Overlay Network Node Selective Rule Distribution
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Solution Overview
Problem
Current overlay network technologies face scalability issues and high resource loads due to excessive flow filtering rules and path information distribution, particularly when handling a large number of mobile nodes and multiple communication services, leading to inefficient service delivery and increased processing loads.
Innovation Solution
An overlay network node that selectively distributes and updates flow filtering rules and path information based on interpreted requests, minimizing unnecessary message transmission and retaining only necessary data, thereby optimizing resource usage and scalability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flow filtering rules and path information are distributed to all overlay network nodes, then service coverage is improved, but memory load and processing load increase significantly
Solution Approach 1:
The patent segments the overlay network into multiple regions or zones, and distributes flow filtering rules selectively to nodes within specific regions rather than all nodes. This segmentation allows service coverage to be maintained within each region while reducing the overall memory load across the network by limiting rule distribution scope.
Solution Approach 2:
The patent implements local quality by making different overlay network nodes hold different sets of flow filtering rules based on their geographic or logical position in the network. Instead of uniform distribution, each node stores only the rules relevant to its local region, reducing memory load while maintaining appropriate service coverage through localized rule enforcement.
2Reliability
If flow filtering rules are updated from multiple nodes, then service reliability is improved, but message transmission overhead increases
Solution Approach 1:
The patent extracts the flow filtering rule update function from all nodes and concentrates it in selected master nodes or controllers. These master nodes are responsible for generating and distributing rule updates to slave nodes, reducing the number of update messages required while maintaining service reliability through centralized coordination.
Solution Approach 2:
The patent implements preliminary action by having master nodes pre-process and prepare flow filtering rule updates before distribution. This preliminary preparation allows slave nodes to receive ready-to-apply updates in a single message, reducing transmission overhead compared to distributed updates from multiple nodes.
3Speed
If path information is distributed to optimize routing, then transmission speed is improved, but processing load increases
Solution Approach 1:
The patent introduces intermediary nodes or path computation elements that handle path information management and routing optimization. These intermediaries compute optimal paths and distribute path information to relevant nodes, improving transmission speed while reducing processing load on end nodes by centralizing the complex path computation functions.
Data Source
AI summary
There is disclosed a technology which improves scalability in an overlay network system and which efficiently supplies a service with respect to a user, and according to the technology, for example, in a case where a mobile node (110) transmits an update message including a specific flow filtering rule to an HA (120) in order to receive a service concerning functions of multiple interfaces, the HA (120) interprets the flow filtering rule, specifies an HA 160 to transfer a data packet from CNs (180, 190), an HA (150) to transfer a data packet from the CN (190) and an HA (140) to transfer a data packet from a CN (1100), and selectively transmits to each HA a message including information useful for the respective HA.