Identity Location Separation Network Architecture
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Solution Overview
Problem
Legacy IP networks face challenges with endpoint mobility due to circuitous routing, increased transmission delay, and bandwidth waste, as well as semantic overload of IP addresses, which are used for both location and identity, leading to disruptions in mobile Internet communications.
Innovation Solution
An identity and location separation architecture is introduced, where access networks handle user identity and backbone networks manage routing, using separate identifiers (AID and RID) to isolate identity and location functions, allowing for dynamic IP address reallocation and reduced routing load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If IP address is used for both location and identity, then routing functionality is achieved, but endpoint mobility is not supported and semantic overload occurs
Solution Approach 1:
The patent segments the IP address functionality into two separate identifiers: a permanent identity identifier (HI) that remains unchanged with mobility, and a temporary location identifier (IP address) that changes with location. This segmentation resolves the semantic overload by assigning distinct roles to each identifier, allowing endpoints to move freely while maintaining stable identity for upper-layer protocols.
Solution Approach 2:
The patent extracts the identity function from the location function by introducing a separate host identity (HI) that is independent of IP address changes. The IP address is taken out solely for location identification and routing purposes, while the HI handles identity recognition and connection maintenance, thereby enabling mobility without disrupting upper-layer protocols.
2Adaptability or versatility
If fixed anchor points are used to support endpoint mobility, then mobility is enabled, but circuitous routing and increased transmission delay occur
Solution Approach 1:
Instead of using fixed anchor points (home agents) to which mobile nodes must route through, the patent inverts the approach by allowing the mobile node to directly obtain a new IP address in the visited network. The identity identifier (HI) enables direct communication without requiring data to detour through the home network, thereby eliminating circuitous routing and reducing transmission delay.
Solution Approach 2:
The patent introduces a mobility management entity that acts as an intermediary to bind the permanent identity identifier (HI) with the temporary IP address. This mediator enables direct routing by translating the HI to the current IP address without requiring data to pass through fixed anchor points, thus avoiding circuitous paths while maintaining mobility support.
3Adaptability or versatility
If Mobile IP protocol is implemented at endpoints, then endpoint-based mobility is achieved, but deployment difficulty increases due to endpoint support requirements
Solution Approach 1:
The patent introduces a network-based mobility management entity that acts as an intermediary between mobile nodes and the core network. This mediator handles the complexity of mobility management centrally, allowing simple mobile nodes to obtain mobility support without implementing complex Mobile IP protocols locally. The mobility entity performs address binding and routing functions, reducing deployment complexity at endpoints.
Solution Approach 2:
The patent enables mobile nodes to self-configure by obtaining temporary IP addresses directly from visited networks using their permanent identity identifier (HI). The mobility management entity automatically binds the HI with the temporary address, allowing endpoints to achieve mobility without manual configuration or complex protocol implementation, thereby simplifying deployment.
4Speed
If IP address changes with location, then routing is maintained, but connection disruption occurs in upper-layer protocols
Solution Approach 1:
The patent segments the addressing system into a permanent identity identifier (HI) that remains constant for connection maintenance and a temporary IP address that changes with location for routing. Upper-layer protocols continue to use the stable HI for connection identification, while the IP address changes transparently in the network layer, thereby maintaining both routing efficiency and connection continuity without disruption.
Solution Approach 2:
The patent extracts the identity function from the IP address by introducing a separate host identity (HI) that upper-layer protocols use for connection maintenance. The IP address is taken out solely for network-layer routing purposes and can change without affecting upper-layer connections, as the HI remains constant and continues to identify the communication endpoint reliably.
Data Source
Figure 1(A)~1(B)
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AI summary
The present invention provides a network based on identity identifier and location separation architecture and each component in the network. The network based on identity identifier and location identifier separation architecture includes access networks and a backbone network, and the access networks and the backbone network have no overlap in topology relation, wherein, the access network is located at an edge of the backbone network, and is set to achieve endpoint access in the access network; the backbone network is set to achieve routing and forwarding of data messages between the endpoints which access via the access networks; in the network, an access identifier (AID) is taken as an identity identifier of an endpoint user, and a routing identifier (RID) is used as a location identifier of the endpoint. The present invention achieves the identity identifier and location separation based on the network.