IMD Wireless Telemetry Data Rate Optimization
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Solution Overview
Problem
Existing communication systems for wireless data transmission between implantable medical devices (IMDs) and external devices often lead to high energy consumption and reduced longevity of IMD batteries, due to inefficient data rate determination and ineffective quality of service methods.
Innovation Solution
A communication system that determines the highest possible uplink and downlink data rates based on signal strength and noise level, without the need for additional measurements within the IMD, thereby optimizing energy usage and extending battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a high data rate is used for telemetry communication between IMD and external device, then data transmission speed is improved, but energy consumption increases and communication reliability deteriorates due to communication loss and high repeat rate
Solution Approach 1:
The system dynamically adjusts the data rate based on real-time communication conditions. The external device determines signal strength and noise level, then selects an optimal data rate from available options, allowing the system to adapt between high speed and low energy consumption modes depending on channel quality
Solution Approach 2:
The invention changes the data rate parameter based on measured communication conditions. By adjusting this critical parameter according to signal strength and noise level, the system optimizes the trade-off between transmission speed and energy consumption while maintaining reliability
2Reliability
If usual quality of service methods are used for determining overall performance of data transmission service, then comprehensive quality assessment is improved, but energy consumption increases due to ineffective methods for short communication
Solution Approach 1:
The invention extracts only the essential measurements needed for short communication (signal strength and noise level at the external device) and uses these to determine optimal data rate, eliminating the need for comprehensive QoS negotiations and additional measurements within the IMD that would consume energy
Solution Approach 2:
The external device performs the quality assessment and data rate determination itself using its own measurements of signal strength and noise level, rather than requiring the IMD to perform comprehensive QoS evaluations. This self-service approach at the external device reduces energy consumption at the implanted device
3Productivity
If additional measurements within the IMD are performed to determine optimal data rate, then communication performance is improved, but device complexity and energy consumption increase
Solution Approach 1:
The external device acts as an intermediary that performs the complex measurements and data rate determination. Instead of requiring the IMD to perform measurements and negotiations, the external device uses its superior processing capabilities and measurement resources to determine optimal parameters, simplifying the IMD design
Data Source
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AI summary
A communication system (10) for wireless data transmission between an implantable medical device (IMD, 40) and an external device (60) and a respective communication method are disclosed aiming at the increase of longevity of an IMD energy source. The communication system comprises a communication unit (62) and a processor (61). The IMD (40) is configured to monitor a bodily parameter of a patient and/or is configured to deliver a therapy signal to the patient, wherein the IMD comprises a transceiver module configured to exchange the data with the communication unit of the external device in an uplink direction from the transceiver module to the communication unit and in a downlink direction from the communication unit to the transceiver module. Further, a respective computer program product and computer readable data carrier is described.