Network Address Duplication Management in Multi-Interface Communication
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Solution Overview
Problem
Communication apparatuses with multiple network interfaces face challenges in determining whether to transmit packets to infrastructure or P2P networks when both use the same network address, leading to potential security issues and communication failures due to incorrect routing.
Innovation Solution
A communication apparatus with detection units for identifying address changes in infrastructure networks and disconnection/reconnection mechanisms to ensure unique IP addresses are used across both network types, preventing duplication and ensuring secure communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the communication apparatus uses the same network address in both infrastructure network and P2P network, then it can simplify address management, but it causes packet transmission errors and security issues due to inability to determine correct network path
Solution Approach 1:
The patent segments the network address management by separating infrastructure network addresses from P2P network addresses. The determination unit divides address usage into distinct network contexts, ensuring that each network type uses appropriate addresses without conflict, thereby resolving the contradiction between simplified management and reliable transmission.
2Reliability
If the communication apparatus monitors and changes P2P network addresses to avoid duplication with infrastructure network, then it maintains secure communication, but it increases system complexity and requires additional detection and control mechanisms
Solution Approach 1:
The patent implements a feedback mechanism where the determination unit continuously monitors address usage in both infrastructure and P2P networks. When address duplication is detected, the system automatically adjusts P2P network addresses to avoid conflict, providing real-time feedback-based address management that maintains security without requiring overly complex manual intervention systems.
3Reliability
If the communication apparatus resets IP addresses in P2P network when duplication is detected, then it resolves address conflicts, but it causes communication interruption and requires reconnection procedures
Solution Approach 1:
The patent applies preliminary action by having the determination unit proactively identify potential address conflicts before they cause communication failures. By detecting address duplication risks in advance and preemptively adjusting P2P addresses, the system avoids the need for disruptive reset and reconnection procedures, thus maintaining address uniqueness while minimizing communication interruption.
Data Source
AI summary
A communication apparatus has a first interface for connecting with a first network and a second interface for connecting with a second network. The communication apparatus detects that an address used in the first network is changed, and furthermore, when it detects that the address that is changed in the first network duplicates an address being used in the second network, disconnects a connection of a link layer with the second network, and after the disconnection, reconstructs the second network using an address which is not duplicated by the changed address.