M2M Service Layer Session Management Across Multiple Hops
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Solution Overview
Problem
Conventional M2M service layer architectures lack support for end-to-end sessions, leading to overhead and complexity in managing sessions, preventing network services from providing value-added functionalities such as data aggregation and analytics, and are unsuitable for unmanned devices.
Innovation Solution
Implement mechanisms to support end-to-end M2M service layer sessions that span multiple service layer hops, enabling the M2M service layer to participate in end-to-end security, quality of service, and negotiation of settings, with session management functions that encrypt and compress data, and provide data analytics and aggregation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional M2M service layer architectures are used, then application sessions can be established between applications, but extra overhead and complexity are added to applications
Solution Approach 1:
The patent introduces a service layer as an intermediary between applications and the underlying communication infrastructure. This service layer session manager handles session establishment, maintenance, and termination, freeing applications from direct session management complexity while maintaining session establishment capabilities.
Solution Approach 2:
The patent extracts session management functionality from applications and places it in the service layer. By taking out the session management burden from applications, the system reduces application complexity while preserving the ability to establish and manage sessions.
2Ease of operation
If application sessions are managed by applications themselves, then sessions can be established, but overhead and complexity increase
Solution Approach 1:
The service layer acts as a mediator that assumes the burden of session management from applications. This intermediary handles session state tracking, message routing, and session lifecycle management, making session management easier for applications while reducing their computational overhead.
Solution Approach 2:
The service layer provides self-service session management capabilities, automatically handling session establishment, maintenance, and termination without requiring application intervention. This reduces the operational burden on applications and decreases their energy consumption related to session management.
3Productivity
If conventional service layers are used, then basic communication is supported, but network services cannot provide value-added functionalities such as data aggregation and analytics
Solution Approach 1:
The patent merges session management with service layer functionality, creating an integrated architecture where the service layer simultaneously handles session control and provides value-added services such as data aggregation, analytics, and security. This combining approach enables productivity enhancement without proportionally increasing complexity.
Solution Approach 2:
The service layer is designed with multi-functionality, serving both as a session management infrastructure and as a platform for value-added services. This universal approach allows the same service layer to provide basic communication support while simultaneously enabling data aggregation, analytics, and other productivity-enhancing functionalities.
4Reliability
If end-to-end encryption is implemented at application level, then security is provided, but network services cannot process data securely
Solution Approach 1:
The service layer introduces an intermediary encryption approach where data is encrypted at the service layer rather than at the application level. This allows network services to access and process encrypted data securely for value-added functionalities like analytics and aggregation, while still maintaining security throughout the transmission and processing pipeline.
Solution Approach 2:
The patent applies different encryption strategies at different layers of the architecture. The service layer implements encryption that is tailored to its specific needs, allowing network services to process data with appropriate security measures in place, rather than applying uniform end-to-end encryption that would prevent intermediate processing.
Data Source
AI summary
Mechanisms support machine-to-machine service layer sessions that can span multiple service layer hops where a machine-to-machine service layer hop is a direct machine-to-machine service layer communication session between two machine-to-machine service layer instances or between a machine-to-machine service layer instance and a machine-to-machine application. Mechanisms are also disclosed that illustrate machine-to-machine session establishment procedures for oneM2M Session Management Service supporting multiple resources.