Wake-on-Radio Node Switching for Energy-Efficient Data Transmission
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Solution Overview
Problem
Existing methods for transmitting consumption data from decentralized data acquisition devices to a master network node are inefficient in terms of energy consumption and lack flexibility, particularly in battery-operated networks, due to high transmission volume and fixed time specifications.
Innovation Solution
The method employs a wake-on-radio concept where network nodes switch from a power-saving mode to a receiving mode at specific intervals to listen for consumption data, allowing bidirectional communication with frequency and data rate adjustments, enabling dynamic path adjustment and quasi-permanent readiness for data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If consumption data is transmitted using fixed time specifications and undirected addressing in an interstation network, then data redundancy and availability are improved, but energy consumption increases significantly
Solution Approach 1:
The patent implements periodic wake-up intervals where network nodes alternately sleep and wake to receive data, replacing continuous operation. Each node wakes up at predetermined intervals to check for data transmissions, then returns to sleep mode, significantly reducing energy consumption while maintaining data availability through periodic monitoring.
Solution Approach 2:
The master node transmits wake-up calls before actual data transmission to activate receiving nodes only when needed. This preliminary activation ensures nodes are ready to receive data when the master has information to send, avoiding continuous listening and reducing energy consumption while maintaining reliable data delivery.
2Ease of operation
If network nodes continuously monitor for data transmissions, then data transmission readiness is improved, but energy consumption increases
Solution Approach 1:
Network nodes switch between sleep mode and active receiving mode at predetermined intervals. During sleep mode, consumption is minimized; during active intervals, nodes monitor for wake-up calls and data transmissions. This periodic cycling maintains transmission readiness when needed while dramatically reducing average energy consumption compared to continuous monitoring.
Solution Approach 2:
Each network node autonomously manages its own sleep-wake cycles based on predetermined intervals and wake-up calls from the master node, without requiring continuous external control. This self-service approach enables nodes to independently balance readiness and energy consumption by activating only when wake-up signals are received.
3Adaptability or versatility
If bidirectional communication with frequency and data rate adjustments is implemented, then communication flexibility is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic frequency and data rate adjustments based on communication conditions. The master node and network nodes can switch between different frequency bands and modulation schemes adaptively, optimizing communication performance for varying channel conditions while maintaining manageable complexity through standardized protocols and pre-defined parameter sets.
Data Source
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AI summary
The method for transmitting consumption data of locally arranged data acquisition device to a master-node (12) by a network of nodes, involves switching a receiving unit of a node (10) at certain intervals by a power saving mode in a receive mode. The communication between the nodes is based partially or temporarily on a wake-on-radio concept during transmission of the consumption data. The receiving unit is carried out for a certain time on a certain radio channel in the receive mode. An independent claim is included for a device for transmitting consumption data of locally arranged data acquisition device to a master-node by a network of nodes.