Time-of-Flight Calculation Through FDN Sharing Across Transponders
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Solution Overview
Problem
The challenge in existing systems is the high probability of errors in transmitting the Final_Data message (FDN) required for time-of-flight (ToF) calculations between a user terminal and transponders, leading to incomplete or failed ToF calculations due to the larger link budget needed for FDN, which can result in increased transmission errors.
Innovation Solution
Implementing a method where a transponder receives information about a final data distribution (FDN) and sends it to a processing unit, allowing the processing unit to perform ToF calculations even if it hasn't directly received the FDN, by distributing the FDN among multiple transponders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the FDN is transmitted to all transponders, then each transponder can perform ToF calculation independently, but the transmission error probability increases due to larger link budget requirements
Solution Approach 1:
The system segments the ToF calculation capability across multiple transponders, where only one transponder needs to successfully receive and process the FDN. The FDN is distributed to transponders in a segmented manner rather than requiring all transponders to receive it, reducing the overall transmission error probability while maintaining system reliability.
Solution Approach 2:
One transponder acts as an intermediary that receives the FDN from the initiating device and shares it with other transponders. This intermediary transponder mediates the information distribution, allowing other transponders to perform ToF calculations without directly receiving the FDN, thereby avoiding the transmission errors associated with multiple independent receptions.
2Loss of information
If only one transponder receives the FDN, then transmission errors are reduced, but other transponders cannot perform ToF calculation
Solution Approach 1:
The system merges the FDN information from one receiving transponder and makes it available to multiple transponders. By combining the successful reception event with multiple calculation capabilities, the system achieves both high transmission success rate and broad adaptability for ToF calculations across different transponders.
Solution Approach 2:
The FDN received by one transponder is made universally available to multiple transponders for ToF calculations. This multi-functionality allows a single FDN reception event to serve multiple transponders, enabling them all to perform ToF calculations without each needing to independently receive the FDN.
3Adaptability or versatility
If the FDN is transmitted to multiple transponders, then more transponders can perform ToF calculation, but unnecessary data transfers and costs increase
Solution Approach 1:
The system performs preliminary action by having one transponder receive and store the FDN before other transponders need it. This advance preparation eliminates the need for multiple independent transmissions, reducing data transfer overhead and energy consumption while maintaining the capability for multiple transponders to perform ToF calculations.
Solution Approach 2:
Instead of transmitting the FDN to multiple transponders independently, the system creates copies of the FDN from the single receiving transponder and distributes them on-demand. This copying approach minimizes redundant data transfers and associated energy costs while enabling multiple transponders to access the FDN for ToF calculations.
Data Source
AI summary
A method for improves a time-of-flight (ToF) calculation between a user terminal and a plurality of transponders. The method includes receiving, from the user terminal, information about a final data distribution at a first transponder of the plurality of transponders. The method also includes, sending, from the first transponder, the information about the final data distribution to a processing unit.