LoRaWAN Gateway Processing for Duplicate Packet Reduction
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Solution Overview
Problem
The existing LoRaWAN protocol faces inefficiencies due to duplicate data packets, limited gateway processing capabilities, and complex network registration processes, leading to server overload and reduced network performance.
Innovation Solution
A modified LoRaWAN-based structure with enhanced data packets containing specific address and acknowledgement information, allowing gateways to perform processing tasks, including edge computing and AI algorithms, reducing communication between gateways and minimizing server load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nodes broadcast messages to all gateways using ALOHA protocol, then network coverage and connectivity are improved, but duplicate messages are generated causing server and gateway performance degradation
Solution Approach 1:
The patent segments the network functionality by introducing a gateway controller that centralizes the duplicate message removal function. Instead of every gateway independently processing and forwarding duplicate messages to the server, the gateway controller receives messages from multiple gateways, removes duplicates, and forwards only unique messages to the server. This segmentation of the duplicate removal function resolves the contradiction by maintaining comprehensive network coverage while eliminating performance degradation from duplicate processing.
2Reliability
If the server handles all processing tasks including OTAA, duplicate packet removal, routing, and acknowledgement, then centralized control is maintained, but the server becomes overloaded and response speed decreases
Solution Approach 1:
The patent extracts specific processing functions from the server and assigns them to the gateway controller. The gateway controller takes over responsibilities for OTAA (Over-The-Air Activation), duplicate packet removal, routing decisions, and message acknowledgement. This extraction of functions from the overloaded server maintains centralized control through the gateway controller while significantly improving response speed, as the gateway controller handles these tasks locally without requiring constant server intervention.
Solution Approach 2:
The gateway controller serves as an intermediary between the gateways and the server. It mediates processing tasks by receiving messages from gateways, performing local processing (duplicate removal, routing, acknowledgement), and only forwarding necessary unique messages to the server. This intermediary role maintains centralized control through coordinated management while improving response speed by handling routine tasks locally without constant server involvement.
3Power
If gateways are equipped with favorable processors capable of high calculating requirements, then processing capability is improved, but the LoRaWAN protocol does not provide rules for gateways to perform processing tasks
Solution Approach 1:
The patent introduces dynamic functionality to the gateway controller, enabling it to adaptively perform processing tasks based on network conditions and message types. The gateway controller dynamically handles OTAA activations, duplicate removal, routing decisions, and acknowledgements based on real-time network state. This dynamic capability allows the system to utilize the favorable processors at gateways effectively while the protocol complexity is managed through the gateway controller's intelligent decision-making rather than rigid protocol rules.
Data Source
AI summary
The present invention relates to a method and a system for wireless communication. A method and a system according to the present invention is implemented by a node, a gateway, and a server. The nodes and the gateway communicating with each other via an improved LoRaWAN protocol for extending further functions of the gateway, such as data processing or the same, result in computing requirements decreasing at the server, reducing in time and several communicating procedures among network components, thus enhancing the efficiency for using network resources.