LoRaWAN Radio Node Energy Management via Credit Point System
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Battery-operated radio nodes in LoRaWAN networks face premature battery depletion due to uncontrollable energy consumption during downlink data receptions and processing, which shortens their intended service life of ten years.
Innovation Solution
Implementing a credit point system that manages energy usage by controlling uplink transmissions and downlink processing based on available energy credits, allowing the radio node to adjust its operations to conserve energy by reducing or postponing non-essential transmissions and processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the radio node receives and processes all downlink transmissions, then complete data communication is achieved, but energy consumption increases causing premature battery depletion
Solution Approach 1:
The radio node selectively processes only essential downlink transmissions based on predefined criteria, rather than processing all received transmissions. This partial action approach allows the node to maintain essential communication functionality while reducing energy consumption from processing non-essential data, directly resolving the contradiction between complete data communication and energy conservation
2Reliability
If the radio node opens multiple receive windows for downlink reception, then data reception capability is improved, but energy consumption increases
Solution Approach 1:
The radio node dynamically adjusts the number and timing of receive windows based on current energy levels, transmission priorities, and network conditions. Instead of maintaining fixed multiple receive windows, the system adapts the receive window configuration to balance data reception requirements with energy conservation, resolving the contradiction between reception capability and energy consumption
3Productivity
If the radio node transmits uplink data frequently, then data transmission rate is improved, but battery life is reduced
Solution Approach 1:
The radio node implements periodic transmission intervals with variable frequencies based on energy availability and data priority. Instead of frequent fixed-interval transmissions, the system uses adaptive periodic transmission where the interval length adjusts according to battery status, allowing essential data to be transmitted while extending battery life by reducing unnecessary transmission frequency
Data Source
Figure 1
Figure 2~4
Figure 5
AI summary
Method for energy management of a battery-powered radio node for bidirectional data transmission in a Long Range Wide Area Network (LoRaWAN) between the radio node and a network server and/or an application server via at least one gateway, wherein the radio node switches to a transmit mode for an uplink transmission and to a receive mode for a downlink reception, wherein the radio node opens at least one receive window after an uplink transmission, and wherein, based on a credit point system, the current sending or non-sending of an uplink transmission and/or the current processing or non-processing of a downlink transmission is controlled during the operation of the radio node depending on the credit point status of the radio node.