name: GWCN
full_form: Gateway Core Network
context: GWCN applies for EPS and UMTS, not for GSM according to TS 23.251 [6] Network Sharing. In EPS and UMTS sharing network, a supporting UE decodes the shared network information and supplies the available core network operator PLMN-ids as candidates to the PLMN selection procedure. The UE performs network selection among available PLMNs. The UE sends an ATTACH REQUEST message to the network entity indicating the chosen core network operator. Then the shared MME/SGSN determines whether the UE is allowed to attach or not and sends the appropriate ACCEPT/REJECT message back to the UE. If successful, a supporting UE has attached to the selected shared network. Figure 6.2.7.2.1: Example of network selection in GWCN configuration for a supporting UE in a shared EPS network for PWS public key distribution Figure 6.2.7.2.1 shows that network selection procedure in GWCN configuration for network sharing has no impact to public key distribution in NAS SMC for PWS. Moreover, network sharing is an
description: The Gateway Core Network (GWCN) is a shared core network infrastructure that enables multiple network operators to share resources and provide services to their subscribers. In the context of EPS and UMTS, GWCN allows for network sharing between different Public Land Mobile Networks (PLMNs), enabling users to select and attach to available networks.
explanation: GWCN is classified as a Network because it provides the fundamental infrastructure for communication and interconnection between multiple operators and their subscribers.
section_title: 6.2.7.2	GWCN configuration
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