LoRa Transceiver Frequency Band Assignment via Flag Embedding
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Solution Overview
Problem
The deployment of Long Range Wide Area Network (LoRaWAN) apparatuses is hindered by differences in frequency bands across countries, leading to increased complexity and cost due to varying available frequency bands and regulatory limitations.
Innovation Solution
A method is disclosed where multiple transceivers are assigned distinct sets of frequency bands, with one transceiver embedding a flag in requests to a mother node, allowing for efficient use of a broader range of frequency bands and enhanced signal coverage, enabling seamless communication across different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple transceivers are deployed to cover different frequency bands, then frequency band coverage is improved, but device complexity and deployment cost increase
Solution Approach 1:
The system segments the frequency band coverage function across multiple transceivers, where each transceiver is responsible for specific frequency bands. This segmentation allows the network to cover diverse frequency bands by deploying specialized transceivers rather than requiring each transceiver to handle all bands, thereby improving coverage while managing complexity through functional division.
Solution Approach 2:
The mother node is designed with multi-functionality to manage multiple transceivers operating on different frequency bands. It performs universal functions including frequency band assignment, flag interpretation, and coordinated control of multiple transceivers, allowing a single device to handle diverse frequency band requirements without increasing individual transceiver complexity.
2Adaptability or versatility
If multiple transceivers are deployed to cover different frequency bands, then frequency band coverage is improved, but deployment cost increases
Solution Approach 1:
The patent merges the control and management functions for multiple frequency bands into a single mother node, which coordinates multiple child nodes (transceivers). This consolidation reduces deployment costs by avoiding the need for multiple full-featured nodes, as each child node can operate with simplified functionality under mother node coordination, thereby achieving broad frequency coverage more cost-effectively.
Solution Approach 2:
The mother node acts as an intermediary that manages frequency band assignments and coordinates communication between devices on different frequency bands. This intermediary role allows the system to achieve comprehensive frequency coverage without requiring each transceiver to independently manage all frequency bands, reducing individual device complexity and overall deployment cost.
3Area of stationary object
If transceivers use different frequency bands, then signal coverage is improved, but network management complexity increases
Solution Approach 1:
The system employs feedback mechanisms where child nodes send requests to the mother node, and the mother node responds with frequency band assignments and coordination instructions. This feedback loop enables automated network management, allowing the system to expand signal coverage across multiple frequency bands while the mother node automatically handles the complexity of coordinating transmissions and preventing interference.
Solution Approach 2:
The mother node performs preliminary actions by pre-assigning frequency bands to child nodes before they begin transmission. This preliminary configuration simplifies ongoing network management, as the frequency band allocation is established in advance, reducing the real-time coordination complexity and enabling broader signal coverage through pre-planned frequency distribution.
Data Source
AI summary
A method for controlling Long Range Wide Area Network (LoRa) apparatus includes: selecting a first transceiver and a second transceiver among a plurality of transceivers, assigning a first set of frequency bands to the first transceiver, assigning a second set of frequency bands, different from the first set of frequency bands, to the second transceiver, setting the first transceiver so that the first transceiver embeds a first flag in a first request when sending the first request to a mother node and setting the second transceiver so that the second transceiver embeds the first flag in the first request when sending the first request to the mother node.