Modem Control platform constraints
Signal strength
On Qualcomm-based platform, the signal strength indication delta resolution set in le_mrc_SetSignalStrengthIndDelta() API depends on the Radio Access Technology (RAT) used.
For TD-SCDMA RAT technology, the signal delta is set with steps of 1 dBm with a minimum of one dBm. Intermediate values less than 1 dBm are rounded. For the other RAT technologies, the signal delta is set with steps of 0.1 dBm with a minimum of 0.1 dBm.
For example, to set a signal strength indication delta of 10.6 dBm, the delta value must be set to
- This value is rounded to 11 dBm for TD-SCDMA RAT technology. (105 would have been equivalent to 10dBm on TD-SCDMA).
Under TD-SCDMA RAT technology, a delta value less than 10 is forbiden.
APN Length
To set the Access Point Name (APN) for the given profile, le_mdc_SetAPN() API is used.
The maximum APN length is limited by the platform.
| AR755x | AR758x | AR759x | AR8652 | WP750x | WP76xx | WP77xx | WP8548 | |
|---|---|---|---|---|---|---|---|---|
| Maxmium APN length | 62 | 62 | 100 |
Mobile Terminated PDP context
The Mobile Terminated Packet Data Protocol (PDP) context feature is not supported on all platforms. The table below indicates on which platform the feature is supported. ('X' means the feature is supported)
| AR7 | AR755x | AR758x | AR759x | AR8652 | WPx5xx | WP750x | WP76xx | WP77xx | WP85xx | |
|---|---|---|---|---|---|---|---|---|---|---|
| MT-PDP context feature | X | X | X | X |
Jamming detection
The jamming detection feature is supported on following platforms:
| AR755x | AR758x | AR759x | AR8652 | WP750x | WP76xx | WP77xx | WP8548 | |
|---|---|---|---|---|---|---|---|---|
| Jamming detection support | X |
SAR backoff
The SAR backoff state is not supported by all platforms. Also, the maximum number of states may be different among platforms.
| AR755x | AR758x | AR759x | AR8652 | WP750x | WP76xx | WP77xx | WP8548 | |
|---|---|---|---|---|---|---|---|---|
| SAR backoff state feature | X | X | ||||||
| SAR maximum number of states | 8 | 8 |
Perform Pci Network Scan
The PciScan is not supported by all platforms. Also, to be able to perform a Pci scan, the modem must be configured on LTE rat, the configuration can be donne using:
- AT command at!selrat=06
- CM tool cm radio rat LTE
- Legato API le_mrc_SetRatPreferences().
| AR755x | AR758x | AR759x | AR8652 | WP750x | WP76xx | WP77xx | WP8548 | |
|---|---|---|---|---|---|---|---|---|
| PciScan feature | X | X | X |
See Modem Radio Control API
See Modem Data Control API
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