MTC Group Triggering Update Validation in 3GPP Networks
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Solution Overview
Problem
There is no existing solution for updating triggering information of an MTC device group within the valid time in a 3GPP network, which is essential for maintaining accurate communication and resource utilization in MTC systems.
Innovation Solution
A method and system that allow the Broadcast Multicast Service Center (BM-SC) to determine if group triggering information has been sent to an MTC device group and if its valid time has been exceeded, enabling operations such as replacement or cancellation of the triggering information, with response messages sent to the Service Capability Server (SCS) indicating success or failure, and subsequent updating of the information within the valid time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the BM-SC sends group triggering information to the MTC device group, then the triggering information is delivered to the devices, but the triggering information may become invalid if sent too early or too late
Solution Approach 1:
The BM-SC performs preliminary validation checks before sending triggering information. It determines the valid time window in advance and checks whether updating conditions are met before actually sending the information, ensuring the information remains valid while preventing premature or delayed updates that would waste time
Solution Approach 2:
The system implements feedback mechanisms where the BM-SC receives response messages from the MTC devices confirming receipt of triggering information. Based on this feedback, the BM-SC can determine whether to send updated triggering information, ensuring updates only occur when necessary and within the valid time window
2Manufacturing precision
If the BM-SC checks whether triggering information has been sent before updating, then update accuracy is improved, but the signaling overhead and processing complexity increase
Solution Approach 1:
The BM-SC performs preliminary checks to determine whether MTC devices have successfully received triggering information before initiating an update. This preliminary assessment prevents unnecessary updates and reduces the complexity of update management by avoiding redundant operations
Solution Approach 2:
The MTC devices autonomously monitor their own receiving status and provide feedback to the BM-SC. This self-service mechanism allows devices to report whether they have successfully received triggering information, enabling the BM-SC to make accurate update decisions without complex centralized tracking
3Loss of information
If the BM-SC sends response messages to indicate update success or failure, then the SCS can accurately track update status, but the signaling overhead increases
Solution Approach 1:
The BM-SC sends response messages selectively based on update outcomes. It sends success indication messages when updates are successful and failure indication messages when updates fail, avoiding unnecessary signaling for routine operations while maintaining accurate tracking of update status
Solution Approach 2:
The system extracts and sends only the essential update status information in response messages. By focusing on conveying only the critical success/failure status rather than comprehensive update details, the signaling overhead is minimized while maintaining sufficient tracking accuracy for the SCS
Data Source
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AI summary
Provided are a method, device and system for updating triggering information of an MTC device group. The method includes: an SCS is connected with a BM-SC through a GCS AS, and sends a request message for updating triggering information of the MTC device group to the BM-SC; and the BM-SC performs a corresponding operation on group triggering information to be updated, and sends a response message of updating success to the SCS after completing the corresponding operation if the group triggering information to be updated has yet not been sent to an MTC device group and a valid time of the group triggering information to be updated has not been exceeded; and sends a response message of updating failure to the SCS if the valid time of the group triggering information to be updated has been exceeded or the group triggering information to be updated has been sent to the MTC device group. According to the embodiment of the present invention, a requirement of updating group triggering information in a 3GPP network can be realized.