Sensor Network Congestion Control via Dynamic Bandwidth Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sensor network systems face challenges in preventing and eliminating communication network congestion, especially when sharing networks with other systems, as setting an upper limit on transmission does not effectively address congestion caused by increased communication from other systems.
Innovation Solution
A sensor network system that includes a server device with a determination unit to assess congestion based on the time difference between transmission and reception times, and a control unit that instructs the gateway device to selectively withhold or prioritize sensor data transmission from multiple sensor devices, thereby managing communication bandwidth to mitigate congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an upper limit is set to the transmission amount to prevent congestion, then transmission congestion can be prevented under normal conditions, but congestion cannot be eliminated once it occurs when the communication network is shared with other systems
Solution Approach 1:
The server device monitors the communication network state by comparing transmission-reception time differences against a reference value, and dynamically adjusts the transmission amount by controlling the gateway device to withhold or transmit sensor data based on real-time congestion detection, enabling both prevention and elimination of congestion
Solution Approach 2:
The system transitions from a static upper limit approach to a dynamic control mechanism where the transmission amount is continuously adjusted based on real-time congestion detection, allowing the system to adapt to changing network conditions and eliminate congestion when it occurs
2Adaptability or versatility
If the communication network is shared with other systems, then network resource utilization increases, but congestion occurs due to increased communication amount from other systems
Solution Approach 1:
The server device continuously monitors network congestion state through time difference comparison and provides feedback control to the gateway device, enabling the system to detect and respond to congestion caused by other systems while maintaining network sharing capability
Solution Approach 2:
The system changes the transmission parameter (transmission amount) dynamically based on network conditions, adjusting the gateway device's data transmission behavior to maintain stable communication despite increased network usage from other systems
Data Source
AI summary
A server device includes a determination unit and a control unit. The determination unit determines the degree of congestion of a communication network on the basis of a difference between the time difference, between the transmission time and the reception time of sensor data transmitted from a gateway device to the server device, and the communication period of time taken in a state where congestion does not occur. The control unit determines a sensor device from which sensor data is collected and a sensor device in which collection of sensor data is withheld on the basis of the determination result of the degree of congestion of the communication network, and sends an instruction including the determined content to the gateway device.