How Multi-PLMN Works
Each mobile network has a unique PLMN (Public Land Mobile Network) identifier, made up of:
- MCC (Mobile Country Code) — the country code;
- MNC (Mobile Network Code) — the operator code.
With Multi-PLMN, a single base station broadcasts several PLMNs at once. The smartphone scans the available network identifiers and selects the one that matches the subscriber’s SIM card.
Despite sharing a radio access network (RAN), each operator continues to serve its users through its own core network, billing systems, and service platforms.
Where Multi-PLMN Is Used
The technology is used in situations where building separate networks isn’t economically viable, or where coverage needs to expand quickly.
The most common scenarios include:
- radio network sharing among multiple MNOs;
- launching an MVNO without building a dedicated RAN;
- national roaming networks;
- private enterprise networks;
- Private LTE and Private 5G networks;
- temporary networks for events, industrial sites, and remote areas.
Multi-PLMN is also used during mobile infrastructure modernization, when several operators gradually migrate to shared radio access equipment.
Advantages of Multi-PLMN
| Advantage | Practical benefit |
| Shared infrastructure | Lower capital expenditure (CAPEX) |
| Faster coverage expansion | No need to build a new radio network |
| Service independence | Each operator keeps its own core network |
| More efficient equipment use | Higher base station utilization |
| Faster launch of new operators | Simplifies MVNO and enterprise network rollouts |
Multi-PLMN vs. MORAN: What’s the Difference
These technologies are often used together in mobile infrastructure sharing, but they refer to different mechanisms.
Multi-PLMN (Multiple Public Land Mobile Network) is a technology where a base station or other radio network element can provide access to several public land mobile networks (PLMNs) simultaneously. Each operator’s own PLMN identifier is broadcast, letting the subscriber’s device determine which network is available.
MORAN (Multi-Operator Radio Access Network) is an architecture for sharing the radio network among multiple operators. Operators use common base stations and part of the RAN equipment, but keep separate logical resources and, typically, their own frequency bands.
| Criterion | Multi-PLMN | MORAN |
| Main purpose | Provide access to subscribers of different PLMNs through a shared radio network element | Share radio access equipment and infrastructure |
| What is combined | Identification of several mobile networks on a single RAN element | Radio access equipment and functions |
| Network identifiers | A single base station can broadcast multiple PLMN IDs | Each operator keeps its own PLMN |
| Relationship to other technologies | Can be used in various shared-access scenarios | Often implemented together with Multi-PLMN |
In many modern mobile networks, both technologies are applied at the same time.
Multi-PLMN in LTE and 5G Networks
Multi-PLMN support is defined in the 3GPP standards and is actively used in LTE and 5G networks.
In 5G architecture, the technology helps to:
- split infrastructure among multiple operators;
- provide resources to enterprise customers;
- deploy dedicated networks (Private 5G);
- implement network virtualization and Network Slicing.
This lets operators make more efficient use of their existing infrastructure and launch new services faster, without building separate radio networks.
The Role of Multi-PLMN in Launching an MVNO
For virtual operators, Multi-PLMN makes it possible to use an existing MNO’s infrastructure while keeping their own network identification and subscriber services. This is especially relevant when launching a Full MVNO or a Light MVNO, where independent service management is important while keeping infrastructure build costs to a minimum.
VAS Experts solutions for turnkey MVNO launches help integrate a virtual operator with the host provider’s network and automate billing, subscriber management, and mobile service delivery. Learn more via the link.
Technical FAQ
What is Multi-PLMN in simple terms?
Multi-PLMN is a technology that lets a single mobile network serve several operators at once. Subscribers of different operators connect to the same radio network, but keep using their own services and rate plans.
How does Multi-PLMN differ from a regular mobile network?
In a standard network, a base station broadcasts only one PLMN. With Multi-PLMN, a single base station broadcasts several mobile network identifiers at once, allowing different operators to use it.
Why would operators use Multi-PLMN?
The technology helps lower network build costs, expand coverage faster, share equipment, and launch new operators or MVNOs without building a dedicated radio network.
Is Multi-PLMN used in 5G networks?
Yes. Multi-PLMN is supported by 5G standards and is used for infrastructure sharing, building private mobile networks, Network Slicing, and delivering services to multiple operators over a single radio network.
