Multi-TRP Timing Advance Adjustment for Low-Latency Synchronization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing timing advance adjustments for multiple transmission reception points (TRPs), which can lead to synchronization issues and reduced performance in multi-TRP scenarios.
Innovation Solution
Implementing autonomous timing advance adjustment procedures at user equipment (UE) and network nodes based on measurements from multiple TRPs, allowing for independent adjustment of timing advance parameters to enhance synchronization and communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional centralized timing advance adjustment is used in multi-TRP scenarios, then network control is maintained, but synchronization performance deteriorates due to increased latency and signaling overhead
Solution Approach 1:
The UE autonomously performs timing advance adjustment by measuring reference signals from multiple TRPs and independently determining timing corrections without network intervention. The UE calculates separate timing advance values for each TRP based on measured reference signal timings, enabling self-service timing synchronization that eliminates network signaling latency.
Solution Approach 2:
The timing advance adjustment is segmented into independent per-TRP adjustments rather than a unified network-controlled process. Each TRP's timing advance is adjusted independently based on its own reference signal measurements, allowing parallel processing and reducing overall synchronization latency.
2Reliability
If autonomous timing advance adjustment is implemented at UE, then timing synchronization is improved, but device complexity increases
Solution Approach 1:
The network provides preliminary configuration by transmitting reference signal configurations from multiple TRPs before the UE needs to perform timing adjustment. This preliminary provision of measurement targets simplifies the UE's task by pre-defining what to measure and how, reducing the complexity of autonomous timing adjustment.
3Productivity
If multiple timing advance parameters are adjusted autonomously, then communication efficiency is improved, but measurement and control difficulty increases
Solution Approach 1:
The UE uses feedback from measuring reference signals transmitted by multiple TRPs to autonomously determine and adjust timing advance parameters. The reference signals provide measurable feedback about transmission timing, enabling the UE to calculate appropriate timing corrections for each TRP based on actual received signal characteristics.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a first transmission reception point (TRP), a first reference signal. The UE may receive, from a second TRP, a second reference signal. The UE may perform an autonomous timing advance adjustment procedure by autonomously adjusting a first timing advance parameter associated with the first TRP based at least in part on a measurement associated with the first reference signal and autonomously adjusting a second timing advance parameter associated with the second TRP based at least in part on a measurement associated with the second reference signal. Numerous other aspects are described.