M2M Platform Device Switching via Resource Tree Mapping
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Solution Overview
Problem
In the current M2M communication systems, network application servers face challenges in accurately accessing resources of re-registered devices due to changes in network topology, leading to disruptions in service continuity.
Innovation Solution
The method involves carrying the device's position in the resource tree of the network service capability layer (NSCL) before and after registration in the re-registration message, allowing the M2M platform to establish a mapping relationship and ensure the network application server can access resources seamlessly, even with changes in URI or IP addresses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the device performs re-registration due to attachment changes (switching between D/Ds devices or roaming between gateways), then the device can adapt to new network configurations and maintain communication capability, but the network topology structure changes causing the device position in the resource tree to change, making it impossible for the network application server to accurately access device resources
Solution Approach 1:
The patent applies preliminary action by including the device's position information in the resource tree both before and after re-registration in the re-registration message. This allows the network application server to proactively obtain the updated position information and maintain accurate resource access paths without experiencing service interruption or information loss.
Solution Approach 2:
The patent implements feedback by providing the device's position information in the resource tree after re-registration back to the network application server through the re-registration message. This feedback mechanism ensures the server always has current positioning information to accurately access device resources despite topology changes.
2Productivity
If the device switches attachment mode (between direct and gateway-based communication) or roams between gateways, then communication cost is reduced or signal quality is improved, but the URI or IP address of the device changes, disrupting service continuity
Solution Approach 1:
The patent uses feedback by continuously providing updated position information of the device in the resource tree to the network application server during re-registration. This ensures the server maintains accurate access information even when URI or IP address changes occur due to attachment mode switching or gateway roaming, thereby preserving service continuity.
Solution Approach 2:
The patent applies universality by using a unified re-registration message structure that carries position information applicable to all types of attachment changes (D to Ds device switching, gateway roaming, etc.). This single mechanism handles multiple scenarios, maintaining service continuity across diverse communication efficiency optimization cases.
3Measurement precision
If the network application server continuously tracks device position changes in the resource tree, then resource access accuracy is maintained, but system complexity increases
Solution Approach 1:
The patent applies self-service by having the device itself provide its position information in the resource tree during re-registration. The device autonomously tracks and reports its own position changes, eliminating the need for the network application server to implement complex tracking mechanisms, thus maintaining resource access accuracy while minimizing system complexity.
Solution Approach 2:
The patent uses feedback by having the device report its position information in the resource tree back to the network application server through the re-registration message. This simple feedback mechanism allows the server to maintain accurate resource access information without implementing complex tracking systems, balancing measurement precision with system complexity.
Data Source
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AI summary
Embodiments of the present invention disclose a method for switching of a device, an M2M platform and a network system. The method includes: a machine-to-machine M2M platform receives a re-registration message including a position of a device in a network service capability layer NSCL resource tree before registration and a position of the device in the resource tree of the NSCL after registration; the M2M platform generates mapping relationship between the position of the device in the resource tree of the NSCL before registration and the position of the device in the resource tree of the NSCL after registration. By way of the present invention, the problem in the prior art can be solved in a manner of re-registration.