Multi-Tech Systems GPRS (MTMMC-G) 사용자 설명서
Chapter 13 – Specific AT Commands
Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I)
107
Chapter 13 – Specific AT
Commands
Cell Environment Description +CCED
Description:
This command can be used by the application to retrieve the parameters of the main cell and of up to
six neighboring cells.
six neighboring cells.
There are two possible methods for the external application to determine these cell parameters:
•
On request by the application
•
Automatically by the product every 5 seconds.
Automatic mode is not supported during registration.
Values:
<mode>
0 One shot requested
1 Automatic shots requested
2 Stop automatic shots
1 Automatic shots requested
2 Stop automatic shots
<requested dump>
1 Main Cell:
•
If the Cell Identity is available
MCC, MNC, LAC, CI, BSIC, BCCH Freq (absolute), RxLev, RxLev Full, RxLev Sub, RxQual,
RxQual Full, RxQual Sub,Idle TS
RxQual Full, RxQual Sub,Idle TS
•
If the Cell Identity is not available
MCC, MNC, LAC, BSIC, BCCH Freq (absolute), RxLev, RxLev Full, RxLev Sub, RxQual,
RxQual Full, RxQual Sub,Idle TS
RxQual Full, RxQual Sub,Idle TS
2 Neighbor1 to Neighbor6:
•
If the Cell Identity is available
MCC, MNC, LAC, CI, BSIC, BCCH Freq (absolute), RxLev
•
If the Cell Identity is not available
MCC, MNC, LAC,, BSIC, BCCH Freq (absolute), RxLev
4 Main Cell Timing Advance
8 Main cell RSSI indications (RxLev) in a range from 0 to 31
16 <requested dump>=1 + <requested dump>=2 + <requested dump>=4 + Neighbor1 to
Neighbor6 Timing Advance (only available for mode=0) Neighbor1 to Neighbor6 Timing
Advance are only available in Idle Mode.
Advance are only available in Idle Mode.
<CsqStep> Indicates the step required for RSSI indications between 2 + CSQ unsolicited response.
The range of this step is [1,5]. Default value: 1. If this field is not indicated, the previous value is used.
The range of this step is [1,5]. Default value: 1. If this field is not indicated, the previous value is used.
Notes:
•
The response for the requested dump 1, 2, and 4 will be:
+CCED:<value>, … , <value n>
OK
OK
Where <value> is the ASCII string of the values (in decimal form except the LAC and CI values
which are in hexadecimal form) of the parameters. If a field cannot be measured – or is
meaningless – the parameter is not filled in and two consecutive commas are sent.
which are in hexadecimal form) of the parameters. If a field cannot be measured – or is
meaningless – the parameter is not filled in and two consecutive commas are sent.
•
The response for the requested dump 8 will be a +CSQ response and not a +CCED. The 7.07
format for +CSQ is respected. The <ber> is not evaluated by this command, so the <ber> value
will always be 99.
format for +CSQ is respected. The <ber> is not evaluated by this command, so the <ber> value
will always be 99.
+CSQ:<rssi>, 99
OK
OK
When automatic shots are selected, this +CSQ response is sent every time the <rssi> measured
by the product is equal or greater than the value <CsqStep>. So the <rssi> level between 2
successive +CSQ responses is equal or greater than <CsqStep>. Automatic shots are supported
in idle mode and during communication. The activation or deactivation of this flow (8) does not
affect the other flows.
by the product is equal or greater than the value <CsqStep>. So the <rssi> level between 2
successive +CSQ responses is equal or greater than <CsqStep>. Automatic shots are supported
in idle mode and during communication. The activation or deactivation of this flow (8) does not
affect the other flows.