Mesh Network Node Alerting via Moving Direction Detection
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Solution Overview
Problem
Current light on demand applications in mesh networks of interconnected lighting devices are inefficient and unreliable due to unnecessary message relays, wasting transmission resources and causing interference, as they do not consider the object's movement direction when transmitting alerting messages.
Innovation Solution
A method where node devices receive an alerting message with a geographic location address of the originator node and the object's moving direction, determining if the object is approaching, and only transmitting the message if it is, thereby reducing unnecessary message relays and optimizing message transmission in the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If node devices transmit alerting messages to all neighboring nodes in a mesh network, then all nodes can potentially receive the message, but transmission resources are wasted and interference increases due to unnecessary relays to nodes not in the object's moving direction
Solution Approach 1:
The patent applies local quality by making each node device's message transmission behavior context-dependent on its location relative to the object's moving direction. Nodes determine whether to relay messages based on their geographic position and the object's trajectory, creating localized transmission zones rather than uniform network-wide broadcasting. This resolves the contradiction by ensuring reliable delivery to relevant nodes while preventing energy waste at irrelevant nodes.
Solution Approach 2:
The patent implements dynamics by making the message relay decision dynamic rather than static. Each node device dynamically evaluates its position relative to the object's moving direction and adjusts its transmission behavior accordingly. This dynamic approach ensures that transmission occurs only when necessary (when the node is in the moving direction), resolving the contradiction between reliable delivery and energy conservation.
2Ease of operation
If node devices relay alerting messages without considering object moving direction, then message propagation is simple, but network efficiency decreases and transmission resources are wasted
Solution Approach 1:
The patent applies preliminary action by having node devices pre-determine their role in message relay based on their geographic location and the object's moving direction before actually transmitting messages. Each node evaluates whether it should relay the message in advance, filtering out nodes that don't need to participate. This maintains operational simplicity while dramatically improving network efficiency by preventing unnecessary transmissions.
3Area of stationary object
If alerting messages are transmitted to all node devices, then comprehensive coverage is achieved, but communication costs and power consumption increase
Solution Approach 1:
The patent applies segmentation by dividing the network into relevant and irrelevant segments based on the object's moving direction. Instead of treating the entire network uniformly, the system segments message relay responsibilities so that only nodes within the moving direction segment actively participate in transmission. This achieves effective coverage of the relevant area while minimizing power consumption by excluding irrelevant nodes from the communication process.
Data Source
AI summary
A method (50) of, a node device (100) and a computer program product arranged for alerting node devices in a network of operatively interconnected node devices by transmitting an alerting message comprising a geographic location address of an originator node device (21) transmitting the alerting message and a moving direction (12) of an object (11) receiving service from the originator node device (21). When a receiving node device (24, 25) determines, based on its geographic location address, the geographic location address of the originator node device (21) and the moving direction (12), that the object (11) is approaching the receiving node device (24, 25), it transmits the alerting message comprising the geographic location address of the originator node device (21) and the moving direction (12).