Network Node Group Registration for Master-Node Redundancy
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Solution Overview
Problem
Existing wireless communication systems face challenges in achieving communication redundancy due to the single point of failure in master nodes and access management functions, which hinder the simultaneous use of multiple PLMN and SNPN networks for enhanced reliability, particularly in remote driving applications.
Innovation Solution
A network node system that includes a reception unit, control unit, and transmission unit to manage terminal registrations, ensuring that master nodes and access management functions are distinct for different terminals within a group, thereby enabling redundancy through diverse network connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single master node and access management function are used for terminal registration, then device complexity is reduced, but communication reliability deteriorates due to single point of failure
Solution Approach 1:
The patent segments the access management function by introducing multiple master nodes (first master node and second master node) and distributing terminal groups to different master nodes. This segmentation eliminates the single point of failure while maintaining manageable system complexity through structured organization of terminals and nodes.
Solution Approach 2:
The patent changes the parameter of master node identification by introducing a group ID that terminals include in their registration requests. This allows the system to dynamically determine which master node to use based on the group ID, enabling load distribution and redundancy without requiring complex centralized control logic.
2Reliability
If multiple PLMN networks and wireless accesses are simultaneously used, then communication redundancy is improved, but device complexity increases due to system configuration requirements
Solution Approach 1:
The patent implements multi-functionality by enabling master nodes to serve multiple terminal groups simultaneously. Each master node can handle registrations from different groups, creating a universal system that provides redundancy without requiring separate dedicated infrastructure for each terminal or group, thus avoiding excessive complexity.
Solution Approach 2:
The patent uses copying by creating redundant registration paths through multiple master nodes that can each independently handle terminal registrations. The system copies the access management functionality across multiple nodes, providing backup paths that improve redundancy while maintaining the same operational procedures at each node.
3Reliability
If redundant communication paths are established through multiple master nodes, then communication reliability is improved, but ease of operation deteriorates due to registration management complexity
Solution Approach 1:
The patent implements self-service by enabling terminals to autonomously determine which master node to register with based on the group ID included in their device. The terminal itself performs the selection logic by checking its configured group ID against the master node's supported groups, eliminating the need for complex centralized assignment procedures and simplifying operation.
Solution Approach 2:
The patent uses feedback mechanisms where master nodes respond to registration requests by indicating whether they support the terminal's group ID. This feedback loop allows terminals to automatically select appropriate master nodes based on node responses, simplifying the registration process while maintaining reliable redundant paths through multiple nodes.
Data Source
AI summary
A network node includes: a reception unit configured to receive a registration request of a terminal; a control unit configured to obtain registration information of a network node that performs controlling of registrations of terminals belonging to a group including the terminal, and determine whether or not a master node used for relaying the registration request is a master node different from that of another terminal belonging to the group based on the registration information; and a transmission unit configured to transmit a registration request including an identifier used for identifying the master node in a case of a master node different from that of another terminal belonging to the group.