-32763.0 dBm

[Bjørn Mork]

Bjørn Mork <bjorn at mork.no> writes:

> Just noticed something looking a bit odd while being connected to a UMTS
> network:
>
> [27 Sep 2012, 11:13:05] [Debug] [/dev/cdc-wdm0] Received message...
>>>>>>> QMUX:
>>>>>>>   length  = 25
>>>>>>>   flags   = 0x80
>>>>>>>   service = "nas"
>>>>>>>   client  = 3
>>>>>>> QMI:
>>>>>>>   flags       = "response"
>>>>>>>   transaction = 1
>>>>>>>   tlv_length  = 13
>>>>>>>   message     = "Get Signal Info" (0x004F)
>>>>>>> TLV:
>>>>>>>   type       = "Result" (0x02)
>>>>>>>   length     = 4
>>>>>>>   value      = 00:00:00:00
>>>>>>>   translated = SUCCESS
>>>>>>> TLV:
>>>>>>>   type       = "WCDMA Signal Strength" (0x13)
>>>>>>>   length     = 3
>>>>>>>   value      = B5:F6:FF
>>>>>>>   translated = [ rssi = '-75' ecio = '65526' ]
>
> [27 Sep 2012, 11:13:05] [Debug] KEY: 01:00:03:03:00:00:00:00
> [27 Sep 2012, 11:13:05] [Debug]   Service: 03
> [27 Sep 2012, 11:13:05] [Debug]   Client ID: 03
> [27 Sep 2012, 11:13:05] [Debug]   Transaction ID: 01:00
> [/dev/cdc-wdm0] Successfully got signal info
> WCDMA:
>         RSSI: '-75 dBm'
>         ECIO: '-32763.0 dBm'
> [27 Sep 2012, 11:13:05] [Debug] [/dev/cdc-wdm0] Unregistered 'nas' client with ID '3'
>
>
>
> I have no idea what ECIO is, but -32763 dBm is so little that it doesn't
> seem worth mentioning at all :-)

More info:  The "Get Signal Strength" command reports a much more likely
value for ECIO, whatever that is:

[27 Sep 2012, 11:17:36] [Debug] [/dev/cdc-wdm0] Received message...
>>>>>> QMUX:
>>>>>>   length  = 49
>>>>>>   flags   = 0x80
>>>>>>   service = "nas"
>>>>>>   client  = 6
>>>>>> QMI:
>>>>>>   flags       = "response"
>>>>>>   transaction = 1
>>>>>>   tlv_length  = 37
>>>>>>   message     = "Get Signal Strength" (0x0020)
>>>>>> TLV:
>>>>>>   type       = "Result" (0x02)
>>>>>>   length     = 4
>>>>>>   value      = 00:00:00:00
>>>>>>   translated = SUCCESS
>>>>>> TLV:
>>>>>>   type       = "Signal Strength" (0x01)
>>>>>>   length     = 2
>>>>>>   value      = A8:05
>>>>>>   translated = [ strength = '-88' radio_interface = '5' ]
>>>>>> TLV:
>>>>>>   type       = "RSSI List" (0x11)
>>>>>>   length     = 4
>>>>>>   value      = 01:00:58:05
>>>>>>   translated = { [0] = '[ rssi = '88' radio_interface = '5' ] '}
>>>>>> TLV:
>>>>>>   type       = "ECIO List" (0x12)
>>>>>>   length     = 4
>>>>>>   value      = 01:00:FC:05
>>>>>>   translated = { [0] = '[ ecio = '252' radio_interface = '5' ] '}
>>>>>> TLV:
>>>>>>   type       = "IO" (0x13)
>>>>>>   length     = 4
>>>>>>   value      = 96:FF:FF:FF
>>>>>>   translated = -106
>>>>>> TLV:
>>>>>>   type       = "SINR" (0x14)
>>>>>>   length     = 1
>>>>>>   value      = 08
>>>>>>   translated = 8

[27 Sep 2012, 11:17:36] [Debug] KEY: 01:00:06:03:00:00:00:00
[27 Sep 2012, 11:17:36] [Debug]   Service: 03
[27 Sep 2012, 11:17:36] [Debug]   Client ID: 06
[27 Sep 2012, 11:17:36] [Debug]   Transaction ID: 01:00
[/dev/cdc-wdm0] Successfully got signal strength
Current:
        Network 'umts': '-88 dBm'
RSSI:
        Network 'umts': '-88 dBm'
ECIO:
        Network 'umts': '-126.0 dBm'
IO:
        Network 'cdma-1xevdo': '-106 dBm'
SINR:
        Network 'cdma-1xevdo': (8) '9.0 dB'
[27 Sep 2012, 11:17:36] [Debug] [/dev/cdc-wdm0] Unregistered 'nas' client with ID '6'



But this has another problem: The 'cdma-1xevdo' network is very unlikely
in my area...  The IO and SINR readings look fine, but the network is
umts


Bjørn