Bluetooth Mesh Data Forwarding via Rate-Switched Regional Flooding
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Solution Overview
Problem
The conventional Bluetooth Mesh network's flooding forwarding mechanism leads to network congestion and excessive power consumption due to simultaneous data forwarding by numerous nodes, without considering power efficiency.
Innovation Solution
Implement a data forwarding method that switches data transmission at different rates, utilizing the transmission distance difference between these rates to achieve regional flooding and reduce network congestion, while minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If simple flooding forwarding mechanism is adopted in Bluetooth Mesh network, then data can be transmitted to all nodes, but network congestion occurs and performance deteriorates sharply
Solution Approach 1:
The patent applies local quality by differentiating forwarding behavior based on node location and packet type. Different transmission rates (rate 1, rate 2, rate 3) are used for different packet types (data packet, acknowledgment packet, control packet) to optimize local forwarding decisions. This ensures that only necessary nodes forward packets, reducing overall network congestion while maintaining comprehensive data coverage.
Solution Approach 2:
The patent changes the transmission rate parameter dynamically based on packet type and network conditions. By switching between multiple transmission rates, the system optimizes the balance between transmission distance and power consumption, reducing the number of nodes that need to forward packets while ensuring data reaches all necessary destinations.
2Productivity
If random delay is set for each forwarding node to reduce simultaneous forwarding, then network congestion is reduced, but power consumption of device nodes increases
Solution Approach 1:
The patent changes the transmission rate parameter to optimize the balance between congestion reduction and power consumption. By using higher transmission rates for certain packet types, packets can be transmitted more efficiently with fewer retransmissions and less delay, thereby reducing overall power consumption while still alleviating network congestion.
3Use of energy by moving object
If forwarding range D max and D min is set for each node, then number of simultaneous forwarding nodes is reduced and power consumption decreases, but forwarding range setting needs to be written in advance
Solution Approach 1:
The patent uses transmission rate as a dynamic parameter to control forwarding behavior, replacing the need for pre-configured forwarding ranges. By changing transmission rates based on packet type and network conditions, the system achieves efficient power management without requiring complex pre-configuration of forwarding ranges for each node.
Data Source
AI summary
A data forwarding method and apparatus in a Bluetooth Mesh network are disclosed. According to the present disclosure, on the basis of not changing the original Bluetooth protocol, switching is performed to transmit the forwarded data at different transmission rates multiple times. The transmission distance difference between different transmission rates is used to achieve regional flood forwarding, thereby reducing a large number of flooding of device nodes in the network and avoiding network congestion, and improving the performance of the entire Bluetooth Mesh network.