Implantable Device Dynamic Retransmission for Battery Life
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Solution Overview
Problem
Conventional implantable medical devices (IMDs) face inefficiencies in data transmission due to unnecessary retransmissions, which waste power and reduce battery life, as they employ fixed retransmission schemes regardless of channel conditions.
Innovation Solution
IMDs dynamically configure data retransmission based on contextual meaning, adjusting the maximum number of retransmission attempts on a packet-by-packet basis according to the data type and priority, using a data context module and retransmission module to manage retransmissions effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed retransmission schemes are used for all data packets, then data reliability is improved, but power consumption increases and battery life decreases
Solution Approach 1:
The patent implements dynamic retransmission configuration where the maximum number of retransmission attempts is adjusted based on data context and priority rather than using a fixed scheme. The system evaluates data importance and channel conditions to determine appropriate retransmission levels, making the retransmission behavior adaptive and context-dependent.
Solution Approach 2:
The patent applies different retransmission strategies to different data packets based on their specific characteristics. High-priority data receives more retransmission attempts while low-priority data receives fewer or no retransmissions, creating localized quality variations in retransmission effort across different data types.
2Reliability
If maximum retransmission attempts are increased for all data, then data transmission reliability is improved, but battery life is reduced
Solution Approach 1:
The patent changes the retransmission parameter (maximum number of attempts) based on data priority and context. Instead of maintaining a constant high retransmission parameter for all data, the system adjusts this parameter dynamically, using higher values for critical data and lower or zero values for non-critical data, thereby extending battery life while maintaining necessary reliability.
Solution Approach 2:
The patent applies partial retransmission action by providing full retransmission protection only for high-priority data packets while using reduced or no retransmission for lower-priority packets. This selective approach ensures adequate reliability for critical information without unnecessarily extending transmission attempts for less important data.
3Reliability
If redundant transmission is performed for every data packet, then data integrity is improved, but transmission efficiency decreases
Solution Approach 1:
The patent implements local quality by applying different transmission redundancy levels to different data packets based on their priority and context. Critical data receives full redundant transmission protection while non-critical data uses minimal or no redundancy, optimizing the balance between integrity and efficiency for each specific data type.
Solution Approach 2:
The system dynamically adjusts transmission redundancy based on real-time evaluation of data characteristics and channel conditions. The retransmission configuration changes adaptively rather than using a static redundant transmission approach for all packets, improving overall transmission efficiency while maintaining data integrity where necessary.
Data Source
AI summary
An implantable medical device (“IMD”) as described herein includes an adjustable data retransmission scheme, which controls the manner in which data is retransmitted by the IMD. The retransmission feature can be adjusted in a dynamic manner based upon the type, context, or meaning of the telemetry data transmitted by the IMD. The IMD may process contextual meaning information that influences its data retransmission configuration. Such adjustability enables the IMD to satisfy minimum telemetry requirements in a manner that does not waste power, thus extending the IMD battery life.