...
On devices using R11e-LTE International version card (wAP LTE kit) some extra information is provided under info command (from 6.41rc61)
| Code Block | ||
|---|---|---|
| ||
current-operator: 24701
lac: 40
current-cellid: 2514442 |
...
| Property | Description |
|---|---|
| current-operator (integer; Default: ) | Contains MCC and MNC. For example: current-operator: 24701 breaks to: MCC=247 MNC=01 |
| lac (integer; Default: ) | location area code (LAC) |
| current-cellid (integer; Default: ) | Station identification number |
...
It is possible to lock R11e-LTE, R11e-LTE6 and R11e-4G modems and equipped devices to exact LTE tower. LTE info command provides currently used cellular tower information:
| Code Block | ||
|---|---|---|
| ||
phy-cellid: 384
earfcn: 1300 (band 3, bandwidth 20Mhz) |
...
| Property | Description |
|---|---|
| phy-cellid (integer; Default: ) | Physical Cell Identification (PCI) of currently used cell tower. |
| earfcn (integer; Default: ) | Absolute Radio Frequency Channel Number |
...
for R11e-LTE and R11e-LTE6
| Code Block | ||
|---|---|---|
| ||
AT*Cell=<mode>,<NetworkMode>,<band>,<EARFCN>,<PCI>
where
|
...
<mode> : 0 – Cell/Frequency disabled 1 – Frequency lock enabled 2 – Cell lock enabled <NetworkMode> 0 – GSM 1 – UMTS_TD 2 – UMTS_WB 3 – LTE <band> Not in use, leave this blank <EARFCN> earfcn from lte info <PCI> phy-cellid from lte info |
...
To lock modem at previously used tower at-chat can be used:
| Code Block | ||
|---|---|---|
| ||
/interface lte at-chat lte1 input="AT*Cell=2,3,,1300,384" |
...
For R11e-LTE all set on locks are lost after reboot or modem reset. Cell data can be also gathered from "cell-monitor".
...
Use cell lock to set the primary band to the 1300 earfcn and use the second channel for the ca-band:
| Code Block | ||
|---|---|---|
| ||
/interface lte at-chat lte1 input="AT*Cell=2,3,,1300,138" |
...
Now it uses the earfcn: 1300 for the primary channel:
| Code Block | ||
|---|---|---|
| ||
primary-band: B3@20Mhz earfcn: 1300 phy-cellid: 138
ca-band: B3@5Mhz earfcn: 1417 phy-cellid: 138 |
...
You can also set it the other way around:
| Code Block | ||
|---|---|---|
| ||
/interface lte at-chat lte1 input="AT*Cell=2,3,,1417,138" |
...
Now it uses the earfcn: 1417 for the primary channel:
| Code Block | ||
|---|---|---|
| ||
primary-band: B3@5Mhz earfcn: 1417 phy-cellid: 138
ca-band: B3@20Mhz earfcn: 1300 phy-cellid: 138 |
...
For R11e-LTE6 modem cell lock information will not be lost after reboot or modem reset. To remove cell lock use at-chat command:
| Code Block | ||
|---|---|---|
| ||
/interface lte at-chat lte1 input="AT*Cell=0" |
...
for R11e-4G
| Code Block | ||
|---|---|---|
| ||
AT%CLCMD=<mode>,<mode2>,<EARFCN>,<PCI>,<PLMN>
AT%CLCMD=1,1,3250,244,\"24705\"
where
|
...
<mode> : 0 – Cell/Frequency disabled 1 – Cell lock enabled |
...
<mode2> : 0 - Save lock for first scan 1 - Always use lock (after each reset modem will clear out previous settings no matter what is used here) <EARFCN> earfcn from lte info <PCI> phy-cellid from lte info <PLMN> Mobile operator code |
...
All PLMN codes available here this variable can be also left blank
To lock modem to the cell - modem needs to be in non operating state, easiest way for R11e-4G modem is to add CellLock line to "modem-init" string:
| Code Block | ||
|---|---|---|
| ||
/interface lte set lte1 modem-init="AT%CLCMD=1,1,3250,244,\"24705\"" |
...
Multiple cells can also be added by providing list instead of one tower informatin in following format:
| Code Block | ||
|---|---|---|
| ||
AT%CLCMD=<mode>,<mode2>,<EARFCN_1>,<PCI_1>,<PLMN_1>,<EARFCN_2>,<PCI_2>,<PLMN_2> |
...
For example to lock to two different PCIs within same band and operator:
| Code Block | ||
|---|---|---|
| ||
/interface lte set lte1 modem-init="AT%CLCMD=1,1,6300,384,\"24701\",6300,385,\"24701\"" |
Cell MonitorCell monitor allows to scan available nearby mobile network cells:
...