TSN Time Synchronization Updates for Lower 5G Signaling Load
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In mobile communication networks, the frequent updates required for time-sensitive communication assistance information (TSCAI) due to low latency in TSN traffic lead to increased signaling load, which is not efficiently managed by existing methods.
Innovation Solution
A method and device for controlling time synchronization in a mobile communication system that adjusts the time interval for updating TSCAI based on latency requirements and survival time, reducing the frequency of updates and thereby minimizing signaling load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If TSCAI is updated frequently to meet low latency requirements, then time synchronization precision is improved, but signaling load increases
Solution Approach 1:
The patent implements dynamic adjustment of the TSCAI update interval based on current network conditions and traffic characteristics. The SMF processor determines whether to update TSCAI by evaluating multiple parameters including latency requirements, survival time, and current update interval, rather than using a fixed update frequency. This dynamic approach allows the system to maintain time synchronization precision when needed while reducing signaling load during stable conditions.
Solution Approach 2:
The patent changes the parameter of update frequency from a fixed value to a variable determined by multiple factors including latency requirements, survival time, and current update interval. The SMF processor calculates whether to update TSCAI by comparing these parameters and adjusting the update behavior accordingly, thereby optimizing the balance between synchronization precision and signaling load.
2Quantity of substance
If update interval is extended to reduce signaling load, then signaling load decreases, but time synchronization precision deteriorates
Solution Approach 1:
The patent incorporates feedback mechanisms where the SMF processor continuously monitors network conditions, latency requirements, and survival time parameters. Based on this feedback, the system dynamically adjusts whether to update TSCAI, ensuring that time synchronization precision is maintained when network conditions or traffic characteristics change, while allowing extended intervals when conditions are stable.
Solution Approach 2:
The patent performs preliminary evaluation of update necessity before actually updating TSCAI. The SMF processor assesses latency requirements, survival time, and current update interval in advance to determine whether an update is needed, preventing unnecessary updates that would increase signaling load while ensuring updates occur when precision is required.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure relates to a 5G or pre-5G communication system to be provided for supporting a data transmission rate higher than that of a 4G communication system such as LTE. The method according to the present disclosure is a time synchronization method for transmitting time sensitive networking (TSN) data in a session management function (SMF) device of a mobile communication system, and may comprise a step of determining a time interval for updating time sensitive communications assistance information (TSCAI), and providing the determined time interval to respective nodes of the mobile communication system.