PGW IP Flow Mobility for Weighted Multi-Access Link Aggregation

The patent introduces a Network-based IP Flow Mobility (NBIFOM) entity as an intermediary component within the 3GPP core network. This NBIFOM entity acts as a mediator that coordinates traffic flow distribution across decoupled 3GPP and non-3GPP access networks, enabling simultaneous active connections without requiring complex modifications to the access networks themselves. The NBIFOM entity manages the routing decisions and maintains session state information, thereby resolving the technical contradiction by providing the necessary coordination functionality at the network core level.

The patent extends the traditional link aggregation architecture by adding a new dimensional layer of control at the core network level. Instead of implementing link aggregation solely at the access network level (single dimension), the solution introduces core network-based flow mobility management as an additional dimensional layer. This allows traffic flows to be dynamically routed across multiple access networks based on network conditions and policy, thereby enabling simultaneous active connections across decoupled access networks while maintaining manageable complexity through centralized control.

The NBIFOM entity integrated into the 3GPP core network is designed to perform multiple functions simultaneously: it manages IP flow mobility, performs load balancing across access networks, maintains session state information, and enforces policy control. By consolidating these multiple functions into a single core network component, the patent achieves efficient load balancing and communication quality optimization without proportionally increasing overall core network complexity. The multi-functional design allows the system to address multiple requirements through a unified architectural element.

The patent implements dynamic parameter adjustment mechanisms within the core network's link aggregation functionality. The NBIFOM entity monitors network conditions, traffic patterns, and quality of service metrics, then dynamically adjusts routing parameters, flow distribution weights, and session management policies. This parameter-based control approach enables efficient load balancing and communication quality optimization while maintaining flexibility. By changing operational parameters rather than restructuring the core network architecture, the solution achieves high productivity without permanent increases in structural complexity.