LLDP Frame Extension for IoT Sensing Data Collection
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Solution Overview
Problem
IoT systems face challenges in efficiently collecting sensing data and managing metadata, as existing methods require multiple communication protocols and manual association, leading to increased costs and errors.
Innovation Solution
A data collection system using a lightweight standardized communication protocol like LLDP, where sensing data is stored in an extended field within a frame, allowing for simultaneous transmission and error-free association with metadata.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual communication protocols are operated for collecting sensing data and metadata separately, then the collection of sensing data and metadata can be achieved, but the system costs increase and operations become complicated
Solution Approach 1:
The patent merges the collection of sensing data and metadata into a single communication protocol (LLDP) instead of using separate protocols. The terminal device embeds both sensing data and metadata within the same LLDP frame structure, allowing simultaneous collection through one protocol, thereby reducing system complexity while maintaining data collection accuracy
Solution Approach 2:
The LLDP protocol is extended to serve multiple functions: it simultaneously performs device discovery, configuration information exchange, and sensing data transmission. By making the communication protocol universal, the system eliminates the need for separate dedicated protocols for different data types, reducing operational complexity
2Reliability
If sensing data and metadata are collected separately and manually associated, then both types of data can be gathered, but human errors occur during association
Solution Approach 1:
The patent combines sensing data and metadata into a single structured frame format transmitted through LLDP. The data collection unit receives both data types together in one message, eliminating the manual association step entirely and preventing human errors while simplifying operations
Solution Approach 2:
The terminal device performs preliminary organization of sensing data and metadata into a pre-structured frame format before transmission. This preliminary structuring includes embedding both data types with proper identifiers and relationships already established, so the data collection unit receives ready-to-use associated data without manual intervention
3Adaptability or versatility
If multiple systems are developed and constructed for data collection, then comprehensive data gathering is achieved, but development and construction costs increase
Solution Approach 1:
The patent makes the LLDP protocol universal by extending its frame structure to carry both device information and sensing data. This single multi-functional protocol replaces multiple specialized systems, achieving comprehensive data collection capability while significantly reducing development and construction costs
Solution Approach 2:
The patent modifies the LLDP protocol parameters by extending the frame structure to include sensing data fields. By changing the protocol parameters rather than creating new protocols, the system achieves enhanced data collection capability using existing infrastructure, reducing overall system cost
Data Source
AI summary
An object of the present disclosure is to provide a data collection system and a data collection method which are capable of collecting sensing data and various pieces of metadata by a single communication protocol and capable of associating the sensing data with the metadata without errors. A data collection system 301 of the present disclosure is a data collection system that performs communication from a terminal 11 to a data collection unit 12 by a standardized communication protocol (LLDP or HTIP), in which the terminal 11 stores sensing data detected by a sensor device in an extended field different from a field in which metadata is stored, within a frame specified by the communication protocol, and the data collection unit 12 associates the sensing data with the metadata based on information for identifying the terminal described in the frame.