Extended DSME MAC Multi-Superframe Configuration
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Solution Overview
Problem
The IEEE802.15.4e Deterministic and Synchronous Multichannel Extension Media Access Control (DSME MAC) protocol faces limitations in supporting long data generation cycles and experiences redundant power consumption due to separate procedures for network association and time slot allocation, making it inefficient for applications with varying data generation cycles.
Innovation Solution
The proposed solution involves configuring a multi-superframe with adjusted parameters such as Superframe Order (SO), Beacon Order (BO), and Multi-superframe Order (MO), along with an Allocation Order (AO), to optimize time slot allocation and reduce power consumption by extending the time between allocations, thereby supporting longer data sampling cycles and minimizing unnecessary power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate procedures for network association and time slot allocation are used in DSME MAC, then network management is simplified, but power consumption increases due to redundant operations
Solution Approach 1:
The patent merges the network association procedure and time slot allocation procedure into a single integrated procedure. When a node joins the network, it simultaneously completes both association and time slot allocation in one process, eliminating redundant operations and reducing power consumption while maintaining ease of network management
2Reliability
If DSME MAC uses fixed time slot allocation, then reliability is improved, but adaptability to different data generation cycles deteriorates
Solution Approach 1:
The patent introduces dynamic time slot allocation where the time slot allocation cycle can be adjusted based on the data generation cycle of the application. The system can configure different allocation cycles (e.g., 16.8 minutes, 17.9 hours, or longer) to match different monitoring service requirements, maintaining reliability through deterministic allocation while adapting to varying data generation patterns
3Reliability
If time slot allocation frequency is increased, then data transmission reliability is improved, but power consumption increases due to frequent allocations
Solution Approach 1:
The patent changes the time slot allocation cycle parameter to match the data generation cycle of the application. By setting the allocation cycle to be equal to or longer than the data generation cycle (e.g., allocating time slots every 16.8 minutes or 17.9 hours for long-cycle applications), the system maintains necessary reliability while significantly reducing power consumption from frequent allocation operations
Data Source
AI summary
A method of configuring a multi-superframe is provided. The method includes setting at least one parameter for configuring the multi-superframe, and configuring the multi-superframe corresponding to the at least one parameter, wherein the at least one parameter includes a superframe order (SO), a beacon order (BO), and a multi-superframe order (MO), in a form of positive integers, and the setting includes setting the MO to have a value higher than the BO.