NFC Adaptation Layer for IoT IP Connectivity Stability
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Solution Overview
Problem
In IPv6 packet transmission for low power devices using NFC, the temporary generation of link layer addresses leads to loss of IP connectivity when physical obstructions interrupt communication, requiring re-establishment of connections and vulnerability to hacking.
Innovation Solution
A device and method for NFC-based low power networking that includes an adaptation layer to request and manage link layer node IDs, ensuring IP connectivity by caching and generating new IDs as needed to maintain continuous communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a temporary link layer address is generated for each NFC connection, then device identification is simplified, but IP connectivity is lost when physical obstructions interrupt communication
Solution Approach 1:
The patent applies preliminary action by pre-generating and caching multiple link layer node IDs before NFC connection is interrupted. When physical obstruction occurs, the cached node IDs are already available for immediate use, eliminating the need to regenerate addresses and maintaining IP connectivity without interruption.
Solution Approach 2:
The patent changes the parameter of link layer node ID from being dynamically generated to being pre-generated and cached. This parameter change allows the system to switch between multiple pre-prepared node IDs when connection interruption occurs, thereby maintaining IP connectivity while keeping the address generation mechanism simple.
2Loss of information
If link layer addresses are regenerated after connection interruption, then address uniqueness is maintained, but communication efficiency decreases and security is compromised
Solution Approach 1:
The patent pre-generates multiple link layer node IDs and stores them in a cache before connection interruption occurs. This preliminary action ensures that when interruption happens, unique addresses are immediately available without regeneration, maintaining both address uniqueness and communication efficiency.
Solution Approach 2:
The patent creates multiple copies of link layer node IDs in advance and stores them in cache. These pre-copied addresses can be immediately deployed when connection is restored, eliminating the need to regenerate addresses and preventing communication delays while ensuring address uniqueness through the copying mechanism.
3Object-affected harmful factors
If multiple intentional touches are used for data transmission, then NFC security is maintained, but IP connectivity cannot be sustained across interruptions
Solution Approach 1:
The patent pre-generates and caches multiple link layer node IDs before NFC connection is interrupted. This preliminary preparation enables the system to maintain IP connectivity across interruptions by immediately switching to cached addresses, while still requiring multiple intentional touches for actual data transmission, thus preserving both NFC security and IP connectivity continuity.
Data Source
AI summary
Provided is a method and device for low power networking based on near field communication (NFC). The device for low power networking based on NFC may include an adaptation layer for the NFC configured to request a link layer node identification (ID), and a logical link layer including a binding to NFC for returning the link layer node ID to the adaptation layer for the NFC to secure an internet protocol (IP) connectivity in response to a request for the link layer node ID.