Unicast-Based Multicast Tree Construction for Network Latency Reduction

The patent applies asymmetry by transitioning from a well-balanced symmetric tree structure to an unbalanced tree structure that optimizes for network performance. The node selector identifies the optimal parent node based on LAN membership, creating asymmetric connections where nodes in the same LAN are preferentially connected regardless of tree balance. This resolves the contradiction by sacrificing structural symmetry to achieve higher transmission speeds and better bandwidth utilization within LANs.

The patent applies local quality by making connection decisions based on local network characteristics (LAN membership) rather than global tree balance. The node selector examines the local network environment of each node and establishes connections that optimize for local bandwidth and latency conditions. This allows different parts of the tree to have different connection patterns, with nodes in the same LAN connected directly to exploit local high-speed connectivity, thereby reducing latency without requiring global rebalancing.

The patent applies self-service by enabling the multicast tree to construct and maintain itself automatically without manual intervention. The node selector autonomously identifies optimal parent nodes based on LAN membership, and the node linker automatically establishes connections and performs necessary rearrangements. This self-organizing mechanism maintains protocol compatibility through unicast while achieving efficient automatic tree construction, resolving the contradiction between adaptability and productivity.