5G Terminal Device Clock Source Information Forwarding
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Solution Overview
Problem
In the 5G system, there is no method for the Device-Side TSN Translator (DS-TT) to obtain clock source information, leading to discrepancies between the clock source information used by the DS-TT and the Network-Side TSN Translator (NW-TT), causing confusion among devices about the clock source.
Innovation Solution
A communication method where a terminal device receives and forwards clock source information from a user plane network element, ensuring that both the terminal device and the user plane network element obtain the same clock source information, thereby considering the 5G system as a unified clock source for external networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the DS-TT generates clock source information independently, then the DS-TT can provide clock synchronization to adjacent devices, but the clock source information will differ from that released by the NW-TT, causing confusion among devices about the clock source
Solution Approach 1:
The patent introduces the terminal device as an intermediary that receives clock source information from the NW-TT and forwards it to the DS-TT. This mediator ensures that the DS-TT obtains accurate clock source information from the 5G system without generating its own independent information, thereby maintaining consistency across all devices while enabling clock synchronization functionality.
2Reliability
If the user plane network element periodically sends clock source announcements and synchronization packets, then clock synchronization is maintained, but the load on the user plane network element increases
Solution Approach 1:
The terminal device performs self-service by autonomously receiving clock source information from the NW-TT, storing it locally, and forwarding it to the DS-TT when needed. This eliminates the need for the user plane network element to continuously generate and send clock source announcements and synchronization packets, significantly reducing its load while maintaining reliable clock synchronization through on-demand information sharing.
Data Source
AI summary
A communication method includes receiving, by a terminal device, first clock source information. The first clock source information corresponds to clock source information of a wireless communication system. The first clock source information indicates that a fifth generation (5G) system clock is useable as a clock source. The method further includes sending, by the terminal device, the first clock source information to an adjacent device.