Terminal Device Network Control Information Segmentation
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Solution Overview
Problem
Existing Delay Tolerant Networking (DTN) systems lack a mechanism to separate data forwarding networks from data utilizing networks, leading to potential data leakage and inefficient data transmission, as terminals are either part of both networks or neither, limiting the number of data forwarding networks and increasing data delivery time.
Innovation Solution
A terminal device and control method that manage network control information and data access control information simultaneously to determine participation in data forwarding and utilizing networks, allowing for separate configurations without adding control information to forwarded data, enabling terminals to participate in either or both networks independently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals are required to participate in both data forwarding network and data utilizing network together, then data security and network separation are improved, but the number of terminals in data forwarding network is reduced and data delivery time increases
Solution Approach 1:
The patent segments the network participation rights by introducing two independent control mechanisms: network control information (NCI) for data forwarding network participation and data access control information (DACI) for data utilizing network participation. This allows terminals to be segmented into different network roles independently, enabling some terminals to participate only in data forwarding while others participate in both, thus increasing the number of forwarding terminals and improving data delivery speed without compromising security.
2Reliability
If separate data forwarding networks are created for different data utilizing networks, then data leakage is prevented, but the number of available forwarding terminals is reduced
Solution Approach 1:
The patent implements logical segmentation rather than physical separation. Terminals are assigned different network control information (NCI) values to control their participation in different data forwarding networks, while data access control information (DACI) controls data utilization rights. This allows a single terminal to participate in multiple data forwarding networks simultaneously with different NCI values, preventing data leakage between networks while maximizing the pool of available forwarding terminals.
Solution Approach 2:
The patent makes terminals universal by enabling them to participate in multiple data forwarding networks and data utilizing networks simultaneously through the dual-control mechanism. A terminal can hold multiple NCI values for different forwarding networks and multiple DACI values for different utilizing networks, making it a multi-functional node that can forward data for multiple networks while preventing unauthorized data leakage through controlled access.
3Adaptability or versatility
If control information is added to forwarded data for network management, then network control capability is improved, but data transmission overhead increases
Solution Approach 1:
The patent extracts network control information (NCI) and data access control information (DACI) from the data transmission process and manages them independently within terminal devices. Instead of embedding control information in every forwarded data packet, the control information is stored and managed separately in control information storage units, reducing data transmission overhead while maintaining strong network control capability through independent management of forwarding and utilization rights.
Data Source
AI summary
In a network system in which a plurality of data utilizing networks are present, in order to achieve both prevention of data spread across different data utilizing networks and an increase in the number of terminals configuring a data forwarding network, a terminal device that reproduces and forwards data by the store-and-forward system determines participation in a data forwarding network and a data utilizing network by managing network control information for network control and data access control information for data access control simultaneously with data.