BSC support for "network sharing"
This allows for RAN sharing between operators.It includes
- transmitting some new SI types on the BCCH (mainly SI22, optionally SI23 and SI21) to broadcast up to four additional PLMNs.
- some additional signaling to select different operators' MSCs in the BSC in MOCN
- some additional functionalty in a MSC if the MSC is shared in GWCN
Relevant top-level spec: TS 23.251
See also Interesting3GPPSpecsForDevelopers