Data Core Network (DCN)

DCN is configured with Packet Data Serving Node(PDSN), Home Agent(HA), Authorization, Authentication and Accounting(AAA), and Element Management System(EMS). DCN processes packet data on MS and sends or receives the packet data through AN.

Packet Data Serving Node (PDSN)

PDSN connects AN to DCN in the CDMA2000 1X or 1xEV-DO network. PDSN sets, maintains, or releases MS and PPP. PDSN functions as Foreign Agent(FA) for HA to provide mobile Internet Protocol(IP) services.

Home Agent (HA)

HA connects to the private network or another network in order to allow mobile IP users to connect to internet. HA exchanges data with FA(PDSN) in a variety of encryption methods.

Authorization, Authentication and Accounting (AAA)

AAA performs the authorization and authentication functions as well as billing for packet data communication service subscribers. AN-AAA performs authorization for MS, while AAA performs authorization for subscribers. PDSN and HA make a request for information on user authorization and authentication to AAA if required, and delivers the billing information to AAA periodically.

AAA supports authorization in accordance with the user profiles saved in the database.

Element Management System (EMS)

EMS supports the interface function for the DCN components. EMS performs I/O of the operator commands, displays an error/configuration/status/performance messages, restarts the system, and downloads the system software blocks.