Virtual IP Network for Mobile Ad Hoc Routing Stability
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Solution Overview
Problem
Frequent topology changes in mobile ad hoc networks complicate data routing, and existing terrestrial IP routing protocols are inefficient in handling these changes, leading to excessive maintenance traffic and potential routing protocol thrashing.
Innovation Solution
Configuring a mobile ad hoc network as a virtual IP network, where physical paths are represented as logical paths with virtual IP nodes, allowing changes in physical paths without affecting the logical path, and enabling the use of terrestrial IP routing protocols for data routing across the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If terrestrial IP routing protocols are used in MANET, then data routing can be simplified, but frequent topology changes cause excessive maintenance traffic and routing protocol thrashing
Solution Approach 1:
The patent segments the MANET into multiple virtual IP networks, each with its own stable logical topology. By dividing the physical network into multiple virtual instances, each handling specific traffic flows, the system maintains stable routing tables while the physical topology changes, reducing maintenance traffic across the entire network
Solution Approach 2:
The patent implements dynamic virtual network creation and deletion based on traffic patterns. Virtual IP networks are created when needed and deleted when not needed, allowing the system to adapt to changing topology while maintaining stable routing within active virtual networks, thereby reducing unnecessary maintenance traffic
2Ease of operation
If terrestrial IP routing protocols are used in MANET, then routing can be simplified, but routing protocol thrashing occurs due to frequent topology changes
Solution Approach 1:
The patent introduces virtual IP nodes as intermediaries between the physical MANET nodes and the IP routing protocol. These virtual nodes absorb the impact of physical topology changes, presenting a stable logical topology to the routing protocol and preventing routing thrashing while maintaining simplified routing operations
Solution Approach 2:
The system dynamically adjusts virtual network configurations in response to topology changes, but these changes are contained within the virtual network layer and do not propagate to the IP routing protocol, maintaining routing stability while adapting to physical changes
3Stability of the object's composition
If physical paths are represented as logical paths with virtual IP nodes, then changes in physical paths do not affect the logical path, but network complexity increases
Solution Approach 1:
The patent creates virtual copies of IP nodes and paths that mirror the physical network but with stable logical relationships. These virtual representations allow physical changes without affecting logical paths, and the virtual network manager automatically handles the complexity of maintaining these copies, reducing the burden on network configuration
Data Source
AI summary
According to one embodiment, a method for facilitating communication of a MANET is provided. A MANET may include a plurality of nodes configured as a virtual IP network. The virtual IP network may comprise a plurality of physical paths of the MANET. The physical paths may couple an IP network to an IP node. Each physical path may traverse a distinct set of nodes of the MANET. The physical paths may be represented to the IP network as a logical path comprising one or more virtual IP nodes.