Low-power Wireless Network Using Wakeup Interval Routing
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Solution Overview
Problem
Low-power wireless networks face limitations in energy efficiency and route management due to limited resources and communication distance constraints, with existing methods like radio duty cycling and multi-hop routing experiencing power consumption issues and beacon collisions.
Innovation Solution
A low-power wireless network system with a manager node, nodes, and a sink node that uses a wakeup interval for communication, allowing the manager node to scan and set or unset routes for new nodes, enhancing energy efficiency and facilitating route management within a tag area network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nodes continuously transmit data packets to ensure delivery during wakeup intervals, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The system implements periodic transmission of data packets at predetermined wakeup intervals. Nodes transition between sleep and wakeup states periodically, transmitting data only during designated wakeup intervals rather than continuously. This periodic action ensures communication reliability is maintained through regular data delivery while significantly reducing power consumption by keeping nodes in low-power sleep states between transmissions.
2Device complexity
If asynchronous transmission is used to avoid time synchronization overhead, then device complexity is reduced, but data packet delivery reliability deteriorates
Solution Approach 1:
The system performs preliminary configuration of wakeup intervals and transmission schedules before actual data communication begins. Nodes are pre-configured with predetermined wakeup intervals that establish a implicit synchronization mechanism without requiring continuous time synchronization during operation. This preliminary action reduces device complexity by eliminating ongoing synchronization overhead while ensuring data packet delivery reliability through pre-established transmission timing.
3Length of moving object
If multi-hop routing is implemented to extend communication distance, then communication range is improved, but network complexity increases
Solution Approach 1:
The system segments the network into hierarchical levels with sink nodes at the core and regular nodes organized in wakeup intervals. Rather than implementing complex multi-hop routing protocols, the network is segmented into manageable units where each node communicates with its designated sink node during predetermined wakeup intervals. This segmentation extends communication distance through hierarchical organization while keeping network complexity manageable through structured, interval-based communication patterns.
4Speed
If nodes remain in wakeup state frequently to check for data packets, then communication responsiveness is improved, but power consumption increases
Solution Approach 1:
The system implements periodic wakeup intervals at predetermined time intervals rather than continuous or frequent wakeup states. Nodes transition to wakeup state only at these scheduled intervals to check for and transmit data packets, then return to sleep state. This periodic action maintains communication responsiveness by ensuring regular data delivery opportunities while minimizing power consumption by limiting wakeup frequency to essential intervals only.
Data Source
AI summary
The present disclosure provides a low-power wireless network system comprising: a manager node; nodes for transmitting data collected through a tag area network; and a sink node (base station) which is selected by a command of the manager node and transmits the data transmitted from the nodes to the manager node, wherein the sink node individually performs communication with the nodes and receives the data, on the basis of a wakeup interval configured for each of the nodes.