Written by: Tim Murphy

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The packet core network, which is a network architecture being promoted by TIA as the packet-data standard for upcoming third-generation cdma2000 networks, is a collection of logical and physical entities that provide IP-centric packet-data-based registration, roaming, and forwarding services for mobile nodes.
The author describes IP mobility support, which provides much of the basic functionality for proper IP connectivity in mobile contexts, as well as Ericsson’s implementation in the cdma2000 PCN, which makes use of a packet data service node, home agents, foreign agents and AAA servers (datacom AAA and telecom AAA).
[First published in Ericsson Review no. 02, 2001]