Lighting Device Random Target Array for Network Discovery
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Solution Overview
Problem
As outdoor lighting systems grow in size and complexity, existing solutions face challenges in efficiently discovering and controlling new lighting device nodes, leading to network congestion and the hidden node problem.
Innovation Solution
A system manages response quantities by using a random target number array in lighting devices, where each device includes a linear array of fields with randomly selected integers, allowing devices to respond only if the specified integer value matches or falls within a tolerance range of the target integer, based on an estimated percentage of devices expected to respond, thereby reducing network congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all discoverable lighting devices respond to device discovery messages, then complete device discovery is achieved, but network congestion occurs
Solution Approach 1:
The patent implements partial action by having only a subset of devices respond to discovery messages. The control server selects a percentage of devices (e.g., 10-50%) to respond based on network conditions, rather than requiring all devices to respond. This reduces response traffic and prevents network congestion while still achieving sufficient device discovery for network management purposes.
2Object-generated harmful factors
If more fields are compared in the discovery message, then fewer devices respond reducing congestion, but discovery precision decreases
Solution Approach 1:
The patent applies dynamics by making the number of fields compared variable rather than fixed. The control server dynamically adjusts the number of fields to compare based on network conditions, device density, and discovery requirements. When network congestion is detected, more fields are compared to reduce responses; when discovery completeness is needed, fewer fields are compared to maintain precision.
Data Source
AI summary
A system manages the quantity of responses by discoverable lighting devices in a network, in responding to a device discovery request from a lighting control server. Each device includes a random target number accessible via the network, comprising a plurality of sequentially arranged fields, each field including a random target integer selected from a range of integers, based on a position of the field in the sequentially arranged fields of the random target number. The device discovery message includes a request to respond to the message if a specified value in the message compares with a target integer in a specified field of the random target number included in the receiving discoverable device, the specified value and specified field in the request based on an estimated percentage of the devices in the network expected to respond. Each device generates a response to the received request, if there is a successful comparison.