Dual Communication Subsystem for Low Latency Data Collection
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Solution Overview
Problem
Current data collection systems in battery-operated devices face challenges in achieving low latency and high data transfer while minimizing power consumption, particularly in systems that require quick retrieval of large amounts of data, as existing low data-rate networks are limited in range and power efficiency, leading to short battery life and restricted access.
Innovation Solution
Implementing a dual communication subsystem in both data collector and endpoint devices, with a low data rate subsystem for regular scheduled transfers and a high data rate subsystem for larger or urgent data transfers, allowing devices to power off the high data rate system after use to conserve energy, and using a combination of RF and cellular communication standards for efficient data exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high data rate communications are used for large amounts of data, then data transfer speed is improved, but power consumption increases significantly
Solution Approach 1:
The communication system is segmented into two distinct subsystems: a low data rate subsystem for routine data transfers and a high data rate subsystem for large or urgent data transfers. This segmentation allows the device to use appropriate communication mode for each scenario, minimizing unnecessary high power consumption while maintaining high speed capability when needed.
Solution Approach 2:
The system dynamically switches between low data rate and high data rate subsystems based on the data transfer requirements. The controller determines which subsystem to activate by evaluating the amount and urgency of data to be transferred, enabling adaptive power management that balances speed and energy consumption in real-time.
2Speed
If continuous cellular network connection is maintained for high data rate transfers, then data transfer capability is improved, but battery life decreases
Solution Approach 1:
Instead of maintaining continuous cellular network connection, the system uses periodic wake-up cycles where the high data rate subsystem is activated only when needed for large or urgent data transfers. The subsystem is powered off during normal operation, creating a periodic on/off pattern that extends battery life while maintaining high data transfer capability when required.
Solution Approach 2:
The system autonomously determines when to activate the high data rate subsystem by evaluating local data requirements and urgency levels. This self-service approach eliminates the need for continuous network connection monitoring and allows the device to independently manage its power consumption based on actual operational needs.
3Use of energy by moving object
If low data rate network is used for battery operated devices, then power consumption is reduced, but data transfer speed and range are limited
Solution Approach 1:
The communication system is designed with multi-functionality, incorporating both low data rate and high data rate subsystems within a single device. This universal design allows the device to perform routine low-power data transfers using the low data rate subsystem while maintaining the capability to switch to the high data rate subsystem when speed and range requirements exceed the capabilities of the low data rate system.
Data Source
AI summary
A data collection device capable of communicating with an endpoint device over a network comprises a first communication means for low data rate messaging, a second communication means for high data rate messaging, and a controller configured to send a wake-up command including a request for data to the endpoint device at a low data rate via the first communication means, the wake-up command requiring the requested data to be transmitted at a high data rate, and receive the requested data from the endpoint device at the high data rate via the second communication means. When transmission via a high data rate is not required, data may be transmitted to the data collection device at the low data rate via the first communication means. The wake-up command may involve a regularly scheduled request for data, an unscheduled request for data, and/or an alarm event. Various methodologies are also disclosed.