Multicast Bridge Node for Cross-Network Data Distribution
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Solution Overview
Problem
Multicast communication in tree-like networks often leads to network congestion and battery consumption due to unnecessary data forwarding, and members of a multicast group may not receive data as nodes are only configured for intra-network communication, resulting in incomplete data distribution across separate networks.
Innovation Solution
The techniques involve forming a Point-to-Multipoint Sub-Tree (PST) by enabling or disabling a pruning state in nodes based on membership and child count, and bridging communication between networks to facilitate multicast data distribution across multiple networks by designating a virtual member node to forward data between networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nodes forward multicast data through the entire DODAG to reach all potential members, then complete data distribution is achieved, but network congestion and battery consumption increase due to unnecessary communications
Solution Approach 1:
The patent segments the multicast distribution by creating a Point-to-Multipoint Sub-Tree (PST) that includes only the necessary paths to actual group members. Instead of distributing through the entire DODAG, the PST prunes unnecessary branches, reducing energy consumption while maintaining complete data delivery to legitimate members.
Solution Approach 2:
The patent applies local quality by enabling or disabling the pruning state at different nodes based on their specific roles. Nodes closer to the source may have different pruning states compared to nodes farther away, allowing optimized local behavior that collectively reduces overall energy consumption while maintaining distribution completeness.
2Device complexity
If nodes are configured only for intra-network communication, then network simplicity is maintained, but members of a multicast group across separate networks cannot receive data
Solution Approach 1:
The patent enables nodes to perform multiple functions by allowing them to act as bridges between different networks. A node can maintain its primary intra-network function while also facilitating inter-network communication for multicast groups, achieving multi-functionality without requiring completely separate infrastructure.
Solution Approach 2:
The patent introduces virtual member nodes that serve as intermediaries between separate networks. These virtual members enable communication bridging by receiving data from one network and forwarding it to members in another network, maintaining simplicity while enabling cross-network delivery.
3Productivity
If a Point-to-Multipoint Sub-Tree is formed to reduce unnecessary forwarding, then network traffic is reduced, but the structure becomes more complex
Solution Approach 1:
The patent implements dynamics by allowing nodes to dynamically adjust their pruning state based on current network conditions and membership information. The PST structure is not fixed but can be modified as nodes join or leave groups, maintaining efficiency while managing complexity through adaptive behavior.
Solution Approach 2:
The patent employs feedback mechanisms where nodes exchange membership information and pruning state updates. This feedback loop allows the PST structure to be optimized continuously, with nodes receiving instructions to enable or disable pruning based on real-time network state, balancing efficiency and manageability.
Data Source
AI summary
Techniques for bridging communication between multiple networks to facilitate distribution of multicast data are described herein. For example, the techniques may identify a particular node that is able to communicate with each network and instruct the particular node to act as a bridge between the networks. The particular node may forward data from either network to the other network. This may allow data for a multicast group to be distributed to members of the multicast group that are located in separate networks.