Wireless Node Controller Dynamic Payload Adjustment
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Solution Overview
Problem
In wireless local area networks (WLANs), especially in medical facilities, existing technologies like IEEE 802.11e fail to dynamically prioritize critical patient data and alarm messages effectively, leading to delays or loss due to congestion and varying signal quality, which can impact patient safety.
Innovation Solution
A node with a controller that adjusts the data payload based on signal quality indicators and dynamically assigns priority levels using adaptive Differentiated Services Control Parameters, ensuring critical data is transmitted efficiently and reliably.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the 802.11e DSCP parameter is used for traffic prioritization, then traffic differentiation is achieved, but the parameter is static and cannot adapt to changing network conditions or patient acuity levels
Solution Approach 1:
The patent implements dynamic adjustment of the DSCP parameter based on real-time network conditions and patient acuity levels. The system continuously monitors signal quality indicators and modifies the DSCP value accordingly, transitioning from a static prioritization scheme to a dynamic one that adapts to changing conditions in the wireless network environment.
Solution Approach 2:
The system incorporates feedback mechanisms by monitoring signal quality indicators and using this information to adjust the DSCP parameter. This closed-loop approach ensures that the prioritization scheme responds to actual network conditions and patient needs, improving both reliability and adaptability simultaneously.
2Productivity
If multiple wireless devices access the WLAN simultaneously, then network coverage and monitoring capacity are improved, but network congestion increases causing delays and data loss
Solution Approach 1:
The patent applies local quality by assigning different DSCP priority levels to different devices or data streams based on their specific needs. Critical patient data receives higher priority treatment while less critical traffic gets lower priority, allowing the network to handle multiple devices simultaneously while ensuring reliable transmission of critical information.
3Productivity
If the data payload size is increased to improve transmission efficiency, then more data can be sent per packet, but the risk of data loss increases when signal quality degrades
Solution Approach 1:
The system dynamically adjusts payload size based on real-time signal quality indicators. When signal quality is good, larger payloads are used to maximize transmission efficiency. When signal quality degrades, the payload size is reduced to minimize data loss, creating a dynamic balance between efficiency and reliability.
Data Source
AI summary
A node is configured for transmitting a data packet over a wireless network. The node includes a controller configured to provide individualized control of a payload in the data packet. The controller is further configured to receive data to be transmitted over the wireless network, to determine a signal quality indicator for the wireless network, and to adjust the amount of the data included in the payload based on the signal quality indicator.