When user equipment (UE) changes its serving mobile network (e.g. when crossing country borders), an interruption in connectivity can occur as the UE needs to connect to a new network which takes some time, i.e. scanning for a public land mobile network that it can attempt to use or ‘visit’ (hence VPLMN).
These interruptions can often result in disconnected phone calls and/or blackout periods for connected vehicle services lasting up to several minutes. This report seeks to look at this problem and examine the potential solutions available.
