Timing Offset Updates Using Threshold-Based TA Variation Signaling
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Solution Overview
Problem
In non-terrestrial communication networks, the large round trip delay and mobility of network devices lead to high signaling overheads due to frequent updates of timing offset parameters based on timing advance adjustment amounts reported by terminal devices.
Innovation Solution
Terminal devices send first indication information to the network device when the timing advance adjustment variation exceeds a threshold, indicating the update regularity of the timing offset parameter, reducing the need for continuous reporting of timing advance adjustment amounts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the network device continuously updates the timing offset parameter based on the timing advance adjustment amount reported by the terminal device, then the timing offset parameter can be kept accurate, but the signaling overhead increases significantly
Solution Approach 1:
The patent extracts only the essential information needed for timing offset parameter updates by introducing indication information that triggers updates only when timing advance adjustment variations exceed a threshold. This selective extraction of necessary signaling content reduces overall signaling overhead while maintaining parameter accuracy when needed.
Solution Approach 2:
The patent implements periodic update mechanism where the timing offset parameter is updated based on threshold comparisons rather than continuously. The network device compares the timing advance adjustment variation against a threshold and only updates the parameter when the variation exceeds the threshold, creating a periodic rather than continuous update pattern that reduces signaling frequency.
2Speed
If the terminal device reports the timing advance adjustment amount continuously, then the network device can update the timing offset parameter in real-time, but the signaling frequency and overhead increase
Solution Approach 1:
The patent transforms continuous reporting into periodic reporting by introducing threshold-based triggering. The terminal device reports timing advance adjustment variations only when they exceed a predetermined threshold, converting the reporting mechanism from continuous to periodic events driven by significant changes in timing parameters.
Solution Approach 2:
The patent changes the reporting parameter from continuous timing advance adjustment amounts to discrete indication information based on threshold-exceeding variations. This parameter transformation reduces the frequency of signaling events while maintaining the ability to track significant timing changes.
Data Source
AI summary
Embodiments of this application relate to the field of communication technologies, and provide a timing offset parameter update method, a device, and a system, to help reduce signaling overheads when a terminal device updates a value of a timing offset parameter. The method includes: A terminal device obtains a timing advance adjustment variation corresponding to the terminal device, where the timing advance adjustment variation is a difference between a timing advance adjustment amount currently used by the terminal device and a timing advance adjustment amount used at a previous moment. The terminal device determines whether an absolute value of the timing advance adjustment variation is greater than or equal to a first threshold. If the absolute value is greater than or equal to the first threshold, the terminal device sends, to a network device, first indication information used to indicate an update regularity of a timing offset parameter.