #AB0312;" |<= -95 dBm
| style="text-align: left; background: #AB0312;" | '''No signal'''
| style="text-align: left; background: #AB0312;" |'''No signal'''
| style="text-align: left; background: #AB0312;" | Disconnection
| style="text-align: left; background: #AB0312;" |Disconnection
|-
|-
|}
|}
'''''gsmctl''''' commands concerning signal quality:
'''''gsmctl''''' commands concerning signal quality:
*'''''gsmctl -q''''' - returns the current '''RSSI''' value (available with all services modes)
*'''''gsmctl -q''''' - returns the current '''RSSI''' value (available with all services modes)
*'''''gsmctl -W''''' - returns the current '''RSRP''' value (only with 4G)
*'''''gsmctl -W''''' - returns the current '''RSRP''' value (only with 4G)
[[File:Putty gsmctl example.PNG]]
[[File:Putty gsmctl example.PNG]]
[[Category:Networking]]
