Network Centric Localization Node Manager Bandwidth Control
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Solution Overview
Problem
Network congestion occurs in indoor positioning systems when a large number of anchor nodes and mobile devices are used, leading to inefficient wireless channel bandwidth utilization and traffic congestion, especially in high-density applications like wireless lighting control networks.
Innovation Solution
Implementing a node manager that controls the submission of measurement reports from anchor nodes based on relevance, staggering report times and suppressing less relevant reports, with the node manager determining the most relevant nodes and their geographic groups, and delaying or suppressing reports from nodes outside these groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large number of anchor nodes and mobile devices are used to improve positioning coverage and accuracy, then positioning performance is improved, but network congestion and bandwidth utilization worsen
Solution Approach 1:
The patent applies local quality by making different anchor nodes have different reporting behaviors based on their local conditions. The node manager assigns different geographic groups to different anchor nodes and controls measurement report submission based on the specific needs of each node's location and the mobile device's position, rather than uniform reporting from all nodes.
Solution Approach 2:
The patent implements partial action by having only a subset of anchor nodes submit measurement reports at any given time. The node manager selectively controls which nodes report based on geographic group relevance, ensuring that not all nodes continuously report, thus reducing overall network traffic while maintaining positioning accuracy.
2Reliability
If all anchor nodes submit measurement reports continuously to improve location determination accuracy, then positioning reliability is improved, but network congestion increases
Solution Approach 1:
The patent implements periodic action by having anchor nodes submit measurement reports at controlled intervals rather than continuously. The node manager regulates the timing and frequency of report submissions from different geographic groups, ensuring periodic updates maintain positioning reliability while preventing network overload.
Solution Approach 2:
The patent applies segmentation by dividing anchor nodes into different geographic groups and managing their report submissions separately. This segmentation allows the system to control the flow of measurement reports from different regions independently, preventing any single group from overwhelming the network while ensuring comprehensive coverage.
3Measurement precision
If measurement reports from all reference nodes are transmitted to reduce positioning errors, then measurement precision is improved, but network traffic congestion worsens
Solution Approach 1:
The patent applies the taking out principle by extracting and transmitting only the most relevant measurement reports from anchor nodes. The node manager identifies which geographic groups are most relevant to the current mobile device position and extracts reports only from those nodes, eliminating unnecessary report transmissions from distant or irrelevant nodes.
Data Source
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AI summary
A system comprising location server, a localization module and a node manager. The location server comprises a network interface operable to receive measurement reports submitted from a plurality of reference nodes of a location network, each measurement report reporting a measurement of a signal received by a respective one of the reference nodes from a respective one of one or more mobile devices. The localization module is configured to determine a location of one or more of the mobile devices based on at least some of the plurality of measurement reports. The node manager is configured to control whether and/or when one or more of the plurality of measurement reports are submitted from one or more of the reference nodes, in dependence on a measure of relevance to the determination of the location of one or more of the mobile devices.