Bluetooth Mesh Power Management via Friend Node Mode Switching
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Solution Overview
Problem
In Bluetooth mesh networks, low power nodes without steady power supplies face uneven power dissipation, leading to shortened lifespans due to the lack of an efficient power management mechanism.
Innovation Solution
A Bluetooth mesh network system and connection method that employs a friend node to operate low power nodes in alternating first and second connection modes based on specific protocols, with mode operation time thresholds to ensure balanced power dissipation across all nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If low power nodes operate continuously in one connection mode, then communication simplicity is improved, but power dissipation becomes uneven and node lifespan is shortened
Solution Approach 1:
The patent applies periodic action by implementing a time-based switching mechanism where low power nodes alternate between first connection mode and second connection mode. The friend node manages mode switching based on accumulated connection time thresholds, ensuring that nodes periodically change their operational state. This periodic switching balances power dissipation across all nodes, extending their lifespan while maintaining communication functionality.
Solution Approach 2:
The patent implements dynamics by making the connection mode flexible and adaptable rather than static. Low power nodes dynamically switch between first connection mode (one-to-one connection) and second connection mode (multiple-to-one connection) based on time thresholds managed by the friend node. This dynamic adjustment allows the system to optimize power consumption patterns while maintaining communication simplicity.
2Reliability
If low power nodes use one-to-one connection mode, then connection reliability is improved, but power consumption increases and battery life decreases
Solution Approach 1:
The patent uses periodic action to alternate between high-reliability one-to-one connection mode and lower-power multiple-to-one connection mode. The friend node tracks accumulated connection time and switches modes when thresholds are reached, ensuring that nodes spend limited time in high-power mode while maintaining overall connection reliability through periodic reconnection.
Solution Approach 2:
The patent applies parameter changes by modifying the connection mode parameter based on time conditions. The system changes from first connection mode (one-to-one, higher reliability, higher power) to second connection mode (multiple-to-one, lower power) when time thresholds are met, dynamically adjusting operational parameters to balance reliability and power consumption.
3Use of energy by moving object
If low power nodes use multiple-to-one connection mode, then power consumption is reduced, but connection reliability decreases
Solution Approach 1:
The patent implements periodic action by switching between multiple-to-one connection mode (lower power consumption) and one-to-one connection mode (higher reliability). The friend node manages time-based switching, ensuring that nodes periodically reconnect using one-to-one mode to maintain reliability while spending most time in the more power-efficient multiple-to-one mode.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the connection mode parameter based on accumulated time. When nodes operate in second connection mode (multiple-to-one), the system monitors time and switches to first connection mode (one-to-one) when thresholds are reached, changing operational parameters to maintain reliability while optimizing power consumption.
4Device complexity
If no power management mechanism is implemented, then system complexity is reduced, but power dissipation becomes uneven and node lifespan is shortened
Solution Approach 1:
The patent introduces a friend node as an intermediary that manages power consumption without significantly increasing overall system complexity. The friend node tracks accumulated connection time for each low power node and manages mode switching, centralizing the power management function in a single node rather than requiring complex distributed power management across all nodes.
Solution Approach 2:
The patent implements feedback by having the friend node monitor accumulated connection time and provide switching commands to low power nodes. This feedback mechanism ensures that nodes switch modes based on time thresholds, automatically balancing power dissipation without requiring complex local decision-making at each node.
Data Source
AI summary
The present disclosure discloses a Bluetooth mesh network system having power management mechanism that includes low power nodes and a friend node. The friend node operates a part of the low power nodes under a first connection mode to establish a one-to-one connection with the friend node under a connection protocol. The friend node operates the other part of the low power nodes under a second connection mode to establish a many-to-one connection based on a broadcast protocol. The friend node sets a mode operation time threshold value and accumulates a mode connection time for each of the low power nodes. When the mode connection time of one of the low power nodes that operates under one of the first connection mode and the second connection mode reaches the corresponding mode operation time threshold value, the one of the low power nodes switches to operate under the other one of the first connection mode and the second connection mode.