IP Mobility Control Apparatus for Packet Loss Reduction
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Solution Overview
Problem
Conventional network base IP mobility protocols face issues with packet loss during handovers and resource wastage due to the inability to efficiently manage tunnel setup and teardown between routers.
Innovation Solution
A communication system using a network base IP mobility protocol that includes a control apparatus to manage the transfer of data between routers at the source and destination, ensuring seamless handovers by generating and canceling tunnel settings based on notifications from mobile terminals and routers, thereby preventing packet loss and releasing resources effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a network base IP mobility protocol is used without tunnel management, then the system is simpler to operate, but packet loss occurs during handovers and resources are wasted
Solution Approach 1:
The control apparatus automatically manages tunnel setup and teardown based on handover notifications from mobile terminals and routers. The system self-services by detecting handovers through notifications and autonomously establishing or canceling tunnels without manual intervention, thereby maintaining packet delivery reliability while avoiding the complexity of manual tunnel management
Solution Approach 2:
The system uses feedback from notifications sent by mobile terminals and routers to trigger tunnel management actions. When a handover notification is received, the control apparatus responds by setting up or tearing down tunnels as needed, creating a closed-loop control system that adapts to network conditions and prevents packet loss while managing resources efficiently
2Reliability
If tunnels are continuously maintained between routers, then packet loss during handovers is prevented, but network resources are wasted due to unnecessary tunnel persistence
Solution Approach 1:
The tunnel configuration dynamically adapts to network conditions by being automatically established when handovers are detected and automatically torn down when no longer needed. This dynamic approach ensures tunnels exist only during necessary handover periods, maintaining reliability while preventing resource wastage from continuous tunnel persistence
Solution Approach 2:
The control apparatus discards (tears down) tunnels after they have served their purpose during handovers, and recovers network resources by removing unnecessary tunnel configurations. This ensures that tunnels are maintained only when needed for handover continuity, preventing resource waste while maintaining reliability
3Loss of energy
If manual tunnel setup and teardown is performed, then resource usage is optimized, but packet loss occurs during handovers due to delayed tunnel establishment
Solution Approach 1:
The control apparatus performs preliminary actions by automatically setting up tunnels in response to handover notifications before actual data transmission needs to occur. This automated preliminary setup eliminates delays associated with manual tunnel establishment, ensuring tunnels are ready when needed while optimizing resource usage through automatic teardown when no longer required
4Reliability
If the control apparatus automatically manages tunnels based on notifications, then packet loss is eliminated during handovers, but the control apparatus complexity increases
Solution Approach 1:
The control apparatus provides self-service by automatically managing tunnel configurations based on notifications it receives from mobile terminals and routers. This automation eliminates the need for complex manual management interfaces while ensuring reliable packet delivery during handovers, as the system self-adjusts tunnel states in response to network events
Data Source
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AI summary
There are provided a communication system, a control apparatus, a router, and communication method thereof, there are capable of eliminating loss in packets during a handover and effectively releasing a resource of a router in a network base IP mobility protocol in which a mobile mode is movable without mounting a special protocol. When an MN 1 as a mobile terminal is moved, a router at a movement destination, a mobile access gateway (MAG)b 3 that has received a router solicitation from the MN 1 sends a location registration to a control apparatus, a local mobility anchor (LMA) 4, and when the LMA 4 determines as a handover, the LMA 4 instructs a router at a movement source, an MAGa 2 or an MAGb 3 to transfer a buffer from the MAGa 2 to the MAGb 3.