Server Wireless Device Adaptive Control Architecture
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Solution Overview
Problem
The varying radio link performance in wireless communication networks can disrupt the connectivity between mobile devices and cloud-based controllers, leading to reduced Quality of Service (QoS) in control tasks, especially in applications like autonomous vehicle traffic control, where consistent data access is crucial.
Innovation Solution
A server connected via a wireless communication network that adapts its operation based on estimated imminent connection state by providing information packages to the wireless device to perform control tasks locally when connection quality is low and relying on the server for assistance when connection quality is high, using parameters like signal-to-interference-and-noise ratio, signal strength, and spatial parameters to anticipate and prepare for changes in connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the wireless device relies on continuous cloud-based server control, then control task accuracy is improved, but connectivity requirements increase and QoS deteriorates under varying radio conditions
Solution Approach 1:
The system dynamically adapts the control architecture based on real-time connectivity conditions. When connection quality is high, the system uses cloud-based server control for high accuracy. When connection quality degrades, the system transitions to local device autonomy to maintain reliability. This dynamic switching resolves the contradiction by making the control accuracy flexible rather than fixed.
Solution Approach 2:
The system changes the operational parameters of the control task based on connectivity conditions. The server sends control parameters and models that the device can execute locally when connectivity is poor. This parameter change allows the system to maintain control task accuracy through local execution while adapting to varying connectivity reliability.
2Productivity
If the server provides continuous control assistance, then control task performance is improved, but network bandwidth consumption increases
Solution Approach 1:
Instead of providing continuous full control assistance, the server provides partial control assistance by sending control parameters, models, and updated information at strategic moments. The device executes these partially provided controls locally, achieving good performance while significantly reducing network bandwidth consumption compared to continuous server control.
Solution Approach 2:
The server sends control parameters and models in advance before connectivity degrades or before control tasks are executed. This preliminary provision of control information allows the device to operate autonomously with pre-loaded parameters, improving performance while reducing real-time bandwidth requirements.
3Reliability
If the system operates autonomously at the wireless device, then connectivity requirements are reduced, but control task complexity at the device increases
Solution Approach 1:
The device maintains local copies of control models, parameters, and processed sensor information that were originally generated or updated by the server. These copies enable the device to operate autonomously with reduced connectivity requirements while avoiding the need to implement complex control algorithms from scratch at the device.
Solution Approach 2:
The control system is segmented into server functions (control model generation, parameter optimization, data aggregation) and device functions (local sensor processing, autonomous execution, basic control). This segmentation allows the device to operate autonomously with reduced complexity by offloading the most complex functions to the server when connectivity is available.
Data Source
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AI summary
A server is connected via a wireless communication network to be capable of receiving sensor information from a wireless device and provide control signals based on at least the sensor information to the wireless device for enabling the wireless device to perform a control task. The server is arranged to receive an estimate of imminent connection state of the wireless device and adapt operation such that upon the estimated imminent connection state indicates a connection quality parameter to have a quality below a first threshold, the server provides an information package to be sent to the wireless device for enabling the wireless device to perform at least an increased part of the operation task locally at the wireless communication device, and upon the estimated imminent connection state indicates the connection quality parameter to have a quality above a second threshold, the server provides an information package to be sent to the wireless device for enabling the wireless device to be relieved from performing at least a part of the operation task by the server providing increased aid in performing the control task. The wireless device, methods and computer programs are also disclosed.