ID/Location Hybrid Source Routing for MobilityFirst Network Forwarding
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Solution Overview
Problem
The MobilityFirst network struggles to effectively support inter-domain mobility and has a complicated forwarding process, limiting its scalability and reliability in mobile scenarios.
Innovation Solution
An ID/location hybrid forwarding method based on source routing is introduced, utilizing an extension header with label stacks and a forwarding mechanism identifier bit to differentiate between ID and location identifiers, enabling efficient intra-domain and inter-domain data forwarding by customizing the MobilityFirst network protocol.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MobilityFirst network uses generalized storage-aware routing protocol (GSTAR) for local area networks, then mobility support within small networks is achieved, but the forwarding process becomes complicated and inter-domain mobility is not supported
Solution Approach 1:
The patent segments the forwarding process into two distinct modes: ID-based forwarding for intra-domain routing and location-based forwarding for inter-domain routing. This segmentation allows each mode to be optimized independently, simplifying the overall forwarding process while maintaining mobility support across different network domains.
Solution Approach 2:
The patent introduces a dynamic forwarding mode selection mechanism that automatically switches between ID-based and location-based forwarding based on the network domain context. The control node determines the appropriate forwarding mode by examining the destination address and network domain information, enabling flexible adaptation to different routing scenarios without increasing complexity.
2Adaptability or versatility
If MobilityFirst network expands scale to support inter-domain mobility, then network versatility is improved, but the existing forwarding mechanism fails to support uninterrupted data transmission across domains
Solution Approach 1:
The patent introduces the control node as an intermediary that manages the transition between different forwarding modes and network domains. The control node maintains forwarding state information and coordinates the switching between ID-based and location-based forwarding, ensuring uninterrupted data transmission during inter-domain mobility events.
Solution Approach 2:
The patent implements preliminary action by having the control node pre-establish forwarding paths and state information before mobility events occur. The system prepares forwarding entries and maintains context information in advance, enabling seamless data transmission continuity when mobile nodes move between domains without interruption.
3Device complexity
If traditional routing protocols are used, then network scalability is limited, but source routing greatly simplifies data plane complexity by having control nodes master global network information
Solution Approach 1:
The patent makes the source routing mechanism universal by implementing it in both access domains and core domains, allowing the same simplified forwarding approach to work across different network scales and domains. The control node's ability to master global network information enables this universal application while maintaining scalability through the hybrid ID/location forwarding approach.
Data Source
AI summary
The present invention relates to the technical field of computer networking, in particular to an ID/location hybrid forwarding method based on source routing, including a message format based on an extension header of a MobilityFirst protocol, a source routing forwarding mechanism based on ID identifiers and a source routing forwarding mechanism based on location identifiers. Through the method of the present invention, the source routing forwarding mechanism based on ID identifiers can be adopted in the access domains of the MobilityFirst network to realize the internetworking of intra-domain networks, and the source routing forwarding mechanism based on location identifiers in the core domain realizes the interconnection of inter-domain networks; the method greatly simplifies the processing flow of the data plane of the MobilityFirst network, and meanwhile reserves the design that the ID identifiers and the location identifiers are separated, thereby effectively supporting intra-domain and inter-domain mobile data forwarding.