LPWMN Routing Device Link Segmentation for Reliability
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Solution Overview
Problem
Conventional low power wireless communication technologies face challenges in providing high communication reliability and constant point-to-point transfer delay, particularly in industrial and medical equipment applications, where low power wireless networks are required.
Innovation Solution
A Low Power Wireless Mesh Network (LPWMN) routing device and method utilizing a channel hopping time multiplexing wireless link, with a control unit that sets up virtual, shared, or dedicated links, and a communication unit that forwards data frames based on these links, operating on a DSME MAC Link Control and Link Network sublayer, and a cluster unit that collects and sends link information for routing determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional low power wireless communication technology is used, then low cost and simple device connection are achieved, but communication reliability is insufficient
Solution Approach 1:
The patent segments the wireless link into multiple types (virtual link, shared link, dedicated link) with different quality grades. Each link type serves specific communication requirements, allowing the system to achieve high reliability for critical communications while maintaining simplicity for standard communications. The segmentation enables selective deployment of link types based on reliability requirements.
Solution Approach 2:
The patent changes the parameter of link quality by introducing virtual links with guaranteed transfer delay, shared links with prioritized access, and dedicated links with exclusive access. These parameter changes allow the system to provide different reliability levels without requiring complete system redesign, thus improving communication reliability while managing device complexity through configurable link parameters.
2Stability of the object's composition
If conventional low power wireless communication technology is used, then low power consumption is achieved, but constant point-to-point transfer delay cannot be guaranteed
Solution Approach 1:
The patent applies preliminary action by establishing virtual links with pre-configured guaranteed transfer delay parameters before data transmission begins. The system pre-establishes the temporal characteristics of communication paths, ensuring constant transfer delay for time-sensitive applications. This preliminary configuration allows the network to maintain stable transfer delay without requiring continuous high-power monitoring and adjustment during data transmission.
Solution Approach 2:
The patent ensures continuity of useful action by maintaining active virtual links with guaranteed transfer delay characteristics throughout the communication session. Once a virtual link is established, it maintains its temporal properties continuously, providing stable transfer delay without intermittent reconfiguration. This continuous maintenance of link characteristics improves transfer delay stability while avoiding the need for repeated link establishment and teardown operations that would consume additional energy.
3Reliability
If virtual link is set up for high reliability communication, then communication reliability is improved, but transmission time is increased
Solution Approach 1:
The patent applies partial action by providing different levels of service through link types. Virtual links provide guaranteed reliability and transfer delay for critical applications, while shared links provide standard reliability for less time-sensitive communications. This partial application of high-reliability mechanisms only where needed optimizes the trade-off between reliability improvement and transmission time, avoiding unnecessary time consumption for applications that do not require guaranteed performance.
Solution Approach 2:
The patent introduces dynamics by allowing the system to adaptively select between different link types based on real-time communication requirements. The routing device can dynamically establish virtual links when high reliability is needed and use shared or dedicated links when faster transmission is prioritized. This dynamic adaptation enables the system to optimize the reliability-time trade-off on a per-communication basis, reducing overall transmission time while maintaining reliability where required.
Data Source
AI summary
Disclosed herein are provided a routing device and method for configuring a Low Power Wireless Mesh Network (LPWMN) including a channel hopping time multiplexing wireless link. The routing device includes a control unit and a communication unit. The control unit sets up a virtual link, a shared link, or a dedicated link to an external device or router. The communication unit forwards a data frame to the device or router based on the set-up link.