Distributed Transmission Resource Management in TSCH Wireless Networks
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Solution Overview
Problem
The centralized allocation of timeslots in Time Slotted Channel Hopping (TSCH) protocols leads to high overhead and inefficiencies, particularly when combined with routing protocols like RPL, causing resource management conflicts and inefficiencies due to lack of active participation from child and remote nodes in resource allocation.
Innovation Solution
Implementing distributed resource management where child and remote nodes actively participate in the allocation and management of transmission resources by identifying and selecting suitable parent nodes, negotiating and allocating transmission resources independently, reducing reliance on central node control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If centralized timeslot allocation is used, then resource allocation is simple and less complex, but messaging overhead and energy consumption increase significantly
Solution Approach 1:
The patent divides the centralized resource allocation function into distributed segments where each node independently performs resource selection and allocation. Child nodes autonomously identify transmission resources and select parent nodes without requiring centralized coordination, thereby reducing messaging overhead and energy consumption while maintaining allocation effectiveness
Solution Approach 2:
The patent enables nodes to serve themselves in resource allocation by implementing autonomous resource identification and selection capabilities. Each node independently identifies suitable transmission resources and selects parent nodes based on local conditions, eliminating the need for continuous centralized control and reducing energy expenditure on control messaging
2Device complexity
If centralized timeslot allocation is used, then resource allocation process is simplified, but routing protocol efficiency deteriorates due to lack of node participation
Solution Approach 1:
The patent segments the resource allocation decision-making process from centralized control to distributed execution. Child nodes actively participate in resource identification and parent node selection, enabling routing protocols to function efficiently with full node participation while maintaining allocation simplicity through standardized autonomous procedures
Solution Approach 2:
The patent inverts the traditional centralized control model by allowing child nodes to actively select parent nodes and allocate resources autonomously. This inversion enables routing protocols to operate at full efficiency since nodes actively participate in resource management, while the allocation process remains simple through standardized selection criteria
3Ease of operation
If centralized resource allocation is implemented, then control and coordination is easier, but resource conflict probability increases
Solution Approach 1:
The patent enables each node to autonomously identify transmission resources and select parent nodes based on local network conditions. This self-service approach distributes the control burden while reducing resource conflicts through decentralized decision-making that adapts to local conditions, thereby improving reliability without sacrificing operational ease
Data Source
AI summary
In accordance with various embodiments, a system and method of distributed transmission resource management in a wireless network is disclosed. The transmission resource allocation is distributed throughout the network to all nodes. In distributed resource management, the resource allocation may be performed by child and/or remote nodes and child and/or remote nodes actively manage transmission resource allocation in the wireless network.