M2M Resource Management via Announced Attributes
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Solution Overview
Problem
Current M2M communication systems lack efficient methods for resource management, particularly in scenarios where M2M devices are offline for extended periods, leading to challenges in updating and deleting attributes without consuming excessive battery power and bandwidth.
Innovation Solution
The proposed solution involves creating and managing 'announced attributes' using UPDATE and DELETE operations, allowing M2M devices to efficiently announce and de-announce resources, thereby reducing the need for frequent device wake-ups and minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If M2M devices wake up frequently to update and delete attributes, then resource management is maintained, but battery power is consumed excessively
Solution Approach 1:
The patent applies preliminary action by allowing M2M devices to announce their attributes and resources in advance while offline. The service capability layer stores these announcements, enabling other devices to retrieve attribute information without waking up the announcing device. This resolves the contradiction by maintaining resource management reliability through pre-announced attributes while eliminating the need for frequent wake-ups that would consume battery power.
2Productivity
If M2M devices maintain constant connectivity for attribute updates, then resource management is efficient, but bandwidth is consumed excessively
Solution Approach 1:
The patent extracts the attribute announcement and retrieval functions from the requirement for constant device connectivity. By allowing attributes to be announced and stored by the service capability layer while devices remain offline, the system separates resource management efficiency from continuous connectivity requirements. This resolves the contradiction by maintaining productivity through stored attribute announcements while eliminating excessive bandwidth consumption associated with constant connectivity.
3Use of energy by moving object
If M2M devices are offline for extended periods, then power consumption is reduced, but attribute updates and deletions become challenging
Solution Approach 1:
The patent introduces the service capability layer as an intermediary between offline M2M devices and other devices needing attribute information. The intermediary stores and manages attribute announcements, allowing devices to remain offline while their attributes remain accessible. This resolves the contradiction by enabling extended offline periods with low power consumption while maintaining ease of attribute management through the intermediary's storage and retrieval capabilities.
Data Source
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AI summary
In a machine to machine (M2M) system, resource management is performed by M2M devices by creating resources, announcing resources, retrieving information from an announced resource, deleting an announced resource, on behalf of the devices themselves, or on behalf of another device. In some embodiments, resource management protocols are further provided to include a child resource attribute that provides efficiency of protocol signaling by inheriting certain features if a parent resource from which the child resource attribute is derived.