This should really be handled on ofono side as it's specific to a single modem tech.
Ofono reports the signal strength through org.ofono.NetworkRegistration Strength property:
Service org.ofono Interface org.ofono.NetworkRegistration Object path [variable prefix]/{modem0,modem1,...}
Properties byte Strength [readonly, optional]
Contains the current signal strength as a percentage between 0-100 percent.
This should really be handled on ofono side as it's specific to a single modem tech.
Ofono reports the signal strength through org.ofono. NetworkRegistra tion Strength property:
Service org.ofono NetworkRegistra tion /{modem0, modem1, ...}
Interface org.ofono.
Object path [variable prefix]
Properties byte Strength [readonly, optional]