Latency Compensation for 5G URLLC Time Synchronization
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Solution Overview
Problem
The existing 5G network solutions fail to meet the high time synchronization accuracy requirements for Ultra-reliable and Low Latency Communications (URLLC) services due to propagation latency between user equipment (UE) and base stations, leading to inaccuracies in time synchronization.
Innovation Solution
A latency compensation method is introduced where user equipment (UE) and base stations acquire and apply latency compensation parameters to reference time information, enhancing synchronization accuracy by compensating for propagation latency through adjustments to reference time, thereby improving time synchronization between UE and base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If timing advance is used to compensate for propagation latency, then uplink frame arrival time at base station is improved, but time synchronization accuracy for URLLC services deteriorates
Solution Approach 1:
The patent changes the parameter being compensated from uplink frame timing (timing advance) to reference time information itself. By applying latency compensation parameters directly to the reference time, the system achieves both timely frame arrival and high synchronization accuracy, resolving the contradiction between these two requirements.
2Object-affected harmful factors
If traditional timing advance compensation is applied, then propagation latency is offset, but time synchronization accuracy requirements for URLLC are not met
Solution Approach 1:
The patent applies preliminary compensation to the reference time information before it is used for synchronization. By pre-adjusting the reference time with latency compensation parameters, the system eliminates propagation latency effects in advance, ensuring both latency compensation and high synchronization accuracy for reliable URLLC service.
Data Source
AI summary
The present application provides a latency compensation method, a device, and a storage medium, comprising: a UE or a base station acquiring a latency compensation parameter, and performing latency compensation for reference time information according to the latency compensation parameter; and the UE performing time synchronization with the base station according to the reference time after compensation information. By performing latency compensation for the reference time information, an error of the reference time information caused by a propagation latency between the base station and the UE may be compensated, such that the reference time information is more accurate, and the time synchronization accuracy, which the UE subsequently performs time synchronization by using the reference time information after latency compensation to obtain, is improved.