Mobile IP multiple registrations and PCC interactions

摘要

In a wireless communication system having multiple access nodes, a home agent (HA) maintains home address (HoA) for a mobile node so that an IP session can be established. As the mobile node moves within a coverage area of various access nodes, the mobile node can establish a secure relationship with a local access gateway and thereby register a local IP address, referred to as a care-of-address (CoA), with the HA. Mobile IP protocol can be established so that multiple sessions can be conducted. In maintaining policy and charging control (PCC), HA informs a policy and charging rules function (PCRF), which in turn can then send the appropriate PCC rules (e.g., IP flows and related policies) to a policy and charging enforcement function (PCEF) for a particular access gateway. Coordination necessary to associate CoA and HoA can further include filter information as to application can run on a particular interface.

主权项

1. A method for provisioning policy rules for multiple data packet sessions over a wireless communication network to user equipment, comprising:
establishing a first Internet Protocol (IP) session for user equipment (UE) for wireless data packet communications by obtaining an IP address provided by an access policy enforcement function at an access node, wherein the first IP session is established between the UE and the access node; instantiating a second IP session for the UE for the wireless data packet communications by binding the IP address of the first session with a home address (HoA) provided by a core policy enforcement function, wherein the core policy enforcement function is provided remote to the access node, and wherein the second IP session is established between the UE and a packet data network gateway; communicating the establishment of the first and second IP sessions to a policy rule function provided in a core network gateway; communicating an associated IP address of the first session in response to instantiation of the second IP session to the policy rule function; and tying the first and the second IP sessions in a binding update to the packet data network gateway to identify the policy enforcement function where the policy rules need to be enforced.