Layered Network Control Architecture for Scalable Traffic Optimization

The patent divides the centralized control system into multiple hierarchical layers (application layer, control layer, data layer). Each layer handles specific control functions independently, allowing the system to maintain optimization capabilities while reducing overall complexity through functional segmentation. The control plane is separated from the data plane, with controllers at different levels managing different aspects of network traffic.

The patent introduces a vertical dimensional structure by stacking multiple control layers above the data plane. This layered architecture transforms the flat centralized control into a multi-dimensional hierarchy, where each layer operates at a different abstraction level. The application layer handles high-level policy decisions, the control layer manages medium-term traffic optimization, and the data layer executes low-level packet forwarding, enabling scalability through dimensional expansion.

The patent implements dynamic tracking where the level of detail in network state monitoring adapts based on current network conditions and control objectives. Controllers adjust their monitoring granularity dynamically, tracking only relevant state variables at each hierarchical level. This allows precise tracking when needed while reducing processing overhead during stable periods, maintaining response time performance.

The patent applies partial tracking by having each control layer monitor only the subset of network state variables relevant to its specific functions. The application layer tracks high-level traffic patterns, the control layer monitors medium-term queue states, and the data layer observes immediate packet-level conditions. This partial observation strategy achieves sufficient control precision without the excessive processing burden of complete state tracking.

The patent segments the distributed controller system into hierarchical layers where each layer has clearly defined responsibilities and information requirements. Controllers at the application layer handle policy-level coordination, control layer controllers manage traffic optimization coordination, and data layer controllers handle packet forwarding coordination. This segmentation reduces overall coordination complexity by localizing coordination requirements to specific layers.

The patent introduces intermediary controllers at each hierarchical level that mediate information exchange between controllers at different layers. These intermediary controllers aggregate information from lower layers, process it according to layer-specific rules, and forward relevant information upward. This intermediary structure simplifies coordination by filtering and structuring information flow, reducing the complexity of direct peer-to-peer coordination between all distributed controllers.

The patent implements dynamic control computation where the frequency and depth of control calculations adapt based on network conditions. During stable periods, controllers reduce computation frequency and use simplified models. During transient conditions or when performance degradation is detected, controllers increase computation frequency and apply more sophisticated control algorithms. This dynamic adaptation maintains responsive control when needed while reducing energy consumption during normal operation.

The patent applies partial control computation by having each hierarchical layer compute only the control actions necessary for its specific functions. The application layer computes policy-level control parameters, the control layer computes traffic optimization parameters, and the data layer computes packet forwarding decisions. This partial computation strategy achieves sufficient responsiveness for each control objective without the excessive computational and energy costs of computing all possible control actions at all layers.