Connectivity Service Network is defined as a set
of network functions that provide IP connectivity to user terminals.
A CSN can provide the following functions:
• MS IP address and endpoint parameter allocation for
user sessions;
• Internet access;
• AAA proxy/server;
• Policy and admission control based on user profiles;
• ASN-CSN tunneling support;
• Subscriber billing;
• Inter-CSN tunneling for roaming;
• Inter-ASN mobility management and mobile IP home
agent functionality;
• Network services such as connectivity for peer-to-peer
services, provisioning, authorization and/or connectivity to IP multimedia
services, and to enable lawful interception;
• Connectivity to Internet and managed services such as IP Multimedia Subsystem (IMS),vi Location-Based Services (LBS),vii Multicast and Broadcast
Services (MBS), etc.;
• Over-the-air activation and provisioning of mobile WiMAX
terminals. The CSN may further comprise network elements such
as routers, AAA proxy/servers, user databases, and interworking functions.
