IoT Gateway Active Measurement via Packet Interception
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Solution Overview
Problem
Existing active measurement techniques for network performance observability in IoT systems are complex and resource-intensive, particularly in wireless networks, due to the need for separate interfaces and the intrusive nature of measurements, which can impact energy consumption, CPU usage, and network overhead, especially in devices with limited capabilities.
Innovation Solution
A network device captures active measurement packets and determines an estimated measurement metric using a measurement model associated with the wireless device, allowing it to respond to measurement packets without transmitting them to the device, thereby reducing energy consumption and network overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional active measurement techniques are deployed in IoT systems, then network performance observability is improved, but device complexity and resource consumption increase
Solution Approach 1:
The patent introduces a gateway device as an intermediary between the controller and wireless devices. The gateway captures measurement packets, determines measurement metrics using stored measurement models, and responds without forwarding packets to the actual wireless devices. This intermediary approach maintains measurement precision while protecting resource-constrained devices from the complexity and resource burden of active measurement processing.
Solution Approach 2:
The patent creates a copy of the measurement functionality by storing measurement models in the gateway device. Instead of requiring the actual wireless devices to perform complex measurement processing, the gateway uses copied measurement models to generate equivalent measurement results. This copying approach preserves measurement accuracy while eliminating the need for complex processing at the edge devices.
2Measurement precision
If active measurement packets are transmitted to wireless devices, then measurement data is obtained, but energy consumption and network overhead increase
Solution Approach 1:
The patent extracts the measurement packet transmission step from the traditional measurement process. The gateway device captures measurement packets intended for wireless devices and generates measurement responses without actually transmitting packets to the devices. This extraction eliminates the energy consumption associated with wireless packet transmission while maintaining measurement data accuracy through the use of stored measurement models.
Solution Approach 2:
The patent skips the actual packet transmission phase by having the gateway device directly generate measurement responses based on stored models. Instead of completing the full measurement cycle (transmit packet → receive at device → process → respond), the system rushes through to the essential outcome by computing results at the gateway, thereby eliminating unnecessary energy expenditure on wireless transmissions.
3Adaptability or versatility
If separate calling interfaces are implemented for each sensor network type, then compatibility with different wireless networks is improved, but device complexity and operational cost increase
Solution Approach 1:
The patent implements a universal interface approach where the gateway device handles multiple wireless network types through a single standardized interface. The gateway stores measurement models that can be applied across different network types (IEEE 802.15.4, Wi-Fi, Bluetooth Low Energy) without requiring separate calling interfaces for each type. This universal approach maintains adaptability to different networks while significantly reducing interface complexity and operational costs.
Data Source
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AI summary
A first network device enables active measurement in a network path between a second network device acting as a controller of a network performance observability protocol and a wireless device. The first network device captures a measurement packet from the second network device; determines a destination of the measurement packet; and determines a measurement model associated with the destination. The measurement model represents a correspondence between one or more parameters related to the wireless device and estimated values of a measurement for the wireless device. The first network device determines a current value of a parameter related to the wireless device; determines, based on the current value of the parameter and the measurement model, a current estimation of the measurement for the wireless device; and responds to the measurement packet based on the current estimation of the measurement while avoiding to transmit the measurement packet to the wireless device.