MTC-IWF Trigger Message Coordination to Reduce Signaling Overhead
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In Machine-to-Machine (M2M) communications, the MTC-IWF device and SMS-SC repeatedly send the same trigger message, leading to unnecessary signaling overhead and waste of network resources due to resending mechanisms when the initial message fails to be delivered.
Innovation Solution
The MTC-IWF device receives a delivery report from the SMS-SC indicating the failure cause of the trigger message, and based on this, it either waits for the SMS-SC to resend the message or resends it itself, avoiding duplicate transmissions by determining the cause of failure as either 'Absent Subscriber' or 'MS Busy' versus other causes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the MTC-IWF device and SMS-SC both resend the trigger message after initial delivery failure, then the message delivery reliability is improved, but the signaling overhead increases and network resources are wasted
Solution Approach 1:
The patent introduces an intermediary mechanism where the SMS-SC sends a delivery report to the MTC-IWF device to coordinate resending behavior. This intermediary communication prevents duplicate resending by allowing one entity (MTC-IWF) to take over the resending task after receiving failure notification, thereby maintaining reliability while reducing redundant signaling overhead.
2Productivity
If the MTC-IWF device chooses one sending manner but the SMS-SC resends after time interval, then the initial sending attempt is streamlined, but repeated trigger messages are sent causing signaling overhead
Solution Approach 1:
The patent implements a feedback mechanism where the SMS-SC sends a delivery report back to the MTC-IWF device after delivery failure. This feedback loop enables the MTC-IWF device to understand the delivery status and coordinate with SMS-SC to avoid duplicate resending, thus improving sending efficiency while preventing redundant message transmission.
3Loss of energy
If the MTC-IWF device waits for SMS-SC to resend the trigger message, then the signaling overhead is reduced, but the message delivery time may increase
Solution Approach 1:
The patent implements a dynamic resending strategy where the MTC-IWF device can adaptively choose between waiting for SMS-SC resending or actively resending itself based on the delivery failure cause. This dynamic approach allows the system to optimize between resource consumption and delivery time by selecting the most appropriate resending mode for each specific failure scenario.
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
The present invention discloses a trigger message sending method, device and system, which relate to the field of communications technologies and can resolve a problem that a Machine Type Communications-Inter Working Function MTC-IWF device and a short message service-service center SMS-SC repeatedly send a trigger Trigger message to a user equipment UE. The method includes: receiving, by the MTC-IWF device, a delivery report sent by the SMS-SC, where the delivery report is sent to the MTC-IWF device by the SMS-SC after the SMS-SC fails to send the trigger message to the UE; and waiting, by the MTC-IWF device according to the delivery report, for the SMS-SC to resend the trigger message, or resending, by the MTC-IWF device, the trigger message according to the delivery report. The present invention is mainly used in a process of sending a trigger message.