Thursday
PDSN (Packet Data Serving Node)
The PDSN is the gate way from RAN into the public aand/or private packet networks. In a simple IP network, the PDSN acts as a standalone Network Access Server, while in a mobile IP network it can be configured as a Home Agent or Foreign Agent. The PDSN does the following activities:
The AAA (Authentication, Authorization, and Accounting) server is used to authenticate and authorize users for network access and to store subscriber usage statistics for billing and invoicing.
The Home Agent (HA) supports seamless data roaming into other networks that support 1xRTT. The HA provides an anchor IP address for the mobile and forwards any mobile-bound traffic to the appropriate network for delivery to the handset. It also maintains user registration, redirects packets to the PDSN and (optionally) tunnels securely to the PDSN. Lastly, the HA supports dynamic assignment of users from the AAA and (again optionally) assigns dynamic home addresses.
- Manage the radio-packet interface between the BSS and IP network establishing, maintenance and terminating link layer to the mobile client.
- Terminate the PPP session initiated by the subscriber.
- Provide an IP address for the subscriber (either from an internal pool or througha DHCP server or through AAA server.
- Perform packet routing to external packet data networks or packet routing to the HA which optionally can be via tunnels.
- Actively manage subscriber services based on the profile information received from the SCS server of the AAA server.
- Authenticate users locally, or forward authentication requests to the AAA server
The AAA (Authentication, Authorization, and Accounting) server is used to authenticate and authorize users for network access and to store subscriber usage statistics for billing and invoicing.
The Home Agent (HA) supports seamless data roaming into other networks that support 1xRTT. The HA provides an anchor IP address for the mobile and forwards any mobile-bound traffic to the appropriate network for delivery to the handset. It also maintains user registration, redirects packets to the PDSN and (optionally) tunnels securely to the PDSN. Lastly, the HA supports dynamic assignment of users from the AAA and (again optionally) assigns dynamic home addresses.
Labels: CDMA
# posted by Uut Pribadi @ 8:28 AM 
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