Inter-PLMN Mobility Support
The Inter-Public Land Mobile Network (Inter-PLMN) mobility feature allows the PLMN to change from home-PLMN to visited-PLMN when a User Equipment (UE) moves from its home network to a visited network and vice-versa. This feature provides support for various types of Inter-PLMN mobility cases.
For information on the call flows related to inter-PLMN handover, see the How it Works section.H-UPF Data Path specifications:
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Secondary PDR optimization for Homer calls
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Inter-PLMN and Intra-PLMN handover support with optimization
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Supports GTPU services for Homer calls
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KPI support for Secondary PDR info in PDR
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Handover statistics
UPF supports the following scenarios for various Inter-PLMN mobility:
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5G homer to 5G roamer
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5G homer to 4G roamer
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4G homer to 5G roamer
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4G homer to 4G roamer
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5G roamer to 5G homer
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5G roamer to 4G homer
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4G roamer to 5G homer
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4G roamer to 4G homer
UPF supports the following scenarios for various Intra-PLMN mobility:
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5G homer to 4G homer
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4G homer to 5G homer
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5G roamer to 4G roamer
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4G roamer to 5G roamer
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EUTRAN to WiFi and vice-versa handover