Using PLMN X₁ only for the local network. PLMN X₁ uses a separate CN from PLMN A and PLMN B, but with interconnected CNs X₁-A and X₁-B, to enable full mobility. PLMN X₁ is EPLMN with PLMN A and B to enable full mobility.

As above, but using “MOCN-methods” inside PLMN X₁ RAN to select PLMN A or B CN, i.e. all user equipments, UEs, are handled as “non-supporting”.

As a MORAN network using separate PLMN X₁/PLMN X₂ or using PLMN X₁ only for the local network, but “roaming”, possibly with “over the top”, OTT, anchoring to support mobility. It will be obvious to the person skilled in the art, that the disclosure is not limited to the above legacy mobility mechanisms, but is also equally applicable to other mobility mechanisms that are yet to be specified.

Current regulations and business logic implies that existing outdoor networks sometimes remain separate. In the scenario disclosed in FIG. 1, there are multiple outdoor systems PLMN A and PLMN B operated by separate operators, and islands of local systems PLMN X₁ and PLMN X₂ that may be operated by a local system operator. These local systems may use licensed spectrum, unlicensed spectrum, or a mix of the two, or, indeed, hybrid spectrum licensing regimes.