Node Scheduling Method for Personal Area Network Resource Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current personal area networks (PANs) inefficiently utilize network resources as nodes with varying performance indicators, such as energy levels and data throughput, receive all beacon frames, leading to suboptimal data transmission and resource allocation.
Innovation Solution
A node scheduling method that configures a working period for each node based on its performance indicator, where the duration is an integer multiple of a superframe, and sends an updated beacon frame containing this information, allowing nodes to synchronize their activity periods with the network's beacon frames, optimizing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If all nodes receive all beacon frames and establish super frames, then nodes can participate in channel contention and data receiving and sending, but network resources cannot be properly utilized due to varying node performance indicators
Solution Approach 1:
The patent segments the uniform super frame structure into node-specific working periods. Each node is assigned a customized working period that is an integer multiple of the super frame duration, tailored to its performance indicators. This segmentation allows nodes with different energy levels and throughput requirements to operate in customized time windows, preventing high-performance nodes from being constrained by low-performance nodes and vice versa, thereby optimizing overall network resource utilization while reducing unnecessary energy consumption for nodes that don't need continuous activity.
Solution Approach 2:
The patent introduces dynamic working periods for nodes instead of fixed uniform super frames. The coordinator configures and updates working periods based on changing node performance indicators such as residual energy and throughput requirements. This dynamic adjustment allows the network to adapt to varying conditions over time, enabling nodes to optimize their energy consumption and data transmission based on their current state, thus resolving the contradiction between maintaining high productivity and reducing energy loss.
2Reliability
If nodes with low data throughput requirements enter active state frequently, then they can maintain network connectivity, but network resources are wasted
Solution Approach 1:
The patent applies local quality by assigning different working period characteristics to different nodes based on their specific performance indicators. Nodes with low data throughput requirements are assigned longer working periods with fewer super frame cycles, while nodes with high requirements get shorter, more frequent working periods. This localized customization ensures that each node maintains appropriate network connectivity for its needs without forcing all nodes into a uniform active state pattern, thereby improving overall network resource utilization while preserving necessary connectivity reliability.
3Productivity
If nodes with high energy reserves operate with longer super frames, then data transmission efficiency improves, but nodes with low energy cannot sustain operation
Solution Approach 1:
The patent changes the working period parameter for each node based on its energy characteristics and performance indicators. The working period duration is configured as an integer multiple of super frame duration, allowing flexible adjustment. Nodes with high energy reserves are assigned working periods that enable longer continuous operation and higher data transmission efficiency, while nodes with low energy are assigned shorter working periods that conserve battery life. This parameter customization resolves the contradiction by allowing each node to operate at optimal efficiency levels appropriate to its energy capacity.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
Embodiments of the present invention disclose a node scheduling method, where the method includes: configuring, for a node, a working period matched with a performance indicator of the node, where duration of the working period is an integer multiple of duration of a super frame, and the super frame is a super frame corresponding to a beacon frame in a network in which the node is located; and sending, to the node, an updated beacon frame that includes information about the working period, so that the node acquires the information about the working period from the updated beacon frame, receives a working beacon frame, establishes a super frame corresponding to the working beacon frame until the working period ends, and then repeats the receiving a working beacon frame and establishing a super frame corresponding to the working beacon frame until the updated beacon frame is received again, where the working beacon frame is a beacon frame broadcast in the network at a start moment of the working period. Accordingly, the embodiments of the present invention further provide a device and a system of a height node. The embodiments of the present invention can make a network resources in a personal area network be properly utilized.