RadioAccessTechnology does not have a configuration parameter in mbed-os config system

[dlfryar-zz]

RadioAccessTechnology is not configurable using the mbed-os config system.

Configuration example:

"radio-access-technology": {
"help": "GSM,GSM_COMPACT,UTRAN,EGPRS,HSDPA,HSUPA,HSDPA_HSUPA,E_UTRAN,CATM1,NB1,UNKNOWN",
"value": ""CATM1""
},

enum RadioAccessTechnology

Same related question in the forum

[dlfryar-zz]

cc: @AriParkkila

[ciarmcom]

ARM Internal Ref: IOTCELL-1110

[AriParkkila]

@dlfryar thanks, we will add that.

[AnttiKauppila]

@AriParkkila What is the status of this?

[kivaisan]

I don't think RAT should be a cellular library configuration as RAT can be changed via CellularNetwork's nsapi_error_t set_access_technology(RadioAccessTechnology rat) API.

If user is using EasyCellularConnection, this can be called for example like:

EasyCellularConnection cellConn(true);
cellConn.get_device()->open_network(cellConn.get_serial())->set_access_technology(CellularNetwork::RAT_NB1);

[dlfryar-zz]

Doesn't 3GPP TS 27.007 AT mention the power savings benefit from doing this via supported radio accesses +CSRA?

Set command is used to configure the availability of the radio accesses inherently supported by the MT. E.g. in a GSM-only environment, other radio access technologies could be disabled to reduce power-consumption.

A configuration parameter seems to make more sense than editing code to set desired preferences.

[AriParkkila]

PR ARMmbed/mbed-os#8821