How Multi-PLMN Works
Each mobile network has a unique PLMN (Public Land Mobile Network) identifier, which consists of:
- MCC (Mobile Country Code) — the country code;
- MNC (Mobile Network Code) — the operator code.
When Multi-PLMN is used, a single base station broadcasts several PLMNs simultaneously. The smartphone analyzes the available network identifiers and selects the one that matches the subscriber’s SIM card.
Despite sharing a common radio access network (RAN), each operator continues to serve its own 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 is not economically viable or where rapid coverage expansion is required.
The most common scenarios include:
- radio network sharing among several MNOs;
- launching an MVNO without building its own 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 when modernizing mobile infrastructure, as several operators gradually migrate to shared radio access equipment.
Advantages of Multi-PLMN
| Advantage | Practical Benefit |
| Shared infrastructure | Lower capital expenditure (CAPEX) |
| Rapid coverage expansion | No need to build a new radio network |
| Independence of services | Each operator retains its own network core |
| More efficient use of equipment | Higher base station utilization |
| Faster launch of new operators | Simplifies the deployment of MVNOs and corporate networks |
Multi-PLMN vs. MORAN: What’s the Difference
These technologies are often used together when sharing mobile infrastructure, but they refer to different mechanisms.
Multi-PLMN (Multiple Public Land Mobile Network) is a technology in which a single base station or other radio network element can provide access to several public mobile networks (PLMNs) at the same time. A separate PLMN identifier is broadcast for each operator, which the subscriber device uses to identify the available network.
MORAN (Multi-Operator Radio Access Network) is an architecture for sharing a radio network among several operators. Operators use shared base stations and part of the RAN equipment, but retain separate logical resources and, as a rule, their own frequency bands.
| Criterion | Multi-PLMN | MORAN |
| Main purpose | Provide access for 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 several PLMN IDs | Each operator retains its own PLMN |
| Relationship with other technologies | Can be used in various sharing scenarios | Often implemented together with Multi-PLMN |
In many modern mobile networks, both technologies are applied together.
Multi-PLMN in LTE and 5G Networks
Multi-PLMN support is defined by 3GPP standards and is actively used in LTE and 5G networks.
In 5G architecture, the technology helps to:
- share infrastructure among several operators;
- provide resources to corporate customers;
- deploy dedicated networks (Private 5G);
- implement network virtualization and Network Slicing.
As a result, operators can make more efficient use of 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 MNO’s existing infrastructure while maintaining their own network identity and subscriber services. This is especially relevant when launching a Full MVNO or Light MVNO, where it is important to ensure independent service management with minimal infrastructure build-out costs.
Stingray’s solutions for turnkey MVNO launches help integrate a virtual operator with the host provider’s network and automate billing, subscriber management, and the delivery of mobile services. Learn more here.
Technical FAQ
What is Multi-PLMN in simple terms?
Multi-PLMN is a technology that allows a single mobile network to serve several operators at the same time. Subscribers of different operators connect to the same radio network but continue to use their own services and tariffs.
How does Multi-PLMN differ from a standard 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 the same time, allowing it to be used by different operators.
Why would operators use Multi-PLMN?
The technology helps reduce network build-out 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 providing services to multiple operators on a single radio network.
